JPH08196775A - Fully automatic washing machine - Google Patents

Abstract

(57) [Summary] [Purpose] The laundry attached to the inner peripheral surface of the tub can be quickly and effectively removed during the rinsing process after the dehydration process, which is effective without prolonging the rinsing process time. Make it possible to rinse. [Structure] A jet port 15 is provided on the inner peripheral side of the tank 4 so as to surround the front surface, the rear surface, both side surfaces, and the upper surface, and eject the water discharged by the pump blade 10 on the back side of the stirring body 5 toward the inside of the tank 4. The water passage 12 is provided so that the water attached to the inner peripheral surface of the tub 4 can be quickly peeled off by the water ejected from the ejection port 15 so that the laundry can be rinsed in this state. Further, the water passage 12 surrounding the periphery other than the jet outlet 15 does not leak the water discharged by the pump blade 10 to the jet outlet 15, and therefore,
It can be guided without dropping the pressure, and further, the spout 1
By orienting 5 toward the inside of the tub 4, it can be vigorously ejected toward the inside of the tub 4, and the laundry can be peeled off more effectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic washing machine which performs operations in the order of washing, dehydration and rinsing.

[0002]

2. Description of the Related Art Conventionally, fully automatic washing machines have been provided with a tub for washing and dewatering, in which washing, dewatering and rinsing steps are performed in this order. In this case, the detergent solution contained in the laundry in the washing process is shaken off in the subsequent dehydration process, and the rinsing process is performed in this state, so that there is an advantage that rinsing can be performed efficiently.

However, since the laundry sticks to the inner peripheral side surface of the tub in the dehydration process and cannot be easily peeled off even in the subsequent rinsing process, the rinsing cannot be effectively performed, and therefore the rinsing process time is extended. By doing so, the rinsing effect is improved.

[0004]

However, even if the rinsing effect is increased as described above, if the rinsing stroke is made longer, the time until the end of operation becomes longer and the laundry is damaged. It had the problem of increasing the number.

The present invention has been made in view of the above circumstances, and an object thereof is to effectively rinse laundry after the dehydration process without increasing the time of the rinse process. To provide an automatic washing machine.

[0006]

In order to achieve the above object, in a fully automatic washing machine of the present invention, first, a washing / dehydrating tub and water in the tub are agitated to generate a washing water flow. A stirrer to be generated and a drive device that selectively drives the stirrer and the tank, and the operation is performed in the order of steps of washing, dehydration, and rinsing, and is provided on the back side of the stirrer. Pump vanes and the front, rear, and
A water channel is provided which surrounds both side surfaces and an upper surface, and has an ejection port for ejecting water discharged by the pump blade, which is directed inward of the tank at a position lower than the maximum set water level during the washing process. Is characterized by.

In the fully automatic washing machine of the present invention, the second
In addition, a washing / dehydrating tub having a dehydration opening only in the upper part, an agitator for agitating water in the tub to generate a washing water flow, and a drive device for selectively driving the agitator and the tub And an inner basket having a large number of water passage holes arranged in close proximity to the inner peripheral surface of the tank, and performing operations in the order of washing, dehydration, and rinsing. The pump blade provided on the back side of the tank and the gap between the tank and the inner basket, which is provided below the maximum set water level during the washing process. And a water channel which is directed inward of the tank.

In this case, the water passage hole of the inner basket may be used as the jet outlet of the water channel. Further, it is preferable to provide a plurality of water channels, and it is also possible to provide them in multiple stages. Further, the drive time of the agitator at least in the initial stage of the rinsing process during the rinsing process may be set longer than that during the rinsing process, and the load applied to the driving device during the rinsing process is detected and the detected load. It is also possible to drive the stirrer for a time longer than the drive time of the stirrer during the washing process until the value reaches a predetermined value.

[0009]

[Advantage] According to the above means, the water adhering to the inner peripheral surface of the tub can be quickly peeled off by the water ejected from the outlet of the water channel during the rinsing process after the dehydration process, and the rinsing can be performed in this state. Rinsing can be done effectively without lengthening the stroke time.

Further, in this case, since the water channel surrounds the periphery other than the jet port, the water discharged by the pump blades is guided to the jet port without leaking, and thus the pressure is not dropped, and the water is urged from the jet port. It can be spouted well, and further, since the spout is directed toward the inside of the tub, it can be spouted toward the inside of the tub to more effectively peel off the laundry.

