CN107653627B - Water quantity detection control method in washing machine and washing machine - Google Patents
Water quantity detection control method in washing machine and washing machine Download PDFInfo
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- CN107653627B CN107653627B CN201711001977.5A CN201711001977A CN107653627B CN 107653627 B CN107653627 B CN 107653627B CN 201711001977 A CN201711001977 A CN 201711001977A CN 107653627 B CN107653627 B CN 107653627B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
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Abstract
The invention belongs to the technical field of washing machines, and particularly relates to a water quantity detection control method in a washing machine and the washing machine. The invention aims to solve the problem that the existing washing machine can only detect the water quantity in the washing machine but cannot detect whether the water quantity is matched with the total quantity of clothes in a washing barrel. Therefore, the invention provides a water quantity detection control method in a washing machine, which comprises the following steps: intermittently rotating the impeller; when the impeller stops rotating suddenly, acquiring the contact state of the water containing barrel and the induction element; acquiring the eccentricity condition of the water containing barrel based on the contact state; selectively injecting water into the water tub according to the eccentricity; if the water tub is seriously eccentric, the water amount in the washing machine is not enough to completely soak the clothes in the water, and at the moment, water is filled into the water tub, so that the water amount in the water tub can be matched with the total amount of the clothes, the wear of the clothes is effectively reduced, and the clothes are better protected.
Description
Technical Field
The invention belongs to the technical field of washing machines, and particularly relates to a water quantity detection control method in a washing machine and the washing machine.
Background
With the continuous progress of science and technology, the hands of people are gradually liberated from heavy physical labor, and particularly, almost every household uses a washing machine to wash clothes to replace the traditional manual washing mode nowadays when the life pace is gradually accelerated. However, the conventional washing machines have many problems, for example, the conventional washing machines fill a predetermined amount of water into a tub (i.e., an outer tub) according to a general standard, but the predetermined amount of water may not be able to completely soak the laundry in the washing tub (i.e., an inner tub) due to factors such as the material and size of the laundry; meanwhile, when the washing water cannot completely soak the clothes, the clothes which are not soaked in the water easily rub against the inner wall of the washing tub, so that the clothes are seriously abraded, and the user experience is influenced.
In recent years, in order to effectively improve the overall performance of the washing machine, technicians detect the water amount in the washing machine by adding a capacity sensor to the washing machine, but the capacity sensors are easily influenced by factors such as the material and distribution of clothes, and the influence factors easily cause that the capacity sensors cannot accurately detect the water amount in the washing machine. Therefore, when the water in the washing machine cannot completely soak the clothes in the water; if the washing machine starts to operate, the clothes which are not soaked in the water can generate strong friction with the inner wall of the washing barrel, so that the clothes are abraded and even damaged, and the user experience is greatly influenced.
Accordingly, there is a need in the art for a new method of controlling water level detection in a washing machine to solve the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the existing washing machine can only detect the water amount in the washing machine but cannot detect whether the water amount is matched with the clothes in the washing tub, the present invention provides a water amount detection control method in a washing machine, wherein the washing machine comprises a water tub, a washing tub arranged in the water tub, and a sensing element arranged outside the water tub; the water quantity detection control method comprises the following steps: acquiring a contact state of the water containing barrel and the induction element; acquiring the eccentricity condition of the water barrel based on the contact state; and selectively injecting water into the tub according to the eccentricity.
In a preferred technical solution of the above method for detecting and controlling the amount of water in a washing machine, the washing machine further includes a pulsator disposed in the washing tub, and the method for detecting and controlling the amount of water further includes: the pulsator is intermittently rotated before or simultaneously with the step of acquiring the contact state of the tub with the induction element.
In the preferable technical scheme of the method for detecting and controlling the water amount in the washing machine, the step of enabling the impeller to rotate intermittently specifically comprises the following steps: rotating the pulsator; and when the rotating speed of the impeller reaches a preset rotating speed, stopping the impeller from rotating.
In a preferred embodiment of the method for detecting and controlling the amount of water in the washing machine, the method further includes: before the step of "rotating the pulsator", laundry is put into the washing tub.
In the above preferred technical solution of the method for detecting and controlling the amount of water in the washing machine, "acquiring the contact state of the washing tub and the sensing element" specifically includes: acquiring a value of a contact force between the tub and the induction element when the tub comes into contact with the induction element.
