JP6456456B1 - Air conditioner for vehicles - Google Patents

Abstract

An air conditioner for a vehicle capable of realizing high heat recovery efficiency by flowing the inside air uniformly to a heat recovery device for exchanging heat between the inside air discharged outside the vehicle interior and the outside air introduced into the vehicle interior. Get the device. An air conditioner unit (10) includes a first wall (16) and a second fan (17) arranged coaxially with a vehicle wall (81) in which an outside air introduction port (61) and a vehicle exterior air outlet (65) are formed, and a partition plate (19). The sirocco fan 15 for blowing the inside air or the outside air respectively, the vehicle interior outlets 63 and 64 for blowing the inside air or the outside air into the vehicle interior, the heat recovery device 11 for exchanging heat between the inside air and the outside air, and the outside air introduction port 71 A first partition valve 71 that opens and closes the vehicle, and a second partition that opens and closes the passenger compartment outside air outlet 65 and separates the flow of outside air flowing in from the outside air inlet 61 and the flow of inside air flowing out of the outside air outlet 65 of the vehicle interior. The heat recovery device 11 is disposed on the upstream side of the sirocco fan 15. [Selection] Figure 1

Description

  The present invention relates to a vehicle air conditioner that is mounted on a hybrid vehicle such as a plug-in hybrid vehicle or an electric vehicle such as an electric vehicle and performs air conditioning in a vehicle interior.

  Since hybrid vehicles and electric vehicles use electric power to drive the vehicle, the power consumption of the vehicle decreases if the power consumption by air conditioning is large. Further, heat loss caused by ventilation accompanying air conditioning is large and greatly affects power consumption of the air conditioning. Therefore, it is necessary to reduce heat loss due to ventilation as much as possible. In the conventional vehicle air conditioner, a heat recovery device is provided between the inside air blowing means and the outside air blowing means, the inside air discharge port, and the outside air introduction port, and between the inside air discharged outside the vehicle and the outside air introduced into the vehicle. The heat loss is reduced by heat exchange (for example, refer to Patent Document 1).

Japanese Patent Laying-Open No. 2012-1036 (FIG. 1)

  In a vehicle air conditioner, it is desirable to use a centrifugal blower such as a sirocco fan having a high maximum static pressure and excellent quietness. On the other hand, since the centrifugal blower has a feature that the radial wind speed distribution is large in the blowout portion, the heat recovery device is provided downstream of the inside air blowing means in the air passage that exhausts the inside air as in the vehicle air conditioner of Patent Document 1. If this is provided, there is a problem in that the inside air does not flow uniformly in the heat recovery device and the heat recovery efficiency may be reduced.

  The present invention has been made to solve the above-described problems, and is designed to reduce the inside air with respect to a heat recovery device that exchanges heat between the inside air discharged outside the vehicle interior and the outside air introduced into the vehicle interior. A vehicle air conditioner capable of flowing uniformly and realizing high heat recovery efficiency is obtained.

  An air conditioner for a vehicle according to the present invention includes an outer wall formed with an outside air introduction port for introducing outside air, which is air outside the vehicle compartment, an inside air discharge port for discharging inside air, which is air inside the vehicle compartment, to the outside of the vehicle compartment, and a partition plate. A centrifugal fan that has a first fan and a second fan that are coaxially arranged, and blows the inside air or outside air by the first fan and the second fan, respectively, and the inside air blown by the centrifugal fan Alternatively, the interior air outlet that blows outside air into the vehicle interior, and a plurality of interval plates that are stacked while alternately forming the air passage for the inside air and the air passage for the outside air, and the inside air that flows through the air passage for the inside air, A first heat exchanger for exchanging heat with the outside air flowing through the air passage for outside air, and a second heat having a pipe through which the refrigerant circulates and exchanging heat between the inside air or outside air and the refrigerant An exchanger, a first gate valve for opening and closing the outside air inlet, and an outside A second opening that opens and closes the inside air discharge port and that separates the flow of outside air flowing in from the outside air introduction port and the flow of inside air flowing out of the inside air discharge port while being supported rotatably between the introduction port and the inside air discharge port. A gate valve extending from the outside air introduction port to the first heat exchanger, and forming an outside air introduction path between the second gate valve and the outside air introduced from the outside air introduction port to the first heat exchanger. A first air passage constituent member and a second air passage constituent member that forms an inside air introduction passage for guiding the inside air flowing in from the inside air introduction port for introducing the inside air from the vehicle interior between the outer wall and the first air passage constituting member. The heat exchanger is disposed on the upstream side of the centrifugal blower.

  According to the present invention, it is possible to flow the inside air uniformly to the heat recovery device that exchanges heat between the inside air discharged outside the vehicle interior and the outside air introduced into the vehicle interior, thereby realizing high heat recovery efficiency. .

It is a schematic block diagram which shows the 1st air path form of the vehicle air conditioner in Embodiment 1 of this invention. It is a schematic block diagram which shows the heat pump system which concerns on Embodiment 1 of this invention. It is a schematic block diagram which shows the 2nd wind path form of the vehicle air conditioner in Embodiment 1 of this invention. It is a schematic block diagram which shows the 3rd wind path form of the vehicle air conditioner in Embodiment 1 of this invention. It is a schematic block diagram which shows the 4th air path form of the vehicle air conditioner in Embodiment 1 of this invention. It is a schematic block diagram which shows the heat recovery device which concerns on Embodiment 2 of this invention.

