High-efficiency air blocking-free honeycomb cellular type heat exchanger

Abstract

The invention relates to a high-efficiency air blocking-free honeycomb cellular type heat exchanger without an air plug, which comprises a heat exchange unit body, upper and lower cold and hot fluid separating and merging devices arranged at two ends of the heat exchange unit body and cold fluid inlets, cold fluid outlets, hot fluid inlets and hot fluid outlets which are formed at both ends of the cold and hot fluid separating and merging devices reversely, wherein the heat exchange unit body is has a honeycomb structure which is formed by metal integrally and is formed by honeycomb holes which are adjacent mutually; the cold and hot fluid separating and merging devices and a diversion trench are combined into a whole; a dividing wall seal groove is formed on a dividing wall between everytwo rows of honeycomb holes on two end faces of the heat exchange unit body, a seal frame is arranged on the peripheries of the two end faces, and each dividing wall seal groove is connected with theseal frame to form integral seal; a flow dividing groove or a flow converging groove and the upper and lower separating and merging devices are integrated into a whole; and 1 to 10 groups of cold fluid inlets and the hot fluid outlets are arranged alternately. The high-efficiency honeycomb cellular type heat exchanger has high heat exchange efficiency and good integral seal effect and is convenient to disassemble and wash.

Description

technical field [0001] The invention relates to a high-efficiency air-blocking honeycomb hole heat exchanger. Background technique [0002] Existing partition heat exchangers can be divided into shell-and-tube heat exchangers, plate heat exchangers, casing heat exchangers, etc. according to different heat transfer surfaces; among them, plate heat exchangers have high heat transfer coefficients and good energy-saving effects. But it is not pressure-resistant and easy to block, which greatly limits the application range of plate heat exchangers. Although the shell-and-tube heat exchanger is pressure-resistant, its heat transfer coefficient is low, and it takes up a lot of space, so it is not energy-saving. Chinese patent specification ZL200920095299.8 discloses a honeycomb ceramic heat exchanger, which consists of one or more main heat exchange basic units and two or twice the number of main heat exchange basic units. Flue gas exchanges heat with the heated gas. Due to the u...

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Problems solved by technology

[0002] Existing partition heat exchangers can be divided into shell-and-tube heat exchangers, plate heat exchangers, casing heat exchangers, etc. according to different heat transfer surfaces; among them, plate heat exchangers have high heat transfer coefficients and good energy-saving effects. But it is not pressure-resistant and easy to block, which greatly limits the application range of plate heat exchangers

Although the shell-and-tube heat exchanger is pressure-resistant, its heat transfer coefficient is low, and it takes up a lot of space and is not energy-saving.

Chinese patent specification ZL200920095299.8 discloses a honeycomb ceramic heat exchanger, which consists of one or more main heat exchange basic units and two or twice the number of main heat exchange basic units. Flue gas exchanges heat with the heated gas. Due to the use of ceramic materials with poor thermal conductivity, the volume is large, the heat exchange efficiency is not high, the pressure is not withstandable, the application range is narrow, and internal leakage is easy to occur.

Chinese patent specification CN101907411A discloses a plate-hole cascaded heat exchange device, which includes a honeycomb plate-type heat exchange element that is superimposed by several honeycomb hole plates and sealed heat insulation pads or sealants with the same shape and size. The plate holes of the heat exchanger are made of metal materials, and there are several rows of cold and hot fluid through holes arranged staggeredly on the honeycomb plate holes. Although the heat exchange rate can be improved, because the main body of the heat exchange adopts the superimposed method of honeycomb hole plates, it is inconvenient to install. Seal with heat insulation pad or sealant, there are many leakage points, the sealing effect is not good, and it is difficult to withstand high pressure

Through experiments, it is found that it has the following disadvantages: (1) There are still air blockages and bottleneck effects, and it is difficult to release the highest heat exchange efficiency; (2) The overall sealing effect is not ideal; (3) It is not convenient to disassemble and clean the heat exchanger

In addition, there is only one set of cold fluid inlet and outlet and hot fluid inlet and outlet. This structure will cause a bottleneck effect in the diversion groove, hindering the rapid flow of fluid. Inner gas enters the end to cause gas blockage

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