JPH04282195A - Drum type washing machine - Google Patents

Abstract

PURPOSE:To offer a drum type washing machine capable of effectively correcting the balance of washed cloth when dehydration is performed. CONSTITUTION:This washing machine is equipped with a rotary drum 2 to which the washed cloth is inputted, a receiving cylinder 3 which contains the rotary drum 2, a driving motor 4 which drives the rotary drum 2, a damper 5 which supports the receiving cylinder 3 elastically, a pump 12-driven setting the extension/compression of the damper 5 when the unbalance of the washing cloth 11 occurs in the dehydration of the rotary drum 2 as a power source, and a reservoir tank 14 arranged at a drain path 10 and which injects part of reservoired washing water to the rotary drum 2 again by driving the pump 12.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum-type washing machine that takes measures against imbalance during dewatering.

0002

2. Description of the Related Art Various methods have been considered to counteract the imbalance in conventional drum-type washing machines.

For example, during spin-drying, the rotation speed of the rotating drum is gradually increased to prevent unbalance by uniformly distributing the laundry cloth on the inner wall of the rotating drum, and then the rotation speed is increased to a predetermined rotation speed to perform dehydration. In addition, in order to make it easier to untangle the laundry when the laundry is heavily tangled, there is also a method of reversing the direction of rotation of the rotating drum at low speed during spin-drying to reverse the direction in which the laundry is tangled to loosen the tangles of the laundry. In order to peel off the laundry cloth stuck to the inner wall of the rotating drum and return it to its initial state, the rotating drum is rotated at low speed and new water is supplied into the rotating drum. For example, how to weight the washing cloth and peel it from the rotating drum.

0004

[Problem to be solved by the invention] In the above conventional method, it is natural to gradually increase the rotation speed, but
Even with the method of reverse rotation, in the case of laundry cloth with a high cotton content, the unbalance could not be completely corrected because the cloth would stick to the inner wall of the rotating drum. In addition, the method of water supply can correct the imbalance, but the water is supplied regardless of the unbalanced state, and moreover, the washing water is only partially absorbed by the washing cloth, and the rest is drained. It was a waste of money.

The present invention is intended to solve the above-mentioned conventional problems, and its first object is to provide a drum-type washing machine that can effectively correct unbalance using a water supply type washing machine. A second object of the present invention is to provide a drum-type washing machine equipped with a new means for supplying water.

[0006]

[Means for Solving the Problems] In order to achieve the first object, the present invention includes a rotating drum into which laundry cloth is input, a receiver housing the rotating drum, and a drive motor for driving the rotating drum. a damper that elastically supports the receiving tube; a pump that is driven using the expansion and contraction of the damper as a power source when the washing cloth is unbalanced during dewatering of the rotating drum; and a washing machine that is disposed in a drainage path and stores water by driving the pump. The drum-type washing machine is equipped with a water storage tank for injecting part of the water into the rotating drum again.

In order to achieve the second object, a drum-type washing machine is provided in which the expansion and contraction of a damper is converted into electromotive force of a generator, which is used as a power source for a pump.

[0008]

[Operation] In the above-described present invention, when an imbalance occurs in the rotating drum during the dewatering process, the damper expands and contracts significantly, and this expansion and contraction force is utilized to operate the pump and send air to the water storage tank. The water storage tank is disposed in the drainage path and stores a portion of the washing water, so that when air is pressurized, the washing water is again injected into the rotating drum. This allows the washing cloth to absorb the washing water and increase its apparent weight.The washing cloth is then peeled off from the inner wall of the rotating drum to return it to its initial state, and when the spin-drying process is started again, the washing cloth becomes uniform. be.

Furthermore, in the present invention, the expansion and contraction of the damper when imbalance occurs is converted into electromotive force of the generator and used as a power source for the pump, and the pump pressurizes air into the water storage tank and injects the washing water into the rotating drum again. It is something to do.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a drum-type washing machine according to the present invention will be described below with reference to the accompanying drawings. In FIG. 1, 1 is the main body of a drum-type washing machine, 2 is a rotating drum into which laundry cloth is thrown, 3 is a receiver housing the rotating drum 2;
4 is a drive motor that drives the rotating drum 2; 5 is a damper that elastically supports the receiving tube 3 within the main body 1; 6 is a water supply valve provided in the middle of the water supply path 9 connected to the inside of the receiving tube 3; Receiver tube 3
8 is a spring supported by the receiving cylinder 3; 11 is the washing cloth in the rotating drum 2; 12 is a drain valve provided in the middle of the drainage path 10 connected to the bottom of the washing cloth 11 during dewatering; A pump 14 is a water storage tank connected to the pump 12 via a pipe 13, and is arranged in the drainage path 10.
A part of the stored washing water is injected into the rotating drum 2 through the injection pipe 15 by driving the pump 12.

