JPS6319039Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a washing machine that performs rinsing by water injection and dehydration in a dehydration tank.

(b) Prior Art When injecting water into a dehydration tank, if water is directly injected using tap water pressure, the water will splash excessively, making it impossible to inject water effectively. Also, since the rinse water supply path is inside the control box,
In most cases, the dehydration tank is bent due to its relationship with the surrounding components, and if the supplied water comes out unevenly due to the bend, water will be poured into a specific position in the dehydration tank, which will deteriorate the rinsing performance. Therefore, in the past, a water receiving device was installed on the cover that opens and closes the clothes input port on the top plate of the dehydration tank, and unevenness and projections were provided inside the water receiving device to temporarily store the introduced water. The pressure and unevenness were reduced, and the water was discharged from there to a designated injection point.

However, when such a water receiving device is provided on the cover, the thickness increases, and it cannot be used when the cover arrangement size above the dehydration tank is limited to a small size.

(c) Purpose of the invention The present invention aims to improve the degree of dimensional freedom while maintaining water injection performance by devising the shape of the cover so that it can also be used as a water receiving device.

(d) Structure of the invention In this invention, a water injection hole is formed in the bottom of the safety cover which is recessed into a dish shape, and an inlet is formed in the side wall of the inlet, and a curved supply path is exposed to this inlet. This washing machine has dispersion protrusions protruding from the bottom surface of the washing machine for distributing the introduced water to the left and right, and the dispersion protrusions are arranged so as to be offset by the amount that the introduced water is biased in the curved path. Therefore, the rinsing water that is about to be introduced onto the bottom of the cover while being biased collides with the top dispersion protrusion and is dispersed to the left and right, and is evenly spread over the cover and is slightly rectified and flows from the water injection hole on the bottom to the dehydration tank. Fall to the top. That is, on the bottom surface of the cover, almost the same function as the conventional water receiving device is achieved without using that device.

(E) Embodiment To explain based on the drawings, 1 is a two-tub washing machine in which a washing tub 3 and a dewatering tank 4 are arranged side by side in a machine frame 2, and a control box 5 is arranged at the upper rear part. A large-diameter chevron-shaped pulsator (not shown) is disposed at the inner bottom of the washing tub 3, and is rotated at a low speed during washing. A dehydration tank 6 whose upper opening edge is curled inward is disposed within the dehydration receiving tank 4. This dehydration tank 6 has a dehydration hole 7 bored in the upper part of the circumferential side, and is connected to a motor rotating shaft 8 for "dehydration" by continuous clockwise rotation, and "dehydration" by intermittent clockwise rotation with pauses while pouring water. ``Rinsing'' is performed.

Reference numeral 9 denotes a top plate fixed to the upper opening of the dehydration receiving tank 4, forming a clothes input port 10.

Reference numeral 11 designates a dish-shaped safety cover for opening and closing the clothes input port 10, and its rear portion is pivotally supported within the control box 5. The safety cover 11 is a transparent resin molded product integrally molded using a mold with upper and lower parts cut out, and the peripheral side wall is inclined so as to expand slightly outward. Then, cut out the inlet 12 facing the curved wall at the back left corner of the circumferential wall to a height (cutting amount l)
It is formed in a horizontally elongated manner by utilizing the water, and an overflow hole 13 is formed at the rear of the peripheral side wall. Further, a large number of water injection holes 14 are formed in the entire bottom surface, and a circular stepped portion 15 is formed in the center of the bottom surface to facilitate punching out of the mold. Furthermore, this safety cover 11
A dispersion protrusion 16 is protruded at a position on the bottom surface slightly to the right of the center of the hole with respect to the hole center. The dispersion protrusion 16 has a steep slope on the side near the introduction port 12, a gentle slope on the opposite side, and gradually widens from the side near the introduction port 12 toward the center of the bottom surface to improve the overall plane. The viewing angle is approximately triangular. The height H of the top of the dispersion protrusion 16 is approximately equal to the height M of the upper edge of the introduction hole 12.
Note that the lower hole edge of the inlet 12 has a predetermined height m from the bottom surface.