In a preferred embodiment of the above method for detecting and controlling the amount of water in the washing machine, the step of selectively filling water into the tub according to the eccentricity includes: comparing the value of the contact force to a threshold value; selectively filling water into the tub according to a comparison result of the value of the contact force with the threshold value.
In a preferred embodiment of the above method for detecting and controlling the amount of water in the washing machine, the step of selectively filling water into the tub according to the comparison result between the value of the contact force and the threshold value may include: if the contact force is less than or equal to the threshold value, the water is not filled into the tub.
In a preferred embodiment of the above method for detecting and controlling the amount of water in the washing machine, the step of selectively filling water into the tub according to the comparison result between the value of the contact force and the threshold value may include: and if the contact force is greater than the threshold value, filling water into the water barrel.
In a preferred embodiment of the method for detecting and controlling the amount of water in the washing machine, the step of filling water into the water tub includes: and injecting a corresponding amount of water into the water barrel according to the value of the contact force.
The invention also provides a washing machine, which comprises a control device, wherein the control device is used for executing the water quantity detection control method in the washing machine in any one of the preferable technical schemes.
As can be understood by those skilled in the art, in a preferred embodiment of the present invention, the washing machine includes a tub, a washing tub disposed in the tub, a pulsator disposed in the washing tub, and a sensing element disposed outside the tub, and the method of detecting and controlling the amount of water in the washing machine of the present invention includes: intermittently rotating the impeller; when the impeller stops rotating suddenly, acquiring the contact state of the water containing barrel and the induction element; acquiring the eccentricity condition of the water containing barrel based on the contact state; selectively injecting water into the water tub according to the eccentricity; if the water tub is seriously eccentric, the water amount in the washing machine is not enough to completely soak the clothes in the water, and at the moment, water is filled into the water tub, so that the water amount in the water tub can be matched with the total amount of the clothes, the wear of the clothes is effectively reduced, and the clothes are better protected.
Drawings
Fig. 1 is a flow chart showing the steps of the method for detecting and controlling the amount of water in a washing machine according to the present invention.
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 only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the steps of the method of the present invention are described herein in a particular order, these orders are not limiting, and one skilled in the art may perform the steps in a different order without departing from the underlying principles of the invention.
It should be noted that the washing machine in the preferred embodiment includes a tub and a washing tub disposed in the tub, and a pulsator is disposed in the washing tub. In addition, the present preferred embodiment is described with reference to a washing machine in which the tub is housed in the tub; specifically, the washing tub contains clothes, the water tub is sleeved outside the washing tub, so that the clothes in the washing tub can be soaked by the water in the water tub, and when the impeller of the washing machine starts to rotate, the clothes and the water in the washing tub also rotate along with the impeller; meanwhile, when the impeller suddenly stops in the rotation process, clothes and water in the washing tub suddenly lose the action of centripetal force to generate centrifugal motion, that is, the clothes and water in the washing tub tend to move continuously along the tangential direction of the washing tub. In short, when the pulsator in the washing tub suddenly stops or decelerates during rotation, water and laundry in the washing tub tend to move continuously in a tangential direction of the washing tub, thereby causing the water and laundry in the washing tub to collide against the wall of the washing tub.
Specifically, when the pulsator in the washing tub suddenly stops or slows down during rotation, the movement direction of water is immediately changed when the water hits the washing tub in a tangential direction due to the greater flexibility of the water; meanwhile, under the condition of sufficient water quantity, clothes in the water can also change along with the change of the movement direction of the water; however, in the case of insufficient water, since the clothes themselves have small flexibility and large overall weight, when the clothes not soaked in water collide with the washing tub in a tangential direction, the movement direction of the clothes is difficult to change, and even the clothes stick to the washing tub, so that the clothes strongly collide with the washing tub, and the washing tub generates eccentric movement, and accordingly, the water tub sleeved outside the washing tub also generates eccentric movement. In other words, when the pulsator in the washing tub suddenly stops or slows down during rotation, if the washing tub generates an eccentric motion, it means that the laundry in the washing tub is not completely soaked in water, i.e. the amount of water in the washing machine is insufficient; if the washing tub can continue to run smoothly, it indicates that the laundry in the washing tub is completely soaked in water, i.e., the amount of water in the washing machine is sufficient.
