Vehicle-mounted air conditioning box and automobile air conditioner

Abstract

The application provides a vehicle-mounted air conditioner box and a vehicle air conditioner. The air conditioner box comprises an air inlet box, a blower and a distribution box, the blower and the distribution box are provided with an indoor heater and an indoor cooler, the indoor heater and the indoor cooler are arranged at a preset angle, the distribution box comprises a mixed air chamber, the air outlet of the indoor heater and the air outlet of the indoor cooler are communicated with the mixed air chamber, the air inlet side of the indoor heater and the air inlet side of the indoor cooler are provided with a plurality of partition pieces and a first air door, the partition pieces comprise a first partition piece, a second partition piece, a third partition piece and a fourth partition piece, when the first air door is at a first position, the air inlet of the indoor heater is separated from the air outlet of the blower, when the first air door is at a second position, the air inlet of the indoor heater and the air inlet of the indoor cooler are communicated with the air outlet of the blower, and when the first air door is at a third position, the air inlet of the indoor heater is separated from the air outlet of the blower. The application can reduce the energy consumption of the air conditioner box.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile air conditioning, in particular to a vehicle-mounted air conditioning box and an automobile air conditioner. BACKGROUND

[0002] The vehicle-mounted air conditioning box is a core component of the automobile air conditioner, responsible for adjusting the temperature, humidity and air quality in the vehicle. When the vehicle-mounted air conditioning system executes temperature adjustment mode, etc., the proportion of air flowing through the cold source and the heat source needs to be controlled to achieve the required temperature, and finally the mixed cold and hot air is sent to the passenger compartment through different air outlets. The cold source in the vehicle-mounted air conditioning box generally uses an evaporator (refrigerant cooling) or a water cooler (water cooling), and the heat source generally uses a warm air core (cooling liquid heating) or an embedded condenser (refrigerant heating).

[0003] Currently, the cold source and the heat source in the air conditioning box are arranged in series, that is, the required hot air must first pass through the cold source for cooling before entering the heat source. When the hot air passes through the cold source, part of the heat is lost, so the required heat source has higher heat, causing an increase in the energy consumption of the heat source. When the cold air flows through the heat source, it is blocked by the heat source, causing a large ventilation resistance of the cold source. When the hot air first passes through the cold source and then enters the heat source, the ventilation resistance of the hot air is also increased, and the increase in the ventilation resistance leads to an increase in the energy consumption of the cold source and the heat source, and affects the air outlet efficiency of the air conditioning box. The increase in the energy consumption of the air conditioning box reduces the endurance of the new energy vehicle. The series arrangement of the heat source and the cold source also increases the transverse arrangement space of the air conditioning box, which is not conducive to the miniaturization of the air conditioning box. In view of the above problems, the vehicle-mounted air conditioning box needs to be improved.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those skilled in the art. SUMMARY

[0005] In view of the problems in the prior art, the purpose of the present application is to provide a vehicle-mounted air conditioning box and an automobile air conditioner, which has a compact structure, occupies a small space, has low energy consumption and high air outlet efficiency.

[0006] The embodiment of the present application provides a vehicle-mounted air conditioning box, which comprises an air inlet box, a blower and a distribution box connected in sequence, characterized in that an indoor heater and an indoor cooler are arranged between the blower and the distribution box, the indoor heater and the indoor cooler are arranged at a preset angle, the distribution box comprises a mixed air chamber, and the air outlet of the indoor heater and the air outlet of the indoor cooler are communicated with the mixed air chamber; a plurality of partition pieces and a first air door are arranged on the air inlet side of the indoor heater and the air inlet side of the indoor cooler; the partition pieces comprise a first partition piece, a second partition piece, a third partition piece and a fourth partition piece; wherein,

[0007] When the first damper is in the first position, two ends of the first damper are connected with the first partition and the second partition respectively, and the air inlet of the indoor heater is separated from the air outlet of the air blower;

[0008] When the first damper is in the second position, the first damper is not connected with the first partition, the second partition, the third partition and the fourth partition, and the air inlets of the indoor heater and the indoor cooler are communicated with the air outlet of the air blower.

