WO2019019892A1 - 一种洗衣机净水系统及洗衣机 - Google Patents

一种洗衣机净水系统及洗衣机 Download PDF

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Publication number
WO2019019892A1
WO2019019892A1 PCT/CN2018/094651 CN2018094651W WO2019019892A1 WO 2019019892 A1 WO2019019892 A1 WO 2019019892A1 CN 2018094651 W CN2018094651 W CN 2018094651W WO 2019019892 A1 WO2019019892 A1 WO 2019019892A1
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Prior art keywords
water
washing machine
pipe
way valve
purification module
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PCT/CN2018/094651
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English (en)
French (fr)
Inventor
王强
孟毅
刘琳琳
郝世龙
李冬
张静静
劳春峰
许升
Original Assignee
青岛海尔滚筒洗衣机有限公司
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Publication of WO2019019892A1 publication Critical patent/WO2019019892A1/zh

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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 
    • D06F39/10—Filtering arrangements
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of pumps

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  • the invention relates to a laundry device, in particular to a washing machine water purifying system and a washing machine.
  • the existing water-saving washing machine filters the washing water in the laundry rinsing stage for repeated use, and the deposit attached to the surface of the water purification module after long-term use causes the clogging of the filter hole, so that the filtration efficiency of the water purification module decreases.
  • Some water-saving washing machines generally adopt a mode of positively rinsing the filter membrane to remove contaminants attached to the surface of the membrane, that is, the flushing water flow is the same as the flow of water when filtering the membrane, and the flushing mode cannot deeply remove the surface of the membrane. Contaminants, the general effect of rinsing, make it difficult to maintain good permeability for a long time, and the water consumption during the rinsing process is large, which is not conducive to water saving.
  • the present invention has been made in view of the above.
  • Another object of the present invention is to provide a washing machine equipped with the above water purification system.
  • a washing machine water purification system including
  • the water purification module is connected to the main body of the washing machine through a pipeline, and the water in the washing machine is filtered by the water purification module and returned to the washing machine;
  • the water purification module has at least a water inlet and a water outlet, and the water inlet is connected to a washing machine drain through a first pipeline, and the water outlet is connected to a washing machine water inlet through a second pipeline, wherein the first water pump is disposed at In the second pipeline, the first water pump is also connected with the flush water supply pipe to drive the water in the flush water supply pipe to enter the water purification module from the clean water inlet, and the water purification module is backwashed.
  • flushing water supply pipe is connected to the second pipeline and located upstream of the first water pump inlet; a branch pipeline is connected downstream of the first water pump outlet, and the branch pipeline is connected to the second pipeline. And located upstream of the junction of the second pipeline and the flush water supply pipe.
  • one end of the second pipeline is connected with the water outlet, and then passes through the first three-way valve, the second three-way valve, the first water pump, the third three-way valve, and the other end is connected with the water inlet of the washing machine.
  • the flush water supply pipe is connected to the second three-way valve, and one end of the branch pipe is connected to the first three-way valve, and the other end is connected to the third three-way valve.
  • the water outlet is connected to the first three-way valve through the water outlet pipe, the first three-way valve is connected to the second three-way valve through the intermediate connection pipe, and the second three-way valve passes through the water inlet pipe and the first water pump inlet Connected, the water pump outlet is connected to the third three-way valve through the water pump outlet pipe, and the third three-way valve is connected to the water inlet of the washing machine through the water purification return pipe.
  • the water purification module includes a casing and a filter membrane disposed in the casing, the water inlet and the water outlet are separated by a filter membrane, and an inner side of the filter membrane encloses an inner passage communicating with the water outlet, and the outer side of the filter membrane is An outer passage communicating with the water inlet is formed between the housings.
