CN113550115B - Control method of drum washing machine - Google Patents
Control method of drum washing machine Download PDFInfo
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- CN113550115B CN113550115B CN202010339255.6A CN202010339255A CN113550115B CN 113550115 B CN113550115 B CN 113550115B CN 202010339255 A CN202010339255 A CN 202010339255A CN 113550115 B CN113550115 B CN 113550115B
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- filter
- flow
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- 238000005406 washing Methods 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 121
- 239000007921 spray Substances 0.000 claims abstract description 44
- 238000005507 spraying Methods 0.000 claims abstract description 41
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 13
- 238000011010 flushing procedure Methods 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract 1
- 230000006870 function Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 210000003811 finger Anatomy 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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
- 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
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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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/10—Filtering arrangements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
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 of poor flushing and rinsing effects of the conventional drum washing machine. For this purpose, the drum washing machine of the invention 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 connected in sequence, and a filter and a flow 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 out the washing water through the water outlet pipeline, so that the spraying of clothes is completed, and the control method comprises the following steps: controlling the start of the circulating spray pump; controlling a flow sensor to detect the flow rate of the fluid flowing through the filter in a unit time; comparing the flow with a set flow; and selectively controlling the circulating spray pump to continue to operate according to the comparison result. The method can find and process the blocking 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 of beating clothes by hammering a rod, the drum is rotated by utilizing the mechanical work of a motor, the clothes are continuously lifted and fallen in the drum, then lifted and fallen again, repeated motion is carried out, and the clothes are washed cleanly under the combined action of washing powder and water. The general drum type washing machine saves water by only 1/3 or more than the pulsator type washing machine.
Because the drum is used for washing clothes by beating, the water quantity in the drum is less, the effects of washing and rinsing the clothes by water flow are poor, and the running time or the rinsing times of the drum washing machine are required to be increased in order to improve the washing and rinsing effects. These inevitably cause problems such as an increase in power consumption, an extension in washing time, and the like, which are undesirable to 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 problems in the prior art, namely to solve the problem of poor flushing and rinsing effects of the conventional drum washing machine, the invention provides a control method of the drum washing machine, wherein the drum washing machine comprises an outer drum and a shell, and is characterized by further comprising 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 drum, a water outlet of the water outlet pipeline is also communicated with the outer drum, and a filter and a flow sensor are further 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 spraying of clothes is completed, the filter is used for filtering sundries in the washing water, the flow sensor is used for detecting whether the filter is blocked, and the control method comprises the following steps:
Controlling the start of the circulating spray pump;
Controlling the flow rate of the filter flowing through the flow sensor in a unit time;
comparing the flow with a set flow;
And selectively controlling the circulating spray pump to continue to operate according to the comparison result.
In the preferred technical scheme of the control method of the drum washing machine, the step of selectively controlling the circulation spray pump to continue to operate according to the comparison result specifically includes:
and when the flow is smaller than or equal to the set flow, controlling the circulating spray pump to stop running.
In a preferred technical solution of the control method of a drum washing machine, after the step of controlling the circulation spray pump to stop operating when the flow rate is equal to or less than the set flow rate, the control method further includes:
Starting a drainage program to drain the washing water in the drum washing machine;
and sending out alarm information to prompt a user to clean the filter.
In the preferred technical scheme of the control method of the drum washing machine, the step of selectively controlling the circulation spray pump to continue to operate according to the comparison result specifically includes:
And when the flow is larger than the set flow, controlling the circulating spraying system to continue to operate.
In the preferred technical scheme of the control method of the drum washing machine, the flow sensor comprises a vortex street flow sensor and a processor, wherein the vortex street flow sensor is arranged on one side of the filter, and the processor is in communication connection with the vortex street flow sensor.
In the 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 the throwing opening of the outer drum or the throwing opening of the outer shell, which is close to the outer drum, a nozzle is arranged on the annular cavity, and the nozzle faces the inner side of the outer drum.
In the preferable technical scheme of the drum washing machine, the filter is a filter with self-cleaning capability, wherein the filter is used for realizing a filtering function when water flows move along the direction of spraying and realizing self-cleaning when the water flows reversely along the direction of spraying; a first on-off valve is arranged on the water supply pipe, and a second on-off valve is arranged on the water inlet pipe; the spraying system further comprises a water return pipe, one end of the water return pipe is communicated with part of the water supply pipe between the first opening and closing valve and the circulating spraying pump, and the other end of the water return pipe is communicated with part of the water inlet pipeline between the second opening and closing valve and the outer cylinder; a third opening and closing valve and a filter plate are also arranged on the water return pipe; the drum washing machine further comprises a drain pipe, wherein 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 circulation spray pump to continue to operate according to the comparison result" further includes:
When the flow rate is equal to or less than a set flow rate, closing the first and second opening/closing valves, and opening the third and fourth opening/closing valves;
And controlling the circulating spray pump to pump water reversely.
In the preferred technical scheme of the control method of the drum washing machine, the drum washing machine further comprises a sealing window pad, wherein the sealing window pad is fixed at the throwing opening of the outer drum or the throwing opening of the outer shell, which is close to the outer drum, a nozzle mounting hole is formed in the sealing window pad, and the nozzle is inserted into the nozzle mounting hole.
In a preferred technical scheme 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 nozzle mounting holes entirely cover the other parts of the nozzle except the water jet.
In the preferred technical scheme of the control method of the drum washing machine, an ear is further arranged on the outer side of the nozzle mounting hole.
As can be appreciated by those skilled in the art, in the technical scheme of the invention, the drum washing machine comprises an outer drum and a shell, 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 sequentially connected, 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 flow sensor are further 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 out through the water outlet pipeline, thus finish spraying the clothes, the filter is used for filtering the debris in the washing water, the flow sensor is used for detecting whether the filter is blocked, the control method includes:
s100, controlling the start of a circulating spray pump;
s200, controlling the flow sensor to detect the flow rate of the flow passing through the filter in unit time;
S300, comparing the flow with a set flow;
and S400, selectively controlling the circulating spray pump to continue to operate according to the comparison result.
Through the arrangement mode, the problem that the washing and rinsing effects of the conventional drum washing machine are poor can be solved through the spraying system, the blocking problem of the filter can be detected in real time through the flow sensor, the blocking problem is discovered and treated in the first time, the condition that the washing of the drum washing machine is not thorough under the condition of poor spraying effects is prevented, and therefore the stability of washing and rinsing of the drum washing machine is further ensured.
Drawings
The control method of the drum washing machine of the present invention will be described with reference to the accompanying drawings. In the accompanying drawings:
fig. 1 is a schematic view of a drum washing machine according to an embodiment of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a flowchart of a control method of the drum washing machine of the present invention;
Fig. 4 is a schematic view illustrating a structure of another embodiment of a 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 flow 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/closing valve; 94. a fourth opening/closing valve; 10. a water return pipe; 11. a drain pipe; 12. a filter sheet.
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 merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. Those skilled in the art can adapt it as desired to suit a particular application. For example, although the flow sensor processor is described in the specification as 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, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate directions or positional relationships 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 apparatus or elements 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 explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
First, a control method of the drum washing machine of the present invention will be described with reference to fig. 1 and 3.
As shown in fig. 1 and 3, in order to solve the problem of poor flushing and rinsing effects of the conventional drum washing machine, the drum washing machine 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 sequentially connected, 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 flow sensor 5 are further arranged in the circulating spraying system; the circulating spray pump 2 sucks the washing water in the outer barrel 7 through the water inlet pipeline 1 and sends out through the water outlet pipeline 3, thereby completing the spraying of clothes, the filter 4 is used for filtering sundries in the washing water, the flow sensor 5 is used for detecting whether the filter 4 is blocked, and the control method comprises the following steps:
s100, controlling the start of a circulating spray pump;
s200, controlling the flow sensor to detect the flow rate of the flow passing through the filter in unit time;
S300, comparing the flow with a set flow;
and S400, selectively controlling the circulating spray pump to continue to operate according to the comparison result.
