CN1268596A - Washing machine and device having rotating container - Google Patents
Washing machine and device having rotating container Download PDFInfo
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- CN1268596A CN1268596A CN00103582A CN00103582A CN1268596A CN 1268596 A CN1268596 A CN 1268596A CN 00103582 A CN00103582 A CN 00103582A CN 00103582 A CN00103582 A CN 00103582A CN 1268596 A CN1268596 A CN 1268596A
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- washing machine
- vibration
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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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/087—Water level measuring or regulating devices
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
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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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/02—Rotary receptacles, e.g. drums
- D06F37/12—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a vertical axis
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- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
A washing machine according to the present invention includes a pressure sensor provided at a rod holding plate holding a suspension rod with which an outer tub is suspended. The pressure sensor is constructed so that a coil is wound around a magnetostrictive element whose magnetic characteristic changes when it is expanded, compressed or twisted by an external force. The change in the magnetic characteristic is converted to the change in the inductance of the coil, and an oscillating signal of a frequency corresponding to the inductance generated. Based on the frequency of the signal, the load on the pressure sensor is detected. Before supplying water, the amount of the laundry contained in a wash-and-extraction tub is detected based on the output of the pressure sensor, and an object water level corresponding to the amount is determined. After that, a water supply valve is opened to start supplying water into the wash-and-extraction tub. The weight of water supplied is monitored based on the output of the pressure sensor, and the weight is converted to a water level. When the monitored water level has attained the object water level, the water supply is stopped.
Description
The invention that the invention relates to washing machine and have the device of rotary container.
Washing machine all needs to adopt detection to be contained in the load checkout gear of the washing weight in the Washing dewatering tub, detect the level sensor of water level in the Washing dewatering tub, and various sensors or the checkout gears such as vibration detection device that detect the abnormal vibrations that produces when the Washing dewatering tub dehydration is rotated under the inhomogeneous state of washings.
Existing load detection method, for example Japan Patent discloses patent gazette No. 206283/1988.Specifically, this method is after the motor that the pulsator of driving being located at the Washing dewatering tub bottom rotates is opened certain hour, closed, begin when closing counting, judge load according to the pulse signal numerical value that rotates until motor inertia when stopping with the pulse signal of the rotational synchronization of motor.Load is big more, and pulsator stops more early, and count value is just more little, and it is big therefore just can to judge load.But because its detected value can be because of the quality of washings, the state difference of cloth and change are so this precision of the load detection method that pulsator rotates of utilizing is difficult to improve.In addition, because pulsator can very strong friction take place with washings, therefore damage washings easily.
In addition, the someone proposed not infer indirectly load, but utilized weight sensor the washings that is contained in washtub directly to be carried out the method for check weighing.For example, the applicant discloses in No. 84382/1993 communique at Japan Patent and discloses a kind of washing machine, on the hanging stick of its suspension washtub the weight sensor that is made of spring, coil, iron core etc. is housed.In this structure, hanging stick moves up and down because of the load that hangs changes, and makes the fixing interior core length of coil in insertion position change, thereby the inductance of coil is changed.
But, this set the washing machine of weight sensor, except be arranged at absorb the Washing dewatering tub vibration outside the disc spring between bucket and the hanging stick, the spring of weight sensor is set in addition, therefore for certain specific hanging stick two kinds of disc springs will be set, it is very complicated that the damping design just becomes.In addition, because the used spring of weight sensor has its intrinsic frequency, the situation that may cause weight sensor itself that the vibration of outer bucket is amplified sometimes.And the shape of this weight sensor is bigger, to occupy bigger space in the casing of washing machine, is an impediment to the miniaturization and the capacity that increases washing machine of washing machine profile.In addition, its accuracy of detection also can reduce with timeliness such as the deterioration variation of spring.
In addition, also has following problem.Above-mentioned weight sensor, though from its structure, should detect the washing weight of being adorned in the Washing dewatering tub, and can also detect supply and store the weight of barrel interior water outside.But, at most just several kilograms of load, and the weight of the water that stores can be up to it more than 10 times.Therefore, in order to want to measure the weight of water, the structure of above-mentioned weight sensor must be able to guarantee that it has very big detection range, and so, the accuracy of detection of load is just very low.Conversely, can guarantee the accuracy of detection of load, then can not cover the detection range of the weight of water again as the structure of above-mentioned weight sensor.So even if adopted above-mentioned weight sensor, it is inconvenient wanting the weight of the load of washings and water is all measured.
The present invention finishes in order to solve above-mentioned problem, and its main purpose provides a kind of washing machine with load sensor rotation, compact high precision that can not influence damping design and Washing dewatering tub.Another object of the present invention is that this load sensor not only can the detection load amount, and can be used for detecting the weight of water, has the function of level sensor concurrently.A further object of the invention provide a kind of have can accurately measure when dehydration Washing dewatering tub or the washing machine of the sensor of the vibration of outer bucket.
In order to solve above-mentioned problem, washing machine of the present invention has adopted to utilize and has been subjected to external force to do the time spent, the pressure sensor that the magnetostriction element that its magnetic characteristic can change with the speed or the size of external force is made.This pressure sensor just has open in No. 105834/1989 microfilm communique of Japanese Utility Model patent disclosure.
Specifically, washing machine of the present invention is a kind of casing that constitutes profile that has, hang and be supported on the outer bucket of casing inside, and the washing machine that is arranged at the inner Washing dewatering tub of this outer bucket rotationally, it is characterized in that having the magnetostriction element of the site of action of the external force that the weight that is arranged at the load that is contained in the washings in the Washing dewatering tub and the water of being supplied with produces, and be arranged near this magnetostriction element, can detect the magnetic property change of this magnetostriction element that above-mentioned external force causes, the pressure sensor that contains coil, measure the determinator of the weight of above-mentioned load and water according to the output of the coil of this pressure sensor, and before water supply, obtain load by the said determination device, according to the definite water yield that should supply of this load, when supplying water, measure the weight of water by the said determination device, the operation controller that supplies water according to the above-mentioned water yield.
Above-mentioned pressure sensor has small-sized, light weight, and the big characteristics of detection range.So what position that is contained in the washing machine does not account for very big space, can not be an impediment to the miniaturization and the high capacity of washing machine.Because do not adopt the movable member of spring and so on, itself can not constitute the reason that rotates, and can not cause the reduction of accuracy of detection because of the timeliness deterioration of movable member yet.
In addition, above-mentioned pressure sensor has and can detect external force (external load) within a large range, and the characteristics that external force is more little, the sensitivity of its detection is high more.Therefore, be specially adapted to needs with the weight of same pressure sensor detection load amount and water.Specifically, adopt said structure, can before water supply, carry out high-precision mensuration by determinator to load earlier, when adding the weight of the water more much bigger, accurately measure this bigger weight again than this load.Because the weight of water can be converted into the water level in the outer bucket, so above-mentioned pressure sensor and determinator not only have the load measuring ability, but also has the water level detecting function, can existingly contain the level sensor of pressure hose.
By above-mentioned pressure sensor being arranged on the external force that weight produced that is subjected to load and water, can being subjected to the eccentric load that produced because of the washings one-sided that is contained in the Washing dewatering tub simultaneously again or the position of the external force that vibration produced that takes place because of this eccentric load, determinator just not only can be measured the weight of load and water according to the output of the coil of this pressure sensor, but also the vibration that can measure eccentric load or take place because of this eccentric load.
In addition, determinator also can only be measured eccentric load and vibration according to the output of the coil of pressure sensor.
An embodiment as the determinator of washing machine of the present invention, can measure the magnetic property change of magnetostriction element with the mode that the inductance of measuring coil changes, specifically, for example, can change the frequency of oscillation of the LC oscillator that contains coil and measure.Like this, inductance is being changed under the situation about detecting, inductance is that the number of turns changes with the number of turns associated of coil, and the variation inductance amount also can change.So, if possess some different, interchangeable coils, just can obtain suitable detection sensitivity to different detected objects.Specifically, under the situation that the same pressure sensor of above-mentioned usefulness detects the weight of load and water, can carry out highly sensitive detection to load, just low to the detection sensitivity of the weight of water.
In washing machine of the present invention, pressure sensor can be arranged at each position in the washing machine, for example can be arranged on the hanging stick support that is supporting the hanging stick that hangs the outer bucket of adorning Washing dewatering tub in the inside, perhaps also can be arranged on this washing machine is supported on the support foot on ground.These positions are because be the part that directly is subjected to the external force effect that the weight etc. of load or water produces, so be specially adapted to the occasion of the weight of detection load amount or water.
Owing to a plurality of hanging stick supports are arranged in the ordinary course of things, therefore can on these a plurality of hanging stick supports, pressure sensor be set respectively all.Because a plurality of hanging stick supports make load be disperseed supporting, therefore, load onto pressure sensor all and just can obtain load by the value of measuring, obtain very high accuracy of detection.
In addition, also can on these a plurality of hanging stick supports pressure sensor be set respectively all, but at a place pressure sensor be set at least, the detected value of measuring by this pressure sensor is inferred weight, eccentric load or the vibration of load, water.As adopt this structure, because the number of pressure sensor has reduced, so cost can reduce.Adopt this structure,,, infer weight, eccentric load or the vibration of load, water again according to this detected value Yi Bian detect several times by pressure sensor Yi Bian preferably allow the Washing dewatering tub low speed rotation.As adopt this structure, and even all do not establish pressure sensor, also can eliminate the influence of loads such as the distribution biasing of washings at each hanging stick support, obtain very high accuracy of detection.
Washing machine of the present invention when only eccentric load or vibration being detected, produces the bigger position of vibration when preferably above-mentioned pressure sensor being arranged on washing, rinsing or dehydration.Specifically, for example this pressure sensor can be contained on this casing, shell vibration is converted to external force like this, is measured by above-mentioned pressure sensor.
In addition, washing machine of the present invention is again a kind of casing that constitutes profile that has, hang on the outer bucket of casing inside, and the washing machine that is arranged at the inner Washing dewatering tub of this outer bucket rotationally, it has the magnetostriction element of the site of action that is arranged at the external force that vibration produced that is suspended on the load on outer barrel and is somebody's turn to do outer bucket generation, and be arranged near this magnetostriction element, can detect the magnetic property change of this magnetostriction element that above-mentioned external force causes, the pressure sensor that contains coil is measured the determinator of above-mentioned load and vibration according to the output of the coil of this pressure sensor.
The structure of this determinator can and be obtained between the vibration measurement mode of above-mentioned vibration it in the gravimetry mode of measuring above-mentioned load to switch.This structure as long as for example can when Washing dewatering tub rotates determinator be set at the vibration measurement mode, can switch to determinator the gravimetry mode again and just can when Washing dewatering tub stops.By adopting such structure, when Washing dewatering tub rotates, be set at and rotate the mensuration mode, unusual rotation is measured, when Washing dewatering tub stops, particularly when the washing beginning, be set at the gravimetry mode, load is measured.
Judge when the structure of above-mentioned washing machine can surpass certain limiting value in the magnitude of vibrations that the said determination device is measured and rotate unusually.Specifically, because washings biasing etc. are when making the Washing dewatering tub eccentric rotary, its eccentric degree is big more, and the rotation that determinator is measured is also just big more.Like this, just, can measure and rotate unusually.
Also have, in this structure, preferably the load size of measuring according to the said determination device is set above-mentioned certain limiting value.That is to say,,, can reduce the difference of judging eccentric degree when rotation is unusual by setting limiting value according to the load that acts on Washing dewatering tub because the magnitude of vibrations that determinator is measured under the identical situation of eccentric degree, changes with load.
The structure of above-mentioned determinator can have the load that acts on above-mentioned outer bucket and vibrate the weight vibration measurement mode of measuring simultaneously.In this structure, at first the load size of measuring according to determinator is set certain limiting value, judges when the magnitude of vibrations of measuring at this determinator has surpassed this certain limiting value and rotates unusually.Adopt such structure,,, set the limiting value of rotating abnormality detection so the time that can not be subjected to is gone up the influence of load change owing to can measure the load size and the magnitude of vibrations that becomes rotation abnormality detection object of decision limiting value simultaneously.
Specifically, outer bucket by a plurality of means of hanger rods, and an end of pressure sensor is carried on the hanging stick side supporting part of being located at this hanging stick end, and the other end is carried on the casing side supporting part that is arranged on the casing.The hanging stick that pressure sensor is being set in a plurality of hanging sticks can have the side-prominent projection of outside bucket.Adopt such structure, when washings biasing made the Washing dewatering tub eccentric rotary, the run-off the straight of outer bucket bumped with the projection of hanging stick.The impact that collision produces is passed to pressure sensor by hanging stick, rotates unusually thereby measure.If, do the outer bucket outer peripheral face and the thickness of projection collision part thicker than the other parts of outer bucket outer peripheral face, then can reduce outer bucket distortion and deterioration that outer bucket causes with the projection collision of hanging stick.
In addition, the vibration that the structure of washing machine of the present invention can be measured in washing process or rinse cycle at pressure sensor surpasses when a certain amount of, makes the pulsator rotating speed slack-off, and current are died down.Adopt such structure, when reducing vibration, can prevent sealing be splashed to washing machine around.The vibration of measuring in dehydration at pressure sensor surpasses when a certain amount of, the unbalance correction running that can allow washings in the Washing dewatering tub reappose.Adopt such structure, abnormal vibrations or abnormal sound take place in the time of can preventing to dewater effectively.
The present invention can also be widely used in others except washing machine.That is to say, so long as have the same with washing machine, can be around the container of the rotation of vertical axis or horizontal rotational shaft, object is contained in this container, the device that this container is rotated, the position of the external force effect that vibration produced that takes place at load that this container carried or when rotating, the pressure sensor that utilizes magnetostriction element is set, and is application of the present invention.Specifically, as apply the present invention to have the drying machine etc. of going barrel, just in the washing weight that can in measuring drum, be adorned, measure the vibration when turning round.
Below, the some embodiment to washing machine of the present invention describe with reference to accompanying drawing.
Fig. 1 is the longitudinal section of an example of the used pressure sensor of expression washing machine of the present invention.
Fig. 2 is the outer curve map that is added on external load size and the inductance relation of pressure sensor of expression.
Fig. 3 is the side cross-sectional views of the washing machine structure of expression embodiment 1.
Fig. 4 be embodiment 1 washing machine want the electrical system architecture figure of portion.
Fig. 5 is that the washing machine of expression embodiment 1 begins to washing process action of starting flow chart from washing.
Fig. 6 be embodiment 3 washing machine want the electrical system architecture figure of portion.
Fig. 7 is the side cross-sectional views of the washing machine structure of expression embodiment 2.
Fig. 8 is the enlarged drawing of the A portion among Fig. 7.
Fig. 9 is that the washing machine of expression embodiment 3 begins to washing process action of starting flow chart from washing.
Figure 10 is the action flow chart of dehydration of the washing machine of expression embodiment 3.
Figure 11 be embodiment 4 washing machine want the electrical system architecture figure of portion.
Figure 12 be embodiment 5 washing machine want the electrical system architecture figure of portion.
Figure 13 is the side cross-sectional views of the washing machine structure of expression embodiment 5.
Figure 14 is that the washing machine of hanging stick that expression has the projection of establishing has in Washing dewatering tub and passes to the curve map that voltage value changes when dewatering action under the eccentric load state.
Figure 15 is that the washing machine of representing not establish the hanging stick of projection has in Washing dewatering tub and passes to the curve map that voltage value changes when dewatering action under the eccentric load state.
Figure 16 is the side cross-sectional views of the washing machine structure of expression embodiment 7.
Figure 17 is the enlarged drawing of the B portion among Figure 16.
Figure 18 is the action flow chart that the washing of the washing machine of expression embodiment 7 is turned round.
Figure 19 is the action flow chart of dehydration of the washing machine of expression embodiment 7.
At first, with reference to Fig. 1 and Fig. 2 the used pressure sensor of washing machine of the present invention is described.
Fig. 1 is the longitudinal section of an example of this pressure sensor of expression.Pressure sensor 1 has the iron core 2 that cylindrical mangneto telescopic element constitutes, be arranged on the bobbin 6 of 2 outer peripheral faces unshakable in one's determination, coil 3 along bobbin 6 windings, be arranged at above the bobbin 6 and following caoutchouc elasticity ring 7,8, what surround coil 3 has a round-ended cylinder shape case 4, and contact closely with an end face of unshakable in one's determination 2, from the outstanding compression zone 5 of the open end of case 4.Compression zone 5 one side is outwardly promptly born the face of external load and is made sphere shape, and like this, when a point was subjected to external load, whole unshakable in one's determination 2 end face just was subjected to same load action.
The magnetostriction element that constitutes iron core 2 is when external loads such as the compression that is subjected to machinery, elongation, distortion, the element that its magnetic characteristic can change according to the speed or the size of this power.In other words, pressure sensor 1, for example shown in Figure 1, when compression zone 5 was subjected to external load, unshakable in one's determination 2 upper end was under pressure by compression zone 5, and the self-inductance of coil 3 just changes with this deformation.Fig. 2 is the curve map of an example of external load size and the inductance relation on the expression pressure sensor.As can be seen from Figure 2, this pressure sensor 1 has such characteristic: the field that outer load is more little, and for the variable quantity of same external load, its variation inductance amount is big more, that is to say, and the sensitivity of its detection is high more.For same magnetostriction element, the number of turns of coil is many more, and inductance is big more, therefore represents that the curves of its characteristic is also big more.
Washing machine to first embodiment (calling " embodiment 1 " in the following text) of adopts pressure sensor 1 is elaborated below.Fig. 3 is the side cross-sectional views of the washing machine structure of expression embodiment 1.In the inside of the casing 10 of washing machine, outer bucket 11 is being hung by four (only seeing two among Fig. 3) hanging sticks 12, the inside of bucket 11 outside, and the Washing dewatering tub 13 that its perisporium has many dewatering holes can be that the center is being supported by axle rotatably with main shaft 15.Bottom at Washing dewatering tub 13, be provided with the pulsator 14 that the agitator treating thing is used, the rotary power that is contained in the motor 16 below outer barrel 11 is by motor belt pulley 17, V belt 18, main pulley 19, and switchover apparatus 20 passes to Washing dewatering tub 13 and pulsator 14.
Mounting structure to hanging stick 12 is described in more detail below, and the installation sheet 21 of the bucket 11 diapires outside that extends is run through in the bottom of hanging stick 12, and its front end is provided with the vibration absorber 22 with compression disc spring.The upper end of this disc spring is fixed on the installation sheet 21, and when the load of outer bucket 11 put on vibration absorber 22 by installation sheet 21, disc spring was flexible, absorbed the vibration of outer bucket 11.On the other hand, the upper end of hanging stick 12 can remain on the hanging stick metal carrier 24 that is fixed in from the installation sheet 23 that casing inwardly stretches out up or down, on this hanging stick metal carrier 24, pressure sensor 1 is being set.A pressure sensor 1 respectively is housed supporting respectively on each hanging stick metal carrier 24 of four hanging sticks 12.Because the load of outer bucket 11 is dispersed to each hanging stick metal carrier 24, therefore the external load that is subjected to of four pressure sensors 1 is respectively this dispersed load.
Fig. 4 be this washing machine want the electrical system architecture figure of portion.Comprised CPU etc. in the structure of control part 30, it accepts the operation signal from operating portion 33, and action, the feed water valve 34 of motor 16 are controlled with the on-off action of draining valve 35.The coil 3 that is arranged on four pressure sensors 1 on each hanging stick metal carrier 24 is connected with separately LC oscillator 31 (only having represented a system among Fig. 4) respectively, and the resonance of the capacitor of not expressing among the inductance L 1 of LC oscillator 31 by coil 3 and the figure etc. produces frequency and inductance L 1 is vibrated accordingly.Frequency detecting portion 32 measures the frequency of this vibration, with this testing result input control part 30.Like this, the detection signal with the corresponding four systems of inductance of the coil 3 of each pressure sensor 1 is transfused to control part 30.30 pairs of detection signals that obtain from four frequency detecting portions 32 of control part carry out addition process or other processing, as hereinafter described, calculate the weight of load, water and eccentric load etc.Specifically, when measuring the weight of load or water, each detected value is carried out addition process.Like this, as long as when measuring the weight of load or water, can be by coil 3 series connection with four pressure sensors 1, with the inductance addition of four coils 3, produce frequency and add the inductance that with a unique LC oscillator and vibrate accordingly.
Fig. 5 is the flow chart of the control action of this washing machine of expression.Below, along Fig. 5, the washing machine of present embodiment is begun to describe to the washing process action of starting from washing.
The user drops into Washing dewatering tub 13 with washings, and by operating portion 33 indication washing beginnings, control part 30 at first carries out the detection of load and handles (step S1).That is to say, after washings is dropped into Washing dewatering tub 13, increased the weight of washings in the weight that is hung on the hanging stick 12, the compression zone 5 suffered external loads of pressure sensor 1 have increased.So, inductance L 1 changes, and the frequency of oscillation of LC oscillator 31 changes.Control part 30 is read this frequency of oscillation from frequency detecting portion 32, and reference example is calculated load as the table of comparisons of expression frequency and load relation.This table of comparisons can draw in advance by experiment, exists in the memory.
As mentioned above, this washing machine carries out the detection of water level, so the level sensor that does not need existing general washing machine to adorn owing in pressure sensor 1 detection load amount, the water yield is converted into weight.
The common maximum of the load of washings is only about the 7-8 kilogram, but when water level was very high, the water yield can reach several decaliters, so the weight of water can reach tens kilograms at most, substantially exceeds load, and its necessary detection range is also very big.Can be slightly to the accuracy of detection of the weight of water, the accuracy of detection of load is then required to reach high accuracy about the 0.5-1.0 kilogram.As shown in Figure 2, this pressure sensor 1 has the high more characteristic of more little its detection sensitivity of external load.In other words, when the detection load amount, very high sensitivity can be arranged, and when sensed water level, its sensitivity is lower, so just in time meet above-mentioned requirement, this pressure sensor 1 is fit to be used for detection load amount and water level very much.
As carrying out the detection of the weight of load and water with above-mentioned structure, it is big that LC oscillator 31 frequency ranges become, and it is complicated that the circuit that frequency detecting is used just might become.Conversely, diminish as making frequency range, then detection sensitivity might reduce, required high sensitivity in the time of particularly may being difficult to guarantee the detection load amount.But, adopt following way, just can when guaranteeing enough sensitivity, frequency range be diminished.Specifically, as shown in Figure 2, inductance is with the number of turns associated of coil.Therefore, around the magnetostriction element 2 of pressure sensor 1, twine two kinds of different (or more kinds of) coils of the number of turns respectively, as required, the number of turns of conversion coil when allowing LC oscillator 31 vibrations.As mentioned above, the necessary detection range that will compare load to the necessary detection range of the weight of water is much bigger, in the external load field that the weight to water detects, by reducing the number of turns of coil, can be so that the inductance variable quantity of same external load variable quantity be diminished, even to very big external load scope, the variation inductance scope also can diminish relatively.In this case, detection sensitivity has reduced, but because low a bit it doesn't matter to the accuracy of detection of the weight of water, so can not cause any problem.On the other hand, in the external load field that load is detected, can guarantee the higher detection precision by the number of turns that increases coil.The instantiation of the method for handover control of coil describes among the embodiment 3 below.
Eccentric load or vibration when the washing machine of the foregoing description 1 can also utilize pressure sensor 1 to detect the dehydration running.As before dehydration, the washings that is contained in the Washing dewatering tub 13 is not distributed in around the rotating shaft equably, and then four pressure sensors 1 are subjected to uneven external load.Therefore, as long as for example calculate the poor of maximum weight and minimum weight in the wet washing thing weight that four pressure sensors 1 measure, reach certain value when above in this difference, just it is bigger to judge eccentric load.In this case,, outwards inject an amount of water in the bucket 11, allow pulsator 14 rotate for imbalance is revised.Washings is scattered, and distribution changes, and then eccentric load is judged.
In addition, even before dehydration, eccentric load is less, but when Washing dewatering tub rotated at a high speed, along with the carrying out of dehydration, eccentric load may become greatly, produced vibration.As vibrating excessively, outer bucket 11 bumps with the inwall of casing 10, can produce abnormal sound, is subjected to unusual load on the main shaft 15 and then may causes fault.So, after dehydration running, similarly can calculate detected value poor of four pressure sensors 1, reach certain value when above in this difference, judge and produced abnormal vibrations.
Washing machine to second embodiment of the present invention (calling " embodiment 2 " in the following text) describes below.Fig. 7 is the side cross-sectional views of the washing machine structure of expression embodiment 2.Fig. 8 is the enlarged drawing of the A portion among Fig. 7.The pressure sensor of the washing machine of the foregoing description 1 is contained on four hanging stick metal carriers, and the pressure sensor of the washing machine of present embodiment 2 is to be contained on four jiaos of set legs 25 in bottom surface of casing 10.For the vibration transfer that prevents casing 10 to ground, elastomers such as leg 25 usefulness rubber are made, pressure sensor 1 is embedded in the leg 25, its hemispheric compression zone 5 downward (to landing ground).Because four legs 25 disperse to have supported whole loads of washing machine, so 4 pressure sensors 1 are subjected to corresponding therewith external load.Like this, the difference of the washing machine of it and embodiment 1 only has been whether to comprise in its load the load beyond the hanging stick bearing part, it can be the same with above-mentioned explanation, and the eccentric load when carrying out load detection, water level detecting, dehydration detects and vibration detection.
Washing machine to the 3rd embodiment of the present invention (calling " embodiment 3 " in the following text) describes below.The washing machine of embodiment 1 because all adorning pressure sensor 1 on each hanging stick metal carrier 24, must have four sensors.The washing machine of present embodiment 3 only is provided with pressure sensor 1 on therein the hanging stick metal carrier 24, measures the weight of load or water with the detected value of this pressure sensor 1.
Fig. 6 be embodiment 3 washing machine want the electrical system architecture figure of portion.In order to make accuracy of detection can do aforesaid variation, the coil 3 of the pressure sensor 1 of this washing machine is divided into two coils of each 300 circle, when change-over switch 36 is swung to a side, two coil series connection, become the coil of 600 circles, only use a coil when swinging to the b side, become the coil of 300 circles.As shown in Figure 2, the number of turns of coil after a little while, the variation inductance amount is totally less, detection sensitivity is suppressed.
Fig. 9 is that the washing machine of expression embodiment 3 begins to washing process action of starting flow chart from washing.Begin when running washing obtaining indication, control part 30 makes change-over switch 36 swing to a side, allows the number of turns of coil 3 of pressure sensor 1 become 600 circles (step S11).Then, CD-ROM drive motor 16 rotates, and makes Washing dewatering tub 13 rotate (step S12) with the speed that per minute 30 changes.Like this, Washing dewatering tub turns around for 13 about 2 seconds.Control part 30 per 0.5 second, be 90 ° of Washing dewatering tub 13 about revolutions, just read 4 secondary frequencies, obtain the mean value (step S13) of these 4 detected values from frequency detecting portion 32.Then, according to this mean value, judge load (step S14).
Determine water level and current (step S15) according to this load, make change-over switch 36 swing to the b side, make the number of turns of the coil 3 of pressure sensor 1 become 300 circles (step S16).Like this, as mentioned above, the detection sensitivity of pressure sensor 1 descends.Then, by with Fig. 5 in the processing of the same step S17-S19 of step S3-S5, supply water until reaching water level, begin the washing running.Like this, when Washing dewatering tub 13 rotates, obtain the detected value of pressure sensor 1,, correctly carry out weight detecting by the weight of load or water being judged the influence that just can alleviate the washings biasing with a pressure sensor 1 according to its mean value.
Figure 10 is the control flow chart of dehydration of the washing machine of this embodiment 3.Finish in washing and rinsing, when beginning to dewater, control part 30 makes change-over switch 36 swing to a side, makes the number of turns of the coil 3 of pressure sensor 1 become 600 circles (step S21).Then, CD-ROM drive motor 16 rotates, and makes Washing dewatering tub 13 rotate (step S22) with the speed that per minute 60 changes.Like this, Washing dewatering tub turns around for 13 about 1 seconds.Control part 30 per 0.1 second, be 36 ° of Washing dewatering tub 13 about revolutions, just read 10 secondary frequencies, obtain the maximum fmax and the minimum of a value fmin (step S23) of these 10 detected values from frequency detecting portion 32.Then, calculate the poor of maximum fmax and minimum of a value fmin, judge whether this difference surpasses first certain value (step S24).The eccentric load that the washings biasing causes is big more, the change of the detected value of pressure sensor 1 is also big more in during Washing dewatering tub 13 rotations one circle, therefore surpassed first certain value as the difference among the above-mentioned step S24, just it is big unusually to judge eccentric load, carries out unbalance correction running (step S29).
Difference as maximum fmax among the above-mentioned step S24 and minimum of a value fmin does not surpass first certain value, and then control part 30 further improves the rotating speed (step S25) of Washing dewatering tub 13.Correspond to this rotating speed, Washing dewatering tub 13 whenever turns around (being 90 ° of about revolutions), just reads 4 secondary frequencies from frequency detecting portion 32, obtains the maximum fmax and the minimum of a value fmin (step S26) of these 4 detected values.Because the rotating speed of Washing dewatering tub 13 rises gradually, therefore, to be controlled to be shorter and shorter at interval the readout time of correspondent frequency therewith.Then, calculate the poor of this maximum fmax and minimum of a value fmin, judge whether this difference surpasses the 2nd certain value (step S27).In the process that the rotating speed of Washing dewatering tub 13 rises, vibration as outer bucket 11 becomes big, the change that Washing dewatering tub 13 rotates the detected value of the pressure sensor 1 during the circle also becomes big, therefore surpassed the 2nd certain value as the difference among the step S27, just it is very big to judge vibration, carries out unbalance correction running (step S29).Difference as maximum fmax among the above-mentioned step S24 and minimum of a value fmin does not surpass first certain value, then judge fixed dewatering time whether finish (step S28), before dewatering time finishes, return step S26, finish, then stop dehydration (step S30) as dewatering time.
Unbalance correction running is such as already explained, in order to allow washings disperse to hold successfully to reappose, can temporarily stop the rotation of Washing dewatering tub 13, injects an amount of water outside in the bucket, allows pulsator 14 rotate again.Certainly, as long as washings is reapposed, adopt other method also to be fine.Like this, even only use a pressure sensor 1, also can measure because of washings biasing and cause eccentric load or vibration.
Washing machine to the 4th embodiment of the present invention (calling " embodiment 4 " in the following text) describes below, its structure the same shown in above-mentioned embodiment 1, only on a hanging stick metal carrier 24, adorning pressure sensor 1, but coming detection load amount, water level different with the testing circuit of vibration with this pressure sensor 1.
Figure 11 be embodiment 4 washing machine want the electrical system architecture figure of portion.In this embodiment 4, testing circuit comprises dc source 41, be connected the excitation chain 42 and constant-current circuit 43 of the output of this dc source 41, optionally switch the change-over switch 44 of the electric current of supplying with the coil 3 that is wrapped in 2 outer peripheral faces unshakable in one's determination, be connected the current detection circuit 45 and amplitude detecting circuit 47 of the output of coil 3, and the change-over switch 48 of optionally switching the signal of supplying with microcomputer 40.The rotating speed of motor 16 is transfused to microcomputer 40, according to this rotating speed control change-over switch 44,48.That is to say that when microcomputer 40 stopped operating at motor 16, the upside with change-over switch 44,48 switches among Figure 11 was set at the weight detecting mode, when motor 16 rotated, the downside with change-over switch 44,48 switches among Figure 11 was set at the vibration detection mode.
In the weight detecting mode, the DC voltage of dc source 41 output by excitation chain 42 press fixed cycle switch, form square wave.This square wave is by the coil 3 of change-over switch 44 supply pressure sensors 1.At this moment, because of washings is dropped into Washing dewatering tub 13 etc., unshakable in one's determination 2 are compressed power, and unshakable in one's determination 2 permeability changes with the size of this compression stress, and the inductance of coil 3 changes.Consequently the size of current of coil 3 supply current detection circuits 45 changes, and this variation is measured by current detection circuit 45.The structure of current detection circuit 45 makes its energy according to the big or small output voltage of measuring electric current, and this voltage is by low-frequency filter 46 input microcomputers 40.Microcomputer 40 is judged load according to this voltage value, supplies water for outer bucket 11 according to the water yield that load is determined.
On the other hand, in the vibration detection mode, the electric current of dc source 41 outputs becomes certain DC current by constant-current circuit 43.This DC current is supplied with coil 3 by change-over switch 44, gives unshakable in one's determination 2 certain magnetic fields.At this moment, produce vibration as Washing dewatering tub 13, the same with the weight detecting mode, unshakable in one's determination 2 permeability changes, and the interlinkage flux of coil 3 changes, and produces induced-current.This induced voltage V is as shown in the formula shown in (1), and is proportional with the compression stress that acts on unshakable in one's determination 2 because of vibration, and it is big that time to time change becomes, and that is to say that the frequency of vibration is high more, and the amplitude of induced voltage is big more.
V＝-N·(dΦ/dt) ……(1)
Wherein, N is the number of turns of coil
This amplitude is supplied with microcomputer 40 by amplitude detecting circuit 47 detections as analog voltage.In microcomputer 40, this analog voltage carries out the A/D conversion, judges according to the digital value that is transformed into to have or not the rotation that produces because of biasing unusual.That is to say that microcomputer 40 compares this digital value and predefined limiting value, when surpassing this limiting value, it is unusual just to judge the rotation that produces because of biasing, to the rotation of motor 16 control that stops or slowing down.As the limiting value of criterion, be to drop into the value that the load of the washings of Washing dewatering tub 13 is set according to when beginning washing, the load that washings acts on outer bucket 11 is big more, and the value of setting is also big more.That is to say that even same vibration (identical acceleration change), as long as the load that the washings of outer bucket 11 and Washing dewatering tub 13 and input is added up changes, it is big that the variation of the power that pressure sensor 1 is measured just becomes.Conversely, under the less situation of load, judge that the limiting value of abnormal vibrations will be set smallerly.Therefore, set limiting value according to load and just can measure rotation accurately unusually.Like this, just, can prevent because of rotating unusual damage or the fault that causes the washing machine each several part.
The weight detecting mode and the vibration detection mode of the foregoing description 4 have the structure of switching according to the rotation of motor 16, and present embodiment 5 has the testing circuit that simultaneously load and vibration is detected.Figure 12 be present embodiment 5 washing machine want the electrical system architecture figure of portion.This testing circuit has dc source 51, be connected the excitation chain 52 of the output of this dc source 51, be connected the current detection circuit 53 of output of the coil 3 of pressure sensor 1, second low-frequency filter 55 that first low-frequency filter 54 that weight detecting is used and vibration detection are used, and be connected the output of this second low-frequency filter 55 and the comparator 56 of the reference signal usefulness lead-out terminal ref of microcomputer 50.Correspond to the frequency of oscillation 10kHz of excitation chain 52, the frequency that opens circuit of first low-frequency filter 54 is 100Hz, and the frequency that opens circuit of second low-frequency filter 55 is 1kHz.
From the DC voltage of dc source 51 outputs,, form and carry out ripple, the coil 3 of supply pressure sensor 1 with the hunting of frequency of 10kHz.At this moment, no matter Washing dewatering tub 13 is in rotary state or halted state, the inductance of coil 3 all changes with the compression stress that acts on unshakable in one's determination 2.Consequently, the size of current that coil 3 is supplied with current detection circuit 53 changes, and this variation is measured by current detection circuit 53.The voltage of these current detection circuit 53 outputs is to determine according to the size of measuring electric current, and this voltage is by the A/D input terminal of first low-frequency filter, 54 input microcomputers 50.In microcomputer 50, this voltage carried out the A/D conversion after, detect acting on unshakable in one's determination 2 load, this load is used to judge the output to outer bucket 11.That is to say that according to load, be that load is set the necessary water yield, water supply start is measured the water yield according to the load that acts on outer bucket 11 then,, stop to supply water when the water yield reaches when setting the water yield.
In addition, in microcomputer 50, generate reference signal according to the load of measuring, this signal supplies to an input terminal of comparator 56 from lead-out terminal ref.This reference signal is set at 1.5 times of corresponding voltage values of load with load.The output of current detection circuit 53 supplies to another input terminal of comparator 56 by second low-frequency filter 55, compares with the reference signal of microcomputer 50.Consequently, when the output waveform of second low-frequency filter 55 surpassed the amplitude of reference signal, this output was transfused to microcomputer 50 and counts.As this count value fixed during in surpassed predefined limiting value, just microcomputer 50 judge rotate unusual, to the rotation of motor 16 control that stops or slowing down.Like this, just, can prevent to cause unusually the damage or the fault of washing machine each several part because of the eccentric rotation that produces.
Adopt the washing machine of this embodiment 5, can whether rotate regardless of Washing dewatering tub 13, simultaneously detection effect is in the load and the vibration of outer bucket 11, though therefore in the dehydration along with the changing of time through load, the rotation that also can measure Washing dewatering tub 13 rightly is unusual.Because bucket 11 load outside in the rotation of Washing dewatering tub 13, also can measuring, so the dewatering state of the washings in the Washing dewatering tub 13 can judge dehydration according to the change of this load the time.In this case, owing to can control the rotation of Washing dewatering tub 13, therefore can carry out appropriate dehydration control according to the situation that spues of water in the washings.
The the above-mentioned the 4th and the 5th embodiment is that to measure the rotation that Washing dewatering tub 13 off-centre cause according to the magnitude of vibrations that outer bucket 11 is delivered to pressure sensor 1 by vibration absorber 22 unusual, and present embodiment 6 (calling " embodiment 6 " in the following text) is to change according to the load that the collision with outer bucket 11 and hanging stick 12 produces that to measure the rotation that Washing dewatering tub 13 off-centre cause unusual.The hanging stick 12 of the washing machine of embodiment 6 as shown in figure 13, has the projection 26 that outside bucket 11 is given prominence to.This projection 26 and outer barrel of length of colliding are set by the also little angle of inclination, angle of inclination of minimum in the angle of inclination that tilts, collides casing 10 than bucket outside causing because of Washing dewatering tub 13 off-centre 11.Adopt such structure, under the situation that bucket 11 tilts outside causing because of Washing dewatering tub 13 off-centre, outer bucket 11 and projection 26 collisions, the impact that this collision produces is passed to hanging stick 12, is passed to pressure sensor 1, and the size of compression stress is changed.
Adopt the such structure that projection 26 is set of present embodiment on hanging stick 12, in Washing dewatering tub 13, adorning the action of dewatering under 1 kilogram the state of weight prejudicially, that is to say to make Washing dewatering tub 13 at a high speed under the situation of rotation, as shown in figure 14, produced the amplitude of the most about 1.0V.And employing is provided with the structure of projection 26 on hanging stick 12, equally adorning the action of dewatering under 1 kilogram the state of weight prejudicially, then as shown in figure 15, can only produce the amplitude of the most about 0.35V, its vibration is bigger significantly than the situation that is provided with projection 26.Like this owing to can distinguish the vibration that produces in the vibration that produces in the normal rotation and unusual the rotation clearly, so can more positively measure rotate unusual.In this embodiment 6, outer bucket 11 is thicker than other parts with the thickness of slab of the part of projection 26 collisions of hanging stick 12, has constituted heavy section 27.Like this, because improved the intensity of outer bucket 11, therefore can reduce outer bucket 11 because of being out of shape and deterioration with projection 26 collisions of hanging stick 12.
In the foregoing description 4-6, only in four jiaos of hanging sticks 12 that are provided with of casing 10 pressure sensor 1 is set, but also can on two hanging sticks on the diagonal, pressure sensor 1 be set.In addition, can also be the same with embodiment 1, on four hanging sticks 12, pressure sensor 1 is set all.Also have, pressure sensor 1 is arranged between hanging stick 12 and the casing 10, but pressure sensor 1 also can be arranged between hanging stick 12 and the outer bucket 11.
Washing machine to the seventh embodiment of the present invention (calling " embodiment 7 " in the following text) describes below.The washing machine of present embodiment 7 is 1 embodiment that are used for detecting eccentric load or abnormal vibrations of pressure sensor.Figure 16 is the side cross-sectional views of this washing machine structure of expression, and Figure 17 is the enlarged drawing of the B portion among the figure.The electrical system architecture of the washing machine of present embodiment 7 is because of the same with Fig. 4 or Fig. 6, so omit no longer explanation.
Figure 18 is the control flow chart in washing when running of the washing machine of expression present embodiment 7.After the washing running beginning, pulsator 14 is driven the rotational speed (step S41) fixed by, produce current in the Washing dewatering tub 13, washings is doing to enter vertical direction again when horizontal direction is rotated along with current, fixed wash time do not finish before (step S42 " Y " before), control part 30 is obtained the amplitude of fluctuation of the detection frequency of frequency detecting portion 32, when this amplitude of fluctuation has surpassed institute's definite value (step S43 " Y "), makes the rotating speed of motor 16 reduce (step S44).Like this, the rotating speed of pulsator 14 descends, and current die down.Consequently, the vibration of casing 10 reduces.As at step S43, amplitude of fluctuation is then judged abnormal vibrations is not taken place when institute's definite value is following, turns back to step S42.Fixed wash time when finishing, the rotation of pulsator 14 is stopped, the washing running stops (step S45).
Figure 19 is the control flow chart in dehydration when running of the washing machine of present embodiment 7.Dehydration running beginning, motor 16 starts, the rotating speed of Washing dewatering tub 13 rise gradually (step S51).Fixed dewatering time do not finish before (step S52 " Y " before), control part 30 is obtained the amplitude of fluctuation of the detection frequency of frequency detecting portion 32, when this amplitude of fluctuation has surpassed institute's definite value (step S53 " Y "), the unbalance correction running (step S54) that had illustrated.After having carried out unbalance correction running, return step S51, dewater once more.As at step S53, amplitude of fluctuation is then judged abnormal vibrations is not taken place when institute's definite value is following, turns back to step S52.Fixed dewatering time when finishing, the rotation of Washing dewatering tub 13 is stopped, the dehydration running stops (step S55).
As mentioned above, washing machine of the present invention can be contained in the pressure sensor that adopts magnetostriction element the various positions in the washing machine for weight, eccentric load or the vibration etc. of detection load amount, water.Above-mentioned any one embodiment only is an example, naturally can carry out suitable change and correction in the scope of the inventive concept.For example, any one above-mentioned embodiment is that the present invention is applicable to that Washing dewatering tub is the example of the eddy current type automatic washing machine of center rotation with the vertical axis, is the tumbling-box washing machine that rotate at the center with the trunnion axis but the present invention also goes for cylinder naturally.In addition, the present invention also goes for the cylindrical drier with spline structure.
Claims (23)
1. one kind has the casing that constitutes profile, hangs and be supported on the outer bucket of casing inside, and the washing machine that is arranged at the inner Washing dewatering tub of this outer bucket rotationally, it is characterized in that,
A) has the magnetostriction element of the site of action of the external force that the weight that is arranged at the load that is contained in the washings in the Washing dewatering tub and the water of being supplied with produces, and be arranged near this magnetostriction element, can detect pressure sensor magnetic property change, that contain coil of this magnetostriction element that above-mentioned external force causes
B) measure the determinator of the weight of above-mentioned load and water according to the output of the coil of this pressure sensor, and
C) before water supply by the said determination device obtain load, the water yield determining to supply according to this load, the operation controller when supplying water, measuring the weight of water, supply water according to the above-mentioned water yield by the said determination device.
2. washing machine according to claim 1 is characterized in that, the vibration that the eccentric load that above-mentioned determinator causes the washings biasing that is placed in the above-mentioned Washing dewatering tub according to the output of above-mentioned pressure sensor coil and this eccentric load cause.
3. one kind has the casing that constitutes profile, hangs and be supported on the outer bucket of casing inside, and the washing machine that is arranged at the inner Washing dewatering tub of this outer bucket rotationally, it is characterized in that,
A) has the magnetostriction element of the site of action that is arranged at the external force that vibration that eccentric load that the washings biasing that is contained in the Washing dewatering tub causes and/or this eccentric load cause produces, and be arranged near this magnetostriction element, can detect pressure sensor magnetic property change, that contain coil of this magnetostriction element that above-mentioned external force causes
B) measure the determinator of above-mentioned eccentric load and/or vibration according to the output of the coil of this pressure sensor.
4. according to any one described washing machine among the claim 1-3, it is characterized in that the mode that the said determination device changes with the inductance of measuring coil is measured the magnetic property change of magnetostriction element.
5. according to any one described washing machine among the claim 1-3, it is characterized in that above-mentioned pressure sensor has the different coil of switchable a plurality of number of turns.
6. according to any one described washing machine among the claim 1-3, it is characterized in that above-mentioned pressure sensor is arranged on the hanging stick support that is supporting the hanging stick that hangs above-mentioned outer bucket, measures the load that this hanging stick is subjected to by this pressure sensor.
7. according to any one described washing machine among the claim 1-3, it is characterized in that above-mentioned pressure sensor is arranged on this washing machine is supported on the support foot on ground, measures the load that this foot is subjected to by this pressure sensor.
8. washing machine according to claim 6 is characterized in that, on above-mentioned a plurality of hanging stick supports above-mentioned pressure sensor is set all.
9. washing machine according to claim 6 is characterized in that, be not on above-mentioned a plurality of hanging stick supports all but therein at least one position above-mentioned pressure sensor is set.
10. washing machine according to claim 9, it is characterized in that, allow on one side above-mentioned Washing dewatering tub low speed rotation, by above-mentioned pressure sensor several times detect on one side, the said determination device is inferred weight, eccentric load or the vibration of load, water according to this detected value.
11. according to claim 2 or 3 described washing machines, it is characterized in that this pressure sensor is contained on this casing, shell vibration is converted to external force like this, is measured by above-mentioned pressure sensor.
12. one kind has the casing that constitutes profile, hangs and be supported on the outer bucket of casing inside, and the washing machine that is arranged at the inner Washing dewatering tub of this outer bucket rotationally, it is characterized in that,
A) has the magnetostriction element of the site of action that is arranged at the external force that load that outer bucket is subjected to and the vibration that should outer bucket produces cause, and be arranged near this magnetostriction element, can detect contract pressure sensor magnetic property change, that contain coil of element of this mangneto that above-mentioned external force causes
B) measure the determinator of above-mentioned load and vibration according to the output of the coil of this pressure sensor.
13. washing machine according to claim 12 is characterized in that, the said determination device has the gravimetry mode and the vibration measurement mode of obtaining above-mentioned vibration of the above-mentioned load of switchable mensuration.
14. washing machine according to claim 13, it is characterized in that, have when above-mentioned Washing dewatering tub rotates the said determination device is set at above-mentioned vibration measurement mode, when above-mentioned Washing dewatering tub stops, the said determination device is set at the control device that switches of above-mentioned gravimetry mode.
15. washing machine according to claim 12 is characterized in that, judges when the magnitude of vibrations that above-mentioned control device is measured at the said determination device has surpassed certain limiting value and rotates unusually.
16. washing machine according to claim 15 is characterized in that, the load size that above-mentioned control device is measured according to the said determination device is set above-mentioned certain limiting value.
17. washing machine according to claim 12 is characterized in that, the said determination device has the load that acts on above-mentioned outer bucket and vibrates the weight vibration measurement mode of measuring simultaneously.
18. washing machine according to claim 12, it is characterized in that, above-mentioned outer bucket by a plurality of means of hanger rods, and an end of above-mentioned pressure sensor is carried on the hanging stick side supporting part of being located at this hanging stick end, and the other end is carried on the casing side supporting part that is arranged on the said machine casing.
19. washing machine according to claim 18 is characterized in that, the hanging stick that above-mentioned pressure sensor is being set in above-mentioned a plurality of hanging sticks has the side-prominent projection of bucket outside above-mentioned.
20. washing machine according to claim 19 is characterized in that, above-mentioned outer bucket outer peripheral face is done thicklyer than the other parts of above-mentioned outer bucket outer peripheral face with the thickness of above-mentioned projection collision part.
21., it is characterized in that the vibration that above-mentioned pressure sensor is measured surpasses when a certain amount of according to any one described washing machine in the claim 2,3 or 12 in washing process or rinse cycle, control and make the pulsator rotating speed slack-off, current are died down.
22. according to any one described washing machine in the claim 2,3 or 12, it is characterized in that, the vibration that above-mentioned pressure sensor is measured in dehydration surpasses when a certain amount of, controls, and carries out the unbalance correction running that the washings that allows in the Washing dewatering tub reapposes.
23. the device that object is placed in the rotating container, this container is rotated is characterized in that,
A) has the magnetostriction element of the site of action of the external force that vibration caused that takes place when being arranged at load that said vesse is subjected to and rotational motion, and be arranged near this magnetostriction element, can detect pressure sensor magnetic property change, that contain coil of this magnetostriction element that above-mentioned external force causes
B) measure the determinator of above-mentioned load and vibration according to the output of the coil of this pressure sensor.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11086815A JP2000279682A (en) | 1999-03-29 | 1999-03-29 | Washing machine |
| JP086815/1999 | 1999-03-29 | ||
| JP096130/1999 | 1999-04-02 | ||
| JP11096130A JP2000288289A (en) | 1999-04-02 | 1999-04-02 | Washing machine and device provided with rotating container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1268596A true CN1268596A (en) | 2000-10-04 |
| CN1128258C CN1128258C (en) | 2003-11-19 |
Family
ID=26427902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00103582A Expired - Fee Related CN1128258C (en) | 1999-03-29 | 2000-03-29 | Washing machine and device having rotating container |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100358311B1 (en) |
| CN (1) | CN1128258C (en) |
| TW (1) | TW465609U (en) |
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| KR910012433A (en) * | 1989-12-30 | 1991-08-07 | 이헌조 | Amount Detection Automatic Washing Machine Using Flow Meter |
| KR950004283B1 (en) * | 1992-04-13 | 1995-04-28 | 광덕금속공업주식회사 | Washing machine of water level control device |
| KR0119708Y1 (en) * | 1994-12-21 | 1998-08-17 | 노관호 | Pressure sensor |
| JPH0994380A (en) * | 1995-09-29 | 1997-04-08 | Matsushita Electric Ind Co Ltd | Washing machine |
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- 2000-03-28 KR KR1020000015663A patent/KR100358311B1/en not_active IP Right Cessation
- 2000-03-29 CN CN00103582A patent/CN1128258C/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| KR100358311B1 (en) | 2002-10-25 |
| KR20000063031A (en) | 2000-10-25 |
| TW465609U (en) | 2001-11-21 |
| CN1128258C (en) | 2003-11-19 |
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