JPH07289785A - Washing machine with spin-drier - Google Patents

Abstract

PURPOSE:To effectively collect lint generated in a washing drum. CONSTITUTION:Washing water is sucked by a circulation pump 12 from a gap between an agitator 10 and a drum 9 and the bottom of an outer drum 3 and is circulated to a lint collecting filter 16 to collect the lint, thereby enabling the generated lint to be effectively collected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dewatering washing machine, and more particularly to improving the collection performance of a cloth dust collecting means for collecting cloth dust and thread dust (hereinafter referred to as cloth dust) floating in washing water. .

[0002]

2. Description of the Related Art A fully automatic washing machine equipped with a cloth dust collecting means is
For example, as disclosed in Japanese Utility Model Application Laid-Open No. 59-171684, the back blade integrally formed on the back side of the rotary blade sucks the washing water at the bottom of the outer tub to form a cloth collecting net. By feeding the cloth, the cloth collecting net collects the cloth contained in the washing water.

The rotary blade is installed so as to close a recess formed in the central portion of the bottom wall of the washing tub and defines the recess as a pump chamber, and the washing water at the bottom of the outer tub is introduced from the suction hole formed in the bottom wall of the recess. Is sucked, and is sent from a discharge hole formed in the side wall of the recess to a cloth collecting net installed at the tip of the water guiding passage (upper body of the washing tub) through the water guiding passage formed in the washing tub body.

[0004]

In order to efficiently collect the cloth debris in the washing water by such cloth debris collection means, the thread debris generated in the washing tub efficiently moves to the bottom of the outer tub. In particular, it is desirable that the washing water pressurized in the pump chamber be efficiently sent to the cloth dust collecting net and circulate through the cloth dust collecting net without leakage.

However, in the conventional fully automatic washing machine,
There is a lack of ideas for efficiently guiding the cloth waste generated in the washing tub to the bottom of the outer tub, and in order to efficiently circulate the washing water at the bottom of the washing tub where the cloth waste settles to the cloth collecting net. Lack of ingenuity.

Therefore, an object of the present invention is to provide a cloth dust collecting means for efficiently collecting the cloth dust generated in the washing tub.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to an outer tub, a washing tub provided in the outer tub and having a dehydration hole also serving as a dehydration tub, and a rotary blade provided at the center of the bottom of the washing tub. And a drive device for rotating the rotary vane and / or the washing tub, and a cloth debris collector for circulating the washing water at the bottom of the outer tub to a cloth debris collection unit to collect the cloth debris contained in the washing water. In the washing machine including means, the cloth waste collecting means is provided with a circulation pump for sucking washing water from a lower portion of the rotary vane at a bottom portion of the washing tub and an outer tub bottom portion, The circulation pump includes a bottom wall recess formed in the bottom wall of the washing tub, a pump chamber defined by a casing fitted in the bottom wall recess, and a drive shaft for rotating the rotary vane. The casing is provided with an impeller that is driven to rotate in the pump chamber. And a suction port for penetrating the drive shaft and for sucking washing water in a lower portion of the rotary blade, wherein the impeller is provided with blades protruding from both sides of the disk-shaped base body. Characteristically, or in the circulation pump, a bottom wall recess formed in the bottom wall of the washing tub, a pump chamber defined by a casing fitted in the bottom wall recess, and rotating the rotary blade. An impeller that is driven by one drive shaft to rotate in the pump chamber, and the casing that penetrates the first drive shaft and sucks the wash water in the lower part of the rotary blade. With a suction port,
A suction port formed to suck the washing water at the bottom of the outer tub is provided at the connecting portion of the bottom wall recess to which the second drive shaft for rotating the washing tub is connected.

[0008]

Most of the cloth dust is generated by the mechanical action of the rotary blades on the laundry, and while moving along with the water flow formed by the rotary blades, a part of the cloth dust settles at the bottom of the washing tub. ,
A part is discharged from the dehydration hole of the washing tub to the outside of the washing tub and reaches the bottom of the outer tub. The cloth dust collecting means collects the cloth dust contained in the washing water by circulating the washing water at the bottom of the outer tub to the cloth dust collecting portion by the circulation pump, and also from the gap below the rotary blade. Since the washing water is also sucked in and circulated, the generated cloth waste can be efficiently collected.

[0009]

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

1 and 2 show an embodiment of a fully automatic washing machine according to the present invention. FIG. 1 is a vertical sectional side view, and FIG. 2 is a cross-sectional plan view of essential parts showing a wash water circulation channel.

In FIG. 1, the exterior is composed of an outer frame 1 and a lid 2 and the like which is openably and closably attached to an upper edge portion thereof. The outer tub 3, which is a water receiving tub, is provided with a tub cover 3a at its upper edge portion, and is supported in a suspended state in the outer rim 1 from the upper four corners of the outer rim 1 by suspension rods 4b via buffer members 4a. The washing water in the washing step and the rinsing water in the rinsing step (hereinafter referred to as washing water) are stored.

