EP1293680A1 - Absaugpumpe - Google Patents

Absaugpumpe Download PDF

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Publication number
EP1293680A1
EP1293680A1 EP01941029A EP01941029A EP1293680A1 EP 1293680 A1 EP1293680 A1 EP 1293680A1 EP 01941029 A EP01941029 A EP 01941029A EP 01941029 A EP01941029 A EP 01941029A EP 1293680 A1 EP1293680 A1 EP 1293680A1
Authority
EP
European Patent Office
Prior art keywords
drain
shaft
drain water
pump
rectifying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01941029A
Other languages
English (en)
French (fr)
Other versions
EP1293680A4 (de
Inventor
Akira Kasuya
Katsuya Taguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saginomiya Seisakusho Inc
Original Assignee
Saginomiya Seisakusho Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saginomiya Seisakusho Inc filed Critical Saginomiya Seisakusho Inc
Publication of EP1293680A1 publication Critical patent/EP1293680A1/de
Publication of EP1293680A4 publication Critical patent/EP1293680A4/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2288—Rotors specially for centrifugal pumps with special measures for comminuting, mixing or separating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2238—Special flow patterns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate

Definitions

  • the present invention relates to a drain pump, and more specifically to a drain pump suitable for discharging a drain, which condenses on the surface of a heat exchanger in an interior unit of an air conditioner and the like.
  • the air conditioner When an air conditioner is operated in its cooling mode, a great amount of the condensation occurs on the surface of a heat exchanger in an interior unit of the air conditioner, therefore the drain must be discharged to outside the air conditioner.
  • the air conditioner is provided with a drain pan for collecting the drain at the bottom thereof, to which a drain pump is connected, and the drain pump is operated in response to a need, thereby the drain is discharged outside the air conditioner or the room.
  • Various types of the drain pump have been used for this purpose.
  • the drain pump consists of a pump body 100 and an impeller 200 rotatably disposed in a pump room 120 of the pump body 100.
  • the pump body 100 has a cover 101 for covering the top thereof and the pump room 120 consisting of a cylindrical housing 110.
  • the pump room 120 is provided with a inlet pipe 140, the bottom end of which forms a inlet 150, at the bottom center thereof and an outlet pipe 160, which extends in the horizontal direction to form an outlet 170, at the upper side thereof.
  • a motor 180 is connected to the upper part of,the cover 101.
  • the impeller 200 has a shaft 210, which is provided with a hole for receiving an output shaft of the motor 180 at the upper end thereof, a plurality of plate-shaped main wings 220 formed radially from the shaft 210, an assistant blade 290 formed below the main wings 220, and a drain water guide 250, which is connected to the outer circumference of the main wings 220 and the assistant blade 290 and formed away from the shaft 210 having a gap therebetween.
  • the lower surface of the drain water guide 250 is formed as an inverse circular cone 240.
  • a guide surface 280 which is continuously inclined upward from a vertical surface 260 at the inverse side relative to the direction of rotation of the impeller 200 up to a vertical surface 270, of the adjacent main wing 220, at the same side relative to the direction of rotation of the impeller 200.
  • An assistant blade 290 is formed at the lower portion of the drain water guide 250.
  • the drain in the drain pan (not shown), which adjoins a bottom opening of the inlet pipe 140 of the pump body 100, is sucked from the inlet 150 into the pump room 120, stirred by the rotation of the assistant blade 290, and rises along the inner surface of the inverse circular cone 240 of the pump room 120 due to a given centrifugal force.
  • the open air is introduced into the pump room 120 from an opening 111 located at the upper center of the cover 101, the drain water in the pump room 120 forms a free surface, the center of which forms an approximate parabolic surface.
  • the drain water which is stirred by the rotation of the assistant blade 290 and rises along the inner surface of the inverse circular cone 240 of the pump room 120 due to a given centrifugal force, is guided by the inverse circular cone 240 and rises along the inner surface of the pump room 120, then rises between the drain water guide 250 and the inner wall of the pump room 120.
  • the drain water is stirred by the main wings 220 with a high speed, resulting in that a large energy is given to the drain water, then the energy is converted to a pressure energy for pressing the inner wall of the pump room 120 and then, the drain water is discharged from the outlet 170 to the outside.
  • the drain water is stirred by the main wings 220 in a state that the drain water is mixed with air, resulting in that the air bubbles occur.
  • the load is small upon a low-pump head operation
