CN106436148B - Washing machine water level correction control method and washing machine - Google Patents

Washing machine water level correction control method and washing machine Download PDF

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CN106436148B
CN106436148B CN201510489661.XA CN201510489661A CN106436148B CN 106436148 B CN106436148 B CN 106436148B CN 201510489661 A CN201510489661 A CN 201510489661A CN 106436148 B CN106436148 B CN 106436148B
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water
value
water inlet
washing machine
heating
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CN106436148A (en
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吕艳芬
许升
邓金柱
彭秀文
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Qingdao Haier Drum Washing Machine Co Ltd
Haier Smart Home Co Ltd
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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 discloses a washing machine water level correction control method and a washing machine, belongs to the field of washing device control methods and washing devices, and is designed for solving the problems that the existing washing machine lacks an accurate water level correction control method and the like. The invention provides a water level correction control method for a washing machine, which comprises the following steps: and obtaining a third value through any two values of the heating time of the washing machine, the water temperature difference value before and after heating and the water inlet value, and judging whether water is required to be supplemented according to a comparison result of the third value and the target value. The washing machine provided by the invention adopts the water level correction control method. The water level correction control method of the washing machine enables the water level correction accuracy to be higher. The washing machine is more convenient to use and can clean clothes more cleanly.

Description

Washing machine water level correction control method and washing machine
Technical Field
The invention relates to a water level correction control method of a washing machine and the washing machine adopting the method.
Background
A washing machine is one of the commonly used home appliances. Generally, in the washing process, clothes are placed firstly, then water level value is calculated according to the water level value set by a user or an intelligent program to enter water, however, due to the fact that the clothes are immersed in water and occupy the volume of partial water, the liquid level of the clothes can be raised, the water absorption amount of different clothes is different, and the like, certain errors exist in the water inflow amount.
The existing water level correction control method of the washing machine comprises the following steps: after the clothes to be cleaned are put into the washing machine, manually selecting a target water level; automatically sensing the weight and judging the actual water level; setting a safe range of a target water level and an actual water level; calculating an error value of the target water level and the actual water level; and judging whether the error value is larger than or equal to the safety range, if so, setting the actual water level as the target water level, and if not, keeping the target water level unchanged. The water level correction control method mainly has two defects: the accuracy of water level correction by adopting the method is low, and no specific accurate correction calculation method exists; secondly, especially for some pulsator washing machines or drum washing machines with heating function, not only the accuracy of water level correction is low, but also the waste of energy is caused by much heated water.
Disclosure of Invention
An object of the present invention is to provide a water level correction control method of a washing machine with higher accuracy of water level correction.
Another object of the present invention is to provide a washing machine which is more convenient to use.
To achieve the purpose, on one hand, the invention adopts the following technical scheme:
a third value is obtained through any two values of the heating time of the washing machine, the water temperature difference value before and after heating and the water inlet quantity value, and whether water is required to be supplemented or not is judged according to the comparison result of the third value and a target value.
Further, when the third value is an actual water inlet value calculated according to the heating time of the washing machine and the difference value of the water temperatures before and after heating, the target value is a preset water inlet value; or
When the third value is the actual heating time of the washing machine calculated according to the actual water inflow value and the water temperature difference value before and after heating, the target value is the theoretical heating time of the washing machine calculated according to the preset water inflow value and the water temperature difference value before and after heating; or
