CN113846462A - Washing machine and control method - Google Patents
Washing machine and control method Download PDFInfo
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- CN113846462A CN113846462A CN202111145033.1A CN202111145033A CN113846462A CN 113846462 A CN113846462 A CN 113846462A CN 202111145033 A CN202111145033 A CN 202111145033A CN 113846462 A CN113846462 A CN 113846462A
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- 238000005406 washing Methods 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 156
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 238000004140 cleaning Methods 0.000 claims abstract description 28
- 230000001105 regulatory effect Effects 0.000 claims abstract description 21
- 238000009835 boiling Methods 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 35
- 238000001035 drying Methods 0.000 claims description 30
- 238000013020 steam cleaning Methods 0.000 claims description 20
- 239000000523 sample Substances 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 13
- 238000012806 monitoring device Methods 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- 238000005485 electric heating Methods 0.000 description 15
- 238000007599 discharging Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000008400 supply water Substances 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
- 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
- D06F17/12—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 gases, e.g. air or steam, introduced into the washing liquid
-
- 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
- D06F33/56—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
-
- 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
- D06F39/04—Heating 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
- D06F2103/18—Washing liquid level
-
- 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
-
- 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
-
- 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
- D06F2105/18—Pressure
-
- 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
- D06F2105/32—Air flow control means
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The present invention provides a washing machine and a control method, the washing machine including: the outer barrel component is used for placing the object to be washed and the cleaning water in the outer barrel component; the heating device is arranged on the outer barrel assembly and used for heating the cleaning water to generate steam; and the pressure adjusting device is communicated with the inside of the outer barrel assembly and is used for adjusting the air pressure in the outer barrel assembly so as to change the boiling point of the cleaning water. Based on the technical scheme of the invention, the pressure adjusting device changes the boiling point of the cleaning water by adjusting the air pressure in the outer cylinder component. Therefore, steam with preset temperature can be generated in the outer barrel assembly, and the washing object can be cleaned at the preset steam temperature, so that the cleaning requirement is met. In addition, the pressure regulating device can ensure that steam is sufficiently generated in the outer cylinder assembly, thereby ensuring the efficiency of steam generation at a preset arbitrary set temperature. Thereby better meeting the cleaning requirement of the object to be washed.
Description
Technical Field
The invention relates to the technical field of washing equipment of household appliances, in particular to a washing machine and a control method.
Background
At present, water is usually boiled by electric heating in a steam generating cavity to generate steam, then the steam generated in the steam generating cavity is sent into a washing machine barrel through a pipeline, and a fan enables the steam to circulate in an air channel and the barrel so as to achieve the purpose of washing objects to be washed by the steam.
However, the washing machine in the related art cannot generate steam of any preset temperature to wash the laundry, and thus cannot meet the washing requirement of the laundry.
Disclosure of Invention
In view of the problems in the prior art, the application provides a washing machine and a control method, and the problem that the washing machine cannot generate steam with any preset temperature to clean the to-be-washed objects is solved.
The washing machine of the present invention comprises: the outer barrel component is used for placing the object to be washed and the cleaning water in the outer barrel component; the heating device is arranged on the outer barrel assembly and used for heating the cleaning water to generate steam; and the pressure adjusting device is communicated with the inside of the outer barrel assembly and is used for adjusting the air pressure in the outer barrel assembly so as to change the boiling point of the cleaning water.
In one embodiment, the heating means comprises a heating chassis disposed at the bottom of the outer cartridge assembly. Through this embodiment, the heating chassis can heat the bottom of outer drum assembly to ensure that the washing water in the outer drum assembly can be heated and become steam. Thereby ensuring the normal operation of the washing machine.
In one embodiment, the pressure regulating device includes a pumping member and a pressure monitoring member, both of which communicate with the interior of the outer barrel assembly. Through this embodiment, can adjust the internal pressure of urceolus subassembly to preset pressure value through the cooperation of pumping piece and pressure monitoring spare use. Thereby ensure to produce the steam of predetermineeing the temperature in the urceolus subassembly to ensure to wait that the washings can wash under predetermined steam temperature, and then satisfy its washing requirement.
