CN107477698A - Air purifier - Google Patents

Abstract

The invention relates to an air purifier, comprising a casing, a HEPA filter screen and a fan assembly installed in the casing, a roller blind installed in the casing, a motor assembly for driving the roller blind to rotate, and A water tank for the wetness of the roller shade that is capable of coarse filtration of the air before entering the HEPA filter for fine filtration. The invention can reduce the replacement frequency of the HEPA filter screen.

Description

air purifier

technical field

The invention relates to an air purifier, in particular to a HEPA filter type air purifier.

Background technique

Among the existing household air purifiers, the more commonly used purification method is to use HEPA (High efficiency Particulate air Filter, high-efficiency air purifier) filter type for air purification. This air purifier is equipped with a HEPA filter and a fan assembly inside. Its working principle is that the internal fan assembly works to force the indoor air to flow in from the air inlet of the air purifier. The air outlet is blown out to achieve the purpose of air purification. On the one hand, the HEPA filter can filter 99.97% of air pollutants above 0.3 microns, and the purification effect is good. On the other hand, HEPA filtration is a physical method of filtration. Solid particle pollutants in the air will be adsorbed on the HEPA filter. As more and more pollutants are adsorbed, the filtering effect of the HEPA filter will become worse and worse. , and even produce secondary pollution, so the HEPA filter needs to be replaced regularly. Frequent replacement operations will not only increase the cost of use, but also affect the user experience.

Contents of the invention

The technical problem to be solved by the present invention is that, aiming at the above-mentioned defects of the prior art, the present invention proposes an air purifier, which can reduce the replacement frequency of the HEPA filter.

The technical solutions adopted by the present invention to solve the technical problems include: providing an air purifier, including a casing, a HEPA filter screen and a fan assembly installed in the casing; it also includes: The roller blind, the motor assembly for driving the roller blind to rotate, and the water tank for soaking the roller blind are used for rough filtering the air before entering the HEPA filter screen for fine filtering.

In some embodiments, the casing includes a front casing and a rear casing that cooperate with each other; the fan assembly is installed in the front casing, and the HEPA filter, roller blind and motor assembly are installed in the rear casing, Described water tank is installed in the bottom of this casing.

In some embodiments, it also includes: a driving shaft and a driven shaft that are arranged in the rear shell and respectively match with the top end and the bottom end of the roller blind, the driving shaft can be driven to rotate by the motor assembly, and the slave shaft The bottom of the moving shaft and the roller blind is immersed in the water of the water tank.

In some embodiments, the driving shaft is provided with a plurality of clamping blocks, and the roller blind is provided with a plurality of clamping holes, and these clamping blocks can be correspondingly inserted into these clamping holes, so that the roller blind and the driving shaft combine together.

In some embodiments, the roller blind is installed vertically, and the diameter of the driving shaft is larger than that of the driven shaft.

In some embodiments, fixed shafts protrude from the inner walls of both sides of the rear shell, and are used for interstitial cooperation with the inner hole of the driven shaft.

In some embodiments, the front side of the front case is provided with an air outlet, the rear side of the rear case is provided with an air inlet, the front side of the rear case is provided with an air outlet, and the fan assembly is provided with an outlet connected to the rear case. The air suction port corresponding to the air port and the air outlet corresponding to the air outlet of the front shell.

In some embodiments, the fan assembly includes a cross-flow rotor.

In some embodiments, the motor assembly includes a motor and a bracket for installing the motor, and the bracket is fixed on the side wall of the rear case by fasteners.

In some embodiments, a dust-proof net is installed on the back of the rear case.

Compared with the prior art, the air purifier of the present invention enters the HEPA with the aid of a pair of wet curtains by ingeniously arranging a roller blind, a motor assembly for driving the roller blind to rotate, and a water tank for soaking the roller blind. The coarse filtration of the air before the fine filtration of the filter screen can prolong the service life of the HEPA filter screen, thereby reducing the replacement frequency of the HEPA filter screen.

Description of drawings

FIG. 1 is a perspective view from an angle of an embodiment of the air purifier of the present invention.

Fig. 2 is a perspective view from another angle of the embodiment of the air purifier of the present invention.

Fig. 3 is an exploded perspective view of an embodiment of the air purifier of the present invention.

Fig. 4 is a cross-sectional view of an embodiment of the air purifier of the present invention.

FIG. 5 is a partially enlarged view of area A in FIG. 4 .

FIG. 6 is a partially enlarged view of area B in FIG. 4 .

