WO2016000626A1

WO2016000626A1 - Air purification apparatus and method

Info

Publication number: WO2016000626A1
Application number: PCT/CN2015/083121
Authority: WO
Inventors: 罗瑞真; 高耀森
Original assignee: 罗瑞真; 高耀森
Priority date: 2014-07-01
Filing date: 2015-07-01
Publication date: 2016-01-07
Also published as: CN106716023A; CN106716023B

Abstract

Disclosed are an air purification apparatus (100) and a method of using the apparatus for air purification. The air purification apparatus (100) has an air inlet (101) and an air outlet (102), and an airflow passage formed therebetween, comprising: a fan (300) comprising a fan air inlet (301) and a fan air outlet (302); an ion generator (200) comprising a circuit apparatus (201) and an ion release tip (202); a filter (500) comprising a filter mesh and a frame used for fixing the filter mesh; and an air mixing space (400), one air output end (402) thereof being in communication with the air outlet (102) via the filter (500), and one air input end (401) thereof being in communication with the air inlet (101) via the fan (300), the air mixing space (400) being a space of rapid flow or turbulent flow, and the air pressure in the air mixing space (400) being greater than the air pressure outside the air inlet (101) and the air outlet (102).

Description

Air purification device and method

[Technical Field]

The present invention relates to the field of environmental protection, and more particularly to an apparatus and method for effectively filtering and purifying air.

【Background technique】

There are two main types of pollutants in the air. One is a large-sized particle such as dust, bacteria, mold, etc. The molecular structure is complex and is composed of a plurality of different substances or components, about one micron to The size of the micron; the other is a chemical such as gas, odor, volatile organic chemicals, its chemical structure is simple, composed of several chemical elements, and very small, only the size of emimeter to nanometer.

Under normal circumstances, high-efficiency filters (High-Efficiency) are also used to remove fine respirable suspended particles, or tiny dust or particles. Particulate Air, HEPA). The filter material of the high-efficiency filter is usually made of randomly arranged chemical fibers (for example, polypropylene fiber, that is, polypropylene or polyester fiber, that is, polyester non-woven fabric) or glass fiber, and the diameter is about 0.5 to 2.0 μm. The floc or reticular structure is mainly used to intercept tiny dust or particles contained in the air passing through the filter. In general, HEPA with high filtration efficiency (intercepting efficiency) is about 99.99%-99.999% intercepting efficiency. HEPA's wind resistance is generally 200-400Pa, and the high efficiency of the intercepting efficiency is higher. If the filter has a finer floc or reticular structure, the chance of trapping or intercepting the tiny dust or particles contained in the air passing through the filter can also capture or intercept the relatively small volume of tiny dust. Or particles.

According to the US non-profit organization science and technology authority Institute of Environmental Sciences and Technology (IEST) establishes the standard IEST-RP-CC001.3 and MIL-STD-282 method 102.9.1, and the 0.3μm volume of dust with an intercept efficiency of at least 99.97% or more can be defined as a high efficiency filter. HEPA.

Although 99.99% and 99.999% of the high-efficiency filter screens seem to have similar interception efficiency, there are significant differences between the two in terms of filtering effect. The following examples illustrate:

Example one

For example, when comparing two high-efficiency filters: (i) high-efficiency filter with 99.99% interception efficiency, and (ii) high-efficiency filter with 99.999% intercept efficiency, (ii) high-efficiency filter effect is ( i) 10 times of the high-efficiency filter, that is, when the same wind speed is used to filter the tiny dust or particles, the air passing through the (i) high-efficiency filter has almost 10 passes to achieve the efficiency of 1 (ii). The filter effect of the filter; or (i) 10 times the filtration time (such as 50 minutes) to achieve (ii) the filtration effect in a short time (such as 5 minutes).

Example two

In the smoking room, the concentration of PM10 pollutants reaches 19000μg/m ³ , and the 99.99% high efficiency filter can reduce the pollutants from 19000μg/m ³ to 190μg/m ³ , and the 99.999% high efficiency filter can be used to remove pollutants. The reduction was from 19,000 μg/m ³ to 19 μg/m ³ . Among them, according to the Hong Kong indoor air quality index of 190μg/m ^{3 ,} it has exceeded the good level, but 19μg/m ³ is still in the excellent level. (Note: "Excellent" represents the best indoor air quality in a high-rise and comfortable building. "Good" represents the indoor air quality of the general public, including young children and the elderly.

Therefore, most air purification equipment manufacturers, for higher Clean Air Delivery Rate (CADR) values (Note: CADR is based on the Association of Home Appliance Manufacturers, American Home Appliance Manufacturers Association, AHAM, a recognized standard for the efficiency of air purification units, ie higher air purification, deliberately utilizes higher motor power fans to produce air purification units with high efficiency screening filters (HEPA). Although high-efficiency filter (HEPA) with high intercept efficiency can make the air purification device have excellent purification effect, it must be matched with a fan with higher motor power, which is often very power-consuming and causes noise problems.

[Summary of the Invention]

Based on this, it is necessary to provide an air purifying device and method that can improve air even in the case of the same fan motor power or without increasing the fan motor power even with a low windshield filter having a relatively low intercepting efficiency. Purify the performance of the device.

An air purifying device for purifying air containing dust particles, the air purifying device having an air inlet and an air outlet, and an air flow passage formed between the air inlet and the air outlet, comprising:

a hair dryer comprising a fan air inlet and a fan air outlet, wherein the air blower is used to blow air along an air flow passage from an air inlet of the air purification device to an air outlet of the air purification device;

An ionizer comprising a circuit arrangement and an ion release tip;

a filter comprising a screen and a frame for fixing the screen for capturing dust particles in the air;

An air mixing space, one end of the output air of the air mixing space is communicated with the air outlet of the air purifying device through a filter, and one end of the input air of the air mixing space is communicated with the air inlet of the air purifying device through the blower The air mixing space is a turbulent or turbulent space; the air pressure of the air mixing space is greater than the air pressure outside the air inlet and the air outlet.

