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JP2007107454A |
To muffle NZ noise generated in a casing in a region of the casing.A vortex flow blower 1 as an example is equipped with the casing 2 using a casing body 21 wherein each of walls 79, 79 for enlarged parts, which are the walls in the regi...
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JP3907888B2 |
To simplify a structure of a mold for injection molding without generating a weld phenomenon. This impeller 2 for a circumferential flow pump 1 is provided with a plurality of vane grooves 12 on the outer periphery of a synthetic resin- ...
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JP3907887B2 |
To use an injection-molded impeller as it is without grinding it. This impeller 7 is provided with a plurality of vane grooves 12 on the outer periphery of a synthetic resin-made disc-shaped member 8 to be rotated by a motor, and it is r...
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JP2007092659A |
To reduce turbulence noise by suppressing exfoliation of air flow from tip part wall surfaces in suction opening sides of a first and a second blade part 62, 63.A plurality of first and second blade parts 62, 63 provided on an outer circ...
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JP2007071204A |
To provide an impeller for a sucking machine capable of being firmly installed on a shaft, without requiring balancing under any situations.This impeller 28 for a side channel sucking machine includes a hub component 42 which can be coup...
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JP3894588B2 |
To connect necessary pipes in various directions by providing each pipe connecting unit with inlet and outlet openings in both sides facing each other at least in an axial direction. A reproducing pump type compressor 2 is connected to a...
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JP3894115B2 |
To provide a shaft seal device being easily machined and easily fixed to a supporting member, and to provide a turbo compressor being easily fixed to a casing by comprising the shaft seal device. In this shaft seal device wherein a beari...
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JP3892291B2 |
To provide a method for manufacturing an injection-molded resin rotary body hard to generate a waste material and capable of obtaining the flatness of a side surface and the dimension of an outer diameter with high accuracy. In the metho...
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JP3866779B2 |
PURPOSE: To reduce the exhaust noise of a blower without needing a special muffler by making exhaust air, discharged from the discharge port of a blower, reach a muffling passage chamber through a flexible duct, eliminating noise in the ...
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JP3862135B2 |
To suppress a swing by a recirculating flow at the inlet of a vane and a stall of swing of the vane by circumferentially forming, in the inner surface of a casing, a plurality of grooves with a specified width or narrower connecting a va...
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JP3854679B2 |
To reduce the size and the weight of a muffler by providing a blower having a blade with a reduced chamber by driving an electric motor by a frequency exceeding a commercial source frequency and a muffling passage chamber to absorb noise...
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JP2006316792A |
To provide a vacuum pump including no molecule dragging stage having a rotary disc provided with a flat pumping face or a rotary cylindrical drum.This hybrid turbo molecular vacuum pump includes a housing having a take-in port and a disc...
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JP3843781B2 |
To solve such a problem with the conventional structure of a vortex flow fan that noise is high and air quantity is small though a pressure is high. Where the outside diameter of an impeller is D, a clearance between the outer periphery ...
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JP2006283702A |
To miniaturize a valve drive device and improve control response.Since self opening type valve 9 is constructed to be driven and opened by torque of an electric air pump 3, namely motor torque of a motor shaft 5 of an electric motor 4, a...
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JP3829349B2 |
To surely reduce noise at an arbitrary position by providing a control means for outputting a control sound signal to a speaker in order to radiating predetermined control sound against sound caused by rotation of a fan body. An air-cond...
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JP3810672B2 |
To provide an impeller for vortex blower suitably usable for a vortex blower provided with a blade having a three-dimensional shape, and a method for manufacturing the same. This impeller 1 for vortex blower is formed as a two-divided st...
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JP2006183521A |
To provide a pressurizing centrifugal pump capable of obtaining high pressure by forming a fluid passage in such a manner that cross section area thereof gradually gets larger from a suction port toward a delivery port and gets smaller a...
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JP3781260B2 |
To provide a mixed flow compressor with a screw improved in suction performance and balance especially and applicable to a comparatively small gas turbine as a compressor used for a dispersion type power generator, an automobile engine, ...
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JP2006125330A |
To provide an impeller mounting structure capable of adjusting alignment of an impeller and an inner face of a casing even without preparing various adjusting parts.A cylindrical mounting seat 16, an elastic spacer 35, the impeller 6, a ...
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JP3774760B2 |
To realize a vortex ring device suitable for generating and accelerating a fluid current by inducing flow of the fluid, with respect to the vortex ring device for inducing the flow of the fluid such as air and water. This vortex ring dev...
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JP2006090263A |
To provide a vacuum pump of an atmospheric exhaust capable of obtaining a high vacuum condition in a short time irrespective of its low power consumption and compact size.A turbo molecular pump part 2, a regeneration pump part 4, and a s...
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JP2006509952A |
A vacuum pumping arrangement comprises a drive shaft, a motor for driving said drive shaft, a molecular pumping mechanism and a regenerative pumping mechanism. The drive shaft is arranged for simultaneously driving the molecular pumping ...
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JP2006029126A |
To meet the need of noise reduction, although generated noise of an impeller has reached the limits in a multiblade fan.When a centrifugal fan 5 is rotated, a back face of a blade A6 of the centrifugal fan 5 is peeled at the middle there...
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JP3724413B2 |
To provide a small and highly efficient vacuum cleaner by obtaining a small, lightweight, and highly efficient motor-driven fan for the vacuum cleaner. This motor-driven fan 11 for the cleaner is composed of an impeller 14 having a mixed...
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JP3712028B2 |
To provide a compressor applied only to an effective compressor impeller but not applied to an ineffective impeller according to a guideline condition on the peripheral velocity of impellers in the compressor for gradually compressing pr...
