IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0358277
(2003-02-05)
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우선권정보 |
JP-0077458 (2002-03-20) |
발명자
/ 주소 |
- Saitoh, Kenichi
- Gommori, Masahiko
- Kogure, Hiroshi
- Ashida, Haruko
- Ozawa, Takeo
- Okamura, Tetsunobu
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출원인 / 주소 |
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대리인 / 주소 |
Antonelli, Terry, Stout &
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인용정보 |
피인용 횟수 :
17 인용 특허 :
3 |
초록
▼
The object of the present invention is to provide a compact lightweight heat pump hot-water supply system. The hot-water supply system heats water through heat exchange between high-temperature refrigerant of a heat pump circuit and water of a water circulating circuit. The system is an instantaneou
The object of the present invention is to provide a compact lightweight heat pump hot-water supply system. The hot-water supply system heats water through heat exchange between high-temperature refrigerant of a heat pump circuit and water of a water circulating circuit. The system is an instantaneous water heater unit for instantaneously heating, at a water heat exchanger, water supplied through a water supply pipe and supplying hot water to a using end unit. In this system, therefore, large-capacity hot-water storage tank in conventional systems is no longer needed. Sufficient heat of condensation to heat water can not be produced, because pressure conditions of the heat pump circuit is not stabilized just after the start of operation. Therefore, during a short period of rising time, hot water stored in a hot-water supply tank and water from the water heat exchanger are mixed and the mixture is supplied to keep the hot water at a preset temperature. It is, therefore, possible to downsize the hot-water supply tank.
대표청구항
▼
1. A heat pump hot-water supply system, comprising:a compressor, a first heat exchanger for heat-exchange between a refrigerant discharged from the compressor and water, a pressure reducing unit for reducing the pressure of the refrigerant from the first heat exchanger, a second heat exchanger locat
1. A heat pump hot-water supply system, comprising:a compressor, a first heat exchanger for heat-exchange between a refrigerant discharged from the compressor and water, a pressure reducing unit for reducing the pressure of the refrigerant from the first heat exchanger, a second heat exchanger located between the pressure reducing unit and the compressor, a hot-water supply tank for holding water heated by the first heat exchanger, and a water circulating route followed by water, which is supplied from the hot-water supply tank, back to the hot-water supply tank via the first heat exchanger; the heat pump hot-water supply system mixing hot water supplied from the hot-water supply tank with water, which is supplied from a water supply pipe and heated by the first heat exchanger according to a heating condition of the first heat exchanger for heating water, and supplying the mixed water to a using end unit. 2. A heat pump hot-water supply system, comprising:a compressor, a first heat exchanger for heat-exchange between a refrigerant discharged from the compressor and water, a pressure reducing unit for reducing the pressure of the refrigerant from the first heat exchanger, a second heat exchanger located between the pressure reducing unit and the compressor, a hot-water supply tank for holding water heated by the first heat exchanger, and a water circulating route followed by water, which is kept in the hot-water supply tank, back to the hot-water supply tank via the first heat exchanger; the heat pump hot-water supply system having a mode for mixing water supplied from a water supply pipe to the first heat exchanger and heated by the first heat exchanger supplied with high temperature refrigerant from the compressor based on the start of use of hot water from a using end unit with hot water supplied from the hot-water supply tank based on the start of use of hot water at the using end unit, and supplying the mixture to the using end unit. 3. A heat pump hot-water supply system, comprising:a compressor, a first heat exchanger for heat-exchange between a refrigerant discharged from the compressor and water, a pressure reducing unit for reducing the pressure of the refrigerant from the first heat exchanger, a second heat exchanger located between the pressure reducing unit and the compressor, a hot-water supply tank for holding water heated by the first heat exchanger, and a water circulating route followed by water, which is kept in the hot-water supply tank, back to the hot-water supply tank via the first heat exchanger; the heat pump hot-water supply system having an operation mode for mixing water supplied from a water supply pipe to the first heat exchanger and heated by the first heat exchanger supplied with high temperature refrigerant from the compressor with water supplied through the water supply pipe, and supplying the mixture to a using end unit. 4. A heat pump hot-water supply system, comprising:a compressor, a first heat