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JP2688580B2 |
An electrically operated air pump for supplying air to the exhaust system of an internal combustion engine having a central mounting plate which is integral with the electric motor assembly. The armature shaft of the electric motor drive...
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JP2680136B2 |
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JPH09296782A |
To reduce sliding frictional resistance sharply by arranging a guide means which consists of a guide groove for guiding rotation of a rotor and a guide ball which rolls in the guide groove, between the rotor and a cover or a housing. A g...
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JPH09242690A |
To provide a low noise type vortex pump whose efficiency is improved. A double-blade impeller 30 is arranged between a casing 10 and a casing 20, and a channel formed of the casings 10, 20 comprises a pump channel X, a communicating pass...
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JPH09242689A |
To provide a vortex pump whose delivery pressure is high while using a double-blade impeller for reducing a noise. A double-blade impeller 30 is rotatably arranged between a casing 10 and a casing 20. A channel formed of the casings 10, ...
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JPH09209997A |
To provide an electric air pump with a low noise by which a noise itself generated from a pump is improved, without the increase of the property of the pump. An electric air pump is constituted by assembling a motor for rotating the fins...
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JPH09209980A |
To eliminate noise in a wide frequency zone by providing a resonator having a circular extension chamber on a coaxial outer circumference of an intake port between the intake port and an air pump cover. A silencer is composed of an intak...
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JPH09195999A |
To improve noise eliminating effect of an air pump, and also regulate a noise eliminating mechanism easily by installing a noise eliminating plate in which an opening port which is smaller than a suction port or a discharge port is drill...
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JPH09158899A |
To diminish ventilation resistance so as to improve a noise eliminating effect in a mixed flow fan with a noise eliminator formed by arranging on the upstream side of a mixed flow fan, a noise eliminating part consisting of a peripheral ...
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JPH09133097A |
To reduce the manufacturing cost by arranging a supporting disc, which contacts with a shaft step part formed in a shaft end of a standard motor in the axial direction and which is guided on the shaft end in the radial direction, between...
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JPH09112483A |
To install a regenerative pump type compressor by a shaft vertical to an installing surface by arranging an installing place of a housing end surface on the opposite side of a driving motor in the compressor where the driving motor is ar...
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JPH09112485A |
To assemble a housing without requiring additional work to housing half parts by forming the housing of a regenerative pump type compressor out of a synthetic resin, and forming a driving shaft so as to be surrounded with a radial direct...
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JPH0988897A |
To greatly reduce the vibration and noise to be propagated from a fan casing to an external cylinder by fitting the noise absorbing material to an inner surface of the external cylinder, providing the fan casing on the inner circumferent...
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JP2587506B2 |
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JPH0960600A |
To drastically decrease noise by adjusting characteristics of frequency in absorbing sound. A fan outer cylinder 7 is provided outside an outer peripheral sound absorbing material 9 through a protrusion as a spacer, and an air layer is f...
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JP2585420B2 |
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JPH0949498A |
To provide a multistage compressor having high efficiency in each stage, of small size and light weight, and generating a large flow amount. A compressor is provided with a plurality of impellers 14, 16 coaxially mounted in a rotationall...
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JPH0914187A |
PURPOSE: To provide a multistage compressor to have high efficiency at each stage, reduce size and weight, and have a high flow rate and a high pressure. CONSTITUTION: A multistage compressor comprises a plurality of impellers mounted on...
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JP2569854B2 |
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JP2569906B2 |
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JP2569143B2 |
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JP2521440Y2 |
The invention relates to a multi-stage lateral channel compressor, wherein the housings of the individual compressor stages consisting of individual housing shells are arranged axially, one behind the other, and are mechanically intercon...
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JPH08319986A |
PURPOSE: To enable long term operation as a reaction product hardly adheres an adhesion area is small even when the product adheres and starting is possible even by low torque like that of an inverter drive. CONSTITUTION: In a circumfere...
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JP2557495B2 |
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JPH08303397A |
PURPOSE: To reduce a ventilating resistance and noise in wider frequency ranges. CONSTITUTION: A core sound damping part 8 installed at the center of an outer tube 7 is formed in an oval shape by covering nonflammable sound absorbing mat...
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JP2547598B2 |
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JP2544454B2 |
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JP2536571B2 |
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JPH08210293A |
To improve the hermetical sealing of a gap by fastening and holding a packing ring abutting on the inner peripheral surface of a portion protruded in the axial direction of a supporting ring and extended in a radial direction, to an abut...
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JPH08151999A |
PURPOSE: To obtain a relatively large silencing effect by providing a cylindrical part opened toward the downstream of an air flow path in a core silencing part, to form a large sound absorbing surface against a noise emitted from a mixe...
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JPH0826877B2 |
A turbomolecular pump comprising, in addition to usual axial flow pumping stages consisting of alternated rotors (1,1a) and stators (2,2a), one or more tangential flow pumping stages (10;30) arranged at the exhaust side of the pump, to r...
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JPH0874786A |
PURPOSE: To obtain a new type blower which has a high wind pressure, a large flow rate, a high efficiency, and a quiet sound. CONSTITUTION: By returning the air flow discharged from a rotary vane 1a to an inner side stationary passage 4b...
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JPH0821398A |
PURPOSE: To improve compressing efficiency by forming an inclined flow passage with its exit located more in a radial outside direction than its entrance between a casing and a rotationally-driven disk and disposing a reverse chamber par...
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JPH08500410A |
PCT No. PCT/AU93/00428 Sec. 371 Date Dec. 19, 1994 Sec. 102(e) Date Dec. 19, 1994 PCT Filed Aug. 20, 1993 PCT Pub. No. WO94/04826 PCT Pub. Date Mar. 3, 1994.Disclosed is a regenerative pump (1) comprising a casing (11) provided with an i...
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JPH07117070B2 |
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JPH07117069B2 |
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JPH07117058B2 |
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JPH07117071B2 |
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JPH07117068B2 |
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JPH07117057B2 |
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JPH07111195B2 |
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JPH07111189B2 |
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JPH07103873B2 |
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JPH07103874B2 |
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JPH0799158B2 |
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JPH0746796Y2 |
The invention relates to a side channel compressor (1, 2) with a rotor wheel (8, 9) having conveyor blades (7) and with a device for introducing a cooling fluid into the conveyor section of the compressor. Damage to the conveyor blades b...
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JPH07247992A |
PURPOSE: To reduce noise of a vortex flow blower sufficiently while the outside diameter of a blower part is made smaller than the outside diameter of a motor to reduce the size of the blower. CONSTITUTION: In a vortex flow blower so con...
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JPH0786357B2 |
PURPOSE:To improve the pumping effect and to achieve high vacuum by supporting the opposite ends of a rotary shaft on radial magnetic bearings and supporting the section between the rotor of a motor and the final stage pump of a multi-st...
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JPH07217588A |
PURPOSE: To prevent the occurrence of an adverse influence exercised on a swirl flow of gas and to improve aerodymanic characteristics by a method wherein a small part in the vicinity of the inner peripheral edge of a blade formed at an ...
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JPH0732933Y2 |
A motor-driven fuel pump including a cylindrical housing; a pump section fixedly mounted at one end portion of the housing so as to close the one end portion; a motor section mounted in the housing for driving the pump section; and a cov...
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