JP4239698B2 - Air conditioner for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle air conditioner having a vehicle interior ventilation function.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an air conditioner that ventilates a vehicle interior in order to suppress an increase in the temperature of the vehicle interior during parking under hot weather is known (see, for example, Patent Document 1). According to this, while providing the bypass passage which bypasses a ventilation fan and an evaporator, the fan for ventilation is provided in a bypass passage. When ventilation is performed, the ventilation fan is driven to guide the outside air into the bypass passage, and the air is blown from the vent outlet and the inside air inlet.
[0003]
[Patent Document 1]
Japanese Examined Patent Publication No. 7-121650 [0004]
[Problems to be solved by the invention]
By the way, the temperature (such as the top surface of the instrument panel) that is easily affected by solar radiation during parking in hot weather is likely to increase in temperature, resulting in a temperature distribution in the passenger compartment. Therefore, if the outside air is blown from the vent outlet and the inside air intake as in the above-described apparatus without considering this temperature distribution, the temperature rise in the passenger compartment cannot be suppressed efficiently.
[0005]
The present invention provides a vehicle air conditioner that can efficiently suppress a temperature rise in a passenger compartment during parking in hot weather.
[0006]
[Means for Solving the Problems]
The vehicle air conditioner according to the present invention has a blower that blows conditioned air generated in the air conditioning unit into the vehicle interior via the air outlet, and air from a hot location in the vehicle interior that is likely to become hot due to the influence of solar radiation. The ventilation passage that leads to the outside of the passenger compartment by the operation of the vehicle, the determination means that determines whether or not the ventilation operation is necessary when the vehicle is parked, and the air flow in the ventilation passage is prohibited if the determination means determines that the ventilation operation is unnecessary. When the determination means determines that the ventilation operation is necessary, the air flow from the outlet to the vehicle interior is prohibited, and the flow control means for guiding the air from the vehicle interior to the outside of the vehicle compartment through the ventilation passage and the air conditioning unit A differential duct that guides the conditioned air to the defrost outlet, an internal air intake passage that guides the internal air to the upstream side of the blower via the internal air intake, and an external air intake passage that guides the external air to the upstream side of the blower via the external air intake the door For example, the ventilation passage, characterized Rukoto to Yusuke the first ventilation passage for introducing air into the inside air intake passage from the defroster duct, and a second ventilation passage for introducing air into the outside air intake passage from the blower.
[0007]
【The invention's effect】
According to the present invention, there is provided a ventilation passage that guides air from a hot spot in the passenger compartment, which is likely to become hot due to the effects of solar radiation, to the outside of the passenger compartment by operating the blower. Since air flow in the passage is prohibited and ventilation is determined to be necessary, air flow from the outlet to the passenger compartment is prohibited, and air is guided from the passenger compartment to the outside of the passenger compartment via the ventilation passage. The hot air in the passenger compartment is discharged outside the passenger compartment, and the temperature rise in the passenger compartment can be efficiently suppressed.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a vehicle air conditioner according to the present invention will be described with reference to FIGS.
1-6 is a figure which shows schematic structure of the air-conditioning unit 1 of the vehicle air conditioner concerning this Embodiment, and FIG. 9 is a figure which shows the attachment state to the vehicle of this air-conditioning unit 1. As shown in FIG. In FIGS. 1 to 6 and FIG. 9, one operation (air flow) of the present embodiment is indicated by an arrow.
[0009]
As shown in FIG. 9, the air conditioning unit 1 is disposed inside the instrument panel 2 at the front of the vehicle interior. The air intake unit 3 of the air conditioning unit 1 communicates with a space 5 (vehicle interior) in the instrument panel 2, and the external air intake 4 communicates with a cowl portion 6 (outside the vehicle compartment) of the bonnet. A drafter 22 for discharging the air in the passenger compartment to the outside of the passenger compartment is provided at the lower part of the vehicle, specifically, at the rear of the fender on the left side of the vehicle. It is also possible to take outside air from the drafter 22 into the vehicle interior as indicated by an arrow.
