Disclosed is a trochoid lubricant supply device that is configured to connect to a rotational shaft. A connector of the lubricant supply device is configured to reduce an oil leakage amount of lubricant, and is configured to insert to a lower portion of a rotational shaft. The connector includes: a rotator mounting member inserted into and fixed to the rotator of the lubricant supply device; a penetrating member that penetrates a fixer of the lubricant supply device; an enlarged diameter extending radially outwards from the penetrating member outside the fixer; and a rotational shaft mounting member extending axially in the diameter enlarged member and is fastened to the rotational shaft. Further, the lubricant supply device of the present disclosure can supply the oil regardless of a rotation direction of the rotational shaft by supplying the oil by a space pivoting about the rotational center of the rotator.

A scroll compressor includes a casing, a low-pressure space and a compression mechanism. The compression mechanism includes fixed and movable scrolls, a fluid chamber including first and second compression chambers, and an adjustment mechanism. The fluid chamber has different discharge start points between the first and second compression chambers. An oil inflow groove is formed in one sliding surface, and an oil relief passage is formed in the other sliding surface. The oil relief passage includes a communication portion that communicates with the oil inflow groove in a predetermined angular range, lubricating oil flowing from the oil inflow groove into the low-pressure space through the communication portion. The predetermined angular range is from a position between a discharge start point of the first compression chamber and a discharge start point of the second compression chamber to a position after the discharge start of the second compression chamber.

Screw compressor with a compression chamber that is formed by a compression housing, in which a pair of meshed helical compressor rotors in the form of a screw are rotatably mounted and with a drive motor that is provided with a motor chamber formed by a motor housing, in which a motor shaft is rotatably mounted. The motor shaft drives at least one of the aforementioned two compressor rotors, where the compression housing and the motor housing are connected directly together to form a compressor housing, where the rotor shafts of the compressor rotors, as well as the motor shaft, extend along axial directions that are oblique or transverse to the horizontal plane. The motor chamber and the compression chamber have the same or similar pressure.

A liquid pump, in particular for providing a supply to a transmission or to a clutch in the drive train of a motor vehicle, includes a drive motor, a pump module which can be operated in two opposing directions of rotation, and at least one inlet and multiple outlets, each of which has at least one corresponding check valve. The pump has a valve plate corresponding to the pump module in which, for each check valve, a valve seat and a receptacle for a valve element interacting with the valve seat are provided.

Provided is a compressor which enables reliable separation of oil from a refrigerant gas while suppressing increases in the size of equipment and manufacturing costs. Provided is a compressor (1) including a housing (2), a compression mechanism (13) compressing a refrigerant gas flowing into a suction space (Ss), an oil separation space (So) separating oil from the refrigerant gas compressed by the compression mechanism (13) and guiding the refrigerant gas to a discharge pipe (40), and a separation cylinder (30) disposed along an axis line (X2) of the oil separation space (So) above the oil separation space (So) in a gravitational direction. The separation cylinder (30) has a small-diameter section, a large-diameter section formed below the small-diameter section in the gravitational direction, and an introduction inlet formed in the small-diameter section. The oil separation space (So) has a separation section in which the small-diameter section and the large-diameter section are disposed, the separation section having a first inner diameter larger than a second outer diameter of the large-diameter section, and an oil storage section disposed below the separation section. The refrigerant gas compressed by the compression mechanism (13) flows into the separation section.

A vane cell pump, including: a rotor, which can be rotated about a rotational axis, and a plurality of vanes which are guided by the rotor such that they can be shifted, wherein the rotor includes a sub-vane chamber for each vane, and each vane forms a shifting wall of the sub-vane chamber assigned to it; a first end-facing wall which adjoins the rotor on an end-facing side on a first side of the rotor and which, in order to control pressure to the sub-vane chamber, includes a sub-vane cavity which extends in the circumferential direction and includes a control edge as viewed in the circumferential direction; a second end-facing wall which adjoins the rotor on an end-facing side on a second side of the rotor and which, in order to control pressure to the sub-vane chamber, includes a sub-vane cavity which extends in the circumferential direction and lies opposite the sub-vane cavity of the first end-facing wall and includes a control edge, as viewed in the circumferential direction, which is similar to the control edge of the sub-vane cavity) of the first end-facing wall, wherein the control edge of the sub-vane cavity of the first end-facing wall, and the control edge of the sub-vane cavity of the second end-facing wall which is similar to it, are formed differently from each other and/or are arranged offset, in particular angularly offset about the rotational axis as the apex, with respect to each other.

A variable displacement oil pump includes: a pump constituting section; a movable member; an urging mechanism; a control hydraulic chamber group; a drain mechanism arranged to discharge the oil from a specific one control hydraulic chamber of the control hydraulic chamber group; and a control valve which into which the oil of an upstream side that is discharged from the discharge portion, or the oil from the control hydraulic chamber is introduced as a control hydraulic pressure, which is arranged to supply the oil of the upstream side that is discharged from the discharge portion to the specific one control hydraulic chamber, or to discharge the oil from the specific one control hydraulic chamber by the drain mechanism to regulate the pressure of the specific one control hydraulic chamber.

A drive device includes a rotor, a stator, a housing including an accommodation portion to store oil, and a pump driven through a motor shaft. The pump includes an external gear fixed to an end on one side in an axial direction of the motor shaft, an internal gear surrounding a radial outside of the external gear and meshing with the external gear, a pump room accommodating the internal gear and the external gear, a suction port through which the oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The housing includes an outer lid in which the pump room is provided. The outer lid includes a shaft insertion hole that penetrates the outer lid from a surface on the other side in the axial direction of the pump room to a surface on the other side in the axial direction of the outer lid, the motor shaft being inserted into the shaft insertion hole, and a support defining at least a portion of the surface on the other side in the axial direction of the pump room and at least a portion of a radially inside surface of the shaft insertion hole. The support journals the motor shaft on the radial outside of the motor shaft.

A compressor system is provided that includes a contact cooled compressor and a coolant separator. The coolant separator is used to remove coolant fluid from a compressed flow stream produced by the contact cooled compressor during its operation. The coolant separator routes the removed coolant fluid back to the contact cooled compressor for further use. In some forms the coolant fluid is cooled prior to delivery back to the compressor. A stop valve can be provided in the coolant fluid return line to halt the flow of the fluid. A pressure sensitive member can be disposed to sense pressure of the coolant fluid that has been routed past the stop valve. Operation of the compressor can be changed as a result of the sensed pressure from the pressure sensitive member. Information from a temperature sensitive member can also be used to change operation of the compressor.

Provided is a scroll compressor including a sealed case, a fixed scroll portion fixed at an inside of the sealed case and provided with a fixed scroll vane, an orbiting scroll portion provided with an orbiting scroll vane that is coupled to the fixed scroll vane, and a rotating shaft formed to allow the orbiting scroll portion to orbit. The orbiting scroll portion is provided at a center thereof with a shaft support portion such that the orbiting scrolling portion is coupled to the rotating shaft. The shaft support portion includes a closing portion provided to cover an end portion of the rotating shaft, and slide while in contact with an inner surface of the fixed scroll portion, and a high-pressure space formed in an outer surface of the closing portion that faces the inner surface of the fixed scroll portion, and on which a discharge pressure acts.