[0009] When the first damper is in the third position, two ends of the first damper are connected with the third partition and the fourth partition respectively, and the air inlet of the indoor heater is separated from the air outlet of the air blower.

[0010] In some embodiments, the air outlet side of the indoor cooler is provided with at least one second damper, and the air outlet amount of the indoor cooler is controlled through the second damper.

[0011] In some embodiments, the air inlet box is provided with a circulating air inlet and a third damper for controlling the opening degree of the circulating air inlet.

[0012] In some embodiments, the distribution box is provided with at least one air outlet and a fourth damper for controlling the opening degree of the air outlet.

[0013] In some embodiments, the indoor heater is arranged at the bottom of the air inlet side of the indoor cooler.

[0014] In some embodiments, when the first damper is in the first position, at least one second damper is in the first position, the third damper is in the first position or the second position, and at least one fourth damper is in the first position, the air conditioning box performs a first function when the indoor cooler operates.

[0015] In some embodiments, when the first damper is in the second position, the second damper is in the second position, the third damper is in the first position or the second position, and at least one fourth damper is in the first position, the air conditioning box performs a second function when the indoor heater operates.

[0016] In some embodiments, when the first damper is in the first position, at least one second damper is in the second position, the third damper is in the first position or the second position, and at least one fourth damper is in the first position, the air conditioning box performs a third function when the indoor heater and the indoor cooler operate.

[0017] In some embodiments, when the first damper is in the third position, the second damper is in the second position, the third damper is in the first position or the second position, at least one of the fourth dampers is in the first position, the indoor heater and the indoor cooler are turned on, the air conditioner case performs a fourth function.

[0018] The embodiment of the present application also provides an automobile air conditioner, which comprises the vehicle-mounted air conditioner case according to any one of the above.

[0019] The vehicle-mounted air conditioner case and the automobile air conditioner provided by the present application have the following advantages.

[0020] By adjusting the specific position of the first damper, the indoor heater and the indoor cooler can be arranged in series or in parallel, thereby reducing the air resistance of hot air and cold air in the demand mode and reducing energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings.

[0022] Figure 1 is a structural schematic diagram of a vehicle-mounted air conditioner case provided by an embodiment of the present application;

[0023] Figure 2 is a principle schematic diagram of the vehicle-mounted air conditioner case in a cooling working mode according to an embodiment of the present application;

[0024] Figure 3 is a principle schematic diagram of the vehicle-mounted air conditioner case in a heating working mode according to an embodiment of the present application;

[0025] Figure 4 is a principle schematic diagram of the vehicle-mounted air conditioner case in a temperature adjustment working mode according to an embodiment of the present application;

[0026] Figure 5 is a principle schematic diagram of the vehicle-mounted air conditioner case in a heating and maximum dehumidification mode according to an embodiment of the present application;

[0027] Figure 6 is a structural schematic diagram of a vehicle-mounted air conditioner case according to another embodiment of the present application.

[0028] Reference Signs:

[0029] 10 air inlet box 61 first partition

[0030] 20 air blower 62 second partition

[0031] 30 distribution box 63 third partition

[0032] 31 first air outlet 64 fourth partition

[0033] 32 second air outlet 71 first damper

[0034] 33 third air outlet 72 second damper

[0035] 34 fourth air outlet 73 third damper

[0036] 40 indoor heater 74 fourth damper

[0037] 50 indoor cooler 80 filter element

[0038] 90 drain structure DETAILED DESCRIPTION

[0039] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and description of the same elements will be omitted for brevity.

[0040] In the present application, expressions such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in connection with the embodiment or example are included in at least one embodiment or example of the present application. Also, the specific features, structures, materials or characteristics of the expressions can be combined in any one or more embodiments or examples in a suitable manner. In addition, the different embodiments or examples represented in the present application and the features of the different embodiments or examples can be combined and combined by those skilled in the art without contradiction with each other.

