WO2018216965A1

WO2018216965A1 - Blower unit of heating, ventilating and air-conditioning system for vehicle

Info

Publication number: WO2018216965A1
Application number: PCT/KR2018/005708
Authority: WO
Inventors: 강인근; 고재우; 김영근; 한규익
Original assignee: 한온시스템 주식회사
Priority date: 2017-05-22
Filing date: 2018-05-18
Publication date: 2018-11-29

Abstract

Disclosed is a blower unit of a heating, ventilating and air-conditioning system for a vehicle, which is a blower unit having a two-layer flow structure, is provided with a means for smoothly guiding air, flowing in an axial direction, to a radial direction, and defines an optimized structure and arrangement for fixing the guide means.

Description

Blowing unit of vehicle air conditioner

The present invention relates to a blower unit of a vehicle air conditioner, and more particularly, in the air conditioner of the two-layer flow structure to ensure high heating performance while ensuring defogging performance during heating, bet or outside air to the inside of the air conditioning case A blower unit for a vehicle air conditioner of a two-layer flow structure to selectively suck.

In general, a vehicle air conditioner is a device for heating or cooling a room by introducing external air into a room or by circulating the air in the room to heat or cool the room. An evaporator for a cooling action is provided inside the air conditioning case, and A heater core or the like is configured to selectively blow air cooled or heated by an evaporator or a heater core to each part of the vehicle interior.

In particular, a two-layer air conditioner has been developed in order to maintain a high heating performance while ensuring a defogging performance during heating. In winter heating run, low humidity cold air is effective to remove frost on the window, but the indoor temperature is lowered.

The two-layer air conditioner realizes two-layer air flow between the outside and the outside to supply air to the upper part of the vehicle and circulate the inside to the lower part for defogging during heating, thereby making the frost using fresh and low humidity supplied to the upper part. It effectively removes the air while providing fresh outside air to the occupants and provides a warm bet under to maintain high heating performance.

In Japanese Patent Application Publication No. 3900965 (January 12, 2007), filed beforehand, a blowing unit of an air conditioner for a two-layer flow vehicle has been disclosed. 1 is a cross-sectional view showing a blowing unit of a conventional two-layer air conditioner for a vehicle.

As shown in FIG. 1, the air blowing unit of the air conditioner for the two-layer flow vehicle includes a case 1, and the case 1 includes an air inlet 11 for introducing internal air and an air inlet 12 for introducing external air. Is formed. The case 1 is provided with an internal door 43 for adjusting the opening degree of the internal air inlet 11 and an external air door 44 for adjusting the opening degree of the external air inlet 12. An air filter 5 is provided downstream of the inner and

outer doors

43 and 44 in the air flow direction.

The downstream side of the air filter 5 is provided with

dual fans

2 and 3 which are rotated by a motor, and the downstream side of the

dual fans

2 and 3 is provided with a first blower passage by the partition 14 of the case 1. 15 and the second blow passage 16 are formed. The inner door 43 and the outer air door 44 are rotated about the rotation shaft 41, and the partition plate 42 is integrally formed.

The partition plate 42 is composed of a first plate portion 42a extending from the rotary shaft 41 to the arcuate surface side of the case 1 and a second plate portion 42b extending from the rotary shaft 41 to the air filter 5 side. . In the two-laminar flow mode, the front end of the first plate part 42a is located between the internal and

external air inlets

11 and 12, so that the flow path connecting the first air passage 15 to the first air inlet 11 and the external air inlet ( In 12), flow paths connecting the second air blow passages 16 are distinguished.

Conventional two-layer blower unit has a problem that the air flowing in the axial direction by the rotation of the fan is blown in the radial direction, the wind does not move smoothly, the uniformity is inferior.

In order to solve such a conventional problem, in the present invention, in the blower unit having a two-layer flow structure, a means for smoothly guiding air flowing in the axial direction in the radial direction is provided, and an optimized structure and arrangement for fixing the guide means are provided. It provides a blowing unit of the vehicle air conditioner defined.

