JP7169124B2 - vehicle air conditioner - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner mounted on, for example, an automobile.

Generally, in a vehicle air conditioner, there are a cooling heat exchanger that cools the conditioned air, a heating heat exchanger that heats the conditioned air, and air conditioning that passes through the cooling heat exchanger and the heating heat exchanger. An air mix damper that changes the amount of air for cooling is housed in the air conditioning casing, and the cold air and warm air that have passed through the cooling heat exchanger and the heating heat exchanger are mixed to generate conditioned air at a desired temperature. configured to be The conditioned air generated in the air-conditioning casing is supplied to various parts of the passenger compartment through the defroster passage, the vent passage, the heat passage, and the like.

For example, in a vehicle air conditioner disclosed in Patent Document 1, a heating heat exchanger and an auxiliary heater are arranged in a vertically intermediate portion in an air conditioning casing. Accordingly, air passages are formed above and below the heat exchanger for heating and the auxiliary heater, respectively.

At maximum cooling, the air mix damper blocks the air passage to the heating heat exchanger so that the air for conditioning does not flow to the heat exchanger for heating, and all the air for conditioning passes through the heat exchanger for cooling. cold wind. The cool air generated by passing through the cooling heat exchanger flows through the upper and lower air passages of the heating heat exchanger and the auxiliary heater, respectively, and is mainly supplied to the occupant from the vent passage.

Further, as disclosed in Patent Documents 1 to 3, the auxiliary heater is composed of a PTC heater and has radiation fins through which air passes.

JP 2018-114778 A JP 2018-95074 A JP 2018-95075 A

By the way, as in Patent Document 1, by forming air passages above and below the heat exchanger for heating and the auxiliary heater, respectively, the passage cross-sectional area at the time of maximum cooling is widened to achieve low ventilation resistance. can be done.

However, in the maximum cooling mode, it is common to supply conditioned air toward the upper body of the occupant, so the vent passage is often provided above the air conditioning casing, and in the case of such a layout, heat exchange for cooling Of the cold air generated by passing through the unit, the cold air that passes through the air passage below the heat exchanger for heating and the auxiliary heater flows upward and is then supplied from the vent passage to the upper body of the occupant. will be Since the air passage in which the heat exchanger for heating is arranged is located in the middle of the cold air flowing upward from the lower air passage, part of the cold air flowing upward from the lower air passage The part may stay in the vicinity of the air passage in which the heating heat exchanger is arranged and receive the heat radiated from the heating heat exchanger to raise the temperature. If this happens, the temperature of the blown air will rise, and the cooling performance will deteriorate.

In order to prevent this, there is a method of separating the air passage through which the cold air passes and the heat exchanger for heating, or a shield to prevent the cold air from flowing toward the heat exchanger for heating at maximum cooling. There is a method of providing a damper. However, if the air passage through which the cold air passes is separated from the heat exchanger for heating, there is a problem that the air conditioning casing becomes large. Also, if a shielding damper is provided, a space for disposing the shielding damper is required. Therefore, there is a problem that the air conditioning casing becomes large.

The present invention has been made in view of the above points, and its object is to reduce the internal ventilation resistance while avoiding an increase in the size of the air conditioning casing, and furthermore, to reduce the cooling airflow during maximum cooling. To improve cooling performance by making it difficult to be heated by an exchanger.

In order to achieve the above object, in the present invention, a cool air cut-off section is provided on the downstream side of the heating heat exchanger in the air flow direction to suppress cold air from flowing toward the heating heat exchanger.

A first invention comprises a cooling heat exchanger, a heating heat exchanger disposed on the downstream side of the cooling heat exchanger in the air flow direction, and air that has passed through the cooling heat exchanger, An air mix damper that sets the amount of air passing through the heating heat exchanger, and an air conditioning casing that houses the cooling heat exchanger, the heating heat exchanger, and the air mix damper. In a vehicle air conditioner configured to be able to adjust the temperature of air-conditioning air introduced from the formed air introduction port by the cooling heat exchanger and the heating heat exchanger, the heating heat exchanger: An upper passage through which cold air that has passed through the cooling heat exchanger circulates is formed above the heating heat exchanger of the air conditioning casing, and is disposed in the middle portion in the vertical direction in the air conditioning casing. Below the heat exchanger for heating, a lower passage is formed through which cold air that has passed through the heat exchanger for cooling flows. A vent passage is formed so as to communicate with the downstream side of the upper passage and the downstream side of the lower passage, and a passage resistance member serving as an air flow resistance is provided on the downstream side of the heating heat exchanger in the air flow direction is provided, and the passage resistance member is a frame-shaped body having a pair of side sides, an upper side connecting upper ends of the side sides, and a lower side connecting lower ends of the side sides and the passage resistance member has a cold air cutoff portion that suppresses cold air flowing from the lower passage toward the vent passage toward the heating heat exchanger side, and is provided in the vertical direction of the side portion. It is provided so as to connect the intermediate portions, and extends from one side portion to the other side portion above the cold air blocking portion and is positioned higher toward the downstream side in the air flow direction. and an upper inclined plate portion extending from one side portion to the other side portion below the cold air blocking portion and inclined so as to be positioned downward toward the downstream side in the air flow direction. a first lower slanted plate portion extending from one side portion to the other side portion below the first lower slanted plate portion so as to be positioned downward toward the downstream side in the air flow direction; and an inclined second lower inclined plate portion .

According to this configuration, the air-conditioning air introduced from the air inlet of the air-conditioning casing is cooled by the cooling heat exchanger. After that, the amount of air passing through the heat exchanger for heating is set by the air mix damper, and the set amount of cool air passes through the heat exchanger for heating and is heated. As described above, the conditioned air having the desired temperature is generated.

During maximum cooling, the air mix damper operates so that cold air generated by the cooling heat exchanger does not flow toward the heating heat exchanger. As a result, cold air generated by the cooling heat exchanger flows through the upper passage and the lower passage and into the vent passage, so that the total cross-sectional area of the passage increases and the ventilation resistance decreases.

Also, since the vent passage is formed above the air-conditioning casing, the cold air that has flowed through the lower passage flows upward through the air-conditioning casing. At this time, since the heat exchanger for heating is arranged in the middle, part of the cool air may stay in the vicinity of the passage where the heat exchanger for heating is arranged. In the present invention, since the cold air cut-off portion is provided downstream of the heating heat exchanger in the air flow direction, the cold air flowing upward in the air conditioning casing is less likely to flow toward the heating heat exchanger. . Therefore, the heating by the heat exchanger for heating cold air is suppressed, and the cooling performance is improved.

