Disclosure of Invention
In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem that the drainage control method of the existing clothes dryer easily causes overflow of condensed water or frequent start and stop of the drainage pump, a first aspect of the present invention provides a drainage control method of a clothes treatment apparatus, the clothes treatment apparatus including a drying passage and a condensed water passage, the drying passage being communicated with the condensed water passage, a fan being provided in the drying passage, the drainage control method including:
s1, controlling the fan to rotate forward and run for a first set time period;
s2, controlling the fan to reversely rotate and run for a second set time period;
s3, acquiring a detection water level value of the condensed water;
s4, comparing the detected water level value with a first preset threshold value;
and S5, selectively controlling the actions of the fan and the drainage pump according to the comparison result.
In a preferred technical solution of the above drain control method, the step of selectively controlling the actions of the fan and the drain pump according to the comparison result specifically includes:
and if the detected water level value is greater than or equal to the first preset threshold value, controlling the fan to reversely rotate and run for a third set period of time, and simultaneously starting the drainage pump and continuously draining for the third set period of time.
In a preferred technical solution of the above drainage control method, the drainage control method further includes:
and after the drainage pump is started and continuously drains for a third set time period, closing the drainage pump, controlling the fan to rotate forward and operate for the first set time period, and then controlling the fan to rotate reversely and operate for the third set time period.
In a preferred technical solution of the above drainage control method, the drainage control method further includes:
and re-executing the steps S3 to S5 while controlling the fan to rotate reversely and operating the third set time period.
In the preferable technical scheme of the drainage control method, the third set time length is greater than or equal to the second set time length.
In a preferred technical solution of the above drain control method, the step of selectively controlling the actions of the fan and the drain pump according to the comparison result specifically further includes:
and if the detected water level value is smaller than the first preset threshold value, re-executing the steps S1 to S5.
In a preferred embodiment of the above drain control method, the first set time period is 10 minutes or longer.
In a preferred technical solution of the above drainage control method, the drainage control method further includes:
before executing the step S1, obtaining an initial water level value of condensed water;
comparing the initial water level value with a second preset threshold value;
and selectively executing the step S1 or controlling the action of the draining pump according to the comparison result.
In a preferred embodiment of the above drain control method, the step of selectively executing the step S1 or controlling the operation of the drain pump according to the comparison result specifically includes:
if the initial water level value is larger than or equal to the second preset threshold value, controlling the drainage pump to continuously drain water for a fourth set period of time, and then closing; and/or
And if the initial water level value is smaller than the second preset threshold value, keeping the drainage pump closed and executing the step S1.
According to the drainage control method of the clothes treatment equipment, the condensed water level is detected during the period of stopping the fan, and then the action of the drainage pump and the fan is controlled according to the comparison result of the obtained detected water level value and the first preset threshold value, so that the influence of air flow on the condensed water level height can be effectively avoided, the accurate water level value can be obtained, the action of the drainage pump and the fan can be further controlled based on the accurate water level value, the phenomenon that condensed water overflows or the drainage pump is frequently started and stopped is avoided, the service life of the drainage pump can be prolonged, water stains cannot be remained indoors, and user experience is effectively improved.
Further, if the detected water level value is greater than or equal to the first preset threshold value, the fan is controlled to reversely rotate and operate for a third set duration, meanwhile, the drainage pump is started and continuously drains for the third set duration, the third set duration is related to the water quantity, thorough drainage can be achieved through experimental determination, in the drainage process, the fan reversely rotates, namely the inner barrel reversely rotates, loose clothes can be prevented from being wound, water flow movement can be prevented from being blocked due to the existence of air flow, and accordingly thorough drainage is guaranteed.
Further, after the drain pump is started and continuously drains for a third set period of time, the drain pump is closed, the fan is controlled to rotate forward and run for the first set period of time, and then the fan is controlled to rotate reversely and run for the third set period of time, so that further drying of clothes can be achieved, and the clothes can be thoroughly dried when the weight of the clothes is large. Further, the steps S3 to S5 are re-executed while the fan is reversed and operated for a third set period of time, so that condensed water generated in the second round of clothes drying process can be discharged, and the clothes dryer is ensured not to leave excessive condensed water.
Further, before the drying program is formally started, the initial water level value of the residual condensed water in the previous drying process is detected and compared with a second preset threshold value, and whether the water draining action is needed to be performed first is judged according to the comparison result, so that the influence of the residual condensed water in the previous drying process on the current drying process can be avoided, and the overflow of the condensed water can be avoided.