  • the water purification module further has an overflow port, the overflow port is in communication with the outer channel, and an overflow pipe is externally connected, and the overflow pipe is respectively connected to the washing machine back pipe and the sewage through the fourth three-way valve a pipe connection, the washing machine return pipe is connected to the water inlet or the return port of the washing machine to discharge the water flowing out of the overflow port into the washing machine, and the drain pipe communicates with the external environment to discharge the water flowing out of the overflow port In the external environment, the fourth three-way valve is used to control the switching overflow pipe to communicate with the washing machine return pipe or the sewage pipe.
  • the water purification module further has an air inlet, the air inlet is connected to the outer passage, and is externally connected with a gas supply device for supplying air into the water purification module to make the air flow
  • the filter membrane is impacted to vibrate the filter membrane.
  • first pipeline is further provided with a second water pump, and the second water pump is configured to drive water in the washing machine to flow into the water purification module.
  • flush water supply pipe is connected to the water pipe through the fifth three-way valve, and the fifth three-way valve is also connected to the water inlet pipe of the washing machine.
  • the washing machine of the present invention has the above-described washing machine water purifying system.
  • the invention has a waterway for backwashing the water purification module, and the filter membrane is flushed from the inside to the outside with tap water, and, more preferably, the filter membrane is aerated by the air supply device while flushing, thereby further Effectively removes contaminants attached to the surface of the filter membrane, improves the filtration performance of the filter membrane, and prolongs the service life of the filter membrane.
  • the present invention utilizes the first water pump as a power, which can drive the water in the water purification module to flow into the washing machine, and can also drive the water in the water pipe to flow into the water purification module, thereby improving the impact force of the flushing water. Conducive to the rinsing of the filter membrane.
  • FIG. 1 Schematic diagram of the connection of the water purifying system of the washing machine of the present invention
  • FIG. 1 Working principle diagram of the water purification module of the present invention when filtering water
  • FIG. 3 Working principle diagram of the water purification module of the present invention during backwashing
  • washing machine 2 water pipe 3, water purification module 4, the first pipeline 5, the second pipeline 6, the first water pump 7, the second water pump 8, the flushing water supply pipe 9, the solenoid valve 10, the washing machine back Water pipe 11, sewage pipe 12, gas supply device 13, water outlet pipe 14, intermediate connection pipe 15, water pump inlet pipe 16, water pump outlet pipe 17, water purification pipe 18, branch pipe 19, casing 20, filter membrane 21
  • a washing machine water purifying system includes a water purifying module 3, a pipeline connecting the main body of the washing machine 1 and the water purifying module 3, and a water pump disposed on the pipeline; the water purifying module 3 has The water inlet 311, the water outlet 312, the overflow port 313, and the air inlet 314.
  • the water inlet 311 is located at the bottom of the water purification module 3, and is connected to the water outlet of the washing machine 1 through the first pipeline 4, and the water outlet 312 is disposed at the top of the water purification module 3, and passes through the second pipeline 5 and the washing machine.
  • the water pump comprises: a first water pump 6 disposed on the second pipeline 5, a second water pump 7 disposed on the first pipeline 4; the first water pump 6 is used to drive the water purification module 3
  • the water is returned to the washing machine 1, specifically, to the washing tub, and the second water pump 7 is used to drive the water in the washing machine 1 to flow into the water purification module 3.
  • the first water pump 6 is also connected to the flush water supply pipe 8, and the flush water supply pipe 8 is connected to the water pipe 2 or connected to other water supply devices that provide clean water, and the first water pump 6 is also used to drive the flush water supply pipe 8
  • the water enters the water purification module 3 from the purified water inlet to perform backwashing of the water purification module 3.
  • the water purification module 3 includes a housing 19 and a filter membrane 20 disposed in the housing 19.
  • the water inlet 311 and the water outlet 312 are separated by a filter membrane 20, and the inner side of the filter membrane 20 is connected to the water outlet 312.
  • the inner passage, the outer side of the filter membrane 20 and the outer casing 19 form an outer passage communicating with the water inlet 311, and the washing water discharged from the washing machine 1 enters the water purification module 3 through the water inlet 311, and the water molecules pass through the filter membrane 20 to enter.
