CN1621597A - Method for controlling dewatering operation of washing machine - Google Patents

Method for controlling dewatering operation of washing machine Download PDF

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Publication number
CN1621597A
CN1621597A CNA2004100786222A CN200410078622A CN1621597A CN 1621597 A CN1621597 A CN 1621597A CN A2004100786222 A CNA2004100786222 A CN A2004100786222A CN 200410078622 A CN200410078622 A CN 200410078622A CN 1621597 A CN1621597 A CN 1621597A
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China
Prior art keywords
cylinder
eccentric position
initial
current
detected
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Pending
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CNA2004100786222A
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Chinese (zh)
Inventor
李泰喜
徐贤锡
洪尚郁
崔炳杰
诸炳秀
洪文姬
全时汶
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LG Electronics Inc
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LG Electronics Inc
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Publication of CN1621597A publication Critical patent/CN1621597A/en
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00Control of operations performed in washing machines or washer-dryers 
    • D06F33/30Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48Preventing or reducing imbalance or noise
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26Unbalance; Noise level

Abstract

A method for controlling dewatering of a washing machine includes detecting an initial reference eccentric position of a drum and an initial amount of eccentricity while a drum of a washing machine is rotated at a low speed, detecting a current eccentric position and a current amount of eccentricity of a drum while the drum is rotated at a low speed again after being rotated at a high speed, and controlling dewatering operation based on the detected initial reference eccentric position, the initial amount of eccentricity, the current eccentric position and the current amount of eccentricity.

Description

Be used to control the method for dewatering operation of washing machine
Technical field
The present invention relates to a kind of washing machine, especially relate to a kind of method that is used to control dewatering operation of washing machine.
Background technology
Thereby washing machine is a kind of by carrying out the machine of washing process, rinse cycle and dehydration washing clothes usually.According to washing methods, washing machine can be divided into impeller-type, stirring-type, drum-type etc.Hereinafter, below with reference to Fig. 1 tumbling-box washing machine is described.
Fig. 1 shows the sectional view according to the tumbling-box washing machine structure of conventional art.
As shown in FIG., this tumbling-box washing machine comprises a housing 12; A wash bucket 17 that is installed in housing 12 inside; And rotation is arranged in the cylinder 15 of wash bucket 17 inside.
Hereinafter, tumbling-box washing machine structure according to conventional art will be described below.
At first, housing 12 has the cuboid profile, and for from wherein packing/take out clothing into, a hole 22 is formed at the panel of housing 12.The side that the door 23 that is used for opening/closing hole 22 is installed in hole 22.In addition, a wash bucket 17 that is used to receive washings is installed in the housing 12, and in order to support and 17, one support springs 11 of damping wash bucket and damper 18 are installed in the upside and the downside of wash bucket 17 respectively.
Link to each other with wash bucket 17 rear portions in order to rotate 15, one supports 13 of back-up roller, and the drum drive motor 14 that is used for swing roller 15 is connected integratedly with the rear side surface of support 13.
For washings being sent into the upper area that 17, one water supply pipe (not shown) of wash bucket and feed water valve (not shown) are installed in wash bucket 17.In order to discharge washings by drainpipe 16, a draining pump 19 is installed in the lower area of wash bucket 17.
For washings being discharged by wash bucket 17 and the washings of discharging being circulated to wash bucket 17 upper areas, circulating water pipe 20 is installed in a side of drainpipe 16.The circulating pump 21 that is used for the pumping washings is installed on circulating water pipe 20.
Therefore, in clothing is contained in cylinder 15 and when cylinder 15 adds washing agent and washings, controller (not shown) index drum drive motors 14 is with swing roller 15 and drive circulating pump 21 with circulation cleaning water, thereby carries out washing process.
After this, when washing process was finished, controller control draining pump 19 and drum drive motor 14 were carried out drainage procedure and dehydration successively, and washings are repeatedly sent into wash bucket 17 to carry out rinse cycle., carry out rinse cycle here at every turn, carry out drainage procedure and dehydration respectively.
Hereinafter, below with reference to Fig. 2,3 method that is used to control dewatering operation of washing machine is described.
Fig. 2 shows the operational flowchart according to the tumbling-box washing machine dehydrating operations control method of conventional art.
Curve shown in Figure 3 shows the process that is used to detect offset and carries out dehydration behind the low-speed detection offset.
At first, when the pattern of tumbling-box washing machine is converted to dehydration mode (S1), detect the offset of cylinder in tumbling-box washing machine.For example, when the state in clothing is arranged in cylinder 15 is prejudicially carried out dehydration, the off-centre of clothing cause cylinder 15, wash bucket 17 and cylinder 15 the support member (not shown) damage and be forced to wearing and tearing.Therefore, in order to prevent to damage and be forced to wearing and tearing, before dehydration, to detect the offset (S2) of cylinder 15.
After detecting the offset of cylinder 15, when detected offset during less than preset reference value, cylinder 15 is with rotation at a high speed, thereby carries out dehydration (S3, S5, S6).
On the other hand, when the offset of detected cylinder 15 during greater than preset reference value, cylinder 15 stops and not carrying out dehydrating operations.That is to say, when detected offset during greater than preset reference value (standard value of cylinder offset), be used to stop then the minimal manipulation of head roll 15 and repeatedly carry out several times, at most repeatedly carry out tens of times, turn back to the step (S3, S4) that detects offset then.
Yet in the tumbling-box washing machine according to conventional art, the offset that is converted to dehydration mode and cylinder 15 when the pattern of tumbling-box washing machine is during less than preset reference value, and cylinder 15 is with rotation at a high speed, thereby carries out dehydrating operations.Then, depend on the clothing kind in the cylinder, the amount of moisture of discharge dissimilates.That is to say that the cylinder 15 with low moisture content clothing and high moisture content clothing rotates with high speed (for example 600rpm), thereby has increased offset.If offset increases when cylinder 15 rotates with high speed, the vibration of washing machine and noise also increase simultaneously like this.
At U.S. Patent number 6,615, the detailed description according to the washing machine of conventional art is disclosed in 619 and 6,612,138.
Summary of the invention
Therefore, an object of the present invention is to provide a kind of method that is used to control dewatering operation of washing machine, this method by when washing machine drum with low speed rotation initial reference eccentric position and the initial eccentricity amount of time detection cylinder, when cylinder to detect current eccentric position of cylinder and current offset after the rotation at a high speed during once more with low speed rotation, and according to detected initial reference eccentric position, initial eccentricity amount, current eccentric position and current offset control dehydrating operations, thereby can reduce high vibration and the noise that during dehydrating process produces.
For realizing these purposes and other advantages and according to purpose of the present invention, here do to specialize and briefly describe, provide a kind of method that is used to control dewatering operation of washing machine to comprise here: when cylinder detects the initial eccentricity amount of cylinder and the initial reference eccentric position in the cylinder during with low speed rotation; When cylinder with after the rotation at a high speed during once more with low speed rotation, detect current eccentric position in current offset of cylinder and the cylinder; And according to detected initial eccentricity amount, initial reference eccentric position, current offset and current eccentric position control dehydrating operations.
For realizing these purposes and other advantages and according to purpose of the present invention, here do to specialize and briefly describe, provide a kind of method that is used to control dewatering operation of washing machine to comprise initial eccentricity amount here when washing machine drum detection cylinder during with low speed rotation; The cylinder eccentric position of the maximum speed in the low-speed range of drum operations is defined as initial reference eccentric position; When rotating the back with low speed rotation at a high speed with the scheduled time, cylinder detects current offset; To be defined as current eccentric position with the cylinder eccentric position that rotates at a high speed the maximum speed in the low-speed range after the scheduled time; And according to the dehydrating operations of initial eccentricity amount, initial reference eccentric position, current offset and current eccentric position control washing machine.
By below in conjunction with the accompanying drawing detailed description of the invention, other purpose aforementioned and of the present invention, characteristics, aspect and advantage will become more obvious.
Description of drawings
Accompanying drawing provides further to be understood of the present invention, is a part of incorporating and form specification into.The specific embodiment shown in the present invention is enough to illustrate principle of the present invention with specification.
In the accompanying drawings:
Fig. 1 shows the sectional view according to the tumbling-box washing machine structure of conventional art;
Fig. 2 shows the operational flowchart that is used to control according to the tumbling-box washing machine dehydrating operations method of conventional art;
Curve shown in Figure 3 shows the process of carrying out dehydration behind the low-speed detection offset;
Fig. 4 shows and is used to control the operational flowchart of dewatering operation of washing machine method according to an embodiment of the invention;
Curve shown in Figure 5 shows the initial eccentricity amount that detects, initial reference eccentric position, current offset and current eccentric position and carries out the process of dehydration according to detected result;
Fig. 6 A shows the cylinder that has low and high moisture content clothing simultaneously; And
Curve shown in Fig. 6 B shows the clothing of initial reference eccentric position by low moisture content and the change of the clothing of high moisture content, and by differing the process that detects the eccentric position that changes.
The specific embodiment
Hereinafter, describe a preferred embodiment being used to control the dewatering operation of washing machine method that is configured to reduce the undue oscillation that during dehydrating process produces and noise below with reference to Fig. 4 to 6, this embodiment is by detecting initial reference eccentric position and the initial eccentricity amount of cylinder during with low speed rotation at the cylinder of washing machine; Detecting current eccentric position of cylinder and current offset after the rotation at a high speed during once more with low speed rotation, and realize above-mentioned purpose at cylinder based on detected initial reference eccentric position, initial eccentricity amount, current eccentric position and current offset control dehydrating operations.
Fig. 4 shows and is used to control the operational flowchart of dewatering operation of washing machine method according to an embodiment of the invention.
As shown in FIG., the method that is used to control according to dewatering operation of washing machine of the present invention comprises: the step when the pattern of washing machine changes dehydration mode into (S11); When washing machine drum detects the step (S12) of cylinder initial eccentricity amount during with low speed rotation; When cylinder is defined as the cylinder eccentric position during with low speed rotation the step (S13) of initial reference eccentric position with maximum speed rotation and when washing machine drum; When cylinder to detect the step (S14 and S15) of current offset after at a high speed rotating the scheduled time during once more with low speed rotation; And the eccentric position of cylinder is defined as current eccentric position (S16) when the speed of cylinder is the highest; Determine that difference between current offset and the initial offset is whether greater than the step (S17) of the first preset reference value α; When this difference during less than the first preset reference value α, carry out dehydrating operations (S20), and when this difference during greater than first preset reference value, detect the difference between current eccentric position and the initial reference eccentric position, promptly differ (S18), and determine to differ whether greater than the second preset reference value β; And when differing less than the second preset reference value β, carry out the step of dehydrating operations (S20), with when differing by more than second preset reference value, this step is returned step (S12), in step (S12), when stopping to detect the initial offset of cylinder after the number of times that presets is carried out in the operation of swing roller then.
Hereinafter, below with reference to Fig. 5 the method that is used to control according to dewatering operation of washing machine of the present invention is described.
Curve shown in Figure 5 shows the process that detects eccentric primary quantity, initial reference eccentric position, current offset and current eccentric position and carry out dehydration according to detected result.That is to say that curve shown in Figure 5 shows when cylinder and detects offset and initial reference eccentric position during with low speed rotation, and when cylinder with the process of the current offset of detection and current eccentric position during once more with low speed rotation after rotating the scheduled time at a high speed.
At first, when the pattern of washing machine changed dehydration mode (S11) into by washing mode, as shown in Figure 5, washing machine drum was with low speed rotation (for example, 200rpm (revolutions per minute)), and during rotation, detected the initial offset (S12) of cylinder.
In addition, become when the highest when the speed of cylinder when cylinder is with low speed rotation (for example 200rpm (revolutions per minute)), the eccentric position of cylinder is set at initial reference eccentric position.That is to say that as shown in Figure 5, in the situation that has detected the offset of cylinder when cylinder during with low speed rotation, the speed of cylinder changes by the offset of cylinder.At this moment, the eccentric position of cylinder is set to initial reference eccentric position when cylinder rotates with maximum speed.For example, under the situation of speed by the offset change of cylinder of cylinder, when the initial reference eccentric position of setting approaches ground most, the speed of cylinder is because gravity becomes the highest, and when the initial reference eccentric position of setting was in the position that rotates with respect to ground 180 degree, the speed of cylinder became minimum (S13).
After this, the drum of washing machine is to rotate (for example greater than the 400rpm) scheduled time (for example 20~30 seconds) at a high speed.That is to say, the cylinder of washing machine after with low speed rotation with rotation at a high speed, therefore with clothes dewatering 20~30 seconds.
After this, as shown in Figure 5, with after rotating the scheduled time (for example 20~30 seconds) at a high speed, cylinder is once more with low speed rotation, and when cylinder current offset (S14, S15) of detection during with low speed rotation.In addition, cylinder with after at a high speed rotating the scheduled time (for example 20~30 seconds) once more with low speed rotation in, when the speed of cylinder became maximum, the eccentric position of cylinder was defined as current eccentric position (S16).
After this, detect current offset and the difference between the initial eccentricity amount, and determine whether that detected difference greater than preset reference value (α) (S17).At this moment, this preset reference value (α) presets by experiment.
When this difference during less than preset reference value (α), the cylinder of washing machine with (for example 600rpm) at a high speed thus dehydrating operations (S20) is carried out in rotation.On the contrary, when difference during greater than preset reference value (α), detection differs, and this differs and is the difference between current eccentric position and the initial eccentric position, and determines whether detectedly to differ by more than preset reference value (β) (S18).Here, preset reference value (β) presets by experiment.Below with reference to Fig. 6 A and B the process that differs that detects is described.
Fig. 6 A shows the cylinder that has low moisture content clothing and high moisture content clothing simultaneously.Curve shown in Fig. 6 B shows initial reference eccentric position and changes by low moisture content clothing and high moisture content clothing, and the eccentric position of this change is by differing the process of detection.That is to say, curve shown in Fig. 6 B shows after the cylinder with low moisture content clothing and high moisture content clothing is with low speed rotation, with after rotating 20~30 seconds at a high speed during once more with low speed rotation eccentric position change, detect the process of the eccentric position of this change then.
Shown in Fig. 6 B, differ by detection, can detect the change of eccentric position.For example, when measuring corner with respect to the corner of initial reference eccentric position and this measurements and be 1000 degree (rotate 2.7 times), determine that eccentric position has moved 280 and spent (1000 spend-360 spends * 2=280 degree).That is to say that because initial eccentric position has moved 280 degree, people can know current eccentric position.
After this, when differing, the difference between promptly current eccentric position and the initial eccentric position is during less than preset reference value (β), thereby washing machine drum is carried out dehydrating operations with rotation at a high speed.On the contrary, when differing, be that difference between current eccentric position and the initial eccentric position is during greater than preset reference value (β), stop the operation execution of head roll then and preset number of times (for example 3 times), therefore this differs and becomes less than preset reference value (β), and it turns back to step (S12), (S19) that detects the initial eccentricity amount.
As described in so far, by detect the initial reference eccentric position and the initial eccentricity amount of cylinder during with low speed rotation when washing machine drum, when cylinder to detect current eccentric position of cylinder and current offset after the rotation at a high speed during once more with low speed rotation, and according to detected initial reference eccentric position, initial eccentricity amount, current eccentric position and current offset control dehydrating operations, the vibration and the noise that produce when the present invention can be reduced in dehydration.
Because the present invention can implement under the situation that does not break away from spirit of the present invention or essential feature in many ways, it will also be appreciated that the above-mentioned specific embodiment is not limited by any details of aforementioned specification, unless it is dated especially, can very wide in range explanation in the defined spirit and scope of claims, therefore belong to the border of claim and the institute in the scope and change and revise, therefore the equivalent structure of perhaps this border and scope also is contained in the appended claim.

Claims (7)

1. method that is used to control dewatering operation of washing machine comprises:
When cylinder during, detect the initial eccentricity amount of cylinder and the initial reference eccentric position in the cylinder with low speed rotation;
When cylinder with after the rotation at a high speed during once more with low speed rotation, detect current eccentric position in current offset of cylinder and the cylinder; And
According to detected initial eccentricity amount, initial reference eccentric position, current offset and current eccentric position control dehydrating operations.
2. method according to claim 1 wherein detects the initial eccentricity amount of cylinder during with low speed rotation when washing machine drum; And
To be defined as initial reference eccentric position at the cylinder eccentric position of the maximum speed in the low-speed range of drum operations.
3. method according to claim 1 wherein detects current offset during with low speed rotation after cylinder rotates the scheduled time at a high speed; And
To be defined as current eccentric position at cylinder eccentric position with the maximum speed in the low-speed range after rotating the scheduled time at a high speed.
4. method according to claim 1 also comprises:
Detect the difference of eccentricity value between current offset and the initial eccentricity amount;
Determine whether that detected eccentricity value difference is greater than first preset reference value;
When being not more than first preset reference value, detected eccentricity value difference carries out dehydrating operations;
When detected eccentricity value difference detects the difference of position between current eccentric position and the initial reference eccentric position during greater than first preset reference value;
Determine that whether position difference between current eccentric position and the initial reference eccentric position is greater than second preset reference value;
When being not more than second preset reference value, the position difference between current eccentric position and the initial reference eccentric position carries out dehydrating operations; And
When the position primary quantity between current eccentric position and the initial reference eccentric position during, return cylinder and stop the step that the initial eccentricity amount of cylinder is detected in the back greater than second preset reference value.
5. method that is used to control dewatering operation of washing machine comprises:
When washing machine drum detects the initial eccentricity amount of cylinder during with low speed rotation;
The cylinder eccentric position of maximum speed that will be in low-speed range is defined as initial reference eccentric position;
When cylinder with after at a high speed rotating the scheduled time during with low speed rotation, detect current offset, and will be defined as current eccentric position at the cylinder eccentric position of the maximum speed of cylinder; And
Dehydrating operations according to initial eccentricity amount, initial reference eccentric position, current offset and current eccentric position control washing machine.
6. method according to claim 5 also comprises:
Detect current offset and the eccentric difference between the initial eccentricity amount;
Determine whether that detected eccentric difference is greater than first preset reference value;
When being not more than first preset reference value, detected difference carries out dehydrating operations;
Detect the difference of position between current eccentric position and the initial reference eccentric position;
Determine whether that detected position difference is greater than second preset reference value;
When being not more than second preset reference value, detected position difference carries out dehydrating operations; And
, return cylinder and stop the step that the initial eccentricity amount of cylinder is detected in the back when differing by more than second preset reference value when detected.
7. method according to claim 6, the step of returning the initial eccentricity amount that detects cylinder after its intermediate roll stops comprises:
Number of times is preset in execution a series ofly stops the operation of head roll then, when differing by more than second preset reference value, returns the step of the initial eccentricity amount that detects cylinder when detected then.
CNA2004100786222A 2003-11-27 2004-09-14 Method for controlling dewatering operation of washing machine Pending CN1621597A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0085274A KR100511289B1 (en) 2003-11-27 2003-11-27 Drying driving method for washing machine
KR85274/2003 2003-11-27

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CN1621597A true CN1621597A (en) 2005-06-01

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US (1) US20050115006A1 (en)
JP (1) JP2005152593A (en)
KR (1) KR100511289B1 (en)
CN (1) CN1621597A (en)
DE (1) DE102004034193B4 (en)

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CN105019191A (en) * 2014-04-30 2015-11-04 青岛海尔洗衣机有限公司 Eccentricity detection method for washing machine
CN105200712A (en) * 2014-06-17 2015-12-30 青岛海尔洗衣机有限公司 Washing machine dewatering balancing method and washing machine
CN111058228A (en) * 2019-12-31 2020-04-24 合肥海尔滚筒洗衣机有限公司 Dehydration control method for washing equipment
CN112481934A (en) * 2020-11-20 2021-03-12 合肥美菱物联科技有限公司 Washing machine eccentricity detection device and detection method thereof

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CN104032538A (en) * 2013-03-06 2014-09-10 海尔集团公司 Washing machine spin-drying control method and washing machine
CN104032538B (en) * 2013-03-06 2016-12-28 海尔集团公司 Washing machine dehydration control method and washing machine
CN105019191A (en) * 2014-04-30 2015-11-04 青岛海尔洗衣机有限公司 Eccentricity detection method for washing machine
CN105019191B (en) * 2014-04-30 2019-11-05 重庆海尔洗衣机有限公司 A kind of washing machine eccentric detection method
CN105200712A (en) * 2014-06-17 2015-12-30 青岛海尔洗衣机有限公司 Washing machine dewatering balancing method and washing machine
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CN111058228A (en) * 2019-12-31 2020-04-24 合肥海尔滚筒洗衣机有限公司 Dehydration control method for washing equipment
CN112481934A (en) * 2020-11-20 2021-03-12 合肥美菱物联科技有限公司 Washing machine eccentricity detection device and detection method thereof

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KR20050051483A (en) 2005-06-01
US20050115006A1 (en) 2005-06-02
DE102004034193B4 (en) 2008-03-20
KR100511289B1 (en) 2005-08-31
DE102004034193A1 (en) 2005-06-30

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