Automobile air conditioner box

Abstract

The utility model discloses a kind of automobile air conditioner box, including box, thermal management component and first temperature door, box is equipped with inner chamber, inner chamber is equipped with partition component, partition component separates inner chamber into upper cavity and lower cavity;Thermal management component includes cooling liquid circuit, refrigerant circuit and electrically-controlled three-way valve, refrigerant circuit is equipped with heat exchanger, cooling liquid circuit is equipped with hot channel and warm core, electrically-controlled three-way valve has inlet and two outlets, two outlets are connected with hot channel and warm core respectively, one of inlet and two outlets is selectively communicated;First temperature door can rotate to form the gap for cold air flow circulation between the heat exchanger and the warm core. By setting thermal management component and first temperature door, so that air conditioner box when refrigeration, cooling liquid in warm core stops flowing, hot channel near warm core area opens for cold air to flow through, under the premise of not increasing the volume of box and same blower power, air conditioner system air volume is obviously improved, improve refrigeration efficiency and whole vehicle noise can be controlled within reasonable range.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning technology, and in particular to an automotive air conditioning unit. Background Technology

[0002] With the development of automotive technology, the requirements for passenger cabin comfort have increased, leaving relatively limited design space for the air conditioning unit. The requirements for lightweight air conditioning units are also higher. Under these circumstances, if we want to maintain the current level of air conditioning cooling performance and air volume indicators or further improve them, we have to further increase the power and speed of the blower. This will not only increase the overall size of the air conditioning system, but also cause the vehicle noise level to exceed the standard. Utility Model Content

[0003] The purpose of this invention is to provide an automotive air conditioning unit that can maintain the same volume while increasing the cooling air volume.

[0004] To achieve this objective, the present invention adopts the following technical solution: an automotive air conditioning unit, comprising a housing, a thermal management component, and a first temperature gate. The housing has an inner cavity, in which a partition component is provided, dividing the inner cavity into an upper cavity and a lower cavity. The upper cavity is located above the lower cavity. The housing has a front end and a rear end. The top of the front end has an openable and closable front air outlet, which communicates with the upper cavity. The bottom of the front end has an openable and closable rear air outlet, which communicates with the lower cavity. The rear end is open. The thermal management component includes a coolant circuit, a refrigerant circuit, and an electrically controlled three-way valve. The refrigerant circuit has a heat exchanger installed at the opening of the housing. The coolant circuit has a heat channel and a heating element. The electrically controlled three-way valve has an inlet and two outlets. The outlets are connected to the hot channel and the heating core, respectively. The inlet is selectively connected to one of the two outlets. The heating core is installed on the partition assembly. Part of the heating core is located in the upper cavity, and the rest is located in the lower cavity. The top end of the heating core is spaced apart from the top wall of the inner cavity to form a first air outlet channel, and the bottom end of the heating core is spaced apart from the bottom wall of the inner cavity to form a second air outlet channel. A first temperature gate is rotatably installed between the heat exchanger and the heating core and is located above the partition assembly. The first temperature gate and the partition assembly cooperate to separate the heat exchanger and the heating core in the upper cavity. When the inlet of the electrically controlled three-way valve is connected to the outlet corresponding to the hot channel, the first temperature gate can rotate to form a channel for cold air to flow between the heat exchanger and the heating core.

[0005] Preferably, the top of the heating element is tilted away from the front air outlet.

[0006] Preferably, the automotive air conditioning unit further includes a second temperature door, which is rotatably mounted between the heat exchanger and the heating element and located below the partition assembly. The second temperature door can cooperate with the partition assembly to separate the heat exchanger and the heating element in the lower cavity, or to block the second air outlet channel.

[0007] Preferably, the partition assembly includes a fixing block and a compensating damper, the heating core is fixed to the fixing block, and the compensating damper is rotatably mounted on the side of the heating core away from the heat exchanger. Rotating the compensating damper connects or disconnects the upper cavity and the lower cavity.

[0008] Preferably, the partition assembly further includes an air guide plate located on the side of the heating core away from the heat exchanger, and the air guide plate extends upward in a vertical direction.

