WO2018025532A1

WO2018025532A1 - Vehicle air-conditioning device

Info

Publication number: WO2018025532A1
Application number: PCT/JP2017/023396
Authority: WO
Inventors: 俊大森
Original assignee: 株式会社デンソー
Priority date: 2016-08-01
Filing date: 2017-06-26
Publication date: 2018-02-08
Also published as: JPWO2018025532A1

Abstract

This vehicle air-conditioning device comprises an air-conditioning casing (11), a cooling heat exchanger (13), a heating heat exchanger (15), a temperature adjusting door (17), and a fan device (20) which is disposed on the downstream side of the cooling heat exchanger in the air flow direction. The fan device has a first fan (21) which sucks in air from a first suction port (111) formed on one end in the axial direction and a second fan (22) which sucks in air from a second suction port (112) formed on the other end in the axial direction. A motor body (24a) is disposed in a path (111a) for allowing air to flow into one of the first suction port and the second suction port, and drives the fan device so as to be rotatable about the rotary shaft. A resistance member (30) is disposed in a path (112a) for allowing air to flow into the other suction port, and serves as a resistance to air flowing through the other suction port.

Description

Air conditioner for vehicles

Cross-reference to related applications

This application is based on Japanese Patent Application No. 2016-151386 filed on August 1, 2016, the contents of which are incorporated herein by reference.

This disclosure relates to a vehicle air conditioner.

Conventionally, two fans arranged on the downstream side of the air flow of the cooling heat exchanger are driven by one electric motor, and the suction port formed on one end side of the rotating shaft of the fan in the air conditioning casing and the other end side are driven. There is a vehicle air conditioner in which air is sucked from the formed suction ports. As such an air conditioner, there is one in which two fans and an electric motor disposed between the fans are accommodated in an air conditioning casing (see, for example, Patent Document 1).

JP 2009-23590 A

However, in the configuration in which the electric motor is disposed between the two fans, as in the air conditioner described in Patent Document 1, the air conditioning casing becomes large. Furthermore, it is necessary to form a power line for supplying power to the electric motor in the air conditioning casing, or to seal the power line to ensure water resistance, and the structure is complicated and the cost is increased. There is.

Also, in such a vehicle air conditioner, there is one in which the motor body of the electric motor is disposed outside the air conditioning casing to drive two fans provided in the air conditioning casing. However, in such a configuration, the motor body of the electric motor protrudes from the outside of the air conditioning casing, which causes a problem that the entire product becomes large.

Also, in such a vehicle air conditioner, there is one in which the motor body of an electric motor that drives the fan is housed inside the fan. However, in recent years, as the air conditioning casing has been reduced in size, the fan has also been reduced in size, which has caused problems such as the motor body being unable to be stored inside the fan and the motor body pressing the air passage. Yes.

Therefore, as shown in FIG. 6, a part of the motor body 24 a of the electric motor 24 that drives the

fans

21 and 22 is thrust into a passage 111 a that allows air to flow into the suction port 111 formed on one end side of the rotating shaft J in the axial direction. The inventor of the present application examined the arrangement of

In this case, since the central portion of the suction port 111 is closed by the motor body 24a of the electric motor 24, the other suction port 112 is not blocked, so that the operating balance of the upper and

lower fans

21 and 22 is not. The inventor found out that would collapse. That is, the lower fan 21 has a large suction resistance and has a low efficiency, and the upper fan 22 has a low suction resistance and has a high efficiency. Therefore, when these upper and lower fans are driven by one electric motor 24, the operation balance between the upper and

lower fans

21 and 22 is deteriorated, and the blowing noise is increased.

This disclosure aims at achieving both miniaturization and improvement of the operation balance of the blower.

