Turbulence self-cleaning reduced pressure pipeline exchange water heater

Abstract

The invention relates to a household heating-type exchange water heater utilizing water heating or steam heating as a heat source, and discloses a turbulence self-cleaning reduced pressure pipeline exchange water heater which consists of a plurality of tap-water tensile heat tubes, a heat tube communicating part, heating tubes, an inner tube communicating part, a connecting part, a plurality of inner round arc end socket, a small round arc end socket and a relief valve, wherein the two ends of the plurality of tap-water tensile heat tubes, the heat tube communicating part, the inner tube communicating part and the connecting part are welded, serially connected and communicated into a rectangle, and a plurality of heating tubes placed in the middle are fixedly arranged in the tap-water tensile heat tubes and the plurality of heating tubes and the inner tube connecting part are welded, serially connected and communicated into a rectangle; the plurality of tap-water tensile heat tubes are formed by stretching from the external diameter to the inner diameter of the circumferences of tube bodies to form a plurality of elongated bosses and evenly distributing a plurality of sections on the inner-diameter circumferences of the tube bodies; and the plurality of the inner round arc end sockets and the two ends of each tap-water tensile heat tube are in close fit, are level with one another and are fixedly connected by virtue of welding or are fixedly connected by virtue of butt welding, thus the heat exchange effect of a heat exchange body is effectively increased.

Description

technical field [0001] The invention relates to a liquid heat exchanger, in particular to a household heating type water heater or steam heater as a heat source, which belongs to a water supply device. Background technique [0002] With the development of science and technology, people have higher and higher requirements for the heat transfer performance of heat exchangers. High-efficiency heat exchangers can not only enhance heat transfer and reduce energy consumption, but also reduce volume and maintenance costs, thereby reducing product costs. , so people have continuously improved the traditional heat exchanger. For example, strengthening the convective heat transfer of the heat exchange surface is an effective way to improve the heat transfer coefficient of the heat exchanger. The traditional tube-and-tube heat exchanger is affected by the characteristics of the smooth tube itself and Due to the limitation of processing methods, the heat transfer effect is affected to a...

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Problems solved by technology

[0002] With the development of science and technology, people have higher and higher requirements for the heat transfer performance of heat exchangers. High-efficiency heat exchangers can not only enhance heat transfer and reduce energy consumption, but also reduce volume and maintenance costs, thereby reducing product costs. , so people have continuously improved the traditional heat exchanger. For example, strengthening the convective heat transfer of the heat exchange surface is an effective way to improve the heat transfer coefficient of the heat exchanger. The traditional tube-and-tube heat exchanger is affected by the characteristics of the smooth tube itself and Due to the limitation of processing methods, the heat transfer effect is affected to a certain extent. Generally, only some measures to enhance heat transfer are adopted on the inner and outer surfaces of the heat transfer tube. Therefore, although the heat transfer coefficient of the heat exchanger has been improved to a certain extent, the magnitude is not large, and the heat transfer Tube wall thickness is thicker

The existing pipeline water heaters on the market are very popular. The disadvantages are: first, the suspended matter in the heat exchange pipeline and the impurities in the fluid adhere to the pipe wall after the user uses it for 2-3 heating periods, which is easy to form scale and cannot be cleaned and repaired. Second, due to the thermal expansion and cold contraction of the heat exchange tube itself, the stress of the heat exchanger increases correspondingly during the heat transfer process, and the joints are prone to leakage, and the leakage failure rate of the weld joints occurs frequently. The reason is that the replacement After heating, the cold water is exchanged into hot water, and expansion is formed without using hot water, and the internal pressure has no place to release water to force the unevenness of the weld point to leak, which brings inconvenience to users

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