Embodiment 1 FIG.
<Overall configuration>
Embodiment 1 of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic configuration diagram showing a first air path configuration of the vehicle air conditioner in the first embodiment. In the following description, air outside the passenger compartment is referred to as “outside air”, air inside the passenger compartment is referred to as “inside air”, and simply “air” refers to inside air or outside air. The air conditioner unit 10, that is, the vehicle air conditioner, is mounted, for example, in the front portion of the vehicle, below the windshield, and performs air conditioning of the vehicle interior using a heat pump system. The air conditioner unit 10 has an outer peripheral portion constituted by a vehicle wall 81, that is, an outer wall. In the upper part of the vehicle wall 81, an outside air introduction port 61 that introduces outside air, which is air outside the passenger compartment, into the air conditioner unit 10 A vehicle exterior air outlet 65 that discharges indoor air, which is indoor air, that is, an indoor air outlet is formed between the windshield 82 and the vehicle. Further, at the side of the vehicle wall 81 on the vehicle interior side, an inside air introduction port 62 for introducing the inside air into the air conditioner unit 10, a first vehicle interior outlet 63 for introducing the air inside the air conditioner unit 10 into the vehicle interior, and a Two vehicle interior outlets 64 are provided. The first vehicle interior air outlet 63 faces the windshield 82, and the air blown from the first vehicle interior air outlet 63 is directly blown onto the windshield 82.

  The air conditioner unit 10 includes a heat recovery unit 11 for exchanging heat between the inside air and the outside air, that is, a first heat exchanger and a metal pipe through which the refrigerant flows, and absorbs heat due to evaporation of the refrigerant. There are provided a refrigerant evaporator 12 that cools the air in the air conditioner unit 10, a refrigerant condenser 13 that heats and raises the temperature of the air in the air conditioner unit 10 by heat radiation accompanying the condensation of the refrigerant, and a sirocco fan 15, that is, a centrifugal fan. ing. The refrigerant evaporator 12 and the refrigerant condenser 13 exchange heat between the inside air or outside air and the refrigerant, and correspond to a second heat exchanger.

  FIG. 2 is a schematic configuration diagram illustrating the heat pump system according to the first embodiment. In FIG. 1, the air conditioner unit 10 other than the refrigerant evaporator 12 and the refrigerant condenser 13 is not shown. A heat pump system of an air conditioning system mounted on a hybrid vehicle or an electric vehicle like the air conditioner unit 10 includes a compressor 92 that compresses the refrigerant, a refrigerant evaporator 12 and a refrigerant condenser 13 that are mounted on the air conditioner unit 10, and expands the refrigerant. Expansion valves 94a and 95a to be operated, throttle valves 94 and 96 having electromagnetic valves 94b and 95b for controlling the flow of the refrigerant, respectively, and an outside heat exchanger 93 mounted outside the vehicle are provided in a circuit. A four-way valve 91 is provided on the high-pressure discharge side of the compressor 92, that is, between the refrigerant evaporator 12 and the refrigerant condenser 13 and the compressor 92. Further, check valves 96 and 97 are provided between the four-way valve 91 and the external heat exchanger 93 and between the refrigerant condenser 13 and the external heat exchanger 93, respectively.

  In the heat pump system shown in FIG. 2, the refrigerant flowing in the piping circulates while repeating condensation and evaporation, thereby performing cooling for transporting heat from the vehicle interior to the outside of the vehicle and heating for transporting heat from outside the vehicle interior to the vehicle interior. More specifically, during cooling, the refrigerant is supplied from the compressor 92 to the external heat exchanger 93 via the four-way valve 91, and the refrigerant radiated by the external heat exchanger 93 is decompressed by the throttle valve 94. Then, the air is cooled by evaporating with the refrigerant evaporator 12 and absorbing heat from the air in the air conditioner unit 10. During heating, the refrigerant is supplied from the compressor 92 to the refrigerant condenser 13 via the four-way valve 91 whose path has been switched from the time of cooling, and the air is heated to raise the temperature by causing the refrigerant condenser 13 to dissipate heat. During heating, the outside heat exchanger 93 operates as an evaporator. Further, at the time of dehumidification, the temperature is raised by heating after cooling and dehumidifying the air by flowing the refrigerant in the order of the refrigerant condenser 13, the throttle valve 95, the outside heat exchanger 93, the throttle valve 94, and the refrigerant evaporator 12.

  One or both of the first vehicle interior outlet 63 and the second vehicle interior outlet 64 is provided with a temperature sensor (not shown) for monitoring the temperature in the vehicle interior during the cooling described above. ing. The installation location of the temperature sensor is not limited to the first vehicle interior air outlet 63 or the second vehicle interior air outlet 64, but in order to suppress the difference between the monitored value of the temperature sensor and the actual vehicle interior temperature, It is desirable to provide a temperature sensor as close to the first vehicle interior outlet 63 or the second vehicle interior outlet 64 as possible.

