Hexagonal and ditrigonal mixed channel contact-heat-resistance-free heat transfer element

Abstract

The invention provides a hexagonal and ditrigonal mixed channel contact-heat-resistance-free heat transfer element applied to various heat exchangers, and belongs to the technical field of heat exchange. The element is composed of corrugated cooling fins and a rectangular heat transfer flat tube, the rectangular heat transfer flat tube is evenly provided with hexagonal pipelines and ditrigonal pipelines, and the mixed pipelines greatly increase the cooling ratio and greatly improve collision resistance, pressure resistance and bearing force. According to the hexagonal and ditrigonal mixed channel contact-heat-resistance-free heat transfer element, strength of the heat transfer element is enhanced, the ability to work under severe conditions is improved, the corrugated cooling fins and the heat transfer flat tube are integrally machined and formed, and welding is not needed; contact heat resistance does not exist, and heat transfer efficiency is high; the manufacturing process is simple, the structure is compact, the size is small, vibration resistance is high, and accordingly the hexagonal and ditrigonal mixed channel contact-heat-resistance-free heat transfer element can be widely used in heat exchangers of various products such as air conditioners, refrigerating equipment and vehicles.

Description

technical field [0001] The invention relates to a hexagonal and double triangular mixed channel non-contact thermal resistance heat transfer element applied to various heat exchangers, belonging to the category of thermodynamic mechanical devices. Background technique [0002] The heat transfer elements used on the heat exchangers of existing air conditioners, vehicles, and refrigeration equipment are generally composed of copper tubes (or aluminum tubes) and aluminum fins. It is a split structure, the manufacturing process is complicated, the manufacturing cost is increased, the performance is poor, and the contact thermal resistance is increased, the strength is weak, and the anti-vibration ability is poor. It is generally composed of copper tubes, aluminum tubes or microchannel tubes and aluminum fins, and the heat transfer tubes and fins of the heat transfer elements used at this stage are split structures, so that the contact heat between the fins and the heat transfer tu...

AI Technical Summary

Problems solved by technology

[0002] The heat transfer elements used on the heat exchangers of existing air conditioners, vehicles, and refrigeration equipment are generally composed of copper tubes (or aluminum tubes) and aluminum fins. It is a split structure, the manufacturing process is complicated, the manufacturing cost is increased, the performance is poor, and the contact thermal resistance is increased, the strength is weak, and the anti-vibration ability is poor. It is generally composed of copper tubes, aluminum tubes or microchannel tubes and aluminum fins, and the heat transfer tubes and fins of the heat transfer elements used at this stage are split structures, so that the contact heat between the fins and the heat transfer tubes The resistance is relatively large; the anti-vibration ability is poor, and the working environment of the heat exchanger in construction machinery is harsh, which often leads to local loosening or even fracture at the connection between the cooling fin and the heat transfer tube after a period of time, so It will also increase the contact thermal resistance, resulting in a significant decline in its heat transfer performance; at the same time, due to the lack of copper resources in my country, the price of copper used to manufacture heat transfer tubes has risen in recent years, greatly increasing the production cost of heat exchangers

At the same time, the channel strength of the heat transfer flat tube in the existing heat transfer element is weak, and its service life is low when working under harsh conditions, which will affect production and life in serious cases

And the anti-collision force and load-bearing capacity are also poor

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