As shown in FIG. 2, the pump 12 has a damper fixed part 5a and a damper movable part 5b which constitute the damper 5, and a pump main body 12a and a pump movable part 12b, respectively.
is fixed. In addition, a check valve 12f is provided at each of the intake port 12d and the exhaust port 12e through which air flows into the cylinder 12c. I sent it to the 14th. A part of the washing water is stored in the water storage tank 14, and when compressed air is sent from the pipe 13, the water surface is pushed, so that the washing water is injected into the rotating drum 2 through the injection pipe 15.

In the above structure, when the washing process is started, the water supply valve 6 opens and the water is supplied to the rotary drum 2 via the water supply path 9.
Water is supplied from the top, and after washing is completed by rotating the rotary drum 2 for a predetermined period of time, the washing water is drained through the drain path 10 and the drain valve 7.

In the dewatering process, the rotation speed of the rotating drum 2 is gradually increased (50 to 12 for a rotating drum with a diameter of 40 cm).
0rpm/20sec is optimal). If the laundry cloth 11 in the rotating drum 2 is unbalanced, the damper 5 expands and contracts significantly, so the pump 12 operates faster and the amount of washing water injected into the rotating drum 2 increases. By rotating the rotating drum 2 for a predetermined period of time, the washing cloth 11 absorbs washing water and becomes heavier in appearance as shown in FIG. When it peels off and returns to its initial state, and when the spin-drying is started again, the wash cloth becomes uniform and spin-drying can be performed.

Next, the second drum-type washing machine according to the present invention will be described.
An example will be described based on FIGS. 3 and 4. In this embodiment, the expansion and contraction of the damper 5 is converted into an electromotive force of a generator 22, which is used as a power source for the pump 12. That is, the electromotive force of the generator 22 causes the DC motor 2 to flow through the rectifier circuit 23.
1 power source and drives the pump 12.

To explain the specific configuration with reference to FIG. 3, a cylindrical coil 22a is provided in the damper fixed part 5a, and a ferrite rod 2 that moves up and down within the coil 22a is provided in the damper movable part 5b.
2b is fixed.

In this embodiment, if the washing cloth 11 in the rotating drum 2 is unbalanced during the dewatering process, the damper 5
, the ferrite rod 22b expands and contracts greatly, so the ferrite rod 22b
The movement of moving up and down within 2a becomes faster, and an electromotive force is generated by the generator 22, which drives the pump 12. The uniformization of the washing cloth by injecting washing water into the rotating drum 2 and the resulting dehydration are the same as in the first embodiment.

[0017]

[Effects of the Invention] As described above, the drum-type washing machine of the present invention uses the elastic force of the damper as a power source for injecting washing water into the rotating drum, and it is necessary to detect the amount of imbalance in the rotating drum using a sensor or the like. It is possible to effectively correct the imbalance. Furthermore, since no additional water supply is required to remove the laundry from the rotating drum, water is also saved.

Furthermore, the drum-type washing machine of the present invention converts the expansion and contraction of the damper into the electromotive force of the generator and uses it as a power source for the pump, so the pump can be driven by the electric motor and unbalance can be reliably corrected. It is something that

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a first embodiment of a drum-type washing machine of the present invention.

[Figure 2] Enlarged sectional view of the pump of the drum-type washing machine

[Figure 3
] A configuration diagram of a generator portion showing a second embodiment of a drum-type washing machine of the present invention.

[Figure 4] Electrical circuit diagram of the generator part of the drum-type washing machine

[
FIG. 5 is a sectional view illustrating the state of the laundry cloth during dewatering in the drum-type washing machine of the present invention.

[Explanation of symbols]

1 Main body 2 Rotating drum 3 Receiver 4 Drive motor 5 Damper 11 Laundry cloth 12 Pump 14 Water storage tank 22 Generator

Claims (2)

[Claims] 1. A rotary drum into which laundry cloth is input, a receiver housing the rotary drum, a drive motor for driving the rotary drum, a damper for elastically supporting the receiver, and a receiver for removing water from the rotary drum during dewatering. A pump that is driven using the expansion and contraction of a damper when the laundry cloth is unbalanced as a power source, and a water storage tank that is arranged in a drainage path and that injects a part of the stored washing water into the rotating drum again when the pump is driven. Equipped with a drum-type washing machine. 2. The drum-type washing machine according to claim 1, wherein the expansion and contraction of the damper is converted into electromotive force of a generator to be used as a power source for the pump.