CN113550116A - Control method of drum washing machine - Google Patents
Control method of drum washing machine Download PDFInfo
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- CN113550116A CN113550116A CN202010340022.8A CN202010340022A CN113550116A CN 113550116 A CN113550116 A CN 113550116A CN 202010340022 A CN202010340022 A CN 202010340022A CN 113550116 A CN113550116 A CN 113550116A
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- control method
- drum washing
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- 238000005406 washing Methods 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 124
- 238000005507 spraying Methods 0.000 claims abstract description 47
- 239000007921 spray Substances 0.000 claims abstract description 41
- 238000004140 cleaning Methods 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 210000003811 finger Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 230000007306 turnover Effects 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
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps
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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
- D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
- D06F17/04—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid solely by water jets
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/10—Filtering arrangements
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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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/42—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to filters or pumps
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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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/58—Indications or alarms to the control system or to the user
Abstract
The invention belongs to the field of drum washing machines, and particularly provides a control method of a drum washing machine. The invention aims to solve the problem that the existing drum washing machine has poor washing and rinsing effects. For the purpose, the drum washing machine comprises an outer drum, a shell and a spraying system, wherein the spraying system comprises a water inlet pipeline, a circulating spraying pump and a water outlet pipeline which are sequentially connected, and a filter and a differential pressure sensor are also arranged in the circulating spraying system; the circulating spray pump sucks the washing water in the outer barrel through the water inlet pipeline and sends the washing water out through the water outlet pipeline, so that the clothes are sprayed, and the control method comprises the following steps: controlling the start of the circulating spray pump; controlling a differential pressure sensor to detect the pressure difference on two sides of the filter; comparing the pressure difference with a set pressure difference; and selectively controlling the circulating spraying pump to continue to operate according to the comparison result. The method can find and process the blockage at the first time, and prevent the condition that the washing machine is not thoroughly cleaned due to poor spraying effect.
Description
Technical Field
The invention belongs to the technical field of drum washing machines, and particularly provides a control method of a drum washing machine.
Background
The existing drum washing machine originates from Europe, the washing method is designed by simulating the principle that a hammer strikes clothes, the drum is rotated by using the mechanical work of a motor, the clothes are continuously lifted and dropped in the drum, then lifted and dropped again, the clothes are repeatedly moved, and the clothes are washed clean under the combined action of washing powder and water. The general drum washing machine saves water compared with the impeller washing machine, and is only 1/3 or more of the impeller washing machine.
Because the drum washes the clothes by beating, the water quantity in the drum is less, the effect of washing and rinsing the clothes by water flow is poorer, and the operation time of the drum washing machine or the rinsing frequency needs to be increased for improving the washing and rinsing effect. These inevitably cause problems such as an increase in power consumption and an increase in washing time, which are undesirable for users.
Accordingly, there is a need in the art for a new control method for a drum washing machine to solve the problem of poor washing and rinsing effects of the existing drum washing machine.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem of poor washing and rinsing effects of the existing drum washing machine, the present invention provides a control method of a drum washing machine, wherein the drum washing machine comprises an outer drum and a shell, and is characterized in that the drum washing machine further comprises a spraying system, the spraying system comprises a water inlet pipeline, a circulating spraying pump and a water outlet pipeline which are connected in sequence, a water inlet of the water inlet pipeline is communicated with the outer drum, a water outlet of the water outlet pipeline is also communicated with the outer drum, and a filter and a differential pressure sensor are further arranged in the circulating spraying system; the circulating spray pump sucks washing water in the outer barrel through the water inlet pipeline and sends the washing water out through the water outlet pipeline, so that clothes are sprayed, the filter is used for filtering sundries in the washing water, the differential pressure sensor is used for detecting whether the filter is blocked or not, and the control method comprises the following steps:
controlling the circulating spray pump to start;
controlling the differential pressure sensor to detect a pressure difference across the filter;
comparing the pressure difference with a set pressure difference;
and selectively controlling the circulating spray pump to continue to operate according to the comparison result.
In a preferred embodiment of the control method of the drum washing machine, the step of selectively controlling the circulation spray pump to continue operating according to the comparison result specifically includes:
and when the pressure difference is greater than or equal to the set pressure difference, controlling the circulating spray pump to stop running.
In a preferred embodiment of the control method of the drum washing machine, after the step of "controlling the circulation spray pump to stop operating when the pressure difference is greater than or equal to a set pressure difference", the control method further includes:
starting a drainage program to drain the washing water in the drum washing machine;
and sending alarm information to prompt a user to clean the filter.
In a preferred embodiment of the control method of the drum washing machine, the step of selectively controlling the circulation spray pump to continue operating according to the comparison result specifically includes:
and when the pressure difference is smaller than the set pressure difference, controlling the circulating spraying system to continuously operate.
In a preferred technical solution of the control method of the drum washing machine, the differential pressure sensor includes two pressure sensors and a processor, the two pressure sensors are respectively disposed at two sides of the filter, and the processor is in communication connection with the two pressure sensors.
In a preferred technical scheme of the control method of the drum washing machine, the water outlet pipeline comprises a water supply pipe and an annular cavity, one end of the water supply pipe is communicated with the circulating spray pump, the other end of the water supply pipe is communicated with the annular cavity, the annular cavity is fixed at a throwing port of the outer barrel or the shell is close to the throwing port of the outer barrel, and a nozzle is arranged on the annular cavity and faces towards the inner side of the outer barrel.
In a preferred embodiment of the control method of the drum washing machine, the filter is a filter having a self-cleaning capability, which performs a filtering function when water flows in a direction of spraying, and performs self-cleaning when the water flows in a direction opposite to the direction of spraying; a first open-close valve is arranged on the water supply pipe, and a second open-close valve is arranged on the water inlet pipeline; the spraying system also comprises a water return pipe, one end of the water return pipe is communicated with a part of the water feeding pipe between the first open-close valve and the circulating spraying pump, and the other end of the water return pipe is communicated with a part of the water inlet pipeline between the second open-close valve and the outer cylinder; the water return pipe is also provided with a third opening and closing valve and a filter disc; the drum washing machine further comprises a drain pipe, the drain pipe is communicated with the water inlet pipeline between the second opening and closing valve and the circulating spray pump, and a fourth opening and closing valve is further arranged on the drain pipe; the step of selectively controlling the circulating spray pump to continue to operate according to the comparison result further comprises the following steps:
when the pressure difference is equal to or greater than a set pressure difference, closing the first opening/closing valve and the second opening/closing valve, and opening the third opening/closing valve and the fourth opening/closing valve;
and controlling the circulating spray pump to reversely pump water.
In a preferred technical solution of the control method of the drum washing machine, the drum washing machine further includes a sealing window gasket, the sealing window gasket is fixed at the dispensing opening of the outer tub or the housing is close to the dispensing opening of the outer tub, the sealing window gasket is provided with a nozzle mounting hole, and the nozzle is inserted into the nozzle mounting hole.
In a preferred embodiment of the control method of the drum washing machine, the diameter of the nozzle mounting hole is smaller than the diameter of the nozzle; and/or the like and/or,
the nozzle mounting hole covers the nozzle except the water jet.
In a preferred embodiment of the control method of the drum washing machine, a shielding ear is further disposed outside the nozzle mounting hole.
The technical scheme includes that the roller washing machine comprises an outer barrel and a shell, and further comprises a spraying system, wherein the spraying system comprises a water inlet pipeline, a circulating spraying pump and a water outlet pipeline which are sequentially connected, a water inlet of the water inlet pipeline is communicated with the outer barrel, a water outlet of the water outlet pipeline is also communicated with the outer barrel, and a filter and a differential pressure sensor are further arranged in the circulating spraying system; the circulating spray pump sucks washing water in the outer barrel through the water inlet pipeline and sends the washing water out through the water outlet pipeline, so that clothes are sprayed, the filter is used for filtering sundries in the washing water, the differential pressure sensor is used for detecting whether the filter is blocked or not, and the control method comprises the following steps:
s100, controlling a circulating spray pump to start;
s200, controlling a differential pressure sensor to detect the pressure difference on two sides of the filter;
s300, comparing the pressure difference with a set pressure difference;
and S400, selectively controlling the circulating spraying pump to continuously operate according to the comparison result.
Through the arrangement mode, the roller washing machine can solve the problem that the existing roller washing machine is poor in washing and rinsing effects through the spraying system, can detect the blockage of the filter in real time through the differential pressure sensor, finds and processes the blockage at the first time, and prevents the condition that the washing machine is not thoroughly washed under the condition that the spraying effect is poor, so that the washing and rinsing stability of the roller washing machine is further ensured.
Drawings
A control method of the drum washing machine of the present invention is described below with reference to the accompanying drawings. In the drawings:
FIG. 1 is a schematic structural view of one embodiment of a drum washing machine according to the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a flow chart of a control method of the drum washing machine of the present invention;
FIG. 4 is a schematic structural view of another embodiment of the drum washing machine according to the present invention;
fig. 5 is a flowchart of another control method of the drum washing machine of the present invention.
List of reference numerals:
1. a water inlet pipeline; 2. a circulating spray pump; 3. a water outlet pipeline; 31. a water supply pipe; 32. an annular cavity; 321. a nozzle; 4. a filter; 5. a differential pressure sensor; 6. sealing the window gasket; 7. an outer cylinder; 8. a housing; 91. a first opening/closing valve; 92. a second opening/closing valve; 93. a third opening and closing valve; 94. a fourth opening valve; 10. a water return pipe; 11. a drain pipe; 12. a filter disc.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, although the processor of the differential pressure sensor is described as a part of the controller of the washing machine itself, it is obvious that the processor may be a separate processor as long as the data processing function is realized.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring first to fig. 1 and 3, a control method of a drum washing machine of the present invention will be described.
As shown in fig. 1 and 3, in order to solve the problem of poor washing and rinsing effects of the existing drum washing machine, the drum washing machine of the present invention comprises an outer drum 7 and a shell 8, and further comprises a spraying system, wherein the spraying system comprises a water inlet pipeline 1, a circulating spraying pump 2 and a water outlet pipeline 3 which are connected in sequence, a water inlet of the water inlet pipeline 1 is communicated with the outer drum 7, a water outlet of the water outlet pipeline 3 is also communicated with the outer drum 7, and a filter 4 and a differential pressure sensor 5 are further arranged in the circulating spraying system; the circulating spray pump 2 sucks washing water in the outer barrel 7 through the water inlet pipeline 1 and sends the washing water out through the water outlet pipeline 3, so that clothes are sprayed, the filter 4 is used for filtering sundries in the washing water, the differential pressure sensor 5 is used for detecting whether the filter 4 is blocked or not, and the control method comprises the following steps:
s100, controlling a circulating spray pump to start;
s200, controlling a differential pressure sensor to detect the pressure difference on two sides of the filter;
s300, comparing the pressure difference with a set pressure difference;
and S400, selectively controlling the circulating spraying pump to continuously operate according to the comparison result.
The setting mode has the advantages that: through newly adding spraying system to drum type washing machine among the prior art washes, the relatively poor problem of rinsing effect has been solved, and, through increasing filter 4 and differential pressure sensor 5, thereby has further ensured spraying system's stable power, avoids because the problem of blockking up the spraying effect variation that causes.
The control method of the drum washing machine of the present invention will be described in detail with further reference to fig. 1 to 3.
As shown in fig. 3, in a possible implementation, step S400 specifically includes:
s410, controlling the circulating spray pump to stop running when the pressure difference is greater than or equal to the set pressure difference;
s420, starting a drainage program to drain the washing water in the drum washing machine;
and S430, sending alarm information to prompt a user to clean the filter.
Through the setting mode, the drum washing machine can judge the blocking degree of the filter 4, when the blocking degree exceeds the set value, the circulating spray pump 2 is firstly controlled to stop running, the drainage program is started, the washing water is emptied, the alarm information is sent again, the user is prompted to clear the filter 4, and when the filter 4 is cleaned, the situation that the washing water possibly flows out due to the fact that the filter 4 is cleared under the condition that the washing water exists in the drum washing machine is avoided. Of course, if the filter 4 is disposed at a position that does not cause the problems of the washing water flowing out, it is obvious that the user may be prompted to clean the filter 4 directly without starting the draining, or the filter 4 may be cleaned automatically, which are simple modifications of the present invention, and therefore, the present invention is within the protection scope of the present invention.
As shown in fig. 3, in another possible implementation, step S400 specifically includes:
and S440, controlling the circulating spraying system to continuously operate when the pressure difference is smaller than the set pressure difference.
If the pressure difference is displayed to be within the normal range, the filter 4 is not blocked at the moment, the spraying process does not need to be interfered at the moment, and the circulating spraying pump 2 is controlled to continue to operate.
The detailed structure of the drum washing machine used in the control method of the drum washing machine according to the present invention will be described with reference to fig. 1 and 2.
As shown in fig. 1 and 2, in a possible embodiment, the differential pressure sensor 5 comprises two pressure sensors (not shown) respectively arranged at two sides of the filter 4 and a processor (not shown) connected to the two pressure sensors in communication.
The processor may be a part of the controller unique to the washing machine itself, or may be a processor provided independently, as long as it can process data to determine whether or not the filter 4 is clogged. Of course, the differential pressure sensor 5 may be in other manners, for example, if the pressure in the entire spraying system is constant, the pressure difference between the front and the back of the filter 4 is not changed under the normal condition, and only the pressure behind the filter 4 is changed under the blocking condition, in such a case, it is obvious that the differential pressure sensor 5 is only a pressure sensor arranged behind the filter 4, and whether the filter 4 is blocked or not can be monitored in real time.
As shown in fig. 1 and 2, in another possible embodiment, the water outlet pipeline 3 includes a water supply pipe 31 and an annular cavity 32, one end of the water supply pipe 31 is communicated with the circulating spray pump 2, the other end is communicated with the annular cavity 32, the annular cavity 32 is fixed at the dispensing opening of the outer cylinder 7 or the housing 8 is close to the dispensing opening of the outer cylinder 7 (in fig. 1, the embodiment is fixed on the outer cylinder 7), a nozzle 321 is arranged on the annular cavity 32, and the nozzle 321 faces the inner side of the outer cylinder 7 (the nozzle 321 is shown in the figure to be less easy to see, but it can be associated that the nozzle 321 can be formed integrally with the annular cavity 32 or can be installed separately).
The drum washing machine further includes a sealing window gasket 6, the sealing window gasket 6 is fixed at a dispensing opening of the outer tub 7 or a dispensing opening of the outer casing 8 close to the outer tub 7 (fig. 1 shows an embodiment of being fixed on the outer tub 7), a nozzle mounting hole (not shown in the figure) is formed in the sealing window gasket 6, and the nozzle 321 is inserted into the nozzle mounting hole. The nozzle mounting hole has a diameter smaller than that of the nozzle 321, and covers all the nozzle 321 except the water jet, and a covering lug (not shown) is provided outside the nozzle mounting hole.
The arrangement mode has the advantages that the nozzles 321 can be arranged at any annular position of the throwing opening of the outer cylinder 7 through the design of the water supply pipe 31 and the annular cavity 32, so that certain part inside the outer cylinder 7 can be sprayed more pertinently, and the spraying can be realized more uniformly. Through the design of nozzle mounting hole, make nozzle 321 can insert in it, fixed more stable, avoided the clothing to break off disconnected condition with nozzle 321 in business turn over in-process, and will except that the water jet all cladding in other places through the nozzle mounting hole, then can avoid nozzle 321 to be broken off disconnected problem with the fingers and thumb more, in addition, if nozzle 321 chooses for use for the metal nozzle, then can also make the nozzle 321 outside avoid the erosion of washing water, rust-resistant better. The diameter of the nozzle mounting hole is made smaller than that of the nozzle 321, and seamless fit between the nozzle 321 and the nozzle mounting hole is realized, thereby preventing leakage of washing water. The outer side of the nozzle mounting hole is also provided with a shielding ear, so that the nozzle 321 is prevented from spraying obliquely and then directly spraying towards a user, and clothes can not be close to the nozzle 321.
Particularly, the circulating spray pump 2 of the invention can also be combined with a drainage pump of a washing machine into a whole, so that the circulating spray pump 2 can realize forward rotation drainage and reverse rotation circulation. The filter 4 of the invention is integrated in the pump housing of the circulation pump in fig. 1, which saves more installation space.
Another embodiment of the control method of a drum washing machine according to the present invention will be described with reference to fig. 1, 4 and 5.
As shown in fig. 4, the drum washing machine of the present invention may also be configured such that, based on the configuration of the drum washing machine shown in fig. 1, the filter 4 is selected to be a filter having a self-cleaning capability to perform a filtering function when the water flow moves in the direction of the flow of the spray, and to perform self-cleaning when the water flow moves in the direction opposite to the direction of the flow of the spray; a first on-off valve 91 is provided in the water supply pipe 31, and a second on-off valve 92 is provided in the water inlet pipe 1; the spraying system also comprises a water return pipe 10, one end of the water return pipe 10 is communicated with a part of the water feeding pipe 31 between the first on-off valve 91 and the circulating spraying pump 2, and the other end is communicated with a part of the water inlet pipeline 1 between the second on-off valve 92 and the outer cylinder 7; the water return pipe 10 is also provided with a third opening and closing valve 93 and a filter 12; the drum washing machine further comprises a drain pipe 11, the drain pipe 11 is communicated with the water inlet pipeline 1 between the second opening and closing valve 92 and the circulating spraying pump 2, and a fourth opening and closing valve 94 is further arranged on the drain pipe 11;
the control method of the drum washing machine of the present invention may also be as shown in fig. 5:
s100, controlling a circulating spray pump to start;
s200, controlling a differential pressure sensor to detect the pressure difference on two sides of the filter;
s300, comparing the pressure difference with a set pressure difference;
s450, when the pressure difference is larger than or equal to the set pressure difference, closing the first opening and closing valve and the second opening and closing valve, and opening the third opening and closing valve and the fourth opening and closing valve;
and S460, controlling the circulating spray pump to reversely pump water.
The specific working process is as follows: since the first and second opening/ closing valves 91 and 92 are closed and the third and fourth opening/ closing valves 93 and 94 are opened, the washing water flows into the return pipe 10 through the water inlet pipe 1 and then into the water supply pipe 31 to the circulation shower pump 2, and since the flow direction is reversed, the foreign materials in the filter 4 can be cleaned and finally discharged out of the washing machine through the water discharge pipe 11. Of course, the washing machine of this embodiment has the same configuration and operation principle as the first washing machine shown in fig. 1 when the first on-off valve 91 and the second on-off valve 92 are open and the third on-off valve 93 and the fourth on-off valve 94 are closed.
Through the scheme, the automatic cleaning device realizes the self-cleaning of the filter 4 through the reverse flow direction when the pressure difference is detected to be greater than or equal to the set pressure difference, namely the filter 4 is blocked, by reasonable pipeline layout and by combining control of opening and closing of the opening and closing valve and the water pumping direction of the circulating spraying pump 2, so that the self-cleaning of the filter 4 is realized without cleaning by a user, and the washing machine is more automatic. In addition, a filter 12 is added to prevent impurities from entering the water supply pipe, thereby ensuring the cleanness of the nozzle 321. It should be noted that the filter 4 capable of forward filtering and reverse self-cleaning provided by the present invention has various forms, for example, a mesh flat plate filter can also realize forward impurity interception and reverse flushing, and in order to make the effect better, one side of the mesh flat plate filter can also be formed by a plurality of protrusions similar to combs, so that the filtering effect of one end is better, and the filter can be cleaned more easily during reverse flushing.
It should be noted that the above-mentioned embodiments are only used for illustrating the principle of the present invention, and are not intended to limit the protection scope of the present invention, and those skilled in the art can modify the above-mentioned structure so that the present invention can be applied to more specific application scenarios without departing from the principle of the present invention.
Those skilled in the art will appreciate that the drum washing machine described above may also include other known structures such as a processor, a controller, a memory, etc., wherein the memory includes, but is not limited to, ram, flash, rom, prom, volatile memory, non-volatile memory, serial memory, parallel memory or registers, etc., and the processor includes, but is not limited to, CPLD/FPGA, DSP, ARM processor, MIPS processor, etc. Such well-known structures are not shown in the drawings in order to not unnecessarily obscure embodiments of the present disclosure.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A control method of a roller washing machine comprises an outer barrel and a shell, and is characterized in that the roller washing machine further comprises a spraying system, the spraying system comprises a water inlet pipeline, a circulating spraying pump and a water outlet pipeline which are sequentially connected, a water inlet of the water inlet pipeline is communicated with the outer barrel, a water outlet of the water outlet pipeline is also communicated with the outer barrel, and a filter and a differential pressure sensor are further arranged in the circulating spraying system; the circulating spray pump sucks washing water in the outer barrel through the water inlet pipeline and sends the washing water out through the water outlet pipeline, so that clothes are sprayed, the filter is used for filtering sundries in the washing water, the differential pressure sensor is used for detecting whether the filter is blocked or not, and the control method comprises the following steps:
controlling the circulating spray pump to start;
controlling the differential pressure sensor to detect a pressure difference across the filter;
comparing the pressure difference with a set pressure difference;
and selectively controlling the circulating spray pump to continue to operate according to the comparison result.
2. The control method of a drum washing machine according to claim 1, wherein the step of selectively controlling the circulation spray pump to continue to operate according to the comparison result specifically comprises:
and when the pressure difference is greater than or equal to the set pressure difference, controlling the circulating spray pump to stop running.
3. The control method of a drum washing machine according to claim 2, characterized in that after the step of controlling the circulation spray pump to stop operating when the pressure difference is greater than or equal to a set pressure difference, the control method further comprises:
starting a drainage program to drain the washing water in the drum washing machine;
and sending alarm information to prompt a user to clean the filter.
4. The control method of a drum washing machine according to claim 1, wherein the step of selectively controlling the circulation spray pump to continue to operate according to the comparison result specifically comprises:
and when the pressure difference is smaller than the set pressure difference, controlling the circulating spray pump to continuously operate.
5. A drum washing machine control method according to any one of claims 1-4, characterized in that the differential pressure sensor comprises two pressure sensors and a processor, the two pressure sensors are respectively arranged at two sides of the filter, and the processor is connected with the two pressure sensors in communication.
6. The control method of the drum washing machine according to claim 1, characterized in that the water outlet pipeline comprises a water supply pipe and an annular cavity, one end of the water supply pipe is communicated with the circulating spray pump, the other end of the water supply pipe is communicated with the annular cavity, the annular cavity is fixed at a throwing port of the outer drum or the shell is close to the throwing port of the outer drum, and the annular cavity is provided with a nozzle which faces to the inner side of the outer drum.
7. The control method of a drum washing machine according to claim 6, characterized in that the filter is a self-cleaning filter which realizes a filtering function when the water flow moves in the direction of the flow of the spray and realizes self-cleaning when the water flow moves in the reverse direction of the flow of the spray;
a first open-close valve is arranged on the water supply pipe, and a second open-close valve is arranged on the water inlet pipeline;
the spraying system also comprises a water return pipe, one end of the water return pipe is communicated with a part of the water feeding pipe between the first open-close valve and the circulating spraying pump, and the other end of the water return pipe is communicated with a part of the water inlet pipeline between the second open-close valve and the outer cylinder;
the water return pipe is also provided with a third opening and closing valve and a filter disc;
the drum washing machine further comprises a drain pipe, the drain pipe is communicated with the water inlet pipeline between the second opening and closing valve and the circulating spray pump, and a fourth opening and closing valve is further arranged on the drain pipe;
the step of selectively controlling the circulating spray pump to continue to operate according to the comparison result further comprises the following steps:
when the pressure difference is equal to or greater than a set pressure difference, closing the first opening/closing valve and the second opening/closing valve, and opening the third opening/closing valve and the fourth opening/closing valve;
and controlling the circulating spray pump to reversely pump water.
8. The control method of a drum washing machine according to claim 6, characterized in that the drum washing machine further comprises a sealing window gasket fixed at the dispensing opening of the tub or at a position of the casing close to the dispensing opening of the tub, the sealing window gasket being provided with nozzle mounting holes into which the nozzles are inserted.
9. The control method of a drum washing machine according to claim 8, characterized in that the diameter of the nozzle mounting hole is smaller than the diameter of the nozzle; and/or the like and/or,
the nozzle mounting hole covers the nozzle except the water jet.
10. The control method of a drum washing machine according to claim 8, characterized in that the outside of the nozzle mounting hole is further provided with a shielding ear.
Priority Applications (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024027744A1 (en) * | 2022-08-02 | 2024-02-08 | 青岛海尔洗衣机有限公司 | Control method for washing device, and washing device |
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Effective date of registration: 20240408 Address after: 266101 south of Tuanjie road and west of zonger Road, Huangdao District, Qingdao City, Shandong Province Applicant after: QINGDAO HAIER WASHING ELECTRIC APPLIANCES Co.,Ltd. Country or region after: China Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd. Country or region before: China Applicant before: Haier Zhijia Co.,Ltd. |