In one embodiment, a liquid level monitoring device is further included, and is disposed within the outer cartridge assembly for monitoring a liquid level height of the washing water. Through this embodiment, the liquid level monitoring device can monitor the liquid level height of the washing water in the outer tube assembly. Therefore, the subsequent supplement of the washing water is convenient, so that enough washing water is ensured to be stored in the outer barrel assembly, and sufficient steam is ensured to be generated to meet the washing requirement of the objects to be washed.
In one embodiment, the fluid level monitoring device includes a plurality of fluid level probes spaced apart along the height of the outer barrel assembly.
In one embodiment, the outer barrel assembly further comprises a first inlet and outlet pipe and/or a second inlet and outlet pipe and/or a third inlet and outlet pipe, and the first inlet and outlet pipe, the second inlet and outlet pipe and the third inlet and outlet pipe are communicated with the interior of the outer barrel assembly. Through the embodiment, the first inlet and outlet pipe is a water supplementing channel and used for supplementing cleaning water, the second inlet and outlet pipe is an air outlet channel and used for discharging air in the outer barrel assembly, and the third inlet and outlet pipe is a water discharging channel and used for discharging the cleaning water in the outer barrel assembly. Three inlet and outlet pipes are provided to ensure that the washing machine can work normally.
In one embodiment, the system further comprises a control valve, and the control valve is arranged on the first inlet and outlet pipe and/or the second inlet and outlet pipe and/or the third inlet and outlet pipe. Through this embodiment, the control valve is used for controlling the break-make that corresponds the business turn over pipe to ensure that washing machine can normal moisturizing or drainage or exhaust. Thereby ensuring the normal operation of the washing machine.
In one embodiment, the air duct assembly further comprises an air duct pipeline and a fan arranged on the air duct pipeline, wherein two ends of the air duct pipeline are communicated with the inside of the outer barrel assembly. Through the embodiment, the air duct assembly is arranged, so that the flow passage circulation speed of steam in the outer barrel assembly can be accelerated, the steam cleaning efficiency of the washing machine is improved, and the cleaning effect of the washing machine is enhanced.
In one embodiment, the drying device further comprises a drying module, wherein the drying module is arranged on the air duct pipeline and is used for drying air in the outer barrel assembly.
In one embodiment, the steam cleaning device further comprises a control module, the control module is connected with the pressure regulating device, and the control module can control the pressure regulating device to act according to a preset steam cleaning temperature value so as to adjust the air pressure in the outer barrel assembly. Through this embodiment, the drying module can produce hot and dry air, under the effect of fan, sends into the urceolus subassembly with dry hot-air and treats the washings and dry. Thereby realizing the drying function of the washing machine and further meeting the multifunctional requirement of the washing machine.
The invention provides a control method, which comprises the following steps: adding wash water to the outer drum assembly;
stopping adding water when the cleaning water reaches a first preset water level;
adjusting the air pressure in the outer cylinder assembly to a preset air pressure value through a pressure adjusting device;
when the air pressure in the outer cylinder component is adjusted to a preset air pressure value, the heating device is started;
when the water level in the outer barrel assembly reaches a second preset water level, starting the fan to circularly clean the articles to be washed;
wherein, the first preset water level is greater than the liquid level height of the second preset water level.
In one embodiment, further comprising: when the preset running time of the steam washing mode is finished, selecting a drying mode; the heating device is closed, the control valve on the first inlet and outlet pipe is closed, and the control valves on the second inlet and outlet pipe and the third inlet and outlet pipe are opened; and the drying module is started to circularly dry the to-be-washed objects.
In one embodiment, a determination procedure of whether the preset operation time of the steam washing mode is finished is further included before the drying mode is selected after the preset operation time of the steam washing mode is finished.
In one embodiment, before adding the washing water to the outer drum assembly, further comprising:
setting a steam cleaning temperature on the control module, and starting a steam cleaning mode;
control valves on the first inlet and outlet pipe and the second inlet and outlet pipe are both opened, and a control valve on the third inlet and outlet pipe is closed.
In one embodiment, a determination process of whether the washing water reaches the first preset water level is further included before stopping adding the water when the washing water reaches the first preset water level.
