Ejecting oil return refrigerating system with oil liquid separator

Abstract

The invention discloses an ejecting oil return refrigerating system with an oil liquid separator. The refrigerating system comprises a liquid storage device, a condenser, an oil separator, a compressor, a low-pressure circulation barrel, an evaporator and the oil liquid separator separating refrigerating oil and refrigerating fluid. The liquid storage device is connected with a liquid supply pipe of the oil liquid separator through a pipeline. A liquid outlet pipe and an air outlet pipe of the oil liquid separator are connected with the low-pressure circulation barrel through pipelines respectively. The low-pressure circulation barrel is connected with a liquid return pipe of the oil liquid separator through a pipeline. An oil outlet pipe of the oil liquid separator is connected with an oil separator pipeline through an ejector. The compressor sucks gas from the low-pressure circulation barrel and conducts compression. An exhaust pipeline of the compressor is connected with the ejector. The ejector is connected with the oil separator pipeline. Refrigerant oil in the oil outlet pipe of the oil liquid separator is ejected into the oil separator through the ejector via gas in the exhaust pipeline of the compressor, and the oil outlet of the oil separator is connected with the compressor through the oil supply pipe. The ejecting oil return refrigerating system is stable in oil return and capable of avoiding liquid shocking or oil shocking.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to an oil-injection return refrigeration system with an oil-liquid separator. Background technique [0002] At present, the fluorine pump liquid supply refrigeration system used in the cold storage, on the one hand, the miscibility between the fluorine refrigerant and the refrigeration oil of the compressor is better, which will cause the refrigeration oil in the refrigeration compressor to be in liquid form with the operation of the refrigeration system. When it is discharged into the evaporator, a large amount of refrigerated oil stays in the evaporator pipeline and directly affects the cooling of the system. On the other hand, the density of fluorine refrigerant is higher than that of refrigeration oil, so after the oil-liquid mixture is precipitated and separated in the low-pressure circulation barrel, the refrigeration oil floats above the fluorine refrigerant, ...

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Problems solved by technology

[0003] In response to the above problems, the present invention researches and designs an ejection oil return refrigeration system with an oil-liquid separator, so as to overcome the large amount of oil return of the compressor in the prior art, unstable oil return, and easy occurrence of liquid shock or oil return. hit question

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