Rotary compressor and refrigerant cycle system having the same
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0690583
(2003-10-23)
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우선권정보 |
KR-0061758 (2003-09-04); KR-0000949 (2003-01-08) |
발명자
/ 주소 |
- Choi, Jin Kyu
- Kim, Cheol Woo
- Seo, Kook Jeong
|
출원인 / 주소 |
- Samsung Electronics Co., Ltd.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
6 인용 특허 :
4 |
초록
▼
Disclosed herein are a variable capacity rotary compressor and a refrigerant cycle system having the variable capacity rotary compressor. The compressor includes a cooling unit and a pressure reducing unit to reduce temperature and pressure of a bypassed refrigerant, thus allowing the bypassed refri
Disclosed herein are a variable capacity rotary compressor and a refrigerant cycle system having the variable capacity rotary compressor. The compressor includes a cooling unit and a pressure reducing unit to reduce temperature and pressure of a bypassed refrigerant, thus allowing the bypassed refrigerant to have the same temperature and pressure as when entering a cylinder at first. The compressor includes the cylinder in which a refrigerant is compressed. An inlet pipe delivers the refrigerant into the cylinder. An outlet pipe delivers the refrigerant out of the cylinder. A bypass hole is provided at a predetermined position of the cylinder to bypass the refrigerant from the cylinder, thus varying a compression capacity. A bypass pipe connects the bypass hole to the inlet pipe to allow the refrigerant bypassed through the bypass hole to enter the cylinder. The cooling unit cools the refrigerant flowing through the bypass pipe. The pressure reducing unit reduces a pressure of the refrigerant which flows through the bypass pipe. Therefore, the refrigerant cycle system having the variable capacity rotary compressor prevents the operational efficiency of a refrigeration cycle from being reduced, in addition to preventing reduction of power consumption, even when the compressor of the refrigerant cycle system is operated in a small capacity compression mode.
대표청구항
▼
1. A variable capacity rotary compressor, comprising:a cylinder in which a refrigerant is compressed; an inlet pipe to deliver the refrigerant into the cylinder; an outlet pipe to deliver the refrigerant out of the cylinder; a bypass hole provided at a predetermined position of the cylinder to bypas
1. A variable capacity rotary compressor, comprising:a cylinder in which a refrigerant is compressed; an inlet pipe to deliver the refrigerant into the cylinder; an outlet pipe to deliver the refrigerant out of the cylinder; a bypass hole provided at a predetermined position of the cylinder to bypass the refrigerant from the cylinder, thus varying a compression capacity; a bypass pipe connecting the bypass hole to the inlet pipe to allow the refrigerant bypassed through the bypass hole to enter the cylinder; and a cooling unit to cool the refrigerant flowing through the bypass pipe. 2. The variable capacity rotary compressor according to claim 1, further comprising a pressure reducing unit to reduce a pressure of the refrigerant which flows through the bypass pipe.3. The variable capacity rotary compressor according to claim 2, wherein the pressure reducing unit is provided on the bypass pipe between the cooling unit and the inlet pipe.4. The variable capacity rotary compressor according to claim 3, further comprising a control unit to control a flow of the refrigerant which flows through the bypass pipe.5. The variable capacity rotary compressor according to claim 4, wherein the control unit comprises:a check valve to open or dose the bypass hole; a connection pipe to connect the outlet pipe to the bypass pipe; and a three-way valve provided at a junction between the bypass pipe and the connection pipe, the bypass pipe comprising a first pipe portion between the bypass hole and the three-way valve and a second pipe portion between the three-way valve and the inlet pipe, and the three-way valve being controlled to allow the first pipe portion to communicate with the second pipe portion or the connection pipe. 6. The variable capacity rotary compressor according to claim 5, wherein, when the three-way valve is controlled to allow the first pipe portion to communicate with the second pipe portion, the check valve is opened to bypass the refrigerant through the bypass hole, thus executing a small capacity compression mode, and when the three-way valve is controlled to allow the first pipe portion to communicate with the connection pipe, the check valve is closed to execute a large capacity compression mode.7. The variable capacity rotary compressor according to claim 5, wherein the cooling unit and the pressure reducing unit are