  • the inner passage, the dirt and the detergent are blocked by the filter membrane 20 in the outer passage, and the filtered water is discharged from the water outlet 312 and returned to the washing machine 1.
  • the flushing water supply pipe 8 is connected to the second pipe 5 and located upstream of the water inlet of the first water pump 6; downstream of the water outlet of the first water pump 6 is connected with a branch pipe 18, the branch pipe 18 is connected to the second line 5 and located upstream of the junction of the second line 5 and the flushing water supply pipe 8, the flushing water is introduced into the second line 5 by the flushing water supply pipe 8, and is directed in the second line 5
  • the second pipeline 5 includes a water outlet pipe 13, a first three-way valve 21, an intermediate connection pipe 14, a second three-way valve 22, a third three-way valve 23, a water pump inlet pipe 15, and a water pump outlet.
  • the water outlet 312 is connected to the first three-way valve 21 through the water outlet pipe 13, and the first three-way valve 21 is connected to the second three-way valve 22 through the intermediate connection pipe 14, and the second three-way valve 22 is pumped through
  • the water pipe 15 is connected to the water inlet of the first water pump 6, the water pump water outlet is connected to the third three-way valve 23 through the water pump outlet pipe 16, and the third three-way valve 23 is connected to the water inlet of the washing machine 1 through the water purification return pipe 17.
  • the second three-way valve 22 is also connected to the flushing water supply pipe 8 for introducing flushing water.
  • the first three-way valve 21 and the third three-way valve 23 are also connected by a branch line 18 for The flushing water is introduced into the water purification module 3.
  • the overflow port 313 is located on the upper end side of the water purification module 3, and the overflow port 313 is in communication with the outer channel, and an overflow pipe 26 is externally connected, and the overflow pipe 26 is respectively connected to the fourth three-way valve 24
  • the washing machine return pipe 10 is connected to the drain pipe 11, and the washing machine return pipe 10 is connected to the water inlet or the return port of the washing machine 1 to discharge the water flowing out of the overflow port 313 into the washing machine 1, the drain pipe 11 and the outside
  • the environment is connected to discharge the water flowing out of the overflow port 313 into the external environment, and the fourth three-way valve 24 is used to control the switching overflow pipe 26 to communicate with the washing machine return pipe 10 or the sewage pipe 11, and the water is cleaned in the water purification module 3.
  • the overflow pipe 26 communicates with the washing machine return pipe 10, and when the water purifying module 3 is backwashed, the overflow pipe 26 communicates with the drain pipe 11.
  • the air inlet 314 is located at a lower end side of the water purification module 3, and the air inlet 314 is in communication with the outer passage, and an air supply device 12 is externally connected.
  • the air supply device 12 is an air pump.
  • the gas device 12 is configured to supply air into the water purification module 3, so that the airflow impacts the filter membrane 20, and the filter membrane 20 vibrates.
  • the gas supply device 12 operates to generate the water purification module 3. The bubbles exert an impact on the filtration membrane 20.
  • the flushing water supply pipe 8 and the washing machine inlet pipe 27 are connected to the water pipe 2 through the fifth three-way valve 25, and the fifth three-way valve 25 controls the water pipe 2 and the washing machine inlet pipe when the washing machine 1 is filled with water. 27 is connected.
  • the fifth three-way valve 25 controls the water pipe 2 to communicate with the flush water supply pipe 8.
  • the flushing water supply pipe 8, the washing machine inlet pipe 27, the overflow pipe 26, the washing machine return pipe 10, and the sewage pipe 11 are respectively provided with solenoid valves 9 for controlling the opening and closing of the pipes.
