Refrigerating equipment

A refrigeration device and refrigerant technology, which is applied to household refrigeration devices, cooling fluid circulation devices, refrigerators, etc., to achieve the effect of suppressing abnormal sounds
CN1296661CInactive Publication Date: 2007-01-24DAIKIN IND LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DAIKIN IND LTD
Publication Date
2007-01-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

Refrigerating equipment so formed that gas refrigerant is filled into the suction tubes (10a, 10b) of compressors (2A, 2B) through an oil return passage (21) and a gas injection passage, comprising a liquid injection passage (15) for filling liquid refrigerant to the suction sides of the compressors (2A, 2B), wherein the oil return passage (21) and gas injection passage are connected to the liquid injection passage (15), whereby abnormal noise caused by the mixing of gas refrigerant in the suction tubes (10a, 10b) can be prevented.
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Description

technical field

[0001] The present invention relates to refrigerating equipment, and more particularly to measures for reducing the noise generated on the suction side of a compressor due to oil return, gas injection, and the like. Background technique

[0002] Conventionally, there is a refrigerating apparatus that performs a vapor compression refrigerating cycle. The refrigerating apparatus is mainly used as a cooler of an air conditioner for cooling and heating a room, and is widely used as a cooler of a refrigerator, a freezer, and the like for storing food and the like. This refrigerating apparatus performs a vapor compression refrigerating cycle by sequentially passing refrigerant discharged from a compressor through a condenser, an expansion mechanism, and an evaporator.

[0003] In this refrigerant circuit, the refrigerant discharged from the compressor contains refrigerating machine oil for lubricating the inside of the compressor. In order to return the refrigera...

Claims

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