CN107460694B - Washing and drying machine and operation method thereof - Google Patents
Washing and drying machine and operation method thereof Download PDFInfo
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- CN107460694B CN107460694B CN201610395427.5A CN201610395427A CN107460694B CN 107460694 B CN107460694 B CN 107460694B CN 201610395427 A CN201610395427 A CN 201610395427A CN 107460694 B CN107460694 B CN 107460694B
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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
- D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air
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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
- D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
- D06F33/52—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/68—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of the sequence of washing and drying operations
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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
- D06F2103/18—Washing liquid level
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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
- D06F2103/28—Air properties
- D06F2103/36—Flow or velocity
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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
- D06F2105/02—Water supply
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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
- D06F2105/08—Draining of washing liquids
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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
- D06F2105/16—Air properties
- D06F2105/24—Flow or velocity
-
- 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
- D06F2105/30—Blowers
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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
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/24—Condensing arrangements
Abstract
A washing and drying machine comprises an outer barrel for containing water in a washing program, an inner barrel for containing clothes and rotatably arranged in the outer barrel, a condensation channel communicated with the outer barrel in a fluid mode, and a fan connected with the downstream of the condensation channel in the air circulation direction. The fan is controlled by the control device to realize different rotating speeds. The detection device for detecting the parameter related to the water level in the outer barrel is in communication connection with the control device. The method of operating the washer-dryer includes: the condensation duct flushing process is operated during the operation of the washing program.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a washer-dryer with a condensation channel and to a method for operating the washer-dryer, in which the condensation channel can be flushed.
[ background of the invention ]
A washing and drying machine having both washing and drying functions generally has a drying process air path. The laundry is heated by the drying process air in this path and takes away moisture. The process air passage includes a drying chamber accommodating the laundry, a condensing passage communicating with the drying chamber, a fan promoting flow of the process air, and a heating passage heating the air. The drying chamber generally includes an outer tub and an inner tub rotatable within the outer tub. The outer barrel is communicated with the inner barrel. In the drying procedure, the process air enters the drying chamber from the heating channel under the driving of the fan, contacts with the damp clothes in the drying chamber, evaporates the moisture in the clothes and forms high-temperature and high-humidity process air. The high temperature and high humidity process air enters the condensing channel, and the moisture in the process air is separated out in the condensing channel. The process air after leaving the condensing channel then enters the air heating channel again, and the operation is repeated in a circulating way.
During the drying course, the inner tub is rotated at a certain rhythm and rotation speed, thereby moving the laundry in the inner tub. The friction of the clothing during movement causes some of the fine textile fibers or fluff to separate from the clothing and follow the air flow into the condensation path and downstream thereof. The place where these fluff accumulates most is often the inner wall of the condensation channel. The result not only includes that the fluff covers the sensor in the condensation channel, so that the control precision is reduced, but also the fluff gathered in a large quantity increases the air circulation resistance, reduces the unit flow of the air, and further reduces the drying efficiency.
Chinese patent publication No. CN101988260B discloses cleaning of a condensation duct by intermittently driving a blowing device such that a liquid level in a laundry washing apparatus is raised and intermittent shaking is generated. This cleaning method is effective, especially in the lower part of the condensation channel, especially in the areas where the pile accumulation is most severe, such as near the inlet area. But the patent does not disclose a cleaning solution countermeasure at different water levels. When the condensation channel is cleaned, if the water level in the outer barrel is higher than the condensation channel inlet, the condensation channel inlet and the outer barrel are separated by water, even if the fan is started, the liquid level is difficult to drive to shake or climb in the condensation channel due to high wind resistance, so that the cleaning effect cannot be achieved, and the electric energy required by driving the fan is wasted; if the water level in the outer barrel is lower than the inlet of the condensation channel, the air flow hardly brings the water in the outer barrel into the condensation channel, so that the cleaning effect cannot be achieved, and the electric energy is wasted. In addition, even if the water level in the outer tub is between the inlets of the condensing passages, the same fan speed has different effects for different water levels. The same fan speed may have the right water lifting effect for lower water levels, while for higher water levels the water may be introduced directly into the heating channel; if there is a proper water lifting effect for a higher water level, and a lower water level, the lifting force is insufficient, and a sufficient washing effect cannot be achieved.
[ summary of the invention ]
It is an object of the present invention to overcome or reduce the above-mentioned drawbacks of the prior art and to provide an effective cleaning of the fluff in the condensation channels while avoiding energy waste.
In view of the above objects, the present invention provides a method of operating a washing and drying machine comprising an outer tub for holding water during a washing process, an inner tub for holding laundry and rotatably disposed within the outer tub, a condensing passage in fluid communication with the outer tub, the condensing passage being connected downstream in an air flow direction to a fan. The fan is controlled by the control device to realize different rotating speeds. The detection device for detecting the parameter related to the water level in the outer barrel is in communication connection with the control device. The operation method comprises the following steps:
running a condensation channel flushing process in the course of running the washing program;
wherein the condensation channel flushing process comprises:
the detection device detects parameters related to the water level in the outer barrel;
the control device determines whether to start the fan and the rotating speed of the fan according to the difference of the parameter information detected by the detection device.
Because the condensing channel washes the process and moves at the operation in-process of washing procedure, the washing procedure can have the different water level of intaking according to clothing volume or different clothing materials etc. of difference, confirms the operation mode of fan more nimble according to the difference of water level, overcomes the not enough that exists among the background art, avoids extravagant electric energy, can realize more effectual washing simultaneously.
Specifically, the parameter information detected by the detecting device is corresponding to the water level in the outer barrel, and the fan is not started when the corresponding water level exceeds the highest limit water level or is lower than the lowest limit water level. The method for detecting the parameter information corresponding to the water level in the outer barrel by the detection device may be calculating the water level in the outer barrel according to the detected parameter information; or the water level in the outer barrel is converted into the parameter information which can be detected by the detection device in a reverse direction, for example, the highest limit water level and the lowest limit water level are converted into two corresponding critical detection parameter values, and when the detected parameter values exceed or are lower than the critical parameter values, the fan is not started. If the parameter information detected by the detection device is water level information, the parameter information directly corresponds to the water level in the outer barrel, and calculation or reverse conversion is not needed.
Wherein the highest defined water level is lower than the top of the condensation channel inlet; the lowest defined water level is higher than the bottom of the condensation channel inlet.
Preferably, at least two water level intervals are arranged between the highest defined water level and the lowest defined water level, the at least two water level intervals comprise a first water level interval and a second water level interval, wherein the first water level interval is higher than the second water level interval, when the corresponding water level is located in the first water level interval, the control device controls the fan to rotate at a first rotating speed, and when the corresponding water level is located in the second water level interval, the control device controls the fan to rotate at a second rotating speed, wherein the first rotating speed is lower than the second rotating speed. The rotating speed of the fan is set because when the water level is high, the ventilation area at the inlet of the condensation channel is small, the driving force of wind to water is large, and the water at the inlet of the condensation channel can be well lifted at a low wind speed; on the contrary, when the water level is lower, the wind speed required for lifting the water to the same height to wash the inner wall of the condensation channel is higher. In addition, it is also possible to provide more water level intervals between the highest defined water level and the lowest defined water level.
In a further aspect of the invention, the control means is adapted to intermittently switch the fan on and off at a predetermined frequency when the corresponding water level is between a maximum defined water level and a minimum defined water level. Intermittent turning on and off of the fan at a predetermined frequency causes the water level in the condensation duct to rise and fall continuously, thereby achieving a better flushing effect.
In addition, there is an improvement that the control means starts the fan and operates it for a certain time to finish the flushing process of the condensation path when the corresponding water level is between the highest defined water level and the lowest defined water level. When the fan continuously operates, the fan continuously lifts the water surface in the condensation channel to a certain height, and the water can drop and is lifted again after falling because the gravity of the water reaches the critical value of the lifting force of the fan, so that the flushing effect can be played on the condensation channel.
In order to ensure that the condensation channel can be flushed, when the corresponding water level exceeds the highest limited water level, the control device starts a drainage pump of the washing and drying machine, so that when the corresponding water level at least reaches or is lower than the highest limited water level, the drainage pump stops working and starts a fan; when the corresponding water level is lower than the lowest limit water level, the control device opens the water valve to feed water into the outer barrel, so that the corresponding water level at least reaches or is higher than the lowest limit water level, the water valve is closed, and the fan is started.
Preferably, the washing program includes a rinsing process during which the condensing channel washing process is performed.
Wherein the washing program includes a plurality of rinsing processes, and the condensing passage washing process may be performed during each rinsing process.
The washing program includes a plurality of rinsing processes, and the condensing channel flushing process may be performed in the last rinsing process.
The parameters detected by the detection device comprise at least one of water pressure in the outer barrel, flow rate of water entering the outer barrel and water level in the outer barrel.
The improvement of the present invention further includes that the condensation duct flushing process is started according to the accumulated operation times of the drying program since the last condensation duct flushing process, or according to the accumulated operation times since the first drying program operation. Therefore, after each preset number of drying operations, the condensation channel can be flushed once, and fluff accumulated in the drying period can be flushed away.
On the other hand, the condensation channel flushing process can also be initiated depending on the degree of pile accumulation in the condensation channel.
The condensation channel flushing process may be performed in each drying process and in a first washing process following the drying process.
Another aspect of the present invention also provides a washing and drying machine comprising an outer tub for containing water during a washing process, an inner tub for containing laundry and rotatably disposed in the outer tub, a condensing passage in fluid communication with the outer tub, and a fan connected downstream of the condensing passage in an air circulation direction. The fan is controlled by the control device to realize different rotating speeds. The detection device for detecting the parameter related to the water level in the outer barrel is in communication connection with the control device. The control means is arranged to operate the washer-dryer according to the above-mentioned method.
The invention will be further described with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic view of a partial configuration of a washing and drying machine;
FIG. 2 is a connection diagram of the control device of the washing and drying machine with other electrical devices;
fig. 3 is a flow chart of a condensation channel flushing process.
[ detailed description ] embodiments
As shown in fig. 1, the washing and drying machine 1 includes a tub 2 containing water during a washing process, an inner tub 3 accommodating laundry and rotatably positioned within the tub 2, a condensing passage 4 in fluid communication with the tub 2, a fan 5 downstream of the condensing passage 4 in an air circulation direction, and an air heating passage 6 downstream of the fan 5. The outlet of the air heating passage 6 is fluidly connected to the outer tub 2 again. Through holes (not shown) are distributed on the wall of the inner barrel 3, so as to be communicated with the outer barrel 2.
As shown in fig. 2, the control device 10 is connected to the detection device 11, the water valve 12, the drain pump 13, and the fan 5. Wherein the detecting device 11 may adopt a pressure sensor, and the water level in the outer tub 2 is related according to the measured water pressure. The detection means 11 sends the measured water pressure signal to the control means 10. The control device 10 controls the opening and closing of the water valve 12, the drain pump 13 and the fan 5. The fan 5 is configured to achieve different speeds, and may be a BLDC fan, for example.
The washing and drying machine 1 may operate a washing process and a drying process. The condensation passage flushing process may be operated during the operation of the washing course according to the control of the control device 10. Wherein the condensation duct flushing process is preferably performed during a rinsing process of the washing program; specifically, the condensation passage flushing process may be performed in each rinsing process, and may also be performed in the last rinsing process. The selection can be carried out according to the experimental effect or the energy-saving angle during the program design.
In addition, the condensation duct rinsing process may be started according to the accumulated operation times of the drying program since the last condensation duct rinsing process, or according to the accumulated operation times since the first drying program was operated. That is, the washing process of the condensing channel is performed once in the washing process after the drying process is performed for every N times.
In another embodiment, the condensation channel flushing process may be initiated according to the degree of fluff accumulation within the condensation.
In yet another embodiment, the condensation duct flushing process may be performed in a first washing process after each drying process. For example, when the washing and drying machine is used for the nth time, the drying program is used for the (N + 1) th time, the washing program is used for the (N + 2) th time, and the washing program is used for the (N + 3) th time, the washing process of the condensation channel is started in the washing program used for the (N + 2) th time.
As shown in fig. 3, after the condensation channel flushing process is started, the detection device 11 first detects the water level in the tub 2. In this step, the water level inside the outer tub 2 may be directly detected, or the water level inside the outer tub 2 may be calculated by detecting the water pressure inside the outer tub 2 or the water amount of the water entering the outer tub 2.
The detection means 11 sends the measured data information related to the water level information in the tub to the control means 10, which analyzes the data information and if it is determined that the water level in the tub 2 does not reach the minimum limit level LminThe condensation passage flushing process is ended. Alternatively, in other embodiments, the water valve 12 may be opened to supply water into the outer tub 2, so that the corresponding water level reaches or is higher than the minimum limit water level LminAt this time, water valve 12 is closed. Wherein the lowest limit water LminLocated above the bottom 41 of the inlet 40 of the condensation channel 4.
If the water level in the outer tub 2 reaches the minimum limit water level LminThen, whether the water level exceeds the maximum limit water level L or not is continuously confirmedmaxAnd if the judgment result is yes, ending the flushing process of the condensation channel. Alternatively, in other embodiments, the drain pump 13 may be activated to cause the corresponding water level to at least reach or be lower than the maximum limit water level LmaxAt this time, the drain pump 13 stops operating. Wherein the highest limit water level LmaxBelow the top 42 of the condensing channel inlet 40.
If the judgment result isThe water level does not exceed the maximum limit water level LmaxThen, the interval of the water level in the outer tub 2 is further confirmed.
In the embodiment shown in fig. 3, the maximum defined water level LmaxAnd the lowest limit water level LminAnd is divided into three water level sections by the first water level L1 and the second water level L2. The first water level L1 is higher than the second water level L2.
When the actual water level is within the first water level range, that is, the first water level L1 is not greater than the actual water level<Maximum limit water level LmaxAt this time, the control device 10 controls the fan 5 to rotate at the first low rotation speed S1. When the actual water level is within the second water level interval, that is, the second water level L2 is not greater than the actual water level<When the first water level L1 is reached, the controller 10 controls the fan 5 to rotate at the second rotation speed S2 of the middle gear. When the actual water level is in the third water level interval, the lowest limit water level L is alsomin<Actual water level<At the second water level L2, the control device controls the fan 5 to rotate at a third higher rotation speed S3.
Wherein the fan 5 may be continuously operated after being activated until the condensation duct flushing process is finished after a certain time.
In another embodiment, the fan 5 is intermittently turned on and off at a predetermined frequency, thus ending the condensation duct flushing process after a certain time.
The fluff washed out in the condensing passage 4 is finally discharged from the drain pump 13 at the bottom of the outer tub 2 along with the washing water.
The various embodiments described above and shown in the drawings are illustrative of the invention and are not exhaustive of the invention. Any modification of the present invention by a person of ordinary skill in the related art within the scope of the basic technical idea of the present invention is within the scope of the present invention.
Claims (15)
1. A method of operating a washing and drying machine comprising a tub (2) for containing water during a washing program, an inner tub (3) rotatably arranged in the tub for containing laundry, a condensation channel (4) in fluid communication with the tub, a fan (5) connected downstream of the condensation channel in the air circulation direction, said fan being controlled by control means (10) to achieve different rotation speeds, detection means (11) for detecting a parameter related to the water level in the tub being in communication with the control means, characterized in that the method of operation comprises:
running a condensation channel flushing process in the course of running the washing program;
wherein the condensation channel flushing process comprises:
the detection device detects parameters related to the water level in the outer barrel;
the control device determines whether to start the fan and the rotating speed of the fan according to the difference of the parameter information detected by the detection device.
2. The operating method of a washer-dryer as claimed in claim 1, characterized in that: the parameter information detected by the detecting device is corresponding to the water level in the outer barrel, and the fan is not started when the corresponding water level exceeds the highest limit water level or is lower than the lowest limit water level.
3. The operating method of a washer-dryer as claimed in claim 2, characterized in that: the highest defined water level is lower than a top (42) of the condensation channel inlet; the lowest defined water level is higher than the bottom (41) of the condensation channel inlet.
4. The operating method of a washer-dryer as claimed in claim 2, characterized in that: at least two water level intervals are arranged between the highest limited water level and the lowest limited water level, the at least two water level intervals comprise a first water level interval and a second water level interval, the first water level interval is higher than the second water level interval, when the corresponding water level is located in the first water level interval, the control device controls the fan to rotate at a first rotating speed, when the corresponding water level is located in the second water level interval, the control device controls the fan to rotate at a second rotating speed, and the first rotating speed is lower than the second rotating speed.
5. The operating method of a washer-dryer as claimed in claim 2, characterized in that: the control means intermittently turns the fan on and off at a predetermined frequency when the corresponding water level is between the highest defined water level and the lowest defined water level.
6. The operating method of a washer-dryer as claimed in claim 2, characterized in that: when the corresponding water level is between the highest limit water level and the lowest limit water level, the control device starts the fan and enables the fan to continuously run for a specific time, and then the washing process of the condensation channel is finished.
7. The operating method of a washer-dryer as claimed in claim 2, characterized in that: when the corresponding water level exceeds the highest limited water level, the control device starts a drainage pump (13) of the washing and drying machine, so that the drainage pump stops working and starts a fan when the corresponding water level at least reaches or is lower than the highest limited water level; when the corresponding water level is lower than the lowest limit water level, the control device opens the water valve (12) to feed water into the outer barrel, so that the corresponding water level at least reaches or is higher than the lowest limit water level, the water valve is closed, and the fan is started.
8. The operating method of a washer-dryer as claimed in claim 1, characterized in that: the washing program includes a rinsing process during which the condensation duct flushing process is performed.
9. The operating method of a washer-dryer as claimed in claim 8, characterized in that: the washing program includes a plurality of rinsing processes, and the condensing channel flushing process is performed in each rinsing process.
10. The operating method of a washer-dryer as claimed in claim 8, characterized in that: the washing program includes a plurality of rinsing processes, and the condensing passage washing process is performed in the last rinsing process.
11. The operating method of a washer-dryer as claimed in claim 1, characterized in that: the parameters detected by the detection device comprise at least one of water pressure in the outer barrel, flow rate of water entering the outer barrel and water level in the outer barrel.
12. The operating method of a washer-dryer as claimed in claim 1, characterized in that: the condensing channel washing course is started according to the accumulated operation times of the drying course since the last condensing channel washing course, or according to the accumulated operation times since the first drying course is operated.
13. The operating method of a washer-dryer as claimed in claim 1, characterized in that: the condensation channel flushing process is initiated depending on the degree of fluff accumulation in the condensation channel.
14. The operating method of a washer-dryer as claimed in claim 1, characterized in that: the condensation channel flushing process may be performed in each drying process and in a first washing process following the drying process.
15. A washer-dryer comprising a tub (2) for holding water during a washing cycle, an inner tub (3) for holding laundry and rotatably positioned in the tub, a condensation channel (4) in fluid communication with the tub, a fan (5) connected downstream of the condensation channel in the air circulation direction, said fan being controlled by a control device (10) to achieve different rotation speeds, detection means (11) for detecting a parameter related to the water level in the tub being in communication with the control device, characterized in that: control means are provided for operating the washer-dryer according to the method of any one of claims 1-14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395427.5A CN107460694B (en) | 2016-06-06 | 2016-06-06 | Washing and drying machine and operation method thereof |
| DE102017209275.0A DE102017209275A1 (en) | 2016-06-06 | 2017-06-01 | Washer dryer and method of operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395427.5A CN107460694B (en) | 2016-06-06 | 2016-06-06 | Washing and drying machine and operation method thereof |
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| CN107460694A CN107460694A (en) | 2017-12-12 |
| CN107460694B true CN107460694B (en) | 2020-11-06 |
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| CN112442836B (en) * | 2019-08-29 | 2023-03-03 | 松下家电(中国)有限公司 | Thread scrap processing method of clothes processing equipment |
| CN114351427A (en) * | 2021-12-30 | 2022-04-15 | 合肥美的洗衣机有限公司 | Clothes treatment equipment and cleaning method |
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| CN105088643A (en) * | 2014-05-22 | 2015-11-25 | 青岛海尔洗衣机有限公司 | Washing machine drainage control method |
| CN105625007A (en) * | 2014-12-01 | 2016-06-01 | 青岛海尔洗衣机有限公司 | Lint cleaning device and method for clothes dryer evaporator |
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| DE102017209275A1 (en) | 2017-12-07 |
| CN107460694A (en) | 2017-12-12 |
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