JPH07114873B2 - Drum type washer / dryer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a drum type washer / dryer in which washing and drying are performed by one drum, and more specifically, smooth transition from dehydration to drying is performed. To improve internal structure and control of drum type washer / dryer.

(B) Conventional technology A drum type washer / dryer has a structure in which the drum rotates around a horizontal axis, and since the same drum can be used for washing and drying, the washing function, dehydration function and drying function can be achieved. It is a typical example of a combined washer / dryer. In addition, there is a possibility of full-automatic laundry without loading the laundry (clothes to be washed and dried) and after the drying is completed.

The structure and operation will be described below with reference to the schematic view of the conventional drum type washer / dryer shown in FIG.

This drum type washer / dryer has a double structure of a water tank 2 suspended from an outer box 1 by a spring 4 and a drum 3 arranged inside the water tank 2 so as to rotate about a horizontal axis. Has become. The water tank 2 has a spring 4 to absorb vibrations during operation.
It has a function of storing and draining washing liquid and dehydration liquid. The drum 3 has a large number of small holes 5 in its entire peripheral wall for passing water during washing, drainage during dehydration and hot air for drying during drying. A plurality of baffles (protrusions) 6 for stirring the laundry are provided on the inner surface of the peripheral wall of the drum 3.

In the washing process, the laundry is put in the drum 3 and the washing water in which the detergent is dissolved is dripped from above to be included in the laundry.
Is performed at low speed. The laundry in the drum 3 has centrifugal force due to the rotation of the drum 3 and the baffle 6
Then, the drum 3 is lifted up to near the top of the drum 3 and then falls by its own weight (referred to as "tumbling"). This tumbling is repeated, and the laundry is washed by the impact force when it falls. Rinsing is performed in the same manner.

The dehydration work is performed by rotating the drum 3 at high speed and pressing the laundry against the inner surface of the peripheral wall of the drum 3 by utilizing the centrifugal force. Water is blown from the small holes 5 of the drum 3 to the water tank 2
It is guided to the lower part through the inner surface of, and discharged through the switching valve 7 to the outside of the machine.

The drying operation is performed by rotating the drum 3 at a low speed while blowing warm drying air from around the opening 8 of the drum 3. In addition,
Since the volume of laundry increases as it dries, the amount that can be dried at one time is limited to about half the amount washed. This is because it is necessary to rotate the drum 3 at a low speed and change the position of the laundry by tumbling in order to eliminate unevenness in drying.

In FIG. 5, 13 is a drive motor for rotating the drum 3, and 15 is a circulation pump for circulating wash water.

(C) Problem to be Solved by the Invention In the drum type washer / dryer as described above, the operation had to be temporarily stopped when shifting from the dehydration step to the drying step. That is, the laundry is strongly pressed against the inner surface of the peripheral wall of the drum 3 by the centrifugal force generated by the high speed rotation during the dehydration. The pressed laundry bites into the small holes 5 and sticks thereto. The bite-in and stick-on laundry does not naturally fall from the drum 3. Therefore, there is a drawback in that after the dehydration is completed, the operation must be stopped once, and the laundry must be loosened by hand before entering the dry operation.

Further, if the rotation speed of dehydration is lowered (1000 → 500 rpm) in order to prevent the sticking, the dehydration rate becomes low and the subsequent drying treatment time becomes long.

Conventionally, after washing and spin-drying, in order to dry only the required laundry, the operation is temporarily stopped after the spin-drying, all the laundry is disentangled from the drum 3, and the laundry that does not require a drying process is taken out, and then the drying operation is performed. Was often done. For this reason, the above-mentioned drawback was inconspicuous. However, recently, as the demand for full-automatic driving using nighttime and the like has increased, the above drawback has become a big problem.

The present invention has been made in view of the above circumstances,
An object of the present invention is to provide a drum-type washer / dryer that can smoothly perform the transition from the dehydration process to the drying process and does not need to reduce the dehydration rotation speed to prevent sticking.