[0009] Preferably, the air guide plate is integrally formed on the fixing block.

[0010] Preferably, along the width direction of the housing, at least one side of the housing is provided with an openable and closable side air outlet, which is located on the side of the air guide plate away from the heating core and communicates with the upper cavity.

[0011] Preferably, the top surface of the housing is provided with an openable and closable upper air outlet, which is connected to the upper cavity.

[0012] Preferably, the top surface of the housing is provided with an openable and closable defrost air outlet, which is located between the upper air outlet and the front air outlet and communicates with the upper cavity.

[0013] The beneficial effects of this invention are as follows: In heating mode, the electronically controlled three-way valve of the automotive air conditioning unit opens, allowing coolant to exchange heat through the heating core, thus achieving the heating purpose. In cooling mode, the electronically controlled three-way valve closes, preventing coolant from flowing to the heating core. At this time, the first temperature gate inside the unit can be opened, allowing some air to pass through the heating core area and reach the passenger compartment from the front air outlet. Compared to the traditional cooling mode, which only opens the cold aisle, by setting up thermal management components and the first temperature gate, there is no need to design or install complex coolant circuits or special hot air channels. The electronically controlled three-way valve controls the heating core to stop coolant flow, so that when the air conditioning unit is cooling, the coolant inside the heating core stops flowing, and the hot aisle near the heating core area can also be opened to allow cold air to flow through. With both cold and hot aisles fully open, the resistance inside the unit is significantly reduced. Without increasing the unit volume and with the same blower power, the airflow of the air conditioning system is significantly improved, increasing cooling efficiency while keeping the overall vehicle noise within a reasonable range. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the electrically controlled three-way valve according to an embodiment of this application;

[0015] Figure 2 This is a schematic diagram of the structure of an automotive air conditioning unit according to an embodiment of this application;

[0016] Figure 3 This is a schematic diagram of airflow in the cooling mode of an automotive air conditioning unit according to an embodiment of this application.

[0017] In the diagram: 1. Housing; 11. Inner cavity; 111. Upper cavity; 112. Lower cavity; 113. First air outlet duct; 114. Second air outlet duct; 12. Divider assembly; 121. Fixing block; 122. Compensating damper; 123. Air guide plate; 13. Front air outlet; 131. Front damper; 14. Rear air outlet; 141. Rear damper; 15. Side air outlet; 16. Upper air outlet; 161. Upper damper; 17. Defrost air outlet; 171. Defrost damper; 21. Electrically controlled three-way valve; 22. Heat exchanger; 23. Heating core; 31. First temperature gate; 32. Second temperature gate. Specific Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0022] Reference Figures 1 to 3 As shown, an automotive air conditioning unit according to an embodiment of this application includes a housing 1, a thermal management component, and a first temperature gate 31. The housing 1 has an inner cavity 11, and a partition component 12 is provided in the inner cavity 11, dividing the inner cavity 11 into an upper cavity 111 and a lower cavity 112, with the upper cavity 111 located above the lower cavity 112. The housing 1 has a front end and a rear end. The top of the front end has an openable and closable front air outlet 13, which communicates with the upper cavity 111. The bottom of the front end has an openable and closable rear air outlet 14, which communicates with the lower cavity 112. The rear end is open. Specifically, a front damper 131 is provided at the connection between the front outlet and the inner cavity 11, and a rear damper 141 is provided at the connection between the rear outlet 14 and the inner cavity 11. Both the front damper 131 and the rear damper 141 are rotatably connected to the housing 1 and are respectively connected to a motor. Rotating the front damper 131 can control the opening and closing of the front outlet 13 and the air volume, and rotating the rear damper 141 can control the opening and closing of the rear outlet 14 and the air volume.

