CN100552119C - A kind of tooth ring position detecting device for stirring type washing machine - Google Patents
A kind of tooth ring position detecting device for stirring type washing machine Download PDFInfo
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- CN100552119C CN100552119C CNB2008100658275A CN200810065827A CN100552119C CN 100552119 C CN100552119 C CN 100552119C CN B2008100658275 A CNB2008100658275 A CN B2008100658275A CN 200810065827 A CN200810065827 A CN 200810065827A CN 100552119 C CN100552119 C CN 100552119C
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- clutch
- position detecting
- electrode
- detecting circuit
- ring gear
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Abstract
The present invention relates to a kind of tooth ring position detecting device for stirring type washing machine, comprise clutch roller, position detecting circuit and the clutch switch feedback electrode that is connected with position detecting circuit and clutch power drives electrode, the clutch roller is provided with the primary importance and the second place, correspond respectively to the mixing position and the dehydration location of ring gear, wherein: when ring gear is positioned at dehydration location, the clutch switch feedback electrode is positioned at the primary importance of clutch roller, and position detecting circuit produces the dehydration location detection signal; When ring gear was positioned at mixing position, the clutch switch feedback electrode was positioned at the second place of clutch roller, and position detecting circuit produces the mixing position detection signal.The present invention can detect the washing machine tooth ring position automatically, by the driving change tooth ring position of deceleration synchronization motor, and by position detecting circuit feedback tooth ring position signal, switches thereby realize stirring with the convenient of the two kinds of working methods of dewatering.
Description
Technical field
The present invention relates to the agitator type washing machine tooth ring position and detect, more particularly, relate to a kind of tooth ring position detecting device for stirring type washing machine.
Background technology
Agitator type washing machine is popular in the many countries of America and Europe, has the vast market space.Agitator type washing machine comprises stirring (agitation) and dehydration (spin) two important steps in running.When agitator type washing machine stirred, washing machine inner tub and puddler broke away from, and drive motors just drives puddler and back and forth rotates, and by the friction of puddler and clothing, reached the purpose of cleaning clothing; And when dehydration, interior bucket need be combined closely with puddler, under the drive of motor, with the common rotation at a high speed of clothing, by the centrifugal force of moisture in the clothing, reaches the purpose of dehydration.Whether these two functions are when motor rotates in the difference that realizes on the mechanical location, with interior bucket locking.How detect the tooth ring position of agitator type washing machine by a kind of device, promptly mixing position and dehydration location are emphasis of the present invention with the change that makes things convenient for control mode.The present invention's realization of function for this reason provides a kind of new method of tooth ring position detection, and has been used in actual product.
Summary of the invention
The objective of the invention is at the problems referred to above, a kind of device that can detect the washing machine tooth ring position automatically is provided, driving by the deceleration synchronization motor, change tooth ring position, by position detecting circuit feedback tooth ring position signal, switch simultaneously thereby realize stirring with the convenient of two kinds of working methods of dehydration.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of tooth ring position detecting device for stirring type washing machine, it is characterized in that, comprise clutch roller, position detecting circuit and the clutch switch feedback electrode that is connected with position detecting circuit and clutch power drives electrode, the clutch roller is provided with the primary importance and the second place, correspond respectively to the mixing position and the dehydration location of ring gear, wherein:
When ring gear was positioned at dehydration location, the clutch switch feedback electrode was positioned at the primary importance of clutch roller, and position detecting circuit produces the dehydration location detection signal;
When ring gear was positioned at mixing position, the clutch switch feedback electrode was positioned at the second place of clutch roller, and position detecting circuit produces the mixing position detection signal.
In tooth ring position detecting device for stirring type washing machine of the present invention, wherein:
When ring gear was positioned at dehydration location, the clutch switch feedback electrode was positioned at the primary importance of clutch roller, separated with clutch power drives electrode, and position detecting circuit does not produce square-wave signal;
When ring gear was positioned at mixing position, the clutch switch feedback electrode was positioned at the second place of clutch roller, separated with clutch power drives electrode, and position detecting circuit does not produce square-wave signal.
In tooth ring position detecting device for stirring type washing machine of the present invention, wherein:
When ring gear was positioned at from mixing position to dehydration location, between the second place, with clutch power drives electrode closure, position detecting circuit produced square-wave signal to the clutch switch feedback electrode in the primary importance of clutch roller;
When ring gear was positioned at from dehydration location to mixing position, between the primary importance, with clutch power drives electrode closure, position detecting circuit produced square-wave signal to the clutch switch feedback electrode in the second place of clutch roller.
In tooth ring position detecting device for stirring type washing machine of the present invention, primary importance is the narrow groove that is arranged on the clutch roller, and the second place is the wide groove that is arranged on the clutch roller, and wherein the width of wide groove is the twice of narrow groove.
In tooth ring position detecting device for stirring type washing machine of the present invention, position detecting circuit comprises clutch drive circuit and the clutch switch state-feedback circuit that is connected with MCU.
In tooth ring position detecting device for stirring type washing machine of the present invention, the clutch drive circuit comprises the bidirectional triode thyristor SCR2 that is connected with MCU, and MCU rotates the clutch synchronization motor by driving bidirectional triode thyristor SCR2.
In tooth ring position detecting device for stirring type washing machine of the present invention, the clutch switch state-feedback circuit comprise the optocoupler U12 that is connected with MCU and be connected optocoupler U12 and clutch power drives electrode between current-limiting resistance R101, R102, R103, R104.。
Implement tooth ring position detecting device for stirring type washing machine of the present invention, have following beneficial effect: 1, this device can the Intelligent Measurement tooth ring position, makes things convenient for the change of control mode, promptly stirs the conversion with two kinds of working methods of dehydration; 2, make product structure simpler, reduce cost.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Figure 1A is the structural representation of an embodiment of tooth ring position detecting device for stirring type washing machine of the present invention, and clutch switch feedback electrode and clutch power drives electrode are positioned at the primary importance of clutch roller among the figure;
Figure 1B is the structural representation of an embodiment of tooth ring position detecting device for stirring type washing machine of the present invention, and clutch switch feedback electrode and clutch power drives electrode are positioned at the second place of clutch roller among the figure;
Fig. 2 is the schematic diagram of the position detecting circuit of tooth ring position detecting device for stirring type washing machine of the present invention;
Fig. 3 is the workflow diagram of tooth ring position detecting device for stirring type washing machine of the present invention.
The specific embodiment
Bucket and puddler in clutch (clutch) has determined how to drive, promptly when clutch during at mixing position, bucket is locked in having only, and master control motor (PMSM) is by gearbox driving puddler; When clutch during at dehydration location, puddler is locked in interior bucket, and master control motor (PMSM) drives puddler and rotates simultaneously with interior bucket.Clutch (clutch) selection of Motor is the deceleration synchronization motor, need be driven by the 240V alternating voltage.
Agitator type washing machine ring gear 10 position detecting devices of the present invention comprise clutch roller 1, position detecting circuit 2 (as shown in Figure 2) and the clutch switch feedback electrode 3 that is connected with position detecting circuit 2 and clutch power drives electrode 4.The clutch roller is provided with the primary importance 5 and the second place 6, corresponds respectively to the mixing position and the dehydration location of ring gear 10.When ring gear 10 was positioned at mixing position, clutch switch feedback electrode 3 and clutch power drives electrode 4 were positioned at the primary importance 5 of clutch roller, and position detecting circuit 2 produces the mixing position detection signal.When ring gear 10 was positioned at dehydration location, clutch switch feedback electrode 3 and clutch power drives electrode 4 were positioned at the second place 6 of clutch roller, and position detecting circuit 2 produces the dehydration location detection signal.Primary importance 5 is for being arranged on first groove on the clutch roller, and the second place 6 is for being arranged on second groove on the clutch roller, and wherein the width of first groove is different with the width of second groove.
Figure 1A is the structural representation of an embodiment of agitator type washing machine ring gear 10 position detecting devices of the present invention, and clutch switch feedback electrode 3 and clutch power drives electrode 4 are positioned at the primary importance 5 of clutch roller among the figure.Figure 1B is the structural representation of an embodiment of agitator type washing machine ring gear 10 position detecting devices of the present invention, and clutch switch feedback electrode 3 and clutch power drives electrode 4 are positioned at the second place 6 of clutch roller among the figure.Figure 1A and Figure 1B are the structural representations that agitator type washing machine ring gear 10 position detecting devices of the present invention have been simplified.Corresponding to mixing position, clutch roller 1 is provided with a narrow groove, and promptly primary importance 5.And, on clutch roller 1, be provided with a wide groove corresponding to dehydration location, and promptly the second place 6, and wherein the width of wide groove is the twice of narrow recess width.When clutch roller 1 during at groove, clutch power drives electrode 4 and clutch switch feedback electrode 3 are opened, and not when groove, then closed.
The slewing rate of clutch roller 1 approximately was 28 degree/seconds, and promptly revolution needs 13 seconds.When the groove, be 0.8 second in the dwell time of mixing position and dehydration location, promptly equal 22 and spend through groove.In case clutch forwards a new position (stirring or dehydration) to, have a slight vibration of motor, to guarantee that clutch ring gear 10 is in correct position.The conversion time of clutch is approximate as follows: need 9 seconds (not comprising the clutch judder time) from being dewatered to whipping process; Need 6 seconds (not comprising the clutch judder time) from being stirred to dehydration.After powering on, need to find for 15 seconds the position (not comprising the clutch judder time) of clutch roller 1 at most, wherein the state of clutch is controlled automatically by single-chip microcomputer.
Below in conjunction with accompanying drawing, the detection of agitator type washing machine ring gear 10 position detecting devices of the present invention is described further.As shown in Figure 1, what the interior axle of master control rotor drove is the puddler of washing machine, and outer shaft drives washing machine inner tub, between motor internal rotor outer shaft and interior axle a rotary ring gear 10 is arranged.The slewing area of ring gear 10 is limited at one of 2 fixing positions (see figure 1), and these two positions are respectively dehydration location and mixing position.At mixing position, ring gear 10 discharges outer shaft, so can only drive impeller rotation by interior axle; At dehydration location, ring gear 10 forces outer shaft and interior axle to be stuck, and the impeller of washing machine and interior bucket just rotated together when motor rotated like this.The activity of ring gear 10 relies on clutch to drive, and clutch is a deceleration synchronization motor, by Clutch Control ring gear 10, thereby has also just controlled rotor and puddler, interior barrel relation.
The clutch motor velocity of rotation is constant, and the moving circle of revolution needs 12 seconds under the 50Hz power-frequency voltage drives, and the moving circle of revolution needs 10 seconds under the 60Hz power-frequency voltage drives.Clutch power drives electrode 4 among Figure 1A and Figure 1B and clutch switch feedback electrode 3 can disconnect when clutch roller 1 turns to the groove of washing location and two positions of dehydration location, and can be closed the position beyond the groove time.Clutch power drives electrode 4 and clutch switch feedback electrode 3 closures, then the signal on the clutch power drives electrode 4 can be that the square wave zero cross signal of 20Hz is input on the P1.6 input port of single-chip microcomputer by clutch switch feedback electrode 3 and position detecting circuit 2 (the please refer to Fig. 2) cycle of being transformed into, when clutch power drives electrode 4 and 3 disconnections of clutch switch feedback electrode, the square wave zero cross signal of feedback disappears.
The groove of corresponding mixing position is spent to 240 degree from 200, and clutch roller 1 turns over this angle under the 50Hz power-frequency voltage needs 1.333 seconds time; The groove of corresponding dehydration location is spent to 20 degree from 0, and 50Hz power-frequency voltage bottom roller turns over this angle needs 0.667 second time.The time that disconnects according to clutch power drives electrode 4 and clutch switch feedback electrode 3 just can judge that clutch dials the position of the tip 9 and ring gear 10 grooves 11, thereby the ring gear 10 of definite motor internal is at mixing position or dehydration location.
As shown in Figure 2, position detecting circuit 2 comprises clutch drive circuit 8 and the clutch switch state-feedback circuit 7 that is connected with MCU.Clutch drive circuit 8 comprises the bidirectional triode thyristor SCR2 that is connected with MCU, and MCU rotates the clutch synchronization motor by driving bidirectional triode thyristor SCR2.Clutch switch state-feedback circuit 7 comprise the optocoupler U12 that is connected with MCU and be connected optocoupler U12 and clutch power drives electrode 4 between current-limiting resistance R101, R102, R103, R104.MCU rotates the clutch synchronization motor by driving bidirectional triode thyristor SCR2 conducting.When clutch switch feedback electrode 3 is in groove location, clutch power drives electrode 4 and clutch switch feedback electrode 3 are separately, after power supply passes through current-limiting resistance R101, R102, R103, R104, can't drive optocoupler U12, so can't produce the square wave zero cross signal, the P1.6 mouth of MCU does not have the square wave zero cross signal.When clutch switch feedback electrode 3 is in outside the groove location, clutch power drives electrode 4 and 3 short circuits of clutch switch feedback electrode, power supply directly drives optocoupler U12 and produces the square wave zero cross signal, so the P1.6 mouth of MCU has the square wave zero cross signal.MCU can be according to said process as the foundation of judging agitator type washing machine ring gear 10 positions.
Fig. 3 is the workflow diagram of agitator type washing machine ring gear 10 position detecting devices of the present invention, and the point that clutch switch feedback electrode 3 and clutch power drives electrode 4 contact when closed is called the contact.During beginning, MCU can read the state of current clutch switch feedback electrode 3.If clutch switch feedback electrode 3 in groove, then increases timing register; If do not exist, then reduce timing register.When increasing timing register, if to the filtering time, MCU determines that then clutch switch feedback electrode 3 is in groove; If be less than the filtering time, MCU determines that then clutch switch feedback electrode 3 is not in groove.When reducing timing register, if to the filtering time, MCU determines that then clutch switch feedback electrode 3 is not in groove; If be less than the filtering time, MCU determines that then clutch switch feedback electrode 3 is in groove.When high-low level on the P1.6 of the MCU pin changed one time, counter began counting.When counter during greater than 100ms, MCU thinks that clutch switch feedback electrode 3 and clutch power drives electrode 4 disconnect; When counter during less than 20ms, MCU thinks clutch switch feedback electrode 3 and clutch power drives electrode 4 closures.Find during actual measurement that the theoretical value of calculating can not make clutch go to maximum position, thereby add the time delays of 800ms.
The present invention except that the foregoing description, the part that the primary importance 5 and the second place 6 of clutch roller can also be designed to two projectioies, the respectively mixing position and the dehydration location of corresponding ring gear 10.When ring gear 10 during at mixing position, clutch switch feedback electrode 3 is positioned at primary importance, and with clutch power drives electrode 4 closures, position detecting circuit 2 produces square-wave signals.When ring gear 10 during at dehydration location, clutch switch feedback electrode 3 is positioned at the second place, and with clutch power drives electrode 4 closures, position detecting circuit 2 produces square-wave signals.And when ring gear 10 during not at mixing position and dehydration location, clutch switch feedback electrode 3 is positioned at the position outside the primary importance 5 and the second place 6, separates with clutch power drives electrode 4, and position detecting circuit 2 does not produce square-wave signal.Then, MCU can according to time of said process as the foundation of judging agitator type washing machine ring gear 10 positions.
The present invention is described by some embodiment, and those skilled in the art know, under the situation that does not break away from the spirit and scope of the present invention, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under instruction of the present invention, can make amendment to these features and embodiment can not break away from the spirit and scope of the present invention to adapt to concrete situation and material.Therefore, the present invention is not subjected to the restriction of specific embodiment disclosed herein, and all interior embodiment of claim scope that fall into the application belong to protection scope of the present invention.
Claims (8)
1, a kind of tooth ring position detecting device for stirring type washing machine, it is characterized in that, comprise clutch roller, position detecting circuit and the clutch switch feedback electrode that is connected with position detecting circuit and clutch power drives electrode, the clutch roller is provided with the primary importance and the second place, correspond respectively to the mixing position and the dehydration location of ring gear, wherein:
When ring gear was positioned at dehydration location, the clutch switch feedback electrode was positioned at the primary importance of clutch roller, and position detecting circuit produces the dehydration location detection signal;
When ring gear was positioned at mixing position, the clutch switch feedback electrode was positioned at the second place of clutch roller, and position detecting circuit produces the mixing position detection signal.
2, checkout gear according to claim 1 is characterized in that, wherein:
When ring gear was positioned at dehydration location, the clutch switch feedback electrode was positioned at the primary importance of clutch roller, separated with clutch power drives electrode, and position detecting circuit does not produce square-wave signal;
When ring gear was positioned at mixing position, the clutch switch feedback electrode was positioned at the second place of clutch roller, separated with clutch power drives electrode, and position detecting circuit does not produce square-wave signal.
3, checkout gear according to claim 1 is characterized in that, wherein:
When ring gear was positioned at from mixing position to dehydration location, between the second place, with clutch power drives electrode closure, position detecting circuit produced square-wave signal to the clutch switch feedback electrode in the primary importance of clutch roller;
When ring gear was positioned at from dehydration location to mixing position, between the primary importance, with clutch power drives electrode closure, position detecting circuit produced square-wave signal to the clutch switch feedback electrode in the second place of clutch roller.
According to each described checkout gear of claim 1-3, it is characterized in that 4, primary importance is the narrow groove that is arranged on the clutch roller, the second place is the wide groove that is arranged on the clutch roller, and wherein the width of wide groove is the twice of narrow groove.
According to each described checkout gear of claim 1-3, it is characterized in that 5, position detecting circuit comprises clutch drive circuit and the clutch switch state-feedback circuit that is connected with MCU.
6, checkout gear according to claim 4 is characterized in that, position detecting circuit comprises clutch drive circuit and the clutch switch state-feedback circuit that is connected with MCU.
7, checkout gear according to claim 6 is characterized in that, the clutch drive circuit comprises the bidirectional triode thyristor SCR2 that is connected with MCU, and MCU rotates the clutch synchronization motor by driving bidirectional triode thyristor SCR2.
8, checkout gear according to claim 6 is characterized in that, the clutch switch state-feedback circuit comprise the optocoupler U12 that is connected with MCU and be connected optocoupler U12 and clutch power drives electrode between current-limiting resistance R101, R102, R103, R104.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100658275A CN100552119C (en) | 2008-03-14 | 2008-03-14 | A kind of tooth ring position detecting device for stirring type washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100658275A CN100552119C (en) | 2008-03-14 | 2008-03-14 | A kind of tooth ring position detecting device for stirring type washing machine |
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| Publication Number | Publication Date |
|---|---|
| CN101255645A CN101255645A (en) | 2008-09-03 |
| CN100552119C true CN100552119C (en) | 2009-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2008100658275A Expired - Fee Related CN100552119C (en) | 2008-03-14 | 2008-03-14 | A kind of tooth ring position detecting device for stirring type washing machine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101622600B1 (en) * | 2009-02-13 | 2016-05-20 | 엘지전자 주식회사 | Clutch of washing machine and washing machine having the same |
| JP5390480B2 (en) * | 2010-07-06 | 2014-01-15 | 株式会社東芝 | Combined washing machine |
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- 2008-03-14 CN CNB2008100658275A patent/CN100552119C/en not_active Expired - Fee Related
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