CN103850096A - Detergent placing device integrated with softened water system and washing machine with detergent placing device - Google Patents
Detergent placing device integrated with softened water system and washing machine with detergent placing device Download PDFInfo
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- CN103850096A CN103850096A CN201210499551.8A CN201210499551A CN103850096A CN 103850096 A CN103850096 A CN 103850096A CN 201210499551 A CN201210499551 A CN 201210499551A CN 103850096 A CN103850096 A CN 103850096A
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- water
- softening
- regeneration
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/007—Arrangements of water softeners
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/02—Devices for adding soap or other washing agents
- D06F39/022—Devices for adding soap or other washing agents in a liquid state
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention discloses a detergent placing device integrated with a softened water system and a washing machine with the detergent placing device. The detergent placing device comprises a box body and a placing drawer arranged in the box body in a push-pull mode and is further integrated with the softened water system, the softened water system comprises a water softener and a softening regeneration device, the water softener is integrally installed on the box body, the softening regeneration device is arranged on the placing drawer, and the box body is integrated with a regeneration water channel communicated with the water softener and the softening regeneration device. A detergent placing chamber is arranged in the placing drawer, the box body is integrated with a detergent inlet water channel communicated with the detergent placing chamber, and the water softener is communicated with a main water inlet valve and the detergent inlet water channel. The placing drawer is provided with a softening regeneration cavity, the softening regeneration device is arranged in the softening regeneration cavity, the bottom of the softening regeneration device is provided with a filtering grille, salt is placed in the softening regeneration device, and a check valve is arranged between the softening regeneration cavity and the regeneration water channel. The detergent placing device has the advantages of being simple in structure, small in size and low in cost.
Description
Technical field
The present invention relates to washing machine field, the specifically detergent throwing device of washing machine, especially a kind of washing machine that is integrated with the detergent throwing device of water softening system and there is this device.
Background technology
The washing machine of prior art normally utilizes water to coordinate washing agent to wash clothing, while containing a large amount of ore deposits calcium, magnesium quasi-mineral ion in water, hardness is higher, be called as hard water, be in the suds while using hard water, these mineral ions can react with the surfactant in washing agent, reduce the dirt-removing power of washing agent.When in laundry water, contain as divalent calcium ion, the magnesium ion etc. of water hardening composition CATION time, these calcium ions, magnesium ion reacts the metallicity soap that generates non-dissolving with surfactant in washing agent, reduced and be conducive to the surfactant quantity of laundry and reduced decontamination ability.It is, slovenly that the clothes coming out with hard water looks black dull, feels and feel coarse, stiff.Divalent calcium ion, magnesium ion and dust have been combined into insoluble salt, make the more difficult removal of spot.And dirt on clothing is introduced how stealthy mineral matter in laundry water, make water quality harder.With the hard water fiber that also can spoil a dress of washing clothes, service life of clothing is shortened and reach 40%; In the time that hard water is heated, can produce a large amount of incrustation scales, reduce efficiency and easily make heater block produce fault.So in the time that hard water is used in washing machine cleaning clothes, can makes the scourability of washing machine product and efficiency reduce, and affect product reliability.
In order to address the above problem, the multiple method and apparatus that is applied in the demineralized water on washing machine has now been proposed, wherein can to use be for a long time the softening plant for utilizing ion exchange resin in the softening good and easy regeneration for the treatment of effect.A washing machine for ion exchange resin water softening device is housed, on the top of washing machine, ion exchange resin water softening device is housed, water softening device is mainly made up of top salt container and bottom ion exchange resin container.Salt container is for generation of salt solution, for ion exchange resin regeneration.
Prior art also discloses a kind of washing machine with water-softening plant, and it has improved dissolubility and the water softening performance of washing agent simultaneously.Described washing machine comprises: cylinder; Water supply, for being fed to cylinder by water; Detergent supply device, for being fed to cylinder by washing agent; Water-softening plant, for demineralized water.Water-softening plant is provided so that can mix with the washing agent of supplying from detergent supply device from the water of water supply supply, and the water then mixing with washing agent can be supplied to water-softening plant.