  • the free surface in the pump room is extended to the outside in the radius direction by the centrifugal force based on that the pressure in the pump room decreases and that the number of revolution of the main wings increases.
  • the free surface is disturbed by the main wings 220, causing the occurring of the air bubbles.
  • the air bubbles collide against the main wings 220 and the inner wall of the pump room, causing the increase of the noise and vibration.
  • the drain water-rectifying circle cooperates with the drain water guide formed inside the drain water-rectifying circle so as to prevent air bubbles from occurring in the drain water, thereby enabling the reduction in the noise and vibration.
  • the drain water-rectifying circle in which the drain water guide is formed, is provided at the outer circumference of the blades, therefore the free surface extended to the outside in the radius direction due to the centrifugal force is prevented from being stirred by the outer circumference of the blades, thereby the air bubbles are prevented from occurring.
  • the drain water can be smoothly discharged by the blades in the presence of the drain water guide.
  • Figures 1 to 4 illustrate a first preferred embodiment of the present invention, in which Fig. 1 shows a side elevation illustrating the whole of a drain pump with a sectional view of a part of the drain pump, Fig. 2 shows a plan view of an impeller, Fig. 3 shows a perspective view of the impeller, and Fig. 4 shows a front elevation of the impeller.
  • the drain pump according to the first preferred embodiment has a pump body 2 having almost the same construction as the conventional drain pump described above. That is, the pump body 2 having a cylindrical pump room 1, an inner surface of which is a hollow, has an inlet 3 at the bottom, and an outlet 4 at the upper side, an outlet pipe (not shown) being connected to the outlet 4.
  • a cap 8 is fixed to an upper opening of the pump body 2 by a snap-fit (not shown) through an O-ring 6.
  • the center of the cap 8 is provided with a draining 9, the upper center of which is provided with an opening 10, the lower end of which is provided with a drain surface 11, the inner surface of which is bent downward.
  • the upper surface of the cap 8 is provided with a column 12, to which a motor 13 is fixed.
  • a rotating shaft 14 of the motor 13 passes through the opening 10 of the cap 8 protruding downward and is fixed to an impeller 20 (explained later on).
  • the impeller rotates in the pump room 1 through the rotating shaft 14.
  • a drain board 15 is attached above the opening 10 of the rotating shaft 14. The return water in the drain hose upon halting of the operation of the pump rises from the top of the impeller 20 along the outer circumference of the rotating shaft 14, thereby preventing the drain water from entering into the motor 13.
  • the impeller 20 is provided with a shaft 21 connected to the rotating shaft 14 of the motor 13 and eight blades (main wings) 22, which extends toward the axis of the shaft 21 and the inner end of which is disposed spaced from the shaft 21.
  • An assistant blade 29, in which two rectangular plates are joined together crosswise, is connected to the bottom of the shaft 21 along the direction of the axis of the shaft 21.
  • the top end of the shaft 21 is provided with a hole 21a, into which the bottom end of the rotating shaft 14 can be inserted.
  • a numerical number 30 indicates a ring-shaped drain water-rectifying circle, which is formed on the outer circumference of the blades 22 being spaced a specific radius from the rotating shaft of the motor, and the water-rectifying circle 30 is formed on the outer circumference of the blades 22 arising from the outer periphery of the drain guide surface 24 and being spaced a specific radius from the shaft 21.
  • a drain water guide 25 is formed on the inner surface of the drain water-rectifying circle 30.
  • the drain water-rectifying circle 30 is formed by a ring-shaped circumferential wall having the same height as that of a vertical surface 27 (explained later on) and the drain water guide 25 is integrally formed inside the drain water-rectifying circle 30.
  • the drain water guide 25 is formed on the inner surface of the ring-shaped drain water-rectifying circle 30 and has a guide surface 28 formed on the upper surface of the drain water guide 25.
  • the guide surface 28 is formed continuously inclined upward from a vertical surface 26 of the blade 22 at the inverse side relative to the direction of rotation of the impeller 20 up to a vertical surface 27 of the adjacent blade 22 at the same side relative to the direction of rotation of the impeller 20.
  • the drain water guide 25 consists of the vertical surfaces 26 and 27 and the guide surface (inclined surface) 28, which is continuously inclined upward from the vertical surface 26 of the blade 22 at the inverse side relative to the direction of rotation of the impeller 20 up to the vertical surface 27 of the adjacent blade 22 at the same side relative to the direction of rotation of the impeller 20.
  • the guide surface 28 there are eight guide surfaces 28.
  • each blade is disposed spaced from the shaft 21. That is, inside the ring-shaped drain water guide 25, provided are the eight blades 22, each of which extends toward the axis of the shaft 21 and the inner end of each of which is situated spaced from the shaft 21.
