JPH10263282A - Drum type washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely feed detergent into a rotary drum by forming a water pouring mouthpiece opening part whose one end communicates with a detergent case and other end is opened in the front surface opening part direction of the rotary drum, at an almost cylindrical packing member connecting the opening part of an outer tank and the front surface opening part of a body. SOLUTION: After feeding laundry into the rotary drum 1 and turning on a power source switch, when a start switch is operated and an operation is started, a water supply valve 20 is operated and water is supplied. At the time, the water is passed through a water supply hose 34, a detergent case 35 and a water pouring hole 36 and poured onto a detergent feeding box 37 and the detergent on the detergent feeding box 37 is made to flow down on the detergent feeding box 37 along with the water. Then, it is made to reach an almost cylindrical water pouring mouthpiece part 41 passed through the upper cylinder part of the packing member 40 connecting the opening part of the outer tank 3 and the front surface opening part of the body 8 through the water supply hose 39, discharged from the water pouring mouthpiece opening part 42 provided on the lower part of the water pouring mouthpiece part 41 and made to flow into the rotary drum 1 through the front surface opening part 13 of the rotary drum 1.

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 for washing, rinsing, and dewatering laundry in a drum rotatably disposed about a substantially horizontal rotation axis.

[0002]

2. Description of the Related Art Conventionally, this type of drum type washing machine has been configured as shown in FIG. Hereinafter, the configuration will be described.

[0003] As shown in FIG. 6, a rotary drum 1 has a large number of water passage holes 2 provided on the entire outer peripheral portion thereof, and is rotatably disposed in an outer tank 3. One end of the rotating shaft 4 is fixed to the rotation center of the rotating drum 1 in a substantially horizontal direction, and a drum pulley 5 is fixed to the other end of the rotating shaft 4. The drive motor 6 is connected to the drum pulley 5 by a belt 7 and drives the drum 1 to rotate.

The outer tub 3 is swingably suspended from the body 8 by a spring body 9, the vibration at the time of dehydration start is reduced by the vibration damper 10, and the vibration during the steady dehydration is prevented from being transmitted to the body 8. A weight 11 is provided to support vibration and reduce vibration during dehydration. Substantially cylindrical packing member 1
2 is an outer tub 3 corresponding to the front opening 13 of the rotary drum 1
The opening 14 and the body front opening 15 are connected to each other. A lid 16 is provided in the body front opening 15 so as to be openable and closable.

A heater 17 is provided on the bottom side of the outer tub 3 to heat the washing water in the outer tub 3, one end of a drainage hose 18 for drainage is connected, and the other end of the drainage hose 18 is connected to a drainage pump 19. To drain the washing water in the outer tub 3.

[0006] One end of a first water supply hose 21 is connected to the water supply valve 20, and the other end of the first water supply hose 21 is connected to a detergent case 22.
The lower end of the detergent case 22 is connected to one end of a second water supply hose 23, and the other end of the second water supply hose 23 is connected to the outer tub 3 to supply water into the outer tub 3. .

On the upper surface of the detergent case 22, there are provided a plurality of water injection holes 24 for discharging water in a shower shape, and the shower water discharged from the water injection holes 24 falls onto the detergent on the detergent input box 25,
It flows down into the outer tank 3 together with the detergent. The control device 26
Drive motor 6, heater 17, drain pump 19, water supply valve 2
Operation such as 0 is controlled, and a series of processes such as washing, rinsing, and dehydration are sequentially controlled.

A substantially transparent window glass 27 is provided on the cover 16 on the side of the front opening 13 of the rotary drum 1.
Reference numeral 7 functions to push the laundry in the rotary drum 1 inward.

The operation of the above configuration will be described.
6, the laundry is put into the rotating drum 1, the power switch (not shown) is turned on, and the operation is started by operating a start switch (not shown) provided in the control device 26. The valve 20 is operated to supply water and detergent, and when a predetermined water level is detected by a water level detecting means (not shown), the water supply is stopped and the drive motor 6 is driven. In the washing process, the rotating drum 1 is rotated at a first rotation speed N1 by the drive motor 6 while replenishing water because the laundry contains water, and the laundry in the rotating drum 1 is lifted up onto the water surface. Be dropped.

