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Heat pump type hot water supply system with cooling function

A hot water supply and heat pump technology, applied in the field of heat pump hot water supply system, can solve the problems of high equipment cost and operating cost, and achieve the effect of realizing the cooling function

Inactive Publication Date: 2004-08-25
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to the above-mentioned conventional technology, separate refrigeration cycle systems are required for both the hot water supply function and the cooling or freezing / refrigeration function, which brings about high equipment costs and high operating costs

Method used

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  • Heat pump type hot water supply system with cooling function
  • Heat pump type hot water supply system with cooling function
  • Heat pump type hot water supply system with cooling function

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0040] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. figure 1 It is a schematic configuration diagram of a heat pump hot water supply system with cooling function according to the first embodiment of the present invention, wherein water is heated to supply hot water while brine is cooled at the same time. In the heat pump type hot water supply system with cooling function according to the current embodiment, using a supercritical heat pump cycle, water is heated to a certain high temperature (about 90°C in the current embodiment) while being cooled using brine as described below The heat exchanger 9, brine such as an antifreeze solution or the like as a heat exchange medium, is cooled to a certain low temperature (about -10°C in the present embodiment). In this way, brine is used to cool a certain space or end 11, such as a refrigerator, freezer or wine cellar.

[0041] A supercritical heat pump cycle (hereinafter referr...

no. 2 example

[0064] figure 2It is a schematic structural diagram of a heat pump hot water supply system with cooling function according to the second embodiment of the present invention. The difference between the present embodiment and the above-mentioned first embodiment is that: according to the present embodiment, the refrigerant circuit R includes: a refrigerant heat radiation heat exchanger 13 having a high-pressure refrigerant passage 13a (in which flows through water High-pressure refrigerant of heat exchanger 2) and low-pressure refrigerant passage 13b (in which low-pressure refrigerant flowing through air heat exchanger 5 or brine cooling heat exchanger 9 flows). By heating the low-temperature refrigerant flowing through the low-pressure refrigerant passage 13b, the heat of the high-pressure refrigerant flowing in the high-pressure refrigerant passage 13a is radiated.

[0065] Unlike conventional systems that use internal heat exchangers to increase compressor extraction pressu...

no. 3 example

[0068] image 3 It is a schematic structural diagram of a heat pump hot water supply system with cooling function according to the third embodiment of the present invention. The present embodiment differs from the second embodiment described above in that, according to the present embodiment, the first and second expansion valves 4a, 4b are replaced with the ejector 14 as the decompression expansion means. refer to Figure 4 The structure of the injector 14 constituting the characteristic of the present invention is explained.

[0069] The ejector 14 includes: a nozzle 14a, which is used to convert the pressure energy (pressure head) of the high-pressure refrigerant compressed by the refrigerant compressor 1 and flowing through the compressed water heat exchanger 2 into velocity energy (velocity head), Thereby, the refrigerant is decompressed and expanded; an extraction part 14b: utilizes the high-speed refrigerant flow ejected from the nozzle 14a to extract the evaporated w...

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Abstract

This heat pump type hot water supply apparatus with a cooling function is provided with a second refrigerant circuit R2 branched downstream of a high pressure refrigerant passage 2a to pass through a second expansion valve 4b and a low pressure refrigerant passage 9a of a brine cooling heat exchanger 9 and to join upstream of a refrigerant compressor 1 to be in parallel with a first refrigerant circuit R1, and a cold brine circuit B1 annularly connecting a brine passage 9b of the brine cooling heat exchanger 9, a cold brine circulating pump 8 and a terminal heat exchanger 10. A refrigerant is allowed to flow through the low pressure refrigerant passage 9a, and the cold brine circulating pump 8 is operated to exchange heat between the refrigerant of low temperature and low pressure flowing through the low pressure refrigerant passage 9a, and brine flowing through the brine passage 9b to cool the brine. Hot water supply and cooling can thereby be performed by one simple refrigerating cycle apparatus with a heat source integrated. Moreover, since waste cold heat is used, energy saving can be attained, and an apparatus cost and a running cost can be suppressed low.

Description

technical field [0001] The invention relates to a heat pump type hot water supply system which simultaneously has the functions of hot water supply and cooling, freezing, refrigerating and cold insulation. Background technique [0002] In the prior art, the waste heat of the heat pump hot water supply system is discharged into the air without being reused. On the other hand, conventional cooling or freezing / refrigerating systems are often equipped with a dedicated cooling / refrigerating unit. [0003] According to the above-mentioned conventional technology, separate refrigeration cycle systems are required for both the hot water supply function and the cooling or freezing / refrigerating function, thereby causing problems of high equipment cost and operation cost. Contents of the invention [0004] Therefore, an object of the present invention is to overcome the above-mentioned problems of the prior art, and provide a heat pump hot water supply system with cooling function,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H1/00F25B1/00F25B5/00F25B5/02F25B9/00F25B29/00F25B30/02F25B41/00F25D17/02
CPCF25B5/02F25B29/003F25B9/008F25D17/02F25B41/00F25B2341/0013F25B2341/0012F25B2339/047F25B2309/061
Inventor 村松徹榊原久介
Owner DENSO CORP
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