Spliced aluminum alloy fin calandria evaporator

Abstract

The invention relates to a spliced aluminum alloy fin calandria evaporator which comprises a plurality of parallelly arranged aluminum alloy fin tubes, elbows, guide screws, partition tubes and holding nuts, wherein every two adjacent aluminum alloy fin tubes and one elbow are connected to form a U-shaped parallel unit, the two aluminum alloy fin tubes of each parallel unit respectively serve as a liquid inlet tube and a liquid outlet tube; the calandria evaporator provided by the invention is also provided with a liquid distributor; and the liquid distributor is provided with a liquid inlet and liquid outlets the quantity of which is same as that of the liquid inlet tubes, the liquid inlet tube of each parallel unit is communicated with a refrigerating fluid inlet tube through the liquid distributor, and the liquid outlet tube of each parallel unit is communicated with a refrigerating fluid outlet tube. The spliced aluminum alloy fin calandria evaporator provided by the invention has the advantages of adopting a parallel connection method to realize more uniform refrigeration, avoiding the problem that the temperature of a refrigerating fluid is increased along with the increment of the length of the passed distance, meeting the requirement of a large cold storage, ensuring the temperature in the large cold storage to be uniform, adopting the aluminum alloy fin tubes, ensuring good heat exchange effect, and ensuring uniformly frosting on fins.

Description

technical field [0001] The invention relates to the technical field of heat exchangers and heat transfer, in particular to a parallel connected aluminum alloy finned tube evaporator. Background technique [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, and pressure inspection are 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 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 temp...

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 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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