[특허]Scroll compressor having optimized oil passages

Scroll compressor having optimized oil passages 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F04C-018/04 F04C-027/00 F04C-029/02
출원번호	US-0586321 (1996-01-17)
우선권정보	JP-0004882 (1995-01-17)
발명자 / 주소	Fujio Katsuharu (Koga-gun JPX) Sano Kiyoshi (Otsu JPX) Hase Syouzou (Hikone JPX) Morimoto Takashi (Nagaokakyo JPX) Yamamoto Shuichi (Otsu JPX)
출원인 / 주소	Matsushita Electric Industrial Co., Ltd. (Osaka-fu JPX 03)
인용정보	피인용 횟수 : 35 인용 특허 : 0

초록 ▼

A scroll compressor comprises a generally cylindrical casing and stationary and orbiting scrolls both accommodated in the casing. The stationary and orbiting scrolls engage with each other to define a plurality of compression chambers therebetween. The orbiting scroll is driven by a drive shaft which is in turn supported by a frame having a thrust bearing formed thereon. One of an orbiting end plate of the orbiting scroll and the thrust bearing has an annular groove defined therein in which an annular seal member is received. The orbiting scroll is disposed between the stationary scroll and the frame with an axial gap defined therebetween. First, second, and third back chambers are formed on the opposite side of the compression chambers with respect to the orbiting end plate. The first and second back chambers are partitioned by the annular seal member. The second back chamber is provided radially outwardly of the first back chamber and between the orbiting end plate and the thrust bearing, while the third back chamber is provided radially outwardly of the second back chamber. Oil passages are provided to introduce lubricating oil accommodated in the casing into the first chamber in which a discharge pressure acts. The oil passages act to supply part of the lubricating oil to the second chamber and then to the third chamber while reducing the pressure of the lubricating oil until the lubricating oil is eventually introduced into the suction chamber.

대표청구항 ▼

A scroll compressor comprising: a generally cylindrical casing; a stationary scroll member accommodated in said cylindrical casing and having a stationary end plate and a stationary scroll wrap protruding axially from said stationary end plate, said stationary scroll member also having a discharge port defined therein at a central portion thereof and a suction chamber formed outside said stationary scroll wrap; an orbiting scroll member accommodated in said cylindrical casing and having an orbiting end plate and an orbiting scroll wrap protruding axially from said orbiting end plate so as to engage with said stationary scroll wrap to define a plurality of compression chambers therebetween, said orbiting end plate having an oil passage defined therein; a drive shaft rotatably accommodated in said cylindrical casing for orbiting said orbiting scroll member relative to said stationary scroll member; a frame for rotatably supporting said drive shaft, said frame having a thrust bearing formed thereon for axially supporting said orbiting end plate; a rotation constraint element for preventing rotation of said orbiting scroll member about its own axis; an annular seal member received in an annular groove defined in one of said orbiting end plate and said thrust bearing; said orbiting scroll member being disposed between said stationary scroll member and said frame with an axial gap defined therebetween; first, second, and third back chambers formed on an opposite side of said orbiting end plate with respect to said compression chambers, said first and second back chambers being partitioned by said annular seal member, said second back chamber being provided radially outwardly of said first back chamber and between said orbiting end plate and said thrust bearing, said third back chamber being provided radially outwardly of said second back chamber; and an oil passage means for introducing lubricating oil accommodated in said cylindrical casing into said first chamber in which a discharge pressure acts, said oil passage means supplying a portion of said lubricating oil to said second chamber and then to said third chamber through said oil passage in said orbiting end plate while reducing a pressure of said portion of said lubricating oil until said portion of said lubricating oil is eventually introduced into said suction chamber.