Furthermore, by providing the cold wind blocking part, it is not necessary to separately dispose a blocking damper, and it is possible to suppress the heating of the cold wind without greatly separating the lower passage and the heating heat exchanger. An increase in the size of the air conditioning casing is avoided.

Further , in some vehicle air conditioners, specifications are set such that an electric heater is arranged downstream of the heat exchanger for heating in the air flow direction, and a specification that the electric heater is not arranged. In specifications where an electric heater is provided, the electric heater acts as air circulation resistance, so the air flow in the air conditioning casing assumes that the electric heater is provided. However, in a specification without an electric heater, the air circulation resistance is reduced, so the air flow is not the same as in a specification with an electric heater, which may adversely affect the air conditioning performance. Conceivable.

In the present invention, in the case of the specification without the electric heater, by providing the passage resistance member instead of the electric heater, the same air flow as the specification with the electric heater is provided. can be done. Then, the passage resistance member can be used to provide the cold air cut-off portion.

Further, since the cold wind blocking portion is provided so as to connect the vertical middle portions of the side portions constituting the frame-shaped main body portion, the cold wind blocking portion increases the rigidity of the main body portion.

A second aspect of the invention is characterized in that the cold wind blocking portion is configured by a plate-like portion provided on the passage resistance member.

According to this configuration, it is possible to easily provide the cold air blocking section.

A third aspect of the invention is characterized in that the cold air blocking portion extends vertically.

According to this configuration, the cold air blocking portion blocks the cold air in a predetermined range in the vertical direction, so that the blocking effect is further enhanced.

A fourth aspect of the invention is characterized in that the cool air cut-off portion extends in a direction intersecting with an air passage direction of the heating heat exchanger.

With this configuration, cold air is less likely to flow toward the heat exchanger for heating, so the blocking effect is further enhanced.

A fifth aspect of the invention is characterized in that the cold air blocking portion is integrally formed with the passage resistance member.

According to this configuration, when providing the cold air blocking portion, an increase in the number of parts is suppressed, and assembling workability is improved.

In a sixth aspect of the invention, the cooling heat exchanger is arranged in front of the vehicle relative to the heating heat exchanger, and the lower passage extends from the vehicle rear side of the cooling heat exchanger to the heating heat exchanger. It is characterized in that the vent passage is formed above the heat exchanger for heating and extends rearward from the heat exchanger.

According to this configuration, the cool air generated by the cooling heat exchanger flows through the lower passage toward the rear side of the vehicle, and then flows upward. That is, the cold air flowing through the lower passage tries to flow upward and toward the heating heat exchanger, but the cold air blocking section is provided downstream of the heating heat exchanger in the air flow direction. By being there, cold air flowing toward the heat exchanger for heating is suppressed.

A seventh aspect of the invention is characterized in that a plurality of the cold air cutoff portions are provided at intervals in the vertical direction.

According to this configuration, since the cold air blocking portions are provided at a plurality of locations, it is possible to block the cold air at a plurality of locations.

An eighth aspect of the invention is characterized in that the cool air cut-off portion is provided so as to face the air passage surface of the heating heat exchanger.

According to this configuration, the cool air cut-off portion is arranged so as to face the air passage surface of the heating heat exchanger, so that the cold air flowing through the lower passage is further directed toward the heating heat exchanger. difficult to flow.

A ninth aspect of the invention is characterized in that the flow of air-conditioning air passing through the heat exchanger for heating is in the front-rear direction of the vehicle, and the cold-air blocking portion is formed so as to extend in the width direction of the vehicle. .

According to this configuration, the cold air is blocked by the cold air blocking portion over a wide range.

In addition, since the cold wind blocking portion is provided so as to connect the side portions of the frame-shaped main body, deformation of the main body can be suppressed using the cold wind blocking portion.

According to the first invention, when passages are provided above and below the heating heat exchanger to reduce airflow resistance, the cold air flows downstream of the heating heat exchanger in the air flow direction. Since the cooling air cut-off portion is provided to suppress the flow of cold air to the exchanger side, it is possible to improve the cooling performance during maximum cooling while avoiding an increase in the size of the air conditioning casing.

In addition , since the passage resistance member provided on the downstream side of the heating heat exchanger in the air flow direction is provided with the cold air cutoff portion, space can be saved.

According to the second aspect of the invention, since the plate-shaped portion provided on the passage resistance member constitutes the cold wind cutoff portion, the cold wind cutoff portion can be easily constructed.

According to the third aspect of the invention, since the cool air blocking portion extends in the vertical direction, the cold air blocking effect can be further enhanced.

According to the fourth aspect of the invention, since the cool air blocking portion extends in the direction intersecting with the air passage direction of the heating heat exchanger, the cold air blocking effect can be further enhanced.

According to the fifth aspect of the invention, since the cold air cut-off portion is integrally formed with the passage resistance member, it is possible to suppress an increase in the number of parts and to improve assembly workability.

According to the sixth invention, when the structure is such that the cold air flowing through the lower passage flows toward the heat exchanger for heating, the effect of blocking cold air by the cold air blocking portion is even more remarkable. becomes.

According to the seventh invention, by providing a plurality of cold air blocking portions, the cold air blocking effect can be further enhanced.

According to the eighth aspect of the invention, since the cold air blocking portion is arranged so as to face the air passage surface of the heating heat exchanger, the cold air blocking effect can be further enhanced.

According to the ninth invention, the direction of flow of the air-conditioning air passing through the heat exchanger for heating is the longitudinal direction of the vehicle, and the cold air cutoff portion extends in the vehicle width direction. It can block cold air .

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view of the vehicle air conditioner which concerns on embodiment of this invention. It is a rear view of a vehicle air conditioner. It is a left view of a vehicle air conditioner. It is a right view of a vehicle air conditioner. FIG. 3 is a sectional view taken along line VV in FIG. 2; It is the perspective view which looked at the passage resistance member from the air flow direction downstream. It is the figure which looked at the passage resistance member from the air flow direction downstream. It is the figure which looked at the passage resistance member from the air flow direction upstream. 4 is a plan view of a passage resistance member; FIG. FIG. 9 is a cross-sectional view taken along the line XX in FIG. 8; FIG. 9 is a cross-sectional view taken along line XI-XI in FIG. 8;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings. It should be noted that the following description of preferred embodiments is essentially merely illustrative, and is not intended to limit the invention, its applications, or its uses.

