CN215251807U

CN215251807U - Washing machine

Info

Publication number: CN215251807U
Application number: CN202120232737.1U
Authority: CN
Inventors: 胡晓伟; 陶唯佳
Original assignee: Shenzhen Entropy Road Technology Co ltd
Current assignee: Shenzhen Entropy Road Technology Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-12-21
Anticipated expiration: 2031-01-27

Abstract

The application discloses washing machine, including washing bucket, power pump, first pipeline, second pipeline, rough filter equipment and ultrafiltration device. The outlet of the coarse filter is communicated with the inlet of the ultrafiltration device. The rough filtering device performs preliminary filtering on the washing water, and the ultrafiltration device purifies the washing water subjected to the preliminary filtering. The first pipeline is communicated with the washing barrel, the power pump, the coarse filtering device and the ultrafiltration device to form a first water flow passage capable of recycling the washing water. The second pipeline is communicated with the outlet of the power pump and the outlet of the ultrafiltration device to form a second water flow path for back flushing the ultrafiltration device. Since the first and second flow paths are in opposite directions within the ultrafiltration device. Impurities attached to the inside of the ultrafiltration device can be flushed away in time by the washing water circulating in the second pipeline when the washing water circulates in the first pipeline, and vice versa. Therefore, the phenomenon that the ultrafiltration device is blocked due to the deposition of impurities in the washing water in the ultrafiltration device can be effectively prevented.

Description

Washing machine

Technical Field

The application relates to the technical field of washing machines, in particular to a washing machine with a water circulation filtering function.

Background

With the improvement of living standard of people, the washing machine has become one of the necessary household appliances in the home of people. The working process of the washing machine mainly comprises washing, rinsing, spin-drying and other stages. The traditional washing machine directly causes a large amount of water resources to be wasted because the water in the washing machine is directly discharged outside after each working stage is finished. According to statistics, the water consumption of the washing machine accounts for about 30% -50% of the water consumption of the household, and the water consumption of the washing machine per month is more than 1 ton per household on average. The quantity of the existing washing machines in China is more than 2.5 hundred million, and the water resource wasted by washing clothes every month by nationwide families is huge.

Therefore, the water-saving washing machine capable of circularly filtering and recycling the washing water gradually comes into the visual field of people. Compared with the traditional washing machine, the water-saving washing machine is usually provided with the filtering device in the machine body, the water inlet of the filtering device is connected with the water outlet of the washing machine, and the water outlet of the filtering device is connected with the water inlet of the washing machine. However, the filter device is easy to block the filter holes on the filter element after long-term use, and especially when the filter device is an ultrafiltration device, the filter device will not only reduce the filtration efficiency, but also increase the use cost. Therefore, how to effectively clean the filter element in the filter device and prevent the filter holes from being blocked has become the important research and development point of the water-saving washing machine.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a circulation drainage washing machine to solve the technical problem that a filtering device in the washing machine is easy to block.

The embodiment of the application provides a washing machine, which comprises a washing barrel, a power pump, a first pipeline, a second pipeline, a coarse filtering device and an ultrafiltration device. The outlet of the coarse filtering device is communicated with the inlet of the ultrafiltration device. The rough filtering device is used for preliminarily filtering the washing water, and the ultrafiltration device is used for purifying the washing water subjected to preliminary filtering. The first pipeline communicates the washing tub, the power pump, the coarse filtering device, and the ultrafiltration device to form a first water flow path that can recycle the washing water. The second line communicates the outlet of the power pump and the outlet of the ultrafiltration device to form a second water flow path for back flushing the ultrafiltration device.

In some embodiments, control valves are further provided on the first and second lines for controlling the washing water to alternately circulate in the first and second lines.

In some embodiments, the ultrafiltration device comprises a filtration membrane, wherein a hollow fiber layer is arranged in the filtration membrane, the hollow fiber layer is formed by weaving hollow fibers, and the hollow fibers are filled with natural antibacterial materials or nano materials.

In some embodiments, the ultrafiltration device further comprises a vacuum pump; the vacuum pump is used for increasing the pressure difference between two sides of the filtering membrane.

