An automotive air conditioning performance testing device

Abstract

The present invention provides an automotive air-conditioning performance detection device, which relates to the technical field of automotive air-conditioning performance detection. It includes a detection chamber. A working cavity is opened in the detection chamber, and a partition plate is fixedly installed in the working cavity. The partition plate can divide the working cavity into a liquid storage cavity and a detection chamber arranged vertically. A plurality of water outlet holes are opened on the partition plate, and a plurality of piston rods are slidably installed in the liquid storage cavity. The present invention provides an automotive air-conditioning performance detection device. By setting the detection chamber, partition plate, piston rod, scraping rod and driving mechanism, it can simulate rainy days to realize the function detection of the vehicle's air conditioner during rainy driving. At the same time, it can clean the water outlet holes and the bottom water outlets of the water outlet holes, ensure the size of the simulated raindrops, thus ensure the simulation of different rain intensities, reduce the insufficient water output caused by the blockage of the water outlet holes, resulting in the decrease of the simulated rain intensity and affecting the result of the automotive air-conditioning performance detection, and ensure the accuracy of the detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive air conditioning performance detection, and particularly to an automotive air conditioning performance detection device. Background Art

[0002] Automotive air conditioning performance detection is a process of evaluating and testing the performance of an automotive air conditioning system under various working conditions, aiming to provide a more comfortable and safe driving experience for drivers. In actual situations, when detecting the performance of an automotive air conditioning system, the performance of the compressor of the automotive air conditioning is usually detected. In order to ensure the performance of the automotive air conditioning in actual vehicle applications, however, when measuring on outdoor roads, various uncontrollable factors will affect the test results. In addition, factors such as weather and traffic need to be considered, resulting in an extended test cycle and increased detection costs. Therefore, most tests are carried out in an indoor environmental wind tunnel.

[0003] Current indoor environmental wind tunnels can simulate rainy days and dusty roads. However, when simulating dusty roads, a large amount of dust will be generated. During the detection process, the simulation rain nozzles may be blocked due to dust, and when simulating rainy days, the simulation effect may be affected, thus affecting the test results of rainy days. Summary of the Invention

[0004] Based on the technical problems existing in the background art, the present invention proposes an automotive air conditioning performance detection device.

[0005] An automotive air conditioning performance detection device proposed by the present invention includes a detection chamber. A working cavity is provided in the detection chamber, and a partition plate is fixedly installed in the working cavity. The partition plate can divide the working cavity into a liquid storage cavity and a detection chamber arranged up and down.

[0006] A plurality of water outlet holes are provided on the partition plate. A plurality of piston rods are slidably installed in the liquid storage cavity, and the plurality of piston rods are arranged in one-to-one correspondence with the plurality of water outlet holes. The diameter of the piston rod is the same as the inner diameter of the water outlet hole, and the piston rod can be inserted into the water outlet hole.

[0007] A scraping rod is rotatably installed on the bottom surface of the partition plate, and the scraping rod can scrape the bottom opening position of the water outlet hole.

[0008] A driving mechanism is installed on the detection chamber. The driving mechanism can drive the scraping rod to rotate on the bottom surface of the partition plate, and the driving mechanism can also drive the piston rod to reciprocate up and down in the liquid storage cavity.

[0009] Preferably, the driving mechanism includes a motor, a worm, a driving shaft rod and a worm wheel; the motor is fixedly installed on the detection box chamber, the worm is fixedly installed on the output shaft of the motor, the worm is rotatably installed on the detection box chamber, the driving shaft rod is rotatably installed on the detection box chamber, and one end of the driving shaft rod penetrates through the liquid storage cavity, the isolation plate and is fixedly connected with the scraping rod, the worm wheel is sleeved on the driving shaft rod, and the worm wheel meshes with the worm.

[0010] Preferably, the driving mechanism further includes a driving gear, a mounting plate, a rotating cylinder, a driven gear and a guiding component; the driving gear is sleeved on the driving shaft rod, the mounting plate is fixedly installed in the liquid storage cavity, the rotating cylinder is rotatably installed on the mounting plate, the driven gear is sleeved on the rotating cylinder, and the driven gear meshes with the driving gear;

[0011] The piston rod slides through the rotating cylinder, and the guiding component is used to convert the rotational movement of the rotating cylinder into the lifting movement of the piston rod.