Application number is that the Chinese patent of CN200610103681.X discloses a kind of washing machine water hardness control method, and the method is for being equipped with the automatic washing machine of ion exchange resin water softening device and control device; In the inside of washing machine, water hardness checkout gear is housed; Control device, according to the testing result of the water hardness checkout gear on washing machine, is controlled demineralized water electromagnetic valve, demineralized water discharge electromagnetic valve, the switching of intake pipe of washing machine electromagnetic valve, tap water direct is tapped into into washtub or by water softening device and enter washtub; Water softening device of every use, carries out the salt water reuse (treatment processing of primary ions exchanger resin, and control device recording processing number of times also shows that its accumulation result store, and in the time that accumulative total number of processes reaches setting value, sends warning, prompting user add salt.
Said structure mainly lays particular emphasis on the effect of softening plant and the research of renovation process, the impact on complete machine while not having to consider to be installed on washing machine, and produced following shortcoming:
1, water softening device and regenerating unit volume are large, structure is not compact, and water softening device and regenerating unit are arranged in washing machine and take larger space, affect structure and the appearance design of washing machine entirety;
2, water softening device and regenerating unit need external a large amount of water inlet pipe and water outlet pipes and electromagnetic valve to form turnover water route, utilize and on washing machine, have increased great amount of cost;
3, the salt of regeneration use is thrown in inconvenience, or need to open dispensing port at shell, affects the appearance design of washing machine complete machine.
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, and a kind of simple in structure, volume is little, cost is low detergent throwing device that is integrated with water softening system is provided.
Another object of the present invention is to provide a kind of washing machine with above-mentioned detergent throwing device.
For solving the problems of the technologies described above, the present invention adopts the basic conception of technical scheme to be: a kind of detergent throwing device of integrated water softening system, comprise that box body and push-and-pull be located at the input drawer in box body, described detergent throwing device is integrated with water softening system, comprise water demineralizer and softening regenerating unit, water demineralizer integrated installation is on box body, and softening regenerating unit is located at and is thrown on drawer, is integrated with the regeneration water route that is communicated with water demineralizer and softening regenerating unit on box body.
Described input drawer is provided with washing agent and throws in chamber, is integrated with washing agent and throws in the washing agent water inlet water route that chamber communicates on box body, and water demineralizer is communicated with main water intaking valve and washing agent water inlet water route.
On described box body, be integrated with the regeneration water inlet that communicate corresponding to softening regenerating unit and regeneration water inlet water route, be also provided with the regenerative wastewater draining water route communicating with water demineralizer bottom, regenerative wastewater draining water route is communicated with regenerative wastewater draining valve.
Described water demineralizer inside is filled with ion exchange resin, top is provided with the softening regeneration water inlet communicating with the water route of regenerating and the washing delivery port communicating with washing agent water inlet water route, and bottom is provided with the washing water inlet communicating with main water intaking valve and the regenerative wastewater water discharge outlet communicating with regenerative wastewater draining water route.
Described regeneration water route is provided with siphon pipe, when ion exchange resin regeneration in water demineralizer, utilize the water inlet of washing water inlet to produce siphonage by the draining of regenerative wastewater water discharge outlet, softening regeneration water inlet is provided with control valve, be preferably ball-cock assembly, in the time of demineralized water, water in water demineralizer is full of water demineralizer, and ball float floats blocks softening regeneration water inlet, prevents that demineralized water from entering regeneration water route.
Described input drawer is provided with softening regeneration chamber, and softening regenerating unit is located in softening regeneration chamber, and bottom is filtering grid, and the inner salt of placing of softening regenerating unit, is provided with check-valves between softening regeneration chamber and regeneration water route.
Further, described filtering grid is that a side of V font or corresponding check-valves is inclined-plane, can make to have enough saline solution spaces between filtering grid bottom and softening regeneration cavity bottom, also can increase running water and salt and dissolve contact area.
In described regeneration water route or softening regeneration chamber, be provided with and detect the salt detection terminal that has or not salt, judge whether salt in addition by detecting saline solution electrical conductivity.