A drive motor 6 attached to a drive unit base 5 installed on the outer side of the bottom wall of the outer tub 3 is connected by a belt 8 and a transmission device 7 which is a combination of a gear reduction mechanism and a clutch mechanism. Concentric double output shafts 7a, 7
b penetrates the bottom wall of the outer tub 3 in a watertight state and projects into the outer tub 3. The transmission device 7 rotates the inner output shaft 7a forward and backward at a low speed of 100 to 150 rpm while keeping the outer output shaft 7b stationary in the washing process and the rinsing process,
In the dehydration step, the inner and outer output shafts 7a and 7b are rotated together at a high speed of 700 to 1000 rpm.

The washing tub 9 is mainly composed of a bottom wall portion 9a and a body portion 9b, and a bottom wall recess 9c for constituting a circulation pump 12 for collecting cloth debris is formed in a central portion of the bottom wall portion 9a. The balancer 9d is formed on the upper edge of the body 9b. A hub 11 coupled to the outer output shaft 7b is joined to the outer surface of the bottom wall recess 9c of the washing tub 9 and is integrally joined by a screw, a rivet or the like. The washing tub 9 is provided with suction ports 9f and 11a formed so as to penetrate the bottom wall recess 9c and the hub 11 and with a uniform distribution on the entire circumferential surface of the body 9b. A discharge hole 9e is provided.

A casing 14 is provided in the bottom wall recess 9c so as to block the bottom wall recess 9c and define a pump chamber forming space below the rotary blade 10 coupled to the shaft end of the inner output shaft 7a. Be inserted. This casing 14 is a partition wall 1.
4a and the suction port 14b which penetrates the inner output shaft 7a and sucks washing water from the space below the rotary blade 10.
And a cylindrical portion 14c fitted into the bottom wall recess 9c and a discharge port 14d for discharging pressurized washing water. The bottom wall recess 9c of the washing tub 6 is fitted into the bottom wall recess 9c so as to face the bottom wall. Recess 9
A pump chamber is formed in c. The impeller 13 is a disc-shaped base 1
3a is a structure in which blades 13b and 13c are provided on both sides, and is fixed in the middle of the inner output shaft 7a to rotate in the pump chamber to pressurize the washing water sucked from the suction ports 9f, 11a and 15b. From the discharge port 14d to the water conduit 13
send to a.

A partition wall 15 is provided between the discharge port 14d of the casing 14 and the inner wall surface of the washing tub 9 so as to be in close contact therewith and to the upper edge of the body 9b. The water passage 15a is formed, and a bag-like cloth dust collecting filter 1 made of a fine mesh cloth is formed at the outflow port 15b formed at the upper end thereof.
6 is installed detachably.

A drain port 3b formed on the bottom wall of the outer tank 3
Is connected to a drain hose 18 via a drain solenoid valve 17 to form a drain system, and an intermittent operation of a clutch mechanism in the transmission device 7 for switching a power transmission mode to the inner and outer output shafts 7a and 7b is performed. This is performed by the solenoid coil 19. Since the water supply system is the same as that of the conventional fully automatic washing machine, its illustration is omitted and the operation control of the drive motor 6, the control of the water supply / drainage system, and the control of the solenoid coil 18 for operating the transmission device 7 are performed. Since the same applies to the apparatus, the illustration and description thereof will be omitted.

In the above construction, in the washing process or the rinsing process, the washing water of a predetermined water level is held in the outer tub 3, and the rotary wing 10 is kept at 100 to 1 while the washing tub 9 is kept stationary.
It is driven by the drive motor 6 so as to repeat forward rotation and reverse rotation at a low speed of 50 rpm in a short cycle. At this time, the rotation direction of the rotary blade 10 is determined by the rotation direction of the drive motor 6, and the transmission device 7 decelerates the rotation of the drive motor 6 and transmits it only to the inner output shaft 7a to rotate the rotary blade 10 at a low speed. Works like.

In this washing or rinsing step, the laundry is stirred or rubbed by the rotation of the rotary blades 10 to be washed or rinsed. Then, the cloth waste generated in the washing process or the rinsing process is mixed with the wash water and moves together with the wash water.

In the washing tub 9, the washing water is mixed with the rotating blade 1
Rotation of 0 urges the lower part of the washing tub 9 in which the rotary blades 10 are located to move radially outward, collides with the lower part of the body part 9b, and follows the inner surface of the body part 9b. Turn to rise.

When the inner output shaft 7a rotates to rotate the rotary blades 10, the impeller 13 of the circulation pump 12 rotates, and the pumping action of the blades 13a and 13b pressurizes the wash water in the pump chamber and discharges it. It is discharged from the outlet 14d to the water conduit 15a, rises in the water conduit 15a and flows out from the outflow port 15b to the cloth dust collecting filter 16, where the cloth dust is collected and returned to the washing tub 9. Then, the washing water at the bottom of the outer tub 3 is sucked into the pump chamber through the suction ports 9f and 11a together with the cloth dust, and the bottom also serves as the dehydration / cloth dust discharge hole 9e.
The washing water containing the cloth waste flows into the washing tub 9 through.