[0012] Preferably, the guiding component includes a limiting plate, a hexagonal rod and a sliding shaft; the limiting plate is fixedly installed in the liquid storage cavity and is located above the mounting plate, the hexagonal rod is fixedly connected to the top end of the piston rod, the hexagonal rod slides through the limiting plate, the sliding shaft is fixedly connected to the outer periphery of the piston rod, and a guiding groove slidably matched with the sliding shaft is formed in the inner wall of the rotating cylinder.

[0013] Preferably, a plugging mechanism is installed on the isolation plate; the plugging mechanism can plug the water outlet hole;

[0014] When the piston rod rises in the water outlet hole, the plugging mechanism plugs the water outlet hole, so that a negative pressure is formed in the water outlet hole. When the piston rod disengages from the water outlet hole, the water in the liquid storage cavity enters the water outlet hole.

[0015] Preferably, the plugging mechanism includes a plugging block, a closing component and an opening component; a receiving groove capable of receiving the plugging block is formed in the inner wall of the water outlet hole, the plugging block is slidably installed in the receiving groove, and the plugging block can plug the water outlet hole;

[0016] The closing component can drive the plugging block to slide from the receiving groove into the water outlet hole and plug the water outlet hole;

[0017] The opening component is used to drive the plugging block to slide and be received into the receiving groove from the water outlet hole and open the water outlet hole.

[0018] Preferably, the closing assembly includes a limiting block, a constant force spring and a force applying rod; the limiting block is fixedly connected to the plugging block, a limiting chute slidably engaged with the limiting block is formed in the receiving groove, a force applying groove is formed in the partition board, the inner ring end of the constant force spring is fixedly installed in the force applying groove, the outer ring end of the constant force spring is fixedly connected to the force applying rod, and one end of the force applying rod away from the constant force spring is fixedly connected to the limiting block.

[0019] Preferably, the opening assembly includes a first permanent magnet block and a second permanent magnet block; the first permanent magnet block is fixedly connected to the limiting block, an installation groove adapted to the second permanent magnet block is formed in the outer periphery of the bottom end of the piston rod, and the second permanent magnet block is fixedly installed in the installation groove.

[0020] Preferably, a limiting cylinder is fixedly installed on the top surface of the partition board, the piston rod slidably penetrates through the limiting cylinder, a water inlet hole is formed in the limiting cylinder, and the bottom end of the rotating cylinder is rotatably installed at the top end of the limiting cylinder.

[0021] Preferably, it further includes a door panel and a fan; the detection chamber is open at one end, and the door panel can block the opening of the detection chamber;

[0022] A blowing chamber is formed in the detection box, and the fan is installed in the blowing chamber.

[0023] The automotive air conditioner performance detection device proposed by the present invention has the following beneficial effects: through the detection box, partition board, piston rod, scraping rod and driving mechanism provided, it can simulate rainy days to realize the function detection of the vehicle's air conditioner during rainy driving, and at the same time can clean the water outlet hole and the bottom water outlet of the water outlet hole, and can ensure the size of the simulated raindrops, so as to ensure the simulation of different rain intensities, reduce the insufficient water output caused by the blockage of the water outlet hole, resulting in the decrease of the simulated rain intensity and affecting the detection result of the automotive air conditioner performance, and ensure the accuracy of the detection result. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of an automotive air conditioner performance detection device proposed by the present invention;

[0025] Figure 2 It is a side sectional view of an automotive air conditioner performance detection device proposed by the present invention;

[0026] Figure 3 It is a partial sectional view of the liquid storage cavity in an automotive air conditioner performance detection device proposed by the present invention;

[0027] Figure 4 It is an automotive air conditioner performance detection device proposed by the present invention Figure 3 The enlarged view at A;

[0028] Figure 5 Schematic structural diagram of a piston rod, hexagonal rod, sliding shaft, and second permanent magnet block in an automotive air-conditioning performance detection device proposed by the present invention;

[0029] Figure 6 Developed schematic diagram of a guide groove in an automotive air-conditioning performance detection device proposed by the present invention;

[0030] Figure 7 Schematic structural diagram of a plugging block, limiting block, and first permanent magnet block in an automotive air-conditioning performance detection device proposed by the present invention.