When the third value is a theoretical water temperature difference value before and after heating calculated according to the preset water inlet value and the actual heating time of the washing machine, the target value is an actual water temperature difference value before and after heating obtained through detection; or
And when the third value is a theoretical water temperature value after heating calculated according to the preset water inlet value and the actual heating time of the washing machine, the target value is an actual water temperature value after heating obtained through detection.
Further, the water inlet quantity value V and the initial water temperature value TFirst stageHeating time T and heated water temperature value TPowderThe relationship between them is: v1000 × P × T/[ C × ρ (T)Powder-TFirst stage)]Wherein, P is the electric power of the heating pipe; c is the specific heat capacity of water; ρ is the density of water.
Further, after water is fed into the washing machine, an actual water inlet quantity value is obtained through calculation according to a formula, and if the actual water inlet quantity value is smaller than a preset water inlet quantity value, water supplementing working time of the water inlet valve is obtained through calculation according to a relational expression between water supplementing quantity and water inlet speed so as to supplement water; and if the actual water inflow value is larger than the preset water inflow value, ending water inflow.
Further, the control method specifically includes the following steps:
step 1, determining a preset water inlet value V according to clothes to be cleanedPreparation of；
Step 2, water inflow is started after the water inflow valve acts, the temperature sensor detects an initial water temperature value T (n +1) when water inflow is carried out at this time, wherein n is the judged times of the current accumulated actual water inflow value and the preset water inflow value;
step 3, judging whether water inflow is finished, if so, turning to step 4, and if not, turning to step 2 to continue water inflow;
step 4, recording the water inlet time t1n, heating time t2n, and a heated water temperature value T (n +2), and calculating a temperature difference △ T ═ T (n +2) -T (n + 1);
step 5, calculating the current accumulated actual water inlet value
Figure BDA0000778965660000031
Wherein, V0＝0；
Step 6, judging VFruit of Chinese wolfberryWhether or not it is less than or equal to N VPreparation ofIf yes, turning to the step 7, otherwise, turning to the step 8, wherein N is a correction coefficient, and the value range of N is [0.85, 1.15 ]]；
Step 7, calculating the working time of the water inlet valve during water replenishing and then turning to the step 2;
and 8, finishing water inflow.
Further, the actual water inflow value after any water inflow in the step 5 is as follows:
Vn+1＝1000*P*t2n/(C ρ Δ T), wherein △ T ═ T (n +2) -T (n +1),
c is the specific heat capacity of water, and the unit is Joule/kilogram-degree centigrade;
rho is the density of water in kilograms per cubic meter;
Vn+1the actual water inlet volume of any time after water inlet is carried out, and the unit is liter;
△ T is the temperature change in degrees Celsius;
p is the electric power of the heating pipe, and the unit is tile;
t2n is the heating time in seconds.
Further, the working time of the water inlet valve during water replenishing in the step 7 is as follows: t is t3n＝K*(VPreparation of-VFruit of Chinese wolfberry) A, wherein a ═ V1/t10；
K is a compensation coefficient;
a is water inlet speed, and the unit is liter/second;
t10 is the water inlet time of the first water inlet, and the unit is second;
V1the actual intake volume after the first intake is in liters.
Further, when n is>When the water inlet valve is at 0, namely when the judged times of the accumulated actual water inlet quantity value and the preset water inlet quantity value are at least one time, the action time of the water inlet valve in the step 2 is t3n, water inlet time t in step 41n＝t3n。
On the other hand, the invention adopts the following technical scheme:
a washing machine adopts the water level correction control method.
The water level correction control method of the washing machine can obtain the accumulated actual water inlet value by acquiring the initial water temperature value, the heating time and the heated water temperature value, and the accumulated actual water inlet value is compared with the preset water inlet value of the washing machine to judge whether water needs to be supplemented in the washing machine.
The washing machine adopting the water level correction control method is more convenient to use and can clean clothes more cleanly.
Drawings
Fig. 1 is a flowchart of a water level correction control method of a washing machine according to a preferred embodiment of the present invention;
FIG. 2 is a second flowchart of a water level calibration control method for a washing machine according to a first preferred embodiment of the present invention;