Described check-valves comprises is located at regeneration water route communicate with softening the regenerating unit push rod of one end, valve chamber and the liquid outlet of the softening cavity bottom of regenerating, valve chamber communicates with softening regeneration chamber interior, is provided with spring and moves the spool of blocking liquid outlet by spring reset in valve chamber.
Described input drawer is also provided with softening agent and throws in chamber, is integrated with softening agent and throws in the corresponding softening agent water inlet communicating of chamber and softening agent water inlet water route on box body.
Washing machine of the present invention is provided with washings hardness detection module, comprises water hardness sensor.
When water inlet, main water intaking valve is opened, running water enters into water demineralizer from bottom wash water inlet, the ion exchange resin that water demineralizer inside is full of of flowing through, fully displace Ca, Mg ion in water, then flow out from water demineralizer top washing delivery port, through the integrated washing agent water inlet water route of box body, flow into the washing agent input chamber of throwing in drawer, finally enter in steel ladle.The water hardness sensor being arranged in steel ladle can be measured washings hardness after treatment, and passes to computer board of washing machine, and in the time that the water hardness exceedes limit value, thinking that ion exchange resin in water demineralizer had lost efficacy needs regeneration.When softening regeneration, pull-out drawer is thrown in salt in softening agent is thrown in chamber, then drawer is pushed in box body.Outside running water flows into softening regenerating unit by the regeneration water inlet being integrated with on box body and regeneration water inlet water route and dissolves salt, forms saturated aqueous common salt.Check-valves push rod is pushed spool open, check-valves is opened, regenerative wastewater draining valve is opened, open main water intaking valve 1-2s, after producing siphonage, regeneration water route closes again main water intaking valve, saturated aqueous common salt in softening regeneration chamber is slowly flowed in water demineralizer by check-valves, regeneration water route, softening regeneration water inlet successively, fully exchange with ion exchange resin, be Na ion Ca, Mg ion exchange, then the mixed saline solution that contains a large amount of Ca, Mg ion discharged through regenerative wastewater draining water route, regenerative wastewater water discharge outlet, regenerative wastewater draining valve successively.Regenerative wastewater draining valve connects washing machine sewer pipe and directly enters sewer.In the time that salt in salt drop spaces is not enough, can not form saturated aqueous common salt, salt detection terminal detects that this situation reports to the police immediately, prompting user add salt.
Adopt after technique scheme, the present invention compared with prior art has following beneficial effect.
The present invention is integrated into water softening system on detergent throwing device, and original supply channel Uniting, and compact conformation, saving space, do not affect complete machine outward appearance; Modularization is installed, and production cost is low; Utilize washing agent to throw in drawer feature easy to use, will soften regenerating unit and be integrated on washing agent input drawer, salt is thrown in convenient, and can automatically be detected regeneration salt residual volume.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Brief description of the drawings
Fig. 1 is the box body exploded perspective view of detergent throwing device of the present invention;
Fig. 2 is the input drawer exploded perspective view of detergent throwing device of the present invention;
Fig. 3 is detergent throwing device cutaway view of the present invention.
Detailed description of the invention
As shown in Figure 1 to Figure 3, detergent throwing device of the present invention, comprise that box body 1 and push-and-pull be located at the input drawer 2 in box body 1, described detergent throwing device is integrated with water softening system, comprise water demineralizer 3 and softening regenerating unit 4, water demineralizer 3 integrated installations are on box body 1, and softening regenerating unit 4 is located at and is thrown on drawer 2, is integrated with the regeneration water route 5 that is communicated with water demineralizer 3 and softening regenerating unit 4 on box body 1.
As shown in Figure 2, described input drawer 2 is provided with washing agent and throws in chamber 21 and softening agent input chamber 22, also be provided with softening regeneration chamber 23 in the inner of throwing in drawer 2, softening regenerating unit 4 is located in softening regeneration chamber 23, bottom is filtering grid 41, the inner salt of placing of softening regenerating unit 4, is provided with check-valves 6 between softening regeneration chamber 23 and regeneration water route 5.
