CN109234971B - Method and system for detecting cleanliness of air duct of washing and drying machine and washing and drying machine - Google Patents
Method and system for detecting cleanliness of air duct of washing and drying machine and washing and drying machine Download PDFInfo
- Publication number
- CN109234971B CN109234971B CN201810983449.2A CN201810983449A CN109234971B CN 109234971 B CN109234971 B CN 109234971B CN 201810983449 A CN201810983449 A CN 201810983449A CN 109234971 B CN109234971 B CN 109234971B
- Authority
- CN
- China
- Prior art keywords
- temperature
- fan
- washing
- change rate
- air duct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- 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
-
- 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
-
- 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
-
- 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
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
-
- 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
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
- D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
Abstract
The invention provides a method and a system for detecting air duct cleanliness of a washing and drying machine and the washing and drying machine, wherein the method comprises the steps of obtaining a first corresponding relation between the temperature of a fan and the operation time when the preset washing and drying machine is heated and dried; acquiring a second corresponding relation between the temperature of the fan and the operation time when the current washing and drying machine heats and dries; confirm the cleanliness factor in current wind channel according to first corresponding relation and second corresponding relation to need not the user and unpack the cleanliness factor that the washer just can be judged to the washer-dryer apart, convenience of customers is through judging the wind channel cleanliness factor, cleans according to dirty degree again, in time washes clean with the interior dander of wind channel, improves the reliability of machine, increase of service life, and through clean wind channel, bacterial growing in can effectively inhibiting the cylinder, avoid the clothing to produce secondary pollution in the washing process.
Description
Technical Field
The invention relates to the field of washing and drying machines, in particular to a method and a system for detecting air duct cleanliness of a washing and drying machine and the washing and drying machine.
Background
The washing and drying machine is a combination product of a washing machine and a clothes dryer, and can dry clothes after washing, please refer to fig. 1, fig. 1 is a conventional washing and drying machine which generally adopts a closed circulation structure and comprises a fan 1, an electric heater 2 and a drum 3, the components are connected into a whole through an air duct, the air duct is a circulation air duct and comprises a front air duct 4 and a rear air duct 5, air blown out by the fan 1 becomes high-temperature low-humidity gas through the electric heater 2, the high-temperature low-humidity gas passes through the drum 3 to take away moisture on clothes in the drum 3, the low-temperature low-humidity air is dehydrated in the rear air duct 5 and returns to the fan 1 to be sequentially circulated. In the long-time use process of the washing and drying machine, foreign matters are gradually accumulated in the air duct, so that the clothes drying performance of the washing and drying machine is greatly reduced, and bacteria are easily bred to harm health.
The inside unable direct observation of the wind channel of washer-dryer, therefore the user can't learn whether the wind channel needs to be cleaned, detects the cleanliness factor of washer-dryer under the condition of not taking apart the washer-dryer among the prior art.
Therefore, detecting the cleanliness of the air duct of the washing and drying machine without disassembling the washing and drying machine is a problem to be solved in the field.
Disclosure of Invention
The invention provides a method and a system for detecting the cleanliness of an air duct of a washing and drying machine and the washing and drying machine, which can detect the cleanliness of the air duct of the washing and drying machine without disassembling the washing and drying machine.
In order to solve the above problems, as an aspect of the present invention, there is provided a method for detecting cleanliness of an air duct of a washer dryer, the washer dryer including a fan, comprising:
acquiring a first corresponding relation between the temperature of a fan and the running time when a preset washing and drying machine heats and dries;
acquiring a second corresponding relation between the temperature of the fan and the operation time when the current washing and drying machine heats and dries;
and determining the cleanliness of the current air duct according to the first corresponding relation and the second corresponding relation.
Optionally, the first corresponding relationship includes: the method comprises the steps of presetting a first temperature change rate of the temperature of a fan in each cycle when a washer dryer heats and dries.
Optionally, the second corresponding relationship includes: and when the current washing and drying machine is used for heating and drying, the temperature of the fan is at the second temperature change rate in each cycle period.
Optionally, determining the cleanliness of the current air duct according to the first corresponding relationship and the second corresponding relationship, including:
and determining the cleanliness of the current air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle period.
Optionally, determining the cleanliness of the current air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle period includes:
acquiring the number of cycle periods with the first temperature change rate larger than the second temperature change rate as a first statistical value;
determining the cleanliness of the air duct according to the first statistical value;
wherein the first statistical value is inversely proportional to the cleanliness of the air duct.
Optionally, determining the cleanliness of the current air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle period includes:
and when the first temperature change rate of the N continuous circulation periods is greater than the second temperature change rate, the air duct is in a dirty blocking state.
Optionally, the washing and drying machine is a roller washing and drying machine, and the cycle period is a rotation period of the roller.
The application still provides a system for detect washer-dryer wind channel cleanliness factor, and the washer-dryer includes the fan, includes:
the first acquisition unit is used for acquiring a first corresponding relation between the temperature of the fan and the running time when the preset washing and drying machine heats and dries;
the second acquisition unit is used for acquiring a second corresponding relation between the temperature of the fan and the running time when the current washing and drying machine heats and dries;
and the evaluation unit is used for determining the cleanliness of the current air duct according to the first corresponding relation and the second corresponding relation.
