In some examples, a scroll compressor may include an orbiting scroll and a fixed scroll having spiral involutes intermeshed together. A slider block may be disposed on the eccentric portion of a main shaft and the slider block may be attached to a compliant counterweight. The counterweight may be supported by a counterweight guide plate that is supported by the main shaft. The counterweight guide plate may also have an arm securing a top portion of the counterweight thereby securing the slider block. In some implementations, a spring assembly may be provided between an outer edge of the counterweight and the counterweight guide plate. These components may, in part, allow for a constant involute contact between the fixed scroll and orbiting scroll involutes at high speeds thereby achieving high compression efficiency.

A compressor for compressing a refrigerant is described. The compressor comprises a case having at least one curved portion and at least one opening, wherein the opening is located in the at least one curved portion, an electrical terminal arranged within the at least one opening and fixed to the case, wherein the at least one opening is an elliptical opening. Also, an electrical terminal for use with a compressor is described.

A scroll compressor is described. The scroll compressor comprises a case having a high-pressure side and a low-pressure side, a stationary scroll plate having a base plate with a first side having at least one projection, which forms a spiral wrap, and a second side having a first annular protrusion, a pilot plate for separating the high-pressure side of the case from the low-pressure side of the case and the pilot plate abutting the second side of the stationary scroll plate, wherein the pilot plate has a first side, wherein the first side faces the second side of the stationary scroll plate and wherein the first side has a second annular protrusion, and a seal, wherein the seal seals a radial gap between the first annular protrusion and the second annular protrusion.

A compressor includes: a shell forming an outer portion thereof and having lower part in which an oil pan is formed to store oil; a motor provided in the shell; a compression unit provided in the shell to compress a working gas when being driven by the motor; a frame fixed to the shell and supporting the compression unit; a shaft supported by the frame, connecting the motor and the compression unit, provided to transmit a turning force of the motor to the compression unit, and including an oil passage; and an oil pump provided at lower part of the shaft to draw oil from the pan and supply the oil into the oil passage. The pump includes a bypass valve that is opened, when a pressure of oil flowing in the oil passage is higher than a threshold pressure, to return part of the oil to the pan.

The refrigerant compressor includes a compressor casing (2); an oil sump (13) arranged in the compressor casing (2); and an oil level sensor arrangement (14) configured to detect an oil level in the oil sump (13), the oil level sensor arrangement (14) including a tubular element (16) secured to the compressor casing (2) and a floating element (17) surrounding the tubular element (16) and being movably mounted with respect to the tubular element (16). The compressor casing (2) includes a passage opening (24) and dimensions of the tubular element (16), the floating element (17) and the passage opening (24) are defined to allow an insertion and a removal of the tubular element (16) and the floating element (17) into and out of the compressor casing (2) through the passage opening (24).

Provided are a scroll compressor, a refrigeration device, and a vehicle. In the scroll compressor, an oil discharging hole of an oil separation structure and an oil storage tank are connected to each other by an oil outlet channel disposed in a housing, and an oil outlet of the oil outlet channel is located above an oil inlet. The oil outlet channel can guide a refrigeration oil discharged from the oil discharging hole to flow into the oil storage tank. After passing through the oil outlet channel, a flow rate and a pressure of the refrigeration oil decrease, and thus an impact of the refrigeration oil on the remaining refrigeration oil in the oil storage tank is reduced when discharged from the oil outlet. Therefore, the refrigeration oil within the oil storage tank remains stable and can always immerse an oil return hole of the oil storage tank.

A thrust plate for use in a scroll compressor is described. The thrust plate comprises a disk-shaped body defining a plane and having a first side and a second side, wherein the second side opposes the first side, at least one protrusion extending from the first side, and at least one recess located at the second side, wherein the at least one protrusion and the at least one recess overlap at least partially in a direction perpendicular to the plane. Further, a system is described, wherein the system comprises a thrust plate with at least one protrusion and an orbiting scroll plate with at least one recess, wherein the at least one protrusion and the at least one recess overlap. Also, a scroll compressor having either a corresponding thrust plate or a corresponding system is described.

A rotary compressor is provided for which a vane slot is formed in each cylinder, a suction port is disposed at one side of the vane slot in a circumferential direction with a partition wall interposed therebetween, and at least one elastic portion is formed in a penetrated or recessed manner at at least one circumferential side surface of the partition wall or between circumferential side surfaces. Accordingly, an elastic strain of the partition wall may increase to reduce friction loss between the vane slot and a vane, a sealing distance may be secured between axial side surfaces of the partition wall to prevent refrigerant leakage between the vane slot and the suction port, an amount of oil or refrigerant stored between the vane and the vane slot may be increased by virtue of the at least one elastic portion formed on an inner surface of the vane slot defining the partition wall, thereby improving lubricity.

A scroll compressor has a drive shaft which drives a scroll compression mechanism housed in a housing and a drive shaft support member which supports the drive shaft. The drive shaft support member includes a plate portion having a predetermined thickness in an axial direction of the drive shaft. One side end surface of the plate portion has thereon a sliding support surface which supports the sliding movement of an orbiting scroll. Another side end surface of the plate portion has formed thereon a protruding portion which, protruding toward the other side in the axial direction, is fitted onto an inner peripheral surface of the housing. The protruding portion is interference fitted onto the inner peripheral surface of the housing, and thereby the drive shaft support member is fixed to the housing.

A lubricating oil supply apparatus having a structure in which a valve is forced in a direction for opening a bypass hole by a centrifugal force, and a spring presses the valve in a direction in which the valve closes the bypass hole. When the above-described structure is applied to an oil pump in which an oil (lubricating oil) supply amount increases in proportion to an operation speed, it is possible to secure a sufficient oil (lubricating oil) supply amount in a low speed operation mode, and prevent oil from being supplied more than necessary in a high speed operation mode.