Reference numeral 17 is a box-shaped indicator device placed at the top of the washing tub 3, which displays the amount of water supplied by discharging the supplied washing water into the tub with varying widths, or by discharging water from a specific water outlet. do.

Reference numeral 18 denotes a water supply hose attachment port provided in the middle of the control box 5, and by manually switching the water supply direction from side to side, the washing water supply path 19 and the rinsing water supply path 20 in the box 5 are supplied with water. . Here, the supply path 19 supplies water to the indicator device 17 . Further, the supply path 20 extends obliquely toward the right front toward the dehydration tank 6, and then bends slightly to the left before fitting into the introduction port 12. And this supply route 1
Ribs 21 for rectification are arranged in parallel on the bottom surfaces of the tubes 9 and 20 in parallel with the flow direction.

Reference numeral 22 denotes a resin bowl-shaped cap disposed on the inner bottom surface of the dehydration tank 6 to hide the connecting portion with the motor rotating shaft 8, and has water injection holes 23 bored therein. A lower injection channel 24 is formed between the lower surface of the cap 22 and the bottom surface of the tank.

Reference numeral 25 denotes a cylindrical water injection tube disposed coaxially within the water injection tank 6, in which two identical plates, which are integrally molded using relatively flexible resin, are engaged with each other at both ends of each plate. It is formed by This water injector 25 has grooves 26 vertically inclined to the left, and circular and oblong water holes 27 arranged in tandem between the grooves 26 along the grooves. In addition, the water passage holes 27 are made to become denser toward the bottom. 28 is a number of spacing ribs formed on the outer surface of the water injection tube 25 to protrude in the vertical direction;
An upper injection channel 29 is secured between the inner peripheral surface of the dewatering tank 6 and the outer surface of the water injection tube 25. The upper injection channel 29 and the lower injection channel 24 communicate with each other.

Reference numeral 30 denotes a flexible dehydration tank lid which is suitably applied to the upper opening of the dehydration tank 6, which is secured by a curled portion, and has a large number of small holes formed therein.

The washing machine 1 washes in the washing tub 3, performs rinsing if necessary, and performs water injection rinsing and dehydration in the dewatering tank 4. In particular, when we explain the operation inside the dehydration tank 4, we first start with normal “dehydration”.
The dehydration tank 6 is activated by setting the timer.
Rotate clockwise at approximately 1400 rpm to perform centrifugal dehydration.

"Water rinsing" is set using the same timer, but the dewatering display and another adjacent water rinsing display are set, and the degree (number of times) of water rinsing is also matched. Then, the dehydration tank 6 first rotates clockwise for about 50 seconds, then stops for about 40 seconds after braking and inertia for about 30 seconds.
Then, this is repeated a maximum of 5 times and a minimum of 3 times as one cycle. On the other hand, rinsing water is continuously introduced into the safety cover 11 from the supply path 20, and falls from there into the dehydration tank 6 through the water injection holes 14, etc. Here, the rinsing water passing through the supply channel 20 is rectified by the rectifying ribs 21, and when the flow rate and flow velocity are small, it flows along the supply channel 20 and is uniformly distributed from the entire area of the inlet 12 onto the bottom surface of the cover. pervade. but,
When the flow rate and flow velocity are large, the flow tends to be biased toward the right side wall of the supply path 20 beyond the rectifying ribs 21 (see the one-dot chain line in FIG. 5), and is introduced from the inlet 12 as it is. At this time, the uneven rinsing water coming out of the inlet 12 heads toward the dispersion protrusion 16 which is also arranged unevenly, collides with it, and is dispersed almost equally to the left and right.
Then, it is uniformly diffused onto the bottom surface, pools in a thin layer, and falls from the water injection holes 14. Dehydration tank 6
The rinsing water inside the tub is directly absorbed by the laundry at the top of the tub, and then sequentially enters the middle section where it is absorbed. On the other hand, water flows down through the upper and lower water injection channels 29 and 24 to the middle and lower laundry items.
7. Water is absorbed from... Also, the rinsing water is in the concave groove 26.
Water flows down and is absorbed. Dehydration hole 7 of dehydration tank 6...
is present only in the upper part and the rinsing water does not drain out, and the water holes 27 are formed more densely in the lower part.
Rinse water is well absorbed by the laundry in the middle and lower parts.