[0023] The thermal management components include a coolant circuit, a refrigerant circuit, and an electronically controlled three-way valve 21. The coolant circuit is a circuit in which high-temperature coolant flows, and it is mainly used to heat the passenger compartment and battery pack. The refrigerant circuit is a circuit in which low-temperature refrigerant flows, consisting of components such as a compressor and condenser, and it is mainly used to cool the passenger compartment and battery pack. The refrigerant circuit is equipped with a heat exchanger 22, which is the evaporator in the thermal management system. The air conditioning unit is fixed behind the HVAC (heating, ventilation, and air conditioning) module behind the vehicle's dashboard. The front air outlet 13 is connected to the front passenger compartment, and the rear air outlet is connected to the rear passenger compartment. A blower is fixed to one side of the rear end of the unit 1. The blower is used to blow airflow toward the heat exchanger 22. When coolant flows in the heat exchanger 22, the heat exchanger 22 can cool the airflow. The coolant circuit includes a heat channel and a heater core 23 (i.e., heater core). The heat channel is a pipe connected in parallel with the heater core. The heater core 23 can be a heat exchange element with a thin tube connected to the engine cooling system via a pipe (i.e., in a conventional vehicle) or a PTC heating element (i.e., in a new energy vehicle). The heat exchanger 22 is vertically arranged, and its shape matches the opening of the housing 1 and it is installed at the opening of the housing 1. The heater core 23 is installed on the partition assembly 12, with part of the heater core 23 located in the upper cavity 111 and the rest located in the lower cavity 112, meaning that part of the heater core 23 passes through the partition assembly 12. The top end of the heating element 23 is spaced apart from the top wall of the inner cavity 11 to form a first air outlet channel 113, and the bottom end of the heating element 23 is spaced apart from the bottom wall of the inner cavity 11 to form a second air outlet channel 114. An electronically controlled three-way valve 21 is integrated into the coolant circuit of the vehicle's thermal management system. The electronically controlled three-way valve 21 has an inlet and two outlets, which are respectively connected to the heat channel and the heating element 23. The inlet and one of the two outlets are selectively connected. When the inlet of the electronically controlled three-way valve 21 is connected to the corresponding outlet of the heating element 23, the vehicle's air conditioning unit heats the passenger compartment. When the inlet of the electronically controlled three-way valve 21 is connected to the corresponding outlet of the heat channel, the heat channel heats a specific area outside the passenger compartment (e.g., the engine area).

[0024] The first temperature gate 31 is rotatably mounted between the heat exchanger 22 and the heating core 23 and is located above the partition assembly 12. The first temperature gate 31 can cooperate with the partition assembly 12 to separate the heat exchanger 22 and the heating core 23 within the upper cavity 111. Specifically, the partition assembly 12 has two limiting plates on the side of the heating core 23 facing the heat exchanger 22. The two limiting plates are spaced apart vertically and can abut against both ends of the first temperature gate 31. When the first temperature gate 31 rotates to the position abutting against the two limiting plates (i.e., when the conventional air conditioning unit is in cooling mode), the projection of the first temperature gate 31 and the partition assembly 12 on the side wall of the heat exchanger 22 covers the projection of the heating core 23 in the upper cavity 111 on the side wall of the heat exchanger 22, thereby separating the heat exchanger 22 and the heating core 23, so that the airflow passing through the heat exchanger 22 in the upper cavity 111 cannot flow to the heating core 23. When the inlet of the electronically controlled three-way valve 21 is connected to the outlet corresponding to the hot channel (i.e., when the car air conditioning unit is in cooling mode), the first temperature gate 31 can rotate to form a channel for the flow of cold air between the heat exchanger 22 and the heating core 23.

[0025] Understandably, in the heating mode, the electronically controlled three-way valve 21 and the first temperature gate 31 are open, connecting the inlet and the outlet corresponding to the heating core 23. The high-temperature coolant exchanges heat with the airflow through the heating core 23, causing warm air to blow out from the front air outlet 13, thus achieving the purpose of heating. In the cooling mode, the electronically controlled three-way valve 21 is closed, disconnecting the inlet and the outlet corresponding to the heating core 23 and connecting with the outlet corresponding to the hot channel. The coolant no longer flows to the heating core 23. At this time, the first temperature gate 31 inside the housing 1 rotates and opens, forming a channel for the flow of cold air (i.e., the original hot channel) between the heat exchanger 22 and the heating core 23, allowing some air to reach the passenger compartment from the front air outlet 13 through the area of ​​the heating core 23.

[0026] Compared to traditional cooling modes, which only open the cold aisle, by setting up thermal management components and a first temperature gate 31, there is no need to design or install complex coolant circuits or special hot air channels. The electronically controlled three-way valve 21 controls the heating core 23 to stop the coolant from entering, so that the hot aisle near the heating core 23 area can also open to supply cold air flow during cooling. With both cold and hot aisles fully open, the resistance inside the housing 1 is significantly reduced. Under the premise of not increasing the volume of the housing 1 and keeping the blower power the same, the air volume of the air conditioning system is significantly improved, the cooling efficiency is improved, and the noise of the whole vehicle can be controlled within a reasonable range.

[0027] In addition, when the car air conditioning unit is in mixed air mode (that is, when the inlet of the electronically controlled three-way valve 21 and the outlet corresponding to the heating core are connected and the heat exchanger is operating normally), the first temperature gate 31 can also be separated from the limiting plate. By controlling the rotation angle of the first temperature gate 31, the airflow through the heating core 23 in the upper cavity 111 can be controlled, thereby controlling the air outlet temperature of the front air outlet 13 of the air conditioning unit. This will not be elaborated further here.

[0028] Furthermore, the top of the heating core 23 is tilted away from the front air outlet 13.

[0029] By tilting the heating core 23, on the one hand, the heat exchange area of ​​the heating core 23 can be increased within the limited space of the upper cavity 111, thereby improving the space utilization of the housing 1 and increasing the heating efficiency; on the other hand, a larger space can be left between the top of the heating core 23 and the front air outlet 13, so that in the mixed air mode, the cold air passing through the first air outlet 113 and the hot air passing through the heating core 23 can be fully mixed between the top of the heating core 23 and the front air outlet 13, avoiding the problem of uneven temperature of the mixed air at the front air outlet 13.

[0030] Reference Figure 3 As shown, it can be understood that the automotive air conditioning unit also includes a second temperature gate 32. The second temperature gate 32 is rotatably mounted between the heat exchanger 22 and the heating core 23 and is located below the partition assembly 12. The second temperature gate 32 can cooperate with the partition assembly 12 to separate the heat exchanger 22 and the heating core 23 within the lower cavity 112, or to block the second air outlet duct 114. Specifically, the shape of the second temperature gate 32 is approximately a V-shape with an opening towards the heating core 23. When the second temperature gate 32 is rotated upward to its limit position (i.e., when the conventional air conditioning unit is in cooling mode), the projection of the second temperature gate on the side wall of the heat exchanger 22 covers the projection of the heating core 23 on the side wall of the heat exchanger 22 within the lower cavity 112, thereby separating the heat exchanger 22 and the heating core 23, so that the airflow passing through the heat exchanger 22 in the lower cavity 112 cannot flow to the heating core 23.

[0031] By setting a second temperature gate 32, it can function similarly to the first temperature gate 31 in the lower cavity 112. When the second temperature gate 32 is rotated downwards to its limit position (i.e., when the air conditioning unit is in heating mode), the projection of the second temperature gate 32 on the side wall of the heat exchanger 22 covers the projection of the second air outlet channel 114 in the lower cavity 112 on the side wall of the heat exchanger 22, thereby blocking the second air outlet channel 114 and allowing all the airflow passing through the heat exchanger 22 in the lower cavity 112 to flow to the heating core 23. In addition, when the car air conditioning unit is in mixed air mode, the airflow rate passing through the heating core 23 in the lower cavity 112 can be controlled by the rotation angle of the second temperature gate 32, thereby controlling the air outlet temperature of the front air outlet 13 of the air conditioning unit and achieving precise control of the air outlet temperature of the rear air outlet 14.

[0032] Furthermore, the partition assembly 12 includes a fixing block 121 and a compensating damper 122. The fixing block 121 is an irregular block placed horizontally in the inner cavity 11. The width of the fixing block 121 is equal to the width of the inner cavity 11. One end of the fixing block 121 is spaced apart from the inner wall of the front end of the housing 1, and the other end extends to the opening of the housing 1. The heating core 23 is fixed to the fixing block 121. The compensating damper 122 is rotatably installed on the side of the heating core 23 away from the heat exchanger 22. Rotating the compensating damper 122 connects or disconnects the upper cavity 111 and the lower cavity 112.

