Tube and box structure, shell and tube heat exchanger and air conditioner

Abstract

The invention provides a tube box structure, a shell and tube heat exchanger and an air-conditioner. The tube box structure comprises a shell (1) and a refrigerant liquid inlet connection pipe (2) connected to the shell (1). A liquid equalizing cavity (3) is formed in the shell (1). A flow equalizing pipe (4) and a first flow equalizing plate (5) located on the outlet side of the flow equalizing pipe (4) are arranged in the liquid equalizing cavity (3). The flow equalizing pipe (4) is connected to the outlet position of the refrigerant liquid inlet connection pipe (2). According to the tube box structure, the flow equalizing effect of the heat exchanger can be improved, and the heat exchange efficiency of the heat exchanger is also improved.

Description

technical field [0001] The invention relates to the technical field of air treatment, in particular to a tube-box structure, a shell-and-tube heat exchanger and an air conditioner. Background technique [0002] At present, in the refrigeration industry, the dry evaporator, as an integral part of the entire refrigeration system, plays a vital role in the entire refrigeration system. However, since the refrigerant cannot uniformly enter the heat exchange tube, the heat exchange efficiency of the shell and tube will be affected. Based on this point, the heat exchanger has been improved in the prior art, and a flow equalizer is installed at the inlet of the tube box, but the flow equalizer is fixed on the tube sheet by screws. First, the screws occupy the position of the heat exchange tubes. , leading to a reduction in the number of heat exchange tubes that can be distributed; second, this flow sharing method may lead to uneven conditions such as high velocity in the middle and...

AI Technical Summary

Problems solved by technology

However, since the refrigerant cannot enter the heat exchange tube evenly, it will affect the heat exchange efficiency of the shell and tube.

Based on this point, the heat exchanger has been improved in the prior art, and a flow equalizer is installed at the inlet of the tube box, but the flow equalizer is fixed on the tube sheet by screws. First, the screws occupy the position of the heat exchange tubes. , leading to a reduction in the number of heat exchange tubes that can be distributed; second, this flow sharing method may lead to uneven conditions such as high velocity in the middle and low velocity on both sides, resulting in problems such as reduced heat exchange efficiency

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