[0031] In the figure: 1, detection chamber; 2, partition board; 3, liquid storage cavity; 4, detection chamber; 5, water outlet hole; 6, piston rod; 7, scraping rod; 8, motor; 9, worm; 10, drive shaft rod; 11, worm gear; 12, driving gear; 13, mounting plate; 14, rotating cylinder; 15, driven gear; 16, limiting plate; 17, hexagonal rod; 18, sliding shaft; 19, guide groove; 20, plugging block; 21, limiting block; 22, constant force spring; 23, force application rod; 24, first permanent magnet block; 25, second permanent magnet block; 26, limiting cylinder; 27, door panel; 28, fan; 29, water inlet hole. Detailed implementation manners

[0032] Refer to Figures 1-7, the present invention provides an automotive air conditioner performance detection device, including a detection chamber 1. A working chamber is provided inside the detection chamber 1, and a partition plate 2 is fixedly installed in the working chamber. The partition plate 2 can divide the working chamber into a liquid storage chamber 3 and a detection chamber 4 arranged vertically. The vehicle conducts a simulation test in the detection chamber 4. The liquid storage chamber 3 is used to store water. When simulating rainy-day driving, the water in the liquid storage chamber 3 drops to simulate rain. A plurality of water outlet holes 5 are provided on the partition plate 2. A plurality of piston rods 6 are slidably installed in the liquid storage chamber 3, and the plurality of piston rods 6 are arranged in one-to-one correspondence with the plurality of water outlet holes 5. The diameter of the piston rod 6 is the same as the inner diameter of the water outlet hole 5, and the piston rod 6 can be inserted into the water outlet hole 5. When simulating the performance detection of the automotive air conditioner, various simulations are usually required, such as rainy days, dusty roads, etc. When simulating, the vehicle travels in the detection chamber 4. Two sets of rotating rollers are installed in the detection chamber 4. When the vehicle is traveling, the wheels rotate on the rotating rollers. When the vehicle rotates, the vehicle drives the rotating rollers to rotate, so that the vehicle and the detection chamber 1 remain in a relatively static state. Then, the piston rod 6 reciprocates up and down. When the bottom end of the piston rod 6 rises and disengages from the water outlet hole 5 and enters the liquid storage chamber 3, at this time, the water outlet hole 5 and the liquid storage chamber 3 are in a communicating state. Under the action of water pressure, water enters the water outlet hole 5 and drips down. The piston rod 6 then continues to descend into the water outlet hole 5 to block the water outlet hole 5. At this time, the liquid storage chamber 3 and the water outlet hole 5 are not in communication, so that the water can drip in the form of water droplets to simulate a rainy day and reduce the occurrence of water columns. The amount of water entering the water outlet hole 5 can be controlled by the reciprocating frequency of the piston rod 6 rising and falling, so as to control the size of the raindrops. At the same time, when the piston rod 6 descends in the water outlet hole 5, dust and other dirt adhered to the inner wall of the water outlet hole 5 can be pushed out by the piston rod 6, thus completing the cleaning operation. In actual situations, some dust may also adhere to the bottom surface of the partition plate 2. Long-term accumulation may cause dirt to accumulate on the bottom surface of the partition plate 2, affecting the water output of the water outlet hole 5 and the size of the raindrops. Therefore, a scraping rod 7 is provided. A scraping rod 7 is rotatably installed on the bottom surface of the partition plate 2. The scraping rod 7 can scrape the bottom opening position of the water outlet hole 5. The scraping rod 7 rotates to scrape the outlet position of the water outlet hole 5, so as to ensure the cleanliness of the outlet position of the water outlet hole 5, reduce the influence of dirt accumulation on the water output, and ensure the simulation of the rainy-day condition. The vehicle turns on the air conditioner in the detection chamber 4, and the working performance of the automotive air conditioner in rainy days is detected by various sensors (the air humidity is relatively high on rainy days. When the air conditioner cools, it needs to remove the moisture in the air first, which will reduce the cooling efficiency of the air conditioner and slow down the temperature reduction speed inside the vehicle; there is more rain on rainy days, and the air conditioner will generate more condensed water during operation, which will increase the burden on the air conditioner drainage system. If the drain pipe is blocked, rainwater may flow back into the vehicle, affecting the interior environment).