The above arrangement has the advantages that: the novel spray system is additionally arranged, so that the problem of poor flushing and rinsing effects of the drum washing machine in the prior art is solved, and stable power of the spray system is further ensured by adding the filter 4 and the flow sensor 5, and the problem of poor spray effect caused by blockage is avoided.
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 one possible implementation, step S400 specifically includes:
s410, when the flow is smaller than or equal to the set flow, controlling the circulating spray pump to stop running;
S420, starting a drainage program, and draining washing water in the drum washing machine;
s430, sending out 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 flow is smaller than the set flow, the circulating spray pump 2 is firstly controlled to stop running, a drainage program is started, washing water is emptied, alarm information is sent out, a user is prompted to clean the filter 4, and the situation that washing water possibly flows out when the filter 4 is cleaned under the condition that the washing water exists in the drum washing machine is avoided. Of course, if the installation position of the filter 4 does not cause the problem of outflow of the washing water, it is obvious that the drainage may not be started, and the user may be reminded to clean the filter 4 directly or clean the filter 4 automatically, which are simple modifications of the present invention, and therefore, all are within the protection scope of the present invention.
As shown in fig. 3, in another possible embodiment, step S400 specifically includes:
s440, when the flow is larger than the set flow, the circulating spray system is controlled to continue to operate.
If the flow is within the normal range, the filter 4 is not blocked at the moment, no intervention is needed in the spraying process, and the circulating spray 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 of the present invention will be described with reference to fig. 1 and 2.
As shown in fig. 1 and 2, in one possible embodiment, the flow sensor 5 comprises a vortex street flow sensor (not shown in the figures) arranged on one side of the filter 4 and a processor (not shown in the figures) in communication with the vortex street flow sensor, i.e. a vortex street flow meter, which is a conventional volumetric flow meter, which is of the prior art and therefore not described in detail.
The processor may be a part of a controller inherent to the washing machine itself, or may be a separately provided processor, as long as it is capable of processing data to determine whether the filter 4 is clogged. Of course, the flow sensor 5 may be other types of flow sensors, such as vane type.
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 delivery opening of the outer barrel 7 or the position of the outer shell 8 near the delivery opening of the outer barrel 7 (in fig. 1, the embodiment fixed on the outer barrel 7), a nozzle 321 is arranged on the annular cavity 32, the nozzle 321 faces the inner side of the outer barrel 7 (the nozzle 321 is shown as being smaller and is not easy to see in the drawing, but it can be associated that the nozzle 321 can be formed integrally with the annular cavity 32 or can be separately installed).
The drum washing machine further includes a sealing window gasket 6, the sealing window gasket 6 is fixed at a delivery opening of the outer tub 7 or a delivery opening of the outer tub 7 near the outer casing 8 (in fig. 1, an embodiment fixed on the outer tub 7), a nozzle mounting hole (not shown) is provided on the sealing window gasket 6, and the nozzle 321 is inserted into the nozzle mounting hole. The diameter of the nozzle mounting hole is smaller than that of the nozzle 321, and the nozzle mounting hole entirely covers the other parts of the nozzle 321 except the water jet, and an ear shield (not shown) is provided outside the nozzle mounting hole.
The advantage of the above arrangement is that, through the design of the water supply pipe 31 and the annular cavity 32, the nozzle 321 can be installed at any annular position at the delivery opening of the outer cylinder 7, so that a certain part inside the outer cylinder 7 can be sprayed more forcefully, and the spraying can be realized more uniformly. Through the design of nozzle mounting hole, make nozzle 321 can insert in it, it is more stable to fix, avoided the clothing to break off the condition with the fingers and thumb of nozzle 321 in business turn over in-process, and will all wrap up other places except the water jet through the nozzle mounting hole, then can avoid the problem that nozzle 321 was broken off with the fingers and thumb more, in addition, if nozzle 321 selects for the metal nozzle, can also make the nozzle 321 outside avoid the erosion of washing water, rust-resistant better. The diameter of the nozzle mounting hole is smaller than that of the nozzle 321, so that the seamless matching of the nozzle 321 and the nozzle mounting hole is realized, and the leakage of washing water is avoided. The outer side of the nozzle mounting hole is also provided with a shielding lug, so that the nozzle 321 is prevented from being sprayed towards a user directly after being askew, and clothes cannot be close to the nozzle 321.
