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Solar heat pump hot-water system for automatically adjusting working medium charging amount and control method

A solar heat pump and hot water system technology, applied in the field of heat exchange, can solve problems such as hidden safety hazards, suboptimal charging of pipeline working fluid, and low use cost.

Active Publication Date: 2017-01-25
SHANDONG CHAOYUE DIYUAN THERMAL PUMP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are unfavorable factors when using traditional methods to obtain hot water. For example, direct heating with heating elements such as resistors not only has high cost of use, but also has potential safety hazards; solar water heaters have low cost of use, but are easily affected by environmental factors. It is not possible to obtain enough hot water during the day or at night; the cost of using the heat pump hot water system to obtain hot water is relatively low, and only the heat energy in the air can be used
Ordinary solar heat pump water heating systems combine the advantages of solar water heaters and heat pump water heating systems, but when working in two different modes, the amount of working fluid inside the pipeline is not optimal

Method used

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  • Solar heat pump hot-water system for automatically adjusting working medium charging amount and control method

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Experimental program
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Effect test

Embodiment 1

[0022] It specifically includes a heat pump unit, a solar energy unit, a circulating water unit and a control unit; the compressor 1, the condenser 15, the heat pump liquid reservoir 5, and the evaporator 2 in the heat pump unit are sequentially connected through pipelines to form the circulation pipe of the working medium in the heat pump unit Road; the inlet on the working medium side of the condenser 15 is connected to the outlet of the compressor with an electromagnetic three-way valve 16, the outlet on the working medium side of the condenser 15 is connected to the inlet of the electromagnetic valve 7, and the outlet of the electromagnetic valve 7 is connected to the liquid reservoir The electromagnetic three-way valve 6 is connected; the first port of the electromagnetic three-way valve 6 connected to the accumulator is connected with the inlet of the heat pump accumulator 5, and the pipeline connecting the accumulator 5 for the heat pump and the evaporator 2 is provided w...

Embodiment 2

[0027] A solar heat pump hot water system that can automatically adjust the charging amount of working fluid. During the process of making hot water, the same working fluid is always circulating inside the pipeline. In the system initialization stage, the control unit connects the pipes connecting the two liquid reservoirs, and under the action of pressure difference, the liquids in the heat pump liquid reservoir 5 and the solar energy liquid reservoir 9 will automatically reach a balance.

[0028] When the solar unit is working, the control unit turns on the compressor 1, and at the same time controls the electromagnetic three-way valve 16, the electromagnetic valve 7, and the electromagnetic three-way valve 6 connected to the liquid storage device at the outlet of the compressor, so that the exhaust port of the compressor 1 comes out The gaseous working medium enters the solar energy liquid storage tank 9 through the condenser 15 . When the pressure at the inlet and outlet o...

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Abstract

The invention relates to the technical field of heat exchange, in particular to a solar heat pump hot water system and a control method for automatically adjusting the charging amount of working fluid. It includes a heat pump unit, a solar unit, a circulating water unit and a control unit; the heat pump unit includes a compressor, a condenser, an electronic expansion valve, an evaporator, a heat pump liquid reservoir, an electromagnetic three-way valve, and an electromagnetic valve; the solar unit Including solar heat collector, solar liquid storage, working medium pump; circulating water unit includes water tank, water pump, heat storage tank; control unit includes microcomputer, temperature sensor, pressure sensor, liquid level sensor. When the present invention adopts the solar energy unit and the heat pump unit to produce hot water, the thermal energy and solar energy in the air can be fully utilized; A certain amount of working fluid is maintained, so as to ensure that the solar energy unit and the heat pump unit can maintain an optimal charging volume of working fluid during the working process.

Description

[0001] (1) Technical field [0002] The invention relates to the technical field of heat exchange, in particular to a solar heat pump hot water system and a control method for automatically adjusting the charging amount of working fluid. [0003] (2) Background technology [0004] There are unfavorable factors when using traditional methods to obtain hot water. For example, direct heating with heating elements such as resistors not only has high cost of use, but also has potential safety hazards; solar water heaters have low cost of use, but are easily affected by environmental factors. It is not possible to obtain enough hot water during the day or night; the cost of using the heat pump hot water system to obtain hot water is relatively low, and only the heat energy in the air can be used. Ordinary solar heat pump water heating systems combine the advantages of solar water heaters and heat pump water heating systems, but when working in two different modes, the amount of worki...

Claims

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Application Information

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IPC IPC(8): F24J2/00F24J2/40
CPCY02E10/40F24S50/00F24S20/40F24S50/40
Inventor 肖斌彭发展
Owner SHANDONG CHAOYUE DIYUAN THERMAL PUMP TECH CO LTD