Round header shell-and-tube water storage central heating multi-pipe heat-conducting heat exchanger and production technique thereof

Abstract

The invention relates to a round header shell-and-tube water storage central heating multi-pipe heat-conducting heat exchanger and a production technique thereof. Each header body comprises a header outer side arc plate, a header inner side arc orifice plate, and an end cover plate; a plurality of circular cold water pipes are connected between header bodies, at least one circular central heating pipe is arranged in the cavity of each circular cold water pipe, and the pipe orifices of the circular cold water pipes are connected with circular central heating pipe connecting plugging plates; hot fluid in the circular central heating pipe and a header inner cavity form a circulating heat transfer fluid channel; the pipe orifices of the circular cold water pipes insert the header inner side arc orifice plate, and the circular cold water pipes are welded and communicated with circular cold water communicating pipes; a cold water inlet pipe joint and a cold water heat exchange outlet pipe joint are communicated with the circular central heating pipe connecting plugging plate and then are welded and fixedly connected with header outer side arc plate, and form a heat transfer fluid channel together with the cavities of the circular cold water pipes. The round header shell-and-tube water storage central heating multi-pipe heat-conducting heat exchanger is large in heat exchange area increased by 45%-100%, shells and tubes are used for storing water, the multi-pipe heat conducting effect of the central heating pipes is good, no stress generates, and no water leakage exists in the cracked welding position. When people have a shower, continuous flowing hot water which is close to the temperature of a heat source can be supplied.

Description

technical field [0001] The invention relates to a heating heat exchanger which can be installed and used on a household heating pipe network for heating and exchanging hot water for bathing, in particular to a round header shell tube water storage heating multi-tube heat conduction heat exchanger and its manufacturing process . Background technique [0002] 1. The applicant of this patent applied for a patent with the patent number 200720018426.5 and the patent name "anti-fouling heat exchanger" on February 4, 2007, and the authorized announcement number is CN201003913Y. [0003] 2. The applicant for this patent submitted a patent application with the patent number 201110398505.4 on December 5, 2011, and the title of the invention is "A pressure-bearing heat exchanger connected by circular tubes connected with pinched edges and its manufacturing process". The number is CN102418956A. [0004] The above-mentioned "anti-scaling heat exchanger" and "round tube connected and we...

AI Technical Summary

Problems solved by technology

[0005] 3. Patent search: On April 28, 2007, Zhao Yang, Tianjin Jiuding Stainless Steel Products Co., Ltd. applied for a patent with the patent number 200720095904.2, the announcement number CN201034421Y, and the patent titled "A Steel Tube Cylindrical Radiator". The patent has a complex structure Difficult to manufacture, the upper and lower main water pipes can be directly connected to the heat dissipation pipes by welding, there is no need to use a conical shape, a water connection, and a closed cover with an outer flange to connect the upper and lower main water pipes, which increases the difficulty of processing and welding, and causes water leakage rate, higher manufacturing costs

Waste of working hours Raw materials are outdated products

[0006] 4. The applicant of this patent applied for the patent No. 201210453056.3 on November 13, 2012, and the title of the invention is "A Heat-absorbing Heat Exchanger Connected to the Open Header Cold Water Pipe". In this patent, the header cavity is The cold fluid channel, the heat supply pipe is a shell tube, and the heat taken away by the cold water pipe installed in the heat supply pipe, that is, the heat exchange cannot keep up with the outflow of hot water, interruption of cooling, low effective utilization rate of heat source, poor effect and other technical problems

[0008] In addition, in the bathing process of the water storage heat exchanger in the technical solution of the prior art, the heat-conducted water (cold water before) is stored in the heat exchanger at the beginning. Due to the limited amount of hot water stored in the heat exchanger, it will be used up during the bath, which is not enough to complete the entire normal bathing process. Therefore, it is necessary to wait for the newly entered cold water in the heat exchanger to be heated before using it. The outflow of hot water and the heat exchange of cold water cannot be connected, and there will be a situation of waiting for heating many times round after round, so that the hot water for bathing cannot flow out continuously, affecting technical problems such as poor heat exchange effect for bathing

[0009] In order to meet the continuous flow of hot water in a sufficient amount when taking a bath, heat exchanger manufacturers generally increase the diameter of the cold water round pipe or increase the number of cold water pipes to increase the water storage capacity and prolong the exchange process, so as to achieve the hot water stored in the memory. Outflow and incoming cold water exchange connection problem, which not only increases the manufacturing cost, wastes raw materials, but also increases the volume of the product, increases the transportation cost, takes up a lot of space during installation, and more importantly, the heat of the fluid in the center of the heating circular tube is not easy to be cooled The fluid is exchanged and absorbed, and most of it is lost, so the heat transfer effect is poor

Images