CN104947387A - Washing machine and circulating water-saving filter device with self-cleaning function for washing machine - Google Patents
Washing machine and circulating water-saving filter device with self-cleaning function for washing machine Download PDFInfo
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- CN104947387A CN104947387A CN201410263741.9A CN201410263741A CN104947387A CN 104947387 A CN104947387 A CN 104947387A CN 201410263741 A CN201410263741 A CN 201410263741A CN 104947387 A CN104947387 A CN 104947387A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The invention discloses a washing machine and a circulating water-saving filter device with a self-cleaning function for the washing machine. The circulating water-saving filter device comprises a filter container, a filter mechanism and a self-cleaning mechanism. The filter mechanism is rotatably arranged inside the filter container, the self-cleaning mechanism can drive the filter mechanism to rotate by the aid of inlet water flow, and the filter mechanism can be sprayed and cleaned by the self-cleaning mechanism. The washing machine comprises an outer barrel of the washing machine. The outer barrel, a flocculation device, the filter device and the outer barrel are sequentially communicated with one another via pipelines in a circulating manner, the flocculation device comprises a flocculation container and a flocculating agent dispenser, the flocculation container is communicated with the outer barrel, flocculating agents are dispensed into the flocculation container by the flocculating agent dispenser, and water is drained from the outer barrel into the flocculation container and is subjected to flocculation treatment in the flocculation container. The filter device comprises the filter container and the filter mechanism in the filter container. The filter container is communicated with the flocculation container and the outer barrel, and the water in the flocculation container is filtered by the filter mechanism after the water is subjected to flocculation treatment, and then is drained into the outer barrel to be reused. The washing machine and the circulating water-saving filter device have the advantages that the automation degree can be upgraded, the washing machine and the circulating water-saving filter device are simple in structure, and energy can be saved.
Description
Technical field
The present invention relates to washing machine cycles water treatment facilities, specifically adopt the washing machine cycles water saving fixtures of flocculation filtration mode, especially a kind of washing machine cycles water saving filter and washing machine with self-cleaning function.
Background technology
Along with the raising of people's living standard, washing machine is one of main household electrical appliances having become people's daily life now, the laundry processes of washing machine mainly comprises washing, rinsing, dry several stage, at washing stage washing machine inflow and washing agent, clothing is washed, in order to rinse spot and residual washing agent after entering rinse stage, need into more water or perform more rinsing times rinsing is carried out to clothing, the water resource of this at substantial that is bound to, even the roller washing machine of water-saving, also rinsing at least twice is needed in order to rinse clothing, this process at least will consume the running water of more than 30L.Sometimes the washing agent that is less or that throw in of the spot on clothing is less, may twice with regard to rinsed clean, but because user have selected 3 rinsings, also certainly will can cause the waste of water resource, the basic water consumption of general twice washings of automatic washing machine of such as 6Kg is at about 100 liters.How can accomplish water and electric saving while clean clothes, be one of focus of paying close attention to of consumer always.
Not yet there are the matching used Water warfare of washing machine and recycling device so far, even if the so-called washing machine with water-saving function, generally in the position, side of washing machine, water storage tank are installed, water pump is adopted to carry out water filling and draining, generally can a water filling, rinsing 3 times, plays water-saving function.But the water after washing can not be preserved, make the own complex structure of washing machine, huge simultaneously, be unfavorable for transport, recycling etc.Due to the restriction of the aspects such as volume, structure and flexibility, have impact on giving full play to of washing machine original function and the function of water-saving box own.In order to better saving water resource on the basis of existing laundry mode, a lot of producer has dropped into a large amount of research and development.
Existing washing machine is with recirculated water function, and it only plays and filters line bits, and washing is even or add the effect such as ozone, heavy metal ion sterilization.Cannot water consumption be improved, and there is no basic raising to cleaning.
The recycle of laundry water, through consulting Patents document, if application number is " recycling water saving device of washing machine " of 200810072420.5, being inputted by laundry water in a water drum, carrying out purified treatment.This invention is not carried out purification direct for the laundry water of first pass and is run in, and after carrying out purified treatment, uses when wait until laundry next time for the rinsing water of second, third time.
