Air handling unit movement mechanism and air handling unit

Abstract

The invention provides an air handling unit movement mechanism and an air handling unit, and relates to the technical field of vehicle air conditioners, and the air handling unit movement mechanism comprises a mode motor, an acceleration gear and a mode cam; the acceleration gear is assembled on the mode motor, and the acceleration gear and the mode cam form a gear pair; the mode cam is provided with a plurality of track grooves, and the mode cam controls an air door of the air distribution box through the track grooves. The mode motor of the air handling unit movement mechanism is connected with the mode cam through the acceleration gear, the acceleration gear enables the mode cam to rotate in an accelerated mode, then the air handling unit rotates to the corresponding air outlet mode, compared with the prior art, the switching time is shortened by 2.5 times, and the waiting time is shortened.

Description

Technical Field

[0001] This invention relates to the technical field of automotive air conditioning, and in particular to an air conditioning unit moving mechanism and an air conditioning unit. Background Technology

[0002] The automotive air conditioning unit is a key component of the automotive air conditioning system, used to regulate the air environment inside the vehicle and provide a comfortable driving experience for passengers. The air conditioning unit achieves switching between multiple modes through a mode drive mechanism. The mode drive mechanism is usually located in the air conditioning distribution box. The distribution box, evaporator box, and air intake box are assembled to form a relatively closed air intake channel. The airflow enters the air conditioning system through the air intake box, and after heat exchange and rectification by the heat exchanger, the airflow is distributed to the outlets through the dampers, and finally enters the air ducts to flow into the passenger compartment, cooling the passenger compartment and passengers. The airflow passes through the dampers, and the airflow volume (airflow ratio) of each outlet is adjusted by the opening of the dampers.

[0003] Currently, the mode adjustment of the air conditioning unit is achieved by a motor driving a cam to rotate. The cam drives a connecting rod through a track groove, and the connecting rod adjusts the opening of the damper, thereby adjusting the air volume of each air outlet. However, the rotation angle of the air conditioning unit motor is relatively large, and the mode switching time is relatively long, so passengers cannot quickly reach the air outlet state when switching modes. Summary of the Invention

[0004] The purpose of this invention is to provide an air conditioning unit motion mechanism and an air conditioning unit to alleviate the technical problems of large motor rotation angle, long mode switching time, and inability to quickly reach the air outlet state when passengers switch modes.

[0005] The present invention provides a motion mechanism for an air conditioning unit, including a mode motor, an acceleration gear, and a mode cam; the acceleration gear is mounted on the mode motor, and the acceleration gear and the mode cam form a gear pair; the mode cam has multiple track grooves, and the mode cam controls the damper of the air distribution box through the multiple track grooves.

[0006] In an optional embodiment, a linkage assembly is also included, one end of which engages with a track groove and the other end is used to connect to the damper of the air distribution box; the mode cam rotates to cause the linkage assembly to control the damper of the air distribution box.

[0007] In an optional embodiment, the linkage assembly includes a foot-blowing linkage, one end of which is slidably fitted into the track groove of the mode cam; The foot-blowing connecting rod is fixed on the air distribution box, and the foot-blowing connecting rod is connected to the foot-blowing damper on the air distribution box through a connecting rod mechanism.

[0008] In an optional embodiment, the linkage assembly includes a defrosting linkage, one end of which is slidably fitted into the track groove of the mode cam; The defrosting linkage is fixed to the air distribution box, and the defrosting linkage is connected to the defrosting damper on the air distribution box through a linkage mechanism.

[0009] In an optional embodiment, the linkage assembly includes a blowing link; one end of the blowing link is slidably fitted into the track groove of the pattern cam; The blowing rod is fixed on the air distribution box, and the blowing rod is connected to the blowing damper on the air distribution box through a linkage mechanism.

[0010] In an optional embodiment, the air distribution box is further provided with a rear blowing air damper, and the blowing connecting rod is connected to the rear blowing air damper through a connecting rod mechanism.

