JPS6029995Y2 - Dehydration/washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a dewatering/washing machine in which both an agitating blade and a rotary tank are rotationally driven by a single drive motor.

Conventional dehydrating and dehydrating washing machines of this type have a rotating tank that serves as both a washing machine and a dehydrating tank in a water receiving tank that is elastically suspended in an outer box, and a stirring blade is provided at the bottom of the rotating tank. A mechanical part having a drive shaft, a clutch mechanism, etc. is attached to the center of the outer bottom of the water tank, and a four-pole drive motor is attached to the outer bottom of the water tank, and this drive motor drives the rotating tank and the mechanism part. The rotation of the drive motor is reduced by the belt transmission mechanism and transmitted to the drive motor as a rotation of, for example, about 800 rpm, and the rotation of the drive shaft is controlled by the action of the clutch mechanism in the mechanism. The water is transmitted to the stirring blade during washing and to the rotating tank during dewatering.

However,. In the above-mentioned conventional configuration, a belt transmission mechanism must be provided between the rotating tank of the drive motor and the drive shaft of the mechanism section, which has the disadvantage of requiring a large number of parts, making the configuration complex and expensive.

Furthermore, since the drive motor is installed on the outer bottom of the water tank at a distance from the mechanical part attached to the center of the outer bottom, the center of gravity of the water tank does not coincide with the center of the water tank. There was a problem that the rotary tank became unbalanced and was prone to abnormal rocking when rotating.

Moreover, like in our country, the frequency of commercial power supply is 50H2 and 6.
If the power frequency changes depending on the region, such as when the frequency is 0Hz in some regions, the rotation speed of the drive motor changes, which changes the rotation speed of the stirring blades and rotating tank, making it impossible to obtain a dewatering effect in a well-washed area. Therefore, in the past, the reduction ratio of the belt transmission mechanism had to be changed by replacing parts such as replacing the pulley of the belt transmission mechanism each time the area was different, which was extremely troublesome.

The present invention was developed in view of the above circumstances, and its purpose is to use a drive motor that can change the direction and number of poles for rotation of the stirring blades and the rotating tank, and to use the drive motor during washing. The system is configured so that the washing shaft of the stirring blade is directly rotated, and during dewatering, the drive motor is operated in a direction, which directly rotates the dewatering shaft of the rotary tank, thereby reducing the speed of the belt transmission mechanism, etc. No mechanism is required, the number of parts can be reduced accordingly, the configuration is simple and inexpensive, and the drive motor can be placed in the center of the support part such as a water tank, reducing unbalanced loads on the support part. Moreover, the frequency of commercial power supply is 50Hz and 6
To provide an extremely convenient dehydrating and washing machine that does not require parts replacement even when the frequency changes to 0 Hz.

An embodiment of the present invention will be described below with reference to the drawings.

1 is an outer box, 2 is a water receiving tank as a bottomed cylindrical support that is elastically suspended in the outer box 1, and 3 is a rotating tank which is a washing machine and dehydration tank placed inside this water receiving tank 2. has a cylindrical shape with a bottom and a large number of dehydration holes 4 in the peripheral wall.

Then, stirring blades 5 are arranged at the inner bottom of this rotating tank 3.

Reference numeral 6 denotes a support body attached to the outer bottom of the water receiving tank 2, and a shaft cylinder portion 7 projecting downward is provided approximately at the center thereof.

Reference numeral 8 denotes a support attached to the outer bottom of the rotary tank 3, and a hollow shaft 9, which is a dehydration shaft directed downward, is protruded from approximately the center of the support. 7 is rotatably inserted and supported from above, and the lower end portion is made to protrude downward.

Reference numeral 10 denotes a cleaning shaft protruding downward from the stirring blade 5, which is attached to the hollow shaft 9 of the receiver 8 with a sealing member 11.
It is rotatably inserted and supported from above via bearing metals 12, 12, and its lower end protrudes downward.

