Abstract: The invention relates to a solenoid valve with a housing as well as an inlet and an outlet, wherein the solenoid valve further comprises a valve element and an orifice, wherein the orifice comprises an orifice inlet and an orifice outlet. In order to increase the maximum operating pressure differential of the solenoid valve the orifice is provided in a membrane and the orifice has a diffuser characteristic in a direction from the orifice inlet to the orifice outlet.

Abstract: At least one bypass opening is formed in a base of a scroll member, and communicates with at least one compression chamber. The bypass opening communicates with a passage leading to a suction pressure chamber within a compressor shell. A valve includes an element electrically powered to move between a first position at which it blocks flow of refrigerant from the bypass port to the passage leading to the suction pressure chamber, and a second position at which it allows flow of refrigerant between the bypass port and the passage leading to the suction pressure chamber. A portion of the valve, which is electrically powered, is mounted outside of the compressor shell.

Abstract: The invention provides a valve comprising a tube for guiding movement of a plunger, a solenoid which can be arranged about the tube, and a yoke which can be positioned in an operational position relative to the tube and relative to the solenoid so that it provides a magnetic path between the solenoid and portions of the tube. The yoke engages the tube and thereby prevents removal of the solenoid from tube. The invention thereby provides a very simple valve design with a low amount of components. The invention further provides a method of making a valve including fixing a solenoid to a tube by use of a yoke which engages the tube.

Abstract: The invention provides an electromagnetic actuator for moving a closure member of a valve. The actuator contains a solenoid, a yoke and a wire spring for fixing a guide tube, in which the closure member is movable, to the solenoid. The spring is formed so that it further fixes the yoke to the solenoid. Accordingly, the number of components is reduced, and detaching of the yoke may easily be facilitated.

Abstract: The invention provides a valve comprising a tube for guiding movement of a plunger, a solenoid which can be arranged about the tube, and a yoke which can be positioned in an operational position relative to the tube and relative to the solenoid so that it provides a magnetic path between the solenoid and portions of the tube. The yoke engages the tube and thereby prevents removal of the solenoid from tube. The invention thereby provides a very simple valve design with a low amount of components. The invention further provides a method of making a valve including fixing a solenoid to a tube by use of a yoke which engages the tube.

Abstract: The invention provides a servo valve with a main piston and a servo piston. The servo piston controls a pressure in a servo chamber and thereby controls movement of the main piston based on a pressure difference between two chambers of the valve. To facilitate opening of the valve by relatively small pressures even in high pressure systems, the servo chamber according to the invention is provided inside the armature.

Abstract: A scroll compressor includes a compressor shell having first and second scroll members. The scroll members each have a base and a generally spiral wrap extending from its base. The generally spiral wraps of the first and second scroll members interfit to define compression chambers. A shaft causes the second scroll member to orbit relative to the first scroll member. At least one bypass port is formed in a base of one scroll member, and communicates with at least one of the compression chambers. The bypass port communicates with a passage leading to a suction pressure chamber within the compressor shell. A solenoid valve is movable between a reduced capacity position and a full capacity position, and selectively supplies a pressurized fluid to a fluid valve associated with the bypass port, such that movement of the solenoid can control whether the bypass port is open or closed.

Abstract: At least one bypass opening is formed in a base of a scroll member, and communicates with at least one compression chamber. The bypass opening communicates with a passage leading to a suction pressure chamber within a compressor shell. A valve includes an element electrically powered to move between a first position at which it blocks flow of refrigerant from the bypass port to the passage leading to the suction pressure chamber, and a second position at which it allows flow of refrigerant between the bypass port and the passage leading to the suction pressure chamber. A portion of the valve, which is electrically powered, is mounted outside of the compressor shell.

Abstract: The invention provides an electromagnetic actuator for moving a closure member of a valve. The actuator contains a solenoid, a yoke and a wire spring for fixing a guide tube, in which the closure member is movable, to the solenoid. The spring is formed so that it further fixes the yoke to the solenoid. Accordingly, the number of components is reduced, and detaching of the yoke may easily be facilitated.