[0033] With the rear air outlet 14 closed by the rear damper 141, opening the compensation damper 122 allows cold or hot air from the lower chamber 112 to be directed into the upper chamber 111, further increasing the airflow from the front air outlet 13. Similarly, with the front air outlet 13 closed by the front damper 131, opening the compensation damper 122 allows cold or hot air from the upper chamber 111 to be directed into the lower chamber 112, further increasing the airflow from the rear air outlet 14. By controlling the connection or disconnection between the upper and lower chambers 111 and 112 using the compensation damper 122, the airflow from the front air outlet 13 or the rear air outlet 14 can be compensated, improving the controllability of the automotive air conditioning unit.

[0034] Continue to refer to Figure 3 As shown, it can be understood that the partition assembly 12 also includes an air guide plate 123, which is located on the side of the heating core 23 away from the heat exchanger 22 and extends upward in a vertical direction.

[0035] By setting the air guide plate 123, on the one hand, the air guide plate 123 can guide the airflow passing through the heating core 23 to move towards the front air outlet 13, avoiding the airflow staying in the upper cavity 111 for too long and affecting the airflow; on the other hand, by setting the air guide plate 123 between the compensating damper 122 and the heating core 23, the airflow passing through the compensating damper 122 in the lower cavity 112 can be guided to move towards the front air outlet 13, avoiding the airflow in the lower cavity 112 from colliding with the airflow passing through the heating core 23 to form turbulence and affect the airflow, effectively improving the smoothness of the airflow from the front air outlet 13.

[0036] Furthermore, the air guide plate 123 is integrally formed on the fixing block 121.

[0037] The air guide plate 123 has a simple structure and is easy to process. The air guide plate 123 and the fixing block 121 are integrally formed, which can simplify the structure of the partition component 12 and reduce the production and layout cost of the partition component 12.

[0038] Reference Figure 2As shown, it can be understood that, along the width direction of the housing 1, at least one side of the housing 1 is provided with an openable and closable side air outlet 15. The side air outlet 15 is located on the side of the air guide plate 123 away from the heating core 23 and is connected to the upper cavity 111. Specifically, a side air damper is provided at the connection between the side air outlet 15 and the upper cavity 111. The side air damper is rotatably connected to the housing 1 and is connected to a motor. Rotating the side air damper can control the opening and closing of the side air outlet 15 and the air volume.

[0039] By setting the side air outlet 15, air can be delivered to the side areas of the passenger compartment, such as the gap between the door and the seat, and the side and rear of the front passenger, to assist airflow, optimize airflow distribution, ensure a consistent temperature throughout the passenger compartment, and assist in defrosting, thereby improving the consistency of airflow from the car's air conditioning unit.

[0040] Furthermore, an openable and closable upper air outlet 16 is provided on the top surface of the housing 1 near the rear end, and the upper air outlet 16 is connected to the upper cavity 111. Specifically, an upper air damper 161 is provided at the connection between the upper air outlet 16 and the upper cavity 111. The upper air damper 161 is rotatably connected to the housing 1 and is connected to a motor. Rotating the upper air damper 161 can control the opening and closing of the upper air outlet 16 and the air volume.

[0041] By setting the upper air outlet 16, air can be directly supplied to the dashboard area of ​​the passenger compartment. When the temperature is high, the ambient temperature around the electrical components on the dashboard is reduced to ensure stable vehicle operation. When the temperature is low, the ambient temperature around the electrical components on the dashboard is increased to ensure normal start-up of the dashboard.

[0042] Furthermore, the top surface of the housing 1 is provided with an openable and closable defrost air outlet 17, which is located between the upper air outlet 16 and the front air outlet 13 and communicates with the upper cavity 111. Specifically, a defrost damper 171 is provided at the connection between the defrost air outlet 17 and the upper cavity 111. The defrost damper 171 is rotatably connected to the housing 1 and is connected to a motor. Rotating the defrost damper 171 can control the opening and closing of the defrost air outlet 17 and the airflow volume.