[0033] Such as Figure 2 and Figure 3As shown in the figure, a driving mechanism is installed on the detection chamber 1. The driving mechanism can drive the scraping rod 7 to rotate on the bottom surface of the isolation plate 2, and the driving mechanism can also drive the piston rod 6 to reciprocate up and down in the liquid storage cavity 3. The driving mechanism includes a motor 8, a worm 9, a driving shaft rod 10 and a worm gear 11. The motor 8 is fixedly installed on the detection chamber 1. The worm 9 is fixedly installed on the output shaft of the motor 8. The worm 9 is rotatably installed on the detection chamber 1. The driving shaft rod 10 is rotatably installed on the detection chamber 1, and one end of the driving shaft rod 10 penetrates through the liquid storage cavity 3, the isolation plate 2 and is fixedly connected to the scraping rod 7. The worm gear 11 is sleeved on the driving shaft rod 10, and the worm gear 11 meshes with the worm 9. When the motor 8 works, the motor 8 drives the worm 9 to rotate, and then the worm 9 drives the worm gear 11 to rotate. The worm gear 11 drives the driving shaft rod 10 to rotate synchronously, and the driving shaft rod 10 drives the scraping rod 7 to rotate synchronously, so as to realize the scraping and cleaning of the bottom opening of the water outlet hole 5 by the scraping rod 7.

[0034] As Figure 2 and Figure 3 shown in the figure, the driving mechanism further includes a driving gear 12, a mounting plate 13, a rotating cylinder 14, a driven gear 15 and a guiding component. The driving gear 12 is sleeved on the driving shaft rod 10. The mounting plate 13 is fixedly installed in the liquid storage cavity 3. The rotating cylinder 14 is rotatably installed on the mounting plate 13 to ensure the stability of the rotation of the rotating cylinder 14. The driven gear 15 is sleeved on the rotating cylinder 14, and the driven gear 15 meshes with the driving gear 12. The piston rod 6 slides through the rotating cylinder 14. The guiding component is used to convert the rotation action of the rotating cylinder 14 into the lifting action of the piston rod 6. When simulating rainfall, the motor 8 works to drive the worm 9 to rotate. The worm 9 drives the worm gear 11 to rotate. The worm gear 11 synchronously drives the driving shaft rod 10 to rotate. The driving shaft rod 10 drives the driving gear 12 to rotate. The driving gear 12 drives the driven gear 15 to rotate. The driven gear 15 drives the rotating cylinder 14 to rotate synchronously, and then drives the piston rod 6 to reciprocate up and down in the rotating cylinder 14 through the guiding component, so as to realize the simulation of raindrops falling and simulate a rainy day.

[0035] As Figure 3 , Figure 5 and Figure 6As shown in the figure, the guiding assembly includes a limiting plate 16, a hexagonal rod 17 and a sliding shaft 18; the limiting plate 16 is fixedly installed in the liquid storage cavity 3 and is located above the mounting plate 13. The hexagonal rod 17 is fixedly connected to the top end of the piston rod 6. The hexagonal rod 17 slidably penetrates through the limiting plate 16 to prevent the hexagonal rod 17 and the piston rod 6 from rotating, ensuring that the piston rod 6 only makes reciprocating lifting movements. The sliding shaft 18 is fixedly connected to the outer periphery of the piston rod 6. A guiding groove 19 that slidably cooperates with the sliding shaft 18 is provided on the inner wall of the rotating cylinder 14. During actual operation, when the rotating cylinder 14 rotates, since the piston rod 6 cannot rotate due to the hexagonal rod 17, when the rotating cylinder 14 rotates, the sliding shaft 18 slides in the guiding groove 19. Similarly, the sliding shaft 18 cannot rotate, and the sliding shaft 18 can only slide obliquely in the guiding groove 19, thereby realizing the reciprocating lifting movement of the sliding shaft 18 and the piston rod 6. The structure is simple and the operation is convenient.

