Staggered-parallel-type aluminum alloy finned tube evaporator

Abstract

The invention relates to a staggered-parallel-type aluminum alloy finned tube evaporator which comprises a plurality of finned tubes and a bend tube; the plurality of finned tubes are arrayed in parallel; the two adjacent finned tubes are staggered up and down; the upper fins of the lower finned tubes are corresponding to the lower fins of the upper finned tubes; two finned tubes at intervals are at the same level; two ends of the bend tube are respectively connected with two finned tubes, thus a parallel unit is formed; two finned tubes of each parallel unit are respectively a liquid inlet tube and a liquid outlet tube, and are provided with a liquid distributor; the liquid distributor is provided with a liquid inlet and liquid outlets the number of which is corresponding to the number of the liquid inlet tubes; the liquid inlet tubes of each parallel unit are communicated with a refrigerant liquid inlet pipeline through a liquid distributor; and the liquid outlet tubes of each parallel unit are communicated with the refrigerant liquid inlet pipeline. According to the invention, through adopting the up and down staggered array mode of the finned tubes, the mutual influence between the adjacent finned tubes is reduced, the refrigeration speed is accelerated, more uniform refrigeration is realized through the parallel connection mode, the frosting on the fins is uniform.

Description

technical field [0001] The invention relates to the technical field of heat exchangers and heat transfer, in particular to a staggered parallel type aluminum alloy fin tube evaporator. Background technique [0002] The tube-type evaporators used in the existing refrigeration system are mainly composed of finned tubes and elbows. , Welding, cleaning, pressure inspection is troublesome, and the quality is difficult to guarantee. Steel pipes are easy to corrode, there are many system failures, and the cost of copper pipes is high. The finned tubes of the existing tube-type evaporator are arranged side by side, and a plurality of finned tubes are in the same plane. This structure has slow cooling and less heat exchange surface, and two adjacent finned tubes will affect each other, reducing the cost. Slow cooling speed. The existing tube-type evaporators are in series. When used in large-scale cold storage, the temperature of the refrigerant in the finned tube increases with t...

AI Technical Summary

Problems solved by technology

[0002] The row-and-tube evaporator used in the existing refrigeration system is mainly composed of finned tubes and bent tubes. Most of them use seamless steel tubes or copper tubes, which are bent, welded and supported on site. This method has a long construction period on site. , Welding, cleaning, pressing and inspection are troublesome, and the quality is difficult to guarantee

Steel pipes are prone to corrosion, many system failures, high cost of copper pipes

The finned tubes of the existing tube-and-tube evaporator are arranged side by side, and multiple finned tubes are on the same plane. This structure has slow cooling and less heat exchange surface, and two adjacent finned tubes will affect each other, reducing slow cooling rate

The existing row-and-tube evaporator adopts a serial form. When it is used in a large-scale cold storage, due to the long length of the pipeline, the temperature of the refrigerant in the finned tube increases with the increase of the distance passed, resulting in a large increase in the temperature of the refrigerant in the finned tube. The temperature of the cold storage is inconsistent, which reduces the heat transfer effect and the refrigeration effect is not ideal, resulting in uneven temperature in the large cold storage

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