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Heat-pump hot water supply apparatus

一种供热水、热泵的技术，应用在热泵供热水机领域，能够解决加热上升时间长运转上升特性、没有解决瞬间型热泵供热水机等问题，达到改善启动特性、缩短加热延迟时间、减少滞留量的效果

Inactive Publication Date: 2006-09-27
HITACHI APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the instant type heat pump water heater disclosed in Patent Document 1, the problem of the operation rise characteristic that the heat rise time is long immediately after the start of operation of the instant type heat pump water heater is not solved.

Method used

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  • Heat-pump hot water supply apparatus

Examples

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Embodiment Construction

[0042] figure 1 Among them, a heat pump water heater according to an embodiment of the present invention has a heat pump refrigerant circuit 30 , a water supply circuit 40 , and an operation control unit 50 .

[0043] The heat pump refrigerant circuit 30 and the hot water supply circuit 40 can be housed integrally in the same casing. In addition, the operation control unit 50 is connected to a kitchen remote control 51 and a bath remote control 52 provided separately.

[0044] The heat pump refrigerant circuit 30 is a double-circulation mode in which there are two parts for each, and the compressors 1a and 1b are connected to the compressors 1a and 1b in sequence through the refrigerant pipelines respectively; 3a, 3b; refrigerant regulating valves 6a, 6b; evaporators 7a, 7b and backflow prevention valves 8a, 8b.

[0045] As the refrigerant enclosed in the respective cycles, chlorine-free hydrogen fluoride or a natural refrigerant such as carbon dioxide is preferably used.

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Abstract

A heat-pump hot water supply apparatus, for dissolving problems of delaying in heating rise-up time when re-starting, and ill influences upon starting characteristics, due to liquid refrigerant residing in an evaporator when the operation is stepped, within a heat-pump circuit thereof, comprises a heat-pump refrigerant circuit, in which a compressor, a water / refrigerant heat exchanger, a refrigerant adjusting valve, and an evaporator, in series, through refrigerant pipes, a direct hot-water supply circuit, into which is supplied hot water heated, obtained by heating water supplied from an outside via a water pipe by means the water / refrigerant heat exchanger, and a compressor operation controller means for stopping the compressor and also closing the refrigerant adjusting valve when the compressor stops the operation thereof, and for re-starting the compressor after opening the refrigerant adjusting valve when the compressor starts the operation, again, wherein the refrigerant within the evaporator is collected to the compressor side when the operation is stopped, and after stopping, front and back of the evaporator is brought into a sealed condition by means of a refrigerant adjusting valve and a back-flow preventing valve, thereby preventing the refrigerant from residing within the evaporator.

Description

technical field [0001] The invention relates to a heat pump water supply machine. Background technique [0002] The current heat pump water supply machine is the same as the electric water heater. It is generally equipped with a large-capacity hot water storage tank of 300L to 500L. It uses cheap discounted electricity at night to boil water in the heat pump circuit and store it in the hot water storage tank. The hot water storage mode of using the above-mentioned stored hot water during the day. [0003] In recent years, an instant-boiling type heat pump water heater has been proposed that operates a heat pump each time hot water is supplied to directly heat and supply hot water. [0004] Such an instantaneous type heat pump water heater is disclosed in Japanese Unexamined Patent Application Publication No. 2003-240344 (Patent Document 1), which integrates the water heater main body and the heat pump main body without using a hot water storage tank. Achieve weight reducti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H4/02
CPCF25B2500/26F24D19/1054F24H15/231F24H15/385F24H15/242F24H15/38F24H15/45F24H15/31F24D17/02F24H1/48F24H4/04F24H9/20F25B30/02Y02B30/12
Inventor 店网太一权守仁彦远藤和广高木纯一福岛功一
Owner HITACHI APPLIANCES INC
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