1 is a view of a vehicle air conditioner 1 according to an embodiment of the present invention as seen from the front side of the vehicle, FIG. 2 is a view of the vehicle air conditioner 1 as seen from the rear side of the vehicle, and FIG. It is the figure which looked at the vehicle air conditioner 1 from the vehicle left side, and FIG. 4 is the figure which looked at the vehicle air conditioner 1 from the vehicle right side.

A vehicle air conditioner 1 is mounted in a vehicle such as an automobile and performs air conditioning of a vehicle interior. As shown in FIG. A container 4, a passage resistance member 5, an upper air mix damper 6, a lower air mix damper 7, a defroster damper 8, a front seat vent damper 9, and a heat damper 10 are provided.

Although not shown, the vehicle air conditioner 1 includes a blower unit. The blower unit has a blower casing and a blower, and is arranged on the passenger seat side of the passenger compartment. The blower includes a sirocco fan and a motor for rotating the sirocco fan. The blower casing is configured so that either the air inside the vehicle or the air outside the vehicle can be selected and introduced as air-conditioning air. 2. The amount of conditioned air blown can be changed by the voltage applied to the motor.

The air conditioning casing 2 and the blower casing are housed inside an instrument panel (not shown) arranged side by side in the vehicle width direction (vehicle left-right direction) and provided at the front end of the vehicle compartment. The air conditioning casing 2 and the blower casing may be configured integrally or may be configured separately. The air-conditioning casing 2 and the blower casing may be configured so as to be arranged in the center in the vehicle width direction without being arranged side by side in the vehicle width direction. Also, the air conditioning casing 2 and the blower casing are connected. Further, in the description of this embodiment, the front side of the vehicle is simply referred to as "front", the rear side of the vehicle is simply referred to as "rear", the left side of the vehicle is simply referred to as "left", and the right side of the vehicle is simply referred to as "right". do.

Although not shown, an engine room in which an engine is mounted is provided in front of the compartment of the vehicle. The engine room is provided with a compressor, a condenser, and the like that constitute a refrigeration cycle. Also, a motor for driving the vehicle may be mounted instead of the engine.

(Configuration of vehicle air conditioner)
The air conditioning casing 2 is configured, for example, by combining a plurality of resin members, and includes a cooling heat exchanger 3, a heating heat exchanger 4, a passage resistance member 5, an upper air mix damper 6, and a lower It is a member that accommodates the air mix damper 7 , the defroster damper 8 , the front seat vent damper 9 , and the heat damper 10 . The split structure of the air-conditioning casing 2 is not particularly limited, but can be, for example, in the front-back direction or in the up-down direction. In this embodiment, as shown in FIGS. 1 to 4, the air conditioning casing 2 is divided into a front casing member 2A and a rear casing member 2B. 2B are divided in the horizontal direction. Therefore, the air conditioning casing 2 is constructed by combining four members.

As shown in FIG. 4, an air inlet port 2a is formed in the right side wall portion of the front portion of the air-conditioning casing 2 for introducing the air-conditioning air sent from the blower unit into the air-conditioning casing 2. As shown in FIG. . The vehicle air conditioner 1 is configured such that the temperature of the air-conditioning air introduced from the air inlet 2 a can be adjusted by the cooling heat exchanger 3 , the heating heat exchanger 4 and the passage resistance member 5 . Although details will be described later, of the air that has passed through the cooling heat exchanger 3, the amount of air that passes through the heating heat exchanger 4 and the passage resistance member 5 is reduced by the upper air mix damper 6 and the lower air mix damper 7. set.

An intermediate duct portion 2</b>C is formed integrally with the periphery of the air inlet 2 a in the air conditioning casing 2 . As shown in FIG. 2, the intermediate duct 2C is formed to protrude to the right. A blower casing is connected to the right end of the intermediate duct 2C, and air for air conditioning blown from the blower casing flows into the air inlet 2a via the intermediate duct 2C. Although the air inlet 2a is formed on the side where the blower casing is arranged, it may be formed on either the left side wall portion or the right side wall portion of the front portion of the air conditioning casing 2. FIG.

As shown in FIG. 5, the front side of the upper wall portion of the air conditioning casing 2 is formed with a defroster outlet 2b for supplying conditioned air toward the inner surface of the windshield of the vehicle. The defroster outlet 2b is elongated in the left-right direction. A defroster duct (not shown) is connected to the defroster outlet 2b. The downstream end of the defroster duct is connected to a defroster port (not shown) formed at the front end of the instrument panel.

A front-seat vent outlet for supplying air-conditioned air toward the upper body of a passenger sitting in the front seat (front seat occupant) is provided behind the defroster outlet 2b in the upper wall of the air-conditioning casing 2. 2c is formed. A vent duct (not shown) is connected to the front seat vent outlet 2c. The downstream end of the vent duct has a center vent port (not shown) formed substantially at the center of the instrument panel in the vehicle width direction and side vent ports (not shown) formed on both sides of the instrument panel in the vehicle width direction. connected). The defroster outlet 2b and the front seat vent outlet 2c are arranged side by side in the longitudinal direction.

A heat outlet 2d is formed on the lower side of the rear wall portion of the air-conditioning casing 2 for supplying air-conditioned air toward the vicinity of the feet of the occupant. A heat duct (not shown) is connected to the heat outlet 2d. The heat duct consists of a front heat duct that extends to the vicinity of the feet of the front seat occupants and a rear heat duct that extends to the vicinity of the feet of the rear seat occupants. It is possible. Incidentally, the heat duct may be composed only of the front heat duct. Also, a plurality of heat outlets 2d can be provided.

Inside the air conditioning casing 2 are an air introduction passage R1, an upper warm air generation passage R2a, a lower warm air generation passage R2b, a defroster passage R3, a front seat vent passage R4, a heat passage R5, and an upper side. A passage R6a and a lower passage R6b are formed. The air introduction passage R1 is formed inside the air conditioning casing 2 at the front portion. The upstream end of the air introduction passage R1 is connected to the air introduction port 2a. The air introduction passage R1 extends rearward from the air introduction port 2a. A cooling heat exchanger 3 is arranged at the downstream end of the air introduction passage R1.

The cooling heat exchanger 3 is for cooling the air-conditioning air flowing through the air introduction passage R1. The cooling heat exchanger 3 is positioned on the front side inside the air conditioning casing 2, and is oriented such that its air passage surface extends in the vertical direction. The upper and lower portions of the cooling heat exchanger 3 are held by the air conditioning casing 2 .

