CN100394036C - Pump for washing machine - Google Patents
Pump for washing machine Download PDFInfo
- Publication number
- CN100394036C CN100394036C CNB2005100681615A CN200510068161A CN100394036C CN 100394036 C CN100394036 C CN 100394036C CN B2005100681615 A CNB2005100681615 A CN B2005100681615A CN 200510068161 A CN200510068161 A CN 200510068161A CN 100394036 C CN100394036 C CN 100394036C
- Authority
- CN
- China
- Prior art keywords
- pump
- impeller
- blade
- washing machine
- ejiction opening
- 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
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Abstract
To provide a pump for a washing machine which is not easily blocked with cloth debris. In a circulating pump for a washing machine including a pump casing and a rotation runner rotationally installed in the pump casing, the rotation runner includes a runner base plate and a plurality of runner blades erectly provided on the runner base plate and extending to a radial direction from a runner rotation axis, the pump casing includes a suction opening provided on a position facing a center of the runner blade and a delivery provided on a circumference part facing an outer circumference side of the runner blade on an opposite side of the runner base plate, a cylinder is provided erectly toward the suction opening from the runner base plate on the center of the runner blade, and an upper end of a cylinder projecting toward the suction opening is made to be cubic round than an upper end of the runner blade.
Description
Technical field
The present invention relates to scouring water in washing tank and water jacket drink up on the washing that is sprinkled upon in the washing tank, the improvement of the pump for washing machine of scouring water after going out to use side by side storing.
Background technique
Pump for washing machine has for example structure shown in the Japanese documentation 1 (spy opens flat 8-23356 communique).
Pump for washing machine shown in the patent documentation 1 has pump casing, is built in the rotation rotary blade freely of pump casing.
The pump for washing machine of illustrated the sort of mode has that cloth bits get lodged between pump casing and the rotary blade slit, the cloth bits get lodged in ejiction opening and the circulation of the water that might cause doing washing is bad maybe can not circulate in the above-mentioned patent documentation 1, thereby need take in the cloth bits.
Summary of the invention
The present invention proposes in view of above problem, and its objective is provides the pump for washing machine that is difficult to by the obstruction of cloth bits.
The invention is characterized in, has pump casing, be built in the use in washing machine recycle pump of the rotary blade that rotates freely of pump casing, circulation impeller has the impeller pedestal, be arranged to hold up from the impeller pedestal, a plurality of impeller blades from the extension of impeller rotating shaft mind-set radiation direction, pump casing has in the opposition side of impeller pedestal and is located in the face of the suction port in the place at impeller center and is located at the ejiction opening of periphery of the outer circumferential side of impeller, be provided with the cylinder of holding up to suction port from the impeller pedestal at the center of impeller blade, more be spherical towards the upper end of the outstanding cylinder of suction port than the upper end of impeller blade.
Adopt the present invention, the pump for washing machine that is difficult to by the obstruction of cloth bits can be provided.
Description of drawings
Fig. 1 is the sectional arrangement drawing of washing machine among the embodiment of embodiments of the present invention.
Fig. 2 is the front view of use in washing machine recycle pump motor among the embodiment of embodiments of the present invention.
Fig. 3 is the figure that shows use in washing machine recycle pump motor and ejection water route among the embodiment of embodiments of the present invention.
Fig. 4 is the figure that shows the relation of rotary blade and pump casing among the embodiment of embodiments of the present invention.
Fig. 5 is the front view of rotary blade among the embodiment of embodiments of the present invention.
Fig. 6 is the front view of rotary blade among the embodiment of embodiments of the present invention.
Fig. 7 is the sectional drawing of pump casing among the embodiment of embodiments of the present invention.
Fig. 8 is the sectional drawing of pump casing among other embodiments of embodiments of the present invention.
Fig. 9 is the sectional drawing of pump casing among other embodiments of embodiments of the present invention.
Figure 10 is the sectional drawing of pump casing among other embodiments of embodiments of the present invention.
Figure 11 is the front view of use in washing machine recycle pump motor among other embodiments of embodiments of the present invention.
Figure 12 is the figure that shows the characteristic of the spray volume of pump among the embodiment of embodiments of the present invention.
Among the figure: 60-pump casing, 61-rotary blade, 62-impeller base, 63-impeller blade, 64-suction port, 65-ejiction opening, 90-cylinder.
Embodiment
With reference to Fig. 1～Figure 12 the embodiment of embodiments of the present invention is described.