In the above-described techniques, " recirculating water technical " uses after washings purification, and this technology can not recycle first pass laundry water (first wash water), and the water after purification also will be waited until laundry next time and be used, can not use when when time laundry.
Application number be 03256181.4 Chinese patent disclose a kind of water-conservation washing machine, prefiltration device is provided with before the delivery port of its wash bucket, it is also provided with water butt, the bottom of water butt is provided with flocculation basin, the top of flocculation basin is provided with filter, flocculation basin is connected with wash bucket by pipeline, and flocculation basin also has sewage draining exit, and pipeline is provided with pump.
Owing to not having cleaning function in said structure filter, after long-time use, filter can result in blockage, and affects water circulation process.
In view of this special proposition the present invention.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, the washing machine cycles water saving filter providing a kind of structure simply to have self-cleaning function.
Another object of the present invention is to provide the washing machine with this circulating water-saving filter.
For solving the problems of the technologies described above, the present invention adopts the basic conception of technical scheme to be: a kind of washing machine cycles water saving filter with self-cleaning function, comprise filtering container and filter mechanism, described filter mechanism is located at filtering container inside rotationally, and filter also comprises the self-cleaning mechanism utilizing water inlet current driving filter mechanism to rotate also cleaning showers filter mechanism.
Further, described filter mechanism comprises cartridge filtration framework and is located at filter screen on filter frame, filter frame two ends and filtering container pivotally connected, its one end is swivel joint, other end sealing.
Further, described filtering container is provided with washing machine cycles water water inlet, the delivery port of being discharged by the water after filtering and cleaning waste water is discharged outside sewage draining exit, filters out the mouth of a river and is communicated with filter mechanism swivel joint.
Further, the axis that described filter mechanism rotates and horizontal plane have a slanted angle α, 0≤α≤30 °, and the lower one end of filter mechanism is located at by swivel joint; By tilting or horizontal filter mechanism, can not only filter area be increased, accelerating the rate of filtration, and being beneficial to filter gauze cleaning.
Or described filter mechanism is vertically located in filtering container, and bottom is located at by swivel joint.This structure effectively utilizes the speed of current scour filter screen, and filter gauze cleaning is cleaner.
Further, described self-cleaning mechanism comprises shower nozzle, and shower nozzle is installed on filtering container, and water spraying direction acts on filter mechanism surface, drives filter mechanism to rotate.Shower nozzle water spraying direction is the periphery that the oblique filter mechanism in axle center departing from filter mechanism rotates, and close to the direction that cartridge filtration framework is tangent, acts on filter mechanism screen surface, realizes powerful cleaning.
Further, described self-cleaning mechanism also comprises the blade being located at filter mechanism surface, and the water spraying direction of the corresponding shower nozzle of blade is arranged, and to transmit the power that current drive filter mechanism to rotate, and stirs the current washing and filtering container inner wall in filtering container.
Further, described shower nozzle is tubular structure, and one end is closed, and the other end is intake with cleaning and is communicated with, and shower nozzle perisporium is in axial direction provided with at least one water jet.The shape of water jet has circle, ellipse, strip etc., and the length of shower nozzle will ensure that the flow width ejected is enough to cover the axial length range of whole filter screen.
Further, described shower nozzle comprises nozzle and water inlet pipe, nozzle has an equal setting-out chamber and the water jet of outwards spraying water that communicates with equal setting-out chamber, water inlet pipe extends in equal setting-out chamber, the one end extended in equal setting-out chamber is closed, the other end is intake with cleaning and is communicated with, and water inlet pipe perisporium is provided with the delivery port that at least one and equal setting-out chamber communicates.
Further, described equal setting-out chamber is an isosceles triangle shape chamber, and water inlet pipe extends perpendicular to base from equal setting-out chamber drift angle, and water jet is located at base, equal setting-out chamber, and delivery port is symmetrically distributed on the water inlet pipe perisporium in corresponding two waist directions.
Preferably, water jet is located at the both sides of base, equal setting-out chamber water inlet pipe, and delivery port is strip.