Reference numeral 13 denotes a drive motor which is suspended from the support body 6 via a mounting frame 14, and whose rotating tank 15 is made to protrude upward so as to correspond to the downward protruding end of the washing shaft 11. They are connected by a cylindrical connecting part 16 so that they can rotate together.

Then, a clutch, for example, a clutch spring 17, is wound around the connecting body 16 and the lower end of the hollow shaft 9 so as to straddle both.
8 protrudes outward.

In the above case, the drive motor 13 is composed of a capacitor-type single-phase induction motor, and has a structure in which the number of poles can be switched between directional and lateral.

Reference numeral 19 denotes a timer disposed in an operation box 20 installed upright at the rear upper part of the outer box 1, and as is well known, this is used to control the washing operation consisting of a series of steps from washing to spin-drying. In particular, during washing, the drive motor 13 is switched to normal operation, and a stopper member (not shown) is activated to engage the locking portion 18 of the clutch spring 17, and during dewatering, the drive motor 13 is operated at maximum speed. At the same time, the stopper member (not shown) is returned to the locking portion 1 of the clutch spring 17.
8 is released.

Next, the operation of this embodiment having the above configuration will be explained.

When the timer 19 is turned on to start the washing operation, water is supplied into the water tank 2 to a specified level during washing, and then the drive motor 13 is operated in a hole-type manner, and a stopper member (not shown) is operated to stop the locking portion 18 of the clutch spring 17. to lock.

As a result, the connection tool 16 and the hollow shaft 9 are cut off, and the rotation of the rotating tank 15 of the drive motor 13 is stopped by the connection tool 16.
The speed is directly transmitted to the stirring blade 5 through the washing shaft 10 without being decelerated, and the stirring blade 5 is connected to the rotating tank 15 of the drive motor 13.
It rotates at the same speed as the vortex to wash the rawhide.

On the other hand, during dewatering, after the water in the water receiving tank 2 has been drained, the drive motor 13 is operated at maximum speed, and the stopper member (not shown) is returned to release the clutch spring 17 from the locking portion 18.

As a result, the connecting body 16 and the hollow shaft 9 are connected by the clutch spring 17, and the rotating tank 1 of the drive motor 13 is connected.
5 is directly transmitted to the rotating tank 3 through the connecting body 16, the hollow shaft 9, and the receiver 8 without being decelerated.
is rotated by the drive motor 13 at the same number of rotations as the rotary tub 15, and the centrifugal force of the centrifugal force causes the laundry inside to be dehydrated.

By the way, in this kind of dehydrating and washing machine, if the rotation speed of the agitating blade 5 during washing is less than 30 or-p-m, the rotation of the laundry by the washing water flow will be poor and the washing effect will be poor. m or more, the washing water flow becomes too strong and damages the laundry. Therefore, in practice, the rotation speed of the stirring blade 5 should be set between 30 Or-p·m and 800 r-p·m.
It is generally known that it is effective to set the rotation speed within the range of 800 m.
If it is less than 1100 rpm, the dehydration rate will be extremely poor and drops may fall from the laundry even after the dehydration is completed.
If the rotation speed is more than r.p"m, the rotational speed of the rotational tub 3 will be reduced to 800r.p"m or more because the rotational speed of the rotational tub 3 will be abnormally vibrated due to the slight deviation of the laundry in the rotational tub 3. xt
It is generally known that setting it in the range oor-p-m is effective.

Let us now consider a case where the drive motor 13 is operated at maximum speed during washing and at maximum speed during dehydration, as in this embodiment.

First, when calculating the synchronous rotation speed of the drive motor 13, when the power frequency is 50H2, it is 750 rpm during washing (human rights) and 1100 rpm during dehydration (direction). -, and the power frequency is 60H2
In the case of washing (human rights), 900 rpm
Therefore, during dehydration (direction), it becomes 1200 rpm.

