JPH0492697A - Rotary drum type washing machine - Google Patents

Abstract

PURPOSE:To improve efficiency for washing and to decrease the unevenness of washing by applying twisting and stirring effects to laundry. CONSTITUTION:The laundry put into a rotary drum 3 is hung up on movable baffles 9 after being partially wetted by a little washing liquid in the rotary drum 3. At such a time, the laundry is speedily and completely wetted by washing liquid jetted out from a nozzle by a circulation pump. The hung-up laundry is held on the baffles 9 in the middle of washing and afterwards, however, the laundry falls down by the rotation of the rotary drum 3 and collides with the bottom of the rotary drum. The washing liquid is also hung up and falls down together with the laundry. Washing is executed by a friction, collision and wetting among the laundry. At such a time, since the baffles 9 installed on the inner peripheral face of the cylindrical part of the rotary drum 3 are installed while being alternately decentered to the both side faces of the rotary part 3, the laundry is alternately hung up by the decentered baffles. Thus, efficiency for washing is improved and the unevenness of washing is reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a washing machine using a horizontal rotating drum.
A washing machine that improves washing performance and saves washing liquid by improving the washing effect and quietness depending on the shape, rotation speed and direction of the baffle inside the drum, circulating the washing liquid inside and outside the rotating drum, and appropriately managing the amount of water. It is related to.

[Prior art] Rotary drum type washing machines have been popular mainly in Europe, and are based on JIS C9606 washing machines or L
It is also specified as a testing machine such as L042.

In addition, this type of washing machine can carry out washing, spin-drying, and drying in an integrated manner, so it has recently been widely used in coin-operated laundry machines and the like.

Normally, this type of washing machine has three baffles installed at 120" intervals in a rotating drum with a rotating shaft in the horizontal direction, and the rotating drum rotates at a peripheral speed of about 54 m/min, and the laundry is transferred to the rotating drum. The product is lifted onto the washing liquid by rotation, and falls into the washing liquid on the way up due to gravity, where it is patted and washed.

[Problems to be Solved by the Invention] In conventional rotary drum type washing machines, the baffle in the rotary drum merely serves to lift the laundry, and since the number of laundry is small, it plays a small role in the washing effect.

Further, the small holes in the rotating drum are blocked by the laundry, and the washing liquid in the rotating drum does not communicate sufficiently with the washing liquid in the outer tub of the rotating drum. For this reason, it takes a long time to thoroughly wash the laundry, and the washing liquid must be at a water level that partially soaks the laundry, and in an amount that is sufficient to soak the rotating drum.

Conventionally, rotating drum type washing machines have required less detergent and water than whirlpool or agitation type washing machines, but the purpose of the present invention is to conserve environmental water quality by using even smaller amounts of detergent and water. The second aspect of the present invention is to provide a rotating drum type washing machine that can save resources.

[Means for Solving the Problems] In order to achieve the above object, the present invention employs the following configuration V).

In other words, a plurality of baffles are provided on the inner circumferential surface of the cylindrical portion of the rotating drum, and at least one of the side surfaces of the drum is equipped with a cleaning jet nozzle having a spout facing the inside of the drum at the center of rotation. a rotary drive comprising: a porous rotary drum having an axial center; and a control device for controlling the rotational speed of the rotary drum so that the laundry held in the rotary drum falls sufficiently after being lifted along the baffle. a washing liquid storage outer tank formed to surround the rotating drum and provided with a washing liquid level adjustment mechanism that can immerse the laundry in the rotating drum at the minimum necessary water level; and a washing liquid storage tank in the outer tank. This is a rotary drum type washing machine, which is provided with pipes for circulating cleaning liquid and a circulation pump for extracting a part of the cleaning liquid and spouting it into the rotating drum through the cleaning jetting nozzle.

[Operation] After the laundry put into the rotating drum is partially soaked with a small amount of washing liquid in the rotating drum, it is lifted up by a baffle that moves as the rotating drum rotates. At this time, the laundry is quickly and completely soaked with the washing liquid jetted from the nozzle by the circulation pump.

The lifted laundry is held halfway by the baffle, but due to the rotation of the rotating drum, it quickly falls and collides with the bottom of the rotating drum. A portion of the washing liquid is also lifted up and dropped along with the laundry. Washing is performed by friction, collision, and infiltration between the washing liquid and the laundry.

At this time, the baffles provided on the inner peripheral surface of the cylindrical portion of the rotating drum are installed alternately on both sides of the rotating drum, so that the laundry is lifted alternately by the biased buckles, so that the laundry is licked, twisted, and agitated. Since this effect is added, cleaning efficiency is improved and uneven cleaning is reduced.

Since the washing liquid is constantly circulated by the pump, dirt is quickly removed from the rotating drum, and the spraying of the washing liquid always supplies a sufficient amount of washing liquid to the laundry, improving the washing effect.

In addition, a water meter is installed on the outside front of the washing machine to check the amount of water in the outer tank containing laundry liquid and adjust it appropriately depending on the amount of laundry and the washing and rinsing processes, making it easy to manage the water amount. I can do it.

As a result, the washing efficiency is improved compared to the conventional method, and the amount of detergent, washing water, and washing time can be reduced.

Furthermore, rinsing efficiency is improved and the amount of rinsing water and rinsing time can be reduced. Furthermore, if the rotating drum is rotated in a fixed direction without being reversed, there will be no noise or vibrations associated with reversing, making it quiet, compact, and lightweight.

[Example] An example of a rotary drum type washing machine according to the present invention will be described based on the drawings.

FIG. 1(a) is an external view of a rotary drum type washing machine showing one embodiment of the present invention, FIG. 1(b) is a transparent perspective view thereof, and FIG.
The figure is a side sectional view, and FIG. 3 is a side sectional view of a baffle in the rotating drum.

As shown in the above drawings, etc., the washing machine of this embodiment has an outer box 1
It has an outer tank 2 housed therein and a rotating drum 3 housed in the outer tank 2 and having a rotation axis horizontally and in the front-rear direction. Front side surface of outer tank 2 and front side surface 3b of rotating drum 3
An opening 5 common to both is formed. An opening 5 is obtained by integrally forming a support frame 7 provided in the outer box 1 so as to pass through the open ends of the outer tank 2 and the rotating drum 3. This opening 5 is opened and closed by a waterproof door 6 which is attached to the outer box 1 and has good airtightness. A switch 8 is provided at the contact point between the door 6 and the outer box 1, and the rotating drum 3 is not rotated while the door 6 is open.

The rotating drum 3 has baffles 9 having lengths alternately extending from both side surfaces 3b to the center of the drum at constant intervals (60° intervals in this embodiment) in the circumferential direction of the inner peripheral surface of the cylindrical portion 3a. . In addition, the rotating drum 3 is provided with a large number of water passage holes 3C in its cylindrical portion 3a and both side surfaces 3b. Attach it to the outer periphery of the support frame 7 of the section 5.

It is supported by a bearing 4. The rotating drum 3 is connected to a belt 20 via pulleys 19a and 19b by a drum rotation drive motor 18 controlled by a rotation drive speed control device W and 18a disposed in the bottom side space between the outer box 1 and the outer tank 2. Rotationally driven.

The washing liquid, which is a mixture of stored water and a necessary amount of detergent, is supplied into the outer tank 2 from the water supply vibrator 27 via the water supply valve 26, and is drained into the drain provided at the bottom of the outer tank 2 during washing. Mouth 1
Via the circulation via 116.21 branched from the middle of the drainage via 15 connected to the drainage via 15, the water penetrated through the rotating shaft 22 of the rotating drum 3 and protruded into the rotating drum 3 by the driving force of the circulation pump 17. It is ejected from the nozzle 25 into the drum 3.

At this time, by attaching a filter 24 to the tip of the nozzle 25, it is possible to remove lint and the like during washing.

The highest liquid level 23 of the washing liquid in the outer tub 2 is set by a pipe 30 having an overflow port 29 branching from the drainage vibrator 15, as shown in FIG. 1(b). pipe 15.27.3
Arrows drawn near 0 indicate water supply and drainage directions.