According to one aspect of the present disclosure, a vehicle air conditioner includes an air conditioning casing having an air passage through which air flows, a cooling heat exchanger that is disposed in the air conditioning casing and cools air flowing through the air passage, and an air conditioning A heat exchanger for heating that heats the air cooled in the casing and is cooled by the heat exchanger for cooling, a cool air that flows into the heat exchanger for heating, and a bypass passage that flows around the heat exchanger for heating. A temperature adjusting door that adjusts the air volume ratio of the cool air flowing into the air flow side, and an air conditioning casing that is arranged to rotate around the axis of the rotary shaft downstream of the cooling heat exchanger in the air flow downstream of the air flow of air. A first fan that sucks air from a first suction port side that is formed on one end side in the axial direction of the rotating shaft and a second suction port that is formed on the other end side in the axial direction of the rotating shaft in the air conditioning casing. And a fan device having a second fan that sucks air from, and a passage through which air flows to one of the first suction port and the second suction port, and rotationally drives the fan device around the axis of the rotation shaft The resistance of the air flowing in the other suction port of the first suction port and the second suction port, which is arranged in the passage through which air flows to the other suction port of the motor body and the first suction port and the second suction port And a resistance member.

According to such a configuration, the motor main body is disposed in the passage through which air flows to one of the first suction port and the second suction port, and the other of the first suction port and the second suction port. Since the resistance member which becomes resistance of the air which flows into the other suction port of the 1st suction port and the 2nd suction port is arranged in the passage which flows air to the suction port of this, it is miniaturization and the operation balance of a fan Both improvements can be achieved.

It is sectional drawing which looked at the indoor air-conditioning unit of the vehicle air conditioner of 1st Embodiment from the vehicle left-right direction. FIG. 2 is a sectional view taken along line II-II in FIG. It is sectional drawing which looked at the indoor air-conditioning unit of the vehicle air conditioner of 2nd Embodiment from the vehicle left-right direction. It is sectional drawing which looked at the indoor air-conditioning unit of the vehicle air conditioner of 3rd Embodiment from the vehicle left-right direction. It is sectional drawing which looked at the indoor air-conditioning unit of the vehicle air conditioner of 4th Embodiment from the vehicle left-right direction. It is a figure for demonstrating a subject, Comprising: It is sectional drawing which looked at the indoor air conditioning unit of the vehicle air conditioner from the vehicle left-right direction.

Hereinafter, embodiments will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

(First embodiment)
Hereinafter, the vehicle air conditioner according to the first embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a sectional view of an indoor air conditioning unit 10 of a vehicle air conditioner according to the present embodiment as viewed from the left-right direction of the vehicle, and FIG. 2 is a sectional view taken along the line II-II in FIG. The up and down and front and rear arrows in FIG. 1 and the up and down and left and right arrows in FIG. 2 indicate directions in the vehicle mounted state, respectively.

The indoor air-conditioning unit 10 includes an air-conditioning casing 11 that forms an outer shell of the indoor air-conditioning unit 10 and forms an air passage for indoor blown air that is blown toward the vehicle interior. The air-conditioning casing 11 has a certain degree of elasticity and is formed of a resin that is excellent in strength. For example, the air conditioning casing 11 is configured using polypropylene.

The evaporator 13 is one of devices constituting a well-known vapor compression refrigeration cycle (not shown), and is used for cooling to cool indoor blown air by evaporating the low-pressure refrigerant in the refrigeration cycle and exhibiting an endothermic effect. It is a heat exchanger.

Inside the air conditioning casing 11, a thin plate-like air filter 14 is disposed on the air upstream side of the evaporator 13, and the air filter 14 removes dust and the like from the air flowing into the evaporator 13.

A heater core 15 is disposed on the vehicle rear side and the upper side on the downstream side of the air flow of the evaporator 13. The heater core 15 heats high-temperature engine cooling water circulating in an engine cooling water circuit (not shown) into the interior, heat-exchanges the engine cooling water and the cold air cooled by the evaporator 13, and reheats the cold air. Heat exchanger.

Next, a bypass passage 16 is formed behind the evaporator 13 and below the heater core 15. The bypass passage 16 is a passage through which the cool air that has passed through the evaporator 13 flows around the heater core 15.