Washing machine of the present invention, comprises outer barrel of washing machine, and outer barrel, flocculation plant, filter being circulated to outer barrel more successively by pipeline is communicated with, wherein,
Flocculation plant, comprises the flocculation container be communicated with outer barrel and the flocculant dispenser throwing in flocculant in the container that flocculates, by flocculation treatment in outer barrel draining to flocculation container;
Filter, comprises filtering container and is located at the filter mechanism in filtering container, and filtering container is communicated with outer barrel with flocculation container respectively, is entered in outer barrel by the water after flocculation treatment in flocculation container again and reuse after filter mechanism filters.
The circulating water treatment method of washing machine of the present invention is: washing terminates, draining carries out flocculation treatment by flocculation plant successively, filter carries out filtration treatment, enter outer barrel rinsing again, the above-mentioned water treatment procedure that circulates terminates to rinsing, open flocculation container sewage draining exit and filtering container outfall, outer barrrel water is entered flocculation container to clean, meanwhile, enter clean water filter.
The cardinal principle of automatically cleaning filter of the present invention utilizes current scour the flocculate be sticky deposited on filter screen, fine particle thing to be washed away, final paste net, the blockage problem solved when flocculate filters.Flocculated mixture enters filtering container and discharge clear water after strainer filtering, if after drainage procedure occurs that the slack-off or filter process of current terminates, start cleaning apparatus for self, slant on filter screen through water jet after running water enters shower nozzle, sideband moves filter mechanism rotation limit and washes away filter screen, and filter mechanism rotates and stirs current cleaning and filtering container inner wall simultaneously.
After adopting technique scheme, the present invention compared with prior art has following beneficial effect.
Washing machine of the present invention adopts flocculation filtration circulating water-saving equipment, and only needing once to intake just can complete whole washing process, saving water resource to greatest extent while not affecting detersive efficiency; Filter achieves automatically cleaning, and eliminate the step of manually cleaning filter, improve automaticity, structure is simple, and can energy efficient.
Accompanying drawing explanation
Fig. 1 is washing machine cycles of the present invention water saving filter apparatus configuration schematic diagram;
Fig. 2 is that the A-A of Fig. 1 is to schematic diagram;
Fig. 3 is that the B-B of Fig. 1 is to schematic diagram;
Fig. 4 is another filter assembly structure schematic diagram of the present invention;
Fig. 5 is nozzle structure schematic diagram of the present invention;
Fig. 6 is shower nozzle sectional schematic diagram of the present invention;
Fig. 7 is that the C-C of Fig. 6 is to schematic diagram;
Fig. 8 is washing machine structure schematic diagram of the present invention;
Fig. 9 is filter of the present invention and flocculation plant structural representation.
Figure 10 is washing machine cycles water connection diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
As shown in Figures 1 to 4, washing machine cycles water saving filter 1 of the present invention, comprise filtering container 11 and filter mechanism 12, it is inner that described filter mechanism 12 is located at filtering container 11 rotationally, and filter 1 also comprises utilization water inlet current and drives filter mechanism 12 to rotate and the self-cleaning mechanism of cleaning showers filter mechanism 12.
Filtering container 11 of the present invention is provided with washing machine cycles water water inlet 111, the delivery port 112 of being discharged by the water after filtering and cleaning waste water is discharged outside outfall 113.Filter mechanism 12 comprises cartridge filtration framework 121 and is located at the filter screen (filter screen is not shown) on filter frame, filter frame 121 two ends and filtering container 11 pivotally connected, its one end is swivel joint 122, other end sealing; Delivery port 112 is communicated with filter mechanism swivel joint 122.
Self-cleaning mechanism of the present invention comprises shower nozzle 13, and shower nozzle 13 is installed on filtering container 11, and water spraying direction acts on filter mechanism 12 surface, drives filter mechanism 12 to rotate.The periphery that the oblique filter mechanism in axle center that shower nozzle 13 water spraying direction can be set to depart from filter mechanism 12 rotates, close to the direction that cartridge filtration framework 121 is tangent, acts on filter mechanism screen surface, realizes powerful cleaning.
