摘要:
Scroll compressor provided with a compression mechanism (3) that is formed by engaging a paired fixed scroll and orbiting scroll (16, 20) in which spiral wraps (18 and 22) are vertically provided on one surface of end plates thereof, numerous fine depressions (32) are provided on one or both of a side surface (18A, 188) of a spiral wrap (18) of the fixed scroll and a side surface (22A, 22B) of a spiral wrap (22) of the orbiting scroll, which are in sliding contact with each other.
摘要:
A portable, rotary vane vacuum pump (3) with a rotor (13) eccentrically mounted within the bore of a housing (7) to substantially abut the bore at a side location (43). The abutting, side location (43) is between the inlet (31) and outlet (33) passages of the bore in the direction of rotor rotation (21). A pocket (P) is then created just above the contact area (43) between the rotor (13) and bore which collects and maintains a pool of lubricating oil. The pool enhances the seal at the contact area (43) below it enabling the pump (3) to draw a deep vacuum with just a single stage. The portable pump (1) also includes a removable, oil reservoir cartridge (4) mounted to the main body of the pump (1). Other features include a visual indicator (20) in the cartridge (4) to monitor the condition of the circulating oil, a step up gearing arrangement (54) for the cooling fan (50), and a step down gearing arrangement (58) for the vane pump (3).
摘要:
A screw compression apparatus (1) in which the bearing lifespan is unaffected by the properties of the target gas being compressed comprises: a screw compressor (2) in which a rotor shaft of a screw rotor (6) that is rotatably housed to compress a target gas together with a rotor lubricating fluid in a male/female interlocking arrangement in a rotor chamber (5) formed in a housing (4) is held by bearings (10, 11) arranged in bearing spaces (7, 8) formed in a housing (4) adjacently to a rotor chamber (5), and which includes shaft sealing members (13, 14) that isolate the bearing space (7, 8) from the rotor chamber (5); a lubricating fluid separating collector (3) that separates the rotor lubricating fluid from the target gas discharged by the screw compressor (2); a rotor lubricating flow channel (25) through which the rotor lubricating fluid separated by the lubricating fluid separating collector (3) is introduced into the rotor chamber (5); and a bearing lubricating system (17) for supplying a bearing lubricating fluid to the bearing space (7, 8), and cooling the bearing lubricating fluid flowing out from the bearing space (7, 8) and returning the fluid to the bearing space (7,8).
摘要:
Die Erfindung betrifft eine schmiermittelgedichtete Drehschiebervakuumpumpe mit einer Pumpstufe (17), welche einen Gaseinlass, einen Gasauslass (51), einen Schöpfraum (11) und ein Pumpstufengehäuse (10) aufweist. Um die Geräuschbildung zu reduzieren, schlägt die Erfindung vor, dass eine Rinne (54) wenigstens teilweise um die Mündung eines zwischen dem Schöpfraum (11) und dem Gasauslass angeordneten Kanals (50) in den Gasauslass herum angeordnet ist, in der aus dem Schöpfraum ausgeworfenes Schmiermittel aufgefangen und dadurch am Zurückfallen in den Schöpfraum gehindert wird.
摘要:
The invention relates to a rotary vacuum pump that has a suction chamber (12) in a housing (10). A rotor (14) is eccentrically mounted in the suction chamber (12). Sliding vanes (18) are connected to the rotor (14). A discharge channel (30) is also connected to the suction chamber (12) and to an oil chamber (32). A valve arrangement (38) is disposed between the discharge channel (30) and the oil chamber (32), in order to prevent the medium from flowing back from the oil chamber (32) into the suction chamber (12). According to the invention, at least one compensating channel (50) is provided and is connected to the discharge channel (30) and to the oil chamber (32).
摘要:
A vacuum pump (1) has an oil separator (42) connected downstream of its outlet (33) and a duct (45, 46) through which the oil separated in the oil separator (42) is returned to the vacuum pump (1). To feed back the oil in a simple manner, the oil feedback duct (45, 46) opens into a duct (47) that supplies gas ballast to the pump (1).
摘要:
There is provided a scroll type compressor using lubricant oil and including a pair of scroll members (20, 30) confronting with each other in an axial direction. Each of the scroll members has an end plate (22, 32) extending perpendicular to the axial direction and an involute wall (21, 31) having a first and a second axial end which are opposite to each other in the axial direction. The first axial end is connected to the end plate. The second axial end confronts with the end plate of a counterpart one of the scroll members. In the scroll type compressor, the second axial end has a shallow groove (26, 36) with a depth for suitably holding therein the lubricant oil to form an oil seal between the second axial end and the end plate that confronts with the second axial end.