In one of the embodiments, the ion release tip is disposed in the air mixing space.

In one embodiment, the blower is located at an upstream position of the air cleaning device, the filter is located at a most downstream position of the air cleaning device, and an ion release tip is disposed in the air mixing space.

In one embodiment, the blower is located at an upstream position of the air cleaning device, the filter is located at a most downstream position of the air cleaning device, and an ion releasing tip is disposed at the air mixing space and the hair dryer The position between the airflows is the boundary between laminar flow and turbulence or turbulence.

In one embodiment, the filter is a low wind resistance filter, the wind resistance value is such that the air purifying device blows out the airflow speed before and after the filter is placed After the filter is compared, no more than thirty percent difference.

In one embodiment, the filter is a low wind resistance filter, the wind resistance value is such that the air purifying device blows out the airflow speed before and after the filter is placed After the filter is compared, no more than twenty-five percent difference.

In one embodiment, the filter is a low wind resistance filter, the wind resistance value is such that the air purifying device blows out the airflow speed before and after the filter is placed After the filter is compared, no more than 20% difference.

In one embodiment, the filter is a low wind resistance filter, the wind resistance value is such that the air purifying device blows out the airflow speed before and after the filter is placed After the filter is compared, no more than 15% difference.

In one embodiment, the volume of the air mixing space is the cross-sectional area (A) through which the airflow can flow, multiplied by the length or distance (L) through which the airflow flows, wherein the air mixing space The volume is sufficient to allow the gas flow to be therein for not less than 0.01 seconds, so that the gas flow has enough time to stay in the air mixing space, causing the charged dust particles in the air to collide with each other and gather together to become bulky dust particles.

In one of the embodiments, the filter has a wind resistance value of 80 Pa or less at a face wind speed of 5.33 cm/sec.

In one of the embodiments, the filter has a wind resistance value of 50 Pa or less at a face wind speed of 5.33 cm/sec.

In one of the embodiments, the filter has a wind resistance value of 25 Pa or less at a face wind speed of 5.33 cm/sec.

In one of the embodiments, the filter has a wind resistance value of 17 Pa or less at a face wind speed of 5.33 cm/sec.

In one of the embodiments, the intercept efficiency of the filter is 99.97% or less for minute dust or particles of a size of 0.3 μm.

In one of the embodiments, the interception efficiency of the filter is 99.9% or less for minute dust or particles of a size of 0.3 μm.

In one of the embodiments, the filter has an interception efficiency of 99.5% or less for minute dust or particles of a size of 0.3 μm.

In one of the embodiments, the filter has an interception efficiency of 99% or less for minute dust or particles of a size of 0.3 μm.

In one embodiment, the blower is a centrifugal blower or a backward curved vane blower.

In one embodiment, the ion release tip is non-uniformly disposed on a cross section of the gas flow passage such that a portion of the dust particles in the air become charged dust particles.

In one embodiment, the blower is disposed at an upstream position of the ion release tip, the filter is disposed at a position downstream of the ion release tip, the air mixing space is located at the blower and the filter The location between.

In one of the embodiments, the ion release tip is located at the fan vent and adjacent one of the cross-sections of the fan vent.

In one embodiment, the fan air outlet has a cross section that is enlarged from small to large, and the ion release tip is disposed on a side of the fan air outlet near the high speed flow position of the air flow.

In one of the embodiments, the ion release tip is disposed at the air mixing space adjacent to the fan air outlet and adjacent to one side of the fan air outlet cross section.

In one embodiment, the ion release tip is disposed at an airflow junction location of the air mixing space at which the airflow changes from laminar to turbulent or turbulent.

In one embodiment, the upstream position of the frame of the filter is connected with at least one conductive mesh, and the conductive mesh is connected to the ground of the circuit device of the ion generator; or the frame of the filter is Conductive frame.

A method for purifying air by using an air purifying device, the air purifying device having an air inlet and an air outlet, and an air flow passage formed between the air inlet and the air outlet, the method comprising the following steps:

Using a hair dryer to blow air containing dust particles along the airflow channel from the air inlet of the air purification device to the air outlet of the air purification device;

The ion generator is used to release ions so that the dust particles in the air become charged dust particles;

In a turbulent or turbulent air mixing space, the charged dust particles in the air collide with each other and gather together to become larger dust particles;

A filter is used to capture the larger volume of dust particles that are gathered together in the air.

In one embodiment, the ion generator is used to release ions so that part of the dust particles in the air become charged dust particles, and in the turbulent or turbulent air mixing space, the charged dust in the air Particles and uncharged dust particles collide with each other and coalesce to form larger dust particles.

In one embodiment, the air purifying device comprises: at least one air inlet; at least one air outlet;

At least one blower; at least one filter for capturing dust particles in the air; at least one ion generator including a circuit device and an ion release tip; at least one air mixing space; the air mixing space being located in the blower And between the filters, the ion release tip of the ionizer is located in the air mixing space; part or all of the space of the air mixing space is a turbulent or turbulent space.

In one of the embodiments, the air pressure of the air mixing space has a higher air pressure than the air pressure outside the air inlet and the air outlet, or the air pressure around the outside of the air cleaning device.

In one embodiment, the filter faces one side of the air mixing space and has a relatively high air pressure with respect to one side of the filter facing the outside of the air cleaning device or the air outlet.

In one embodiment, the filter is a low wind resistance filter, the ionizer is turned on and off, cooperates with the filter application, and the filter is opened to the ionizer and In different cases of closure, there are different capture efficiencies for dust particles of different sizes.