[0011] In an optional embodiment, the damper is made of one of the following materials: a PP-TD40 and SEBS composition, or a PP-TD40 and EPDM composition. The mode motor of the air conditioning unit motion mechanism provided by the present invention is connected to the mode cam through an acceleration gear. The acceleration gear enables the mode cam to rotate faster, thereby causing the air conditioning unit to rotate to the corresponding air outlet mode. Compared with the prior art, the switching time is increased by 2.5 times, reducing the waiting time.

[0012] The present invention provides an air conditioning unit, including an air distribution box and an air conditioning unit moving mechanism as described in any of the foregoing embodiments, wherein the air conditioning unit moving mechanism is disposed on the air distribution box. In an optional embodiment, the air distribution box is equipped with an evaporator core and a heater core; an expansion valve is provided on the air distribution box, and the expansion valve is connected to the evaporator core. The air distribution box is provided with a warm air core inlet and a warm air core outlet, both of which are connected to the warm air core.

[0013] In an optional embodiment, the air distribution box has an air inlet and an air outlet, a first air duct is formed between the air inlet and the air outlet, and the evaporator core and the warm air core are both disposed in the first air duct. The air distribution box is equipped with a drain pipe and a temperature sensor. The drain pipe is connected to the first air duct, and the temperature sensor is used to measure the temperature inside the vehicle.

[0014] Compared with the prior art, the air conditioning unit provided by the present invention has the air conditioning unit motion mechanism provided by the present invention, and thus has all the beneficial effects of the air conditioning unit motion mechanism provided by the present invention. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the air conditioning unit's motion mechanism provided in an embodiment of the present invention; Figure 2 Gas flow field distribution diagram of the air distribution box of the air conditioning unit provided in the embodiment of the present invention; Figure 3 This is a structural schematic diagram of an air conditioning unit provided in an embodiment of the present invention.

[0017] Icons: 100 - Mode motor; 200 - Acceleration gear; 300 - Mode cam; 400 - Foot blowing linkage; 500 - Defrosting linkage; 600 - Face blowing linkage; 700 - Defrosting damper; 800 - Face blowing damper; 900 - Foot blowing damper; 110 - Rear face blowing damper; 120 - Air inlet; 130 - Expansion valve; 140 - Warm air core inlet; 150 - Warm air core outlet; 160 - Evaporator core; 170 - Drain pipe; 180 - Face blowing defrost outlet; 190 - Foot blowing outlet; 210 - Warm air core; 220 - Temperature sensor; 230 - Rear face blowing outlet. Detailed Implementation

[0018] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate a sequence number, nor should they be interpreted as indicating or implying relative importance.

[0019] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of this application, it should be noted that the terms "inner", "outer", "left", "right", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, 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 application.

[0021] In the description of this application, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0022] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings.

[0023] Example Reference Figure 1 and Figure 2 The present invention provides a motion mechanism for an air conditioning unit, including a mode motor 100, an acceleration gear 200, and a mode cam 300; the acceleration gear 200 is mounted on the mode motor 100, and the acceleration gear 200 and the mode cam 300 form a gear pair; the mode cam 300 has multiple track grooves, and the mode cam 300 controls the damper of the air distribution box through the multiple track grooves.

[0024] In some embodiments, the mode motor 100 of the air conditioning unit motion mechanism is mounted on the air distribution box, and the acceleration gear 200 is connected to the mode motor 100 by a snap-fit ​​method; the mode motor 100 drives the acceleration gear 200 to rotate; the acceleration gear 200 and the mode cam 300 form a gear pair, that is, the acceleration gear 200 meshes with the mode cam 300.

[0025] A track groove is provided on the mode cam 300. When the mode cam 300 rotates, the track groove can control the opening and closing of the air distribution box damper, thereby realizing the switching of different modes of the air conditioning unit.

[0026] Since the mode motor 100 transmits power to the mode cam 300 through the acceleration gear 200, the rotation speed of the mode cam 300 is increased, thereby enabling rapid switching between different modes of the air conditioning unit. Compared with existing technologies, the switching speed is increased by 2.5 times, reducing waiting time and improving passenger comfort.

