CN109957909B - Method for sterilizing clothes by using washing machine and washing machine capable of implementing method - Google Patents
Method for sterilizing clothes by using washing machine and washing machine capable of implementing method Download PDFInfo
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- CN109957909B CN109957909B CN201711402261.6A CN201711402261A CN109957909B CN 109957909 B CN109957909 B CN 109957909B CN 201711402261 A CN201711402261 A CN 201711402261A CN 109957909 B CN109957909 B CN 109957909B
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- heating device
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- air channel
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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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
- D06F35/001—Washing machines, apparatus, or methods not otherwise provided for using ozone
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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
- D06F2103/32—Temperature
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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
- D06F2105/28—Electric heating
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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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/26—Casings; Tubs
- D06F37/266—Gaskets mounted between tub and casing around the loading opening
-
- 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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
A method for sterilizing clothes by using a washing machine comprises providing the washing machine with a processing barrel and an air channel which are communicated with each other in space, wherein a rubber door seal is arranged at a feeding port of the processing barrel, an inlet end of the air channel is connected with the processing barrel, an outlet end of the air channel is connected with the door seal, a fan and a heating device are arranged in the air channel, and the fan is positioned at the upstream of the heating device according to the flow direction of air flow blown by the fan; starting a heating device to heat air around the heating device; starting a fan to drive air to circularly flow between the processing barrel and the air channel; and activating an ozone generating device located in the air passage and upstream of the heating device to generate ozone. The washing machine capable of sterilizing the laundry includes a control device, and performs a sterilizing operation on the laundry in the processing tub under the control of the control device.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to a control method of a washing machine.
[ background of the invention ]
Ozone has good sterilization and odor removal functions, and can be used for sterilizing and removing odor from clothes in a washing machine. However, the door seal of the washing machine is often made of rubber, and ozone can cause the aging and deterioration of the rubber and reduce the service life of the door seal. Moreover, ozone can cause harm to human bodies, and a technical problem to be solved is how to ensure that ozone remained in the washing machine after the sterilization and odor removal program is finished.
In view of the above, some existing washing machines provide ozone with a special passage, which results in high production costs and space costs. In addition, in order to remove residual ozone, a method of absorbing ozone by providing an activated carbon filter in an air passage is known. This also entails additional costs. In addition, the aging damage of ozone to rubber door seals is not well addressed or mitigated.
[ summary of the invention ]
It is an object of the present invention to provide a method for sterilizing and deodorizing clothing using ozone, while overcoming or reducing the above-mentioned problems in the prior art.
In view of the above objects, the present invention first provides a method for sterilizing laundry using a washing machine, comprising:
providing a washing machine with a processing barrel and an air channel which are communicated with each other in space, wherein a rubber door seal is arranged at a feeding port of the processing barrel, an inlet end of the air channel is connected with the processing barrel, an outlet end of the air channel is connected with the door seal, a fan and a heating device are arranged in the air channel, and the fan is positioned at the upstream of the heating device according to the flow direction of airflow blown by the fan;
starting a heating device to heat air around the heating device;
starting a fan to drive air to circularly flow between the processing barrel and the air channel; and
an ozone generating device located in the air passage and upstream of the heating device is activated to generate ozone.
Along with the circulation flow of the air, microorganisms such as odor of volatile organic compounds, bacteria and the like emitted from the clothes in the processing barrel enter the air channel along with the air flow and are subjected to chemical reaction with the ozone. The air deodorized and sterilized by the ozone enters the treatment barrel again. The air channel space is narrower relative to the processing barrel, so the ozone concentration is higher, and the effects of smell removal and sterilization are more ideal.
Advantageously, the ozone flows with the air flow, subsequently through the area where the air heating means are located. In this zone and downstream close to this zone, the gas temperature rises abruptly by the action of the heating means, whereupon a large decomposition begins. The stability of ozone is greatly affected by temperature depending on the chemical characteristics of ozone. The decomposition rate increases with increasing ambient temperature. When the temperature exceeds 100 ℃, the decomposition is very violent, and when the temperature reaches 270 ℃, the decomposition can be immediately converted into oxygen. The temperature in the region of the heating means and downstream regions adjacent the heating means may typically reach or exceed 100 c so that the concentration of ozone is substantially reduced as it passes through the region, and the effect on the rubber seals is substantially reduced as the air stream passes through the seals and eventually enters the treatment tank.
In addition, after the heated air enters the processing barrel, the clothes in the processing barrel are heated, so that the volatilization of peculiar smell in the clothes is accelerated, and meanwhile, part of bacteria can be killed directly.
As an alternative further embodiment, a water spraying device is arranged between the inlet end of the air passage of the washing machine and the fan, and the method comprises the step of starting the water spraying device in the process of generating ozone by the ozone generating device. On one hand, the water spraying device can take away partial organic matters in the air, so that the temperature of the air is reduced, and grease components in the air are solidified and discharged along with water flow. In addition, after the air temperature is reduced, the environment temperature of the ozone generating device is low, the generated ozone is not easy to decompose immediately, and therefore, the ozone generating device has high ozone concentration around the ozone generating device, and can play a better deodorizing and sterilizing effect.
As an alternative further embodiment, the ozone generating device is located above the water spraying device and is located downstream of the water spraying device depending on the direction of the air flow being blown by the fan.
As an alternative further embodiment, the ozone generating means is activated after the heating means is activated and the fan is activated. The heating device is started firstly, so that the air temperature of the area where the heating device is located can be increased, namely an ozone filter screen is formed between ozone and the door seal, and the concentration of the ozone reaching the door seal is reduced. The fan is started first to introduce the odor and/or bacteria emitted from the laundry in the treating tub into the air passage for reaction with the ozone.
The temperature of the air near the ozone generating device is detected, the heating device is turned off when the detection result exceeds a first set value, and the heating device is turned on again when the detection result is lower than a second set value, wherein the first set value is associated with a safe working temperature which does not damage the ozone generating device. The ozone generating device is prevented from being damaged by high temperature. Wherein the second set point may be the same as the first set point.
And detecting the air temperature at the outlet end of the air channel, turning off the heating device when the detection result exceeds a third set value, and turning on the heating device again when the detection result is lower than a fourth set value, wherein the third set value is related to the upper limit value of the tolerance temperature of the rubber material used for the door seal. So set for avoid the door to seal by high temperature damage, ensure simultaneously that heating device can heat to higher temperature to decompose as much ozone as possible. Wherein the fourth setting value may be the same as the third setting value.
The ozone generating device stops generating ozone after working for a period of time, and the heating device and the fan are continuously in a starting state until the concentration of the ozone in the treatment barrel is detected to be lower than a set value. The stop of the ozone generator can be determined according to the time setting, the detected volatile organic compound concentration of the air, and the detected microorganism concentration of the air. As mentioned above, ozone is more susceptible to decomposition at higher temperatures. Meanwhile, ozone is easy to decompose under the action of violent airflow. The continued action of the heating device and the fan can decompose the residual ozone to achieve safe concentration.
In one embodiment, the ozone concentration is measured by a sensor located on the dock seal.
The above sterilization method may further include supplying water droplet particles into the processing tub. The water droplet particles may be in the form of a mist at normal temperature or in the form of steam at high temperature. The water droplet particles are combined with ozone, so that the sterilizing effect is strong, and the wrinkle removing effect is good for clothes, especially in a high-temperature environment.
The invention also provides a washing machine, which is provided with a processing barrel and an air channel which are communicated with each other in space, wherein a rubber door seal is arranged at the opening of the processing barrel, the inlet end of the air channel is connected with the processing barrel, the outlet end of the air channel is connected with the door seal, a fan, an ozone generating device and a heating device are arranged in the air channel, the ozone generating device and the fan are positioned at the upstream of the heating device according to the airflow direction blown by the fan, and the washing machine also comprises a control device which is arranged to perform sterilization operation on clothes in the processing barrel according to the method.
[ description of the drawings ]
Fig. 1 is a simplified schematic diagram of a washing machine.
[ detailed description ] embodiments
As shown in fig. 1, the washing machine 100 has a processing tub 2 accommodating laundry. The input port 21 of the processing barrel is provided with a rubber door seal 3. The inlet end 41 of the air path 4 is connected to the rear or side of the tub 2, and the outlet end 42 is connected to the door seal 3, so that the air path 4 is in spatial communication with the tub 2.
A fan 5 is provided in the air passage 4. The air is continuously circulated through the air passage 4 and the tub 2 by the fan 5. A water spray device 6 for outputting water flow into the air passage 4 is provided below the fan 5. An ozone generating device 7 and a heating device 8 are provided in the air passage 4 in sequence downstream of the fan 5 in accordance with the flow direction of the air flow blown by the fan 5.
