Abstract:
According to the present invention, a resin composition preferable for molding a sealing member superior in abrasion resistance at a high temperature, mountability on an axis and seal groove with deformation, and sealability can be provided. The resin composition of the present invention contains (b) 1 part by weight - 7 parts by weight of a powder of a compound having a layer crystal structure, and (c) 8 parts by weight - 27 parts by weight of a resin powder, per (a) 100 parts by weight of polyether sulfone.
Abstract:
Die Erfindung betrifft ein Vakuumsystem mit einer Vakuumpumpe und wenigstens einem zu evakuierenden Rezipienten, der ein Gehäuse und wenigstens eine Auslassöffnung aufweist, wobei die Vakuumpumpe mit der Auslassöffnung des Rezipienten verbunden ist, wobei zwischen der Vakuumpumpe und dem Gehäuse des Rezipienten ein Ansatz angeordnet ist, wobei der Ansatz fest und vakuumdicht an dem Gehäuse des Rezipienten angeordnet ist, wobei an dem dem Rezipienten gegenüberliegenden Ende des Ansatzes die Vakuumpumpe lösbar fest an dem Ansatz angeordnet ist, wobei zwischen dem der Vakuumpumpe zugeordneten Ansatzende und der Vakuumpumpe wenigstens ein O-Ring zur Abdichtung vorgesehen ist, wobei die O-Ring-Dichtung als Elastomer-O-Ring ausgebildet ist.
Abstract:
Vacuum pumpof the rotating vane type comprising: - a housing (4) defining a cavity (18) having an inlet and an outlet, - a drivable vane member (20) for a rotary driven movement inside the cavity (18), - a rotor (30) inside the cavity, - a rotatable central shaft (40) extending into the cavity,
wherein the vane member (20) is coupled to the central shaft (40) by means of an eccentric element (42) on the central shaft, and slidably arranged in the rotor 30), the rotor (30) being rotatable together with said vane member (20) upon rotation of the vane member, wherein a rotational axis (AS) of the central shaft (40) is offset from the rotational axis (AR) of the rotor (30) and the point of action (AE) of the vane member (20) is offset from the rotational axis of the central shaft (40) by means of the eccentric element (42) on the central shaft (40), and wherein the rotor (30) encloses radially the eccentric element (42) of the central shaft (40).
Abstract:
An electrically-driven compressor including a housing, an electric motor, a compression mechanism, a cover member, a motor drive circuit, and a sealing member is disclosed. The electric motor is accommodated in the housing. The compression mechanism is accommodated in the housing and operated by the electric motor. The cover member is attached to the housing. The housing and the cover member form an accommodation portion including an accommodation space therein. The motor drive circuit is accommodated in the accommodation space and drives the electric motor. The sealing member is arranged between the housing and the cover member to seal the accommodation space. The sealing member includes an elastic seal portion that comes into close contact with the housing and the cover member. A core sustains the shape of the seal portion in conformance with the circumferential edge of the accommodation space. The core is formed so that at least a circumferential edge part of the core is in conformance with the circumferential edge of the accommodation space. The seal portion is formed integrally with the circumferential edge part of the shape sustaining member by depositing rubber material thereon.
Abstract:
The invention relates to a rotor pump comprising a pump housing and a rotor which is rotatably mounted therein. A vane is displaceably mounted in the rotor with the base body thereof, lies on an inner peripheral surface with the tips thereof, and defines an inlet chamber and a pressure chamber. The vane has a constant length, the vane base body consists of a plastic material, and the vane tips provided on the free ends thereof facing the inner peripheral surface consist of a thermoplastic material. The vane base body and the vane tips are fixed to each other in a detachable and form-fitting manner following the production thereof.
Abstract:
The invention relates to a rotor pump (2) which comprises a pump housing and a rotor (20) rotatably received therein. A vane is displaceably received in the rotor with its vane base (32) and rests on the interior peripheral surface of the pump housing with its vane tips (28), thereby defining a suction chamber and a pressure chamber, said vane having a constant length. The vane base consists of aluminum or an aluminum alloy and the vane tips (28) provided on its free ends and facing the interior peripheral surface consist of plastic.
Abstract:
A multi-stage vacuum pump comprising: first and second half-shell stator components defining a plurality of pumping chambers and for assembly together along respective longitudinally extending faces; first and second end stator components for assembly at respective longitudinal end faces of the first and second half-shell stator components; gaskets for sealing between the first and second half-shell stator components when assembled together at the longitudinally extending faces; and O-rings for sealing between the first and second end stator components and the first and second half-shell stator components when assembled; wherein annular channels intersect longitudinal recesses and each longitudinal recess comprises a stop fixed relative to the intersection, and the gasket and the longitudinal recess are configured that when the gasket is located in the recess during assembly the gasket is biased against the stop for locating an end portion of the gasket relative to the intersection.