CN112342750A - Water level control method and washing equipment - Google Patents
Water level control method and washing equipment Download PDFInfo
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- CN112342750A CN112342750A CN201910662472.6A CN201910662472A CN112342750A CN 112342750 A CN112342750 A CN 112342750A CN 201910662472 A CN201910662472 A CN 201910662472A CN 112342750 A CN112342750 A CN 112342750A
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- water
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- water level
- control method
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 300
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005406 washing Methods 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 230000007257 malfunction Effects 0.000 claims 1
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011418 maintenance treatment Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/087—Water level measuring or regulating devices
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4244—Water-level measuring or regulating arrangements
-
- 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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
-
- 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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/088—Liquid supply arrangements
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The invention discloses a water level control method and washing equipment, belonging to the technical field of washing, wherein the water level control method comprises the following steps: when water inflow starts, water inflow time is accumulated, first water inflow time required for reaching a water inflow reference water level is determined according to the change of a detection value of the turbidity sensor, water inflow is continued for a second water inflow time to reach a set water level, and water inflow is stopped. The accurate control of the water level of the inlet water can be realized only by hardware configuration of the existing turbidity sensor and a time length algorithm, so that excessive or insufficient inlet water is avoided; the washing equipment is controlled by adopting the water level control method, so that the product cost and the failure rate are reduced, and the accuracy of water level detection is improved.
Description
Technical Field
The invention relates to the technical field of washing, in particular to a water level control method and washing equipment.
Background
In existing washing apparatuses, such as dishwashers or washing machines, it is necessary to control the water level in the sump. A water level detector, such as a float switch, a pressure switch or a pressure sensor, is generally provided for detecting the water level. In addition, a turbidity detector is generally provided to detect the turbidity of the water in the water tank. The provision of multiple detectors increases the cost of hardware and makes the circuit complex, thus increasing the failure rate and maintenance frequency.
Disclosure of Invention
The invention aims to provide a water level control method and washing equipment to solve the technical problems of hardware cost, complex circuit and high failure rate in the prior art.
As the conception, the technical scheme adopted by the invention is as follows:
a water level control method comprising: when water inflow starts, water inflow time is accumulated, first water inflow time required for reaching a water inflow reference water level is determined according to the change of a detection value of the turbidity sensor, water inflow is continued for a second water inflow time to reach a set water level, and water inflow is stopped.
The water inlet flow rate is determined according to the water inlet reference amount corresponding to the water inlet reference water level and the first water inlet time length, and the second water inlet time length is determined according to the total water inlet amount corresponding to the set water level and the water inlet flow rate.
When the water inlet starts, the detection value of the turbidity sensor is recorded and the water inlet time is accumulated, when the detection value of the turbidity sensor changes, the water level reaches the water inlet reference water level, and the accumulated water inlet time is recorded as a first water inlet duration.
And when water inflow is continued, accumulating the water inflow time again, and stopping water inflow until the accumulated water inflow time is the second water inflow time.
And after water inflow begins, if the accumulated water inflow time exceeds the set water inflow time upper limit, fault alarm is carried out.
And when the fault alarm is carried out, stopping water inflow and forcibly draining water for a third time.
After water inflow begins, if the accumulated water inflow time is lower than the set water inflow time lower limit, the detection value of the turbidity sensor changes, and then fault alarm is carried out.
And if the power of the motor exceeds a set value, the second water inlet time is shortened, and water inlet is stopped immediately.
When the drainage is started, the drainage time is accumulated, the first drainage time length required for reaching the drainage reference water level is determined according to the change of the detection value of the turbidity sensor, the second drainage time length is continuously drained, and the drainage is stopped.
A washing device is controlled by adopting the water level control method.
The invention has the beneficial effects that:
according to the water level control method provided by the invention, the water inlet time is accumulated while water is fed, the first water inlet time required for reaching the water inlet reference water level can be determined through the change of the detection value of the turbidity sensor, the time required for continuing water inlet can be further determined, the set water level can be reached after the second water inlet time for continuing water inlet, and water inlet is stopped. Therefore, the accurate control of the water level of the inlet water can be realized only by hardware configuration of the existing turbidity sensor and combining with a time length algorithm, and excessive or insufficient inlet water is avoided.
According to the washing equipment provided by the invention, the water level control method is adopted for control, so that the product cost and the failure rate are reduced, and the accuracy of water level detection is improved.
