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Heat pump hydronic heater

A hot water heating and heat pump technology, which is applied in hot water central heating systems, heating methods, household heating, etc., can solve the problems of misdetection of refrigerants, uncertainties, and difficult temperature ranges, and achieve the effect of improving usability

Inactive Publication Date: 2013-09-18
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the separate type heat pump type hot water heater in which the heat exchange unit accommodating the water refrigerant heat exchanger 3 and the like and the heat pump unit accommodating the compressor 1, the outdoor heat exchanger 5 and the like are provided indoors and outdoors, respectively, The length of the piping connecting the heat exchange unit and the heat pump unit is not constant depending on the installation conditions, so it is difficult to accurately determine the temperature range during the operation of the evaporator, which may cause false detection of refrigerant leakage

Method used

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Embodiment Construction

[0028] The heat pump type hot water heating device of the first invention is characterized in that it has a refrigeration cycle in which a compressor, a water refrigerant heat exchanger, a decompression device, and an outdoor heat exchanger are connected by refrigerant piping, and the compressor compresses Refrigerant, the water-refrigerant heat exchanger performs heat exchange between the refrigerant and water, the decompression device decompresses the refrigerant, the outdoor heat exchanger performs heat exchange between the refrigerant and air, and the heat pump heat exchanger The water heating device includes: a discharge pressure detection unit that detects a pressure of the refrigerant discharged from the compressor; a discharge superheat detection unit that detects a superheat degree of the refrigerant discharged from the compressor; and A control device that stops the operation of the compressor when the discharge pressure detected by the discharge pressure detection un...

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Abstract

In a heat pump hydronic heater of the present invention, the control device (11a) stops operation of the compressor (1) if the discharge pressure detected by the discharge pressure detecting means (1b) is lower than a first set pressure and a discharge superheat degree detected by the discharge superheat degree detecting means is equal to or higher than a predetermined value when predetermined time is elapsed after the compressor (1) is started, or if the discharge pressure detected by the discharge pressure detecting means (1b) is lower than a second set pressure which is set lower than the first set pressure. Therefore, it is possible to enhance usability without erroneously detecting leakage of a refrigerant.

Description

technical field [0001] The invention relates to a heat pump type hot water heating device. Background technique [0002] At present, heating equipment using burning fuels such as oil and natural gas as a heat source is widely used, but in recent years, heating devices utilizing heat pump technology have proliferated. [0003] image 3 It is a structural diagram of an existing heat pump type hot water heating device capable of cooling and heating. like image 3 As shown, the existing heat pump hot water heating device has a refrigerating cycle, and the refrigerating cycle connects a compressor 1, a four-way valve 2, a water refrigerant heat exchanger 3, a decompression device 4, and an outdoor heat exchanger through a refrigerant piping 7. 5 are sequentially connected to form a ring. The outdoor heat exchanger 5 includes a blower 6 for promoting heat exchange between air and refrigerant. [0004] Furthermore, a water pump 8 for sending cold water or hot water generated by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D3/18F24D19/10
CPCF24D19/1039F24D19/1072F25B49/005F25B2700/1931F24H15/38
Inventor 荒岛博西村秀司
Owner PANASONIC CORP
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