JP2016106056A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle which improves heating efficiency while preventing window fogging during heating in a cabin.SOLUTION: An air conditioner 1 for a vehicle for adjusting an air ratio introduced from an outdoor air port 21 and an air ratio introduced from an indoor air port 22 out of air fed into a cabin by blower means 60 by a position of a movement member 30 provided in an indoor/outdoor air introduction part 20. A vehicle including this air conditioner includes detection means 80 for detecting a physical amount regarding a ram pressure, and in the case where the cabin is being heated by heating means 70, the movement member 30 moves in a direction in which air resistance becomes large with respect to the air introduced from the outdoor air port 21 when the ram pressure increases by controlling of drive means 40 by control means 50, and moves in a direction in which it becomes small when the ram pressure decreases.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle air conditioner that heats the interior of a vehicle.

  In general, a vehicle air conditioner mounted on a vehicle is configured to send air introduced from an inside / outside air introduction unit having an outside air port and an inside air port to the inside of the vehicle by a blower. Basically, when heating the inside of the vehicle, the air sent from the inside / outside air introduction unit is heated, and when cooling the inside of the vehicle, the air sent from the inside / outside air introduction unit to the inside of the vehicle is cooled.

  The inside / outside air introduction section is provided with a moving member that is driven by driving means. It is a member called a so-called air intake door, inside / outside air switching door, or the like. The predetermined control means controls the drive means to adjust the ratio of the air introduced from the outside air port and the ratio of the air introduced from the inside air port in the air sent into the vehicle depending on the position of the moving member. . As disclosed in Patent Documents 1 to 8, there are various structures and control methods for this type of moving member.

  Patent Document 1 states that “a variable opening mode in which the opening on the outside air introduction side is narrowed in a stepless manner or in multiple steps, both preventing intrusion of odor, preventing negative pressure in the vehicle interior, and preventing increase in CO2 in the vehicle interior. “Configuration” is disclosed. Patent Document 2 states that “by reducing the amount of fresh air that enters the air conditioning system, the work that the air conditioning system needs to do to maintain the interior of the vehicle at a comfortable level is reduced, and the thermal efficiency of the air conditioning in the vehicle is increased. Is disclosed. Patent Document 3 discloses “a configuration including an air intake door provided with a recirculation door that is opened by a suction negative pressure of a fan”. Patent Document 4 discloses “a configuration including a ram pressure detecting unit that substantially detects a ram pressure during vehicle travel”. Patent Document 5 states that “internal / external air switching means is controlled so as to obtain a necessary outside air introduction amount in accordance with an increase in the speed of the vehicle, and the outside air introduction amount is set as a necessary outside air introduction amount regardless of an increase in ram pressure. Is disclosed. Patent Document 6 discloses that “the vehicle speed is also taken into consideration as a condition that window fogging is estimated to occur”. Patent Document 7 discloses that “with respect to the air introduced into the vehicle, the outside air can ensure the anti-fogging performance of the window glass than the inside air”. Patent Document 8 discloses “a configuration in which the inside / outside air switching member is moved according to the speed of the vehicle”.

Japanese Patent No. 3695567 Japanese Patent No. 4897692 Japanese Utility Model Publication No. 55-174007 Japanese Utility Model Publication No. 3-47212 JP 2006-193116 A JP 2012-136212 A JP 2012-171489 A JP 2012-188001 A

  Nowadays, vehicle propulsion mechanisms such as fuel engines and electric motors are required to improve energy efficiency, and the amount of exhaust heat tends to decrease. Therefore, when heating the interior of the vehicle using the exhaust heat of the propulsion mechanism, it is desirable to circulate the air in the vehicle so as not to release the heat. In addition, a vehicle having a small amount of exhaust heat from the propulsion mechanism may be heated by an electric heating heater or a combustion heater. In this case as well, it is desirable to circulate the air in the vehicle. However, at the time of heating, it is necessary to prevent the fogging of the window from being suppressed by increasing the humidity inside the vehicle, and there is a circumstance that air outside the vehicle must be sent into the vehicle.

  As a conclusion, when heating the air to be sent to the inside of the car and heating the inside of the car, it is desirable to introduce air from the inside air as much as possible as long as the air is introduced from the outside air and no window fogging occurs. Sometimes, it is important to specifically specify how to move the moving member in response to a change in ram pressure in the inside / outside air introduction section accompanying an increase or decrease in the speed of the vehicle. However, the above-described patent document does not show a specific mode as to how to move the moving member. As a result of repeating experiments to realize a more practical vehicle air conditioner, the inventor of the present application has come to specify an extremely excellent configuration, and as a result, has achieved the present invention.