fig. 3 is a third flowchart of a water level calibration control method for a washing machine according to a first preferred embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
A third value is obtained through any two values of the heating time of the washing machine, the water temperature difference value before and after heating and the water inlet quantity value, and whether water is required to be supplemented or not is judged according to the comparison result of the third value and a target value.
The first preferred embodiment:
the preferred embodiment provides a water level correction control method for a washing machine. As shown in fig. 1, the control method includes the steps of:
step 1, after water is fed into the washing machine, calculating according to a formula to obtain an actual water inlet value;
step 2, judging the actual water inlet value VFruit of Chinese wolfberryWhether the water inlet quantity is less than the preset water inlet quantity value VPreparation ofPreferably, the actual intake water amount value V is judgedFruit of Chinese wolfberryWhether the water inlet quantity is less than the preset water inlet quantity value N VPreparation ofIf N is a correction coefficient, turning to the step 3 if N is a correction coefficient, otherwise, turning to the step 4;
step 3, calculating the water replenishing working time of the water inlet valve to replenish water;
and 4, finishing water inflow.
The second preferred embodiment:
the preferred embodiment provides a water level correction control method for a washing machine. As shown in fig. 2, the control method includes the steps of:
step 1, water is fed by the action of a water inlet valve, and a temperature sensor detects an initial water temperature value TFirst stage；
Step 2, recording water inlet time T, heating time tn and heated water temperature value TPowder；
And 3, according to the formula V, 1000P T/[ C ρ (T)Powder-TFirst stage)]Calculating to obtain the actual inflow value VFruit of Chinese wolfberry；
Step 4, judging the actual water inlet value VFruit of Chinese wolfberryWhether the water inlet quantity is less than the preset water inlet quantity value VPreparation ofPreferably, the actual intake water amount value V is judgedFruit of Chinese wolfberryWhether the water inlet quantity is less than the preset water inlet quantity value N VPreparation ofIf N is a correction coefficient, turning to the step 5 if N is a correction coefficient, otherwise, turning to the step 6;
and 5, according to a formula tn ═ K ═ V (V)Preparation of-VFruit of Chinese wolfberry) A, calculating the water replenishing working time of the water inlet valve to replenish water, wherein a is VFruit of Chinese wolfberryT, K is a compensation coefficient;
and 6, finishing water inflow.
The third preferred embodiment:
the preferred embodiment provides a water level correction control method for a washing machine. As shown in fig. 3, the method specifically includes the following steps:
step 1, determining a preset water inlet value V according to clothes to be cleanedPreparation of；
Step 2, water starts to enter after the water inlet valve acts, and the temperature sensor detects an initial water temperature value T (n +1) when water enters this time, wherein n is the judged times of the current accumulated actual water inlet value and the preset water inlet value;
step 3, judging whether water inflow is finished, if so, turning to step 4, and if not, turning to step 2 to continue water inflow;
step 4, recording water inlet information of the water inlet, namely the water inlet time t1n, heating time t2n, and a heated water temperature value T (n +2), and calculating a temperature difference △ T ═ T (n +2) -T (n + 1);
step 5, calculating the current accumulative totalValue of water intake
Figure BDA0000778965660000061
Wherein, V00; the actual water inflow value after any water inflow is as follows: vn+1＝1000*P*t2n/(C ρ Δ T), wherein △ T ═ T (n +2) -T (n +1),
c is the specific heat capacity of water, and the unit is Joule/kilogram-degree centigrade;
rho is the density of water in kilograms per cubic meter;
Vn+1the actual water inlet volume of any time after water inlet is carried out, and the unit is liter;
△ T is the temperature change in degrees Celsius;
p is the electric power of the heating pipe, and the unit is tile;
t2n is the heating time in seconds.
Step 6, judging VFruit of Chinese wolfberryWhether or not it is less than or equal to N VPreparation ofIf yes, turning to the step 7, otherwise, turning to the step 8, wherein N is a correction coefficient, and the value range of N is [0.85, 1.15 ]]Preferably, [0.9, 1.05 ]]；
And 7, calculating the working time of the water inlet valve during water replenishing, and then turning to the step 2, wherein the working time of the water inlet valve during water replenishing is as follows: t is t3n＝K*(VPreparation of-VFruit of Chinese wolfberry) A, wherein a ═ V1/t10；
K is a compensation coefficient, and is determined according to the water pressure equivalence during actual water inflow, wherein the K values of different water inflow water pressures are different;