[0041] In addition, the terms "first", "second" are used only for the purpose of representation, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0042] It should be further understood that the terms "comprises", "comprising", "includes", "including", "contains", "containing", "has", "having", "unl ess" and "except" are used in this specification to mean "including but not limited to", or "including, but not limited to". The term "or" is used in this specification to mean "and / or", unless otherwise explicitly indicated. The term "and / or" means "and", "or" or both, as used in this specification. As used in this specification, the term "if" can be construed to mean "when" or "upon" or "in response to the occurrence of" under certain circumstances but that alternative con struction is to be understood only if the explicit mention of such circumstances is otherwise explicitly provided. In addition, the terms "comprise", "comprising", "comprises", "comprised of", "comprising", "comprise", "comprised", "comprising" or any variation thereof, are used synonymously with "include", "including", "includes" or "including", "include", "including", "includes" or "including" in this specification. The terms "exemplary" and "for example" are used to illustrate an example, and are not used to limit or narrow the scope of the disclosure. The term "about" means "approximately" or "circa", and means that the recited numerical values or ranges include normal fluctuations or variations that occur in a given context. The term "consisting essentially of" means that the recited composition of matter or steps of a method can contain additional components, steps, or compounds, provided that these additions do not materially alter the basic and novel characteristics of the disclosed compositions or methods. The term "consisting of means an exclusive "consisting of", that is, the recited components, steps, or compounds are the only components, steps, or compounds present in the composition or method of matter, as applicable.

[0043] To solve the problems in the prior art, the present application provides a vehicle-mounted air conditioning box. Figure 1 The structure of the vehicle-mounted air conditioning box provided by an embodiment of the present application is shown in the figure. As shown in the figure, Figure 1 The vehicle-mounted air conditioning box comprises an air inlet box 10, a blower 20 and a distribution box 30 connected in sequence. Specifically, an indoor heater 40 and an indoor cooler 50 are arranged between the blower 20 and the distribution box 30, the indoor heater 40 and the indoor cooler 50 are arranged at a preset angle, and the distribution box 30 comprises a mixed air chamber, the air outlet of the indoor heater 40 is in communication with the mixed air chamber; the air inlet side of the indoor heater 40 and the air inlet side of the indoor cooler 50 are provided with a plurality of partition pieces and a first air door 71; the partition pieces comprise a first partition piece 61, a second partition piece 62, a third partition piece 63 and a fourth partition piece 64;

[0044] When the first air door 71 is in the first position, the two ends of the first air door 71 are connected with the first partition piece 61 and the second partition piece 62 respectively, and the air inlets of the indoor heater 40 and the blower 20 are separated. It should be noted that since the air door is used to adjust the air inlet and air outlet of each air inlet and air outlet, the air door can be adjusted at multiple positions to meet the demand of different air volume through the air door. Therefore, Figure 1 The air door represented by the dashed line is the position that can be further adjusted by the air door represented by the solid line, and is not actually an existing air door.

[0045] When the first air door 71 is in the second position, the first air door 71 is not connected with the first partition piece 61, the second partition piece 62, the third partition piece 63 and the fourth partition piece 64, and the air inlets of the indoor heater 40 and the indoor cooler 50 are in communication with the air outlet of the blower 20. It should be noted that the second position of the first air door 71 refers to all positions where the first air door is not in contact with each partition piece, and therefore is not limited to the position shown in the figure. In actual use, the second position of the first air door 71 can be adjusted according to actual needs.

[0046] When the first damper 71 is in the third position, the two ends of the first damper 71 are connected with the third partition 63 and the fourth partition 64 respectively, and the air inlet of the indoor heater 40 is separated from the air outlet of the air blower 20.

[0047] By adjusting the specific position of the first damper 71, the series or parallel arrangement of the indoor heater 40 and the indoor cooler 50 can be realized, thereby reducing the air resistance of hot air and cold air in the demand mode and reducing energy consumption.

[0048] Further, as shown in Figure 1 , the air outlet side of the indoor cooler 50 is provided with at least one second damper 72, and the air outlet amount of the air outlet of the indoor cooler 50 is controlled through the second damper 72. It should be noted that the movement position of the damper in this paper is adjusted by a damper driving member, which can be a gear or a connecting rod mechanism. According to actual needs, one damper driving member can be provided to synchronously drive multiple dampers to rotate, thereby saving the number of motors required.

