A scroll compressor includes an orbiting bedplate. The orbiting bedplate has: an oil passage through which oil supplied from an oil supply passage flows outward in a radial direction of the orbiting bedplate; a lap-side oil supply hole that causes the oil passage to communicate with a lap-formation surface of the orbiting lap at which the orbiting lap is formed; and a thrust-surface-side oil supply hole that causes the oil passage to communicate with a thrust surface of the orbiting bedplate that is opposite to the lap-formation surface of the orbiting bedplate. In the oil passage, an opening and closing mechanism is provided. The opening and closing mechanism closes the thrust-surface-side oil supply hole when the pressure of oil that is drawn from an oil sump by an oil pump and supplied into the oil passage is low, and opens the thrust-surface-side oil supply hole when the pressure of the oil is high.

A compressor includes a casing that stores a lubrication oil in a bottom portion, a compression mechanism disposed in the casing, an electric motor disposed above the compression mechanism, a discharge pipe opening in a space in the casing on an upper side of the motor, and an oil drainage mechanism that guides a lubrication oil adhering to an inner wall of the casing to the discharge pipe using a swirling flow generated by rotation of the motor. The oil drainage mechanism includes an oil drain pipe having one end opening in the inner wall of the casing and another end connected to the discharge pipe, and a flow-rate regulating valve disposed at the oil drain pipe. The flow-rate regulating valve has a changeable opening degree. The opening degree of the flow-rate regulating valve is configured to be regulated in accordance with a rotational speed of the motor.

The scroll compressor includes a fixed scroll; an orbiting scroll (8); a drive shaft (16); a support arrangement (5) 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, the rotation preventing device including orbital discs (28) respectively arranged in circular receiving holes (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 hole (29); and a lubrication system configured to lubricate the inner and outer circumferential bearing surfaces (32, 31) with oil supplied from an oil sump, the lubrication system including an oil reservoir (38) in which part of the oil supplied to the lubrication system is collected during operation of the scroll compressor, and a plurality of lubrication passages (41) provided on the support arrangement (5), each lubrication passage (41) including an oil outlet aperture (41.2) emerging in a bottom surface of a respective circular receiving hole (29) and an oil inlet aperture (41.1) emerging in the receiving chamber (27).

A scroll compressor includes a drive shaft that has a first oil flow passage extending axially on a shaft center of a main shaft and having an inflow hole opening in an upper end surface of an eccentric shaft, and a second oil flow passage extending axially at a periphery of the first oil flow passage and having an annular cross-section. The second oil flow passage forms at least part of an oil supply path in which oil that has been transported by the pump is supplied to at least a sliding portion between a boss portion and the eccentric shaft. A third oil flow passage is formed in which oil that has flowed out from the sliding portion to the chamber is sent to the inflow hole of the first oil flow passage. The first oil flow passage forms at least part of an oil drainage path.

A compressor includes first and second scroll members and a bearing housing. The first scroll member includes a first end plate and a first scroll wrap. The second scroll member includes a second end plate that has a first surface, a second surface, and an oil passage. The first surface has a second scroll wrap meshingly engaging the first scroll wrap. The second surface includes an oil slot. The oil passage is in fluid communication with the oil slot. The bearing housing cooperates with the second scroll member to define an interior volume. The second scroll member is movable between a first position in which lubricant in the interior volume is allowed to flow into the oil passage via the oil slot, and a second position in which working fluid in the chamber is allowed to flow into the oil passage via the oil slot.

A compressor includes a container provided with an oil reservoir which is provided at a bottom portion of the container to allow oil to be collected in the oil reservoir. In the container, an electric motor mechanism, a rotary shaft, a compression mechanism, and a frame which fixes the compression mechanism to the container are provided. In the frame, a suction port is formed to cause refrigerant having flowed into the space to flow into the compression mechanism, and each of a suction portion and a connection port of the suction pipe, is located at a position which is higher than or the same as the level of the rotary shaft as seen in a rotation axial direction A rib in a first flow passage extends downwards in the direction of gravity from the connection port, extends through an area located above the oil reservoir, and reaches the suction port.

A compressor including fixed scroll and revolving scroll configuring compression mechanism, compression chamber formed between fixed scroll and revolving scroll, intake chamber provided on an outer circumferential side of fixed scroll, discharge port provided in a central part of fixed scroll, muffler provided to cover discharge port at an upper part of fixed scroll, and heat-insulating member provided between fixed scroll and muffler space formed by muffler. After a refrigerant gas taken into intake chamber is compressed by revolving scroll revolving and compression chamber moving while changing a volume of compression chamber, the refrigerant gas is discharged from discharge port. The refrigerant gas discharged from discharge port is discharged into muffler space.

A compressor is provided that may include a passage separator provided between an electric motor drive and a compression device to separate a refrigerant passage from an oil passage. The passage separator may include a first partition wall and a second partition wall. The first partition wall may be disposed between an inner circumferential surface of a casing and a discharge hole of the compression device, and the second partition wall may be disposed between the discharge hole and a balance weight. Accordingly, the refrigerant passage may be separated from the oil passage between the compression device and electric motor drive, thereby efficiently recovering oil to an oil storage space.

This disclosure describes new horizontal roller-piston/vane type rotary compressors with novel features such as new lubricating oil circuit designs to provide reliable oil lubrication, and increase tiltability during operation. Also new multi-pump configurations of horizontal compressors are introduced in order to significantly increase redundancy, reliability, and turn down ratio. Rotary compressors may be configured with subsets of the disclosed features to configure those compressors for specific applications.

A climate control system includes a compressor which includes a compressor housing, a compressor element provided in the compressor housing, a lubricant circuit, and an auxiliary sump. The lubricant circuit includes a lubricant sump provided in the compressor housing. The auxiliary sump is in fluid communication with the lubricant sump. A method for maintaining lubrication supply for a compressor of a climate control system includes transferring lubricant from the auxiliary sump to the lubricant sump of the compressor when a height of the lubricant in the auxiliary sump is greater than a height in the lubricant sump and returning the lubricant from the lubricant sump to the auxiliary sump when a height of the lubricant in the lubricant sump is higher than a height of a predetermined minimum level in the lubricant sump. The lubricant in the auxiliary sump and lubricant sump are equalized by gravity.