  The heat recovery unit 11 is formed by stacking a plurality of square interval plates made of paper material, resin, etc., with the direction perpendicular to the paper surface in the drawing as the stacking direction, and a predetermined interval between adjacent interval plates. A holding spacer (not shown) is provided, and a plurality of air passages through which air flows in a direction perpendicular to the stacking direction of the spacing plates are formed. Further, the heat recovery device 11 is provided with an outside air port portion 11b and an exhaust port portion 11d on the side facing the outside air introduction port 61 and the vehicle exterior air outlet 65, and is supplied to the opposite side of the outside air port portion 11b and the exhaust port portion 11d. An air port 11c and a return air port 11a are provided. The outside air port portion 11 b allows outside air to flow into the heat recovery device 11, and the air supply port portion 11 c causes the outside air flowing into the heat recovery device 11 from the outside air port portion 11 b to flow out of the heat recovery device 11. The return air port portion 11 a causes the inside air to flow into the heat recovery device 11, and the exhaust port portion 11 d causes the inside air that has flowed into the heat recovery device 11 from the return air port portion 11 a to flow out of the heat recovery device 11.

The air path in the heat recovery unit 11 is a stack of interval plates, which is an outside air path leading from the outside air port portion 11b to the air supply port portion 11c and an inside air air channel leading from the return air port portion 11a to the exhaust port portion 11d. The inside air passage and the outside air passage adjacent to each other are formed along the direction so that the inside air and the outside air flow through each other while exchanging heat through the interval plate. The inside air and the outside air are not mixed in the heat recovery unit 11. In addition, as a material of a space | interval board and a spacer, you may use the adsorption | suction deodorizing material which adsorb | sucks an odor component, the dust collection material which collects dust, or the material containing these combination. In this case, the air quality of the inside air and the outside air can be improved by circulating the inside air and the outside air inside the heat recovery unit 11.
In the heat recovery device 11 of the first embodiment, the length of the air path connecting the outside air port portion 11b and the air supply port portion 11c, and the length of the air path connecting the return air port portion 11a and the exhaust port portion 11d is the direction. Are orthogonal. That is, in the heat recovery device 11, the direction of the air path for the inside air and the direction of the air path for the outside air are orthogonal. Further, since the interval plate constituting the heat recovery unit 11 is square, the length of the air passage for the inside air is equal to the length of the air passage for the outside air.

The sirocco fan 15 is housed in a case provided with a rotating machine 18 provided with a rotating shaft extending upward in the drawing and a duct (not shown) having a blowing portion on the right side in the drawing, and is coaxially arranged and centered. Are respectively provided with a first fan 16 and a second fan 17 that are passed through the rotation shaft of the rotating machine 18, and a partition plate 19 disposed between the first fan 16 and the second fan 17. The first fan 16 is disposed above the partition plate 19 in the drawing, that is, on the outside air introduction port 61 side with respect to the partition plate 19, and the second fan 17 is disposed on the side opposite to the outside air introduction port 61. ing. The first fan 16 and the second fan 17 are driven to rotate by a rotating machine 18 to take in upper and lower air, respectively, and flow the taken air in the radial direction. The air flowed in the radial direction by the first fan 16 and the second fan 17 is guided by the duct described above, blown out in the right direction in the drawing, and blown. The air blown out of the duct is biased in the wind speed with respect to the radial direction of the first fan 16 and the second fan 17, and the wind speed increases toward the side farther from the rotation axis. On the other hand, the flow of air taken into the first fan 16 and the second fan 17 is not biased, and the air flow is uniform on the upstream side of the sirocco fan.
The diameters of the first fan 16 and the second fan 17 may be set according to the flow resistance of the outside air and the inside air, and are not particularly limited.

  In the air conditioner unit 10, air flows through the first air passage wall 41 to the fifth air passage wall 45 and the first gate valve 71 to the fourth gate valve 74, which are each formed of a resin molded product. A plurality of air paths are formed. A plurality of these air passages are provided by opening and closing operations of the first gate valve 71 to the fourth gate valve 74, each of which has a rotary shaft at one end and is driven to rotate around the rotary shaft by a driving device such as an actuator. Can be switched to

  The first air passage wall 41, that is, the first air passage constituent member extends from the outside air inlet 61 in the direction of the heat recovery unit 11, and one end thereof is exhausted from the outside air port 11 b of the heat recovery unit 11. It is connected to the contact portion of the mouth portion 11d. A rotating shaft of the first gate valve 71 is provided at the other end of the first air passage wall 41, that is, the end on the outside air inlet 61 side, and supports the first gate valve 71 so as to be rotatable. ing.

