CN111850967A - Self-cleaning washing machine and control method thereof - Google Patents
Self-cleaning washing machine and control method thereof Download PDFInfo
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- CN111850967A CN111850967A CN201910360085.7A CN201910360085A CN111850967A CN 111850967 A CN111850967 A CN 111850967A CN 201910360085 A CN201910360085 A CN 201910360085A CN 111850967 A CN111850967 A CN 111850967A
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- 238000005406 washing Methods 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000004140 cleaning Methods 0.000 title claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 181
- 230000008569 process Effects 0.000 claims description 47
- 239000000523 sample Substances 0.000 claims description 24
- 230000002441 reversible effect Effects 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 8
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 14
- 230000033001 locomotion Effects 0.000 description 22
- 229910001220 stainless steel Inorganic materials 0.000 description 16
- 239000010935 stainless steel Substances 0.000 description 16
- 238000001914 filtration Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000007599 discharging Methods 0.000 description 6
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- 238000001746 injection moulding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
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- 230000002829 reductive effect Effects 0.000 description 2
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- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
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Classifications
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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
- D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
- D06F35/005—Methods for washing, rinsing or spin-drying
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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
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/087—Water level measuring or regulating devices
Abstract
The invention discloses a self-cleaning washing machine, which comprises an outer barrel, an inner barrel, a wave wheel and a filter, wherein the wave wheel and the filter are arranged at the bottom of the inner barrel, the self-cleaning washing machine also comprises a first water level detection device arranged below the wave wheel, and the washing machine controls the inner barrel and/or the wave wheel to rotate according to water level information detected by the first water level detection device so as to clean the filter by utilizing drainage. The washing machine provided by the invention can realize accurate detection of the water level below the impeller, so that the self-cleaning program can be conveniently executed after the drained water reaches below the impeller, and the phenomenon that the thread scraps on the filter return to the inner barrel to pollute clothes is avoided. The invention also relates to a control method of the self-cleaning washing machine.
Description
Technical Field
The invention belongs to the field of household appliances, and particularly relates to a self-cleaning washing machine and a control method thereof.
Background
The filter is arranged on the side wall of the inner barrel of the existing washing machine, the water cavity on the side wall is used for feeding water from the bottom or the side to realize the filtering function, but the filter and the water cavity are arranged on the side wall of the inner barrel, the volume of the inner barrel can be occupied, the space for accommodating clothes is reduced, and the filter is influenced by the water level and the water flow speed, the filtering is not thorough, in addition, the filter is difficult to continue to collect the thread scraps after the thread scraps are collected fully, the filter is required to be manually taken out by a user for cleaning after the washing is finished, the labor intensity is high, and the filter which is easy to damage.
The prior art discloses a self-cleaning washing machine, which is provided with a filter at the central hole position of the bottom of an inner barrel for filtering thread scraps, and the thread scraps collected in the circulation process are reversely washed in the drainage process through the difference of the water flow directions in the circulation process and the drainage process of washing water, and are discharged out of a machine body through a drainage pipeline.
However, the washing machine does not add a corresponding self-cleaning program to the structure to specially clean the filter. Because the rivers are relatively stable among the drainage process, when the backwash filter, the comparatively stubborn thread scraps that glue in the filter bottom are difficult to be taken away by stable rivers, therefore need increase the impact force to the thread scraps of filter bottom at the in-process of drainage to realize the automatically cleaning of filter with the clearance of thread scraps.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a self-cleaning washing machine and a control method thereof.
In order to solve the technical problems, the invention adopts the technical scheme that:
a self-cleaning washing machine comprises an outer barrel, an inner barrel, a wave wheel and a filter, wherein the wave wheel and the filter are arranged at the bottom of the inner barrel, the self-cleaning washing machine also comprises a first water level detection device arranged below the wave wheel, and the washing machine controls the inner barrel and/or the wave wheel to rotate according to water level information detected by the first water level detection device so as to clean the filter by utilizing drainage.
In one embodiment, the first water level detecting device is a contact type water level sensor, and includes a plurality of probes disposed at different water levels.
In one embodiment, the first water level detecting device includes a first probe and a second probe, the first probe is disposed at a first water level, the second probe is disposed at a second water level, and the first water level is higher than the second water level.
In one embodiment, the first probe is disposed on a portion of the inner wall of the outer tub higher than or flush with the filter, and the second probe is disposed on the inner bottom wall of the outer tub.
In one embodiment, a second water level detection device is disposed above the pulsator, and the second water level detection device detects feedback water level information through air pressure change in the inner tub.
Another object of the present invention is to provide a control method of a self-cleaning washing machine, the washing machine including an inner tub, an outer tub, a pulsator and a filter at the bottom of the inner tub, the washing machine being provided with a self-cleaning program at a draining stage, and controlling the inner tub and/or the pulsator to rotate when the washing machine determines that a water level reaches below the pulsator, so as to clean the filter by draining.
In one embodiment, a first set water level below the pulsator is preset, and when the drain water reaches the first set water level, a self-cleaning process is started to control the inner tub and/or the pulsator to rotate.
In one embodiment, when the drained water reaches the first set water level, the self-cleaning program is started, and the washing machine continues to drain water or stops draining for a set time.
As an embodiment, a second set water level lower than the first set water level is preset, and when the water discharge reaches the first set water level, the self-cleaning program is operated and the water discharge is continued until the water level reaches the second set water level.
In one embodiment, the self-cleaning program controls the rotation of the pulsator and/or the inner tub to be alternately started and stopped and/or to be alternately rotated in forward and reverse directions and/or to change the rotation speed so as to clean the filter by using the drained water.
In one embodiment, the self-cleaning program controls the inner barrel to rotate forward for a time T1 and then rotate backward for a time T2, and the cycle is performed in this process.
As one embodiment, the inner barrel rotates at a fixed or variable speed in the forward or reverse rotation process;
in one embodiment, the rotation speed of the inner tub in the self-cleaning process is less than or equal to the fixed rotation speed V0 of the inner tub during the dehydration process of the washing machine.
As an embodiment, the self-cleaning process is started alone or during the last drain of a single operation of the washing machine.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
according to the washing machine, the water level detection device is arranged below the impeller, so that the accurate detection of the water level below the impeller is realized, the self-cleaning program is conveniently executed after the drained water reaches the position below the impeller, and the phenomenon that the thread scraps on the filter return to the inner barrel to pollute clothes is avoided.
The control method of the washing machine comprises a self-cleaning program, and the self-cleaning program is started after the water is drained below the impeller, so that the phenomenon that thread scraps on a filter return to an inner barrel to pollute clothes when self-cleaning is carried out is avoided, the clothes washing is cleaner and more sanitary, and the time and the water are saved.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of the self-cleaning washing machine according to the present invention;
FIG. 2 is a schematic view of a partially exploded structure of the self-cleaning washing machine according to the present invention;
FIG. 3 is a schematic view of a filter according to the present invention;
FIG. 4 is a schematic view of a filter according to the present invention;
FIG. 5 is a schematic view of a filter according to the present invention;
FIG. 6 is a schematic view of the self-cleaning washing machine according to the present invention;
FIG. 7 is a schematic view of a partial structure of an inner tub of the self-cleaning washing machine according to the present invention;
the figure is marked with:
11. a filter; 12. an inner barrel; 13. an outer tub; 14. a flange; 15. a screw; 111. a through hole; 112. clamping convex; 113. curling; 114. water passing holes; 115. mounting holes; 116. reinforcing ribs; 121. a central drainage hole; 122. an opening; 141. a clamping hole; 21. a first probe; 22. a second probe.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention relates to a self-cleaning washing machine and a control method thereof.
The self-cleaning washing machine has various implementations, and the present invention is exemplified with reference to the washing machine structure of fig. 1 to 7.
As shown in fig. 1, a self-cleaning washing machine includes an outer tub 13, an inner tub 12, a pulsator and a filter 11 disposed at the bottom of the inner tub 12, and a first water level detecting device disposed below the pulsator, and the washing machine controls the inner tub 12 and/or the pulsator to rotate according to water level information detected by the first water level detecting device to clean the filter 11 by draining water.
In one embodiment, the first water level detecting device is a contact type water level sensor, and includes a first probe 21 and a second probe 22, where the first probe 21 is located at a first water level, the second probe 22 is located at a second water level, and the first water level is higher than the second water level.
The first water level detection device can realize accurate detection of the water level below the impeller, so that the washing machine can control the inner barrel 12 and/or the impeller to rotate according to the corresponding water level, disturbed water flow is formed by drainage, thread scraps on the filter 11 are cleaned, self-cleaning is realized, and water and time are saved.
In order to accurately measure the water level below the pulsator and effectively control the corresponding water level range of the inner tub 12 and/or the pulsator rotation, the first probe 21 is disposed at a position where the inner wall of the outer tub 13 is higher than or flush with the filter 11, and the second probe 22 is disposed at the inner bottom wall of the outer tub 13. When the first probe 21 is exposed out of the water surface, the inner barrel 12 and/or the impeller is controlled to rotate, the self-cleaning program is started, and when the second probe 22 is exposed out of the water surface, the rotation of the inner barrel 12 and/or the impeller is stopped, and the self-cleaning program is ended.
The arrangement can effectively prevent the thread scraps on the filter 11 from flowing back to the inner barrel 12 along with the water flow through the impeller to pollute clothes, and the clothes washing is cleaner and more sanitary.
A second water level detection device is arranged above the impeller, the second water level detection device detects feedback water level information through air pressure change in the inner barrel 12, and when the water level of the drainage water of the washing machine is higher than that of the impeller, the air pressure type second water level detection device can conveniently detect and feed back real-time water level.
The following description is given with reference to a detailed structure of a partially constructed self-cleaning washing machine in order to better understand the present invention.
The filter 11 is fixed at the bottom of the inner tub 12 of the washing machine, and the outer diameter of the filter 11 is larger than the diameter of the central drainage hole 121 at the bottom of the inner tub 12; the filter 11 performs its filtering function by circulating the washing water from the bottom of the filter 11 through the filter 11 into the inner tub 12, and performs its self-cleaning function by draining the washing water from the central drainage hole 121 through the filter 11.
The filter 11 is fixed at the bottom of the inner barrel 12 of the washing machine, so as to avoid occupying the volume of the inner barrel 12; the outer diameter of the filter 11 is larger than the diameter of the central drainage hole 121 at the bottom of the inner barrel 12, so that the washing water is ensured to pass through the filter 11 in the flowing process, and the filtering is more thorough; with the rotation of the impeller of the washing machine, the washing water sequentially passes through the gap between the inner barrel 12 and the outer barrel 13, the filter 11 and the bottom of the inner barrel 12 from the inside of the inner barrel 12 and then returns to the inside of the inner barrel 12 to form circulation, and the thread scraps in the washing water are collected at the filter 11; in the drainage stage, the washing water passes through the bottom of the inner barrel 12 and the filter 11 from the inside of the inner barrel 12 in sequence, then is drained from the drainage pipe, and the washing water washes the filter 11; the pollution caused by accumulation of the thread scraps is avoided, the filter 11 does not need to be disassembled manually for cleaning, the labor intensity is reduced, and the filter 11 is prevented from being disassembled for many times and damaged.
The filter 11 is in an umbrella-shaped structure with a high middle part and a low edge, and a first gap A is arranged between the edge of the filter 11 and the bottom of the inner barrel 12. In the washing process, as the impeller rotates, the washing water moves towards the side wall of the inner barrel 12 under the action of centrifugal force, a low-pressure area is formed at the center of the impeller, the washing water flows to the bottom of the filter 11 through a gap between the inner barrel 12 and the outer barrel 13, the arrangement of the umbrella-shaped structure is convenient for the washing water to flow towards the center of the filter 11 along the surface of the filter 11 and the washing water to flow back to the inner barrel 12; in the drainage process, the water flowing out of the drainage center hole 121 flushes the filter 11, the arrangement of the umbrella-shaped structure facilitates the smooth flowing of the drained water, the flushed thread scraps can flow down along the filter 11 and be drained conveniently, and the umbrella-shaped structure is matched with the first gap A to facilitate drainage.
A second gap B is provided between the middle of the filter 11 and the bottom of the inner tub 12. The second gap B is larger than 2mm and cannot be too small, otherwise thread scraps are easily clamped. Along the direction of keeping away from the washing machine center, second clearance B can only be bigger and bigger, can not be sharp angle structure, otherwise also easily presss from both sides the line bits, is difficult to wash during the drainage.
As one of the filter structures shown in fig. 2 and 3, the filter 11 is a frame provided with a plurality of through-holes 111, the plurality of through-holes 111 are evenly spaced around the center of the filter 11, and a screen seals the plurality of through-holes 111 such that the washing water passes through the screen. The filter 11 is clamped with the flange 14 at the bottom of the inner barrel 12, a plurality of clamping protrusions 112 are arranged on the surface of the filter 11 close to the flange 14, clamping holes 141 are formed in the position, opposite to the clamping protrusions 112, on the flange 14, and the clamping protrusions 112 are matched with the clamping holes 141, so that the mounting and dismounting are convenient. The frame, the clamping protrusions 112 and the filter screen are integrally formed by injection molding, so that the processing and the production are convenient. The flange 14 is installed at the bottom of the inner barrel 12 by screws 15, and the filter 11 is fastened to the bottom of the flange 14.
The filter 11 is an injection-molded part with a filter screen, refer to fig. 2-3, or the filter 11 has a pattern as shown in fig. 4, the filter 11 is a stainless steel plate, a plurality of water through holes 114 are formed in the stainless steel plate, and the plurality of water through holes 114 are uniformly distributed on the stainless steel plate. In the circulation process, the washing water passes through the filter 11, the water flows through the water passing holes 114, and the thread scraps adhere to the bottom surface of the stainless steel plate, and are easily washed because the surface of the stainless steel plate is smooth when the washing water washes the stainless steel plate. The diameter of the water passing holes 114 is set as needed in order to filter the thread waste.
The edge of the stainless steel plate is provided with a curled edge 113, and the curled edge 113 is formed by bending the edge of the stainless steel plate towards the direction far away from the bottom of the inner barrel 12. The edge is thickened due to the arrangement of the curled edge 113, the strength and the service life of the filter 11 are increased, and the filter is not easy to bend in the installation process. The arrangement of the turned edge 113 also prevents the original sharp edge of the stainless steel plate from being exposed, so that the stainless steel plate cannot be hurt to the carrying and installing personnel.
The flange 14 is installed at the bottom of the inner barrel 12 through a screw 15, the filter 11 is connected with the flange 14 at the bottom of the inner barrel 12 through a screw, a plurality of installation holes 115 penetrating through the stainless steel plate are formed in the stainless steel plate, and the installation holes 115 can be unthreaded holes or threaded holes.
On the basis of the above-mentioned filter 11 style, it can be further improved, as shown in fig. 5, a reinforcing rib 116 is provided at the edge of the stainless steel plate, the cross-sectional shape of the reinforcing rib 116 is U-shaped, the reinforcing rib 116 covers the edge of the stainless steel plate, and the reinforcing rib 116 is formed by injection molding. The edge is thickened due to the arrangement of the reinforcing ribs 116, the strength and the service life of the filter 11 are increased, and the filter is not easy to bend in the installation process. The arrangement of the reinforcing ribs 116 also prevents the original sharp edge of the stainless steel plate from being exposed, so that the stainless steel plate cannot be hurt to carrying and installing personnel.
The self-cleaning washing machine may be further configured such that the bottom of the inner tub 12 is provided with an opening 122 on a side surface for the washing water to pass through; referring to fig. 6 and 7, as the pulsator of the washing machine rotates, the washing water passes through the gap between the inner tub 12 and the outer tub 13, the filter 11, the bottom of the inner tub 12 from the inside of the inner tub 12, and then returns to the inside of the inner tub 12 to form a first circulation path, and lint in the washing water is collected at the filter 11, and at the same time, the washing water passes through the opening 122 of the bottom of the inner tub 12, the filter 11, the bottom of the inner tub 21 from the inside of the inner tub 12 in order, and then returns to the inside of the inner tub 12 to form a second circulation path, as shown by the arrow direction in fig; the second circulation route shortens the water circulation path, ensures the water flow speed and impact force, ensures most of water to be discharged from the opening 122 and directly returns to the inner barrel 12 through the filter 11 downwards, and further improves the filtering effect. In the draining stage, the washing water is drained from the inside of the inner tub 12 through the bottom of the inner tub 12 and the filter 11 and then through the drain pipe, and the washing water washes the filter 11.
An opening 122 is provided on the side of the inner tub bottom. The number of the openings 122 can be set according to the requirement, and the openings 122 are evenly distributed around the central line of the inner barrel at intervals, but the number is not limited. Preferably, two openings 122 are provided.
On the washing machine with the side opening of the inner tub, the filter 11 is arranged as described above, forming another self-cleaning washing machine.
The washing water in the above self-cleaning washing machine includes the following routes:
1. in the washing or rinsing stage, as the pulsator of the washing machine rotates, the washing water sequentially passes through the gap between the inner tub 12 and the outer tub 13, the filter 11, the bottom of the inner tub 12 from the inside of the inner tub 12, and then returns to the inside of the inner tub 12 to form a first circulation path, and lint in the washing water is collected at the filter 11;
2. in the washing machine with the opening 122 in the inner tub, in the washing or rinsing stage, as the pulsator of the washing machine rotates, the washing water sequentially passes through the opening 122 at the bottom of the inner tub 12, the filter 11, the bottom of the inner tub 12 from the inside of the inner tub 12, and then returns to the inside of the inner tub 12 to form a second circulation path, and the lint in the washing water is collected at the filter 11;
3. in the draining stage, the washing water passes through the bottom of the inner tub 12 and the filter 11 in sequence from the inside of the inner tub 12, and then is drained from the drain pipe, and the washing water washes the filter 11.
The first washing machine includes the line 1 and the line 3, and the second washing machine includes the above three lines, all of which can achieve the purpose of filtering lint and self-cleaning of the filter 11.
In the drainage stage of the common impeller washing machine, the inner barrel and the impeller are in a static state, and the dewatering process is carried out after the drainage is finished. During the drainage process of the self-cleaning washing machine, the thread scraps are flushed away by the action of the reverse water flow and discharged from the drainage pipe. However, since the lint is circulated for many times in the washing or rinsing stage, the lint may be attached to the filter 11 more durably, and the lint cannot be cleaned completely only by the regular washing water flow in the draining stage. In the route 3, the washing water is discharged out of the machine body according to a specific route in the water discharging stage, the water flow is relatively stable, and the washing of the thread scraps of the filter 11 has a certain limitation.
Based on the structure of the self-cleaning washing machine, the washing machine is provided with a self-cleaning program in the drainage stage, and when the washing machine judges that the water level reaches below the impeller, the inner barrel and/or the impeller are controlled to rotate so as to clean the filter 11 by utilizing drainage. In the drainage process of the washing machine, when the water level is above the impeller, the inner barrel and/or the impeller keep still. The washing machine presets a first set water level below the impeller, and when the drained water reaches the first set water level, the self-cleaning program is started to control the inner barrel and/or the impeller to rotate, so that disturbed water flow is formed, and the filter 11 is cleaned.
In one embodiment, when the drained water reaches the first set water level, the self-cleaning program is started, and the washing machine continues to drain water or stops draining for a set time.
If the washing machine continues to drain water when executing the self-cleaning program, presetting a second set water level lower than the first set water level, and stopping the operation when the self-cleaning program operates until the water level reaches the second set water level. The purpose of presetting the second set water level is to ensure that the filter 11 is flushed by the water quantity between the inner barrel and the outer barrel in the draining stage, and after the draining is finished, the self-cleaning procedure is meaningless if no washing water exists around the filter 11.
The self-cleaning program is independent of the washing program of the washing machine, the washing program comprises the traditional links of soaking, washing, rinsing, dewatering and the like, the self-cleaning program can be started in any water discharging process in the process, and can also be started in the water discharging operation after the independent water inlet link is carried out, preferably, the self-cleaning program is started in the last water discharging process before the complete washing program is finished, and the self-cleaning program is set to ensure that a large amount of thread scraps in the washing process of the washing machine can be intensively and thoroughly cleaned, and the phenomenon that the self-cleaning program is started in each water discharging process to generate large consumption of electric quantity is avoided.
The lint trapped by the filter 11 may have different amounts due to different laundry and different washing courses, and thus the turn-on of the self-cleaning course needs to be set according to a specific situation.
A small amount of lint may be generated during one complete washing process, and since the filter 11 takes part of the lint with the washing water during the draining process, the filter 11 is not clogged without starting the self-cleaning process.
The washed clothes are made of different materials, the amount of the generated thread scraps is different, for example, the amount of the thread scraps generated by wool fabrics and the like is relatively large, and in order to ensure the cleanness of the filter 11, a self-cleaning program can be started in each water discharging process to avoid the blockage of the filter 11.
The self-cleaning program can be started when the clothes are not washed, a user can clean the clothes regularly after using the clothes for a period of time, a certain amount of water is injected into the inner barrel, and the self-cleaning program can be started by selecting the corresponding function, so that the single self-cleaning program is completed.
In the above route 3, the washing water in the drainage process flows to the drainage pipeline through the opening of the drainage valve and the guidance of the gravity or the drainage pump, and there is no disturbance of other hardware in the flow process, so the water flow is stable, the washing of the filter 11 is mild, and the purpose of thorough cleaning of stubborn thread scraps cannot be achieved. Specific embodiments of the self-cleaning procedure are rotation of the inner tub, rotation of the inner tub and the pulsator, and rotation of the pulsator. The rotation breaks the smooth flow of the water flow, actively rotating or causing the water to form a turbulent flow to more intensely wash the filter 11.
The following detailed description is made with reference to some specific implementations.
Example one
The self-cleaning process of the present embodiment is implemented in such a manner that the self-cleaning of the filter 11 is achieved by the rotation of the inner tub.
Because the filter 11 is fixedly connected with the inner barrel, the rotation of the inner barrel tends to cause the rotation of the filter 11, and in the drainage stage, because the washing water is arranged around the filter 11, the filter 11 is driven to rotate in the washing water in the rotation process of the inner barrel, so that the filter 11 and the washing water generate large relative movement.
The movement of the inner barrel can only be continuously rotated in the same direction at a single speed, and can also be realized by starting and stopping alternation and/or forward rotation and reverse rotation alternation and/or rotating speed change of the rotation of the inner barrel.
The movement of the inner tub performs a single combined movement pattern for periodic operation during the start of the self-cleaning procedure.
The specific mode can be that the inner barrel rotates forwards for a time T1 and then rotates backwards for a time T2, the rotating speed of the inner barrel can be changed in the process of rotating forwards or backwards, and periodic circulation is carried out.
The inner barrel rotates from a static state and is kept at a stable speed set as V0 in the dehydration process, and the rotating speed of the inner barrel in the self-cleaning process is less than or equal to the rotating speed V0 of the inner barrel in the dehydration process of the washing machine;
Preferably, the inner barrel has a fixed rotation speed of V1 and satisfies V1 less than or equal to V0;
preferably, the inner barrel has a variable rotation speed V2, and satisfies that the maximum value of V2 is less than or equal to V0.
For example, the movement mode of the inner barrel is set to be 5 seconds in forward rotation and 5 seconds in reverse rotation, once speed change is carried out in the forward rotation process, once speed change is carried out in the reverse rotation process, the single combined movement mode lasts for 10 seconds, the movement process is repeated in the whole self-cleaning program process, and each 10 seconds is a period, and the process is repeated until the self-cleaning program is finished.
The essence of this embodiment is to get rid of lint and other impurities attached to the filter 11 by the active movement of the filter 11.
Example two
The self-cleaning procedure of this embodiment is the movement of both the inner tub and the pulsator, and is different from the previous embodiment in that the movement of the pulsator is added. This embodiment can be applied to a washing machine in which the inner tub and the pulsator can perform independent motions without being constrained or interfered with each other.
The specific motion modes of the impeller and the inner barrel are the same direction/different directions and the same speed/different speeds of rotation of the impeller and the inner barrel.
Preferably, the pulsator and the inner tub have different rotation directions. Because the rotation direction of the impeller can drive the movement direction of the water flow, if the direction is clockwise horizontal direction to flow to the drain pipe to form clockwise vortex, and the inner barrel drives the filter 11 to rotate anticlockwise, the filter 11 moving anticlockwise and the water flow flowing clockwise generate stronger impact, so that the thread scraps attached on the filter 11 are more easily taken away by the water flow.
In the first embodiment, the movement of the inner tub has been specifically described, and in this embodiment, based on the movement of the inner tub, the pulsator and the inner tub are set to rotate in the same direction/different directions and at the same speed/different speeds, so as to generate a more complicated movement, thereby achieving a better cleaning effect.
The embodiment combines the motion of the inner barrel and the wave wheel, not only can achieve the purpose by driving the active motion of the filter 11 through the inner barrel, but also can increase the complexity of water flow, thereby leading more thread scraps on the filter 11 to be washed away and achieving the purpose of cleaning.
EXAMPLE III
The self-cleaning procedure of this embodiment is only the rotation of the pulsator.
The rotation of the inner barrel of part of the pulsator washing machine is mainly used for the dehydration process, the inner barrel has a single rotation direction in the dehydration process, the rotation of the inner barrel can drive the pulsator to rotate in the same direction and at the same speed, and the rotation of the inner barrel can cause the increase of energy consumption.
Due to the limitation of the above conditions, the impeller has the property of rotating in two forward and reverse directions, and the water flow can be disturbed by the movement of the impeller to achieve the purpose of self-cleaning.
The motion mode of the impeller can be realized by starting and stopping alternatively and/or forward and reverse rotation alternatively and/or changing the rotating speed.
The essence of this embodiment is that the filter 11 is cleaned more thoroughly by disturbing the washing water during the draining phase, which makes the water flow through the filter 11 more complicated and irregular flushing of the filter 11.
The control method sets a self-cleaning program in the drainage process, and provides a more thorough cleaning mode for the filter 11; the self-cleaning mode is flexible, various motion combination modes of the inner barrel and the impeller are provided, and the purpose of cleaning the bottom of the filter 11 can be achieved by utilizing the active motion of the filter 11 and the irregular impact of water flow; the self-cleaning program is arranged in the drainage process, so that the cleaning program is not additionally added, and the washing time is saved; the self-cleaning program can be set according to the requirement, the power consumption of the washing machine cannot be greatly increased, and the burden of a user is not increased on the premise of achieving the self-cleaning purpose.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A self-cleaning washing machine comprises an outer barrel, an inner barrel, a wave wheel and a filter, wherein the wave wheel and the filter are arranged at the bottom of the inner barrel.
2. The self-cleaning washing machine of claim 1, wherein the first water level detecting means is a contact type water level sensor including a plurality of probes provided at different water levels;
preferably, the first water level detecting device comprises a first probe and a second probe, the first probe is arranged at a first water level, the second probe is arranged at a second water level, and the first water level is higher than the second water level.
3. The self-cleaning washing machine as claimed in claim 2, wherein the first probe is provided on the inner wall of the outer tub at a position higher than or flush with the filter, and the second probe is provided on the inner bottom wall of the outer tub.
4. The self-cleaning washing machine as claimed in any one of claims 1 to 3, wherein a second water level detecting device is provided above the pulsator, and the second water level detecting device detects feedback water level information by a change in air pressure in the inner tub.
5. A control method of a self-cleaning washing machine, the washing machine comprises an inner barrel, an outer barrel, a wave wheel and a filter, wherein the wave wheel and the filter are positioned at the bottom of the inner barrel.
6. The control method as claimed in claim 5, wherein a first set water level below the pulsator is preset, and when the drain water reaches the first set water level, the self-cleaning process is started to control the inner tub and/or the pulsator to rotate.
7. The control method of claim 6, wherein when the drain water reaches the first set water level, a self-cleaning program is started, and the washing machine continues to drain water or stops draining water for a set time.
8. The control method as claimed in claim 7, wherein a second set water level lower than the first set water level is preset, and when the water discharge reaches the first set water level, a self-cleaning program is operated and the water discharge is continued until the water level reaches the second set water level.
9. The control method according to any one of claims 5 to 8, wherein the self-cleaning program controls start-stop alternation and/or forward rotation and reverse rotation alternation and/or rotation speed change of rotation of the pulsator and/or the inner tub to clean the filter with the drain water;
Preferably, the self-cleaning program controls the inner barrel to rotate forward for a time T1 and then rotate backward for a time T2, and the circulation is carried out in the process;
preferably, the rotating speed of the inner barrel in the forward rotation or reverse rotation process is fixed or changed;
more preferably, the rotation speed of the inner tub in the self-cleaning process is less than or equal to the fixed rotation speed V0 of the inner tub during the dehydration process of the washing machine.
10. The control method according to any one of claims 5 to 8, wherein the self-cleaning process is started alone or during the last drain of a single operation of the washing machine.
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| CN201910360085.7A CN111850967A (en) | 2019-04-30 | 2019-04-30 | Self-cleaning washing machine and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022199358A1 (en) * | 2021-03-22 | 2022-09-29 | 青岛海尔滚筒洗衣机有限公司 | Pulsator assembly and washing machine |
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