Cascade heating multi-mode coupled multi-water-tank dual compression heat pump water heater

A heat pump water heater and cascade heating technology, which is applied to irreversible cycle compressors, fluid heaters, compressors, etc., can solve the problems of low heat production efficiency of water heaters, so as to improve the utilization rate of hot water, improve efficiency, and improve heat exchange efficiency. Effect

Inactive Publication Date: 2018-08-03
ZHEJIANG UNIV OF TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the low heat production efficiency of existing water heaters, the present invention provides a multi-tank dual-compression heat pump water heater with cascade heating and multi-mode coupling with high heat production efficiency.

Method used

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  • Cascade heating multi-mode coupled multi-water-tank dual compression heat pump water heater

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] refer to figure 1 , a multi-tank dual-compression heat pump water heater with cascade heating and multi-mode coupling, including an evaporator 1, a first compressor 2, a first shut-off valve 3, a second shut-off valve 4, a second compressor 5, and a first expansion valve 6 , second expansion valve 7, regenerator 8, third expansion valve 9, second condenser 10, first condenser 11, water pump 12, third shut-off valve 13, fourth shut-off valve 14, fifth shut-off valve 15 , the sixth shut-off valve 16, the seventh shut-off valve 17, the eighth shut-off valve 18, the ninth shut-off valve 19, the tenth shut-off valve 20, the flow regulating valve 21, the first water tank 22, the second water tank 23, the third water tank 24 , the first mixing valve 25 (with flow sensor), the second mixing valve 26 (with flow sensor), the third mixing valve 27 (with flow sensor), the ...

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Abstract

The invention discloses a cascade heating multi-mode coupled multi-water-tank dual compression heat pump water heater. The water heater comprises an evaporator, a first compressor, a first stop valve,a second stop valve, a second compressor, a first expansion valve, a second expansion valve, a heat regenerator, a third expansion valve, a second condenser, a first condenser, a water pump, a thirdstop valve, a fourth stop valve, a fifth stop valve, a sixth stop valve, a seventh stop valve, an eighth stop valve, a ninth stop valve, a tenth stop valve, a flow adjusting valve, a first water tank,a second water tank, a third water tank, a first water mixing valve, a second water mixing valve, a third water mixing valve and an eleventh stop valve. The two-stage compression two-stage throttlingtype heat pump circulation is adopted for carrying out cascade heating on the multiple water tanks with different set temperatures through multi-mode switching, the water tanks with different set temperatures are separately heated by switching the different stop valves in different coupled modes, and water is taken out from the water tanks with different set temperatures. The cascade heating multi-mode coupled multi-water-tank dual compression heat pump water heater is high in heat production efficiency.

Description

technical field [0001] The invention belongs to the field of heat pumps and relates to a heat pump water heater. Background technique [0002] With the gradual recognition of the market and the support of national policies, air source heat pump water heaters have been widely promoted, and users pay special attention to water comfort and energy saving. However, the heat pump water heater still needs to consume a large amount of electric energy, and the efficiency is not ideal enough, so improving its electric efficiency is an important improvement direction. Existing heat pump water heaters can only heat water to a very high temperature and store it in the water tank. When users use hot water at a lower temperature, they can only use it after mixing hot water with high temperature from the water tank and mixing it with cold water. This process wastes the available energy in the hot water As a result, large entropy production is generated, energy utilization is reduced, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H4/02F24H9/20F25B1/10F25B41/04F25B41/06F25B41/20F25B41/24F25B41/31
CPCF24H4/02F24H9/2007F25B1/10F25B41/20F25B41/31
Inventor 徐英杰李恩腾蒋宁
Owner ZHEJIANG UNIV OF TECH
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