The second aspect of the present invention also provides a laundry treatment apparatus, which may be a clothes dryer, may be a washing and drying integrated machine, comprising a controller configured to be able to perform the drain control method of any one of the above-described aspects.
As can be appreciated by those skilled in the art, since the laundry treatment apparatus of the present invention is configured with the controller capable of executing the foregoing drainage control method, the laundry treatment apparatus has all technical effects brought by the drainage control method, such as avoiding overflow of condensed water, avoiding frequent start and stop of the drainage pump, and the like, which are not described herein.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. For example, although the following embodiments are explained in connection with a tumble dryer, this is not limitative, and the technical solution of the present invention is equally applicable to other types of laundry treatment apparatuses, such as a tumble washer-dryer, a pulsator washer-dryer, etc., without departing from the principle and scope of the present invention. Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better illustration of the invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details.
It should be noted that, in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
The invention provides a clothes treatment device and a drainage control method thereof, aiming at avoiding the influence of air flow in a drying channel on the liquid level by changing a water level detection time sequence, further ensuring the accuracy of a water level detection result and controlling the actions of other devices based on the accurate detection result.
The embodiment of the invention firstly provides a clothes treatment device, taking a clothes dryer as an example, wherein the clothes dryer is provided with a box body, an outer barrel, an inner barrel, a driving motor, a drying channel, a condensed water channel and the like. The inner cylinder is rotatably disposed within the outer cylinder. The drying channel is internally provided with a heating device and a fan, and the fan and the inner cylinder are synchronously driven by a driving motor, so that the fan rotates positively when the inner cylinder rotates positively, and the fan rotates reversely when the inner cylinder rotates reversely. When the fan rotates positively, air flow is generated in the drying channel, when the fan rotates reversely, air flow is not generated in the drying channel, and the inner cylinder rotates reversely only to loosen clothes, so that the clothes are prevented from being entangled. The drying channel is communicated with the condensed water channel, a drainage pump and a water level detection device are arranged in the condensed water channel, the water level detection device is used for detecting the condensed water level in the condensed water channel, a reference is provided for the action of the drainage pump, and the drainage pump is used for discharging condensed water. The specific drainage control method requires a controller for control, and the controller configured in the present invention can execute the drainage control method in each of the following embodiments.
The drain control method provided by the embodiment of the present invention is described below based on the above-described dryer configuration.
Example 1
Referring to fig. 1, the drainage control method in the present embodiment includes the steps of:
s1, controlling the fan to rotate forward and run for a first set time period.
Specifically, after a drying program is started, the drying program is directly started, the fan and the inner cylinder are controlled to rotate positively, so that air flow is formed in the drying channel, normal-temperature air flow is firstly heated by the heating device and then is changed into hot air flow and enters the inner cylinder, wet clothes in the inner cylinder are heated and then are changed into wet hot air flow, the wet hot air flow is changed into normal-temperature air flow or dry cold air flow after passing through the condensing device, the normal-temperature air flow or the dry cold air flow enters the next round of drying circulation, moisture in the air flow is changed into condensed water and enters the condensing pipeline, and the air flow circulation process lasts for a first set duration. The value of the first set duration may be related to the weight, material, water content, etc. of the wet laundry, and determined in the product test stage, and may be selected in the use stage of the user, for example, when the weight of the wet laundry is 2-3kg, the corresponding first set duration may be 15 minutes; when the wet laundry weight is less than 2kg, the first set period of time may be 10 minutes or the like accordingly. It is to be understood that the foregoing is merely illustrative and is not to be construed as limiting the scope of the invention. The first set period of time is generally set to 10 minutes or longer, and the period of time can ensure the clothes drying requirement in the general case.
S2, controlling the fan to rotate reversely and operate for a second set time period.
Specifically, after the fan operates for a first set period of time, the clothes in the inner cylinder are basically dried, and at the moment, the fan and the inner cylinder are controlled to start to reversely operate. In the inner cylinder reversing operation stage, no air flow is formed in the drying channel, and the inner cylinder reversing operation is only used for loosening clothes, so that the clothes are prevented from being entangled. The time lasts for a second set period of time, which may be determined during the product testing phase, and may be, for example, 1 minute, or 2 minutes, or other time period.