The air blowing unit of the vehicle air conditioner according to the present invention is a blowing unit of the vehicle air conditioner of the two-layer structure that can be sucked by dividing the inside and the outside, the first inlet and the second inlet for sucking at least one of the inside and the outside air A scroll case having a first passage that is a passage of air through the first inlet and a second passage that is a passage of air through the second inlet; A first fan provided in the first passage for sucking air from the first inlet; A second fan arranged in an axial direction with respect to the first fan and provided in the second passage to suck air from a second inlet; A motor for rotationally driving the first fan and the second fan; And a guide part provided in the scroll case to guide the air sucked in the axial direction through the inlet in a radial direction, wherein the guide part is provided in the first guide part and the second passage provided in the first passage. It consists of two guide parts.

In the above, at least one of the plurality of guide parts is formed integrally with the fan.

In the above, the second guide portion is integrally formed with the second fan.

In the above, the first guide portion is separately coupled to the upper portion of the second guide portion.

In the above, the guide portion is composed of a cylindrical member having a cylindrical shape.

In the above, the guide portion has a tapered shape in which the inclined surface is formed such that the cross-sectional diameter increases from the upstream side to the downstream side in the air flow direction.

In the above, having a main body having a boss for coupling the rotational axis of the motor, the first fan is provided on the upper portion of the main body and the second fan is provided on the lower portion.

In the above, the motor has an extension shaft extending in the axial direction from the rotation axis, the first guide portion has a second boss for engaging the extension shaft.

In the above, the second guide portion is integrally formed in the downward direction from the main body.

In the above, the second guide portion is composed of a cylindrical member with an upper opening, and the first guide portion covers the opening of the second guide portion.

In the above description, the plurality of fans are formed to have different diameters, and the plurality of guide parts are formed with different inclinations according to the diameter of the fan.

In the above, the inclination value of the guide part of the fan of larger diameter is formed larger than the inclination value of the guide part of the fan of smaller diameter.

In the above, the inclination value of the guide portion of the fan disposed in the air passage farther from the air inlet is formed larger than the inclination value of the guide portion of the fan disposed in the air passage closer to the distance from the air inlet.

In the above, the rotating shaft of the motor is assembled through all of the plurality of guide parts.

In the above, the end of the rotating shaft of the motor is fixed using a clip.

In the above, a space portion is formed inside the guide portion.

In the above, the guide portion is provided with at least one rib for rigid reinforcement.

In the above, the lower guide portion has a step portion corresponding to the motor housing.

In the above, a groove is formed in one of the main body and the upper guide portion, and a protrusion formed in the other is formed in the groove.

According to another aspect of the present invention, a blowing unit of an air conditioner for a vehicle includes: a blowing unit of a vehicle air conditioner having a two-layer structure capable of inhaling the inside and the outside air, the first inlet and the second suctioning at least one of the inside and the outside air; A scroll case having a second inlet, the first passage being an air passage through the first inlet and a second passage being an air passage through the second inlet; A first fan provided in the first passage for sucking air from the first inlet; A second fan arranged in an axial direction with respect to the first fan and provided in the second passage to suck air from a second inlet; A motor for rotationally driving the first fan and the second fan; And a guide part provided in the scroll case to guide the air sucked in the axial direction through the inlet in a radial direction, the guide part being integrally formed with the second fan.

In the above, the first fan is provided in the upper portion and the main body is provided with the second fan in the lower portion, the guide portion is formed integrally extending downwardly inclined downward from the main body and the cylindrical shape of the upper opening And a flat cover member covering the upper opening of the cylindrical member.

The air blowing unit of the vehicle air conditioner according to the present invention is provided with guide means in both passages to evenly discharge the flow air without swelling and is easy to manufacture by providing an optimum arrangement and structure in consideration of formability.

1 is a cross-sectional view showing a blowing unit of a conventional two-layer air conditioner for a vehicle,

2 is a cross-sectional view showing a blowing unit of the vehicle air conditioner according to the first embodiment of the present invention,

3 is an enlarged cross-sectional view of the guide unit of FIG. 2;

4 is an enlarged perspective view of the guide part of FIG. 2;

5 shows a first fan according to a first embodiment of the present invention,

6 is a cross-sectional view showing a blowing unit of the vehicle air conditioner according to the second embodiment of the present invention,

7 is an enlarged cross-sectional view of the guide unit of FIG. 5.

