Engineering Service
Compressor and system NVH engineering services
1. Compressor application and development
· Since electric drive will become a future trend, it will benefit from the improvement of control technology
· Emissions (centralized emissions);
· Vibration and noise are smaller, and processing accuracy is improved;
· The application of electric compressors is gradually expanded to more fields;
· At present, the largest application field of electric compressors is home appliances. With the introduction of new energy vehicles, the use of electric compressors in new energy vehicles will also increase.
2. Introduction to BOACH acoustic compressor engineering services
2.1 Introduction to compressor NVH issues:
2.2 Summary of BOACH acoustic vehicle compressor NVH engineering services:
3. Detailed introduction of BOACH acoustic compressor engineering services:
3.1 Introduction to vehicle-level compressor forward development and engineering services
3.2 Introduction to compressor forward development and its system NVH engineering services
4. Compressor NVH engineering service cases:
· BOACH Acoustics provides compressor and system-level NVH engineering services;
· Due to the large number of cases, four cases at different levels are listed here for explanation.
Case 1: Solving the NVH problem of the air conditioning compressor of a new energy vehicle
· When the rotational speed increases, a high-level whistling sound from the compressor appears in the car;
· At the same time, there is a partial boom sound in the rear seats;
· Optimize the compressor to solve the noise problem.
An electric vehicle air conditioning compressor low-noise technical service case
Case 2: Solving the abnormal noise problem of rotary compressor in household air conditioners
· In view of the abnormal noise problem of the indoor air conditioner, investigate the cause of the problem;
· Design and develop silencers based on the causes of problems;
· Proof the silencer and solve the abnormal noise problem.
Compressor exhaust line silencer
Abnormal noise diagnosis
Compressor exhaust silencer tuning and sample shaping
Case 3: Research case on sound field reconstruction technology of a certain scroll compressor
· Conducted vibration ODS test on a certain scroll compressor, and combined with FEA model to reconstruct the virtual sound field;
· Use B&K acoustic brushes to conduct near-field sound source positioning tests to obtain radiated sound power and sound field cloud images;
· The virtual reconstructed sound field is used to benchmark against actual measurements to verify its reliability.
Compressor ODS test
Compressor Radiated Noise Modeling
Verification of reconstructed sound field radiated sound power
Case 4: Design, development and cost reduction analysis of sound insulation cover for a commercial air-conditioning compressor
· Based on near-field acoustic testing, obtain the equivalent sound source (ESM) of the compressor;
· Based on the ESM results of the compressor, design the sound insulation cover and evaluate the noise reduction;
· Carry out cost reduction analysis and performance analysis based on the microscopic test results of materials;
· Propose the final noise reduction plan and optimize costs.
Air conditioning system sound insulation cover design and noise reduction cost
Air conditioning system sound insulation cover design and noise reduction cost
Remarks:
· BOACH Acoustics has a large number of compressor (piston machine, rotor machine, scroll machine, centrifuge, etc.) design and development, system integration application cases; ·
If you are interested in cooperation, you can directly contact the person in charge of the company.
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Room 901, Building 1, Phase 2, Yungu Phase 2, Fengxi New Town, Xixian New District, Xixian New District, Xi'an City, Shaanxi Province
Room 307, Building 1, Harbin Institute of Technology Robot Industrial Park, No. 488 Qianjin East Road, Economic Development Zone, Kunshan City, Jiangsu Province
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