[0049] Further, as shown in Figure 1 , the air inlet box 10 is provided with a circulating air inlet and a third damper 73 for controlling the opening degree of the circulating air inlet. In this embodiment, the air inlet box 10 is provided with two circulating air inlets, one of which can introduce external fresh air into the air inlet box 10, and the other of which can introduce indoor circulating air into the air inlet box 10. The third damper 73 in the first position indicates that one of the circulating air inlets for introducing indoor circulating air or external fresh air is open, and the third damper 73 in the second position indicates that the other of the circulating air inlets for introducing indoor circulating air or external fresh air is open.

[0050] Further, as shown in Figure 1 , the distribution box 30 is provided with at least one air outlet and a fourth damper 74 for controlling the opening degree of the air outlet. In this embodiment, the distribution box 30 is provided with four air outlets, namely a first air outlet 31, a second air outlet 32, a third air outlet 33 and a fourth air outlet 34, and each air outlet is provided with a fourth damper 74 near one side of the indoor cooler 50 for adjusting the air volume. Each air outlet is used for defrosting, face blowing, front foot blowing and rear foot blowing, etc. The number of air outlets of the distribution box 30 is not limited to the four shown above, and the specific number can be set according to actual needs.

[0051] Further, please continue to refer to Figure 1 , the vehicle-mounted air conditioning box further comprises a filter 80, which is arranged between the air outlet side of the air blower 20 and the air inlet side of the indoor heater 40 and the indoor cooler 50. Through the filter 80, the airflow entering the distribution box 30 or the air inlet box 10 can be filtered, so that the airflow blown to the passenger compartment is cleaner. As shown in Figure 6As shown, in another embodiment, a filter 80 can also be arranged between the air outlet side of the air inlet box 10 and the air inlet side of the air blower 20, so that the air can be filtered before entering the air blower 20.

[0052] Further, the air blower 20 in the embodiment can be a double-layer flow air blower, which can reduce energy consumption. However, the air blower is not limited to this type, and can also be other existing types.

[0053] Further, in the embodiment, the indoor heater 40 is arranged at the bottom of the air inlet side of the indoor cooler 50, and the bottom of the indoor cooler 50 is provided with a drainage structure 90 for draining condensed water. In the prior art, the indoor heater 40 and the indoor cooler are arranged in series, which increases the occupied space in the axial direction (lateral direction) of the air conditioner box, resulting in an excessively large volume of the air conditioner box. In addition, in the prior art, when the drainage structure 90 is arranged at the bottom of the indoor cooler 50, the temperature around the drainage structure 90 is low, and condensation water is likely to be generated around the drainage structure 90, which may cause corrosion and short circuit of the parts arranged around the drainage structure 90. Therefore, it is difficult to arrange other parts around the space at the bottom of the indoor cooler 50. In the embodiment, the indoor heater 40 is arranged at the bottom of the indoor cooler 50, so that the space at the bottom of the indoor cooler 50 can be utilized, thereby making the structure of the air conditioner box compact and reducing the occupied space, which is conducive to miniaturization of the air conditioner box. It should be noted that the indoor heater 40 is arranged at the bottom of the indoor cooler 50, and the ventilation air path of the indoor heater 40 can form a heat insulation layer at the bottom of the drainage structure 90, so as to avoid condensation.

[0054] Further, as shown, Figure 2 When the first air door 71 is in the first position, at least one second air door 72 is in the first position, the third air door 73 is in the first position, and at least one fourth air door 74 is in the first position, the indoor cooler 50 operates, and the air conditioner box performs the first function. Here, the first function is a cooling function, and the indoor heater 40 and the indoor cooler 50 are in parallel mode. It should be noted that the second air door 72 in the first position means that the second air door 72 is opened, so that the cold air exchanged by the indoor cooler 50 can be discharged; the third air door 73 in the first position means that the first air inlet of the air inlet box 10 is opened; and the fourth air door 74 in the first position means that the air outlet of the air distribution box 30 is opened.