In one embodiment, before the ion generator is energized, the filter captures a large volume of dust particles in the air and a small portion of dust particles, and most of the smaller dust particles. None of the filters are captured by the filter; after the ionizer is energized, the filter captures a relatively small portion of the dust in the air, in addition to capturing the larger volume of dust particles in the air. The particles; that is, the filter captures a large volume of dust particles in the air before the ion generator is energized, and the trapping efficiency is higher than that of the dust particles having a smaller volume; the ion generation occurs. After the device is energized, the filter captures smaller particles of dust in the air, and the capture efficiency is higher than that of the dust particles that are not captured when the ionizer is activated.

In one embodiment, the air purifying device determines and controls the energization switch operation of the ion generator according to the level of different volume of dust particles in the surrounding environment, and specifically controls capturing different volumes of dust particles in the air. Effective use of low-resistance filters allows flexible filters with low wind resistance to be used flexibly to remove different volumes of dust particles.

In one embodiment, the air purifying device is provided with two or more modes of operation, including filtering the dust particles with smaller volume and filtering the dust particles with larger volume, and performing dust filtering on the smaller volume. In the case of particles, the ion generator is energized, and when the dust particles having a large volume are filtered, the ion generator is powered off and does not operate.

In one embodiment, the air purification device includes at least one sensor for measuring temperature, humidity, volatile organic compounds, and smaller dust particles. (PM2.5), large dust particles (PM10), formaldehyde, carbon dioxide, carbon monoxide, dust, ozone, nitrogen oxides, bacteria, helium, wind speed, wind, air pressure, ambient light, sound, air At least one of the radiation levels.

In one embodiment, the sensor measures the ambient, or enters the air purification device (ie, the air upstream of the air purification device), or is blown from the air purification device (ie, the air downstream of the air purification device) At least one of the data in the air; then based on data of the sensor metrics, and/or based on ambient environmental data coupled to the air purifying device and input, and/or in accordance with the air purifying device The user's personal data, assess the measured data, prioritize the health effects of the user, and then determine and control the ionizer's power-on switch operation.

In one embodiment, the operation mode of the air purifying device is such that the level of the dust particles before the air purifying device is measured by the sensor and the level of the dust particles blown from the air purifying device are compared, and then compared The above two are judged and controlled. For example, if the level of the smaller volume of dust particles before entering the air purifying device is larger, the energizing switch of the ion generator is controlled to operate; if the volume of the dust particles smaller before entering the air purifying device is higher Small, the power switch that controls the ionizer does not work.

Compared with the air purifying device and method in the prior art, the present invention uses a hair dryer to be disposed at an upstream position of the air purifying device, thereby causing a space between the air outlet of the blower and the filter, that is, the air mixing space, to become a turbulent or turbulent flow. Space, and the charged dust in the turbulent or turbulent air mixing space collides and aggregates to form larger-sized dust particles, thereby increasing the chance of being captured by the filter. In addition, the blower located upstream of the air purifying device cooperates with the use. The lower wind resistance filter does not need to increase the power of the fan motor, but also increases the wind speed of the blower machine, so that more air is sent to the air purifying device for a limited time, thereby being purified.

The air purifying device is matched with the "lower intercepting efficiency and relatively low wind resistance filter", and the "higher intercepting efficiency and relatively high wind resistance filter" is matched, and the purifying efficiency of removing fine dust or particles is better.

Due to the wind speed of the blower, it is improved by the filter using the lower wind resistance. The invention shows that the filter with low wind resistance and low filtration efficiency is applied, but the purification and filtration effect of the air purification device can be greatly improved.

[Description of the Drawings]

Fig. 1 is a structural view generally showing an air purifying apparatus which is provided with an ion generator and a filter and an exhaust fan.

2 is a structural view of an air cleaning device according to Embodiment 1 of the present invention;

Figure 3 is a schematic view showing the process of purifying air by using the air purifying device of the present invention;

4 and 5 are graphs showing the relationship between the amount of air sent by the different air blowers to the air purifying device and the air pressure of the air purifying device.

Figure 6 is a structural view showing an air purifying device according to Embodiment 2 of the present invention;

Figure 7 is a structural view showing an air purifying device according to Embodiment 3 of the present invention;

8 is a comparison of the dust removal efficiency of the air purifying apparatus of Comparative Example 1 and Embodiment 2 in which: (1) the ion generator is activated; and (2) the ion generator is not activated;

Figure 9 is a comparison of dust removal efficiencies compared to placing ion release tips at different locations in an air purification device.

【detailed description】

The above described objects, features and advantages of the present invention will become more apparent from the aspects of the appended claims. Numerous specific details are set forth in the description below in order to provide a thorough understanding of the invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention, and thus the invention is not limited by the specific embodiments disclosed below.

It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or the element can be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items.

As shown in Embodiment 1 of FIG. 2, the air cleaning apparatus 100 of the present invention includes a blower 300, an ionizer 200, an air mixing space 400, and a filter 500.

The air purifying device 100 has an air inlet 101 and an air outlet 102, and an air flow passage is formed between the air inlet 101 and the air outlet 102.

The blower 300 includes a fan air inlet 301 and a fan air outlet 302. The fan air inlet 301 draws in air 801 containing dust particles and being cleaned by the filter 500; the fan air outlet 302 blows air 802 containing dust particles and being cleaned by the filter 500; the hair dryer 300 air is blown downstream from the upstream along the air flow passage in the air cleaning device 100, that is, the direction from the air inlet 101 to the air outlet 102 of the air cleaning device 100.

The ionizer 200 includes a circuit arrangement 201 and an ion release tip 202.

In a specific embodiment, the ions released by the ion release tip 202 are negative ions.

One end 402 of the output air of the air mixing space 400 communicates with the air outlet 102 of the air cleaning device 100 through the filter 500; one end 401 of the input air of the air mixing space 400 passes through the blower 300 and the air The air inlet 101 of the purification device 100 communicates. The air mixing space 400 is a turbulent or turbulent space. Further, the air mixing space 400 is a positive pressure space.

