Provided is a scroll compressor with enhanced sealing structure of a back pressure chamber. The scroll compressor includes a housing, a fixed scroll fixed to inside of the housing and including a fixed wrap, an orbit scroll including an orbit wrap which forms a compression chamber together with the fixed wrap, a back pressure chamber formed at a frame supporting the orbit scroll, and accommodating refrigerant for pressurizing the orbit scroll to a direction of the fixed scroll, and a sealing ring arranged between the fixed scroll and the orbit scroll to prevent the refrigerant in the back pressure chamber from flowing in or out through a gap between the fixed scroll and the orbit scroll, wherein the sealing ring includes a cut portion cut for the sealing ring to be deformable in a circumferential direction.

A flexible coupling device for a spinning or co-rotating scroll device and associated systems and methods are provided. The coupling device may be configured to couple a first scroll and a second scroll of a co-rotating scroll device. Further, a first scroll shaft of the first scroll and a second scroll shaft of the second scroll are maintained in parallel misalignment by the coupling device. The coupling device may comprise a coupling ring and a plurality of connecting members extending from the coupling ring. Each connecting member includes a flexure arm configured to elastically move or flex between a first flexed position and a second flexed position which contributes to maintaining the parallel misalignment between the first scroll shaft and the second scroll shaft.

Provided is a scroll compressor. The scroll compressor may be provided with at least one refrigerant accommodating groove recessed to a preset depth in at least one from a side surface of a fixed wrap constituting a compression chamber and a side surface of an orbiting wrap. Thus, a volume of the compression chamber in a discharge area may be increased in correspondence with a volume of the at least one refrigerant accommodating groove, and a space into which liquid refrigerant, etc. may escape may be ensured to resolve excessive compression in the compression chamber. Then, a stress exerted on the fixed wrap is reduced, and a damage to the fixed wrap due to pressure in the compression chamber may be suppressed.

A scroll pump includes a first scroll member and a second scroll member. An electromagnet is fixedly connected to one of the first scroll member and a second scroll member, and a magnetic target is fixedly connected to the other of the first scroll member and the second scroll member. The electromagnet is operable to generate a magnetic field between the electromagnet and the magnetic target, thereby establishing an axially-directed magnetic biasing force between the first scroll member and the second scroll member.

A heat source unit of a refrigerant cycle apparatus includes a compressor, a pipe, and a fixing member. The compressor includes two or three connection portions of a first connection portion connecting a suction pipe, a second connection portion connecting a discharge pipe, and a third connection portion connecting an injection pipe. The pipe includes a vertical portion. At least a part of the vertical portion extends vertically from each of the two or three connection portions. The fixing member fixes at least two of the vertical portions of two or three of the pipes of the suction pipe, the discharge pipe, and the injection pipe. Each of the connection portions of the pipes fixed by the fixing member is located on a first straight line as seen in a top view.

A scroll compressor is disclosed. The scroll compressor may include an oil supply hole penetrating from an oil passage to an outer circumferential surface of a rotating shaft, and an oil supply groove communicating with the oil supply hole and formed along the outer circumferential surface of the rotating shaft. The oil supply groove may be provided in plurality axially spaced apart by a preset distance. This can prevent the oil supply groove from invading an oil film section and increase centrifugal force against oil in the oil supply groove, thereby suppressing friction loss and wear between a main frame and the rotating shaft.

A scroll compressor includes a compressor housing, an orbiting scroll member and non-orbiting scroll member intermeshed to form a compression chamber, a discharge pressure chamber, an intermediate pressure chamber. The housing includes a lower portion, a first intermediate cap, a second intermediate cap, and an upper portion. The discharge pressure chamber configured to receiving a discharge pressure fluid from the compression chamber. The intermediate pressure chamber fluidly connecting an intermediate pressure fluid inlet port and an intermediate pressure fluid injection port of the non-orbiting scroll member. A method injecting an intermediate pressure fluid into a compression chamber of a scroll compressor includes disposing the intermediate pressure fluid in an intermediate pressure chamber. The method also includes injecting the intermediate pressure fluid in the intermediate pressure chamber through the intermediate pressure fluid injection port into the compression chamber.

The scroll compressor (1) includes a fixed scroll (7); an orbiting scroll (8); a support arrangement (5) including a thrust bearing surface (9) on which is slidably mounted the orbiting scroll (8); a rotation preventing device configured to prevent rotation of the orbiting scroll (8) with respect to the fixed scroll (7), the rotation preventing device including a plurality of orbital discs (28) respectively rotatably mounted in circular receiving cavities (29) provided on the support arrangement (5), each orbital disc (28) being provided with an outer circumferential bearing surface (31) configured to cooperate with an inner circumferential bearing surface (32) provided on the respective circular receiving cavity (29); and a lubrication system configured to lubricate the inner and outer circumferential bearing surfaces (32, 31) with oil supplied from an oil sump (36), the lubrication system including a plurality of oil reservoirs (43) each arranged in a bottom surface of a respective circular receiving cavity, and a plurality of oil stirring arrangements each configured to stir oil contained in a respective oil reservoir (43).

A scroll fluid machine includes a main body and a motor unit. The main body unit configured to compress a fluid. The motor unit configured to drive the main body unit. The main body unit and the motor unit are connected via the eccentric portion. The main body casing and the motor cover are fastened with a fastening member. The motor unit includes a main bearing that is fixed to an inside of the motor cover by a flange. The main bearing is configured to support the shaft and is located between the flange and an end bracket on an opposite side of the main body unit with respect to the flange.

The scroll compressor (1) includes a hermetic casing (2); an electric motor (12) arranged within the hermetic casing (2); an electrical box (14) attached to an outer surface of the hermetic casing (2); and compressor power terminals (13) insulated from the hermetic casing (2) and electrically connected to the electric motor (12), the compressor power terminals (13) protruding in the electrical box (14), the electrical box (14)] containing a control module (15) configured to control the electric motor (12), control wires (16) connected to the control module (15), and a terminal block assembly (17) configured to electrically connect the compressor power terminals (13) and the control wires (16) to external power leads (18) of an external power source. The terminal block assembly (17) includes a body part (19) and a wire guiding part (21) which is configured to guide and position the control wires (16) in predetermined connection positions with respect to the body part (19).