JPH039759B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention generates a gas mixture fluid of ultra-fine bubbles using a specially structured bubble generator provided in the circulation path of a mixing tank, and rotates this micro-bubble fluid. The present invention relates to a washing device that is installed in a drum-type washing tub to wash laundry.

[Problem to be solved by the invention]

Conventional washing devices that generate air bubbles in the cleaning liquid in the washing tub have a structure in which the air bubbles are generated by simply pumping air into the cleaning liquid, so the air bubble particles become coarse and a sufficient cleaning effect cannot be obtained.

The purpose of the present invention is to generate water, cleaning agent, and air into a gas-liquid mixed fluid filled with ultrafine bubbles through a specially structured bubble generator, and introduce this gas-liquid mixed fluid into a rotating drum washing tub. By washing with
To provide a washing device that can cleanly wash large laundry items such as carpets.

[Means to solve the problem]

The above object of the present invention is to provide a mixing tank 1 containing a cleaning liquid.
A bubble generator 6 communicating with the inside of the mixing tank 1 is provided in the tangential direction of the inside of the mixing tank 1, and a pump 4 is connected from the bottom of the mixing tank 1.
The cleaning liquid circulation circuit 3 is piped to flow back into the mixing tank 1 via the air introduction device 5 and the bubble generator 6, and the downstream end of another pipe 9 communicated with the mixing tank 1 is connected to the cleaning fluid circulation circuit 3. A washing device connected to a tub 2, in which the bubble generator 6 intersects the chord-side side edges 13, 13 of a pair of semi-elliptical blades 12, 12, and the chord side upstream from the intersection. Side edge 1
3, 13 is closed with a triangular partition plate 15, the flow transformation mechanism A is fixed in such a way that the arc side peripheral edges 14, 14 of the blades are joined to the inner peripheral wall surface of the flow pipe 11, and This can be achieved by a washing device characterized in that a large number of collision bodies B are fixed to the inner circumferential wall surface of the flow pipe on the downstream side of the current transformation mechanism A.

The pipe 5' of the air introducing device 5 may be provided so as to pass through the axis of the current changing mechanism A of the bubble generator.

More preferably, the mixing tank 1 has an opening 8' protruding upwardly near the center of the bottom and an opening 8' at the top.
A cylindrical body 8 is provided, and the lower end of the cylindrical body 8 and the washing tub 2 are communicated through a pipe 9.

[Action of the invention]

The washing liquid in the mixing tank 1 passes through a circulation path 3, is given a predetermined pressure by a circulation pump 4, and generates bubbles while being accompanied by air from an air introduction device 5 and/or an air introduction device 5' of a bubble generation device 6. It is sent to device 6.

Inside the bubble generator 6, there is a blade plate 1 of the current changing mechanism A.
2, 12, the partition plate 15, and the inner circumferential wall of the flow pipe 11 form a pair of variable flow paths 22, 22, so that the cleaning liquid and air in the circulation path 3 given a predetermined pressure are These squeezed flow variable channels 22, 22
, and flows through the flow pipe while swirling along the flow bed with appropriately accelerated circumferential velocity and centrifugal acceleration in the direction guided by the blades 12, 12. As a result, the cleaning liquid and air are divided into an outer droplet-dispersed phase fluid (liquid fluid) and an inner bubble-dispersed phase fluid (gaseous fluid), which are transformed into a double concentric swirling fluid with different densities and flow speeds. It will be done. When the swirling fluid having a double concentric structure with different densities and flow velocities generated in this way collides with the collision body B provided on the inner wall of the downstream flow pipe, turbulence 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 mixing tank 1 is repeatedly circulated through the circulation path 3, it gradually becomes a gas-liquid mixture containing countless microscopic bubbles, and the bubble generator 6 is installed facing the inner tangential direction of the mixing tank 1. Therefore, the gas-liquid mixed fluid in the mixing tank 1 becomes a swirling flow and swirls inside the tank, and due to the centrifugal force, the outside rises as shown by the imaginary line in FIG. In order to introduce a predetermined amount of cleaning liquid into the mixing tank 1 sequentially from the inlet, the mixing tank 1
When the gas-liquid mixed fluid exceeds a certain amount, it is guided to the washing tub 2 through the pipe 9 from the opening 8' of the cylinder 8 in the center.

In the washing tub 2, the beating and rinsing actions of the laundry inside and the gas-liquid mixed fluid are repeated by the rotation of the drum. As air bubbles in the liquid in the washing tub 2 gradually disappear and decrease, the liquid is discharged to the circulation path 3 via the piping 10 and is introduced into the washing tub 2 as a mixed fluid containing new air bubbles. Therefore, the washing tub 2 always holds a mixed fluid containing a large amount of air bubbles.

[Embodiments of the invention]

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

In FIG. 1, 1 is a mixing tank that generates the cleaning liquid inside into a gas-liquid mixed fluid containing countless microbubbles;
2 is a rotating drum type washing tub for washing laundry with the gas-liquid mixed fluid.