In one embodiment, when the air pressure in the outer cylinder assembly is adjusted to the preset air pressure value, a judgment procedure for judging whether the air pressure value in the outer cylinder assembly reaches the preset air pressure value is further included before the heating device is started.
The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the invention is achieved.
Compared with the prior art, the washing machine and the control method provided by the invention at least have the following beneficial effects:
the pressure regulating device changes the boiling point of the cleaning water by regulating the air pressure in the outer cylinder component. Therefore, steam with preset temperature can be generated in the outer barrel assembly, and the washing object can be cleaned at the preset steam temperature, so that the cleaning requirement is met. In addition, the pressure regulating device can ensure that steam is sufficiently generated in the outer cylinder assembly, thereby ensuring the efficiency of steam generation at a preset arbitrary set temperature. Thereby better meeting the cleaning requirement of the object to be washed.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
FIG. 1 shows a schematic view of a washing machine according to the present invention;
FIG. 2 shows a method flow diagram of the control method of the present invention;
FIG. 3 shows a method flow diagram of a complete embodiment of the control method of the present invention;
in the drawings, like parts are provided with like reference numerals. The drawings are not to scale.
Reference numerals:
10. an outer barrel assembly; 20. a heating device; 30. a pressure regulating device; 31. a pumping member; 32. a pressure monitoring member; 40. a liquid level monitoring device; 41. a liquid level probe; 50. a first inlet and outlet pipe; 60. a second inlet and outlet pipe; 70. a third inlet and outlet pipe; 80. a control valve; 90. an air duct assembly; 91. an air duct conduit; 92. a fan; 100. and a drying module.
Detailed Description
The invention will be further explained with reference to the drawings.
Note that, in the present application, the height direction of the outer cylinder assembly 10 is the vertical direction in fig. 1. A
As shown in fig. 1, the present invention provides a washing machine for washing laundry by steam, comprising a tub assembly 10, a heating device 20, and a pressure adjusting device 30. Wherein the laundry and the washing water are placed in the tub assembly 10. A heating device 20 is provided to the tub assembly 10, and the heating device 20 is used to heat the washing water to generate steam. A pressure adjusting device 30 is communicated with the inside of the tub assembly 10, and the pressure adjusting device 30 is used to adjust the air pressure inside the tub assembly 10 to change the boiling point of the washing water.
In the above arrangement, the pressure adjusting device 30 changes the boiling point of the washing water by adjusting the air pressure in the outer tub assembly 10. This ensures that steam at a predetermined temperature can be generated within the tub assembly 10, thereby ensuring that the laundry can be cleaned at the predetermined steam temperature, and thus, the cleaning requirements thereof can be satisfied. In addition, the pressure regulating device 30 can ensure sufficient generation of steam within the tub assembly 10, thereby ensuring efficiency of steam generation at a preset arbitrary set temperature. Thereby better meeting the cleaning requirement of the object to be washed.
It should be noted that the evaporation rate of water at a normal atmospheric pressure is temperature dependent, the higher the temperature is, the faster the evaporation is, and when the temperature reaches the boiling point, the temperature of water does not rise any more, in other words, the evaporation rate reaches the highest, and the boiling point of water is 100 ℃ at a normal atmospheric pressure. If it is desired to maintain the maximum evaporation rate of water at any temperature, in other words, to allow the water to boil at any temperature. According to the physical property that the boiling point of water changes along with the change of the air pressure, the boiling point of water can be controlled by artificially controlling the air pressure, so that the speed of the generated steam is kept to be the highest, and the temperature of the generated steam changes along with the boiling point of water. Thus, the steam washing at any temperature can not affect the steam generation speed, for example, if steam at 30 ℃ is required, the air pressure is only reduced to the boiling point of water to 30 ℃.
Specifically, as shown in fig. 1, in one embodiment, the heating device 20 includes a heating chassis disposed at the bottom of the outer cartridge assembly 10.
In the above arrangement, the heating base plate can heat the bottom of the outer tub assembly 10, thereby ensuring that the washing water in the outer tub assembly 10 can be heated to become steam. Thereby ensuring the normal operation of the washing machine.
Specifically, as shown in fig. 1, in one embodiment, the pressure regulating device 30 includes a pumping member 31 and a pressure monitoring member 32, and both the pumping member 31 and the pressure monitoring member 32 communicate with the interior of the tub assembly 10.
