CN101029445A - Washer with hardness controller and water hardness controlling method - Google Patents
Washer with hardness controller and water hardness controlling method Download PDFInfo
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- CN101029445A CN101029445A CN 200610103681 CN200610103681A CN101029445A CN 101029445 A CN101029445 A CN 101029445A CN 200610103681 CN200610103681 CN 200610103681 CN 200610103681 A CN200610103681 A CN 200610103681A CN 101029445 A CN101029445 A CN 101029445A
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Abstract
A method for controlling water hardness of washer is used for automatic washer with ion-exchange resin water softener and controller. The process is carried out by inspecting water hardness by inspector, controlling softened-water electromagnetic valve, softened-water discharge electromagnetic valve and water-intake pipe electromagnetic valve turnoff/turn-on, passing running-water into washing drum or passing into washing drum by water softener, ion-exchange resin salt brine reclaim treating, recording treating time by controller, accumulating, displaying, storing, alarming while reaching accumulation end to a certain value, reminding users to add into salt and judging running-water hardness. It saves resources and has better softened water quality.
Description
Technical field
The present invention relates to a kind of washing machine, particularly a kind of washing machine and water hardness control method with Hardness Control device.
Background technology
Hard water can reduce the efficient of washing agent, when containing the CATION of divalent calcium ion as the water hardening composition, magnesium ion etc. in the water in laundry, these calcium ions, the surfactant reaction generates the metallicity soap of non-dissolving in magnesium ion and the washing agent, has reduced the surfactant quantity that helps doing washing and has reduced the decontamination ability.The clothes that comes out with hard water looks black dull, slovenly, feels and feels coarse, stiff.Divalent calcium ion, magnesium ion and dust have been combined into insoluble salt, make the difficult removal of spot.And the dirt on the clothing is introduced how stealthy mineral matter in laundry water, makes water quality harder.With the fiber that hard water is washed clothes and also can be spoiled a dress, make the shortening in service life of clothing reach 40%.
For solving the adverse effect of hard water to laundry, a kind of washing machine that the ion exchange resin water softening device is housed arises at the historic moment.Chinese patent 00122234.1 discloses a kind of washing machine that cleans by the adverse effect of removing metal cation.This patent is on the top of washing machine the ion exchange resin water softening device to be housed, and described water softening device mainly is made up of top salt container and bottom ion exchange resin container.The salt container is to be used to produce salt solution, uses for ion exchange resin regeneration.The quantity of the salt that is added in the salt container must be for ion exchange resin regeneration repeatedly, this patent 500g salt of once can packing into.This quantity is exactly can be for regeneration 33 times for ion exchange resin regeneration consumption 15g once.The volume of salt container 32 is made 500ml-550ml, and its inside can hold the dried salt of 500g.
Ion exchange resin is regenerated as follows: salt solution is supplied with electromagnetic valve and is opened, water is stored in the saline container, so the salt dissolving, make salt solution from the water the inside that granular membrane flows into again.Therefore the about salt of the water-soluble 15g that terminates an agreement of injection of 130ml generate concentration and be 10% salt solution.Salt solution flows into ion exchange resin downwards by siphon pipe it is regenerated.The discharge water that contains after the regeneration of a large amount of hardeners is discharged by drainpipe.
The method of the salt solution of this invention generation 10%, be that water is stored in the saline container 31, and the salt container 32 that holds salt also is to be placed in this saline container 31, there is water to exist, salt will constantly dissolve in water, till the saturated concentration that reaches under this temperature, therefore the salt solution of 10% concentration can't guarantee.Be to estimate with access times by the user with salt when in addition, neither science is also inconvenient.Moreover for different regions, even the hardness of water difference is also may be different in the hardness of water from the beginning of areal different time.If, completely all after softening plant is softening, use, also be a kind of waste no matter whether be hard water.The technical scheme how salt solution of relevant 10% concentration guarantees is open in another patent application of applicant.
Summary of the invention
Technical problem to be solved by this invention is at the above-mentioned deficiency of prior art, and to provide a kind of washing machine with Hardness Control device and the water hardness control method that can control the washing machine water hardness automatically.