Hereinafter, the technical configuration of the air blowing unit of the vehicle air conditioner according to the accompanying drawings in detail as follows.

2 is a cross-sectional view illustrating a blowing unit of a vehicle air conditioner according to a first embodiment of the present invention, FIG. 3 is an enlarged cross-sectional view of the guide unit of FIG. 2, and FIG. 4 is an enlarged cut of the guide unit of FIG. 2. 5 is a perspective view illustrating a first fan according to a first embodiment of the present invention. In the following description, the up-down direction in FIG. 2 is the "axial direction" and the left-right direction is the "radial direction".

2 to 5, the air blowing unit 100 of the vehicle air conditioner according to the first embodiment of the present invention is a two-layer structure that can be sucked by dividing the inside and the outside, the scroll case 110 and And a first fan 120, a second fan 130, a motor 160, and a guide part.

The scroll case 110 has a first inlet 111 and a second inlet 112 that suck at least one of the inside and the outside air. The scroll case 110 is provided with a first passage 113, which is a passage of air through the first inlet 111, and a second passage 114, which is a passage of air through the second inlet 112. The upper portion of the scroll case 110 is combined with an intake unit (not shown) having an internal air inlet and an external air inlet, and internal and external air switching doors for selectively introducing the internal and external air.

The first inlet 111 opens toward the top and the second inlet 112 opens toward the bottom. The first passage 113 has a scroll shape and air is sucked from the first inlet 111 through the first passage 113. The second passage 114 has a scroll shape and air is sucked in from the second inlet 112 through the second passage 114. The end 115 of the scroll case 110 is opened and connected to the air conditioning unit.

The first fan 120 is provided in the first passage 113 to suck air from the first inlet 111. The second fan 130 is provided in the second passage 114 to suck air from the second inlet 112. The first fan 120 and the second fan 130 are made of a centrifugal fan. An edge portion 129 is configured to connect a plurality of wheels to wheel ends of the first fan 120 and the second fan 130. By rotation of the first fan 120 and the second fan 130, air is sucked in the axial direction and sent to the outside of the scroll case 110 in the radial direction.

The first fan 120 and the second fan 130 are arranged in the axial direction and are connected to each other by the main body 140 of a disk (or board) shape. The inner end, ie, the lower end, in the axial direction of the first fan 120 is connected to each other by the inner end, ie, the upper end, and the main body 140 in the axial direction of the second fan 130.

The main body 140 has a boss 141 at the center thereof. The boss 141 protrudes from the second fan 130 toward the first fan 120. The rotating shaft 162 of the motor 160 is inserted into and connected to the boss 141. The first fan 120 is provided above the main body 140, and the second fan 130 is provided below. The second inlet 112 is covered by a cover under the scroll case 110. The motor 160 rotates the first fan 120 and the second fan 130.

The guide part is made of a cylindrical member and is provided in the scroll case 110 to guide the air sucked in the axial direction through the inlet in the radial direction. The guide part includes a first guide part 300 provided in the first passage 113 and a second guide part 200 provided in the second passage 114.

The first guide part 300 is an upper guide part, and the second guide part 200 is a lower guide part. The first guide part 300 guides the air sucked through the first inlet 111 to be discharged through the first passage 113. The second guide part 200 guides the air sucked through the second inlet 112 to be discharged through the second passage 114.

The second guide part 200 is provided in the motor 160 and is disposed inside the wing part of the second fan 130 in the radial direction from the inside of the second inlet 112. Preferably, the second guide part 200 is disposed inside the wing part of the second fan 130 also in the axial direction. The second guide part 200 extends from the motor 160 toward the main body 140 in the axial direction so as to cover the rotation shaft 162 of the motor 160.