Further, in particular, in the case where the water channel is provided by partitioning the space between the tank and the inner basket, the water channel can be formed by utilizing the space, and accordingly, the structure can be rationalized. it can. Further, in that case, if the water passage hole of the inner basket is used as the jet outlet of the water passage, the water passage hole of the inner basket can be used as the jet outlet of the water passage, so that the structure can be made more rational.

On the other hand, in the case where the water channels are provided in a plurality or in multiple stages, the washing water stuck to the inner peripheral side surface of the tub can be more complicatedly sprayed with the fountain, so that the laundry can be peeled off more effectively. Can be done. In addition, if the drive time of the stirring body at least in the initial stage of the rinsing process during the rinsing process is set longer than that during the rinsing process, the amount of fountain can be increased by that much, and the peeling of the laundry is even more effective. You can

Since the rinsing process is in progress, the load applied to the drive device during rinsing is detected, and the stirring body is driven for a longer time than the driving time of the stirring body during the washing process until the detected load reaches a predetermined value. With this configuration, the laundry can be removed more effectively, and
The operation for peeling the laundry can be performed without waste.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, FIG. 2 shows the entire structure of a fully automatic washing machine, in which a tub 2 is arranged in an outer box 1, and a tub 4 having a large number of dehydration holes 3 in the tub 2 for the purpose of washing and dewatering is provided in the entire peripheral side wall. Are installed. An agitator 5 for agitating the water in the tub 4 to generate a washing water flow is arranged at the inner bottom of the tub 4, and the agitator 5 and the tub 4 are selected at the outer lower part of the tub 4. A drive device 7 mainly composed of a motor 6 for mechanically driving is disposed, and a drain valve 8 for discharging water in the tub 2 (in the tank 4) to the outside of the machine.
And a drain hose 9 is provided.

As shown in FIG. 1, a pump blade 10 is provided on the back side of the stirring body 5, while a water absorption hole 11 communicating with the trough 2 is formed around the center of the bottom of the tank 4. There is. A water channel 12 is provided on the inner side of the tank 4, for example, the tank 4
The peripheral side wall 4a surrounds the rear surface (outer surface), the rib 13 integrated with the peripheral side wall 4a of the tank 4 surrounds the upper surface and the left and right side surfaces, and the cover 14 attached separately surrounds the front surface (inner surface) to form a plurality. And all of them are the agitator 5 described above.
Extending upward from the bottom of the tank 4 facing the pump blade 10 of the above, and directing the jet outlets 15 inwardly of the tank 4 at positions below the maximum (“high”) set water level H during the washing process described later. I have it. In addition, this waterway 12 is shown in FIG.
The height (position of the spout 15) is different.

Now, in the case of the configuration as described above,
The operation is performed in the order of the stroke shown in FIG. Therefore, the "washing" step is first executed. In this "washing" step, water is supplied into the tank 4 (in the trough 2) through the water supply valve (not shown) to store water, and then the stirring unit 5 is driven by the drive device 7. It is rotated (reversed) intermittently, and finally drained through the drain valve 8.

Next, in the "dewatering" step, the driving device 7 rotates the tub 4 in one direction at a high speed, and the centrifugal force generated by the driving device 7 shakes off the detergent liquid contained in the laundry from the dehydration hole 3 to remove it. Although it is discharged through the drain valve 8, the laundry is stuck to the inner peripheral side surface of the tub 4 at this time.

Next, in the "rinsing" step, while the water is supplied into the tank 4 through the water supply valve, the driving device 7 rotates the tank 4 at a low speed in one direction, and then the high speed rotation of the tank 4 is repeated a plurality of times. After performing "shower rinsing" twice, for example (rinsing, rinsing), after supplying water into the tank 4 through the water supply valve to store water, the agitator 5 is intermittently rotated (reversed) by the drive device 7, and finally. Perform "reserve rinsing" (rinsing) of the contents to be drained through the drain valve 8.
At the time of this “rinsing and rinsing”, the pump blade 10 of the stirring body 5 sucks the water in the trough 2 through the water suction hole 11, discharges it into the water channel 12, and ejects it from the ejection port 15. The water jetted from the jet outlet 15 quickly removes the laundry stuck to the inner peripheral side surface of the tub 4 as described above, and rinses in this state.

The spouting of water from the spout 15 of the water channel 12 is also performed during the "washing" step, which has the same operation content as the "rinsing and rinsing". During the "washing" step, the spout 15 is ejected.
The spouting of water from the water has the effect of promoting the dissolution of the detergent and complicating the movement of the laundry to enhance the washing effect.

