A device for storing refrigerant of a refrigeration circuit and a method of operating the device, in particular for an air conditioning system of a motor vehicle. The device has a housing having a volume-enclosing wall with an inlet for introducing a refrigerant-oil mixture, and an outlet, a refrigerant discharge line arranged in the interior of the housing with an inlet opening arranged above a liquid level of the refrigerant for receiving gaseous refrigerant, and a system for returning oil to a compressor having at least one through hole formed below the liquid level of the refrigerant, in particular below a filling level of the oil, in the refrigerant discharge line. In addition, at least one through hole formed in the refrigerant discharge line is formed with an adjustable through-flow cross section, which can be varied by means of a closing apparatus.

A multi-stage compressor includes a compression module configured to compress a refrigerant therein through reciprocation of a plurality of pistons provided in a front housing, a rear housing coupled to the front housing to define an internal space between the front housing and the rear housing; a separation plate located between the front housing and the rear housing to separate the internal space between the front housing and the rear housing into a front space and a rear space; and a partition wall coupled to the rear housing to partition the rear space into an injection space before a refrigerant injected thereinto is primarily compressed, a primary discharge space from which the refrigerant is discharged in a primary compressed state by some of the pistons, and a secondary discharge space from which the primary compressed refrigerant is discharged.

Inserts for the air-conditioning of a vehicle and methods for forming same are provided. In an exemplary embodiment, the insert includes a spacer material part. The spacer material part includes an open region extending from a top side to an opposite underside, the open region forming an air-guiding structure. The spacer material part is covered by at least one cover layer on at least one of the top side and the underside. The open areas of the air-guiding structure include a plurality of ducts connected to one another to form a net-like duct structure. The duct structure forms flow regions or flow zones. A cover layer has at least one perforation in the region of connection or intersection points of the ducts.

A power transmission device includes: a pole piece configured to rotate by modulating a magnetic flux between a drive-side magnet and a stationary magnet; and a sealing member that partitions an inside of a housing into a driving side space where the drive-side magnet is disposed and a driven side space where the stationary magnet and the pole piece are disposed, so as to seal fluid between the driving side space and the driven side space. The pole piece and the stationary magnet have a cylindrical shape and are disposed coaxially with and radially outer side of the drive-side magnet. The sealing member includes: a sealing cylinder portion positioned radially outer side of the drive-side magnet; and a sealing bottom surface portion covering the sealing cylinder portion from the driving side space.

A gas injection-type heat-management system includes a base flow path sequentially provided with a compressor, an inner condenser, a heat exchanger, a first expansion valve, an outer condenser, a second expansion valve, and an evaporator, a heat exchange flow path branched from the base flow path at an upstream point of the heat exchanger, disposed to be heat-exchangeable with the base flow path in the heat exchanger by passing through a third expansion valve, and joined to the base flow path on the compressor or at an upstream point thereof, a first bypass flow path connected to the base flow path, a second bypass flow path connected to the base flow path, and a recirculation flow path branched from the base flow path at a downstream point of the outer condenser and joined to the heat exchange flow path at an upstream point of the third expansion valve.

The present invention relates to an air conditioner for a vehicle, which includes an air-conditioning case (200), and at least one door (100) mounted to be opened and closed at a predetermined position, wherein the door (100) is formed integrally with an arm pivot (140), and the arm pivot (140) includes a pin part, and ribs formed integrally with both sides of the pin part to reinforce rigidity of the pin part and offset noise. The air conditioner further includes distortion preventing parts formed on a rotary shaft to be dented and to be crossed to each other, thereby reducing a transformation rate of the door and securing accuracy of the pin part.

The present invention relates to an air conditioner for a vehicle, which includes an air-conditioning case (200), and at least one door (100) mounted to be opened and closed at a predetermined position, wherein the door (100) is formed integrally with an arm pivot (140), and the arm pivot (140) includes a pin part, and ribs formed integrally with both sides of the pin part to reinforce rigidity of the pin part and offset noise. The air conditioner further includes distortion preventing parts formed on a rotary shaft to be dented and to be crossed to each other, thereby reducing a transformation rate of the door and securing accuracy of the pin part.

A device for driving a compressor of a vaporous fluid, in particular an electric motor. The device includes a rotor and a stator having a stator core, arranged extending along a common longitudinal axis. A carrier element, which is formed having at least one receptacle element for a plug housing for accommodating at least one plug connector and also at least one clamping element for fixing the carrier element on the stator core as a coherent unit and one-piece component, is arranged pressing against a first end face of the stator aligned in an axial direction. The at least one clamping element is arranged on a side of the carrier element aligned in the axial direction and facing toward the stator core and having an inner side pressing against an outer side of an outer wall of the stator core, centering the carrier element on the stator core.

The invention relates to an electromagnetic proportional valve, preferably for refrigerant, which has the following: an armature of an electromagnet which is arranged so as to be able to be moved axially between an idle position, an activation position and working positions and on which an activation element is arranged; a piston which is constructed as a hollow piston and which has at a first axial end region a first opening toward a supply of the expansion valve and at a second axial end region a second opening toward a pressure compensation space; and a blocking member which is constructed to close the second opening, wherein the piston is arranged so as to be able to be axially displaced and wherein the piston is constructed to block a fluid passage as a blocking element of a main valve device, wherein the fluid passage of the main valve device is blocked in the idle position of the armature, wherein the activation element is constructed to act in the activation position of the armature on the blocking member in such a manner that it releases the second opening at least in regions, and wherein the fluid passage of the main valve device is open in the working positions of the armature. The invention further relates to a system having such a proportional valve.

An integrated device of a pump and a valve is disclosed. The integrated device of a pump and a valve includes a drive unit, a valve assembly mounted on the drive unit and configured to be switchable to a first position or a second position by the drive unit, a pump mounted on the drive unit, and a controller configured to control operation of the drive unit and the pump. The valve assembly includes a plurality of inlets and a plurality of outlets. At the first position and the second position of the valve assembly, different fluid passages are formed in the valve assembly. The pump is configured to communicate with the valve assembly to allow a flow of fluid through the valve assembly.