In filter 1 filtration cycle water process, the path of current is: shower nozzle 13 and outfall 113 are closed, water inlet 111 enters recirculated water in filtering container 11, and the water after strainer filtering is discharged by the swivel joint 122 of filter frame 121 1 end, delivery port 112; The process of cleaning and filtrating equipment is: water inlet 111, delivery port 112 are closed, shower nozzle 13 enters clear water washing and filtering mechanism 12, filter mechanism 12 rotates agitate water cleaning and filtering container 11 inwall, is discharged after the dirt on screen surface and inwall is washed out by outfall 113.
Embodiment one
As shown in Figure 4, filter mechanism 12 described in the present embodiment is vertically located in filtering container 11, and filter mechanism 12 bottom is located at by swivel joint 122, and self-cleaning mechanism is located on filtering container sidewall.This structure effectively utilizes hydraulic pressure and gravity to wash away filter screen, and filter gauze cleaning is cleaner.
Embodiment two
As shown in Figures 2 and 3, the difference of the present embodiment and above-described embodiment one is: the axial L that described filter mechanism 12 rotates and horizontal plane R has a slanted angle α, 0≤α≤30 °, be preferably 1 °≤α≤10 °, the best is 1 °≤α≤3 °, and the lower one end of filter mechanism 12 is located at by swivel joint 122; By tilting or horizontal filter mechanism, can not only filter area be increased, accelerating the rate of filtration, and being beneficial to filter gauze cleaning.
This structure can realize in the following way: 1, filtering container is horizontally disposed with, and filter mechanism is obliquely installed; 2, filtering container and filter mechanism are obliquely installed jointly, are provided with supporting base below filtering container.
Erect set-up mode relative to the filter mechanism in embodiment one, the advantage of the present embodiment filter mechanism is: 1, can increase filter area; 2, water spray uniform force, slow-roll stabilization; 3, flocculation filtration is even, and not easily block, clean range is wide.
Embodiment three
As shown in Figure 4, the shower nozzle 13 described in the present embodiment is tubular structure, and one end is closed, and the other end is intake with cleaning and is communicated with, and shower nozzle 13 perisporium is in axial direction provided with at least one water jet 130.The shape of water jet 130 has circle, ellipse, strip etc., and the length of shower nozzle will ensure that the flow width ejected is enough to cover the axial length range of whole filter screen.
This tubulose shower nozzle 13 can arrange multiple, is distributed on filtering container 11 sidewall, is parallel to filter mechanism 12 and rotates axial direction setting.
Embodiment four
As shown in Figures 5 to 7, shower nozzle 13 described in the present embodiment comprises nozzle 131 and water inlet pipe 132, nozzle 131 has an equal setting-out chamber 1311 and the water jet 1312 of outwards spraying water that communicates with equal setting-out chamber, water inlet pipe 132 extends in equal setting-out chamber 1311, the one end extended in equal setting-out chamber 1311 is closed, the other end is intake with cleaning and is communicated with, and water inlet pipe 132 perisporium is provided with the delivery port 1321 that at least one and equal setting-out chamber 1311 communicates.
Further, described equal setting-out chamber 1311 is an isosceles triangle shape chamber, water inlet pipe 132 extends perpendicular to base from equal setting-out chamber 1311 drift angle, and water jet 1312 is located at base, equal setting-out chamber 1311, and delivery port 1321 is symmetrically distributed on water inlet pipe 132 perisporium in corresponding two waist directions.
Preferably, water jet 1312 is located at the both sides of the corresponding water inlet pipe 132 in base, equal setting-out chamber 1311, and delivery port 1321 is strip.
This shower nozzle 13 is at least two, be parallel to filter mechanism 12 to rotate axial direction and be located at above the side of filter mechanism 12, spraying hydraulic pressure and overboard weight-driven filter frame is utilized to rotate, and clean filter screen, in filter frame rotation process, washed by rubbing with the hands by the water in filtering container, remove screen surface fouling product.