[0027] In an optional embodiment, a linkage assembly is also included, the linkage assembly including multiple linkages, the air distribution box having multiple dampers, one end of each linkage engaging with a corresponding track groove, and the other end connected to a corresponding damper; The rotation of the mode cam drives the connecting rod in the track groove to move, thereby causing the corresponding damper to open or close.

[0028] In some embodiments, a linkage assembly is provided between the mode cam and the damper of the air distribution box. The mode cam has multiple track grooves, and multiple links of the linkage assembly are respectively matched with multiple track grooves. When the mode cam rotates, it drives the linkage to move, thereby driving different dampers on the air distribution box to open or close.

[0029] In an optional embodiment, the linkage assembly includes a foot blowing linkage 400, one end of which is slidably fitted into the track groove of the mode cam 300. The foot blowing connecting rod 400 is fixed on the air distribution box, and the foot blowing connecting rod 400 is connected to the foot blowing damper 900 on the air distribution box through a connecting rod mechanism.

[0030] In some embodiments, a track groove matching the foot blowing link 400 is provided on the mode cam 300, and one end of the foot blowing link 400 is slidably disposed in the corresponding track groove; when the mode cam 300 rotates, the foot blowing link 400 is connected to the foot blowing damper 900 on the air distribution box through a linkage mechanism, thereby opening or closing the foot blowing damper 900, that is, realizing the activation of the foot blowing mode of the air conditioning unit.

[0031] The foot-blowing damper 900 is connected to the foot-blowing rocker arm, which is connected to the foot-blowing connecting rod 400. The mode cam 300 drives the foot-blowing connecting rod 400 to rotate, which in turn causes the foot-blowing rocker arm to rotate, thereby controlling the opening of the foot-blowing damper 900 and its opening angle.

[0032] In an optional embodiment, the linkage assembly includes a defrost linkage 500, one end of which is slidably fitted into the track groove of the mode cam 300. The defrosting linkage 500 is fixed on the air distribution box, and the defrosting linkage 500 is connected to the defrosting damper 700 on the air distribution box through a linkage mechanism.

[0033] In some embodiments, a track groove matching the defrosting linkage 500 is provided on the mode cam 300, and one end of the defrosting linkage 500 is slidably disposed in the corresponding track groove; when the mode cam 300 rotates, the defrosting linkage 500 is connected to the defrosting damper 700 on the air distribution box through a linkage mechanism, thereby opening or closing the defrosting damper 700, that is, realizing the activation of the defrosting mode of the air conditioning unit.

[0034] In an optional embodiment, the linkage assembly includes a blowing linkage 600; one end of the blowing linkage 600 is slidably fitted into the track groove of the pattern cam 300. The blowing rod 600 is fixed on the air distribution box, and the blowing rod 600 is connected to the blowing damper 800 on the air distribution box through a linkage mechanism.

[0035] In some embodiments, a track groove matching the blowing rod 600 is provided on the mode cam 300, and one end of the blowing rod 600 is slidably disposed in the corresponding track groove; when the mode cam 300 rotates, the blowing rod 600 is connected to the blowing damper 800 on the air distribution box through a linkage mechanism, thereby opening or closing the blowing damper 800, that is, realizing the opening of the air outlet mode of the air conditioning unit.

[0036] The mode cam 300 is provided with a defrost track groove, a foot blowing track groove and a face blowing track groove respectively; one end of the face blowing connecting rod 600 is assembled in the face blowing track groove, one end of the foot blowing connecting rod 400 is assembled in the foot blowing track groove, and one end of the defrost connecting rod 500 is assembled in the defrost track groove.

[0037] During the rotation of the mode cam 300, only the blowing trajectory groove causes the blowing linkage 600 to open the blowing damper on the air distribution box through the linkage mechanism, thus realizing the blowing mode; As the mode cam continues to rotate at a certain angle, the trajectory of the blowing track groove will no longer cause the trajectory of the blowing link to change, meaning that the blowing damper remains open. At this time, the foot-blowing track groove causes the foot-blowing link to open the foot-blowing damper on the air distribution box through the linkage mechanism, thus realizing the foot-blowing mode. Since the foot-blowing damper and the blowing damper open at the same time, the blowing mode of blowing both the face and the feet is realized.

