Solar heat pump water heater for commercial use

Abstract

The invention provides a solar heat pump water heater for commercial use, comprising a heat pump unit, wherein a second heat interchanger and a first heat interchanger are installed on a pipeline of the heat pump unit, the second heat interchanger is connected with one end of a second water recharge pipe, one end of the second water recharge pipe is connected with a water tank, a first electric valve and an eleventh temperature sensor are installed on the second water recharge pipe, the first heat interchanger is connected with one end of a communicating pipe, the other end of the communicating pipe is connected with the second heat interchanger, and a second electromagnetic valve is installed on the communicating pipe; and the first heat interchanger is respectively connected with one endof a water inlet pipe and one end of a water outlet pipe of the water tank, one end of the water inlet pipe and one end of the water outlet pipe are respectively connected with the water tank, a oneway valve and a first water pump are installed on the water outlet pipe of the water tank, a first water flow switch, a ninth temperature sensor and a second electric valve are installed on the waterinlet pipe of the water tank, and a heat exchange pipe coil is installed in the water tank and is connected with a solar heat collector by solar liquid inlet-outlet pipes. By utilizing the heat pump and a solar device, heat is directly supplied to the water tank by the water heater, thereby furthest giving play to the heating function of the heat pump and the solar energy.

Description

technical field [0001] The invention relates to a heat pump water heater, specifically a commercial solar heat pump water heater. Background technique [0002] Existing various commercial solar heat pump water heaters, one is to use solar energy to heat the heat transfer medium outside the heat pump evaporator, hoping to improve the heating efficiency of the heat pump, and the other is to use the heat pump to heat the water in the solar water tank , in order to improve the quality of hot water produced by solar energy, but its actual working effect is not ideal; and all kinds of existing solar heat pump water heaters have the defect that the heat of the heat pump system cannot be fully utilized. The refrigerant still has a large amount of heat energy, and this part of the heat cannot be used at present, resulting in energy waste. Contents of the invention [0003] The purpose of the present invention is to provide a commercial solar heat pump water heater, which uses heat...

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Problems solved by technology

[0002] There are various types of commercial solar heat pump water heaters. One is to use solar energy to heat the heat transfer medium outside the heat pump evaporator, hoping to improve the heating efficiency of the heat pump. One is to use the heat pump to heat the water in the solar water tank, so as to improve the quality of the hot water produced by the solar energy, but its actual working effect is not ideal; The defect that the heat cannot be fully utilized, the heat pump system flows through the water tank after the refrigerant still has a lot of heat energy, and this part of the heat cannot be used at present, resulting in energy waste

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