Here, when centrifugal force is applied, the water absorbed into the laundry is discharged through the water passage holes 27... and the dewatering holes 7..., and by repeating water absorption and dewatering several times in this way, the laundry becomes The detergent solution inside is diluted and so-called rinsing is performed.

In this embodiment, the diameter of the water injection holes 14 is φ2.5 at the peripheral portion and φ3 at the other portions, and the amount of water supplied to the safety cover 11 is approximately 12/min. Also,
A transparent outer lid (not shown) is provided on the top of the safety cover 11 so that the bottom of the cover and the inside of the dehydration tank 6 can be viewed.
will be established.

In this embodiment, the lower edge of the inlet 12 has a height m in order to prevent backflow to the inlet 12.

Further, in this embodiment, since the introduction port 12 is formed in the inclined peripheral side wall of the cover 11, molding can be performed using a mold with upper and lower holes. The vertical width l of this inlet 12 is set so that the amount of water that has flowed into the safety cover 11 does not overflow outside the cover.

Furthermore, in this embodiment, a circular stepped portion 15 is formed on the bottom surface of the safety cover 11 to facilitate mold release. Further, the stepped portion 15 also serves as a reinforcing rib to prevent the bottom surface from warping up even if a flat bottom surface is formed.

Also, if the washing machine is slightly tilted when installed,
The water introduced into the safety cover 11 tends to flow toward the inclined side, resulting in uneven water injection into the dehydration tank 6. However, in this embodiment, no matter which direction it is tilted, the stepped section 15 located in the center fulfills the water storage function, and the water inlet 14 is also provided here, so the rinsing water is not necessarily poured into the stepped section 15. The water is introduced first, and from there it is supplied to the center of the dehydration tank where it is most effective. In other words, even if the washing machine is installed at a slight angle, the amount of rinsing water can be ensured.

Furthermore, in this embodiment, the peripheral side wall of the safety cover 11 is inclined outward at an angle of about 60 degrees, for example. This is to prevent water flowing out from the inlet 12 with a high flow rate from overflowing by dispersing it in the circumferential direction. That is, if the circumferential wall is made vertical, for example, the water is likely to splash upwards and outwards due to the force of the collision, and to easily fly out of the cover 11.

(f) Effects of the invention In this invention, a dispersion protrusion is provided so that the water that comes out unevenly collides with the top, so that the water is almost evenly distributed to the left and right and spread uniformly over the cover. It is possible to perform water injection with less bias. Furthermore, since the water receiving device can be used as a sub-requirement, it is advantageous in terms of cost, and the degree of dimensional freedom can be improved.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway and partially transparent front view of the washing machine according to the present invention, Figure 2 is a sectional view of the dewatering tank, etc., Figure 3 is a sectional view of the safety cover, and Figure 4 is the same. FIG. 5 is a perspective view in a cutaway state and a plan view showing the water supply operation. 4...Dehydration receiving tank, 5...Control box, 6...Dehydration tank, 9...Top plate, 10...Clothing inlet, 11...Safety cover, 12...Inlet port,
14...Water injection hole, 16...Distribution projection, 20... Supply channel.

Claims (1)

[Scope of utility model registration request] In machines that have a washing tub and a dewatering tank installed in the machine frame, water is injected into the washing tub and dehydrating tank at appropriate times, and rinsing is performed by water injection and dehydration in a centrifugal dehydrating tank inside the dehydrating tank. The clothes input port of the top plate disposed at the upper opening of the dehydration tank is opened and closed by a dish-shaped safety cover, and a water injection hole is formed in the bottom face of the safety cover opposite to the upper opening of the dehydration tank. An inlet is formed in the side wall of the safety cover, and a rinsing water supply path is bent and arranged in the control box at the upper rear of the machine frame.
This supply channel was made to face the inlet, and dispersion protrusions for distributing the introduced water to the left and right were provided on the bottom surface of the safety cover, and the dispersion protrusions were arranged so as to be biased by the amount that the introduced water was biased due to bending. A washing machine characterized by: