-
公开(公告)号：AU2003212781A1
公开(公告)日：2003-09-02
申请号：AU2003212781
申请日：2003-01-28
Applicant: BRISTOL COMPRESSORS
Inventor： GOODNIGHT TOM EVANS , NARNEY JOHN K II , XIN RONGCHANG , LOPRETE JOE FRANK , CHUMLEY EUGENE KARL , HATZIKAZAKIS PANTELEIMON V , HUGUES ROBERT DESMOND , TRENT MARK RANDALL , SIMERLY TYRONE SCOTT , MONK DAVID T
IPC: F04B1/00 , F04B19/24 , F04B23/00 , F04B39/00 , F04B49/00 , F04B49/16 , F04B49/24 , F04C20060101 , F04C18/356 , F04C28/16 , F04C28/18 , F04C28/24 , F25B49/02 , F25B1/00
Abstract: A compressor for providing automatic capacity modulation is disclosed. The compressor comprises a compression chamber, a compressing member, a reexpansion area, a flow passage, a valve member, and a biasing member. The flow passage is in fluid communication with the compression chamber and the reexpansion area. In one position, the valve member permits flow through the flow passage and in a second position it prevents flow. The valve member is subjected to a first operating condition of fluid on one side and a second operating condition of the fluid on the other side. The biasing member exerts a biasing force on the valve member. When the first operating condition reaches a predetermined point relative to the second operating condition, the valve member moves and effects a change in the capacity of the compressor.
-
公开(公告)号：AU2002309573A1
公开(公告)日：2002-12-23
申请号：AU2002309573
申请日：2002-06-10
Applicant: BRISTOL COMPRESSORS
Inventor： MONK DAVID T , LOPRETE JOSEPH F , NARNEY JOHN KENNETH II
IPC: F04B1/00 , F04B19/24 , F04B23/00 , F04B39/00 , F04B49/00 , F04C20060101 , F04C18/356 , F04C28/16 , F04C29/10
Abstract: A compressor with a capacity modulation system includes a compression chamber, a rotatable shaft within the compression chamber, and a roller mounted on the shaft in contact with a wall of the compression chamber. A suction channel is in fluid communication with the compression chamber for providing fluid at a suction pressure and a discharge channel is in fluid communication with the compression chamber for removing fluid at a discharge pressure. A re-expansion channel adjacent to the compression chamber has a first end forming a re-expansion port in the wall of the compression chamber. A re-expansion chamber is connected to the re-expansion channel. A valve disposed in the re-expansion channel is movable between a first position, in which the valve allows fluid communication between the compression chamber and the re-expansion chamber, and a second position, in which the valve prevents fluid communication between the compression chamber and re-expansion chamber.
-
Patent Agency Ranking
公开(公告)号：BR9811903A
公开(公告)日：2000-08-15
申请号：BR9811903
申请日：1998-08-13
Applicant: BRISTOL COMPRESSORS
Inventor： LOPRETE JOSEPH F , YOUNG MICHAEL R , TOLBERT JOHN W JR , MONK DAVID T , WAGNER PHILIP C , HILL JOE T , PIPPIN LARRY , PETERS ROBERT B
Abstract: A stabilizing structure for a throw adjusting eccentric cam in a two-stage reciprocating compressor is provided. The compressor includes a block that has at least one cylinder with an associated compression chamber and piston, a crankshaft that includes an eccentric crankpin, and a reversible motor for rotating the crankshaft in a forward and a reverse direction. An eccentric, two position cam is rotatably mounted over the crankpin. The cam rotates to and operates at a first position relative to said crankpin when the motor is running in the forward direction and rotates to and operates at a second position relative to said crankpin when the motor is running in the reverse direction. The combined eccentricities of the crankpin and the cam cause the piston to have a first stroke when the motor operates in the forward direction and a second stroke when the motor operates in the reverse direction. There is also provided a control for selectively operating the motor either in the forward direction or in the reverse direction.