  An object of the present invention is to provide a vehicle air conditioner that improves heating efficiency while preventing fogging of windows during heating in a vehicle.

  The invention described in the first claim of the present application includes an inside / outside air introduction section (20) having an outside opening (21) for introducing outside air and an inside opening (22) for introducing inside air, and the inside / outside air introduction section. A moving member (30) provided in (20), a driving means (40) for moving the moving member (30) relative to the outside air port (21) and the inside air port (22), and the driving means ( 40) control means (50), air blowing means (60) for sending air from the inside / outside air introduction section (20) into the vehicle, and heating means for heating the inside of the vehicle by heating the air sent into the vehicle (70), and the ratio of the air introduced from the outside air port (21) to the air sent into the vehicle depending on the position of the moving member (30) and the ratio of the air introduced from the inside air port (22) In the vehicle air conditioner (1) for adjusting the The vehicle provided therewith has a detection means (80) for detecting a physical quantity related to the ram pressure, and when the interior of the vehicle is heated by the heating means (70), the moving member (30) has the control means (50 ), When the ram pressure increases, it moves in the direction of increasing air resistance against the air introduced from the outside air port (21), and when the ram pressure decreases, the outside air port The vehicle air conditioner (1) is configured to move in a direction in which the air resistance decreases with respect to the air introduced from (21).

  The invention described in claim 2 of the present application is that, in claim 1, even if the moving member (30) has an increased air resistance to air introduced from the outside air port (21) as the ram pressure increases, It is a vehicle air conditioner (1) of the structure which moves so that the ratio of the air introduce | transduced from the said external air port (21) to the air sent to the said vehicle may not become low.

  The invention described in claim 3 of the present application is that, in claim 1, even if the moving member (30) has an increased air resistance to air introduced from the outside air port (21) as the ram pressure increases, It is a vehicle air conditioner (1) of the structure which moves so that the ratio of the air introduce | transduced from the said external air port (21) to the air sent to the said vehicle may become high.

  The invention described in claim 4 of the present application is that, in claim 2 or 3, the air blowing means (60) is capable of adjusting the amount of air sent from the inside / outside air introduction section (20) into the vehicle. The ratio of the air introduced from the outside air port (21) to the air sent into the vehicle decreases as the amount of air sent from the inside / outside air introduction part (20) increases into the vehicle, and increases as the amount decreases. This is a vehicle air conditioner (1) configured as described above.

  According to the fifth aspect of the present invention, in any one of the second to fourth aspects, when the interior of the vehicle is heated by the heating means (70), the outside air port occupying the air sent into the vehicle ( The ratio of the air introduced from 21) is the vehicle air conditioner (1) configured to be in the range of 65-85%.

  The invention described in claim 6 of the present application is the vehicle air conditioner (1) according to any one of claims 2 to 5, wherein the detecting means (80) is a speed measuring means of the vehicle. .

  The invention described in claim 7 of the present application is the pressure sensor according to any one of claims 2 to 5, wherein the detection means (80) is a pressure sensor that detects the pressure of air that the vehicle receives from outside the vehicle. It is a vehicle air conditioner (1).

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle air conditioner which improves heating efficiency can be obtained, preventing the window fogging at the time of heating in a vehicle.

It is explanatory drawing which concerns on the 1st and 2nd Example of this invention and shows a vehicle air conditioner. It is side surface sectional drawing which concerns on the 1st and 2nd Example of this invention, and shows an internal / external air introduction part. It is a characteristic graph of the ratio of the air which concerns on 1st Example of this invention and introduce | transduces from an external air port. 6 is a characteristic graph of the moving amount of the moving member with respect to the speed of the vehicle according to the first embodiment of the present invention. It is a characteristic graph of the ratio of the air which concerns on 2nd Example of this invention and introduce | transduces from an external air port. It is a characteristic graph of the moving amount | distance of the moving member with respect to the speed of a vehicle concerning 2nd Example of this invention. It is a flowchart which concerns on 3rd Example of this invention and shows the control in the case of coping with pollution of external air.

