JPH07213778A - Spin-drying/washing machine - Google Patents

Abstract

PURPOSE:To prevent violent water splashing and perform sufficient rinsing by interrupting the spin-drying/rinsing process if the detected vibration of a spining tub is a prescribed value or above, and implementing the rinsing process when the tub is rotated while water is injected into the tub through an inner cover for the spin-drying/rinsing process. CONSTITUTION:A vessel 2 is supported in an outer box l via an elastic hanging mechanism 3 in this spin-drying/washing machine, a spining tub 4 is stored in the vessel 2, and a stirring body 5 is arranged at the bottom section in the tub 4. A flat ring-like vessel cover 12 is fitted at the upper section of the vessel 2, and an inner cover 13 is pivotally supported vertically rotatably on a spindle 14 in the vessel cover 12. When the tub 4 is rotated by a drive mechanism 9 while water is injected into the tub 4 through the inner cover 13, the spin- drying/rinsing process is implemented. The vibration of the tub 4 is detected by a vibration detecting means 27. If the vibration of the tub 4 is a prescribed value or above when the tub 4 is rotated, the implementation of the spin-drying/ rinsing process is interrupted, and the rinsing process is implemented instead.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined washing machine for dehydration and rinsing.

[0002]

2. Description of the Related Art Conventionally, in a washing machine for combined use of dehydration,
There is provided one that can be dehydrated and rinsed. In this case, an inner lid is provided on the upper part of the tank,
Water is poured into the tub through the water holes formed in the inner lid, and at the same time, the tub is rotated for dehydration to rinse the laundry, and the amount of water used is reduced particularly efficiently. You can now rinse your laundry.

[0003]

However, in the case of the above-mentioned one, the pouring of water into the tank through the inner lid is carried out under the condition that the inner lid vibrates together with the tank during the dehydration rinsing, and especially the vibration of the tank. When it is large, there is a problem in that the water splashes from the upper surface of the inner lid to the floor surface, causing the floor surface to get wet. In addition, at that time, there was a problem that water passing through the inner lid was also scattered and did not hit the laundry in the tub well, so that sufficient rinsing performance could not be obtained.

The present invention has been made in view of the above-mentioned circumstances, and therefore an object thereof is a combined use of dehydration which does not cause a severe water splash even when the vibration of the tank is large and which can be sufficiently rinsed in terms of performance. To provide a washing machine.

[0005]

In order to achieve the above object, the washing machine for combined use of dehydration of the present invention comprises a vibration detecting means for detecting the vibration of the tub, and the vibration detecting means when the tub is rotated. When the vibration of the tub is judged to be more than the predetermined value from the detection result by the, the execution of the dehydration rinsing process is stopped, and instead the water is stored in the tub to generate a water flow to rinse the laundry to rinse it. It is characterized in that the process is executed.

In this case, the vibration of the tank is judged during the dehydration step immediately after the washing step, and when the vibration of the tank is judged to be equal to or more than a predetermined value at that time, the vibration of the dehydration rinse step during the subsequent rinse step is determined. It is desirable to stop the execution and execute the rinsing process.

Further, the rotation of the tank during the dehydration rinsing process is performed at a low speed, and from the detection result by the vibration detection means at that time,
When it is determined that the vibration of the tank is equal to or more than the predetermined value, the execution of the dehydration rinsing step may be stopped and the rinsing rinsing step may be executed.

Furthermore, when the tank is rotated at a low speed during the dehydration rinsing process, and when the vibration of the tank is judged to be equal to or more than a predetermined value from the detection result of the vibration detecting means at that time,
The rotation speed of the tank may be further reduced to continue the dehydration rinsing process.

[0009]

According to the above means, when the dehydration rinsing process is executed, or when it is determined that the vibration of the tank when the dehydration rinsing process is executed is equal to or more than the predetermined value, the execution of the dehydration rinsing process is stopped.
Since the rinsing process is performed instead, a vigorous splash of water does not occur, and a sufficient rinsing can be performed in terms of performance.

In this case, in particular, if the vibration of the tank is judged during the dehydration step immediately after the washing step, whether the tank vibrates above a predetermined value before the dehydration rinse step is performed. It is possible to determine whether or not a severe water splash has occurred.

Further, even if the vibration of the tank is judged during the dehydration rinsing stroke, if the rotation of the tank during the dehydration rinsing stroke is performed at a low speed, the vibration of the tank itself will be less likely to occur and water splashing The occurrence can be reduced.