Further, as shown in FIG. 1, on the downstream side of the air flow of the evaporator 13, as a temperature adjustment door that adjusts the air volume ratio between the cold air flowing into the heater core 15 side and the cold air flowing into the bypass passage 16 side. An air mix door 17 is arranged. The air mix door 17 adjusts the air volume ratio between the air volume that passes through the heater core 15 and the air volume that passes through the bypass passage 16 in the blown air that has passed through the evaporator 13 according to the rotation position of the air mix door 17. It functions as a temperature adjustment unit that adjusts the temperature of the air blown into the room. The operation of the air mix door 17 is controlled by a control signal output from an air conditioning control device (not shown).

In the air conditioning casing 11, a scroll casing 25 is provided on the downstream side of the air flow of the heater core 15 and the bypass passage 16. The scroll casing 25 constitutes a part of the air conditioning casing 11. A fan device 20 and an electric motor 24 are arranged in the scroll casing 25.

As shown in FIGS. 1 and 2, the fan device 20 is arranged in the air conditioning casing 11 so as to rotate about an axis of a rotation axis J extending in the vertical direction downstream of the evaporator 13 from the evaporator 13. . The fan device 20 blows air sucked in from the first suction port 111 provided on the lower side of the scroll casing 25 in the radially outward direction, and from the second suction port 112 side provided on the upper side of the scroll casing 25. It has a fan 22 that blows out the sucked air in the radially outward direction.

That is, the fan device 20 includes the fan 21 that sucks air from the first suction port 111 side provided on the one axial end side of the rotating shaft J in the air conditioning casing 11 and the other axial end side of the rotating shaft J in the air conditioning casing. It has the fan 22 which sucks in air from the 2nd inlet 112 provided in the side.

On the surface of the fan 21 that faces the fan 22, an opening that communicates with the surface of the fan 21 on the first suction port 111 side is formed. In addition, an opening that communicates with the surface of the fan 22 on the second suction port 112 side is formed on the surface of the fan 22 that faces the fan 21.

The air sucked by the fan 21 from the first suction port 111 side is blown out from the fan 21 in the radially outward direction, and the air sucked by the fan 22 from the second suction port 112 side is blown out from the fan 22 in the radially outward direction. The The fan 21 corresponds to the first fan, and the fan 22 corresponds to the second fan. The fan 21 and the fan 22 are connected by a shaft 24b of an electric motor 24 described later.

The electric motor 24 has a shaft 24b extending on both sides of the vehicle in the vertical direction, and a motor body 24a that rotationally drives the shaft 24b. The motor body 24a has a cylindrical upper portion 241 having a cylindrical shape and a conical portion 242 having a conical shape.

The fan 21 and the fan 22 are centrifugal multiblade fans, and the fan 21 is fixed to the shaft 24 b of the electric motor 24. The fan device 20 can suck air from both sides of the rotary shaft J and blow it out in the radially outward direction.

The scroll casing 25 houses the

fans

21 and 22 of the fan device 20 and forms an outflow air passage through which the air flowing out of the

fans

21 and 22 passes. The scroll casing 25 is formed in a spiral shape in which the cross-sectional area of the outflow air passage gradually increases in the direction of rotation of the

fans

21 and 22 of the fan device 20. The scroll casing 25 includes two suction ports provided on both sides of the rotation axis direction, and a blow-out port for blowing the blown air blown from the fan 22 upward.

A partition wall 18 is formed inside the air conditioning casing 11 on the rear side of the heater core 15 in the vehicle. As shown in FIG. 1, the partition wall 18 guides hot air blown from the evaporator 13 through the heater core 15 to the fan 22, and cool air blown from the evaporator 13 through the bypass passage 16 to the fan 21. A guide wall for guiding to is constructed.

Inside the air conditioning casing 11, a first passage 111 a for flowing air to the first suction port 111 is formed between the partition wall 18 and the first suction port 111, and between the partition wall 18 and the second suction port 112. Is formed with a second passage 112 a for flowing air to the second suction port 112.

