Back to results
US 7,841,845 B2Granted
Open drive scroll machine
AssigneeEmerson Climate Technologies, Inc.
InventorKirill Ignatiev
Life of this patent
Estimating the term…
Abstract
A compressor assembly includes a planetary gear train located between an input shaft from the power unit and a drive shaft of the compressor. The planetary gear train is switchable between a high speed and a low speed condition. In the high speed condition, power is provided to the planetary gears, the ring gear is locked and output to the drive shaft is through the sun gear. In the low speed condition, a one-way clutch between the input shaft and the output shaft provides a one-to-one driving ratio.
Claims31
A two speed compressor assembly comprising:
- a compressor having a housing;
- a drive shaft rotatably supported with respect to said housing and engaging said compressor;
- an input shaft rotatably supported with respect to said housing for driving said drive shaft in a high speed condition and a low speed condition;
- a one-way clutch disposed between said drive shaft and said input shaft, said one-way clutch limiting relative rotation between said drive shaft and said input shaft to a single direction;
- and
- a gear system including a sun gear, a plurality of planetary gears and a ring gear disposed between said drive shaft and said input shaft, said drive shaft being attached to said sun gear such that said one-way clutch is disposed between said input shaft and said sun gear, said gear system being selectively switchable between said high speed condition where said drive shaft rotates faster than said input shaft and said low speed condition where said drive shaft rotates at the same speed as said input shaft, said planetary gears being fixedly coupled to said input shaft and always rotating with rotation of said input shaft;
- a clutch assembly disposed between said gear system and said housing and operable to switch said gear system between said high and low speed conditions, said clutch assembly including a biasing member that biases a component of said clutch assembly into engagement with a component of said gear system and said engagement corresponding to said high speed condition.
4 more elements
A scroll machine comprising:
- a housing;
- a power supply external to said housing;
- a first scroll member disposed within said housing, said first scroll member having a first spiral wrap;
- a second scroll member disposed within said housing, said second scroll member having a second spiral wrap intermeshed with said first spiral wrap;
- a drive shaft rotatably supported with respect to said housing, said drive shaft receiving rotational input and transferring said rotational input to one of said scroll members for causing said scroll members to orbit relative to one another whereby said spiral wraps will create pockets of progressively changing volume and are operable to compress a working fluid from a suction pressure to a discharge pressure;
- an input shaft actuated by said power supply that is rotatably supported with respect to said housing and that drives said drive shaft;
- a one-way clutch disposed between said input shaft and said drive shaft;
- a gear system including a sun gear, a plurality of planetary gears, and a ring gear disposed between said drive shaft and said input shaft, said drive shaft being attached to said sun gear such that said one-way clutch is disposed between said input shaft and said sun gear, and said gear system being selectively switchable between a high speed condition and a low speed condition;
- and
- a clutch assembly operable to switch said gear assembly between said high and low speed conditions, said clutch assembly switching said gear assembly between one of said high and low speed conditions to the other one of said high and low speed conditions in response to receiving working fluid compressed by said scroll members to a pressure greater than said suction pressure.
7 more elements
A two speed compressor assembly comprising:
- a compressor having a housing;
- a drive shaft rotatably supported with respect to said housing and engaging said compressor;
- an input shaft rotatably supported with respect to said housing for driving said drive shaft in a high speed condition and a low speed condition;
- a gear system including a sun gear, a plurality of planetary gears, and a ring gear disposed between said drive shaft and said input shaft, said gear system being selectively switchable between said high speed condition where said drive shaft rotates faster than said input shaft and said low speed condition where said drive shaft rotates at the same speed as said input shaft, said planetary gears being fixedly coupled to said input shaft and always rotating with rotation of said input shaft, and said sun gear being fixedly coupled to said drive shaft and always rotating with rotation of said drive shaft;
- and
- a clutch assembly disposed between said gear system and said housing and operable to switch said gear system between said high and low speed conditions, said clutch assembly including a biasing member that biases a component of said clutch assembly into engagement with a component of said gear system and said engagement corresponding to said high speed condition.
3 more elements
Dependencies are inferred from the claim text.