EP1647716A2 - Pompe de vidange - Google Patents

Pompe de vidange Download PDF

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Publication number
EP1647716A2
EP1647716A2 EP05017835A EP05017835A EP1647716A2 EP 1647716 A2 EP1647716 A2 EP 1647716A2 EP 05017835 A EP05017835 A EP 05017835A EP 05017835 A EP05017835 A EP 05017835A EP 1647716 A2 EP1647716 A2 EP 1647716A2
Authority
EP
European Patent Office
Prior art keywords
motor
rotary vane
opening
pump chamber
lid member
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Withdrawn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
EP05017835A
Other languages
German (de)
English (en)
Other versions
EP1647716A3 (fr
Inventor
Tadashi Kabayama
Masayuki Imai
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.)
Fujikoki Corp
Original Assignee
Fujikoki Corp
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 Fujikoki Corp filed Critical Fujikoki Corp
Publication of EP1647716A2 publication Critical patent/EP1647716A2/fr
Publication of EP1647716A3 publication Critical patent/EP1647716A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • 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
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing

Definitions

  • the present invention relates to a drain pump for draining condensed water or the like in an indoor equipment of an air conditioner disposed on a ceiling of a room or the like.
  • FIG. 8 is an explanatory view showing the structure of a drain pump.
  • the drain pump denoted as a whole by reference number 1 has a pump body 10.
  • the pump body 10 has an inlet port 12 extending downward and facing a drain pan for receiving the drain water, an outlet port 14 extending horizontally from the body, and a pump chamber 16 disposed between the inlet and outlet ports.
  • the outlet port 14 is connected to an exhaust hose 18.
  • the body 10 is formed of resin, and a lid member 30 is fit thereto.
  • a seal member 38 is provided between the body 10 and the lid member 30.
  • An electric motor 60 is provided inside a motor casing 40 formed integrally to a leg portion 42 provided on the lid member 30. Power is fed to the electric motor 60 through a cord 62.
  • the output shaft 64 of a motor 60 is supported by a bearing 66, and the end of the shaft is press-fit to a hole with a bottom formed to the shaft portion 52 of the rotary vane 50.
  • the rotary vane 50 has a shaft portion 52 projecting through an opening 34 at an inner side of a center boss portion 32 of the lid member 30, and a large-diameter vane 54 connected to the shaft portion 52.
  • the outer circumference of the large-diameter vane 54 is covered by a ring member 58 and rotates within the pump chamber 16.
  • the lower portion of the large-diameter vane 54 is connected via a tapered portion 55 to a small-diameter vane 56.
  • the small-diameter vane 56 rotates within an inlet portion 12 of the pump body 10.
  • the water W 1 within the drain pan is pumped up by the small-diameter vane 56 and given centrifugal force by the large-diameter vane 54, then discharged to the exterior through the hose 18.
  • a disk-shaped drain board 70 is provided on the output shaft 64 of the motor in order to prevent the spurted water W 2 from splashing toward the bearing 66 of the motor 60.
  • the space between the shaft portion 52 of the rotary vane 50 and the opening of the lid member 30 is indispensable in this type of drain pump.
  • Japanese Patent Application Laid-Open Publication No. 2002-242873 discloses a drain pump eliminating the drain board.
  • the object of the present invention is to provide a drain pump with reduced number of components and solving the problem of the opening being blocked.
  • the drain pump of an air conditioner comprises, as basic means, a pump body having a pump chamber, an inlet port extending downward from the pump chamber and an outlet port extending horizontally from the pump chamber, a lid member covering an opening of the pump body, a rotary vane disposed inside the pump chamber, a motor casing provided on the lidmember, an electricmotor disposed inside the motor casing, and an output shaft of the motor press-fit to a shaft member of the rotary vane.
  • the lid member has an opening through which the shaftmemberof the rotary vane passes, and an outer circumference wall of the opening through which the motor output shaft of the motor casing passes is shaped to have a tapered portion narrowed toward the rotary vane.
  • the lid member has an opening through which the shaft member of the rotary vane passes, and an outer circumference wall of the opening through which the motor output shaft of the motor casing passes can be shaped to have a circular portion extending toward the rotary vane and a narrowed tapered portion connected to the circular portion.
  • the lid member has an opening through which the shaft member of the rotary vane passes, and an outer circumference wall of the opening through which the motor output shaft of the motor casing passes is shaped to have a circular portion extending toward the rotary vane and a narrow cylindrical portion connected to the circular portion, or the lid member can have a tapered bore narrowing toward a motor output shaft and a cylindrical bore connected to the tapered bore through which the shaft member of the rotary vane passes.
  • the drain pump according to the present invention having the means mentioned above does not require a drain board. Further, water can be prevented from splashing toward the motor, and the problems that may occur from water entering the motor can be prevented.
  • FIG. 1 is an explanatory view showing a first embodiment of the present invention
  • FIG. 2 is an explanatory view showing the relevant portion thereof.
  • a drain pump 1a according to the present embodiment has abasic structure similar to that of FIG. 8, so the maj or components are denoted by the same reference numbers and the detailed explanations thereof are omitted.
  • a space is formed between an opening 134 of a boss portion 132 of a lid member 130 and a shaft portion 52 of a rotary vane 50.
  • An output shaft 64 of an electric motor 60 is press-fit to the shaft portion 52 of the rotary vane, but according to the present embodiment, there is no disk-shaped drain board equipped to the pump.
  • the shape of an outer circumference wall of an opening 142 of a motor casing 140 through which the output shaft 64 of the motor passes is shaped into a tapered portion 144 narrowed toward the rotary vane 50.
  • the water within the inlet port 12 is lifted via a small-diameter vane 56 and givencentrifugal force by a large-diameter vane 54.
  • the water circling inside the pump chamber 16 is shaped to have a substantiallyparabolic cross-section with a free surface formed at the center thereof, and is discharged through an outlet port 14.
  • FIG. 3 is an explanatory view showing another embodiment of the present invention.
  • a drain pump 1b of the present embodiment is equipped with a lid member 230 similar to that of the embodiment illustrated in FIG. 1.
  • the shape of the outer circumference wall of an opening 242 of a motor output shaft 64 of a motor casing 240 is formed to have a circular portion 244 and a narrowed tapered portion 246 connected to the circular portion 244.
  • FIG. 4 is an explanatory view showing yet another embodiment of the present invention.
  • a drain pump 1c according to the present embodiment is equipped with a lid member 330 similar to that of the embodiment illustrated in FIG. 3.
  • the shape of the outer circumference wall of an opening 342 of a motor output shaft 64 of a motor casing 340 is formed to have a circular portion 344 and a narrow cylindrical portion 346 connected to the circular portion 344.
  • FIG. 5 is an explanatory view showing yet another embodiment of the present invention.
  • a drain pump 1d includes a motor casing 440 similar to that of the embodiment illustrated in FIG. 4. That is, the shape of the outer circumference wall of an opening 442 of a motor output shaft 64 of a motor casing 440 is formed to have a circular portion 444 and a narrow cylindrical portion 446 connected to the circular portion 444.
  • the inner diameter of a boss portion 432 of a lidmember 430 has a narrow cylindrical bore 434 opening toward the motor casing and a tapered bore 436 connected to the cylindrical bore 434.
  • FIG. 6 is an explanatory view showing yet another embodiment of the present invention.
  • a drain pump 1e according to the present embodiment includes a motor casing 540 similar to that of the embodiment illustrated in FIG. 4. That is, the shape of the outer circumference wall of an opening 542 of a motor output shaft 64 of a motor casing 540 is formed to have a concaved circular portion.
  • a boss portion 532 of a lid member 530 is formed as a cylindrical bore 536.
  • FIG. 7 is an explanatory view showing yet another embodiment of the present invention.
  • a drain pump 1f has an inner diameter size b of an inner diameter 642 of an opening 644 of the motor output shaft 64 of a motor casing 640 and an outer diameter size a of the shaft member 52 of the rotary vane projected through a boss portion 632 of the lid member 630 which satisfies the following relationship: b ⁇ a
  • the distance c between the inner diameter portion 642 of the opening 644 and the motor output shaft is set within the range of 0.2 through 2.5 mm.
EP05017835A 2004-10-15 2005-08-17 Pompe de vidange Withdrawn EP1647716A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004301283A JP2006112335A (ja) 2004-10-15 2004-10-15 排水ポンプ