[0038] As the mode cam continues to rotate at a certain angle, the trajectories of the blowing surface track groove and the blowing foot track groove will no longer cause changes in the trajectories of the blowing surface connecting rod and the blowing foot connecting rod. That is, the blowing surface damper and the blowing foot damper remain open at this time. During this process, the defrosting track groove causes the defrosting connecting rod to open the defrosting damper on the air distribution box through the linkage mechanism, thus realizing the defrosting mode. That is, at this time, the blowing foot damper, the blowing surface damper, and the defrosting damper are all open, realizing the blowing surface and blowing foot defrosting mode.

[0039] As the mode cam continues to rotate a certain angle, the trajectory of the blowing surface track groove or the blowing foot track groove causes the trajectory of the blowing surface connecting rod or the blowing foot connecting rod to change; that is, at this time, the blowing foot damper or the blowing surface damper is closed; the trajectory of the defrosting track groove does not cause the trajectory of the defrosting connecting rod to change, that is, at this time, the defrosting damper remains open, thus realizing the blowing foot defrosting or blowing surface defrosting; as the mode cam continues to rotate a certain angle, the trajectories of the blowing surface track groove, the blowing foot track groove, and the defrosting track groove cause the trajectory of the blowing surface connecting rod, the blowing foot connecting rod, or the defrosting connecting rod to change, thus realizing the blowing foot or defrosting mode.

[0040] The defrosting trajectory groove, foot blowing trajectory groove, and face blowing trajectory groove are ingeniously designed and work together to achieve switching between seven modes: face blowing, face blowing and foot blowing, face blowing and foot defrosting, foot blowing, foot blowing and defrosting, defrosting, and face blowing and defrosting.

[0041] In an optional embodiment, the air distribution box is further provided with a rear blowing air damper 110, and the blowing connecting rod 600 is connected to the rear blowing air damper 110 through a connecting rod mechanism.

[0042] In some embodiments, the air distribution box also has a rear blowing air damper 110, which is connected to the blowing link 600 via a linkage mechanism. The blowing link 600 simultaneously controls the opening and closing of the blowing air damper 800 and the rear blowing air damper 110.

[0043] The mode cam 300 is provided with multiple track grooves. The blowing rod 600, the defrosting rod 500, and the foot blowing rod 400 all have corresponding track grooves on the mode cam 300. The mode cam 300 enables the blowing rod 600, the defrosting rod 500, and the foot blowing rod 400 to cooperate with each other to achieve the switching of seven modes: blowing face, blowing face and blowing feet, blowing face and blowing feet and defrosting, blowing feet, blowing feet and defrosting, defrosting, and blowing face and defrosting.

[0044] This solution addresses the problem of traditional air conditioning units operating in three modes: blowing air to the face, blowing air to the feet, blowing air to the feet, defrosting, and blowing air to the feet while defrosting. In autumn and winter, when the airflow passes through the warm air core 210 for heat exchange and is then blown out of the air conditioning system via the mode damper, it is impossible to simultaneously blow air to the face, defrost, and blow air to the feet, resulting in passengers experiencing a hot head and cold feet, leading to poor comfort. Furthermore, it solves the problem that most existing air conditioning units use a mode motor 100 that directly drives the mode cam 300, which has a large rotation angle, resulting in a long mode switching time and easily causing passenger complaints.

[0045] In an optional embodiment, the damper is made of one of the following materials: a PP-TD40 and SEBS composition, or a PP-TD40 and EPDM composition.

[0046] The damper is made of a combination of PP-TD40 and SEBS, or a combination of PP-TD40 and EPDM. PP-TD40 is a high-performance composite material. SEBS is a linear triblock copolymer with polystyrene as the end segment and ethylene-butene copolymer obtained by hydrogenation of polybutadiene as the middle elastic block. EPDM is a copolymer of ethylene, propylene, and a small amount of non-conjugated diene, and is a type of ethylene propylene rubber.

[0047] The mode motor 100 of the air conditioning unit motion mechanism provided by the present invention is connected to the mode cam 300 through the acceleration gear 200. The acceleration gear 200 enables the mode cam 300 to rotate faster, thereby causing the air conditioning unit to rotate to the corresponding air outlet mode. Compared with the prior art, the switching time is increased by 2.5 times, and the waiting time is reduced.

