CN1240848A - Method for detecting unbalanced drum in drum type washing machine - Google Patents
Method for detecting unbalanced drum in drum type washing machine Download PDFInfo
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- CN1240848A CN1240848A CN 98118570 CN98118570A CN1240848A CN 1240848 A CN1240848 A CN 1240848A CN 98118570 CN98118570 CN 98118570 CN 98118570 A CN98118570 A CN 98118570A CN 1240848 A CN1240848 A CN 1240848A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005406 washing Methods 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009183 running Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
一种用于在滚筒型洗衣机中检测不平衡滚筒的方法。此方法中,转数的偏差被计算,当偏差大于预定不平衡指标时,判定滚筒不平衡。偏差是转数最大值最小值的差值。偏差的计算和不平衡的判定被重复执行。不需要测速仪在长时间内积累脉冲信号,不需要提供并执行附加的不平衡判定程序,这样可以在短时间内检测出不平衡滚筒。
A method for detecting an unbalanced drum in a drum type washing machine. In this method, the deviation of the number of revolutions is calculated, and when the deviation is greater than a predetermined unbalance index, it is judged that the drum is unbalanced. The deviation is the difference between the maximum and minimum revolutions. Calculation of deviation and determination of imbalance are repeatedly performed. There is no need for the speedometer to accumulate pulse signals for a long time, and it is not necessary to provide and execute an additional unbalance judgment program, so that the unbalanced drum can be detected in a short time.
Description
The present invention relates to detect in the drum-type washing machine (drum type washing machine) method of unbalanced drum, refer in detail to by the deviation of checking the cylinder revolution and detect whether unbalanced method of cylinder.
Fig. 1 is the perspective view of general drum-type washing machine, and Fig. 2 is the synoptic diagram that detects the device of unbalanced drum in the drum-type washing machine shown in Figure 1.Drum-type washing machine has body 1, is supported on bucket (tub) 2 in the body 1 and is installed in the cylinder that changes 3 of managing in 2 by not shown suspension and vibration absorber.
At an end of bucket 2 CD-ROM drive motor 5 that is used for head roll 3 has been installed, the door 8 of opening/closing bucket 2 has been installed in body 1 the place ahead.Be provided with control panel 10 in body 1 front upper place, the user is by the operation of control panel 10 control washing machines.
Be provided with power transmission (power transmission) 20 at the rear of bucket 2, power transmission 20 comprises respectively the belt pulley 21 that is fitted together with cylinder 3 and CD- ROM drive motor 5 and 22 and belt 23 that belt pulley 21 and 22 is connected with each other, when CD-ROM drive motor 5 runnings, power transmission 20 rotary drums 3.Meanwhile, washing machine has the tachymeter 50 of measuring cylinder 3 revolutions.
The operation of washing machine comprises washing operation, rinsing operation and dehydrating operations.For carrying out washing operation, the user opens door 8 and put into clothing in cylinder 3, and operation control panel 10 then.Control section 40 in washing machine is by the operation of user's operation control washing machine.
In washing operation, clothing is washed when CD-ROM drive motor 5 rotary drums 3.Promptly when cylinder was rotated, the clothing in the middle of the cylinder 3 was lifted and puts down by cylinder 3.In the case, the cleaning function of washing agent is with finishing by the impact force that acts on clothing.Cylinder 3 is by forward and reverse alternate rotation.
Meanwhile, in dehydrating operations, CD-ROM drive motor 5 is with high rotating speed head roll 3.The centrifugal force dehydration that the cylinder 3 that clothing is rotated is produced.
Because the high speed rotating of cylinder 3 in dehydrating operations, the vibration of cylinder 3 can take place, particularly, if the uneven distribution of clothing causes the imbalance of cylinder 3 in the cylinder 3, then vibration can strengthen.Such vibration can cause serious dehydrating operations unusual, and causes stopping of washer operation if vibrate conference.Therefore, washing machine detects unbalanced cylinder 3, and, if detect cylinder 3 imbalances, then carry out balancing run.
Fig. 3 has illustrated the method for general detection washing machine unbalanced drum.
At first, tachymeter 50 detects pulse signal according to the rotation of CD-ROM drive motor 5 in step S101, as pulse width or pulse period.In step S102, continue to detect pulse signal in the predetermined time cycle.The pulse signal that is recorded by tachymeter 50 is input to control assembly 40.
Balancing run is carried out by two-way rotary drum 3 alternately.Then, the clothing of cylinder 3 is evenly distributed, and cylinder 3 becomes balance like this, behind the balancing run, repeats said process.
Yet in the unbalanced drum method in general detection drum-type washing machine, control assembly 40 must accumulate pulse signal detecting imbalance at preset time in the cycle, thereby it is long to be used to detect the unbalanced time.In addition, serve as that unbalanced drum is detected on the basis for pulse signal with accumulation.Other uneven trace routine must be provided, and carry out these uneven trace routines and want the other expensive time.Therefore, dehydrating operations and balancing run can not be finished at short notice, and the used time lengthening of washer operation.
The present invention is used to solve above-mentioned prior art problems, and one of its purpose provides a kind of method that detects unbalanced drum in drum-type washing machine, and this method can detect imbalance within a short period of time.
For achieving the above object, the invention provides a kind of method that in drum-type washing machine, detects unbalanced drum, the method comprises the steps; Rotary drum is measured the cylinder revolution; Calculate the revolution deviation; And with this deviation is the imbalance that cylinder is judged on the basis.
In determining step, when deviation during less than predetermined balance index (criterion), cylinder is judged as balance, and when deviation during greater than predetermined uneven index, cylinder is formulated and is imbalance.
Best, balance index is set as 3rpm (per minute 3 changes) and uneven target setting becomes 10rpm (per minute 10 changes).
In addition, when deviation was between balance index and uneven index, the step of measurements and calculations was repeated.Deviation can be calculated by the difference of maximum revolution and minimum revolution.
According to the present invention, the pulse signal of tachymeter needn't accumulate in long-time, and needn't provide and carry out additional uneven trace routine, and like this, unbalanced drum can detect within a short period of time.
Various purpose of the present invention and advantage can be more obvious after the reference accompanying drawing has been described in detail.
Fig. 1 is the perspective view of general drum-type washing machine;
Fig. 2 is the synoptic diagram that detects the equipment of unbalanced drum in the drum-type washing machine shown in Figure 1;
Fig. 3 is the flow chart that detects the conventional method of unbalanced drum in drum-type washing machine; And
Fig. 4 is the flow chart according to the method for detection unbalanced drum of the present invention.
Describe the present invention below with reference to the accompanying drawings.
The component no longer identical with general washing machine shown in Figure 1 illustrates, and these parts invested identical reference number.
Fig. 4 is the flow chart of explanation according to detection unbalanced drum method of the present invention.
When washing operation was finished, control assembly 40 drove CD-ROM drive motor 5 with rotary drum 3.At this moment, the revolution of cylinder 3 changes according to the degree of irregularity that is contained in the clothing in the cylinder 3.Tachymeter 50 detects the deviation of cylinder 3 revolutions in the step 201.Deviation is preferably calculated by the maximum revolution of cylinder 3 and the difference of minimum revolution.
In step, less than predetermined balance index, control assembly 40 is judged the imbalance that cylinder 3 does not take place as if deviation in step 202.Such process repeats 10 times (step S203) to increase the reliability of judging.Balance index is 3rpm preferably.If in 10 repetitions of said process, do not detect imbalance, then in step S204, carry out dehydrating operations.
If deviation is greater than 3rpm, then control assembly 40 is compared deviation with predetermined uneven index in step S205.If deviation less than uneven index, is then carried out first step S201 again, greater than uneven index, then control assembly 40 judges that cylinders 3 are uneven as if deviation.For increasing the reliability of judging, such process weight 10 times (step S206).Uneven index preferably is made as 10rpm.If in 10 repetitions of said process, still can detect imbalance, then in step S207, carry out balancing run.
State as preceding, balancing run is finished by two way alternate ground rotary drum 3, and the clothing in the cylinder 3 is evenly distributed afterwards, and cylinder 3 becomes balance like this.After step S207 finishes balancing run in the step, repeat said process.
Present embodiment give an example, balance index and uneven index are respectively 3rpm and 10rpm, however these values can change and preferably decision by experiment according to the difference of drum-type washing machine type.
In addition, in an embodiment of the present invention, relatively the process of rotating speed deviation is repeated 10 times, yet this number of repetition can be provided with forr a short time of to shorten the execution detection used time of unbalanced method.Maybe can be provided with greatlyyer to increase the reliability that detects.In addition, testing process can be carried out in whole dehydration continuously.
As mentioned above, according to the present invention, need not accumulate the pulse signal of tachymeter in long-time, not need to provide and carry out additional uneven trace routine, like this, the imbalance of cylinder can detect at short notice.
Though the present invention is had been described in detail, should be understood that obviously these describe only explanation and give an example, rather than be used for limiting the present invention that the spirit and scope of the present invention should be only limited by the clause of claims by as above embodiment.
Claims (8)
1. method that detects unbalanced drum in drum-type washing machine, this method comprises the steps:
Rotate described cylinder;
Measure described cylinder revolution;
Calculate the revolution deviation; And
With described deviation is the imbalance that described cylinder is judged on the basis.
2. according to the method for the described detection unbalanced drum of claim 1, wherein, when described deviation during less than predetermined balance index, described cylinder is judged as balance.
3. according to the method for the described detection unbalanced drum of claim 2, wherein said balance index be 3rpm (rev/min).
4. according to the method for the described detection unbalanced drum of claim 2, wherein, when described deviation during greater than predetermined uneven index, described cylinder is judged as imbalance.
5. according to the method for the described detection unbalanced drum of claim 4, wherein said uneven index is 10rpm.
6. according to the method for the described detection unbalanced drum of claim 4, wherein, when described deviation is between described balance index and described uneven index, repeat described measurements and calculations step.
7. according to the method for the described detection unbalanced drum of claim 1, wherein, described deviation is poor between the maximum revolution of described cylinder and the minimum revolution.
8. according to the method for the described detection unbalanced drum of claim 1, wherein, described measurements and calculations step is repeatedly carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98118570 CN1240848A (en) | 1998-07-02 | 1998-09-02 | Method for detecting unbalanced drum in drum type washing machine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR26510/98 | 1998-07-02 | ||
| CN 98118570 CN1240848A (en) | 1998-07-02 | 1998-09-02 | Method for detecting unbalanced drum in drum type washing machine |
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| Publication Number | Publication Date |
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| CN1240848A true CN1240848A (en) | 2000-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98118570 Pending CN1240848A (en) | 1998-07-02 | 1998-09-02 | Method for detecting unbalanced drum in drum type washing machine |
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| CN (1) | CN1240848A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407985B (en) * | 2008-03-14 | 2012-05-30 | 松下家电研究开发（杭州）有限公司 | Control method of safety switch of washing machine |
| CN102549208A (en) * | 2009-08-27 | 2012-07-04 | Lg电子株式会社 | Control method of laundry machine |
| CN102828382A (en) * | 2011-06-15 | 2012-12-19 | 苏州三星电子有限公司 | Method for judging eccentric state of drum washing machine before dehydrating at high speed |
| CN103911804A (en) * | 2013-01-07 | 2014-07-09 | 海尔集团公司 | Dehydration distribution control method of washing machine |
| CN104652093A (en) * | 2013-11-25 | 2015-05-27 | 海尔集团公司 | Washing machine with eccentric detecting function and eccentric detecting method |
| CN105155206A (en) * | 2015-07-31 | 2015-12-16 | 广东威灵电机制造有限公司 | Roller washing machine and imbalance detection method and device for same |
| WO2023057422A1 (en) | 2021-10-06 | 2023-04-13 | Bayer Aktiengesellschaft | Universal buffer in methods for safe and rapid detection of pathogen infection |
-
1998
- 1998-09-02 CN CN 98118570 patent/CN1240848A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407985B (en) * | 2008-03-14 | 2012-05-30 | 松下家电研究开发（杭州）有限公司 | Control method of safety switch of washing machine |
| CN102549208A (en) * | 2009-08-27 | 2012-07-04 | Lg电子株式会社 | Control method of laundry machine |
| US9039786B2 (en) | 2009-08-27 | 2015-05-26 | Lg Electronics Inc. | Control method of laundry machine |
| CN102549208B (en) * | 2009-08-27 | 2015-07-08 | Lg电子株式会社 | Control method of laundry machine |
| CN102828382A (en) * | 2011-06-15 | 2012-12-19 | 苏州三星电子有限公司 | Method for judging eccentric state of drum washing machine before dehydrating at high speed |
| CN103911804A (en) * | 2013-01-07 | 2014-07-09 | 海尔集团公司 | Dehydration distribution control method of washing machine |
| CN103911804B (en) * | 2013-01-07 | 2017-09-29 | 青岛海尔滚筒洗衣机有限公司 | A kind of laundry machine dehydration distribution control method |
| CN104652093A (en) * | 2013-11-25 | 2015-05-27 | 海尔集团公司 | Washing machine with eccentric detecting function and eccentric detecting method |
| CN105155206A (en) * | 2015-07-31 | 2015-12-16 | 广东威灵电机制造有限公司 | Roller washing machine and imbalance detection method and device for same |
| WO2023057422A1 (en) | 2021-10-06 | 2023-04-13 | Bayer Aktiengesellschaft | Universal buffer in methods for safe and rapid detection of pathogen infection |
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