A kind of washing machine water hardness control method, this method is used to be equipped with the automatic washing machine of ion exchange resin water softening device and control device; Described ion exchange resin water softening device mainly comprises salt container and ion exchange resin container, connect with the pipeline that is provided with proportional valve between salt container and the ion exchange resin container, the water inlet pipe of described ion exchange resin container connects intake pipe of washing machine by the demineralized water electromagnetic valve; Described intake pipe of washing machine connects the washtub water inlet pipe by electromagnetic valve, and the top of described ion exchange resin container is provided with the demineralized water discharge pipe, and described demineralized water discharge pipe connects washtub by pipeline, it is characterized in that:
(1) in the inside of washing machine water hardness checkout gear is housed;
(2) control device is according to the testing result of the water hardness checkout gear on the washing machine, and control demineralized water electromagnetic valve, demineralized water are discharged electromagnetic valve, the intake pipe of washing machine electromagnetic valve opens and closes, and makes running water directly enter washtub or enters washtub by water softening device;
(3) water softening device of every use promptly carries out the salt water reuse (treatment of primary ions exchanger resin and handles, and control device recording processing number of times and its accumulation result shown stores, and when the accumulative total number of processes reaches setting value, sends caution, and the prompting user adds salt.
Described washing machine water hardness control method is characterized in that: the salt solution playback processing program of described ion exchange resin is as follows:
Control device obtains setting the salt solution of concentration according to inflow in the salt container and flooding time, according to the brine strength of setting and the water capacity of ion exchange resin container, control enters the salt water yield of the setting concentration of ion exchange resin container, makes the concentration of regenerate brine be in 10% optimum concentration value;
Salt solution with 10% concentration cleans ion exchange resin; Discharge behind the certain hour;
Remain in saline solution on the ion exchange resin with the clear water flush away again.
Described washing machine water hardness control method is characterized in that: the content of mineral substances that detects running water when the water hardness checkout gear in the washing machine then is a hard water during greater than 60 mg/litre, and the control electromagnetic valve makes running water enter washtub by water softening device.
A kind of washing machine with water hardness control device of implementing described method comprises: be located at water supply pipe, the entering water electromagnetic valve on casing of washing machine top, sodium ion exchange resin water-softening plant and the computer control panel of being located at the drainpipe of washtub bottom, being made of saline container and sodium ion exchange resin container; Certain metered valve is connected between described saline container and the sodium ion exchange resin container with pipeline; One water inlet pipe connects described saline container and sodium ion exchange resin container by saline container entering water electromagnetic valve and plastic holding device entering water electromagnetic valve respectively; The top of described sodium ion exchange resin container is provided with the demineralized water outlet and the bottom is provided with the replacing water discharge pipe; Described demineralized water outlet connects washtub by pipeline; Described replacing water discharge pipe connects washing machine sewer pipe; It is characterized in that: described Hardness Control device comprises described computer control panel and is installed on the water hardness checkout gear of washing machine inside, the computer control panel is controlled described plastic holding device entering water electromagnetic valve, saline container entering water electromagnetic valve, the work of demineralized water electromagnetic valve according to the detected water hardness numerical value of this checkout gear; And record work number of times, when reaching set point number, sending caution, the prompting user adds salt.
Described washing machine with water hardness control device is characterized in that: the action frequency of computer control panel accumulative total proportional valve or demineralized water electromagnetic valve, as regeneration of ion-exchange resin number of times record; On saline container, cover and be provided with a reset switch, at every turn with salt, with the zero clearing of regeneration of ion-exchange resin number of times.
Described washing machine with water hardness control device, it is characterized in that: the brine strength in the ion exchange resin container does not reach setting value, water hardness checkout gear in the washing machine detects the water hardness and does not reduce when being not suitable for washing, then control device sends caution, and the prompting user adds salt;
Described washing machine with water hardness control device is characterized in that: also be provided with saline container salt quantity sensor in the salt container.
Described washing machine with water hardness control device is characterized in that: described salt quantity sensor is a weight sensor,
The invention has the advantages that:
1, judge hardness of water from the beginning, whether decision starts softening plant according to hardness, avoids waste.
2, point out automatically whether need add in the water-softening plant regeneration use salt, guarantee to wash the water correction quality.
For architectural feature of the present invention and effect thereof are had further understanding, enumerate specific embodiment now and be described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 is the structural representation that the present invention has the washing machine of Hardness Control device.
Fig. 2 is the softening plant structural representation that the present invention is located at the ion exchange resin in the washing machine.
Fig. 3 is the flow chart of one of washing machine water hardness control method of the present invention.
