Header box double-cavity channel shell-pipe water storage instant heat exchanger

Abstract

The invention discloses a header box double-cavity channel shell-pipe water storage instant heat exchanger. The header box double-cavity channel shell-pipe water storage instant heat exchanger comprises two header boxes, a plurality of shell round pipes are inserted into header box pore plates to be connected in a welded mode, at least one heating pipe is arranged in pipe cavities of the pluralityof shell round pipes, the heating pipes penetrate through the pipe cavities to be welded to heating pipe connecting pore plates, the heating pipes are fixedly connected with the two ends of the heating pipe connecting pore plates in a reinforcing mode, deformation of the header box pore plates are reduced, the water leakage rate is reduced, inner end cover plates are hermetically welded and blockthe header box pore plates, the end port parts of the heating pipe connecting pore plates form a cold fluid inner cavity channel, header box outer side plates are welded and fixedly connected with the header box pore plates, external end cover plates are hermetically welded and block the header box outer side plates, the end port parts of the header box pore plates form a heat fluid outer cavitychannel, a warm air inlet pipe joint and a warm air outlet pipe joint are arranged on the header box outer side plates or the external end cover plates and communicate with a hot fluid pipe cavity forcirculation, and a cold water inlet pipe joint and a cold water outlet pipe joint are arranged on the header box outer side plates or the external end cover plates and communicate with the cold and hot fluid pipe cavities for circulation.

Description

Technical field [0001] The present invention relates to the technical field of HVAC, a household heating conversion water heater that uses household heating as a heat source to exchange hot water, and specifically relates to a double-cavity channel shell and tube water storage and instant heat exchange type of header made of stainless steel or low-carbon steel pipe Heater. Background technique [0002] In the current market circulation field, domestic heating conversion water heaters (collectively referred to as heat exchangers), the existing technology has shortcomings: the inner cavity of the header stores a lot of cold water, the cold water stored in the inner cavity of the header is heated, and the thermal expansion stress is large, the header orifice and the cold water pipe The welded cross-section is easy to tear and leak. There is a problem with the joint orifice plate and the pipe circumferential seam welding. The cross section is small, the strength is poor, and the pres...

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Problems solved by technology

[0002] At present, household heating conversion water heaters (collectively referred to as heat exchangers) in the market circulation field have deficiencies in the existing technology: the inner cavity of the header is large and stores a lot of cold water, the cold water stored in the inner cavity of the header is heated and the thermal expansion stress is large, the orifice plate of the header and the cold water pipe The welded cross-section is easy to tear and leak. There is a small welding cross-section between the orifice plate of the header and the circular seam of the pipe, which has poor strength and low compressive capacity. Make the orifice plate of the header easy to deform and crack, resulting in high leakage rate

It is also possible to arrange a ring-shaped hollow reinforcing plate or reinforcing rib parts in the nozzle to improve the strength and compressive capacity of the orifice plate, but the waste of raw materials and high labor costs are high, so there are defects in the existing technology

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