[특허]Air conditioner

Mitsubishi Electric Corporation

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Air conditioner

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25B-041/00 F24F-003/06 F25B-013/00 F24F-011/00 F25B-001/10 F25B-025/00
출원번호	US-0990568 (2008-11-17)
등록번호	US-9212825 (2015-12-15)
우선권정보	JP-2008-119073 (2008-04-30)
국제출원번호	PCT/JP2008/070841 (2008-11-17)
§371/§102 date	20110112 (20110112)
국제공개번호	WO2009/133644 (2009-11-05)
발명자 / 주소	Wakamoto, Shinichi Yamashita, Koji Okazaki, Takashi Tanaka, Naoki Hokazono, Keisuke Morimoto, Hiroyuki Motomura, Yuji Hatomura, Takeshi Kasai, Tomohiko
출원인 / 주소	Mitsubishi Electric Corporation
대리인 / 주소	Oblon, McClelland, Maier & Neustadt, L.L.P.
인용정보	피인용 횟수 : 4 인용 특허 : 11

초록
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A multi-chamber air conditioner including a heat-source side refrigerant circuit in which a compressor, an outdoor heat exchanger, a first heat exchanger, a refrigerant flow-rate controller, and a second heat exchanger are connected in series, a first use-side refrigerant circuit in which the first heat exchanger and an indoor heat exchanger are connected in series, and a second use-side refrigerant circuit in which the second heat exchanger and the indoor heat exchanger are connected in series, and a heat-source side refrigerant circulating in the heat-source side refrigerant circuit and a use-side refrigerant circulating in the use-side refrigerant circuit are heat-exchanged in the first heat exchanger. The heat-source side refrigerant circulating in the heat-source side refrigerant circuit and the use-side refrigerant circulating in the use-side refrigerant circuit are heat-exchanged in the second heat exchanger.

