Air leakage rate automatic detection device

Abstract

The utility model discloses an automatic air leakage rate detection device, and belongs to the technical field of air conditioner detection, the automatic air leakage rate detection device comprises an automatic control cabinet, a fan frame is fixedly mounted in the automatic control cabinet, a fan is fixedly mounted in the fan frame, a differential pressure sensor is fixedly mounted on the inner wall of the automatic control cabinet, a noise reduction structure is arranged in the automatic control cabinet, and the noise reduction structure comprises a damping layer. The damping layer is fixedly installed on the inner wall of the self-control cabinet, silencing cotton is fixedly installed on one side of the damping layer, silencing foam is fixedly installed on one side of the silencing cotton, a pointer type differential pressure gauge is fixedly installed on the side, located on the differential pressure sensor, of the inner wall of the self-control cabinet, an air outlet flange is fixedly installed on one side of the self-control cabinet, and an air conditioner box is placed on one side of the self-control cabinet. A pressure sensor is fixedly mounted in the air-conditioning box, and a detection pipe is fixedly mounted at the top of the air-conditioning box; the noise reduction structure is a multi-layer composite structure, noise generated by the fan is effectively absorbed and weakened, and therefore the working environment is improved, and noise pollution is greatly reduced.

Description

Technical Field

[0001] This application relates to the technical field of air conditioner detection, and particularly relates to an automatic air leakage rate detection device. Background Art

[0002] In the operation and maintenance of an air conditioning system, the air leakage rate is a crucial parameter, which is directly related to the energy efficiency, stability, and operating cost of the system.

[0003] During the detection process of the existing air leakage rate detection device for an air conditioning system, the fan is directly connected to the air inlet of the detection pipe to inflate the air conditioning box. The high-speed rotation of the fan and the turbulent sound generated when the air flow passes through the pipeline cause a large amount of noise during the inflation process, affecting the operating environment and surrounding areas, and there are areas for improvement.

[0004] Therefore, this application provides an automatic air leakage rate detection device. Utility Model Content

[0005] Aiming at the deficiencies of the prior art, this application provides an automatic air leakage rate detection device, which overcomes the deficiencies of the prior art and aims to solve the problem that during the detection process of the existing air leakage rate detection device for an air conditioning system, the fan is directly connected to the air inlet of the detection pipe to inflate the air conditioning box, and the high-speed rotation of the fan and the turbulent sound generated when the air flow passes through the pipeline cause a large amount of noise during the inflation process, affecting the operating environment and surrounding areas, and there are areas for improvement.

[0006] To achieve the above object, this application provides the following technical solution: An automatic air leakage rate detection device includes an automatic control cabinet. Inside the automatic control cabinet, a fan frame is fixedly installed. Inside the fan frame, a fan is fixedly installed. A differential pressure sensor is fixedly installed on the inner wall of the automatic control cabinet. A sound absorption structure is arranged inside the automatic control cabinet. The sound absorption structure includes a damping layer, the damping layer is fixedly installed on the inner wall of the automatic control cabinet, a sound absorption cotton is fixedly installed on one side of the damping layer, a sound absorption foam is fixedly installed on one side of the sound absorption cotton. A pointer type differential pressure gauge is fixedly installed on the inner wall of the automatic control cabinet on the side of the differential pressure sensor. An air outlet flange is fixedly installed on one side of the automatic control cabinet. An air conditioning box is placed on one side of the automatic control cabinet. A pressure sensor is fixedly installed inside the air conditioning box. A detection pipe is fixedly installed on the top of the air conditioning box, and one end of the detection pipe is detachably connected to the air outlet flange.

[0007] By adopting the above technical solutions, the rated air volume of the air handling unit is preset through the automatic control cabinet. After the detection pipe is connected to the air outlet flange and the fan is started, the fan rotates to generate air flow, simulating the air volume flow in the actual environment. The pressure sensor automatically adjusts the air volume according to the pressure (700 Pa for non-purified air conditioners, 1000 Pa for purified air conditioners). By reading the pressure of the differential pressure sensor, the automatic control cabinet calculates the air volume according to the corresponding formula and then compares it with the air volume of the preset pressure sensor (<2% for non-purified air conditioners, <1% for purified air conditioners) to determine whether the air leakage rate is qualified. Among them, the sound-absorbing foam uses high-density sound-absorbing cotton, which is mainly used to absorb high-frequency noise, and the sound-absorbing cotton enhances the isolation effect of medium and low-frequency noise. The damping layer is tightly connected to the inner wall of the automatic control cabinet to reduce the vibration transmission during operation. The sound-absorbing structure is a multi-layer composite structure, which can effectively absorb and weaken the noise generated by the fan, thereby improving the working environment and greatly reducing the noise pollution.