[0036] As Figure 3 and Figure 4 shown in the figure, a blocking mechanism is installed on the isolation plate 2; the blocking mechanism can block the water outlet hole 5. When the piston rod 6 rises in the water outlet hole 5, the blocking mechanism blocks the water outlet hole 5, thereby creating a negative pressure in the water outlet hole 5. When the piston rod 6 disengages from the water outlet hole 5, the water in the liquid storage cavity 3 enters the water outlet hole 5. When the blocking mechanism blocks the water outlet hole 5 and the piston rod 6 has not disengaged from the water outlet hole 5, at this time, the water outlet hole 5 is in a relatively closed space. As the piston rod 6 continues to rise in the water outlet hole 5, the volume of the water outlet hole 5 becomes larger, but the amount of gas remains unchanged. As the piston rod 6 disengages from the top end of the water outlet hole 5, under the action of air pressure and water pressure, the water is forced into the water outlet hole 5, which can better control the water output (when only relying on water pressure, the water output cannot be accurately controlled, and it may be greatly affected by interference factors, resulting in inconsistent water output and even the situation of water flowing in a water column). When the piston rod 6 descends, the piston rod 6 enters the water outlet hole 5 and continues to descend to apply pressure, while opening the blocking mechanism at the same time. The water in the water outlet hole 5 drips under the action of pressure (it can play a certain accelerating role under the action of pressure, thus simulating the speed at which natural raindrops fall, making the simulation more realistic), making the detection result more accurate and reducing the influencing factors on the detection result.

[0037] As Figure 3 , Figure 4 and Figure 7 shown in the figure, the blocking mechanism includes a blocking block 20, a closing assembly and an opening assembly; a receiving groove capable of receiving the blocking block 20 is provided on the inner wall of the water outlet hole 5. The blocking block 20 is slidably installed in the receiving groove. The blocking block 20 can block the water outlet hole 5. The number of the blocking blocks 20 is four, and the four blocking blocks 20 can enter and exit the water outlet hole 5 synchronously, so as to facilitate the opening and blocking states of the water outlet hole 5. The closing assembly drives the blocking block 20 to enter the water outlet hole 5, and then the opening assembly drives the blocking block 20 to disengage from the water outlet hole 5.

[0038] As Figure 3 , Figure 4 and Figure 7 shown in, the closing component can drive the plugging block 20 to slide from the receiving groove into the water outlet hole 5 and plug the water outlet hole 5. The closing component includes a limiting block 21, a constant force spring 22 and a force applying rod 23. The limiting block 21 is fixedly connected to the plugging block 20. A limiting chute slidably matched with the limiting block 21 is formed in the receiving groove. A force applying groove is formed in the isolation plate 2. The inner ring end of the constant force spring 22 is fixedly installed in the force applying groove. The outer ring end of the constant force spring 22 is fixedly connected to the force applying rod 23. One end of the force applying rod 23 away from the constant force spring 22 is fixedly connected to the limiting block 21. Under the torque action of the constant force spring 22, the limiting block 21 and the plugging block 20 slide synchronously, so that the plugging block 20 slides from the receiving groove into the water outlet hole 5. Due to the characteristics of the constant force spring 22, the pushing force acting on the limiting block 21 always remains the same, thus ensuring the firmness and stability of the four plugging blocks 20 against each other. At the same time, when driving the four plugging blocks 20 to open, only an acting force greater than the torque of the constant force spring 22 needs to be applied to push the limiting block 21 and the plugging block 20 to slide back to their original positions.

