JPS5929671Y2 - Dehydration tank - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dewatering tank that is improved so as to eliminate the catching of thread waste.

Conventionally, for example, a dehydration tank in a dehydrator, a two-tub washing machine, or a dehydrating washing machine has generally had a large number of dehydration holes relatively densely drilled in the peripheral wall at intervals of about 20 to 3 degrees (tm). It is rotated by a motor, etc., and the centrifugal force generated by the rotation shakes out moisture from the clothes to be dehydrated after washing through the dehydration holes.

However, in such a conventional dehydration tank, during the above-mentioned dehydration operation, thread waste from the material to be dehydrated is caught along with water between the dehydration holes, and this is gradually accumulated until finally There is a problem that the lint becomes so long as to block the dehydration hole, thereby significantly reducing the dehydration effect, and the accumulated lint is sometimes released all at once from the dehydration hole, causing the drain valve in the drain pipe to become clogged. On the other hand, due to the large number of dehydration holes, manufacturing of the tank body is laborious and expensive.

Therefore, it is an object of the present invention to provide a dewatering tank that does not catch lint and can be manufactured at low cost.

An embodiment in which the present invention is applied to a dehydrating and washing machine will be described below with reference to the drawings.

First, in FIG. 1, 1 is an outer box, and 2 is an outer tank that is elastically supported within the outer box 1 via a hanging mechanism 5 consisting of a hanging rod 3, a spring 4, and the like.

Reference numeral 6 denotes an inner tank rotatably disposed inside the outer tank 2, which serves as a dehydration tank that also serves as a washing tank.

Reference numeral 8 denotes a stirring blade which is rotatably disposed approximately in the middle of the inner bottom of the inner tank 6 so as to be housed in the recessed part 1, and a stirring blade for water passage is provided at the bottom of the recessed part 1 located directly below the stirring blade. A hole 9 is formed therein, and a support plate 10 fixed to the outer bottom of the recessed portion 1 is formed with a plurality of holes 11 communicating with the hole 9 described above.

Reference numeral 12 denotes a mechanism unit . . . that is attached to the substantially center of the bottom of the outer tank 2 so as to penetrate upward and downward. The washing shaft 14 is inserted vertically through the shaft, and the inner tub 6 is inserted into the upper end of the dewatering shaft 13 via the support plate 10.
The stirring blade 8 is attached to the upper end of the washing shaft 14.

Reference numeral 15 denotes a motor which is located below the outer tank 2 and is attached to the mechanism section/Using 12 in juxtaposition thereto via a mounting plate 16; A clutch mechanism (not shown) is built into the mechanism housing 12 to use the rotational power transmitted to both the washing shaft 14 for washing and dehydration. ing.

Reference numeral 18 denotes a drain hole formed at the bottom of the outer tank 2, the tip of which protrudes outside the outer box 1, and the drain port -1=F is inserted in the middle.
19, and an air trap 21 is connected to an intermediate portion of the water pipe 20 near the drain port 18. The water level switch is also connected to a water level switch (not shown).

On the other hand, the inner tank 6 has a tapered shape that gradually expands from the bottom to the top approximately parallel to the outer tank 2,
The opening on the top surface thereof is located at a higher position than the opening on the top surface of the outer tank 2.

Reference numeral 22 denotes a balance ring provided around the opening of the inner tank 6, and a required number of dewatering holes 23 are provided in a line in the upper circumferential wall of the inner tank 6, located directly below the balance ring.

The dehydration holes 23 each have a circular shape with a small diameter, and the distance L between them (see FIGS. 2 and 3)
is maintained at 50 (mm) or more, and the total surface structure is 200 Ccrr? ] or more.

Note that 24 in FIG. 1 is an abbreviation of a cross section of the upper outer periphery of the outer tank 2 that is higher than the opening on the top surface of the inner tank 6 and is isolated from the inside of the outer nuclear tank 2 between the upper circumferential wall of the outer tank 2 and the upper peripheral wall of the outer tank 2. U-shaped drainage groove part 2
26 is a cover attached to the upper edge of the water receiving wall 24, 2γ is a drain hole formed at the bottom of the drain groove portion 25, and 28 is an annular water receiving wall extending to form a water receiving wall 5. The drain port 2
This is a bypass pipe that communicates γ with the drain pipe 20.

Although not particularly shown in the drawings, the dehydrating and washing machine of this embodiment also includes a timer device that automatically advances the operation by activation and excitation of the water level switch, and a washing machine in the inner tub 6. Water supply equipment etc. are installed to supply the necessary water.

Next, the operation of this embodiment configured as described above will be described.

Now, when the timer device (not shown) is placed in the operation start area, water necessary for washing is first supplied into the inner tub 6 via a water supply device (not shown).

The water supplied to the inner tank 6 raises the water level in the inner tank 6 and at the same time passes through the holes 9 and 11 and reaches the outer tank 2.
Similarly, raise the water level inside.

When this water level eventually reaches the tripping point of the water level switch, the water level switch (not shown) operates via the air pressure inside the air trap 21, which has been increased based on the rise in the water level, thereby stopping the above-mentioned water supply operation. , instead, the timer device starts operating and the motor 15
is started, the motor 15 rotates the agitating blade 8 in forward and reverse directions via the belt transmission mechanism 1γ and the washing shaft 14, and this rotation agitates the water in the inner tub 6 to wash the laundry items (not shown).