Fig. 7 is a schematic diagram of the working process of the embodiment of the air purifier of the present invention.

Reference numerals: 100 air cleaner 1 front shell 2 fan assembly 3 rear shell 4 motor assembly 5 fixing piece 6 water tank 7 HEPA filter screen 8 driven shaft 9 driving shaft 10 roller shutter 11 dustproof net 12 water 15 air before purification 16 Purified air 110 Air outlet 21 Air outlet 22 Windshield 23 Wind wheel 24 Air suction outlet 25 Air duct 26 Motor 31 Air outlet 32 Fixed shaft 41 Fastener 42 Motor 43 Bracket 61 Handle 81 Inner hole 91 Block 101 Card hole.

detailed description

Now in conjunction with the accompanying drawings, the preferred embodiments of the present invention will be described in detail.

Referring to Fig. 1 to Fig. 7, the present invention takes a household air purifier as an example, and proposes an air purifier 100, which includes: a front shell 1, a fan assembly 2, a rear shell 3, a synchronous motor assembly 4, fasteners 5, Water tank 6, HEPA filter screen 7, driven shaft 8, driving shaft 9, roller blind 10 and dustproof net 11. Wherein, the driven shaft 8 and the bottom of the rolling screen 10 are immersed in the water 12 of the water tank 6, and the air 15 before purification is filtered through the rolling screen 10 and the HEPA filter screen 7 in sequence, and then sent out by the fan assembly 2 after purification. Air 16. It can be understood that the rear case 3 cooperates with the front case 1 to form a closed casing.

The front shell 1 is provided with an air outlet 110 . The fan assembly 2 includes: a windshield 22 , a wind wheel 23 , an air duct 25 and a motor 26 . Wherein, the air outlet 21 corresponding to the air outlet 110 is enclosed by the windshield 22 and the front side of the air duct 25 . The air suction port 24 is enclosed by the windshield 22 and the rear side of the air channel 25 . In this embodiment, the wind wheel 23 is a cross-flow wind wheel. In other embodiments, other wind wheels such as centrifugal wind wheels and axial flow fan blades may also be used. The fan assembly 2 is installed in the front shell 1 .

The rear side of the rear case 3 is provided with an air inlet, and the front side of the rear case 3 is provided with an air outlet 31 , and the air outlet 31 corresponds to the aforementioned air suction port 24 . Fixed shafts 32 protrude from the inner walls of both sides of the rear housing 3 for correspondingly installing the driven shaft 8 . This water tank 6 is installed in the bottom of casing. The rear side of the water tank 6 is provided with a handle 61 . The HEPA filter 7 is installed in the rear shell 3 and attached to the air outlet 31 .

The motor assembly 4 is installed in the rear shell 3 , and includes: a fastener 41 , a motor 42 and a bracket 43 . Wherein, the motor 42 is a synchronous motor. The motor assembly 4 is fixed in the rear shell 3 through a fastener 5 . In this embodiment, the fastener 5 is a screw. The driving shaft 9 is installed on the upper part of the rear shell 3 and engaged with the rotating shaft of the motor 42 . The driven shaft 8 is mounted on the lower part of the rear case 3 , and its inner hole 81 is in clearance fit with the fixed shaft 32 of the rear case 3 . In this embodiment, the roller blind 10 is installed vertically, and the diameter of the driving shaft 9 is larger than that of the driven shaft 8 . That is to say, viewed from the side, the roller blind 10 is in the shape of an inverted triangle with a large top and a pointed bottom.

The installation process of the HEPA filter screen 7 and the roller blind 10 in the air purifier 100 generally includes: first install the driven shaft 8 and the driving shaft 9 in the rear case 3; then, install the HEPA filter screen 7 into the rear case 3 Next, hang the roller blind 10 on the driving shaft 9 and the driven shaft 8, and the locking hole 101 on the roller blind 10 is correspondingly buckled into the block 91 on the driving shaft 9, so that the roller blind 10 and the driving shaft 9 are combined together ; At last load onto the dust-proof net 11 on the back of rear shell 3. With this structure, the motor 42 can drive the drive shaft 9 to rotate, and the roller blind 10 follows the drive shaft 9 to rotate.

The working principle of the air purifier 100 generally includes: the water tank 6 is filled with water 12, and then it can be energized; Under the driving of the roller, the circular rotation of counterclockwise is done, because the roller blind 10 is partly immersed in the water 12, so the whole roller blind 10 will be drenched in the end.