Optionally, the first corresponding relationship includes: the method comprises the steps of presetting a first temperature change rate of the temperature of a fan in each cycle when a washer dryer heats and dries.
Optionally, the second corresponding relationship includes: and when the current washing and drying machine is used for heating and drying, the temperature of the fan is at the second temperature change rate in each cycle period.
Optionally, the determining, by the evaluation unit, the cleanliness of the current air duct according to the first corresponding relationship and the second corresponding relationship includes:
and determining the cleanliness of the current air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle period.
Optionally, the determining, by the evaluation unit, the cleanliness of the current air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle period includes:
acquiring the number of cycle periods with the first temperature change rate larger than the second temperature change rate as a first statistical value;
determining the cleanliness of the air duct according to the first statistical value;
wherein the first statistical value is inversely proportional to the cleanliness of the air duct.
Optionally, the determining, by the evaluation unit, the cleanliness of the current air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle period includes:
and when the first temperature change rate of the N continuous circulation periods is greater than the second temperature change rate, the air duct is in a dirty blocking state.
Optionally, the washing and drying machine is a roller washing and drying machine, and the cycle period is a rotation period of the roller.
The invention also provides a washing and drying machine, which comprises a processor, a memory and a program stored on the memory and capable of working on the processor, wherein the processor executes the program to realize the steps of any method provided by the invention.
The invention also provides a washing and drying machine comprising any one of the systems provided by the invention.
The invention provides a method and a system for detecting the cleanliness of an air duct of a washing and drying machine and the washing and drying machine, wherein the cleanliness of the washing and drying machine can be judged without disassembling the washing and drying machine by a user, the user can conveniently and timely flush the flock in the air duct by judging the cleanliness of the air duct and cleaning according to the dirt degree, the reliability of the machine is improved, the service life is prolonged, and the air duct is cleaned, so that the bacterial growth in a roller can be effectively inhibited, and the secondary pollution of clothes in the washing process is avoided.
Drawings
FIG. 1 is a schematic diagram of a washer dryer of the prior art;
FIG. 2 is a flowchart of a method for detecting cleanliness of an air duct of a washer dryer according to an embodiment of the present invention;
fig. 3 is a diagram illustrating a system for detecting cleanliness of an air duct of a washing and drying machine according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or article that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or article.
In order to solve the problem that the air duct cleanliness of the washing and drying machine in the prior art is difficult to directly detect, the application provides a method for detecting the air duct cleanliness of the washing and drying machine, the washing and drying machine comprises a fan, please refer to fig. 2, and the method provided by the application comprises the following steps:
s10: and acquiring a first preset corresponding relation between the temperature of the fan and the running time when the washing and drying machine heats and dries.
The first corresponding relation in the application can comprise the corresponding relation between the temperature of the fan and the running time when the washing and drying machine is used for heating and drying in a clean state; the preset first relation has the effects that a reference standard is established, the cleanliness of the air duct of the washing and drying machine in different states is evaluated by taking the reference standard as a reference, the air duct is in a clean state, for example, the air duct can be in a state after the washing and drying machine is just purchased, or in a state after the washing and drying machine is thoroughly cleaned by workers, foreign matters are not accumulated in the air duct of the washing and drying machine in the clean state, and germs are not bred. And starting the fan of the washing and drying machine to work in the state, and synchronously starting timing, wherein the running time is the temperature of the fan at each moment in the process from starting to shutting down, and the temperature of the fan can be detected by an infrared temperature sensor or a temperature sensing bulb is arranged at the fan to detect the temperature of the fan. The first corresponding relationship between the temperature at the fan and the operation time may be the temperature at the fan corresponding to different operation times after the fan starts to work in the primary air-drying task, for example, the temperature at the fan is 10 ℃ at the initial temperature in the primary air-drying task, 15 ℃ after 1 hour, 25 ℃ after 2 hours, and so on. The first corresponding relation between the temperature at the fan and the operation time can also be a corresponding relation between the temperature change rate at the fan and the operation time, for example, the temperature acceleration of the temperature at the fan in the first minute after the fan is started is 5 ℃/min, the temperature acceleration of the temperature at the fan in the second minute is 10 ℃/min, the corresponding relation between the temperature change at the fan and the operation time can be represented by a first temperature-time curve, the temperature at the fan at different operation times can be displayed in a curve mode, for example, the temperature at the fan corresponding to different operation times during heating and drying can be counted, the collected operation time and the temperature data at the fan can be fitted into a straight line, and therefore, a user can conveniently and visually check the corresponding relation between the operation time and the temperature.
S20: and acquiring a second corresponding relation between the temperature of the fan and the running time when the current washing and drying machine heats and dries.