이 특허를 인용한 특허 (35)

Utter Robert E. ; Haller David K., Bearing lubrication system for a scroll compressor.
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Williams John R. ; Fields Gene Michael ; Hill Joe T. ; Milliff Tracy ; Lyons Terry L., Capacity modulation for scroll compressors.
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Skinner,Robin G.; Haney,Richard C., Compressor assembly having baffle.
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Haller, David K.; Skinner, Robin G.; Haney, Richard C., Compressor assembly having crankcase.
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Skinner,Robin G, Compressor discharge assembly.
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Skinner,Robin G, Compressor having alignment bushings and assembly method.
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Haller, David K., Compressor having bearing support.
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Skinner,Robin G, Compressor having counterweight shield.
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Haller,David K.; Skinner,Robin G., Compressor having discharge valve.
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Skinner,Robin G., Compressor mounting bracket and method of making.
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Skinner,Robin G., Compressor mounting bracket and method of making.
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Yasu Toshiharu,JPX ; Sakai Manabu,JPX ; Takeuchi Yoshiharu,JPX ; Aburaya Kiyoji,JPX ; Aoshika Shoji,JPX ; Narita Tsutayoshi,JPX, Hermetic electric scroll compressor having a lubricating passage in the orbiting scroll.
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Tarng Guang-Der,TWX ; Chang Lung-Tsai,TWX, High-low pressure chamber sealing arrangement of a volute compressor.
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Haller,David K; Skinner,Robin G, Horizontal compressor end cap.
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Haller,David K.; Skinner,Robin G., Horizontal compressor end cap with a terminal, a visually transparent member, and a heater well mounted on the end cap projection.
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Elson, John P; Vehr, Shawn W; Ramey, William E, Horizontal scroll compressor.
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Elson,John P; Butler,Brian R, Inclined scroll machine having a special oil sump.
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Makino,Masahiko; Kajitani,Minoru; Ogawa,Nobuaki; Abe,Yoshifumi; Fujiwara,Yukihiro, Liquid recovery method and system for compression mechanism.
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Shin,Dong koo; Cho,Yang hee; Kim,Cheol hwan, Oil supply structure of scroll compressor.
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Kazakis Michael V. ; Jones Charlie E., Oiless rotary scroll air compressor crankshaft assembly.
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Elson, John P.; Berning, Jeffrey L.; Sheridan, John P., Open drive scroll compressor with lubrication system.
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Elson John Paul ; Rajendran Natarajan ; DeVore Todd Alan, Open drive scroll machine.
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Ignatiev, Kirill, Open drive scroll machine.
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Theodore, Jr., Michael Gregory, Orbit control device for a scroll compressor.
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Masumoto Kouji,JPX ; Nakashima Hiroshi,JPX ; Sano Fumiaki,JPX ; Ikeda Kiyoharu,JPX, Scroll compressor.
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Iida, Noboru; Sakuda, Atsushi; Hiwata, Akira; Sawai, Kiyoshi, Scroll compressor having a back pressure chamber comprising high and middle pressure chambers.
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Tsuka, Yoshitomo; Nishide, Youhei, Scroll compressor having first and second oil grooves formed in fixed and orbiting scroll that are communicable.
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Yamada Sadayuki,JPX ; Morimoto Takashi,JPX ; Hirano Hideo,JPX ; Kawano Hiroyuki,JPX ; Oka Hideto,JPX ; Muramatsu Shigeru,JPX, Scroll compressor having lubrication of the rotation preventing member.
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Yamada, Sadayuki; Sakuda, Atsushi; Futagami, Yoshiyuki; Morimoto, Takashi; Ogawa, Nobuaki; Abe, Yoshifumi, Scroll compressor having out-of-phase back pressure chamber and compression chamber oil-feeding paths.
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Michael Mikhaylovich Perevozchikov ; Roy Doepker, Scroll machine with ported orbiting scroll member.
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Perevozchikov,Michael M.; Doepker,Roy J., Scroll machine with ported orbiting scroll member.
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DeVore Todd ; Huddleston Jeff, Suction inlet screen and funnel for a compressor.
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Tarng Guang-Der,TWX ; Chang Lung-Tsai,TWX, Volute compressor.
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