CN108842402A - Washing machine drying air duct blockage detection and self-cleaning system and method - Google Patents
Washing machine drying air duct blockage detection and self-cleaning system and method Download PDFInfo
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- CN108842402A CN108842402A CN201810715509.2A CN201810715509A CN108842402A CN 108842402 A CN108842402 A CN 108842402A CN 201810715509 A CN201810715509 A CN 201810715509A CN 108842402 A CN108842402 A CN 108842402A
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- drying
- air
- wind pressure
- cleaning
- air duct
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- 238000001035 drying Methods 0.000 title claims abstract description 148
- 238000004140 cleaning Methods 0.000 title claims abstract description 44
- 238000005406 washing Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 title claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000000903 blocking effect Effects 0.000 claims abstract description 16
- 238000005485 electric heating Methods 0.000 claims abstract description 11
- 239000008399 tap water Substances 0.000 claims description 8
- 235000020679 tap water Nutrition 0.000 claims description 8
- 241000883990 Flabellum Species 0.000 claims description 4
- 238000011897 real-time detection Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000025518 detection of mechanical stimulus involved in sensory perception of wind Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- D06F58/26—Heating arrangements, e.g. gas heating equipment
-
- 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
- D06F58/30—Drying processes
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The invention belongs to the technical field of washing machines, and discloses a system and a method for detecting blockage of a drying air duct of an air conditioner and self-cleaning the drying air duct; the system comprises: the system comprises a drying air inlet duct 1, a drying air outlet duct 2, a drying fan 3, a water inlet pipe 4, an electric heating pipe 5, a thermistor 6, a wind pressure sensor 8 and a unit logic control unit. The invention detects and self-cleans the floc existing in the drying air inlet duct after drying clothes for many times, and utilizes the unit drying water inlet pipe system to judge the blocking condition by detecting the attenuation of the air pressure of the drying fan of the unit and the change of the drying air outlet temperature and carry out self-cleaning.
Description
Technical field
The invention belongs to washing machine technology fields, and in particular to a kind of drying air duct jam detection for air-conditioning, from clear
Wash system and method.
Background technique
A dry body washer is washed because clothing can directly can be dried in washing, drying clothing, eliminates the step to give the clothes an airing
Suddenly, deep to be liked by most of families, the drying integral machine course of work is as follows.For clothes after drying, program will start drying system.
Blower work is dried, the air outside washing machine drum is pumped into drying wind inlet channel, configured with electricity in drying exhaust air flue
Heating or heat pump heating device will be dried the air that blower is sent and heated, be then blown into laundry by drying ducting outlet
In machine cylinder, hot-air seasoning is carried out to clothes.Air after the complete clothes of heating, drying can be oven-dried again blower from drying air duct into
Air port sucking, is continuously worked with this and carries out drying clothing.
Since the hot-air after drying clothes contains a large amount of moisture, when drying system acts on, use in washing machine
A small gangs of tap water can be introduced come the water inlet pipe before washing, while low temperature tap water is past dirty in drying air duct, so that damp
Because the condensation of cooling water becomes drying, temperature reduces wet drying return air.Final flowing water can flow to outside washing machine drum
Inlet be discharged from washing machine.
Although drying system can realize the lasting Hot-blast Heating to clothing, achieve the effect that finally to dry clothing with this,
Be due to drying hot air circulation during be easy to the batting of clothing being brought into wind inlet channel, can be oven-dried blower suction
Attached or blocking wind inlet channel, final the result is that drying air quantity can gradually decay with batting increase, drying blower also can be because
Electrical machinery life is caused to reduce for batting blocking.Some producers can be configured with filter screen structure in drying wind inlet channel, stop to dry
Dry batting enters air duct, if but batting gradually increase, can not effective cleaning can make fan delivery decaying it is more severe.
Patent CN1873085B provide it is a kind of by drying blower housing setting thermistor carry out drying air duct blocking
The method of detection, but this method relies on merely thermistor change in resistance to be determined, is easy by thermistor itself zero
The influence of part reliability.And which has only judged air duct blocking, does not suggest that the method that unit carries out air duct self-cleaning.
Patent CN105506939A indicates the self cleaning method in pump type heat washing machine drying air duct, mainly utilizes condenser
Condensed water is stored in be rinsed, but electric heating type washing-drying integral machine and be not present condenser, this method is in electric heating type machine
It cannot achieve in group.
