Split-type solar water heating system with built-in enamel coil heat exchanger

Abstract

The invention relates to a split-type solar water heating system with a built-in enamel coil heat exchanger, which comprises a water tank and a heat collector, and is characterized in that an inner tank is mounted in the water tank; the enamel coil heat exchanger is arranged in the inner tank; a medium circulation inlet and a medium circulation outlet are respectively formed in the outer end of the enamel coil heat exchanger, and both pass through the outer wall of the water tank to be connected with a medium circulation pipeline; a water inlet pipe and a water outlet pipe on the inner tank pass through the water tank to be communicated with the air; a heat collection cooling pipe and a heat collection pipe are mounted in the heat collector; the heat collection cooling pipe is connected with the tail of the heat collection pipe; a medium heat collection outlet and a medium heat collection inlet are respectively formed in the end part of the heat collection cooling pipe and the end part of the heat collection pipe; a vacuum pipe is communicated with the heat collection pipe through a seal ring; a glass heat absorption pipe is fixed in the vacuum pipe through metal supporting; and a circulating pump station is arranged on the medium circulation pipeline. The system has the advantages that the heat exchange area is increased, the medium circulation speed is increased, and the heat collection efficiency of the water heater is improved.

Description

technical field [0001] The invention relates to the field of solar water heaters, in particular to a split solar water heating system with a built-in enamel coil heat exchanger. Background technique [0002] At present, split solar water heaters all adopt a pressure-bearing structure, and the heat exchange structure is divided into built-in heat exchange and external heat exchange. The built-in heat exchanger is a stainless steel heat exchanger with high heat exchange efficiency, but it is usually made of stainless steel welding and has corrosion problems, which greatly reduces the service life of the water tank, and eventually the heat exchanger is damaged, resulting in the scrapping of the entire water tank; external heat exchange The water tank has a large heat exchange area, and the heat exchanger does not bear external pressure, but the heat exchange medium will also cause corrosion to the interlayer heat exchanger formed on the outside of the water tank liner and the i...

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Problems solved by technology

[0005] The present invention adopts the above-mentioned structure, and the enamel coil heat exchanger is made of enamelled after the steel pipe is rolled, which solves the problems that the built-in heat exchanger is easily corroded due to welding and pressure, the welding point of the stainless steel water tank is corroded too fast, and the interlayer of the external heat exchanger is corroded too much. At the same time, the coil heat exchanger has the advantages of less space and a large heat exchange area, which greatly improves the heat exchange efficiency in the water tank; the vacuum tube is equipped with a medium and the built-in glass heat absorption tube can fully absorb the heat of the vacuum tube, And the heat collecting cold pipe is connected to the end of the heat collecting pipe, which greatly increases the temperature difference of the circulating medium, accelerates the circulation speed of the medium, effectively transfers the heat of the heat collector to the water tank, and greatly improves the heat collecting efficiency of the water heater

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