In particular, the circulation shower pump 2 of the present invention may be integrated with a drain pump of a washing machine, so that the circulation shower pump 2 can perform forward rotation drain and reverse rotation circulation. The filter 4 of the invention is integrated inside the pump housing of the circulation pump in fig. 1, which saves more installation space.
A specific embodiment of another control method of the drum washing machine of 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 be constructed such that, based on the construction of the drum washing machine shown in fig. 1, the filter 4 is selected to have a filtering function when the water flow moves in the direction of the spray flow, and a self-cleaning function when the water flow moves in the reverse direction of the spray flow; the water pipe 31 is provided with a first on-off valve 91, and the water pipe 1 is provided with a second on-off valve 92; the spraying system further comprises a water return pipe 10, one end of the water return pipe 10 is communicated with a part of water supply pipe 31 between the first on-off valve 91 and the circulating spraying pump 2, and the other end of the water return pipe is communicated with a part of water supply pipeline 1 between the second on-off valve 92 and the outer cylinder 7; the return pipe 10 is further provided with a third on-off 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 on-off valve 92 and the circulating spray pump 2, and a fourth on-off 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 the start of a circulating spray pump;
s200, controlling the flow sensor to detect the flow rate of the flow passing through the filter in unit time;
S300, comparing the flow with a set flow;
S450, when the flow rate is smaller than or equal to the set flow rate, 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;
S460, controlling the circulating spray pump to pump water reversely.
The specific working process is as follows: since the first and second on-off valves 91 and 92 are closed and the third and fourth on-off valves 93 and 94 are opened, the washing water flows into the return pipe 10 via the water inlet pipe 1 and then flows into the water feed pipe 31 to enter the circulation shower pump 2, and impurities of the filter 4 can be cleaned while reversing the flow direction, and finally the impurities are discharged out of the washing machine through the water discharge pipe 11. Of course, the washing machine of this embodiment is similar to the first washing machine in fig. 1 in structure and operation principle in the case where the first on-off valve 91 and the second on-off valve 92 are opened and the third on-off valve 93 and the fourth on-off valve 94 are closed.
Through the scheme, the self-cleaning of the filter 4 is realized through the reverse flow direction when the flow rate is detected to be less than or equal to the set flow rate, namely, the filter 4 is blocked through the reasonable pipeline layout and the combination of controlling the opening and closing of the opening and closing valve and the water pumping direction of the circulating spray pump 2, so that the self-cleaning of a user is not needed, and the washing machine is more automatic. In addition, a filter 12 is added to ensure that no foreign matter enters the water supply pipe, thereby ensuring the cleaning of the nozzle 321. It should be noted that, the filter 4 capable of forward filtering and reverse self-cleaning is various in forms, for example, a single net-shaped flat plate filter can also be used for forward intercepting sundries and reverse flushing, and of course, in order to make the effect better, one side of the net-shaped flat plate filter can also be formed by a plurality of comb-shaped protrusions, so that the filtering effect of one end is better, and the filter is easier to clean during reverse flushing.
It should be noted that the above-mentioned embodiments are merely for illustrating the principles of the present invention, and are not intended to limit the scope of the invention, and those skilled in the art can modify the above-mentioned structure to apply the present invention to more specific application scenarios without departing from the principles of the present invention.
It will be appreciated by those skilled in the art that the drum washing machine described above may also include some other well-known structure, such as a processor, a controller, a memory, etc., wherein the memory includes, but is not limited to, a random access memory, a flash memory, a read-only memory, a programmable read-only memory, a volatile memory, a non-volatile memory, a serial memory, a parallel memory, or a register, etc., and the processor includes, but is not limited to, a CPLD/FPGA, DSP, ARM processor, a MIPS processor, etc. These well-known structures are not shown in the drawings in order to not unnecessarily obscure the embodiments of the disclosure.
