Air conditioner compressor system for reducing the howling of air conditioner compressor of gasoline car

Abstract

The utility model relates to the field of automobile manufacturing, concretely relates to a kind of air-conditioning compressor system for reducing the howling of gasoline car air-conditioning compressor, and the system is composed of compressor, compressor suction pipe rubber tube, compressor suction pipe hard pipe, compressor suction soundproof room, compressor exhaust pipe hard pipe, compressor exhaust soundproof room, compressor exhaust pipe rubber tube and counterweight block;The compressor suction pipe rubber tube is connected to the compressor air inlet by compressor suction pipe hard pipe and compressor suction soundproof room, and the compressor exhaust port is connected to the compressor exhaust pipe rubber tube by compressor exhaust pipe hard pipe and compressor exhaust soundproof room, and the counterweight block is arranged on the compressor exhaust pipe rubber tube.It can reduce the pulsation noise of compressor in cab by 10dB at most, meet the requirements of NVH, and has obvious effect on reducing the pulsation noise of fixed displacement swash plate piston compressor, low difficulty and wide application range.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing, specifically to an air conditioning compressor system for reducing the whistling sound of air conditioning compressors in gasoline vehicles. Background Technology

[0002] The airflow pulsation noise generated by a swashplate reciprocating compressor during operation is transmitted to the passenger compartment through piping and the air conditioning unit, allowing passengers to directly perceive the compressor's pulsating noise and leading to complaints about the vehicle's NVH comfort. Currently, domestic research on compressor noise is not in-depth enough. Reducing noise at the compressor's source is the most thorough and effective method, but it is also the most difficult. Swashplate reciprocating compressors are small and compact, making noise control even more challenging. Many design solutions are difficult to implement in practical engineering, and even if implemented, they increase the compressor's size, complicating its structure and increasing costs.

[0003] Fixed displacement piston swashplate compressors are widely used in automotive air conditioning systems due to their advantages such as small size, high performance, light weight, and low cost. The periodic reciprocating motion of the piston generates airflow pulsation noise, which is transmitted along the intake and exhaust air conditioning pipes. The structure of the air conditioning pipes and the gas in the air conditioning pipes have certain physical natural frequencies. When the airflow pulsation frequency is close to or even the same as the natural frequency of the pipes, resonance will occur, which will further amplify the pulsation noise and transmit it directly to the passenger compartment, affecting the overall NVH comfort of the vehicle's air conditioning system and causing customer complaints about the overall NVH of the vehicle's air conditioning system. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes an air conditioning system that reduces the whistling noise of a gasoline vehicle's air conditioning compressor. The system optimizes the structure of the compressor's intake and exhaust pipes to reduce compressor pulsation noise. The specific technical solution is as follows: An air conditioning compressor system for reducing the whistling sound of a gasoline vehicle's air conditioning compressor is disclosed. The system comprises a compressor, a compressor suction hose, a compressor suction hard pipe, a compressor suction silencer chamber, a compressor exhaust hard pipe, a compressor exhaust silencer chamber, a compressor exhaust hose, and a counterweight. The compressor suction hose is connected to the compressor inlet via the compressor suction hard pipe and the compressor suction silencer chamber. The compressor exhaust port is connected to the compressor exhaust hose via the compressor exhaust hard pipe and the compressor exhaust silencer chamber. The counterweight is mounted on the compressor exhaust hose.

[0005] Furthermore, the compressor is a bidirectional cylinder fixed displacement compressor.

[0006] Furthermore, the compressor suction hose is made of highly flexible All Rubber (A-type) hose with a C-shaped structure and a length of 470mm, which effectively absorbs vibration and reduces noise transmission. The compressor discharge hose is made of neutral Barrier (C-type) hose with a length of 400mm.

[0007] Furthermore, both the compressor intake pipe and the compressor exhaust pipe are made of lightweight aluminum tubing.

[0008] Furthermore, the compressor intake silencer has a straight-through interface, with a size of φ50mm x 56mm and a wall thickness of 2mm; the compressor exhaust silencer uses an L-shaped interface, with a size of φ35mm x 52mm and a wall thickness of 2.5mm.

[0009] Furthermore, the silencers on the compressor's intake and exhaust pipes are located close to the compressor end, which can better reduce the transmission of compressor noise from the source.

[0010] Furthermore, the counterweight is made of Q235 steel, with a single weight of 90g, an internal size of φ19.3mm x 30mm, an external size of φ38mm x 30mm, and a φ35mm x 13mm groove in the middle for clamping. The whole assembly is fixed by two spliced ​​metal elastic clamps, with a total weight of about 200g, and is located in the middle of the hose.

[0011] This invention can reduce the pulsating noise of the compressor in the cab by up to 10dB, meeting all NVH requirements. It is particularly effective in reducing the pulsating noise of a fixed displacement swashplate piston compressor, and is easy to implement with a wide range of applications. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of this utility model; Figure 2 Schematic diagram of the compressor intake chamber structure of this utility model; Figure 3 Schematic diagram of the compressor exhaust chamber structure of this utility model; Figure 4 Schematic diagram of the counterweight structure of this utility model.

