EP0219283A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Variable capacity wobble plate type compressor
Assignee: Sanden Corp
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Filing: 1986-10-03
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Granted: —
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Expires: 2006-10-03
Abstract
Abstract In a wobble plate type compressor with a variable capacity mechanism, the displacement is changed by varying the angle of the wobble plate (15), in response to a change in the pressure difference between a crank chamber (32) and a suction chamber (52). The pressure in the crank chamber (32) is maintained uniform by a valve, such as a bellows (63) and a needle valve (631) which allows excess pressure in the crank chamber to escape to the suction chamber.
Inventors
- 👤 Kiyoshi Terauchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 01:53
CPC Classifications
F; F04; F04B; F04B13/00; F04B27/00; F04B27/08; F04B27/10; F04B27/1036; F04B27/1054; F04B27/1072; F04B27/14; F04B27/16; F04B27/18; F04B27/1804; F04B2027/1809; F04B2027/1813; F04B2027/1822; F04B2027/1831; F04B2027/184; F04B2027/1845
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
228 words
A wobble plate type compressor with a variable capacity mechanism, the compressor comprising a cylindrical casing (3) including a cylinder block (31) and a crank chamber (32); a plurality of cylinders (33) disposed within the cylinder block; a plurality of pistons (20), each reciprocatingly disposed in a respective one of the cylinders; a rotatable drive shaft (7) supported on the cylindrical casing; a rotor (10) mounted on and rotatable with the drive shaft, and having an inclined plate, the angle of which relatively to the drive shaft is variable by the variable capacity mechanism; a wobble plate (15) coupled to the pistons and being arranged to nutate in response to rotation of the rotor to reciprocate the pistons, the wobble plate being disposed on the inclined plate of the rotor; characterised in that the variable capacity mechanism includes a passageway (64,62,65) interconnecting the crank chamber (32) and a suction chamber (53); a valve element (631,101) to control the opening and closing of the passageway, and a control device (63,100) to control the operation of the valve element, the control device having a pressure detecting element (63,110) responsive to the pressure in the crank chamber and being arranged to control the valve element to maintain the pressure in the crank chamber substantially as a predetermined level as a result of comparing the crank chamber pressure with a predetermined value.
Claim 2
Dependent Claim
228 words
A wobble plate type compressor with a variable capacity mechanism, the compressor comprising a cylindrical casing (3) including a cylinder block (31) and a crank chamber (32); a plurality of cylinders (33) disposed within the cylinder block; a plurality of pistons (20), each reciprocatingly disposed in a respective one of the cylinders; a rotatable drive shaft (7) supported on the cylindrical casing; a rotor (10) mounted on and rotatable with the drive shaft, and having an inclined plate, the angle of which relatively to the drive shaft is variable by the variable capacity mechanism; a wobble plate (15) coupled to the pistons and being arranged to nutate in response to rotation of the rotor to reciprocate the pistons, the wobble plate being disposed on the inclined plate of the rotor; characterised in that the variable capacity mechanism includes a passageway (64,62,65) interconnecting the crank chamber (32) and a suction chamber (53); a valve element (631,101) to control the opening and closing of the passageway, and a control device (63,100) to control the operation of the valve element, the control device having a pressure detecting element (63,110) responsive to the pressure in the crank chamber and being arranged to control the valve element to maintain the pressure in the crank chamber substantially as a predetermined level as a result of comparing the crank chamber pressure with a predetermined value.
Claim 3
Dependent Claim
43 words
A compressor according to claim 1, wherein one end of the casing (3) is closed by a valve plate (4) and cylinder head (5), the suction chamber (53) being formed in the cylinder head and the passageway (64) extending through the valve plate.
Claim 4
Dependent Claim
30 words
3 . A compressor according to claim 1 or claim 2, wherein the passageway (62,65) extends through the casing (3) and the valve element (631,101) is disposed in the passageway.
Claim 5
Dependent Claim
60 words
4 . A compressor according to claim 3, wherein the passageway comprises a cylindrical bore (62) formed in the cylinder block (31), a first passage (65) interconnecting the crank chamber (32) and the bore (62) and a second passage (64) interconnecting the bore (62) and the suction chamber (52); the valve element (631,101) being disposed in the cylindrical bore (62).
Claim 6
Dependent Claim
40 words
A compressor according to claim 4, wherein the pressure detecting element comprises a bellows (63), and the valve element (631) is attached on one end portion of the bellows to control the opening and closing of the second passage (64).
Claim 7
Dependent Claim
31 words
A compressor according to claim 4, wherein the valve element comprises an electromagnetic valve (101), and the pressure detecting device is a pressure sensor (10) disposed in the first passage (65).
References Cited (Backward Citations)
No citation records indexed.
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