Three-way guidance tape typed heat exchanger

Abstract

A heat exchanger of plate type with three channels is featured as including a numbers of heat transfer plates being laminated together, setting distribution equalizer separately at the second inlet and the third inlet between the first layer of heat transfer plate and the second layer of heat transfer plate as well as setting distribution equalizer separately at the second inlet and the third inlet between the third layer and the fourth layer of heat transfer plates and so forth. The service efficiency of said heat exchanger is raised obviously since distribution equalizer is installed at inlet between layers of heat transfer plate.

Description

technical field [0001] The invention relates to a three-channel plate heat exchanger, in particular to an improvement on the structure of equal distribution of inlets and the like. Background technique [0002] A heat exchanger with three channels is used to exchange heat from one fluid with two other fluids. For example: one water stream can be used to evaporate or condense the other two refrigerant streams. [0003] Plate heat exchangers, due to their small size, light weight and low production costs relative to their efficiency, are also widely used as heat exchangers for three-pass heat exchange media. The plates form nearly parallel channels for the three media flows and are sealed and joined by brazing or soldering, preferably vacuum welding, although welding and gluing are sometimes used. [0004] In the refrigeration system using this plate heat exchanger as the evaporator, a difficult problem to solve is that the medium entering the inlet channel of the plate heat...

AI Technical Summary

Problems solved by technology

[0004] In the refrigeration system using this plate heat exchanger as the evaporator, one of the more difficult problems is that the medium entering the inlet channel of the plate heat exchanger is difficult to evenly distribute into each flow channel between the heat transfer plates, so the distribution is not uniform. Some parts of the heat exchanger will not be used effectively. In these parts, the refrigerant will be unnecessarily overheated. One is the low cooling efficiency and the other is energy waste.

[0005] In order to solve the problem of uneven distribution of refrigerant in the above-mentioned plate heat exchanger, there are some solutions in the prior art, such as setting throttling devices in the inlet channel and in the evaporation channel, and the throttling device is integrally made with the heat transfer plate , the plate heat exchanger with this structure is difficult to manufacture, and the assembly process is too cumbersome

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