a is water inlet speed, and the unit is liter/second;
t10 is the water inlet time of the first water inlet, and the unit is second;
V1the actual water inlet volume after the first water inlet is measured in liters;
and 8, finishing water inflow.
N appearing in the embodiment is the judged times of the current accumulated actual water inlet quantity value and the preset water inlet quantity value; when n is equal to 0, step 2 is executed for the first time, and the judgment of the accumulated actual water inlet quantity value and the preset water inlet quantity value is not performed yetWhen n is reached, the water inflow is the first water inflow>When the water inlet quantity value is 0, namely when the judged times of the accumulated actual water inlet quantity value and the preset water inlet quantity value are at least one time, the process of the step 2 is executed again, namely the water replenishing process, at the moment, the water inlet speed can be obtained through the process of first water inlet, and then the formula t is used for obtaining the water inlet speed3n＝K*(VPreparation of-VFruit of Chinese wolfberry) A obtaining the action time t of water inlet of the water inlet valve3n, and the action time t of the water inlet valve3n and the water inlet time t during the water replenishing1n are the same.
The washing machine water level correction control method of the embodiment does not need to add functional elements, has higher water level control accuracy, and is simple and easy to realize.
The preferred embodiment four:
the preferred embodiment provides a water level correction control method for a washing machine. The method comprises the steps of obtaining a third value through any two values of the heating time of the washing machine, the water temperature difference value before and after heating and the water inlet quantity value, and judging whether water is required to be supplemented according to the comparison result of the third value and a target value.
The differences from the first to the third preferred embodiments are that: when the third value is the actual water inlet value obtained by detection and the water temperature difference value before and after heating, the third value is substituted into the formula V of 1000P T/[ C ρ (T)Powder-TFirst stage)]When the actual heating time of the washing machine is obtained through calculation, the target value is the theoretical heating time of the washing machine obtained through calculation according to the preset water inlet value and the water temperature difference value before and after heating, and whether water is required to be supplemented or not is determined through the comparison result of the actual heating time of the washing machine and the theoretical heating time of the washing machine; when the third value is the actual heating time of the washing machine obtained according to the preset water inlet value and the detection, the third value is substituted into the formula V of 1000P T/[ C P (T)Powder-TFirst stage)]When the theoretical water temperature difference before and after heating is calculated, the target value is the actual water temperature difference before and after heating obtained through detection, whether water is required to be supplemented or not is determined through a comparison result of the theoretical water temperature difference before and after heating and the actual water temperature difference before and after heating, if the theoretical water temperature difference before and after heating is smaller than the actual water temperature difference before and after heating, the water in the barrel is slightly less, and water is required to be supplemented, or the water can be supplemented when the theoretical water temperature difference before and after heating is smaller than theAnd comparing the heated theoretical temperature value obtained by subtracting the initial temperature value from the difference value of the theoretical water temperatures before and after the heating with the detected heated actual temperature value, namely, when the heated theoretical temperature value is less than the heated actual temperature value, the water quantity in the barrel is less and water needs to be supplemented.
Preferred embodiment five:
the present preferred embodiment provides a washing machine employing the water level correction control method according to any one of the first to fourth preferred embodiments. The washing machine is more convenient to use and can clean clothes more cleanly.
The embodiments described above are only preferred embodiments of the present invention, rather than limitations, and modifications of the embodiments of the present invention or equivalent substitutions for some features without departing from the spirit of the present invention are intended to be included within the scope of the claims. The scope of protection of the present invention also includes any alternative technical solutions that can be conceived by a person skilled in the art without inventive effort.