At this time, the stirring blade 8 simultaneously causes a pumping action to suck up the water below itself, and this pumping action causes the water in the outer tank 2 to be sucked into the inner tank 6 through the holes 11 and 9. The water level in the inner tank 6 is raised to a required specified water level, and washing is performed with water substantially stored only in the inner tank 6.

During dewatering, the motor 15 rotates the inner tub 6 at high speed in one direction via the belt transmission mechanism 1γ and the dewatering shaft 13, and the centrifugal force generated by the rotation causes the water coming out of the laundry (dehydrated items) to be removed. The pumped water is pumped up by passing through the inner surface of the inner tank 6, and the pumped water is discharged from each dewatering hole 23 toward the outside of the outer tank 2, and the discharged water is then The water hits the water receiving wall 24 and is received by the drain groove section 25, and then is discharged outside the machine from the drain groove section 25 of the lever through the drain port 2γ, the bypass pipe 28, and the drain pipe 20 in this order.

By the way, most of the thread waste generated from the laundry (thing to be dehydrated) during the above-mentioned washing operation, dehydration operation, etc. is from 20 to several tens of lint.
In conventional dehydration tanks, where the distance between the dehydration holes is only about 20 to 30 cm), the above-mentioned lint gets caught between the dehydration holes during dehydration operation. However, the inner tank 6 of this embodiment
Since the distance between the dehydration holes 23 provided in the dehydration tank (dehydration tank) is maintained at 50 mm or more, the above-mentioned lint does not get caught, and of course, the lint does not accumulate. Therefore, it is possible to always carry out the dewatering operation effectively, and it is also possible to prevent clogging of the drain valve 19 and other parts in the drainage system due to the detachment of the dewatering device.

Moreover, in this way, the mutual spacing of the dehydration holes 23 has been reduced to 20 mm compared to the conventional one.
~30 (am) or more (50 cm) or more means that the total number of dehydration holes 23 is substantially reduced compared to the conventional one, which makes the inner tank 6 (dehydration tank) easier to manufacture and cheaper. It's worth it.

On the other hand, Figure 4 shows the relationship between the time after the start of dehydration operation (unit: minutes) and the amount of dewatering (unit: t), and Figure 5 shows the relationship between the time after the start of dehydration operation (unit: 2 minutes) and the dehydration rate (unit: t). :%).

As is particularly clear from FIG. 5, the temperature reaches 45C% or more in 1 to 2 minutes immediately after the start of the actual operation, and reaches 50C% or more in the remaining 3 to 5 minutes.

This is true if we take a 25 (kg) item to be washed as an example.
Even if the laundry item weighs 2.5, Ckg: ] before washing and contains 10 (,!, l) of water after washing, it will weigh 5 [kg, assuming the dehydration rate is 50 (%)] after spin-drying. ], and as a result, in a short period of time, the result is actually 7゜51:
kg:] of water will be dehydrated.

In order to smoothly dewater the amount of water from the dehydration hole 23 immediately after the start of the dehydration operation, the following relationship holds true: [Amount of dehydrated water x water flow capacity of the dehydration hole 23]; The water that should be drained accumulates in the upper part of the inner tank 6, causing a temporary abnormal imbalance and causing large vibrations.

In order to solve this kind of problem, according to the inventor's experiments, the total area of the dehydration holes 23 must be set as an actual condition, taking into consideration the safety in the event that thread waste gets caught in the dehydration holes 23. is 2
Good results were obtained if the value was 00 [rILm2] or more.

In this respect, the present embodiment satisfies certain conditions, so even if the total number of dewatering holes 23 is reduced compared to the conventional method as described above, dewatering can be carried out extremely smoothly.

Incidentally, the total area of such dehydration holes 23 is 200 [Tomo 2]
The above conditions are not necessarily necessary in the present invention, and therefore, it is sufficient that the distance between the dehydration holes 23 is at least 50 (mm:) or more.

Further, the shape of the dewatering hole 23 may be any shape as long as it is not circular and allows thread waste to pass through smoothly.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings; for example, the dehydration hole 23 may be provided in the peripheral wall surface only in the upper part of the inner tank 6 (dehydration tank). Of course, the present invention may be modified and implemented as appropriate without departing from the gist of the present invention.

As explained above, this invention has dehydration holes of 50cm71 each.
By placing them at a distance of J or more, there is no chance of lint getting caught, which allows for effective dewatering at all times, without clogging drain valves or other parts, and can be manufactured at low cost. It is possible to provide an excellent dehydration tank with a large thickness.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a longitudinal sectional view of a washing machine with dehydration and dehydration to which the present invention is applied, Fig. 2 is a perspective view of its inner tank (dehydration tank), and Fig. 3 is the same. Enlarged cross-sectional view of the inner tank,
FIG. 4 is a time-dehydration amount characteristic diagram, and FIG. 5 is a time-dehydration rate characteristic diagram. In each figure, 6 is an inner tank (dehydration tank), 16 is a motor, 19 is a drain valve, 23 is a dehydration hole, and L is the distance between each dehydration hole.

Claims (1)

[Scope of utility model registration request] In a dehydration tank that has a required number of dehydration holes and shakes off moisture from the dehydrated material from each of the dehydration holes by centrifugal force due to rotation,
A dehydration tank characterized in that the dehydration holes are provided at a distance of 50 mm or more.