Publications (2)

Publication Number Publication Date
EP1647716A2 true EP1647716A2 (fr) 2006-04-19
EP1647716A3 EP1647716A3 (fr) 2007-11-14

Family

ID=34937959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05017835A Withdrawn EP1647716A3 (fr) 2004-10-15 2005-08-17 Pompe de vidange

Country Status (4)

Country Link
EP (1) EP1647716A3 (fr)
JP (1) JP2006112335A (fr)
KR (1) KR20060053280A (fr)
CN (1) CN100520077C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2113669A3 (fr) * 2008-04-28 2013-07-10 Fujikoki Corporation Pompe de drainage

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4909185B2 (ja) * 2007-06-11 2012-04-04 アスモ株式会社 ポンプ装置、ポンプ装置の組み付け方法、車両用ウォッシャ装置
JP5953081B2 (ja) * 2012-03-22 2016-07-13 株式会社不二工機 排水ポンプ
JP6831108B2 (ja) * 2017-07-03 2021-02-17 株式会社不二工機 排水ポンプ
WO2019009122A1 (fr) * 2017-07-03 2019-01-10 株式会社不二工機 Pompe de vidange
CN109185162B (zh) * 2018-10-25 2021-03-19 安徽众源新材料股份有限公司 酸泵及其铜带清洗装置
TWI692586B (zh) * 2019-05-09 2020-05-01 大港泵浦廠興業有限公司 泵浦
TWI694211B (zh) * 2019-05-09 2020-05-21 大港泵浦廠興業有限公司 泵浦
JP7357356B2 (ja) 2020-02-26 2023-10-06 株式会社不二工機 排水ポンプ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408942A (en) * 1967-05-23 1968-11-05 Crowell Designs Inc Bilge pump
GB1514056A (en) * 1975-01-28 1978-06-14 Sarlin Ab Oy E Centrifugal pumps
JP2002242873A (ja) * 2001-02-16 2002-08-28 Saginomiya Seisakusho Inc 空気調和機用排水ポンプ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408942A (en) * 1967-05-23 1968-11-05 Crowell Designs Inc Bilge pump
GB1514056A (en) * 1975-01-28 1978-06-14 Sarlin Ab Oy E Centrifugal pumps
JP2002242873A (ja) * 2001-02-16 2002-08-28 Saginomiya Seisakusho Inc 空気調和機用排水ポンプ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2113669A3 (fr) * 2008-04-28 2013-07-10 Fujikoki Corporation Pompe de drainage

Also Published As

Publication number Publication date
CN100520077C (zh) 2009-07-29
JP2006112335A (ja) 2006-04-27
KR20060053280A (ko) 2006-05-19
EP1647716A3 (fr) 2007-11-14
CN1760553A (zh) 2006-04-19

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