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EP0157390A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Scroll-type hydraulic machine

Assignee: Mitsubishi Electric Corp
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Filing: 1985-03-29
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Granted: —
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Expires: 2005-03-29
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Abstract

Abstract A scroll-type compressor including stationary and orbiting scrolls (1, 2) housed in a shell (9). A first frame (6), also housed in the shell (9), receives a portion of the orbiting scroll (2). The stationary scroll (1) is fixed to the first frame (6), and a second frame (7) is further mounted in the shell (9). A balancer chamber (705) is formed between the first and second frames (6, 7). A main shaft (4) having a balancer (402) is housed in the balancer chamber (705) rotatably. The main shaft (4) includes an enlarged diameter portion (408) adjacent the orbiting scroll (2) and a small diameter portion (409) disposed away from the orbiting scroll (2) and extends between the first frame (6) and the second frame (7) for driving the orbiting scroll (2). A first bearing (602) is disposed between the main shaft (4) at a position at the orbiting scroll side of the balancer (402). A second bearing (702) is disposed between the main shaft (4) and the second frame (7) for supporting the main shaft (4) at a position opposite the orbiting scroll side of the balancer (402).

Inventors

  • 👤 Tsutomu C/O Mitsubishi Denki K.K. Inaba
  • 👤 Masahiro C/O Mitsubishi Denki K.K. Sugihara
  • 👤 Toshiyuki C/O Mitsubishi Denki K.K. Nakamura
  • 👤 Masahiko C/O Mitsubishi Denki K.K. Oide
  • 👤 Tadashi C/O Mitsubishi Denki K.K. Kimura
  • 👤 Norihide C/O Mitsubishi Denki K.K. Kobayashi

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-06 13:20
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/02; F04C29/00; F04C29/0021; F01; F01C; F01C17/00; F01C17/06; F01C17/066; F04C18/0207; F04C18/0215; F04C29/02; F04C29/023; F04C23/00; F04C23/008

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 254 words
A scroll-type hydraulic machine characterised by: a stationary scroll (1) housed in a shell (9); an orbiting scroll (2) housed in said shell (9) and, when driven, orbiting to control a volume of fluid in cooperation with said stationary scroll (1); a first frame (6) housed in said shell (9), said first frame (6) being adapted to receive a portion of said orbiting scroll (2), said stationary scroll (1) being fixed to said first frame (6), a second frame (7) mounted in said shell (9), said first frame (6) being mounted on said second frame; a balancing chamber (705) formed between said first (6) and second (7) frames; a main shaft (4) having a balancer (402) disposed in said balancer chamber (705) rotatably, said main shaft (4) including a large diameter portion (408) positioned on a side of said orbiting scroll (2) and a small diameter portion (409) positioned opposite to said side of said orbiting scroll (2) and extending between said first frame (6) and said second frame (7) for driving said orbiting scroll (2); a first bearing (602) disposed between said main shaft (4) and said first frame (6) for supporting said main shaft (4) at a position at said side of said orbiting scroll (2) with respect to said balancer (402); and a second bearing disposed (702) between said main shaft (4) and said second frame (7) for supporting said main shaft (4) at a position opposite to said side of said orbiting scroll (2) with respect to said balancer (402).
Claim 2
Dependent Claim 254 words
A scroll-type hydraulic machine characterised by: a stationary scroll (1) housed in a shell (9); an orbiting scroll (2) housed in said shell (9) and, when driven, orbiting to control a volume of fluid in cooperation with said stationary scroll (1); a first frame (6) housed in said shell (9), said first frame (6) being adapted to receive a portion of said orbiting scroll (2), said stationary scroll (1) being fixed to said first frame (6), a second frame (7) mounted in said shell (9), said first frame (6) being mounted on said second frame; a balancing chamber (705) formed between said first (6) and second (7) frames; a main shaft (4) having a balancer (402) disposed in said balancer chamber (705) rotatably, said main shaft (4) including a large diameter portion (408) positioned on a side of said orbiting scroll (2) and a small diameter portion (409) positioned opposite to said side of said orbiting scroll (2) and extending between said first frame (6) and said second frame (7) for driving said orbiting scroll (2); a first bearing (602) disposed between said main shaft (4) and said first frame (6) for supporting said main shaft (4) at a position at said side of said orbiting scroll (2) with respect to said balancer (402); and a second bearing disposed (702) between said main shaft (4) and said second frame (7) for supporting said main shaft (4) at a position opposite to said side of said orbiting scroll (2) with respect to said balancer (402).
Claim 3
Dependent Claim 28 words
A machine according to claim 1 wherein said balancer (402') is mounted on said shaft (4) between said large diameter portion (408) and said small diameter portion (409).
Claim 4
Dependent Claim 21 words
A machine according to claim 1 or 2 wherein an eccentric hole (401) is provided in said large diameter portion (408).
Claim 5
Dependent Claim 23 words
A machine according to any one of claims 1 to 3 wherein an oil passage (404) is provided longitudinally of said shaft (4).
Claim 6
Dependent Claim 25 words
A machine according to any one of claims 1 to 4 wherein a further balancer (403) is provided for common rotation with said shaft (4).

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