In these mode of executions, be that embodiment describes with the use in washing machine recycle pump.
At first, with reference to Fig. 1 probably describing successively from washing machine.
Folding and unfolding has the washing tank 2 double as drench pits of the washing 1 that will wash.Possesses the stirring body 3 that freely rotates when washing 1 is cleaned in stirring at the interior end of washing tank 2.The water jacket 4 of built-in washing tank 2 has the function that stores scouring water at washing tank 2.Outer bottom at water jacket 4 possesses motor 5.Motor 5 carries out the stirring action of stirring body 3 and the dehydration rotation of washing tank 2.
Outside being located at washing machine, possesses water supply installation 9 in the top cover 8 of framework 6 upsides.In water supply installation 9, supply with tap water by water channel flexible pipe 10, water supply electromagnetic valve 11.The sink drain 20 of water supply installation 9 is in the face of the upside of washing tank 2.Tap water injects in the washing tank 2 from sink drain 20.
In top cover 8, possesses level sensor 24.The pipe 25 of level sensor 24 is communicated with the downside of water jacket 4 is neighbouring.Utilize this level sensor 24 to detect the water level 26 of washing tank 2.Downside at water jacket 4 possesses draining road 27.Scouring water after the drain valve 28 of opening draining road 27 will use are discharged.
Motor-drive pump unit 40 is provided in the space in the outer framework 6 of water jacket 4 below washing machines.This motor-drive pump unit 40 has Fig. 2 or motor 41 and use in washing machine recycle pump 42 shown in Figure 3.
The suction water route 43 of use in washing machine recycle pump 42 is communicated with washing tank 2 by the part on draining road 27.The upside that washing tank 2 is crossed in the ejection water route 44 of use in washing machine recycle pump 27 extends.Front end in this ejection water route 44 is connected with above-mentioned shower mouth 23.The cloth bits can also be set in the centre in ejection water route 44 catch mechanism.This ejection water route 44 is located in the narrow space in the outer framework 6 of washing machine.
Motor 41 is a shadedpole motor, is provided with cooling fan 45 in a side opposite with use in washing machine recycle pump 42.The bolt 46 that use in washing machine recycle pump 42 usefulness are long tighten and be fixed on the tailstock 47 of being located at cooling fan 45 opposite sides on.
Use in washing machine recycle pump 42 has pump casing 60, is built in the rotation rotary blade 61 freely in this pump casing 60.This use in washing machine recycle pump 42 is a centrifugal pump, sucks the rotating center side of rotary blade 61, to the peripheral direction ejection of rotary blade 61.
With reference to Fig. 3 the suction water route 44 of use in washing machine circulation pump side is described.
The internal diameter φ D1 of ejiction opening pipe 70 is about 18mm, and the internal diameter φ D2 of straight pipe portion 22 is about 30mm.The radius of curvature R 2 in bight, the 1st curved tube portion 81 outside is about 30mm～40mm, and the radius of curvature R 1 in inboard bight is little more a lot of than the radius of curvature R 2 in outside bight.
In the directions that the 1st curved tube portion 81 changes 90 degree, flow through straight pipe portion 82 from the scouring water of ejiction opening pipe 70 ejection of use in washing machine recycle pump 42.When the 1st curved tube portion 81 changed 90 degree directions, the radius of curvature R 2 in bight, the outside was little, and flow resistance increases, and flow velocity weakens.Therefore, be mixed in cloth bits in the scouring water be trapped in ejiction opening pipe 70 near, do not flow to straight pipe portion 82 with scouring water.But, be about 30mm～40mm by the radius of curvature R 2 that makes bight, the outside, the pipe impedance that flows does not increase, and flow velocity does not weaken.Therefore, cloth bits can not be trapped in ejiction opening pipe 70 near, can successfully flow.
The radius of curvature R 2 in bight, the outside wishes it is about 30mm～40mm, even but be about the internal diameter φ D7 (18mm) of ejiction opening pipe 70, the cloth bits can not be detained yet, and flow and can carry out smoothly.
As mentioned above, the ejection water route 44 of use in washing machine circulation pump side has two curved tube portions (the 81, the 2nd curved tube portion 83 of the 1st curved tube portion) in the both sides of straight pipe portion 82.In addition, the interval H4 of motor 41 and straight pipe portion 82 is about 70mm.The structure in the ejection water route 44 by adopting this bending, can be outside washing machine the small space configuration ejection water route 44 of framework 6 inboards.In addition, although be the ejection water route 44 of this bending, the radius of curvature R 2 in the bight, the outside by making the 1st curved tube portion 81 just can prevent the delay of cloth bits greater than the internal diameter φ D7 of ejiction opening pipe 70.
