EP1617084B1 - Drainage pump - Google Patents
Drainage pump Download PDFInfo
- Publication number
- EP1617084B1 EP1617084B1 EP05013455.0A EP05013455A EP1617084B1 EP 1617084 B1 EP1617084 B1 EP 1617084B1 EP 05013455 A EP05013455 A EP 05013455A EP 1617084 B1 EP1617084 B1 EP 1617084B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vane
- dish
- thin wall
- drainage pump
- wall portion
- 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.)
- Expired - Fee Related
Links
Images
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
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/12—Pumps with scoops or like paring members protruding in the fluid circulating in a bowl
-
- 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
- F04D29/2205—Conventional flow pattern
- F04D29/2216—Shape, geometry
-
- 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
- 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
- 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
-
- 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 drainage pump, especially a drainage pump provided in an air conditioner.
- the drainage pump comprises a pump main body or housing having a suction inlet at the bottom, an opened upper portion and a discharge outlet at the side, which houses a vane disposed rotatably therein, and the vane is rotated by a motor fixed to the upper portion of the housing opening via a cover.
- the drive shaft of the motor passes rotatably through a through hole formed to the cover and connected to a shaft portion of the vane, so that when the motor is driven to rotate the vane, the drain water collected in the drain pan is sucked in through the lower end of the vane in the suction inlet, pumped up by centrifugal force along the inner surface of the housing and discharged to the exterior through the discharge outlet of the casing.
- the operation noise of the indoor unit is required to be as small as possible.
- the EP 0 760 428 A discloses a drainage pump comprising a pump housing, a motor, a rotary vane, the housing having a suction inlet into which a plate-shaped small diameter vane is inserted. Moreover the housing comprises a discharge outlet.
- the EP 1024 297 A2 discloses a drainage pump which is also concerned with a reduction of the noise generated when starting the pump.
- the present invention aims at providing a drainage pump having a reduced operation sound.
- the drainage pump according to the present invention comprises the features of claim 1.
- the present invention having the above arrangement is capable of reducing the water paddling noise of the drainage pump.
- FIG. 1 is an explanatory view of a drainage pump to which the present invention is applied.
- a drainage pump the whole of which being denoted by reference number 1, comprises an electricmotor 10, and power to the electric motor 10 is fed via a lead wire 11.
- the electric motor 10 is supported by a bracket 20, and the lower end of the bracket 20 is connected to a lid member 30 mounted on an upper portion of a pump housing (pump main body) 50.
- the housing 50 is formed of plastic, and inside the housing is defined a pump chamber 52.
- a suction inlet 60 and a discharge outlet 70 communicated with the pump chamber 52 are formed integrally with the housing 50.
- a rotary vane 100 is disposed inside the pump chamber 52, and the opening of the pump chamber 52 is covered with the lid member 30.
- a seal member 40 is inserted between the housing 50 and the lid member 30, preventing leakage of drain water from the pump chamber.
- FIG. 2 is an explanatory view showing the details of the rotary vane 100.
- the rotary vane 100 has a shaft portion 110 with a hole having a bottom portion, and in the hole is inserted an output shaft 12 of the electricmotor 10.
- Aplate-shaped large-diameter vane 120 extending in the radial direction from the shaft portion 110 has its outer circumference end connected to a cylindrical ring member 200.
- the large-diameter vane 120 is connected via a tapered connecting portion 130 to a small-diameter vane 140.
- the drainage pump is equipped with four large-diameter vanes 120 and small-diameter vanes 140.
- the lower end of the large-diameter vane 120 is connected to a dish-like member 160.
- An opening 150 is formed to the center area of the dish-like member 160, and the drainage water entering from the suction inlet is sent via the small-diameter vane 140 and the connecting portion 130 toward the large-diameter vane 120.
- auxiliary large-diameter vanes 122 are provided inside the ring member 200.
- the inner circumference end of the auxiliary large-diameter vane 122 extends close to the outer edge of the opening 150 of the dish-like member 160.
- FIGS. 3 through 6 illustrate various examples of the shape of the ring member 200 of the rotary vane according to the present invention, which are shown by cross-sectional views taken at line A-A of FIG. 2 .
- FIG. 3(a) illustrates an example not representing the present invention in which the upper end of the ring member 200 is formed as a thin wall portion 201. which is connected via a protruded curved wall 201a to the
- FIG 3(b) illustrates an example not representing the present invention in which the upper end of the ring member 200 is formed as a thin wall portion 202, which is connected via a step portion 202a to the dish-like member 160.
- FIG. 3(c) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as a thin wall portion 203, which is connected via a chamfered portion 203a to the dish-like member 160.
