US 6,712,589 B2Granted

Scroll compressors

AssigneeKabushiki Kaisha Toyota Jidoshokki

InventorsTatsushi Mori, Masao Iguchi, Masahiro Kawaguchi, Yasuharu Odachi, Hirohito Hayashi

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Abstract

Scroll compressors (1) may include a housing (2, 3) having an inlet port (3a) and an outlet port (3b). A drive scroll (10) may be rotatably disposed within the housing and may have a rotational axis. A driven scroll (20) may be rotatably disposed within the housing and may have a rotational axis. The driven scroll rotational axis preferably is offset to the drive scroll rotational axis. Further, at least one compression chamber (30) is preferably defined between the drive scroll and the driven scroll. A first bearing (14) may rotatably support the drive scroll in a cantilever manner and a second bearing (24, 115) may rotatably support the driven scroll in a cantilever manner. A transmission (31, 131, 231 and 331) or other device may be provided to rotate the drive scroll in synchronism with the driven scroll.

Claims20

Dependent claims

A scroll compressor comprising:

a compressor housing having an inlet port and an outlet port,
a drive scroll rotatably disposed within the compressor housing and having a rotational axis,
a driven scroll rotatably disposed within the compressor housing and having a rotational axis, wherein the driven scroll rotational axis is offset to the drive scroll rotational axis and at least one compression chamber is defined between the drive scroll and the driven scroll,
a first bearing rotatably supporting the drive scroll in a cantilever manner,
a second bearing rotatably supporting the driven scroll in a cantilever manner,
means for permitting the driven scroll to move along the axial direction, and
means for biasing the driven scroll towards the drive scroll, wherein the biasing means comprises a discharge chamber defined within the compressor housing, the discharge chamber communicating with the outlet port and being disposed adjacent to the driven scroll, wherein refrigerant drawn into the at least one compression chamber via the inlet port and compressed within the at least one compression chamber is discharged into the discharge chamber, and the compressed refrigerant applies a force against the driven scroll that urges the driven scroll toward the drive scroll.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/123,602Filed 15 Apr 2002
Priority: JP 2001-11870517 Apr 2001
Published: US 2002/0150485 A117 Oct 2002
Granted: 30 Mar 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

F04C 18/023
Both members having co-operating elements in spiral form: where both members are moving
F01C 17/063
Using cranks, universal joints or similar elements: with only rolling movement
F04C
Rotary-piston, or oscillating-piston, positive-displacement machines for liquids
F01C
Rotary-piston or oscillating-piston machines or engines