[0043] By setting up a defrost air outlet 17, the defrost air outlet 17 can deliver air to the windshield in front of the passenger compartment to achieve the defrosting and defogging function, thus expanding the functionality of the car air conditioning unit.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An automotive air conditioning unit, characterized by, include: The housing (1) has an inner cavity (11) and a partition component (12) in the inner cavity (11). The partition component (12) divides the inner cavity (11) into an upper cavity (111) and a lower cavity (112). The upper cavity (111) is located above the lower cavity (112). The housing (1) has a front end and a rear end. The top of the front end has an openable and closable front air outlet (13) that communicates with the upper cavity (111). The bottom of the front end has an openable and closable rear air outlet (14) that communicates with the lower cavity (112). The rear end is open. The thermal management component includes a coolant circuit, a refrigerant circuit, and an electrically controlled three-way valve (21). The refrigerant circuit is equipped with a heat exchanger (22), which is installed at the opening of the housing (1). The coolant circuit is equipped with a heat channel and a heating element (23). The electrically controlled three-way valve (21) has an inlet and two outlets. The two outlets are respectively connected to the heat channel and the heating element (23). The inlet and one of the two outlets are selectively connected. The heating element (23) is installed on the partition assembly (12). Part of the heating element (23) is located in the upper cavity (111), and the rest is located in the lower cavity (112). The top of the heating element (23) is spaced apart from the top wall of the inner cavity (11) to form a first air outlet channel (113). The bottom of the heating element (23) is spaced apart from the bottom wall of the inner cavity (11) to form a second air outlet channel (114). A first temperature gate (31) is rotatably mounted between the heat exchanger (22) and the heating core (23) and located above the partition assembly (12). The first temperature gate (31) and the partition assembly (12) cooperate to separate the heat exchanger (22) and the heating core (23) in the upper cavity (111). When the inlet of the electrically controlled three-way valve (21) and the outlet corresponding to the hot channel are connected, the first temperature gate (31) can rotate to form a channel for the flow of cold air between the heat exchanger (22) and the heating core (23).

2. The automotive air conditioning unit according to claim 1, characterized by The top of the heating element (23) is tilted away from the front air outlet (13).

3. The automotive air conditioning unit according to claim 1, wherein The automotive air conditioning unit also includes a second temperature door (32), which is rotatably mounted between the heat exchanger (22) and the heating core (23) and located below the partition assembly (12). The second temperature door (32) can cooperate with the partition assembly (12) to separate the heat exchanger (22) and the heating core (23) in the lower cavity (112), or to block the second air outlet channel (114).

4. The automotive air conditioning unit according to any one of claims 1 to 3, characterized in that The partition assembly (12) includes a fixing block (121) and a compensating damper (122). The heating core (23) is fixed to the fixing block (121). The compensating damper (122) is rotatably mounted on the side of the heating core (23) away from the heat exchanger (22). The compensating damper (122) is rotated to connect or disconnect the upper chamber (111) and the lower chamber (112).

5. The automotive air conditioning unit according to claim 4, wherein The partition assembly (12) also includes an air guide plate (123), which is located on the side of the heating core (23) away from the heat exchanger (22) and extends upward in a vertical direction.

6. The automotive air conditioning unit according to claim 5, wherein The air guide plate (123) is integrally formed on the fixing block (121).

7. The automotive air conditioning unit according to claim 5, wherein Along the width direction of the housing (1), at least one side of the housing (1) is provided with an openable and closable side air outlet (15), the side air outlet (15) is located on the side of the air guide plate (123) away from the heating core (23) and communicates with the upper cavity (111).

8. The automotive air conditioning unit of claim 1, wherein The top surface of the housing (1) is provided with an openable and closable upper air outlet (16), which is connected to the upper cavity (111).

9. The automotive air conditioning unit according to claim 8, wherein The top surface of the housing (1) is provided with an openable and closable defrost air outlet (17), which is located between the upper air outlet (16) and the front air outlet (13) and communicates with the upper cavity (111).

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