  • Each lower end of the eight blades 22 is connected to each other by a doughnut-shaped drain guide plate formed in an approximate inverse circular cone-shape as a whole, thereby constructing the drain guide surface 24, and the hollow 23 is formed between the drain guide surface 24 and the assistant blade 29.
  • the inner end periphery of the drain guide surface 24 is held by the assistant blade 29.
  • the bottom surface 1a (see Fig. 1) of the pump room 1 is formed in an approximate inverse circular cone-shape similar to the shape of the drain guide surface 24.
  • the ring-shaped drain water guide 25 is formed inside the drain water-rectifying circle 30.
  • the drain water-rectifying circle 30 is formed spaced a specific radius from the shaft 21, the drain water guide 25 is formed inside the drain water-rectifying circle 30, the drain water guide 25 is provided with the guide surface 28, which is continuously inclined upward from the vertical surface 26 of the blade 22 at the inverse side relative to the direction of rotation of the impeller 20 up to the vertical surface 27 of the adjacent blade 22 at the same side relative to the direction of rotation of the impeller 20.
  • the drain guide surface 24, the drain water guide 25, the drain water-rectifying circle 30, the blades 22, the assistant blade 29, and the shaft 21 are formed by an integral molding of synthetic resin to constitute the impeller 20.
  • the drain water which is stirred by the assistant blade 29 and rises along the inner surface of the pump room 1, is guided by the drain guide surface 24 below the drain water guide 25 formed above the assistant blade 29 and rises along the inner surface of the pump room 1.
  • the drain water-rectifying circle 30 in which the drain water guide 25 is formed on the outer circumference of the blade 22, the free surface extended toward the outside in the radius direction due to the centrifugal force is not disturbed by the blades 22, so that air bubbles are prevented from occurring in the drain water, thereby enabling the reduction in the noise and vibration.
  • the drain water guide 25 functions so as to prevent the flow of the drain water from being disturbed when the flow of the drain water by the blades 22 collides against the drain water-rectifying circle 30, thereby the smooth draining can be carried out.
  • the drain water-rectifying circle 30 cooperates with the drain water guide 25 formed inside the drain water-rectifying circle 30 so as to prevent air bubbles from occurring in the drain water, thereby enabling the reduction in the noise and vibration.
  • the drain water guide 25 functions so as to prevent the flow of the drain water from being disturbed when the flow of the drain water by the blades 22 collides against the drain water-rectifying circle 30, thereby the smooth draining can be carried out.
  • the drain pump of the preferred embodiment is set in an anechoic box (an echo-free box) on the condition of AC 200 volts and 50/60 Hz, and the noise was measured by using a noise meter, a microphone of which is situated 50 cm above the tester, with changing the pump head.
  • the results are shown in Figs. 5A and 5B, in which Fig. 5A shows the result for an operation at 50 Hz while Fig. 5B shows the result for an operation at 60 Hz, and each curve A indicates the noise of the drain pump of the preferred embodiment while each curve B indicates the noise of the conventional drain pump described above.
  • Figures 6A and 6B are graphs illustrating experimental results for comparing the pump head balance (a relationship between the pump head and the sound pressure) in the drain pump of the preferred embodiment of the present invention with the pump head balance in the conventional drain pump by a similar test to that of the comparison of the noise described above, in which Fig. 6A shows the result for an operation at 50 Hz while Fig. 6B shows the result for an operation at 60 Hz, and each curve A indicates the pump head balance of the drain pump of the preferred embodiment while each curve B indicates the pump head balance of the conventional drain pump described above.
  • the second preferred embodiment is similar to the first preferred embodiment in a point that the impeller 20 has eight blades 22, but is different therefrom in a point that the inner end of each blade 22 extends up to the shaft 21.
  • each construction of the drain guide surface 24, drain water guide 25, drain water-rectifying circle 30 and assistant blade 29 is the same as the corresponding construction in the first preferred embodiment.
  • the operation and effects are the same as those of the first preferred embodiment.
