JPH039758B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a washing device that generates a gas-liquid mixed swirling fluid of ultra-fine bubbles using a specially structured bubble generator provided in a washing liquid circulation path.

[Problem to be solved by the invention]

Conventional washing equipment that generates air bubbles in the dye and cleaning solution in the washing tub has a structure that simply pumps air into the cleaning solution to generate air bubbles, which results in coarse air bubble particles and does not produce a strong swirling flow. A sufficient cleaning effect could not be expected.

An object of the present invention is to provide a washing device that can generate water, cleaning agent, and air into a strong gas-liquid mixed swirling fluid filled with ultrafine bubbles through a specially structured bubble generator. .

[Means to solve the problem]

The above-mentioned object of the present invention is to attach a bubble generating device 5 communicating with the inside of the cylindrical washing tub 1 in a tangential direction inside the cylindrical washing tub 1, and to connect the washing tub 1 to the pump 3, the air introduction device 4, and the bubble generating device. The air bubble generating device 5 is constructed by piping a cleaning liquid circulation path 2 that flows back into the washing tub 1 through A current transformation mechanism A is constructed by closing chord side edges 7, 7 on the upstream side of the intersection with a triangular partition plate 8, and the arc side peripheral edges 9, 9 of the blades are joined to the inner circumferential wall surface of the flow pipe 10. This is achieved by a washing device in which a large number of impacting bodies B are fixed to the inner circumferential wall surface of the flow pipe on the downstream side of the current changing mechanism A.

The pipe 4' of the air introduction device 4 is connected to the bubble generator 5.
It may be made to penetrate the axis of the current transformation mechanism A and be assembled integrally.

The washing tub 1 has a cylindrical body 1 that protrudes upward inside near the center of the bottom and has an opening 11' at the top.
1 may be provided, and the lower end of the cylindrical body 11 and the circulation path 2 may be connected by a pipe 12.

[Action of the invention]

The washing liquid in the washing tub 1 is given a predetermined pressure through two circulation paths and a circulation pump 3, and is passed through an air introduction device 4.
and/or the air introduction device 4′ of the bubble generator 5
It is sent to the bubble generator 5 while being accompanied by air from the air.

Inside the bubble generator 5, a pair of flow transformation channels 19, 19 are formed, which are partitioned by the blades 6, 6 of the current transformation mechanism A, the partition plate 8, and the inner peripheral wall of the flow pipe 10, so that a predetermined flow rate can be achieved. The cleaning liquid and air in the pressurized circulation path 2 pass through the narrowed flow-variation paths 19, 19, and are appropriately accelerated in the direction of being guided to the blades 6, 6 at a circumferential velocity and centrifugal acceleration. It flows through the flow pipe while swirling along the flow bed. As a result, the washing liquid and air are divided into an outer droplet dispersed phase fluid (liquid fluid) and an inner bubble dispersed phase fluid (gaseous fluid).
The fluid is divided into two concentric swirling fluids with different densities and flow velocities. When the swirling fluid having a double concentric structure with different densities and flow velocities generated in this way collides with the impactor B provided on the inner wall of the downstream flow pipe, turbulent flow occurs, a reverse flow occurs, and the subsequent wake flow is sucked. , Countless fine bubbles are generated by the stirring action. Since the cleaning liquid in the washing tub 1 is repeatedly circulated through the circulation path 2, it gradually becomes a gas mixture containing countless fine bubbles, and the bubble generator 5
is installed facing the inner tangential direction of the washing tub 1, and since the cylinder 1 is arranged in the center of the washing tub 1, the bubble mixed fluid in the washing tub 1 becomes a uniform swirling flow inside the tub. It rotates, and due to centrifugal force, the outside rises as shown in the imaginary line in Figure 1. Since a predetermined amount of cleaning liquid is introduced into the washing tub 1 sequentially from the inlet 20, when the tubular body 11 is provided in the washing tub 1, when the gas-liquid mixed fluid exceeds a certain amount, the tubular body 11 in the center is opening 1
1', is returned to the circulation path 2 through the pipe 12,
In addition, a part of the cleaning liquid containing laundry dirt is discharged to the outside of the system via the drain 17.

[Embodiments of the invention]

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 1 and 2, the washing tub 1 preferably has a configuration in which cylindrical containers are arranged vertically, and the cleaning liquid inside is led out from the bottom and returned to the washing tub. A circulation path 2 is provided for this purpose.

A pump 3 and air introduction devices 4, 4' are arranged within the circulation path 2, and a bubble generator 5 is provided downstream thereof. Although the structure of the bubble generator 5 will be described in detail later, it is preferably attached to the inner side of the peripheral wall so as to face in the tangential direction of the washing tub 1 as shown in FIG. The air introduction device 4 may be provided either upstream or downstream of the pump 3, but is preferably provided between the pump 3 and the bubble generator 5 as shown in the figure, and in the bubble generator 5 itself (see FIG. 5). ). of course,
You can just put it in either one.

As shown in FIG. 3, a preferred specific example of the microbubble generator 5 is a pair of semi-elliptic blades 6, 6 whose chord sides 7, 7 intersect and which are located at the chord side edges upstream of the intersection. 7, 7 is closed with a triangular partition plate 8.
is fixed so as to be joined to the inner peripheral wall surface of the flow pipe 10, and a plurality of colliding bodies B are fixed in an appropriate balance to the inner peripheral wall surface of the flow pipe on the downstream side of the flow transformation mechanism A. be.

