JP3100004B2 - Dehydrator dehydration tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dewatering tank for a dehydrator.

[0002]

2. Description of the Related Art A ratio ρ of a width W to a height H of a fluid storage portion of a fluid balancer provided above a dehydration tub of a conventional dehydrator is equal to ρ =.
W / H is large at about 0.4 to 0.7, and the step between the inner diameter of the dewatering tank and the inner diameter of the fluid balancer is 10 mm or more. There is no problem when the load is large enough to reach the top of the fluid balancer, but when the load is small and the load is only below the fluid balancer, the play between the outer diameter of the dewatering cover and the inner diameter of the dewatering tank may be reduced. The dehydration cover is so large that it easily pops out during the dehydration operation.Therefore, the dehydration cover used to prevent the cloth from jumping out must be set at the lower end of the fluid balancer. It was dead space without being effectively used as a product.

[0003]

In the above prior art, no consideration is given to the fact that the height of the fluid balancer provided above the dewatering tank is effectively used as the inner volume of the dewatering tank, and the dead space is reduced. There was a problem that did not contribute to the resulting resource saving.

[0004] It is an object of the present invention to effectively utilize the height of the fluid balancer as the internal volume of the dewatering tank.

[0005]

In order to achieve the above-mentioned object, a plurality of ribs are provided on the inner periphery of the dewatering tank, and the inner diameter of the rising inner wall of the fluid balancer and the inner diameter of the rib on the inner circumference of the dewatering tank are determined. By reducing the step to 7 mm or less, the dewatering cover will not rattle under a small load, so that it does not come off during the dehydration operation, while taking safety into consideration and effectively increasing the inner volume of the dehydration tank. It was done.

[0006]

[Function] A fluid balancer made of polypropylene resin is fixed to the upper end of a composite polypropylene dehydration tank mixed with a reinforcing material such as calcium carbonate by spin welding or screwing, etc., to unbalance the clothes put in the dehydration tank. With a fluid balancer that compensates, quickly balance when starting dehydration, synchronous rotation etc.
The occurrence of abnormal vibration is prevented by maintaining the balance.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a longitudinal sectional view of a two-tub washing machine.
The base 1 is provided with a washing motor 2 and a dehydration motor 3, and the rotation of the washing motor 2 is transmitted to a pulsator 11 via a motor pulley 8, a belt 9, and a pulsator pulley 10 to wash the laundry in the washing tub 7. ， Rinse. The rinsing filter 14 is attached to the tub wall at the inner corner, and functions as a filter that separates the washing tub 7 from the piping so that lint, foreign matter, and the like do not enter the piping. The dewatering tub 6 is connected to the dehydration motor 3 via the coupling 5.
And dewatering by centrifugal force.

On the other hand, an operation panel 12 is arranged above the washing tub 7 provided in the outer frame 4, and operations such as control of washing time, dehydration time, and switching of water flow can be switched by the operation knob 13. ing.

FIG. 2 is a longitudinal sectional view of a dewatering tub used for dehydrating a laundry to be washed, which constitutes one part, in the two-tub washing machine shown in FIG. The dewatering tank 6 is made of a synthetic resin (polypropylene with a filler) dewatering tank body 6 and a synthetic resin.
(Filler-filled polypropylene) fluid balancer 20.

At the bottom of the dehydration tub main body 6, a dehydration tub bracket 19 is mounted around a dehydration tub shaft 21, and is press-fitted and fixed to the upper end of the dehydration tub shaft 21. The dewatering tank main body 6, which is a bottomed cylinder, is composed of a substantially vertical wall portion and a concave curved bottom portion, and a water guide groove 22 serving as a vertical dehydration passage having the same shape is formed on the inner wall of the vertical wall portion. The plurality of ribs 41 are provided at regular intervals of 60 ° on the inner periphery of the protruding rib 35 as shown in FIG.