Note that the pipe 30 may be made expandable and retractable so that the height of the overflow port 29 can be freely adjusted.

The optimal amount of water for washing and rinsing can be easily checked using the water meter 10 (FIG. 1(a)) provided on the front of the washing machine. When washing is completed, the washing liquid is discharged from the drain valve 14 via the drain vibrator 15.

Although the above explanation relates to washing, the present invention can also be applied to a rotating drum type washing machine capable of dewatering and drying.

In addition, by installing the baffle 9 of the above embodiment at an obtuse angle (for example, 150°) with respect to the rotation direction of the rotary drum 3, the rotation allows the laundry to fall along the inclined surface of the baffle 9. A bright sectional view of the drum 3 is shown in FIG. 4, and a developed view of the inner peripheral surface of the cylindrical portion 3a of the rotary drum 3 is shown in FIG.

Figure 6 shows the results of an actual test using a prototype machine.

Stirring type and spiral type are each method specified in JIS C9606, rotating drum A only has baffles according to JIS
This is the result of using the structure specified in C9606, the rotating drum B shown in FIG. 3, and the rotating drum C shown in FIG. 4.5.

As a result of washing with a specified amount of synthetic detergent at 30°C using EMPA No. 101 as a standard contaminated cloth according to the standard washing time specified in JIS C9606, Drum B and Drum C had a higher cleaning rate than the others. was high, and there was little unevenness in cleaning.

In addition, FIG. 6 shows the average cleaning rate of six test cloths and the width of its standard deviation. Here, the cleaning rate is the reflectance measured according to the following formula.

Cleaning rate (z) ((after test - before test) / (84 - before test)) xlOO

[Brief explanation of drawings]

Fig. 1 is an external view and perspective view of a rotating drum type washing machine according to the present invention, Fig. 2 is a side sectional view of a rotating drum type washing machine according to an embodiment of the present invention, and Fig. 3 is a view of the rotating drum type washing machine according to the embodiment. A side sectional view, FIG. 4 is a side sectional view of a rotating drum of another embodiment, and FIG.
The figure is a developed view of the inner circumferential surface of the rotating drum of the example, and FIG. 6 shows the results of a washing test using a prototype machine. [Effects of the Invention] According to the present invention, twisting and stirring effects are added to laundry, improving cleaning efficiency and reducing uneven washing. In addition, since the washing liquid is constantly circulated, dirt is quickly removed from inside the drum, improving cleaning efficiency. Furthermore, since the washing liquid is sufficiently permeated into the laundry by spraying the washing liquid, it is possible to improve the washing effect and reduce the amount of washing liquid, and it becomes easy to effectively remove and collect lint and the like. In addition, since it becomes possible to appropriately manage the amount of water, the water saving effect increases.

Claims (4)

[Claims] (1) A plurality of baffles are provided on the inner circumferential surface of the cylindrical part of the rotating drum, and a cleaning jet nozzle with a spout facing the inside of the drum is provided at the center of rotation on at least one side of the drum.The rotation axis is centered horizontally. a rotary drive mechanism comprising: a porous rotary drum having a rotary drum; and a rotary drive mechanism comprising a control device for controlling the rotational speed of the rotary drum so that the laundry held in the rotary drum falls sufficiently after being lifted along the baffle. , a washing liquid storage outer tank formed to surround the rotating drum and provided with a washing liquid level adjustment mechanism that can immerse the laundry in the rotating drum at the minimum necessary water level; and a part of the washing liquid in the outer tank. A rotating drum type washing machine, comprising: piping for circulation of cleaning liquid and a circulation pump for extracting cleaning liquid and jetting it into the rotating drum through the cleaning jet nozzle. (2) The rotary drum type according to claim 1, wherein the plurality of baffle plates are arranged at equal intervals in the circumferential direction of the inner circumferential surface of the cylindrical portion of the rotary drum, alternately biased toward both side surfaces of the rotary drum. washing machine. (3) The rotary drum type washing machine according to claim 1, further comprising a water level gauge that allows the washing liquid level in the outer tub to be checked from the front of the washing machine. (4) The rotating drum type washing machine according to claim 1, wherein the rotating drum rotates in a fixed direction.