JPH0241358B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method for operating a fully automatic washing machine, and more specifically, a method for operating a fully automatic washing machine that employs a so-called short cycle reversal washing method in which no vortex is formed in the washing water flow. The present invention relates to a method, and particularly to a method for controlling the drive of a rotor at the start of a washing and rinsing process.

[Prior art]

Fully automatic washing machines are designed to automatically perform washing, rinsing, and spin-drying steps according to preset time cycles.

In the washing operation, the rotary blades at the bottom of the washing tank are rotated by a motor through a speed reduction mechanism to create a water stream, which agitates the items to be washed and applies mechanical force to the fabric to remove dirt. It is becoming more and more common. The detergency is achieved by the separation of dirt by the mechanical force and the chemical action of the detergent, and the detergency of only one is insufficient.

In a fully automatic washing machine, after adding the items to be washed and detergent without any water in the machine, the lid is closed and the start switch is operated.
The feature is that once set, the washing machine can automatically continue the washing process.

However, conventional rotor blades are difficult to operate at high speeds (e.g.
400rpm. Below, the numbers in the box are examples of specific products) After rotating in one direction for a long time (23 seconds),
It pauses for a certain period of time (3 seconds), then reverses itself to create a stream of water that rotates for the same period of time.

With this control method, a strong vortex is created, and the items to be washed are drawn into the vortex by the water flow, so the detergent dissolves quickly in the early stages of washing, and the items to be washed are immersed in water at an early stage, allowing the items to be washed to be washed in a relatively short time. You can get away with it.

On the other hand, a new cleaning method, the so-called short-cycle reversal cleaning method, rotates the rotor in one direction at low speed (190 rpm) for a short period of time (0.8 seconds), then pauses for a certain period of time (0.5 seconds), and then reverses the rotation. In the washing method that rotates for a short period of time, no vortex is formed in the water flow to be washed, and a washing effect similar to shaking washing or massaging is obtained. Since it does not get tangled, it has the advantage of less damage to the cloth and less uneven washing.

However, according to the above-mentioned short-cycle inversion cleaning method, no vortex is formed in the water flow to be washed, so if the water flow is a weak water flow when the items to be washed are poured into the washing machine at the rated rate, the detergent will not dissolve quickly. ,
There was also the problem that some of the items to be washed floated on the water surface and took time to submerge, making it impossible to use the designated washing time effectively enough to remove stains from the items to be washed. .

That is, if the dissolution of the detergent is delayed, cleaning power due to chemical action cannot be obtained, and efficient cleaning cannot be performed only through mechanical action.
Further, since the items to be washed that are exposed above the water surface are not sufficiently cleaned within a predetermined period of time, an efficient cleaning effect cannot be obtained in this case as well.

In addition, in the short period reversal cleaning method in which no vortex is formed in the water stream to be washed, by utilizing the conventional technology in which a vortex is formed in the water stream to be washed at the beginning of the washing and rinsing process, as shown in Japanese Patent Publication No. 48-21274,
If a strong water flow is operated in one direction for a predetermined period of time, a submergence effect can be observed in which the items to be washed floating on the surface of the water are forcibly drawn into the water. The object to be washed and the object to be washed rotate together in the tank, and the relative speed becomes almost zero, making it impossible to expect a cleaning effect due to the washing liquid passing between the fibers of the object to be washed.

[Aim of the invention]

The purpose of the present invention is to quickly dissolve detergent in a short-cycle reversal washing method in which no vortices are formed in the water flow to be washed, and also to improve the submersion effect of forcibly drawing the items to be washed into the water, thereby improving the washing efficiency. This improves the cleaning process compared to the conventional short-cycle inversion cleaning method, especially when dissolving the detergent quickly and cleaning the inside of the machine lid by splashing water when the items to be washed are forcibly drawn into the water. To provide a method for operating a fully automatic washing machine capable of eliminating the problem of water hitting the washing machine and splashing on the inside of the lid, falling from a space between a washing machine outer frame and a water receiving tank and wetting the floor surface. It is in.

[Summary of the invention]

The purpose is to provide a water receiving tank that incorporates a rotary blade and a basket driven by a motor and is suspended from an outer frame with an opening at the bottom for water supply and drainage;
It has a timer that automatically controls the rinsing and dehydration steps according to a predetermined time cycle,
and a method for operating a fully automatic washing machine in which the motor is equipped with a fan for cooling the motor and the washing process is continued in a short-period reversal cycle in which no vortex is formed in the washing water flow, in which a short pause period is inserted at the start of the washing and rinsing processes. When the water to be washed and the items to be washed are rotated twice in the same direction with strong water flow, and the first rotation is to reverse the washing water and the items to be washed which are rotating in one direction, the water to be washed and the items to be washed are rotated by the reversing action. This is a short period of time that stops the flow and does not cause splashing of the water to be washed, and the second time is
When the washing water and the washing items are rotated twice in the opposite direction after a short rest period, and the first time is to reverse the washing water and the washing items that are rotating in one direction, The reversal action stops the flow of the water to be washed and the items to be washed, and is a short period of time that does not cause splashing of the water to be washed, and the second time is a cycle operation with a strong water flow that is longer than the first time. This is accomplished by repeating this repeatedly, and then continuing the operation in a specified basic cycle of short-period reversals.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for operating a fully automatic washing machine according to the present invention will be described below with reference to the drawings.

FIG. 1 is an open cross-sectional view of a fully automatic washing machine used to carry out the operating method for a fully automatic washing machine according to an embodiment of the present invention, FIG. 2 is an electric circuit diagram thereof, and FIGS. 3 and 4 are: FIG. 5 is an operation flow diagram showing the operating method of the fully automatic washing machine according to the above embodiment, and FIG. 5 is an operation signal diagram thereof.

First, in Fig. 1, 1 is an outer frame with an opening at the bottom, 2 is a top cover that covers the upper surface of the outer frame 1, 3 is a corner plate, and the corner plate 3 is fixed to the upper four corners of the outer frame 1, and is attached to a water receiving tank. 4 is supported by hanging rods 5 at four corners. A vibration-proof spring 6 is attached to the hanging rod 5 and absorbs the vibration of the water receiving tank 4 during dewatering. 7 is a basket that rotates at high speed during dehydration to centrifugally dehydrate the items to be washed.

8 is a motor, and the power of the motor 8 is supplied by belts 9,
Via the pulley 10, it is transmitted to the clutch speed reducer 11 and decelerated, and the rotor blade 12 is rotationally driven.

Note that the motor 8 is equipped with a fan (not shown) for cooling the motor 8, as in conventional washing machines of this type.
It is equipped with

14 is a water injection hose, 15 is a water injection port for supplying water from a faucet into the water tank 4, and 16 is an electronic timer, which will be explained in detail in FIG. 2 below.
Instructs and controls the operation of electric components such as the motor 8 and the water supply valve 13.

Further, the motor 8 rotates in both forward and reverse directions, and repeatedly drives the rotary blade 12 to rotate in the forward and reverse directions.

In FIG. 2, 17 is a phase advance capacitor for the motor 8, 18 is a drain valve, 19 is a power outlet, 20 is a power switch, 21 is a neon lamp,
22 is a connector.

23 is a pressure switch, 24 is a safety switch, 2
5 is an instruction control section, and the instruction control section 25 is constituted by an LSI element having a calculation function such as a microcomputer. 26 is a progress display section composed of a light emitting diode, 27 is a power supply circuit section,
The power supply circuit unit 27 converts alternating current (AC) into direct current (DC) to generate power for the electronic timer 16 .

An oscillation circuit section 28 supplies a clock to the instruction control section 25 and an oscillation frequency to the buzzer 29.

30 is an input signal processing circuit;
The input signal is transmitted to the instruction control unit 25 via the input signal bus line 31. Reference numeral 32 denotes an input switch section, and the signal input to the switch section 32 is transmitted to the instruction control section 25 via the signal bus line 31 as well. Reference numeral 33 is an output signal bus line for transmitting signals from the instruction control section 25 to the progress display section 2.
6. Transmit to the drive unit 34.

Moreover, the line 35 passes through the connector 22,
To the water supply valve 13, a line 36 is connected to the normal rotation side of the motor 8, a line 37 is connected to the reverse rotation side, and a line 38 is connected to the drain valve 18.

In the above configuration, when an operation instruction is input to the input switch section 32, the instruction control section 25 determines the signal of the pressure switch 23, and if the water receiving tank 4 is not full of water, the output circuit of the instruction control section 25 determines the signal from the pressure switch 23. The output signal is passed through the bus line 33 and amplified by the driver 34.
Water supply valve 1 from line 35 after switching process
3 is issued, and water is supplied into the water receiving tank 4 from the water injection port 15 via the water injection hose 14.

When the water in the water tank 4 reaches a predetermined water level, the signal of the pressure switch 23 is switched, the water supply valve 13 is de-energized, and the washing process begins.

As a specific example, the washing time can be up to about 12 minutes and the rinsing time can be up to about 3 minutes, but depending on the degree of dirt, the operation can be adjusted to a shorter time.

Therefore, since the present invention relates to washing and rinsing during the washing process, the following description will be limited to washing and rinsing.

FIG. 3 is a flowchart showing the operation of the washing and rinsing subroutines.

When a wash or rinse step is entered,
The operating time is set.

Next, check whether the pressure switch 23 is ON,
If not, turn on the water supply valve 13.

When water accumulates in the water tank 4 and reaches a predetermined water level, the pressure switch 23 is turned on, so the water supply valve 13 is turned on.
It turns OFF and the process moves to the inversion subroutine.

When the processing in the reversal subroutine is completed, the process moves to one of the reversal subroutines', .

FIG. 4 is a flowchart showing the operation of the inversion subroutine.

First, the subtraction timer mask for updating the washing time is unmasked and subtraction counting is started. The subtractable number is the operating time set at the beginning of FIG.

Here, the illustrated time T is as follows.

T = (operation time) - (subtraction timer value) This indicates the execution time of washing or rinsing, and the operation of the inversion subroutine continues until this value reaches T ₀ (duration of the first water flow). Execute.

Therefore, a to c in FIG. 5 show the ON/OFF signals of the motor 8 in the reversal subroutine, where a indicates a strong water flow, b indicates a weak water flow, and c indicates a medium water flow. In the figure, A is a forward rotation signal, which is transmitted to the motor 8 through a line 36, and B is a reverse rotation signal, which is transmitted to the motor 8 through a line 37.

In other words, the operation of the reversal subroutine, which is a strong water flow, is performed for a short time t1 of about 0.2 seconds as the motor operation time tM, as shown in Fig. 5a, for example.
There is a long time t2 of about 2 seconds, and a motor stop time tS of about 0.5 seconds.

First, it rotates in one direction for a short period of time t1, and after a rest period of time tS, it rotates again in the same direction for a long period of time t2.

Next, after a pause of time tS, it rotates in the opposite direction for a short time t1, and again after a pause of time tS, it rotates in the same direction as before for a long time t2. only rotates.

Thereafter, the same operation is repeated, and in this way, the operation of the reversal subroutine, which is a strong water flow, continues until the previous time _T0 , which has been previously stored.

When the time T becomes equal to T ₀ , the processing of the inversion subroutine, which is a strong water flow, is completed, and the process moves to the washing or rinsing subroutine, ie, the inversion subroutine ', shown in FIG.

The operations of the inversion subroutines ′, , are as shown in a, b, and c of FIG. 5, respectively.
In the illustrated embodiment, the operation of the reversal subroutine' is the same as that of the aforementioned reversal subroutine (strong water flow reversal subroutine), that is, it continues to perform the same operation.

Then, the process of the inversion subroutine ' or ' is executed until the operating time set at the beginning of FIG. 3 ends.

In this embodiment, after the reversal subroutine ends, a subroutine called reversal subroutine ′, . Is possible.

The present invention is as described above, and the present invention provides a method for operating a fully automatic washing machine in which the washing process is continued in a short-period reversal cycle in which no vortex is formed in the water flow to be washed. , repeat the cycle operation with strong water flow by rotating twice in the same direction with strong water flow, then taking a short pause, then rotating twice in the opposite direction with strong water flow, and then pausing for a short time. As shown in Figure 5b, even if the basic cycle is a weak water flow, the operation is continued in the specified short-period reversal basic cycle. ,
Because the strong water flow rotates forward and backward, the detergent is quickly dissolved, and the immersion effect of forcibly drawing the items to be washed into the water is improved, making the washing efficiency much better than that of conventional methods. This can be improved over the short-cycle inversion cleaning method. In addition, according to the present invention, when the water flow is reversed by a strong water flow, the washing liquid is forced to pass between the fibers of the object to be washed, and at this time, a large compressive force is applied to the object to be washed. As a result, the dirt between the fibers is forcibly removed, and as a result, the time required for the subsequent basic cycle of washing and rinsing can be shortened. In addition,
In the short-cycle reversal cleaning method where no vortex is formed in the water flow, at the beginning of the washing and rinsing process,
If a strong water flow is operated in one direction for a predetermined period of time, a submergence effect can be observed in which the items to be washed floating on the surface of the water are forcibly drawn into the water. As already mentioned, the object to be washed and the object to be washed rotate together in the tank, and the relative speed becomes almost zero, so that the cleaning effect due to the washing liquid passing between the fibers of the object to be washed cannot be expected.

Furthermore, according to the present invention, at the beginning of the washing and rinsing processes, the
When the washing water and washing items are rotated twice with a strong water flow, and the first rotation is to reverse the washing water and washing items that are rotating in one direction, the reversing action stops the flow of the washing water and washing items, and the washing It is a short period of time that does not cause water splashing, and the second time is a longer time than the first time, and then, after a short rest period, it is rotated twice in the opposite direction, and the first time is , when the washing water and washing items rotating in one direction are reversed, the reversing action stops the flow of the washing water and washing items, and is a short period of time during which splashing of the washing water does not occur; The second time is a cycle operation with a strong water flow that is repeated for a longer period of time than the first time, so that when reversing the washing water and items being washed that are rotating in one direction, the first reversal is The action stops the flow of the washing water and the washing material, and the following 2
The water to be washed and the items to be washed are circulated in a fixed direction by the second rotation, and by repeating this cycle in the forward and reverse directions, the water splashes when the water flow is reversed and hits the inside of the machine lid to be washed. It is possible to eliminate the problem of water splashing inside and falling from the space between the outer frame 1 of the washing machine and the water receiving tank 4 and wetting the floor surface, and while the washing machine is operating,
Wetting the floor surface with washing water has a fatal flaw in the reliability of the washing machine, and when the washing machine lid is opened, a large amount of water droplets adhere to the inside of the lid. This may make workers feel uneasy about whether something is wrong with the washing machine.

In addition, the cause is water splash when dissolving the detergent quickly or forcing the item to be washed into water, that is, water splashing when the washing water is rotating in one direction and when the item being washed is turned over. As I get older,
In order to eliminate the problem of water hitting the inside of the washing machine lid and splashing onto the inside of the lid, the water falls from the space between the washing machine outer frame 1 and the water receiving tank 4 and wets the floor surface. It is conceivable to cover the bottom of the machine with a water receiving plate and discharge the splashed water that has accumulated on this water receiving plate to the outside of the washing machine. Not only does this require a new plate equivalent to the size of the washing machine, which increases material costs, but also, as mentioned above, this type of equipment is equipped with a fan to cool the washing machine drive motor 8, and this cooling In order to smoothly supply and exhaust the fan, the bottom of the washing machine outer frame 1 that constitutes the supply and exhaust passages cannot be blocked by the water receiving plate, and the bottom of the outer frame 1 must be used as a water receiving plate. If it is covered with a plate, the motor 8 will overheat and cause trouble.

Under these circumstances, as in the present invention described above, at the start of the washing and rinsing processes, the washing and rinsing processes are rotated twice in the same direction with a strong stream of water with a short pause in between.
And the first time, when the washing water and the washing items that are rotating in one direction are reversed, the reversing action stops the flow of the washing water and the washing items, and also causes the water to be washed to splash. The second time is a longer time than the first time, and then, after a short pause, the machine is rotated twice in the opposite direction, and the first time is
When the washing water and washing items that are rotating in one direction are reversed, the flow of the washing water and washing items is stopped by the reversing action, and it is a short time that does not cause splashing of the washing water.
If the cycle operation is repeated with a strong water flow for a longer time than the first cycle, when the washing water and the items being washed that are rotating in one direction are to be reversed, the reversal action of the first time will be more effective. Then stop the flow of washing water and washing products,
The second rotation that follows rotates the water to be washed and the items to be washed in a fixed direction, and by repeating this cycle in forward and reverse directions, the water splashes when the water flow is reversed and hits the inside of the machine lid to be washed. , the fatal defect that water splashing inside the lid falls from the space between the washing machine outer frame 1 and the water receiving tank 4 and wets the floor, was solved by problems caused by overheating of the motor 8, and furthermore, by adding a water receiving plate. This can be solved without increasing the material cost due to attachment.

By the way, as in the present invention, at the beginning of the washing and rinsing process, the process is rotated twice with strong water flow in the same direction with a short pause in between, so that the second rotation takes longer than the first rotation, and then a short pause is made. After a while, do the same in the opposite direction, and the second time is the first
If you repeat the cycle operation with strong water flow by rotating twice with strong water flow and then pausing for a short time so that the time will be longer than the first time, the second rotation time will be longer in both forward and reverse rotations. Since it is long, the dissolution of the detergent is further promoted by a sufficiently strong water flow, which in turn contributes to further improvement in washing efficiency.

Note that, unlike the present invention, this is not a short-period reversal cleaning method in which vortices are not formed in the water flow to be washed, but a method in which vortices are formed in the water flow to be washed, similar to the technology described in the aforementioned Japanese Patent Publication No. 48-21274. However, Japanese Unexamined Patent Publication No. 15575/1983 entitled "Washing Machine for Dehydration and Dehydration" also discloses a technology related to the flow of water for washing.

However, the dehydrating and washing machine described in the above-mentioned Japanese Patent Application Laid-Open No. 51-15575 is designed to quickly dissolve detergent and to use water splashing when the items to be washed are forcibly drawn into the water from the inside of the machine lid. They were not aware of the problem of eliminating the problem of water splashing on the inside of the lid and falling from the space between the outer frame of the washing machine and the water tank and wetting the floor.
There is room for improvement in this respect.

〔Effect of the invention〕

In summary, according to the present invention, in a short-period reversal washing method in which no vortex is formed in the water flow to be washed, the detergent is quickly dissolved and the immersion effect of forcibly drawing the items to be washed into the water is also improved. , the washing efficiency can be improved compared to the conventional short-cycle inversion washing method, and at the same time, as an effect unique to the present invention, the detergent is quickly dissolved and the items to be washed are forcibly drawn into the water. This is a fatal defect in that water splashes onto the inside of the lid of the machine to be washed, and the water that splashes onto the inside of the lid falls from the space between the outer frame of the machine to be washed and the water tank and wets the floor. Problems caused by overheating of the washing machine drive motor can be solved without increasing material costs due to the addition of a water receiving plate.

[Brief explanation of the drawing]

FIG. 1 is an open cross-sectional view of a fully automatic washing machine used to carry out the operating method for a fully automatic washing machine according to an embodiment of the present invention, FIG. 2 is its electrical circuit diagram, and FIGS. 3 and 4 are: FIG. 5 is an operation flow diagram showing the operating method of the fully automatic washing machine according to the above embodiment, and FIG. 5 is an operation signal diagram thereof. 1...Outer frame, 4...Water tank, 5...Hanging rod, 7
... Basket, 8 ... Motor, 12 ... Rotating blade, 13 ... Water supply valve, 16 ... Electronic timer, 1
8...Drain valve, 23...Pressure switch, 25...
Instruction control section, 32... Input switch section, 34...
Drive part.

Claims (1)

[Scope of Claims] 1. A water receiving tank incorporating a rotary blade and a basket driven by a motor, suspended from an outer frame with an open bottom for supply and drainage, and a water receiving tank with predetermined washing, rinsing, and dewatering processes. a timer that automatically controls according to a time cycle, the motor is equipped with a fan for cooling the motor, and the washing process is continued in a short-period reversal cycle in which no vortex is formed in the washing water flow. In this method of operation, at the start of the washing and rinsing processes, the machine is rotated twice in the same direction with a strong stream of water, with a short pause in between, and in the first rotation, the washing water and the items being washed that are rotating in one direction are rotated twice. When inverting, the inversion action stops the flow of the water to be washed and the items to be washed, and is a short period of time during which the water to be washed does not splash, and the second time is a longer time than the first time, and then , after a short pause, rotate twice in the opposite direction with a strong stream of water, and the first time is due to the reversal effect when the washing water and the items being washed are reversed while they are rotating in one direction. In addition to stopping the flow of washing water and washing items,
Cycle operation is repeated with a strong water flow for a short time that does not cause splashing of the water to be washed, and the second time is longer than the first time, and then the machine is operated in the specified basic cycle of short-period reversal. A method of operating a fully automatic washing machine characterized by continuing.