When the motor 42 is powered on, the motor 26 in the fan assembly 2 will also drive the wind wheel 23 to rotate at a high speed in the air duct 25 . The air in the air cleaner 100 is sucked into the inside of the fan assembly 2 by the wind wheel 23 , enters from the air suction port 24 , flows out from the air outlet 21 , and finally blows out from the air outlet 110 on the front shell 1 . At this time, negative pressure is formed inside and outside the air purifier 100, and the air 15 before purification can enter the air purifier 100 from the dust-proof net 11 by itself, first pass through the roller shutter 10, then pass through the HEPA filter 7, and finally pass through the rear shell 3 The air outlet 31 of the air purifier is released into the cavity in the body, and then sucked away by the fan assembly 2 and blown out of the air cleaner 100. This cycle can continuously provide purified air 16.

In the air purifier 100, the dust-proof net 11 is the first filter barrier, which can absorb larger-sized solid particle pollutants in the air. The roller blind 10 is the second filter barrier, and part of the solid particle pollutants and water-soluble gas pollutants in the air are absorbed by the moisture attached to the roller blind 10 and trapped on the roller blind 10 . Specifically, the rotating roller blind 10 is soaked in the water 12 of the water tank 6, and the airborne dust and water-soluble gas attached to the roller blind 10 are transferred from the roller blind 10, dissolved in the water 12 in the water tank 6, and rolled The curtain 10 can be cleaned by itself, and can absorb the floating dust in the air and the gas soluble in water again. In this way, the roller blind 10 further coarsely filters the air. After the above two coarse filtrations, the air finally enters the cavity in the air cleaner 100 after passing through the HEPA filter 7 for final fine filtration, and is extracted from the air cleaner 100 by the fan assembly 2 .

The beneficial effects of the air cleaner 100 of the present invention include: the air 15 before purification is first washed and filtered by the roller blind 10, which can improve the filtration efficiency; It can reduce the amount of pollutants adsorbed on the HEPA filter screen 7, prolong the service life of the HEPA filter screen 7, thereby reducing the replacement frequency of the HEPA filter screen, reducing the cost of use, and improving user experience; During the washing and purification process, water evaporates into the air, which can also achieve the effect of humidifying the indoor air.

It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them. Those skilled in the art can modify the technical solutions described in the above embodiments, or modify some of the technical features. Perform equivalent replacements; and these modifications and replacements should all belong to the protection scope of the appended claims of the present invention.

Claims (10)

1. An air cleaner, comprising a casing and a HEPA filter screen and a blower assembly installed in the casing; it is characterized in that it also includes: a roller blind installed in the casing, for driving the roller blind The rotating motor assembly and the water tank used for soaking the roller blind are used for rough filtering the air before entering the HEPA filter for fine filtering. 2. The air cleaner according to claim 1, wherein the casing includes a front shell and a rear shell that cooperate with each other; the fan assembly is installed in the front shell, and the HEPA filter screen, roller shutter and the motor assembly are installed in the rear shell, and the water tank is installed in the lower part of the casing. 3. The air purifier according to claim 2, further comprising: a driving shaft and a driven shaft which are installed in the rear shell and respectively match with the top end and the bottom end of the roller blind, the driving shaft The shaft can be driven to rotate by the motor assembly, and the driven shaft and the bottom of the roller blind are soaked in the water of the water tank. 4. The air purifier according to claim 3, characterized in that, the driving shaft is provided with a plurality of clamping blocks, and the roller blind is provided with a plurality of clamping holes, and these clamping blocks can be correspondingly clamped into these clamping holes in, so that the roller blind is combined with the driving shaft. 5. The air cleaner according to claim 3, wherein the roller blind is installed vertically, and the diameter of the driving shaft is larger than that of the driven shaft. 6 . The air purifier according to claim 3 , wherein fixed shafts protrude from the inner walls of both sides of the rear shell, and are used to cooperate with the inner hole of the driven shaft. 6 . 7. The air cleaner according to claim 2, characterized in that, the front side of the front shell is provided with an air outlet, the rear side of the rear shell is provided with an air inlet, and the front side of the rear shell is provided with an air outlet, The fan assembly is provided with an air suction port corresponding to the air outlet of the rear shell and an air outlet corresponding to the air outlet of the front shell. 8. The air cleaner according to claim 7, wherein the fan assembly comprises a cross-flow fan wheel. 9 . The air cleaner according to claim 2 , wherein the motor assembly comprises a motor and a bracket for installing the motor, and the bracket is fixed on the side wall of the rear case by fasteners. 10. The air purifier according to claim 2, characterized in that a dust-proof net is installed on the back of the rear case.