Patent application number | Description | Published |
20140271302 | SCROLL COMPRESSOR WITH A BYPASS - An upper back pressure type scroll compressor having a bypass is provided. The scroll compressor may include a casing, a discharge cover, a main frame, a first scroll supported by the main frame, and a second scroll that forms a suction chamber, an intermediate pressure chamber, and a discharge chamber together with the first scroll. The second scroll may include a bypass hole that communicates with the intermediate pressure chamber. The scroll compressor may also include a back pressure chamber assembly coupled to an upper portion of the second scroll by a fastening device and a bypass valve to open and close the bypass hole. The back pressure chamber assembly may include a discharge path by which the discharge chamber and the discharge space may communicate with each other and a bypass valve to open and close the bypass hole. | 09-18-2014 |
20140271304 | SCROLL COMPRESSOR WITH BACK PRESSURE CHAMBER - An upper back pressure type scroll compressor is provided having a back pressure chamber. The scroll compressor may include a casing, a discharge cover, a main frame, a first scroll supported by the main frame, and a second scroll forming a suction chamber, an intermediate pressure chamber, and a discharge chamber together with the first scroll. The scroll compressor may also include a back pressure plate coupled to the second scroll. The back pressure plate may include a cavity with which the intermediate pressure chamber of the second scroll communicates. The scroll compressor may further include a floating plate movably coupled to the back pressure plate so as to seal an upper portion of the cavity. | 09-18-2014 |
20140271306 | SCROLL COMPRESSOR WITH BACK PRESSURE DISCHARGE - A scroll compressor having a back pressure discharge is provided. The scroll compressor may include a casing, a discharge cover, a main frame, a first scroll supported by the main frame, and a second scroll forming at least a discharge chamber together with the first scroll. The second scroll may include a discharge opening through which an operation fluid may be discharged. The scroll compressor may also include a back pressure chamber assembly fastened to the second scroll with a Efastener, a back pressure discharge opening that communicates with the back pressure chamber, and a discharge path by which the discharge chamber and the discharge space communicate with each other. The scroll compressor may further include a check valve disposed at the back pressure discharge opening to prevent the operation fluid from being introduced into the back pressure chamber. | 09-18-2014 |
20140271307 | SCROLL COMPRESSOR HAVING A SCROLL SUPPORTER AND/OR MOVEMENT LIMITER - A scroll compressor having a scroll supporter and/or movement limiter is provided. The scroll compressor may include a casing, a main frame fixedly installed within the casing, a first scroll rotatably supported by the main frame, a second scroll supported by the main frame, such that the second scroll is movable in a vertical direction with respect to the first scroll, a guide that guides movement of the second scroll in the vertical direction, while preventing the second scroll from being rotated in an axial direction; and a movement limiter disposed on an inner wall of the casing and separated from the second scroll, the movement limiter being configured to limit a movement distance of the second scroll in an upward direction. | 09-18-2014 |
20150233375 | SCROLL COMPRESSOR - A scroll compressor is provided. The scroll compressor may include a casing including a rotational shaft, a discharge cover fixed at an inside of the casing to partition the inside of the casing into a suction space and a discharge space, a first scroll rotated by the rotational shaft to perform an orbiting motion, a second scroll disposed on or at a side of the first scroll to define a plurality of compression chambers together with the first scroll, the second scroll having an intermediate pressure discharge hole that communicates with a compression chamber having an intermediate pressure among the plurality of compression chambers, a back pressure plate coupled to the second scroll, the back pressure plate having an intermediate pressure suction hole that communicates with the intermediate pressure discharge hole, a floating plate movably disposed on or at a side of the back pressure plate to define a back pressure chamber together with the back pressure plate, and a discharge guide defined in the first scroll or the second scroll to guide discharge of a refrigerant within the back pressure chamber. | 08-20-2015 |
20150316054 | SCROLL COMPRESSOR - The scroll compressor is provided that may include a casing including a rotational shaft; a discharge cover fixed inside of the casing to partition the inside of the casing into a suction space and a discharge space; a back pressure plate that defines a back pressure chamber that accommodates a refrigerant, a floating plate to define the back pressure chamber together with the back pressure plate, the floating plate including a contact or rib capable of contacting the discharge cover, and a coating layer that defines an outer surface of the contact. The discharge cover may have a first hardness value, the floating plate may have a second hardness value, and the coating layer may have a third hardness value. The third hardness value may be less than the first hardness value and greater than the second hardness value. | 11-05-2015 |
20150316055 | SCROLL COMPRESSOR - A scroll compressor is provided that may include a casing including a rotational shaft, a discharge cover fixed inside of the casing to partition the inside of the casing into a suction space and a discharge space, a first scroll that is revolved by rotation of the rotational shaft, a second scroll that defines a plurality of compression chambers together with the first scroll, the second scroll having an intermediate pressure discharge hole that communicates with a compression chamber having an intermediate pressure of the plurality of compression chambers, a back pressure plate that defines a back pressure chamber that accommodates a refrigerant discharged from the intermediate pressure discharge hole, a floating plate movably disposed on or at a side of the back pressure plate to define the back pressure chamber together with the back pressure plate, and an elastic member disposed between the floating plate and the discharge cover to provide an elastic force to the floating plate. | 11-05-2015 |
20150316057 | SCROLL COMPRESSOR - A scroll compressor is provided that may include a casing including a rotational shaft, a cover fixed inside of the casing to partition the inside of the casing into a suction space and a discharge space, a first scroll revolved by rotation of the rotational shaft, a second scroll disposed on or at one side of the first scroll to define a compression chamber together with the first scroll, the second scroll including a discharge, through which a refrigerant pressed in the compression chamber may be discharged, a switching device movably disposed on or at one side of the discharge to selectively open and close the discharge, a back pressure portion including a moving guide that accommodates at least a portion of the switching device, and a top surface that covers one side of the switching device; and an adhesion preventer that reduces a contact area between the switching device and at least a portion of the back pressure portion. | 11-05-2015 |
20150316058 | SCROLL COMPRESSOR - A scroll compressor is provided that may include a first scroll, a second scroll that defines a plurality of compression chambers together with the first scroll, the second scroll having a discharge hole that communicates with a compression chamber among the plurality of compression chambers, a back pressure plate that defines a back pressure chamber to accommodate a refrigerant discharged from the discharge hole, a floating plate to define the back pressure chamber, and a sealing member to prevent the refrigerant from flowing between a first surface, which may be a sliding surface of the floating plate, and a second surface, which may face the first surface, of the back pressure plate. The sealing member may include a seal cover that contacts the other one of the first and second surfaces, and a seal, a portion of which may be accommodated in the seal cover. The seal cover may have a friction coefficient less than a friction coefficient of the seal. | 11-05-2015 |