[0010]
As shown in FIG. 1, an internal air intake passage 30 having an internal air intake 3 and an external air intake passage 31 having an external air intake 4 are connected to the air introduction portion 7 upstream of the blower fan 11. The inside / outside air switching door 10 is provided. The inside / outside air switching door 10 is pivoted about the pivot shaft 10a, and the air introduction unit 7 communicates with the inside air intake passage 30 or the outside air intake passage 31 according to the opening degree of the inside / outside air switching door 10, and the blower Inside air or outside air is sucked into the air introduction unit 7 by the rotation of the fan 11. The blower fan 11 is rotated by a fan motor 11A.
[0011]
In the air passage 8 downstream of the blower fan 11, an evaporator 12 that cools the air from the air introduction unit 7, a heater core 13 that heats the cooling air that has passed through the evaporator, and the cooling air that has passed through the evaporator are distributed to the heater core 13. An air mix door 14 is disposed. The air mix chamber 15 downstream of the heater core communicates with the differential outlet 19, vent outlet 20, and foot outlet 21 via the differential door 16, vent door 17, and foot door 18, respectively. The doors 16-18 open and close according to the blowing mode, and the conditioned air according to the blowing mode is blown into the vehicle interior. For example, in the differential mode, the differential door 16 is opened, and the air that has passed through the differential door 16 is blown from the differential outlet 19 toward the front window 25 (FIG. 9) via the differential duct 32.
[0012]
As a characteristic configuration of the present embodiment, the air conditioning unit 1 is provided with a first ventilation passage 33 and a second ventilation passage 34. One end of the first ventilation passage 33 communicates with the differential duct 32 through the through hole 32a, and the other end communicates with the inside air intake passage 3 through the through hole 30a. One end of the second ventilation passage 34 communicates with the cooling air passage 9 of the fan motor 11A, and the other end communicates with the outside air intake passage 31 through the through hole 31a. The through holes 30a and 31a are respectively provided on the surface facing the edge 10b (see FIG. 7) of the inside / outside air switching door 10, and the through hole 32a is provided on the surface facing the edge 16b (see FIG. 8) of the differential door 16. It has been. The inside / outside air switching door 10 is integrally provided with an open / close door 41 that opens and closes the through holes 30a and 31a according to the door opening. The differential door 16 rotates in the differential duct 32, and the differential door 16 is integrally provided with an open / close door 42 that opens and closes the through hole 32a according to the door opening degree.
[0013]
As shown in FIG. 7, the open / close door 41 has a fan shape centered on the rotation shaft 10 a, and is connected to the edge portion 10 b (through holes 30 a, 31 a side) of the inside / outside air switching door 10 and to the inside / outside air switching door 10. It is fixed vertically. The open / close door 41 extends to the inside air inlet 3 side and the outside air inlet 4 side from the surface of the inside / outside air switching door 10 (fan portions 41a and 41b), and the fan portion 41b is provided with a fan-shaped through hole 41c. It has been. As shown in FIG. 8, the open / close door 42 has a fan shape centered on the rotation shaft 16a, and is fixed to the edge 16b (through hole 32a side) of the differential door 16 perpendicularly to the differential door 16. Yes. The open / close door 42 extends from the surface of the differential door 16 toward the air mix chamber 15 and the differential duct 19.
[0014]
The inside / outside air switching door 10 can be rotated to an inside air introduction position (FIGS. 2, 4 and 5), an outside air introduction position (FIG. 3), an inside / outside air introduction position (FIG. 6), and a ventilation position (FIG. 1). At the inside air introduction position, the outside air intake passage 31 is closed by the inside / outside air switching door 10, and the through hole 31a is closed by the open / close door (fan portion 41a), so that the inside air intake passage 30 and the through hole 30a are opened. . At the outside air introduction position, the inside / outside air switching door 10 closes the inside air intake passage 30 and the open / close doors (fan portions 41a, 41b) close the through holes 30a, 31a, respectively, thereby opening the outside air intake passage 31. . At the inside / outside air introduction position, the through hole 31a is closed by the open / close door (fan portion 41b), and the inside air intake passage 30, the outside air intake passage 31, and the through hole 30a are opened. In the ventilation position, the outside air intake passage 31 is closed by the inside / outside air switching door 10, and the inside air intake passage 30 and the through holes 30a and 31a are opened.