In the upper part of the dewatering tank main body 6, there is provided an upper drainage hole 23 for guiding water from the dewatering object rising from the water guide groove 22 or the like to the outside.

A bottom drainage hole 24 is provided at the bottom of the dewatering tank main body 6.

Next, the configuration of the fluid balancer 20 will be described with reference to FIG. The fluid balancer 20 includes an upper balance ring 25 and a lower balance ring 26, and has a saline solution 40 sealed therein.

The upper balance ring 25 on the inner periphery of the upper end of the fluid balancer 20 has a folded portion A27, and the lower balance ring 26 has a folded portion B which covers burrs during spin welding.
28 are provided, and the turned-back portion A27 and the turned-back portion B28 serve as receiving portions for the dewatering cover 30, and stop portions of the dewatering cover 30 so that the dewatering cover 30 does not easily pop out during the dewatering operation. .

The lower balance ring 25 and the upper balance ring 26 have heights h of the joints 31 and 32,
The openings of the upper balance ring 25 and the lower balance ring 26 are brought into contact with each other, rotated and slid while pressing each other, joined by frictional heat, and a ring-shaped balancer case is formed by so-called spin welding.

The balancer case formed integrally with the upper and lower balance rings 25 and 26 as described above is inserted into the upper part of the dehydration tub main body 6 as shown in FIG. 2, and the fluid balancer 20 and the dehydration tub main body 6 are spun. Welding is performed by welding to form a dewatering tank 6.

At this time, a ring-shaped space 33 shown in FIG. 3 is formed between the dewatering tank main body 6 and the fluid balancer 20. A part of the ring-shaped space 33 communicates with the upper drain hole 23 of the dehydration tub main body 6 described above.

Next, regarding the set of the dehydrating cover 30,
This will be described with reference to FIG. Dewatering the cover 30 is a low density polyethylene or soft material made of disc-shaped like vinyl acetate, a Kakarigodai L against the inner diameter φd of the upper balance ring 25 at the outer diameter of [phi] D _1, lower and is configured with a clearance Δ of the upper internal diameter [phi] D ₂ and 0~3mm of commissioning the inner wall 34 of the compensation rings 26.

Meanwhile, the lower internal diameter [phi] D ₃ of startup inner wall 34 of the lower balance ring 26, and large draft l ₁ minute 1 / 30-1 / 200 from the upper inner diameter [phi] D _2, between the water conducting grooves 22 of the dewatering tank 6 has a structure having a step l ₂ and the inner diameter [phi] D ₄ ribs 41 provided on the inner side of the projecting rib 35 formed on, the step l ₂ is set to about 0 to 4 mm.

As shown in FIG. 4, six ribs 41 on the inner periphery of the dewatering tub are provided at regular intervals of 60 ° and have a height of 1 to 10 mm. The number of the ribs 41 is suitably 3 to 18 so as not to hinder the increase in the inner volume of the dewatering tub 6.
The space occupied by the ribs 41 occupying the inside becomes large, which is the same as that when the cloth is thrown in and the inside diameter of the dewatering tub 6 is reduced, and the internal volume is reduced by the height of the ribs.

The difference l ₃ between the outer diameter φD ₁ of the dewatering cover 30 and the inner diameter φD ₄ of the rib 41 on the inner periphery of the dewatering tank 6 is the sum of the gradient l ₁ of the rising inner wall 34, the step l ₂ and the clearance Δ. It is set to 7 mm or less.

