JP3031405B2 - Dehydration washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art A fully automatic washing machine provided with a cloth waste collecting means is:
For example, as disclosed in Japanese Utility Model Laid-Open Publication No. 59-171684, the pumping action of the back blade integrally formed on the back side of the rotor blade sucks the washing water at the bottom of the outer tub and causes the net to collect the cloth dust. By sending the cloth, the cloth dust contained in the washing water is collected by the cloth collecting net.

[0003] Rotor blades are installed so as to cover a recess formed in the center of the bottom wall of the washing tub, partition the recess as a pump chamber, and use a suction hole formed in the bottom wall of the recess to wash the washing water at the bottom of the outer tub. Is sucked, and is sent from a discharge hole formed in the side wall of the concave portion through a water conduit formed in the body of the washing tub to a cloth collecting net installed at the end of the water conduit (the upper part of the body of the washing tub).

[0004]

In order to efficiently collect the cloth waste in the washing water by such a cloth collecting means, the lint generated in the washing tub efficiently moves to the bottom of the outer tub. In addition, it is desirable that the washing water pressurized in the pump chamber is efficiently sent to the cloth collecting net and circulates through the cloth collecting net without leakage.

However, in a conventional fully automatic washing machine,
It lacks a device to efficiently guide the cloth waste generated in the washing tub to the bottom of the outer tub, and also circulates the washing water at the bottom of the washing tub where the cloth waste settles efficiently to the cloth collecting net. Lack of ingenuity.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a waste collecting means for efficiently collecting the waste generated in a washing tub.

[0007]

SUMMARY OF THE INVENTION The present invention relates to an outer tub, a washing tub having a dehydrating hole disposed in the outer tub and also serving as a dehydrating tub, and a rotating blade provided at the center of the bottom of the washing tub. When a driving device for rotating the rotor blade and / or the washing tub, prior to
A washing machine provided with a trash collecting means for circulating washing water at the bottom of the outer tub to a trash collecting portion by a circulating pump provided at the bottom of the washing tub to collect the trash contained in the washing water. In the above, the circulation pump includes an impeller having blades on both sides.
The upper blade of the impeller washes the lower portion of the rotor.
The rinsing water is sucked and circulated through the cloth collecting portion, and the lower blade
The root sucks the washing water at the bottom of the outer tub and collects the cloth dust.
It is characterized by being circulated to , specifically,
The circulating pump includes a bottom wall recess formed in the bottom wall of the washing tub and a pump chamber partitioned by casing fitted into the bottom wall recess, and the impeller drives the rotating blade to rotate. It is driven by the shaft so as to rotate the pump chamber
The casing is provided with a suction port for penetrating the drive shaft and sucking washing water at a lower portion of the rotary wing, wherein the impeller has a disc-like shape. It is characterized by providing protruding wings on both sides of the base,
Alternatively, the circulating pump includes a bottom wall recess formed in a bottom wall of the washing tub, a pump chamber defined by casing fitted into the bottom wall recess, and a first rotating blade for rotating the rotor.
An impeller that is driven by the drive shaft and rotates in the pump chamber; and a suction formed in the casing so as to penetrate the first drive shaft and suck washing water at a lower portion of the rotor. A mouth, and a suction port formed to suck in washing water at the bottom of the outer tub at the connection portion of the bottom wall concave portion to which the second drive shaft for rotating the washing tub is connected. .

[0008]

[Function] Most of the cloth waste is generated by the mechanical action of the rotating blades on the laundry, and while moving on the water flow formed by the rotating blades, a part of the cloth is settled at the bottom of the washing tub. ,
A part is discharged out of the washing tub through the spin-drying hole of the washing tub and reaches the bottom of the outer tub. The cloth collecting means circulates the washing water at the bottom of the outer tub to the cloth collecting section by a circulation pump to collect the cloth contained in the washing water. Since the washing water is also sucked 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.

FIGS. 1 and 2 show an embodiment of a fully automatic washing machine according to the present invention. FIG. 1 is a longitudinal sectional side view, and FIG. 2 is a cross-sectional plan view of a main part showing a washing water circulation channel.

In FIG. 1, the exterior is composed of an outer frame 1 and a lid 2 which is opened and closed at its upper edge so as to be freely opened and closed. The outer tank 3, which is a water receiving tank, is provided with a tank cover 3a at an upper edge thereof, and is supported in a suspended state in the outer frame 1 from the upper four corners of the outer frame 1 by the hanging rods 4b via the buffer members 4a. And washing water in the washing step and rinsing water in the rinsing step (hereinafter referred to as washing water).