[0015]
The differential door 16 can be rotated to a closed position (FIGS. 1-3, 6), an open position (FIG. 5), and an intermediate position (FIG. 4). In the closed position, the differential duct 32 is closed by the differential door 16, and the through hole 32a is opened. In the open position, the through hole 32a is closed by the open / close door 42, and the differential duct 32 is fully opened. At the intermediate position, the through-hole 32a is closed by the opening / closing door 42, and the differential duct 32 is opened about half. The vent door 17 and the foot door 18 can also be rotated to the closed position, the open position, and the intermediate position.
[0016]
FIG. 10 is a block diagram of an air conditioner that mainly controls the ventilation operation. The controller 50 is connected to an operation switch 51 (air conditioner switch, fan switch, off switch, etc.) for commanding the operation / stop of the air conditioner, a temperature sensor 52 for detecting the temperature T in the vehicle compartment, and the like. The controller 50 executes the following processing based on the input signals from these, and a fan motor 11A for driving the blower fan, an actuator 10A for driving the inside / outside air switching door, an actuator 14A for driving the air mix door, The drive of the actuator 16A for driving the differential door, the actuator 17A for driving the vent door, and the actuator 18A for driving the foot door are controlled.
[0017]
FIG. 11 is a flowchart illustrating an example of processing executed by the controller 50. First, in step S1, it is determined whether or not the operation switch 51 is on, that is, whether or not an operation command for the air conditioner is input. If step S1 is affirmed, it will progress to step S2 and will perform normal air-conditioning control. That is, a control signal corresponding to a command from a well-known air conditioner switch, fan switch, intake mode changeover switch, blow mode selection switch, temperature setting switch, etc. is output to the fan motor 11A and the actuators 10A, 14A, 16A-18A. Control the intake mode, blowout mode, and air conditioning temperature. In addition, an example of the operation | movement at the time of normal air-conditioning control is mentioned later (FIGS. 2-6).
[0018]
On the other hand, when step S1 is denied, it progresses to step S3 and it is determined whether the detected value T by the temperature sensor 52 is higher than predetermined value Ta. This is a determination of whether or not a ventilation operation is necessary, and the predetermined value Ta is set to about 30 ° C. to 40 ° C., for example. If step S3 is negative, that is, it is determined that the ventilation operation is unnecessary, the process proceeds to step S4, the energization to the fan motor 11A is stopped, and the rotation of the blower fan 11 is stopped. When step S3 is affirmative, that is, when it is determined that ventilation operation is necessary, the process proceeds to step S5, a control signal is output to the actuators 10A, 14A, 16A-18A, and the doors 10, 14, 16-18 are subjected to ventilation operation. To turn. That is, the inside / outside air switching door 10 is turned to the ventilation position, the air mix door 14 is turned to the full cool position, and the differential door 16, the vent door 17 and the foot door 18 are turned to the closed position. Next, in step S6, a drive signal is output to the fan motor 11A, and the blower fan 11 is rotated at a predetermined rotational speed.
[0019]
Next, the operation of the vehicle air conditioner according to the present embodiment will be described more specifically.
(1) Normal air conditioning operation When an operation switch 51 such as an air conditioner switch is turned on, normal air conditioning control is performed (step S2). In this case, for example, when the inside air introduction mode is selected as the intake mode and the vent mode is selected as the blowing mode, the inside / outside air switching door 10 is brought into the inside air introduction position as shown in FIG. 17 and the foot door 18 are rotated to the closed position, and the vent door 17 is rotated to the open position. Moreover, the air mix door 14 rotates to a full cool position, for example. As a result, the inside air is sucked into the air introduction portion 7 from the space 5 in the instrument panel 2 through the inside air inlet 3. Then, after being cooled by the evaporator 12 and bypassing the heater core 13, the air is blown into the vehicle compartment via the vent outlet 20. Further, air flows through the air passage 9 on the back side of the blower fan 11 as shown in the figure, and the fan motor 11A is cooled. At this time, the through hole 31a is closed, and no air flows in the ventilation passage 34.