The motor main body 24a of the present embodiment is arranged so as to be hard to enter the inside of the fan 21 of the fan device 20 from the first suction port 111 side for miniaturization. Specifically, a part of the conical part 242 of the motor main body 24 a is arranged so as to be difficult to fit inside the fan 21. For this reason, the central portion of the first suction port 111 is in a state of being blocked by the motor body 24 a of the electric motor 24.

Further, a resistance member 30 serving as a resistance of the air flowing through the second passage 112a is provided in the second passage 112a through which air flows to the second suction port 112 inside the air conditioning casing 11. Specifically, the resistance member 30 has a convex portion 31 that protrudes from the wall surface of the air conditioning casing 11 toward the passage 112 a reaching the second suction port 112 inside the air conditioning casing 11.

In addition, the convex part 31 is comprised using resin, and has comprised the same shape as the motor main body 24a. Specifically, the convex portion 31 has a cylindrical upper portion 311 having a cylindrical shape and a conical portion 312 having a conical shape. The convex portion 31 is formed integrally with the air conditioning casing 11.

The cylinder upper part 311 has the same shape as the cylinder upper part 241 of the motor main body 24a, and the conical part 312 has the same shape as the conical part 242 of the motor main body 24a. A part of the conical portion 312 of the convex portion 31 is disposed so as to be difficult to enter inside the fan 22 of the fan device 20.

The blown air blown out from the scroll casing 25 is led to an air outlet (not shown) through an air passage 40 provided on the air flow downstream side of the fan device 20 inside the air conditioning casing 11. The air outlet includes a face air outlet, a foot air outlet, and a defroster air outlet.

The face air outlet is an air outlet that blows out the air flow flowing through the air passage 40 toward the upper body of the occupant, and the foot air outlet is an air outlet that blows out the air flow flowing through the air passage 40 toward the occupant's feet. The defroster air outlet is an air outlet that blows out the airflow flowing through the air passage 40 toward the inner surface of the vehicle windshield.

The

blowout mode doors

36 and 37 are constituted by rotary doors that are rotatably supported with respect to the air conditioning casing 11. By rotating the blowing

mode doors

36 and 37, the amount of airflow flowing through each outlet is adjusted.

Next, the operation of the indoor air conditioning unit 10 of this embodiment will be described. First, the electric motor 24 drives the fan device 20 to rotate. Then, the fan 21 sucks air from the first suction port 111 of the scroll casing 25 and the fan 22 sucks air from the second suction port 112 of the scroll casing 25.

Then, the air sucked by the fan 21 and the fan 22 is blown out from an air outlet (not shown) through the air passage 40 provided on the downstream side of the air flow from the fan device 20 inside the scroll casing 25.

In the present embodiment, the motor main body 24 a of the electric motor 24 is disposed in the passage 111 a for flowing air to the first suction port 111. More specifically, a part of the motor main body 24a of the electric motor 24 is arranged so as to be hard to enter the inside of the fan 21 of the fan device 20 from the first suction port 111 side. For this reason, the central portion of the first suction port 111 is in a state of being blocked by the motor body 24 a of the electric motor 24. For this reason, the fan 21 has a large suction resistance and is inefficient.

On the other hand, the convex portion 31 is arranged so as to be hard to enter the inside of the fan device 20 from the second suction port 112 side, and the central portion of the second suction port 112 is blocked by the convex portion 31. It has become. For this reason, the fan 22 also has a large suction resistance and is inefficient.

That is, the second suction port 112 is provided with a convex portion 31 that matches the resistance of the air flowing through the second suction port 112 with the resistance of the air flowing through the first suction port 111. Therefore, the operation balance of the upper and

lower fans

21 and 22 can be adjusted by the convex portion 31.

According to the configuration described above, the motor main body 24a is disposed in the passage 112a for flowing air to the first suction port 111, and the passage 112a for flowing air to the second suction port 112 has air flowing into the second suction port 112. Since the resistance member 30 serving as a resistor is disposed, it is possible to achieve both reduction in size and improvement in the operation balance of the blower.

