Automobile air conditioning air intake test device

Abstract

The present invention discloses a vehicle air-conditioning air inlet test device, comprising an air pressure sensor, a bellows, an air flow meter, an axial flow fan, an air volume regulating device, and a temperature and humidity sensor; an air inlet and an air outlet are arranged on the side of the bellows, an air flow channel is contained inside the bellows, the air inlet and the air outlet are connected through the air flow channel, the air pressure sensor, the air flow meter, the axial flow fan, and the temperature and humidity sensor are arranged in the air flow channel, the air pressure sensor is close to the air outlet, and the air volume regulating device is arranged at the air inlet. The present invention can define different air inlet volumes and air inlet back pressures of the air inlet as needed, is simple to operate, more realistically simulates the working condition information of the air intake of automobile parts under the condition of the whole vehicle, and provides more accurate test conditions for various performance tests of the automobile air conditioner.

Description

Technical Field

[0001] The invention relates to an automobile component testing device, in particular to an automobile air-conditioning air inlet testing device. Background Art

[0002] There is a transition air duct between the external circulation air outlet of the existing automobile air conditioner and the windshield air inlet grille of the whole vehicle. When conducting various performance tests such as the noise of the air conditioner box unit, the back pressure effect brought by the transition air duct of the whole vehicle in the external circulation mode is ignored. The reason is that the air volume and back pressure data at the air inlet end cannot be directly measured. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide an automobile air-conditioning air inlet test device that can simulate the air intake conditions under whole vehicle conditions in view of the insufficiency of existing test conditions.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a car air-conditioning air inlet test device, including an air pressure sensor, a bellows, an air flow meter, an axial flow fan, an air volume adjustment device, and a temperature and humidity sensor; an air inlet and an air outlet are arranged on the side of the bellows, and the bellows contains an air flow channel inside, and the air inlet and the air outlet are connected through the air flow channel, the air pressure sensor, the air flow meter, the axial flow fan, and the temperature and humidity sensor are arranged in the air flow channel, the air pressure sensor is close to the air outlet, and the air volume adjustment device is arranged at the air inlet.

[0005] Furthermore, the air volume adjustment device includes a conical block, an adjustment handle, an air inlet baffle, an air inlet grille, a screw, and a bracket. The air inlet grille is arranged at the air inlet, the air inlet baffle is arranged on the inner side of the air inlet grille, the conical block is arranged in the through hole of the air inlet baffle, the bracket is fixed on the air inlet grille, the screw is arranged in the threaded hole of the bracket, one end of the screw is connected to the conical block, and the other end is connected to the adjustment handle.

[0006] Furthermore, the air flow channels are arranged in a serpentine shape.

[0007] Furthermore, an open-cell foam material layer is laid inside the airflow channel pipe.

[0008] Furthermore, the air pressure sensor, air flow meter, axial flow fan, and temperature and humidity sensor are respectively connected to the electrical control box.

[0009] Furthermore, the electrical control box is provided with a human-machine interaction interface, through which the gas flow, back pressure, temperature and humidity of the airflow channel can be displayed, and the rotation speed of the axial flow fan can be controlled.

[0010] Furthermore, the electrical control box transmits the gas flow, back pressure, temperature and humidity of the air flow channel and the speed information of the axial flow fan to the computer through the data line for processing and analysis.

[0011] Furthermore, the bellows is provided with a moving wheel.

[0012] Beneficial effect: The automobile air-conditioning air intake test device of the present invention can define different air intake volumes and air intake back pressures of the air inlet as needed, is easy to operate, and more realistically simulates the operating condition information of the air intake of automobile parts under the conditions of the whole vehicle, providing more accurate test conditions for various performance tests of the automobile air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a vehicle air conditioning air intake test device;

[0014] Figure 2 It is a structural schematic diagram of the air volume regulating device;

[0015] In the figure: 1-air outlet; 2-air pressure sensor; 3-bellows; 4-air flow meter; 5-electrical control box; 6-axial flow fan; 7-air volume adjustment device; 7-1-conical block; 7-2-adjusting handle; 7-3-air inlet baffle; 7-4-air inlet grille; 7-5-screw; 7-6-bracket; 8-temperature and humidity sensor; 9-air inlet; 10-air flow channel; 11-guide baffle; 12-open-cell foam material layer. DETAILED DESCRIPTION

[0016] The present invention will be further explained below in conjunction with the accompanying drawings.