[0020]
For example, when the inside air introduction mode is selected as the intake mode and the differential foot mode is selected as the blowing mode, the inside / outside air switching door 10 is at the inside air introduction position, and the differential door 16 and the foot door 18 are at the intermediate positions as shown in FIG. In addition, the vent door 17 rotates to the closed position. Moreover, the air mix door 14 rotates to a full hot position, for example. Thus, the inside air taken into the air introduction unit 7 is cooled by the evaporator 12, heated by the heater core 13, and blown into the vehicle interior via the differential outlet 19 and the foot outlet 21. At this time, the through holes 31a and 32a are closed, and no air flows in the ventilation passages 33 and 34.
[0021]
When the inside air introduction mode is selected as the intake mode and the differential mode is selected as the blowing mode, the inside / outside air switching door 10 is in the inside air introduction position, the differential door 16 is in the open position, the vent door 17 and the foot door 18 as shown in FIG. Each rotate to a closed position. As a result, the inside air taken into the air introduction section 7 is cooled by the evaporator 12, heated by the heater core 13, and blown into the vehicle interior via the differential outlet 19. Also in this case, the through holes 31a and 32a are closed, and no air flows in the ventilation passages 33 and 34.
[0022]
On the other hand, for example, when the outside air introduction mode is selected as the intake mode and the foot mode is selected as the blowing mode, the inside / outside air switching door 10 is in the outside air introduction position, the foot door 18 is in the open position, and the differential door is shown in FIG. 16 and the vent door 17 are each rotated to the closed position. Moreover, the air mix door 14 rotates to a full hot position, for example. As a result, outside air is sucked into the air introduction part 7 from the cowl part 6 through the outside air intake 4, cooled by the evaporator 12, heated by the heater core 13, and then blown into the vehicle interior via the foot outlet 21. . At this time, the through holes 30a and 31a are closed, and no air flows in the ventilation passages 33 and 34.
[0023]
For example, when the inside / outside air introduction mode is selected as the intake mode and the vent mode is selected as the blowing mode, the inside / outside air switching door 10 rotates to the inside / outside air introduction position as shown in FIG. In the open position, the differential door 16 and the foot door 18 rotate to the closed position, respectively. Moreover, the air mix door 14 rotates to a full cool position, for example. As a result, the inside air and the outside air are sucked into the air introduction part 7 through the inside air inlet 3 and the outside air inlet 4, cooled by the evaporator 12, bypassed the heater core 13, and then brought into the vehicle interior via the vent outlet 20. Be blown. At this time, the through hole 31a is closed, and no air flows in the ventilation passage 34.
[0024]
(2) Ventilation operation When the operation switch 51 is turned off by stopping the engine or the like, the normal air-conditioning operation is terminated and the air blowing into the passenger compartment is stopped. Here, when the temperature T in the passenger compartment is equal to or lower than the predetermined value Ta, the blower fan 11 is stopped and the ventilation operation is not performed (step S4). For example, when a vehicle is parked under hot weather, a temperature distribution is generated in the passenger compartment as shown by the dotted line in FIG. 9 due to the influence of solar radiation from the front window 25, and the space 23 between the upper surface of the instrument panel 2 and the front window 25 is the most. It becomes high temperature. Moreover, the temperature of the space 5 in the instrument panel also rises as the temperature of the upper surface of the instrument panel rises.