[0055] Specifically, as shown, Figure 2As shown, when the first damper 71 is in the first position, its two ends are connected to the first separator 61 and the second separator 62 respectively. Therefore, the circulating air entering through the air inlet of the air inlet box 10, after being rectified and diffused by the blower 20, will only enter the inlet of the indoor air conditioner 50. When the indoor air conditioner 50 is running, the circulating air, after heat exchange, enters the mixing chamber through the second damper 72, and is further blown into the passenger compartment through the second air outlet 32 ​​and the fourth air outlet 34. When the vehicle air conditioning unit is performing the cooling function, the indoor heater 40 and the indoor air conditioner 50 are in parallel mode. The circulating air entering the air conditioning unit only flows through the indoor air conditioner 50 for heat exchange and does not flow through the indoor heater 40. Therefore, it is not blocked by the indoor heater 40, so the wind resistance of the cold air is small, and the energy consumption of the indoor air conditioner 50 is saved.

[0056] Furthermore, such as Figure 3 As shown, when the first damper 71 is in the second position, the second damper 72 is in the second position, the third damper 73 is in the second position, and at least one fourth damper 74 is in the first position, the indoor heater 40 operates, and the air conditioning unit performs the second function. Here, the second function is the heating function, and the indoor heater 40 and the indoor cooler 50 are connected in parallel. It should be noted that the second damper 72 being in the second position indicates that the second damper 72 is closed, preventing the cold air that has been heated by the indoor cooler 50 from being discharged; the third damper 73 being in the second position indicates that the second air inlet of the air inlet box 10 is open.

[0057] Specifically, such as Figure 3 As shown, when the first damper 71 is in the second position, it is not connected to the first partition 61, the second partition 62, the third partition 63, and the fourth partition 64. Therefore, the circulating air entering through the air inlet of the air inlet box 10, after being rectified and diffused by the blower 20, enters the inlet of the indoor heater 40. After heat exchange, it enters the mixing chamber and is then blown into the passenger compartment through the first air outlet 31 and the third air outlet 33. When the vehicle air conditioning unit is performing the heating function, the indoor heater 40 and the indoor cooler 50 are in parallel mode. The circulating air only flows through the indoor heater 40 for heat exchange and does not flow through the indoor cooler 50. It is not blocked by the indoor cooler 50, so the resistance of the hot air is small, and the energy consumption of the indoor heater is saved.

[0058] Furthermore, such as Figure 4 As shown, when the first damper 71 is in the second position, at least one second damper 72 is in the first position, and the third damper 73 is in the first position, and the indoor cooler 50 and indoor heater 40 are running, the air conditioning unit performs a third function. This third function is a temperature control mode, and the indoor heater 40 and indoor cooler 50 are in parallel operation. Specifically, as... Figure 4As shown, the first damper 71 is not connected with each partition, thus the circulating air entering the air inlet of the air inlet box 10 is rectified and expanded by the air blower 20, and then a part of the circulating air enters the indoor heater 40 for heat exchange, and the heated air after heat exchange enters the air mixing chamber; another part of the circulating air enters the indoor cooler 50 for heat exchange, and the cooled air after heat exchange enters the air mixing chamber, and the cooled air and the heated air are mixed, and then are discharged from the second air outlet 32, the third air outlet 33 and the fourth air outlet 34 to blow into the cabin to meet different use requirements and improve the comfort of the driver and the passenger. It should be noted that the mixing ratio of the cooled air and the heated air depends on the air volume entering the indoor heater 40 controlled by the first damper 71 and the air volume of the cooled air discharged controlled by the second damper 72.

[0059] Further, as shown in FIG. 6, when the first damper 71 is in the third position, the second damper 72 is in the second position, the third damper 73 is in the second position, at least part of the fourth damper 74 is in the first position, and the indoor heater 40 and the indoor cooler 50 are in conduction, the air conditioning box performs the fourth function. Here, the fourth function is a heating and maximum dehumidification mode, and the indoor heater 40 and the indoor cooler 50 are in series. Specifically, as shown in FIG. 6, the two ends of the first damper 71 are connected with the two ends of the third partition 63 and the fourth partition 64, respectively, at this time, the air inlet of the indoor heater 40 is separated from the air outlet of the air blower 20, and the circulating air rectified and expanded by the air blower 20 only enters the indoor cooler 50 first for heat exchange, and then the cooled air further passes through the indoor heater 40 for heat exchange, and then the heated air enters the air mixing chamber and is blown into the passenger cabin through the first air outlet 31 and the third air outlet 33. The circulating air is first dehumidified by the indoor cooler 50, and then is heated to form the heated air. Therefore, the humidity of the heated air blown into the passenger cabin is low, the comfort of the passenger is improved, and the humidity in the vehicle is prevented from being too high to cause the vehicle window glass to fog. Figure 5 Figure 5