[0017] like Figure 1 As shown, a vehicle air-conditioning air inlet test device of the present invention comprises an air pressure sensor 2, a bellows 3, an air flow meter 4, an axial flow fan 6, an air volume regulating device, and a temperature and humidity sensor 8.

[0018] The bellows 3 is rectangular, and a moving wheel (not shown in the figure) may be provided at the bottom of the bellows 3 to facilitate the movement of the test device and docking with the air-conditioning product to be tested. An air inlet 9 and an air outlet 1 are provided on the side of the bellows 3. The bellows 3 contains an air flow channel 10 inside, and the air inlet 9 and the air outlet 1 are connected through the air flow channel 10. The air flow channel 10 is used to simulate the transition air duct between the external circulation air outlet of the automobile air conditioner and the windshield air inlet grille of the whole vehicle. The air outlet 1 is used to connect the air inlet of the air-conditioning product to be tested. The air pressure sensor 2, the air flow meter 4, the axial flow fan 6, and the temperature and humidity sensor 8 are arranged in the air flow channel 10. The air pressure sensor 2 is close to the air outlet 1 to monitor the air inlet back pressure in the air flow channel 10. The air flow meter 4 is used for the air flow through the air flow channel 10. The axial flow fan 6 is used to introduce the external air into the air inlet of the air conditioner through the air flow channel 10. The temperature and humidity sensor 8 is used to measure the physical properties of the air. The air volume adjustment device 7 is arranged at the air inlet 9 to adjust the air volume of the air inlet 9.

[0019] like Figure 2 As shown, the air volume regulating device 7 comprises a conical block 7-1, an adjusting handle 7-2, an air inlet baffle 7-3, an air inlet grille 7-4, a screw 7-5, and a bracket 7-6. The air inlet grille 7-4 is arranged at the air inlet 9, the air inlet baffle 7-3 is arranged inside the air inlet grille 7-4, the conical block 7-1 is arranged in the through hole of the air inlet baffle 7-3, the bracket 7-6 is fixed on the air inlet grille 7-4, the screw 7-5 is arranged in the threaded hole of the bracket 7-6, one end of the screw 7-5 is connected to the conical block 7-1, and the other end is connected to the adjusting handle 7-2. Its working principle is: external air enters the air box 3 through the air inlet grilles 7-4 on both sides, shaking the handle 7-2 can make the conical block 7-1 realize horizontal displacement, adjust the gap size between the conical block 7-1 and the through hole of the air inlet baffle 7-3, and finally realize the change of the air volume and air resistance due to the change of the air inlet area.

[0020] The air outlet 1 is connected to the air inlet end of the product to be tested. For various air inlet conditions, the rotation speed of the axial flow fan 6 needs to be adjusted to achieve the required air volume and back pressure combination.

[0021] like Figure 1As shown, in this embodiment, the air outlet 1 is located at the upper left side of the air box 3, the air inlet 9 is located at the lower right side of the air box 3, and two upper and lower guide baffles 11 are provided inside the air box 3. The air flow channel 10 is divided into three layers of shorter flow channels, namely, upper, middle and lower layers, by the guide baffles 11. The three layers of flow channels are connected end to end in sequence to form a serpentine arrangement. The right end of the lower layer flow channel is connected to the air inlet 9, the upper left end of the lower layer flow channel is connected to the lower left end of the middle layer flow channel, the upper right end of the middle layer flow channel is connected to the lower right end of the upper layer flow channel, and the left end of the upper layer flow channel is connected to the air outlet 1. The axial flow fan 6 is located in the middle of the lower layer flow channel, the temperature and humidity sensor 8 is located at the lower left end of the lower layer flow channel, the air flow meter 4 is located in the middle, and the air pressure sensor 2 is located at the upper left end of the upper layer flow channel. The air flow channel 10 is arranged in a serpentine shape, and the provided channel can not only meet the instrument layout of the performance test, but also save space length.