[0025]
When the temperature T in the passenger compartment exceeds a predetermined value Ta, as shown in FIG. 1, the inside / outside air switching door 10 is in the ventilation position, the air mix door 14 is in the full cool position, and the differential door 16, the vent door 17 and the foot door 18 are closed. Each position is rotated (step S5). Moreover, the blower fan 11 rotates with the electric power from a battery (step S6). At this time, each of the through holes 30a to 32a is opened, and the air introduction unit 3 draws in the inside air from the space 5 in the instrument panel 2 through the inside air intake port 3, and the differential outlet 19, the differential duct 32, and the ventilation passage Inside air is sucked from the passenger compartment through 33. The sucked inside air is discharged out of the passenger compartment through the air passage 9, the ventilation passage 34, and the outside air intake passage 31, as shown in FIG. Accordingly, outside air having a relatively low temperature is taken from the drafter 22 into the vehicle interior. As a result, the vehicle interior is ventilated, and the temperature in the vehicle interior decreases.
[0026]
In this case, the inside air is sucked into the air conditioning unit 1 from the space 23 on the top surface of the instrument panel, which is a high temperature portion, and the space 5 in the instrument panel, and is discharged from the cowl portion 6 to the outside of the passenger compartment. Since the air is sucked into the vehicle interior, the vehicle interior can be efficiently ventilated, and the temperature rise in the vehicle interior can be effectively suppressed. On the other hand, for example, when the outside air is sucked into the vehicle interior from the cowl portion 6 and exhausted from the drafter 22 to the outside of the vehicle interior to ventilate, high-temperature air is diffused in the vehicle interior. I can't.
[0027]
When the temperature T in the passenger compartment decreases to a predetermined value Ta or less by the above ventilation operation, the blower fan 11 stops rotating and ends the ventilation operation (step S4). When the temperature T in the passenger compartment reaches the predetermined value Ta again, the ventilation operation is resumed. In addition, when there is a possibility that hunting may occur due to resumption of the ventilation operation immediately after the end of the ventilation operation, the predetermined value Ta for determining the stop of the ventilation operation is set to be greater than the predetermined value Ta for determining the start of the ventilation operation. You can set it lower.
[0028]
According to the above embodiment, there exist the following effects.
(1) The inside air intake passage 30 and the differential duct 32, and the air passage 9 for cooling the fan motor and the outside air intake passage 31 are communicated with each other through the ventilation passages 33 and 34, respectively. Inside air was sucked into the air introduction part 7 from the differential outlet 19 and discharged from the outside air inlet 4 via the ventilation passage 34. As a result, high-temperature air is discharged to the outside of the passenger compartment, and the temperature rise in the passenger compartment can be efficiently suppressed during parking in hot weather.
(2) Since the outside air is sucked from the drafter 22 at the lower part of the vehicle during the ventilation operation, low-temperature outside air is sucked into the vehicle interior, so that the vehicle interior can be efficiently ventilated.
(3) Since the inside air is sucked not only from the differential outlet 19 but also from the inside air inlet 3, the space 5 in the instrument panel 2 can be ventilated. As a result, when the occupant operates the air conditioner after leaving the vehicle (during cool-down), it is possible to prevent the warm air from being blown out and to prevent the occupant from feeling uncomfortable.
(4) Since the ventilation operation is performed when the temperature T in the passenger compartment exceeds the predetermined value Ta, the ventilation operation is not performed more than necessary, and the power consumption of the battery can be saved.
[0029]
(5) Since air is blown into the vehicle interior by the blower fan 11 during normal air-conditioning operation, and air inside the vehicle interior is sucked in by the blower fan 11 during ventilation operation, there is no need to provide a separate fan for ventilation. The number of parts can be saved.
(6) During the ventilation operation, the inside air is sucked in from the differential outlet 19 and the inside air inlet 3 and is discharged from the outside air inlet 4, so that it is not necessary to provide a separate inlet and outlet for ventilation, and the air conditioner is large. Can be prevented.
(7) Since part of the differential duct 19 and the inside air intake passage 30, and the air passage 9 and the outside air intake passage 31 are used as ventilation passages, the number of parts can be saved by sharing the passage parts.
