Refrigerating condenser without refrigerant superheating section and refrigerating method thereof

Abstract

The present invention discloses a refrigerating condenser without a refrigerant superheating section and a refrigerating method thereof. The refrigerating condenser comprises a horizontal lower end liquid tube and multi-group vertical heat exchange tubes vertically disposed on the horizontal lower end liquid tube; each group of vertical heat exchange tubes is formed by two vertical heat exchange tubes; upper and lowers of the two vertical heat exchange tubes of each group are respectively connected via an elbow so as to form an independent loop; and one end pipeline of the horizontal lower end liquid tube is provided with an air intake tube and a liquid outlet tube, a liquid seal device is disposed on a pipeline between the air intake tube and the liquid outlet tube, and the air intake tube and the liquid outlet tube are separated by the liquid seal device. Refrigerant enters into the air intake tube from an outlet of a compressor and then horizontally enters into the horizontal lower end liquid tube to be mixed with saturated liquid in the horizontal lower end liquid tube for mass and heat transfer, and the mixed saturated gas is distributed to each vertical heat exchange tube for condensation and heat exchange via communicating tubes; and no overheating steam exists in each vertical heat exchange tube, and compared with the prior art, condensation and heat exchange capabilities are largely improved.

Description

technical field [0001] The invention relates to the field of refrigeration and air conditioning, in particular to a refrigeration condenser without a refrigerant superheating section and a refrigeration method thereof. Background technique [0002] The energy efficiency standards of my country's refrigeration industry continue to improve, and the use of enhanced heat transfer technology to improve the overall efficiency of air conditioners also increases the volume of refrigeration heat exchangers. How to improve the heat transfer capacity of refrigeration heat exchangers has become an important research topic. [0003] figure 1 It is a structural diagram of an outdoor unit of an ordinary household air conditioner at present. The heat exchange tubes of the outdoor unit of the air conditioner are arranged in finned tubes and horizontal tubes, and the connection adopts a serpentine tube type. The air is cooled and exchanged by forced convection outside the tubes by the fan. ...

AI Technical Summary

Problems solved by technology

With the continuous increase of condensate, the thickness of the liquid film on the wall is continuously increased, and the factor of the decrease of the flow rate of the refrigerant caused by the decrease of the vapor volume makes the condensation effect deteriorate sharply.

On the air side, due to the thermal resistance of the condensate in the tube, the temperature of the outer wall of the heat exchange tube decreases, and the driving force of heat exchange decreases, which reduces the amount of heat exchange by air forced convection

In order to achieve sufficient heat transfer, it is necessary to increase the heat transfer area to meet the heat transfer requirements. Using fins to increase the outer area of ​​the tube increases the investment cost and the volume is relatively large.

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