In this embodiment, the cooling heat exchanger 3 is composed of an evaporator (refrigerant evaporator) having a header tank, tubes and fins (not shown). An evaporator is a component of a conventionally well-known refrigeration cycle apparatus. The air-conditioning air is cooled by heat exchange between the low-temperature refrigerant flowing inside the cooling heat exchanger 3 and the air-conditioning air passing outside the cooling heat exchanger 3 . Condensed water generated on the surface of the cooling heat exchanger 3 at this time is discharged to the outside of the air conditioning casing 2 from the drain pipe portion 2f shown in FIGS. The air introduction passage R1 is also a cold air generation passage for generating cold air.

The heating heat exchanger 4 is disposed in the vertical middle portion of the air conditioning casing 2 on the downstream side (rear side) of the cooling heat exchanger 3 in the air flow direction. Therefore, the cooling heat exchanger 3 is arranged ahead of the heating heat exchanger 4 . The heating heat exchanger 4 is arranged rearwardly away from the cooling heat exchanger 3 , and a space is provided between the heating heat exchanger 4 and the cooling heat exchanger 3 . The heating heat exchanger 4 is oriented such that its air passage surface extends in the vertical direction.

Between the heating heat exchanger 4 and the cooling heat exchanger 3, a partition wall portion 21 is provided so as to extend in the vertical direction. An upper warm air generation passage R2a and a lower warm air generation passage R2b are formed on the rear side of the partition wall portion 21 . The upper hot air generation passage R2a and the lower hot air generation passage R2b are formed in the middle portion in the front-rear direction and the middle portion in the vertical direction inside the air conditioning casing 2. The lower warm air generation passage R2b is positioned below. The upper hot air generation passage R2a and the lower warm air generation passage R2b are formed to extend rearward from the partition wall portion 21 . Although not shown, a partition plate extending in the front-rear direction may be provided between the upper hot air generation passage R2a and the lower warm air generation passage R2b.

Heat exchangers 4 for heating are arranged in the upper warm air generation passage R2a and the lower warm air generation passage R2b. A substantially upper half portion of the heating heat exchanger 4 is arranged in the upper warm air generation passage R2a, and a substantially lower half portion of the heating heat exchanger 4 is arranged in the lower warm air generation passage R2b. The heating heat exchanger 4 is composed of a heater core having a header tank, tubes and fins (not shown). Engine cooling water circulating in an engine (not shown) mounted on a vehicle is supplied to the heating heat exchanger 4 through a supply pipe 4a (shown in FIGS. 1 and 3). there is The engine cooling water supplied to the heating heat exchanger 4 exchanges heat with the air-conditioning air passing outside the heating heat exchanger 4, thereby heating the air-conditioning air. The engine cooling water supplied to the heating heat exchanger 4 is returned to the engine through a discharge pipe 4b (shown in FIGS. 1 and 3). The front sides of the supply pipe 4a and the discharge pipe 4b are held by a bracket 2g (shown in FIGS. 1 and 3) provided in the front portion of the air conditioning casing 2. As shown in FIG. The upper and lower portions of the heating heat exchanger 4 are held by the air conditioning casing 2 . The longitudinal dimension of the heating heat exchanger 4 (the dimension in the passage direction of the outside air) is set shorter than the longitudinal dimension of the cooling heat exchanger 3 . The heating heat exchanger 4 may be composed of a condenser of a refrigeration cycle.

Further, the passage resistance member 5 is disposed in the vertical middle portion of the air conditioning casing 2 on the downstream side (rear side) of the heating heat exchanger 4 in the air flow direction. The passage resistance member 5 is arranged rearwardly away from the heating heat exchanger 4 , and a small space is formed between the heating heat exchanger 4 and the passage resistance member 5 . The space between the heating heat exchanger 4 and the passage resistance member 5 is set narrower than the space between the heating heat exchanger 4 and the cooling heat exchanger 3 .

The passage resistance member 5 is positioned in the upper warm air generation passage R2a and the lower warm air generation passage R2b. The passage resistance member 5 is oriented such that its air passage surface extends in the vertical direction. A substantially upper half of the passage resistance member 5 is arranged in the upper warm air generation passage R2a, and a substantially lower half of the passage resistance member 5 is arranged in the lower warm air generation passage R2b. The upper portion of the passage resistance member 5 is located below the upper portion of the heating heat exchanger 4 . Further, the longitudinal dimension of the passage resistance member 5 (the dimension in the passage direction of the outside air) is set shorter than the longitudinal dimension of the heating heat exchanger 4 . Details of the passage resistance member 5 will be described later.

The vertical dimensions of the heating heat exchanger 4 and the passage resistance member 5 are set shorter than the vertical dimensions of the cooling heat exchanger 3, and the heating heat exchanger 4 is provided inside the air conditioning casing 2. A space is formed above the passage resistance member 5 and a space is also formed below the heating heat exchanger 4 and the passage resistance member 5 . These spaces serve as passages, and more specifically, above the heating heat exchanger 4 and the passage resistance member 5 of the air conditioning casing 2, there is an upper passage through which cold air that has passed through the cooling heat exchanger 3 flows. R6a is formed, and below the heating heat exchanger 4 and the passage resistance member 5 of the air-conditioning casing 2, a lower passage R6b is formed through which cold air that has passed through the cooling heat exchanger 3 flows. there is

The upstream end of the upper passage R6a is arranged to face the upper side of the surface of the cooling heat exchanger 3 on the downstream side in the air flow direction, and communicates with the upper portion of the downstream end of the air introduction passage R1. The upper passage R6a extends upward beyond the upper portions of the heating heat exchanger 4 and the passage resistance member 5 . Further, the middle portion of the upper passage R6a can communicate with the upstream end portion of the upper warm air generation passage R2a. An upper air mix damper 6 is provided between the middle portion of the upper passage R6a and the upstream end portion of the upper warm air generation passage R2a.