  • the working process of the washing machine water purifying system of the invention is:
  • the solenoid valve 9 on the washing machine inlet pipe 27 is opened, and the tap water enters the washing machine 1. After the water level reaches the system setting value, the solenoid valve 9 on the washing machine inlet pipe 27 is closed. After the washing is completed, the washing water is drained and then the rinsing state is entered.
  • the solenoid valve 9 on the water inlet pipe 27 of the washing machine is opened again. After the water level reaches the set value, the solenoid valve 9 is closed and the rinsing is started. At this time, the water purification module starts to operate.
  • the arrows in the figure represent the direction of water flow, and the filtration steps of the water purification module 3 are as follows:
  • the first three-way valve 21 communicates with the outlet pipe 13 and the intermediate connection pipe 14
  • the second three-way valve 22 connects the intermediate connection pipe 14 with the water pump inlet pipe 15
  • the third three-way valve 23 communicates with the water pump outlet pipe 16 and the net
  • the water return pipe 17, the solenoid valve 9 on the overflow pipe 26 is opened, the solenoid valve 9 on the washing machine return pipe 10 is opened, and then the second water pump 7 is started to pump water into the water purification module 3, and the first water pump 6 is started later.
  • the washing water enters the inside of the filtration membrane 20 from the outside of the filtration membrane 20 under pressure, and the water filtered by the water purification module 3 returns to the washing machine 1 while the water flowing out from the overflow port 313 of the water purification module 3 also returns to the washing machine. 1 inside.
  • the flow rate of the second water pump 7 is greater than the flow rate of the first water pump 6, so that part of the wash water flows out from the overflow port 313 of the water purification module 3.
  • the second water pump 7 At the end of the rinsing, the second water pump 7 first stops running, and the first water pump 6 draws the water remaining in the water purification module 3 into the washing machine 1, and then ends the rinsing, after which it enters the rinsing stage of the water purification module 3.
  • the solenoid valve 9 on the flush water supply pipe 8 is opened, the second three-way valve 22 is connected to the flush water supply pipe 8 and the water pump inlet pipe 15, and the third three-way valve 23 is connected to the water pump outlet pipe 16 and the branch water pipe, the first three The valve 21 communicates with the branch water pipe and the water outlet pipe 13, the solenoid valve 9 on the overflow pipe 26 is opened, the solenoid valve 9 on the sewage pipe 11 is opened, the air pump is started, the first water pump 6 is started, and the backwashing state is entered, and the backwashing is performed. In the state, the flushing water enters the outside of the filter membrane 20 from the inside of the filter membrane 20 under pressure, and the backwashing time can be set according to the actual operating conditions.
  • the first water pump 6 stops running, the air pump stops running, the solenoid valve 9 on the flush water supply pipe 8 is closed, the solenoid valve 9 on the overflow pipe 26, and the solenoid valve 9 on the drain pipe 11 are closed, all three The valve is switched to the initial state and the backwash maintenance is completed.
