Lg Electronics Inc.

Other

Nara Han

Jeonghun Kim

Changeol Jo

Juhwan Yun

Jihoon Park

Kiuk Lee

Junghoon Park

Suchul Kim

Sungsoon Jang

Byeongchul Lee

Cheol Hwan Kim

Honggyun Jin

Kiwon Park

Hae Jin Park

Jun Ha Park

Yong Kyu Choi

Munyoung Lee

Sangjin Oh

Mose Kang

Kidae Kwon

A scroll compressor is disclosed. The scroll compressor has back pressure holes which are formed in a non-orbiting scroll and a back pressure chamber assembly, and provide communication between a compression chamber and a back pressure chamber. In addition, a back pressure valve is provided inside of the back pressure hole to change a passage area of the back pressure hole by moving along a longitudinal direction of the back pressure hole due to a pressure difference between the compression chamber and the back pressure chamber. Due to the back pressure valve, pressure pulsation in the back pressure chamber may be improved.

Scroll compressor

A scroll compressor is provided that may include a block insertion groove to accommodate a discharge port and at least one bypass hole disposed in a rear surface of a non-orbiting end plate of a non-orbiting scroll, and a retainer block including at least one bypass valve to open or close the bypass hole inserted into the block insertion groove. The bypass hole may include a first bypass hole and a second bypass hole. The bypass valve may include a first bypass valve to open or close the first bypass hole and a second bypass valve to open or close the second bypass hole, and may be disposed between the block insertion groove and the retainer block facing the block insertion groove. Accordingly, the first and second bypass valves are not fastened to the non-orbiting end plate, which may allow the non-orbiting end plate to be made thin.

Retainer block bypass hole valve assembly arranged in non-orbiting scroll of a compressor

A scroll compressor is disclosed. The scroll compressor may include a back pressure hole formed through a non-orbiting scroll and a back pressure chamber assembly such that a compression chamber and a back pressure chamber communicate with each other. A back pressure valve may be disposed inside of the back pressure hole and move along a longitudinal direction of the back pressure hole by a pressure difference between the compression chamber and the back pressure chamber, to vary a flow path area of the back pressure hole. The back pressure valve may include a valve body that extends in an axial direction and a plurality of holes formed through the valve body in the axial direction. With the configuration, pressure pulsation in the back pressure chamber may be suppressed or prevented.

A scroll compressor is provided, the scroll compressor having a block insertion groove recessed by a predetermined depth into a rear surface of a non-orbiting scroll to accommodate a discharge port and a plurality of bypass holes, and a retainer block having a bypass valve that opens and closes the plurality of bypass holes fixedly inserted into the block insertion groove. The bypass valve may be fixed to a first axial side surface of the retainer block facing the block insertion groove. Through this, the bypass valve that suppresses or prevents overcompression of a compression chamber is not fastened to a non-orbiting end plate, which may allow the non-orbiting end plate to be reduced in thickness. This may shorten lengths of the plurality of bypass holes and the discharge port by the reduced thickness of the non-orbiting end plate, thereby decreasing a dead volume in the plurality of bypass holes and the discharge port.

Scroll compressor having at least one valve fixedly inserted into block insertion groove of non-orbiting scroll

A scroll compressor is provided. In the scroll compressor, a valve accommodating groove that accommodates a discharge port and bypass holes is recessed by a predetermined depth into a rear surface of a non-orbiting scroll, and a valve guide is disposed between the rear surface of the non-orbiting scroll and a rear surface of the back pressure chamber assembly facing the rear surface of the non-orbiting scroll. Bypass valve guide holes into which bypass valves that open and close the bypass holes are slidably inserted are formed in the valve guide. Accordingly, the bypass valves that suppress or prevent overcompression in compression chambers are not fastened to a non-orbiting end plate, which may allow the non-orbiting end plate to be reduced in thickness. As the non-orbiting end plate is reduced in thickness, lengths of the bypass holes may be reduced, thereby decreasing dead volumes in the bypass holes.

A scroll compressor may include a block insertion groove recessed by a predetermined depth into a rear surface of a non-orbiting scroll to accommodate a discharge port and at least one bypass hole, and a retainer block having at least one bypass valve to open and close the at least one bypass hole may be fixedly inserted into the block insertion groove. Accordingly, the at least one bypass valve that suppresses or prevents overcompression in a compression chamber is not fastened to a non-orbiting end plate, which may allow the non-orbiting end plate to be formed thin. As the non-orbiting end plate is reduced in thickness, a length of the at least one bypass hole may be reduced, thereby decreasing a dead volume in the at least one bypass hole.

