IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0200835
(2002-07-22)
|
우선권정보 |
KR-0053085 (2001-08-31) |
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
16 인용 특허 :
8 |
초록
▼
A heat pump system using air as its heat source is disclosed. In this system, the refrigeration circuit consists of both a main refrigerant line and a refrigerant suction line. A heat accumulator, containing both a heat medium and a heat storage phase change material, is mounted on the refrigerant l
A heat pump system using air as its heat source is disclosed. In this system, the refrigeration circuit consists of both a main refrigerant line and a refrigerant suction line. A heat accumulator, containing both a heat medium and a heat storage phase change material, is mounted on the refrigerant line at a position between the cooling mode and heating mode expansion valves. A heat-dissipating heat exchanger is mounted on the main refrigerant line, and is set in the accumulator. A subsidiary heat exchanger is installed around the inlet port of the outdoor heat exchanger, and is connected to the heat accumulator through heat medium lines with a circulating pump. The system also has a heat pipe consisting of both an evaporating part installed at the periphery of the heat-dissipating heat exchanger, and a heat dissipating part installed at the periphery of the heat accumulator and connected to the evaporating part through a connection pipe. First and second heat-absorbing heat exchangers are connected to the refrigerant suction line in parallel to each other such that the first and second heat-absorbing heat exchangers are respectively set in the heat dissipating part and the heat accumulator, and selectively operated in accordance with the temperature of refrigerant flowing through the suction line to be returned to the compressor.
대표청구항
▼
1. A heat pump system, comprising: a basic refrigeration circuit consisting of: a main refrigerant line starting from a compressor, and extending while sequentially connecting a four-way valve, an indoor heat exchanger, a cooling mode expansion valve, a heating mode expansion valve and an outdo
1. A heat pump system, comprising: a basic refrigeration circuit consisting of: a main refrigerant line starting from a compressor, and extending while sequentially connecting a four-way valve, an indoor heat exchanger, a cooling mode expansion valve, a heating mode expansion valve and an outdoor heat exchanger to each other, prior to being ended at said to four-way valve; and a refrigerant suction line extending from said four-way valve to said compressor; a heat accumulator containing both a heat medium and a heat storage phase change material therein, and mounted on the main refrigerant line at a position between said cooling mode expansion valve and said heating mode expansion valve; a heat-dissipating heat exchanger mounted on said main refrigerant line, and set in said accumulator by allowing the main refrigerant line to pass through the heat accumulator; a subsidiary heat exchanger installed at a position around an inlet port of said outdoor heat exchanger and connected to said heat accumulator through heat medium feed and return lines, with a circulating pump mounted on said heat medium return line; a heat pipe consisting of: an evaporating part installed at a periphery of said heat-dissipating heat exchanger; and a heat dissipating part installed at a periphery of said heat accumulator, and connected to said evaporating part through a connection pipe; and first and second heat-absorbing heat exchangers connected to said refrigerant suction line in parallel to each other such that the first heat-absorbing heat exchanger is set in said heat dissipating part, and the second heat-absorbing heat exchanger is set in said heat accumulator, said first and second heat-absorbing heat exchangers being selectively operated in accordance with a temperature of refrigerant flowing through the suction line to be returned to the compressor. 2. The heat pump system according to claim 1, wherein said circulating pump is operated when outdoor air has a temperature of not higher than 5° C. or not lower than 30° C. 3. The heat pump system according to claim 1, wherein said circulating pump is controlled by a control circuit, said control circuit comprising: a high temperature sensor and a low temperature sensor installed at positions around the inlet port of said outdoor heat exchanger and outputting temperature signals; a first comparator receiving both a reference voltage signal indicating a reference high outdoor temperature at a negative terminal thereof, and a voltage signal outputted from the high temperature sensor at a positive terminal thereof, and comparing voltages of the input signals with each other, and outputting a logic signal indicating a result of the voltage comparison; a second comparator receiving both a reference voltage signal indicating a reference low outdoor temperature at a positive terminal thereof, and a voltage signal from the low temperature sensor at a negative terminal thereof, and comparing voltages of the input signals with each other, and outputting a logic signal indicating a result of the voltage comparison; an inverter receiving the logic signal outputted from the second comparator so as to invert a logic state of said logic signal; an OR gate receiving a signal outputted from said first comparator or from said inverter, and performing an OR operation, and outputting an OR operation result; and a switch turned on to electrically activate and start said circulating pump when said OR operational result is logic high. 4. The heat pump system according to claim 1, wherein said heat accumulator is provided with a heater. 5. The heat pump system according to claim 1, wherein a solenoid valve is provided at an inlet port of each of the first and second heat-absorbing heat exchangers, and is controllably opened in response to a signal outputted from an additional temperature sensor provided on the refrigerant suction line at a position around the inlet port of said compressor.
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