With reference to Fig. 4～Fig. 6 rotary blade is described.
The cylinder 90 that rotary blade 61 has impeller blade 63, holds up towards suction port 64 from impeller base 62 at the center of 63a.This cylinder 90 is high to become more outstanding to suction port 64 than the upper end of impeller blade 63, opens and the upper end of cylinder 90 is spherical.The external diameter φ D8 of cylinder 90 is about 12mm.The radius of a ball R3 of cylinder 90 upper ends is about 6mm.The pipe spreader 91 that is located at impeller base 62 back sides wishes that its external diameter and cylinder 90 are roughly the same.Make pipe spreader 91 identical with the external diameter of cylinder 90, making to have the trace of plastics in the table of impeller base 62.
The internal diameter φ D3 of the periphery of pump casing 60 is about 55mm.The diameter phi D4 of suction port 64 is about 24mm.The internal diameter φ D7 of the ejiction opening 65 of pump casing 60 is about 18mm.The gap H1 of cylinder 90 upper ends of the inside portion of the suction port 64 of pump casing 60 and rotary blade 61 is about 10mm.
Use in washing machine recycle pump 42 conflicts with cylinder 90 and disperses when scouring water are in suction port 64 suction pump shells 60, walks to peripheral direction.This is walked about to peripheral direction, owing at the center of rotary blade 61 cylinder 90 being set and successfully carrying out, so the cloth bits that are mixed in the scouring water can not rest on pump casing 60, and from ejiction opening 65 ejections, and the obstruction that is difficult to produce the cloth bits.
In addition, the upper end of cylinder 90 is because higher slightly than the upper end of impeller blade 63, and is spherical, so the mobile of the scouring water that disperse that conflict with cylinder 90 to peripheral direction more successfully carries out.
Have again, the upper end side of impeller 63 is owing to being that the height step-down of walking to periphery from the center of impeller blade from impeller base 62 is tilted, so be the angle bigger from suction port 64 to flowing of ejiction opening 65 than the right angle, good to the discharging jet of ejiction opening 65, be difficult to produce the obstruction that cloth is considered to be worth doing.
Have again, the outer circumferential side of impeller 63 near along with leave impeller base 62 upwards the rotary blade 61 of walking the center and tilt.And at the outer circumferential side of impeller blade 63, only the gap between the periphery of incline section and pump casing 60 increases, and is difficult to produce the obstruction of cloth bits, just is difficult to produce the rotation locked cock of use in washing machine recycle pump 42.
In addition, owing to a plurality of impeller blades 63,63a are that high impeller blade of combined altitudes and highly low impeller blade constitute, so, at the central part of impeller blade step difference can be arranged, be difficult to produce the cloth bits stride across central part intersection point draw extension, the cloth bits are easy to move to peripheral direction.Therefore, compare with the object of the impeller blade with equal height, the cloth bits are difficult for hanging over the center of rotary blade 61.Being difficult to produce the cloth bits stops up.
With reference to Fig. 7 pump casing is described.
In addition, pump casing 42 around the inner peripheral surface of portion have bight 93.This bight 93 is located at the peristoma portion of ejiction opening 65, in the place of sense of rotation one side of rotary blade 61.Above-mentioned ridge 92 is positioned at from this bight 93 near rotation the place ahead.
Be mixed in cloth bits in the scouring water when the ejiction opening 65 of pump casing 60 is discharged with scouring water, hang on the bight 93.These cloth bits tangle owing to striding across ridge 92, thus different with the occasion that does not have ridge 92, become the state that tortuosity greatly gently tangles.Therefore, owing to utilize pump casing 60 in flowing water flow or from the ejection current of ejiction opening 65 ejections, these cloth bits flow directly to the outside, so be difficult to produce the obstruction of cloth bits.
That shown in Figure 8 is other embodiments of pump casing.
Be with embodiment's shown in Figure 7 difference, remove ridge 92 and bight 93 and circular arc part is set.That is,, circular arc part 94 is set in the place of the sense of rotation side of rotary blade 61 in the peristoma portion of ejiction opening 65.The radius R 4 of this circular arc part 94 is about 5mm～10mm.