Furthermore, when the tank is rotated at a low speed during the dehydration rinsing step, and when the vibration of the tank is judged to be a predetermined value or more from the detection result by the vibration detecting means at that time,
Even if the rotation speed of the tank is further reduced to continue the dehydration rinsing process, the water splash can be further reduced, and in this case, the rinsing can be performed while saving the amount of water used as much as possible. it can.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First of all, FIG. 2 shows the structure of the entire washing machine for combined use of dehydration. An outer box 1 is provided with a tub 2 supported by an elastic suspension mechanism 3 (only a part is shown), and a tub 4 is provided in the tub 2. Are installed. In addition, a stirring member 5 is provided at the bottom in the tank 4.
Is provided, outside the trough 2 below, inside the trough 2 and the tank 4.
A drain valve 6 and a drain hose 7 for draining from the inside are disposed, and a drive mechanism 9 mainly including a motor 8 is disposed, and the drive mechanism 9 stops the tank 4 during washing and rinsing. The stirring body 5 is rotated so that the tank 4 is rotated together with the stirring body 5 during the dehydration rinsing and dehydration.

In detail, the tank 4 has a dehydration hole 11 only in the upper portion where the balance ring 10 is mounted in this case, and the dehydration hole 11 is dehydrated through a gap between the balance ring 10 and the upper portion. It is like this. On the other hand, a flat ring-shaped trough cover 12 is attached to the upper portion of the trough 2, and an inner lid 13 is pivotally supported on the trough cover 12 by a rear support shaft 14 so as to be vertically rotatable. The opening in 12 is opened and closed. Therefore, the inner lid 13 is located above the tank 4 and is closed in the closed state.
It is designed to cover the upper part of the.

Therefore, a concave portion 15 is formed at the center of the rear portion which is a part of the peripheral portion of the inner lid 13. The concave portion 15 has a sloped shape in which the bottom portion is gradually lowered from the front portion to the rear portion, and the water passage hole 16 is provided in the rear portion which is the lowest portion.
Are formed in large numbers, and the concave portions 15 are made to function as water passage portions. A concave portion cover 17 that covers the open upper surface portion of the concave portion 15 is attached to the open upper surface portion of the concave portion 15 except the upper portion of the water passage hole 16, and the front of the inner lid 13 is also covered. The portion is provided with a handle 18 for opening the lid.

Further, a top cover 19 is mounted above the inner lid 13 and the trough cover 12, and an outer lid 20 is provided on the top cover 19 and the concave portion 15 of the inner lid 13 is provided.
A water supply device 22 mainly provided with a water supply valve 21 which is located in the upper rear part and supplies water into the concave portion 15 from there is provided.

On the other hand, FIG. 3 shows a microcomputer 23 provided in the top cover 19, which functions as a control means for performing control as will be described later, and a switch input section composed of various operation switches. Various operation signals are input from 24, and a lid opening / closing signal is input from a lid switch 25 which responds to opening / closing of the outer lid 20,
Further, a water level detection signal is input from a water level sensor 26 that detects the water level in the tank 4, and a vibration detection signal is input from a vibration sensor 27 that functions as vibration detection means that detects the vibration of the tank 4. It has become.

The vibration sensor 27 is composed of, for example, an acceleration sensor using a piezoelectric element, as shown in FIG.
As shown in FIG. 4, it is attached to the upper part of the trough 2 that vibrates together with the tank 4, and as shown in FIG. 4, a voltage corresponding to the amplitude of vibration is output as a vibration detection signal. In this case, the same acceleration sensor using a strain gauge,
Alternatively, a servo type may be used.

Therefore, the microcomputer 23
As shown in FIG. 3, a display unit 28 including various displays and a drive for driving the water supply valve 21, the motor 8, and the drain valve 6 based on the above-mentioned inputs and the control program stored in advance. A drive control signal is supplied to the circuit 29.

Therefore, the control contents of the microcomputer 23 will be described below. As shown in FIG. 1, the microcomputer 23 first executes the washing process after its operation is started (step S1), and then opens the drain valve 6 to perform drainage for draining the water in the tank 4. (Step S2). And then, tank 4
The parameter a indicating the vibration information of is initialized to "0" (step S3), and then the tank 4 is set to 800 [rp], for example.
The washing liquid remaining in the laundry is spun off and discharged by centrifugal force by rotating at a speed of [m] (step S4).

During the above dehydration, the microcomputer 2
3 determines whether or not the parameter a is "1" (step S5), and if it is determined not to be "1",
Based on the vibration detection signal from the vibration sensor 27, it is determined whether the vibration of the tank 4 is a predetermined value or more (step S).
6). Here, as described above, the vibration sensor 27 outputs the voltage corresponding to the amplitude of the vibration of the tank 4 as the vibration detection signal, and the microcomputer 23 specifically outputs the output voltage ( It is determined whether or not the vibration detection signal) is a value indicating an amplitude of 10 [mm] or more (2 [V] or more in FIG. 4).

If it is determined in step S6 that the vibration of the tank 4 is not greater than a predetermined value (the output voltage is not a value indicating an amplitude of 10 [mm] or more), then 2 [minutes] has elapsed. Whether or not it is determined (step S7), and if it is determined that the time has not elapsed, the process returns to step S4. On the other hand, step S
If it is determined in 6 that the vibration of the tank 4 is equal to or more than a predetermined value (the output voltage is a value indicating an amplitude of 10 [mm] or more), the parameter a is set to "1" (step S8), and step S7 is performed. Proceed to. Therefore, in this case, when 2 [minutes] has not elapsed, it is determined that the parameter a is "1" (the vibration of the tank 4 is equal to or more than the predetermined value) in step S5 which is returned to thereafter, and the process proceeds to step S7. move on.

If it is determined in step S7 that 2 minutes has passed, it is again determined whether the parameter a is "1" (step S9), and it is not "1" (tank 4). If the vibration of is not above the specified value),
A dehydration rinsing process is executed (step S10).

FIG. 5 concretely shows the contents of execution of the dehydration rinsing process. First, the water supply valve 21 is opened to open the concave portion 1.
While pouring water into the tank 4 from the water passage hole 16 of 5, the operation of dehydrating the laundry by rotating the tank 4 at a low speed of, for example, 50 [rpm] is performed for, for example, 1 [minute], and then the pouring is stopped. Then, the tank 4 is rotated at a high speed of, for example, 1000 [rpm] to dehydrate the laundry, for example, for 1 [minute] and 30 [second]. Then, the operation of dehydrating while pouring water and the operation of only dehydrating are performed twice each (three times in total), and finally, water is supplied to the tank 4 so as to store water up to a predetermined water level, and the stirring body 5 is rotated. By doing so, a water flow is generated in the tub 4, and the rinse is performed for rinsing the laundry with the water flow for, for example, 2 [minutes].

On the other hand, if it is determined in step S9 that the parameter a is "1" (the vibration of the tank 4 is equal to or greater than the predetermined value), the rinsing stroke is executed (step S11). FIG. 6 specifically shows the execution contents of the trial rinsing process. In this case, first, the water is stored in the tub 4 up to a predetermined water level, and the rinsing is performed for 2 minutes to rinse the laundry with the generated water flow. Go for a while, drain it, and dehydrate for another 2 [minutes]. Then, this process is repeated again, and thereafter, water is further stored in the tank 4 up to a predetermined water level and rinsed for 2 [minutes] to rinse the laundry with the generated water flow.

FIG. 7 shows a comparison of the rinsing performance between the dehydration rinsing process and the storing rinsing process, and it can be seen that almost the same rinsing performance is obtained at a rinsing ratio of about 1.10. However, in the dehydration rinsing process, the centrifugal force generated by rotating the tank 4 while pouring water into the tank 4 allows water to be efficiently passed through the laundry, and the detergent content can be efficiently diluted. As shown in FIG. 5 and FIG. 6, compared with the total rinsing stroke of 120 [l], the dehydration rinsing stroke has an advantage of 70 [l]. It should be noted that even when either the dehydration rinsing process or the rinsing process is performed, the dehydration process is thereafter performed (step S12), and the operation is ended.

As described above, according to this structure, the tank 4 is detected based on the detection result of the vibration sensor 27 when the tank 4 is rotated.
When the vibration of is above a predetermined value and is judged to be large,
The execution of the dehydration rinsing step is stopped, and the pool rinsing step is executed instead, so that although the amount of water used increases, vigorous water splashing does not occur and sufficient rinsing can be performed in terms of performance.

Further, in particular, since the vibration of the tank 4 is determined during the dehydration step immediately after the washing step, the tank 4 vibrates in advance to a large value above a predetermined value before the dehydration rinse step is executed. You can judge whether or not,
It is possible to prevent the occurrence of severe water splashes.

The vibration detecting means in the above embodiment is composed of a rotation sensor which directly detects the rotation of the tank 4 or indirectly from the rotation of the motor 8 and the like, and a microcomputer 23. May be In this case, the rotation detection signal from the rotation sensor and the microcomputer 2
The rotation speed of the tank 4 is calculated by counting the time according to 3, and the calculated rotation speed is a predetermined value (for example, 300 [r
pm]) is further measured by the microcomputer 23. If the tank 4 is vibrating greatly, it takes time for the rotation speed to reach the predetermined value, and therefore, the measurement time t until the rotation speed reaches the predetermined value is a predetermined value (for example, 7). [Sec]) or more, it is determined that the vibration of the tank 4 is also a predetermined value or more.

In contrast to the above, FIG. 9 shows a second embodiment of the present invention in which the vibration of the tank 4 is judged during the dehydration rinsing process. Specifically, in the case of this, the dehydration step immediately after the washing step (step S1
After 3), when the dehydration rinsing process is started, first, the count value N indicating the number of dehydration rinsing is initialized to "0" (step S14), and then according to the process table shown in FIG. , The first water injection in the dehydration rinsing process (step S
15), driving the tank 4 at low speed (step S16),
Then, based on the vibration detection signal from the vibration sensor 27, it is determined whether the vibration of the tank 4 is equal to or more than a predetermined value (step S17).

If it is determined in step S17 that the vibration of the tank 4 is not more than the predetermined value, it is determined whether 1 [minute] has elapsed (step S18), and it is determined that it has not elapsed. The process returns to step S15, but if it is determined that the time has elapsed, dehydration is performed (step S19). Then, after that, "1" is added to the count value N (step S20), and it is determined whether or not the count value N reaches "3", that is, whether or not dehydration rinsing is performed three times. (Step S21), while it is determined that the value has not reached "3" (three times of dehydration rinsing has not been performed), the process returns to Step S15, and when it is determined that "3" has been reached, a rinsing rinse is performed. (Step S22), the process proceeds to the previous step S12.

If it is determined in step S17 that the vibration of the tank 4 is equal to or larger than the predetermined value, the dehydration rinsing process is stopped and the rinsing process is executed for the first time (step S11). To step S12.

That is, in the case of this, when the tank 4 is rotated at a low speed during the dehydration rinsing process, and the vibration sensor 27 detects that the vibration of the tank 4 is above a predetermined value, , The execution of the dehydration rinse step is stopped, and the trial rinse step is executed. Thus, even if the vibration of the tank 4 is judged during the dehydration rinse step,
By rotating the tank 4 at a low speed during the dehydration rinsing process, vibration of the tank 4 itself is less likely to occur, and water splash can be further reduced.

FIG. 10 shows a third embodiment of the present invention. Even with this, the vibration of the tank 4 is judged during the dehydration rinsing process. In this case, in step S23 which replaces step S16, the tank 4 is rotated at a speed of 100 [rpm] even at a low speed, and then the process proceeds to step S17. Further, if it is determined in step S17 that the vibration of the tank 4 is equal to or more than the predetermined value, the tank 4 is set to the above-mentioned 1
The dehydration rinsing process is continued by rotating at a speed of 50 [rpm] lower than 00 [rpm] (step S24).

Then, again, it is judged from the vibration detection signal from the vibration sensor 27 whether or not the vibration of the tank 4 is a predetermined value or more (step S25), and here, the vibration of the tank 4 is predetermined. If it is determined that the value is not greater than or equal to the value, step S
Similar to 18, it is determined whether or not 1 [minute] has elapsed (step S26), and while it is determined that it has not elapsed, the process returns to step S24, but if it is determined that it has elapsed, the process proceeds to step S19. . If it is determined in step S25 that the vibration of the tank 4 is equal to or larger than the predetermined value, the execution of the dehydration rinsing step is stopped and the process proceeds to step S11 to execute the rinsing rinsing step.

That is, in the case of this, when the tank 4 is rotated at a low speed during the dehydration rinsing process and the vibration sensor 27 detects that the vibration of the tank 4 is above a predetermined value, , The rotation speed of the tank 4 is further reduced to continue the dehydration rinsing process.
By the low speed rotation of the tank 4, the occurrence of water splash can be further reduced,
In addition, in this case, since the dehydration rinsing process is continued as much as possible, the amount of water used can be saved as much as possible.

The present invention is not limited to the embodiments described above and shown in the drawings. Particularly, the specific rotation speed of the tank 4, the specific time of each operation, the specific amount of water, etc. are as described above. Alternatively, the tank 4 may have a dehydration hole 11 as an opening for dehydration not only in the upper portion but also in the entire portion, and water may be stored in the trough 2 through it. In addition, the invention may be appropriately modified and implemented without departing from the scope of the invention.

[0038]

The washing machine for combined use of dehydration of the present invention is as described above, and has the following effects. Firstly, an inner lid is provided on the upper part of the tub, and during the rinsing process, water is poured into the tub through the inner lid to spin the tub for dewatering to rinse the laundry, thereby enabling the rinsing process to be performed. If the vibration of the tank is judged to be a predetermined value or more from the detection result by the vibration detecting means when the tank is rotated, the dehydration means is provided. By stopping the execution of the rinsing process and instead storing water in the tub to generate a water flow to rinse the laundry, the rinsing process is executed, and even when the vibration of the tub is large, the water splashes violently. It is possible to perform sufficient rinsing in terms of performance without causing

Secondly, the vibration of the tank is judged during the dehydration step immediately after the washing step, and when the vibration of the tank is judged to be equal to or more than a predetermined value at that time, the rinse is performed during the subsequent rinse step. By stopping the execution of the stroke and executing the rinsing stroke, it is possible to prevent the occurrence of severe water splash.

Thirdly, the bath is rotated at a low speed during the dehydration rinsing step, and when the vibration of the bath is judged to be a predetermined value or more from the detection result of the vibration detection means at that time, the spin rinse is performed. By stopping the execution of the stroke and executing the rinsing stroke, the occurrence of water splash can be further reduced.

Fourthly, when the tank is rotated at a low speed during the dehydration rinsing step and the vibration of the tank is judged to be a predetermined value or more from the detection result by the vibration detecting means at that time, the tank is rotated. By further reducing the rotation speed and continuing the dehydration rinsing process, the occurrence of water splash can be further reduced, and the rinsing can be performed while saving the amount of water used as much as possible.

[Brief description of drawings]

FIG. 1 is a flowchart for explaining the operation of the first embodiment of the present invention.

[Fig. 2] Side view of the entire fracture

FIG. 3 is a schematic electrical configuration diagram.

FIG. 4 is a diagram showing the relationship between the vibration amplitude of the tank and the output voltage of the vibration sensor.

FIG. 5 is a diagram showing execution contents of a dehydration rinsing process.

FIG. 6 is a diagram showing execution contents of a trial rinse process.

FIG. 7 is a diagram showing respective rinsing performances of a dehydration rinsing process and a storing rinsing process.

FIG. 8 is a characteristic diagram showing a different example of the vibration detecting means.

FIG. 9 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 10 is a view corresponding to FIG. 1 showing a third embodiment of the present invention.

[Explanation of symbols]

4 is a tank, 8 is a motor, 9 is a drive mechanism, 13 is an inner lid, 16
Is a water passage hole, 21 is a water supply valve, 22 is a water supply device, 23 is a microcomputer (control means), and 27 is a vibration sensor (vibration detection means).

Claims (4)

[Claims] 1. An inner lid is provided at the upper part of the tub, and during the rinsing process, the tub is rotated while pouring water into the tub through the inner lid to perform dehydration, so that the laundry can be rinsed to be dehydrated and rinsed. In addition, when the vibration of the tank is judged to be a predetermined value or more from the detection result by the vibration detecting means when the tank is rotated, the vibration detecting means for detecting the vibration of the tank is provided. In addition, it has a control means for stopping the execution of the dehydration rinsing step and storing water in the tub instead to generate a water flow to rinse the laundry to perform the rinsing step. Washing machine. 2. The control means determines the vibration of the tank during the dehydration step immediately after the washing step, and when the vibration of the tank is determined to be equal to or more than a predetermined value at that time, the dehydration is performed during the subsequent rinse step. The washing machine for combined use of dehydration according to claim 1, wherein execution of the rinsing step is stopped and control is performed to execute the rinsing step. 3. The control means performs the rotation of the tank during the dehydration rinsing process at a low speed, and when the vibration of the tank is determined to be a predetermined value or more from the detection result of the vibration detection means at that time, the dehydration is performed. The washing machine for combined use of dehydration according to claim 1, wherein execution of the rinsing step is stopped and control is performed to execute the rinsing step. 4. An inner lid is provided at the upper part of the tub, and during the rinsing process, water is poured into the tub through the inner lid to spin the tub at a low speed to perform dehydration, thereby rinsing the laundry to perform a dehydration rinsing process. When it is determined that the vibration of the tank is equal to or more than a predetermined value, the vibration detection means for detecting the vibration of the tank is provided, and the vibration detection means detects the vibration of the tank during the dehydration rinsing process. In addition, the washing machine for combined use with dehydration is characterized by further comprising control means for controlling the rotation speed of the tub to be further reduced to continue the dehydration rinsing process.