(First embodiment)
A first embodiment of the present invention will be described below with reference to the drawings. The vehicle air conditioner 1 of this example shown in FIG. 1 is provided in an inside / outside air introduction unit 20 having an outside air port 21 for introducing outside air and an inside air port 22 for introducing inside air, and an inside / outside air introduction unit 20. The moving member 30, the driving means 40 that moves the moving member 30 relative to the outside air port 21 and the inside air port 22, the control means 50 that controls the driving means 40, and the air that sends air from the inside / outside air introducing unit 20 to the inside of the vehicle Means 60 and heating means 70 for heating the air to be sent into the vehicle to heat the inside of the vehicle are provided. The inside / outside air introduction unit 20 is connected to the duct 10 that guides air into the vehicle, and the heating means 70 is provided inside the duct 10.

  The heating means 10 of this example includes a heating heat exchanger that heats air by the heat of a liquid heat medium that cools a combustion engine or an electric motor, and an electromagnetically driven type that is disposed on the wind of the heating heat exchanger. With a mix door. The heat medium is circulated by a predetermined water pump. During heating, the position of the mix door is moved under the control of the control means 50, the ratio of the air passing through the heating heat exchanger and the air bypassing the heating heat exchanger is adjusted, and the air sent into the vehicle is adjusted. The temperature is controlled. That is, the interior of the vehicle is heated using the exhaust heat of the vehicle propulsion mechanism. Alternatively, the air sent into the vehicle may be heated by an electric heating heater or a combustion heater. Moreover, the heat radiator of a known heat pump type refrigeration cycle may be used.

  The vehicle air conditioner 1 adjusts the ratio of air introduced from the outside air port 21 and the ratio of air introduced from the inside air port 22 in the air sent into the vehicle depending on the position of the moving member 30.

  The vehicle provided with the vehicle air conditioner 1 includes a detection unit 80 that detects a physical quantity related to the ram pressure, and the control unit 50 is a driving unit according to the air conditioning state in the vehicle and the physical quantity detected by the detection unit 80. 40 is controlled, and the moving member 30 is brought to an appropriate position in the air-conditioning state at that time.

  In this example, a vehicle speed measuring means is used as the detecting means 80. The ratio of the air introduced from the outside air port 21 and the ratio of the air introduced from the inside air port 22 differ depending on the ram pressure in the inside / outside air introduction unit 20 even if the position of the moving member 30 is the same. The change can be expressed as a function of the speed of the vehicle by removing unspecified conditions such as wind and in-vehicle pressure. Therefore, the speed measuring means provided in advance in the vehicle can be used as the detecting means 80. The ram pressure increases as the vehicle speed increases, and the ram pressure decreases as the vehicle speed decreases. Alternatively, a pressure sensor that detects the pressure of the air that the vehicle receives from the outside of the vehicle is provided in the space between the outside air port 21 and the moving member 30 or other part of the vehicle, and is used as the detection means 80. May be.

  As shown in FIG. 2, the inside / outside air introduction unit 20 of this example is a casing member having an outside air port 21 at an upper portion and an inside air port 22 at a side portion, and a blower 60 disposed inside the lower portion.

  As the air blowing means 60, what drives a sirocco fan with a motor is employ | adopted. The motor of the blowing unit 60 is controlled by the control unit 50. The air blowing means 60 is a variable air flow rate type that can adjust the amount of air sent from the inside / outside air introduction unit 20 into the vehicle by changing the voltage for driving the motor.

  The moving member 30 of this example is a door-type member that opens and closes with respect to the outside air port 21 and the inside air port 22, and is configured to move between a position where the outside air port 21 is closed and a position where the inside air port 22 is closed. ing. The driving means 40 that moves the moving member 30 is an electromagnetically driven actuator having a rotational position detecting function. One side of the moving member 30 is connected to the driving means 40. The amount of movement of the moving member 30 corresponds to the rotational position of the actuator. In the following description, the moving amount of the moving member 30 at the position where the outside air port 21 is closed is 0%, the moving amount of the moving member 30 at the position where the inside air port 22 is closed is 100%, and the ratio of the moving amount of the moving member 30 between them Is proportional to the change in the angle of the actuator. The air resistance of the moving member 30 with respect to the air introduced from the outside air port 21 decreases as the rate of movement increases and increases as the rate of movement decreases. The moving member 30 and the driving means 40 are not limited to such an open / close moving type. For example, it is also possible to employ a rotary type moving member 30 that rotates forward and backward about a rotating shaft connected to a predetermined driving means 40.