  The second air passage wall 42, that is, the second air passage constituent member extends in the direction from the heat recovery device 11 to the second vehicle interior air outlet 64, and the inside air inlet 62 and the inside air inlet for introducing the inside air. An inside air introduction path 52 that guides inside air flowing in from 62 is formed between the bottom of the vehicle wall 81. A rotating shaft of the third gate valve 73 is provided at one end of the second air passage wall 42, that is, the end opposite to the inside air introduction port 62, and the third gate valve 73 is connected to the second air passage wall 42. It is pivotally supported. The third gate valve 73 switches the open / close state between the heat recovery device 11 and the second air passage wall 42. When the space between the heat recovery device 11 and the second air passage wall 42 is open, the flow of the internal air flowing through the internal air introduction passage 52 is divided into two, and the return air port 11a of the heat recovery device 11 and the second air flow passage respectively. It flows toward the second fan 17. When the space between the heat recovery device 11 and the second air passage wall 42 is partitioned by the third gate valve 73, all the internal air flowing through the internal air introduction passage 52 is directed toward the return air port 11a of the heat recovery device 11. Flowing.

  Between the partition plate 19 of the sirocco fan 15 and the second air passage wall 42, an air passage that guides the air flowing out from the air supply port 11 c of the heat recovery device 11 to the refrigerant evaporator 12 by the second fan 17. 53 is formed. That is, in the air blowing path 53, the heat recovery unit 11 is on the upstream side of the sirocco fan 15, and the refrigerant evaporator 12 is on the downstream side of the sirocco fan 15.

  The fourth air passage wall 44 extends from the refrigerant condenser 13 in the direction of the boundary between the first vehicle interior outlet 63 and the vehicle exterior outlet 65, and has one end connected to the refrigerant condenser 13. The other end is connected to the lower end of the windshield 82.

  The third air passage wall 43 extends from the refrigerant condenser 13 in the direction of the first vehicle interior outlet 63, and has one end connected to the refrigerant condenser 13 and the other end windshield 82. It is connected to the.

  The fifth air passage wall 45 has one end connected to the refrigerant evaporator 12 and the other end connected to the refrigerant condenser 13.

  A rotating shaft of the second gate valve 72 is provided between the outside air inlet 61 and the vehicle exterior air outlet 65, and the second gate valve 72 is rotatably supported. The second gate valve 72 switches the open / close state of the vehicle exterior air outlet 65.

  The partition plate 19 of the sirocco fan 15 has an upstream end of the sirocco fan 15 connected to a contact point between the exhaust port 11d and the air supply port 11c of the heat recovery unit 11. A rotary shaft of the fourth gate valve 74 is provided at the downstream end, and the fourth gate valve 74 is rotatably supported. The fourth gate valve 74 partitions the air blown by the first fan 16 and the air blown by the second fan 17 on the downstream side. In addition, the fourth gate valve 74 is rotationally driven to switch the flow of air blown by the first fan 16.

Between the fourth air passage wall 44 and the fifth air passage wall 45, and between the fourth air passage wall 44 and the third air passage wall 43, the air is passed through the refrigerant condenser 13 for the first time. A first vehicle interior air supply passage 55 that leads to the vehicle interior air outlet 63 is formed. Further, air is passed through the refrigerant condenser 13 between the second air passage wall 42 and the fifth air passage wall 45 and between the second air passage wall 42 and the third air passage wall 43. A second vehicle interior air supply path 56 that leads to the second vehicle interior air outlet 64 is formed.
The above is common for each air path configuration described below.

  Next, each air path form is demonstrated.

<First air path configuration>
FIG. 1 shows a first air path configuration, in which black arrows represent the flow of inside air and white arrows represent the flow of outside air. In the first air path configuration, heat is recovered from the inside air exhausted outside the vehicle interior by exchanging heat between the outside air taken into the vehicle interior and the inside air exhausted outside the vehicle interior during ventilation. The outside air inlet 61 is opened by separating the tip of the gate valve 71 (the end opposite to the side where the rotation shaft is provided, the same for other gate valves) from the second gate valve 72. Thus, outside air can be introduced into the air conditioner unit 10. Further, the front end portion of the second gate valve 72 is separated from the fourth air passage wall 44 and is brought into contact with the heat recovery unit 11 to open the outside air outlet 65 and to remove the inside air in the air conditioner unit 10 from the vehicle. The air can be discharged to the outside, and the flow of outside air flowing in from the outside air introduction port 61 and the flow of inside air discharged from the vehicle interior outside air outlet 65 are partitioned by the second gate valve 72. Further, the tip of the third gate valve 73 is brought into contact with the heat recovery device 11 to partition the inside air introduction path 52 and the air blowing path 53. Further, the tip of the fourth gate valve 74 is brought into contact with the fourth air passage wall 44.

  By setting the first gate valve 71 to the fourth gate valve 74 as described above, the outside air introduction path 51 that guides the outside air flowing from the outside air introduction port 61 to the outside air port portion 11b of the heat recovery device 11 is the second. The inside air discharge path 541 is formed between the gate valve 72 and the first air passage wall 41 and guides the inside air flowing out from the exhaust port 11d of the heat recovery device 11 to the outside air outlet 65 through the first fan 16. Is formed between the second gate valve 72 and the fourth air passage wall 44.