The second guide part 200 guides the wind sucked into the second inlet 112 so that the air can be discharged without being pulled into the wing of the second fan 130. The air is properly made by the second fan 130. It acts as a flow control element to be sucked in. In addition, the second guide portion 200 acts as a waterproof element that prevents water from entering the motor 160. The second guide part 200 is formed to be inclined in a tapered shape with a radially outer part.

The first guide part 300 is disposed inside the wing part of the first fan 120 in the radial direction from the inside of the first inlet 111. Preferably, the first guide part 300 is disposed inside the wing of the first fan 120 also in the axial direction. The first guide part 300 guides the wind sucked into the first inlet 111 so that the first guide part 300 can be discharged without being pulled into the wing of the first fan 120. The air is properly made by the first fan 120. It acts as a flow control element to be sucked in.

The second guide part 200 is integrally formed with the second fan 130. The second guide part 200 is integrally formed to be inclined downward from the main body 140 downwardly. That is, the guide part 200 has a taper shape in which an inclined surface is formed such that the diameter of the cross section increases from the upstream side to the downstream side in the air flow direction.

The second guide part 200 is formed integrally with the main body 140 to allow easy molding. The structure in which the guide part 200 is integrally formed in the second fan 130 is superior in formability when the mold design is considered in the injection molding method as compared with the structure in which the guide part is fixed to the scroll case. When the second guide part 200 considers a subtraction structure during injection molding, an opening is inevitably formed. For this reason, the upper portion of the second guide portion 200 is opened, and the first guide portion 300 covers the upper opening of the cylindrical member.

The first guide part 300 is separately coupled to the upper portion of the second guide part 200. The first guide part 300 covers the opening of the second guide part 200 so as to partition the first passage 113 and the second passage 114. In addition, the first guide part 300 is to guide the wind sucked into the first inlet 111 like the second guide part 200 to be discharged without being pulled into the wing of the first fan 120, It acts as a flow control element that allows air to be sucked up quickly by the first fan 120.

The second guide part 200 may improve the assemblability through the configuration formed integrally with the second fan 130. That is, in the case of the structure in which the guide part is formed up and down, only one guide part can be injection molded integrally in the mold withdrawal structure. In this case, when only one guide part is integrally injection molded, it is advantageous to assemble assembling the upper guide part separately.

On the other hand, the plurality of fans are formed with a different diameter, the plurality of guide portion is formed by changing the inclination according to the diameter of the fan. The inclination value of the guide part of the fan of larger diameter is formed larger than the inclination value of the guide part of the fan of smaller diameter. That is, the diameter d2 of the second fan 130 is larger than the diameter d1 of the first fan 120, and the inclination value of the second guide part 200 is inclination of the first guide part 300. It is formed larger than the value. The larger the diameter of the fan, the larger the air passage, and the lower the air pressure. Therefore, the inclination of the guide part on the side of the air passage having a relatively low air pressure can be increased to guide the air further.

Further, the inclination value of the guide portion of the fan disposed in the air passage farther from the air inlet is formed larger than the inclination value of the guide portion of the fan disposed in the air passage closer to the distance from the air inlet. That is, the inclination value of the second guide part 200 disposed farther from the air inlet is greater than the inclination value of the first guide part 300 on the opposite side. Since the direction is changed while passing through the air passage directly to the first passage 113 to increase the air resistance, the air flow guide is required on the side of the second passage 114, so that the slope of the second guide portion 200 is increased. Is formed larger than the inclination of the first guide portion 300.

In addition, the rotating shaft of the motor 160 is assembled while passing through all the plurality of guides. That is, the rotation shaft 162 of the motor 160 is assembled by sequentially passing through the second guide portion 200 and the first guide portion 300. The end of the rotating shaft of the motor 160 is fixed using a clip 325. Through this configuration, it is possible to visually check whether the fan is well assembled to the motor rotation shaft, thereby preventing the misassembly.

Space portions

128 and 328 are formed inside the guide portion. The first guide part 300 and the second guide part 200 have a hollow shape. As a result, weight can be saved and structural strength can be improved. In this case, it is preferable to have at least one

rib

127 and 327 for rigid reinforcement in the guide part. The rib 327 is injection molded integrally with the first guide part 300, and another rib 127 is injection molded integrally with the second guide part 200.