  According to this example, when the interior of the vehicle is heated by the heating means 70, the moving member 30 has an air resistance against the air introduced from the outside air port 21 when the ram pressure increases by the control of the driving means 40 by the control means 50. When the ram pressure decreases, the air resistance decreases with respect to the air introduced from the outside air port 21, and the air against the air introduced from the outside air port 21 as the ram pressure increases. Even if the resistance increases, the air is introduced so that the ratio of the air introduced from the outside air port 21 in the air sent into the vehicle does not decrease.

  That is, for such a device, as a basic premise thereof, (a) when the air resistance of the moving member 30 increases with respect to the air introduced from the outside air port 21, the ratio of the air introduced from the outside air port 21 decreases. b) There is a relationship that when the ram pressure increases, the ratio of air introduced from the outside air port 21 increases. In this respect, the vehicle drive device 1 of this example is introduced from the outside air port 21 although the moving member 30 moves in a direction in which the air resistance increases with respect to the air introduced from the outside air port 21 as the ram pressure increases. The moving amount of the moving member 30 at that time is set so that the ratio of air does not decrease. In order to maintain the air-conditioning state in the vehicle satisfactorily, the ratio of air is adjusted based on the relationship between (a) and (b).

  If the moving member 30 does not move in the direction in which the air resistance increases with respect to the air introduced from the outside air port 21 as the ram pressure increases, the amount of air introduced from the outside air port 21 increases as the ram pressure increases. At that time, if the amount of air introduced from the outside air port 21 exceeds the amount of air blown by the blowing means 60, the air flows from the inside / outside air introducing unit 20 through the inside air port 22 into the vehicle. That is, air flows backward in the inside air port 22. Then, the objective of circulating part of the air in the vehicle and improving the heating efficiency cannot be achieved. In this respect, the vehicle air conditioner 1 of the present example prevents the backflow of air in the inside air port 22 by moving the moving member 30 in a direction in which the air resistance increases with respect to the air introduced from the outside air port 21. Yes. In order to improve heating efficiency, the backflow of air in the inside air port 22 is prevented, and the moving member 30 is moved so that the ratio of air introduced from the outside air port 21 does not become 100%. Thus, by always circulating the air in the vehicle regardless of the ram pressure, the heating efficiency can be reliably improved.

  Here, considering only the heating efficiency, it is desirable that the ratio of air introduced from the outside air port 21 is low. However, considering the condition of preventing window fogging, it is necessary to examine the appropriate ratio. Hereinafter, the ratio of the air introduced from the outside air port 21 in the air sent into the vehicle will be described in detail.

  As shown in FIG. 3, the proportion of the air introduced from the outside air port 21 in the air sent into the vehicle increases as the moving amount of the moving member 30 increases. Further, the manner of increase differs depending on the speed of the vehicle, and as the speed of the vehicle increases, the proportion of air introduced from the outside air port 21 tends to increase. When the moving amount of the moving member 30 is in the vicinity of 0% to 40%, the rate of air introduced from the outside air port 21 increases significantly as the vehicle speed increases. The increase or decrease in vehicle speed corresponds to the increase or decrease in ram pressure.

  A1 and A2 in FIG. 3 indicate the relationship between the moving amount of the moving member 30 and the speed of the vehicle in this example. A1 is the case where the air volume of the air blowing means 60 is small, and A2 is the case where the air volume of the air blowing means 60 is large. The heating means 70 can be adjusted in temperature. When the actual temperature in the vehicle is substantially equal to the target temperature, the air blowing amount of the blowing means 60 is reduced, and the actual temperature in the vehicle is lower than the target temperature. If it is too low, the air blowing amount of the air blowing means 60 is increased. The ratio of the air introduced from the outside air port 21 is constant at 80% when the air volume is small and 70% when the air volume is large. Even if the vehicle speed increases, that is, the ram pressure increases. But it doesn't go down.

  When A1 and A2 are expressed by the relationship between the moving amount of the moving member 30 and the speed of the vehicle, a graph as shown in FIG. 4 is obtained. The control means 50 stores the information shown in FIG. 4, and controls the drive means 40 according to this information.

  According to such a configuration, it is possible to improve heating efficiency while preventing window fogging during heating in the vehicle. That is, the vehicle air conditioner 1 of this example introduces air from the inside air port 22 as much as possible within a range where window fogging does not occur at the same time as air is introduced from the outside air port 21. Even without depending on the configuration of the inside / outside air introduction unit 20 and the moving member 30, the control unit 50 can achieve excellent effects. In the case of this example, it is only necessary to adjust the amount of movement of one moving member 30, so there is an advantage that the number of parts is small.