(8) Since the open / close doors 41 and 42 are provided in the inside / outside air switching door 10 and the differential door 16, respectively, and the ventilation passages 33 and 34 are opened / closed according to the opening degree of the inside / outside air switching door 10 and the differential door 16. It is not necessary to control the opening degree of each independently, and the configuration is easy.
(9) Since the inside / outside air switching door 10 and the opening / closing door 41 and the differential door 16 and the opening / closing door 42 are integrated, the number of parts can be saved.
[0030]
In the above-described embodiment, the differential air outlet 19 and the internal air inlet 3 are used as the ventilation inlet, the outside air inlet 4 is used as the ventilation outlet, the differential duct 32 and the internal air intake passage are used as a part of the ventilation passage. 30, the air passage 9, and the outside air intake passage 31 are used, but a suction port, an air outlet, and an air passage dedicated to ventilation may be provided. That is, a ventilation passage may be configured in addition to the first ventilation passage 30 and the second ventilation passage 31. Further, as long as the inside air is sucked from at least a high temperature location in the passenger compartment, the inside air suction port may be one place or three places or more instead of the two places (the inside air intake port 3 and the differential outlet 19) as described above. When applying to the vehicle which has a blower outlet in the upper surface of the instrument panel 2, you may make it inhale high temperature air from the blower outlet. That is, if air is sucked in from the air outlet provided in the vicinity of the windshield 25 that is easily affected by solar radiation, the air may be sucked in from air outlets other than the differential air outlet 19.
[0031]
Although the necessity of the ventilation operation when the vehicle is parked is determined based on the OFF of the operation switch 51 and the detection value T (> Ta) of the temperature sensor 52, the configuration of the determination unit is not limited thereto. The inside / outside air switching door 10, the differential door 16, the open / close doors 41 and 42, and the blower fan motor 11 are controlled by a signal from the controller 50. However, if the air flow in the ventilation passages 33 and 34 is controlled. The configuration of the flow control means is not limited to that described above. For example, the inside / outside air switching door 10 and the opening / closing door 41, and the differential door 16 and the opening / closing door 42 may be provided separately rather than integrally. Although air is sucked from the exhaust drafter 22, the position of the exhaust section is not limited to that described above as long as low-temperature air is sucked from the lower part of the vehicle, that is, from a place that is not easily affected by solar radiation. The opening / closing door 42 opens and closes the through hole 32a, and the opening / closing door 41 opens and closes the through holes 30a and 31a. That is, the opening / closing door 42 constitutes the first opening / closing door, and the opening / closing door 41 constitutes the first opening / closing door and the second opening / closing door, but the first opening / closing door is constituted by a single door. May be.
[0032]
In the above embodiment, the fan motor 11A and the actuators 10A, 14A, and 16A to 18A are driven by batteries, but may be driven by solar cells. That is, as long as the features and functions of the present invention can be realized, the present invention is not limited to the vehicle air conditioner of the embodiment.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a schematic configuration and operation (at the time of a ventilation operation) of a vehicle air conditioner according to an embodiment of the present invention.
FIG. 2 is a diagram showing an example of the operation of the vehicle air conditioner according to the embodiment of the present invention (inside air introduction and vent mode).
FIG. 3 is a diagram showing an example of the operation of the vehicle air conditioner according to the embodiment of the present invention (in the case of outside air introduction and foot mode).
FIG. 4 is a diagram showing an example of the operation of the vehicle air conditioner according to the embodiment of the present invention (inside air introduction, differential foot mode).
FIG. 5 is a diagram showing an example of operation of the vehicle air conditioner according to the embodiment of the present invention (inside air introduction and differential mode).
FIG. 6 is a diagram showing an example of the operation of the vehicle air conditioner according to the embodiment of the present invention (inside / outside air introduction and vent mode).
7 is a diagram showing details of the inside / outside air switching door of FIG. 1; FIG.
FIG. 8 is a diagram showing details of the differential door of FIG. 1;
FIG. 9 is a view showing a state in which the vehicle air conditioner according to the embodiment of the present invention is attached to the vehicle.