-
公开(公告)号：AU2471299A
公开(公告)日：1999-08-09
申请号：AU2471299
申请日：1999-01-26
Applicant: BRISTOL COMPRESSORS
Inventor： MONK DAVID T , HILL JOE T , WAGNER PHILLIP C , LOPRETE JOSEPH F , YOUNG MICHAEL R , SINGLETARY CHARLES A
Abstract: For a refrigerant compressor having two capacities, a camming structure operable in different manners depending on direction of crankshaft rotation, to achieve each capacity while providing top dead center piston operation thru the use of a circular cam bushing which is eccentrically, rotatably mounted on the crankshaft eccentric and within the connecting rod bearing wherein the combined eccentricities of the bushing and the eccentric equal the primary stroke of the piston. A first stop mechanism is provided for stabilizing the bushing on the eccentric upon rotation of the crankshaft in one direction whereby the eccentricities of the eccentric and bushing become aligned and remain so during synchronous rotational orbiting motion of the eccentric and bushing during rotation of the crankshaft for producing full stroke and full capacity. A second stop mechanism is provided for stabilizing the bushing within the bearing upon opposite rotation of the crankshaft whereby the bushing eccentricity becomes and remains substantially aligned with the connecting rod stroke axis while the eccentric moves alone thru its rotational orbit for producing reduced stroke and reduced capacity. A unique electrical control system is also provided for a reversible electric induction motor for selectively and efficiently driving the compressor crankshaft in either direction for providing the different capacities.
-
公开(公告)号：BR9907750A
公开(公告)日：2001-09-04
申请号：BR9907750
申请日：1999-01-26
Applicant: BRISTOL COMPRESSORS
Inventor： MONK DAVID T , HILL JOE T , WAGNER PHILLIP C , LOPRETE JOSEPH F , YOUNG MICHAEL R , SINGLETARY CHARLES A
Abstract: For a refrigerant compressor having two capacities, a camming structure operable in different manners depending on direction of crankshaft rotation, to achieve each capacity while providing top dead center piston operation thru the use of a circular cam bushing which is eccentrically, rotatably mounted on the crankshaft eccentric and within the connecting rod bearing wherein the combined eccentricities of the bushing and the eccentric equal the primary stroke of the piston. A first stop mechanism is provided for stabilizing the bushing on the eccentric upon rotation of the crankshaft in one direction whereby the eccentricities of the eccentric and bushing become aligned and remain so during synchronous rotational orbiting motion of the eccentric and bushing during rotation of the crankshaft for producing full stroke and full capacity. A second stop mechanism is provided for stabilizing the bushing within the bearing upon opposite rotation of the crankshaft whereby the bushing eccentricity becomes and remains substantially aligned with the connecting rod stroke axis while the eccentric moves alone thru its rotational orbit for producing reduced stroke and reduced capacity. A unique electrical control system is also provided for a reversible electric induction motor for selectively and efficiently driving the compressor crankshaft in either direction for providing the different capacities.
-
公开(公告)号：DE19983505T1
公开(公告)日：2001-07-12
申请号：DE19983505
申请日：1999-04-29
Applicant: BRISTOL COMPRESSORS
Inventor： TOLBERT JUN JOHN W , YOUNG MICHAEL R , MONK DAVID T , LOPRETE JOSEPH F
Abstract: An electrical control system for an induction motor for achieving optimum efficiency at both full and partial loads at markedly reduced electrical components costs while maximizing reliability over the range of load, and for achieving a two step motor power output in a greatly simplified manner, the circuit having an electrical induction motor adapted for connection to line electrical power at maximum motor operating frequency, and to a second source of electrical power at approximately one half of the maximum operating frequency, wherein an electrical switch is provided for selectively connecting each power source to the motor, wherein the second source is a reduced frequency wave form generator for producing a reduced frequency wave form.
-
公开(公告)号：BR9913015A
公开(公告)日：2001-05-08
申请号：BR9913015
申请日：1999-04-29
Applicant: BRISTOL COMPRESSORS
Inventor： TOLBERT JOHN W JR , YOUNG MICHAEL R , MONK DAVID T , LOPRETE JOSEPH F
Abstract: An electrical control system for an induction motor for achieving optimum efficiency at both full and partial loads at markedly reduced electrical components costs while maximizing reliability over the range of load, and for achieving a two step motor power output in a greatly simplified manner, the circuit having an electrical induction motor adapted for connection to line electrical power at maximum motor operating frequency, and to a second source of electrical power at approximately one half of the maximum operating frequency, wherein an electrical switch is provided for selectively connecting each power source to the motor, wherein the second source is a reduced frequency wave form generator for producing a reduced frequency wave form.
-
-
-
-
-
-
Search Results
17
records
(took 0.021 seconds)