In the last "dewatering" step, the drive unit 7 rotates the tub 4 in one direction at a high speed as in the previous "dewatering" step. Is shaken off from the dehydration hole 3 and discharged through the drain valve 8.

As described above, according to this structure, during the "rinsing" step after the "dehydration" step, water is ejected from the ejection port 15 of the water channel 12 to wash the laundry stuck to the inner peripheral side surface of the tub 4. It can be quickly peeled off and rinsed in this state, so that it can be effectively rinsed without prolonging the time of the rinsing stroke, thus shortening the time until the end of operation and damaging the laundry. Can be reduced.

Moreover, in that case, the water channel 12 is provided with the jet port 15
Since it surrounds the surroundings other than the pump blade 10
The water discharged by the nozzle can be guided to the jet outlet 15 without leaking, and thus can be guided without dropping the pressure, and can be vigorously jetted from the jet nozzle 15. In addition, the jet nozzle 15 is directed inward of the tank 4. By doing so, it is possible to spray water toward the inside of the tub 4 and more effectively remove the laundry.

In contrast to the above, FIGS. 4 to 6 show a second embodiment of the present invention, and only the differences from the first embodiment will be described, in which the tank 16 serves as a dehydration opening. Hole 1
7 is provided only on the upper portion, and therefore, during the "washing" process and the "rinsing" process, water is stored only in the tank 16 and not in the trough 2 to save water. or,
With this, an inner basket 19 having a large number of water passage holes 18 and a ring-shaped bottom cover 20 are arranged in the tank 16 so as to be closely opposed to the inner peripheral surface of the tank 16, whereby
During the "dewatering" step, water contained in the laundry is guided from the water passage hole 18 through the gap between the inner basket 19 and the tub 16 to the dehydration hole 17 without being disturbed by the laundry and is discharged.

Then, ribs 21 are formed in an inverted U shape shown in FIGS. 5 and 6 on the inner peripheral side of the tank 16, and the inner basket 19 and the bottom cover 20 are brought into contact with the ribs 21.
Similar to the water channel 12 of the first embodiment, a water channel 22 surrounding the front surface, the rear surface, both side surfaces, and the upper surface is provided. Therefore, in this case, the ejection port 23 is a part of the water passage hole 18 of the inner basket 19.
Both of them are located below the maximum set water level H during the washing process and are directed inward of the tank 4.

Therefore, also in this case, the water discharged from the pump blade 10 of the stirring body 5 is discharged from the jet port 23 (water passage hole 18) through the water passage 22 and is jetted from the jet port 23. With the water, the laundry stuck to the inner peripheral side surface of the tub 4 can be quickly peeled off, and rinsing can be effectively performed in this state. Also, especially in the case of this, tank 4
The water channel 22 can be constructed by utilizing the gap between the inner basket 19 and the inner basket 19, and the structure can be reasonably constructed accordingly. Furthermore, the water passage hole 18 of the inner basket 19 can also be used for the jet outlet 23 of the water channel 22, and the structure can be made more rational.

Notches 24 are formed in the uppermost corners of the ribs 21 to ensure water permeability during the "dewatering" process.

FIG. 7 shows a third embodiment of the present invention.
Ribs 25 and 26 are formed on the inner basket 19 and the bottom cover 20, respectively, and a water shield cover 27 is attached between the ribs 25 of the inner basket 19 by screws 28,
This shows a structure in which a water channel similar to the above-mentioned water channel 22 is formed by bringing these into contact with the inner peripheral surface of the tank 4, and even in this case, the same operational effect as in the second embodiment can be obtained. You can

FIGS. 8 and 9 show the fourth and fifth embodiments of the present invention, in which the water passage 12 of the first embodiment structure and the water passage 22 of the second embodiment structure are provided in the first embodiment and the second embodiment, respectively. The number is larger than that of the embodiment, and the heights thereof are different from each other and provided in multiple stages. By doing so, a more complicated fountain can be applied to the laundry stuck to the inner peripheral side surface of the tub 4. It can be applied and the laundry can be peeled off more effectively.

FIG. 10 shows a sixth embodiment of the present invention. The driving time of the stirring body 5 at the initial stage (for example, 30 seconds) of rinsing (for example, 30 seconds) during the rinsing process is set to 2.0 seconds each, and thereafter. The driving time of the stirrer 5 and the driving time of the stirrer 5 during the washing process are set to be longer by 1.7 seconds, and by doing so, the water channel (12, It is possible to increase the amount of water spouted from 22), and the peeling of the laundry can be performed more effectively as well.

11 to 15 show a seventh embodiment of the present invention. In this case, a microcomputer 29 is provided as a control means to which various operation signals are inputted from an operation section 30 which is composed of various operation switches. A water level sensor 31 that detects the water level in the tub 2 (in the tank 4) while inputting
Further, the water level detection signal is input, and the rotation detection signal (load detection signal) is input from the rotation sensor 32 which is the load detection means for detecting the rotation speed of the motor 6 as the load of the drive device 7.

Further, based on those inputs and the control program stored in advance, the microcomputer 29 gives a drive control signal to the drive circuit 32 for driving the water supply valve, the motor 6 and the drain valve 8. Has become.

In this case, however, when rinsing (rinsing) is started because the rinsing process is in progress, the microcomputer 29, as shown in FIG. The driving of the stirring body 5 by time is started, and the rotation detection signal from the rotation sensor 32 is taken in (step S1). Then, thereafter, it is determined whether 10 seconds have elapsed (step S2), and it is determined whether the rotation detection signal from the rotation sensor 32 fetched at the time when it has been determined has reached a predetermined value. (Step S3).

Here, FIG. 13 to FIG. 15 show “high”,
The general transition of the rotation detection signal at each set water level of "medium" and "low" and the "predetermined value" are shown. In both cases, the agitator is used when the laundry is attached to the inner peripheral surface of the tub 4. Since 5 almost only agitates the water in the tub 4, the load is light, the rotation detection signal is large, and as the laundry is peeled from the inner peripheral side surface of the tub 4, the agitator 5 also agitates the laundry. As a result, the load becomes heavier and the rotation detection signal becomes smaller. However, the higher the water level, the greater the amount of laundry, so the degree of change is large and the absolute level is also high. For this reason, the "predetermined value", which is the value at which it can be determined that the laundry has been peeled from the inner peripheral side surface of the tub 4, is set to be larger as the water level is higher.

Now, when it is determined in step S3 that the rotation detection signal has not reached the "predetermined value", the process returns to step S1 and the stirring body 5 is continuously driven for a long time of 2.0 seconds each. At the same time, the acquisition of the rotation detection signal from the rotation sensor 32 is continued.

On the other hand, if it is determined in step S3 that the rotation detection signal has reached the "predetermined value", the driving of the stirring body 5 is switched to the normal time of 1.7 seconds (step S4). After that, it is judged whether or not the trial rinsing end time has been reached (step S5), and when it is judged that the time has been reached, drainage is carried out (step S6), and the final "dehydration"
The stroke is executed (step S7), and the entire operation is completed.

According to this method, the stirrer 5 is driven for a longer time than the drive time of the stirrer 5 during the washing process until it can be determined that the laundry stuck to the inner peripheral side surface of the tub 4 has peeled off. Not only can the laundry be removed effectively, but also the operation for removing the laundry can be performed efficiently and efficiently.

[0037]

The fully automatic washing machine of the present invention is as described above, and has the following effects. Firstly, a washing and dewatering tub, an agitator for agitating water in the tub to generate a washing water flow, and a drive device for selectively driving the agitator and the tub, In the case where the operation is performed in the order of the dehydration and rinsing strokes, the pump blade provided on the back side of the agitator and the pump provided on the inner peripheral side of the tank so as to surround the front surface, the rear surface, both side surfaces, and the upper surface. By installing a water channel that has an outlet for ejecting the water discharged by the blades inward of the tank at a position below the maximum set water level during the washing process, the inside of the tank during the rinsing process after the dehydration process is equipped. The laundry stuck to the peripheral side can be quickly and effectively peeled off, and it can be effectively rinsed without increasing the time of the rinsing stroke, shortening the time until the end of operation and damaging the laundry. Can be reduced.

Secondly, a washing / dehydrating tub having a dehydration opening only in the upper portion, an agitator for agitating water in the tub to generate a washing water flow, and the agitator and the tub are selectively used. A driving device for driving the inner basket of the tank, and an inner basket having a large number of water passage holes arranged in close proximity to the inner peripheral surface of the tank.
In the case where the operation is executed in the order of washing, dehydration, and rinsing, the water discharged by the pump blade provided by partitioning the gap between the pump blade provided on the back side of the stirring body and the tank and the inner basket. As described above, by equipping the water passage with the spout that ejects the water at a position lower than the maximum set water level during the washing process, the inner side surface of the tank during the rinsing process after the dehydration process. The laundry attached to the can be quickly and effectively peeled off and the rinse can be effectively rinsed without increasing the time of the rinsing stroke. It can be constructed by utilizing voids, and the structure can be rationalized.

Thirdly, since the water passage hole of the inner basket is used as the jet outlet of the water passage, the water passage hole of the inner basket can be used as the jet outlet of the water passage, and the structure can be made more rational. . Fourthly, by providing a plurality of the above water channels,
The laundry can be peeled off more effectively.

Fifth, by providing the water channels in multiple stages, the laundry can be peeled off more effectively. Sixth, by setting the driving time of the agitator at least in the initial stage of the rinsing process during the rinsing process to be longer than that during the rinsing process, the laundry can be more effectively peeled off.

Seventh, since the load applied to the driving device during rinsing is detected because the rinsing process is being performed, the stirrer having a time longer than the drive time of the stirrer during the washing process is detected until the detected load reaches a predetermined value. By performing the driving, not only the laundry can be effectively peeled off, but also the operation for peeling the laundry can be efficiently performed without waste.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a main portion showing a first embodiment of the present invention.

[Fig. 2] Overall vertical cross-sectional view

[Fig. 3] Driving process chart

FIG. 4 is an enlarged view of a portion corresponding to FIG. 1 showing a second embodiment of the present invention.

5 is a perspective view of FIG. 4 part.

FIG. 6 is a perspective view of a part of FIG.

FIG. 7 is a view corresponding to FIG. 6 showing a third embodiment of the present invention.

FIG. 8 is a view corresponding to FIG. 1 showing a fourth embodiment of the present invention.

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

FIG. 10 is a time chart showing a sixth embodiment of the present invention.

FIG. 11 is a schematic electrical configuration diagram showing a seventh embodiment of the present invention.

FIG. 12 is a flowchart for explaining the operation.

FIG. 13 is a characteristic diagram No. 1

FIG. 14 is a characteristic diagram No. 2

FIG. 15 is a characteristic diagram 3

[Explanation of symbols]

4 is a tank, 5 is an agitator, 7 is a drive unit, 10 is a pump blade, 12 is a water channel, H is the maximum set water level during the washing process, 15
Is a spout, 16 is a tank, 17 is a dehydration hole (dehydration opening),
18 is a water passage hole, 19 is an inner basket, 22 is a water channel, 23
Is a jet port, 29 is a microcomputer (control means),
Reference numeral 32 denotes a rotation sensor (load detection means).

Claims (7)

[Claims] 1. A washing machine equipped with a washing / dehydrating tank, an agitator for agitating water in the tank to generate a washing water flow, and a drive device for selectively driving the agitator and the tank. In the case where the operation is performed in the order of strokes of dehydration and rinsing, the pump blade provided on the back side of the stirring body and the front, rear, both side surfaces, and the top surface provided on the inner peripheral side of the tank are provided. A fully automatic washing machine, comprising: a water channel having an outlet for ejecting water discharged by a pump blade, the water channel being directed inward of a tub at a position below a maximum set water level during a washing process. 2. A washing / dehydrating tub having a dehydration opening only in the upper portion, an agitator for agitating water in the tub to generate a washing water flow, and the agitator and the tub are selectively driven. And a drive device and an inner basket having a large number of water passage holes arranged in close proximity to the inner peripheral surface of the tank,
In the case where the operation is executed in the order of dehydration and rinsing,
A pump blade provided on the back side of the agitator and a space between the tank and the inner basket, which is provided to partition the space between the tank and the inner basket, ejects the water discharged from the pump blade, and below the maximum set water level during the washing process. A fully automatic washing machine, characterized in that it has a water channel at the position of which the water channel is directed inward of the tub. 3. The fully automatic washing machine according to claim 2, wherein the water passage hole of the inner basket is a jet outlet of the water channel. 4. The fully automatic washing machine according to claim 1, wherein a plurality of water channels are provided. 5. The fully automatic washing machine according to claim 4, wherein the water channels are provided in multiple stages. 6. The fully automatic washing machine according to claim 1, wherein the drive time of the stirring body at least in the initial stage of the rinsing process during the rinsing process is set longer than that during the rinsing process. 7. The load applied to the drive device during rinsing is detected during the rinsing process, and the stirring body is driven for a time longer than the driving time of the stirring body during the washing process until the detected load reaches a predetermined value. The fully automatic washing machine according to claim 1 or 2, characterized in that.