Thus far, the technical solution of the present invention has 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 protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (6)
1. The control method of 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 sequentially connected, 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 flow sensor are further arranged in the 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 spraying of clothes is completed, the filter is used for filtering sundries in the washing water, the flow sensor is used for detecting whether the filter is blocked, and the control method comprises the following steps:
Controlling the start of the circulating spray pump;
Controlling the flow rate of the filter flowing through the flow sensor in a unit time;
comparing the flow with a set flow;
Selectively controlling the circulating spray pump to continue to operate according to the comparison result;
The water outlet pipeline comprises a water delivery pipe and an annular cavity, one end of the water delivery pipe is communicated with the circulating spray pump, the other end of the water delivery pipe is communicated with the annular cavity, the annular cavity is fixed at the throwing opening of the outer cylinder or the throwing opening of the outer cylinder, which is close to the outer cylinder, a nozzle is arranged on the annular cavity, and the nozzle faces the inner side of the outer cylinder;
the filter has a self-cleaning capability, and is capable of realizing a filtering function when water flows move along the direction of the spraying flow and realizing self-cleaning when the water flows reversely move along the direction of the spraying flow;
a first on-off valve is arranged on the water supply pipe, and a second on-off valve is arranged on the water inlet pipe;
The spraying system further comprises a water return pipe, one end of the water return pipe is communicated with part of the water supply pipe between the first opening and closing valve and the circulating spraying pump, and the other end of the water return pipe is communicated with part of the water inlet pipeline between the second opening and closing valve and the outer cylinder;
a third opening and closing valve and a filter plate are also arranged on the water return pipe;
The drum washing machine further comprises a drain pipe, wherein 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 circulation spray pump to continue to operate according to the comparison result" further includes:
When the flow rate is equal to or less than a set flow rate, closing the first and second opening/closing valves, and opening the third and fourth opening/closing valves;
And controlling the circulating spray pump to pump water reversely.
2. The method of controlling a drum washing machine as claimed in claim 1, wherein the step of selectively controlling the circulation spray pump to continue to operate according to the comparison result comprises:
And when the flow is larger than the set flow, controlling the circulating spray pump to continue to operate.
3. A control method of a drum washing machine according to claim 1 or 2, wherein the flow sensor includes a vortex street flow sensor provided at one side of the filter and a processor communicatively connected to the vortex street flow sensor.
4. The control method of a drum washing machine according to claim 1, further comprising a sealing window gasket fixed at the delivery opening of the outer tub or the delivery opening of the outer case near the outer tub, wherein a nozzle mounting hole is provided on the sealing window gasket, and the nozzle is inserted into the nozzle mounting hole.
5. The control method of the drum washing machine as claimed in claim 4, wherein the nozzle mounting hole has a diameter smaller than that of the nozzle; and/or
The nozzle mounting holes entirely cover the other parts of the nozzle except the water jet.
6. The control method of a drum washing machine as claimed in claim 1, wherein an outer side of the nozzle mounting hole is further provided with a shield.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN109912089A (en) * | 2019-03-28 | 2019-06-21 | 武汉理工大学 | Washing machine inner loop pipeline |
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| JP5140050B2 (en) * | 2009-09-14 | 2013-02-06 | 日立アプライアンス株式会社 | Drum washing machine |
| EP2455533B1 (en) * | 2010-11-22 | 2014-06-18 | Electrolux Home Products Corporation N.V. | Method of operating a washing machine and washing machine |
| CN104060439B (en) * | 2013-03-18 | 2017-09-29 | 海尔集团技术研发中心 | The control method of washing machine and washing machine |
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| CN104060435A (en) * | 2013-03-18 | 2014-09-24 | 海尔集团技术研发中心 | Washing control method and washing machine |
| CN110387712A (en) * | 2018-04-16 | 2019-10-29 | 青岛海尔滚筒洗衣机有限公司 | Roller washing machine and its spray system |
| CN109912089A (en) * | 2019-03-28 | 2019-06-21 | 武汉理工大学 | Washing machine inner loop pipeline |
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| WO2021218557A1 (en) | 2021-11-04 |
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Effective date of registration: 20240418 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 Smart Home 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 Smart Home Co., Ltd. |
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