Split-type solar water heater with U-tube heat collector and build-in enamel coil heat exchanger

Abstract

The invention relates to a split-type solar water heater with a U-tube heat collector and a build-in enamel coil heat exchanger. The split-type solar water heater with the U-tube heat collector and the build-in enamel coil heat exchanger comprises a water tank and the heat collector, a liner is mounted inside the water tank, the enamel coil heat exchanger is mounted inside the liner, the outside of the enamel coil heat exchanger is provided with a medium circulating inlet and a medium circulating outlet, both the medium circulating inlet and the medium circulating outlet penetrate the outer wall of the water tank and are connected with a medium circulating pipeline, the liner is provided with a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe penetrate the water tank and are connected with an external pipeline. Vacuum tubes are mounted inside the frame of the heat collector and connected with the frame of the heat collector through seal rings, a stainless steel U-tube is inserted inside every vacuum tube, the upper end of the U-tube is a heat pipe section, the lower end of the U-tube is a cold tube section, both ends of the U-tube are connected with a medium heat collection inlet and a medium heat collection outlet respectively, the medium heat collection inlet and the medium heat collection outlet are connected with the medium circulating outlet and the medium circulating inlet of the water tank respectively to form a circulating loop, and the medium circulating pipeline is provided with a circulating pump station. According to the split-type solar water heater with the U-tube heat collector and the build-in enamel coil heat exchanger, the U-tubes are arranged additionally and filled with mediums and no water flows inside the vacuum tubes, so that no scaling occurs and the heat collecting efficiency cannot be affected even in long-term use.

Description

technical field [0001] The invention relates to the field of solar water heaters, in particular to a split solar energy with a U-shaped tube heat collector and a built-in enamel coil heat exchanger. Background technique [0002] At present, most of the water tanks of split solar water heaters adopt a pressure-bearing structure, and the heat exchange structure is divided into built-in heat exchange and external heat exchange. Most of the built-in heat exchangers are welded structures. Although the thermal efficiency is improved, the welds are easy to corrode due to high pressure and high heat, causing the medium to leak out and pollute the water tank; the external heat exchanger has a large heat transfer area, and the heat exchanger does not bear external pressure. , but the interlayer is difficult to enamel, making it difficult to guarantee the anti-corrosion performance, and eventually the heat exchanger is damaged, resulting in the scrapping of the entire water tank. At p...

AI Technical Summary

Problems solved by technology

[0005] The heat exchanger of the split-type solar water tank of the present invention is made of enamelled steel pipe after rolling, which solves the problems of easy corrosion of the built-in heat exchanger due to welding pressure, excessive corrosion of welding points of the stainless steel water tank, and excessive corrosion of the interlayer of the external heat exchanger, etc. At the same time, the coil heat exchanger has the advantages of less space and a large heat transfer area, which greatly improves the heat transfer efficiency in the water tank

Images