  • the present invention also relates to a washing machine equipped with the above-described washing machine water purifying system.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

本发明涉及一种洗衣机净水系统，包括，净水模块，通过管路与洗衣机本体连接，洗衣机内的水经净水模块过滤后返回至洗衣机内；驱动净水模块内的水返回至洗衣机内的第一水泵；所述净水模块至少具有入水口和出水口，所述入水口通过第一管路与洗衣机排水口连接，所述出水口通过第二管路与洗衣机进水口连接，所述第一水泵设置在第二管路上，第一水泵还与冲洗水供水管连接，以驱动冲洗水供水管内的水从净水入口进入净水模块，对净水模块进行反向冲洗。本发明还涉及一种安装有上述过滤系统的洗衣机。本发明对净水模块进行反向冲洗，从而更加的有效去除附在过滤膜表面的污染物，提高了过滤膜的过滤性能，延长了过滤膜的使用寿命。

Description

一种洗衣机净水系统及洗衣机 技术领域
本发明涉及洗衣设备，尤其是一种洗衣机净水系统及洗衣机。
背景技术
现有的节水洗衣机在洗衣漂洗阶段会对洗涤水进行过滤以重复使用，净水模块长期使用后附着在其表面的沉积物会造成滤孔的堵塞，使得净水模块的过滤效率下降，现有的节水洗衣机一般采用对过滤膜正向冲洗的模式来去除附在膜表面的污染物，即冲洗水流与过滤膜滤水时的水流流向相同，这种冲洗模式不能深度去除滤膜表面的污染物，冲洗效果一般，使得滤膜难以长时间的维持良好的透过性，并且冲洗过程耗水量较大，不利于节水。
有鉴于此特提出本发明。
发明内容
本发明的一个目的在于克服现有技术的不足，提供一种能够以相反于滤水方向向净水模块供水以清洗净水模块的洗衣机净水系统。
本发明的另一目的在于提供一种安装有上述净水系统的洗衣机。
为了实现第一发明目的，本发明采用如下技术方案：
一种洗衣机净水系统，包括，
净水模块，通过管路与洗衣机本体连接，洗衣机内的水经净水模块过滤后返回至洗衣机内；
驱动净水模块内的水返回至洗衣机内的第一水泵；
所述净水模块至少具有入水口和出水口，所述入水口通过第一管路与洗衣机排水口连接，所述出水口通过第二管路与洗衣机进水口连接，所述第一水泵设置在第二管路上，第一水泵还与冲洗水供水管连接，以驱动冲洗水供水管内的水从净水入口进入净水模块，对净水模块进行反向冲洗。
进一步，所述冲洗水供水管连接在第二管路上，且位于第一水泵进水口的上游；第一水泵出水口的下游连接有分支管路，所述分支管路连接至第二管路上，且位于第二管路与冲洗水供水管连接处的上游。
进一步，所述第二管路的一端与出水口连接，然后依次经过第一三通阀、第二三通阀、第一水泵、第三三通阀后，另一端与洗衣机进水口连接，所述冲洗水供水管与第二三通阀连接，所述分支管路一端与第一三通阀连接，另一端与第三三通阀连接。
进一步，所述出水口通过出水口管与第一三通阀连接，第一三通阀通过中间连接管与第二三通阀连接，第二三通阀通过水泵进水管与第一水泵进水口连接，水泵出水口通过水泵出水管与第三三通阀连接，第三三通阀通过净水回流管与洗衣机进水口连接。
进一步，所述净水模块包括壳体和设置在壳体内的过滤膜，所述入水口与出水口通过过滤膜分隔，过滤膜的内侧围成与出水口连通的内侧通道，过滤膜的外侧与壳体之间构成与入水口连通的外侧通道。
进一步，所述净水模块还具有溢流口，所述溢流口与外侧通道连通，并在外部连接有溢流管，所述溢流管通过第四三通阀分别与洗衣机回水管和排污管连接，所述洗衣机回水管与洗衣机的进水口或回流口连接，以将溢流口流出的水排入至洗衣机内，所述排污管与外部环境连通，以将溢流口流出的水排入外部环境中，第四三通阀用于控制切换溢流管与洗衣机回水管或排污管连通。
进一步，所述净水模块还具有进气口，所述进气口与外侧通道连通，并在外部连接有一供气装置，所述供气装置用于向净水模块内供气，以使气流冲击过滤膜，使过滤膜振动。
进一步，所述第一管路上还设有第二水泵，第二水泵配置为驱动洗衣机内的水向净水模块内流动。
进一步，所述冲洗水供水管通过第五三通阀与自来水管连接，第五三通阀还与洗衣机的进水管连接。
本发明所述的洗衣机具有上述洗衣机净水系统。
采用本发明所述的技术方案后，带来以下有益效果：
本发明具有对净水模块进行反向冲洗的水路，用自来水对过滤膜进行由内而外的冲洗，并且，更优地，在冲洗的同时用供气装置对过滤膜进行曝气，从而更加的有效去除 附在过滤膜表面的污染物，提高了过滤膜的过滤性能，延长了过滤膜的使用寿命。另一方面，本发明利用第一水泵作为动力，既能驱动净水模块内的水向洗衣机内流动，又能驱动自来水管内的水向净水模块内流动，提高了冲洗水的冲击力，有利于对过滤膜的冲洗。
附图说明
图1：本发明的洗衣机净水系统的连接原理图；
图2：本发明的净水模块在滤水时的工作原理图；
图3：本发明的净水模块在反冲洗时的工作原理图；
其中：1、洗衣机 2、自来水管 3、净水模块 4、第一管路 5、第二管路 6、第一水泵 7、第二水泵 8、冲洗水供水管 9、电磁阀 10、洗衣机回水管 11、排污管 12、供气装置 13、出水口管 14、中间连接管 15、水泵进水管 16、水泵出水管 17、净水回流管 18、分支管路 19、壳体 20、过滤膜 21、第一三通阀 22、第二三通阀 23、第三三通阀 24、第四三通阀 25、第五三通阀 26、溢流管 27、洗衣机进水管 311、入水口 312、出水口 313、溢流口 314、进气口。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步详细的描述。
如图1至图3所示，一种洗衣机净水系统，包括，净水模块3，连接洗衣机1本体与净水模块3的管路和设置在管路上的水泵；所述净水模块3具有入水口311、出水口312，溢流口313和进气口314。所述入水口311位于净水模块3的底部，并通过第一管路4与洗衣机1排水口连接，所述出水口312设置在净水模块3的顶部，并通过第二管路5与洗衣机1进水口连接，所述水泵包括，设置在第二管路5上的第一水泵6，设置在第一管路4上的第二水泵7；第一水泵6用于驱动净水模块3内的水返回至洗衣机1内，具体为，返回至洗衣机盛水桶，第二水泵7用于驱动洗衣机1内的水向净水模块3内流动。
所述第一水泵6还与冲洗水供水管8连接，冲洗水供水管8与自来水管2连接或者与其他提供清洁水的供水装置连接，第一水泵6还用于驱动冲洗水供水管8内的水从净水入口进入净水模块3，以对净水模块3进行反向冲洗。
所述净水模块3包括壳体19和设置在壳体19内的过滤膜20，所述入水口311与出水口312通过过滤膜20分隔，过滤膜20的内侧围成与出水口312连通的内侧通道，过滤膜20的外侧与壳体19之间构成与入水口311连通的外侧通道，从洗衣机1排出的洗涤水由入水口311进入净水模块3内，水分子穿过过滤膜20进入内侧通道，脏物和洗涤剂被过滤膜20隔挡在外侧通道，经过滤后的水由出水口312排出并返回至洗衣机1内。
优选地，所述冲洗水供水管8连接在第二管路5上，且位于第一水泵6进水口的上游；第一水泵6出水口的下游连接有分支管路18，所述分支管路18连接至第二管路5上，且位于第二管路5与冲洗水供水管8连接处的上游，冲洗水由冲洗水供水管8进入第二管路5，在第二管路5内向第一水泵6流动，在第一水泵6的驱动下，沿分支管路18返回至第二管路5的上游，并沿第二管路5返回至净水模块3，对净水模块3进行冲洗。