  In the first air path configuration, outside air that has flowed into the air conditioner unit 10 from the outside air introduction port 61 flows into the heat recovery device 11 from the outside air port portion 11 b through the outside air introduction passage 51. The outside air that has flowed into the heat recovery device 11 flows through the heat recovery device 11 toward the air supply port portion 11c while exchanging heat with the internal air, flows out of the air supply port portion 11c, and then is taken into the second fan 17. . The outside air taken into the second fan 17 flows in the right direction in the figure by the second fan 17 and passes through the refrigerant evaporator 12 as it is. A portion of the outside air that has passed through the refrigerant evaporator 12 passes through the refrigerant condenser 13 through the first vehicle interior air supply passage 55 and flows into the vehicle interior from the first vehicle interior outlet 63. The remaining outside air passes through the refrigerant condenser 13 through the second vehicle interior air supply path 56 and flows into the vehicle interior from the second vehicle interior outlet 64.

  The inside air that has flowed into the air conditioner unit 10 from the inside air introduction port 62 flows into the heat recovery device 11 from the return air port portion 11a through the inside air introduction path 52, and flows through the heat recovery device 11 while exchanging heat with the outside air. Then, after flowing out from the exhaust port 11d, the air is taken into the first fan 16. The inside air taken in by the first fan 16 flows through the inside air discharge passage 541 by the first fan 16 and is discharged from the passenger compartment outside outlet 65 to the outside of the passenger compartment.

  In the first air path configuration, the inside air and the outside air intersect in the heat recovery unit 11, but the inside air path and the outside air path in the heat recovery unit 11 are partitioned by the spacing plate as described above. Therefore, the inside air and the outside air are not mixed in the heat recovery unit 11. Also, outside the heat recovery unit 11, since the flow of the internal air and the flow of the external air are partitioned by the second gate valve 72, the partition plate 19, and the fourth gate valve 74, the internal air and the external air are mixed. There is nothing.

<Second air path configuration>
FIG. 3 shows a second air path configuration. The second air path configuration detects nitrogen oxides (NOx), sulfur oxides (SOx), unpleasant odors, dust, etc. by an air dirt detection sensor (not shown) provided outside the outside air inlet 61. In this case, the inside air is circulated while maintaining the comfort in the passenger compartment while preventing the contamination by the outside air from flowing into the passenger compartment, and the tip of the first gate valve 71 is connected to the second gate valve 72. The outside air inlet 61 is closed by making contact with the rotation shaft, and the front end portion of the second gate valve 72 is brought into contact with the fourth air passage wall 44 to close the vehicle interior outside outlet 65. Further, the tip of the third gate valve 73 is separated from the heat recovery device 11 to open the space between the heat recovery device 11 and the second air passage wall 42. Further, the tip of the fourth gate valve 74 is brought into contact with the refrigerant evaporator 12.

  By setting the first gate valve 71 to the fourth gate valve 74 as described above, the partition plate 19 and the fourth gate valve 74, the second gate valve 72 and the fourth air passage wall 44, In between, an air passage 542 is formed that guides the inside air flowing out from the air supply port 11 c of the heat recovery unit 11 to the refrigerant evaporator 12 through the first fan 16. Further, air can flow between the inside air introduction path 52 and the air blowing path 53. The air supply path 542 and the air supply path 53 are connected to the first vehicle interior air supply path 55 and the second vehicle interior air supply path 56, respectively. The air passage 542 and the air passage 53 are partitioned by the partition plate 19 and the fourth gate valve 74.

  In the second air path configuration, the inside air that has flowed into the air conditioner unit 10 from the inside air introduction port 62 is divided into two after passing through the inside air introduction passage 52, and a part of the inside air is returned from the return air port portion 11a to the heat recovery device 11. And the remainder flows into the air passage 53. The inside air that has flowed into the heat recovery unit 11 flows out of the exhaust port 11d and is taken into the first fan 16, and flows through the air passage 542 in the right direction in the drawing by the first fan 16 and passes through the refrigerant evaporator 12. pass. The inside air that has passed through the refrigerant evaporator 12 passes through the first vehicle interior air supply passage 55, passes through the refrigerant condenser 13, and flows into the vehicle interior from the first vehicle interior outlet 63. The inside air that has flowed into the air passage 53 from the inside air introduction passage 52 flows through the air passage 53 and is taken into the second fan 17, and flows through the air passage 53 in the right direction in the drawing by the second fan 17 and flows into the refrigerant evaporator 12. Pass through. The inside air that has passed through the refrigerant evaporator 12 passes through the second vehicle interior air supply passage 56, passes through the refrigerant condenser 13, and flows into the vehicle interior from the second vehicle interior outlet 64. As described above, in the second air path configuration, the inside air is circulated between the air conditioner unit 10 and the passenger compartment while blocking the outside air. In addition, the circulation amount of the inside air in the second air path configuration can be adjusted by the opening degree of the third gate valve 73 (the distance between the tip of the third gate valve 73 and the heat recovery device 11). .

<Third wind form>
FIG. 4 shows a third air path configuration. The third air path configuration is for an anti-fogging defrost operation that removes fogging of the windshield 82, and by separating the tip of the first gate valve 71 from the rotating shaft of the second gate valve 72. The outside air inlet 61 is opened to allow outside air to be introduced into the air conditioner unit 10, while the front end of the second gate valve 72 is brought into contact with the fourth air passage wall 44 to open the outside air outlet 65. close up. Further, the tip of the third gate valve 73 is separated from the heat recovery device 11 to open the space between the heat recovery device 11 and the second air passage wall 42. Further, the tip of the fourth gate valve 74 is brought into contact with the refrigerant evaporator 12.