The filter 500 includes a screen and a frame for fixing the screen. When the filter 500 purifies air, the filter screen is used to capture fine dust particles in the air. In a specific embodiment, the filter 500 is a accordion-shaped filter; the filter material of the filter 500 is made of a composite filter paper or a glass fiber filter. Further, the filter 500 is a low-resistance filter; in one embodiment, the filter 500 has a wind resistance value of only 80 Pa or less at a face wind speed of 5.33 cm/sec. The surface wind speed of the filter 500 refers to the wind speed of the inlet or outlet surface of the filter.

In one of the embodiments, the filter 500 has a wind resistance value of only 50 Pa or less at a face wind speed of 5.33 cm/sec.

In one of the embodiments, the filter 500 has a wind resistance value of only 25 Pa or less at a face wind speed of 5.33 cm/sec.

In one of the embodiments, the filter 500 has a wind resistance value of only 17 Pa or less at a face wind speed of 5.33 cm/sec.

In one embodiment, the low wind resistance filter 500 causes the air purifying device 100 to blow out the velocity of the airflow, which is not high before the filter 500 is placed and after the filter 500 is placed. a difference of thirty percent; further, the low wind resistance filter 500 causes the air cleaning device 100 to blow out the velocity of the airflow before the filter 500 is placed and the filter 500 is placed thereon After comparison, the difference is not higher than 25 percent; further, the low wind resistance filter 500 causes the air purifying device 100 to blow out the velocity of the airflow before and after the filter 500 is not placed Comparing, after placing the filter 500, no more than 20% difference; further, the low wind resistance filter 500 causes the air purifying device 100 to blow out the velocity of the airflow, and the filter is not placed Before 500, and after placing the filter 500, it is no more than 15% difference.

In the present invention, the ion release tip 202 is disposed on a cross section of the air flow passage of the air cleaning device such that all air 802 that contains dust particles and is to be cleaned by the filter 500 flows through the air flow passage. The dust particles flow through the ion release tip 202 to become charged dust particles 803 & 804.

The blower 300 is disposed upstream of the ion release tip 202; the filter 500 is placed downstream of the ion release tip 202. The air mixing space 400 is located between the blower 300 and the filter 500. In an embodiment, the blower 300 is located at the most upstream position of the air cleaning device 100, and the filter 500 is located at the most downstream position of the air cleaning device 100.

The air blown by the fan outlet 302 will create turbulence or turbulence 805 in the air mixing space 400. Thereby, the original traveling route of the charged dust particles 803 & 804 can be disturbed, and can collide with each other to adsorb each other, and integrate a large volume of dust particles 806, and can be captured by the low wind resistance filter 500. 400, a volume of dust particles 806 that have become larger in the air mixing space.

The volume of the air mixing space 400 is the cross-sectional area (A) through which the airflow can flow, multiplied by the length or distance (L) through which the airflow flows, wherein the volume of the air mixing space 400 is sufficient for the airflow to Not less than 0.01 seconds, the airflow has sufficient time to stay in the air mixing space 400, causing the charged dust particles 803 & 804 in the air to collide with each other and gather together to become a larger dust particle 806.

Calculating the residence time of the volume of the gas stream in the air mixing space 400, one of which is:

Length or distance through which the airflow flows (L) / surface wind speed of the air outlet surface of the filter = airflow time in the air mixing space

In a specific embodiment, the ion release tip 202 can also be non-uniformly disposed on the cross section of the airflow passage of the air cleaning device so that all the dust particles flowing through the airflow passage are treated. The air 802 purified by the filter 500 has only a part of the dust particles flowing through the ion release tip 202, becoming charged dust particles 803, charged dust particles 803 and uncharged dust particles 804. Some of the traveling routes are disturbed in the air mixing space 400, and can collide with each other to adsorb each other, and integrate the bulky dust particles 806. With the low-resistance filter 500, the dust particles 806 having a volume of 400 in the air mixing space are captured.

When air enters the air mixing space 400, a turbulent flow or a turbulent flow 805 is formed in the air mixing space 400, and the airflow forms a turbulent flow or a turbulent flow, thereby enhancing the effect of "colliding with each other and adsorbing each other". The junction integrates a larger volume of dust particles 806, or an integrated volume of large dust particle clusters 806, the larger volume of dust particles 806, or a cluster of dust particles 806, as the wind flows through the filter 500, even if The filter has a low intercepting efficiency for tiny dust or particles of a size of 0.3 μm, and is easily and efficiently captured by the filter 500 for the dust particles having a large volume, and the air purifying device 100 outputs the purified Air 807.

In contrast, FIG. 1 shows an air purifying device 10 generally provided with an ionizing device and a filter. Generally, the ion releasing tip 20 of the ion generator is used in cooperation with the filter 50 and the exhaust fan 30, and the ion generator 20 first makes the air. The dust in the 80 is electrostatically charged or charged, and the air 80 containing dust and static electricity is drawn into the filter 50 by the exhaust fan 50, and the electrostatically charged dust is collected on the dust collecting device or the screen 50. In the exhaust mode of the exhaust fan 30, when the dust in the air passes through the ionization device, it is charged with static electricity or electric charge, and is located under the laminar air flow driven by the downstream exhaust fan 30 of the air purifying device 10, and is electrostatically charged or charged with dust. Will be mutually exclusive, when being pumped into the dust collecting device such as the filter 50, only the volume of dust or dust is close to the gap of the filter screen, and it is easy to be captured by the filter net, with static electricity and small volume. The dust, or the dust whose volume is smaller than the gap of the filter 50, is not effectively attracted by the laminar flow, and when it is mutually repelled with other electrostatically charged dust. Or being deflected from the direction of its original wind speed to move forward, and adsorbed on the floc or mesh structure of the filter, which is smaller than the gap of the filter, even if it is attached to the filter The gap escapes, so the smaller volume of dust cannot be effectively intercepted by the less efficient filter 50.