In the above arrangement, the internal pressure of the outer cylinder assembly 10 can be adjusted to a preset pressure value by using the pumping member 31 in cooperation with the pressure monitoring member 32. Thereby ensuring that steam with preset temperature can be generated in the outer barrel assembly 10, and further ensuring that the to-be-washed objects can be washed at the preset steam temperature so as to meet the washing requirements.
It should be noted that the pressure monitoring member 32 can display the real-time pressure in the outer cylinder assembly 10, and the pumping member 31 can adjust the pressure value in the outer cylinder assembly 10 in real time. In this way, the pressure can be dynamically adjusted according to the real-time pressure value in the outer cylinder assembly 10 displayed by the pressure monitoring part 32 until the pressure value is the same as the pressure value corresponding to the preset temperature.
Specifically, as shown in fig. 1, in one embodiment, the washing machine further includes a liquid level monitoring device 40, and the liquid level monitoring device 40 is disposed inside the outer tub assembly 10 for monitoring a liquid level height of the washing water.
In the above arrangement, the liquid level monitoring device 40 can monitor the liquid level of the cleaning water in the tub assembly 10. This facilitates subsequent replenishment of the wash water, thereby ensuring that sufficient wash water is stored within the tub assembly 10, and thus ensuring that sufficient steam is generated to meet the wash requirements of the articles to be washed.
Specifically, as shown in FIG. 1, in one embodiment, the fluid level monitoring device 40 includes a plurality of fluid level probes 41 spaced along the height of the tub assembly 10.
It should be noted that, most of the washing machines in the related art use a liquid level sensor, and the liquid level sensor determines the height of the water level according to the pressure by detecting the pressure of the water at the bottom of the drum, but the liquid level sensor must be used under the standard atmospheric pressure, and if the air pressure changes, the detection will have errors. Therefore, the liquid level monitoring device 40 in the present application cannot employ a liquid level sensor, but employs a liquid level probe 41.
Specifically, as shown in fig. 1, in one embodiment, the washing machine further includes a first inlet and outlet pipe 50, a second inlet and outlet pipe 60, and a third inlet and outlet pipe 70, and the first inlet and outlet pipe 50, the second inlet and outlet pipe 60, and the third inlet and outlet pipe 70 are all communicated with the inside of the tub assembly 10.
In the above arrangement, the first inlet/outlet pipe 50 is a water replenishing channel for replenishing the cleaning water, the second inlet/outlet pipe 60 is an air outlet channel for discharging the air in the tub assembly 10, and the third inlet/outlet pipe 70 is a water discharge channel for discharging the cleaning water in the tub assembly 10. Three inlet and outlet pipes are provided to ensure that the washing machine can work normally.
Specifically, as shown in fig. 1, in one embodiment, the washing machine further includes control valves 80, and the control valves 80 are respectively disposed on the first inlet and outlet pipe 50, the second inlet and outlet pipe 60, and the third inlet and outlet pipe 70.
In the above arrangement, the control valve 80 is used to control the on/off of the corresponding inlet/outlet pipe, so as to ensure that the washing machine can normally supply water, drain water or exhaust air. Thereby ensuring the normal operation of the washing machine.
Specifically, as shown in FIG. 1, in one embodiment, the control valve 80 is a gas-tight valve. The airtight valve provided in the first inlet/outlet pipe 50 is a water inlet airtight valve, the airtight valve provided in the second inlet/outlet pipe 60 is a pressure relief airtight valve, and the airtight valve provided in the third inlet/outlet pipe 70 is a water discharge airtight valve.
Specifically, as shown in fig. 1, in one embodiment, the washing machine further includes an air duct assembly 90, the air duct assembly 90 includes an air duct pipe 91 and a fan 92 disposed on the air duct pipe 91, wherein both ends of the air duct pipe 91 communicate with the inside of the outer tub assembly 10.
In the above arrangement, the air duct assembly 90 can accelerate the flow circulation speed of the steam in the tub assembly 10, thereby improving the steam cleaning efficiency of the washing machine and further enhancing the cleaning effect of the washing machine.