Therefore, in calculations, when the power frequency is 60Hz, the effective range for washing is 3oor-p*m~800r-p-m and the effective range for dehydration is 800r-p-m-1100r-p.
-m is exceeded, but if laundry is actually put into the rotating tub 3 as a load and washing and spin-drying operations are performed, the result will be as follows.

That is, the actual rotation speed of the drive motor 13 is equal to the power supply frequency 5.
In the case of 0Hz, approximately 550r when washing (human rights)
-p-m ~ 600 r-p-m, and during dehydration (direction) it becomes approximately 850 r・p"m, and the power frequency is 60 Hz.
In the case of washing (human rights), approximately 60 rpm
〜650rpm and about 110rpm during dehydration (direction)
00r-p-.

The difference between the synchronous rotation speed of the drive motor 13 and the actual rotation speed can be easily understood theoretically from the relationship between the synchronous rotation speed of the drive motor 13, rotor slip, torque curve, and output. Yes, and it was also confirmed by the experiment of this invention.

As described above, according to this embodiment, the drive motor 13 is provided which can switch the direction and the number of poles, and when washing, the drive motor 13 is operated in the normal operation, thereby causing the rotary tub 15 and the connector 1
The stirring blade 5 is directly rotated through the rotating tank 6 and the washing shaft 10, and the drive motor 13 is operated in a directional manner during dewatering. It is designed to directly rotate the motor, so there is no need for a conventional speed reduction mechanism such as a belt transmission mechanism.The number of parts can be reduced, the structure is simple, and it can be done at low cost. Since the rotary tank 15 of the motor 13 is connected to the washing shaft 10 during washing and to the hollow shaft 9 during dehydration, the drive motor 13 can be placed in the center of the water receiving tank 2, which is a support part, and therefore, Unlike in the past, the water receiving tank 2 is not subjected to unbalanced loads, and the water receiving tank 2 and therefore the rotating tank 3 do not swing abnormally due to the rotation of the rotating tank 3 during dewatering. Even in the case of 60Hz, the effective range when washing the actual rotation speed of the drive motor 13 is 300rpm to 80rpm.
Effective range of 800r- during dehydration within the range of 0r-p-m
It can be within the range of p-m to 1l100r-p-, so there is no need to replace parts such as replacing the pulley of the belt transmission mechanism every time the power frequency changes as in the past, which is extremely convenient. It is.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can of course be implemented with appropriate modifications within the scope of the invention.

The present invention, as described above, does not require a speed reduction mechanism such as a belt transmission mechanism, can reduce the number of parts, is simple in construction, and can be made at low cost. It is possible to eliminate unbalanced loads on the support part, prevent abnormal swings of the support part and therefore the rotating tank as much as possible, and the power supply frequency is 50
Even if the frequency changes between Hz and 60Hz, there is no need to replace parts, and an extremely convenient dehydrating and washing machine can be provided.

[Brief explanation of the drawing]

The figure is a schematic longitudinal sectional side view showing an embodiment of the present invention. In the figure, 1 is an outer box, 2 is a water tank support part, 3 is a rotating tank (washing tub and dehydration tank), 5 is a stirring blade, 9 is a hollow shaft (dehydration shaft), 1
0 is a washing shaft, 13 is a drive motor, 15 is a rotating tank, 16 is a coupling, and 17 is a clutch spring clutch.

Claims (1)

[Scope of utility model registration request] A rotating tank that serves as a washing tub and a dehydrating tank, a stirring blade disposed inside the rotating tank, a washing shaft connected to the stirring blade, a dewatering shaft connected to the rotating tank, and a washing shaft connected to the washing shaft. A drive motor that has a connected rotary tank and can switch the number of poles for direct connection and human power, and is operated in the human direction during washing and in the direction during dewatering, and the rotary tank of this drive motor is connected to the dewatering shaft during dewatering. A dehydrating and washing machine equipped with a clutch.