In some embodiments, the coarse filtration device comprises a first outlet and a second outlet; the first outlet is communicated with the inlet of the ultrafiltration device; the second outlet is used for rapidly discharging the washing water to the outside when the washing water does not need to be filtered.

In some embodiments, the wash water flows through a drain outlet of a wash tub, a strainer device, an ultrafiltration device, a water inlet of a wash tub in sequence within the first line; the washing water sequentially flows through the ultrafiltration device and the rough filtration device in the second pipeline; the first line serves as a purification passage of the washing water; the second line may be used as a water flow path for back flushing the ultrafiltration device.

In some embodiments, the coarse filtration device further comprises a third outlet; the third outlet is communicated with the inlet of the coarse filtering device; the washing water sequentially flows through a coarse filtering device and an ultrafiltration device in the first pipeline; the washing water flows through a third outlet, an outlet of the ultrafiltration device, an inlet of the ultrafiltration device and a water inlet of the washing barrel in sequence in the second pipeline; the first line and the second line are alternately opened to allow the coarse filtering device and/or the ultra-filtering device to purify the washing water.

In some embodiments, the ultrafiltration device comprises a filter element and a power member capable of rotating the filter element.

In some embodiments, the ultrafiltration device is connected to the wash tub and is rotatable with the wash tub.

In some embodiments, the ultrafiltration device is attached to the inner surface of the wash tub and forms a bulge.

The washing machine provided by the application has the advantages that the direction of the first water flow channel is opposite to that of the second water flow channel in the filtering device. Impurities attached to the inside of the filtering device can be washed away by the washing water circulating in the second pipeline in time when the washing water circulates in the first pipeline, and vice versa. Therefore, the phenomenon that the filter device is blocked due to the deposition of impurities in the washing water in the ultrafiltration device can be effectively prevented.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of one embodiment of a washing machine in an embodiment of the present application;

FIG. 2 is a schematic diagram of another embodiment of a washing machine in an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of an ultrafiltration device according to an embodiment of the present application;

fig. 4 is a schematic sectional structure view of a washing tub in an embodiment of the present application.

Reference numerals:

a washing tub 10; a washing tub water inlet 11; a washing tub drain port 12; a power pump 20; a power pump inlet 21; a power pump outlet 22; a first control valve 30; a coarse filtration device 40; a second outlet 41; a coarse filter inlet 42; a first outlet 43; a third outlet 44; a second control valve 50; a third control valve 60; an ultrafiltration device 70; an inlet chamber 71; an inlet chamber inlet 710; a water outlet cavity 72; an outlet 720 of the outlet chamber; a housing 73; a filter element 74; a waste chamber 75; a drain 750; a motor 76; a fourth control valve 80; a fifth control valve 90; a first pipeline 100; a first three-way valve 110; a second three-way valve 120; a third three-way valve 130; a fourth three-way valve 140; a second line 200.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second", and "third", etc. in this application are used to distinguish between different objects and not to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions.

Referring to fig. 1, fig. 1 is a schematic diagram of an embodiment of a washing machine according to an embodiment of the present application.

A washing machine includes a washing tub 10, a power pump 20, a first pipeline 100, a second pipeline 200, a strainer device 40, and an ultrafiltration device 70. The first outlet 43 of the coarse filtration device is communicated with the inlet 710 of the water inlet cavity of the ultrafiltration device. The preliminary filtering device 40 performs preliminary filtering of the washing water, and the ultrafiltration device 70 purifies the washing water subjected to the preliminary filtering. The first line 100 communicates the washing tub 10, the power pump 20, the coarse filtering device 40, and the ultrafiltration device 70 to form a first water flow path capable of recycling the washing water. The second line 200 communicates the power pump outlet 22 with the outlet chamber outlet 720 of the ultrafiltration device to form a second water flow path for back flushing the ultrafiltration device 70. Since the direction of the first water flow path is opposite to the direction of the second water flow path in the filter device, impurities attached to the inside of the filter device are washed away by the washing water circulating in the second line 200 in time when the washing water circulates in the first line 100, and vice versa. Therefore, the filter device can effectively prevent impurities in the washing water from depositing in the filter device to cause the blockage of the filter device.