In the present application, the second corresponding relationship and the first corresponding relationship, that is, the corresponding relationship when the air duct is in a clean state, may be the same or similar corresponding relationship. Preferably, the same correspondence relationship is adopted, for example, the temperatures at the fans corresponding to different times in different operation times or the temperature change speeds at the fans corresponding to different times in different operation times may be adopted. It should be noted that, in order to improve the detection accuracy, when the air duct is in a clean state, the amount of the laundry in the drum of the washing and drying machine should be the same as or similar to the amount of the laundry currently in the drum of the washing and drying machine, and the water content of the laundry should be the same as or similar to the water content of the laundry, that is, the load in the washing and drying machine corresponding to the first corresponding relationship is the same as the load in the washing and drying machine corresponding to the second corresponding relationship, and the first corresponding relationship and the second corresponding relationship are preferably both corresponding to the corresponding relationship between the temperature at the fan and the operation time when no laundry is loaded in the drum.
S30: and determining the cleanliness of the current air duct according to the first corresponding relation and the second corresponding relation.
In this embodiment, after the first corresponding relationship and the second corresponding relationship are determined, the relationship between the temperature of the fan and the operation time in the clean state and the corresponding relationship between the temperature of the fan and the operation time in the current state are known, if the two corresponding relationships are the same or close, the cleanliness of the air duct is high, and if the two corresponding relationships differ far, the cleanliness of the air duct and the cleanliness of the clean state are far, the dirty and blocked condition is serious, cleaning is required, and generally, when the air duct is in the dirty and blocked state, the air speed is reduced, and the temperature rise of the temperature of the fan is slow. When the method provided by the application is used, the clean state of the air channel in the washing and drying machine can be checked without disassembling the washing and drying machine, so that a user can conveniently arrange time for cleaning the air channel correspondingly.
Preferably, in some optional embodiments, the first correspondence relationship comprises: and when the washing and drying machine is heated and dried, the temperature of the fan is at a first temperature change rate in each cycle.
In this embodiment, the heating and drying operation of the washing and drying machine is a continuously and cyclically repeated process, so the operation time of the washing and drying machine may be composed of a plurality of cycles, any cycle may be, for example, the time when the drum of the washing and drying machine is normally installed once and reversely rotated once, the washing and drying machine continuously repeats the forward rotation and the reverse rotation of the drum during the drying of the laundry, the cycle may also be any preset time duration, for example, five minutes is set as one cycle, the temperature at the blower is detected every five minutes, so as to determine the temperature variation value of the blower in each cycle as the first variation, or one cycle may be the time when the air is blown out from the blower to return to the blower. The first variation may be the temperature at the fan at the end of the cycle minus the temperature at the fan at the beginning of the cycle, the temperature at the fan may be collected every other cycle, and the end point of one cycle may be the start point of another cycle. The first rate of temperature change is the rate of temperature change, i.e., how quickly the temperature increases or decreases, during any cycle. If the air duct is in a clean state, the temperature of the fan of the washing and drying machine will rise quickly, and when the air duct is partially blocked, the rising speed of the temperature of the fan will be reduced. The inventor of this application discovers through long-time experiments, the washer-dryer is under the temperature environment of difference, fan department temperature value receives ambient temperature's influence, but in the course of the work of washer-dryer heating stoving, the change volume and the change speed of fan department temperature are not big with ambient temperature relation, consequently be used in the clean state washer-dryer first temperature change rate in each cycle as reference data, can shield the influence of different ambient temperature to washer-dryer fan department temperature, make reference data irrelevant with ambient temperature, thereby the clean state in accurate aassessment washer-dryer wind channel.
Preferably, in some optional embodiments, the second correspondence relationship includes: when the washing and drying machine is heated and dried, the temperature of the fan is at a second temperature change rate in each cycle period.
In this embodiment, the first corresponding relationship and the second corresponding relationship are the same type of data, so when the first corresponding relationship includes a first temperature change rate of the temperature at the fan in each cycle, the second corresponding relationship is a second temperature change rate similar to the first temperature change rate, the two data are obtained by the same method, and preferably, the environmental conditions and the number and weight of the clothes in the washer dryer are the same or similar when the first temperature change rate and the second temperature change rate are obtained. The first temperature change rate and the second temperature change rate are the same type of data, and the acquisition methods are the same, so that the influence of the ambient temperature on the detection data can be shielded, namely the detection data is irrelevant to the ambient temperature, the evaluation result of the air duct cleanliness is more objective and accurate, the first temperature change rate and the second temperature change rate exist in any cycle period of the temperature at the fan, the first temperature change rate and the acquisition time are different from the acquisition time of the second temperature change rate, and other environmental conditions are the same or similar, so that the air duct cleanliness state when the first temperature change rate acquisition time is determined can be determined. It should be noted that the preset drying time period for heating and drying by the washing and drying machine may be the same as or different from the current drying time period for heating and drying by the washing and drying machine, and preferably, the drying time period is the same as, and the drying time period is composed of a plurality of cycle periods.