Specifically, as shown in fig. 1, in one embodiment, the washing machine further includes a drying module 100, and the drying module 100 is disposed on the duct 91.
In the above arrangement, the drying module 100 can generate hot and dry air, and the hot and dry air is sent into the tub assembly 10 to dry the laundry under the action of the blower 92. Thereby realizing the drying function of the washing machine and further meeting the multifunctional requirement of the washing machine.
It should be noted that the drying module 100 includes two modules, an evaporator and a condenser. The evaporator is used for absorbing heat, and the condenser is used for releasing heat, and its specific theory of operation does: moist hot air firstly passes through the evaporator, the evaporator absorbs the heat of the air, moisture is condensed, the air becomes cold and dry, then the air passes through the condenser, the condenser releases the heat to heat the air, the air becomes hot and dry, and the air is sent into the barrel through the fan to be dried. The compressor is used for providing or absorbing heat for the copper pipe, the copper pipe is connected with the compressor, and the fin increases the contact area of the copper pipe and air.
Specifically, in one embodiment, the washing machine further comprises a control module, the control module is connected to the pressure regulating device 30, and the control module can control the pressure regulating device 30 to act according to a preset steam cleaning temperature value so as to adjust the air pressure in the tub assembly 10.
In the above arrangement, the washing machine integrates the control module, so that the washing machine has an automatic pressure regulating function, and can regulate the air pressure in the outer cylinder assembly 10 according to the preset steam cleaning temperature value. Thereby improving the working efficiency of the washing machine and meeting the automatic control requirement of the washing machine.
As shown in fig. 2, the present invention further provides a control method, which includes:
adding wash water to the outer drum assembly;
stopping adding water when the cleaning water reaches a first preset water level;
adjusting the air pressure in the outer cylinder assembly to a preset air pressure value through a pressure adjusting device;
when the air pressure in the outer cylinder component is adjusted to a preset air pressure value, the heating device is started;
when the water level in the outer barrel assembly reaches a second preset water level, starting the fan to circularly clean the articles to be washed;
wherein, the first preset water level is greater than the liquid level height of the second preset water level.
According to the above steps, the pressure adjusting device 30 changes the boiling point of the washing water by adjusting the air pressure inside the outer tub assembly 10. This ensures that steam at a predetermined temperature can be generated within the tub assembly 10, thereby ensuring that the laundry can be cleaned at the predetermined steam temperature, and thus, the cleaning requirements thereof can be satisfied. In addition, the pressure regulating device 30 can ensure sufficient generation of steam within the tub assembly 10, thereby ensuring efficiency of steam generation at a preset arbitrary set temperature. Thereby better meeting the cleaning requirement of the object to be washed.
It should be noted that, as shown in fig. 1, the first preset water level is a water level higher than the uppermost liquid level probe 41, the second preset water level is a water level lower than the middle liquid level probe 41 and higher than the lowermost liquid level probe 41, and the third preset water level is a water level lower than the lowermost liquid level probe 41.
Specifically, in one embodiment, the control method further comprises:
when the preset running time of the steam washing mode is finished, selecting a drying mode;
the heating device is closed, the control valve on the first inlet and outlet pipe is closed, and the control valves on the second inlet and outlet pipe and the third inlet and outlet pipe are opened;
and the drying module is started to circularly dry the to-be-washed objects.
Specifically, in one embodiment, a determination procedure of whether the preset operation time of the steam washing mode is finished is further included before the drying mode is selected after the preset operation time of the steam washing mode is finished.
Specifically, in one embodiment, before adding the washing water to the outer drum assembly, further comprises:
setting a steam cleaning temperature on the control module, and starting a steam cleaning mode;
control valves on the first inlet and outlet pipe and the second inlet and outlet pipe are both opened, and a control valve on the third inlet and outlet pipe is closed.
It should be noted that, the customer can set the preset operation time and the steam cleaning temperature of the steam cleaning mode according to the actual requirements of the customer. Generally, the steam washing mode preset operation time is set to 30 to 60 minutes, and the steam washing temperature is set to 25 to 90 ℃. Of course, the method is not limited to the range values given above, and can be adjusted according to actual conditions.