As shown in Figure 1, be integrated with washing agent and throw in the washing agent water inlet water route 11 that chamber 21 communicates on described box body 1, water demineralizer 3 is communicated with main water intaking valve and washing agent water inlet water route 11; In addition, on box body 1, be integrated with the regeneration water inlet that communicate 12 corresponding to softening regenerating unit 4 and regeneration water inlet water route 13, also be provided with the regenerative wastewater draining water route 14 communicating with water demineralizer 3 bottoms, regenerative wastewater draining water route 14 is communicated with (consulting Fig. 3) with regenerative wastewater draining valve 7.Corresponding softening agent is thrown in chamber 22, is integrated with softening agent and throws in the corresponding softening agent water inlet 15 communicating of chamber 22 and softening agent water inlet water route 16 on box body 1.
Further, described box body 1 comprises the end box 19 of top cover 17, water route plate 18 and bottom from top to bottom successively.Regeneration water inlet 12 and softening agent water inlet 15 are located on top cover 17, washing agent water inlet water route 11, regeneration water inlet water route 13 and softening agent water inlet water route 16 are integrated on water route plate 18, water demineralizer 3 is located at the inner of end box 19, regenerative wastewater draining water route 14 is integrated in the below of the interior water demineralizer 3 of end box 19, is also provided with delivery port 10(and consults Fig. 1 on end box 19).
As shown in Figure 1, water demineralizer of the present invention 3 inside are filled with ion exchange resin, top is provided with the softening regeneration water inlet 31 communicating with the water route 5 of regenerating and the washing delivery port 32 communicating with washing agent water inlet water route 11, and bottom is provided with the washing water inlet (not shown) communicating with main water intaking valve and the regenerative wastewater water discharge outlet 33(communicating with regenerative wastewater draining water route 14 consulted Fig. 3).
The inner salt of placing of described softening regenerating unit 4 is regenerated for the sodium ion of ion exchange resin, bottom filtering grid 41 can be held back bulk and not dissolve salt and undissolved large granular impurity in by saline solution, avoid water line block, preferred filtering grid 41 is V font (consulting Fig. 2), dissolves contact area to increase running water and salt.In described regeneration water route 5 or softening regeneration chamber 23, be provided with and detect the salt detection terminal (not shown) that has or not salt, judge whether salt in addition by detecting saline solution electrical conductivity.
As shown in Figure 3, check-valves 6 of the present invention comprises is located at regeneration water route 5 communicate with softening regenerating unit 4 push rod 61 of one end, valve chamber 62 and the liquid outlet 63 of the softening cavity bottom of regenerating, valve chamber 62 communicates with softening regeneration chamber 23 inside, is provided with spring 64 and moves the spool 65 of blocking liquid outlet 63 by spring reset in valve chamber 62.
Regeneration of the present invention water route 5 is provided with siphon pipe (not shown), utilizes the water inlet of washing water inlet to produce siphonage by the draining of regenerative wastewater water discharge outlet when ion exchange resin regeneration in water demineralizer.Or regeneration water route 5 is provided with draining pump.
Softening regeneration water inlet is provided with control valve, is preferably ball-cock assembly 8(and consults Fig. 3), in the time of demineralized water, the water in water demineralizer is full of water demineralizer, and ball float floats blocks softening regeneration water inlet, prevents that demineralized water from entering regeneration water route, or is other check valve.
Washing machine of the present invention is provided with washings hardness detection module, comprises water hardness sensor, is installed in water tub of washing machine.Or, further, to the water route of water demineralizer, be provided with the second water hardness sensor to detect hardness of water from the beginning at main water intaking valve, if the water hardness meets washing requirement, without directly intaking in steel ladle through water softening.
