端盖、压缩机、空调器和车辆
By designing multiple series expansion chambers in the air conditioning compressor, the airflow gradually absorbs noise through expansion chambers of different frequencies, solving the problem of in-vehicle noise caused by exhaust pulsation of the air conditioning compressor in electric vehicles, and achieving a wider range of noise reduction frequency coverage and better noise reduction effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI LIXIANG AUTOMOBILE CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-17
AI Technical Summary
In electric vehicles, the exhaust pulsation of the air conditioning compressor causes noise problems inside the vehicle. Existing Helmholtz resonant cavity structures have limited frequency coverage and poor noise reduction effects.
The design incorporates multiple series expansion chambers, with airflow entering from the initial expansion chamber and exiting from the final expansion chamber. Noise is gradually absorbed as the airflow passes through expansion chambers of different frequencies, ensuring that the sound waves of the corresponding frequencies are effectively absorbed in each expansion chamber, thus expanding the noise reduction frequency range.
It improves the silencing frequency range and silencing effect, solves the problems of limited frequency coverage and poor noise reduction effect, and has a simple structure, low cost and high space utilization.
Smart Images
Figure CN224515345U_ABST