Be mixed in cloth bits in the scouring water when the ejiction opening 65 from pump casing 60 sprays with scouring water,, can not produce tangling of cloth bits owing to successfully flow along circular arc part 94.Also have,, wish to be provided with bight 93, about making radius R 4, just can not damage pump performance, can eliminate the cloth bits and stop up for 5mm～10mm at the face of pump performance.
That shown in Figure 9 is other embodiments of pump casing.
This embodiment is characterised in that, the periphery of pump casing 42 towards radially around the outer circumferential side of the circular envelope of portion be provided with the bellying that bloats, the spraying pipe 70 that extends to the tangent direction of circular envelope from this bellying 95 is set.In this embodiment, become ejiction opening 65 in the face of mouth between the bellying 95 of periphery.From the scouring water of this ejiction opening 65 ejections temporarily from towards the inboard of bellying 95 flowing to spraying pipe 70.Utilization is flowed towards the inboard of this bellying 95, and the cloth bits that hang on the bight 93 reduce, and are difficult to produce the obstruction of cloth bits.
Explanation so far is the structure of rotary blade or pump casing to be worked hard remove cloth bits and stop up and narrate, and the intermittent running by the impeller that stops the rotation off and on prevents that the cloth bits from stopping up.
The rotation of impeller in case stop the rotation, the scouring water in the ejection water route suck the water route adverse current by edge in the pump casing.Taking advantage of this adverse current, the cloth bits that are trapped in pump casing move on to and suck the water route.By the rotation of ensuing rotary blade, the cloth bits are being taken advantage of flowing of scouring water, owing to be ejected into ejection water route side, have prevented the obstruction of cloth bits.
That shown in Figure 10 is other embodiment of pump casing.
This embodiment is characterised in that, is provided with ejiction opening 65 at the periphery of pump casing 42 circles, and is provided with the ejiction opening pipe 70 that links to each other with this ejiction opening 65, and the bearing of trend that makes this aspis pipe 70 is provided with towards the radial line of periphery from the center of rotary blade 61.
That is, extend with the direction of the tangent line quadrature of the circumferential part of circle on ejiction opening pipe 70 edges.Mobile becoming towards the scouring water of ejiction opening pipe 70 in the pump casing 42 bends to flowing of right angle.It is all identical with the positive and negative rotation of rotary blade 61 to flow.Owing to be all identical pump performance of positive and negative rotation, so towards positive and negative revolving pump.
The gap of the periphery of the periphery of rotary blade 61 and pump casing 42 is arranged near near the clearance G the ejiction opening pipe 70 4 to about 4mm～8mm, away from the clearance G 3 in place be about 2mm～4mm.Become big by this in gap, can improve pump performance near the place of ejiction opening pipe 70.
The embodiment of other of shown in Figure 11 is use in washing machine recycle pump.Describe based on this embodiment.
This embodiment is characterised in that, makes about the misalignment H2 (5mm) of the rotating center of rotary blade 61 and suction port 64.
By the center that the rotating center that makes rotary blade 61 departs from suction port 64, the separating property that enters the air in the pump casing 42 with scouring water simultaneously becomes better.That is, do not concentrate, be in the state that departs from eddy current at the rotating center of rotary blade 61 from the mixing water of suction port 64 leaked-in airs.By this eddy current, it is easy that the separation of airborne water becomes.Because the separation of empty G﹠W becomes easily, thereby pump performance is improved.In addition, owing to the composition of air that is mixed in the water that rotates because of rotary blade 61 reduces, so noise reduces.
In addition, the cloth bits are difficult for tangling the central part at rotary blade 61.Cloth is considered the center of departing from rotary blade 61 to be worth doing, is ejected into the outer circumferential side of rotary blade 61, is easy to discharge from ejiction opening 65.
Make the rotating center of rotary blade 61 and the misalignment of suction port 64, can make the deterioration of efficiency of pump originally, but as long as at H2 (about 5mm) with interior, can not had the flow of trouble as the use in washing machine recycle pump.
Shown in Figure 12 is the pump performance of the use in washing machine rotary pump of embodiments of the invention.This pump performance is described.
This pump performance shows that ejiction opening pipe 70 is with respect to the relation of the external diameter φ D8 of the described cylinder 90 of Fig. 4 and the diameter phi D4 of suction port 64 spray volume than (φ D8/ φ D4).Lift is that height H 3 shown in Figure 1 is about 500mm.
External diameter by allowing to suppress the cylinder 90 that the cloth bits twine just can provide the cloth bits to twine minimizing, the also good use in washing machine recycle pump of pump performance below half of suction port 64 bores.