Further, the resistance member 30 has a convex portion 31 that protrudes from the wall surface of the air conditioning casing 11 toward the passage 112 a that reaches the second suction port 112. Thus, the resistance member 30 can also be configured by the convex portion 31 protruding from the wall surface of the air conditioning casing 11 toward the passage 112a.

Moreover, since the convex part 31 has the same shape as the motor main body 24a, the resistance of the air flowing through the second suction port 112 can be matched with the resistance of the air flowing through the first suction port 111, so Noise balance can be improved.

(Second Embodiment)
A vehicle air conditioner according to a second embodiment will be described with reference to FIG. FIG. 3 is a cross-sectional view of the indoor air conditioning unit 10 of the vehicle air conditioner according to the second embodiment as viewed from the left-right direction of the vehicle. In the said 1st Embodiment, the resistance member 30 used as the resistance of the air which flows into the 2nd inlet 112 was comprised by the convex part 31 which protrudes from the wall surface of the air-conditioning casing 11 toward the channel | path 112a. On the other hand, in the present embodiment, the resistance member 30 is configured by the guide 34 that guides the air flowing through the passage 112a leading to the second suction port 112 to the second suction port 112 side.

The guide 34 is formed on the wall surface of the air conditioning casing 11 so as to provide resistance to the air flowing through the second suction port 112. Thus, since the guide 34 becomes resistance of the air which flows into the 2nd inlet 112, the operation balance of the upper and

lower fans

21 and 22 can be improved.

Further, the guide 34 is formed at a location outside the range through which the main flow of the air flowing through the second suction port 112 passes through the passage 112 a reaching the second suction port 112, and flows through the passage 112 a leading to the second suction port 112. Air is guided to the second suction port 112 side.

In the configuration in which the guide 34 is not formed, a vortex is generated in the passage 112a leading to the second suction port 112 at a location outside the range through which the main flow of the air flowing through the second suction port 112 passes, and blowing noise is generated. Becomes larger.

However, in the present embodiment, the guide 34 guides the air flowing through the passage 112a leading to the second suction port 112 to the second suction port 112 side, and deviates from the range through which the main flow of air flowing through the second suction port 112 passes. Since generation | occurrence | production of a vortex is suppressed in a location, ventilation noise can be reduced.

As described above, the resistance member 30 has the guide 34 that guides the air flowing through the passage 112a leading to the second suction port 112 to the second suction port 112 side. As described above, the resistance member 30 can be configured by the guide 34 that guides the air flowing through the passage 112a leading to the second suction port 112 to the second suction port 112 side.

In the present embodiment, the same effect that is obtained from the configuration common to the first embodiment can be obtained as in the first embodiment.

(Third embodiment)
A vehicle air conditioner according to a third embodiment will be described with reference to FIG. FIG. 4 is a cross-sectional view of the indoor air conditioning unit 10 of the vehicle air conditioner according to the present embodiment as viewed from the left-right direction of the vehicle. In the present embodiment, the resistance member 30 is configured by a maze constituting member 32 in which the passage 112a reaching the second suction port 112 has a maze structure.

The maze constituting member 32 is a member having a maze structure in the passage 112a reaching the second suction port 112, and is made of resin. The maze constituting member 32 is formed in the air conditioning casing 11 so as to be a resistance of the air flowing through the second suction port 112. Thus, since the maze component 32 becomes resistance of the air which flows into the 2nd inlet 112, the ventilation noise balance of the upper and

lower fans

21 and 22 can be improved.

The maze constituting member 32 has a bending portion 321 that changes the direction of the air flowing through the passage 112a leading to the second suction port 112. The air flowing through the air passage on the upstream side of the partition wall 18 is redirected to the labyrinth component 32 side by the partition wall 18, and then redirected to the passage 112 a side by the bent portion 321. 2 is sucked into the suction port 112.

