Related is an electric oil pump, and the electric oil pump includes a pump housing having an inner pump cavity, where the inner pump cavity includes a first cavity and a second cavity; a first rotor assembly disposed in the first cavity; a stator assembly and a second rotor assembly that are disposed in the second cavity; an electric control board; a supporting member at least partially disposed between the stator assembly and the electric control board; and a connecting terminal. The electric oil pump can reduce deformation of the connecting terminal when the connecting terminal is respectively connected to the stator assembly and the electric control board.

A housing part for attachment to a housing includes: at least one opening for at least one conductor embedded in a glass or a glass-ceramic material that is fed into the at least one opening providing a glass-metal seal (GTMS); an elevated area and/or a recess area configured to center the housing part within a structure of the housing and/or enhance the resilience against bending, the at least one opening being provided in the elevated area and/or the recess area, the elevated area and/or the recess area being situated in a glassing area plane; and at least two bores situated in a plane different from the glassing area plane.

An electric oil pump includes a pump housing provided with an a first cavity and a second cavity; a first rotor assembly disposed in the first cavity; a stator assembly and a second rotor assembly that are disposed in the second cavity; an electric control board assembly; an isolating member, where the stator assembly is disposed at a first side of the isolating member, the electric control board assembly is disposed at a second side of the isolating member; and a wiring terminal fixedly connected to the isolating member; where a connecting position between the wiring terminal and the isolating member is sealed and a connecting position between the isolating member and the pump housing is sealed. The electric oil pump can prevent working medium from affecting the performance of the electric control board assembly.

A pump unit includes a rough-vacuum pump and a Roots vacuum pump connected in series and upstream of the rough-vacuum pump in the direction of flow of the pumped gases. The Roots vacuum pump has three pumping stages in which the rotors are designed to be driven simultaneously in rotation by a motor of the Roots vacuum pump. A ratio of the flow rate generated by the first pumping stage of the rough-vacuum pump in the direction of flow of the pumped gases over the flow rate generated by the last pumping stage of the rough-vacuum pump is less than or equal to four.

There is provided an electric compressor in which the connection strength between an inverter circuit section and an electrical circuit section connected thereto by a connection terminal is improved. An inverter circuit section (3) includes an inverter control board (17) and a resin-molded sleeve assembly (18). In the sleeve assembly, a sleeve (32) and a terminal connection portion (23) are integrally resin-molded in a state in which a screw groove portion is protruded. The inverter control board (17) and a filter side connection terminal (71) of a filter circuit section (4) are fastened together to the terminal connection portion with a nut (92) screwed into the screw groove portion, whereby the inverter control board 17 and the filter circuit section 4 are electrically connected.

An electric compressor has an electric motor housed in a casing and that drives a compression part for compressing a refrigerant guided into the casing, and a connecting part accommodating container in which an external power line is guided from an exterior of the casing, and accommodating a connecting part for electrically connecting the external power line that supplies power to the electric motor and an internal power line guided from the electric motor. An insertion hole through which the internal power line is inserted is provided to the connecting part container; the connecting part container can be split with a splitting line for splitting the connecting part container and splitting the insertion hole; a first rubber ring for blocking off the insertion hole in a liquid-tight state is disposed inside the connecting part container; and the first rubber ring is sandwiched between split walls forming the insertion hole.

A pump unit includes a rough-vacuum pump and a Roots vacuum pump connected in series and upstream of the rough-vacuum pump in the direction of flow of the pumped gases. The Roots vacuum pump has three pumping stages in which the rotors are designed to be driven simultaneously in rotation by a motor of the Roots vacuum pump. A ratio of the flow rate generated by the first pumping stage of the rough-vacuum pump in the direction of flow of the pumped gases over the flow rate generated by the last pumping stage of the rough-vacuum pump is less than or equal to four.

A scroll compressor includes a scroll compression mechanism, a motor, and a casing. The motor includes a stator having a stator core and an insulator, a rotor disposed inside the stator, a coil wound around a plurality of teeth of the stator core via the insulator, and an outgoing line at an end of the coil. When the motor is viewed along a rotation axis of the rotor, at least one of the outgoing line and a film wound around the outgoing line satisfies 065<(D1−da)/(D1−D2)<0.95. An outer radius of the teeth centered on a position of the rotation axis of the rotor is D1. An inner radius of the teeth is D2. An average distance from the position of the rotation axis of the rotor to the at least one of the outgoing line and the film wound around the outgoing line is da.

The scroll compressor (1) includes a hermetic casing (2); an electric motor (12) arranged within the hermetic casing (2); an electrical box (14) attached to an outer surface of the hermetic casing (2); and compressor power terminals (13) insulated from the hermetic casing (2) and electrically connected to the electric motor (12), the compressor power terminals (13) protruding in the electrical box (14), the electrical box (14)] containing a control module (15) configured to control the electric motor (12), control wires (16) connected to the control module (15), and a terminal block assembly (17) configured to electrically connect the compressor power terminals (13) and the control wires (16) to external power leads (18) of an external power source. The terminal block assembly (17) includes a body part (19) and a wire guiding part (21) which is configured to guide and position the control wires (16) in predetermined connection positions with respect to the body part (19).

A compressor/expander machine is pressure-proof with an electrical connecting unit arranged on the housing thereof comprising at least one electrical lead-through that leads into an inner space for an electrical connection with an electrical unit arranged in the housing. The electrical lead-through comprises a mounting body that is mounted on the housing as a separate element and electrical contact elements seated therein. The mounting body comprises a first mounting body sealing surface which is remote from the at least one inner space and surrounds the electrical contact elements in closed manner and which runs transverse to a compressive force that acts on the lead-through due to the medium under pressure in the at least one inner space and which cooperates in sealing manner with a first housing sealing surface of the housing that faces the at least one inner space and this first mounting body sealing surface.