Preferably, in some optional embodiments, determining the cleanliness of the air duct according to the first corresponding relationship and the second corresponding relationship includes: and determining the cleanliness of the current air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle. In this embodiment, the temperature at the fan corresponds to a first temperature change rate and a second temperature change rate in each cycle period, where the first temperature change rate represents a rate at which the temperature at the fan changes with the operating time when the air duct is in a clean state, and the second temperature change rate represents a rate at which the temperature at the fan changes with the operating time at the present moment, and when the air duct is in different cleanliness degrees, rates at the fan and the operating time are different, the more serious the air duct is blocked, that is, the lower the cleanliness degree of the air duct is, the lower the flow rate of the air flow is, the longer the time required for the air flow to start from the fan to return to the fan is, so that the temperature of the air flow is easier to be reduced, and the lower the temperature of the air flow returns to the fan, so that the temperature rise rate of the temperature at the fan is slower, and after the first temperature change rate when the air duct is in a clean state is obtained, the air duct cleaning device can be used as a detection standard, the filth blockage condition of the current air duct can be determined by comparing the difference value of the second temperature change rate and the first temperature change rate, namely the cleanliness condition of the air duct, a user does not need to disassemble the washing and drying machine to observe the cleanliness of the air duct, and the user can conveniently arrange the time for cleaning the air duct.
Preferably, in some optional embodiments, determining the current cleanliness of the air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle includes:
acquiring the number of cycle periods with the first temperature change rate larger than the second temperature change rate as a first statistical value;
determining the cleanliness of the air duct according to the first statistical value;
wherein the first statistical value is inversely proportional to the cleanliness of the air duct.
Because the temperature rise speed at the fan is lower when the air duct is dirty and blocked, for any circulation period, when the air duct is dirty and blocked, namely the cleanliness is not high, the second temperature change rate is lower than the first temperature change rate generally, the dirty and blocked condition is more serious, namely the cleanliness of the air duct is lower, the circulation periods that the first temperature change rate is higher than the second temperature change rate are more, and therefore the cleanliness of the air duct can be evaluated by counting the first statistical value, and the quantitative analysis of the cleanliness of the air duct is realized.
Preferably, in some optional embodiments, determining the current cleanliness of the air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle includes:
and when the first temperature change rate of the N continuous circulation periods is greater than the second temperature change rate, the air duct is in a dirty blocking state. In the actual detection process, due to the fluctuation of the ambient temperature and the fluctuation of the voltage, when the air duct is still in a clean state, the second temperature change rate is smaller than the first temperature change rate, but the time for the situation is often short, but if the air duct is in a dirty and blocked state, the second temperature change rate is smaller than the first temperature change rate for a long time, so that the dirty and blocked situation of the air duct can be judged by judging the numerical value of N, preferably, the value of N is compared with the first threshold value, thereby eliminating the misjudgment caused by the fluctuation of the ambient temperature and the fluctuation of the voltage, and improving the judgment precision and the accuracy. Optionally, in the present application, the washing and drying machine is a drum washing and drying machine, the cycle period is a rotation period of the drum, and the rotation period may be a time of rotating the drum in a forward direction and a reverse direction.
A preferred embodiment of the present application is set forth below.
The observation shows that the temperature of the fan detected by the temperature sensing bulb rises sharply when the washing and drying machine is in a clean state and is gradually stabilized at the temperature in the early stage of drying until the preset temperature value is reached. In the later drying stage, the clothes are gradually dried, the heat exchange is reduced, and the temperature rises to a small extent.
When the air duct is dirty and blocked for drying, the temperature of the fan detected by the thermal bulb slowly rises and gradually stabilizes at a certain temperature in the early stage of drying. In the later drying stage, the clothes are gradually dried, the heat exchange is reduced, but because the air duct is dirty and blocked, the hot air is blocked, and the fan value cannot rise again.
At the beginning stage of drying, the temperature of the fan is higher and higher in a clean state, the change rate is higher and lower, the fan basically does not change when reaching a stable state, and the temperature change rate is slightly increased when clothes are dried. Under the condition of filth blockage, the temperature of the fan is slowly increased, the change rate is small and is in a descending trend, and the fan does not change when reaching a stable state until the end.
According to the principle, a large amount of experimental data are collected, and the change rate of the temperature when the clothes are dried is calculated and used for judging the dirty and blocked air channels.
When the washing and drying machine is heated and dried, the roller of the washing and drying machine rotates positively and negatively, and the positive rotation and the negative rotation are changed into a cycle period. Through data acquisition, when the air duct is in a clean state and the temperature change rate of the fan in each cycle period is analyzed and determined when the washing and drying machine heats and dries, and fitting is carried out, wherein i is k1t+c1(example: t ∈ [1,30 ]])、i＝k2t+c2(example: t ∈ (30, 60)]) Wherein iThe first rate of change of temperature at the fan, t is the number of cycles 1, 2, 3 … n-1, n. I is constant in each cycle period, but the value of i is different constant for each cycle period.