Claims (9)
1. a pump for washing machine has pump casing, is built in the rotation rotary blade freely in the described pump casing,
Described rotary blade has the impeller base, erects a plurality of impeller blades that are provided with and extend from impeller rotating shaft mind-set radiation direction at described impeller base,
Described pump casing is in a side opposite with described impeller base, has the suction port that is provided with in the place in the face of the center of described impeller blade, at the ejiction opening that the periphery in the face of the outer circumferential side of described impeller blade is provided with, it is characterized in that,
Center at described impeller blade is provided with the cylinder of holding up to described suction port from described impeller base,
Upper end than described impeller blade more is spherical to the upper end of the outstanding described cylinder of described suction port.
2. pump for washing machine according to claim 1 is characterized in that,
Described a plurality of impeller blade has the high impeller blade and the highly low blade of height of the described impeller base of distance.
3. pump for washing machine according to claim 2 is characterized in that,
Mutual described high impeller blade of configuration and described low impeller blade.
4. pump for washing machine according to claim 1 is characterized in that,
The upper end side of described impeller blade have from the center of rotary blade on the direction of periphery, from having a down dip of the height step-down of described relatively impeller base.
5. pump for washing machine according to claim 1 is characterized in that, the outer circumferential side of described impeller blade have from described impeller base on the direction of described suction port, become near inclination from the centre distance of described rotary blade.
6. pump for washing machine according to claim 1 is characterized in that,
At the inner side surface of described periphery, near the edge part of the ejiction opening in the sense of rotation the place ahead that becomes described rotary blade, be provided with ridge.
7. pump for washing machine according to claim 1 is characterized in that,
Be positioned at described rotary blade sense of rotation front side and in the place that the inner peripheral surface of described periphery and described ejiction opening intersect, be provided with circular arc part.
8. pump for washing machine according to claim 1 is characterized in that, also comprises
The ejiction opening pipe that is connected with described ejiction opening,
Make the bearing of trend of described ejiction opening pipe be arranged on center from described impeller blade on the radial line of periphery.
9. pump for washing machine according to claim 1 is characterized in that,
The center that makes the rotating center of described rotary blade depart from described suction port.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004174897A JP4126290B2 (en) | 2004-06-14 | 2004-06-14 | Washing machine pump |
| JP2004174897 | 2004-06-14 |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101680318A Division CN101153453B (en) | 2004-06-14 | 2005-04-27 | Washing machine |
| CN2007101680322A Division CN101153601B (en) | 2004-06-14 | 2005-04-27 | Washing machine |
| CNA2007101680337A Division CN101153602A (en) | 2004-06-14 | 2005-04-27 | Pump for washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715679A CN1715679A (en) | 2006-01-04 |
| CN100394036C true CN100394036C (en) | 2008-06-11 |
Family
ID=35585894
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101680322A Expired - Fee Related CN101153601B (en) | 2004-06-14 | 2005-04-27 | Washing machine |
| CN2007101680318A Expired - Fee Related CN101153453B (en) | 2004-06-14 | 2005-04-27 | Washing machine |
| CNA2007101680337A Pending CN101153602A (en) | 2004-06-14 | 2005-04-27 | Pump for washing machine |
| CNB2005100681615A Expired - Fee Related CN100394036C (en) | 2004-06-14 | 2005-04-27 | Pump for washing machine |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101680322A Expired - Fee Related CN101153601B (en) | 2004-06-14 | 2005-04-27 | Washing machine |
| CN2007101680318A Expired - Fee Related CN101153453B (en) | 2004-06-14 | 2005-04-27 | Washing machine |