Specifically, the first pipeline 100 is formed by connecting and combining a plurality of sections of pipelines. For example, the first pipeline 100 includes a first sub-pipeline and a second sub-pipeline. One end of the first sub-line communicates with the power pump outlet 22 and the other end of the first sub-line communicates with the coarse filtration device inlet 42. One end of the second sub-pipeline is communicated with the outlet 720 of the water outlet cavity of the ultrafiltration device, and the other end of the second sub-pipeline is communicated with the water inlet 11 of the washing barrel. The second pipeline 200 should be understood the same, and will not be described in detail here.

Referring to fig. 3, fig. 3 is a schematic cross-sectional structure diagram of an ultrafiltration device in an embodiment of the present application. The ultrafiltration device 70 comprises a housing 73 and a filter cartridge 74. The filter element 74 is disposed inside the housing 73. The filter element 74 is a membrane column formed by winding a filter membrane to a predetermined thickness (for example, 20mm), and the membrane column is provided with a through-hole (not shown) along the length direction thereof. Specifically, the filtering membrane can adopt an ultrafiltration membrane with the pore diameter of 50 to 200nm or a microfiltration membrane with the pore diameter of 200 to 500 nm. In some embodiments of the present application, the filtration membrane is an ultrafiltration membrane. The housing 73 is internally provided with an inlet chamber 71 and an outlet chamber 72. The inlet chamber 71 communicates with the inlet chamber inlet 710 to receive the washing water flowing into the ultrafiltration device 70. The washing water flows in from the through holes of the membrane column, flows out from the outer surface of the membrane column and enters the water outlet cavity 72; the water outlet chamber 72 is communicated with the water outlet chamber outlet 720 for the filtered clean water to flow out to the washing tub 10.

Of course, it is understood that the filter element 74 of the ultrafiltration device can also be a ceramic filter element or a silk membrane filter element, and is not particularly limited herein.

Further, a sewage draining cavity 75 is further arranged inside the shell 73, and the sewage draining cavity 75 is provided with a sewage draining outlet 750. On one hand, when the ultrafiltration device 70 works in a cross-flow filtration mode, the shearing force generated when the washing water entering the ultrafiltration device 70 flows through the membrane surface can take away particles retained on the membrane surface from the sewage outlet 750, so that the sewage layer on the surface of the filter element 74 is kept at a thinner level, and the risk of blocking the filter element 74 is favorably reduced; on the other hand, the sewage draining outlet 750 can allow the washing water flowing into the interior of the ultrafiltration device 70 to directly flow out of the sewage draining outlet 750 without being filtered, thereby facilitating the automatic cleaning of the surface of the filter element 74.

In other embodiments of the present application, the ultrafiltration device 70 further comprises a power member capable of rotating the filter element 74 of the ultrafiltration device. When the washing water flows into the inside of the filter element 74 in a rotating motion, centrifugal motion is generated, so that water molecules can be accelerated to flow out of the filter holes on the surface of the filter element 74. Therefore, the filtering flux of the filter element 74 can be increased, and the purification speed of the ultrafiltration device 70 can be increased, thereby effectively saving the filtering time. Specifically, the power member may be an electric motor 76, or may be a pneumatic device such as a rotary cylinder, which is not limited herein.

Referring to fig. 4, fig. 4 is a schematic cross-sectional structure view of a washing tub according to an embodiment of the present disclosure. It should be noted that the washing tub 10 of the washing machine generally includes an outer tub and an inner tub, and the washing tub 10 refers to the inner tub capable of rotating unless otherwise specified in this document.

Since the washing machine operates in a state in which the washing tub 10 is rotated most of the time, especially when the washing machine operates in a dehydration state, the rotation speed of the washing tub 10 is fast. Therefore, the ultrafiltration device 70 may be connected to the washing tub 10 such that the ultrafiltration device 70 can be rotated together with the washing tub 10 for the purpose of centrifugal filtration. In this way, the power member does not need to be additionally arranged to drive the filter element 74 to rotate, so that the structure of the ultrafiltration device 70 is further simplified while the filtration flux of the filter element 74 is improved.

