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Patent Searching and Data


Matches 451 - 500 out of 1,520

Document Document Title
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...  
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...  
JP3584305B2  
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 ...  
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...  
JP3548575B2  
JP2004197848A
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 bearin...  
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,...  
JP2004516401A
It is a two-step compressor which has the 1st stage of a 混 style type, the 2nd stage of a centrifugal type, and a middle duct. A centrifugal rotor (2) has a sequence of the direction of a circumference of the centrifugal style braid (1...  
JP2004150298A
To provide a hydrogen pump and a fuel cell system using the hydrogen pump capable of protecting the hydrogen pump from locking due to freezing without lowering pump performance.In the hydrogen pump, hydrogen gas is sucked and exhausted i...  
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...  
JP2004511705A
The pump constituted as a by-pass type pump, especially vacuum Pons consist mainly of the stator (14) of the rotor (16) to drive and stationing. The pumping passage through which it circulates in the direction of a circumference is demar...  
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...  
JP3513367B2
To uniformize the distribution of speeds by inclining a line of intersection of a cylindrical surface around the center of an impeller and a pressure surface (negative pressure surface) of a vane in relation to a rotary shaft, and formin...  
JP2004092478A
To provide a vortex type vacuum pump that can increase the number of rotor rotations of the pump and can improve the pump performance.A slot 12 for generating a vortex is formed on a stator 2 and a projection 31 for forming a seal sectio...  
JP2004060626A
To provide a low-cost product by improving the construction of a blade for generating a swirling current and simplifying the multistage construction while greatly reducing the number of parts of a high-compression-ratio blower and a vacu...  
JP2004003447A
To improve the fan efficiency of an impeller of a fan for an air-conditioner.In an impeller of a diagonal flow fan having a plurality of blades on a substantially truncated conical hub, an outer circumferential side chord length of the b...  
JP2003322095A
To provide a pumping stage for a vacuum pump having an improved geometry enabling an optimum balance between pumping rate and exhaust pressure in the pumping stage.In this pumping stage 1, an axial extension range, that is, a height of a...  
JP2003314500A
To improve cooling performance without increasing noise.This blower 31 is provided with a casing 35 comprising a frame 32, a disk part 33, and a stay 34 laid at the upper and lower parts between the frame 32 and disk part 33. A motor cas...  
JP3460273B2
PURPOSE: To decrease manufacturing by comparatively simplifying the form of a blade, and to improve aerodynamic characteristics so as to obtain high efficiency. CONSTITUTION: A rotating impeller 2 is stored in a circular casing 1 having ...  
JP3448925B2
PURPOSE: To provide a vortex blower which can be widely used as the air supply source such as combustion heater by varying the output characteristics. CONSTITUTION: An impeller 2 where a number of blades 21A, 21B are formed at equal spac...  
JP3428859B2
To provide a motor with a cooling fan, in which noises from the cooling fan is reduced, by making the cooling fan small. A motor body 1 and a cooling fan 5 are joined by a duct 3. A slantwise flowing fan is used as the cooling fan 5. An ...  
JP2003193997A
To improve blowing performance and reduce noise in a vane wheel used for a ventilating and blowing apparatus.The vane wheel 1 is provided with a blade 3 whose cross section ranging from the front edge 3c by 1-15% having a thickness 4 of ...  
JP2003193992A
To improve pump efficiency of a fuel pump.An impeller rotating in a pump casing is approximately disk- shaped. In an area extending along the outer peripheries of two sides, groups of recess parts are formed repeatedly and mutually space...  
JP2003181884A
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 method...  
JP2003161290A
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 str...  
JP2003161291A
To provide a general-purpose vortex blower used for blowing, particularly, a suitably usable vortex blower emphasized on lowering noise and improving efficiency.This vortex blower comprises a blower part 2 composed of the combination of ...  
JP2003161284A