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JP2005299432A |
To provide a blower of low operation noise and excellent in blower performance.A mixed flow impeller 12a including a plurality of blades 2, a motor 3 driving and rotating the mixed flow impeller 12a and an air guider 13 including a sucti...
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JP2005291149A |
To dissolve a problem that although there is a technique of arranging fin pitch angles unequally and offsetting positions of fins on a front and a back surface by a half pitch as a technique for reducing fan noise, an overall value of th...
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JP2005291150A |
To provide a self-pressure opening and closing type pump device which can keep an opening and closing valve closed when a pressure feed pump is operated and can keep it open when a pressure feed pump is stopped so as to be able to adjust...
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JP2005282500A |
To provide a fluid pump reducing noise and vibration.A first pressure generation projection section 9 is provided at a position between a suction port 7 and a delivery port 8 on an inner bottom surface of a pump chamber 6. The first pres...
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JP2005220812A |
To provide a motor with a built-in pump having reduced installation cost and power consumption by integrating a pump mechanism with a motor to eliminate the need for installing a pump, separately.The motor with the built-in pump 100 is f...
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JP2005214192A |
To provide a lubricant-less bearing support gas friction pump characterized by a simple structure enabling the pump to be manufactured at low cost.This gas friction pump comprises a fixed pump action structure portion 14 having a rotor s...
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JP2005207278A |
To provide a vortex blower capable of absorbing interference noise by a means excluding a sound absorption equipment.A casing 8 of the vortex blower forms an intake opening 10A continuous to a communicating passage 10B of an intake port ...
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JP3675608B2 |
To provide a compact blower device incorporating two blowers, and incorporating a sound suppressing chamber for discharge gas and cooling gas. A blower device 1 has a box-like housing 10 in which two blowers are arranged up and down. An ...
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JP2005194994A |
To provide a turbo vacuum pump using a circumferential flow blade element, in which a large amount of flow rate exhaust can be implemented in the vacuum range from several Pa to tens of thousands of Pa.The turbo vacuum pump is provided w...
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JP2005180372A |
To prevent a boundary layer generated on the surface of a hub from being locally concentrated and increase the efficiency of a compressor by reducing the thickness of the boundary layer.This impeller 10 of the compressor comprises a plur...
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JP2005171987A |
To provide a small-sized mixed flow fan motor with increase in the static pressure of the fan motor and by motor revolution at a lower noise level than the conventional case, without reducing the wind volume.The small-sized mixed flow fa...
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JP3656374B2 |
To facilitate the assembling of a partitioning member and to reduce the manufacturing cost by pressing a sound absorbing member toward a casing by the partitioning member to hold it, and pressing the partitioning member toward the casing...
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JP3638056B2 |
To provide a fuel pump whose fuel discharge quantity can be regulated through a simple method and its manufacturing method. The thickness of a housing 11 is set up so that in a state where an auxiliary housing 50 is not attached, the mag...
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JP2005076631A |
To provide a structure for a combination pump of small size, enabling pumping to be performed from 1,000 mbar down to 10-8 mbar normally required in some kinds of industries, and suitable for being integrated into vicinity of a vacuum en...
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JP3612221B2 |
A portable working machine provided with a centrifugal air blower, which is featured in that a prime mover (50) for driving the air blower (20) is mounted via a supporting coupling member (30) on a volute case (22) of the air blower (20)...
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JP2004308622A |
To provide a mixed flow impeller capable of achieving inexpensive and efficient article posture without impeding air blow performance of the impeller.In the mixed flow air blower in which a plurality of vanes are arranged around a trunca...
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JP2004308653A |
To provide a fan, especially a combustion air fan of a heater for a vehicle, which has a high conveyance effect despite its extremely simple structure.The fan has a fan housing 12 provided with an inlet range and an outlet range 20 for a...
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JP3584305B2 |
For providing increased pumping speed, increased discharge pressure and decreased operating power a turbomolecular vacuum pump comprises a plurality of axial flow vacuum pumping stages, each of said vacuum pumping stages including a roto...
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JP2004257360A |
To solve problems that as a driving means of an opening and closing valve for a secondary air passage, a means using negative pressure has concern for failure in highland having low atmospheric pressure, a means using discharge pressure ...
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JP3564912B2 |
To prevent reduction of a discharge flow rate at a high air temperature period, in a fuel pump for an internal combustion engine consisting of a regeneration pump. A given range from the starting end of a pump flow passage forms a fuel i...
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JP3548575B2 |
An improved apparatus for transporting and metering particulate material including a transport duct having an inlet, an outlet, and at least one moving surface located therebetween having a downstream facing drive surface. The apparatus ...
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JP2004162659A |
To enable an full-closed operation of a regenerative blower, and to improve cooling effect of a bearing.Rotation of a main shaft 3 of an electric motor rotates an impeller 4 of a blower part 2 to make a plurality of blades 5 create wind,...
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JP2004516401A |
A two stage compressor for a gas turbine engine with a mixed flow first stage, a centrifugal second stage, and an intermediate duct. The mixed flow stage has a mixed rotor rotatable about the central compressor axis with a circumferentia...
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JP3519654B2 |
To provide a pressurizing centrifugal pump allowed to set both a flow rate and flow pressure high as requested, manufactuable with simple and low-cost constitution and miniaturizable. This pressurizing centrifugal pump 1 is so constitute...
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JP2004116509A |
To provide a vortex fluid machine having a simple structure and high efficiency requiring no complicated machine work, which is low in price and is usable in multiple stages.Two and three-stage compression is performed by an axial and le...
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