In a general washing machine, a relatively large gap is formed between the outer peripheral edge of the rotary wing 10 and the bottom wall 9a of the washing tub 9 in order to avoid contact between them due to manufacturing errors and aging. There is a problem that the washing water is ejected by the pump action due to the rotation of the bottom surface of the rotary blade 10 to diffuse the cloth waste that has settled on the bottom wall of the washing tub 9. However, in this embodiment, since the circulation pump 12 acts so as to suck the washing water also from the suction port 14b, the washing water located at the bottom of the washing tub 9 is present in the lower gap of the rotary blade 10. As a result of being sucked in, the cloth waste that has settled on the bottom of the washing tub 9 can be prevented from diffusing and sucked into the pump chamber and sent out to the water conduit 15a.

In such a wash water circulation, in the disk-shaped base body 13a of the impeller 13 of the circulation pump 12, the blade 13b sucks the wash water from the suction port 14b, and the blade 13
It assists c to suck the wash water from the suction ports 9f and 11a, and prevents the circulation of the wash water circulation flow.

In the dehydration step after the washing step and the rinsing step,
By opening the drainage solenoid valve 17 to drain the wash water in the outer tub 3, the wash water in the wash tub 9 also has holes 9e, 14b, 9a.
Drained out of the tank through f and 11a. Then, by switching the transmission device 7 by the solenoid coil 19 and transmitting the rotation of the drive motor 6 to the inner and outer output shafts 7a and 7b at high speed, the washing tub 9 and the rotating blade 10 are integrally rotated at high speed. As a result, the washing water contained in the laundry is centrifugally dehydrated.

[0024]

Most of the cloth waste is generated by the mechanical action of the rotary blades on the laundry, and while moving along with the water flow formed by the rotary blades, the spinneret dehydrates and the cloth waste discharge holes of the washing tub. Is discharged to the outside of the washing tub and reaches the bottom of the outer tub, or is deposited on the bottom of the washing tub. The circulation pump in the cloth dust collecting means sucks the washing water from the gap between the rotary blade and the washing tub 9 and the bottom of the outer tub and circulates the washing water in the cloth dust collecting portion to collect the generated cloth dust efficiently. The effect of being able to collect well is obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a fully automatic washing machine according to the present invention.

FIG. 2 is a cross-sectional plan view of essential parts showing a wash water circulation channel in the fully automatic washing machine shown in FIG.

[Explanation of symbols]

3 ... Outer tub, 6 ... Drive motor, 7 ... Transmission device, 9 ... Laundry tub, 9b ... Body part, 9c ... Bottom wall recess, 9e ... Dehydration and cloth waste discharge hole, 9f, 11a ... Suction port, 10 ... Rotation Tsubasa, 12 ...
Circulation pump, 13 ... Impeller, 14 ... Casing, 14b
... Suction port, 15a ... Water conduit, 16 ... Cloth dust collecting filter ,.

Front page continuation (72) Inventor Shiro Obayashi 502 Jinritsucho, Tsuchiura-shi, Ibaraki Machinery Research Institute, Hiritsu Seisakusho Co., Ltd. In-house (72) Inventor Soichi Fukuzawa, 502 Kintate-cho, Tsuchiura City, Ibaraki Prefecture

Claims (5)

[Claims] 1. An outer tub, a washing tub disposed in the outer tub and having a dehydration hole which also serves as a dewatering tub, a rotary wing provided at the center of the bottom of the washing tub, and the rotary wing and / or A washing machine comprising: a drive device for rotating a washing tub; and a cloth dust collecting means for circulating the washing water at the bottom of the outer tub to a cloth dust collecting portion to collect the cloth dust contained in the washing water. A dewatering washing machine, wherein the cloth dust collecting means includes a circulation pump for sucking washing water from a lower portion of the rotary blade and an outer tub bottom portion at a bottom portion of the washing tub. 2. The circulation pump according to claim 1, wherein the circulation pump includes a bottom wall recess formed in a bottom wall of the washing tub, a pump chamber defined by a casing fitted in the bottom wall recess, and the rotation chamber. A dewatering washing machine comprising an impeller that is driven by a drive shaft that rotates a blade and that rotates in the pump chamber. 3. The dewatering washing machine according to claim 2, wherein the casing has an inlet for penetrating the drive shaft and sucking washing water in a lower portion of the rotary blade. 4. The dewatering washing machine according to claim 2, wherein the impeller includes blades protruding from both sides of a disk-shaped substrate. 5. The circulation pump according to claim 1, wherein the circulation pump has a bottom wall recess formed in a bottom wall of the washing tub, a pump chamber defined by a casing fitted in the bottom wall recess, and the rotary chamber. An impeller that is driven by a first drive shaft that rotates a blade to rotate in the pump chamber, and the case that penetrates the first drive shaft and sucks the wash water in the lower side portion of the rotary blade. And a suction port formed to suck the washing water at the bottom of the outer tub into the coupling portion of the bottom wall recess to which the second drive shaft for rotating the washing tub is coupled. A dehydration washing machine characterized by that.