Heat exchange system of refrigerating unit

Abstract

The invention provides a heat exchange system of a refrigerating unit. The heat exchange system of the refrigerating unit comprises a first heat exchanger, and the first heat exchanger comprises an oil-cooling heat exchange tube, a refrigerant heat exchange tube and a heat exchange medium passage, wherein the oil-cooling heat exchange tube and the refrigerant heat exchange tube are independent from each other and share the heat exchange medium passage for heat exchange. By the aid of the integral structure combining an oil-cooling heat exchanger with the side-refrigerating heat exchanger, the problem that a waterway of the oil-cooling heat exchanger is frozen in winter is prevented, and reliability of an oil-cooling system is improved while the problem of waterway bypassing when the oil-cooling heat exchanger is unused is also solved. A heat exchange medium connecting pipeline of the heat exchange system of the refrigerating unit is omitted, and the number of the exchangers is decreased, so that the cost of the oil-cooling system of the refrigerating unit is lowered greatly. Besides, when the refrigerating unit is used for heating, the heating performance of the unit is also improved by oil-cooling heat exchange.

Description

technical field [0001] The present invention relates to the field of refrigeration, in particular to a heat exchange system of a refrigeration unit (including a heat pump unit, the same below), for example, to a combined shell-and-tube heat exchanger with oil cooling function, especially to a water-based Combined shell and tube heat exchanger with oil cooling function for refrigeration units using side heat exchange medium. Background technique [0002] In the refrigeration compressor, the refrigeration oil plays a role in the lubrication of moving parts, taking away the heat generated by relative motion, and sealing the compression chamber. The stability of the refrigeration oil system plays a vital role in the safe operation of the compressor. Such as figure 1 As shown, the refrigerant is compressed by the compressor 1, and the high-temperature and high-pressure exhaust gas enters the condenser 2 to condense into a liquid. The heat exchanger (first heat exchanger) 5 evap...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a heat exchange system of a refrigeration unit to solve the problem that the existing oil cooling heat exchanger is easy to freeze and crack

Furthermore, the present invention will also solve the problem of wasting cooling water in existing oil cooling heat exchangers

Furthermore, the present invention also solves the problem of complex structure and high cost of the existing oil cooling heat exchanger pipeline system

Furthermore, the present invention also solves the problem that the existing refrigerating unit heat exchange system or refrigerating unit is inconvenient to install, and the use and installation are limited by the space of the place

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