Flash evaporator and refrigerating system

Abstract

The invention discloses a flash evaporator and a refrigerating system. The flash evaporator comprises an inner cavity, and further comprises an inlet tube, a heat exchange tube, a micro-channel structure and a centrifugal pan, wherein the inlet tube is located in the inner cavity; the heat exchange tube is arranged at the bottom part of the inner cavity; the heat exchange tube communicates with anair suction pipeline of a compressor; a refrigerant before entering an air suction port of the compressor flows in the heat exchange tube; the micro-channel structure is connected with the tail end of the inlet tube; the micro-channel structure is located above the heat exchange tube; the liquid refrigerant in the inlet tube is adhered to the heat exchange tube after passing through the micro-channel structure; the centrifugal pan is located in the inner cavity; the centrifugal pan spirally sheathes the inlet tube; the flash evaporator is provided with an air supplement port; and the air supplement port and the centrifugal pan are correspondingly arranged in position. The flash evaporator and the refrigerating system effectively solve the problem that a compressor is damaged due to the fact that high-pressure stage liquid entrainment during air suction is easily caused by the fact that gas-liquid separation of a flash evaporator is not thorough in the prior art.

Description

technical field [0001] The invention relates to the technical field of refrigeration systems, in particular to a flash evaporator and a refrigeration system. Background technique [0002] CO 2 As the latest generation of refrigerant, its transcritical cycle is currently being used more and more widely in the refrigeration industry, such as container refrigeration units, automotive air conditioners, heat pump water vapor, commercial refrigerators and other systems. Due to CO 2 Under normal conditions, the pressure is high and the boiling point is low. In a supercritical cycle, two-stage compression is usually required. A flash evaporator is required between the low-pressure stage and the high-pressure stage to achieve rapid vaporization of the fluid and separation of the two phases. There are following deficiencies in the flash evaporator in the prior art: [0003] Most of the flash evaporators adopt large-space sedimentation and separation, and the gas-liquid separation i...

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Problems solved by technology

[0004] In the embodiment of the present invention, a flash evaporator and a refrigeration system are provided to solve the problem of incomplete gas-liquid separation in the flash evaporator in the prior art, which may easily cause liquid in the high-pressure stage suction and damage the compressor.

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