In addition, the lower guide part includes a stepped part 145 corresponding to the motor housing. The boss 141 formed on the second guide part 200 is provided with a plurality of stepped portions 145 stepped to have a diameter narrowed toward the upper portion. The stepped part 145 improves the assemblability when assembling the motor 160 and enhances the constraint force in the axial direction between the motor and the fan. The motor 160 has an extension shaft 163 extending in the axial direction from the rotation shaft 162. The first guide part 300 has a second boss 326 to which the extension shaft 163 is coupled.

In addition, a groove 147 is formed in the main body 140, and a protrusion 301 coupled to the groove 147 is formed in the first guide part 300, which is the upper guide part.

5 is a cross-sectional view illustrating a blowing unit of a vehicle air conditioner according to a second embodiment of the present invention, and FIG. 6 is an enlarged cross-sectional view of the guide unit of FIG. 5.

5 and 6, the blowing unit 100 of the vehicle air conditioner according to the second embodiment of the present invention includes a scroll case 110, a first fan 120, a second fan 130, , Including the motor 160 and the guide part 200. Since the scroll case 110, the first fan 120, the second fan 130, and the motor 160 are the same as in the first embodiment, description thereof will be omitted. Since the guide part 200 is similar in configuration to the second guide part 200 of the first embodiment, the same reference numerals are used.

The guide part 200 is formed of a cylindrical member having a cylindrical shape and provided in the scroll case 110 to guide the air sucked in the axial direction through the inlet in the radial direction. The guide part 200 is integrally formed with the second fan 130. The guide part 200 guides the air sucked through the second inlet 112 to be discharged through the second passage 114.

The first fan 120 and the second fan 130 are arranged in the axial direction and are connected to each other by the main body 140. The main body 140 has a boss 141 at the center thereof. The boss 141 protrudes toward the second fan 130. The rotating shaft 162 of the motor 160 is inserted into and connected to the boss 141. The first fan 120 is provided above the main body 140, and the second fan 130 is provided below.

The guide part 200 is integrally formed to be inclined downward from the main body 140 downwardly. That is, the guide part 200 has a taper shape in which an inclined surface is formed such that the diameter of the cross section increases from the upstream side to the downstream side in the air flow direction.

The guide portion 200 has an axially inner portion 220 extending from the main body 140 in the axial direction to the outside, that is, the lower portion, and an inclined surface 210 formed to have a smaller diameter from the axially inner portion 220 toward the lower portion. And an axial outer portion 230 extending downward from the inclined surface 210. The axial inner portion 220 and the axial outer portion 230 have a uniform diameter. Guide portion 200 is formed integrally with the main body 140 can be easily formed.

The air blowing unit of the vehicle air conditioner according to the present invention has been described with reference to the embodiment shown in the drawings, but this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. will be. Therefore, the true technical protection scope should be defined by the technical spirit of the appended claims.

Claims

In the blowing unit 100 of the vehicle air conditioner of the two-layer structure that can be sucked by dividing the inside and outside air,

The first inlet 111 and the second inlet 112 for sucking at least one of the inside and the outside air, the first passage 113 and the second inlet (the passage of air through the first inlet 111) ( A scroll case 110 in which a second passage 114, which is a passage of air through 112, is formed;

A first fan (120) provided in the first passage (113) for sucking air from the first inlet (111);

A second fan (130) arranged in the axial direction with respect to the first fan (120) and provided in the second passage (114) to suck air from the second inlet (112);

A motor 160 for driving the first fan 120 and the second fan 130 in rotation; And

It is provided in the scroll case 110 includes a guide for guiding the air sucked in the axial direction through the inlet in the radial direction,

The guide unit is a blowing unit of the vehicle air conditioner comprising a first guide portion 300 provided in the first passage 113 and a second guide portion 200 provided in the second passage (114).
According to claim 1,

At least one of the plurality of guide unit is a blowing unit of the vehicle air conditioner is formed integrally with the fan.
The method of claim 2,

The second guide part 200 is a blowing unit of the vehicle air conditioner is formed integrally with the second fan (130).
The method of claim 2,