Drawings
FIG. 1 is a first flowchart of a water level control method according to a first embodiment of the present invention;
FIG. 2 is a flowchart illustrating a water level control method according to a first embodiment of the present invention;
FIG. 3 is a flow chart of a water level control method according to a second embodiment of the present invention;
fig. 4 is a flowchart of a water level control method according to a third embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Example one
Referring to fig. 1 and 2, an embodiment of the present invention provides a water level control method, which can precisely control the water level of water entering a water tank or other container. The embodiment of the invention also provides washing equipment which can be a washing machine or a dish washing machine and is controlled by adopting the water level control method.
When water inflow starts, water inflow time is accumulated, first water inflow time required for reaching a water inflow reference water level is determined according to the change of a detection value of the turbidity sensor, water inflow is continued for a second water inflow time to reach a set water level, and water inflow is stopped. The accurate water inlet can be realized only by hardware configuration of the existing turbidity sensor and combination of a time length algorithm; the product cost and the failure rate are reduced, and the accuracy of water level detection is improved.
In this embodiment, the turbidity sensor is set at a set height from the bottom of the water tank to determine that the water in the water tank is drained before water intake begins. Because the voltages reported by the turbidity sensor in the air and the water are different, namely the detected turbidity values are different, when the detection value of the turbidity sensor changes, the medium indicating the position of the turbidity sensor changes. The light guide turbidity sensor used in the present application changes the detection value of the turbidity sensor when the light guide medium suddenly changes (for example, air changes into water).
Before water enters, a turbidity sensor is placed in the air, and a first turbidity value is detected; when water enters, the detection value of the turbidity sensor is recorded and the water inlet time is accumulated, and along with the rise of the water level, when the water level is lower than the position of the turbidity sensor, the detection value of the turbidity sensor cannot change; when the turbidity sensor is immersed in water, the detection value of the turbidity sensor changes, a second turbidity value is detected, the second turbidity value is obviously changed relative to the first turbidity value, the water level is just higher than the height of the turbidity sensor, namely the water level reaches the water inlet reference water level, and the accumulated water inlet time at the moment is recorded as the first water inlet time length.
And when water inflow is continued, accumulating the water inflow time again, and stopping water inflow until the accumulated water inflow time is the second water inflow time. Of course, in this process, the values of the first water intake time and the second water intake time are recorded, and the total water intake time can be naturally obtained.
In the washing equipment adopting the water level control method, the structure of the water tank in each washing equipment is differentThe water inflow corresponding to different water levels is stored firstly, namely different water inflow is needed corresponding to several set water levels. When the water level reaches the water inlet reference level, acquiring a water inlet reference amount corresponding to the water inlet reference level according to the stored data in the database, and determining the water inlet flow rate according to the water inlet reference amount and the first water inlet duration; for example, the reference amount for water intake is V0The first water inlet time is t1If the water inflow velocity V is equal to V0/t1. Similarly, the total water inflow corresponding to the set water level is determined, and the second water inflow duration is determined according to the total water inflow and the inflow flow rate; for example, if the total water inflow is V, the second water inflow time period t2＝(V-V0) And/v. The algorithm can accurately obtain the water inlet flow speed and the water inlet time, so that the water level is accurately controlled, and the phenomenon of excessive or insufficient water inlet amount is avoided.
The total water inflow can be changed according to the difference of the preset water level in each washing device, and the total water inflow is specifically set and calculated according to the parameters of each washing device. The first water inlet time length is different according to the water inlet flow rate in each washing device, and even in the same washing device, the first water inlet time length is changed in each washing.
In order to prevent the turbidity sensor from generating faults to cause detection value changes to influence normal water inlet, the upper limit of the set water inlet time length and the lower limit of the set water inlet time length are determined according to the first water inlet time length and the second water inlet time length recorded during multiple times of normal water inlet or according to multiple tests. Setting the upper limit of the water inlet time length to be higher than the first water inlet time length recorded during normal water inlet and lower than the sum of the first water inlet time length and the second water inlet time length recorded during normal water inlet; and setting the lower limit of the water inlet time length to be lower than the first water inlet time length recorded during normal water inlet.
After water inflow begins, if the accumulated water inflow time exceeds the set water inflow time upper limit, the water inflow at the moment is represented to be enough to enable the turbidity sensor to be immersed in water, and if the detection value of the turbidity sensor is not changed in the process, fault alarm is carried out. Either a turbidity sensor failure or a drain assembly failure such that the incoming water is drained. In fact, in the water inlet process, if the detection value of the turbidity sensor normally changes, the accumulated water inlet time cannot reach the set water inlet time length upper limit, that is, if the accumulated water inlet time exceeds the set water inlet time length upper limit, a fault is inevitable, and the fault alarm is performed.
And when the fault alarm is carried out, stopping water inflow and forcibly draining water for a third time. If the turbidity sensor has a fault, draining water to prevent overlarge water pressure caused by excessive water inflow, and then performing subsequent fault maintenance treatment.
And after water inflow begins, if the accumulated water inflow time is lower than the set water inflow time lower limit, and the detection value of the turbidity sensor changes, performing fault alarm. It may be a turbidity sensor failure or the water in the tank may enter without being drained. And when the fault alarm is carried out, stopping water inflow and checking and processing.
Example two
Fig. 3 shows the second embodiment, and for the sake of simplicity, only the differences between the second embodiment and the first embodiment will be described. The difference is that the water is fed while the motor is controlled to rotate in the second water feeding time, and if the power of the motor exceeds a set value, the second water feeding time is shortened, and the water feeding is stopped immediately. In the first water intake period, the water pressure is low, and in the second water intake period, the water pressure increases faster. The control is to protect the washing equipment and prevent the overload or other faults caused by the large water pressure in the water inlet stage.
If the power of the motor exceeds the set value in the second water inlet time length, the second water inlet time length is shortened, and water inlet is stopped immediately. For example, when the water level reaches the water inlet reference level, the second water inlet time obtained according to the algorithm is 5 min; when the water is fed for 3min, the power of the motor exceeds a set value, the water feeding is stopped, and the second water feeding duration is forcibly shortened to 3 min.
And if the power of the motor does not exceed the set value in the second water inlet time, stopping water inlet when the water inlet time reaches the second water inlet time. For example, when the water level reaches the water inlet reference level, the second water inlet time obtained according to the algorithm is 5 min; and when the water is fed for 5min, stopping feeding water and performing subsequent washing steps if the power of the motor does not exceed a set value all the time.
EXAMPLE III
Fig. 4 shows a third embodiment, and for the sake of simplicity, only the points of difference between the third embodiment and the first embodiment will be described. The difference is that when the water drainage is started, the water drainage time is accumulated, the first water drainage time required for reaching the water drainage reference water level is determined through the change of the detection value of the turbidity sensor, the second water drainage time is continued, and the water drainage is stopped. Accurate drainage can be realized only by hardware configuration of the existing turbidity sensor and combination of a time length algorithm; the product cost and the failure rate are reduced, and the accuracy of water level detection is improved.
Before draining, the turbidity sensor is placed in water to detect a second turbidity value; when the drainage is started, the detection value of the turbidity sensor is recorded and the water inlet time is accumulated, and along with the reduction of the water level, when the water level is higher than the position of the turbidity sensor, the detection value of the turbidity sensor cannot be changed; when the turbidity sensor is exposed out of the water surface and placed in the air, the detection value of the turbidity sensor changes, the first turbidity value is detected, the first turbidity value is obviously changed relative to the second turbidity value, the water level is just lower than the height of the turbidity sensor, namely the water level reaches the drainage reference water level, and the first drainage duration is recorded.
In the washing apparatus adopting the above water level control method, the water inflow amounts corresponding to different water levels are stored in advance. When the water level reaches the drainage reference water level, obtaining a drainage reference quantity according to the total water inflow and the water inflow corresponding to the drainage reference water level, and determining the drainage flow rate according to the drainage reference quantity and the first drainage duration; similarly, the second drainage duration is determined according to the water inflow and the drainage flow rate corresponding to the drainage reference water level, and is not described herein again.
If the second time length is not reached and the power of the motor exceeds the set value in the second embodiment, the total water inflow is determined according to the water inflow reference quantity, the water inflow flow rate and the shortened second time length.
After the drainage is started, if the accumulated drainage time exceeds the set drainage time upper limit, the drainage quantity at the moment is represented to be enough to expose the turbidity sensor to the air, and if the detection value of the turbidity sensor is not changed in the process, a fault alarm is carried out. And stopping draining water when a fault alarm occurs.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A water level control method, comprising: when water inflow starts, water inflow time is accumulated, first water inflow time required for reaching a water inflow reference water level is determined according to the change of a detection value of the turbidity sensor, water inflow is continued for a second water inflow time to reach a set water level, and water inflow is stopped.
