Heat pump hot water heating device
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 refrigerant, uncertainty, and difficult temperature range, and achieve the effect of improving usability
Inactive Publication Date: 2017-05-31
PANASONIC CORP
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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
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[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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The heat pump hot water heating device of the present invention is characterized in that the control device (11a) detects that the discharge pressure detected by the discharge pressure detection unit (1b) is lower than the first setting after a predetermined time has elapsed since the compressor (1) was started. pressure, and the discharge superheat detected by the discharge superheat detection unit is above a specified value, or when the discharge pressure detected by the discharge pressure detection unit is set lower than the first set pressure When the second set pressure is lower, the operation of the compressor (1) is stopped. Therefore, it is possible to improve usability without erroneous detection of refrigerant leakage.
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. Such as 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 ...
Claims
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IPC IPC(8): F24D3/18F24D19/10
CPCF24D19/1039F24D19/1072F25B49/005F25B2700/1931F24H15/38
Inventor 荒岛博西村秀司
Owner PANASONIC CORP