At this time, the heater 17 is energized to heat the washing water in the outer tub 3 while controlling it at a substantially constant temperature. When the washing process is completed, the drain pump 19 operates to operate the outer tub 3.
Drain the washing water inside. The same operation as the washing process is performed in the rinsing process.

In the dehydration step, the rotary drum 1 is driven to rotate at a second rotation speed N2 by the drive motor 6, and the laundry is centrifugally dehydrated. At this time, when the laundry in the rotating drum 1 is shifted, that is, imbalance occurs, the swinging members such as the rotating drum 1 and the outer tub 3 vibrate. Is not transmitted to the body 8 by the vibration isolating mechanism of the vibration isolating damper 10 during steady dehydration.

[0012]

In such a conventional construction, the water and detergent introduced are supplied to the rotary drum 1 and the outer tub 3.
As a result, the detergent falls directly into the drain hose 18 and flows out, so that the detergent is not effectively used at the time of washing and the washing performance is deteriorated.

As a solution to this problem, a method is conceivable in which a valve is provided at the connection between the outer tub 3 and the drain hose 18 so that the detergent does not flow out when water is supplied, but the structure becomes complicated.
There was a problem that the cost was increased.

A method of supplying water from a substantially upper part of a substantially cylindrical packing member 12 connecting between an opening 14 of the outer tub 3 corresponding to the front opening 13 of the rotary drum 1 and the front opening 15 of the body. It is conceivable that, in this method, the water and detergent that have been introduced fall onto the upper part of the window glass 27 of the lid 16, and the detergent flows down the window glass 27 and the packing member 1.
2 fall and accumulate in the lower bellows portion 28, do not dissolve during washing, but gradually dissolve during rinsing and dehydration, thus deteriorating the washing performance and rinsing performance. Further, there is also a problem that the detergent dropped on the window glass 27 adheres to the window glass 27 as it is and remains after washing is completed.

An object of the present invention is to solve the above-mentioned conventional problems and to improve the washing performance and the rinsing performance by effectively using the detergent by reliably feeding the detergent into the rotating drum.

[0016]

SUMMARY OF THE INVENTION In order to achieve the above object, according to the present invention, a rotating drum having a rotating shaft in a substantially horizontal direction is wrapped around an outer tub, and the rotating drum is rotated by a drive motor during washing and spin-drying. In addition, water is injected only into the rotary drum from a water injection mouth that penetrates an upper body of a substantially cylindrical packing member that connects an opening of the outer tub and a front opening of the body.

As a result, the detergent can be surely put into the rotating drum, so that the detergent can be effectively used, and the washing performance and the rinsing performance can be improved. Also,
It is also possible to prevent a problem that the detergent dropped on the window glass adheres to the window glass as it is and remains after washing is completed.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention provides a rotating drum having a rotating shaft in a substantially horizontal direction, an outer tub enclosing the rotating drum, and the rotating drum during washing and spin-drying. A drive motor for rotating, a control means for controlling the number of revolutions of the drive motor, a body for oscillatingly accommodating a rocking body mainly composed of the outer tub, and an outer tub corresponding to a front opening of the rotary drum A substantially cylindrical packing member connected between the opening and the front opening of the body, and a detergent input case for inputting a detergent at the start of washing, one end of the packing member being in communication with the detergent case. And
The other end forms a water inlet opening that opens in the direction of the entire opening of the rotating drum, and a water inlet that penetrates the upper body of the packing member is provided.From the water opening, the front opening of the rotating drum passes through the opening. The water is injected only toward the inside of the rotary drum.

According to this configuration, the water can be injected only toward the inside of the rotating drum, and the detergent can be reliably injected into the rotating drum. Therefore, the detergent can be effectively used, and the washing performance and the rinsing performance can be improved. Can be improved.
In addition, it is possible to prevent a problem that the detergent dropped on the window glass adheres to the window glass as it is and remains after washing is completed.

