JPH02151Y2 - - Google Patents

Description

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

(b) Prior art In this type of washing machine, it is difficult to sufficiently inject water to the bottom of the dehydration tank. For example, there is a device that releases water from a group of small holes on the side surface of the cylinder in the center of the dehydration tank, and absorbs water from the top to the bottom of the laundry. In this case, water can be absorbed relatively evenly in the top and bottom, but since the cylinder protrudes from the center of the tank, it is difficult to put in and take out laundry, and the capacity inside the tank appears smaller than it actually is. precision is required.

In addition, there are also devices in which vertical grooves are integrally formed on the inner surface of the dewatering tank, or a large-diameter corrugated cylinder is inserted into the tank in order to leave the vertical grooves. In this case, the disadvantages of the former method of installing a water filler tube upright have been overcome, but the vertical grooves do not reach the bottom of the tank, and there is no guarantee that laundry will not get into the vertical grooves. Therefore, the required amount of rinsing water could not be supplied to the lower part, resulting in uneven rinsing in the upper and lower parts.
Furthermore, if the laundry in the lower part of the tub was in close contact with the lower outlet of the vertical groove, the rinsing water reaching the lower part would be locally absorbed, causing unevenness.

(c) Purpose of the invention The purpose of the invention is to make it possible to thoroughly pour water to the bottom of the dehydration tank so that rinsing can be performed evenly from top to bottom.

(d) Structure of the invention The present invention has a dehydration tank that is either non-porous or has a dehydration hole in the upper part, and a large-diameter water injection tube is disposed inside the dehydration tank, and a cap is especially provided in the lower part of the inside. A water injection channel is formed between the outer surface of each of the water injection tube and the cap and the inner surface of the dehydration tank, and a water passage hole and a water injection hole are formed on the circumferential side of the water injection tube and the cap. It is installed between a plurality of wing pieces that extend from the central bulge of the cap to the periphery. Therefore,
The water injection hole is located in a recess surrounded by the wing pieces, so it will not be blocked by laundry.
Further, in the lower part of the tub, the rotation of the blades makes it possible to slightly float the laundry, and the water collected in the lower part can create a weak water flow. Therefore, the injected rinsing water is efficiently and uniformly absorbed into the laundry in the lower part of the tub, and as a result, rinsing can be performed with less unevenness between the upper and lower parts.

(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. This process involves rinsing.

Reference numeral 9 denotes a dish-shaped safety cover that opens and closes the upper opening of the dewatering tank 4, and has a large number of small holes 10 bored in its bottom surface. Reference numeral 11 is a box-shaped indicator device placed at the top of the washing tub 3, which displays the amount of water supplied by discharging supplied water into the tub with varying widths, or by discharging water from a specific water outlet. .

Inside the control box 5, there is a washing water supply path 14 and a rinse water supply path 1 that communicate with the water supply hose attachment port 12 via a switching valve 13.
A supply channel 14 supplies water to the indicator device 11, and a supply channel 15 faces the side wall of the safety cover 9 to supply water into the cover. The amount of rinsing water supplied through the supply path 15 can be set to an appropriate amount by setting the switching valve 13 to the washing side and measuring it with the reference device 11 in advance, and then switching to the dewatering side.

Reference numeral 16 denotes a resin bowl-shaped cap placed on the inner bottom surface of the dehydration tank 6 in order to hide the connecting part with the motor rotating shaft 8. As shown in Fig. 3 A and B, the cap 16 is a resin bowl-shaped cap that gradually moves upward from the center of the top surface. At the same time, three wing pieces 18 are provided protruding from the central bulging part 17 toward the periphery, and three rows are provided on the side and bottom surface of the central bulging part 17 surrounded by the wing pieces 18. A water injection hole 19 is provided. The cap 16 has mounting pins 20, which have some elasticity, protruding downward from the bottom surface, and the engagement holes at the bottom of the mounting pins 20 are connected to the locking pieces 21 fixed to the bottom surface of the tank. It is engaged and fixed.
A lower injection channel 22 is formed between the lower surface of the cap 16 and the bottom surface of the tank. Reference numeral 23 denotes a guide rib that extends slightly outward from the outer peripheral edge of the cap 16. Further, 24... are reinforcing ribs arranged radially on the lower surface of the cap 16 and integrally formed therewith.

Reference numeral 25 denotes a cylindrical water injection tube disposed coaxially within the dehydration tank 6, with two identical plates 26, 26 made of relatively flexible resin integrally molded at both ends thereof. They are formed by engaging with each other.
As shown in FIG. 4 A and B, each plate body 26 has concave grooves 27...
is formed vertically and tilted to the left, and this groove 2
7...Circular and horizontally elongated water holes 28... are formed in a vertical line along the groove between the water holes 2.
8... are made to become denser in order toward the bottom. The horizontally elongated water holes 28 are slightly recessed toward the outside, and the upper and lower sides are integrally connected by a crosspiece. 29... are engagement holes formed at intervals on the right end of the plate body 26, and 30... are each engagement hole 29...
A protrusion slightly protruding to the left on the right end of 31
32... are claws formed on both sides of the engaging hole corresponding portions of the hook 31; 33... are claws that penetrate the right ends of the claws 32... This is a die-cut hole. 34 is plate 2
A positioning boss protruding from the center of the left and right sides of the outer surface of the dehydration tank 6 is fitted into a positioning hole 35 bored in the circumferential side of the dehydration tank 6. Note that the boss 34 and its hole 35 may have an appropriate shape such as a hexagonal shape other than a circular shape. Numerous spacing ribs 36 are formed to protrude vertically on the outer surface of the plate 26, and secure an upper injection channel 37 between the inner peripheral surface of the dehydration tank 6 and the outer surface of the water injection tube 25 (plate 26). Also, the water injection tube 25 (plate body 26) is reinforced.

As shown in FIG.
...Push inside. Since the claws 32 can be engaged with the hole edges of the engagement holes 29 and the protrusions 30, even if the plates 26 and 26 are warped, they will not come off easily, and even if you try to take them off by warping only one side, they will be engaged on both sides. Claw 32... will not come off. Since the projections 30 fit into the die-cut holes 33, the die-cut holes 33 can be filled and hidden. After joining into a single plate in this way,
The whole is rolled into a cylindrical shape, and the other hook and claw are pushed into one of the engagement holes and engaged in the same manner as described above. The water injection tube 25 is thus made and placed in the dewatering tank 6, and the lower end opening of the tube 25 is elastically pressed against the outer end of the guide rib 23 of the cap 16 by mutual elasticity.

The installation procedure involves first slightly deforming the water filler tube 25, placing it in the dehydration tank 6, and then attaching it to the positioning boss 34.
into the positioning hole 35. Next, the cap 16 is placed into the water injection tube 24 and lowered while sliding the guide rib 23 on the inner surface of the tube, and the mounting pin 20 is lowered.
The engagement holes of... are engaged with the locking pieces 21 to secure them.
At this time, as described above, the guide rib 23
Pressed into the lower end opening of the upper and lower injection channels 37, 22
are communicating.

Reference numeral 38 denotes a flexible dehydration tank lid which is suitably applied to the upper opening of the dehydration tank 3, 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, the switching valve 13 is set to the dewatering side, so that rinsing water is continuously introduced into the safety cover 9 from the supply path 15, and falls from there into the dehydrating tank 6 through the small holes 10, etc. do. The rinsing water in the dehydration tank 6 is directly absorbed by the laundry in the upper part of the tank, and also sequentially enters the middle part where it is absorbed. On the other hand, the water flows down through the upper and lower water injection channels 37 and 22 to the middle and lower laundry items.
8 Water is absorbed from... Since the water inlet holes 19 are covered by the wing pieces 18 so that they are not easily blocked by laundry, rinsing water can be smoothly supplied. That is, the dehydration hole 7 of the dehydration tank 6
...is present only in the upper part, so the rinsing water that goes to the lower part is well absorbed by the laundry in the middle and lower parts. Further, the rinsing water flows down the grooves 27 and is absorbed.

When centrifugal force is applied, the water absorbed by the laundry is discharged through the water holes 28, dewatering holes 7, and by repeating water absorption and dewatering several times, the water is absorbed into the laundry. The detergent solution is diluted and so-called rinsing is performed.

Also, since the blades 18 of the cap 16 rotate together with the tub, the blades 18 that rotate the laundry at the bottom of the tub
8 can be made to float a little, making it easier for water supplied from the water injection holes 19 to enter the tank, and the laundry at the bottom absorbs water well. Furthermore, wing piece 1
8... stirs the rinse water supplied to the lower part of the tank during low speed rotation to form a weak water flow. Therefore,
This water flow promotes water absorption into the laundry.

(f) Effects of the invention The present invention uses a cap to significantly improve the water absorption effect in the lower part of the tank, and can perform rinsing with less uneven water injection in the upper and lower parts, thereby providing a high-performance washing machine.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway and partially transparent front view of the washing machine according to the present invention, Fig. 2 is a sectional view of the dewatering tank, etc., Fig. 3 A and B are a perspective view and a plan view of the cap, and Fig. 3 is a perspective view of the cap. Figures 4A and 4B are a front view and a bottom view of the plate forming the water injection tube, and Figure 5 is a sectional view of the main parts showing the connection of the plates.
FIG. 6 is a cross-sectional view of the dehydration tank. 6... Dehydration tank, 16... Cap, 17... Central bulge, 18... Wing piece, 19... Water injection hole, 25
... Water injection tube, 28 ... Water passage hole, 22, 37 ... Water injection channel.

Claims (1)

[Scope of utility model registration request] A centrifugal dehydration tank with or without a dehydration hole at the top, a large diameter water injection tube coaxially placed inside the dehydration tank, a cap placed at the bottom of the inside of the dehydration tank, and a dehydration tank. and a water supply means for supplying rinsing water from the upper part, the lower part of the water injection tube and the outer circumference of the cap are adjacent to or connected to each other, and the water injection tube and the outer surface of the cap, respectively, and the inner surface of the dehydration tank are provided with a water supply means. forms an injection channel, and a large number of water passage holes are formed vertically on the circumferential side of the water injection tube, and the cap has a central bulge and a plurality of blades facing the periphery from the central bulge, and holes between the blades. 1. A washing machine characterized by forming a water injection hole located in the water injection channel and communicating with the inside of the injection channel.