  In particular, according to the experiments of the present inventor, when the inside of the vehicle is heated by the heating means 70, the ratio of the air introduced from the outside air port 21 to the air sent into the vehicle is 65 to 85% as a practical value. It has been found to be within range.

  In the case of this example, the ratio of the air introduced from the outside air port 21 to the air sent into the vehicle decreases when the amount of air sent from the inside / outside air introduction unit 20 into the vehicle increases, and increases when the amount decreases. ing. Considering the condition that window fogging is likely to occur if the temperature difference between the inside and outside of the vehicle is large, the proportion of the air introduced from the outside air port 21 is relatively large if the inside of the vehicle is satisfactorily heated. It is considered desirable to do so.

  Furthermore, the amount of air outside the vehicle sent into the vehicle is not uniquely determined by the amount of movement of the moving member 30, but also depends on the amount of air blown by the air blowing means 60. That is, even if the ratio of the air introduced from the outside air port 21 to the air sent from the inside / outside air introduction unit 20 to the inside of the vehicle is the same, if the amount of air sent from the inside / outside air introduction unit 20 to the inside of the vehicle increases, the air is introduced from the outside air port 21. The amount of air increases. For example, even if the moving amount of the moving member 30 is the same, the amount of air introduced from the outside air port 21 decreases when the amount of blown air is small, and increases when the amount of blown air is large. Therefore, in this example, in order to more reliably prevent window fogging, the ratio of the air sent from the outside air port 21 to the inside of the vehicle when the air volume is small is set to be somewhat higher than when the air volume is large, and the amount of air outside the vehicle Can be secured sufficiently.

  The amount of air blown by the air blowing means 60 can also be configured to gradually increase or decrease between the case where the airflow amount is small and the case where the airflow amount is large by adjusting the voltage for driving the motor. In that case, the ratio of the air sent from the outside air port 21 into the vehicle may be set according to the voltage for driving the motor. As the voltage is increased, the ratio of the air sent from the outside air port 21 into the vehicle decreases.

  The air ratio characteristic graph shown in FIG. 3 is unique to the apparatus due to the structure of the inside / outside air introduction unit 20 and the moving member 30. Therefore, the information shown in FIG. 4 stored in the control means 50 is acquired as a result of actually conducting an experiment on the target device. In this example, the common air ratio characteristic graph is used when the air blowing amount of the air blowing means 60 is small and large. However, if the air ratio characteristic graph is greatly different depending on the conditions, it corresponds to each condition. It is desirable to use an air ratio characteristic graph.

  Generally, in this type of apparatus, the proportion of air introduced from the outside air port 21 decreases as the amount of air blown by the air blowing means 60 increases. This is because a flow path communicating with the outside of the vehicle is provided upstream of the outside air port 21, and the air flow resistance of the flow path is higher than the air flow resistance of the flow path from the inside of the vehicle to the inside air port 22. When the ratio of air introduced from the outside air port 21 is remarkably reduced depending on the amount of air blown, it is preferable to use a different air ratio characteristic graph for each air volume.

  As described above, according to this example, it is possible to obtain a vehicle air conditioner that rationally heats the interior of the vehicle. In addition, it is needless to say that the configuration of each part in the present example can be appropriately changed in design within the technical scope described in the claims, and is not limited to that illustrated in the drawings.

(Second embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. The moving member 30 of the present example is configured such that even if the air resistance to the air introduced from the outside air port 21 increases as the ram pressure increases, the ratio of the air introduced from the outside air port 21 in the air sent into the vehicle increases. It is configured to move.

  When the speed of the vehicle increases, that is, when the ram pressure increases, more heat is taken from the window glass by the wind, so that there is a situation that window fogging easily occurs. In order to cope with this, the vehicle air conditioner 1 of this example is configured such that the proportion of air introduced from the outside air port 21 increases as the ram pressure increases.

  B1 and B2 in FIG. 5 indicate the relationship between the moving amount of the moving member 30 and the speed of the vehicle in this example. B1 is the case where the air volume of the air blowing means 60 is small, and B2 is the case where the air volume of the air blowing means 60 is large. The rate of air introduced from the outside air port 21 is 80% when the speed of the vehicle is 0 km / h when the air volume is small, and 70% when the speed of the vehicle is 0 km / h when the air volume is large. As the vehicle speed increases, that is, the ram pressure increases, it increases.