The second aspect of the present invention is the first aspect.
In addition to the invention described in the above, the water inlet is provided with a substantially flat portion at the lowermost portion thereof and a water inlet opening opening toward the front opening of the rotary drum at an end of the substantially flat portion. At the end opposite to the mouth opening, a first inclined surface is provided which is inclined so as to become lower toward the water inlet opening, and the first inclined surface is provided on both sides of the first inclined surface. It is provided with a second inclined surface inclined so as to become lower toward, when water is discharged from the water inlet opening, it is possible to concentrate water inside the water inlet opening near the center of the water inlet opening. As a result, the water and the detergent can be surely blown away, so that the detergent can be reliably charged into the rotating drum, and the washing performance and the rinsing performance can be improved. In addition, it is possible to prevent a problem that the detergent dropped on the window glass adheres to the window glass as it is and remains after washing is completed.

The third aspect of the present invention is the first aspect of the present invention.
In addition to the invention described in the second aspect, the control means has a cloth attaching step of starting up to a predetermined rotation speed without supplying water to the rotary drum, and then reducing the rotation speed to a rotation speed lower than the predetermined rotation speed. Water is supplied in number, even if the laundry is packed full in the rotating drum, the laundry is made into a donut shape by the cloth pasting process,
Since the detergent is injected into the central cavity, the detergent can be reliably injected into the rotating drum, and the washing performance and the rinsing performance can be improved. In addition, it is possible to prevent a problem that the detergent dropped on the window glass adheres to the window glass as it is and remains after washing is completed.

The invention according to claim 4 of the present invention is the invention according to claim 3.
In addition to the described invention, the low rotation speed is set to be higher than the rotation speed during the washing process and smaller than the rotation speed during the spin-drying rotation, and the rotation speed is high while reliably maintaining the laundry in a donut shape. In this case, it is possible to prevent the washing water from hitting the laundry.

The invention according to claim 5 of the present invention is the invention according to claim 1.
In addition to the invention described in the above 2, in addition to supplying a predetermined amount of water at the start of washing, the detergent is added, and even if the laundry is completely filled in the rotating drum, the laundry is supplied by the first water supply. , And the detergent is put on the pushed-down laundry, so that the detergent can be surely put into the rotating drum, and the washing performance and the rinsing performance can be improved. In addition, it is possible to prevent a problem that the detergent dropped on the window glass adheres to the window glass as it is and remains after washing is completed.

[0024]

Embodiments of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

(Embodiment 1) As shown in FIG. 1, a first motor (drive motor) 29 rotates a rotating drum 1 at a first rotation speed N1 (for example, 53 rpm) to perform washing or rinsing. The second motor (drive motor) 30 rotates the rotary drum 1 at a second rotation speed N2 (for example, 1000 rpm) to perform dehydration. The first motor 29 and the second motor 30 are constituted by induction motors, and are connected to driven pulleys 33 via belts 31 and 32, respectively.

The driven pulley 33 has two kinds of reduction ratios. The first motor 29 is connected via a belt 31 to a driven pulley 33a having a large reduction ratio.
0 to the driven pulley 3 with a small reduction ratio via the belt 32
3b, and is fixed to the other end of the rotating shaft 4 having one end fixed to the rotation center of the rotating drum 1.

One end of a first water supply hose 34 is connected to the water supply valve 20, and the other end of the first water supply hose 34 is connected to a detergent case 35.
Connected to The upper surface of the detergent case 35 has a plurality of water injection holes 36 for discharging water in a shower shape, and the shower-like water discharged from the water injection hole 36 falls onto the detergent on the detergent input box 37, and the detergent case together with the detergent. It flows out from the lower outlet 38 of 35. One end of a second water supply hose 39 is connected to the lower outlet 38, and the other end of the second water supply hose 39 is formed substantially integrally with the packing member 40, and is a substantially cylindrical water inlet that penetrates the upper body of the packing member 40. It is connected to the unit 41. A water inlet opening 42 is provided below the water inlet 41 in the direction of the front opening 13 of the rotary drum 1.