The door seal 3 is provided with an atomizing device 9 for supplying water mist into the treating barrel 2. The outlet end 42 of the door seal 3 near the air passage 4 is also provided with an ozone sensor 11 for detecting the concentration of ozone.
The washing machine 100 also has a control device 10 arranged to control the operation of the various electrical controls in accordance with a programmed setting. The control device 10 is preset with a plurality of laundry treatment programs, including a sterilization program.
After the user puts the laundry, which needs to be deodorized and/or sterilized, into the treating tub 2, a sterilizing process can be selected and started. Then, the drum (not shown in the drawings) inside the tub 2 is rotated; the heating device 8 is activated, heating the air surrounding it; the fan 5 is activated to blow air from the treatment tub 2 into the air passage 4, and heated by the heating device 8 to re-enter the treatment tub 2 through the door seal 3.
Thereafter, as the heating device 8 continues to heat up, the temperature of the first section 43 between the region in which the heating device 8 is located up to the outlet end 42 of the air passage 4 increases. When the temperature value detected by the first temperature sensor S1 located in the section is higher than a preset value, for example, 50 ℃, the ozone generating device 7 is activated to produce ozone. The ozone is mixed in the air at a high concentration in the second section 44 between the ozone generating device 7 and the heating device 8 and reacts with organic volatile matters constituting the main body of the bad smell and/or microorganisms including bacteria in the air, thereby eliminating the bad smell in the air and killing the bacteria. Thereafter, the air containing ozone passes through the first section 43 of high temperature, where the ozone is largely decomposed. The air with the ozone concentration greatly reduced finally enters the treatment barrel 2 again through the door seal 3.
To prevent damage to the dock seal 3 from excessive temperatures, the control device 10 monitors the temperature near the outlet end 42 of the air passage 4 via the first temperature sensor S1 to ensure that a certain temperature, for example 90 ℃, is not exceeded. When the temperature measured by the first temperature sensor S1 reaches 90 ℃, the heating device 8 is turned off, after which the heating device 8 is turned back on when the temperature measured by the first temperature sensor S1 is below 90 ℃, or below another safe temperature, for example 60 ℃.
In addition, in order to prevent ozone generating device 7 from being damaged by high temperature, control device 10 monitors the temperature near ozone generating device 7 through second temperature sensor S2 provided near ozone generating device 7, and ensures that the upper limit value of the safe operating temperature of ozone generating device, for example, 75 ℃, is not exceeded. When the temperature measured by the second temperature sensor S2 reaches 75 ℃, the heating device 8 is turned off, after which the heating device 8 is turned back on when the temperature measured by the second temperature sensor S2 is below 75 ℃, or below another safe temperature, for example 50 ℃.
As one of the preferred embodiments, during the operation of the sterilization process, the water spray device 6 is turned on to supply normal temperature water into the air passage 4. Wherein the supply of the water stream is preferably in the form of a spray. The water flow exchanges heat with air flowing nearby, so that oil and fat peculiar smell in the air can be condensed and taken away, and the air temperature is reduced. The lower air temperature prevents damage to the ozone generating means 7 while allowing the ozone to act more stably within the second section 44.
In one preferred embodiment, during the operation of the sterilization procedure, the atomizing device 9 is turned on to supply water mist into the treatment tank 2.
The ozone generating means 7 stops generating ozone after a certain period of time, while the heating means 8 and the fan 5 continue to be activated. Meanwhile, the ozone sensor 11 provided on the door seal 3 continuously monitors the ozone content in the air. When the ozone concentration detected by the ozone sensor 11 is lower than a set value, for example, 0.05ppm, the heating device 8 and the fan 5 are turned off, and the sterilization process is ended. The setpoint may also be slightly above 0.05 ppm. Since the temperature in the treating tub 2 and the air passageway 4 is still high after the heating means 8 is turned off, the decomposition of ozone can be continued. After a certain time, when the ozone concentration measured by the ozone sensor 11 is lower than the safety value of 0.05ppm specified by the national standard, the sterilization program is ended, the door lock is released, and then the user can open the machine door and take out the clothes.
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 (9)
1. A method of sterilizing laundry with a washing machine, comprising:
providing a washing machine with a processing barrel and an air channel which are communicated with each other in space, wherein a rubber door seal is arranged at a feeding port of the processing barrel, an inlet end of the air channel is connected with the processing barrel, an outlet end of the air channel is connected with the door seal, a fan and a heating device are arranged in the air channel, and the fan is positioned at the upstream of the heating device according to the flow direction of airflow blown by the fan;
starting a heating device to heat air around the heating device;
starting a fan to drive air to circularly flow between the processing barrel and the air channel; and
activating an ozone generating device located in the air passage and upstream of the heating device to generate ozone,
wherein the ozone generating device is activated after the heating device and the fan are activated.