The upper air mix damper 6 is for adjusting the amount of air flowing through the upper hot air generation passage R2a by changing the degree of opening of the upstream end of the upper warm air generation passage R2a. The upper air mix damper 6 includes a laterally extending rotating shaft 6a and a blocking plate portion 6b radially extending from the rotating shaft 6a. Left and right end portions of the rotary shaft 6a are rotatably supported with respect to left and right side wall portions of the air conditioning casing 2. As shown in FIG. The rotating shaft 6a is arranged near the upper portion of the heat exchanger 3 for heating. The closing plate portion 6b rotates upward from the fully closed state (shown in FIG. 5) of the upstream end of the upper hot air generation passage R2a to fully open the upstream end of the upper warm air generation passage R2a. (not shown) and can be stopped at any position between the fully closed state and the fully opened state. When the upper air mix damper 6 fully opens the upstream end of the upper hot air generation passage R2a, the downstream side of the upper passage R6a is blocked by the blocking plate portion 6b, and the cold air in the upper passage R6a flows into the upper hot air generation passage R2a. It will be. This is the full hot state. Further, when the upper air mix damper 6 fully closes the upstream end of the upper hot air generation passage R2a, the downstream side of the upper passage R6a is fully opened by the closing plate portion 6b, and the cold air in the upper passage R6a flows into the upper warm air generation passage. It will not flow into R2a. This is a full cold state.

In addition, the upstream end of the lower passage R6b is arranged to face the lower side of the surface of the cooling heat exchanger 3 on the downstream side in the air flow direction, and the lower portion of the downstream end of the air introduction passage R1. are in communication. Therefore, the cool air flowing out of the air introduction passage R1 flows into both the upper passage R6a and the lower passage R6b. The lower passage R6b extends from the rear side of the cooling heat exchanger 3 toward the rear side of the heating heat exchanger 4 and the passage resistance member 5 through below the heating heat exchanger 4 and the passage resistance member 5. , and reaches the lower rear side of the air-conditioning casing 2 . The lower passage R6b extends upward while curving from the rear side of the lower portion of the air conditioning casing 2, and extends along the rear wall portion of the air conditioning casing 2 until it reaches the upper portion of the air conditioning casing 2. As shown in FIG.

The middle portion of the lower passage R6b can communicate with the upstream end portion of the lower warm air generation passage R2b. A lower air mix damper 7 is arranged between the middle portion of the lower passage R6b and the upstream end portion of the lower warm air generation passage R2b.

The lower air mix damper 7 is for adjusting the amount of air flowing through the lower hot air generation passage R2b by changing the degree of opening of the upstream end of the lower hot air generation passage R2b. The lower air mix damper 7 includes a laterally extending rotating shaft 7a and a closing plate portion 7b radially extending from the rotating shaft 7a. Both left and right end portions of the rotating shaft 7a are spaced downward from the rotating shaft 6a of the upper air mix damper 6, and are rotatably supported by the left and right side wall portions of the air conditioning casing 2. As shown in FIG. The rotating shaft 7a is arranged in the vicinity of the lower portion of the heat exchanger 3 for heating. The closing plate portion 7b rotates downward from the fully closed state (shown in FIG. 5) of the upstream end of the lower hot air generation passage R2b to fully open the upstream end of the lower warm air generation passage R2b. (not shown), and can be stopped at any position between the fully closed state and the fully opened state. When the lower air mix damper 7 fully opens the upstream end of the lower hot air generation passage R2b, the lower passage R6b is blocked by the closing plate portion 7b, and the cold air from the lower passage R6b passes through the lower hot air generation passage R2b. will flow into This is the full hot state. Further, when the lower air mix damper 7 fully closes the upstream end of the lower warm air generating passage R2b, the lower passage R6b is fully opened by the closing plate portion 7b, and the cold air in the lower passage R6b passes through the lower warm air. The air does not flow into the wind generation passage R2b. This is the full cold state.

The upper air mix damper 6 and the lower air mix damper 7 can be interlocked by using a well-known link mechanism, and are driven by, for example, an air mix actuator. The air mix actuator is connected to an air conditioning control device (not shown). The air conditioning control device calculates the opening degrees of the upper air mix damper 6 and the lower air mix damper 7 based on the temperature set by the occupant, the outside temperature of the vehicle, the temperature inside the vehicle, and the like. The air mix actuator is controlled so that the damper 7 reaches that opening.

When the opening degrees of the upper hot air generation passage R2a and the lower warm air generation passage R2b are increased by the air mix actuator, the amount of cool air flowing into the upper warm air generation passage R2a and the lower warm air generation passage R2b increases. The amount of warm air generated will increase, and the temperature of the conditioned air will rise. On the other hand, when the opening degrees of the upper hot air generation passage R2a and the lower warm air generation passage R2b are reduced by the air mix actuator, the amount of cool air flowing into the upper warm air generation passage R2a and the lower warm air generation passage R2b decreases. Therefore, the amount of warm air generated decreases, and the temperature of the conditioned air decreases. By rotating the upper air mix damper 6 and the lower air mix damper 7, the temperature of the conditioned air can be adjusted to the target temperature.

The conditioned air generated as described above forms conditioned air inside the conditioned casing 2 . The conditioned air is only warm air generated by the heat exchanger 4 for heating when it is full hot, and only cold air generated by the heat exchanger 3 for cooling when it is full cold. At the time of , warm air and cold air are mixed.

The defroster passage R3 is formed on the upper side inside the air-conditioning casing 2, and the air-conditioning air flows therein. A downstream end of the defroster passage R3 is connected to the defroster outlet 2b. The defroster passage R3 communicates with the vehicle compartment via the defroster outlet 2b.

The defroster damper 8 is for opening and closing the defroster passage R3, and includes a laterally extending rotating shaft 8a and blocking plate portions 8b, 8b radially extending from the rotating shaft 8a. Left and right end portions of the rotary shaft 8a are rotatably supported with respect to left and right side wall portions of the air conditioning casing 2 . The rotating shaft 8a is arranged in the front-rear direction intermediate portion of the defroster passage R3. By rotating the defroster damper 8 around the rotating shaft 8a, the defroster passage R3 is changed from the fully closed state (shown in FIG. 5) to the fully opened state (not shown) and vice versa by the blocking plate portions 8b, 8b. It can be switched, and can also be switched to the intermediate opening.

A front seat vent passage R4 for supplying air-conditioned air to the upper half of the occupant is formed on the upper side of the air conditioning casing 2 so as to communicate with the downstream side of the upper passage R6a and the downstream side of the lower passage R6b. That is, the front seat vent passage R4 is formed on the upper side inside the air-conditioning casing 2, behind the defroster passage R3, so that the air-conditioning air flows inside. The front seat vent passage R4 is formed above the heating heat exchanger 4 and forward of the passage resistance member 5. As shown in FIG. A downstream end of the front seat vent passage R4 is connected to the front seat vent outlet 2c. The front seat vent passage R4 communicates with the vehicle compartment via the front seat vent outlet 2c.