When water inlet, main water intaking valve is opened, running water enters into water demineralizer from bottom wash water inlet, the ion exchange resin that water demineralizer inside is full of of flowing through, fully displace Ca, Mg ion in water, then flow out from water demineralizer top washing delivery port, through the integrated washing agent water inlet water route of box body, flow into the washing agent input chamber of throwing in drawer, finally enter in steel ladle.The water hardness sensor being arranged in steel ladle can be measured washings hardness after treatment, and passes to computer board of washing machine, and in the time that the water hardness exceedes limit value, thinking that ion exchange resin in water demineralizer had lost efficacy needs regeneration.When softening regeneration, pull-out drawer is thrown in salt in softening agent is thrown in chamber, then drawer is pushed in box body.Outside running water flows into softening regenerating unit by the regeneration water inlet being integrated with on box body and regeneration water inlet water route and dissolves salt, forms saturated aqueous common salt.Check-valves push rod is pushed spool open, check-valves is opened, regenerative wastewater draining valve is opened, open main water intaking valve 1-2s, after producing siphonage, regeneration water route closes again main water intaking valve, saturated aqueous common salt in softening regeneration chamber is slowly flowed in water demineralizer by check-valves, regeneration water route, softening regeneration water inlet successively, fully exchange with ion exchange resin, be Na ion Ca, Mg ion exchange, then the mixed saline solution that contains a large amount of Ca, Mg ion discharged through regenerative wastewater draining water route, regenerative wastewater water discharge outlet, regenerative wastewater draining valve successively.Regenerative wastewater draining valve connects washing machine sewer pipe and directly enters sewer.In the time that salt in salt drop spaces is not enough, can not form saturated aqueous common salt, salt detection terminal detects that this situation reports to the police immediately, prompting user add salt.
Embodiment in above-described embodiment is only that the preferred embodiments of the present invention are described; not the spirit and scope of the present invention are limited; do not departing under the prerequisite of 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. the detergent throwing device of an integrated water softening system, comprise that box body and push-and-pull be located at the input drawer in box body, it is characterized in that: described detergent throwing device is integrated with water softening system, comprise water demineralizer and softening regenerating unit, water demineralizer integrated installation is on box body, softening regenerating unit is located at and is thrown on drawer, is integrated with the regeneration water route that is communicated with water demineralizer and softening regenerating unit on box body.
2. detergent throwing device according to claim 1, it is characterized in that: described input drawer is provided with washing agent and throws in chamber, on box body, be integrated with washing agent and throw in the washing agent water inlet water route that chamber communicates, water demineralizer is communicated with main water intaking valve and washing agent water inlet water route.
3. detergent throwing device according to claim 2, it is characterized in that: on described box body, be integrated with the regeneration water inlet that communicate corresponding to softening regenerating unit and regeneration water inlet water route, also be provided with the regenerative wastewater draining water route communicating with water demineralizer bottom, regenerative wastewater draining water route is communicated with regenerative wastewater draining valve.
4. detergent throwing device according to claim 3, it is characterized in that: described water demineralizer inside is filled with ion exchange resin, top is provided with the softening regeneration water inlet communicating with the water route of regenerating and the washing delivery port communicating with washing agent water inlet water route, and bottom is provided with the washing water inlet communicating with main water intaking valve and the regenerative wastewater water discharge outlet communicating with regenerative wastewater draining water route.
5. detergent throwing device according to claim 4, it is characterized in that: described regeneration water route is provided with siphon pipe, when ion exchange resin regeneration in water demineralizer, utilize the water inlet of washing water inlet to produce siphonage by the draining of regenerative wastewater water discharge outlet, softening regeneration water inlet is provided with control valve, be preferably ball-cock assembly, in the time of demineralized water, the water in water demineralizer is full of water demineralizer, ball float floats blocks softening regeneration water inlet, prevents that demineralized water from entering regeneration water route.
6. according to the arbitrary described detergent throwing device of claim 1-5, it is characterized in that: described input drawer is provided with softening regeneration chamber, softening regenerating unit is located in softening regeneration chamber, bottom is filtering grid, the inner salt of placing of softening regenerating unit, is provided with check-valves between softening regeneration chamber and regeneration water route.
7. detergent throwing device according to claim 6, is characterized in that: in described regeneration water route or softening regeneration chamber, be provided with and detect the salt detection terminal that has or not salt, judge whether salt in addition by detecting saline solution electrical conductivity.