  By setting the first gate valve 71 to the fourth gate valve 74 as described above, the partition plate 19 and the fourth gate valve 74, the second gate valve 72 and the fourth air passage wall 44, In between, the ventilation path 543 which leads the external air which flowed in from the external air inlet 61 to the refrigerant | coolant evaporator 12 is formed. Further, air can flow between the inside air introduction path 52 and the air blowing path 53. The air supply path 543 and the air supply path 53 are connected to the first vehicle interior air supply path 55 and the second vehicle interior air supply path 56, respectively. The air passage 543 and the air passage 53 are partitioned by the partition plate 19 and the fourth gate valve 74.

  In the third air path configuration, the outside air that has flowed into the air conditioner unit 10 from the outside air inlet 61 is taken into the first fan 16, and flows through the air passage 543 to the right side in the drawing by the first fan 16 to generate refrigerant. Pass through the evaporator 12. The outside air that has passed through the refrigerant evaporator 12 passes through the first vehicle interior air supply passage 55, passes through the refrigerant condenser 13, and flows into the vehicle interior from the first vehicle interior outlet 63.

  The outside air flowing into the vehicle interior from the first vehicle interior outlet 63 is cooled and dehumidified when passing through the refrigerant evaporator 12, and heated and heated when passing through the refrigerant condenser 13. For this reason, air having a low humidity and a temperature equal to or higher than the temperature outside the vehicle is directly blown to the vehicle interior side of the windshield 82, and fogging of the windshield 82 is removed. It is possible to dehumidify the outside air and blow it onto the windshield 82 even in the first air path configuration. However, in the third air path configuration, since the outside air is taken into the vehicle interior without passing through the heat recovery device 11, The road resistance is smaller than that of the first air path configuration. For this reason, in the 3rd airway form, more external air can be dehumidified and sent to a vehicle interior, and an anti-fogging effect is large.

  The inside air that has flowed into the air conditioner unit 10 from the inside air introduction port 62 passes through the inside air introduction path 52 and then flows into the air blowing path 53. The inside air that has flowed into the air passage 53 flows through the air passage 53 and is taken into the second fan 17, flows through the air passage 53 by the second fan 17, and passes through the refrigerant evaporator 12. The inside air that has passed through the refrigerant evaporator 12 passes through the second vehicle interior air supply passage 56, passes through the refrigerant condenser 13, and flows into the vehicle interior from the second vehicle interior outlet 64. As described above, in the third air path configuration, the air conditioning in the passenger compartment is performed by circulating the inside air.

  In the third air path configuration, the air path of the outside air and the air path of the inside air in the air conditioner unit 10 are blocked by the partition plate 19 and the fourth gate valve 74. Further, heat exchange is not performed between the inside air and the outside air, and no heat loss occurs, so that air conditioning can be performed with energy saving. Note that the amount of the inside air in the third air path configuration can be adjusted by the opening of the third gate valve 73 as in the second air channel configuration.

<Fourth wind form>
FIG. 5 shows a fourth air path configuration. The fourth air path configuration is for defrosting the icing generated in the heat recovery device 11 in an environment where the temperature of the outside air is 0 ° C. or less. The outside air inlet 61 is closed by abutting against the rotating shaft of the second gate valve 72, and the vehicle exterior air outlet 65 is closed by bringing the tip of the second gate valve 72 into contact with the fourth air passage wall 44. . Further, the tip of the third gate valve 73 is brought into contact with the heat recovery device 11 to partition the inside air introduction path 52 and the air blowing path 53. Further, the tip of the fourth gate valve 74 is brought into contact with the refrigerant evaporator 12.

  By setting the first gate valve 71 to the fourth gate valve 74 as described above, the partition plate 19 and the fourth gate valve 74, the second gate valve 72 and the fourth air passage wall 44, In the meantime, an air passage 544 that guides the inside air flowing out from the air supply port 11 c of the heat recovery device 11 to the refrigerant evaporator 12 through the first fan 16 is formed. Further, the air passage 544 and the air passage 53 are connected to the first vehicle interior air supply passage 55 and the second vehicle interior air supply passage 56, respectively. The air passage 542 and the air passage 53 are partitioned by the partition plate 19 and the fourth gate valve 74.

  In the fourth air path configuration, the inside air that has flowed into the air conditioner unit 10 from the inside air introduction port 62 passes through the inside air introduction passage 52 and then flows into the heat recovery device 11 from the return air port portion 11a. The inside air that has flowed into the heat recovery unit 11 flows out of the exhaust port 11d and is taken into the first fan 16, and flows through the air passage 542 in the right direction in the drawing by the first fan 16 and passes through the refrigerant evaporator 12. pass. The inside air that has passed through the refrigerant evaporator 12 passes through the first vehicle interior air supply passage 55, passes through the refrigerant condenser 13, and flows into the vehicle interior from the first vehicle interior outlet 63. As described above, in the fourth air path configuration, the inside air is circulated between the air conditioner unit 10 and the passenger compartment while blocking the outside air as in the second air path configuration, but all the inside air to be circulated is transferred to the heat recovery unit 11. The point which lets it pass differs from the 2nd wind form.

