A snake neck heat exchanger

Abstract

The invention discloses a snake neck heat exchanger, and belongs to the technical field of heat exchangers. The snake neck heat exchanger comprises a frame assembly and a hot water storage tank; one side of the frame assembly is fixedly connected with a bottom plate, and a sealing adhesive tape, a transparent cover plate, a pressing plate, a heat absorbing plate core and a heat insulation pad aresequentially placed between the frame assembly and the bottom plate; connecting fixed cylinders are fixedly connected to one pair of side walls of a part, a main snake neck pipe is connected into theheat absorbing plate core, and the two ends of the main snake neck pipe are located in the connecting fixed cylinders correspondingly; and one end of the main snake neck pipe is fixedly connected witha heat collector water inlet pipe, and the other end of the main snake neck pipe is fixedly connected with a heat collector water return pipe. The snake neck heat exchanger is applied to a flat platesolar heat collector, a main snake pipe and auxiliary snake pipe combination form is adopted, the solar energy utilization ratio can be increased significantly, water in a hot water pipe is not proneto becoming clod, low-temperature residual water in the hot water pipe can be reduced significantly, hot water can be quickly obtained by opening a water valve, high efficiency and energy saving areachieved, and environmental protection is facilitated.

Description

Technical field [0001] The invention relates to the technical field of heat exchangers, and more specifically, to a snake-neck heat exchanger. Background technique [0002] Snake tube heat exchanger is made of metal or non-metal tubes, bent into the required shape as needed, such as round, spiral and long serpentine tubes. It is one of the earliest heat exchange equipment, which has the advantages of simple structure and convenient operation. [0003] There are many practical application scenarios of the snake tube heat exchanger. For example, flat solar collectors often need to use a snake tube heat absorbing plate, which is a metal tube that is bent into a serpentine shape, and then welded with a flat plate to form heat absorption board. This type of structure is widely used abroad. The heat-absorbing plate material is generally copper, and the welding process can be high-frequency welding or ultrasonic welding. The working principle of the heat collector is that sunlight shi...

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Problems solved by technology

[0004] In the Chinese invention patent whose publication number is CN103925704B, an external solar water heater is disclosed on the balcony. The heat collector, the hot water storage tank and the auxiliary electric heating are designed in one, and the heat exchange coil built in the hot water tank is used for heat exchange and heating. To a certain extent, it solves the problem of separation and space occupation of the heat collector and the hot water storage tank in the prior art, but the integrated design will inevitably lead to limited water storage in the hot water storage tank, making it difficult to meet the water demand during peak periods, and the integrated design It is necessary to consider the light received by the heat collector, which will lead to limited installation space and increased installation difficulty; and the heat exchange coil is located in the hot water storage tank, only when the indoor hot water valve is opened, the heat exchange coil can be used in real time Function, when the indoor hot water valve is closed, the tap water stops passing through the heat exchange coil, there will be more residual water in the hot water pipe, and it takes a long time to discharge the hot water when the water valve is opened, which wastes resources and is inconvenient to use

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