Based on the problem that the existing washing machine provided in the background technology can only detect the water quantity in the washing machine, but cannot detect whether the water quantity is matched with clothes in the washing barrel, the invention provides a water quantity detection control method in the washing machine by combining the principle; the water quantity detection control method can judge whether the water quantity in the washing machine is sufficient or not by acquiring the eccentric condition of the water containing barrel, and timely injects water into the water containing barrel under the condition that the water quantity in the water containing barrel is insufficient, so that the water quantity in the washing machine can be effectively matched with the total quantity of clothes, the abrasion of the clothes is effectively reduced, and the clothes are better protected.
Further, the laundry machine further includes an induction element provided outside the tub, the induction element being capable of inducing a contact state between itself and the tub, the laundry machine being capable of acquiring an eccentricity of the tub based on the contact state so as to selectively fill the water into the tub; preferably, the sensing element is capable of detecting a magnitude of a contact force when the sensing element generates the contact force with the tub, and further, the laundry machine is capable of acquiring an eccentricity of the tub by the magnitude of the contact force, thereby effectively judging whether the amount of water in the laundry machine is sufficient.
As can be appreciated by those skilled in the art, it is preferable that the sensing element is a lever of the washing machine, the lever being provided on a housing of the washing machine, the tub striking against the lever when the tub makes an excessively large eccentric motion, and at the same time, the lever being capable of acquiring a magnitude of a striking force between itself and the tub. It should be noted that the impact force described herein is one of the above contact forces, and it is apparent that the sensing element may be other instruments capable of measuring the contact force, such as a force sensor, etc., as long as the sensing element can accurately measure the impact force of the tub. At the same time, the invention does not impose any limitation on the type of inductive element, since such changes of the inductive element do not depart from the basic principle of the invention, and therefore fall within the protection scope of the invention.
The method of the present invention will be described in detail below by taking as an example a process in which the pulsator washing machine operates the water amount detection control method of the present invention. Specifically, the pulsator washing machine is provided with a control device for controlling a washing program of the pulsator washing machine, and the control device is further capable of receiving data of the contact force transmitted by the induction element, then performing corresponding processing on the data, and then selectively adding water into the water tub according to the processing result. It can be understood by those skilled in the art that the control device may be a control module of the pulsator washing machine itself, or may be other fixed or mobile control equipment disposed outside the pulsator washing machine.
Referring first to fig. 1, a flow chart of the water quantity detection control method in a washing machine according to the present invention is shown. As shown in fig. 1, the water amount detection control method specifically includes the following steps:
s101: putting the clothes into a washing barrel;
s102: starting a washing program of the washing machine to rotate the impeller;
s103: when the rotating speed of the impeller reaches a preset rotating speed, stopping the rotation of the impeller;
s104: when the water containing barrel is in contact with the induction element, acquiring the value of the contact force;
s105: judging whether the numerical value of the contact force is larger than a threshold value; if yes, go to step S107; if not, executing step S106;
s106: maintaining a washing program of the washing machine;
s107: determining an amount of water to be injected into the tub based on the magnitude of the contact force;
s108: injecting a determined amount of water into the water tub;
s109: the washing process of the washing machine is continued.
Further, since it is only necessary to determine whether the amount of water in the washing machine matches the total amount of the laundry when the laundry is placed in the washing tub of the pulsator washing machine; therefore, in step S101, laundry is first put into the washing tub.
Further, since the water amount detection control method of the present invention needs to provide initial rotation conditions for the water and the laundry in the washing tub, in step S102, a washing program of the washing machine is started according to a user' S requirement, a predetermined amount of water is filled into the water tub, and then the pulsator of the pulsator washing machine is rotated to drive the water and the laundry in the washing tub to rotate. It is understood that, although the washing course executed in the present preferred embodiment is the washing course selected according to the user's request, the washing course may obviously be a preset washing course before the washing course selected by the user is executed; meanwhile, the predetermined amount of water described in the preferred embodiment refers to an amount of water to be injected in a manner that the amount of water is calculated in the existing washing machine.