  The inside air circulated as described above circulates while being heated and heated by the refrigerant condenser 13, and the heated and heated inside air is circulated through the heat recovery device 11, so that the ice in the heat recovery device 11 is defrosted. The The icing of the heat recovery unit 11 may be detected by providing icing detection means in the heat recovery unit 11 or by measuring the wind speed by providing a wind speed sensor at the outside air outlet 65 or the refrigerant condenser 13. It is good also as a structure which judges that icing has generate | occur | produced in the heat recovery device 11, when is below a predetermined wind speed.

  According to the first embodiment, the heat recovery device for exchanging heat between the inside air exhausted outside the vehicle interior and the outside air introduced into the vehicle interior is arranged on the upstream side of the sirocco fan. High heat recovery efficiency can be realized by flowing the inside air uniformly.

  In addition, a plurality of gate valves that are rotatably supported at the end of the air passage wall that forms the air passage in the air conditioner unit and that are driven to rotate by a drive device such as an actuator are provided. A first air passage form that ventilates while exchanging heat between the inside air and the outside air that is introduced into the vehicle interior, a second air passage form that circulates the inside air while blocking outside air, and outside air. A third air passage form for performing anti-fogging defrost operation to remove the fog on the windshield and a fourth air passage for defrosting the ice formed in the heat recovery device by circulating the inside air while heating and raising the temperature. The form can be easily switched.

  In addition, since the third gate valve that opens and closes between the heat recovery unit and the second air passage wall is rotatably provided at the end of the second air passage wall opposite to the inside air inlet, It is possible to easily adjust the circulation amount of the inside air in the second air path form and the third air path form.

  In addition, since the fourth gate valve for switching the flow of the inside air or the outside air blown by the first fan of the sirocco fan is provided at the downstream end of the partition plate that partitions the two fans of the sirocco fan, In the first air path configuration, the outside air blown from the first fan can be smoothly guided to the outside air outlet, and in the second air path configuration to the fourth air path configuration, the air is blown from the first fan. The inside air or outside air can be smoothly guided to the first vehicle outlet.

  Moreover, since the vehicle interior air outlet is opposed to the windshield and the dehumidified air is blown directly onto the windshield, the anti-fogging effect in the anti-fogging defrost operation can be further enhanced.

  Moreover, since the length of the air path for inside air and the air path for outside air are made equal in the heat recovery device, the heat recovery efficiency can be further increased.

  In the first embodiment, the rotary shafts of the gate valves are provided at one end of each, but the position where the rotary shafts are provided is not limited to this.

Embodiment 2. FIG.
The second embodiment of the present invention will be described below with reference to FIG. The second embodiment is different from the first embodiment in the flow of outside air and inside air in the heat recovery unit. FIG. 6 is a schematic configuration diagram illustrating a heat recovery device according to the second embodiment. The same reference numerals are given to the same or corresponding parts as in FIG. 1, and the description thereof is omitted. Although not shown in FIG. 6, the outside air introduction path is located in the upper left direction of the drawing, the air supply path in the vehicle interior is located in the lower right direction of the drawing, the inside air introduction path is located in the lower left direction of the drawing, and the inside air discharge is performed in the upper right direction of the drawing. It is assumed that the heat recovery device 21 is arranged so that the path is located.

  As shown in FIG. 6, the heat recovery device 21 includes a triangular portion 21A, an inverted triangular portion 21C that is upside down from the triangular portion 21A, and a square portion 21B that is disposed between the triangular portion 21A and the inverted triangular portion 21C. . The lengths of one side of the square part 21B, the base of the triangular part 21A, and the base of the inverted triangular part 21C are equal, and the base of the triangular part 21A and the upper side of the square part 21B, The heat recovery device 21 is configured by being connected to each other. The triangular portion 21A, the square portion 21B, and the inverted triangular portion 21C have a plurality of spacing plates made of paper material, resin, etc., as in the heat recovery device 11 of Embodiment 1, with the direction perpendicular to the paper surface in the figure as the stacking direction. A spacer (not shown) is provided between the adjacent spacing plates to maintain a predetermined distance to form an air passage, and there are a plurality of air passages through which air flows in a direction perpendicular to the stacking direction of the spacing plates. Is formed.

  An outside air port portion 21b through which outside air flows is provided on the left oblique side of the triangular portion 21A, and an exhaust port portion 21d through which the inside air in the heat recovery unit 21 flows out is provided on the right oblique side. A return air port 21a through which the inside air flows is provided on the left oblique side of the inverted triangular part 21C, and an air supply port 21c through which the outside air in the heat recovery unit 21 flows out is provided on the right oblique side. As in the case of the first embodiment, the air path in the heat recovery unit 21 communicates from the outside air port 21b to the air supply port 21c and from the return air port 21a to the exhaust port 21d. The air path for inside air and the air path for outside air are alternately formed along the stacking direction of the interval plates.

The outside air that has flowed into the triangular portion 21A from the outside air port portion 21b flows in order from the inside of the triangular portion 21A, the square portion 21B, and the inverted triangular portion 21C, and then flows out from the air supply port portion 21c. The inside air that has flowed into the inverted triangular portion 21C from the return air port portion 21a flows through the inverted triangular portion 21C, the square portion 21B, and the triangular portion 21A in order, and then flows out from the exhaust port portion 21d. The inside air and the outside air in the heat recovery device 21 exchange heat between the inside air and the outside air while flowing in directions opposite to each other in the square portion 21B. In the square portion 21B where the inside air and the outside air intersect, the directions of the air passage for the inside air and the air passage for the outside air are parallel, and the inside air and the outside air flow to face each other.
Others are the same as those in the first embodiment, and thus the description thereof is omitted.

  According to the second embodiment, the same effect as in the first embodiment can be obtained.

  It should be noted that within the scope of the present invention, the embodiments can be freely combined, or the embodiments can be appropriately modified or omitted.

DESCRIPTION OF SYMBOLS 10 Air conditioner unit 11, 21 Heat recovery device, 12 Refrigerant evaporator, 13 Refrigerant condenser, 15 Sirocco fan, 16 1st fan, 17 2nd fan, 19 Partition plate, 41 1st air path wall, 42 Second air passage wall, 51 Outside air introduction passage, 52 Inside air introduction passage, 53 Air passage, 541 Inside air discharge passage, 542, 543, 544 Air passage, 55 First vehicle interior air supply passage, 56 Second vehicle interior Air supply path, 61 Outside air introduction port, 62 Inside air introduction port, 63 1st vehicle interior air outlet, 64 2nd vehicle interior air outlet, 65 Vehicle interior air outlet, 71 1st gate valve, 72 2nd partition Valve, 73 third gate valve, 74 fourth gate valve, 81 vehicle wall, 82 windshield

Claims (9)

An outside wall formed with an outside air introduction port for introducing outside air that is air outside the passenger compartment, and an inside air outlet that discharges inside air that is air inside the passenger compartment to the outside of the cabin;
A centrifugal blower that has a first fan and a second fan arranged coaxially via a partition plate, and blows the inside air or outside air by the first fan and the second fan, respectively;
A vehicle interior outlet for blowing out the inside air or the outside air blown by the centrifugal blower into the vehicle interior;
Consists of a plurality of spaced plates stacked while alternately forming an air passage for inside air and an air passage for outside air, and between the inside air flowing through the air passage for inside air and the outside air flowing through the air passage for outside air A first heat exchanger to exchange heat with
A second heat exchanger having a pipe through which refrigerant flows, and exchanging heat between the inside air or outside air and the refrigerant;
A first gate valve for opening and closing the outside air inlet;
Between the outside air introduction port and the inside air discharge port, it is rotatably supported, opens and closes the inside air discharge port, and flows the outside air flowing in from the outside air introduction port and the flow of inside air flowing out from the inside air discharge port. A second gate valve that partitions
A first outside air passage that extends from the outside air introduction port to the first heat exchanger and guides outside air flowing from the outside air introduction port to the first heat exchanger is formed between the second gate valve and the second heat exchanger. 1 airway component;
A second air passage constituting member that forms an inside air introduction path that guides inside air that has flowed from an inside air introduction port that introduces inside air from the vehicle interior, with the outer wall;
The air conditioner for vehicles, wherein the first heat exchanger is arranged on the upstream side of the centrifugal blower.   Opening and closing between the first heat exchanger and the second air passage component member is rotatably supported at an end of the second air passage component member opposite to the inside air inlet. The vehicular air conditioner according to claim 1, further comprising a third gate valve that performs the operation.   The partition plate further includes a fourth partition valve that is rotatably supported at the downstream end of the centrifugal blower and switches the flow of the inside air or the outside air blown by the first fan. The vehicle air conditioner according to claim 1 or 2, characterized in that   The second heat exchanger includes a refrigerant evaporator that cools the inside air or the outside air by heat absorption associated with the evaporation of the refrigerant, a refrigerant condenser that heats and heats the inside air or the outside air by heat dissipation due to the condensation of the refrigerant, or the refrigerant evaporator The vehicle air conditioner according to any one of claims 1 to 3, wherein the vehicle air conditioner is a combination of the refrigerant condenser and the refrigerant condenser.   5. The vehicle air conditioner according to claim 4, wherein the vehicle interior air outlet faces the windshield, and the inside air or the outside air blown out from the vehicle interior air outlet is blown onto the windshield.   The vehicle air conditioner according to any one of claims 1 to 5, wherein directions of the inside air wind path and the outside air wind path are orthogonal to each other.   The vehicle air conditioner according to any one of claims 1 to 5, wherein directions of the inside air wind path and the outside air wind path are parallel to each other.   The vehicle air conditioner according to any one of claims 1 to 7, wherein a length of the air path for the inside air is equal to a length of the air path for the outside air.   The first heat exchanger includes an adsorption / deodorization material that adsorbs odor components, a dust collection material that collects dust, or a combination of the adsorption / deodorization material and the dust collection material. The vehicle air conditioner according to any one of 1 to 8.

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