Fig. 4 is two a flow chart of washing machine water hardness control method of the present invention.
The specific embodiment
Washing machine water hardness control method provided by the present invention is used to be equipped with the automatic washing machine of ion exchange resin water softening device and control device; Described ion exchange resin water softening device mainly comprises salt container 71 and ion exchange resin container 72 (as shown in Figure 1, 2), connect with the pipeline that is provided with proportional valve 73 between salt container 71 and the ion exchange resin container 72, the water inlet pipe of described ion exchange resin container 72 connects intake pipe of washing machine 4 by demineralized water electromagnetic valve 77; Be respectively equipped with water inlet pipe 74,75 on saline container 71 and the sodium ionomer resin container 72, and be respectively equipped with electromagnetic valve 76,77 on the described water inlet pipe.The described saline container 71 of being located at is connected described water supply pipe 4 with electromagnetic valve 76,77 on the sodium ionomer resin container 72.Described intake pipe of washing machine 4 connects washtub water inlet pipe 8 by electromagnetic valve 79, and the top of described ion exchange resin container 72 is provided with demineralized water discharge pipe 78, and described demineralized water discharge pipe 78 connects washtub.Hardness of water is so that determine whether and need soften processing to running water from the beginning in order to detect, and therefore Hardness Control device provided by the present invention at first is that water hardness checkout gear is housed in washing machine; The concrete steps of present embodiment method are as follows:
(1) water hardness checkout gear is housed in washing machine;
(2) control device (as the computer plate) is according to the testing result of the water hardness checkout gear in the washing machine, and control demineralized water electromagnetic valve 77, intake pipe of washing machine electromagnetic valve 79 open and close.When the testing result of water hardness checkout gear meets the demineralized water condition, then demineralized water electromagnetic valve 77 cuts out, and water inlet pipe electromagnetic valve 79 is opened, and running water directly enters washtub; If the testing result of water hardness checkout gear does not meet the demineralized water condition, then demineralized water electromagnetic valve 77 is opened, and water inlet pipe electromagnetic valve 79 cuts out, and running water enters washtub by water softening device.
(3) control device is controlled the regeneration to water softening device automatically, for avoiding concentrating regeneration to need the long period, concrete grammar is, water softening device of every use, promptly carry out the salt water reuse (treatment of primary ions exchanger resin and handle, control device recording processing number of times also stores its accumulation result, when the accumulative total number of processes reaches setting value, send caution, the prompting user adds salt.
(4) water hardness checkout gear in being arranged on washing machine detects when the softening washings hardness of handling that enters washtub exceeds standard, and shows and need carry out regeneration of ion-exchange resin; Control device starts the reproducer of water softening device, and detects the salt amount in the salt container;
When (5) the salt amount in detecting the salt container is lower than setting value, send caution, the prompting user adds salt.
The reproducer of described water softening device is:
(1) electromagnetic valve 76 is opened in control device control, enter the brine strength of sodium ionomer resin container 72 with the water yield and time method control in the control feeding saline container 71, open quantitative electromagnetic valve 73 again, control the salt water yield that from saline container, enters in the sodium ionomer resin container with proportional valve 73, make the concentration of regenerate brine be in 10% optimum concentration value;
(2) salt solution with 10% concentration cleans ion exchange resin; Discharge behind the certain hour;
(3) remain in saline solution on the ion exchange resin with the clear water flush away again.
The content of mineral substances that described demineralized water condition is a running water then is a hard water during greater than 60 mg/litre, and the control electromagnetic valve makes running water enter washtub by water softening device.
The content of mineral substances that described demineralized water condition is a running water then is a hard water during greater than 60 mg/litre, and the control electromagnetic valve makes running water enter washtub by water softening device.
The present invention also provides a kind of washing machine with water hardness control device of implementing said method, and described washing machine comprises: be located at water supply pipe 4, the entering water electromagnetic valve 79 on casing of washing machine 1 top, sodium ion exchange resin water-softening plant 7 and the computer control panel of being located at the drainpipe 9 of washtub 2 bottoms, being made of saline container 71 and sodium ion exchange resin container 72; Certain metered valve 73 is connected between described saline container 71 and the sodium ion exchange resin container 72 with pipeline; One water inlet pipe connects described saline container 71 and sodium ion exchange resin container 72 by saline container entering water electromagnetic valve 76 and plastic holding device entering water electromagnetic valve 77 and pipeline 74 and 75 respectively; The top of described sodium ion exchange resin container 72 is provided with demineralized water outlet 78 and replacing water discharge pipe 80; Described demineralized water outlet 78 connects washtub 2 by pipeline; Described replacing water discharge pipe 80 is discharged electromagnetic valve 81 by replacing water and is connect washing machine sewer pipe 9.
