JPS6258278B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a single-tub dehydrating washing machine,
It takes advantage of the ease of use of conventional fully automatic single-tub dehydration washing machines that can finish washing without touching the laundry from washing to dehydration, and can be used freely for various washing capacities, soil conditions, and fabrics. , washing/
A single-tub dehydrating washing machine with good performance and ease of use that incorporates the advantages of conventional manually operated two-tub dehydrator washing machines, such as rinsing and dehydrating times, number of rinses, and amount of water used. It provides an opportunity for

Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. In the figure, 1 is a water tank that receives washing water;
2 is a tank installed inside the aquarium, with a pulsator 3 installed at the bottom and numerous small holes 4 for draining water on the side wall.
is installed. 5 is a flange fixed to the tank 2, and is fixed to the shaft 6 passing through the center of the flange.
During dewatering, the tank 2 is rotated by the rotation of the shaft 6. 7 is a shaft for rotating the pulsator 3, and 8 is a balancer case inserted and fixed to the inner circumferential surface of the upper end of the tank 2, which contains liquid such as water. 10 is a drainage hose provided at the bottom of the water tank 1; 11 is an on-off valve that opens and closes the drainage hose 10;
Reference numeral 12 designates a mechanical unit that incorporates a clutch mechanism and the like for switching between washing and dehydration, and 13 represents an electromagnetic device that opens and closes the on-off valve 11 and operates the switching between washing and dehydration in the mechanism unit 12.

A drive motor 14 rotates the shaft 6 and the shaft 8, and is fixed to the support plate 15 together with the mechanism section 12, the electromagnetic magnet 13, the tank 2, the water tank 1, etc. Reference numeral 16 denotes an outer box, which is supported by a support rod 17 provided at the upper corner of the outer box through a spring 18, etc.
The support plate 15 is swingably suspended and supported.

19 is a top plate formed integrally with the operation box 20. The operation box 20 houses a manual time switch 21, a pressure switch 22 for water level control, a safety switch 23 linked to the lid above the tank 2, a washing/draining/dewatering selection switch 24, a water inlet 25, etc. and knob 2 of manual time switch 21.
An operation panel 27 on which 6 etc. are arranged is covered.

Next, we will explain the third part about the operation of the washing machine with the above configuration.
Description will be given with reference to the electrical circuit shown in the figure, the operating program shown in FIG. 4, and the schematic configuration of the washing machine shown in FIG.

When washing or rinsing, the laundry is placed in the tank 2, and water is supplied into the tank 2 from a water supply port 25 connected to a water supply or the like via a hose 28 or the like. Add water until the water level in the tank 2 reaches an appropriate amount of water depending on the amount of laundry at a level above the lowest water level B that trips the pressure switch 22 and closes the NO contact, and then turn off the water tap.
Stop water supply.

Next, select the washing/draining/dewatering selection switch 24 to side a, which is the washing side, and turn on the manual time switch 21.
When the knob 26 is set to the required washing or rinsing time, the main contact of the manual time switch 21
Since _T1 is closed and the NO contact of the pressure switch 22 is closed, the circuit including the drive motor 14 is closed and the pulsator 3 rotates.

Time limit t ₁ of main contact T ₁ of manual time switch 21
is the required washing time initially set, and in the case of this example, the maximum time limit of the main contact _T1 was set to 9 minutes.
Further, the trip water level b of the pressure switch 22 was set to 91.4 mm from the upper end of the pulsator 3. In the circuit of FIG. 3 which rotates the motor 14 during washing or rinsing, opening and closing of the sub-contact _T2 of the manual time switch 21 has no effect.

As described above, after the pulsator 3 of the _T1 contact rotates within the required washing time or the required rinsing time, draining and dewatering is performed. side and set the knob 26 of the manual time switch 21 to the required dehydration time within the maximum time t ₂ of the sub contact T ₂ , the main contact of the manual time switch 21
T ₁ and auxiliary contact T ₂ are closed, and both contacts T ₁ and T ₂ are connected in series through the drain/dehydration side contact of the washing/drain/dehydration selection switch 24 , which passes through the safety switch 23 and includes the electromagnet 13 . The circuit is closed, the electromagnetic magnet 13 is activated, and the mechanism section 12 containing the washing/dehydration switching clutch mechanism is switched to the dehydration side, and the drain valve 11 is opened to drain the water through the drain hose 10.

When the water level of the washing water or rinsing water in the tank 2 falls to the reset water level of the pressure switch 22, the NO contact opens and the NC contact closes, the circuit consisting of the motor 14 connected in parallel with the electromagnetic magnet 13 closes, and the electromagnetic The motor 14 operates together with the magnet 13, and the tank 2 rotates to start dewatering, and the water is dehydrated for a time equal to the initially set required dehydration time minus the drain time. In this embodiment, the maximum time limit t ₂ of the sub-contact T ₂ is 5 minutes. If the initial required dehydration time is set to 5 minutes or more, the main contact T ₁ will close, but if the remaining time does not reach t ₂ , that is, 5 minutes, the sub contact T ₂ will close a.
It has a side that prevents it from closing. Therefore, the circuit including the electromagnetic magnet 13 is not closed, and neither drainage nor dewatering occurs. In the case of this embodiment, the reset water level a of the pressure switch 22 was set to 6.4 mm from the upper end of the pulsator 3.

As mentioned above, when washing or rinsing, the circuit configuration is such that the pulsator 3 will not rotate unless water is added to the water level B at which the pressure switch 22 trips. , knob 2 of manual time switch 21
Even if 6 is turned, the laundry in the tank 2 will not be torn by the pulsator 3.

In addition, by making the water level b from the upper end of the pulsator 3 sufficiently small at the trip water level B, the amount of water can be determined appropriately depending on whether the amount of laundry is large or small. It is more economical than conventional single-tub dehydrating fully automatic washing machines. Further, in the case of this example, by setting b to 91.4 mm, it was possible to economically wash only 2 to 3 towels (approximately 200 g) with a small amount of water.

In addition, normally with this type of pulsator washing machine, a time limit of around 10 minutes is required to wash heavily soiled clothes, and by setting the maximum time limit t ₁ of main contact T ₁ to 9 minutes, it is possible to wash heavily soiled clothes. It was able to remove stains even with a large load of laundry. Further, in the case of rinsing, the number of times of rinsing can be freely determined for various types of laundry, making it economical.

Next, the reason why the maximum time limit t ₂ of the sub contact T ₂ was set to 5 minutes is as follows.
Generally, this is due to the fact that the dehydration rate (squeezing degree) reaches a saturated state in about 5 minutes. If dehydration is carried out for too long, the dehydration rate will not improve, wrinkles will easily occur, the cloth will be easily damaged, and it will be uneconomical. Generally, for normally soiled clothing, it is desirable to make the washing time longer than the spin-drying time. In this example, by setting t ₁ to 9 minutes and t ₂ to 5 minutes, washing can be set to an arbitrary time of 9 minutes or less, but the spin-drying time, including draining time, can be set to 5 minutes or less. It can only be set. In order to open and close these two different maximum time contacts with the same knob 26, even if the timer is set to _t2 or more during dehydration, the sub contact _T2 does not close and the remaining time becomes less than _t2 . The contact opening/closing cam is devised so that the sub-contact T ₂ closes only when the machine is washed, and the knob 26 can be easily operated and the washing and spin-drying times can be selected economically.

In addition, when performing the draining and dehydration process, if the dehydration process is started with washing water remaining in the tank 2, the required torque to rotate the tank 2 at startup is large, and a large load is placed on the motor 14. It takes a long time to reach steady rotation, and a large current consumption flows for a long period of time, which is uneconomical, and also causes a large temperature rise in the windings of the motor 14, which is a safety problem. If a motor with a large output is used to counter this, the cost will increase. Further, in the case of draining and dewatering immediately after washing, the washing liquid rotates together with the tank 2, so foaming is intense and the foam accumulates between the water tank 1 and the tank 2, and a larger starting torque is required. Therefore, it is better to drain the water sufficiently before starting the dewatering process. During drainage, only the electromagnetic magnet 13 is activated, and during dehydration, both the electromagnetic magnet 13 and the motor 14 are activated, but since drainage and dehydration are a series of operations, it is convenient for the user to operate the electromagnetic magnet 13 automatically after draining. It is convenient to move on to the dehydration process.

According to this embodiment, by setting the reset water level A of the pressure switch 22 sufficiently low, when the water in the tank 2 is drained, the pressure switch 22 is reset and the NC contact is closed. 13 and the motor 14 is automatically energized,
Dehydration begins.

Therefore, the continuous process of draining and dewatering is automatically carried out without the user's intervention. Also, regardless of the amount of washing liquid in tank 2, with a constant amount of remaining water,
Since dewatering starts, if the amount of water in the tank 2 during washing is small, the draining time will be shorter, which is more rational than setting a uniform draining time. Further, since dehydration is started with water remaining in the tank 2, the swing of the water tank 1 at the start of dehydration can be kept small. In the case of this example, the remaining water amount is approximately 15 by setting the reset water level a to 6.4 mm from the upper end of the pulsator, and it does not have a negative effect on the torque required at startup as described above. It has a positive effect on the fluctuations of time.

As described above, according to the single-tank dehydrating washing machine of the present invention, for example, the number of rinses, the amount of water used, the washing
The rinsing and spin-drying times can be freely determined for various types of laundry, making it possible to take advantage of the variety of washing methods of conventional two-tub spinner washing machines, and eliminating the need for unnecessarily long spin-drying times. It is a machine that can perform economical laundry, and also has the ease of use of a single-tub dehydrating washing machine, in that there is no need to touch the laundry or water from washing until the end of spin-drying. It is.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of a single-tub dehydrating washing machine according to an embodiment of the present invention, Fig. 2 is a perspective view of its external appearance, and Fig. 3
4 is a diagram showing the operating program of various loads, and FIG. 5 is a schematic diagram for explaining the trip water level and reset water level of the pressure switch. 2...tank, 3...pulsator, 11...on/off valve,
14... Drive motor, 21... Manual time switch, 22... Pressure switch, 24... Selection switch,
26...knob.

Claims (1)

[Claims] 1 A manual time switch, a selection switch for washing/draining and dewatering, a pressure switch that operates by detecting the water level in a tank with a pulsator placed on the inner bottom, and a pressure switch that rotates the pulsator during washing and rinsing and closes the tank during dewatering. It is equipped with a drive motor that rotates the water for dehydration, and an on-off valve for discharging the liquid in the tank, and when washing or rinsing, water is supplied into the tank above the water level at which the pressure switch trips, and the manual timer is used. By setting the switch to the required time and selecting the selection switch, the pulsator is rotated for the required time, and when draining and dehydrating, by selecting the selection switch and setting the manual time switch to the required time, A one-tank dehydrating washing machine that shifts from resetting the pressure switch to dewatering rotation of the tank, and sets the dewatering time to a time obtained by subtracting the draining time from the time required for the manual time switch, wherein the manual timer The maximum time limit for drain dehydration of the switch is set shorter than that for washing or rinsing, and the required time for each of the above washing or rinsing and drain dehydration can be set with the same knob on the manual time switch, and , When the above selection switch selects the drain dewatering side, and the manual time switch is set to the maximum time limit for drain dewatering or more, the drive will continue until the remaining time on the manual time switch becomes equal to or less than the maximum time limit for drain dewatering. A one-tub type dehydrating washing machine characterized by a structure in which a motor and an on-off valve are on standby for operation.