[0039] As Figure 2 , Figure 3 , Figure 5 and Figure 7 shown in, the opening component is used to drive the plugging block 20 to slide and be received from the water outlet hole 5 into the receiving groove and open the water outlet hole 5. The opening component includes a first permanent magnet block 24 and a second permanent magnet block 25. The first permanent magnet block 24 is fixedly connected to the limiting block 21. An installation groove adapted to the second permanent magnet block 25 is formed in the outer periphery of the bottom end of the piston rod 6. The second permanent magnet block 25 is fixedly installed in the installation groove. When it is necessary to open the four plugging blocks 20, when the piston rod 6 descends, the second permanent magnet block 25 descends to a certain position in the water outlet hole 5. The second permanent magnet block 25 and the first permanent magnet block 24 generate a repulsive force. The first permanent magnet block 24 slides back to its original position in the limiting chute. Since the distance between the two permanent magnet blocks becomes larger, the repulsive force gradually becomes smaller. However, due to the constant force action of the constant force spring 22, the stable sliding and receiving of the plugging block 20 can be ensured.

[0040] As Figure 2 shown in, a limiting cylinder 26 is fixedly installed on the top surface of the isolation plate 2. The piston rod 6 slidably penetrates through the limiting cylinder 26. A water inlet hole 29 is formed in the limiting cylinder 26. The bottom end of the rotating cylinder 14 is rotatably installed at the top end of the limiting cylinder 26. The limiting cylinder 26 can ensure the smooth entry and exit of the piston rod 6 from the water outlet hole 5, reduce jamming, and ensure the simulation effect. When water enters the water outlet hole 5, the bottom end of the piston rod 6 needs to cross the water inlet hole 29 to ensure that water enters the water outlet hole 5.

[0041] AsFigure 2 As shown, it further includes a door panel 27 and a fan 28; the detection chamber 4 has a single-end opening, and the door panel 27 can block the opening of the detection chamber 4 for opening and closing the detection chamber 4 to facilitate the entry of the vehicle. A blowing chamber is provided in the detection chamber 1, and the fan 28 is installed in the blowing chamber to simulate the situation of rain and wind, ensuring the authenticity of the simulation and the accuracy of the detection of the performance of the automotive air conditioner (when it is raining and windy, rain and wind may reduce the temperature on the surface of the air conditioner condenser, which to a certain extent helps the condenser to dissipate heat, thereby possibly slightly improving the refrigeration efficiency of the air conditioner).

[0042] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An automobile air conditioning performance testing device, characterized in that: The detection chamber (1) comprises a working chamber, wherein the detection chamber (1) has a partition plate (2) fixedly installed in the working chamber, and the partition plate (2) is capable of dividing the working chamber into a liquid storage chamber (3) and a detection chamber (4) arranged in an upper and lower manner; The isolation plate (2) is provided with a plurality of water outlet holes (5), a plurality of piston rods (6) are slidably mounted in the liquid storage chamber (3), and the plurality of piston rods (6) are arranged in a one-to-one correspondence with the plurality of water outlet holes (5), the diameter of the piston rod (6) is the same as the inner diameter of the water outlet hole (5), and the piston rod (6) can be inserted into the water outlet hole (5); A sweeping rod (7) is rotatably mounted on the bottom surface of the isolation plate (2), and the sweeping rod (7) is capable of scraping the bottom opening of the water outlet hole (5); A driving mechanism is installed on the detection chamber (1), and the driving mechanism can drive the sweeping rod (7) to rotate on the bottom surface of the isolation plate (2), and the driving mechanism can also drive the piston rod (6) to reciprocate and rise and fall in the liquid storage chamber (3); A blocking mechanism is installed on the isolation plate (2); the blocking mechanism is capable of blocking the water outlet hole (5); When the piston rod (6) rises in the water outlet hole (5), the blocking mechanism blocks the water outlet hole (5), thereby forming a negative pressure in the water outlet hole (5); when the piston rod (6) is separated from the water outlet hole (5), water in the liquid storage chamber (3) enters the water outlet hole (5).