2. The method of claim 1, wherein: a water spraying device is arranged between the inlet end of an air channel of the washing machine and the fan, and the method comprises the step of starting the water spraying device in the process of generating ozone by the ozone generating device.
3. The method of claim 2, wherein: the ozone generating device is positioned above the water spraying device and is positioned at the downstream of the water spraying device according to the flow direction of the air flow blown by the fan.
4. The method of claim 1, wherein: the temperature of the air near the ozone generating device is detected, the heating device is turned off when the detection result exceeds a first set value, and the heating device is turned on again when the detection result is lower than a second set value, wherein the first set value is associated with a safe working temperature which does not damage the ozone generating device.
5. The method of claim 1, wherein: and detecting the air temperature at the outlet end of the air channel, turning off the heating device when the detection result exceeds a third set value, and turning on the heating device again when the detection result is lower than a fourth set value, wherein the third set value is related to the upper limit value of the tolerance temperature of the rubber material used for the door seal.
6. The method of claim 1, wherein: the ozone generating device stops generating ozone after working for a period of time, and the heating device and the fan are continuously in a starting state until the concentration of the ozone in the treatment barrel is detected to be lower than a set value.
7. The method of claim 6, wherein: the ozone concentration is measured by a sensor located on the dock seal.
8. The method of claim 1, wherein: including supplying water droplet particles into the processing tank.
9. A washing machine characterized by: having a treatment tub and an air channel in spatial communication, the treatment tub being provided with a rubber door seal at its opening, the air channel being connected at its inlet end to the treatment tub and at its outlet end to the door seal, and the air channel being provided with a fan, an ozone generating device and a heating device, the ozone generating device and the fan being located upstream of the heating device in dependence on the direction of the air flow blown by the fan, and comprising control means arranged to perform a sterilization operation on laundry in the treatment tub in accordance with a method as claimed in any one of claims 1 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711402261.6A CN109957909B (en) | 2017-12-22 | 2017-12-22 | Method for sterilizing clothes by using washing machine and washing machine capable of implementing method |
| EP18213692.9A EP3502334B1 (en) | 2017-12-22 | 2018-12-18 | Method for sterilizing clothing by using washing machine and washing machine capable of implementing the method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711402261.6A CN109957909B (en) | 2017-12-22 | 2017-12-22 | Method for sterilizing clothes by using washing machine and washing machine capable of implementing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109957909A CN109957909A (en) | 2019-07-02 |
| CN109957909B true CN109957909B (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711402261.6A Active CN109957909B (en) | 2017-12-22 | 2017-12-22 | Method for sterilizing clothes by using washing machine and washing machine capable of implementing method |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3502334B1 (en) |
| CN (1) | CN109957909B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111607932A (en) * | 2019-02-25 | 2020-09-01 | 青岛海尔滚筒洗衣机有限公司 | Drum washing machine |
| CN111455615A (en) * | 2020-04-09 | 2020-07-28 | 海信（山东）冰箱有限公司 | Drum washing machine |
| CN111549491A (en) * | 2020-04-17 | 2020-08-18 | 珠海格力电器股份有限公司 | Washing method and washing equipment based on micro-nano bubbles |
| CN111809322A (en) * | 2020-08-11 | 2020-10-23 | 广州市新新洗涤机械有限公司 | Atomizing ozone process equipment |
| CN112941820A (en) * | 2021-01-27 | 2021-06-11 | 珠海格力电器股份有限公司 | Control method of washing and drying machine and washing and drying machine using same |
| CN116356522A (en) * | 2021-12-27 | 2023-06-30 | 青岛海尔洗涤电器有限公司 | Clothes treatment equipment control method and clothes treatment equipment |
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| WO2007043326A1 (en) * | 2005-10-07 | 2007-04-19 | Sanyo Electric Co., Ltd. | Cloth drier, washing machine, and washing machine with cloth drying function |
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| CN101275353A (en) * | 2007-03-30 | 2008-10-01 | 海尔集团公司 | Full-automatic ozone sterilizing washing machine and washing method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109957909A (en) | 2019-07-02 |
| EP3502334B1 (en) | 2020-11-04 |
| EP3502334A1 (en) | 2019-06-26 |
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