WO2014206312A1

WO2014206312A1 - Clothes-washing machine and clothes-washing control method

Info

Publication number: WO2014206312A1
Application number: PCT/CN2014/080835
Authority: WO
Inventors: 郝世龙; 李光辉; 李以民; 劳春峰; 许升; 彭秀文
Original assignee: 海尔集团技术研发中心; 海尔集团公司
Priority date: 2013-06-28
Filing date: 2014-06-26
Publication date: 2014-12-31
Also published as: CN104294549B; CN104294549A

Abstract

A clothes-washing machine and a clothes-washing control method, including providing a coarse filtration assembly (12) and a fine filtration assembly (14) on a water circulation pipeline which communicates with a washing drum (21) of a clothes-washing machine, said coarse filtration assembly (12) and fine filtration assembly (14) also being respectively connected to a gas conveyance device (11). The present technology optimizes the layout and structure of a clothes-washing machine while simultaneously improving the efficiency of recycled water purification and achieving the automatic cleaning of a filtration device.

Description

Washing machine and laundry control method

The present invention relates to laundry technology, and more particularly to a washing machine and laundry control method. Background technique

The traditional washing machine, regardless of the pulsator type or the drum type, the semi-automatic or the fully automatic washing machine, directly discharges the washing wastewater, and uses a large amount of fresh water for multiple rinsing, which consumes a large amount of water, and is extremely wasteful to the use of water resources. In this regard, the following solutions are adopted in the prior art:

1. Increase the water storage tank, collect the rinsing water, filter the filter and apply it to the next washing. This method simply removes the swarf and adds the water tank to store the rinsing water. The effluent is rich in impurities and the water quality is unstable, although it can be rinsed. The water is purified for recycling, but the water quality problem of the rinse water is not fundamentally solved, and the structure cost of the washing machine is increased, which occupies a large layout space.

2. Use a reverse osmosis filter to purify the wastewater. This method requires the use of a high-pressure pump. The rate of purification of the water is slow, the amount of water cannot guarantee the use of the washing machine, and the cost is high.

3. Use large water treatment equipment, ozone generator, electrolysis and other ancillary equipment to purify and use the washing water. This method takes up a large layout space and the water treatment cost is high.

4. The wave turbine adopts the wire collection filter bag to manually clean the wire waste; the roller machine adopts the drain pump pump head to intercept the large line head and the washing water is discharged. This method has a poor filtering effect and basically does not trap the wire.

Therefore, how to improve the purification efficiency of the recovered water while optimizing the layout of the washing machine and to achieve automatic cleaning of the filtering device is a problem that has been considered by those skilled in the art. Summary of the invention

A brief summary of the invention is set forth below in order to provide a basic understanding of certain aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical aspects of the invention, and is not intended to limit the scope of the invention. Its purpose is to present some concepts in a simplified form as a pre-

The invention provides a washing machine and a laundry control method, which can improve the recovery structure of the washing machine and improve the purification efficiency of the recovered water, and realize the automatic cleaning of the filtering device.

In one aspect, the invention also provides a washing machine on a water circulation line that communicates with the washing tub A coarse filter assembly and a fine filter assembly are provided, the coarse filter assembly and the fine filter assembly also being coupled to a gas delivery device, respectively.

In another aspect, the present invention provides a laundry control method comprising:

Circulating and filtering the discharge water of the washing tub through the coarse filter assembly and the ultrafiltration membrane module;

The gas is delivered to the coarse filter assembly and/or the fine filter assembly by a gas delivery device.