  • the third preferred embodiment is similar to the first preferred embodiment in a point that the impeller 20 extends toward the axis of the shaft 21 and has the eight blades 22, the inner end of each of which is disposed spaced from the shaft 21, a cross-shaped assistant blade 29 is connected to the bottom of the shaft 21 along the direction of the axis of the shaft 21, a drain guide surface 24 is provided, which is connected to each bottom of the blades 22 and has a hollow 23 between the drain guide surface 24 and the assistant blade 29, the ring-shaped drain water-rectifying circle 30 is formed on the outer circumference of the blades 22 being spaced a specific radius from the rotating shaft 21 of the motor, and the drain water guide 25 is formed on the inner surface of the drain water-rectifying circle 30.
  • the third preferred embodiment is different from the first preferred embodiment in a point that the drain water guide 25 consists of a plurality of concave grooves 25a, each of which is formed on the inner surface of the drain water-rectifying circle 30 and extends in parallel with the axis of the shaft 21.
  • the drain pump of the third preferred embodiment has similar effects to those of the first preferred embodiment, and in addition, it can reduce the manufacture cost since the process for making the inclined surfaces can be omitted.
  • the fourth preferred embodiment is similar to the first preferred embodiment in a point that the impeller 20 extends toward the axis of the shaft 21 and has the eight blades 22, the inner end of each of which is disposed spaced from the shaft 21, a cross-shaped assistant blade 29 is connected to the bottom of the shaft 21 along the direction of the axis of the shaft 21, a drain guide surface 24 is provided, which is connected to each bottom of the blades 22 and has a hollow 23 between the drain guide surface 24 and the assistant blade 29, the ring-shaped drain water-rectifying circle 30 is formed on the outer circumference of the blades 22 being spaced a specific radius from the rotating shaft 21 of the motor, and the drain water guide 25 is formed on the inner surface of the drain water-rectifying circle 30.
  • the fourth preferred embodiment is different from the first preferred embodiment in a point that the drain water guide 25 consists of a plurality of convex grooves 25b, each of which is formed on the inner surface of the drain water-rectifying circle 30 and extends in parallel with the axis of the shaft 21.
  • the drain pump of the fourth preferred embodiment has similar effects to those of the first preferred embodiment, and in addition, it can reduce the manufacture cost since the process for making the inclined surfaces can be omitted.
  • the fifth preferred embodiment is similar to the first preferred embodiment in a point that the impeller 20 extends toward the axis of the shaft 21 and has the eight blades 22, the inner end of each of which is disposed spaced from the shaft 21, a plate-shaped assistant blade 29 is connected to the bottom of the shaft 21 along the direction of the axis of the shaft 21, a drain guide surface 24 is provided, which is connected to each bottom of the blades 22 and has a hollow 23 between the drain guide surface 24 and the assistant blade 29, the ring-shaped drain water-rectifying circle 30 is formed on the outer circumference of the blades 22 arising from the outer periphery of the drain guide surface 24 and being spaced a specific radius from the rotating shaft 21 of the motor, and the drain water guide 25 is formed on the inner surface of the drain water-rectifying circle 30 and consists of a plurality of the inclined surfaces 28 formed on the inner surface of the drain water-rectifying circle 30 having a space therebetween with each other.
  • the fifth preferred embodiment is different from the first preferred embodiment in a point that the assistant blade 29 consists of a triangular plate 29a, the width of which decreases with going downward.
  • the shape of the inlet 3 of the pump body 2 is formed to be inverse circular truncated cone-shape 3a to match with the shape of the assistant blade 29.
  • the drain pump of the fifth preferred embodiment has a similar effects to those of the first preferred embodiment, and in addition, since the assistant blade 29 consists of a triangular plate 29a, the width of which decreases with going downward, therefore the centrifugal force that acts on the drain water, which rises along the inner surface of the pump room 1 due to the rotation of the assistant blade 29, gradually increases as the drain water rises, thereby enhancing the discharging capability of the drain pump.
  • the sixth preferred embodiment is a modification of the first preferred embodiment and different from the first preferred embodiment only in a point that each of the alternate four blades 22a out of the eight blades 22, which constitutes the impeller 20, is connected to the shaft 21 in such a manner that each inner end of the blade 22a is extended up to the shaft 21.
  • the drain pump of the sixth preferred embodiment has similar effects to those of the first preferred embodiment.
  • the gap between the inner wall of the pump body 2 and the impeller 20 is not more than 3 mm and preferably from 1.5 mm to 2.0mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
EP01941029A 2000-06-21 2001-06-13 Absaugpumpe Withdrawn EP1293680A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2000185549A JP3511044B2 (ja) 2000-06-21 2000-06-21 ドレン排水ポンプ
JP2000185549 2000-06-21
PCT/JP2001/005008 WO2001098667A1 (fr) 2000-06-21 2001-06-13 Pompe de drainage