Specifically, in one embodiment, a determination process of whether the washing water reaches the first preset water level is further included before stopping adding the water when the washing water reaches the first preset water level.
Specifically, in one embodiment, when the air pressure in the outer cylinder assembly is adjusted to the preset air pressure value, a determination procedure of whether the air pressure value in the outer cylinder assembly reaches the preset air pressure value is further included before the heating device is turned on.
As shown in fig. 3, a complete embodiment of the control method of the present application is set forth below:
example one
Steam cleaning mode
Step one, setting steam cleaning temperature, starting a steam cleaning mode, and converting a program into a preset air pressure value according to the temperature;
opening a water inlet airtight valve, opening a pressure relief airtight valve, and closing a water discharge airtight valve;
step three, starting water inflow;
step four, if the water level reaches a first preset water level, namely the first preset water level, closing the water inlet airtight valve, closing the pressure relief airtight valve and closing the water discharge airtight valve; if the water level does not reach the first preset water level, returning to the third step;
turning on an air pump, and adjusting the air pressure of the outer barrel assembly;
step six, the air pressure sensor detects that the air pressure of the outer cylinder component begins to change, if the air pressure reaches a preset air pressure value, the air pump is turned off, the electric heating is turned on, and the heating chassis begins to heat to enable water to boil to generate steam; if the preset air pressure value is not reached, returning to the fifth step;
step seven, turning off the air pump, turning on electric heating, and starting heating the heating chassis to boil water to generate steam;
step eight, judging whether the water level reaches a preset water level two, if so, starting a fan and starting electric heating; if not, returning to the seventh step;
step nine, if the preset running time of the steam washing mode is finished, the drying mode is not selected, and the whole washing program is finished (specifically comprising the steps of 1, closing electric heating, opening a fan, closing a water inlet airtight valve, opening a pressure relief airtight valve, opening a drainage airtight valve, and 2, reducing the temperature to the preset safe temperature, unlocking a door lock, and finishing the program); if the preset running time of the steam washing mode is not finished, judging whether the preset water level III is reached;
step ten, if yes, the electric heating is turned off, whether the preset running time of the steam washing mode is finished or not is judged, and if not, the step seven is returned;
step eleven, if the preset running time of the steam washing mode is finished, finishing the whole washing program (comprising the steps of 1, closing electric heating, opening a fan, closing a water inlet airtight valve, opening a pressure relief airtight valve and opening a drainage airtight valve, and 2, reducing the temperature to the preset safe temperature, unlocking a door lock and finishing the program); if the preset running time of the steam washing mode is not finished, judging whether the preset water level II is reached;
step twelve, if not, returning to the step ten of turning off the electric heating, then judging whether the preset running time of the steam washing mode is finished, and if so, returning to the step seven.
It should be noted that, when the water level is reduced to the preset water level, that is, the height of the second preset water level, the fan 92 is turned on, so that the fan 92 drives the steam to circulate in the drum. In the steam washing process, after the water level is reduced to the height of the third preset water level, the heating chassis stops heating, steam generation is stopped, and dry burning is avoided. In the steam washing process, after the water level is restored to the second preset water level from the third preset water level, the heating chassis is started to supplement the steam reduced due to cooling. After the steam washing time is over, the heating chassis is closed, the fan 92 is started, the pressure relief airtight valve is opened, the drainage airtight valve is opened, the air pressure of the outer cylinder assembly 10 is recovered to be normal, residual water in the cylinder is discharged, and the temperature begins to be reduced. Starting the fan 92, unlocking the door of the washing machine after the temperature is recovered to the safe temperature, and ending the steam washing program;
example two
Steam cleaning mode and drying mode
Step one, setting steam cleaning temperature, starting a steam cleaning mode, and converting a program into a preset air pressure value according to the temperature;
opening a water inlet airtight valve, opening a pressure relief airtight valve, and closing a water discharge airtight valve;
step three, starting water inflow;
step four, if the water level reaches a first preset water level, namely the first preset water level, closing the water inlet airtight valve, closing the pressure relief airtight valve and closing the water discharge airtight valve; if the water level does not reach the first preset water level, returning to the third step;
step five, starting an air pump to start working, and adjusting the air pressure of the outer cylinder component;
step six, the air pressure sensor detects that the air pressure of the outer cylinder component begins to change, if the air pressure reaches a preset air pressure value, the air pump is turned off, the electric heating is turned on, and the heating chassis begins to heat to enable water to boil to generate steam; if the preset air pressure value is not reached, returning to the fifth step;
