JPS6026795Y2 - washing machine - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to a washing machine having a rotary blade at the inner bottom of the washing tub and an overflow drain at the top of the washing tub.

Structure of the conventional example and its problems The conventional washing machine has a caster 1 as shown in Figs. 1 and 2.
A washing tub 3 is mounted on a washing machine main body 2 having a washing machine body 2 at the bottom, and laundry 4 and detergent or water 5 are placed in the washing tub 3 for washing and rinsing.

A rotary blade 6 is provided at the inner bottom of the washing tub 3, and the rotary blade 6 is connected via a bearing 7 to a driven pulley 8 located outside the bottom of the washing tub.

One end of a V-belt 9 is wrapped around the driven pulley 8, and
The other end of the belt 9 is wrapped around a drive pulley 10.

The drive pulley 10 is fixed to the rotating shaft of the motor 11,
Rotation of the motor 11 is transmitted to the rotary blade 6 via the V-belt 9.

The motor 11 is fixed to the bottom of the main body with a mounting bracket 12, an anti-vibration comb 13, and a motor bracket 14.

Washing is performed by filling the washing tub 3 with water up to the specified water level and then adding detergent, but in the overflow rinsing process, water is supplied from the top or bottom (the water supply structure is not shown).

To explain the overflow structure here, when the washing tub 3 is viewed from above, a part of the upper opening protrudes outward at approximately a part of the corner to form a recess 15, and the bottom surface of the recess 15 is A drain port 16 connected to the outside of the machine is provided, and this drain port 16 communicates with a connecting hose 17 to the outside.

Further, the recess 15 and the inside 18 of the washing tub 3 are connected to a partition wall 2 made of an overflow filter having a large number of small holes 19.
0, and water that has risen above the drain port 16 overflows and is drained to the outside.

In FIG. 1, reference numeral 21 is a panel section containing switches 22 and 23.

In the washing machine configured as described above, when the capacity of the laundry 4 is determined (in a two-tub type washing machine, 9 is the most common between 2.0 and 9), the amount of water 5 is determined approximately from the relationship between washing the laundry and fabric damage.

On the other hand, the planar size of the entire washing machine is determined by the need to make it compact from the point of view of economy.

Furthermore, the height to the top of the laundry is determined from the viewpoint of ease of use.Furthermore, the distance between the bottom of the washing tub 3 and the bottom of the main body 2 is determined by the storage space for the motor 11 and the like.

That is, in FIG. 1, the distance Mf from the bottom of the washing tub 3 to the top of the washing tub 3
lL, is almost determined.

Of course, there is L2 between the washing water level L1 and the rinsing water level L3 (generally, both are indicated when the rotation is stopped and not during operation).
>Li holds true.

Here, the water level rises the most when it overflows from L2.

During both washing and rinsing, when the laundry is rotated in the washing tub, the water level in the center of the tub is lower than the static water level line when viewed from above, but the water level is higher on the inner walls of the tub, causing the water to swell. It has a shape and is undulating.

During rinsing, the water level in the tank rises to the highest level, and even at this time,
It is designed to prevent water from climbing over the top of the tank and splashing outside the machine.

The overall height is regulated to prevent flying out of the aircraft, that is, L3
-If you prioritize and secure the L2 dimension, it will inevitably be “2”
Ll will no longer be secured.

In a two-tank washing machine, washing at a specified water level for 159 hours causes approximately 400 to 800 cc of water to flow out through the overflow drain 16 to the outside of the machine, causing a splattered state and ripples. .

Therefore, from the point of view of recent resource and energy conservation, the current situation is that detergent and water are wasted.

OBJECTS OF THE INVENTION The object of the present invention is to solve the above-mentioned conventional problems, to provide a washing machine which can almost eliminate the decrease in the water level in the washing tub during washing, and can save detergent and water with a simple structure.