The front seat vent damper 9 is for opening and closing the front seat vent passage R4, and includes a pivot shaft 9a extending in the left-right direction and a blocking plate portion 9b integrated with the pivot shaft 9a. . Left and right end portions of the rotary shaft 9a are rotatably supported with respect to left and right side wall portions of the air conditioning casing 2 . The rotating shaft 9a is arranged near the front side. By rotating the front seat vent damper 9 around the rotating shaft 9a, the front seat vent passage R4 is changed from a fully open state (shown in FIG. 5) to a fully closed state (not shown) by the blocking plate portion 9b, and It can also be switched in the opposite direction.

The heat passage R5 is formed inside the air-conditioning casing 2 below the front seat vent passage R4, so that the air-conditioning air flows inside. A downstream end of the heat passage R5 is connected to the heat outlet 2d. The heat passage R5 communicates with the vehicle compartment via the heat outlet 2d.

The heat damper 10 is for opening and closing the heat passage R5, and includes a rotating shaft 10a extending in the left-right direction and blocking plate portions 10b, 10b extending radially from the rotating shaft 10a. Left and right end portions of the rotary shaft 10a are rotatably supported by left and right side wall portions of the air conditioning casing 2. As shown in FIG. The rotating shaft 10a is arranged near the upper portion of the upstream end of the heat passage R5. When the heat damper 10 rotates around the rotation shaft 10a, the heat passage R5 is fully closed (shown in FIG. 5) by the blocking plate portion 10b positioned below the rotation shaft 10a. When the heat damper 10 is rotated from this fully closed state until the blocking plate portions 10b, 10b extend in the front-rear direction, the heat damper 10 is switched to a fully open state (not shown). By rotating the heat damper 10 in the opposite direction, the fully open state can be changed to the fully closed state. As shown in FIG. 5, when the heat damper 10 is in the fully closed state, the blocking plate portion 10b extends vertically. On the other hand, when the heat damper 10 is in the fully open state, the closing plate portion 10b extends in the front-rear direction. As a result, the air-conditioning air below the heat damper 10 does not flow above the heat damper 10 .

Further, the defroster damper 8, the front seat vent damper 9, and the heat damper 10 can be interlocked by using a well-known link mechanism, and are driven by, for example, an actuator for switching the blowing direction. The blowing direction switching actuator is connected to an air conditioning control device (not shown). The air conditioning control device calculates the opening degrees of the defroster damper 8, the front seat vent damper 9, and the heat damper 10 based on the temperature set by the occupant, the temperature outside the vehicle, the temperature inside the vehicle, and the like. The blowout direction switching actuator is controlled so that the heat damper 10 reaches that opening. Thereby, for example, it is possible to switch to a vent mode, a defroster mode, a heat mode, a bi-level mode, a defheat mode, or the like.

(Configuration of passage resistance member 5)
The passage resistance member 5 shown in FIG. 6 is made of a resin member and arranged instead of the electric heater. That is, in the vehicle air conditioner 1, there are cases where specifications are set such that an electric heater is arranged downstream of the heating heat exchanger 4 in the air flow direction and specifications are not arranged. Although not shown, the electric heater includes heating elements (PTC elements) that generate heat when energized, and each heating element is connected to a lead wire for supplying electric power. Electric power is supplied to each heating element from a vehicle battery or the like through a lead wire. The amount of power to be supplied and the ON/OFF switching of the power supply are performed by an air conditioning control device. Since this electric heater functions as an auxiliary heater, the auxiliary heater may not be necessary in some cases.

In the specifications where an electric heater is provided, the electric heater acts as air flow resistance in the upper hot air generation passage R2a and the lower hot air generation passage R2b, so it is assumed that the electric heater is provided. air flow in the air conditioning casing 2. However, in the specification without the electric heater, the flow resistance of the air in the upper hot air generation passage R2a and the lower warm air generation passage R2b is reduced. It is conceivable that the flow of air will not be smooth and that it will adversely affect the air conditioning performance.

In this embodiment, when the specification is not provided with an electric heater, by providing the passage resistance member 5 instead of the electric heater, the same air flow as the specification with the electric heater is provided. can do. Then, as will be described below, the passage resistance member 5 can be used to provide the cold air blocking portion 62 .

The passage resistance member 5 includes a frame-shaped body portion 51 and a cold wind blocking portion 62 , and the cold wind blocking portion 62 is formed integrally with the body portion 51 . The body portion 51 includes a left side portion 52 and a right side portion 53 (a pair of side portions), an upper side portion 54 connecting the upper ends of the left side portion 52 and the right side portion 53, and the left side portion 52 and the right side portion. It has a lower side portion 55 that connects the lower end portions of the portions 53 . The left side portion 52 is arranged to extend vertically in the vicinity of the left side surfaces of the upper hot air generation passage R2a and the lower warm air generation passage R2b, and is fixed to the left side wall portion of the air conditioning casing 2 . The right side portion 53 is arranged to extend vertically in the vicinity of the right side surfaces of the upper hot air generation passage R2a and the lower warm air generation passage R2b, and is fixed to the right side wall portion of the air conditioning casing 2 . The left side portion 52 and the right side portion 53 are substantially parallel to each other.

The upper side portion 54 is arranged to extend in the left-right direction in the vicinity of the upper surface of the upper warm air generation passage R2a. The lower side portion 55 is arranged to extend in the left-right direction in the vicinity of the lower surface of the lower warm air generation passage R2b. The upper side portion 54 and the lower side portion 55 are substantially parallel to each other. Therefore, the left side portion 52, the right side portion 53, the upper side portion 54, and the lower side portion 55 constitute a substantially rectangular frame shape.

A plurality of vertical plate portions 56 are provided on the body portion 51 at intervals in the left-right direction. The vertical plate portion 56 extends in the vertical direction as well as in the front-rear direction, and is formed along the flow direction of the air that has passed through the heating heat exchanger 4 . The upper end portion of the vertical plate portion 56 is connected to the lower surface of the upper side portion 54 , and the lower end portion of the vertical plate portion 56 is connected to the upper surface of the lower side portion 55 .

Between the vertical plate portions 56 on the lower surface of the upper side portion 54, an upper rib portion 54a is formed that protrudes downward and extends in the left-right direction. Between the vertical plate portions 56 on the upper surface of the lower side portion 55, a lower rib portion 55a is formed that protrudes upward and extends in the left-right direction.

As shown in FIGS. 10 and 11 , an upper inclined plate portion 57 is provided on the upper side of the body portion 51 . The upper inclined plate portion 57 extends in the left-right direction from the left side portion 52 to the right side portion 53 and is continuous with the vertical plate portion 56 in the middle. The upper inclined plate portion 57 is inclined downward toward the front. The air flowing rearward is guided upward by the upper inclined plate portion 57 .