[0022] An open-cell foam material layer 12 is laid inside the airflow channel 10 , and the open-cell foam material has a sound-absorbing effect, eliminating the slight noise that may be generated by the airflow passing through the axial flow fan 6 and the air flow meter 4 , thereby ensuring the sound quality of the air outlet 1 .

[0023] The air pressure sensor 2, air flow meter 4, axial flow fan 6, and temperature and humidity sensor 8 are respectively connected to the electrical control box 5. The electrical control box 5 is also provided with a human-computer interaction interface. During the test, the measured data signals are transmitted to the electrical control box 5 through the temperature and humidity sensor 8, the air flow meter 4, and the air pressure sensor 2. The gas flow, back pressure, temperature and humidity information of the air flow channel can be displayed through the human-computer interaction interface, and the speed of the axial flow fan 6 can be controlled. All the above parameter information can be transmitted to the computer software through the external data line of the electrical control box 5 for post-processing analysis.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A vehicle air-conditioning air inlet test device, characterized in that: The invention comprises an air pressure sensor (2), a bellows (3), an air flow meter (4), an axial flow fan (6), an air volume regulating device (7), and a temperature and humidity sensor (8); an air inlet (9) and an air outlet (1) are arranged on the side of the bellows (3); an air flow channel (10) is contained inside the bellows (3); the air inlet (9) and the air outlet (1) are connected through the air flow channel (10); the air pressure sensor (2), the air flow meter (4), the axial flow fan (6), and the temperature and humidity sensor (8) are arranged in the air flow channel (10); the air pressure sensor (2) is close to the air outlet (1); and the air volume regulating device (7) is arranged at the air inlet (9).

2. The automobile air-conditioning air inlet testing device according to claim 1, characterized in that: The air volume adjustment device (7) comprises a conical block (7-1), an adjustment handle (7-2), an air inlet baffle (7-3), an air inlet grille (7-4), a screw (7-5), and a bracket (7-6); the air inlet grille (7-4) is arranged at the air inlet (9); the air inlet baffle (7-3) is arranged inside the air inlet grille (7-4); the conical block (7-1) is arranged in a through hole of the air inlet baffle (7-3); the bracket (7-6) is fixed on the air inlet grille (7-4); the screw (7-5) is arranged in a threaded hole of the bracket (7-6); one end of the screw (7-5) is connected to the conical block (7-1), and the other end is connected to the adjustment handle (7-2).

3. The automobile air-conditioning air inlet testing device according to claim 1, characterized in that: The air flow channels (10) are arranged in a serpentine shape.

4. The automobile air-conditioning air inlet testing device according to claim 3, characterized in that: An open-cell foam material layer (12) is laid inside the airflow channel (10).

5. The automobile air-conditioning air inlet testing device according to claim 1, characterized in that: The air pressure sensor (2), the air flow meter (4), the axial flow fan (6), and the temperature and humidity sensor (8) are respectively connected to the electrical control box (5).

6. The automobile air-conditioning air inlet testing device according to claim 5, characterized in that: The electrical control box (5) is provided with a human-machine interaction interface, through which the gas flow, back pressure, temperature and humidity of the air flow channel (10) can be displayed, and the rotation speed of the axial flow fan (6) can be controlled.

7. The automobile air-conditioning air inlet testing device according to claim 6, characterized in that: The electrical control box (5) transmits the information of the gas flow rate, back pressure, temperature and humidity of the air flow channel (10) and the speed of the axial flow fan (6) to the computer via a data line for processing and analysis.

8. The automobile air-conditioning air inlet testing device according to claim 1, characterized in that: The bellows (3) is provided with moving wheels.

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