As shown in FIGS. 1 and 2, the mixing tank 1 has a structure in which a preferably cylindrical container for storing a cleaning liquid is arranged vertically, and the cleaning liquid inside is led out from the bottom. A cleaning liquid circulation path 3 is provided to circulate the cleaning liquid back into the mixing tank. A pump 4 and an air introduction device 5 are installed in the middle of the circulation path 3, and a bubble generator 6 is provided downstream thereof. Although the structure of the bubble generator 6 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 mixing tank 1. The air introduction device 5 may be provided either upstream or downstream of the pump 4, but preferably between the pump 4 and the bubble generator 6 as shown in the figure, and/or between the bubble generator as shown in FIG. 6 itself.

Further, near the center of the bottom of the mixing tank 1, a preferably cylindrical body 8 having an opening 8' at the top is fixed so as to protrude upward into the interior of the mixing tank. A pipe 9 is disposed between the lower end of the cylinder 8 and the washing tub 2, so that when the cleaning liquid in the mixing tank 1 exceeds a certain amount, it flows from inside the cylinder 8 into the washing tub 2 via the pipe 9. I'm starting to do that. The cylindrical body 8 has the function of keeping the liquid amount in the mixing tank 1 constant as described above, and also has the function of making the flow velocity of the swirling flow in the tank uniform.

A pipe 10 is provided between the washing tub 2 and the circulation path 3, and the cleaning liquid flowing out from the washing tub 2 is circulated to the mixing tank 1 via the circulation path 3.
In the illustrated embodiment, the washing tub 2 uses a known drum-type beating tub that is rotated by a drive device (not shown).

The most preferable example of the micro-bubble generator 6 is as shown in an enlarged view in FIG. The arc-side peripheral edges 14, 14 of the vanes 12, 12 are connected to the flow pipe 1.
1, and a plurality of colliding bodies B are fixed to the inner circumferential wall of the flow pipe on the downstream side of the flow transformation mechanism A in an appropriate balance. The impactor B is preferably as shown in FIG.
The lower part is formed into an inverted truncated frustum b ₁ , and the upper part is approximately hemisphere b ₂
It consists of a protrusion formed on the surface.

FIG. 5 shows another embodiment of the bubble generator 6, in which air is introduced from the outside through a pipe 5'.
The tip of the current transformation mechanism A is passed through the axis of the current transformation mechanism A as shown in the embodiment in FIG. It is designed to attract Of course,
The means for introducing air into the circulation path 3 may be the air introduction device 5 shown in Fig. 1, the air introduction pipe 5' of the self-priming bubble generator shown in Fig. 5, or the air introduced from both. There are various methods such as

In addition, the arrow in the figure indicates the flow direction of the cleaning liquid.
17 is a valve, 17 is a check valve, 18 is a pump, 19 is a pressure gauge, 20 is a drain, and 21 is a fresh water intake port.

Note that detergent is normally poured into the washing tub 2 from above, but the detergent is not limited to this, and may also be poured into the mixing tub 1.
Furthermore, it can also be introduced from the circulation path 3.

〔Effect of the invention〕

As described above, in the present invention, cleaning is performed using a cleaning liquid as 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 (softener) because the clothes became hard after washing, but in the present invention, the softener is retained, 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. This made steam unnecessary.

(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, but 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 drawings]

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...Mixing tank, 2...Washing tub, 3...Washing liquid circulation path, 4...Pump, 5...Air introduction device, 6...
...Bubble generator, 8... Cylindrical body, 12... Semi-elliptical blade, 15... Partition plate, A... Current transformation mechanism, B...
Colliding body.

Claims (1)

[Claims] 1. In the tangential direction of the inside of the mixing tank 1 containing the cleaning liquid,
A bubble generator 6 communicating with the inside of the mixing tank is provided,
Pump 4 and air introduction device 5 from the bottom of mixing tank 1
A cleaning liquid circulation circuit 3 that flows back into the mixing tank 1 via the bubble generator 6 is connected to the washing tank 2, and the downstream end of another pipe 9 that communicates with the mixing tank 1 is connected to the washing tank 2. It is a washing machine with
The bubble generator 6 includes a pair of semi-elliptical blades 1
The current transformation mechanism A is constructed by intersecting the chord side edges 13, 13 of 2 and 12 and closing the space between the chord side edges 13, 13 on the upstream side of the intersection with a triangular partition plate 15. The arc side peripheral edges 14, 14 are fixed so as to be joined to the inner peripheral wall surface of the flow pipe 11, and a large number of collision bodies B are fixed to the inner peripheral wall surface of the flow pipe on the downstream side of the current transformation mechanism A. A washing device characterized by: 2. The pipe 5' of the air introduction device 5 drawn from the outside of the flow pipe 11 is passed through the axis of the current transformation mechanism A of the bubble generator 6. washing equipment. 3. A cylindrical body 8 is provided near the center of the bottom of the mixing tank 1, protruding upward inside and having an opening 8' at the top;
The washing device according to claim 1 or 2, characterized in that a pipe 9 is provided between the cylindrical body 8 and the washing tub 2.