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1. An air conditioner comprising: a heat-source side refrigerant circuit in which a compressor, an outdoor heat exchanger, a plurality of intermediate heat exchangers, a first refrigerant flow-rate controller disposed between said plurality of intermediate heat exchangers, and a second refrigerant flow-rate controller disposed on an inlet side of a first intermediate heat exchanger located on an upstream side of said plurality of intermediate heat exchangers and a third refrigerant flow rate controller disposed on an outlet side of second intermediate heat exchanger located on downstream side in said plurality of intermediate heat exchangers are connected in series; anda plurality of use-side refrigerant circuits in which each of said plurality of intermediate heat exchangers and a plurality of indoor heat exchangers are connected in parallel,wherein said compressor and said outdoor heat exchanger are disposed in an outdoor unit;wherein said plurality of intermediate heat exchangers, said first refrigerant flow-rate controller, and said second refrigerant flow-rate controller and said third flow rate controller are disposed in a relay portion;wherein said plurality of indoor heat exchangers are disposed in a plurality of indoor units, respectively;wherein said outdoor unit and said relay portion are connected by two refrigerant pipelines;wherein in said plurality of intermediate heat exchangers, a heat-source side refrigerant circulating in said heat-source side refrigerant circuit and a use-side refrigerant circulating in said use-side refrigerant circuit perform heat exchange, wherein operation modes of the air conditioner includea full-cooling operation mode in which only a cooling operation is possible for all of the plurality of indoor units,a full-heating operation mode in which only a heating operation is possible for all of the plurality of the indoor units, anda simultaneous cooling and/or heating operation mode in which a cooling operation and a heating operation can be selected for each indoor unit;wherein, in said simultaneous cooling and/or heating operation mode, an opening degree of said first refrigerant flow-rate controller is throttled and said first intermediate heat exchanger operates as a condenser and said second intermediate heat exchanger operates as an evaporator,wherein said first refrigerant flow-rate controller is fully opened and an opening degree of said second refrigerant flow-rate controller is throttled and all the intermediate heat exchangers operate as an evaporator in said full-cooling operation mode or wherein an opening degree of said third refrigerant flow-rate controller is throttled in said full-heating operation and said first refrigerant flow-rate controller and said second refrigerant flow-rate controller are fully opened and all the intermediate heat exchangers operate as a condenser in said full-heating operation mode, and wherein in each of said full-cooling operation mode and full-heating operation mode,each indoor heat exchanger is connected to all of the plurality of intermediate heat exchangers,the use-side refrigerant flowing out of each of the plurality of intermediate heat exchanger flows into each indoor heat exchanger after merging outside of the plurality of intermediate heat exchangers at a front side of each indoor heat exchanger, andthe use-side refrigerant flowing out of each indoor heat exchanger flows into each intermediate heat exchanger after branching at a front side of each intermediate heat exchanger. 2. The air conditioner of claim 1, wherein said relay portion and each of said plurality of indoor units are connected by two extension pipelines. 3. The air conditioner of claim 2, wherein a use-side refrigerant channel switching portion, capable of selectively switching said plurality of use-side refrigerant circuits disposed in said relay portion, is disposed in said relay portion; andsaid use-side refrigerant channel switching portion selectively switches said plurality of use-side refrigerant circuits by connecting any one of said plurality of intermediate heat exchangers to a selected one of said indoor heat exchangers. 4. The air conditioner of claim 1, wherein, in said plurality of intermediate heat exchangers disposed in said relay portion, said heat-source side refrigerant circulating in said heat-source side refrigerant circuit and said use-side refrigerant circulating in said use-side refrigerant circuit are counterflows. 5. The air conditioner of claim 1, wherein, in said relay portion, a use-side refrigerant flow-rate control portion controlling a flow rate of the use-side refrigerant circulating in said use-side refrigerant circuit is disposed. 6. The air conditioner of claim 5, wherein said use-side refrigerant flow-rate control portion adjusts a flow rate of the use-side refrigerant to be supplied to said plurality of indoor units based on at least one of a temperature of the use-side refrigerant flowing into said plurality of indoor units and a temperature of the use-side refrigerant flowing out of said plurality of indoor units. 7. The air conditioner of claim 5, wherein said use-side refrigerant flow-rate control portion adjusts a flow rate of the use-side refrigerant to be supplied to said plurality of intermediate heat exchangers based on at least one of a temperature of the use-side refrigerant flowing into said plurality of intermediate heat exchangers and a temperature of the use-side refrigerant flowing out of said plurality of intermediate heat exchangers. 8. The air conditioner of claim 1, wherein at least one of water and an antifreezing solution is used for the use-side refrigerant to be circulated in said use-side refrigerant circuit. 9. The air conditioner of claim 1, wherein a natural refrigerant, or a refrigerant having a global warming coefficient smaller than a global warming coefficient of a fluorocarbon refrigerant, is used for the heat-source side refrigerant to be circulated in said heat-source side refrigerant circuit. 10. The air conditioner of claim 1, wherein in said plurality of intermediate heat exchangers, said heat-source side refrigerant heats said use-side refrigerant without condensation in a supercritical state. 11. The air conditioner of claim 1, wherein said plurality of indoor units are installed in a living space disposed on each floor of a building, respectively; andsaid outdoor unit and said relay portion are not installed in said living space. 12. The air conditioner of claim 11, wherein said relay portion is installed in a common space disposed in said building. 13. The air conditioner of claim 1, wherein the heat source side refrigerant is a refrigerant of which a standard for a permissible concentration of the refrigerant leaking into a space is determined by international standards,either water or antifreezing fluid is used for the use-side refrigerant,the plurality of indoor units are installed in a living space,the outdoor unit and the relay portion are installed outside the living space,the relay portion and each indoor units and are connected with two pipes, andthe air conditioner is operable to perform both heating and cooling operations at the same time. 14. The air conditioner of claim 1, wherein said heat-source side refrigerant circuit includes a bypass pipeline which bypasses at least one of said plurality of intermediate heat exchangers disposed in said relay portion; andbypass refrigerant flow-rate control means disposed in said bypass pipeline, said bypass refrigerant flow-rate control means controlling a flow rate of the heat-source side refrigerant flowing through the bypass pipeline. 15. The air conditioner of claim 1, wherein said heat-source side refrigerant circuit includes a gas-liquid separator disposed on the inlet side of the first intermediate heat exchanger located on an upstream side of said relay portion;a liquid-state refrigerant bypass pipeline for bypassing a liquid-state refrigerant separated by said gas-liquid separator to an outlet side of said first intermediate heat exchanger; anda liquid-state refrigerant flow-rate controller installed in said liquid-state refrigerant bypass pipeline , said liquid-state refrigerant flow-rate controller controlling a flow rate of the heat-source side refrigerant flowing through the liquid-state refrigerant bypass pipeline.

이 특허에 인용된 특허 (11)

이 특허를 인용한 특허 피인용횟수: 4

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Air conditioner

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Air conditioner

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이 특허에 인용된 특허 (11)

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