2. The method of claim 1, wherein the inflow rate is determined according to the inflow reference amount corresponding to the inflow reference water level and the first inflow duration, and the second inflow duration is determined according to the total inflow and the inflow rate corresponding to the set water level.
3. The water level control method according to claim 1, wherein the detection value of the turbidity sensor is recorded and the water intake time is accumulated at the beginning of water intake, and when the detection value of the turbidity sensor changes, the water level reaches the water intake reference level, and the accumulated water intake time is recorded as the first water intake time.
4. The water level control method as claimed in claim 3, wherein the water supply time is newly accumulated while the water supply is continued, and the water supply is stopped until the accumulated water supply time is the second water supply time.
5. The water level control method according to claim 1, wherein after the water inflow is started, if the accumulated water inflow time exceeds the set water inflow time upper limit, a fault alarm is performed.
6. The water level control method according to claim 5, wherein, at the time of the malfunction alarm, the water supply is stopped and the water is forcibly discharged for a third time period.
7. The water level control method according to claim 1, wherein after the water inflow is started, if the accumulated water inflow time is lower than the lower limit of the set water inflow time period and the detection value of the turbidity sensor is changed, a fault alarm is performed.
8. The water level control method according to any one of claims 1 to 7, wherein the motor is controlled to rotate while water is supplied for the second water supply period, and if the power of the motor exceeds a set value, the second water supply period is shortened to immediately stop the water supply.
9. The water level control method according to any one of claims 1 to 7, wherein at the start of draining, a draining time is accumulated, a first draining time period required to reach a draining reference water level is determined by a change in a detection value of the turbidity sensor, and draining is continued for a second draining time period, and draining is stopped.
10. A washing apparatus, characterized by being controlled by the water level control method according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910662472.6A CN112342750A (en) | 2019-07-22 | 2019-07-22 | Water level control method and washing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910662472.6A CN112342750A (en) | 2019-07-22 | 2019-07-22 | Water level control method and washing equipment |
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| CN112342750A true CN112342750A (en) | 2021-02-09 |
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| CN201910662472.6A Withdrawn CN112342750A (en) | 2019-07-22 | 2019-07-22 | Water level control method and washing equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114369924A (en) * | 2021-12-07 | 2022-04-19 | 珠海格力电器股份有限公司 | Washing machine water level detection method and washing machine |
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| CN102499613A (en) * | 2011-11-18 | 2012-06-20 | 海尔集团公司 | Water level detection and control method |
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| CN105671860A (en) * | 2016-03-16 | 2016-06-15 | 海信（山东）冰箱有限公司 | Washing machine control method, controller and washing machine |
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| CN108287007A (en) * | 2017-01-09 | 2018-07-17 | 山东省水利勘测设计院 | A kind of intelligent water-level instrumentation based on Data fusion technique |
| CN108755007A (en) * | 2018-06-01 | 2018-11-06 | 青岛海尔洗衣机有限公司 | A kind of washing machine weighing method and washing machine |
| CN110031058A (en) * | 2019-03-28 | 2019-07-19 | 佛山市百斯特电器科技有限公司 | A kind of method and dish-washing machine of fault detection |
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2019
- 2019-07-22 CN CN201910662472.6A patent/CN112342750A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102499613A (en) * | 2011-11-18 | 2012-06-20 | 海尔集团公司 | Water level detection and control method |
| CN104337406A (en) * | 2013-07-26 | 2015-02-11 | 美的集团股份有限公司 | Water volume control method for heater of water dispenser and water dispenser |
| CN105671860A (en) * | 2016-03-16 | 2016-06-15 | 海信（山东）冰箱有限公司 | Washing machine control method, controller and washing machine |
| CN106283498A (en) * | 2016-09-30 | 2017-01-04 | 无锡小天鹅股份有限公司 | Washing machine inflow fault based reminding method, device and washing machine |
| CN108287007A (en) * | 2017-01-09 | 2018-07-17 | 山东省水利勘测设计院 | A kind of intelligent water-level instrumentation based on Data fusion technique |
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| CN114369924A (en) * | 2021-12-07 | 2022-04-19 | 珠海格力电器股份有限公司 | Washing machine water level detection method and washing machine |
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