(D) Means and Actions for Solving the Problems The present invention is directed to a water tank fixed in an outer box, a rotatably supported inside the water tank, capable of accommodating laundry, and ventilation and ventilation for the peripheral wall. A drum having a large number of small holes for extending the inner wall of one side wall of the drum toward the other side wall along the peripheral wall, and hooking and lifting the laundry in the drum as the drum rotates. A drum protrusion, a stirrer coaxially and independently rotatable with the drum at a position near the other side wall in the drum, and a stirrer provided along the peripheral wall facing the drum protrusion on the stirrer, A drum type washer / dryer having a plurality of stirrer protrusions for hooking and lifting the laundry in the drum as the stirrer rotates.

That is, the drum type washer / dryer of the present invention is provided with a stirrer that can rotate independently in the drum of the conventional drum type washer / dryer, and the stirrer for washing is equipped with the stirrer for washing. A ridge is provided, and a washing drum ridge is provided on the drum so as to face the ridge. At the end of the rinsing process, the stop positions of these two types of protrusions are adjusted, and the dehydration process is performed while maintaining the proper positions so that the laundry can be peeled off from the peripheral wall of the drum after the dehydration process. It is what

The stirrer here is near one side wall of the drum,
It is mounted so that it is coaxial with the drum and can rotate independently of it. And the stirrer is provided with a plurality of stirrers for washing. On the other hand, on the inner surface of the drum side wall facing the stirrer,
Preferably, the washing drum projections having a shape similar to the stirring board projections are preferably provided in the same number as the stirring board projections and fixed directly to the drum with screws or the like.

The two kinds of ridges have a certain length with respect to the width (depth) of the drum (for example, preferably ½ to ¼ of the width, and more preferably about ⅓ of the width). Also preferably,
Each cross-sectional shape is configured to have a long flat shape in the direction along the peripheral wall.

In the present invention, since two kinds of ridges are provided so as to face each other, the area ratio of the portion (near the ridges) of the drum peripheral wall where the laundry does not adhere is
It is larger than the conventional case. Therefore, at the end of the spin-drying, there is no sticking of the laundry to the drum in the vicinity of both ridges, and the self-weight of the laundry overcomes the sticking force and falls naturally from the drum peripheral wall. This tendency is particularly remarkable when the stirrer ridges and the drum ridges are stopped so as to have an alternate positional relationship at the end of rinsing, and the dehydration step is performed while maintaining that state.

Depending on the type and amount of laundry, it may be difficult to remove the laundry from the drum at the end of the dehydration even if the dehydration is performed while maintaining the above positional relationship. In this case, it is preferable that the agitator is rocked by a slight angle by the motor control to move the laundry by the agitator ridges to create a trigger to drop the laundry.

Thus, according to the present invention, it is possible to perform a fully automatic laundry that does not require the operation to be temporarily stopped during the period from washing to drying.

(E) Embodiment Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. The present invention is not limited to this.

In FIG. 1, the drum-type washer / dryer W includes an outer box 1,
It comprises a water tank 2 and a drum 3. As shown in FIG. 2, a front circular stirrer 9 is provided in front of the rear side wall in the drum 3 so as to rotate coaxially with the drum 3 independently. On this agitator 9, three washing agitator ridges 10 as shown in FIGS. 2 and 3 are integrally formed at equal intervals.

On the other hand, on the inner surface of the front side wall of the drum 3 facing the stirrer 9, a laundry drum projection 11 is directly fixed around the laundry loading opening 8 and in contact with the inner surface of the peripheral wall. Drum ridge 11
Have the same number and substantially the same shape as the stirring board ridges 10 integrally formed on the stirring board 9, and are arranged at equal intervals.

The shaft of the stirrer 9 and the shaft of the drum 3 have a double structure and can rotate independently. A drive motor 13 for rotating the drum 3, a drive motor 14 for rotating the stirrer 9, a circulation pump 15 for circulating washing water, and the like are attached to the outer surface of the bottom wall of the water tank 2.

In order to drive the drum 3 and the stirrer 9, a combination of bevel gears, which replaces the above two motors 13 and 14,
It is also possible to use a single motor by adopting a clutch or the like.