A first intermediate plate portion 58 is provided below the upper inclined plate portion 57 of the main body portion 51 . The first intermediate plate portion 58 extends in the left-right direction from the left side portion 52 to the right side portion 53 and is continuous with the vertical plate portion 56 in the middle. A gap is formed between the first intermediate plate portion 58 and the upper inclined plate portion 57 to allow air to flow. The first intermediate plate portion 58 extends substantially horizontally.

A second intermediate plate portion 59 is provided below the first intermediate plate portion 58 of the body portion 51 . The second intermediate plate portion 59 extends in the left-right direction from the left side portion 52 to the right side portion 53 and is continuous with the vertical plate portion 56 in the middle. A gap is also formed between the second intermediate plate portion 59 and the first intermediate plate portion 58 for circulating air. The second intermediate plate portion 59 extends substantially parallel to the first intermediate plate portion 58 .

A first lower inclined plate portion 60 is provided below the second intermediate plate portion 59 of the body portion 51 . The first lower inclined plate portion 60 extends in the left-right direction from the left side portion 52 to the right side portion 53 and is continuous with the vertical plate portion 56 in the middle. A gap is also formed between the first lower inclined plate portion 60 and the second intermediate plate portion 59 for circulating air. The first lower sloped plate portion 60 slopes upward toward the front. As shown in FIG. 10, the rear end portion of the first lower inclined plate portion 60 is formed with a lower protruding plate portion 60a that protrudes downward and extends in the left-right direction.

A second lower inclined plate portion 61 is provided below the first lower inclined plate portion 60 of the body portion 51 . The second lower inclined plate portion 61 extends in the left-right direction from the left side portion 52 to the right side portion 53 and is continuous with the vertical plate portion 56 in the middle. A gap is also formed between the second lower inclined plate portion 61 and the first lower inclined plate portion 60 for circulating air. The second lower inclined plate portion 61 extends substantially parallel to the first lower inclined plate portion 60 . Air flowing rearward is guided downward by the first lower sloping plate portion 60 and the second lower sloping plate portion 61 .

The cold air blocking portion 62 provided in the passage resistance member 5 is a portion for suppressing the cold air flowing from the lower passage R6b toward the vent passage R4 from flowing toward the heating heat exchanger 4, and is plate-shaped. It is composed of parts. The cold air blocking portion 62 extends in the left-right direction (vehicle width direction) from the vertical intermediate portion of the left side portion 52 to the vertical intermediate portion of the right side portion 53 , and the vertical intermediate portions of the side portions 52 and 53 extend in the horizontal direction. are connected. Also, the middle portion of the cool air blocking portion 62 is continuous with the vertical plate portion 56 .

The cool air blocking part 62 also extends in the vertical direction and is provided so as to face the air passage surface of the heating heat exchanger 4 . As a result, the cool air blocking portion 62 extends in a direction intersecting with the air passage direction of the heating heat exchanger 4 .

The cold air blocking portion 62 is continuous with the rear end portion of the first intermediate plate portion 58 and is deviated rearward from the central portion in the front-rear direction inside the main body portion 51 . The lower end of the cold air blocking portion 62 is separated upward from the upper surface of the second intermediate plate portion 59 by a predetermined distance, and air passes between the lower end of the cold air blocking portion 62 and the upper surface of the second intermediate plate portion 59. It is designed to

An upper protruding plate portion 62 a is formed on the upper side of the cold air blocking portion 62 so as to protrude upward from the first intermediate plate portion 58 and extend in the left-right direction. The upper end portion of the upper protruding plate portion 62a and the lower surface of the upper inclined plate portion 57 are separated in the vertical direction so that air can pass between them.

Since the lower protruding plate portion 60a extends in the same manner as the cold wind blocking portion 62, the cold wind blocking portion suppresses the cold wind flowing from the lower passage R6b toward the vent passage R4 from flowing toward the heating heat exchanger 4. function as As a result, a plurality of cool air cutoff portions are provided at intervals in the vertical direction.

(Operation of Vehicle Air Conditioner 1)
Next, the operation of the vehicle air conditioner 1 configured as described above will be described. First, the vent mode shown in FIG. 5 will be described. In this vent mode, the defroster passage R3 and the heat passage R5 are closed and the front seat vent passage R4 is opened. In FIG. 5, since the upper air mix damper 6 and the lower air mix damper 7 fully close the upper warm air generation passage R2a and the lower warm air generation passage R2b, the cool air that has passed through the cooling heat exchanger 3 flows through the upper passage R6a and the lower passage R6b. By providing the upper passage R6a and the lower passage R6b in this way, the cross-sectional area of the passage can be increased, and the ventilation resistance can be reduced.

Since the front seat vent passage R4 is open, the cool air flows into the front seat vent passage R4 and is supplied from the front seat vent outlet 2c to each part of the passenger compartment.

If the upper air mix damper 6 and the lower air mix damper 7 half-open the upper hot air generation passage R2a and the lower warm air generation passage R2b, the upper warm air generation passage R2a and the lower warm air generation passage R2a are opened. Hot air is generated by R2b, and the warm air and cold air are mixed to form conditioned air, which is supplied to each part of the vehicle compartment.

Next, the heat mode will be explained. This heat mode is a mode in which the front seat vent passage R4 is closed and the defroster passage R3 and the heat passage R5 are opened. When the upper air mix damper 6 and the lower air mix damper 7 fully open the upper hot air generation passage R2a and the lower hot air generation passage R2b, the cool air that has passed through the cooling heat exchanger 3 flows through the upper warm air generation passage R2a. and heated by the heating heat exchanger 4 while flowing through the lower hot air generation passage R2b. The hot air that has flowed through the upper hot air generation passage R2a mainly flows upward into the defroster passage R3 and is supplied from the defroster outlet 2b into the vehicle compartment. The hot air that has flowed through the lower hot air generation passage R2b mainly flows toward the heat passage R5 and is supplied from the heat outlet 2d into the vehicle compartment.

Next, the defroster mode will be described. This defroster mode is a mode in which the defroster passage R3 is opened and the front seat vent passage R4 and the heat passage R5 are closed. When the upper air mix damper 6 and the lower air mix damper 7 fully open the upper hot air generation passage R2a and the lower hot air generation passage R2b, the cool air that has passed through the cooling heat exchanger 3 flows through the upper warm air generation passage R2a. and heated by the heating heat exchanger 4 while flowing through the lower hot air generation passage R2b. The warm air that has flowed through the upper hot air generation passage R2a and the lower warm air generation passage R2b mainly flows upward, flows into the defroster passage R3, and is supplied from the defroster outlet 2b to the vehicle compartment.

(Action and effect of the embodiment)
According to the vehicle air conditioner 1 according to this embodiment, during maximum cooling, the upper air mix damper 6 and the upper air mix damper 6 and the The lower air mix damper 7 can be activated. As a result, the cold air generated by the cooling heat exchanger 3 flows through the upper passage R6a and the lower passage R6b and then flows into the vent passage R4, so that the total cross-sectional area of the passages increases and the ventilation resistance decreases. .

In addition, since the vent passage R4 is formed above the air conditioning casing 2, the cold air flowing through the lower passage R6b flows upward inside the air conditioning casing 2. As shown in FIG. At this time, since the heating heat exchanger 4 is arranged in the middle, part of the cool air may stay in the vicinity of the passage where the heating heat exchanger 4 is arranged. In this embodiment, since the passage resistance member 5 located downstream of the heating heat exchanger 4 in the air flow direction is provided with the cold air blocking portion 62, the cold air flowing upward in the air conditioning casing 2 is heated. It becomes difficult to flow toward the heat exchanger 4 side. Therefore, the heating by the heat exchanger 4 for heating cold air is suppressed, and the cooling performance is improved.

Furthermore, since the cold air blocking part 62 is provided in the passage resistance member 5, it is not necessary to separately dispose a blocking damper, and the cooling air can be heated without separating the lower passage R6b and the heating heat exchanger 4. can be suppressed, and an increase in the size of the air conditioning casing 2 can be avoided.

In addition, since the passage resistance member 5 is provided with cold air blocking portions at a plurality of locations, the cold air can be blocked at the plurality of locations of the passage resistance member 5 .

The above-described embodiments are merely examples in all respects and should not be construed in a restrictive manner. Furthermore, all modifications and changes within the equivalent range of claims are within the scope of the present invention.

For example, the cold air blocking portion 62 may have a flat plate shape or a curved shape.

INDUSTRIAL APPLICABILITY As described above, the vehicle air conditioner according to the present invention can be used, for example, as an air conditioner mounted on an automobile or the like.

1 Vehicle Air Conditioner 2 Air Conditioning Casing 2a Air Inlet 3 Cooling Heat Exchanger 4 Heating Heat Exchanger 5 Passage Resistance Member 6 Upper Air Mix Damper 7 Lower Air Mix Damper 51 Main Body 52 Left Side 53 Right Side 54 Upper side portion 55 Lower side portion 62 Cold air blocking portion R4 Vent passage R6a Upper passage R6b Lower passage

Claims (9)

a cooling heat exchanger;
a heating heat exchanger disposed on the downstream side of the cooling heat exchanger in the air flow direction;
an air mix damper that sets the amount of air passing through the heating heat exchanger out of the air that has passed through the cooling heat exchanger;
An air conditioning casing housing the cooling heat exchanger, the heating heat exchanger and the air mix damper,
In a vehicle air conditioner configured so that the temperature of air-conditioning air introduced from an air inlet formed in the air-conditioning casing can be adjusted by the cooling heat exchanger and the heating heat exchanger,
The heat exchanger for heating is arranged in the middle part in the vertical direction in the air conditioning casing,
Above the heating heat exchanger of the air-conditioning casing, an upper passage is formed through which cool air that has passed through the cooling heat exchanger flows,
Below the heating heat exchanger of the air-conditioning casing, a lower passage is formed through which cool air that has passed through the cooling heat exchanger flows,
A vent passage for supplying air-conditioned air to the upper body of the occupant is formed on the upper side of the air conditioning casing so as to communicate with the downstream side of the upper passage and the downstream side of the lower passage,
A passage resistance member serving as an air flow resistance is provided on the downstream side of the heating heat exchanger in the air flow direction,
The passage resistance member has a frame-shaped main body having a pair of side sides, an upper side connecting upper ends of the side sides, and a lower side connecting lower ends of the side sides,
The passage resistance member has a cold air cut-off portion that suppresses cold air flowing from the lower passage toward the vent passage toward the heating heat exchanger, and is provided between the vertical intermediate portions of the side portions. It is provided to connect ,
The main body portion includes an upper inclined plate portion extending from one side portion to the other side portion above the cold air blocking portion and inclined upward toward the downstream side in the air flow direction. a first lower inclined plate portion extending from one side portion to the other side portion below the cold air blocking portion and inclined so as to be positioned downward toward the downstream side in the air flow direction; a second lower slanted plate portion extending from one side portion to the other side portion below the first lower slanted plate portion and inclined downward toward the downstream side in the air flow direction; A vehicle air conditioner characterized by being provided with . In the vehicle air conditioner according to claim 1 ,
The air conditioner for a vehicle, wherein the cold air cut-off portion is composed of a plate-like portion provided on the passage resistance member. In the vehicle air conditioner according to claim 2 ,
The air conditioner for a vehicle, wherein the cold air blocking portion extends vertically. In the vehicle air conditioner according to claim 3 ,
The air conditioner for a vehicle, wherein the cool air cutoff portion extends in a direction crossing an air passage direction of the heat exchanger for heating. In the vehicle air conditioner according to any one of claims 1 to 4 ,
The air conditioner for a vehicle, wherein the cold air blocking portion is integrally formed with the passage resistance member. In the vehicle air conditioner according to any one of claims 1 to 5 ,
The cooling heat exchanger is arranged in front of the vehicle from the heating heat exchanger,
The lower passage extends from the vehicle rear side of the cooling heat exchanger toward the rear side of the heating heat exchanger,
A vehicle air conditioner, wherein the vent passage is formed above the heating heat exchanger. In the vehicle air conditioner according to any one of claims 1 to 6 ,
An air conditioner for a vehicle, wherein a plurality of the cool air cutoff portions are provided at intervals in the vertical direction. In the vehicle air conditioner according to any one of claims 1 to 7 ,
An air conditioner for a vehicle, wherein the cool air cut-off portion is provided so as to face an air passage surface of the heat exchanger for heating. In the vehicle air conditioner according to any one of claims 1 to 8 ,
The flow of the air-conditioning air passing through the heating heat exchanger is in the longitudinal direction of the vehicle,
The air conditioner for a vehicle, wherein the cold air blocking portion is formed to extend in a vehicle width direction.

Images