As shown in FIG. 4, the collision body B preferably has a lower part formed into an inverted truncated frustum b ₁ and an upper part formed into a protrusion approximately formed into a hemisphere b ₂ .

FIG. 5 shows another embodiment of the bubble generator. In this embodiment, the tip of the air introduction pipe 4' from the outside is passed through the axis of the current changing mechanism A as shown in the embodiment in FIG. As a result, air is sucked into the negative pressure portion generated near the shaft center downstream of the current changing mechanism A in a self-priming manner or is sent by a pump or the like. Of course, when the means for introducing air into the circulation path 2 is the air introduction device 4 shown in Fig. 1, and when the air introduction pipe 4' of the self-priming bubble generator shown in Fig. 5 is used, air is introduced from both. There are various methods such as cases.

As shown in FIGS. 1 and 2, a preferably cylindrical body 11 having an opening 11' at the top is fixed near the center of the bottom of the washing tub 1 so as to protrude upward inside the tub 1. A pipe 12 extending from the lower end of the cylindrical body 11 is connected to the cleaning liquid circulation path 2 via a valve 13. Thus, when the cleaning liquid in the washing tub 1 exceeds a certain amount, it flows into the circulation path 2 from the opening 11' of the cylinder 11 through the inside of the cylinder and the pipe 12. As described above, the cylinder 11 has the function of keeping the amount of liquid in the washing tub 1 constant and uniformizing the flow velocity of the swirling flow in the washing tub 1. It functions to discharge debris, garbage, filth, etc. to the outside of the tank.

In the figure, arrows indicate the flow of cleaning fluid, 14 is a valve, 15 is a check valve, 16 is a pump, 17 is a drain, and 18 is a fresh water intake port.

Although the detergent is normally introduced from above the washing tub 1, the detergent is not limited to this, and may be introduced from the middle of the circulation path 2.

The present invention can be used not only for washing clothes, etc., but also for washing tableware, etc. Particularly when cleaning tableware, etc., by mixing fine particles such as plastic (not shown) in the above-mentioned cleaning liquid, the fine particles vigorously ejected from the bubble generator 5 will hit the surface of the object to be cleaned and remove stubborn particles such as oil. Since it removes dirt, it can eliminate the generation of air bubbles and dirt, resulting in an even better cleaning effect.

[Effects of the Invention] As described above, the present invention performs cleaning by converting the cleaning liquid into a gas-liquid mixed fluid containing a large amount of fine bubbles, so that the cleaning effect is significantly improved as described below.

(1) Compared to conventional washing machines with the same capacity, washing time and detergent consumption can be reduced to 1/3.

(2) Stain removal was good, the color improved, and the gloss was equivalent to that of a new product. This effect was not possible with the prior art.

(3) Conventionally, it was necessary to use a softer (fabric softener) because the clothes became hard after washing, but in the present invention, the softness is maintained, so a softer is no longer necessary.

(4) In conventional washing machines, it is necessary to maintain the washing water at around 40°C in order to remove dirt sufficiently, so steam was used for this purpose, but with the present invention, sufficient cleaning effect can be achieved even at 6 to 8°C. As a result, steam is no longer necessary.

(5) In the present invention, pre-washing was not necessary, and one rinse was sufficient.

(6) Furthermore, according to the present invention, the finish of blankets, sweaters, etc. after washing becomes softer, there is no possibility of pilling as in the conventional method, and sand can be completely removed from the carpet.

The above explanation has mainly been about the case where the present invention is applied to washing clothes, bedding, etc. However, the present invention is not limited to this, and can be widely used for pre-treatment of plating and other cleaning in general, and is extremely useful industrially.

[Brief explanation of the drawing]

FIG. 1 is a flow sheet of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line -- in FIG. 1, FIG. 3 is an enlarged partially cutaway perspective view of the bubble generator, and FIG. , FIG. 5 is a view corresponding to FIG. 3 of a bubble generator according to another embodiment. 1...Washing tub, 2...Circulation path, 3...Pump,
4...Air introduction device, 5...Bubble generator, 6...
...Semi-elliptical wing disc, 8...Partition plate, 11...Cylinder body.

Claims (1)

[Scope of Claims] 1. A bubble generating device 5 communicating with the inside of the cylindrical washing tub 1 is installed in a tangential direction inside the cylindrical washing tub 1, and a pump 3, an air introduction device 4, and the bubble generating device are connected from the washing tub 1 to the pump 3, the air introduction device 4, and the bubble generating device. The bubble generating device 5 has a pair of semi-elliptic blades 6, which intersect the chord-side side edges 7, 7, and The current transformation mechanism A is constructed by closing between the chord side edges 7, 7 on the upstream side of the intersection with a triangular partition plate 8. A washing machine characterized by having a structure in which a large number of collision bodies B are fixed to an inner circumferential wall surface of a flow pipe on the downstream side of the current transformation mechanism A. 2. A patent claim characterized in that the pipe 4' of the air introduction device 4 drawn from the outside of the flow pipe 10 is passed through the axis of the current transformation mechanism A of the bubble generator 5 and assembled integrally. The washing device according to item 1. 3. A cylindrical body 11 is provided near the center of the bottom of the washing tub 1, protruding upward inside and having an opening 11' at the top, and the lower end of the cylindrical body 11 and the circulation path 2 are connected by a pipe 12. A washing device according to claim 1 or 2.