A rotor compressor with a backflow prevention structure and a working method thereof
By setting an enthalpy-increasing channel and a movable baffle on the outer circle of the intermediate plate, the channel can be automatically opened and closed by utilizing the gas pressure difference, which solves the problem of gas backflow in the compressor, improves heating capacity and operating efficiency, and reduces noise.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BITZER ROTARY COMPRESSOR (JIANGSU) CO LTD
- Filing Date
- 2026-04-13
- Publication Date
- 2026-07-17
AI Technical Summary
During compressor operation, the gas in the high-pressure chamber may flow in the reverse direction along the gas supply channel, resulting in gas backflow, which leads to reduced efficiency and increased noise.
An enthalpy-increasing channel is set on the outer circle of the intermediate plate, including a first channel, a second channel and a third channel that are connected to each other. An annular groove is opened in the inner wall of the first channel. A partition is movably set in the annular groove. A through hole is set on the partition near the edge, penetrating the thickness direction. The partition is driven to move in the annular groove by the gas pressure difference, so as to realize the intelligent opening and closing of the enthalpy-increasing channel.
It effectively prevents high-pressure gas backflow, improves the compressor's heating capacity and operating efficiency, and reduces noise. It also features a compact structure and high reliability.
Smart Images

Figure CN122407544A_ABST