FIG. 2 shows the shape near the water inlet opening 42.
This will be described with reference to (a) and (b). A substantially flat portion 43 is provided at a lower portion of the water injection base 41, and a water injection opening 42 is provided at one end of the substantially flat portion, and the other end is lowered toward the water injection opening 42 at the other end. An inclined first inclined surface 44 is provided, and on both sides of the first inclined surface 44, a second inclined surface 45 inclined so as to become lower toward the first inclined surface is provided.

The control unit 46 includes the heater 17, the water supply valve 2,
0, the operations of the first motor 29, the second motor 30, and the like are controlled, and a series of processes such as washing, rinsing, and dehydrating are sequentially controlled.

The operation of the above configuration will be described.
6, the laundry is put into the rotating drum 1, the power switch (not shown) is turned on, and the operation is started by operating a start switch (not shown) provided in the control device 46. The valve 20 operates to supply water. Water supply valve 20
Through the first water supply hose 34 connected to the
5, and flows into a shower-like box 37 through a plurality of water injection holes 36 provided on the upper surface of the detergent case 35 and is poured into the detergent box 37. The detergent on the detergent box 37 is removed together with the shower-like water. It flows down on the input box 37 and the detergent case 3
5 flows out from the lower outlet 38. Further, the water and the detergent that flowed out from the lower outlet 38 reach a substantially cylindrical water inlet base 41 penetrating through the upper body of the packing member 40 via the second water supply hose 39, and are provided below the water inlet base 41. The water is discharged from the water inlet opening 42 and falls into the rotating drum 1 through the front opening 13 of the rotating drum 1.

The flow of water inside the water inlet 41 is shown in FIG.
(A), the water near the center flows along the first inclined surface 44, and the water near both sides first flows on the second inclined surface 45, and then flows on the first inclined surface 45. It joins the flow of surface 44. Thereby, the flow of water is strengthened, and the water flows into the substantially flat portion 43 at one time, and the water having the momentum by the first inclined surface 44 and the second inclined surface 45 substantially passes through the substantially flat portion 43. It jumps like a ski jump in the horizontal direction and falls only inside the rotating drum 1. When the water is caused to fly in a substantially horizontal direction in this manner, it is possible to minimize a decrease in the momentum of the water due to gravity, and to make the water fly far. Because of the splash of water, the detergent can be reliably introduced into the rotating drum 1, so that the detergent can be effectively used, and the washing performance and the rinsing performance can be improved.

Further, since the detergent does not drop onto the window glass 27, it is possible to prevent a problem that the detergent adheres to the window glass 27 and remains after washing.

(Embodiment 2) Even when Embodiment 1 is performed,
When a large amount of laundry is put in, there are the following problems. In FIG. 3, most of the detergent discharged from the water inlet opening 42 falls on the window glass 27 or travels along the surface of the window glass 27 or between the laundry and the window glass 27 as shown by an arrow. , Fall on the lower inner surface of the packing member 40 and accumulate in the lower bellows portion 47. As a result, the detergent cannot be used effectively, and the washing performance and the rinsing performance deteriorate. Further, since the detergent falls on the window glass 27, the detergent adheres to the window glass 27 and remains after washing. Such a problem occurs. This embodiment solves the above problem. This embodiment will be described below with reference to FIG.

After the window 16 is opened and the laundry is almost completely filled into the rotary drum 1, a power switch (not shown) is turned on, and a start switch (not shown) provided in the control device 46 is operated. When the water supply valve 40 starts operating, the second motor 30 (drive motor) drives the rotating drum 1 at a third rotation speed higher than the first rotation speed N1 and lower than the second rotation speed N2 before the water supply valve 40 operates. The rotation is performed at a rotation speed N3 (for example, 600 rpm). At this rotation speed, the laundry becomes donut-shaped as shown in FIG. 4, and a cavity 48 is formed at the center. Next, the second motor 30 is turned off, the rotation speed of the rotary drum 1 is reduced, and the first motor 29 (drive motor) does not break the donut state of the laundry, and the fourth hollow section 48 in which the central hollow section 48 exists. At the rotation speed N4 (for example, 80 rpm).