Embodiment five
As shown in Figure 3, the self-cleaning mechanism described in the present embodiment also comprises the blade 14 being located at filter mechanism surface, and the water spraying direction of the corresponding shower nozzle 13 of blade 14 is arranged, to transmit the power that current drive filter mechanism to rotate.
Further, described blade 14 is multiple, along filter frame 121 circumference and axial distribution, corresponding with shower nozzle 13 water spraying direction.
Embodiment six
As shown in Fig. 8 to Figure 10, washing machine of the present invention is including, but not limited to rotary drum washing machine and roller washing machine, and washing machine comprises outer barrel of washing machine 2, outer barrel 2, flocculation plant 4, filter 1 to be circulated connection to outer barrel 2 more successively by pipeline 3.
Flocculation plant 4 comprises the flocculation container 41 be communicated with outer barrel and the flocculant dispenser 5 throwing in flocculant in the container 41 that flocculates, by flocculation treatment in outer barrel 2 draining to flocculation container 41;
The filter mechanism 12 that filter 1 comprises filtering container 11 and is located in filtering container 11, filtering container 11 is communicated with outer barrel 2 with flocculation container 41 respectively, is filtered again to enter in outer barrel 2 again by the water after flocculation treatment in flocculation container 41 reuse through filter mechanism 12.
The circulating water treatment method of washing machine of the present invention is, washing terminates, draining is to recycling water treatment device, carry out flocculation treatment by flocculation plant successively, filter carries out filtration treatment, then enter outer barrel rinsing, the above-mentioned water treatment procedure that circulates terminates to rinsing, open flocculation container sewage draining exit and filtering container outfall, outer barrrel water is entered flocculation plant clean, meanwhile, enter clean water filter.
Further, washing machine of the present invention also comprises detergent embarking device 6, and detergent embarking device 6 is prior art, is preferably the structure utilizing water inlet negative pressure extracting washing agent to throw in; Flocculant dispenser 5 of the present invention is also for automatically to throw in structure, and according to the turbidity of washing the water yield and washing/washings, during each flocculation treatment, automatic switching is rivals in a contest and is answered the flocculant of ratio; If flocculant is sheet, the automatic input structure of existing detergent tablet can be adopted, if flocculant is particle or powdery, then adopt the quantitative input structure of prior art.
Embodiment in above-described embodiment can combine further or replace; and embodiment is only be described the preferred embodiments of the present invention; not the spirit and scope of the present invention are limited; under the prerequisite not departing from design philosophy of the present invention; the various changes and modifications that in this area, professional and technical personnel makes technical scheme of the present invention, all belong to protection scope of the present invention.
Claims (10)
1. one kind has the washing machine cycles water saving filter of self-cleaning function, comprise filtering container and filter mechanism, it is characterized in that: described filter mechanism is located at filtering container inside rotationally, filter also comprises the self-cleaning mechanism utilizing water inlet current driving filter mechanism to rotate also cleaning showers filter mechanism.
2. a kind of washing machine cycles water saving filter with self-cleaning function according to claim 1, it is characterized in that: described filter mechanism comprises cartridge filtration framework and is located at the filter screen on filter frame, filter frame two ends and filtering container pivotally connected, its one end is swivel joint, other end sealing.
3. a kind of washing machine cycles water saving filter with self-cleaning function according to claim 2, it is characterized in that: described filtering container is provided with washing machine cycles water water inlet, the delivery port of being discharged by the water after filtering and cleaning waste water is discharged outside sewage draining exit, filters out the mouth of a river and is communicated with filter mechanism swivel joint.
4. a kind of washing machine cycles water saving filter with self-cleaning function according to claim 2, it is characterized in that: the axis that described filter mechanism rotates and horizontal plane have a slanted angle α, 0≤α≤30 °, the lower one end of filter mechanism is located at by swivel joint; Or described filter mechanism is vertically located in filtering container, and bottom is located at by swivel joint.
5. according to the arbitrary described a kind of washing machine cycles water saving filter with self-cleaning function of claim 1-4, it is characterized in that: described self-cleaning mechanism comprises shower nozzle, shower nozzle is installed on filtering container, and water spraying direction acts on filter mechanism surface, drives filter mechanism to rotate.