As described above, the resistance member 30 includes the member 32 having a labyrinth structure as the passage 112a leading to the second suction port 112. As described above, the resistance member 30 can be configured by the member 32 having the maze structure in the passage 112a leading to the second suction port 112.

(Fourth embodiment)
A vehicle air conditioner according to a fourth embodiment will be described with reference to FIG. FIG. 5 is a cross-sectional view of the indoor air conditioning unit 10 of the vehicle air conditioner according to this embodiment as viewed from the left-right direction of the vehicle. In the present embodiment, the resistance member 30 is configured by the mesh constituent member 33 having a mesh structure disposed in the passage 112 a leading to the second suction port 112.

The mesh constituent member 33 is made of a resin formed in a lattice shape, and is disposed in a passage 112 a that reaches the second suction port 112. The mesh constituent member 33 is formed in the air conditioning casing 11 so as to provide resistance to air flowing through the second suction port 112. Thus, since the mesh component 33 becomes resistance of the air which flows into the 2nd inlet 112, the ventilation noise balance of the upper and

lower fans

21 and 22 can be improved.

As described above, the resistance member 30 includes the mesh constituent member 33 having a mesh structure disposed in the passage 112a leading to the second suction port 112. As described above, the resistance member 30 can be configured by the mesh constituent member 33 having a mesh structure disposed in the passage 112 a leading to the second suction port 112.

(Other embodiments)
(1) In each of the above embodiments, the motor main body 24a is disposed so as to be hard to enter the inside of the fan device 20 from the first suction port 111 side, and the second suction port is provided in the passage 112a through which air flows to the second suction port 112. A resistance member 30 serving as resistance of air flowing to 112 is disposed.

On the other hand, the motor main body 24a is arranged so as to be hard to enter the inside of the fan device 20 from the second suction port 112 side, and the air flowing through the first suction port 111 is passed through the passage 111a that flows air to the first suction port 111. You may arrange | position the resistance member 30 used as resistance. Further, the direction of the air conditioning casing is not limited to the direction described in the above embodiments.

(2) In each of the above embodiments, the air filter 14 → the evaporator 13 → the air mix door 17 → the heater core 15 → the fan device 20 → the blowing

mode doors

36 and 37 → the air outlet, the defroster outlet, and the foot outlet in this order. Configured to flow.

In contrast, the heater core 15 may be arranged on the downstream side of the air flow of the fan device 20. That is, the air may flow in the order of the air filter 14 → the evaporator 13 → the fan device 20 → the air mix door 17 → the heater core 15 → the blowing

mode doors

36 and 37 → the face outlet, the defroster outlet, and the foot outlet. Good. Moreover, it can also be set as the structure which does not provide a filter.

(3) In the first embodiment, a configuration in which the motor main body 24a is arranged so as to be inserted into the inside of the fan 21 of the fan device 20 from the first suction port 111 side is disclosed. On the other hand, the structure which arrange | positions the motor main body 24a in the channel | path 111a which flows air into the 1st suction inlet 111 is also possible.

(4) In each of the above embodiments, the resistance member 30 is configured to protrude from the wall surface of the air conditioning casing 11. In addition, you may make it arrange | position the resistance member 30 comprised with the air-conditioning casing 11 and the separate member in the air-conditioning casing 11. FIG. Moreover, in each said embodiment, although the convex part 31 was comprised using resin, you may comprise the resistance member 30 using members other than resin.

(5) In the first embodiment, the convex portion 31 bites into the fan 22. However, the height in the vertical direction of the convex portion 31 may be lower than that in the first embodiment within a range where the operation balance of the upper and

lower fans

21 and 22 is matched. Further, the shape of the convex portion 31 may be variously changed within a range in which the operation balance of the upper and

lower fans

21 and 22 is matched.

Note that the present disclosure is not limited to the above-described embodiment, and can be changed as appropriate. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case. In each of the above embodiments, when referring to the material, shape, positional relationship, etc. of the constituent elements, etc., unless otherwise specified, or in principle limited to a specific material, shape, positional relationship, etc. The material, shape, positional relationship, etc. are not limited.