Further, the ultrafiltration device 70 may be attached to the inner surface of the washing tub 10, i.e., the contact surface of the laundry with the washing tub 10, and form a protrusion on the inner surface of the washing tub 10. The protrusions can serve as lifting ribs of the washing tub 10, so that the washing tub 10 of the washing machine does not need to be additionally provided with the lifting ribs, the function of the washing machine is enhanced, and the structure of the washing machine is simplified.

Of course, it is understood that the ultrafiltration device 70 may be disposed inside the lifting rib of the washing tub to fully utilize the space inside the lifting rib.

To further increase the filtration flux of the filter element 74 of the ultrafiltration device 70, a vacuum pump may also be connected to the outlet chamber 72. The vacuum pump can form a vacuum environment in the outlet chamber 72, increasing the pressure difference between the inside and the outside of the filter element 74, so that the washing water can flow through the filter holes on the surface of the filter element 74 at an accelerated speed. Therefore, connecting a vacuum pump to the outlet chamber 72 can also increase the filtration flux of the filter element 74, increase the purification rate of the ultrafiltration device 70 and effectively save the filtration time.

Referring to fig. 1, the inlet 42 of the coarse filtration device is in communication with the outlet 22 of the power pump. The coarse filtration device 40 comprises a first outlet 43. The first outlet 43 is in communication with the inlet 710 of the ultrafiltration device 70. The compactness of rough filter device 40's filter core is greater than ultrafiltration device's filter core 74's compactness, rough filter device 40 is used for filtering the great filth of granularity, for example line bits, silt granule etc. is favorable to avoiding the great filth of granularity to get into cause the jam of its filter core 74 in ultrafiltration device 70. Specifically, the coarse filtration device 40 may be a common activated carbon filter or a filter using a PP cotton filter element, and is not particularly limited herein.

Further, the coarse filter 40 further includes a second outlet 41 for rapidly discharging the washing water out of the washing machine when the washing water does not need to be filtered. Since the compactness of the filter element 74 of the ultrafiltration device is less than that of the filter element of the coarse filtration device 40, the water outlet rate of the ultrafiltration device is slower than that of the coarse filtration device. Therefore, the second outlet 41 is provided to rapidly discharge the washing water out of the washing machine, thereby saving a drain time.

Further, a second control valve 50 is connected to the second outlet 41, and the second control valve 50 controls the second outlet 41 to be opened or closed with the outside. Of course, it is understood that the second outlet 41 of the coarse filter device 40 may also be integrated with a switch valve, and the switch valve may control the second outlet 41 to be communicated with or closed off from the outside, so that the second control valve 50 is not required to be additionally provided.

Further, control valves are disposed on the first pipeline 100 and the second pipeline 200, and the control valves are used for controlling the washing water to alternately circulate in the first pipeline 100 and the second pipeline 200.

Specifically, the first line 100 is provided with a first control valve 30, a third control valve 60 and a fourth control valve 80. The first control valve 30 is disposed between the power pump outlet 22 and the coarse filtration device inlet 42. The third control valve 60 is disposed between the first outlet 43 and the inlet chamber inlet 710. The fourth control valve 80 is disposed between the outlet 720 of the water outlet chamber and the inlet 11 of the washing tub.

The power pump inlet 21 is in communication with the tub drain 12. One end of the first pipeline 100 is communicated with the power pump outlet 22, and in particular, a first three-way valve 110 may be disposed at the power pump outlet 22. The washing water sequentially flows through a coarse filtering device 40, an ultrafiltration device 70 and a washing barrel water inlet 11 in the first pipeline 100; the washing water sequentially passes through the ultrafiltration device 70 and the coarse filtration device 40 in the second line 200; the first line 100 serves as a purification passage of the washing water. The washing water flows in the direction F in the ultrafiltration device 70₁。

A fifth control valve 90 is provided on the second line 200. A second three-way valve 120 is arranged between the outlet 720 of the water outlet cavity of the ultrafiltration device and the fourth control valve 80. One end of the second line 200 is connected to the strainer inlet 42, and in particular, one end of the second line 200 may be connected to the first three-way valve 110. The other end of the second line 200 is connected to the second three-way valve 120 to form a second water flow path. The second water flow path has a flow direction in the ultrafiltration device 70 and F₁In the opposite direction. The second pipelineUsed as a water flow channel for back flushing the ultrafiltration device.