After the pulsator starts to rotate, step S103 is performed, in which the rotation speed of the pulsator is detected in real time, and when the rotation speed of the pulsator reaches a predetermined rotation speed, the pulsator is suddenly stopped from rotating. It can be understood that the larger the rotation speed of the pulsator, the larger the centripetal force required by the water and the laundry in the washing tub to maintain the rotation speed; meanwhile, when the pulsator suddenly stops rotating, the more violent the centrifugal motion of the water and the laundry in the washing tub is. Therefore, a technician may control the eccentricity of the tub by setting a predetermined rotation speed, so as to provide more reliable data for the detection method. In particular, when the laundry in the washing tub is not completely soaked in water, the greater the impact force applied to the washing tub by the laundry, the more severe the eccentric motion of the tub is.
As can be understood by those skilled in the art, a skilled person may detect the rotation speed of the pulsator in real time by installing a tachometer in the washing machine, and at the same time, the skilled person may obtain the rotation speed of the pulsator by obtaining the operation parameters of the motor of the washing machine through the control device. In other words, the present invention does not limit the manner of detecting the rotation speed of the pulsator, as long as the control device can acquire the rotation speed of the pulsator in real time through the manner. Meanwhile, the technician may set the predetermined rotation speed according to the user's demand and the detailed structure of the washing machine. In addition, although the present preferred embodiment generates the eccentric motion of the tub by stopping the pulsator from rotating suddenly, it is apparent to a skilled person that the eccentric motion of the tub may be generated by decelerating the pulsator suddenly.
Further, when the pulsator suddenly stops rotating, water and laundry in the washing tub inevitably collide against the wall of the washing tub to cause eccentric motion of the tub, and thus the tub comes into contact with the induction element. At this time, step S104 is performed, that is, when the tub comes into contact with the induction element, a value of the contact force is acquired; so as to obtain the eccentricity of the tub based on the value of the contact force and further judge whether the amount of water in the washing machine is sufficient.
After obtaining the value of the contact force, step S105 is executed to determine whether the value of the contact force is greater than a threshold value. It will be appreciated that each value of contact force corresponds to an eccentricity which reflects how well the amount of water in the washing machine matches the total amount of laundry. Specifically, the smaller the magnitude of the contact force, the smaller the magnitude of the eccentric motion generated by the tub, that is, the more the amount of water in the washing machine matches the total amount of laundry, that is, the more sufficient the amount of water in the washing machine; conversely, the larger the magnitude of the contact force, the larger the magnitude of the eccentric motion generated by the tub, i.e., the more mismatched the amount of water in the washing machine with the total amount of laundry, i.e., the less sufficient the amount of water in the washing machine. It should be noted that, the technician may set the threshold value by himself or herself according to various factors such as the specific situation of the washing machine, the user's demand, etc., so as to determine the minimum amount of water required by the washing machine.
Further, in step S105, if the value of the contact force is less than or equal to the threshold value, it indicates that the water amount in the washing machine is greater than or equal to the minimum water amount required by the washing machine; at this time, step S106 is executed, that is, the control device only needs to maintain the predetermined washing program of the washing machine to meet the washing requirement, and at the same time, the water in the water tub can be fully utilized, so that the water saving effect can be achieved on the basis of ensuring that the water amount required for washing is in the washing tub. The predetermined washing program is a washing program selected by a user.
Further, in step S105, if the value of the contact force is greater than the threshold value, it indicates that the water amount in the washing machine is less than the minimum water amount required by the washing machine; at this time, step S107 of determining the amount of water to be injected into the tub based on the magnitude of the contact force is performed. It is understood that a larger value of the contact force indicates a larger magnitude of the eccentric motion generated by the tub, i.e., a smaller mismatch between the amount of water in the washing machine and the total amount of laundry, i.e., a smaller shortage of water in the washing machine. Therefore, the control means may determine a specific value of the amount of water to be filled into the tub based on the value of the contact force, and specifically, the larger the value of the contact force, the larger the amount of water to be filled into the tub, i.e., the value of the contact force is in a direct proportional relationship with the amount of water to be filled. As will be understood by those skilled in the art, since the numerical correspondence is different according to the specific size and structure of the washing machine, the technicians can set the numerical correspondence according to the actual test conditions.