exchanger for heat-exchange between a refrigerant discharged from the compressor and water, a pressure reducing unit for reducing the pressure of the refrigerant from the first heat exchanger, a second heat exchanger located between the pressure reducing unit and the compressor, a hot-water supply tank for holding water heated by the first heat exchanger, and a water circulating route followed by water, which is kept in the hot-water supply tank, back to the hot-water supply tank via the first heat exchanger; the heat pump hot-water supply system having a mode for mixing water supplied through a water supply pipe and heated by the first heat exchanger supplied with high temperature refrigerant from the compressor based on start of use of hot water at a using end unit with hot water supplied from the hot-water supply tank based on start of use of hot water at the using end unit, and further mixing with water supplied from the water supply pipe, and then supplying the mixture the a using end unit. 5. A heat pump hot-water supply system, comprising:a compressor, a first heat exchanger for heat-exchange between a refrigerant discharged from the compressor and water, a pressure reducing unit for reducing the pressure of the refrigerant from the first heat exchanger, a second heat exchanger located between the pressure reducing unit and the compressor, a hot-water supply tank for holding water heated by the first heat exchanger, and a water circulating route followed by water, which is kept in the hot-water supply tank, back to the hot-water supply tank via the first heat exchanger; the hot-water supply tank having a capacity of 60 liters to 100 liters; the heat pump hot-water supply system mixing hot water supplied from the hot-water supply tank with water heated by the first heat exchanger according to the heating condition of the first heat exchanger for heating water, which is supplied from a water supply pipe, and supplying the mixed hot water to a using end unit. 6. A heat pump hot-water supply system, comprising:a compressor, a first heat exchanger for heat-exchange between a refrigerant discharged from the compressor and water, a pressure reducing unit for reducing the pressure of the refrigerant from the first heat exchanger, a second heat exchanger located between the pressure reducing unit and the compressor, a hot-water supply tank for holding water heated by the first heat exchanger, and a water circulating route followed by water, which is kept in the hot-water supply tank, back to the hot-water supply tank via the first heat exchanger; the hot-water supply tank having a capacity of 60 liters to 100 liters; and the compressor, the first heat exchanger, the second heat exchanger, the pressure reducing unit, and the hot-water supply tank being housed in one casing. 7. A heat pump hot-water supply system, comprising:a compressor, a first heat exchanger for heat-exchange between a refrigerant discharged from the compressor and water, a pressure reducing unit for reducing the pressure of the refrigerant from the first heat exchanger, a second heat exchanger located between the pressure reducing unit and the compressor, a hot-water supply tank for holding water heated by the first heat exchanger, and a water circulating route followed by water, which is kept in the hot-water supply tank, back to the hot-water supply tank via the first heat exchanger; the capacity of the hot-water supply tank being 60 liters to 100 liters; the compressor, the first heat exchanger, the second heat exchanger, the pressure reducing unit, and the hot-water supply tank being housed in one casing; and the hot-water tank being mounted in the upper part of the casing. 8. A heat pump hot-water supply system, comprising:a compressor, a first heat exchanger for heat-exchange between a refrigerant discharged from the compressor and water, a pressure reducing unit for reducing the pressure of the refrigerant from the first heat exchanger, a second heat exchanger located between the pressure reducing unit and the compressor, a hot-water supply tank for holding water heated by the first heat exchanger, and a water circulating route followed by water, which is stored in the hot-water supply tank, from the hot-water supply tank, through the first heat exchanger, and back to the hot-water supply tank; a water supply pipe; a hot water circuit followed by water supplied from the water supply pipe, through the first heat exchanger in which the water is heated, and to a using end unit; and a mixing valve for mixing hot water supplied from the hot-water supply tank with hot water in the hot water circuit that has been heated by the first heat exchanger, based on the temperature of the hot water in the hot water circuit that has been heated by the first heat exchanger. 9. The heat pump hot-water supply system according to claim 8, further comprising a further mixing valve for mixing unheated water supplied from the water supply pipe with hot water in the hot water circuit, based on the temperature of the hot water in the hot water circuit.
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