  When B1 and B2 are expressed by the relationship between the moving amount of the moving member 30 and the speed of the vehicle, a graph as shown in FIG. 6 is obtained. The control means 50 stores the information shown in FIG. 6, and controls the drive means 40 according to this information. Other configurations are the same as those of the first embodiment.

  As described above, when the ratio of the air introduced from the outside air port 21 is increased as the ram pressure increases, window fogging can be prevented more reliably.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. The vehicle air conditioner 1 of this example is configured to cope with contamination of outside air. In the case of this example, an outside air sensor for detecting pollutant gas or dust contained in air outside the vehicle is provided at a key point of the vehicle, and the vehicle air conditioner 1 responds to detection information of the outside air sensor. The amount of air introduced from the outside air port 21 is suppressed.

  As shown in the flowchart of FIG. 7, in the vehicle air conditioner 1 of this example, the control means 50 determines the contamination concentration of the air outside the vehicle detected by the outside air sensor (step 1), and if the contamination concentration is low, the heating switch Depending on the state (step 2), a normal mode without heating (step 3) or a normal heating mode (step 4) is set. In the normal heating mode, heating similar to that in the first embodiment or the second embodiment described above is performed.

  If the contamination concentration is high, the outside air reduction mode (step 6) or the outside air reduction heating mode (step 7) in which heating is not performed is set according to the state of the heating switch (step 5). In the outside air reduction mode, the ratio of air introduced from the outside air port 21 is limited to such an extent that the carbon dioxide concentration in the vehicle does not increase. Moreover, if it is a vehicle provided with the air cleaner, it will operate. In the outside air reduction heating mode, the cooling means provided in the vehicle is operated together with the heating means 70 to perform dehumidification, and the ratio of the air introduced from the outside air port 21 is set to be smaller than that in the normal heating mode. In other words, window fogging is prevented by dehumidification. Moreover, if it is a vehicle provided with the air cleaner, it will operate.

  In this way, it may be configured to appropriately deal with contamination of the outside air.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used as a vehicle air conditioner that heats the interior of a vehicle.

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 10 Duct 20 Inside / outside air introduction part 21 Outside air port 22 Inside air port 30 Moving member 40 Driving means 50 Control means 60 Blower means 70 Heating means 80 Detection means

Claims (7)

An inside / outside air introduction unit having an outside air port for introducing air outside the vehicle and an inside air port for introducing air inside the vehicle;
A moving member provided in the inside / outside air introduction section;
Driving means for moving the moving member with respect to the outside air mouth and the inside air mouth;
Control means for controlling the drive means;
A blowing means for sending air from the inside / outside air introduction section into the vehicle;
Heating means for heating the air sent into the vehicle and heating the vehicle,
In the vehicle air conditioner that adjusts the ratio of the air introduced from the outside air port and the ratio of the air introduced from the inside air port in the air sent into the vehicle according to the position of the moving member,
The vehicle provided with this has a detecting means for detecting a physical quantity related to the ram pressure,
When the interior of the vehicle is heated by the heating means, the moving member has an air resistance that is greater than the air introduced from the outside air port when the ram pressure increases due to the control of the driving means by the control means. When the ram pressure decreases, the vehicle air conditioner moves in a direction in which air resistance is reduced with respect to the air introduced from the outside air port.   The moving member moves so that the ratio of the air introduced from the outside air port in the air sent into the vehicle does not decrease even if the air resistance to the air introduced from the outside air port increases as the ram pressure increases. The vehicle air conditioner according to claim 1.   The moving member moves so that the ratio of the air introduced from the outside air port to the air sent into the vehicle increases even if the air resistance to the air introduced from the outside air port increases as the ram pressure increases. The vehicle air conditioner according to claim 1. The air blowing means is configured to be able to adjust the amount of air sent from the inside / outside air introduction section into the vehicle,
The ratio of the air introduced from the outside air port to the air sent into the vehicle decreases when the amount of air sent from the inside / outside air introduction unit into the vehicle increases and increases when the amount decreases. Item 4. The vehicle air conditioner according to Item 2 or 3.   The ratio of air introduced from the outside air occupying the air sent into the vehicle when the vehicle is heated by the heating means is in the range of 65 to 85%. The vehicle air conditioner according to any one of the above.   The vehicle air conditioner according to any one of claims 2 to 5, wherein the detecting means is a speed measuring means of the vehicle.   The vehicle air conditioner according to any one of claims 2 to 5, wherein the detection means is a pressure sensor that detects a pressure of air that the vehicle receives from outside the vehicle.

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