FIG. 10 is a block diagram of a vehicle air conditioner according to an embodiment of the present invention.
FIG. 11 is a flowchart showing an example of processing executed by the controller of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Air conditioning unit 3 Inside air inlet 4 Outside air inlet 5 Space 6 Cowl part 7 Air introduction part 9 Air passage 10 Inside / outside air switching door 11 Blower fan 16 Differential door 19 Differential outlet 22 Drafter 30 Inside air inlet path 31 Outside air inlet path 32 Differential duct 30a-32a Through-hole 33 1st ventilation passage 34 2nd ventilation passage 41,42 Open / close door 50 Controller 51 Actuation switch 52 Temperature sensor

Claims (6)

A blower for blowing the conditioned air generated in the air conditioning unit into the vehicle interior via the air outlet;
A ventilation passage that guides air from a hot spot in the passenger compartment, which is likely to become hot due to solar radiation, to the outside of the passenger compartment by the operation of the blower;
Determining means for determining whether ventilation operation is required when the vehicle is parked;
If it is determined that the ventilation operation is unnecessary by the determination means, the flow of air in the ventilation passage is prohibited. If the determination means determines that the ventilation operation is necessary, the air is blown from the outlet into the vehicle interior. And a flow control means for guiding air from the passenger compartment to the outside of the passenger compartment through the ventilation passage ,
A differential duct for guiding conditioned air from the air conditioning unit to a defrost outlet;
An internal air intake passage for introducing internal air to the upstream side of the blower through an internal air intake;
An outside air intake passage that guides outside air to the upstream side of the blower via an outside air inlet ;
The ventilation passage, and wherein Rukoto to Yusuke the first ventilation passage for introducing air into said Kido input passage from the defroster duct, and a second ventilation passage for introducing air into the outside air intake passage from the blower A vehicle air conditioner. In the vehicle air conditioner according to claim 1,
An exhaust part for exhausting the air in the passenger compartment to the outside of the passenger compartment is provided at the lower part of the vehicle. A vehicle air conditioner characterized. The vehicle air conditioner according to claim 1 or 2,
  The flow control means includes
  A first open / close door that opens and closes the first ventilation passage;
  A second opening / closing door for opening and closing the second ventilation passage;
  A differential door that opens and closes the differential duct before the conditioned air from the air conditioning unit reaches the first ventilation passage from the differential duct;
  An inside / outside air switching door that is switchable at least between an inside air introduction position for guiding inside air from the inside air inlet to the upstream side of the blower and an outside air introduction position for guiding outside air from the outside air inlet to the upstream side of the blower;
  Operating means for operating the blower,
  When the determination means determines that ventilation operation is unnecessary, at least the operation of the blower by the operation means is stopped, and when the determination means determines that ventilation operation is required, the differential door is closed, and the first An air conditioner for vehicles, wherein the first open / close door and the second open / close door are opened, the inside / outside air switching door is switched to the inside air introduction position, and the blower is operated by the operating means. The vehicle air conditioner according to claim 3,
  The first open / close door is provided integrally with the differential door so as to close the first ventilation passage when the differential door is opened and to open the first ventilation passage when the differential door is closed. A vehicle air conditioner. The vehicle air conditioner according to claim 3,
  The first open / close door opens the first ventilation passage when the inside / outside air switching door is switched to the inside air introduction position, and closes the first ventilation passage when switched to the outside air introduction position. The vehicle air conditioner is provided integrally with the inside / outside air switching door. In the vehicle air conditioner according to any one of claims 3 to 5,
  The inside / outside air switching door can be switched to a ventilation position for further ventilation operation,
  The second opening / closing door opens the second ventilation passage when the inside / outside air switching door is switched to the ventilation position, and closes the second ventilation passage when switched to the inside air introduction position and the outside air introduction position. Thus, the vehicle air conditioner is provided integrally with the inside / outside air switching door.

Images