8. detergent throwing device according to claim 6, it is characterized in that: described check-valves comprises is located at regeneration water route communicate with softening the regenerating unit push rod of one end, valve chamber and the liquid outlet of the softening cavity bottom of regenerating, valve chamber communicates with softening regeneration chamber interior, is provided with spring and moves the spool of blocking liquid outlet by spring reset in valve chamber.
9. detergent throwing device according to claim 1, is characterized in that: described input drawer is also provided with softening agent and throws in chamber, is integrated with softening agent and throws in the corresponding softening agent water inlet communicating of chamber and softening agent water inlet water route on box body.
10. have as arbitrary in claim 1-9 as described in the washing machine of detergent throwing device, it is characterized in that, this washing machine is provided with washings hardness detection module, comprises water hardness sensor.
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| CN201210499551.8A CN103850096B (en) | 2012-11-30 | 2012-11-30 | The detergent throwing device of integrated water softening system and the washing machine with the device |
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| CN201210499551.8A CN103850096B (en) | 2012-11-30 | 2012-11-30 | The detergent throwing device of integrated water softening system and the washing machine with the device |
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| CN103850096A true CN103850096A (en) | 2014-06-11 |
| CN103850096B CN103850096B (en) | 2018-02-23 |
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| CN107201631A (en) * | 2017-07-11 | 2017-09-26 | 海信（山东）冰箱有限公司 | Washing machine automatic release device and roller washing machine with water treatment function |
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| CN108699753A (en) * | 2016-03-11 | 2018-10-23 | 伊莱克斯家用电器股份公司 | Washing machine and its control method |
| CN109124526A (en) * | 2017-06-15 | 2019-01-04 | 青岛海尔洗碗机有限公司 | A kind of water-softening plant and the dish-washing machine for being equipped with the water-softening plant |
| WO2020006951A1 (en) * | 2018-07-05 | 2020-01-09 | 无锡小天鹅电器有限公司 | Base assembly and laundry treatment device having same |
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| CN111279027B (en) * | 2017-10-24 | 2023-01-17 | 三星电子株式会社 | Washing machine with detergent supply device |
| WO2020006951A1 (en) * | 2018-07-05 | 2020-01-09 | 无锡小天鹅电器有限公司 | Base assembly and laundry treatment device having same |
| WO2020173001A1 (en) * | 2019-02-28 | 2020-09-03 | 无锡小天鹅电器有限公司 | Clothing treatment device |
| WO2021129310A1 (en) * | 2019-12-26 | 2021-07-01 | 青岛海尔洗衣机有限公司 | Washing machine |
| CN114867899A (en) * | 2019-12-26 | 2022-08-05 | 青岛海尔洗衣机有限公司 | Washing machine |
| CN114867899B (en) * | 2019-12-26 | 2024-03-22 | 青岛海尔洗衣机有限公司 | Washing machine |
| CN113622160A (en) * | 2020-05-06 | 2021-11-09 | 青岛海尔洗衣机有限公司 | Washing machine precleaning structure and washing machine |
| CN113622160B (en) * | 2020-05-06 | 2023-12-15 | 佛山市顺德海尔电器有限公司 | Washing machine pre-cleaning structure and washing machine |
| CN114622385A (en) * | 2020-12-14 | 2022-06-14 | 云米互联科技(广东)有限公司 | Detergent box for washing machine, water inlet system and washing machine |
| CN112726135A (en) * | 2020-12-24 | 2021-04-30 | 云米互联科技(广东)有限公司 | Clothes processing device and anti-scaling method of heating element |
| WO2023184695A1 (en) * | 2022-03-31 | 2023-10-05 | 合肥美的洗衣机有限公司 | Detergent box assembly and washing apparatus |
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Effective date of registration: 20160706 Address after: 266101 Haier Industrial Park, No. 1, Haier Road, hi tech park, Laoshan District, Shandong, China Applicant after: Qingdao Haier Drum Washing Machine Co., Ltd. Address before: 266101 Haier Industrial Park, No. 1, Haier Road, hi tech park, Laoshan District, Shandong, China Applicant before: haier group corporation Applicant before: Qingdao Haier Drum Washing Machine Co., Ltd. |
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