[0013] Figure label: 1. Compressor; 2. Compressor suction silencer chamber; 3. Compressor suction pipe (rigid); 4. Compressor suction pipe (rubber hose); 5. Compressor discharge pipe (rigid); 6. Compressor discharge silencer chamber; 7. Compressor discharge pipe (rubber hose); 8. Counterweight. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figure 1 As shown, an air conditioning compressor system for reducing the whistling sound of a gasoline vehicle's air conditioning compressor is disclosed. The system comprises a compressor 1, a compressor suction hose 4, a compressor suction hard pipe 3, a compressor suction silencer 2, a compressor exhaust hard pipe 5, a compressor exhaust silencer 6, a compressor exhaust hose 7, and a counterweight 8. The compressor suction hose 4 is connected to the compressor 1's air inlet via the compressor suction hard pipe 3 and the compressor suction silencer 2. The compressor 1's exhaust outlet is connected to the compressor exhaust hose 7 via the compressor exhaust hard pipe 5 and the compressor exhaust silencer 6. The counterweight is mounted on the compressor exhaust hose 7.

[0016] The compressor 1 is a bidirectional 10-cylinder fixed displacement compressor.

[0017] The compressor suction hose 4 is a highly flexible type A (All Rubber) hose with a "C" structure and a length of 470mm, which can effectively absorb vibration and reduce noise transmission. The compressor discharge hose (7) is a neutral type C (Barrier) hose with a length of 400mm.

[0018] Both the compressor intake pipe 3 and the compressor exhaust pipe 5 are made of lightweight aluminum tubing.

[0019] like Figure 2-3 As shown, the compressor intake silencer has a straight-through interface, with a size of φ50mm x 56mm and a wall thickness of 2mm; the compressor exhaust silencer 6 uses an L-shaped interface, with a size of φ35mm x 52mm and a wall thickness of 2.5mm.

[0020] The silencers on the compressor's intake and exhaust pipes are located close to the compressor end, which can better reduce the transmission of compressor noise from the source.

[0021] like Figure 4 As shown, the counterweight 8 is made of Q235 steel, with a single weight of 90g, an internal size of φ19.3mm x 30mm, an external size of φ38mm x 30mm, and a φ35mm x 13mm groove in the middle for clamping. The whole assembly is fixed by two spliced ​​metal elastic clamps, with a total weight of about 200g, and is located in the middle of the hose.

[0022] Using this solution can reduce the pulsating noise of the compressor in the cab by up to 10dB, meeting all NVH requirements, and users are very satisfied.

[0023] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. An air conditioning compressor system for reducing the whistling sound of a gasoline vehicle's air conditioning compressor, characterized in that: The system consists of a compressor, a compressor suction hose, a compressor suction hard pipe, a compressor suction silencer, a compressor discharge hard pipe, a compressor discharge silencer, a compressor discharge hose, and a counterweight. The compressor suction hose is connected to the compressor inlet through the compressor suction hard pipe and the compressor suction silencer. The compressor discharge outlet is connected to the compressor discharge hose through the compressor discharge hard pipe and the compressor discharge silencer. The counterweight is mounted on the compressor discharge hose.

2. An air conditioning compressor system for reducing whistling noise in gasoline vehicle air conditioning compressors according to claim 1, characterized in that: The compressor is a bidirectional cylinder fixed displacement compressor.

3. An air conditioning compressor system for reducing whistling noise in gasoline vehicle air conditioning compressors according to claim 1, characterized in that: The compressor suction hose is a highly flexible A-type hose with a "C" shaped structure and a length of 470mm; the compressor discharge hose is a neutral C-type hose with a length of 400mm.

4. An air conditioning compressor system for reducing whistling noise in gasoline vehicle air conditioning compressors according to claim 1, characterized in that: Both the compressor intake pipe and the compressor exhaust pipe are made of lightweight aluminum tubing.

5. An air conditioning compressor system for reducing whistling noise in gasoline vehicle air conditioning compressors according to claim 1, characterized in that: The compressor intake silencer has a straight-through interface, with a size of φ50mm x 56mm and a wall thickness of 2mm; the compressor exhaust silencer uses an L-shaped interface, with a size of φ35mm x 52mm and a wall thickness of 2.5mm.

6. An air conditioning compressor system for reducing whistling noise in gasoline vehicle air conditioning compressors according to claim 1, characterized in that: The silencers on the compressor's suction and discharge pipes are both located near the compressor end.

7. An air conditioning compressor system for reducing whistling noise in gasoline vehicle air conditioning compressors according to claim 1, characterized in that: The counterweight is made of Q235 steel, with a single weight of 90g. Its internal dimensions are φ19.3mm x 30mm, and its external dimensions are φ38mm x 30mm. It has a φ35mm x 13mm groove in the middle for clamping. The whole assembly is fixed by two spliced ​​metal elastic clamps. The total weight of the assembly is about 200g, and it is located in the middle of the hose.

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