Header and heating pipe dual-channel heat-transferring heat exchanger and process for manufacturing same

Abstract

The invention discloses a header and heating pipe dual-channel heat-transferring heat exchanger and a process for manufacturing the same. The dual-channel heat-transferring heat exchanger comprises two headers which can be circular pipe-type headers or D-shaped headers, wherein a hot air inlet / outlet and a tap water inlet / outlet are fixedly connected to each header; an outer heating pipe is connected between the two headers; tap water heat-absorbing pipes pass through the outer heating pipe and are serially communicated with one another through tap water straight communicating pipes which are positioned in the headers; one end of each tap water heat-absorbing pipe is connected with the tap water outlet, and the other end of each tap water heat-absorbing pipe is connected with the tap water inlet; and inner heating pipes are arranged in part of or all the tap water heat-absorbing pipes and are communicated with the headers. By fully using effective heat energy, two pipe walls for cold fluid in the center of a pipe cavity can be heated, a heat transferring area can be enlarged, hot fluid and the cold fluid can be heated circularly through three channels, and heat exchange efficiency can be improved; and as the dual-channel heat-transferring heat exchanger is made of stainless steel thin-walled pipes and boards by steps of punching, stretching, turning edges and embedding, the welding difficulty of thin-walled stainless steel is reduced, edges are pinched for welding, and scale which is deposited in an inner channel can be cleaned by pouring acid into the inner channel.

Description

technical field [0001] The invention relates to a heating water heater for bathing with tap hot water installed on the heating pipeline of the family bathroom, which can provide heating and heat dissipation as well as exchange heat. Welded heat exchanger and its manufacturing process. Background technique [0002] The applicant applied on October 2, 2003, the date of authorization announcement: December 1, 2004, and the patent number: 200320106748.7, using the new name "radiation heat exchanger". Two types, the shell is a heating channel, the inner pipe is a cold water channel, one type of inner plate copper pipe 15-25M countercurrent or mixed flow type, and the other type is a large cavity box tube plate water storage type, which has been tested by market users and proved to exist Obviously insufficient, the heat transfer area is small, the effect is poor, and it is not practical. The inner pipe is a cold fluid channel, which is bent or coiled with a thinner copper tube. ...

AI Technical Summary

Problems solved by technology

[0006] The present invention overcomes the technical defects of small heat transfer area and low heat exchange efficiency of the above-mentioned existing and original patented technologies, and provides a method of fully utilizing effective heat energy to heat the cold fluid double pipe wall in the center of the lumen, thereby increasing the heat transfer area. Two kinds of cold fluids are heated in three channels to improve heat exchange efficiency. Stainless steel thin-walled tubes and plates are used to make punching, stretching, flanging, and embedded to reduce the difficulty of welding thin-walled stainless steel. The edge is easy to weld, and the inner channel can produce scale. Header heat supply tube dual-channel heat transfer heat exchanger cleaned by acid filling and its manufacturing process

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