step seven, turning off the air pump, turning on electric heating, and starting heating the heating chassis to boil water to generate steam;
step eight, judging whether the water level reaches a preset water level two, if so, starting a fan and starting electric heating; if not, returning to the seventh step;
step nine, if the preset running time of the steam washing mode is finished, the whole cleaning program of the drying mode is not selected to be finished (specifically comprising the steps of 1, closing electric heating, closing a water inlet airtight valve, opening a pressure relief airtight valve, opening a water drainage airtight valve, 2, opening a fan, opening two modules, 3, finishing drying, unlocking a door lock and finishing the program); if the preset running time of the steam washing mode is not finished, judging whether the preset water level III is reached;
step ten, if yes, the electric heating is turned off, whether the preset running time of the steam washing mode is finished or not is judged, and if not, the step seven is returned;
step eleven, if the preset running time of the steam washing mode is finished, finishing the whole washing program (comprising the steps of 1, closing the electric heating, closing the water inlet airtight valve, opening the pressure relief airtight valve and opening the water drainage airtight valve, 2, opening the fan, opening the two modules, 3, finishing drying, unlocking the door lock and finishing the program); if the preset running time of the steam washing mode is not finished, judging whether the preset water level II is reached;
step twelve, if not, returning to the step ten of turning off the electric heating, then judging whether the preset running time of the steam washing mode is finished, and if so, returning to the step seven.
After the steam washing time is over, the heating chassis is closed, the pressure relief air-tight valve is opened, the drainage air-tight valve is opened, the air pressure of the outer cylinder assembly is recovered to be normal, residual water in the cylinder is drained, and after the drainage is over, the fan and the two modules are opened to start drying. After drying, the door can be opened to take out the clothes.
It should be noted that the fan 92 and the two modules are provided with temperature sensors for sensing the temperature of the air inlet/outlet channel in the drum.
When the water inlet airtight valve, the pressure relief airtight valve and the water discharge airtight valve are closed, the outer cylinder assembly 10 is in a completely sealed state, the air pressure in the cylinder is controlled by the air pump, the boiling point of water in the cylinder changes along with the air pressure, and the temperature of steam in the cylinder also changes along with the boiling point of water. Therefore, the steam washing temperature can be controlled by feeding back the air pressure signal of the outer barrel assembly through the air pressure sensor.
Since this solution requires the control of the air pressure of the outer cylinder assembly 10, a general liquid level sensor cannot be used, and the determination of the liquid level height can be performed only by the conduction between the three metal liquid level probes 41. When the water level is between the uppermost liquid level probe 41 and the middle liquid level probe 41, the heating chassis is started, but the fan 92 is not started, so that the phenomenon that the steam quantity and the steam temperature are insufficient and the steam is condensed in the air duct to influence the efficiency of the generation of the initial steam is avoided. When the water level is between the middle liquid level probe 41 and the lowest liquid level probe 41, the amount of steam is sufficient, and then the fan 92 can be started to drive the steam to circulate; when the water level is lower than the lowest liquid level probe 41, the residual water in the cylinder is not much, dry burning is avoided, and the heating chassis needs to be closed; when the water level returns to the height of the middle liquid level probe 41, the heating chassis is started again to maintain the steam amount in the barrel.
Optionally, an auxiliary heating device is added at the air outlet of the air duct, so that the steam temperature can be maintained better.
As can be understood from the above description, the pressure adjusting device 30 changes the boiling point of the washing water by adjusting the air pressure inside the tub assembly 10. This ensures that steam at a predetermined temperature can be generated within the tub assembly 10, thereby ensuring that the laundry can be cleaned at the predetermined steam temperature, and thus, the cleaning requirements thereof can be satisfied. In addition, the pressure regulating device 30 can ensure sufficient generation of steam within the tub assembly 10, thereby ensuring efficiency of steam generation at a preset arbitrary set temperature. Thereby better meeting the cleaning requirement of the object to be washed.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (16)
1. A washing machine, characterized in that the washing machine washes laundry by steam, comprising:
the outer barrel assembly is used for placing the objects to be washed and the washing water in the outer barrel assembly;
the heating device is arranged on the outer barrel assembly and used for heating the washing water to generate the steam;
a pressure regulating device in communication with an interior of the tub assembly, the pressure regulating device for regulating an air pressure within the tub assembly to change a boiling point of the wash water.
2. A washing machine as claimed in claim 1 wherein the heating means comprises a heating chassis provided at the bottom of the tub assembly.
3. A washing machine as claimed in claim 2 wherein the pressure regulating means comprises a pumping member and a pressure monitoring member, both of which communicate with the interior of the tub assembly.
4. The washing machine as claimed in claim 1, further comprising a liquid level monitoring device provided in the tub assembly for monitoring a liquid level height of the washing water.
5. A washing machine as claimed in claim 4 wherein the level monitoring means comprises a plurality of level probes spaced along the height of the tub assembly.
6. The washing machine as claimed in any one of claims 1 to 5, further comprising a first inlet and outlet pipe and/or a second inlet and outlet pipe and/or a third inlet and outlet pipe, the first inlet and outlet pipe, the second inlet and outlet pipe and the third inlet and outlet pipe all communicating with the interior of the tub assembly.
7. The washing machine as claimed in claim 6, further comprising a control valve provided on the first inlet and/or outlet pipe and/or the second inlet and outlet pipe and/or the third inlet and outlet pipe.
8. The washing machine as claimed in claim 7, further comprising an air duct assembly including an air duct and a fan provided on the air duct, wherein both ends of the air duct communicate with the inside of the outer tub assembly.
9. The washing machine as claimed in claim 8, further comprising a drying module provided on the duct for drying air inside the tub assembly.
10. A washing machine as claimed in any one of claims 6 to 9 further comprising a control module connected to the pressure regulating means, the control module being capable of controlling the pressure regulating means to act to adjust the air pressure within the tub assembly in accordance with a preset steam wash temperature value.
11. A control method, comprising:
adding wash water to the outer drum assembly;
stopping adding water when the cleaning water reaches a first preset water level;
adjusting the air pressure in the outer cylinder assembly to a preset air pressure value through a pressure adjusting device;
when the air pressure in the outer cylinder component is adjusted to a preset air pressure value, a heating device is started;
when the water level in the outer barrel assembly reaches a second preset water level, starting a fan to circularly clean the to-be-washed object;
wherein the first preset water level is greater than the liquid level height of the second preset water level.
12. The control method according to claim 11, characterized by further comprising:
when the preset running time of the steam washing mode is finished, selecting a drying mode;
the heating device is closed, the control valve on the first inlet and outlet pipe is closed, and the control valves on the second inlet and outlet pipe and the third inlet and outlet pipe are opened;
and the drying module is started to circularly dry the to-be-washed objects.
13. The control method of claim 12, further comprising a determination procedure of whether the preset operation time of the steam washing mode is finished before the drying mode is selected after the preset operation time of the steam washing mode is finished.
14. The control method of claim 11, further comprising, before adding the washing water to the outer tub assembly:
setting a steam cleaning temperature on the control module, and starting a steam cleaning mode;
control valves on the first inlet and outlet pipe and the second inlet and outlet pipe are both opened, and a control valve on the third inlet and outlet pipe is closed.
15. The control method of claim 11, further comprising a judging process of whether the washing water reaches the first preset water level before stopping adding the water when the washing water reaches the first preset water level.
16. The control method according to claim 11, further comprising a procedure of determining whether the air pressure value in the tub assembly reaches a preset air pressure value before the heating means is turned on when the air pressure in the tub assembly is adjusted to the preset air pressure value.
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| CN202111145033.1A CN113846462A (en) | 2021-09-28 | 2021-09-28 | Washing machine and control method |
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| CN202111145033.1A CN113846462A (en) | 2021-09-28 | 2021-09-28 | Washing machine and control method |
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| CN115652591A (en) * | 2022-11-18 | 2023-01-31 | 艾米丁(杭州)互联网科技有限公司 | Thing networking laundry control system |
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