That is to say, the charged dust particles 803 & 804 of the air purifying apparatus of the present invention (or the dust particles 806 having a large volume of integrated air) enter the filter 500 in a disordered turbulent flow or turbulent flow. In contrast, conventional air purification devices (shown in Figure 1), which carry electrostatic or charged dust, are in a streamlined laminar flow before entering the filter 50. The air purifying device of the present invention causes charged dust to collide and aggregate in a turbulent or turbulent air mixing space to form larger-sized dust particles, and even if used in a filter with low wind resistance and low intercepting efficiency, it is effective to remove minute dust in the air or particle. On the contrary, the conventional air purifying device causes the electrostatically charged or charged dust to flow forward in the laminar airflow, and is mutually exclusive with other electrostatically charged dust, and does not aggregate to form larger-sized dust particles, and the airflow is still in the airflow. Filled with static electricity or tiny particles of dust or particles, it is necessary to match the filter with high interception efficiency to achieve acceptable filtration. Since the windshield of the filter with high interception efficiency is very high, that is, the conventional air purifying device must also cooperate with the high-power fan.

Table 1 below shows the comparison of the dust removal efficiency of the different air purifying devices: (1) the air purifying device of Fig. 1; and (2) the dust removing efficiency of the air purifying device of the first embodiment of the present invention.

Both air purification units use fans of the same power, the same ion generator 200, and filters of the same wind resistance and filtration efficiency. Among them, the air purification device (2) has obvious dust removal efficiency than (1). It can be seen that under the same components, the position of the different components has a significant influence on the dust removal efficiency of the air purification device. The invention utilizes a hair dryer to be disposed at an upstream position of the air purifying device, so that the space between the air outlet of the blower and the filter, that is, the air mixing space, becomes a turbulent or turbulent space, and the charged dust is turbulent or turbulent air. The mixed space collision builds up to form larger sized dust particles, thereby increasing the chance of being captured by the filter.

Table 1

空气净化装置 Air purification device	（ 1 ） ( 1 )	（ 2 ） ( 2 )
除尘效率 Dust removal efficiency	72% 72%	98.2% 98.2%

The two air purifying devices are further compared: (1) the air purifying device of Fig. 1; (2) Fig. 2 is a comparison of the dust removing efficiency of the air purifying device of the first embodiment of the present invention.

In order to achieve the same air purification efficiency of the two air purifying devices, (1) using a filter with an interception efficiency of 99.99%, (2) using a filter with an interception efficiency of 99.9%; that is, at the same wind speed, (1) filtering The filter has a 10x effect than the (2) filter. The test results show that when the same air purification performance is achieved, (1) it needs to cooperate with a fan that consumes about 580Watt, and (2) only needs to cooperate with a fan that consumes about 120Watt.

Table 2 below compares the dust removal efficiency of different air purification devices: (1) Figure 2 is an air purification device according to Embodiment 1 of the present invention; and (2) Comparison of dust removal efficiency of the ion generator of the air purification device of Embodiment 1 is turned off. .

The air purification device (1) has a significant dust removal efficiency than (2). It can be seen that the charged dust particles have a greater chance of being captured by the filter due to the formation of larger-sized dust particles.

Table 2

空气净化装置 Air purification device	（ 1 ） ( 1 )	（ 2 ） ( 2 )
除尘效率 Dust removal efficiency	98.2% 98.2%	80% 80%

Table 3 below compares the dust removal efficiency of different air purification devices: (1) Figure 2 is an air purification device according to Embodiment 1 of the present invention; and (2) replacing the air purification device of Embodiment 1 with high air resistance and high filtration efficiency. The dust removal efficiency of the device is compared. The air purification device (1) has a significant dust removal efficiency than (2). It can be seen that the blower located upstream of the air purifying device, due to the use of the filter having a lower wind resistance, can increase the wind speed of the blower without increasing the power of the fan motor. The operation of higher wind speeds is combined with the original low wind resistance and low filtration efficiency filter to greatly improve the purification and filtration effect of the air purification device.

table 3

空气净化装置 Air purification device	（ 1 ） ( 1 )	（ 2 ） ( 2 )
除尘效率 Dust removal efficiency	98.2% 98.2%	74% 74%

Fig. 3 shows a process of performing air purification as shown in Example 1 by the air purifying apparatus of the present invention. First, the air purifying device draws in from the fan air inlet 301 by the blower 300, and then sends out the air 801 containing the dust particles and being cleaned by the filter 500 through the fan air outlet 302, and at the same time, the air or air flow is also taken from the upstream. Flow downstream.

The ion release tip 202 disposed at one end of the fan air outlet 302 and the ion release tip 202 disposed in the air mixing space 400 cause all the dust particles to be blown from the fan air outlet 302 to be subjected to the filter 500. Purified air 802, or partially blown air 802 containing dust particles and being cleaned by the filter 500 from the fan air outlet 302, the dust particles 8003 flowing through the ion release tip 202 to become charged The dust particles 803 & 804 (or partially blowing the dust granules containing the dust particles and being cleaned by the filter 500 through the fan air outlet 302 through the ion release tip 202 are only partially charged dust particles 803, The other portion is an uncharged dust particle 804), and the charged dust particles 803 and 804 collide with each other in the air mixing space 400 to form a bulky dust particle 806 or an integrated dust particle cluster 806. The bulky dust particles or clusters of dust particles 806 are captured by the filter 500 as the gas stream 805 passes through the lower windscreen filter 500.

Further, in the process of flowing through the air mixing space 400, the turbulent flow or the turbulent flow 805 is generated, so that the chances of changing the original route direction by the smaller dust particles 803, 804 become larger, thereby enhancing mutual collision and mutual collision. The effect of adsorption together makes it easier for the smaller volume of dust particles 803, 804 to be integrated into a larger volume of dust particles or clusters of dust particles 806.