[0008] As a preferred technical solution of the present application, two groups of limit blocks are fixedly installed on the outer surface of the air outlet flange. One end of the detection pipe away from the air handling unit is fixedly connected with a threaded connection pipe, and the threaded connection pipe is threadedly connected to the air outlet flange. Two groups of L-shaped clamping blocks are fixedly installed on one side of the detection pipe close to the threaded connection pipe, and the threaded connection pipe is clamped with the L-shaped clamping blocks.

[0009] By adopting the above technical solutions, the threaded connection pipe is threadedly connected to the air outlet flange, which is convenient for the disassembly and installation of the detection pipe and the air outlet flange. Among them, after the L-shaped clamping block is rotated to be clamped with the limit block, the limit block limits the L-shaped clamping block, and the rapid and stable connection of the detection pipe and the air outlet flange can be realized, improving the practicability during use.

[0010] As a preferred technical solution of the present application, a protective net is fixedly installed on one side of the automatic control cabinet at the air suction port of the fan.

[0011] By adopting the above technical solutions, the protective net filters the impurities in the air when the fan sucks air, preventing external sundries from being sucked into the fan and improving the safety of the fan operation.

[0012] As a preferred technical solution of the present application, fixed seats are fixedly installed at the four corners of the bottom end of the automatic control cabinet, and universal wheels are rotatably connected to the bottoms of the four groups of fixed seats.

[0013] By adopting the above technical solutions, the automatic control cabinet can be moved labor-savingly through the universal wheels, improving the portability of the automatic control cabinet.

[0014] As a preferred technical solution of the present application, a display is fixedly installed on the top end of the automatic control cabinet, and the display is electrically connected to the data processing end of the automatic control cabinet.

[0015] By adopting the above technical solution, the data processed by the automatic control cabinet, such as air leakage rate, pressure difference, etc., is displayed on the display, which is convenient for users to view the test results intuitively.

[0016] As a preferred technical solution of the present application, a rectangular block is fixedly installed on one side of the fixing seat, a screw rod is connected to the internal thread of the rectangular block, and a stop block is fixedly installed on the bottom end of the screw rod.

[0017] By adopting the above technical solution, when the device is working, the screw rod is rotated to make the stop block descend and contact the ground, thereby improving the stability of the device.

[0018] Beneficial effects of this application:

[0019] The rated air volume of the air-conditioning box is preset through the automatic control cabinet. After the detection tube is connected to the air outlet flange, the fan is started. The fan rotates to generate airflow, simulating the air volume flow in the actual environment. The pressure sensor automatically adjusts the air volume according to the pressure (700Pa for non-purification air conditioners and 1000Pa for purification air conditioners). By reading the pressure of the differential pressure sensor, the automatic control cabinet calculates the air volume according to the corresponding formula, and then compares it with the preset air volume of the pressure sensor (non-purification air conditioners <2%, purification air conditioners <1%) to determine whether the air leakage rate is qualified. Among them, the sound-absorbing foam adopts high-density sound-absorbing cotton, which is mainly used to absorb high-frequency noise. The sound-absorbing cotton enhances the isolation effect of medium and low-frequency noise. The damping layer is tightly connected to the inner wall of the automatic control cabinet to reduce vibration transmission during operation. The sound-absorbing structure is a multi-layer composite structure, which effectively absorbs and weakens the noise generated by the fan, thereby improving the working environment and greatly reducing noise pollution.

[0020] The threaded connection between the threaded connecting pipe and the air outlet flange is convenient for disassembly and installation of the detection tube and the air outlet flange. After the L-shaped clamp is rotated to engage with the limit block, the limit block limits the L-shaped clamp, so that the detection tube and the air outlet flange can be quickly and firmly connected, thereby improving the practicality during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 This is a schematic diagram of the sound-absorbing structure of the present application;

[0023] Figure 3 This is a structural diagram of the connection between the air outlet flange and the detection tube;

[0024] Figure 4 for Figure 1 Enlarged structural diagram at A in the middle.

