Screw compressor refrigerating system and refrigerating method thereof

A screw compressor and refrigeration system technology, applied in compressors, irreversible cycle compressors, refrigerators, etc., can solve the problems of not achieving the oil separation effect, not being able to link with an external oil separator, and low oil separation efficiency , to achieve the effect of improving oil separation efficiency
CN102353167BActive Publication Date: 2013-08-14PANASONIC APPLIANCES REFRIGERATION SYST DALIAN CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PANASONIC APPLIANCES REFRIGERATION SYST DALIAN CO LTD
Publication Date
2013-08-14

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Abstract

The invention discloses a screw compressor refrigerating system and a refrigerating method thereof. The screw compressor refrigerating system comprises a compressor, an internal oil separator, an external oil separator, a condenser, a liquid reservoir, an oil cooling heat exchanger, a super-cooling heat exchanger, an evaporator, a gas liquid separator, an oil reservoir, a low-oil-level alarm and a time delay unit, wherein a refrigeration oil outlet of the internal oil separator is connected with an inlet of the oil reservoir; an oil outlet of the external oil separator passes through an electromagnetic valve B and then is connected with the oil reservoir; and the low-oil-level alarm is arranged on the oil reservoir. Oil separation is realized by arranging the external oil separator, the internal oil separator has an oil separation function without any modification of the compressor, and refrigeration oil which cannot be separated by using the internal oil separator is secondarily separated in the external oil separator, so that oil separation efficiency is improved, and the internal compressor is available in a special working condition.
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Description

technical field

[0001] The invention belongs to the technical field of refrigeration, in particular to a screw compressor refrigeration system and a refrigeration method thereof. Background technique

[0002] In the existing screw unit refrigeration system, there are two ways to configure the oil separator: only the built-in oil separator and only the external oil separator. When the compressor equipped with the built-in oil separator cannot meet the oil separation effect of special working conditions When using the built-in oil separator, it is necessary to remove the filter screen and other components of the built-in oil separator. The cavity of the built-in oil separator without a filter screen will also separate part of the refrigerated oil. The refrigeration oil is separated in the external oil separator. For some compressors whose built-in oil separator cannot be removed, the refrigeration system will have both a built-in oil separator and an external oil separator. ...

Claims

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