The washing water may be purified by the filtering device to be recycled while circulating in the first line 100. When the operation of the washing machine is finished, clean rinse water or clean tap water may flow through the filtering device through the washing tub 10. Because the first water flow passage and the first water flow passage are in opposite directions, the filter device, especially the ultrafiltration device 70, is backwashed by clean tap water, so that a dirt layer covered on the surface of the filter membrane can be effectively cleaned, and the filter element 74 is prevented from being blocked due to dirt scaling.

Referring to fig. 2, fig. 2 is a schematic diagram of another embodiment of a washing machine according to an embodiment of the present application. A third three-way valve 130 is provided between the inlet 710 of the ultrafiltration device 70 and the third control valve 60. A fourth three-way valve 140 is provided between the fourth control valve 80 and the tub inlet 11. The coarse filter 40 further comprises a third outlet 44; the third outlet 44 communicates with the coarse filter inlet 42. The first control valve 30 is disposed at the third outlet 44. The washing water sequentially flows through the third outlet 44, the first control valve 30, the outlet 720 of the water outlet chamber of the ultrafiltration device, the inlet 710 of the water inlet chamber of the ultrafiltration device, the third three-way valve 130, the fifth control valve 90, the fourth four-way valve 140, and the water inlet 11 of the washing tub in the second pipeline 200.

The first control valve 30, the second control valve 50, the third control valve 60, the fourth control valve 80 and the fifth control valve 90 are capable of cooperating to cooperatively control the first line 100 and the second line 200 to alternately open and close. For example, when the first control valve 30, the second control valve 50, and the fifth control valve 90 are closed and the third control valve 60 and the fourth control valve 80 are opened, the second line 200 is closed and the first line 100 is opened. The washing water passes through the coarse filtering device 40 and the ultra-filtering device 70 from the washing tub water outlet 12, is purified, and flows into the washing tub 10 from the washing tub water inlet 11 for recycling, so that the washing water is repeatedly circulated to achieve the purpose of saving water in the washing machine. However, the circulation of the washing water in the first line 100 causes some contaminants to adhere to the surface of the filter element 74 of the ultrafiltration device. Contaminants adhering to the surface of the filter element 74 of the ultrafiltration device can clog the filter pores of the filter element if not washed over time.

Therefore, clogging of the filter pores due to contaminants adhering to the surface of the filter element 74 of the ultrafiltration device caused by long-term operation of the first water passage can be avoided. After the washing water circulates in the first line for a certain period of time, the second, third and

fourth control valves

50, 60 and 80 are closed, and the first line 100 is closed; the first control valve 30 and the fifth control valve 90 are opened and the second line 200 is opened. The washing water passes through the coarse filtering device 40 and the ultra-filtering device 70 from the washing tub water discharge port 12, is purified, and flows into the washing tub 10 from the washing tub water inlet 11 to be reused.

When the first line 100 and the second line 200 are alternately opened and closed, on the one hand, the circulation process of the washing water is not interrupted, and on the other hand, the circulation direction of the washing water inside the ultrafiltration device 70 is alternately changed in the opposite direction. Therefore, the dirt attached to the surface of the filter element 74 of the ultrafiltration device can be repeatedly washed, and the blockage of filter holes caused by long-time precipitation of the dirt can be effectively avoided.

Of course, it is understood that the control valves are only used to control the opening and closing of the first line 100 and the second line 200. Thus, in some embodiments, the control valve is not required. For example, when the coarse filter device 40 is provided with a component capable of controlling the opening and closing of the first outlet 43, the third control valve 60 may be omitted.

Further, the washing machine is further provided with a sterilization material, and the sterilization material is used for sterilizing the washing water, so that the cleanliness of clothes is improved. Specifically, the bactericidal material can be a natural antibacterial material such as plant essential oil, or a nano material such as nano silver. In one embodiment of the present application, the sterilization material is nano silver, and the nano silver is sprayed on the surface of the ultrafiltration membrane. Of course, it is understood that the sterilization material may also be a hollow fiber layer having a sterilization function. The hollow fiber layer is formed by weaving hollow fibers, and plant essential oil is arranged in the hollow fibers. The hollow fiber layer and the ultrafiltration membrane can be stacked together and rolled into the membrane column or the hollow fiber layer covers the outer surface of the membrane column. In some other embodiments of the present application, the washing water may be sterilized by using an ultraviolet lamp, and the ultraviolet lamp emits ultraviolet light to irradiate the washing water. In particular, the ultraviolet lamp may be disposed in the inlet chamber 71 or the outlet chamber 72 of the ultrafiltration device.

The washing machine provided by the embodiment of the present application is described in detail above, and the principle and the embodiment of the present application are explained herein by applying specific examples, and the description of the above embodiment is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A washing machine, characterized by comprising: the device comprises a washing barrel, a power pump, a first pipeline, a second pipeline, a rough filtering device and an ultrafiltration device;

the outlet of the coarse filtering device is communicated with the inlet of the ultrafiltration device; the rough filtering device is used for preliminarily filtering the washing water, and the ultrafiltration device is used for purifying the washing water subjected to preliminary filtering;

the first pipeline is communicated with the washing barrel, the power pump, the coarse filtering device and the ultrafiltration device to form a first water flow passage capable of recycling the washing water;

the second line communicates the outlet of the power pump and the outlet of the ultrafiltration device to form a second water flow path for back flushing the ultrafiltration device.

2. The washing machine as claimed in claim 1, wherein control valves are further provided on the first and second pipes for controlling the washing water to alternately circulate in the first and second pipes.

3. The washing machine as claimed in claim 1, wherein the ultrafiltration device comprises a filtration membrane having a hollow fiber layer formed by weaving hollow fibers filled with natural antibacterial materials or nano materials.

4. The washing machine as claimed in claim 3, wherein the ultrafiltration device further comprises a vacuum pump; the vacuum pump is used for increasing the pressure difference between two sides of the filtering membrane.

5. A washing machine as claimed in claim 1 wherein the coarse filtration means comprises a first outlet and a second outlet; the first outlet is communicated with the inlet of the ultrafiltration device; the second outlet is used for rapidly discharging the washing water out of the washing machine when the washing water does not need to be filtered.

6. The washing machine as claimed in claim 5, wherein the washing water flows through a drain port of a washing tub, a strainer device, an ultrafiltration device, a water inlet of the washing tub in sequence in the first pipe; the washing water sequentially flows through the ultrafiltration device and the rough filtration device in the second pipeline; the first line serves as a purification passage of the washing water; the second line may be used as a water flow path for back flushing the ultrafiltration device.

7. A washing machine as claimed in claim 6 wherein the coarse filtration means further comprises a third outlet; the third outlet is communicated with the inlet of the coarse filtering device; the washing water sequentially flows through a coarse filtering device and an ultrafiltration device in the first pipeline; the washing water flows through a third outlet, an outlet of the ultrafiltration device, an inlet of the ultrafiltration device and a water inlet of the washing barrel in sequence in the second pipeline; the first line and the second line are alternately opened to allow the coarse filtering device and/or the ultra-filtering device to purify the washing water.

8. A washing machine as claimed in claim 1, characterized in that the ultrafiltration device comprises a filter element and a power member which is able to rotate the filter element.

9. The washing machine as claimed in claim 1, wherein the ultrafiltration device is connected to the washing tub and is rotatable with the washing tub.

10. The washing machine as claimed in claim 9, wherein the ultrafiltration device is attached to an inner surface of the washing tub and formed with a protrusion.