S3, obtaining a detection water level value of the condensed water while carrying out the step S2.
Specifically, in controlling the reverse rotation of the blower, the water level of the condensed water is detected by a water level detecting device such as various types of liquid level sensors, and a detected water level value is obtained. The water level detection process is performed in the fan reversing stage, because air flow cannot be formed in the drying channel when the fan is reversed, the liquid level cannot be shifted due to air flow blowing, the water level detection result cannot be affected by the air flow, an accurate liquid level value can be obtained, and the judgment of the next action is facilitated.
S4, comparing the detected water level value with a first preset threshold value.
Specifically, after the detection means has obtained the detected water level value, it is necessary to compare with a first preset threshold value. The first preset threshold is determined during the product testing phase and when the fluid level reaches the first preset threshold, the water drainage needs to be started.
And S5, selectively controlling the actions of the fan and the drainage pump according to the comparison result.
Specifically, the comparison results include the following two types, and different comparison results include different subsequent operations:
if the detected water level value is greater than or equal to a first preset threshold value, controlling the fan to reversely rotate and run for a third set duration, and simultaneously starting the drainage pump and continuously draining for the third set duration. When the detected water level value is greater than or equal to a first preset threshold value, the water draining operation is indicated to be needed, at the moment, the fan is controlled to reversely run and continuously run for a third set duration, and meanwhile, the drainage pump is started to drain water, and the water draining operation continuously runs for the third set duration. In this step, the fan is controlled to reverse while draining water, also to avoid being affected by the air flow, and to loosen the laundry.
If the detected water level value is smaller than the first preset threshold value, the steps S1 to S5 are re-executed.
Specifically, when the detected water level value is smaller than the first preset threshold value, the fact that the existing condensate water quantity does not reach the drainage standard is indicated, and drainage operation is not needed, so that unnecessary start-stop actions of the drainage pump can be reduced, and the service life of the drainage pump is prolonged. At this time, the drying process may be ended, or the drying operation may be continued, the laundry may be further dried, and steps S1 to S5 may be re-performed. When the total drying time reaches the set drying time, the clothes dryer is controlled to stop drying operation, the clothes dryer enters a dormant state, and an alarm can be sent to remind a user of finishing drying clothes.
Preferably, the third set time period is longer than or equal to the second set time period in order to ensure thorough draining, and the time required is relatively short since the main purpose of the second set time period is to loosen clothes and detect the water level.
Example 2
In some cases, a user may throw a large amount of wet laundry to dry, and as in the case of performing the drying drain operation only once according to embodiment 1, the drying may not be thorough, so the present embodiment provides a case that can be suitable for drying a large amount of wet laundry. Referring to fig. 2, the drainage control method provided in this embodiment includes:
s1, controlling the fan to rotate forward and run for a first set time period.
S2, controlling the fan to rotate reversely and operate for a second set time period.
S3, obtaining a detection water level value of the condensed water while carrying out the step S2.
S4, comparing the detected water level value with a first preset threshold value.
Specifically, steps S1-S4 are identical to those of example 1, and reference is made to example 1, and will not be described in detail herein.
And S5, selectively controlling the actions of the fan and the drainage pump according to the comparison result.
Specifically, the comparison results are of the following two types:
if the detected water level value is smaller than the first preset threshold value, the steps S1 to S5 are re-executed. This step is the same as in example 1.
If the detected water level value is greater than or equal to a first preset threshold value, controlling the fan to reversely rotate and run for a third set duration, and simultaneously starting the drainage pump and continuously draining for the third set duration. Further, the present embodiment is different from embodiment 1 in that:
in the process of executing step S5, if the detected water level value is greater than or equal to the first preset threshold value, the fan is controlled to rotate reversely and operate for a third set period of time, and after the drain pump is started and continuously drains for the third set period of time, the following steps are further needed:
s6, closing the drainage pump, controlling the fan to rotate forwards and run for a first set time period, and controlling the fan to rotate reversely and run for a third set time period. Further, steps S3 to S5 may be re-performed while controlling the fan to reverse and run for a third set period of time.