At the beginning of the heating and drying of the current washing and drying machine, the electric heating is started, the roller rotates forwards and backwards, the forward rotation and the reverse rotation are a period, the controller collects the temperature value of the fan at the forward rotation and the reverse rotation every time from the beginning of the drying, and calculates the second temperature change rate of the temperature of the fan at every cycle, when the second temperature change rate meeting the continuous N cycles is smaller than the first temperature change rate, the drying air duct is considered dirty and blocked, the machine is stopped, the dirty and blocked fault is reported, and the user is reminded to clean the air duct. If the condition is not met, normal drying is continued.
The application provides a system for detecting air duct cleanliness of a washing and drying machine, wherein the washing and drying machine comprises a fan, please refer to fig. 3, and the system provided by the application comprises: a first acquisition unit 100, a second acquisition unit 200 and an evaluation unit 300.
The first obtaining unit 100 is configured to obtain a preset first corresponding relationship between a temperature of the fan and an operation time when the washing and drying machine heats and dries.
The first corresponding relation in the application can be the corresponding relation between the temperature of the fan and the running time when the washing and drying machine is in a clean state for heating and drying; the preset first relation has the effects that a reference standard is established, the cleanliness of the air duct of the washing and drying machine in different states is evaluated by taking the reference standard as a reference, the air duct is in a clean state, for example, the air duct can be in a state after the washing and drying machine is just purchased, or in a state after the washing and drying machine is thoroughly cleaned by workers, foreign matters are not accumulated in the air duct of the washing and drying machine in the clean state, and germs are not bred. And starting the fan of the washing and drying machine to work in the state, and synchronously starting timing, wherein the running time is the temperature of the fan at each moment in the process from starting to shutting down, and the temperature of the fan can be detected by an infrared temperature sensor or a temperature sensing bulb is arranged at the fan to detect the temperature of the fan. The first corresponding relation between the temperature of the fan and the operation time can be the temperature of the fan corresponding to different operation time lengths of the fan after the fan starts to work in the primary air drying task, for example, the initial temperature of the fan in the primary air drying task is 10 ℃, the temperature of the fan is 15 ℃ after 1 hour, the temperature of the fan is 25 ℃ after 2 hours, and the like. The first corresponding relation between the temperature at the fan and the operation time can also be a corresponding relation between the temperature change rate at the fan and the operation time, for example, the temperature acceleration of the fan in the first minute after the fan is started is 5 ℃/min, the temperature acceleration of the fan in the second minute is 10 ℃/min, the corresponding relation between the temperature change at the fan and the operation time can be represented by a first temperature-time curve, the temperature at the fan in different operation times can be displayed in a curve mode, for example, the temperature at the fan in different operation times corresponding to heating and drying can be counted, the collected operation time and the temperature data at the fan can be fitted into a straight line, and therefore, a user can conveniently and visually check the corresponding relation between the operation time and the temperature at the fan.
The second obtaining unit 200 is configured to obtain a second corresponding relationship between the temperature of the fan and the operation time when the current washer dryer heats and dries.
In the present application, the second corresponding relationship and the first corresponding relationship, that is, the corresponding relationship when the air duct is in a clean state, may be the same or similar corresponding relationship. Preferably, the same correspondence relationship is adopted, for example, the temperatures at the fans corresponding to different times in different operation times or the temperature change speeds at the fans corresponding to different times in different operation times may be adopted. It should be noted that, in order to improve the detection accuracy, the amount of the laundry in the drum of the washing and drying machine should be equal to or similar to the amount of the laundry in the drum of the current washing and drying machine when the blower is in a clean state, and the water content of the laundry should be equal to or similar to each other, that is, the load in the washing and drying machine corresponding to the first corresponding relationship is equal to the load in the washing and drying machine corresponding to the second corresponding relationship, and the first corresponding relationship and the second corresponding relationship are preferably the corresponding relationship between the temperature at the blower and the operation time when no laundry is loaded in the drum.
The evaluation unit 300 is configured to determine the cleanliness of the wind tunnel according to the first corresponding relationship and the second corresponding relationship.
In this embodiment, after the first corresponding relationship and the second corresponding relationship are determined, the relationship between the temperature of the fan and the operation time in the clean state and the corresponding relationship between the temperature of the fan and the operation time in the current state are known, if the two corresponding relationships are the same or close, the cleanliness of the air duct is high, and if the two corresponding relationships differ far, the cleanliness of the air duct and the cleanliness of the clean state are far, the dirty and blocked condition is serious, cleaning is required, and generally, when the air duct is in the dirty and blocked state, the air speed is reduced, and the temperature rise of the temperature of the fan is slow. When the system provided by the application is used, the clean state of the air channel in the washing and drying machine can be checked without disassembling the washing and drying machine, so that a user can conveniently clean the air channel according to the arrangement time.
Preferably, in some optional embodiments, the first correspondence relationship comprises: and when the washing and drying machine is heated and dried, the temperature of the fan is at a first temperature change rate in each cycle.
