Scroll-type compressor
First Claim
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1. A scroll-type compressor comprising:
- a fixed scroll that is fixed in a casing an orbiting scroll that engages with said fixed scroll, a pressing part that presses said orbiting scroll against said fixed scroll in an axial direction, and an adjusting mechanism that adjusts a pressing force of said orbiting scroll against said fixed scroll said adjusting mechanism being configured and arranged such that an anti-overturning moment to decrease an overturning moment acting on said orbiting scroll during revolution of said orbiting scroll is produced in a revolving-angle area of said orbiting scroll in which said overturning moment becoming at least a certain value or more.
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Abstract
An adjusting mechanism is provided to produce an anti-overturning moment to reduce an overturning moment acting on an orbiting scroll during its revolution in a revolving-angle area in which the overturning moment becomes a at least a certain value. Accordingly, revolution movement of the orbiting scroll can be made stable by changing a pressing force of the orbiting scroll against the fixed scroll according to fluctuation of the overturning moment due to the revolution of the orbiting scroll, thereby improving the compression efficiency of a scroll-type compressor.
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Citations
18 Claims
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1. A scroll-type compressor comprising:
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a fixed scroll that is fixed in a casing an orbiting scroll that engages with said fixed scroll, a pressing part that presses said orbiting scroll against said fixed scroll in an axial direction, and an adjusting mechanism that adjusts a pressing force of said orbiting scroll against said fixed scroll said adjusting mechanism being configured and arranged such that an anti-overturning moment to decrease an overturning moment acting on said orbiting scroll during revolution of said orbiting scroll is produced in a revolving-angle area of said orbiting scroll in which said overturning moment becoming at least a certain value or more. - View Dependent Claims (2, 3, 4, 5, 6, 7, 14, 15, 16, 17, 18)
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8. A scroll-type compressor comprising:
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a fixed scroll that is fixed in a casing, an orbiting scroll that engages with said fixed scroll, a pressing part that presses said orbiting scroll against said fixed scroll in an axial direction, and an adjusting mechanism that adjusts a pressing force of said orbiting scroll against said fixed scroll, said adjusting mechanism being configured and arranged to produce a pressing-back force to press back said orbiting scroll from said fixed scroll against said pressing force, while said adjusting mechanism cutting off said pressing-back force in a revolving-angle area of said orbiting scroll in which an overturning moment acting on said orbiting scroll during its revolution of said orbiting scroll due to gas compression becoming at least a certain value. - View Dependent Claims (9)
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10. A scroll-type compressor comprising:
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a fixed scroll that is fixed in a casing, an orbiting scroll that engages with the said fixed scroll, a pressing part that presses said orbiting scroll against the said fixed scroll in an axial direction, and an adjusting mechanism that adjusts a pressing force of said orbiting scroll against said fixed scroll, said adjusting mechanism being configured and arranged to produce a pressing-back force to press back said orbiting scroll from said fixed scroll against said pressing force, while said adjusting mechanism reducing said pressing-back force in a revolving-angle area of said orbiting scroll in which an overturning moment acting on said orbiting scroll during revolution of said orbiting scroll due to gas compression becoming at least a certain value. - View Dependent Claims (11, 12, 13)
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Specification