Jacket gas uniformizing structure, supporting plate assembly and heat exchange device

Abstract

The invention discloses a jacket gas uniformizing structure, a supporting plate assembly and a heat exchange device using the same. The jacket gas uniformizing structure comprises a jacket cylinder and a jacket sealing ring, the outer wall of a heat exchanger cylinder and the inner wall of the jacket cylinder form a closed annular space, and gas uniformizing holes or grooves are formed at the upper part of the outer wall of the heat exchanger cylinder; and the annular space is communicated with a heat exchange space in the heat exchanger cylinder through the gas uniformizing holes or grooves;and an air inlet or an air outlet is formed in the side wall of the jacket cylinder. The supporting plate assembly is composed of a plurality of supporting plates with different vent holes, an air baffle and a bottom rib plate. The supporting plates with different ventilation notches provide channels for refrigerant gas and liquid to flow, the risk that the refrigerant liquid flows along the pipewall of a heat exchange pipe is reduced, and the heat exchange efficiency is improved.

Description

technical field [0001] The invention relates to a heat exchange device for a chiller, in particular to an air equalizing structure, a support plate assembly and a heat exchanger using the air equalizing structure. Background technique [0002] Heat exchanger is an important part of air-conditioning refrigeration and industrial refrigeration units, including evaporators and condensers, and its heat exchange efficiency directly affects the performance of the unit. The heat exchanger can be divided into two types: horizontal heat exchanger and vertical heat exchanger in form; the horizontal heat exchanger has a stable and safe structure, occupies a large area, is easy to maintain and clean, has a medium heat transfer coefficient, and has a short heating residence time , the heat transfer effect is moderate. The vertical heat exchanger needs to be laid vertically, occupies less land, has high requirements for the clear height of the installation space, compact structure, and ea...

AI Technical Summary

Problems solved by technology

[0005] 2) The air inlet is set on one side of the cylinder, which makes the gas flow velocity distribution in the upper part of the condenser uneven and the condensation efficiency is low

[0006] 3) The liquid film produced by continuous condensation along the vertical tube wall affects the heat transfer

As the condensed liquid continues to flow and accumulate downwards, a large heat conduction resistance is formed outside the tube, so that the performance of the condensing tube cannot be fully utilized, resulting in a great waste of resources in the condensing tube, resulting in low heat transfer efficiency of the condenser

[0007] 4) The evaporator uses the liquid low-temperature refrigerant to evaporate easily under low pressure, transform into vapor and absorb the heat of the cooled medium, so as to achieve the purpose of refrigeration; compared with the horizontal evaporator, the vertical evaporator has a higher pipe layout rate , small footprint, under the same heat transfer area, the overall size of the container is smaller and the cost is low, but the existing vertical evaporator has the following technical disadvantages: the exhaust port is set on the side of the cylinder, causing the upper part of the evaporator to flow The uneven distribution of gas flow rate makes the liquid level near the suction port too high, resulting in liquid in the suction

[0008] 5) The exhaust port is directly arranged on the cylinder, and the effective height between the suction port and the liquid surface of the evaporator is reduced, which reduces the liquid filling amount and reduces the heat exchange efficiency

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