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JP3905371B2 |
To provide a deaerator which can eliminate the ullage of the volume of sucked water by eliminating the negative load resistance (N.P.S.H.) occurring in a suction opening of a lift pump during withdrawing of the water from a vacuum tank. ...
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JP2007085269A |
To reduce the noise of a drainage pump installed in an air conditioner.This drainage pump comprises a motor 10, an impeller 100a connected to the output shaft of the motor, and a pump housing 50a in which the impeller is stored. The impe...
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JP3897222B2 |
To provide a horizontal shaft pump with a small size, light weight, high pump head, and high efficiency by using a helical blade in an impeller. In the small horizontal shaft pump, plural helical blades 11 are installed in the circumfere...
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JP3890684B2 |
To decrease the idling of an impeller while hardly letting a bubbling phenomenon occur by soon discharging bubbles outside from a pump chamber. An impeller 12 is arranged in a pump chamber provided on a pump main body. The impeller 12 is...
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JP3878689B2 |
To provide a highly watertight intermediate casing forming a multistage pump casing by way of bolting in the axial direction of a pump and its manufacture. Plural intermediate casings 1 installed with an impeller and a guide vane inside ...
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JP3874561B2 |
To reduce noises while securing a head in a pump mounted on air conditioning equipment to discharge drain water. The pump body 30 of a drain pump has a suction port 42 protruding downward and a delivery port 46 protruding sideways. A bla...
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JP3872447B2 |
To enhance rigidity of a blade in multistage fluid machinery provided with the blade which is formed by contiguously integrating a guiding blade with a return blade. This multistage fluid machinery comprises an impeller 13 and a guiding ...
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JP3864271B2 |
To provide a drain pump for an air conditioner reducing generation of noise and having a simple structure. The drain pump comprises a pump body 1 provided with suction port 2 on a lower end part and a discharge port 3 on an upper side pa...
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JP2006291917A |
To increase the head of a pump in a small flow area without largely lowering a pump efficiency in a centrifugal pump having an impeller with a spiral inner flow passage.The impeller is formed in an approximately cylindrical shape, a suct...
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JP2006266245A |
To manufacture a rotor type pump or blower having a smaller size, less energy degradation and no cavitation while eliminating the periodic fluctuation of a flow rate in a liquid transfer system.A disc has 140-150 spiral grooves formed at...
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JP3829417B2 |
To easily mount a magnet and a back plate on an impeller part at a low cost. This pump comprises an impeller part 1 has a rotary shaft 11 on one end part of which a cylinder part 13 formed in the shape of a cylinder with a bottom is moun...
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JP2006250066A |
To provide a convenient and inexpensive pump easily assembled, maintained and inspected, and a liquid supply device equipped with the pump.This pump has a pump part 13 housing two impellers 24, 25 for sucking/discharging liquid in series...
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JP3801251B2 |
To reduce noises of a drainage pump equipped for an air conditioner or the like. A drainage pump 1 has a pump housing 40 having a suction port 42, a pump camber 44, and a blow-out port 46 and a cover 32 and an internal moving vane 50 is ...
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JP2006177184A |
To reduce noise generated during operation of a drain pump installed to an air conditioner.In this drain pump 1a, a rotary blade 60 is arranged inside a pump chamber 14 of a pump main body 10, and a cover member 120 is provided with an o...
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JP3780395B2 |
To provide a drain pump for metering a low flow rate or not without lowering a lift by easily attaching or detaching with a simple structure and facilitating dealing with various specifications. In the drain pump comprising a substantial...
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JP2006112335A |
To provide a drainage pump for an air conditioner in which backflow water at the time of motor-stop is prevented from scattering on the side of the motor.The drainage pump 1a comprises a pump main-body 10 having a pump chamber 16, an inl...
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JP3771794B2 |
To enhance a stability of centrifugal pump characteristics. A stationary flow passage (5) is formed between an inner side surface (3) of a stationary guide blade (2) at an upstream side and an outer side surface (4) of the stationary gui...
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JP2006090134A |
To provide a vertical submerged pump suitably usable in a required place for transferring fluid of a high head (pressure).This vertical submerged pump has an agitating blade by installing the agitating blades 32 on the tip of a rotary sh...
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JP2006090135A |
To provide an aerially installation type horizontal pump suitably usable in a required place for transferring fluid of a high head (pressure).In this aerially installation type horizontal pump, impellers 14 and 16 are coaxially fixed to ...
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JP3754159B2 |
To eliminate that an impeller is brought into sliding-contact with a case, and prevent operating failure by making a fluid flow between the impeller and the case, in a device formed in such a constitution that the fluid is sucked into a ...
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JP2006503687A |
A surface aeration impeller for use in a liquid filled tank. The impeller is rotatable about an axis perpendicular to the static liquid surface. The impeller has a plurality of blades mounted on the underside of a disc or disc-like surfa...
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JP2006029214A |
To reduce water paddling noise of a drain pump installed to an air conditioner.A rotary blade 100 includes a shaft part 110 and an output shaft 12 of an electric motor 10 is inserted in a bottomed hole of the shaft part 110. A plate shap...
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JP2005344563A |
To provide a pump capable of reducing noise generated at a time of drive.A pump housing 50 includes a pump chamber 57 and at least one communication openings 59, 60 opening to the pump chamber 57. A freely rotatable impeller 70 including...
