Welded wide-flow-channel plate heat exchanger

Abstract

The invention relates to the technical field of plate heat exchangers, in particular to a welded wide-flow-channel plate heat exchanger. The welded wide-flow-channel plate heat exchanger comprises a heat exchanger body, cold flow plates, hot flow plates and spiral fans, wherein a cold outlet, a cold inlet, a hot outlet and a hot inlet are formed in the right side of the heat exchanger body; the multiple cold flow plates and the hot flow plates are welded in the heat exchanger body and are alternately overlapped, a channel is formed between each cold flow plate and the corresponding hot flow plate, two cold through holes are formed in the left sides of the cold flow plates and the hot flow plates, two hot through holes are formed in the right sides of the cold flow plates and the hot flow plates, and the cold through holes are connected to form a cold channel which is connected with the cold outlet and the cold inlet; the heat through holes are connected to form a heat channel to be connected with the heat outlet and the heat inlet; and a spiral fan is welded in a channel between each cold flow plate and the corresponding hot flow plate; and when fluid enters the channels, the spiral fans in the channels are driven to rotate, and the rotation of the spiral fans accelerates the flowing of the fluid to form turbulent flow, so that the purpose of preventing blockage caused by scale deposition is achieved.

Description

technical field [0001] The invention relates to the technical field of plate heat exchangers, in particular to a welded wide flow channel plate heat exchanger. Background technique [0002] A heat exchanger is an energy-saving device that transfers heat between materials between two or more fluids at different temperatures. It transfers heat from a fluid with a higher temperature to a fluid with a lower temperature, so that the fluid temperature reaches the process The specified index is to meet the needs of the process conditions, and it is also one of the main equipment to improve energy utilization; the typical one is the plate heat exchanger. [0003] Plate heat exchanger has a long history of industrial application, and it still occupies a dominant position in all heat exchangers. The main structure is composed of heat exchange plates and rubber strips between the plates. Thin rectangular channels are formed between various plates, and heat is exchanged through the pla...

AI Technical Summary

Problems solved by technology

[0004] However, during the working process, due to the substandard water quality, improper operation of water treatment equipment, and the temperature difference between the hot and cold medium, it is easy to form scale on the surface of the plate heat exchanger, which will cause poor heat conduction and reduce the heat exchange effect. Local pitting and perforation leakage; especially for welded plate heat exchangers, because they cannot be disassembled, it is difficult to repair once scale accumulation occurs;

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