Summary of the invention
In view of the deficiencies of the prior art, washing machine drying air duct jam detection, Self-cleaning system and the side that the present invention designs
Method carries out detection and self-cleaning in batting object existing after repeated drying clothing mainly for drying wind inlet channel, is utilized
The original drying water inlet guard system of unit passes through the decaying of the drying fan pressure of detection unit and dries the variation of leaving air temp
Carry out stopping state judgement.
The logic can judge automatically whether clothing batting blocks drying air duct, and the self-cleaning program of starting in time is to air duct
The problem of interior batting is cleared up, and is avoided drying service life of fan and is shortened, drying air quantity decaying.It solves and washes in the market
There is clothing batting blocking drying air duct in drying integral machine.
Main technical schemes are as follows：A kind of washing machine drying air duct jam detection, Self-cleaning system, it is characterised in that packet
It includes：Wind inlet channel 1 is dried, exhaust air flue 2 is dried, dries blower 3, water inlet pipe 4, electric heater 5, thermistor 6 and wind pressure pass
Sensor 7 and unit logic control element；The pipeline that wind inlet channel 1 is inner hollow is dried, one end is air inlet, and the other end connects
Connect drying blower 3, the other end connection drying exhaust air flue 2 of drying blower 3；Water inlet pipe 4 and 3 is dried blower and is connect, electric heating
Device 5 is set to the inside of drying exhaust air flue 2, and electric heater is used to heat the air in drying exhaust air flue 2；Temperature-sensitive
Resistance 6 be set to drying exhaust air flue 2 inside and setting with 5 front end of electric heating tube, for detect drying exhaust air flue 2 inside
The temperature of air；Wind pressure sensor 7 is respectively arranged at drying 2 air outlet of exhaust air flue, for detecting the wind pressure of its air outlet；Into
Water pipe 4 is controlled by water inlet valve, for introducing tap water, is drenched the flabellum into drying blower 3, can will be dried the temperature in air duct
It reduces；Unit logic control element respectively with water inlet valve, control electric heater 5, drying blower 3, wind pressure sensor 7, with
And thermistor 6 connects；For controlling the valve, control electric heater 5 and the on-off for drying blower 3 of water inlet pipe 4；Detect wind pressure
The wind pressure of sensor 7 and the temperature of thermistor 6.
A kind of washing machine drying air duct jam detection, method for self-cleaning based on claim 1, includes the following steps：
Step 1：When coming into operation normal execution drying procedure at washing machine initial stage, outlet air wind pressure A when working normally is detected,
When running this drying procedure, when real-time detection outlet air wind pressure >=A, determine to dry at this time in air duct and clog-free；
Step 2:It is detected when continuous 3 times, when outlet air wind pressure < A, is then judged to drying air duct and there is blocking；
Step 3:Washing machine has continued to execute this drying procedure；After having executed drying procedure, electric heater and drying wind are closed
Machine.
Step 4:Execute self-cleaning program；
Step 5:Judge whether there is exception.
Beneficial effect
The present invention can effectively avoid clothing batting blocking drying integral machine drying air duct, and drying service life of fan is caused to shorten,
The problem of drying air quantity decaying.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the structure chart of drying ducting system of the invention；
Fig. 2 is Self-cleaning system system flow chart of the invention；
Wherein in Fig. 1：1 drying wind inlet channel, 2 drying exhaust air flues, 3 drying blowers, 4 water inlet pipes, 5 electric heaters, 6 temperature-sensitives electricity
Resistance, 7 wind pressure sensors
A in Fig. 2：When washing machine initial stage puts into, drying blower works normally wind pressure B：Normal work wind after running cleaning procedure
It presses, wherein 95%A≤B≤A t：The drying air duct leaving air temp T detected after unit operation cleaning procedure：Unit is preset clear
After washing, the leaving air temp of drying blower normal work.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
Embodiment 1
The present invention relates to a kind of washing machines to dry air duct jam detection, Self-cleaning system, as shown in Figure 1, specifically including：Dry into
Exhaust air flue 2 is dried in wind air duct 1, dries blower 3, water inlet pipe 4, electric heater 5, thermistor 6 and wind pressure sensor 7；Drying
Wind inlet channel 1 is the pipeline of inner hollow, and one end is air inlet, and other end connection drying blower 3 dries the other end of blower 3
Connection drying exhaust air flue 2；Drying exhaust air flue 2 is inner hollow pipeline, and one end is air outlet；Water inlet pipe 4 and drying blower 3
Connection, electric heater 5 are set to the inside of drying exhaust air flue 2, and electric heater is used for the air in drying exhaust air flue 2
It is heated；Thermistor 6 be set to drying exhaust air flue 2 inside and setting with 5 front end of electric heating tube, for detect drying
The temperature of the wind be discharged of exhaust air flue 2；Wind pressure sensor 7 is set to drying 2 air outlet of exhaust air flue, for detecting its air outlet
Wind pressure；Water inlet pipe 4 is controlled by water inlet valve, for introducing tap water, is drenched the flabellum into drying blower 3, can will be dried wind
Temperature in road reduces.Unit logic control element respectively with water inlet valve, control electric heater 5, drying blower 3, wind pressure
Sensor 7 and thermistor 6 connect；For controlling the valve of water inlet pipe 4, controlling electric heater 5 and drying the logical of blower 3
It is disconnected；Detect the wind pressure of wind pressure sensor 7 and the temperature of thermistor 6.
Embodiment 2
Below in conjunction with attached drawing and specific implementation method, the present invention will be described in detail, in exemplary embodiment and description of the invention
For explaining the present invention, but it is not as a limitation of the invention.Although showing logical order in the present embodiment,
It in some cases, can be with the steps shown or described are performed in an order that is different from the one herein.
The invention also provides the methods of a kind of washing machine drying air duct jam detection, Self-cleaning system, as shown in Figure 2.
Step 1：It is normal to execute drying procedure, outlet air wind pressure A when working normally is detected, as real-time outlet air wind pressure >=A
When (the outlet air wind pressure of normal work), dry at this time in air duct and clog-free.
When coming into operation at washing machine initial stage, drying procedure is normally being executed, unit logic control element is passed by wind pressure
Sensor 7 detects that outlet air wind pressure is denoted as A when working normally.After washing machine has run multiple periods, user runs drying procedure
When, using the outlet air wind pressure of the detection of wind pressure sensor 7 of drying 2 air outlet front end of exhaust air flue at this time is arranged in, when outlet air wind
When pressure >=normal work outlet air wind pressure A, it was demonstrated that dry have no blocking inside air duct at this time, operate normally drying procedure.
Step 2:When detecting, when the outlet air wind pressure A that outlet air wind pressure < is worked normally, record 1 time, i.e. N=N+1, logic
It is continuous to determine that there are still outlet air wind pressure < 3 times back to the decision procedure (i.e. wind pressure >=A decision block in Fig. 2) of outlet air wind pressure
When the outlet air wind pressure A of normal work, then it is judged to drying air duct and there is blocking.
Step 3:This drying procedure is executed
System can still execute this drying procedure that user has turned at this time, just will do it cleaning journey after having executed drying procedure
Sequence.Drying blower and electric heating are closed after having executed drying procedure.
Step 4:Execute self-cleaning program；
The inlet valve of unit logic control element control water inlet pipe 4 opens to the maximum amplitude, has big stock tap water at this time and drenches into baking
The flabellum of dry-air blast machine 3, and enter drying wind inlet channel 1 and be rinsed, water flow carries over drying wind inlet channel 1 and flows out.It rinses default
Unit logic control element can be again turned on electric heater and drying blower, leaving air temp and wind pressure after detection cleaning after time
Attenuation, when normal work wind pressure B after the cleaning of outlet air wind pressure >=operation, (when washing machine initial stage comes into operation, normally hold
Measured wind pressure of work is denoted as B when row cleaning procedure, and the leaving air temp that drying blower works normally is denoted as T), and examine immediately
The leaving air temp t≤normal working temperature T measured thinks that drying air duct has cleaned up.
In view of factors, the normal work wind pressure B after cleaning such as the long-term running normal blower decaying of washing machine generally compare
Normal work wind pressure A when washing machine initial stage comes into operation is smaller, when B meets:95%A≤B≤A, i.e., it is believed that cleaning up.
Leaving air temp t illustrates that drying air channel volume at this time is larger lower than normal working temperature T, and wind velocity is higher out, and it is dry to meet cleaning
Net status criteria.
Step 5:Judge whether there is exception
After executing the step 4 self-cleaning program, when detecting that leaving air temp and wind pressure are unsatisfactory for the state worked normally,
System will do it the self-cleaning (i.e. self-cleaning 3 times) in three periods, in order to prevent 1 cleaning frequency of progress can not
Guarantee centainly cleans up), after carrying out 3 cleaning frequencies, if system still detects improper working condition
To think not being simple cotton-wool blocking in air duct at this time, it is likely that since there are failures for blower itself, cause air quantity
Decaying.
It is still unsatisfactory for normal operating conditions after the cleaning in system three periods of progress, that is, B < 95%A after cleaning；Or t >
The phenomenon that T, then unit logic control element thinks cleaning, drying air duct and can not eliminate air quantity decaying at this time, it is possible to dry wind
Machine itself is out of order, and unit logic control element can carry out user reminding at display board：" drying fan trouble ".But not
It forces to carry out washing machine shutdown or does not execute drying procedure, user can only be reminded.User's selection is checked or is refused
Comprehend, continue to use drying procedure, only meeting drying effect can give a discount, washing machine operational reliability itself does not have big influence.
Technical characterstic of the invention is：After drying fan pressure decaying accumulation is multiple, logic decision is that possible air duct goes out
Now block, it is repeatedly accumulative to determine wrong report be caused stifled to avoid since the factors such as voltage change cause fan condition to change once in a while
Plug, logic preferentially complete this clothes drying program after reading drying leaving air temp, and the clothes drying program wait run is completed
Afterwards, water inlet valve is opened in unit self-cleaning logic control, introduces a large amount of tap water cleaning, drying air duct.It is pre- to clean a period
If after the time, starting drying blower detects leaving air temp and wind pressure at this time, if wind pressure increases to preset wind pressure value, out
Air temperature reduces certain temperature value than leaving air temp before, it was demonstrated that drying air duct at this time is implicitly present in blocking, and cleans
It finishes.If wind pressure value is after cleaning still less than preset value, and the case where dry leaving air temp there are continuous high temperatures, it was demonstrated that this
Shi Fengliang decaying is not all blocking and causes, it is possible to which the failure of blower itself causes air quantity to decay to main cause, continues to hold
Row cleaning procedure still detects that wind pressure is lower after accumulating three times, and leaving air temp is higher.System can be prompted in display panel
" drying fan trouble " is reminded, but customer still elects to dry, and will not force to stop drying function.Setting drying wind pressure is sentenced
After fixed, the judgement of temperature is also carried out, it is main to consider to be that under normal circumstances, with the increase of wind pressure, wind speed is larger at this time, but wind
Amount is not necessarily very high, if drying blower reaches maximum power at this time, in drying air duct there are still in the case where Partial Blocking, lacks
The wind of amount is very fast across duct velocity, and wind pressure also can be larger, on the whole really without increasing many air quantity, what electric heating at this time generated
Heat can not be taken away completely, can also there is the higher situation of electric heating head temperature.If after cleaning in addition to determining wind pressure,
The judgement of temperature is also carried out, temperature, which reduces, proves that the air quantity in air duct at this time all will not be too low with wind speed, is more than preset wind pressure
Value can illustrate that the blocking inside air duct is cleaned substantially.The logic that combination determines avoids unity logic and determines not
Certainty.
The foregoing is only a preferred embodiment of the present invention, only it is to be understood that, these specific embodiment parties
Formula is only the illustrative explanations to the application, does not constitute any restrictions to the protection scope of the application.Protection model of the invention
Enclose and be not limited thereto, anyone skilled in the art in the technical scope disclosed by the present invention, according to this hair
Bright technical solution and its inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of washing machine dries air duct jam detection, Self-cleaning system, it is characterised in that including：It dries wind inlet channel (1), dries
Dry exhaust air flue (2) are dried blower (3), water inlet pipe (4), electric heater (5), thermistor (6) and wind pressure sensor (7), and
Unit logic control element；Wherein, drying wind inlet channel (1) is the pipeline of inner hollow, and one end is air inlet, other end connection
It dries blower (3), other end connection drying exhaust air flue (2) of drying blower (3)；Drying exhaust air flue (2) is inner hollow
Pipeline, one end are air outlet；Water inlet pipe (4) is connect with drying blower (3), and electric heater (5) is set to drying exhaust air flue (2)
Inside, electric heater be used for drying exhaust air flue (2) in air heat；Thermistor (6), which is set to, dries out
The inside in wind air duct (2) and setting and electric heating tube (5) front end, thermistor (6) are internal for detecting drying exhaust air flue (2)
Air themperature；Wind pressure sensor (7) is set to drying exhaust air flue (2) air outlet, for detecting the wind pressure of its air outlet；Water inlet
Pipe (4) is controlled by water inlet valve, for introducing tap water, is drenched the flabellum into drying blower (3), can will be dried the temperature in air duct
Degree reduces；Unit logic control element is sensed with water inlet valve, control electric heater (5), drying blower (3), wind pressure respectively
Device (7) and thermistor (6) connection；For controlling valve, control electric heater (5) and the drying blower of water inlet pipe (4)
(3) on-off；Detect the wind pressure of wind pressure sensor (7) and the temperature of thermistor (6).