Structure of the Invention In order to achieve the above-mentioned object distantly, the present invention has a rotary blade at the inner bottom of the washing tub, a drain for overflow at the top of the washing tub, and a drain hole near the drain when viewed from above. A protrusion protruding inward is provided on the inner wall of at least one of the left and right sides of the washing tub, and the protrusion has a side surface closer to the drain outlet that is sloped more gently than a side surface farther from the drain outlet. ,
And by making the protruding part protrude below the water level line of the washing tub, the protruding part serves as a wall to reduce the water level in the vicinity of the drain opening by preventing the formation of ridges or ripples. It is.

Description of examples Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In FIGS. 3 and 4, a recess 15 for overflow is shown.
When the washing tub 3 is viewed from above, projecting portions 24 and 25 are formed integrally or separately on the side walls of the washing tub 3 on the left side and the right side facing the drain port 16, respectively, protruding into the washing tub 3. death,
The protruding parts 24 and 25 of the brackets are the recesses 15, that is, the drain ports 1
The side 26.27 that is closer to 6 is the side 28 that is farther from the drain port 16.
．． It has a gentle slope shape compared to No. 29.

To explain the function of the protrusions 24 and 25 with reference to FIG. 4, in FIG. 3, when the rotor blade 6 rotates clockwise, the water level line 31 in the washing process is higher than the water level line 30 in still water. but,
The water level line 31 where the water level has risen on the inner wall side of the washing tub 3 is located at the protrusion 2
4 is obstructed by the sharply protruding side surface 28, and the protrusion 24
After passing through, the water level line 31 drops to 32.

If the water level line 31 remains as it is, there is a risk that water will flow out of the machine from the overflow drain port 16 during washing, but the lowering of the water level by the protrusion 24 prevents water from flowing out from the drain port 16. can.

Here, due to the presence of the side surface 27 of the protrusion 25 on the side closer to the drain port 16, it is unavoidable that the water level will rise slightly, but this is hardly a problem.

Furthermore, when the water flow is counterclockwise, the protrusion 25 provides the same effect as when the water flow is clockwise.

According to experiments, due to the presence of the protrusions 24 and 25,
A water level head of 5-6 cm was obtained.

Also, during rinsing, the water level rises slightly on the side 28.29 of the protrusion 24.25 far from the drain 16, but this is local and the rise in water level can be almost solved by the shape of the protrusion 24.25. I can do it.

Furthermore, the protrusions 24, 25 may correspond to forward and reverse water flow, and there may be only one protrusion for water flow in only one direction.
Further, of course, the protrusion 24. .

25 should not protrude below the washing water level line 30.
The aforementioned effects are very small.

As is clear from the above embodiments, the washing machine of the present invention has a protrusion protruding inwardly on the inner wall of the washing tub on at least one of the left side and the right side when viewed from above in the vicinity of the overflow drain of the washing tub. The protruding part has a side surface closer to the drain outlet that has a gentler slope shape than the side face farther from the drain outlet, and the protruding part protrudes below the washing tank water level line. As a result, the water level can be lowered by the action of the protrusion in the vicinity of the drain, using the protrusion as a barrier, eliminating the possibility that detergent and water will be wasted from the drain. Resource saving,
This can greatly contribute to energy conservation.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of the washing side of a conventional washing machine, Fig. 2 is a plan view taken along the line A-A in Fig. 1, and Fig. 3 is a Fig. 2 showing an embodiment of the present invention. The plan view of the same part, FIG. 4, is a partial vertical sectional view taken along the line BB in FIG. 3. 2...Washing machine body, 3...Washing tub, 6
...Rotary blade, 16...Drain port, 24,
25...Protrusion, 26.27.28.29...
····side.

Claims (1)

[Scope of utility model registration request] A rotary blade is provided at the inner bottom of the washing tub, an overflow drain is provided at the top of the washing tub, and a drain is provided inwardly on the inner wall of the washing tub on at least one of the left side and the right side when viewed from above in the vicinity of the drain. A protruding portion is provided, and the protruding portion has a side surface closer to the drain outlet that is sloped more gently than a side surface farther from the drain outlet, and the protruding portion extends below the washing tank water level line. A protruding washing machine.