Since the filter 500 captures the densely formed dust particles 806, the chance of capturing the dust particles 803, 804 which are not formed into smaller volumes is greatly enhanced, thereby significantly increasing the air purification effect.

The wind resistance of the filter 500 changes with the dust particles that have been adsorbed or stored. The main reason is that when the adsorbed dust particles are attached to the surface of the filter 500, they also become a part of the filter 500. The adsorbed dust will also help to reinforce the function of the original filter 500, in particular to assist the filter 500 in capturing larger volumes of dust particles, while at the same time, the wind resistance caused by the entire air purifying device, or the air generated by the blower. Pressure, wind pressure, etc. will increase accordingly. Therefore, in order to cope with long-term use, the hair dryer must have a specific blowing feature to match the filter wind resistance that changes with time of use.

There is a type of hair dryer in which the amount of air sent by the air purifying device is almost in inverse proportion to the wind pressure of the air purifying device. Fig. 4 is a graph showing the relationship between the amount of air sent by the blower in the air purifying device and the wind pressure of the air purifying device. The horizontal axis represents the air volume V sent by the air purifying device, and the unit is m ³ /hr; the vertical axis represents the change Δp of the air pressure of the air purifying device, and the unit is pa. A ducted fan is one of the types of blowers of this type. The greater the wind resistance of the air purifying device, the smaller the amount of air sent by the ducted blower to the air purifying device, and the blower is not recommended for the air purifying device. Effective long-term use, because when the filter adsorbs a certain amount of dust particles, the wind resistance of the filter increases, when the blower operates, facing the increased wind resistance, or wind pressure, according to the characteristics of the hair dryer, the air volume sent out It is reduced, so that it is no longer possible to treat high concentration or large space contaminants.

In addition, there is a type of hair dryer, wherein the air volume sent by the air purifying device is inversely proportional to the straight line of the air pressure of the air purifying device, and is limited to the output air volume being greater than a certain level. When the air volume is below a certain level, the hair dryer may be The wind pressure that is coped with is stable or basically stable. This type of fan is a variable flow constant pressure device. This type of hair dryer can output large air volume and high pressure. FIG. 5 is a diagram showing the relationship between the air volume sent by the air purifying device and the air pressure of the air purifying device, wherein the horizontal axis represents the air volume V sent by the air purifying device, and the unit is m ³ /hr; The axis represents the change Δp in the air pressure of the air purifier, in units of pa. Centrifugal fans, rear-tilt fans (rear vane-type fans), are fans of this type.

Therefore, further, the air purifying device of the present invention preferably cooperates with the fan which can output a large amount of air and has a large pressure. When the wind pressure or the air purifying device increases the wind resistance, it is still below a certain level, and the fan is The air volume sent by the air purifying device is stable. When the filter adsorbs a certain amount of dust particles, the wind resistance of the filter increases, and according to the characteristics of the hair dryer, a large amount of wind and a large pressure of wind are still sent, so that the filter can be effectively treated by increasing the wind resistance filter. High concentration or large space contaminants.

As shown in FIG. 6, the air purifying apparatus provided in Embodiment 2 of the present invention is basically the same as that shown in Embodiment 1, except that the frame of the filter is a metal frame 501.

As shown in FIG. 7 , the air purifying apparatus provided in Embodiment 3 of the present invention is substantially the same as that shown in Embodiment 1, except that the filter is located at a position slightly ahead of the filter, and at least one ventilation metal or conductive mesh 600 is provided. A venting metal or conductive mesh 600 is coupled to the ground of the circuit arrangement 201 of the ionizer 200.

Wherein, more preferably, the position of the ion releasing tip 202 in the embodiment 1-3 is at a position of one end of the fan air outlet 302, which is a side close to the cross section of the fan air outlet 302. All of the air 802 that contains dust particles from the fan outlet 302 and is to be cleaned by the filter has only a portion of the dust particles flowing through the ion release tip 202.

Wherein, if the ion release tip 202 is disposed at a position of one end of the fan air outlet 302, the cross-sectional area of the wind flow at the position is a gradually enlarged cross-sectional area, and more precisely, the ion release tip 202 is disposed at On the side near the high velocity flow position of the gas stream, after passing through the ion release tip 202, the gas flow velocity is slowed down so that a portion of the dust particles 804 that do not flow through the ion release tip 202 are followed by Part of the charged dust particles 804 flowing through the ion releasing tip 202, in the air mixing space 400, collide with each other and absorb each other when the airflow speed is slowed down, and the volume is integrated with each other. Large dust particles 806.

Wherein, if the ion release tip 202 is disposed at the position of the air mixing space 400, the position is close to the fan air outlet 302 and close to one side of the cross section of the fan air outlet 302.

Wherein, if the ion release tip 202 is disposed at the position of the air mixing space 400, the ion release tip 202 is also at an airflow junction position, the airflow junction position, the airflow is changed from laminar flow to turbulent or turbulent flow 805; Of the laminar airflow blown from the fan outlet 302, only a portion of the laminar airflow flows through the ion release tip 202, and the dust particles in the laminar airflow become charged dust particles 803, and the other portion does not have The dust particles 804 flowing through the laminar airflow of the ion releasing tip 202 still maintain a neutral charge, and the charged dust particles 803 and the neutrally charged dust particles 804 are in the air mixing space. 400, because the airflow forms a turbulent flow or a turbulent flow 805, collides with each other and sucks together, and integrates a larger volume of dust particles 806, or an integrated dust particle cluster 806, the larger dust particles 806, Or clusters of dust particles 806 are captured by the filter 500 as the wind passes through the filter 500.