[0025] In the figure: 1, automatic control cabinet; 2, fan frame; 201, fan; 3, differential pressure sensor; 4, sound insulation structure; 401, damping layer; 402, sound insulation cotton; 403, sound insulation foam; 5, protection net; 6, pointer type differential pressure gauge; 7, air outlet flange; 701, limit block; 8, detection pipe; 801, threaded connecting pipe; 802, L-shaped clamping block; 9, pressure sensor; 10, air conditioning box; 11, display; 12, fixed seat; 13, universal wheel; 14, rectangular block; 15, screw; 16, abutting block. Specific implementation mode

[0026] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0027] Referring to Figures 1-3 , an automatic air leakage rate detection device includes an automatic control cabinet 1, a fan frame 2 is fixedly installed inside the automatic control cabinet 1, a fan 201 is fixedly installed inside the fan frame 2, a differential pressure sensor 3 is fixedly installed on the inner wall of the automatic control cabinet 1, a sound insulation structure 4 is arranged inside the automatic control cabinet 1, the sound insulation structure 4 includes a damping layer 401, the damping layer 401 is fixedly installed on the inner wall of the automatic control cabinet 1, a sound insulation cotton 402 is fixedly installed on one side of the damping layer 401, a sound insulation foam 403 is fixedly installed on one side of the sound insulation cotton 402, a pointer type differential pressure gauge 6 is fixedly installed on the inner wall of the automatic control cabinet 1 on the side of the differential pressure sensor 3, an air outlet flange 7 is fixedly installed on one side of the automatic control cabinet 1, an air conditioning box 10 is placed on one side of the automatic control cabinet 1, a pressure sensor 9 is fixedly installed inside the air conditioning box 10, a detection pipe 8 is fixedly installed on the top of the air conditioning box 10, and one end of the detection pipe 8 is detachably connected to the air outlet flange 7; a protection net 5 is fixedly installed on one side of the automatic control cabinet 1 at the air suction port of the fan 201.

[0028] The rated air volume of the air-conditioning box 10 is preset through the automatic control cabinet 1. After the detection tube 8 is connected to the air outlet flange 7, the fan 201 is started. The fan 201 rotates to generate airflow, simulating the air volume flow in the actual environment. The pressure sensor 9 automatically adjusts the air volume according to the pressure (700Pa for non-purified air conditioners, 1000Pa for purified air conditioners). By reading the pressure of the differential pressure sensor 3, the automatic control cabinet 1 calculates the air volume according to the corresponding formula, and then compares it with the preset air volume of the pressure sensor 9 (non-purified air conditioners <2%, purified air conditioners <1%) to determine whether the air leakage rate is Qualified, among which, the sound-absorbing foam 403 adopts high-density sound-absorbing cotton, which is mainly used to absorb high-frequency noise. The sound-absorbing cotton 402 enhances the isolation effect of medium and low-frequency noise. The damping layer 401 is tightly connected with the inner wall of the automatic control cabinet 1 to reduce the vibration transmission during operation. The sound-absorbing structure 4 is a multi-layer composite structure, which effectively absorbs and weakens the noise generated by the fan, thereby improving the working environment and greatly reducing noise pollution. The impurities in the air when the fan 201 sucks air are filtered through the protective net 5 to prevent external debris from being sucked into the fan 201, thereby improving the safety of the operation of the fan 201.

[0029] Reference Figures 2-4 Two groups of limit blocks 701 are fixedly installed on the outer surface of the air outlet flange 7, and a threaded connection pipe 801 is fixedly connected to the end of the detection tube 8 away from the air conditioning box 10, and the threaded connection pipe 801 is threadedly connected to the air outlet flange 7. Two groups of L-shaped clamping blocks 802 are fixedly installed on the side of the detection tube 8 close to the threaded connection pipe 801, and the threaded connection pipe 801 is clamped with the L-shaped clamping block 802; fixed seats 12 are fixedly installed at the four corners of the bottom end of the automatic control cabinet 1, and the bottoms of the four groups of fixed seats 12 are rotatably connected with universal wheels 13; a rectangular block 14 is fixedly installed on one side of the fixed seat 12, and a screw 15 is threadedly connected to the inner thread of the rectangular block 14, and a stop block 16 is fixedly installed at the bottom end of the screw 15;

[0030] The threaded connection tube 801 is threadedly connected to the air outlet flange 7, which facilitates the disassembly and installation of the detection tube 8 and the air outlet flange 7. After the L-shaped block 802 is rotated to engage with the limit block 701, the limit block 701 limits the L-shaped block 802, so that the detection tube 8 and the air outlet flange 7 can be quickly and firmly connected, thereby improving the practicality during use; the automatic control cabinet can be moved effortlessly through the universal wheel 13, thereby improving the portability of the automatic control cabinet 1; when this device is working, the screw 15 is rotated to make the block 16 drop and contact the ground, thereby improving the stability of this device.

[0031] Reference Figures 1-3 A display 11 is fixedly installed on the top of the automatic control cabinet 1, and the display 11 is electrically connected to the data processing end of the automatic control cabinet 1; the data processed by the automatic control cabinet 1, such as air leakage rate, pressure difference, etc., are displayed by the display 11, so that the user can intuitively view the detection results.

[0032] Working principle: The rated air volume of the air conditioner 10 is preset through the automatic control cabinet 1. After the detection tube 8 is connected to the air outlet flange 7, the fan 201 is started. The fan 201 rotates to generate airflow, simulating the air volume flow in the actual environment. The pressure sensor 9 automatically adjusts the air volume according to the pressure (700Pa for non-purification air conditioner, 1000Pa for purification air conditioner). By reading the pressure of the pressure difference sensor 3, the automatic control cabinet 1 calculates the air volume according to the corresponding formula, and then compares it with the preset air volume of the pressure sensor 9 (non-purification air conditioner <2%, purification air conditioner <200Pa). Adjust <1%), determine whether the air leakage rate is qualified, wherein the sound-absorbing foam 403 adopts high-density sound-absorbing cotton, which is mainly used to absorb high-frequency noise, and the sound-absorbing cotton 402 enhances the isolation effect of medium and low-frequency noise, and the damping layer 401 is tightly connected to the inner wall of the automatic control cabinet 1 to reduce the vibration transmission during operation, and is threadedly connected to the air outlet flange 7 through the threaded connecting pipe 801, which is convenient for the disassembly and installation of the detection pipe 8 and the air outlet flange 7, wherein, after the L-shaped block 802 is rotated to be engaged with the limit block 701, the limit block 701 limits the L-shaped block 802;

[0033] The universal wheel 13 can save effort to move the automatic control cabinet, and the protective net 5 can filter impurities in the air when the fan 201 sucks air;

[0034] At the same time, the data processed by the automatic control cabinet 1 is displayed through the display 11;

[0035] In addition, when the device is working, the screw rod 15 is rotated to make the stop block 16 descend and contact the ground.

[0036] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic air leakage detection device, comprising an automatic control cabinet (1), characterized in that: A fan rack (2) is fixedly installed inside the automatic control cabinet (1), a fan (201) is fixedly installed inside the fan rack (2), a pressure difference sensor (3) is fixedly installed on the inner wall of the automatic control cabinet (1), a sound-absorbing structure (4) is arranged inside the automatic control cabinet (1), the sound-absorbing structure (4) comprises a damping layer (401), the damping layer (401) is fixedly installed on the inner wall of the automatic control cabinet (1), a sound-absorbing cotton (402) is fixedly installed on one side of the damping layer (401), and a sound-absorbing cotton (402) is fixedly installed on one side of the sound-absorbing cotton (402). A sound-absorbing foam (403) is fixedly installed on the side of the automatic control cabinet (1); a pointer-type differential pressure gauge (6) is fixedly installed on the inner wall of the automatic control cabinet (1) on the side of the differential pressure sensor (3); an air outlet flange (7) is fixedly installed on one side of the automatic control cabinet (1); an air conditioning box (10) is placed on one side of the automatic control cabinet (1); a pressure sensor (9) is fixedly installed inside the air conditioning box (10); a detection tube (8) is fixedly installed on the top of the air conditioning box (10), and one end of the detection tube (8) is detachably connected to the air outlet flange (7).

2. The automatic air leakage detection device according to claim 1, characterized in that: Two groups of limit blocks (701) are fixedly installed on the outer surface of the air outlet flange (7); one end of the detection tube (8) away from the air conditioning box (10) is fixedly connected to a threaded connection tube (801); the threaded connection tube (801) is threadedly connected to the air outlet flange (7); two groups of L-shaped clamping blocks (802) are fixedly installed on a side of the detection tube (8) close to the threaded connection tube (801); the threaded connection tube (801) is clamped to the L-shaped clamping block (802).

3. The automatic air leakage detection device according to claim 1, characterized in that: A protective net (5) is fixedly installed on one side of the automatic control cabinet (1) at the air intake port of the fan (201).

4. The automatic air leakage detection device according to claim 1, characterized in that: Fixed seats (12) are fixedly installed at the four corners of the bottom end of the automatic control cabinet (1), and the bottoms of the four groups of fixed seats (12) are rotatably connected to universal wheels (13).

5. The automatic air leakage detection device according to claim 1, characterized in that: A display (11) is fixedly mounted on the top of the automatic control cabinet (1), and the display (11) is electrically connected to a data processing terminal of the automatic control cabinet (1).

6. The automatic air leakage detection device according to claim 4, characterized in that: A rectangular block (14) is fixedly mounted on one side of the fixing seat (12), a screw rod (15) is internally threadedly connected to the rectangular block (14), and a stop block (16) is fixedly mounted on the bottom end of the screw rod (15).

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