To provide a thin vortex pump capable of being thinned and simplified in structure to obtain a lower cost and a cooling system provided therewith.This vortex pump comprises an impeller 1 comprising a number of blades formed at the extern...  
JP2003155992A
To provide a fuel pump having high sealing property and high pump efficiency, and facilitating assembly.A pump channel 42 forming a pump flow passage 11 is formed in a casing main body 40, and a storage part 43 storing a ring member is f...  
JP2003139094A
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 ...  
JP3406321B2  
JP2003129986A
To provide a motor pump having improved performance by reducing size of a motor and increasing durability, and reducing the leakage of a liquid between a diagonal flow vane and a casing.The motor pump comprises a housing case arranged be...  
JP2003120574A
To provide an efficient motor pump capable of minimizing input power even in the rotation of an impeller at high speed in water.This motor pump comprises a housing case having a connecting passage arranged between a first cap and a secon...  
JP2003097486A
To provide a desired gas supply method by a vortex flow blower by performing feedback control from respective sensors of pressure, a flow rate, and a temperature in the rotational speed control of the vortex flow blower.A motor-driven vo...  
JP2003511596A
(57) The summary centrifugal pump (10) is equipped with the housing which has a fluid entrance port (40) which receives the fluid of initial pressure, and an internal chamber which demarcates a medial axis. While demarcating the 1st and ...  
JP2003083284A
To prevent occurrence of cavitation at vanes of a pump.This pump 10 comprises a main shaft 14 longitudinally rotatably supported inside a casing 12 and plural vanes 16 fixed on the main shaft 14 via hubs 14a arranged with a constant inte...  
JP2003070906A
To provide an actuator for an artificial pump of which the energy efficiency is improved.The actuator is provided with an impeller 120 rotated by driving of a motor 123 and a housing 121 having a first port 121a which sucks or delivers a...  
JP3384565B2  
JP2003056485A
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 ...  
JP2003042090A
To provide a lubricating device for a regenerative type vacuum pump or the like. This invention relates to the lubricating device for an upper side bearing 24 of the regeneration type vacuum pump or the like having a vertical shaft 22 su...  
JP2003042091A
To provide a lubricating device avoiding lack of lubrication of an upper bearing supporting a vertical shaft of a vacuum pump. This invention relates to the lubricating device lubricating an upper side bearing and a lower side bearing of...  
JP2002371992A
To reduce the manufacturing cost of an air pump (blower) while preventing an offset between the shaft center of an impeller and the shaft center of a motor (motor shaft). A motor casing part 228 and a pump casing part 229 are integrated,...  
JP2002544428A
(57) in order to improve the efficiency of a summary reproduction pump type machine and to decrease the time and effort and manufacturing expenses of an assembly simultaneously, It has a runner (4) arranged rotatably in a casing (1, 2), ...  
JP2002364579A
To provide a high specific speed pump capable of enhancing the centrifugal effect for a fluid and operating stably over the whole flow range. An impeller 2 is supported in a casing 4 rotatably and the meridian plane of the blades 10 of t...  
JP2002349468A
To provide a cascade pump capable of preventing leakage of liquid from a discharge area side to a suction area side of an operation passage, noticeably improving pump efficiency, and being operated semipermanently without maintenance to ...  
JP2002339889A
To provide an impeller for a circular flow pump capable of increasing the discharge flow and improving the performance of the pump.A blade 13 dividing a blade groove 12 of the impeller 7 is formed so that an inner part 20a in the radial ...  
JP2002540350A
(57) The side channel compressor which has an entrance port for summary gas (42) and an exit port for compression gas (44) is indicated. The side this channel compressor has a side channel (32) which carries out fluid contact of between ...  
JP2002332988A
To provide a vortex blower capable of providing a large quantity of wind with high pressure and reduced noise.A part of the wall of a casing of the vortex blower is made of a porous material which air can permeate. As a result, a large q...  
JP3342914B2  
JP2002310092A
To provide a low-cost vacuum pump comprising a single part, having a compact structure, and occupying only a small area in the vacuum pump to cover the whole pressure range from the atmospheric pressure to the high vacuum of approximatel...  

Matches 451 - 500 out of 1,520