In the above cloth attaching process, the water supply valve 40 operates at the fourth rotation speed N4 to start water supply.
At this time, the water and the detergent are introduced into the cavity 48 at the center of the laundry as shown by the arrow in FIG. As a result, the detergent is surely put on the laundry in the rotating drum, so that the washing performance and the rinsing performance can be improved.
In addition, it is possible to prevent a problem that the detergent dropped on the window glass adheres to the window glass as it is and remains after washing is completed.

(Embodiment 3) In FIG. 5, the same components as those in Embodiment 1 are denoted by the same reference numerals, and description thereof is omitted. A water supply path change valve 49 is provided in the middle of the water supply path near the connection between the detergent case 35 and the first water supply hose 34, and the control device 46 controls the water supply path change valve 49.

After the window 16 is opened and the laundry is almost fully charged into the rotary drum 1, a power switch (not shown) is turned on, and a start switch (not shown) provided in the control device 46 is operated. When the operation starts, the water supply path change valve 49
Closes the entrance of the upper water supply path 51 so that water flows to the lower water supply path 50 side. As a result, only water falls inside the rotary drum 1. Due to this water, the volume of the laundry in the rotating drum 1 is reduced, and a cavity is formed in the rotating drum 1 upward.

Thereafter, the water supply path changing valve 49 closes the entrance of the lower water supply path 51 so that water flows to the upper water supply path 51 side. As a result, the water passes through the water supply path 51, passes through a plurality of water injection holes 36 provided on the upper surface of the detergent case 35, takes a shower shape, and is poured onto the detergent input box 37. It flows down on the input box 37, flows out from the lower outlet 38 of the detergent case 35, and falls into the cavity above the laundry. As a result, the detergent is surely put on the laundry in the rotating drum, so that the washing performance and the rinsing performance can be improved. In addition, it is possible to prevent a problem that the detergent dropped on the window glass adheres to the window glass as it is and remains after washing is completed.

[0039]

As described above, according to the first aspect of the present invention, a rotating drum having a rotating shaft in a substantially horizontal direction, an outer tub that encloses the rotating drum, A drive motor for rotating the rotary drum, control means for controlling the number of rotations of the drive motor, a body for swingably containing a rocking body mainly composed of the outer tub, and a front opening of the rotary drum. A substantially cylindrical packing member connected between the opening of the corresponding outer tub and the front opening of the body, and a detergent input case for inputting a detergent at the start of washing, wherein one end of the packing member has the aforementioned The other end forms a water inlet opening that opens in the direction of the entire opening of the rotating drum, and the other end forms a water inlet opening that penetrates the upper body of the packing member. Before Since the water is injected only toward the inside of the rotary drum through the opening, the detergent can be reliably injected into the rotary drum by performing the water injection only toward the inside of the rotary drum, so that the detergent is effective. It is possible to improve the washing performance and the rinsing performance. Also,
It is also possible to prevent a problem that the detergent dropped on the window glass adheres to the window glass as it is and remains after washing is completed.

According to the second aspect of the present invention, the water inlet has a substantially flat portion at its lowermost portion and an opening at the end of the substantially flat portion in the direction of the front opening of the rotary drum. Provided, a first inclined surface is provided at an end of the substantially flat portion opposite to the water inlet opening, and is provided with a first inclined surface inclined toward the water inlet opening, and a first inclined surface of the first inclined surface is provided. Since both sides are provided with a second inclined surface inclined so as to become lower toward the first inclined surface, when water is discharged from the water inlet opening, water inside the water inlet is injected. Since it can be concentrated near the center of the opening of the mouthpiece, it is possible to reliably blow water and detergent far away, so that detergent can be reliably injected into the rotating drum, and washing performance,
Rinsing performance can be improved. In addition, it is possible to prevent a problem that the detergent dropped on the window glass adheres to the window glass as it is and remains after washing is completed.