As described above, by forming the rising inner wall 34 of the lower balance ring 26 with respect to the rib 41 and the dewatering cover 30, the state of the rated load which is large until the load amount becomes the portion of the rising inner wall 34 of the fluid balancer 20. Of course, the outer diameter φD of the dehydrating cover 30 can be reduced even when the load is a small load only in the lower part of the fluid basin 20.
Since the difference between the inner diameter φ1 and the inner diameter φD4 of the rib 41 provided on the inner periphery of the dewatering tank 6 is small and there is no play, there is no problem that the dewatering cover pops out during the dewatering operation. Elaborate further
You. The load in the dehydration tank 6 is small, and the dehydration cover 30
Even if it falls to the middle of the dehydration tank 6, the dehydration cover
-30 is located at the fluid balancer 20
As with, it remains flat without tilting.
That is, the inner peripheral portion of the protruding rib 35 is provided inside the dehydration tank 6.
And a rib 41 projecting therefrom, and connecting an inner peripheral edge of the rib 41.
The diameter of the inner circumference circle defines the inner circumference of the fluid
The diameter is reduced so as to approach the inner diameter of the rising inner wall 34
Therefore, the dehydration cover 30 is placed at the location of the fluid bath
As in the case of the position, the inner circumference of the dewatering tank 6 and the dewatering cover 3
0 and there is almost no play gap.
Cannot move easily in the circumferential direction in the middle of the dewatering tank 6
No. Since it cannot move easily in the circumferential direction,
-30 gets up while moving around in the dehydration tank 6
Like jumping out of the fluid basin
Nothing happens.

Therefore, according to the embodiment of the present invention, even if the rising inner wall of the fluid balancer becomes smaller than the inner wall of the dewatering tub, the inside of the dewatering tub is prevented from popping out of the dewatering tub during the dewatering operation. By providing ribs with the number and height within the range that does not disturb the space occupied by the cloth, the inner volume of the dewatering tub can be effectively increased, and unsafe problems such as popping out of the dewatering cover are eliminated. This makes it possible to provide a dewatering tub that can be compactly increased in capacity and contributes to resource saving and space saving.

[0025]

According to the present invention, as described above,
Even if the inner diameter of the rising inner wall of the fluid balancer in the dewatering tank becomes smaller than the inner diameter of the dewatering tank, the inner volume of the dewatering tank can be effectively increased by providing ribs without obstructing the space occupied by the cloth on the inner circumference of the dewatering tank. In addition, it is possible to provide a safe dehydration tub so that the dehydration cover does not jump out of the dehydration tub during the dehydration operation.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a two-tub washing machine provided with a dewatering tub of the present invention.

FIG. 2 is a longitudinal sectional view of the dewatering tub of FIG.

FIG. 3 is a vertical cross-sectional view showing a fluid balancer attached to an upper part of a dehydration tank and a state in which a dehydration cover is set on the upper part of the fluid balancer.

FIG. 4 is a plan view of a dewatering tank showing an inner circumferential rib of the present invention.

[Explanation of symbols]

6: dehydration tank, 20: fluid balancer, 30: dehydration cover, 34: rising inner wall, 41: rib.

Continuation of the front page (72) Inventor Takeshi Fukuchi 4-6 Kanda Surugadai, Chiyoda-ku, Tokyo Hitachi, Ltd. , U) Japanese Utility Model Application 54-154576 (JP, U) Japanese Utility Model Application Hei 2-51890 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 49/02 D06F 39/12

Claims (3)

(57) [Claims] A dewatering tank into which a dewatering cover is inserted;
A bottomed dehydration tank body that forms a water tank, and the dehydration tank
Dehydrator with fluid basinser on top of body
In the water tank, the inner wall of the vertical wall forming the dewatering tank body has upper and lower
Protruding ribs extending in the direction of
Are provided at equal intervals, and on the inner peripheral portion of the protruding rib,
Intervals so that every one of the ribs
And the diameter of the inner circumferential circle connecting the inner circumferential edges of the ribs is
Diameter so that it approaches the inner diameter of the rising inner wall that forms the inner circumference of the
Characterized in that the difference between the two diameters is reduced to 7 mm or less.
Dehydration tank of water machine. 2. The method according to claim 1, wherein the number of the ribs is three to three.
A dehydrator for a dehydrator, comprising 18 tubes. 3. The method according to claim 1, wherein the height of the rib is 1 to 3.
A dehydration tank for a dehydrator, characterized in that it has a diameter of 10 mm.