- FIG. 3(d) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as a thin wall portion 204, which is connected via a tapered portion 204a to the dish-like member 160.
- FIG. 3(e) illustrates an example representing an embodiment of the present invention in which the outer circumference of the upper end portion of the ring member 200 is cut away to form a thin wall portion 205, which is connected via a protruded curved wall 205a to the dish-like member 160.
- Cutting away the wall thickness of the outer circumference of the upper end portion to form the thin wall portion can be applied to all other examples described above.
- FIG. 4(a) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as a thin wall portion 211, which is connected via a taperedportion 211a to the dish-like member 160.
- FIG. 4(b) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as a thin wall portion 212 having a height lower than the height of the large-diameter vane, which is connected via a protruded curved wall 212a to the dish-like member 160.
- FIG. 4(c) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as a thin wall portion 213, which is connected via a stepped and tapered portion 213a to the dish-like member 160.
- FIG. 4(d) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as a thin wall portion 214, which is connected via a protruded curved wall 214a to the dish-like member 160.
- FIG. 4(e) illustrates an example representing an embodiment the present invention in which the outer circumference wall of the upper end portion of the ring member 200 is cut away to form a thin wall portion 215, which is connected via a tapered portion 215a to the dish-like member 160.
- Cutting away the wall thickness of the outer circumference of the upper end portion to form the thin wall portion can be applied to all other examples described above.
- FIG. 5(a) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as a thin wall portion 221, which is connected via a taperedportion 221a to the dish-like member 160.
- FIG. 5(b) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as a thin wall portion 222, which is connected via a recessed curved wall 222a to the dish-like member 160.
- FIG. 5(c) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as a thin wall portion 223, which is connected via a taperedportion 223a to the dish-like member 160.
- FIG. 5(d) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as an upward tapered thin wall portion 224, which is connected via a protruded curved wall 224a to the dish-like member 160.
- FIG. 5(e) illustrates an example representing an embodiment of the present invention in which the outer circumference wall of the upper end portion of the ring member 200 is cut away to form a thin wall portion 225, which is connected via a tapered portion 225a to the dish-like member 160.
- Cutting away the wall thickness of the outer circumference of the upper end portion to form the thin wall portion can be applied to all other examples described above.
- FIG. 6(a) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as an upward tapered thin wall portion 231, which is connected via a protruded curved wall 231a to the dish-like member 160.
- FIG. 6(b) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as an upward tapered thin wall portion 232, which is connected via a protruded curved wall 232a to the dish-like member 160.
- FIG. 6(c) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as a thin wall portion 233 with an inner curved surface, which is connected via a protruded curved wall 233a to the dish-like member 160.
- FIG. 6(d) illustrates an example not representing the present invention in which the upper end portion of the ring member 200 is formed as a thin wall portion 234 with an outer curved surface, which is connected via a protruded curved wall 234a to the dish-like member 160.
- FIG. 6(e) illustrates an example representing an embodiment of the present invention in which the outer circumference wall of the upper end portion of the ring member 200 is cut away to form a thin wall portion 235, which is connected via a protruded curved wall 235a to the dish-like member 160.
