CN101407985B - Method for controlling safe on-off of washing machine - Google Patents
Method for controlling safe on-off of washing machine Download PDFInfo
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- CN101407985B CN101407985B CN 200810061176 CN200810061176A CN101407985B CN 101407985 B CN101407985 B CN 101407985B CN 200810061176 CN200810061176 CN 200810061176 CN 200810061176 A CN200810061176 A CN 200810061176A CN 101407985 B CN101407985 B CN 101407985B
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- washing machine
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- dehydration
- revolution speed
- dehydration bucket
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Abstract
The invention discloses a control method of a safety switch of a washing machine, which comprises the following steps: a dehydration cylinder rotating speed detecting device is arranged on the washing machine and connected with the control chip of the washing machine, when the dehydration cylinder starts working, the control chip detects and calculates the rotating speed of the dehydration cylinder, and when the rotating speed of the dehydration cylinder is lower than a set value, the control chip disconnects the safety switch of the washing machine. The method effectively solves the problems of the existing washing machines that the control precision of the safety switch is low, the phenomenon that the dehydration cylinder impacts the outer cylinder is easy to happen, and the washing machine automatically moves during the dehydration process, and also the problem that the safety switch fails to function and the motor is easily damaged when the dehydration cylinder is hard to be started or rotates extremely slowly. The method has simple structure, low cost and good control effect, thus being worthy of generalization and application.
Description
Technical field
The present invention relates to a kind of washing machine, especially a kind of control method that can improve the safe on-off of washing machine of washing machine security performance.
Background technology
Washing machine is very universal, and it is that washings, washing agent and mechanical force are mutually combined, and realizes cleaning the purpose of clothing.The mechanical force of modern washing machine be exactly the impeller that drives the wash bucket bottom through motor with along counterclockwise alternately rotation realize driving clothing and roll, rotate, make clothing and clothing, clothing and impeller, clothing and barrel between mutual friction and reach the purpose of clean clothing mutually.
In the laundry processes, non-equilibrium state takes place in clothing easily in the process that clothing rolls, rotates, and especially in the dehydration of washing machine, the non-equilibrium state of dehydration bucket can often occur.Present most of washing machine all is to adopt the structure of safety switch to carry out imbalance to detect.This control requires very high to the accuracy degree of safety switch construction; And when uneven critical condition, can dewater bucket constantly outer barrel of bump and situation that safety switch does not still cut off; In the dehydration of washing machine, even the problem of washing machine automatic shift can appear.It open day was the uneven checkout gear that patent document that October 15, publication number in 2003 are CN1448577 discloses a kind of washing machine; Adopted the rod member of displacement and the swing detecting device of the dehydration bucket of the sensor composition that detects the rod member displacement through the swing of dehydration bucket, this checkout gear is installed on the housing that is arranged on the supply unit on the outer container.Sensor is made up of light-emitting component and photo detector, can detect the number of times of rod member displacement through sensor, and based on this number of times decision whether stop to dewater rotation of bucket, thereby the imbalance when the dehydration bucket rotated is controlled.
This detection mode has two shortcomings; The one, the swing of dehydration bucket under non-equilibrium state is irregular; When swing takes place; If the residing position of checkout gear is at the smaller part of dehydration bucket amplitude of fluctuation, then checkout gear can't detect the swing situation, also proceeding with regard to uncontrollable uneven swing.The 2nd, under the laundry machine dehydration state; If clothes is too heavy in the dehydration bucket, the dehydration bucket is difficult to start or rotates very slow, and dehydration this moment bucket is in poised state probably; Be easy to cause motor for washer to damage like this, and uneven checkout gear can't be made judgement and control to this.
Summary of the invention
The present invention is not for the safety switch control accuracy that solves present washing machine and exist is not high, the problem that washing machine moves automatically in outer bucket of dehydration bucket bump and the dehydration takes place during dehydration easily and a kind of control method of safe on-off of washing machine is provided.
Another object of the present invention is to be difficult to start or to rotate when very slow for solving dehydration bucket that present washing machine exists, and safety switch works and damages the problem of motor easily and a kind of control method of safe on-off of washing machine is provided.
The present invention reaches the concrete technical scheme that above-mentioned technical purpose adopts to be: the control method of safe on-off of washing machine is that a dehydration bucket revolution speed detector is set on washing machine; Turn round when speed detector is arranged on the rotation of dehydration bucket and swing near the body of less relatively line shaft; The revolution speed detector is a Hall element; With corresponding line shaft one side of Hall element magnet is set; This revolution speed detector connects the control chip of washing machine, and when the dehydration bucket was started working, control chip detected and calculate the revolution speed of dehydration bucket; When its revolution speed was changeed less than per minute 300 after the dehydration bucket was started working three seconds, control chip broke off the safety switch of washing machine.Dehydration bucket revolution speed detector is set on washing machine, and the revolution speed detector feeds back signal to chip, makes chip can accurately detect the revolution speed of dehydration bucket in real time.When the dehydration bucket is started working; Revolution speed detects and just begins, and chip can be read the position signalling of sensor input, and the time interval of adjacent twice position signalling of sensor is t; As time interval t during greater than the maximum time interval T max that sets; The present dehydration bucket revolution speed of program acquiescence is lower than a certain specific revolution speed, just cuts off the safety switch of washing machine, and it is unusual to report that simultaneously the washing machine imbalance detects.In addition, do not read sensor input position signal at the appointed time, show that then dehydration bucket stall or revolution speed are extremely slow, cut off the safety switch of washing machine equally like fruit chip.General dehydrating vessel in washing machine is started working, and its revolution speed should reach more than per minute 300 changes after three seconds, and the size of these data and washing machine capacity, structure etc. are relevant, if the dehydration bucket turns round speed and reaches setting value, then washing machine begins operate as normal.Because no matter washing machine is in non-equilibrium state or load is overweight under poised state, the startup revolution speed of its dehydration bucket is all than slow many under the normal condition, therefore; Through detection, can make the security control of washing machine not only receive safety switch and the whole structure control of washing machine, and receive programme-control dehydration bucket revolution speed; Under both actings in conjunction; The security control of washing machine is more accurate, and is more timely, guaranteed the safe handling of washing machine.
The Hall element sound construction, volume is little, and is in light weight, and the life-span is long, and is easy for installation, and power consumption is little, and frequency is high, vibration resistance, the pollution or the corrosion of not being afraid of dust, greasy dirt, steam and salt fog etc. are particularly suitable on washing machine, using.
As preferably; Control chip is the main control chip of washing machine, and the main control chip that adopts washing machine need only add on the control program of original main control chip that as the control chip that dehydration bucket revolution speed detects and handles detecting control program gets final product; Carrying out detection control program enforcement revolution speed in the certain hour after the dehydration bucket is started working detects; Like this, as long as on washing machine, set up the fast detecting sensor of revolution, cost is low and be easy to control.
The control chip that dehydration bucket revolution speed detects and handles also can adopt independently auxiliary control chip version; Come the detection and the control of individual processing dehydration bucket revolution speed with auxiliary control chip; Auxiliary control chip carries out Detection & Controling to the revolution speed of dehydration bucket according to the working condition of washing machine in the certain hour after the work of dehydration bucket.
The revolution speed detector also can adopt photoelectric cell simple in structure, that cost is low.
The invention has the beneficial effects as follows: the safety switch control accuracy that it has solved present washing machine existence effectively is not high, the dehydration bucket takes place easily clash into the problem that washing machine moves automatically in outer bucket and the dehydration.Simultaneously, also solved dehydration bucket that present washing machine exists and be difficult to start or rotate when very slow, safety switch is inoperative and damage the problem of motor easily.The present invention is simple in structure, and cost is low, controls effectively, is worthy of popularization.
Description of drawings
Fig. 1 is a kind of flow diagram of the control method of safe on-off of washing machine of the present invention.
Fig. 2 is the program flow diagram of the control method safety switch control of safe on-off of washing machine of the present invention.
Fig. 3 is the program flow diagram that the control method revolution speed of safe on-off of washing machine of the present invention detects.
The specific embodiment
Pass through embodiment below, and combine accompanying drawing that the specific embodiment of technical scheme of the present invention is further described.
Embodiment 1
The block diagram of safe on-off of washing machine control method is as shown in Figure 1, and a dehydration bucket revolution speed detector is set on washing machine, near the body when the revolution speed detector is arranged on the dehydration bucket and rotates the less relatively line shaft of swing; The revolution speed detector is a Hall element; With corresponding line shaft one side of Hall element magnet is set, Hall element connects the main control chip of washing machine, a moving week of dehydration bucket revolution; Checkout gear will be given position signalling of control chip; After the dehydration bucket was started working, the main control chip began to detect and calculate the revolution speed of dehydration bucket, and its detection computations program circuit is as shown in Figure 3; When the dehydration bucket does not change or turn round speed less than setting value within a certain period of time; Control chip breaks off the safety switch of washing machine, reports that simultaneously the uneven detection of washing machine is unusual, and the program circuit that breaks off safety switch is as shown in Figure 2.Its revolution speed should reach more than per minute 300 commentaries on classics after general dehydrating vessel in washing machine was started working three seconds, reached setting value if turn round speed, then the washing machine operate as normal.
Embodiment 2
The Hall element of embodiment 2 connects the auxiliary control chip of setting up separately; When the dehydration bucket begins to rotate; Auxiliary control chip begins to detect and calculate the revolution speed of dehydration bucket; When dehydration bucket does not change or within a certain period of time revolution speed during less than setting value, auxiliary control chip breaks off the safety switch of washing machine, and all the other are identical with embodiment 1.
Embodiment 3
The revolution speed detector that embodiment 3 adopts is a photoelectric cell; Photoelectric cell is arranged on when the dehydration bucket rotates and swings near the less relatively line shaft; The generation and the receiving element of light are set on the body near line shaft one side; The generation of light is connected the main control chip of washing machine with receiving element, with the generation and corresponding line shaft one side of receiving element of light refractive body is set, and all the other are identical with embodiment 1.
Claims (2)
1. the method for controlling security of a washing machine; It is characterized in that: a dehydration bucket revolution speed detector is set on washing machine, and near the body when the revolution speed detector is arranged on the dehydration bucket and rotates the less relatively line shaft of swing, the revolution speed detector is a Hall element; With corresponding line shaft one side of Hall element magnet is set; This revolution speed detector connects the control chip of washing machine, and when the dehydration bucket was started working, control chip detected and calculate the revolution speed of dehydration bucket; When its revolution speed was changeed less than per minute 300 after the dehydration bucket was started working three seconds, control chip broke off the safety switch of washing machine.
2. the method for controlling security of washing machine according to claim 1 is characterized in that said control chip is the main control chip or the auxiliary control chip of washing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810061176 CN101407985B (en) | 2008-03-14 | 2008-03-14 | Method for controlling safe on-off of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810061176 CN101407985B (en) | 2008-03-14 | 2008-03-14 | Method for controlling safe on-off of washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101407985A CN101407985A (en) | 2009-04-15 |
| CN101407985B true CN101407985B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810061176 Expired - Fee Related CN101407985B (en) | 2008-03-14 | 2008-03-14 | Method for controlling safe on-off of washing machine |
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| CN (1) | CN101407985B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100088986A (en) * | 2009-02-02 | 2010-08-11 | 엘지전자 주식회사 | Controlling apparatus of washing machine and method the same |
| CN105506916B (en) * | 2014-09-25 | 2019-05-21 | 无锡小天鹅股份有限公司 | Washing machine and the method for determining washing machine load bias |
| CN104233710B (en) * | 2014-09-28 | 2016-09-14 | 南京创维家用电器有限公司 | The method and apparatus of detection unbalance of washing machine |
| CN105624971A (en) * | 2015-12-18 | 2016-06-01 | 南京创维家用电器有限公司 | Washing machine and control method thereof |
| CN107574624B (en) * | 2016-07-05 | 2021-08-17 | 青岛胶南海尔洗衣机有限公司 | Washing machine operation balance detection device and method |
| CN106124794A (en) * | 2016-08-03 | 2016-11-16 | 南京信息工程大学 | A kind of speed switch based on technique of laser imaging and speed detection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4411664A (en) * | 1982-04-30 | 1983-10-25 | General Electric Company | Washing machine with out-of-balance detection and correction capability |
| CN1106481A (en) * | 1993-08-26 | 1995-08-09 | 株式会社东芝 | Washing machine |
| CN1240848A (en) * | 1998-07-02 | 2000-01-12 | 三星电子株式会社 | Method for detecting unbalanced drum in drum type washing machine |
-
2008
- 2008-03-14 CN CN 200810061176 patent/CN101407985B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4411664A (en) * | 1982-04-30 | 1983-10-25 | General Electric Company | Washing machine with out-of-balance detection and correction capability |
| CN1106481A (en) * | 1993-08-26 | 1995-08-09 | 株式会社东芝 | Washing machine |
| CN1240848A (en) * | 1998-07-02 | 2000-01-12 | 三星电子株式会社 | Method for detecting unbalanced drum in drum type washing machine |
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| CN101407985A (en) | 2009-04-15 |
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Owner name: PANASONIC HOME APPLIANCES RESEARCH DEVELOPMENT ( H Free format text: FORMER OWNER: PANASONIC ELECTRICAL RESIDENCE EQUIPMENT MACHINE ( HANGZHOU ) CO., LTD. Effective date: 20100108 |
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Effective date of registration: 20100108 Address after: -A, 3, No. 6, song Qiao Road, Hangzhou economic and Technological Development Zone, Hangzhou, Zhejiang. Postal code: 310018 Applicant after: Panasonic home appliance research and development (Hangzhou) Co., Ltd. Co-applicant after: Hangzhou Panasonic Home Appliances Co., Ltd. Address before: Joe Road No. 2 Hangzhou pine post encoding city of Zhejiang Province, Hangzhou economic and Technological Development Zone: 310018 Applicant before: Panasonic electrified residential equipment machine (Hangzhou) Co., Ltd. Co-applicant before: Hangzhou Panasonic Home Appliances Co., Ltd. |
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