In this embodiment, the heating and drying operation of the washing and drying machine is a continuously and cyclically repeated process, so the operation time of the washing and drying machine may be composed of a plurality of cycles, any cycle may be, for example, the time when the drum of the washing and drying machine is normally installed once and reversely rotated once, the washing and drying machine continuously repeats the forward rotation and the reverse rotation of the drum during the drying of the laundry, the cycle may also be any preset time duration, for example, five minutes is set as one cycle, the temperature at the blower is detected every five minutes, so as to determine the temperature variation value of the blower in each cycle as the first variation, or one cycle may be the time when the air is blown out from the blower to return to the blower. The first variation may be the temperature at the fan at the end of the cycle minus the temperature at the fan at the beginning of the cycle, the temperature at the fan may be collected every other cycle, and the end point of one cycle may be the start point of another cycle. The first rate of temperature change is the rate of temperature change, i.e., how quickly the temperature increases or decreases, during any cycle. If the air duct is in a clean state, the temperature of the fan of the washing and drying machine will rise quickly, and when the air duct is partially blocked, the rising speed of the temperature of the fan will be reduced. The inventor of this application discovers through long-time experiments, the washer-dryer is under the temperature environment of difference, fan department temperature value receives ambient temperature's influence, but in the course of the work of washer-dryer heating stoving, the change volume and the change speed of fan department temperature are not big with ambient temperature relation, consequently be used in the clean state washer-dryer first temperature change rate in each cycle as reference data, can shield the influence of different ambient temperature to washer-dryer fan department temperature, make reference data irrelevant with ambient temperature, thereby the clean state in accurate aassessment washer-dryer wind channel.
Preferably, in some optional embodiments, the second correspondence relationship includes: when the washing and drying machine is heated and dried, the temperature of the fan is at a second temperature change rate in each cycle period.
In the present embodiment, the first corresponding relationship and the second corresponding relationship are the same type of data, so when the first corresponding relationship includes a first temperature change rate of the temperature at the fan in each cycle, the second corresponding relationship is a second temperature change rate similar to the first temperature change rate, the obtaining systems of the two data are the same, and preferably, the environmental conditions and the number and weight of the clothes in the washer dryer are the same or similar when the first temperature change rate and the second temperature change rate are obtained. The first temperature change rate and the second temperature change rate are the same type of data and the acquisition system is the same, so that the influence of the ambient temperature on the detection data can be shielded, namely the detection data is irrelevant to the ambient temperature, the evaluation result of the air duct cleanliness is more objective and accurate, the first temperature change rate and the second temperature change rate exist in any cycle period of the temperature at the fan, the first temperature change rate and the acquisition time are different from the acquisition time of the second temperature change rate, and other environmental conditions are the same or similar, so that the air duct cleanliness state when the first temperature change rate acquisition time is determined can be determined. It should be noted that the preset drying time period for heating and drying by the washing and drying machine may be the same as or different from the current drying time period for heating and drying by the washing and drying machine, and preferably, the drying time period is the same as, and the drying time period is composed of a plurality of cycle periods.
Preferably, in some optional embodiments, the determining, by the evaluation unit 300, the cleanliness of the wind tunnel according to the first corresponding relationship and the second corresponding relationship includes: and determining the cleanliness of the current air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle. In this embodiment, the temperature at the fan corresponds to a first temperature change rate and a second temperature change rate in each cycle period, the first temperature change rate represents a rate of change of the temperature at the fan with operation time when the air duct is in a clean state, the second temperature change rate represents a rate of change of the temperature at the fan with operation time at the current moment, when the fan is in different cleanliness degrees, the rate of change of the temperature at the fan with operation time is different, the more serious the air duct is blocked, that is, the lower the cleanliness degree of the air duct is, the lower the flow rate of the air flow is, the longer the time required for the air flow to start from the fan to return to the fan is, so that the temperature of the air flow is easier to be reduced, and the lower the temperature of the air flow returns to the fan, so that the temperature rise rate of the temperature at the fan is slower, after the first temperature change rate when the air duct is in a clean state is obtained, the air duct cleaning device can be used as a detection standard, the filth blockage condition of the current air duct can be determined by comparing the difference value of the second temperature change rate and the first temperature change rate, namely the cleanliness condition of the air duct, a user does not need to disassemble the washing and drying machine to observe the cleanliness of the air duct, and the user can conveniently arrange the time for cleaning the air duct.
Preferably, in some optional embodiments, the determining, by the evaluation unit 300, the cleanliness of the wind tunnel currently according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle includes:
acquiring the number of cycle periods with the first temperature change rate larger than the second temperature change rate as a first statistical value;
determining the cleanliness of the air duct according to the first statistical value;
wherein the first statistical value is inversely proportional to the cleanliness of the air duct.
Because the temperature rise speed at the fan is lower when the air duct is dirty and blocked, for any circulation period, when the air duct is dirty and blocked, namely the cleanliness is not high, the second temperature change rate is lower than the first temperature change rate generally, the dirty and blocked condition is more serious, namely the cleanliness of the air duct is lower, the circulation periods that the first temperature change rate is higher than the second temperature change rate are more, and therefore the cleanliness of the air duct can be evaluated by counting the first statistical value, and the quantitative analysis of the cleanliness of the air duct is realized.