Specifically, the two-fan forward process may be defined as a drying early stage and a drying late stage. In the early drying period, namely in the period that the fan rotates forward for the first time and runs for a first set period of time, partial moisture on wet clothes can be separated, the clothes are not thoroughly dried at the moment, after one-time water drainage is completed, the drainage pump is firstly closed, and a second wheel of drying operation is carried out, so that the fan rotates forward for the second time and continues for the first set period of time, and the clothes are further dried. And then controlling the fan to rotate reversely for a third set period of time to loosen clothes, and re-executing the steps S3-S5 during the period of time to discharge condensed water in the second round of drying process. After the second round of drying operation is executed, if the set total time of the clothes dryer is reached, the drying operation is ended, and the clothes dryer enters a dormant state and gives an alarm.
Example 3
In some cases, a certain amount of condensed water may remain in the clothes dryer before use, if the water level does not reach the drain water level in the last stage of drying the clothes, the drain pump is not controlled to be started, the condensed water will remain in the condensed water channel, and when the drying program is started, excessive condensed water may cause overflow of the condensed water, so as to solve the problem, the embodiment provides a drain control method, and referring to fig. 3, the drain control method in the embodiment includes:
s01, acquiring an initial water level value of the condensed water. Specifically, before the fan is controlled to start, the water level of residual condensed water is detected, and an initial water level value is obtained.
S02, comparing the initial water level value with a second preset threshold value. The reason for this consideration is that if the residual condensed water is already close to but has not reached the first preset threshold value, the water level may reach the first preset threshold value before the fan forward rotation has not ended in the current drying process, so that excessive overflow of condensed water may occur if the drying is continued, and thus, the second preset threshold value is less than the first preset threshold value, as determined by experiments.
S03, selectively executing the step S1 or controlling the action of the draining pump according to the comparison result. Specifically, if the initial water level value is greater than or equal to a second preset threshold value, the drain pump is controlled to be continuously drained for a fourth set period of time, and then the drain pump is closed. This process completes the drainage of the residual condensed water. The fourth set duration is less than the third set duration.
If the initial water level value is smaller than the preset threshold value, the drainage pump is kept to be closed, and step S1 is executed. At this time, it is indicated that the excessive overflow of condensed water does not occur even if the drying is continued for the first set period of time, and the subsequent steps can be continued.
S1, controlling the fan to rotate forward and run for a first set time period.
S2, controlling the fan to rotate reversely and operate for a second set time period.
S3, obtaining a detection water level value of the condensed water while carrying out the step S2.
S4, comparing the detected water level value with a preset threshold value.
And S5, selectively controlling the actions of the fan and the drainage pump according to the comparison result.
With respect to steps S1-S5, reference is made specifically to examples 1 and 2 and will not be described in detail here.
Example 4
This embodiment is a combination of embodiment 3 and embodiment 2, and is applicable to a case where there is a condensate residue and a lot of wet laundry tape is dried. Referring to fig. 4, the drainage control method provided in this embodiment includes:
s01, acquiring an initial water level value of the condensed water. Specifically, before the fan is controlled to start, the water level of residual condensed water is detected, and an initial water level value is obtained.
S02, comparing the initial water level value with a second preset threshold value.
S03, selectively executing the step S1 or controlling the action of the draining pump according to the comparison result. Specifically, if the initial water level value is greater than or equal to a second preset threshold value, the drain pump is controlled to be continuously drained for a fourth set period of time, and then the drain pump is closed. If the initial water level value is smaller than the preset threshold value, the drainage pump is kept to be closed, and step S1 is executed.
S1, controlling the fan to rotate forward and run for a first set time period.
S2, controlling the fan to rotate reversely and operate for a second set time period.
S3, obtaining a detection water level value of the condensed water while carrying out the step S2.
S4, comparing the detected water level value with a preset threshold value.
And S5, selectively controlling the actions of the fan and the drainage pump according to the comparison result.
For the specific operation of steps S01 to S5, reference is made to examples 1 to 3, which will not be described in detail here.
According to the drainage control method of the clothes treatment equipment, the condensed water level is detected during the period of stopping the fan, and then the action of the drainage pump and the fan is controlled according to the comparison result of the obtained detected water level value and the first preset threshold value, so that the influence of air flow on the condensed water level height can be effectively avoided, the accurate water level value can be obtained, the action of the drainage pump and the fan can be further controlled based on the accurate water level value, the phenomenon that condensed water overflows or the drainage pump is frequently started and stopped is avoided, the service life of the drainage pump can be prolonged, water stains cannot be remained indoors, and user experience is effectively improved.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.