Compression assembly, compressor and refrigeration apparatus

By introducing a pressure relief channel into the compression assembly and changing the refrigerant flow frequency, the problems of compressor axial vibration and noise were solved, resulting in more stable and quieter compressor operation.

WO2026113267A1PCT designated stage Publication Date: 2026-06-04ANHUI MEIZHI PRECISION MFG +2
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ANHUI MEIZHI PRECISION MFG
Filing Date
2025-05-13
Publication Date
2026-06-04

AI Technical Summary

Technical Problem

In existing technologies, the axial vibration and noise problems of compressors are mainly caused by the superposition of axial impacts of the refrigerant in the first silencing chamber, resulting in unstable compressor operation.

Method used

A pressure relief channel is introduced into the compression assembly. One end of the pressure relief channel is connected to the connecting channel, and the other end is connected to the external space of the pump assembly. This changes the axial vibration frequency of the refrigerant flow and reduces the axial impact and gas pulsation of the refrigerant in the silencing cavity.

Benefits of technology

It effectively reduces the axial vibration and noise of the compressor, improves the operating stability and quietness of the compressor, and reduces gas pulsation.

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  • Figure CN2025094462_04062026_PF_FP_ABST
    Figure CN2025094462_04062026_PF_FP_ABST
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Abstract

Provided in the present application are a compression assembly, a compressor and a refrigeration apparatus. The compression assembly comprises a crankshaft, a pump assembly, a first silencer and a second silencer, wherein the pump assembly is sleeved on the crankshaft and is provided with a first exhaust port, a second exhaust port and a communication channel; the first silencer is disposed on a first side of the pump assembly in the axial direction and covers the first exhaust port, and the first silencer and the pump assembly enclose a first silencing chamber; the second silencer is disposed on a second side of the pump assembly in the axial direction and covers the second exhaust port, and the second silencer and the pump assembly enclose a second silencing chamber, the second silencing chamber being in communication with the first silencing chamber by means of the communication channel; and the pump assembly is provided with a pressure relief channel, one end of the pressure relief channel being in communication with the communication channel, and the other end of the pressure relief channel being in communication with an external space of the pump assembly. Some of a refrigerant flowing through the communication channel is discharged out of the pump assembly via the pressure relief channel, thereby reducing the axial impact caused by refrigerant flow, and reducing the axial vibration of a compressor.
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