Preferably, in some optional embodiments, the determining, by the evaluation unit 300, the cleanliness of the wind tunnel currently according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle includes:
and when the first temperature change rate of the N continuous circulation periods is greater than the second temperature change rate, the air duct is in a dirty blocking state. In the actual detection process, due to the fluctuation of the ambient temperature and the fluctuation of the voltage, when the air duct is still in a clean state, the second temperature change rate is smaller than the first temperature change rate, but the time for the situation is often short, but if the air duct is in a dirty and blocked state, the second temperature change rate is smaller than the first temperature change rate for a long time, so that the dirty and blocked situation of the air duct can be judged by judging the numerical value of N, preferably, the value of N is compared with the first threshold value, thereby eliminating the misjudgment caused by the fluctuation of the ambient temperature and the fluctuation of the voltage, and improving the judgment precision and the accuracy. Optionally, in the present application, the washing and drying machine is a drum washing and drying machine, the cycle period is a rotation period of the drum, and the rotation period may be a time of rotating the drum in a forward direction and a reverse direction.
The application also provides a washing and drying machine which is characterized by comprising a processor, a memory and a program which is stored on the memory and can work on the processor, and the processor realizes the steps of any method provided by the application when executing the program. The present application also provides a washer dryer characterized in that it comprises any of the systems presented in the present application.
The invention provides a method and a system for detecting the cleanliness of an air duct of a washing and drying machine and the washing and drying machine, wherein the cleanliness of the washing and drying machine can be judged without disassembling the washing and drying machine by a user, the user can conveniently and timely flush the flock in the air duct by judging the cleanliness of the air duct and cleaning according to the dirt degree, the reliability of the machine is improved, the service life is prolonged, and the air duct is cleaned, so that the bacterial growth in a roller can be effectively inhibited, and the secondary pollution of clothes in the washing process is avoided.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A method for detecting cleanliness of an air duct of a washing and drying machine, wherein the washing and drying machine comprises a fan, and the method is characterized by comprising the following steps:
acquiring a first preset corresponding relation between the temperature of a fan and the running time when the washing and drying machine is heated and dried;
acquiring a second corresponding relation between the temperature of the fan and the running time when the washing and drying machine is heated and dried currently;
determining the cleanliness of the current air duct according to the first corresponding relation and the second corresponding relation;
the first correspondence includes: presetting a first temperature change rate of the temperature of the fan in each cycle period when the washing and drying machine heats and dries;
the second correspondence includes: when the washing and drying machine is heated and dried, the temperature of the fan is at a second temperature change rate in each cycle period;
determining the cleanliness of the current air duct according to the first corresponding relation and the second corresponding relation, wherein the determining step comprises the following steps:
determining the cleanliness of the current air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle period;
determining the cleanliness of the current air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle period, wherein the determining comprises the following steps:
and when the first temperature change rate of the N continuous circulation periods is greater than the second temperature change rate, the air duct is in a dirty blocking state.
2. The method of detecting duct cleanliness of a washer dryer as claimed in claim 1, wherein the washer dryer is a drum washer dryer and the cycle period is a rotation period of a drum.
3. The utility model provides a detect system of washer-dryer wind channel cleanliness factor, the washer-dryer includes the fan, its characterized in that includes:
the first acquisition unit is used for acquiring a preset first corresponding relation between the temperature of the fan and the running time when the washing and drying machine heats and dries;
the second acquisition unit is used for acquiring a second corresponding relation between the temperature of the fan and the running time when the washing and drying machine heats and dries at present;
the evaluation unit is used for determining the cleanliness of the current air duct according to the first corresponding relation and the second corresponding relation;
the first correspondence includes: presetting a first temperature change rate of the temperature of the fan in each cycle period when the washing and drying machine heats and dries;
the second correspondence includes: when the washing and drying machine is heated and dried, the temperature of the fan is at a second temperature change rate in each cycle period;
the evaluation unit determines the cleanliness of the current air duct according to the first corresponding relation and the second corresponding relation, and the determination includes:
determining the cleanliness of the current air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle period;
the evaluation unit determines the cleanliness of the current air duct according to the first temperature change rate and the second temperature change rate of the temperature at the fan in each cycle period, and the determination includes:
and when the first temperature change rate of the N continuous circulation periods is greater than the second temperature change rate, the air duct is in a dirty blocking state.
4. The system for detecting cleanliness of a washer dryer duct according to claim 3, wherein the washer dryer is a drum washer dryer, and the cycle period is a rotation period of the drum.
5. A washer dryer comprising a processor, a memory and a program stored on the memory and operable on the processor, the processor when executing the program implementing the steps of the method of any of claims 1-2.
