Heat pump water heater with multi-mode heating

A technology for heat pump water heaters and water heaters, applied in the field of heat pumps, can solve problems such as poor operation stability, low heat production efficiency, and limited working range, and achieve the effects of reducing heat exchange losses, reducing temperature stratification, and saving energy waste

Active Publication Date: 2021-06-18
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of low heat production efficiency, poor operation stability and limited working range of existing water heaters, the present invention provides a multi-mode heating system with high heat production efficiency, good operation stability and wide working range. heat pump water heater

Method used

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  • Heat pump water heater with multi-mode heating
  • Heat pump water heater with multi-mode heating
  • Heat pump water heater with multi-mode heating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] refer to figure 1 , a heat pump water heater with multi-mode heating, the water heater is a multi-mode coupled heating stratified water outlet heat pump water heater, including a heat pump host 1, a condenser 2, a water pump 3, a first shut-off valve 4, a second shut-off valve 5, a second Three shut-off valves 6, the fourth shut-off valve 7, the fifth shut-off valve 8, the sixth shut-off valve 9, the seventh shut-off valve 10, the eighth shut-off valve 11, the flow regulating valve 12, the water tank 13, the first water mixing valve 14 ( with flow sensor), second mixing valve 15 (with flow sensor), third mixing valve 16 (with flow sensor), ninth stop valve 17, control system 18, first temperature sensor 19, second temperature sensor 20 and the third temperature sensor 21.

[0028] The condenser 2 has four inlets and outlets, the first inlet is connected to the outlet of the heat pump host 1 through a pipeline, the second inlet is connected to the outlet of the water pu...

Embodiment 2

[0034] refer to figure 2 , a heat pump water heater with multi-mode heating, the water heater is a multi-tank heat pump water heater with multi-mode coupled heating, comprising a heat pump host 1, a condenser 2, a water pump 3, a first shut-off valve 4, a second shut-off valve 5, a third Stop valve 6, fourth stop valve 7, fifth stop valve 8, sixth stop valve 9, seventh stop valve 10, eighth stop valve 11, flow regulating valve 12, first water tank 13, second water tank 14, first Three water tanks 15, the first water mixing valve 16 (with flow sensor), the second water mixing valve 17 (with flow sensor), the third water mixing valve 18 (with flow sensor), the ninth shut-off valve 19, the control system 20, A first temperature sensor 21 , a second temperature sensor 22 and a third temperature sensor 23 .

[0035] The condenser 2 has four inlets and outlets, the first inlet is connected to the outlet of the heat pump host 1 through a pipeline, the second inlet is connected to the...

Embodiment 3

[0041] refer to image 3 , a heat pump water heater with multi-mode heating, the water heater is a low-temperature heat pump water heater with cascade heating, multi-mode coupling and stratified water outlet, including an evaporator 1, a first compressor 2, a first shut-off valve 3, a second shut-off valve 4, Intermediate heat exchanger 5, first expansion valve 6, second compressor 7, first condenser 8, second condenser 9, second expansion valve 10, water pump 11, third stop valve 12, fourth stop valve 13 , the fifth shut-off valve 14, the sixth shut-off valve 15, the seventh shut-off valve 16, the eighth shut-off valve 17, the ninth shut-off valve 18, the tenth shut-off valve 19, the flow regulating valve 20, the water tank 21, the first mixing valve 22 (with flow sensor), the second mixing valve 23 (with flow sensor), the third mixing valve 24 (with flow sensor), the eleventh cut-off valve 25, the control system 26, the first temperature sensor 27, the second temperature se...

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Abstract

A heat pump water heater with multi-mode heating, including a heat pump main unit, a condenser, a water pump, a first shut-off valve, a second shut-off valve, a third shut-off valve, a fourth shut-off valve, a fifth shut-off valve, a sixth shut-off valve, a seventh shut-off valve The shut-off valve, the eighth shut-off valve, the flow regulating valve, the water tank, the first mixing valve, the second mixing valve, the third mixing valve, and the ninth shut-off valve can control the heat pump with multiple different settings through multiple mode switching. The temperature of the water tank is coupled and heated, and the way of separately heating the water tanks with different set temperatures in different coupling modes is realized by switching different cut-off valves. And a cascade heating multi-mode coupled low-temperature heat pump water heater is provided. The invention has high heat production efficiency, good operation stability and wide working range.

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. 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 Thereby, large entropy production is generated, energy utilization rate is reduced, and the single temperature of hot water cannot quickly meet the needs of users for different water temperatures; the existing circulation heat pump water heater water tank has stratification of cold and hot water,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H4/02F24H9/20F24H9/00
Inventor 徐英杰蒋宁李恩腾许亮峰
Owner ZHEJIANG UNIV OF TECH
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