[0048] Refer to 2 and Figure 3The present invention provides an air conditioning unit, including an air distribution box and an air conditioning unit moving mechanism as described in any of the foregoing embodiments, wherein the air conditioning unit moving mechanism is disposed on the air distribution box. In an optional embodiment, an evaporator core 160 is assembled inside the air distribution box; an expansion valve 130 is provided on the air distribution box, and the expansion valve 130 is connected to the evaporator core 160. In an optional embodiment, a warm air core 210 is installed inside the air distribution box; a warm air core inlet 140 and a warm air core outlet 150 are provided on the air distribution box, and both the warm air core inlet 140 and the warm air core outlet 150 are connected to the warm air core 210.

[0049] In an optional embodiment, the air distribution box has an air inlet 120 and an air outlet, a first air duct is formed between the air inlet 120 and the air outlet, and the evaporator core 160 and the warm air core 210 are both disposed in the first air duct. The air distribution box is equipped with a drain pipe 170 and a temperature sensor 220. The drain pipe 170 is connected to the first air duct, and the temperature sensor 220 is used to measure the temperature inside the vehicle.

[0050] In some embodiments, the air distribution box of the air conditioning unit is equipped with an air conditioning unit movement mechanism; see reference Figure 2 The air distribution box has multiple air outlets, including a face defrosting air outlet 180, a foot blowing air outlet 190, and a rear face blowing air outlet 230.

[0051] Airflow passes through the regulating distributor of the air conditioning unit's moving mechanism. The distributor distributes air to select the opening and closing of different air outlet dampers, allowing different modes of airflow to enter the passenger compartment. The air outlet dampers adjust the airflow mode by adjusting the air outlet pressure drop value. This enables the adjustment of 7 airflow modes: whole vehicle face blowing, face and feet blowing, face and feet blowing defrosting, feet blowing, feet blowing defrosting, defrosting, and face blowing defrosting.

[0052] The mode motor 100 is mounted on the air distribution box, and the acceleration gear 200 is assembled on the mode motor 100. The acceleration gear 200 transmits rotation to the mode cam 300 through a gear pair. The mode cam 300 drives the connecting mechanism of the sliding pair to form a rotating pair with the air distribution box housing, thereby driving the air damper to rotate and realizing mode adjustment. At the same time, the mode cam 300 realizes the following modes through the track groove: blowing face, blowing face and feet, blowing face and feet defrosting, blowing feet, blowing feet defrosting, defrosting, and blowing face defrosting. The transmission of the acceleration gear 200 quickly rotates the air conditioning unit to the corresponding air outlet mode, making the mode switching time 2.5 times faster than the previous existing technology, greatly improving the switching time, and allowing passengers to quickly reach the air outlet state when switching modes.

[0053] Air entering through the air inlet 120 of the air distribution box passes through the first air duct and is discharged through the air outlet. An evaporator core 160 and a warm air core 210 are installed in the first air duct. When cooling is required, air enters through the air inlet 120, passes through the filter and blower, and then passes through the evaporator core 160 to exchange heat with it. The temperature of the evaporator core 160 is relatively low, so the temperature of the air passing through the evaporator core 160 is reduced. The cooled air is then blown out according to the mode of the air conditioning unit.

[0054] When heating is required, air still enters the first air duct from the air inlet 120, passes through the warm air core 210, and exchanges heat with the warm air core 210. After the air temperature rises, it is blown out according to the mode of the air conditioning unit.

[0055] The inlet 140 and outlet 150 of the air distribution box are both connected to the cooling circulation pipeline. High-temperature water enters the air core 210 from the inlet 140, raising the temperature of the air core 210. The high-temperature water passing through the air core 210 enters the cooling circulation pipeline from the outlet 150. The air entering the first air duct exchanges heat with the air core 210, thereby raising the air temperature. The air that has exchanged heat with the air core 210 is discharged through the air distribution box. The air conditioning unit's movement mechanism enables the air distribution box to achieve seven modes of adjustment, thereby realizing seven modes of heating function.