(Summary)
According to the 1st viewpoint shown by one part or all part of said each embodiment, a motor main body is arrange | positioned in the channel | path which flows air into a 1st suction port, and is either a 1st suction port or a 2nd suction port. In the passage through which air flows to the other suction port, a resistance member serving as a resistance of the air flowing to the other suction port of the first suction port and the second suction port is disposed.

According to a second aspect, the resistance member is a member having a shape protruding from the wall surface of the air conditioning casing facing the other suction port toward the other suction port.

Moreover, according to the 3rd viewpoint, the resistance member has the convex part which protrudes from the wall surface of an air-conditioning casing toward the path | route which reaches any one suction inlet of a 1st suction inlet and a 2nd suction inlet. . Thus, a resistance member can be comprised by the convex part which protrudes from the wall surface of an air-conditioning casing toward the path | route which reaches either one of a 1st suction inlet and a 2nd suction inlet.

Further, according to the fourth aspect, the resistance member has a guide for guiding the air flowing through the passage leading to the other suction port to the other suction port side. Thus, the resistance member can be configured by a guide that guides the air flowing through the passage leading to the other suction port to the other suction port side. In addition, the guide guides the air flowing through the passage leading to the other suction port to the other suction port side, and the generation of vortices is suppressed at a location outside the range through which the main flow of air flowing to the other suction port passes. The blowing noise can also be reduced.

Further, according to the fifth aspect, the resistance member has a member having a maze structure in the passage leading to the other suction port. Thus, a resistance member can be comprised by the member which makes the path | route leading to the other suction inlet the maze structure.

Further, according to the sixth aspect, the resistance member has a mesh structure member arranged in the passage leading to the other suction port. Thus, a resistance member can be comprised with the member of the mesh structure arrange | positioned in the channel | path leading to the other suction inlet.

Claims

A vehicle air conditioner,
An air conditioning casing (11) having an air passage for flowing air;
A cooling heat exchanger (13) disposed in the air conditioning casing for cooling the air flowing through the air passage;
A heating heat exchanger (15) that is disposed in the air conditioning casing and heats the air cooled by the cooling heat exchanger;
A temperature adjusting door (17) for adjusting the air flow rate ratio between the cold air flowing into the heating heat exchanger side and the cold air flowing into the bypass passage (16) that flows around the heating heat exchanger;
In the air conditioning casing, it is arranged to rotate around the axis of the rotary shaft on the downstream side of the air flow of the air from the cooling heat exchanger, and is formed on one end side in the axial direction of the rotary shaft in the air conditioning casing. The first fan (21) that sucks in the air from the first suction port (111) side and the air from the second suction port (112) side formed on the other axial end side of the rotating shaft in the air conditioning casing. A fan device (20) having a second fan (22) for sucking;
A motor main body (24a) disposed in a passage (111a) through which the air flows through one of the first suction port and the second suction port and rotationally driving the fan device about the axis of the rotation shaft When,
The first suction port and the second suction port are arranged in a passage (112a) through which the air flows to the other suction port, and the first suction port and the second suction port are connected to the other suction port. A vehicle air conditioner comprising: a resistance member (30) serving as resistance of the flowing air.
The vehicle air conditioner according to claim 1, wherein the resistance member is a member having a shape protruding from a wall surface of the air conditioning casing facing the other suction port toward the other suction port.
The vehicle air conditioner according to claim 2, wherein the resistance member has a convex portion (31) protruding from a wall surface of the air conditioning casing toward a passage leading to the other suction port.
The vehicle air conditioner according to claim 2, wherein the resistance member includes a guide (34) for guiding the air flowing through the passage leading to the other suction port toward the other suction port.
The vehicle air conditioner according to claim 1, wherein the resistance member includes a member (32) having a maze structure as a passage leading to the other suction port.
The vehicle air conditioner according to claim 1, wherein the resistance member has a mesh structure member (33) disposed in a passage leading to the other suction port.