In the technical solution provided by the invention, the coarse filter assembly can be used for filtering the wire and larger particles, and the ultrafiltration membrane module can be used for filtering smaller particles, soluble dirt and the like, thereby improving the efficiency of water purification. Structurally, there is no need to add a water tank, a large water treatment equipment, etc., and the gas filtering device can separately perform air washing on the coarse filtering device and the fine filtering component, so that loosely adhered or trapped in the coarse filtering component or under the action of the airflow. The wire scraping on the fine filter assembly eliminates the need to separately provide an air washing device for the two filtering devices, optimizes the layout space of the washing machine, makes the washing machine more compact, and realizes automatic cleaning of the filtering device without manual processing. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic structural view of a washing machine according to a first embodiment of the present invention;

2 is a flow chart of a laundry control method according to Embodiment 2 of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. The elements and features described in one of the figures or one embodiment of the invention may be combined with elements and features illustrated in one or more other figures or embodiments. It should be noted that, for the sake of clarity, representations and descriptions of components and processes that are not known to those of ordinary skill in the art are omitted in the drawings and the description. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the invention.

Embodiment 1 FIG. 1 is a structural diagram of a washing machine according to a first embodiment of the present invention. As shown in FIG. 1, the washing machine includes a washing tub 21 and a drain port 22. The washing tub 21 is provided with a clean water inlet, and the tap water is connected through the pipe a. When the valve 1 on the pipe a is opened, the washing water or the rinsing water can be introduced into the washing tub 21.

The washing machine further includes a water circulation line communicating with the washing tub 21, the water circulation line being provided with a coarse filter assembly 12 and a fine filter assembly 14, and the coarse filter assembly 12 and the fine filter assembly 14 are also connected to the gas delivery device 11, respectively.

The coarse filter assembly 12 and the fine filter assembly 14 are used to filter the drain water of the wash basket 21, the coarse filter assembly 12 can be used to filter the strands and larger particles, and the fine filter assembly 14 can be used to filter smaller particles, soluble dirt, etc. The fine filter assembly 14 can be, for example, an ultrafiltration membrane module. Therefore, the present invention does not require the addition of a water tank, a large-scale water treatment facility, etc., and can also improve the purification efficiency of the recovered water.

The gas delivery device 11 can be, for example, an air pump that can deliver gas to the coarse filter assembly 12 or the fine filter assembly for loosening the lint, particles, etc. that adhere or trap on the coarse filter assembly 12 or the fine filter assembly 14. There is no need to separately set the air washing device for the two filtering devices, the layout space of the washing machine is optimized, the washing machine is further miniaturized, and the automatic cleaning of the filtering device is realized without manual processing.

The coarse filter assembly 12 is used as a pre-filter device, and the water inlet thereof communicates with the drain port of the washing tub, and the water outlet of the fine filter assembly 14 communicates with the water inlet of the washing tub 21. The discharged water of the washing tub 21 is sequentially processed by the coarse filter assembly 12 and the ultrafiltration membrane module 14 and then returned to the washing tub 21.

For example, the line b, the water pump 4, the line c, the three-way valve 6, the line e, the line f, the three-way valve 7 and the line g in Fig. 1 are connected to form a water circulation line of the washing tub 21, wherein the tube The path b communicates with the drain port of the washing tub 21, and the line g communicates with the water inlet of the washing tub 21. The coarse filter assembly 12 is connected between the line c and the three-way valve 6, and the fine filter assembly 14 is connected between the lines e, f.

In the washing or rinsing process in the washing process, the coarse filter assembly 12 and the pipe e are connected by controlling the three-way valve 6, and the pipe f and the pipe g are connected by controlling the three-way valve 7, and the washing water or the rinsing water can be The crude filter assembly 12 is passed through the lines b, c for coarse filtration, and then passed through the line e to the fine filter assembly 14 for fine filtration, and then recovered to the washing tub 21 via the lines f, g for reuse as laundry or rinsing.

A valve is disposed on the pipeline between the coarse filter assembly 12 and the gas delivery device 11, and a valve is disposed on the pipeline between the fine filter assembly and the gas delivery device. As shown in Figure 1, the line h communicates with the gas delivery device 11 and the coarse filter assembly 12, and the line i communicates with the gas delivery device 11 and the fine filter assembly. 14, a check valve 13 is arranged on the pipe h, and a check valve 10 is arranged on the pipe j. When the gas delivery device 11 and the check valve 13 are opened, the gas delivery device 11 purifies the coarse filter assembly 12. When the gas delivery device 11 and the check valve 10 are opened, the gas delivery device 11 purifies the fine filter assembly 14. By controlling the above valves, it is possible to select both time-sharing or simultaneous air-washing of the two filter assemblies.