2. a kind of washing machine based on claim 1 dries air duct jam detection, method for self-cleaning, which is characterized in that including such as
Under：When coming into operation normal execution drying procedure at washing machine initial stage, detects outlet air wind pressure A when working normally, running
When this drying procedure, when real-time detection outlet air wind pressure >=A, determine to dry at this time in air duct and clog-free；
It is detected when continuous 3 times, when outlet air wind pressure < A, is then judged to drying air duct and there is blocking；
Washing machine has continued to execute this drying procedure, closes drying blower and electric heating after having executed drying procedure；
Execute self-cleaning program；
The inlet valve of unit logic control element control water inlet pipe 4 opens to the maximum amplitude, and tap water drenches the fan into drying blower 3
Leaf, and enter drying wind inlet channel 1 and be rinsed, water flow carries over drying wind inlet channel 1 and flows out；Unit is patrolled after rinsing preset time
Electric heater 5 and drying blower 3 can be again turned on by collecting control unit, leaving air temp and wind pressure attenuation after detecting cleaning,
When detecting the normal work wind pressure B after outlet air wind pressure >=operation cleaning, and the leaving air temp t≤normal work detected
Temperature T determines that drying air duct has cleaned up.
3. a kind of washing machine according to claim 2 dries air duct jam detection, method for self-cleaning, which is characterized in that clear
Normal work wind pressure A when normal work wind pressure B after washing comes into operation than washing machine initial stage is smaller, i.e.,:95%A≤B≤A.
4. a kind of washing machine according to claim 2 dries air duct jam detection, method for self-cleaning, which is characterized in that also
Including：
Judge whether there is exception；
After having executed self-cleaning program, when detecting that leaving air temp and wind pressure are unsatisfactory for the state worked normally, system meeting
The self-cleaning for carrying out 3 periods, after carrying out 3 cleaning frequencies, if system still detects improper working condition, clearly
Wash rear B < 95%A；Or t > T, then unit logic control element thinks cleaning, drying air duct and can not eliminate air quantity decaying at this time
The phenomenon that, it is that drying blower itself is out of order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810715509.2A CN108842402A (en) | 2018-07-03 | 2018-07-03 | Washing machine drying air duct blockage detection and self-cleaning system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810715509.2A CN108842402A (en) | 2018-07-03 | 2018-07-03 | Washing machine drying air duct blockage detection and self-cleaning system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108842402A true CN108842402A (en) | 2018-11-20 |
Family
ID=64201627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810715509.2A Pending CN108842402A (en) | 2018-07-03 | 2018-07-03 | Washing machine drying air duct blockage detection and self-cleaning system and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108842402A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110438781A (en) * | 2019-09-09 | 2019-11-12 | 珠海格力电器股份有限公司 | Drying air duct, clothes treatment equipment and cleaning method of drying air duct |
| CN110592910A (en) * | 2019-08-30 | 2019-12-20 | 珠海格力电器股份有限公司 | Filter device, method for judging blockage degree of filter device, cleaning method and washing machine |
| CN112899986A (en) * | 2019-11-19 | 2021-06-04 | 博西华电器（江苏）有限公司 | Washing and drying machine |
| CN113718478A (en) * | 2021-10-13 | 2021-11-30 | 北京小米移动软件有限公司 | Drying air duct cleaning method and device, storage medium, electronic equipment and washing machine |
| CN114000313A (en) * | 2021-12-01 | 2022-02-01 | 长虹美菱股份有限公司 | Cleaning method for drying tunnel of roller washing and drying integrated machine |
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Application publication date: 20181120 |