具体地，所述第二管路5包括，出水口管13、第一三通阀21、中间连接管14、第二三通阀22、第三三通阀23、水泵进水管15、水泵出水管16和净水回流管17。所述出水口312通过出水口管13与第一三通阀21连接，第一三通阀21通过中间连接管14与第二三通阀22连接，所述第二三通阀22通过水泵进水管15与第一水泵6进水口连接，水泵出水口通过水泵出水管16与第三三通阀23连接，第三三通阀23通过净水回流管17与洗衣机1进水口连接。
所述第二三通阀22还与冲洗水供水管8连接，用于引入冲洗水，所述第一三通阀21与第三三通阀23之间还通过分支管路18连接，用于将冲洗水引入净水模块3。
所述溢流口313位于净水模块3的上端一侧，溢流口313与外侧通道连通，并在外部连接有溢流管26，所述溢流管26通过第四三通阀24分别与洗衣机回水管10和排污管11连接，所述洗衣机回水管10与洗衣机1的进水口或回流口连接，以将溢流口313流出的水排入至洗衣机1内，所述排污管11与外部环境连通，以将溢流口313流出的水排入外部环境中，第四三通阀24用于控制切换溢流管26与洗衣机回水管10或排污管11连通，在净水模块3净水时，溢流管26与洗衣机回水管10连通，在净水模块3反冲洗时，溢流管26与排污管11连通。
所述进气口314位于净水模块3的下端一侧，进气口314与外侧通道连通，并在外部连接有一供气装置12，优选地，所述供气装置12为气泵，所述供气装置12用于向净 水模块3内供气，以使气流冲击过滤膜20，使过滤膜20振动，在净水模块3反冲洗时，供气装置12运行，使净水模块3内产生气泡，对过滤膜20产生冲击作用。
优选地，所述冲洗水供水管8和洗衣机进水管27共同通过第五三通阀25与自来水管2连接，在洗衣机1进水时，第五三通阀25控制自来水管2与洗衣机进水管27连通，在反冲洗时，第五三通阀25控制自来水管2与冲洗水供水管8连通。
优选地，在冲洗水供水管8、洗衣机进水管27、溢流管26、洗衣机回水管10、排污管11上分别设有控制管路通断的电磁阀9。
本发明的洗衣机净水系统的工作过程为：
洗衣机1进水时，洗衣机进水管27上的电磁阀9打开，自来水进入洗衣机1内，待水位达到系统设定值后，洗衣机进水管27上的电磁阀9关闭。待洗涤结束后，将洗涤水排掉，然后进入漂洗状态。
进入漂洗状态时，洗衣机进水管27上的电磁阀9再次打开，待水位达到设定值后，该电磁阀9关闭，开始漂洗，此时，净水模块开始运行。
结合图2所示，图中箭头代表水流方向，净水模块3过滤步骤如下：
首先，第一三通阀21连通出水口管13与中间连接管14，第二三通阀22接通中间连接管14与水泵进水管15，第三三通阀23连通水泵出水管16与净水回流管17，溢流管26上的电磁阀9打开，洗衣机回水管10上的电磁阀9打开，然后第二水泵7启动，向净水模块3内泵水，稍后第一水泵6启动，洗涤水在压力作用下从过滤膜20外侧进入过滤膜20内侧，经过净水模块3过滤后的水回到洗衣机1内，同时从净水模块3溢流口313流出的水也回到洗衣机1内。优选地，第二水泵7的流量大于第一水泵6的流量，使得部分洗涤水从净水模块3的溢流口313流出。
在漂洗快要结束时，第二水泵7首先停止运行，第一水泵6将净水模块3中剩余的水抽到洗衣机1内，然后结束漂洗，之后，进入净水模块3冲洗阶段。
结合图3所示，图中箭头代表水流方向，净水模块3冲洗步骤如下：
首先，冲洗水供水管8上的电磁阀9打开，第二三通阀22连通冲洗水供水管8与水泵进水管15，第三三通阀23连通水泵出水管16与分支水管，第一三通阀21连通分支水管与出水口管13，溢流管26上的电磁阀9打开，排污管11上的电磁阀9打开，气泵启动，第一水泵6启动，进入反冲洗状态，在反冲洗状态下，冲洗水在压力作用下从 过滤膜20内侧进入过滤膜20外侧，反冲洗时间根据实际运行状况可以来设定。