Optionally, the fine filter assembly 14 is provided with a pressure sensor 8 for detecting the pressure of the fine filter assembly, and the controller of the washing machine can determine whether the detected pressure reaches a preset threshold. If yes, the fine filter assembly 14 is intercepted. If there are many dirt such as chips and particles, the circulating water of the washing and washing tub is stopped, and the gas conveying device 11 and the check valve 10 are opened to perform air washing on the fine filter assembly; otherwise, the discharged water of the washing tub can be continuously performed. Loop filtering.

Optionally, the washing machine of the embodiment of the present invention further includes a first cleaning drain line for discharging the drain water of the washing tub flowing through the coarse filter assembly 12 to the washing machine. For example, the line d in Fig. 1 connects the coarse filter assembly 12 and the drain port 22 of the washing machine to form a first cleaning drain line, and the line d is provided with a valve 3. After the circulation filtration is completed, the control three-way valve 6 is closed, the valve 3 is opened, the discharge water of the washing tub 21 is washed to the coarse filter assembly 12, and then the washing machine is discharged through the pipeline d, thereby realizing the coarse filtration by the discharge water of the washing tub. The component 12 is washed with water.

Optionally, the washing machine of the embodiment of the present invention further includes a second cleaning drain line for discharging the drain water flowing through the washing tub of the fine filter assembly 14 to the washing machine. For example, the lines 1, k in Fig. 1 are connected to form a second cleaning drain line, wherein the line i is connected to the fine filter assembly 14, the line k is connected to the drain port 22 of the washing machine, and the line i is provided with a valve 5. After the circulation filtration is completed, the coarse filter assembly 12 and the pipe e are connected by controlling the three-way valve 6, and the three-way valve 7 is closed and the valve 5 is opened, so that the discharge water of the washing tub 21 is filtered by the coarse filter assembly 12 and then enters the fine The filter assembly 14 washes the fine filter assembly 14 and then discharges the drain port 22 of the washing machine via the lines i, k, thereby enabling the fine filter assembly 14 to be washed with the drain water of the wash tub.

The above water washing of the two filter components can be completed after the air washing, that is, the impurities are removed by the air flow or adhered to the ultrafiltration membrane module 14 or the coarse filter assembly 12, and then washed with water, and the impurities are more easily washed by water. Go, enhance the cleaning effect. Of course, when cleaning the coarse filter unit or the fine filter unit, it can be performed simultaneously with air washing and water washing.

Therefore, the present invention further achieves water washing of the two filter assemblies, prolongs the life of the filter assembly, and achieves self-cleaning of the filter assembly without manual cleaning, thereby making the washing machine more automated.

The washing machine of this embodiment further includes a reverse washing line connected to a portion of the water circulation line near the water inlet of the washing tub through a three-way valve for entering the clean water into the fine filter assembly. For example, figure In the pipe L of 1, one end is connected to the water tap, and the other end is connected to the pipes g and f through the three-way valve 7. The clean water can be washed into the fine filter assembly 14 via the line L, the three-way valve 7 and the line f to wash the fine filter assembly 14 and, after the reverse cleaning, the water can be discharged through the lines i, k. In other embodiments, after the reverse cleaning, the three-way valve 6 can also be controlled to connect the line e with the coarse filter assembly 12, and the check valve 3 is opened to allow the washing water to pass through the line e, the coarse filter assembly 12 and the tube. The road d discharges the washing machine.

By setting the reverse cleaning line, the fine filter assembly can be reversely cleaned to further remove impurities trapped in the fine filter assembly, ensuring cleaning and maintenance of the over-fine filter assembly and prolonging its service life.

Further, in the washing or rinsing process, when it is necessary to discharge the washing water or the rinsing water in the washing tub 21 out of the washing machine, the three-way valve 6 can be controlled to be closed, and the valve 3 is opened, so that the washing water is sequentially filtered through the pipes b, c, and coarse. Assembly 12 and line d exit the washing machine.

Specifically, it is determined whether the washing water or the rinsing water is discharged from the washing machine or recycled according to the turbidity of the water in the washing tub 21. The washing machine of this embodiment further includes a turbidity sensor 2 disposed in the washing tub 21. The turbidity sensor 2 is for detecting whether the turbidity of the washing water or the rinsing water of the washing tub reaches a preset threshold. For example, in the washing process, if the turbidity of the washing water does not reach the preset threshold, the washing water is filtered to enter the washing cycle stage; if the washing water is detected to reach the preset threshold, the washing water is controlled to exit the washing machine and enter the rinsing process.

In the rinsing process, after the rinsing is performed, it is detected that the turbidity of the rinsing water reaches a preset threshold, and then the rinsing water is controlled to discharge the washing machine. Otherwise, the three-way valve 6 is controlled to connect the pipe e and the coarse filter assembly 12, and the three-way valve is controlled. 7 Connect the pipes f, g, and perform a cyclic filtration rinse.

By setting the turbidity sensor, it is possible to automatically determine whether or not drainage is required according to the turbidity of the washing water or the rinsing water, and also automatically determine whether or not to enter the water filtration cycle process, thereby improving the intelligence of the washing machine.

In this embodiment, the washing water or the rinsing water discharged from the washing tub can also be recovered by spraying. Specifically, a shower nozzle 15 that communicates with the washing tub 21 and the coarse filter assembly 12 may be provided in the washing machine, and the drain water of the washing tub 21 is filtered by the coarse filter assembly 12, and then sprayed back to the washing tub 21 through the shower nozzle 15. For example, by controlling the three-way valve 6, the coarse filter assembly 12 can be prevented from communicating with the fine filter assembly 14, and in communication with the spray nozzle 15, the spray nozzle 15 can discharge the coarse filtered wash basket 21 out of the water. In the washing tub 21 . The washing or rinsing water is recovered by spraying, and the spray water can penetrate into the clothes more uniformly, thereby improving the washing rate. Embodiment 2

2 is a flowchart of a laundry control method according to Embodiment 2 of the present invention. Taking a circulating rinse water as an example, the method includes:

Step S22: circulating and filtering the discharge water of the washing tub through the coarse filter component and the fine filter component (for example, an ultrafiltration membrane module);

Step S24: Delivering gas to the coarse filter component and/or the fine filter component.

Steps S22 and S24 may be performed in a rinsing process of the laundry. Step S22 may specifically include, for example, controlling the three-way valve 6 to connect the coarse filter assembly 12 with the fine filter assembly 14, and controlling the three-way valve 7 to make the fine filter assembly 14 and the washing tub. 21 is connected, and the water pump 4 is started to cause the rinsing water to be sequentially filtered through the coarse filter assembly 12 and the fine filter assembly 14 and then recovered to the washing tub 21. Step S24 may specifically include: closing the three-way valve 6, opening the one-way valve 10 and/or 13, opening the valve 3 and/or 5, opening the gas delivery device 11, and causing the gas generated by the gas delivery device 11 to be delivered to the coarse filter assembly 12 And/or the fine filter assembly 14, wherein the line h, the line d form a gas wash circuit of the coarse filter assembly 12, and the line j, the line i, k form a gas wash circuit of the fine filter assembly 14.

Optionally, before delivering the gas to the fine filter assembly, the method further includes:

Determining whether the pressure received by the fine filter assembly 14 reaches a preset threshold;

If so, the gas is delivered to the fine filter assembly; if not, step S22 is performed to circulate the drain water of the wash basket through the coarse filter assembly and the fine filter assembly.

Optionally, after the gas is delivered to the coarse filter assembly, the method further includes the step S25: controlling the discharge water of the washing tub to clean the coarse filter assembly and then discharging the washing machine. Step S25 specifically includes: opening the valve 3, causing the washing water or the rinsing water to clean the coarse filter assembly 12 and then discharging the washing machine.