The first guide unit 300 is a blowing unit of the vehicle air conditioner is coupled to the upper portion of the second guide portion 200 separately.
The method of claim 2,

The guide unit is a blowing unit of the air conditioner for a vehicle consisting of a cylindrical member made of a cylindrical shape.
The method of claim 5,

The air blowing unit of the air conditioner for a vehicle having a tapered shape in which the inclined surface is formed so that the cross-sectional diameter increases from the upstream side to the downstream side in the air flow direction.
The method according to claim 3 or 4,

The main body 140 having a boss 141 for coupling the rotating shaft 162 of the motor 160, the first fan 120 is provided on the upper portion of the main body 140, the lower Blowing unit of the vehicle air conditioner is provided with two fans (130).
The method of claim 4, wherein

The motor 160 has an extension shaft 163 extending in the axial direction from the rotation shaft 162, the first guide portion 300 has a second boss 326 for coupling the extension shaft 163. Blowing unit of vehicle air conditioner.
The method of claim 7, wherein

The second guide part 200 is a blowing unit of the air conditioner for a vehicle is formed integrally extending in the downward direction from the main body 140.
The method of claim 9,

The second guide portion 200 is composed of a cylindrical member with an upper portion opened,

The first guide part 300 is a blowing unit of the vehicle air conditioner to cover the opening of the second guide part 200.
According to claim 1,

The plurality of fans are formed in a different diameter, the plurality of guides blowing unit of the air conditioner for a vehicle is formed by varying the inclination according to the diameter of the fan.
The method of claim 11, wherein

A blowing unit of a vehicle air conditioner, wherein an inclination value of a guide part of a fan having a larger diameter is greater than an inclination value of a guide part of a fan having a smaller diameter.
According to claim 1,

And a slope value of the guide portion of the fan disposed in the air passage farther from the air inlet is greater than a slope value of the guide portion of the fan disposed in the air passage closer to the distance from the air inlet.
According to claim 1,

The rotary shaft of the motor 160 is a blowing unit of the air conditioner for a vehicle assembled through all the plurality of guide parts.
The method of claim 14,

Blowing unit of the vehicle air conditioner is fixed to the end of the rotary shaft of the motor 160 by using a clip (325).
According to claim 1,

Blowing unit of the vehicle air conditioner, characterized in that the space portion (128,328) formed in the guide portion.
The method of claim 16,

Blowing unit of the vehicle air conditioner having at least one rib (127,327) for rigid reinforcement in the guide portion.
According to claim 1,

The lower guide part is a blower unit of a vehicle air conditioner having a stepped portion 145 corresponding to the motor housing.
The method of claim 7, wherein

One of the main body 140 and the upper guide portion is provided with a groove 147, the other air blowing unit of the vehicle air conditioner is formed with a projection 301 is coupled to the groove 147.
In the blowing unit 100 of the vehicle air conditioner of the two-layer structure that can be sucked by dividing the inside and outside air,

The first inlet 111 and the second inlet 112 for sucking at least one of the inside and the outside air, the first passage 113 and the second inlet (the passage of air through the first inlet 111) ( A scroll case 110 in which a second passage 114, which is a passage of air through 112, is formed;

A first fan (120) provided in the first passage (113) for sucking air from the first inlet (111);

A second fan (130) arranged in the axial direction with respect to the first fan (120) and provided in the second passage (114) to suck air from the second inlet (112);

A motor 160 for driving the first fan 120 and the second fan 130 in rotation; And

It is provided in the scroll case 110 includes a guide for guiding the air sucked in the axial direction through the inlet in the radial direction,

The guide unit is a blowing unit of the vehicle air conditioner is formed integrally with the second fan (130).
The method of claim 20,

The first fan 120 is provided in the upper portion and the main body 140 is provided with the second fan 130 in the lower portion, the guide portion integrally inclined downward in the downward direction from the main body 140 A blower unit for an air conditioner for a vehicle, comprising: a cylindrical member having an extended shape and having an open upper portion, and having a flat cover member 145 covering the upper opening of the cylindrical member.