Fig. 8 shows an experiment in which the air purifying apparatus of the first embodiment and the second embodiment was compared with the dust removing efficiency of the ion generator and the unactivated ion generator. This experiment applied the following air purifying device for comparison: (1) Example 2 in which the ion generator was activated; (2) Example 1 in which the ion generator was activated; (3) Implementation of the ion generator not activated Example 2; (4) Example 1 in which the ionizer was not activated. The order of dust removal efficiency from high to low is: (1)>(2)>(3), (4). Among them, (1) has a clear dust removal efficiency than (2), and the dust removal efficiency of (3) and (4) is low, and the effect is similar. It can be seen that the ion generator is activated and the filter material is kept neutral (to prevent the filter from becoming a charged filter), which effectively increases the dust removal efficiency.

Figure 9 shows the experiment of placing the ion release tip at different positions, and the air purification device has different dust removal efficiency. The following air purification device is used for comparison: (1) the air purification device of the embodiment 2; (2) modification The air purifying device of Embodiment 2, wherein the ion releasing tip is placed at a position where the fan outlet is centered; (3) modifying the air purifying device of Embodiment 2, so that the ion releasing tip is placed at a position where the fan inlet is centered; (4) In the air purifying apparatus of Embodiment 2, the ion releasing tip is placed at the outlet surface of the filter. The order of dust removal efficiency from high to low is: (1)>(2), (3)>(4).

Among them, (1) has obvious dust removal efficiency than (2) and (3), (2) and (3) have obvious dust removal efficiency, and (2) have the same dust removal efficiency and effect as (3). It can be seen that the placement position of the ion release tip has an important purifying effect on the present invention, mainly because all the air containing the dust particles and being cleaned by the filter from the air outlet of the fan is placed by the ion release tip. The relationship, only a part of the dust particles flow through the ion release tip, so that only a part of the dust particles from the air outlet blown out of the fan become charged dust particles, and the other part has no flow. The dust particles of the tip release tip maintain a neutral charge, and the charged dust particles and the neutral-charged dust particles change from laminar to turbulent flow in the air mixing space. Colliding with each other to form a larger volume of dust particles, or a cluster of integrated dust particles, the bulky dust particles, or a cluster of dust particles, which are filtered as the wind flows through the filter. Capturing, in which the filter captures a large volume of dust particles, which greatly increases the chance of capturing smaller particles of dust that have not been collected. Significantly increased the air purifying effect.

The above-mentioned embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

An air purifying device for purifying air containing dust particles, the air purifying device having an air inlet and an air outlet, and an air flow passage formed between the air inlet and the air outlet, characterized by comprising:

a hair dryer comprising a fan air inlet and a fan air outlet, wherein the air blower is used to blow air along an air flow passage from an air inlet of the air purification device to an air outlet of the air purification device;

An ionizer comprising a circuit arrangement and an ion release tip;

a filter comprising a screen and a frame for fixing the screen for capturing dust particles in the air;

An air mixing space, one end of the output air of the air mixing space is communicated with the air outlet of the air purifying device through a filter, and one end of the input air of the air mixing space is communicated with the air inlet of the air purifying device through the blower The air mixing space is a turbulent or turbulent space; the air pressure of the air mixing space is greater than the air pressure outside the air inlet and the air outlet.
The air cleaning apparatus according to claim 1, wherein said ion releasing tip is provided in said air mixing space.
The air cleaning apparatus according to claim 1, wherein said blower is located at an most upstream position of said air purifying device, said filter is located at a most downstream position of said air purifying device, and said ion releasing tip is disposed at said The air mixing space.
The air cleaning apparatus according to claim 1, wherein said blower is located at an most upstream position of said air purifying device, said filter is located at a most downstream position of said air purifying device, and said ion releasing tip is disposed at said The air mixing space and the position between the blowers, the position airflow being a boundary position of laminar flow and turbulence or turbulence.
The air purifying apparatus according to claim 1, wherein said filter is a filter having a low wind resistance value, said wind resistance value, a speed at which said air purifying device blows out airflow, in an unplaced position The difference is not higher than 30% before and after the filter is placed.
The air purifying apparatus according to claim 1, wherein said filter is a filter having a low wind resistance value, said wind resistance value, a speed at which said air purifying device blows out airflow, in an unplaced position Comparing the filter before and after placing the filter, it is no more than 25 percent difference.
The air purifying apparatus according to claim 1, wherein said filter is a filter having a low wind resistance value, said wind resistance value, a speed at which said air purifying device blows out airflow, in an unplaced position The difference is not higher than 20% before and after the filter is placed.
The air purifying apparatus according to claim 1, wherein said filter is a filter having a low wind resistance value, said wind resistance value, a speed at which said air purifying device blows out airflow, in an unplaced position The difference between the filter before and after the filter is placed is no more than 15% difference.
The air purifying apparatus according to claim 1, wherein a volume of the air mixing space, that is, a cross-sectional area (A) through which the airflow flows, multiplied by a length or a distance (L) through which the airflow flows, Wherein the volume of the air mixing space is sufficient to allow the airflow to be therein for not less than 0.01 seconds, so that the airflow has sufficient time to stay in the air mixing space, causing the charged dust particles in the air to collide with each other and gather together. Become a larger dust particle.
The air purifying apparatus according to claim 1, wherein the filter has a wind resistance value of 80 Pa or less at a face wind speed of 5.33 cm/sec.
The air purifying apparatus according to claim 1, wherein the filter has a wind resistance value of 50 Pa or less at a face wind speed of 5.33 cm/sec.
The air purifying apparatus according to claim 1, wherein the filter has a wind resistance value of 25 Pa or less at a face wind speed of 5.33 cm/sec.
The air purifying apparatus according to claim 1, wherein the filter has a wind resistance value of 17 Pa or less at a face wind speed of 5.33 cm/sec.
The air purifying apparatus according to claim 1, wherein the filter has an intercepting efficiency of 99.97% or less for minute dust or particles having a size of 0.3 μm.
The air purifying apparatus according to claim 1, wherein the filter has an intercepting efficiency of 99.9% or less for minute dust or particles having a size of 0.3 μm.
The air purifying apparatus according to claim 1, wherein the filter has an intercepting efficiency of 99.5% or less for minute dust or particles having a size of 0.3 μm.
The air purifying apparatus according to claim 1, wherein the filter has an intercepting efficiency of 99% or less for minute dust or particles having a size of 0.3 μm.
The air cleaning apparatus according to claim 1, wherein the blower is a centrifugal blower or a backward curved vane blower.
The air cleaning apparatus according to claim 1, wherein the ion releasing tip is non-uniformly disposed on a cross section of the air flow passage such that a part of the dust particles in the air become charged dust particles.
The air cleaning apparatus according to claim 1, wherein said blower is disposed at an upstream position of said ion releasing tip, said filter being disposed at a position downstream of said ion releasing tip, said air mixing space being located The position between the blower and the filter.
The air cleaning apparatus according to claim 20, wherein the ion releasing tip is located at a fan air outlet and adjacent to one side of the cross section of the fan air outlet.
The air purifying apparatus according to claim 20, wherein said fan air outlet has a cross section which is increased from small to large, and the ion releasing tip is disposed at a side of the fan air outlet which is close to the high speed flow position of the air flow.
The air cleaning apparatus according to claim 20, wherein said ion releasing tip is disposed at a side of said air mixing space adjacent to said fan air outlet and adjacent to a cross section of said fan air outlet.
The air cleaning apparatus according to claim 20, wherein said ion releasing tip is disposed at a boundary point of the airflow of said air mixing space, and at said boundary of said airflow, said airflow is changed from laminar flow to turbulent flow or turbulent flow.
The air purifying apparatus according to claim 1, wherein an upstream position of the frame of the filter is connected to at least one conductive mesh, and the conductive mesh is connected to a ground of the circuit device of the ion generator; Or the frame of the filter is a conductive frame.
A method for purifying air by using an air purifying device, the air purifying device having an air inlet and an air outlet, and an air flow passage formed between the air inlet and the air outlet, the method comprising the following steps:

Using a hair dryer to blow air containing dust particles along the airflow channel from the air inlet of the air purification device to the air outlet of the air purification device;

The ion generator is used to release ions so that the dust particles in the air become charged dust particles;

In a turbulent or turbulent air mixing space, the charged dust particles in the air collide with each other and gather together to become larger dust particles;

A filter is used to capture the larger volume of dust particles that are gathered together in the air.
The air purification method according to claim 26, wherein the ion generator is used to release ions so that part of the dust particles in the air become charged dust particles, and in a turbulent or turbulent air mixing space, The charged dust particles in the air and the uncharged dust particles collide with each other and are brought together to form a larger dust particle.
The air purification method according to claim 26, wherein the air purification device comprises: at least one air inlet; at least one air outlet;

At least one blower; at least one filter for capturing dust particles in the air; at least one ion generator including a circuit device and an ion release tip; at least one air mixing space; the air mixing space being located in the blower And between the filters, the ion release tip of the ionizer is located in the air mixing space; part or all of the space of the air mixing space is a turbulent or turbulent space.
The air purification method according to claim 26, wherein the air pressure of the air mixing space is higher than the air pressure outside the air inlet and the air outlet, or the air pressure around the outside of the air cleaning device. air pressure.
The air purification method according to claim 26, wherein the filter faces one side of the air mixing space, and the side of the filter facing the outside of the air purifying device or the side of the air outlet is higher Air pressure.
The air purification method according to claim 26, wherein said filter is a low-resistance filter, said ionizer is turned on and off, cooperates with said filter application, and said filter Under different conditions of opening and closing of the ion generator, different particle size and size of dust particles have different capturing performance.
The air purification method according to claim 31, wherein the filter captures a large volume of dust particles in the air before the ion generator is not energized, and the dust particles having a smaller volume are captured. The trapping efficiency is higher; after the ionizer is energized, the filter captures a smaller volume of dust particles in the air, which is captured compared to the smaller volume of dust particles captured when the ionizer is not activated. More effective.
The air purification method according to claim 26, wherein the air purifying device determines and controls the operation of the energization switch of the ion generator according to the level of different volume of dust particles in the surrounding environment to capture by targeted control. Different volumes of dust particles in the air effectively utilize low-resistance filters, so that low-resistance filters can be flexibly used to remove different volumes of dust particles.
The air purification method according to claim 26, wherein the air purifying device is provided with two or more modes of operation, including a filter mode for filtering dust particles having a small volume and filtering dust particles having a large volume, When the dust particles having a small volume are filtered, the ion generator is energized, and when the dust particles having a large volume are filtered, the ion generator is powered off and does not operate.
The air purification method according to claim 34, wherein said air purifying device comprises at least one sensor for measuring temperature, humidity, volatile organic compounds, dust particles having a small volume, and volume ratio. At least one of dust particles, formaldehyde, carbon dioxide, carbon monoxide, dust, ozone, nitrogen oxides, bacteria, helium, wind speed, wind, air pressure, ambient lightness, sound, and various levels of radiation in the air.
The air purification method according to claim 35, wherein the sensor measures at least one of ambient, or air entering the air cleaning device, or air blown from the air cleaning device; and then measuring according to the sensor Data, and/or based on external environmental data connected to the air purification device and input, and/or based on personal data of the user connected and input with the air purification device, the measured data is evaluated to the user The severity of the health effects caused by the determination and control of the ion generator's power switch operation.
The air purification method according to claim 35, wherein an operation mode of the air cleaning device is performed by the sensor to measure a level and a measure of dust particles before entering the air cleaning device from the air purifying device. The level of dust particles is then compared to the previous two to judge control.