Optionally, after the gas is delivered to the fine filter assembly, the method further includes the step S26: controlling the discharge water of the washing tub to flow through the coarse filter assembly and cleaning the fine filter assembly, and then discharging the washing machine. The step may specifically include: controlling the three-way valve 6 The coarse filter assembly 12 is communicated with the fine filter assembly 14 to open the valve 5, allowing the wash water or rinse water to clean the fine filter assembly 14 and exit the washing machine.

Optionally, after delivering the gas to the fine filter assembly, the method further includes:

Step S27: entering the clean water into the fine filter component;

Step S28: Controlling the clean water cleaning filter assembly and discharging the washing machine.

The step S27 may specifically include: closing the three-way valve 6, and controlling the three-way valve 7 to connect the fine filter assembly 14 and the water inlet, so that the tap water enters the fine filter assembly 14 to clean it. Step S28 may specifically include: opening the valve 5, allowing the tap water to clean the fine filter assembly 14 and then draining through the second cleaning The pipeline discharges the washing machine; or, the valve 5 is closed, the three-way valve 6 is controlled to connect the fine filter assembly and the coarse filter assembly, and the valve 3 is opened, so that the tap water cleans the fine filter assembly 14 and then passes through the pipeline e, the coarse filter assembly 12 and the tube. The road d discharges the washing machine.

Alternatively, while the gas is being supplied to the coarse filter assembly 12 and/or the fine filter assembly 14, the discharge water of the wash tub may be controlled to clean the coarse filter assembly or the fine filter assembly and then discharged out of the washing machine.

Optionally, before step S22, the method further includes:

Step S20: detecting whether the turbidity value of the discharged water of the washing tub reaches a preset threshold;

If so, step S21 is executed to control the discharge water of the washing tub to flow out of the washing machine through the coarse filter assembly, for example, to close the three-way valve 6, and open the valve 3.

If not, step S22 is performed to circulate the discharge water of the washing tub through the coarse filter assembly and the fine filter assembly. In the rinsing process, if it is detected that the turbidity value of the rinsing water reaches a preset threshold, it is discharged to the washing machine. Otherwise, the rinsing water is controlled to be sequentially filtered through the coarse filter assembly and the fine filter assembly, and then returned to the washing tub.

For convenience of description, the process of performing the step S22 of circulating and filtering the discharge water of the washing tub through the coarse filter assembly and the fine filter assembly in step S20 is collectively referred to as a filter reflux step.

Optionally, the laundry control method of this embodiment may further include the following steps:

The discharged water of the washing tub filtered through the coarse filter unit is sprayed back into the washing tub (also referred to as a spray circulation step). The spray circulation step may specifically include: controlling the three-way valve 6 to connect the coarse filter assembly and the spray nozzle 15 , and turning on the water pump 4 to drain the rinse water discharged from the wash tub to the spray nozzle 15 and then spray to wash Cartridge 21. In the rinsing process, the shower rinsing step or the filtering reflux step may be selectively performed as needed to achieve the cycle rinsing. Specifically, the filtration reflux step may be performed when it is judged that the turbidity of the rinse water of the washing tub has not reached the preset threshold.

In other embodiments, it is also possible to detect only the wash water and control the wash filtered water cycle. For example, in step S20, if it is detected that the turbidity of the washing water exceeds a preset threshold, the washing water is discharged out of the washing machine, and the rinsing process is started, otherwise, the washing water is circulated and filtered by the coarse filter assembly and the fine filter assembly, so that the washing is performed. The water is filtered through the coarse filtration unit and the fine filtration unit in sequence, and then returned to the washing tub.

It is also possible to perform step S25 and step S26 after the end of the circulating washing, i.e., washing the coarse filter assembly and the ultrafiltration membrane module with the washing water discharged from the washing tub.

In the washing step, a shower cycle step or a filter reflux step may also be selectively performed to effect the cycle washing. The above laundry control method can not only improve the efficiency of water purification. And automatic cleaning of the filtering device is realized without manual processing.

In the above embodiments of the present invention, the serial numbers and/or the sequence of the embodiments are merely for convenience of description, and do not represent the advantages and disadvantages of the embodiments. The descriptions of the various embodiments are all focused on, and the details are not described in detail in a certain embodiment. See the related description of other embodiments.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to the program instructions. The foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing storage medium includes: a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. The medium of the program code.

In the embodiments of the apparatus and method of the present invention, it is apparent that the various components or steps may be decomposed, combined, and/or decomposed and recombined. These decompositions and/or recombinations should be considered as equivalents to the invention. Also, in the above description of the specific embodiments of the present invention, features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, and in other embodiments. The features are combined or substituted for features in other embodiments.

It should be emphasized that the term "comprising" or "comprises" or "comprising" or "comprising" or "comprising" or "comprising" or "comprising" or "comprises"

It should be noted that, although the invention and its advantages are described in detail, it is understood that various changes and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. And transformation. Further, the scope of the invention is not limited to the specific embodiments of the processes, apparatus, means, methods and steps described in the specification. It will be readily apparent to those skilled in the art from this disclosure that the present invention can be used in accordance with the present invention to perform substantially the same functions as the corresponding embodiments described herein or to obtain substantially the same results as the present and future The process, equipment, means, method or step being developed. Therefore, the appended claims are intended to cover such a process, apparatus, means, methods or steps.

Claims

Rights request

1. A washing machine, wherein

A coarse filter assembly and a fine filter assembly are provided on the water circulation pipeline connected to the washing drum, and the coarse filter assembly and fine filter assembly are also respectively connected to the gas delivery device.

2. The washing machine according to claim 1, wherein

The water inlet of the rough filter assembly is connected to the drain outlet of the washing tub, and the water outlet of the fine filter assembly is connected to the water inlet of the washing tub.

3. The washing machine according to claim 1, further comprising:

The first cleaning drainage pipe is used to discharge the discharge water flowing through the washing tub of the coarse filter assembly out of the washing machine.

4. The washing machine according to claim 1, further comprising:

The second cleaning drainage pipe is used to discharge the discharge water flowing through the washing tub of the fine filter assembly out of the washing machine.

5. The washing machine according to claim 1, further comprising:

The second cleaning drainage pipe is used to discharge the water that flows through the fine filter assembly for cleaning out of the washing machine.

6. The washing machine according to claim 4 or 5, further comprising:

The reverse cleaning pipeline is used to enter clean water into the fine filter assembly. The clean water cleans the fine filter assembly and then is discharged from the washing machine through the second cleaning drainage pipe.

7. The washing machine according to claim 1, wherein

A valve is provided on the pipeline between the rough filter assembly and the gas delivery device, and a valve is provided on the pipeline between the fine filter assembly and the gas delivery device.

8. The washing machine according to claim 1, further comprising:

The spray nozzle is connected to the washing drum and the coarse filter assembly, and the discharge water from the washing drum passes through the coarse filter assembly. After filtering by the filter component, it is sprayed back to the washing tub through the spray nozzle.

9. A laundry control method, including:

The discharge water from the washing drum is circulated and filtered through the coarse filter component and the fine filter component;

Deliver gas to the rough filter assembly and/or fine filter assembly through a gas delivery device

10. The laundry control method according to claim 9, wherein

The discharged water from the washing tub is filtered by the rough filter assembly and the fine filter assembly in sequence and then recycled into the washing tub.

11. The laundry control method according to claim 9, after delivering gas to the coarse filter component, the method further includes:

The discharge water from the washing tub is controlled to clean the coarse filter assembly and then be discharged from the washing machine.

12. The laundry control method according to claim 9, after delivering gas to the fine filter component, the method further includes:

Control the discharge water from the washing tub to flow through the coarse filter assembly and clean the fine filter assembly before being discharged from the washing machine.

13. The laundry control method according to claim 9, after delivering gas to the fine filter component, the method further includes:

Enter clean water into the fine filter component;

Control the clean water to clean the fine filter assembly and then discharge it from the washing machine.

14. The laundry control method according to claim 9, wherein

While delivering gas to the coarse filter component and/or the fine filter component, the discharge water from the washing tub is controlled to clean the coarse filter component or the fine filter component and then be discharged from the washing machine.