Claims (8)

1. A washing machine water level correction control method is characterized in that a third value is obtained through any two values of the heating time of the washing machine, the water temperature difference value before and after heating and the water inlet value, and whether water is required to be supplemented or not is judged according to the comparison result of the third value and a target value; water inlet quantity value V and initial water temperature value TFirst stageHeating time T and heated water temperature value TPowderThe relationship between them is: v1000 × P × T/[ C × ρ (T)Powder-TFirst stage)]Wherein, P is the electric power of the heating pipe; c is the specific heat capacity of water; ρ is the density of water.
2. The water level correction control method of a washing machine according to claim 1, wherein the target value is a preset water intake value when the third value is an actual water intake value calculated from a heating time of the washing machine and a difference between water temperatures before and after heating; or
When the third value is the actual heating time of the washing machine calculated according to the actual water inflow value and the water temperature difference value before and after heating, the target value is the theoretical heating time of the washing machine calculated according to the preset water inflow value and the water temperature difference value before and after heating; or
When the third value is a theoretical water temperature difference value before and after heating calculated according to the preset water inlet value and the actual heating time of the washing machine, the target value is an actual water temperature difference value before and after heating obtained through detection; or
And when the third value is a theoretical water temperature value after heating calculated according to the preset water inlet value and the actual heating time of the washing machine, the target value is an actual water temperature value after heating obtained through detection.
3. The method of claim 2, wherein the actual water inlet amount is calculated according to a formula after the water is supplied to the washing machine, and if the actual water inlet amount is smaller than the preset water inlet amount, the water replenishing operation time of the water inlet valve is calculated according to a relation between the water replenishing amount and the water inlet speed so as to replenish water; and if the actual water inflow value is larger than the preset water inflow value, ending water inflow.
4. A water level correction control method for a washing machine according to any one of claims 1 to 3, characterized in that the control method comprises the following steps:
step 1, determining a preset water inlet value V according to clothes to be cleanedPreparation of；
Step 2, water starts to enter after the water inlet valve acts, and the temperature sensor detects an initial water temperature value T (n +1) when water enters this time, wherein n is the judged times of the current accumulated actual water inlet value and the preset water inlet value;
step 3, judging whether water inflow is finished, if so, turning to step 4, and if not, turning to step 2 to continue water inflow;
step 4, recording the water inlet time t1n, heating time t2n, and a heated water temperature value T (n +2), and calculating a temperature difference △ T ═ T (n +2) -T (n + 1);
step 5, calculating the current accumulated actual water inlet value
Figure FDA0002369363510000021
Wherein, V0＝0；
Step 6, judging VFruit of Chinese wolfberryWhether or not it is less than or equal to N VPreparation ofIf yes, turning to the step 7, otherwise, turning to the step 8, wherein N is a correction coefficient, and the value range of N is [0.85, 1.15 ]]；
Step 7, calculating the working time of the water inlet valve during water replenishing and then turning to the step 2;
and 8, finishing water inflow.
5. The water level correction control method of a washing machine according to claim 4, wherein the actual water inlet value after any water inlet in step 5 is:
Vn+1＝1000*P*t2n/(C ρ Δ T), wherein △ T ═ T (n +2) -T (n +1),
c is the specific heat capacity of water, and the unit is Joule/kilogram-degree centigrade;
rho is the density of water in kilograms per cubic meter;
Vn+1the actual water inlet volume of any time after water inlet is carried out, and the unit is liter;
△ T is the temperature change in degrees Celsius;
p is the electric power of the heating pipe, and the unit is tile;
t2n is the heating time in seconds.
6. The water level correction control method of a washing machine as claimed in claim 5, wherein the operation time of the water inlet valve at the time of water supplement in step 7 is: t is t3n＝K*(VPreparation of-VFruit of Chinese wolfberry) A, wherein a ═ V1/t10；
K is a compensation coefficient;
a is water inlet speed, and the unit is liter/second;
t10 is the water inlet time of the first water inlet, and the unit is second;
V1the actual water inlet volume after the first water inletThe unit is liter.
7. The water level correction control method of a washing machine as claimed in claim 6, wherein when n is greater than n>When the water inlet valve is at 0, namely when the judged times of the accumulated actual water inlet quantity value and the preset water inlet quantity value are at least one time, the action time of the water inlet valve in the step 2 is t3n, water inlet time t in step 41n＝t3n。
8. A washing machine, characterized in that the washing machine employs the water level correction control method as claimed in any one of claims 1 to 7.
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KR20190079281A (en) 2017-12-27 2019-07-05 엘지전자 주식회사 Laundry Treating Apparatus and Method thereof
CN111411476B (en) * 2018-12-18 2022-09-09 青岛海尔洗衣机有限公司 Control method of washing equipment
CN115106333A (en) * 2022-06-23 2022-09-27 北京小米移动软件有限公司 Washing equipment control method, device, equipment, storage medium and program product

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Effective date of registration: 20201109

Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China

Patentee after: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd.

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Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China

Patentee before: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd.

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