6. A washer dryer comprising a system according to any of claims 3-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810983449.2A CN109234971B (en) | 2018-08-27 | 2018-08-27 | Method and system for detecting cleanliness of air duct of washing and drying machine and washing and drying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810983449.2A CN109234971B (en) | 2018-08-27 | 2018-08-27 | Method and system for detecting cleanliness of air duct of washing and drying machine and washing and drying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109234971A CN109234971A (en) | 2019-01-18 |
| CN109234971B true CN109234971B (en) | 2020-07-28 |
Family
ID=65069545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810983449.2A Active CN109234971B (en) | 2018-08-27 | 2018-08-27 | Method and system for detecting cleanliness of air duct of washing and drying machine and washing and drying machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109234971B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115137267B (en) * | 2022-07-13 | 2024-03-26 | 浙江欣奕华智能科技有限公司 | Obstacle avoidance walking method and device of cleaning robot, electronic equipment and medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070083013A (en) * | 2006-02-20 | 2007-08-23 | 엘지전자 주식회사 | Drying machine and control method for the same |
| CN101139792A (en) * | 2006-09-06 | 2008-03-12 | Lg电子株式会社 | Clogging detecting system for dryer |
| CN101929060A (en) * | 2010-08-03 | 2010-12-29 | 海尔集团公司 | Method for intelligently prompting trash line clearup for clothes dryer and clothes dryer |
| CN103361950A (en) * | 2012-03-30 | 2013-10-23 | 三星电子株式会社 | Clothing dryer and blockage detection method thereof |
| CN104562606A (en) * | 2013-10-29 | 2015-04-29 | 海尔集团公司 | Method for judging blockage of line chip filter of clothes drying machine and clothes drying machine |
| CN106382709A (en) * | 2016-08-26 | 2017-02-08 | 珠海格力电器股份有限公司 | Method and system for detecting filth blockage of filter screen of air conditioner and air conditioner |
-
2018
- 2018-08-27 CN CN201810983449.2A patent/CN109234971B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070083013A (en) * | 2006-02-20 | 2007-08-23 | 엘지전자 주식회사 | Drying machine and control method for the same |
| CN101139792A (en) * | 2006-09-06 | 2008-03-12 | Lg电子株式会社 | Clogging detecting system for dryer |
| CN101929060A (en) * | 2010-08-03 | 2010-12-29 | 海尔集团公司 | Method for intelligently prompting trash line clearup for clothes dryer and clothes dryer |
| CN103361950A (en) * | 2012-03-30 | 2013-10-23 | 三星电子株式会社 | Clothing dryer and blockage detection method thereof |
| CN104562606A (en) * | 2013-10-29 | 2015-04-29 | 海尔集团公司 | Method for judging blockage of line chip filter of clothes drying machine and clothes drying machine |
| CN106382709A (en) * | 2016-08-26 | 2017-02-08 | 珠海格力电器股份有限公司 | Method and system for detecting filth blockage of filter screen of air conditioner and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109234971A (en) | 2019-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2505565C (en) | Apparatus and method for controlling a clothes dryer | |
| US8528229B2 (en) | Laundry treating appliance with imaging control | |
| US20090126220A1 (en) | Method for detecting the standstill of a drum in a tumble dryer, and tumble dryer which is suitable for this purpose | |
| CN103835111A (en) | Washing and drying all-in-one machine and dry judging method thereof | |
| CN110093767A (en) | A kind of dirty stifled judgment method of heat pump clothes dryer, device and heat pump clothes dryer | |
| US20220034023A1 (en) | Clothes care apparatus and control method thereof | |
| US20230029780A1 (en) | Control method for clothes drying apparatus | |
| JP2023509894A (en) | How to control a clothes dryer | |
| CN108842402A (en) | A kind of washing machine drying air duct jam detection, Self-cleaning system and method | |
| KR100651864B1 (en) | Automatically dryer and method for controlling the same | |
| CN109234971B (en) | Method and system for detecting cleanliness of air duct of washing and drying machine and washing and drying machine | |
| CN101210379B (en) | Method for realizing clothes drying-stopping by employing temperature controller | |
| CN112306583B (en) | Method and device for detecting air duct filter screen of drying device | |
| CN208414916U (en) | A kind of washing machine drying air duct detection device | |
| CN107326612B (en) | Drying judgment method, device and the washing-drying integral machine of washing-drying integral machine | |
| US11519128B2 (en) | System and method for controlling static electricity within a dryer appliance | |
| CN107513852B (en) | A kind of drying control method and clothing drying device of clothing drying device | |
| CN109610143B (en) | Clothes dryness and wetness degree detection device and method based on temperature sensing | |
| EP2267214B1 (en) | A method for estimating the load of clothes in a household dryer and dryer using such method | |
| CN109023838A (en) | Control method, device and the washing-drying integral machine of washing-drying integral machine cleaning device | |
| CN114606709A (en) | Method and device for detecting filth blockage of filter screen of clothes dryer | |
| US20220349114A1 (en) | Laundry drying machine and control method thereof | |
| CN113445284B (en) | Clothes dryer filter screen blockage detection method and clothes dryer | |
| CN106436227B (en) | Clothes dryer and fault self-checking method thereof | |
| CN114763669B (en) | Batting cleaning reminding method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |