JP4013379B2 - Washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a washing machine that sequentially controls a series of steps of washing, rinsing, and dewatering.
[0002]
[Prior art]
Conventionally, in this type of washing machine, the laundry in the washing and dewatering tub is controlled by controlling the on / off time of a motor (driving means) with a uniform rotational force (output), a water supply valve, a drain valve, etc. The amount of the cloth was determined, and each process of washing, rinsing and dehydration was automatically set and sequentially controlled.
[0003]
[Problems to be solved by the invention]
However, in such a conventional configuration, since the rotational force of the motor is uniform, the small-capacity type (washing capacity) for the large-capacity type (for example, the washing capacity is 5 kg or more) can be controlled only by turning on / off in small increments. In order to make the airframe compact even with a large capacity, it is necessary to reduce the diameter of the pulsator and washing / dehydrating tub, etc., so the mechanical force applied to the cloth is weakened. In order to secure basic performance such as washing and rinsing, there is a problem that the operation time for washing and rinsing becomes longer, or the power consumption is increased accordingly.
[0004]
The present invention solves the above-mentioned problems, and even if the aircraft is a compact or small capacity type, while ensuring basic performance such as washing and rinsing, the operation time can be shortened and the power consumption can be reduced. The purpose is to do.
[0005]
[Means for Solving the Problems]
The present invention, in order to achieve the above object, and rotatably housed rotatably in provided the washing and dewatering tank receiving tank to the inner bottom portion of the pulsator and capacitor for a pulsator or a washing and dewatering tank fast Rotation is driven by a connected motor , water is supplied into the washing / dehydrating tub by a water supply valve, and the amount of laundry in the washing / dehydrating tub is detected by damping the rotation of the pulsator after the cloth amount detecting means rotates the pulsator. and, the motor type the value from the cloth amount detecting means or the like by the control means, wash by controlling the water supply valve or the like, rinsed, and configured to control a series of strokes of the dehydration or the like, control means, as the washing line the Oite, and agitation step before detecting the amount of laundry by fabric amount detector after turning off rotates the pulsator before the laundry amount detection time for performing water supply to drive the water supply valve, and drives the water feed valve Detected by cloth amount detection means Up to a predetermined water level corresponding to the amount of濯物 by the pulsator causes the rotation driven after the water supply has a stirring stroke after and continues wash step, the previous stirring step, by setting lower than the rear stirring process the capacitance of the capacitor , which is constituted to rotate the pulsator by driving the motor with a small output from the output of the motor at the rear agitation stroke.
[0006]
Thereby, even if the machine body is a compact or small capacity type, the accuracy of the cloth amount detection can be improved and the cloth amount can be detected in a short time .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
According to a first aspect of the present invention, the washing and dewatering tank which is disposed rotatably in the inner bottom portion of the path Ruseta, the tub that rotatably accommodates the washing and dewatering tank, the pulsator or the washing a motor for rotating the and dewatering tank, a condenser for the connected phase advance of the motor, the water supply valve for supplying water to the washing and dewatering in the aquarium, the attenuation of the rotation of the pulsator after driving the pulsator Cloth amount detecting means for detecting the amount of laundry in the washing / dehydrating tub, and by inputting values from the cloth amount detecting means and controlling the motor, water supply valve, etc., washing, rinsing, dehydrating, etc. Control means for controlling a series of strokes, and the control means detects the amount of cloth after the pulsator is rotationally driven and turned off at the time of detecting the amount of cloth before the water supply valve is driven to supply water in the washing stroke. Laundry by means To continue the agitation step before detecting the amount, the washing operation by rotating the pulsator after water to a predetermined level corresponding to the amount of laundry detected by the laundry amount detecting means by driving the water supply valve and a stirring step after that, in the previous stirring step, by setting the capacitance of the capacitor lower than the rear stirring step, by driving the motor at the output is less than the output of the motor at the rear stirring step The pulsator is configured to rotate, and even with a small-capacity type with a small amount of cloth, the cloth amount detection accuracy can be improved and the cloth amount can be detected in a short time .
[0008]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0009]
Example 1
As shown in FIG. 1, the exterior body 1 elastically supports a receiving tank 3 supported by a support plate 2 with a suspension 4. The receiving tub 3 includes a washing / dehydrating tub 6 in which a pulsator 5 is rotatably disposed at the center bottom. The washing and dewatering tub 6 has a plurality of through holes 6a formed on the inner peripheral surface.
[0010]
The clutch mechanism portion 7 is attached to the outer bottom portion of the support plate 2, and includes a dewatering shaft 8 connected to a washing and dewatering tub 6 formed on a concentric double shaft and a washing shaft 9 fixed to the pulsator 5. The power of the motor (driving means) 11 that is supported and transmitted by the V-belt 10 is transmitted by switching to the dehydrating shaft 8 and the washing shaft 9, and also has a brake mechanism for fixing the washing and dewatering tub 6 at the time of washing and rinsing. ing.
[0011]
The electromagnetic valve 12 opens and closes the electromagnetic drain cock 13. The electromagnetic drain cock 13 is closed, washed and rinsed by non-excitation (off), and the solenoid valve 12 is excited (on). When the electromagnetic drain cock 13 is opened, drainage is enabled and braking of the washing / dehydrating tub 6 is released, so that the washing / dehydrating tub 6 can be rotated and dehydrated. The water supply valve 14 supplies water to the washing and dewatering tank 6.
[0012]
As shown in FIG. 2, the control device 15 includes a control means 16, a power switching means 17, a cloth amount detection means 18, a water level detection means 19, an operation display means 20, a storage means 21, and the like. By controlling the power switching means 17, the motor 11, the electromagnetic valve 12, and the water supply valve 14 are controlled to sequentially control a series of steps of washing, rinsing, and dewatering. Reference numerals 22 and 23 are capacitors for phase advancement of the motor 11.
[0013]
The control means 16 has an agitation process in which the pulsator 5 is rotationally driven in the washing process and the rinsing process. In the agitation process, the phase-advancing capacitors 22 and 23 are used together, and the output of the motor 11 in the agitation process is agitated process. It is configured to rotate the pulsator 5 with a larger output than in the other strokes.
[0014]
The operation will be described with reference to FIG. 3 in the above configuration. First, after turning on the power, the laundry is put into the washing / dehydrating tub 6, and in step 101, an automatic course or individual operation is input according to the user's preference. When the operation is started, in step 102, it is first determined whether or not the washing process is performed. In the washing process, the capacitors 22 and 23 are used together in step 103 to set a high capacity. In step 104, the motor 11 is preceded. Is turned on and off for a predetermined time, and the pulsator 5 is driven in the reverse direction.
[0015]
In step 105, the counter electromotive force generated between the terminals of the capacitor 22 when the motor 11 is turned off due to the frictional resistance applied to the pulsator 5 is converted into a pulse by the cloth amount detection means 18 to detect the cloth amount, thereby determining the cloth amount. The amount of detergent and the water level with respect to the amount of cloth determined by the operation display means 20 are displayed. In step 107, the water supply valve 14 is turned on according to the amount of cloth to automatically supply water, and when the water level reaches a predetermined level, the water supply valve 14 is turned off.
[0016]
In step 108, the pulsator 5 is driven with high torque by turning on / off the motor 11 and reversing the forward / reverse direction to stir the laundry, and the washing process is executed. Here, since high torque is obtained and the mechanical force is increased, the laundry is also greatly inverted by stirring, and the friction with the pulsator 5 is also increased, thereby improving the cleaning performance. Since the performance is improved, the time for the washing process can be shortened, and since the energization time to the motor 11 is also reduced, the power consumption can be reduced.
[0017]
At the same time as the end of the washing or rinsing process, it is determined whether it is a rinsing process or a dehydrating process in the next step 111 or 121, and the condenser 23 is turned off at the start of the rinsing or dehydrating process (steps 112 and 122). At the same time, the electromagnetic valve 12 is turned on (step 113, step 123), the electromagnetic drain cock 13 is opened, the motor 11 is switched to the dehydrating shaft 8, and the dehydrating shaft 8 is released from braking.
[0018]
At this time, the water in the washing / dehydrating tub 6 and the receiving tub 3 is discharged to the outside of the machine, and at the same time, the washing / dehydrating tub 6 becomes rotatable. At the end of drainage, the washing / dehydrating tub 6 is rotated while the motor 11 is turned on / off in steps 114 and 124, and the laundry is pressed against the inner wall of the washing / dehydrating tub 6 by centrifugal force. It is discharged out of the washing / dehydrating tub 6 through a hole 6 a provided in the washing / dehydrating tub 6, and discharged to the outside through the electromagnetic drain cock 13.
[0019]
Thereafter, in the rinsing process, the electromagnetic valve 12 is turned off once in step 115 and the electromagnetic drain cock 13 is closed. In step 116, the capacitors 22 and 23 are used together to set the capacity high. In step 117, the water supply valve 14 is turned on again. The water supply valve 14 is turned off when the water is automatically supplied and the water supply valve 14 is reached. In step 118, the pulsator 5 is driven by turning on / off the motor 11 and reversing the forward / reverse direction to agitate the laundry, and the laundry is also washed by centrifugal force. Rinse the laundry that was pressed against the inner wall of the dehydration tank 6.
[0020]
Here, since a high torque is obtained and the mechanical force is increased, the laundry is quickly peeled off by a strong stirring force, and the reversal after peeling is increased, thereby improving the rinsing performance. Since the performance is improved, the rinsing process time can be shortened, and the time for energizing the motor 14 is also reduced, so that the power consumption can be reduced.
[0021]
In this embodiment, the control means 16 has an agitation process for rotationally driving the pulsator 5 in both the washing process and the rinsing process. In the agitation process, the phase-advancing capacitors 22 and 23 are used in combination. The output of the motor 11 in the stirring stroke is made larger than the output in the stroke other than the stirring stroke, and the pulsator 5 is rotated. However, the pulsator 5 is driven to rotate in either the washing stroke or the rinsing stroke. You may make it have a stirring stroke to make.
[0022]
(Example 2)
The control means 16 shown in FIG. 2 controls a series of processes such as washing, rinsing, and dewatering, and also rotates the pulsator 5 in a pre-stirring process for rotating the pulsator 5 when detecting the amount of cloth, and in a washing process and a rinsing process. The pulsator 5 is configured to rotate at an output smaller than the output of the motor 11 in the post-stirring step. Other configurations are the same as those of the first embodiment.
[0023]
The operation of the above configuration will be described with reference to FIG. 4. First, after turning on the power, the laundry is put into the washing and dewatering tub 6, and in step 201, an automatic course or individual operation key is selected according to the user's preference. When the operation is started by input, in step 202, it is first determined whether or not it is a washing process, and in the washing process, the condenser 23 is turned off and set to a lower capacity in step 203 as a pre-stirring process 24. The motor 11 is turned on / off for a predetermined time to drive forward / reverse inversion.
[0024]
In step 205, the counter electromotive force generated between the terminals of the capacitor 22 when the motor 11 is turned off due to the frictional resistance applied to the pulsator 5 is converted into pulses by the cloth amount detection means 18 to detect the cloth amount and determine the cloth amount. The detergent amount and the water level are displayed with respect to the cloth amount determined by the operation display means 20.
[0025]
The pulse conversion value by the cloth amount detection means 18 shows the attenuation characteristic shown in FIG. 5, A is a pulse conversion value when the cloth amount is large, the pulse conversion value is small, the attenuation time td1 is short, and when B is small, the pulse conversion value. There are many values, and the decay time td2 is long. Since the pulse of the capacitor 22 disappears when the rotation of the motor 11 stops, it is basically the same as inertial rotation speed detection.
[0026]
On the other hand, as the post-stirring step 25, when the capacitors 22 and 23 are used together in step 207 and set to a high capacity, in step 208, the water supply valve 14 is turned on according to the amount of cloth to automatically supply water, and when a predetermined water level is reached. The water supply valve 14 is turned off, and in step 209, the pulsator 5 is driven with high torque by turning on / off the motor 11 and reversing the forward / reverse direction to increase the stirring force of the laundry, and the washing process is executed.
[0027]
Here, in the post-stirring step 25, high torque is obtained and the mechanical force is increased, so that the laundry is also greatly inverted by stirring, and the friction with the pulsator 5 is also increased, thereby improving the cleaning performance. As a result of the improvement, the washing process time can be shortened, and since the energization time to the motor 11 is also reduced, the power consumption can be reduced.
[0028]
Further, in the pre-stirring step 24, FIG. 6 shows the relationship of the pulse conversion value with respect to the cloth amount for the cloth amount detecting means 18, but the characteristic C is a case where the torque of the motor 11 is relatively high, and the characteristic D is compared. This is a case where the torque of the motor 11 is low, and the gradient has a relationship of C <D.
[0029]
From this, if the width of the pulse conversion value for the cloth amount 0 to the rated capacity W is E with respect to the characteristic C and F with respect to the characteristic D, E <F, and the torque of the motor 11 is relatively low. The detection accuracy can be improved, and in particular, if the diameters of the pulsator 5 and the washing / dehydrating tub 6 are small, the variation is reduced and the resolution of the cloth amount detection can be improved. In addition, the time required for the pre-stirring step 24 can be shortened by the increase in the resolution of the cloth amount detection.
[0030]
At the same time as the end of the washing or rinsing process, it is determined whether it is a rinsing process or a dehydrating process in the next step 211 or 221 and the condenser 23 is turned off at the start of the rinsing or dehydrating process (steps 212 and 222). At the same time, the electromagnetic valve 12 is turned on (steps 213 and 223), and the electromagnetic drain cock 13 is opened, the motor 11 is switched to the dehydrating shaft 8, and the dehydrating shaft 8 is released from braking simultaneously.
[0031]
At this time, the water in the washing / dehydrating tub 6 and the receiving tub 3 is discharged to the outside of the machine, and at the same time, the washing / dehydrating tub 6 becomes rotatable. At the end of drainage, while the motor 11 is turned on / off in steps 214 and 224, the washing and dewatering tub 6 is rotated, and the laundry is pressed against the inner wall of the washing and dewatering tub 6 by centrifugal force. It is discharged out of the washing / dehydrating tub 6 through a hole 6 a provided in the washing / dehydrating tub 6, and discharged to the outside through the electromagnetic drain cock 13.
[0032]
Thereafter, in the rinsing step, the solenoid valve 12 is turned off once in step 215 and the electromagnetic drain cock 13 is closed. In the post-stirring step 25, the capacitors 22 and 23 are used together in step 216 to set a high capacity, and in step 217 again. The water supply valve 14 is turned on to automatically supply water, and when the water level reaches a predetermined level, the water supply valve 14 is turned off. In step 218, the pulsator 5 is driven by turning on / off the motor 11 and performing reverse reversal control to stir the laundry. Then, the laundry which has been pressed against the inner wall of the washing / dehydrating tub 6 by the centrifugal force is removed and rinsed.
[0033]
Here, since a high torque is obtained and the mechanical force is increased, the laundry is quickly peeled off by a strong stirring force, and the reversal after peeling is increased, thereby improving the rinsing performance. Since the performance is improved, the rinsing process time can be shortened, and the time for energizing the motor 14 is also reduced, so that the power consumption can be reduced.
[0034]
In this embodiment, the control means 16 has a post-stirring step 25 for rotating the pulsator 5 in both the washing step and the rinsing step. In the post-stirring step 25, the phase-advancing capacitors 22, 23 are used. , And the pulsator 5 is rotated by making the output of the motor 11 in the stirring stroke larger than the output in the stroke other than the stirring stroke, but the pulsator in either one of the washing stroke or the rinsing stroke You may make it have a post-stirring process which drives 5 rotationally.
[0035]
(Example 3)
The control means 16 shown in FIG. 2 controls a series of steps such as washing, rinsing, and dehydration, and at the time of dehydration start, the washing is performed with an output larger than the output of the motor 11 that rotates the washing / dehydration tub 6 at the time of steady dehydration rotation. The cum dewatering tank 6 is configured to rotate. Other configurations are the same as those in the first or second embodiment.
[0036]
The operation of the above configuration will be described with reference to FIG. The dewatering process includes a draining process 26, a starting process 27 for gradually starting the rotation, a continuous rotating process 28 for continuous rotation, and a brake process 29.
[0037]
In the drainage stroke 26, the electromagnetic valve 12 is turned on in step 301, and the electromagnetic drainage cock 13 is opened, the motor 11 is switched to the dehydrating shaft 8, and the dehydrating shaft 8 is braked simultaneously. If it is determined in step 302 that the water in the washing / dehydrating tub 6 and the receiving tub 3 has been discharged to the outside by the water level detection means 19, in the next startup step 27, the capacitors 22 and 23 are used in combination in step 303 to increase the capacity. Set to.
[0038]
In step 304, while the on / off control of the motor 11 is being performed, the rotation of the washing / dehydrating tub 6 is gradually started up and the laundry containing a large amount of water is uniformly pressed against the inner wall of the washing / dehydrating tub 6 by centrifugal force. In step 305, the condenser 23 is turned off and set to a lower capacity in step 305. In step 306, the motor 11 is continuously energized, and the motor 11 is squeezed firmly at high speed. Water is washed from the hole 6a provided in the washing and dewatering tub 6. It is discharged out of the cum dewatering tank 6 and is discharged out of the machine through the electromagnetic drain cock 13.
[0039]
When the motor 11 is continuously energized for a predetermined time, the electromagnetic valve 12 is turned off at step 307 in the brake stroke 29, the electromagnetic drain cock 13 is closed, the motor 11 is switched to the washing shaft 9, and the dehydrating shaft 8 is braked. Do it at the same time.
[0040]
Here, as shown in FIG. 8, the starting stroke 27 rotates the washing and dewatering tub 6 at a high torque, so that it becomes as shown in the dewatering rising characteristic G, and the laundry contains a large amount of water and the load is large. The time T1 to reach the steady rotation speed N is T1 <T2 with respect to the time T2 to reach the steady rotation speed N in the dehydration rising characteristic H at low torque. In addition, it is possible to prevent insufficient aperture, and in the steady rotation stroke 28 where the inertial force is large, the power consumption can be reduced by switching to a lower torque for rotation.
[0041]
Needless to say, in the automatic course operation, if the intermediate dehydration process in the rinsing process is included in addition to the final dehydration process, the effect is further improved.
[0042]
【The invention's effect】
According to the invention described in the claim 1 of the present invention as described above, the washing and dewatering tank which is disposed rotatably in the inner bottom portion of the path Ruseta, the tub that rotatably accommodates the washing and dewatering tank a motor for rotating the pulsator or the washing and dewatering tank, a condenser for the connected phase advance of the motor, the water supply valve for supplying water to the washing and dewatering in the water tank, said after driving the pulsator Washing is performed by inputting a value from the cloth amount detecting means for detecting the amount of laundry in the washing / dehydrating tub by attenuating rotation of the pulsator and the cloth amount detecting means and controlling the motor, the water supply valve, etc. Control means for controlling a series of strokes such as rinsing, dehydration, etc., and the control means drives the water supply valve to rotate the pulsator during the washing stroke to turn off the pulsator at the time of detecting the cloth amount. After the cloth quantity inspection A stirring step prior to detecting the amount of laundry by means rotationally drives the pulsator after water to a predetermined level corresponding to the amount of laundry detected by the laundry amount detecting means by driving the water supply valve wherein and a stirring step after and continues wash step, wherein in the front agitation stroke, by setting the capacitance of the capacitor lower than the after stirring step, the output is smaller than the output of the motor at the rear stirring step Since the pulsator is configured to rotate by driving a motor , the cloth amount detection accuracy can be improved and the cloth amount can be detected in a short time even in a small-capacity type with a small amount of cloth. .
[ Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a washing machine according to a first embodiment of the present invention. FIG. 2 is a block circuit diagram of the washing machine. FIG. 3 is an operation flowchart of the washing machine. Flowchart of operation of washing machine of embodiment [FIG. 5] A diagram showing attenuation characteristics of pulse conversion value by cloth amount detection means of the washing machine. [FIG. 6] Pulse conversion value by cloth amount detection means for cloth amount of the washing machine and FIG. 7 is a flowchart showing the operation of the washing machine according to the third embodiment of the present invention. FIG. 8 is a characteristic chart of the relationship between the number of rotations of the washing and dewatering tub and the dewatering time of the washing machine.
3 receiving tank 5 pulsator 6 washing and dewatering tank 11 motor (driving means)
16 Control means

Claims (1)

A washing / dehydrating tub in which a pulsator is rotatably disposed on the inner bottom, a receiving tub in which the washing / dehydrating tub is rotatably accommodated, a motor for rotationally driving the pulsator or the washing / dehydrating tub, and the motor detection and capacitor for connected fast, a water supply valve for supplying water to the washing and dewatering in the aquarium, the attenuation of the rotation of the pulsator after driving the pulsator the amount of laundry in the washing and dewatering the water tank And a control means for controlling a series of processes such as washing, rinsing and dehydration by inputting a value from the cloth quantity detecting means and controlling the motor, water supply valve, etc. The control means includes a pre-stirring step of detecting the amount of laundry by the cloth amount detecting means after the pulsator is rotationally driven and turned off at the time of detecting the cloth amount before driving the water supply valve to supply water in the washing step. , said Water valve is driven by rotating the pulsator after water to a predetermined level corresponding to the amount of laundry detected by the laundry amount detecting means and a stirring process after the system continues the wash step, the In the pre-stirring stroke, the capacity of the condenser is set lower than the post-stirring stroke, so that the pulsator is rotated by driving the motor with an output smaller than the output of the motor in the post-stirring stroke Machine.

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