A drive motor 6 mounted on a drive base 5 provided outside the bottom wall of the outer tub 3 is connected by a belt 8 to a transmission 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 water-tight manner and projects into the outer tub 3. In the washing process and the rinsing process, the transmission 7 rotates the inner output shaft 7a forward and reverse at a low speed of 100 to 150 rpm while the outer output shaft 7b is kept stationary.
In the dehydration step, the inner and outer output shafts 7a and 7b are rotated at a high speed of 700 to 1000 rpm in a state of being put together.

The washing tub 9 is mainly composed of a bottom wall 9a and a body 9b, and a bottom wall recess 9c for forming a circulating pump 12 for collecting cloth waste is provided at the center of the bottom wall 9a. The balancer 9d is mounted on the upper edge of the body 9b. A hub 11 connected 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 screws, rivets, or the like. The washing tub 9 has suction ports 9f and 11a formed to penetrate the bottom wall recess 9c and the hub 11, and dehydration and cloth dust uniformly distributed on the entire peripheral surface of the body 9b. Discharge hole 9e is provided.

A casing 14 is provided on the bottom wall recess 9c so as to cover the bottom wall recess 9c and define a pump chamber forming space below the rotor blade 10 connected to the shaft end of the inner output shaft 7a. It is inserted. This casing 14 is used for separating wall 1
4a and a suction port 14b which penetrates the inner output shaft 7a and sucks washing water from a space below the rotor 10.
And a cylindrical portion 14c that fits into the bottom wall recess 9c, and a discharge port 14d that discharges pressurized washing water. The bottom wall 9c is fitted in the bottom wall recess 9c of the washing tub 6 in a prone manner. Recess 9
Form a pump chamber in c. The impeller 13 is a disc-shaped base 1
3a, the blades 13b and 13c are protrudingly provided on both surfaces thereof. The blades 13b and 13c are fixed in the middle of the inner output shaft 7a, rotate in the pump chamber, and pressurize the washing water sucked from the suction ports 9f, 11a and 15b. From the outlet 14d to the headrace 15
Send to a.

The partition 14 is raised from the outlet 14d of the casing 14 along the inner wall surface of the washing tub 9 to the upper edge of the body 9b so as to be brought into close contact therewith. A water channel 15a is formed, and a bag-like cloth dust collecting filter 1 made of fine mesh cloth is formed at an outlet 15b formed at the upper end thereof.
6 is installed detachably.

A drain port 3b formed in the bottom wall of the outer tub 3
Is connected to a drain hose 18 via a drain solenoid valve 17 to form a drain system, and the on-off operation of a clutch mechanism in the transmission 7 for switching the mode of power transmission to the internal and external output shafts 7a and 7b is as follows. The operation is performed by the solenoid coil 19. Since the water supply system is the same as that of the conventional fully automatic washing machine, the illustration is omitted, and the control for controlling the operation 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 is performed. Since the same applies to the device, the illustration is omitted.

In the above configuration, in the washing step or the rinsing step, the washing water at a predetermined level is held in the outer tub 3 and the rotating wing 10 is moved 100 to 1 while the washing tub 9 is kept stationary.
It is driven by the drive motor 6 so as to repeat the normal rotation and the 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 7 reduces the rotation of the drive motor 6 and transmits it only to the inner output shaft 7a to rotate the rotary blade 10 at low speed. Works like that.

In the washing step or the rinsing step, the laundry is agitated by the rotation of the rotary blade 10 and washed or rinsed while being rubbed. Then, the cloth waste generated in the washing step or the rinsing step is mixed with the washing water and moves together with the washing water.

In the washing tub 9, the washing water is supplied to the rotor 1
With the rotation of 0, the rotor 10 is urged to move radially outward in the lower region of the washing tub 9 where the rotor blades 10 are located, and collides with the lower region of the body portion 9b to follow the inner surface of the body portion 9b. Turn to rise.

When the inner output shaft 7a rotates to rotate the rotary blade 10, the impeller 13 of the circulating pump 12 rotates, and the pumping action of the blades 13a and 13b pressurizes the washing water in the pump chamber to discharge water. The water is discharged from the outlet 14d to the water conduit 15a, rises up the water conduit 15a, flows out of the outlet 15b to the cloth dust collecting filter 16, where the cloth is collected and returned to the washing tub 9. Then, 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 waste, and the dewatering / cloth waste discharge hole 9e is provided at the bottom.
The washing water including the cloth waste in the washing tub 9 flows through the washing tub 9.

In a general washing machine, a relatively large gap is formed between the outer peripheral edge of the rotary blade 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 washing water is spouted by the pumping action due to the rotation of the bottom surface of the rotary wing 10 to diffuse the cloth waste settled on the bottom wall of the washing tub 9. However, in this embodiment, the circulating pump 12 acts to suck the washing water also from the suction port 14b, so that the washing water located at the bottom of the washing tub 9 is provided in the gap on the lower side of the rotary blade 10. As a result, the cloth waste settled at the bottom of the washing tub 9 can be prevented from diffusing, and can be sucked into the pump chamber and sent out to the water conduit 15a.

In such a washing water circulation, the disk-shaped base 13a of the impeller 13 of the circulation pump 12 causes the blade 13b to suck the washing water from the suction port 14b, and
c serves to suck the washing water from the suction ports 9f and 11a, thereby preventing the washing water circulation flow from being biased.

In the dehydration step after the washing step and the rinsing step,
By opening the drainage electromagnetic valve 17 to drain the washing water in the outer tub 3, the washing water in the washing tub 9 also has holes 9 e, 14 b, 9.
The water is drained out of the tank through f and 11a. The transmission 7 is switched by the solenoid coil 19 to transmit the rotation of the drive motor 6 to the inner and outer output shafts 7a and 7b at a high speed, thereby rotating the washing tub 9 and the rotary blade 10 integrally at a high speed. Thus, the washing water contained in the laundry is centrifugally dehydrated.

[0024]

Most of the cloth waste is generated by the mechanical action of the rotating blades on the laundry, and the cloth is drained and discharged from the washing tub while moving on the water flow formed by the rotating blades. And is discharged out of the washing tub and reaches the bottom of the outer tub or settles at the bottom of the washing tub. Circulation pump in the cloth dust collecting means, since the trapping by circulating the fabric scrap collecting portion sucks the wash water from the gap and the outer tub bottom between the rotating blades washing tub, a cloth moving aboard the water flow Dust and sediment at the bottom of the washing tub
The effect is obtained that the collected cloth waste can be efficiently collected.

[Brief description of the drawings]

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

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

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 3 ... Outer tub, 6 ... Driving motor, 7 ... Transmission device, 9 ... Washing tub, 9b ... Body part, 9c ... Bottom wall recessed part, 9e ... Dewatering / cloth discharge hole, 9f, 11a ... Suction port, 10 ... Rotation Wings, 12 ...
Circulation pump, 13 ... impeller, 14 ... casing, 14b
... suction port, 15a ... water channel, 16 ... cloth dust collecting filter.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shiro Obayashi 502, Kandate-cho, Tsuchiura-shi, Ibaraki Pref. Machinery Research Laboratory, Hitachi, Ltd. (72) Inventor Mitsuyuki Togashi 502, Kandate-cho, Tsuchiura-shi, Ibaraki Hitachi, Ltd. Inside the research institute (72) Inventor Soichi Fukuzawa 502 Kandachi-cho, Tsuchiura-shi, Ibaraki Pref. Machinery Research Laboratory, Hitachi, Ltd. (56) References: Shokai 55-45994 (JP, U) Shokai 57-90071 (JP, U.S.A.) U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) D06F 39/08-39/10

Claims (5)

(57) [Claims] 1. An outer tub, a washing tub having a dehydrating hole disposed in the outer tub and also serving as a dehydrating tub, a rotary wing provided at the bottom center of the washing tub, and a rotary wing and / or A driving device for rotating the washing tub, and a circulation device provided at the bottom of the washing tub.
In a washing machine provided with cloth dust collecting means for circulating washing water at the bottom of the outer tub to a cloth collecting section by a pump to collect the cloth contained in the washing water, the circulating pump is provided on both sides. Equipped with an impeller with blades,
The upper blade of this impeller is the washing water on the lower side of the rotor.
Is sucked and circulated through the cloth collecting portion, and the lower blade is
The washing water at the bottom of the outer tub is sucked and circulated to the cloth collecting portion.
A dehydration washing machine characterized in that it is made to loop . 2. A method according to claim 1, wherein the circulation pump, Quai fitted into the bottom wall recess and the bottom wall recess formed in the bottom wall of the washing tub - a pump chamber partitioned by sequencing, before
Serial impeller dewatering washing machine is characterized in that so as to rotate in the pump chamber is driven by a drive shaft for rotating the rotary blade. 3. The spin-drying washing machine according to claim 2, wherein the casing includes a suction port that penetrates the drive shaft and sucks washing water at a lower portion of the rotary wing. 4. The spin-drying washing machine according to claim 2, wherein the impeller has blades protruding from both sides of a disk-shaped substrate. 5. The circulating pump according to claim 1, wherein the circulating pump includes a bottom wall recess formed in a bottom wall of the washing tub, a pump chamber defined by a casing fitted into the bottom wall recess, and the rotary pump. An impeller that is driven by a first drive shaft for rotating the blades and rotates in the pump chamber; and the case that penetrates the first drive shaft and sucks washing water at a lower portion of the rotary blade. A suction port formed in the shingle; and a suction port formed to suck the washing water from the bottom of the outer tub into the connection portion of the bottom wall concave portion to which the second drive shaft for rotating the washing tub is connected. A dehydration washing machine characterized by the following.