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US 7,850,438 B2Granted
Scroll fluid machine with back pressure chamber sealing
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsHajime Sato, Yoshiyuki Kimata
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AssigneeMitsubishi Heavy Industries, Ltd.
InventorsHajime Sato, Yoshiyuki Kimata
Estimating the term…
To provide a scroll type fluid machine which can ensure that even when the pressure ratio of the pressure P1 of its high pressure chamber (back pressure chamber) to the pressure P2 of its low pressure chamber (P1/P2) is low, its orbiting scroll be pressed against its fixed scroll without having its orbiting scroll increased in diameter to prevent any leakage of a fluid through between the front end face of the wall of its orbiting scroll and the bottom face of the end plate of its fixed scroll. The scroll type fluid machine has an Oldham's keyway (17) formed along the edge of the back side of the orbiting scroll end plate (13a) for holding one end portion of an Oldham's ring (10) slidably, and a sealing member (18) has a tongue part (18a) formed to cut off the flow of any fluid from the back pressure chamber to the Oldham's keyway (17).
A scroll fluid machine comprising a housing, an orbiting scroll supported in the housing so that it moves in an orbiting motion, an Oldham's ring preventing the rotation of the orbiting-scroll, a fixed member situated on the back side of the orbiting scroll and fixed to the housing, a back pressure chamber formed between the orbiting scroll and the fixed member and a sealing member situated between the fixed member and the orbiting scroll for sealing the back pressure chamber,
A scroll fluid machine comprising a housing, an orbiting scroll supported in the housing so that it revolves and orbits, an Oldham's ring preventing the rotation of the orbiting scroll, a fixed member situated on the back side of the orbiting scroll and fixed to the housing, a back pressure chamber formed between the orbiting scroll and the fixed member and a sealing member situated between the fixed member and the orbiting scroll for sealing the back pressure chamber,
A scroll fluid machine comprising a housing, an orbiting scroll supported in the housing so that it revolves and orbits, an Oldham's ring preventing the rotation of the orbiting scroll, a fixed member situated on the back side of the orbiting scroll and fixed to the housing, a back pressure chamber formed between the orbiting scroll and the fixed member, wherein the back pressure chamber is at a high pressure, and a sealing member situated between the fixed member and the orbiting scroll for sealing the back pressure chamber,
Dependencies are inferred from the claim text.