6. a kind of washing machine cycles water saving filter with self-cleaning function according to claim 5, it is characterized in that: described shower nozzle is tubular structure, one end is closed, and the other end is intake with cleaning and is communicated with, and shower nozzle perisporium is in axial direction provided with at least one group of water jet.
7. a kind of washing machine cycles water saving filter with self-cleaning function according to claim 5, it is characterized in that: described shower nozzle comprises nozzle and water inlet pipe, nozzle has an equal setting-out chamber and the water jet of outwards spraying water that communicates with equal setting-out chamber, water inlet pipe extends in equal setting-out chamber, the one end extended in equal setting-out chamber is closed, the other end is intake with cleaning and is communicated with, and water inlet pipe perisporium is provided with the delivery port that at least one and equal setting-out chamber communicates.
8. a kind of washing machine cycles water saving filter with self-cleaning function according to claim 7, it is characterized in that: described equal setting-out chamber is an isosceles triangle shape chamber, water inlet pipe extends perpendicular to base from equal setting-out chamber drift angle, water jet is located at base, and delivery port is symmetrically distributed on the water inlet pipe perisporium in corresponding two waist directions.
9. a kind of washing machine cycles water saving filter with self-cleaning function according to claim 5, it is characterized in that: described self-cleaning mechanism also comprises the blade being located at filter mechanism surface, the water spraying direction of the corresponding shower nozzle of blade is arranged, to transmit the power that current drive filter mechanism to rotate.
10. have as arbitrary in claim 1-9 as described in the washing machine of circulating water-saving filter, comprise outer barrel of washing machine, successively outer barrel, flocculation plant, filter be communicated with to outer barrel circulation by pipeline again, it is characterized in that:
Flocculation plant, comprises the flocculation container be communicated with outer barrel and the flocculant dispenser throwing in flocculant in the container that flocculates, by flocculation treatment in outer barrel draining to flocculation container;
Filter, comprises filtering container and is located at the filter mechanism in filtering container, and filtering container is communicated with outer barrel with flocculation container respectively, is entered in outer barrel by the water after flocculation treatment in flocculation container again and reuse after filter mechanism filters.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263741.9A CN104947387B (en) | 2014-03-27 | 2014-06-13 | A kind of water-saving filter device of washing machine cycles with self-cleaning function and washing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2014101196584 | 2014-03-27 | ||
| CN201410119658 | 2014-03-27 | ||
| CN201410263741.9A CN104947387B (en) | 2014-03-27 | 2014-06-13 | A kind of water-saving filter device of washing machine cycles with self-cleaning function and washing machine |
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| CN104947387A true CN104947387A (en) | 2015-09-30 |
| CN104947387B CN104947387B (en) | 2019-06-28 |
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| CN106884286A (en) * | 2015-12-16 | 2017-06-23 | 青岛海尔洗衣机有限公司 | A kind of flocculation filtration device and the washing machine equipped with above-mentioned flocculation filtration device |
| CN107142681A (en) * | 2017-06-20 | 2017-09-08 | 青岛海尔滚筒洗衣机有限公司 | Cleaning method, drainage arrangement and the washing machine of drainer for washer |
| CN108661804A (en) * | 2018-04-28 | 2018-10-16 | 江苏华强新能源科技有限公司 | A kind of energy-saving high-efficient gas turbine gas handling system |
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| WO2019192522A1 (en) * | 2018-04-03 | 2019-10-10 | 青岛海尔滚筒洗衣机有限公司 | Clothing treatment device |
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| CN109234998A (en) * | 2018-09-11 | 2019-01-18 | 珠海格力电器股份有限公司 | Air duct filtering device and clothes washing and drying machine |
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Effective date of registration: 20160713 Address after: 266101 Haier Industrial Park, No. 1, Haier Road, hi tech park, Laoshan District, Shandong, China Applicant after: Qingdao Haier Washing Machine Co., Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Applicant before: haier group corporation Applicant before: Qingdao Haier Washing Machine Co., Ltd. |
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