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JP3723556B2 |
To solve the following problem: in the conventional drainage pump incorporated in an air conditioner, cavitation is generated with rotation of an impeller and noise is caused. The vertical-shaft centrifugal pump is provided with the impe...
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JP2005330901A |
To suppress that the concentration of oxygen in a circulating water is increased by air flowing from the storage space of a drive mechanism to the transfer passage side of the circulating water in the pump of a refrigerating apparatus us...
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JP2005325688A |
To provide a technology for improving a pump efficiency by reducing sliding resistance between an impeller and a casing.The fuel pump is equipped with a substantially disk-shaped impeller 20 and a casing 14 for rotatably housing the impe...
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JP3711998B2 |
To reduce operation noise of a drain pump in a low pump head. The drain pump 8 is provided wit a pump casing 81 and an impeller 82. The pump casing 81 has a drain suction opening 81a for sucking drain water in a lower end thereof, and a ...
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JP3708671B2 |
To improve the efficiency of and reduce the weight of a drainage pump having the possible smallest size and simplest structure and remove torque fluctuation caused by frequency by arranging a motor whose rotational speed is gradually inc...
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JP3696953B2 |
To provide a centrifugal pump capable of sucking liquid from the outer peripheral direction of a casing and discharging the sucked liquid from an end surface of the casing. An inlet side opening part 42 formed at a central part of an imp...
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JP2005240766A |
To improve the performance of passing foreign matter in a projecting part without deteriorating the pump efficiency extremely in the projecting part projected toward the inside of a discharge passage formed in a pump casing.In this liqui...
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JP2005240764A |
To prevent foreign matter from entering a clearance gap between an impeller and a pump casing.In this liquid pump including the formed impeller 11 of a spiral passage 38, a flange part 40 projected outward is formed extending over the wh...
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JP2005233192A |
To reduce the operating noises of a drain pump during low pump head.The drain pump 8 comprises a pump casing 81 and an impeller 82. The pump casing 81 has a drain inlet 81a provided at the lower end for sucking drain water and a drain ou...
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JP2005226548A |
To increase a head without enlarging the size, in a drain pump capable of adjusting a delivery flow rate by a water level.This drain pump 108 has a pump casing 181 and an impeller 182. The pump casing 181 has a drain suction port 181a fo...
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JP2005226549A |
To reduce noise of a drain pump, by restraining the expansion of an air layer formed in an impeller of the drain pump to an outer peripheral part of main blades.This drain pump 108 has a pump casing 181 and the impeller 182. The pump cas...
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JP3682068B2 |
A medical pump apparatus including an internally sterile pumping chamber having a flexible diaphragm forming a wall portion and a drive rod extending through the diaphragm in a rotating vane disposed within the pumping chamber. A motor r...
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JP2005171825A |
To provide a fluid conveyance machine of a small and compact structure for enabling high speed operation.A double suction type impeller 21 is disposed to a rotational shaft, and the impeller and a pump casing 31 disposed to surround the ...
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JP3658652B2 |
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JP3657010B2 |
A pump for transferring fragile and aggressive liquids such as human blood and comprising a pumping chamber along with a pair of fluid inlet ports arranged in oppositely disposed relationship on the chamber, and one or more outlet ports ...
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JP3655093B2 |
To provide a calm bearing device where a sliding bearing and a shaft slide smoothly without a lubricant and does not produce a 'striking sound' and a liquid pump. The bearing device 8 is comprised of a shaft 20 and a sliding bearing 40 t...
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JP3647939B2 |
To reduce a noise of a drainage pump by arranging a space in outer peripheral parts of large diameter blades of a rotary blade having platelike large diameter blades and a platelike small diameter blade continuing with these. A rotary bl...
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JP2005121011A |
To provide a device for detecting presence of unbalanced mass of oil in a shaft line, a turbine, a compressor or a rotor of a machine such as a turbo machine before generating vibrations posing risk of damage to a rotor or another part o...
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JP3637426B2 |
To realize the miniaturization of a mixed flow type fluid machine without impairing pump efficiency, cavitation performance and the stabilization of head discharge curve. A mixed flow type fluid machine is composed of the first stage mix...
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JP3626682B2 |
A pump for transferring fragile and aggressive fluids such as human blood and comprising a chamber along with one or more fluid inlet ports (16, 17) arranged in oppositely disposed relationship on the chamber, and at least one outlet por...
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JP2005036797A |
To provide a multistage diffuser casing having excellent accuracy and workability and its manufacturing method.A diffuser guide vane (single body) (V) is casted, the casted diffuser guide vane (single body) (V) is processed, the processe...
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JP3611442B2 |
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JP2004332636A |
To provide a helical groove pump of high efficiency and high durability, of a simple structure, small and compact, and good in manufacturability.The helical groove pump is provided with a rotary disk 16 rotating in a handling liquid, a d...
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JP2004324561A |
To provide a water pump capable of preventing noise generation, a short lifetime, coming-off of a belt by making variation of a gap due to assembly of a ball bearing small and making an axial gap and an angular gap small.In this water pu...
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JP3589775B2 |
To provide a multistage pump which decreases a number of part items, eliminates necessity for a time in assembly and prevents even generation of crevice corrosion and stress corrosion, with a life characteristic excellent further with ma...
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JP3587544B2 |
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JP3587750B2 |
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