Shell-and-tube heat exchanger with refrigerant distribution device

Abstract

The invention discloses a shell-and-tube heat exchanger with a refrigerant distribution device. The shell-and-tube heat exchanger with the refrigerant distribution device comprises a refrigerant outlet pipe, a distribution structure, a tube plate and a barrel. A tube plate is arranged at one end of the barrel; a heat exchange tube and a plurality of segmental baffles are arranged in the barrel; the distribution structure is arranged at a refrigerant inlet at one end of the barrel and comprises a refrigerant distribution tube, a cover plate and an end cover; the refrigerant distribution tube is connected with the cover plate; the cover plate is connected with the end cover; and the end cover is connected with the tube plate. The refrigerant distribution pipe comprises a first-stage distribution pipe, a first-stage transverse pipe, a second-stage distribution pipe, a second-stage transverse pipe and a third-stage distribution pipe; the first-stage distribution pipe communicates with the first-stage transverse pipe; the first-stage transverse pipe communicates with the second-stage distribution pipe; the second-stage distribution pipe communicates with the second-stage transverse pipe; and the second-stage transverse pipe communicates with the third-stage distribution pipe. The shell-and-tube heat exchanger with the refrigerant distribution device has the advantages that the whole size of the shell-and-tube heat exchanger is close to that of an existing product, the matching degree with a system is high, and replacement is convenient. By arranging the inlet distribution structure and the segmental baffles, the amount of heat exchange tubes is reduced by more than 30%.

Description

technical field [0001] The invention belongs to the technical field of heat exchangers, and in particular relates to a shell-and-tube heat exchanger with a refrigerant distribution device. Background technique [0002] Shell-and-tube heat exchangers are mainly composed of cylinders, end covers, tube sheets, baffles, heat exchange tubes and other components. Due to their simple structure, strong adaptability, and easy maintenance, they are widely used in many industrial fields. Applications. When the shell-and-tube heat exchanger is used as the central air-conditioning evaporator, the existing structure has the following disadvantages: the uneven distribution of the working medium in each heat-exchanging copper tube leads to different heat transfer required, and the heat transfer efficiency is low; The waste of thermal area increases the cost; the sealing is difficult and easy to leak; the processing is complicated, etc. Contents of the invention [0003] The purpose of t...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low working efficiency of the existing shell-and-tube heat exchanger, and propose a shell-and-tube heat exchanger with a refrigerant distribution device, which can save the length of the heat exchange tube and greatly improve the work efficiency of the heat exchanger. efficiency

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