The water quantity detection control method of the invention can determine the water quantity to be injected into the water drum according to the value of the contact force, in other words, the water quantity detection control method can determine the specific water injection quantity according to the matching degree of the water quantity in the washing machine and the total quantity of the clothes, so that the water consumption is saved to the maximum extent on the basis of effectively ensuring that the water quantity in the washing machine is matched with the total quantity of the clothes. The water quantity detection control method not only can accurately detect whether the water quantity in the washing machine is matched with the total quantity of clothes, but also can inject the most matched water quantity into the water bucket according to the difference of the total quantity of the clothes in the washing bucket, so as to effectively ensure that the water quantity in the washing machine is matched with the total quantity of the clothes.
After the amount of water to be injected into the water tub is determined, step S108 is performed, that is, the amount of water is injected into the water tub, so as to effectively ensure that sufficient washing water is contained in the washing tub, thereby effectively reducing the wear of the laundry, and further achieving a better protection effect on the laundry in the washing tub. Finally, step S109 is executed, i.e. the washing machine is controlled to continue to execute the washing program set by the user. It is understood that step S108 and step S109 may be performed simultaneously, that is, water is filled into the tub while the washing machine operates the set washing course, so as to effectively shorten the washing time and improve the washing efficiency.
Finally, it should be noted that the above examples are all preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. When the present invention is actually used, a part of the steps may be added or deleted as needed or the order between the different steps may be changed by those skilled in the art. Such variations are not to be regarded as a departure from the spirit and scope of the invention.
So far, the preferred embodiments of the present invention have been described in conjunction with the accompanying drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (8)
1. A water quantity detection control method in a washing machine is characterized in that the washing machine comprises a water bucket, a washing bucket arranged in the water bucket and a sensing element arranged outside the water bucket; the water quantity detection control method comprises the following steps:
acquiring a contact state of the water containing barrel and the induction element;
acquiring the eccentricity condition of the water barrel based on the contact state;
selectively filling water into the tub according to the eccentricity;
the washing machine further comprises a wave wheel arranged in the washing barrel, and the water quantity detection control method further comprises the following steps:
intermittently rotating the pulsator before or simultaneously with the step of 'acquiring a contact state of the tub with the sensing element';
the step of "intermittently rotating the pulsator" specifically includes:
rotating the pulsator;
and when the rotating speed of the impeller reaches a preset rotating speed, stopping the impeller from rotating.
2. The method of claim 1, further comprising:
before the step of "rotating the pulsator", laundry is put into the washing tub.
3. The method of claim 1 or 2, wherein the step of obtaining the contact state of the tub with the sensor comprises:
acquiring a value of a contact force between the tub and the induction element when the tub comes into contact with the induction element.
4. The method of claim 3, wherein the step of selectively filling water into the tub according to the eccentricity comprises:
comparing the value of the contact force to a threshold value;
selectively filling water into the tub according to a comparison result of the value of the contact force with the threshold value.
5. The method of claim 4, wherein the step of selectively filling water into the tub according to the comparison result between the value of the contact force and the threshold value comprises:
if the contact force is less than or equal to the threshold value, the water is not filled into the tub.
6. The method of claim 4, wherein the step of selectively filling water into the tub according to the comparison result between the value of the contact force and the threshold value comprises:
and if the contact force is greater than the threshold value, filling water into the water barrel.
7. The method as claimed in claim 6, wherein the step of filling water into the water tub comprises:
and injecting a corresponding amount of water into the water barrel according to the value of the contact force.
8. A washing machine characterized by comprising a control device for performing the water amount detection control method of any one of claims 1 to 7.
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| CN110965281A (en) * | 2018-09-30 | 2020-04-07 | 青岛海尔洗衣机有限公司 | Water level detection control method for clothes washing equipment and clothes washing equipment |
| CN112095294A (en) * | 2019-05-28 | 2020-12-18 | 青岛海尔洗衣机有限公司 | Control method for pulsator washing machine |
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| JPH05161777A (en) * | 1991-12-17 | 1993-06-29 | Matsushita Electric Ind Co Ltd | Drum type washing machine |
| CN1696381A (en) * | 2004-05-10 | 2005-11-16 | 松下电器产业株式会社 | Washing machine |
| JP2013172805A (en) * | 2012-02-24 | 2013-09-05 | Panasonic Corp | Washing machine |
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Effective date of registration: 20220701 Address after: 300356 No.6, Keda 4th Road, Balitai Town, Jinnan District, Tianjin Applicant after: Tianjin Haier washing appliance Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER WASHING MACHINE Co.,Ltd. |
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