According to the third aspect of the present invention, the control means starts up the rotating drum to a predetermined rotation speed without supplying water to the rotating drum, and then drops the rotation drum to a rotation speed lower than the predetermined rotation speed. It has a stroke and supplies water at the low rotation speed, so that even when the laundry is fully packed in the rotating drum, the laundry is put into a donut shape by the cloth attaching process, and the detergent is placed in the center cavity of the laundry. , The detergent can be reliably injected into the rotating drum, and the washing performance and the rinsing performance can be improved. In addition, it is possible to prevent a problem that the detergent dropped on the window glass adheres to the window glass as it is and remains after washing is completed.

According to the fourth aspect of the present invention, the low rotation speed is set to be higher than the rotation speed during the washing process and lower than the rotation speed during the spin-drying rotation. , It is possible to prevent the washing water from colliding with the laundry caused when the rotation speed is high.

According to the invention as set forth in claim 5, the drum type washing machine according to claim 1 or 2, wherein a detergent is added after a predetermined amount of water is supplied at the time of starting the washing. Even if the laundry is completely packed in the rotating drum, the laundry is pushed down and sunk by the first water supply, and the detergent is poured into the rotating drum in order to put the detergent on the pushed down laundry. The washing performance and the rinsing performance can be improved. In addition, it is possible to prevent a problem that the detergent dropped on the window glass adheres to the window glass as it is and remains after washing is completed.

[Brief description of the drawings]

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

FIG. 2A is a perspective view of a main part of the drum type washing machine with a part cutaway. FIG. 2B is a front view of a main part of the drum type washing machine with a part cutout.

FIG. 3 is a sectional view of a main part of the drum type washing machine.

FIG. 4 is a diagram illustrating a state of laundry after a sticking process of the drum type washing machine according to the second embodiment of the present invention.

FIG. 5 is a sectional view of a drum type washing machine according to a third embodiment of the present invention.

FIG. 6 is a sectional view of a conventional drum-type washing machine.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rotating drum 3 outer tub 29 first motor (drive motor) 30 second motor (drive motor) 35 detergent case 40 packing member 41 water injection cap 42 water injection cap opening

Claims (5)

[Claims] 1. A rotating drum having a rotating shaft in a substantially horizontal direction, an outer tub enclosing the rotating drum, a driving motor for rotating the rotating drum during washing and spin-drying, and controlling the number of rotations of the driving motor. Control means, a body accommodating a rocking body mainly composed of the outer tank, and a connection between the opening of the outer tank corresponding to the front opening of the rotary drum and the front opening of the body. A packing member having a substantially cylindrical shape, and a detergent supply case for supplying a detergent at the start of washing. One end of the packing member communicates with the detergent case, and the other end opens toward the entire opening of the rotary drum. A water injection mouth opening is formed, and a water injection mouth portion is provided to penetrate the upper body of the packing member, and water is injected only from the water injection opening toward the inside of the rotary drum through the front opening of the rotary drum. Drum type washing machine. 2. A water inlet having a substantially flat portion at a lowermost portion thereof and an end of the substantially flat portion provided with an opening toward a front opening of the rotary drum, wherein the water inlet is provided with a substantially flat portion. At the end opposite to the opening, a first inclined surface is provided which is inclined so as to be lowered toward the water inlet opening, and the first inclined surface is provided on both sides of the first inclined surface. The drum type washing machine according to claim 1, further comprising a second inclined surface inclined so as to become lower toward the drum. 3. The control means has a cloth attaching step of starting up to a predetermined rotation speed without supplying water to the rotary drum and then lowering the rotation speed to a rotation speed lower than the predetermined rotation speed. 3. The drum type washing machine according to claim 1, wherein the washing is performed. 4. The drum-type washing machine according to claim 3, wherein the low rotation speed is set to be higher than the rotation speed during the washing process and lower than the rotation speed during the spin-drying operation. 5. The drum type washing machine according to claim 1, wherein a predetermined amount of water is supplied at the start of washing, and then the detergent is added.