- Cutting away the wall thickness of the outer circumference of the upper end portion to form the thin wall portion can be applied to all other examples described above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Geometry (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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004209377A JP2006029214A (ja) | 2004-07-16 | 2004-07-16 | 排水ポンプ |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1617084A1 EP1617084A1 (en) | 2006-01-18 |
EP1617084B1 true EP1617084B1 (en) | 2013-05-08 |
Family
ID=34937602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05013455.0A Expired - Fee Related EP1617084B1 (en) | 2004-07-16 | 2005-06-22 | Drainage pump |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1617084B1 (ja) |
JP (1) | JP2006029214A (ja) |
KR (1) | KR101185830B1 (ja) |
CN (1) | CN100429409C (ja) |
TW (1) | TWI359910B (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101176457B1 (ko) * | 2006-12-05 | 2012-08-30 | 삼성전자주식회사 | 공기조화기 및 그 제어방법 |
US8747071B2 (en) * | 2009-07-07 | 2014-06-10 | Fujikoki Corporation | Drain pump |
JP2011069257A (ja) * | 2009-09-24 | 2011-04-07 | Fuji Koki Corp | 排水ポンプ |
CN102052348B (zh) * | 2009-11-07 | 2013-08-14 | 浙江三花股份有限公司 | 液体排出装置 |
CN101985942A (zh) * | 2010-11-18 | 2011-03-16 | 姜堰市德华船用泵业制造有限公司 | 船用切线泵 |
KR101601350B1 (ko) * | 2011-08-30 | 2016-03-08 | 가부시기가이샤 후지고오키 | 배수 펌프 |
JP5889051B2 (ja) * | 2011-08-30 | 2016-03-22 | 株式会社不二工機 | 排水ポンプ |
CN104675745B (zh) * | 2013-11-27 | 2017-09-29 | 浙江三花制冷集团有限公司 | 一种水泵及其叶轮 |
JP6427428B2 (ja) | 2014-09-26 | 2018-11-21 | 株式会社不二工機 | 排水ポンプ |
JP6375285B2 (ja) * | 2015-11-18 | 2018-08-15 | 株式会社不二工機 | 排水ポンプ |
CN106382687B (zh) * | 2016-10-31 | 2021-10-26 | 广东美的制冷设备有限公司 | 窗式空调器 |
TWI711765B (zh) * | 2019-03-29 | 2020-12-01 | 合利美股份有限公司 | 具有安裝結構的空調裝置用之排水泵 |
CN110296084B (zh) * | 2019-07-09 | 2020-08-25 | 永嘉企达知识产权咨询有限公司 | 一种立式离心泵 |
CN114087207A (zh) * | 2020-08-24 | 2022-02-25 | 浙江三花商用制冷有限公司 | 一种流体排出装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002005083A (ja) * | 2000-06-21 | 2002-01-09 | Saginomiya Seisakusho Inc | ドレン排水ポンプ |
JP2003293976A (ja) * | 2002-04-08 | 2003-10-15 | Taisan Kogyo Kk | 排水ポンプ |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2735508C2 (de) * | 1977-08-06 | 1985-03-28 | Robert Bosch Gmbh, 7000 Stuttgart | Waschvorrichtung für Abdeckscheiben von Kraftfahrzeugleuchten |
WO1985002594A1 (en) * | 1983-12-09 | 1985-06-20 | Leslie Graham Church | Ring propeller |
JPH05187371A (ja) * | 1992-01-13 | 1993-07-27 | Hitachi Ltd | スクロール圧縮機とスクロールラップ加工用エンドミル |
WO1995009984A1 (en) * | 1993-10-07 | 1995-04-13 | Haemonetics Corporation | Centrifugal blood pump with impeller blades forming a spin inducer |
JP3524611B2 (ja) * | 1995-02-06 | 2004-05-10 | 株式会社不二工機 | 排水ポンプ |
EP0713978B1 (en) * | 1994-11-25 | 1999-08-04 | Fujikoki Mfg. Co., Ltd. | Drainage pump |
JP3580329B2 (ja) * | 1995-08-29 | 2004-10-20 | 株式会社不二工機 | 排水ポンプ |
JP3910665B2 (ja) * | 1996-10-11 | 2007-04-25 | 株式会社不二工機 | 排水ポンプ |
JP4267118B2 (ja) * | 1999-01-27 | 2009-05-27 | 株式会社不二工機 | 排水ポンプ |
JP3874561B2 (ja) * | 1999-01-27 | 2007-01-31 | 株式会社不二工機 | 排水ポンプ |
JP3820814B2 (ja) * | 1999-08-24 | 2006-09-13 | 日本精工株式会社 | 動圧軸受及びその製造方法 |
JP2001123977A (ja) * | 1999-10-27 | 2001-05-08 | Saginomiya Seisakusho Inc | ドレン排水ポンプ |
-
2004
- 2004-07-16 JP JP2004209377A patent/JP2006029214A/ja active Pending
-
2005
- 2005-06-15 TW TW094119793A patent/TWI359910B/zh active
- 2005-06-22 EP EP05013455.0A patent/EP1617084B1/en not_active Expired - Fee Related
- 2005-07-15 CN CNB2005100842053A patent/CN100429409C/zh active Active
- 2005-07-15 KR KR1020050063947A patent/KR101185830B1/ko active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002005083A (ja) * | 2000-06-21 | 2002-01-09 | Saginomiya Seisakusho Inc | ドレン排水ポンプ |
JP2003293976A (ja) * | 2002-04-08 | 2003-10-15 | Taisan Kogyo Kk | 排水ポンプ |
Also Published As
Publication number | Publication date |
---|---|
KR101185830B1 (ko) | 2012-10-02 |
KR20060050184A (ko) | 2006-05-19 |
TWI359910B (en) | 2012-03-11 |
CN100429409C (zh) | 2008-10-29 |
CN1757935A (zh) | 2006-04-12 |
JP2006029214A (ja) | 2006-02-02 |
EP1617084A1 (en) | 2006-01-18 |
TW200604438A (en) | 2006-02-01 |
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