[0060] The vehicle air conditioner provided by the present application has the following advantages:

[0061] In summary, the vehicle air conditioner and the vehicle air conditioner provided by the present application have the following advantages:

[0062] By adjusting the specific position of the first damper, the indoor heater and the indoor cooler can be arranged in series or in parallel, and then the air resistance of the heated air and the cooled air is reduced in the demand mode, and the energy consumption is reduced.

[0063] ​​By arranging the indoor heater at the bottom of the indoor cooler, the space at the bottom of the indoor cooler can be utilized, and thus the structure of the air conditioning box is compact, the space occupied is small, and the miniaturization of the air conditioning box is facilitated.

[0064] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application should not be limited to these descriptions. For ordinary skilled persons in the art to which the present application belongs, a number of simple deductions or substitutions can be made without departing from the concept of the present application, and all of them should be regarded as falling within the protection scope of the present application.

Claims

1. A vehicle-mounted air conditioning unit, comprising an air intake box, a blower, and a distribution box connected in sequence, characterized in that, An indoor heater and an indoor cooler are provided between the blower and the distribution box. The indoor heater and the indoor cooler are set at a preset angle. The distribution box includes a mixing chamber, and the air outlets of the indoor heater and the indoor cooler are connected to the mixing chamber. Multiple partitions and a first damper are provided on the air inlet side of the indoor heater and the air inlet side of the indoor cooler. The partitions include a first partition, a second partition, a third partition, and a fourth partition. When the first damper is in the first position, both ends of the first damper are connected to the first partition and the second partition respectively, and the air inlet of the indoor heater is separated from the air outlet of the blower. When the first damper is in the second position, the first damper is not connected to the first partition, the second partition, the third partition, or the fourth partition, and the air inlet of the indoor heater and the air inlet of the indoor cooler are connected to the air outlet of the blower. When the first damper is in the third position, both ends of the first damper are connected to the third partition and the fourth partition respectively, and the air inlet of the indoor heater is separated from the air outlet of the blower.

2. The vehicle-mounted air conditioning unit according to claim 1, characterized in that, The indoor air cooler is provided with at least one second damper on the air outlet side, and the air volume of the indoor air cooler is controlled by the second damper.

3. The vehicle-mounted air conditioning unit according to claim 2, characterized in that, The air inlet box is equipped with a circulating air inlet and a third damper for controlling the opening of the circulating air inlet.

4. The vehicle-mounted air conditioning unit according to claim 3, characterized in that, The distribution box is provided with at least one air outlet and a fourth damper for controlling the opening of the air outlet.

5. The vehicle-mounted air conditioning unit according to claim 1, characterized in that, The indoor heater is located at the bottom of the air inlet side of the indoor cooler.

6. The vehicle-mounted air conditioning unit according to claim 4, characterized in that, The first damper is in a first position, at least one second damper is in a first position, the third damper is in a first or second position, and at least one fourth damper is in a first position. When the indoor cooler is running, the air conditioning unit performs the first function.

7. The vehicle-mounted air conditioning unit according to claim 4, characterized in that, The first damper is in the second position, the second damper is in the second position, the third damper is in the first or second position, and at least one of the fourth dampers is in the first position. When the indoor heater is running, the air conditioning unit performs the second function.

8. The vehicle-mounted air conditioning unit according to claim 4, characterized in that, The first damper is in the second position, at least one second damper is in the first position, the third damper is in the first or second position, and at least one fourth damper is in the first position. When the indoor heater and the indoor cooler are running, the air conditioning unit performs a third function.

9. The vehicle-mounted air conditioning unit according to claim 4, characterized in that, When the first damper is in the third position, the second damper is in the second position, the third damper is in the first or second position, and at least one of the fourth dampers is in the first position, the indoor heater and the indoor cooler are connected, the air conditioning unit performs the fourth function.

10. An automotive air conditioner, characterized in that, Includes the vehicle air conditioning unit as described in any one of claims 1 to 9.

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