A scroll compressor is provided that may include a casing, a drive motor, an orbiting scroll, a non-orbiting scroll, and a floating plate provided with a cover portion to cover an area between an outer wall portion and an inner wall portion of the non-orbiting scroll so as to form a back pressure chamber with the non-orbiting scroll, and a valve accommodating portion that extends from the cover portion so as to accommodate a discharge valve configured to open and close a discharge port. Accordingly, structure for forming a back pressure chamber is simplified to thereby reduce the number of components and man-hours required for assembly.

A compressor may include a casing; an electric motor provided in the casing and that operates a rotational shaft; and a compression device. A flow path guide may be installed between the electric motor and the compression device, and may separate a refrigerant flow path from an oil flow path. The flow path guide may have a first partition wall and a second partition wall which are spaced apart from each other. In addition, the flow path guide may have an oil discharge port formed in at least a section of the flow path guide along a circumferential direction thereof, the oil discharge port allowing a guide space between the first partition wall and the second partition wall to be open toward the inner surface of the casing.

Compressor with flow path guide that separates a refrigerant flow path from an oil flow path

A compressor is provided having an integrated flow path structure in which an oil flow path and an intermediate pressure flow path are integrated into one in a compression unit, thereby simplifying a flow path of the compression unit. The compressor may include at least one integrated flow path in which the oil flow path and the refrigerant gas flow are integrated into one in a fixed scroll. The at least one integrated flow path may connect an intermediate pressure chamber and a compression chamber in a compressors unit. The at least one integrated flow path may provide a compressed refrigerant in the compression chamber to the intermediate pressure chamber and provide oil in the intermediate pressure chamber to the compression chamber, simplifying the flow path of the compression unit.

Compressor having integrated flow path structure

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.

A scroll compressor and a method for assembling a scroll compressor are provided. The scroll compressor may include a casing including a rotational shaft, a main frame coupled to an inside of the casing, a first scroll that revolves due to rotation of the rotational shaft, the first scroll being supported by the main frame, and 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 may include a head plate including a wrap, and at least one coupling guide that extends from the head plate. The at least one coupling guide may include a first reference pin coupling hole, into which a reference pin may be inserted, and a guide hole, into which a coupling member may be inserted.

Scroll compressor and method for assembling a scroll compressor

A compressor having a lower frame and a method of manufacturing the same are disclosed. The compressor may include a cylindrical shell, a rotational shaft rotatably mounted in the cylindrical shell, a rotor and a stator that rotates the rotational shaft, a compression device driven by the rotational shaft, a lower bearing configured to rotatably support one side of the rotational shaft, a lower frame configured to support the lower bearing, the lower frame being configured to be press-fitted into a lower end portion of the cylindrical shell, and a base configured to seal the lower end portion of the cylindrical shell. The lower frame may include a main body configured to be press-fitted onto an inner circumferential surface of the cylindrical shell and a flange that extends from the main body, the flange being configured to limit a press-fit depth by contacting the lower end portion of the cylindrical shell.

Compressor having a lower frame and a method of manufacturing the same

A scroll compressor is provided, in which at least one bypass hole that bypass a portion of a refrigerant before the refrigerant is discharged through a discharge hole is formed at a position where a bypass section that bypasses the refrigerant through the at least one bypass hole overlaps a discharge section that discharges the refrigerant through the discharge hole. The at least one bypass hole is formed at a position where a wrap volume ratio (Vs/Vd), which is a ratio of a suction volume (Vs) with respect to a discharge volume (Vd) in a compression chamber, is within the range of about 1.8&#x2dc;2.2. With this configuration, over-compression of refrigerant may be prevented in a low speed driving mode, and efficiency of the compressor may be enhanced in the low speed driving mode and under a low load condition.

Scroll compressor having at least one bypass hole

In a scroll compressor, a pass hole is formed at a position overlapping with a discharge sector of a discharge hole, where a sector for passing a refrigerant through the pass hole is overlapped with a sector for discharging the refrigerant through a discharge hole. This may prevent over-compression of a refrigerant when the scroll compressor is driven at a low speed. This may enhance efficiency of the scroll compressor in a low speed driving mode and under a low load condition.

Growing community of inventors

Seoul, South Korea

Nara Han