Compressor cooling system and method including coolant damping chamber

CN120826535APending Publication Date: 2025-10-21COPELAND LLP
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Patent Information

Application Number
CN202480016123.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-03-20
Filing Date
2024-03-12
Publication Date
2025-10-21

AI Technical Summary

Technical Problem

In existing cooling systems, refrigerant drawn from the high-pressure side of the refrigeration system may interfere with the refrigerant flow on the low-pressure side of the compressor, leading to a reduction in compressor performance, efficiency, and lifespan.

Method used

The damping chamber design allows the coolant to be introduced from the high-pressure side into the damping chamber and then flow into the low-pressure pipeline at multiple discrete angles, reducing interference with the low-pressure refrigerant flow.

Benefits of technology

It improves the performance, efficiency and lifespan of the compressor, reduces the interference of the refrigerant on the low-pressure side refrigerant flow, and ensures the stable operation of the system.

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Abstract

A refrigeration system includes a compressor, an evaporator connected to a low pressure line of the compressor, a condenser, an expansion device, and a cooling circuit. The cooling circuit includes: at least one coolant supply line to direct coolant toward the compressor; at least one coolant flow passage defined by a housing of the compressor, the at least one coolant flow passage directing coolant towards a motor of the compressor; a coolant return line that directs coolant toward a low pressure line of the compressor; and a damping chamber between the coolant return line and the low pressure line of the compressor. The damping chamber includes a damping chamber inlet to allow coolant to enter the damping chamber volume from the coolant return line and a damping chamber outlet to allow coolant in the damping chamber volume to enter a low pressure line of the compressor.
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Citation Information

Patent Citations

  • Foil bearing assembly

    US11391291B2

  • Variable inlet guide vane apparatus combined with compressor end cap

    US20240318659A1