[0056] A drain pipe 170 is installed on the air distribution box. When the cooling mode is turned on, the evaporator core 160 exchanges heat with the air entering from the first air duct, causing the water vapor in the air to condense and form condensate. The condensate flows downward and accumulates before entering the drain pipe 170 and being discharged from the drain pipe 170.

[0057] Temperature sensor 220 is used to detect the actual temperature inside the vehicle. The control system adjusts the blower speed, air intake and air output based on the temperature feedback from temperature sensor 220. Compared with the prior art, the air conditioning unit provided by the present invention has the air conditioning unit motion mechanism provided by the present invention, and thus has all the beneficial effects of the air conditioning unit motion mechanism provided by the present invention.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A moving mechanism for an air conditioning unit, characterized in that, It includes a mode motor (100), an acceleration gear (200), and a mode cam (300); the acceleration gear (200) is mounted on the mode motor (100), and the acceleration gear (200) and the mode cam (300) form a gear pair; the mode cam (300) has multiple track grooves, and the mode cam (300) controls the damper of the air distribution box through the multiple track grooves.

2. The air conditioning unit motion mechanism according to claim 1, characterized in that, It also includes a linkage assembly, which includes multiple linkages. The air distribution box has multiple dampers. One end of each linkage is engaged with a corresponding track groove, and the other end is connected to a corresponding damper. The rotation of the mode cam drives the connecting rod in the track groove to move, thereby causing the corresponding damper to open or close.

3. The air conditioning unit moving mechanism according to claim 2, characterized in that, The linkage assembly includes a foot blowing link (400), one end of which is slidably fitted into the track groove of the mode cam (300); The foot blowing connecting rod (400) is fixed on the air distribution box, and the foot blowing connecting rod (400) is connected to the foot blowing damper (900) on the air distribution box through a connecting rod mechanism.

4. The air conditioning unit moving mechanism according to claim 2, characterized in that, The linkage assembly includes a defrost linkage (500), one end of which is slidably fitted into the track groove of the mode cam (300); The defrosting linkage (500) is fixed on the air distribution box, and the defrosting linkage (500) is connected to the defrosting damper (700) on the air distribution box through a linkage mechanism.

5. The air conditioning unit motion mechanism according to claim 2, characterized in that, The linkage assembly includes a blowing link (600); one end of the blowing link (600) is slidably fitted in the track groove of the pattern cam (300); The blowing rod (600) is fixed on the air distribution box, and the blowing rod (600) is connected to the blowing damper (800) on the air distribution box through a linkage mechanism.

6. The air conditioning unit moving mechanism according to claim 5, characterized in that, The air distribution box is also equipped with a rear blowing air damper (110), and the blowing connecting rod (600) is connected to the rear blowing air damper (110) through a connecting rod mechanism.

7. The air conditioning unit moving mechanism according to claim 1, characterized in that, The damper is made of either a PP-TD40 and SEBS composition or a PP-TD40 and EPDM composition.

8. An air conditioning unit, characterized in that, It includes an air distribution box and an air conditioning unit movement mechanism as described in any one of claims 1-7, wherein the air conditioning unit movement mechanism is disposed on the air distribution box.

9. The air conditioning unit according to claim 8, characterized in that, The air distribution box is equipped with an evaporator core (160) and a heater core (210); an expansion valve (130) is provided on the air distribution box, and the expansion valve (130) is connected to the evaporator core (160); The air distribution box is provided with a warm air core inlet (140) and a warm air core outlet (150), and both the warm air core inlet (140) and the warm air core outlet (150) are connected to the warm air core (210).

10. The air conditioning unit according to claim 9, characterized in that, The air distribution box has an air inlet (120) and an air outlet, and a first air duct is formed between the air inlet (120) and the air outlet. The evaporator core (160) and the warm air core (210) are both arranged in the first air duct. The air distribution box is equipped with a drain pipe (170) and a temperature sensor (220). The drain pipe (170) is connected to the first air duct, and the temperature sensor (220) is used to measure the temperature inside the vehicle.

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