provided at predetermined positions of the second pipe portion of the bypass pipe.8. A variable capacity rotary compressor, comprising:a cylinder in which a refrigerant is compressed; an inlet pipe to deliver the refrigerant into the cylinder; an outlet pipe to deliver the refrigerant out of the cylinder; a bypass hole provided at a predetermined position of the cylinder to bypass the refrigerant from the cylinder, thus varying a compression capacity; a bypass pipe connecting the bypass hole to the inlet pipe to allow the refrigerant bypassed through the bypass hole to enter the cylinder; and a pressure reducing unit to reduce a pressure of the refrigerant which flows through the bypass pipe. 9. The variable capacity rotary compressor according to claim 8, wherein the pressure reducing unit comprises a capillary tube.10. A refrigerant cycle system, comprising a compressor, a condenser, an expander, and an evaporator, the compressor comprising a variable capacity rotary compressor which comprises:a cylinder in which a refrigerant is compressed; an inlet pipe to deliver the refrigerant into the cylinder; an outlet pipe to deliver the refrigerant out of the cylinder; a bypass hole provided at a predetermined position of the cylinder to bypass the refrigerant from the cylinder, thus varying a compression capacity; a bypass pipe connecting the bypass hole to the inlet pipe to allow the refrigerant bypassed through the bypass hole to enter the cylinder; and a cooling unit to cool the refrigerant flowing through the bypass pipe. 11. The refrigerant cycle system according to claim 10, wherein the cooling unit is provided at a predetermined portion of the condenser.12. The refrigerant cycle system according to claim 10, wherein the variable capacity rotary compressor further comprises a pressure reducing unit to reduce a pressure of the refrigerant which flows through the bypass pipe.13. The refrigerant cycle system according to claim 12, wherein the pressure reducing unit is provided on the bypass pipe between the cooling unit and the inlet pipe.14. The refrigerant cycle system according to claim 10, wherein the compressor further comprises a control unit to control a flow of the refrigerant which flows through the bypass pipe, the control unit comprising:a check valve to open or close the bypass hole; a connection pipe to connect the outlet pipe to the bypass pipe; and a three-way valve provided at a junction between the bypass pipe and the connection pipe. 15. A refrigerant cycle system, comprising a compressor, a condenser, an expander, and an evaporator, the compressor comprising a variable capacity rotary compressor which comprises:a cylinder in which a refrigerant is compressed; an inlet pipe to deliver the refrigerant into the cylinder; an outlet pipe to deliver the refrigerant out of the cylinder; a bypass hole provided at a predetermined position of the cylinder to bypass the refrigerant from the cylinder, thus varying a compression capacity; a bypass pipe connecting the bypass hole to the inlet pipe to allow the refrigerant bypassed through the bypass hole to enter the cylinder; and a pressure reducing unit to reduce a pressure of the refrigerant which flows through the bypass pipe.
이 특허에 인용된 특허 (4)
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Shaw David N., Boosted air source heat pump.
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Shibamoto, Yoshitaka; Matsuba, Kenji; Yoshimura, Keiji, Scroll compressor and air conditioner.
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Hirota Hisatoshi,JPX, Vehicular refrigerating cycle with a bypass line.
이 특허를 인용한 특허 (6)
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Masao, Ozu, Capacity variable type rotary compressor and driving method thereof.
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Moon, Dong Soo; Kim, Hyun Jong; Chin, Sim Won, Capacity-variable air conditioner.
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Santos, Pedro; Pitts, Jeremy; Nelson, Andrew; Santen, Johannes; Walton, John; Westwood, Mitchell; O'Hanley, Harrison, Compressor.
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Santos, Pedro; Pitts, Jeremy; Nelson, Andrew; Santen, Johannes; Walton, John; Westwood, Mitchell; O'Hanley, Harrison, Compressor with liquid injection cooling.
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Santos, Pedro; Pitts, Jeremy; Nelson, Andrew; Santen, Johannes; Walton, John; Westwood, Mitchell; O'Hanley, Harrison, Compressor with liquid injection cooling.
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Santos, Pedro; Pitts, Jeremy; Nelson, Andrew; Santen, Johannes; Walton, John; Westwood, Mitchell; O'Hanley, Harrison, Compressor with liquid injection cooling.
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