Centrifugal compressor and refrigeration system
By employing flexible connecting components and elastic elements in the centrifugal compressor, the gap between the comb seal and the motor shaft is reduced, solving the problem of large gas leakage in the prior art and improving the compressor efficiency.
CN117469181BActive Publication Date: 2026-07-03GREE ELECTRIC APPLIANCE INC OF ZHUHAI
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2023-11-13
- Publication Date
- 2026-07-03
AI Technical Summary
Technical Problem
In existing centrifugal compressors, the radial clearance between the comb seal and the motor shaft is difficult to reduce, resulting in large gas leakage and low compressor efficiency.
Method used
A flexible connection assembly is adopted, including a comb-tooth seal and a bearing sleeve, which are connected by first and second elastic elements to reduce the displacement change of the comb-tooth seal relative to the rotor, forming a dynamic integral component and reducing the gap between the comb-tooth seal and the motor shaft.
Benefits of technology
It effectively reduces gas leakage losses inside the compressor and improves the efficiency of the compressor and unit.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN117469181B_ABST
Abstract
The disclosure relates to a centrifugal compressor and a refrigeration system, wherein the centrifugal compressor comprises a cylinder, a motor shaft arranged in the cylinder and rotatable around an axis thereof, a diffuser arranged radially between the motor shaft and the cylinder, a static pressure radial bearing sleeved on the motor shaft and supported on the cylinder through a bearing support, the static pressure radial bearing being arranged radially with the motor shaft with a first preset gap, a connecting assembly comprising a comb seal part and a bearing sleeve part, the comb seal part being arranged between the diffuser and the motor shaft, the comb seal part being arranged radially with the motor shaft with a second preset gap, the bearing sleeve part being arranged between the bearing support and the static pressure radial bearing, a first elastic member connected between the comb seal part and the diffuser, and a second elastic member connected between the bearing sleeve part and the bearing support.
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