Publications (2)

Publication Number Publication Date
EP1293680A1 true EP1293680A1 (de) 2003-03-19
EP1293680A4 EP1293680A4 (de) 2005-10-19

Family

ID=18685858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01941029A Withdrawn EP1293680A4 (de) 2000-06-21 2001-06-13 Absaugpumpe

Country Status (5)

Country Link
EP (1) EP1293680A4 (de)
JP (1) JP3511044B2 (de)
KR (1) KR100720377B1 (de)
CN (1) CN1193172C (de)
WO (1) WO2001098667A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102454628A (zh) * 2011-12-30 2012-05-16 新昌县富士精工科技有限公司 空调排水泵叶轮
CN103470538A (zh) * 2013-09-12 2013-12-25 昆山市巴城镇顺拓工程机械配件厂 一种低噪排水泵

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006029214A (ja) 2004-07-16 2006-02-02 Fuji Koki Corp 排水ポンプ
KR100970822B1 (ko) * 2004-09-30 2010-07-16 가부시키가이샤 사기노미야세이사쿠쇼 입축형 원심펌프 및 그 로터 및 공기 조화 장치
US8439642B2 (en) * 2007-06-01 2013-05-14 The Gorman-Rupp Company Pump and pump impeller
KR100937927B1 (ko) * 2008-02-01 2010-01-21 경남중천전화(주) 배수펌프용 임펠러
JP2009293852A (ja) * 2008-06-05 2009-12-17 Fuji Electric Retail Systems Co Ltd 蓄氷式飲料冷却装置
JP5227370B2 (ja) * 2010-07-09 2013-07-03 パナソニック株式会社 ドレンポンプ
JP5889051B2 (ja) * 2011-08-30 2016-03-22 株式会社不二工機 排水ポンプ
CN103899541B (zh) * 2012-12-28 2016-03-02 常州雷利电机科技有限公司 排水泵
CN105464995B (zh) * 2014-09-26 2019-01-11 株式会社不二工机 排水泵
JP6427428B2 (ja) * 2014-09-26 2018-11-21 株式会社不二工機 排水ポンプ
JP2017106388A (ja) * 2015-12-10 2017-06-15 株式会社鷺宮製作所 ポンプロータ、および、それを備える排水ポンプ
CN113351831B (zh) * 2021-05-06 2022-12-23 江山市通联泵业成套有限公司 一种精度高、一体成型的水泵叶轮
KR20220162988A (ko) 2021-06-02 2022-12-09 주식회사 에스 씨디 드레인 펌프
CN114923218B (zh) * 2022-03-29 2023-08-18 青岛海信日立空调系统有限公司 空调器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08189662A (ja) * 1995-01-12 1996-07-23 Fuji Koki Seisakusho:Kk 排水ポンプ
JPH0979171A (ja) * 1995-09-14 1997-03-25 Fuji Koki:Kk 排水ポンプ
JPH09145085A (ja) * 1995-11-24 1997-06-06 Saginomiya Seisakusho Inc ドレン排水ポンプ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3910665B2 (ja) 1996-10-11 2007-04-25 株式会社不二工機 排水ポンプ
JP2000046363A (ja) * 1998-05-25 2000-02-18 Saginomiya Seisakusho Inc ドレン排水ポンプ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08189662A (ja) * 1995-01-12 1996-07-23 Fuji Koki Seisakusho:Kk 排水ポンプ
JPH0979171A (ja) * 1995-09-14 1997-03-25 Fuji Koki:Kk 排水ポンプ
JPH09145085A (ja) * 1995-11-24 1997-06-06 Saginomiya Seisakusho Inc ドレン排水ポンプ

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 11, 29 November 1996 (1996-11-29) & JP 08 189662 A (FUJI KOKI SEISAKUSHO:KK), 23 July 1996 (1996-07-23) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07, 31 July 1997 (1997-07-31) -& JP 09 079171 A (FUJI KOKI:KK), 25 March 1997 (1997-03-25) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10, 31 October 1997 (1997-10-31) -& JP 09 145085 A (SAGINOMIYA SEISAKUSHO INC), 6 June 1997 (1997-06-06) *
See also references of WO0198667A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102454628A (zh) * 2011-12-30 2012-05-16 新昌县富士精工科技有限公司 空调排水泵叶轮
CN103470538A (zh) * 2013-09-12 2013-12-25 昆山市巴城镇顺拓工程机械配件厂 一种低噪排水泵

Also Published As

Publication number Publication date
EP1293680A4 (de) 2005-10-19
WO2001098667A1 (fr) 2001-12-27
JP3511044B2 (ja) 2004-03-29
CN1193172C (zh) 2005-03-16
KR100720377B1 (ko) 2007-05-21
JP2002005083A (ja) 2002-01-09
KR20020035121A (ko) 2002-05-09
CN1383476A (zh) 2002-12-04

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