Described Hardness Control device comprises control device and checkout gear, and described control device is the computer plate of existing automatic washing machine, and the various programs that just increased relevant demineralized water control, detect are comprising the regeneration of sodium ion exchange resin.
The washings hardness that comprises described checkout gear detects and the regeneration of sodium ion exchange resin detects, it is that water hardness checkout gears are installed at other positions on intake pipe of washing machine, in the washtub or in the washing machine in the present embodiment that described washings hardness detects, water hardness checkout gear in the described washing machine connects described computer control panel, the computer control panel is controlled described demineralized water electromagnetic valve, the work of water inlet pipe electromagnetic valve according to the detected water hardness numerical value of the water hardness checkout gear in the washing machine; When the testing result of water hardness checkout gear meets the demineralized water condition, then demineralized water electromagnetic valve 77 cuts out, and water inlet pipe electromagnetic valve 79 is opened, and running water directly enters washtub; If the testing result of water hardness checkout gear does not meet the demineralized water condition, then demineralized water electromagnetic valve 77 is opened, and water inlet pipe electromagnetic valve 79 cuts out, and running water enters washtub by water softening device.
Control device is also noted down the work number of times, when reaching set point number, sends caution, and the prompting user adds salt.
Described work number of times record is the action frequency of computer control panel accumulative total proportional valve or demineralized water electromagnetic valve, as regeneration of ion-exchange resin number of times record; On saline container, cover and also be provided with a reset switch, at every turn with salt, with the zero clearing of regeneration of ion-exchange resin number of times.
Described regeneration of ion-exchange resin checkout gear is in the demineralized water outlet on sodium ion exchange resin container top, or be provided with water hardness checkout gear in the washtub, when detecting when the softening water of handling does not reach the demineralized water standard-required, show that ion exchange resin is saturated by calcium ions and magnesium ions, need clean exchanger resin.
Brine strength in the ion exchange resin container does not reach setting value, water hardness checkout gear in the washing machine detects when the softening water hardness of handling does not reduce or do not reach the demineralized water standard-required, then control device sends caution, and the prompting user adds salt;
In the salt container, also can establish a salt quantity sensor (not shown) that is used to detect saline container salt amount, described salt quantity sensor is a weight sensor, according to the weight of saline container judge in the saline container the salt amount what, or described salt quantity sensor is the brine strength sensor, if the salt amount is less than setting value, then control device sends caution, and the prompting user adds salt.
Claims (8)
1, a kind of washing machine water hardness control method, this method is used to be equipped with the automatic washing machine of ion exchange resin water softening device and control device; Described ion exchange resin water softening device mainly comprises salt container and ion exchange resin container, connect with the pipeline that is provided with proportional valve between salt container and the ion exchange resin container, the water inlet pipe of described ion exchange resin container connects intake pipe of washing machine by the demineralized water electromagnetic valve; Described intake pipe of washing machine connects the washtub water inlet pipe by electromagnetic valve, and the top of described ion exchange resin container is provided with the demineralized water discharge pipe, and described demineralized water discharge pipe connects washtub by pipeline, it is characterized in that:
(1) in the inside of washing machine water hardness checkout gear is housed;
(2) control device is according to the testing result of the water hardness checkout gear on the washing machine, and control demineralized water electromagnetic valve, demineralized water are discharged electromagnetic valve, the intake pipe of washing machine electromagnetic valve opens and closes, and makes running water directly enter washtub or enters washtub by water softening device;
(3) water softening device of every use promptly carries out the salt water reuse (treatment of primary ions exchanger resin and handles, and control device recording processing number of times and its accumulation result shown stores, and when the accumulative total number of processes reaches setting value, sends caution, and the prompting user adds salt.
2, washing machine water hardness control method according to claim 1, it is characterized in that: the salt solution playback processing program of described ion exchange resin is as follows:
Control device obtains setting the salt solution of concentration according to inflow in the salt container and flooding time, according to the brine strength of setting and the water capacity of ion exchange resin container, control enters the salt water yield of the setting concentration of ion exchange resin container, makes the concentration of regenerate brine be in 10% optimum concentration value;
Salt solution with 10% concentration cleans ion exchange resin; Discharge behind the certain hour;
Remain in saline solution on the ion exchange resin with the clear water flush away again.
3, washing machine water hardness control method according to claim 1, it is characterized in that: the content of mineral substances that detects running water when the water hardness checkout gear in the washing machine is during greater than 60 mg/litre, then be hard water, the control electromagnetic valve makes running water enter washtub by water softening device.
4, a kind of washing machine with water hardness control device of implementing the described method of claim 1 comprises: be located at water supply pipe, the entering water electromagnetic valve on casing of washing machine top, sodium ion exchange resin water-softening plant and the computer control panel of being located at the drainpipe of washtub bottom, being made of saline container and sodium ion exchange resin container; Certain metered valve is connected between described saline container and the sodium ion exchange resin container with pipeline; One water inlet pipe connects described saline container and sodium ion exchange resin container by saline container entering water electromagnetic valve and plastic holding device entering water electromagnetic valve respectively; The top of described sodium ion exchange resin container is provided with the demineralized water outlet and the bottom is provided with the replacing water discharge pipe; Described demineralized water outlet connects washtub by pipeline; Described replacing water discharge pipe connects washing machine sewer pipe; It is characterized in that: described Hardness Control device comprises described computer control panel and is installed on the water hardness checkout gear of washing machine inside, the computer control panel is controlled described plastic holding device entering water electromagnetic valve, saline container entering water electromagnetic valve, the work of demineralized water electromagnetic valve according to the detected water hardness numerical value of this checkout gear; And record work number of times, when reaching set point number, sending caution, the prompting user adds salt.
5, the washing machine with water hardness control device according to claim 4 is characterized in that: the action frequency of computer control panel accumulative total proportional valve or demineralized water electromagnetic valve, as regeneration of ion-exchange resin number of times record; On saline container, cover and be provided with a reset switch, at every turn with salt, with the zero clearing of regeneration of ion-exchange resin number of times.
6, the washing machine that has water hardness control device according to claim 4, it is characterized in that: the brine strength in the ion exchange resin container does not reach setting value, water hardness checkout gear in the washing machine detects when the softening water hardness of handling does not reduce or do not reach the demineralized water standard-required, then control device sends caution, and the prompting user adds salt.
7, have the washing machine of water hardness control device according to claim 4, it is characterized in that: in the salt container, also can establish a saline container salt quantity sensor.
8, have the washing machine of water hardness control device according to claim 7, it is characterized in that: described salt quantity sensor can be a weight sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610103681XA CN101029445B (en) | 2006-02-28 | 2006-07-28 | Washer with hardness controller and water hardness controlling method |
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| CN200610008086 | 2006-02-28 | ||
| CN200610008086.8 | 2006-02-28 | ||
| CN200610103681XA CN101029445B (en) | 2006-02-28 | 2006-07-28 | Washer with hardness controller and water hardness controlling method |
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| CN101029445A true CN101029445A (en) | 2007-09-05 |
| CN101029445B CN101029445B (en) | 2010-09-22 |
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| CN103850096A (en) * | 2012-11-30 | 2014-06-11 | 海尔集团公司 | Detergent placing device integrated with softened water system and washing machine with detergent placing device |
| CN103898714A (en) * | 2014-03-25 | 2014-07-02 | 无锡小天鹅股份有限公司 | Washing machine and washing machine energy consumption information display device and method |
| CN105338873A (en) * | 2013-04-24 | 2016-02-17 | 毕勤股份有限公司 | System for supplying and treating water for a washing machine, in particular a dishwasher |
| CN106381644A (en) * | 2016-10-31 | 2017-02-08 | 无锡小天鹅股份有限公司 | Washing machine |
| CN106400381A (en) * | 2016-06-27 | 2017-02-15 | 北京小米移动软件有限公司 | Method and device for releasing laundry consumables |
| CN108408835A (en) * | 2018-05-16 | 2018-08-17 | 杭州洁浦科技有限责任公司 | Water softener device and water tank cleaner |
| CN108625093A (en) * | 2017-03-17 | 2018-10-09 | 青岛海尔洗衣机有限公司 | A kind of control method and washing machine of washing machine |
| CN108699752A (en) * | 2016-04-04 | 2018-10-23 | 伊莱克斯家用电器股份公司 | Laundry machine and its control method |
| CN109796062A (en) * | 2018-12-04 | 2019-05-24 | 珠海格力电器股份有限公司 | The control method and device of water softening system in a kind of washing machine |
| CN110089986A (en) * | 2019-05-13 | 2019-08-06 | 佛山市云米电器科技有限公司 | A kind of Dishwasher water passage automatic control system and method |
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| CN110465333A (en) * | 2018-05-10 | 2019-11-19 | 佛山市顺德区美的饮水机制造有限公司 | Resin regeneration method, controller, water softening device and computer readable storage medium |
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| JP3910088B2 (en) * | 2002-03-20 | 2007-04-25 | シャープ株式会社 | Washing machine |
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| CN103850096B (en) * | 2012-11-30 | 2018-02-23 | 青岛海尔滚筒洗衣机有限公司 | The detergent throwing device of integrated water softening system and the washing machine with the device |
| CN103850096A (en) * | 2012-11-30 | 2014-06-11 | 海尔集团公司 | Detergent placing device integrated with softened water system and washing machine with detergent placing device |
| CN105338873A (en) * | 2013-04-24 | 2016-02-17 | 毕勤股份有限公司 | System for supplying and treating water for a washing machine, in particular a dishwasher |
| CN103898714A (en) * | 2014-03-25 | 2014-07-02 | 无锡小天鹅股份有限公司 | Washing machine and washing machine energy consumption information display device and method |
| CN108699752A (en) * | 2016-04-04 | 2018-10-23 | 伊莱克斯家用电器股份公司 | Laundry machine and its control method |
| CN108699752B (en) * | 2016-04-04 | 2021-08-24 | 伊莱克斯家用电器股份公司 | Laundry treating machine and control method thereof |
| CN106400381A (en) * | 2016-06-27 | 2017-02-15 | 北京小米移动软件有限公司 | Method and device for releasing laundry consumables |
| CN106400381B (en) * | 2016-06-27 | 2019-02-12 | 北京小米移动软件有限公司 | The put-on method and device of laundry consumptive material |
| CN106381644A (en) * | 2016-10-31 | 2017-02-08 | 无锡小天鹅股份有限公司 | Washing machine |
| CN108625093A (en) * | 2017-03-17 | 2018-10-09 | 青岛海尔洗衣机有限公司 | A kind of control method and washing machine of washing machine |
| CN110438728B (en) * | 2018-05-04 | 2021-12-10 | 上海海尔洗涤电器有限公司 | Control method of washing machine and washing machine |
| CN110438728A (en) * | 2018-05-04 | 2019-11-12 | 青岛海尔洗衣机有限公司 | A kind of control method and washing machine of washing machine |
| CN110465333A (en) * | 2018-05-10 | 2019-11-19 | 佛山市顺德区美的饮水机制造有限公司 | Resin regeneration method, controller, water softening device and computer readable storage medium |
| CN108408835A (en) * | 2018-05-16 | 2018-08-17 | 杭州洁浦科技有限责任公司 | Water softener device and water tank cleaner |
| CN109796062A (en) * | 2018-12-04 | 2019-05-24 | 珠海格力电器股份有限公司 | The control method and device of water softening system in a kind of washing machine |
| CN109796062B (en) * | 2018-12-04 | 2020-09-22 | 珠海格力电器股份有限公司 | Control method and device for water softening system in washing machine |
| CN110089986B (en) * | 2019-05-13 | 2021-11-02 | 广东栗子科技有限公司 | Automatic control system and method for water path of dish washing machine |
| CN110089986A (en) * | 2019-05-13 | 2019-08-06 | 佛山市云米电器科技有限公司 | A kind of Dishwasher water passage automatic control system and method |
| CN111977744A (en) * | 2019-05-23 | 2020-11-24 | 青岛海尔智能技术研发有限公司 | Water softener |
| CN111018051A (en) * | 2019-12-05 | 2020-04-17 | 浙江沁园水处理科技有限公司 | Intelligent water softener and control method |
| CN113749588A (en) * | 2021-08-06 | 2021-12-07 | 佛山市顺德区美的洗涤电器制造有限公司 | Dish washing device, salt amount control method thereof and computer storage medium |
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