| CNA2007101680337A Pending CN101153602A (en) | 2004-06-14 | 2005-04-27 | Pump for washing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4126290B2 (en) |
| CN (4) | CN101153601B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4919389B2 (en) * | 2006-03-31 | 2012-04-18 | 新明和工業株式会社 | Submersible pump device |
| JP2009057894A (en) * | 2007-08-31 | 2009-03-19 | Nidec Sankyo Corp | Pumping device and washing machine |
| CN101824794B (en) * | 2010-04-26 | 2011-09-21 | 河南高远公路养护设备股份有限公司 | Exhaust fan of dirt catcher used for shot blasting trimmer of road and bridge surfaces |
| JP6178187B2 (en) * | 2013-09-25 | 2017-08-09 | 日立アプライアンス株式会社 | Drum washing machine |
| TWI626351B (en) * | 2015-08-19 | 2018-06-11 | Hitachi Appliances Inc | Laundry dryer |
| KR102638188B1 (en) | 2019-02-01 | 2024-02-16 | 엘지전자 주식회사 | Washing machine with a conduit for supplying water to nozzles at gasket and manufacturing method of the conduit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB642631A (en) * | 1948-06-18 | 1950-09-06 | Thaddens Patrick O Neill | Improvements in household washing machines |
| US3570272A (en) * | 1968-10-10 | 1971-03-16 | Blackstone Corp | Water saver and suds lock elimination system for washing machines |
| JPH04144529A (en) * | 1990-10-05 | 1992-05-19 | Matsushita Electric Ind Co Ltd | Tableware washing machine |
| JPH04250198A (en) * | 1991-01-28 | 1992-09-07 | Nippon Kentetsu Co Ltd | Operating method of washing machine |
| CN1172182A (en) * | 1996-07-15 | 1998-02-04 | 松下电器产业株式会社 | Pump device for washing machine |
| CN2300670Y (en) * | 1997-09-07 | 1998-12-16 | 乐清市虹桥无线电十厂 | Circular water discharging pump for washing machine |
| CN1464124A (en) * | 2002-06-07 | 2003-12-31 | 乐金电子(天津)电器有限公司 | Washing machine |
| CN1536158A (en) * | 2003-04-11 | 2004-10-13 | 乐金电子(天津)电器有限公司 | Foreign matter filtering device of water-discharging pump for washing machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19546967A1 (en) * | 1995-12-15 | 1997-06-19 | Bosch Siemens Hausgeraete | Dishwasher or washing machine for simple assembly or disassembly |
| CN1178269A (en) * | 1996-09-30 | 1998-04-08 | 大宇电子株式会社 | Washing machine having centrifugal pump |
| DE19964292B4 (en) * | 1998-03-05 | 2004-03-18 | Samsung Electronics Co., Ltd., Suwon | A washer has a centrifugal water filter through which the wash liquor continuously cycles |
| CN2444975Y (en) * | 2000-03-31 | 2001-08-29 | 王振海 | Centrifugal washing machine |
| CN100383311C (en) * | 2002-07-05 | 2008-04-23 | 乐金电子(天津)电器有限公司 | Washing machine |
| JP2004057821A (en) * | 2002-07-30 | 2004-02-26 | Lg Electron Inc | Washing machine |
-
2004
- 2004-06-14 JP JP2004174897A patent/JP4126290B2/en not_active Expired - Fee Related
-
2005
- 2005-04-27 CN CN2007101680322A patent/CN101153601B/en not_active Expired - Fee Related
- 2005-04-27 CN CN2007101680318A patent/CN101153453B/en not_active Expired - Fee Related
- 2005-04-27 CN CNA2007101680337A patent/CN101153602A/en active Pending
- 2005-04-27 CN CNB2005100681615A patent/CN100394036C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB642631A (en) * | 1948-06-18 | 1950-09-06 | Thaddens Patrick O Neill | Improvements in household washing machines |
| US3570272A (en) * | 1968-10-10 | 1971-03-16 | Blackstone Corp | Water saver and suds lock elimination system for washing machines |
| JPH04144529A (en) * | 1990-10-05 | 1992-05-19 | Matsushita Electric Ind Co Ltd | Tableware washing machine |
| JPH04250198A (en) * | 1991-01-28 | 1992-09-07 | Nippon Kentetsu Co Ltd | Operating method of washing machine |
| CN1172182A (en) * | 1996-07-15 | 1998-02-04 | 松下电器产业株式会社 | Pump device for washing machine |
| CN2300670Y (en) * | 1997-09-07 | 1998-12-16 | 乐清市虹桥无线电十厂 | Circular water discharging pump for washing machine |
| CN1464124A (en) * | 2002-06-07 | 2003-12-31 | 乐金电子(天津)电器有限公司 | Washing machine |
| CN1536158A (en) * | 2003-04-11 | 2004-10-13 | 乐金电子(天津)电器有限公司 | Foreign matter filtering device of water-discharging pump for washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101153601B (en) | 2010-09-29 |
| JP4126290B2 (en) | 2008-07-30 |
| CN101153601A (en) | 2008-04-02 |
| CN101153453A (en) | 2008-04-02 |
| CN101153453B (en) | 2012-07-18 |
| CN101153602A (en) | 2008-04-02 |
| CN1715679A (en) | 2006-01-04 |
| JP2005351225A (en) | 2005-12-22 |
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