反冲洗结束后，第一水泵6停止运行，气泵停止运行，冲洗水供水管8上的电磁阀9关闭，溢流管26上的电磁阀9、排污管11上的电磁阀9关闭，所有三通阀切换到初始状态，反冲洗维护完成。
本发明还涉及一种安装有上述洗衣机净水系统的洗衣机。
以上所述为本发明的实施方式，应当指出，对于本领域的普通技术人员而言，在不脱离本发明原理前提下，还可以做出多种变形和改进，这也应该视为本发明的保护范围。

Claims (10)

  1. 一种洗衣机净水系统，其特征在于，包括，
    净水模块，通过管路与洗衣机本体连接，洗衣机内的水经净水模块过滤后返回至洗衣机内；
    驱动净水模块内的水返回至洗衣机内的第一水泵；
    所述净水模块至少具有入水口和出水口，所述入水口通过第一管路与洗衣机排水口连接，所述出水口通过第二管路与洗衣机进水口连接，所述第一水泵设置在第二管路上，第一水泵还与冲洗水供水管连接，以驱动冲洗水供水管内的水从净水入口进入净水模块，对净水模块进行反向冲洗。
  2. 根据权利要求1所述的一种洗衣机净水系统，其特征在于：所述冲洗水供水管连接在第二管路上，且位于第一水泵进水口的上游；第一水泵出水口的下游连接有分支管路，所述分支管路连接至第二管路上，且位于第二管路与冲洗水供水管连接处的上游。
  3. 根据权利要求2所述的一种洗衣机净水系统，其特征在于：所述第二管路的一端与出水口连接，然后依次经过第一三通阀、第二三通阀、第一水泵、第三三通阀后，另一端与洗衣机进水口连接，所述冲洗水供水管与第二三通阀连接，所述分支管路一端与第一三通阀连接，另一端与第三三通阀连接。
  4. 根据权利要求3所述的一种洗衣机净水系统，其特征在于：所述出水口通过出水口管与第一三通阀连接，第一三通阀通过中间连接管与第二三通阀连接，第二三通阀通过水泵进水管与第一水泵进水口连接，水泵出水口通过水泵出水管与第三三通阀连接，第三三通阀通过净水回流管与洗衣机进水口连接。
  5. 根据权利要求1所述的一种洗衣机净水系统，其特征在于：所述净水模块包括壳体和设置在壳体内的过滤膜，所述入水口与出水口通过过滤膜分隔，过滤膜的内侧围成与出水口连通的内侧通道，过滤膜的外侧与壳体之间构成与入水口连通的外侧通道。
  6. 根据权利要求5所述的一种洗衣机净水系统，其特征在于：所述净水模块还具有溢流口，所述溢流口与外侧通道连通，并在外部连接有溢流管，所述溢流管通过第四三通阀分别与洗衣机回水管和排污管连接，所述洗衣机回水管与洗衣机的进水口或回流口连接，以将溢流口流出的水排入至洗衣机内，所述排污管与外部环境连通，以将溢流口流出的水排入外部环境中，第四三通阀用于控制切换溢流管与洗衣机回水管或排污管 连通。
  7. 根据权利要求5所述的一种洗衣机净水系统，其特征在于：所述净水模块还具有进气口，所述进气口与外侧通道连通，并在外部连接有一供气装置，所述供气装置用于向净水模块内供气，以使气流冲击过滤膜，使过滤膜振动。
  8. 根据权利要求1所述的一种洗衣机净水系统，其特征在于：所述第一管路上还设有第二水泵，第二水泵配置为驱动洗衣机内的水向净水模块内流动。
  9. 根据权利要求1所述的一种洗衣机净水系统，其特征在于：所述冲洗水供水管通过第五三通阀与自来水管连接，第五三通阀还与洗衣机的进水管连接。
  10. 一种洗衣机，其特征在于：安装有如权利要求1-9任一所述的洗衣机净水系统。
PCT/CN2018/094651 2017-07-27 2018-07-05 一种洗衣机净水系统及洗衣机 WO2019019892A1 (zh)

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