2. The automobile air conditioning performance testing device according to claim 1, characterized in that: The driving mechanism comprises a motor (8), a worm (9), a driving shaft (10) and a worm wheel (11); the motor (8) is fixedly mounted on the detection box chamber (1), the worm (9) is fixedly mounted on the output shaft of the motor (8), the worm (9) is rotatably mounted on the detection box chamber (1), the driving shaft (10) is rotatably mounted on the detection box chamber (1), and one end of the driving shaft (10) passes through the liquid storage chamber (3) and the isolation plate (2) and is fixedly connected to the sweeping rod (7), the worm wheel (11) is sleeved on the driving shaft (10), and the worm wheel (11) is meshed with the worm (9).

3. The automobile air conditioning performance testing device according to claim 2, characterized in that: The driving mechanism further comprises a driving gear (12), a mounting plate (13), a rotating cylinder (14), a driven gear (15) and a guide assembly; the driving gear (12) is sleeved on the driving shaft (10), the mounting plate (13) is fixedly mounted in the liquid storage chamber (3), the rotating cylinder (14) is rotatably mounted on the mounting plate (13), the driven gear (15) is sleeved on the rotating cylinder (14), and the driven gear (15) is meshed with the driving gear (12); The piston rod (6) slides through the rotating cylinder (14), and the guide assembly is used to convert the rotational movement of the rotating cylinder (14) into the lifting movement of the piston rod (6).

4. The automobile air conditioning performance testing device according to claim 3, characterized in that: The guide assembly comprises a limit plate (16), a hexagonal rod (17) and a sliding shaft (18); the limit plate (16) is fixedly mounted in the liquid storage chamber (3), and the limit plate (16) is located above the mounting plate (13); the hexagonal rod (17) is fixedly connected to the top end of the piston rod (6), the hexagonal rod (17) slides through the limit plate (16), the sliding shaft (18) is fixedly connected to the outer periphery of the piston rod (6), and the inner wall of the rotating cylinder (14) is provided with a guide groove (19) that slidably cooperates with the sliding shaft (18).

5. The automobile air conditioning performance testing device according to claim 4, characterized in that: The blocking mechanism comprises a blocking block (20), a closing component and an opening component; the inner wall of the water outlet hole (5) is provided with a receiving groove capable of receiving the blocking block (20); the blocking block (20) is slidably mounted in the receiving groove; and the blocking block (20) is capable of blocking the water outlet hole (5); The sealing component is capable of driving the sealing block (20) to slide from the receiving groove into the water outlet hole (5) and seal the water outlet hole (5); The opening assembly is used to drive the blocking block (20) to slide from the water outlet hole (5) into the receiving groove and open the water outlet hole (5).

6. The automobile air conditioning performance testing device according to claim 5, characterized in that: The sealing component comprises a limit block (21), a constant force spring (22) and a force applying rod (23); the limit block (21) is fixedly connected to the blocking block (20); a limit sliding groove slidably matched with the limit block (21) is provided in the receiving groove; a force applying groove is provided in the isolation plate (2); an inner ring end of the constant force spring (22) is fixedly installed in the force applying groove; an outer ring end of the constant force spring (22) is fixedly connected to the force applying rod (23); and an end of the force applying rod (23) away from the constant force spring (22) is fixedly connected to the limit block (21).

7. The automobile air conditioning performance testing device according to claim 6, characterized in that: The opening assembly comprises a first permanent magnet block (24) and a second permanent magnet block (25); the first permanent magnet block (24) is fixedly connected to the limit block (21); a mounting groove matching the second permanent magnet block (25) is provided on the outer periphery of the bottom end of the piston rod (6); and the second permanent magnet block (25) is fixedly mounted in the mounting groove.

8. The automobile air conditioning performance testing device according to claim 3, characterized in that: A limiting cylinder (26) is fixedly mounted on the top surface of the isolation plate (2), the piston rod (6) slides through the limiting cylinder (26), a water inlet hole (29) is provided on the limiting cylinder (26), and the bottom end of the rotating cylinder (14) is rotatably mounted on the top end of the limiting cylinder (26).

9. The automobile air conditioning performance testing device according to claim 1, characterized in that: It also includes a door panel (27) and a fan (28); the detection chamber (4) is open at one end, and the door panel (27) is capable of blocking the opening of the detection chamber (4); An air blowing cavity is provided in the detection box chamber (1), and the fan (28) is installed in the air blowing cavity.

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