A stirrer 9 arranged along the rear side wall of the drum 3.
Is spaced from the side wall of the drum 3 by about 3 to 5 mm so that it does not come into contact with the rear side wall of the drum 3 even if it is bent by an external force during operation.

The stirrer 9 is formed by integrally mounting three stirring stirrer protrusions 10 for washing on a disc having a size substantially equal to the inner diameter of the drum 3 at equal intervals. Stirring board ridge
Reference numeral 10 has a protruding length that is about one-third of the width (depth) of the drum 3, and its cross section has a flat shape that is long in the direction along the peripheral wall. The stirrer ridge 10 is integrally molded of resin, but instead of this, it is also possible to attach the same thing as the drum ridge 11 to a shallowly squeezed tray-shaped metal plate. Is.

The drum projection 11 has the same shape as the stirring board projection 10 and is directly fixed to the drum 3 with a screw.

The operation of the drum type washer / dryer W will be described below.

When the washing and rinsing process is completed, the agitator 9 is stopped by the motor control means so that the agitator ridges 10 and the drum ridges 11 are alternately positioned at equal intervals. To fix. That is, the two types of washing protrusions 10 and 11 are each three. For this reason, as shown in FIG. 4, six kinds of washing protrusions 10 of 2 types are arranged at intervals of 60 degrees along the circumference of the drum 3.
Place 11 Then, the high speed rotation of dehydration is performed while maintaining this state.

Even if the above operation is performed, the laundry may not be peeled off by its own weight after the dehydration depending on the material and the amount of the laundry. In that case, the agitator 9 is swung by a slight angle by the motor control before the dehydration is completed and the drying is started. This assists the laundry to separate from the inner surface of the peripheral wall of the drum 3. That is, by inserting the stirrer ridge 10 having a flat cross section and an acute angle at the end portion like a wedge between the laundry 12 and the inner surface of the peripheral wall of the drum 3, and swinging it. Remove the laundry.

(F) Effects of the Invention In the drum type washer / dryer of the present invention, the stirrer is provided inside the drum, the stirrer is provided with the stirrer for washing, and the drum is used for washing. Drum ridges are provided. Therefore, according to the present invention, by adjusting the stop positions of the two types of ridges after completion of the rinsing and performing the dehydration process while maintaining the proper positions thereof, the laundry after dehydration can be easily peeled off from the drum. To the drying process is smooth, and it is not necessary to lower the spin-drying speed to prevent sticking.

Further, the stirrer provided with the washing ridge has a function of sufficiently stirring the laundry in each step of washing, rinsing and drying. Therefore, according to the present invention, it is not necessary to provide a special function or part for peeling off the laundry after the dehydration is completed, and a drum type washer / dryer having a simple structure, low cost and high reliability can be obtained. You can

[Brief description of drawings]

1 to 4 show an embodiment of the present invention.
That is, FIG. 1 is a schematic view of a drum type washer / dryer, FIG. 2 is a front view of a stirrer, FIG. 3 is a right side view of the stirrer, and FIG. 4 is a drum at the end of dehydration. FIG. FIG. 5 is a schematic view of a conventional drum type washing machine. 1 ... Outer box, 2 ... Water tank, 3 ... Drum, 5 ... Small hole,
9 …… Stirring board, 10 …… Stirring board ridge, 11 …… Drum ridge, 12 …… Laundry, 13 …… Drum drive motor, 14 ……
Stirrer drive motor.

Claims (1)

[Claims] 1. A water tub fixed in an outer box, and a drum rotatably supported in the water tub, capable of accommodating laundry, and having a large number of small holes for water and ventilation in its peripheral wall. Further, a plurality of drum protrusions extending from the inner surface of one side wall of the drum along the peripheral wall toward the other side wall and hooking and lifting the laundry in the drum as the drum rotates, and a portion of the drum near the other side wall. A stirrer that is supported coaxially with the drum so that it can rotate independently, and a stirrer that is provided along the peripheral wall facing the above-mentioned drum protrusions on the stirrer, and inside the drum as the stirrer rotates. Drum type washer / dryer equipped with multiple stirrer ridges for hooking and lifting laundry.