KR930000527B1 - Electric vacuum cleaner - Google Patents

Abstract

The vacuum cleaner using Bernoullitheorem and liquid filtering media, comprises a filtering water tank (7), middle separating casing (8), mesh net B (12a) for performing multi-stage filtering; float guide (10) and upper cap (11) for blocking vertical way of the casing (8) and center hole (8b); pressure sensor (15) for detecting pressure difference generated from blocking of the bloat (10a); multiple switch operated by solenoid (18), for safety blocking.

Description

Filter-free liquid filtration vacuum cleaner

1 is a perspective view of the assembled use state of the present invention.

2 is an exploded perspective view showing the internal structure of the present invention.

3 is a cross-sectional view of a normal operating state of use of the present invention.

4 is a cross-sectional view of the state of water intake water level during cleaning of the present invention.

5 is a power supply circuit diagram of the cleaner of the present invention.

6 is a closed cross-sectional view of the pressure sensor and switch c in the normal operating state of FIG.

(b) Sectional view of the open state of the pressure sensor and switch c at the level of water during water cleaning of FIG.

7 is a cross-sectional view of another embodiment of the present invention filtration unit.

* Explanation of symbols for main parts of the drawings

1 body 2 filter unit

3: main body case 4a: switch A

4b: switch B 4c: switch C

5: outlet 6: inlet

7: Filtration tank 7a, 7b: annular rib

7c: hole 8: intermediate containment

8a: Border (Before) 8e: Downward Rib

9: Internal containment container 9b: Recovery gap

10: float guide 10a: float

10b: spout 11: the upper cap

12: mesh A 12a: mesh B

12b: mesh frame 13: absorption band

14: fan cover 15: pressure sensor

16: fan 17: motor

18: Solenoid 19: Packing

22: raising

The present invention relates to a vacuum cleaner, in particular, by using a liquid as a filter medium and giving a partial pressure difference and a flow rate change according to Bernoulli theorem, so that the rise of the liquid as a filter medium can be controlled and at the same time appropriate for the water cleaning function. It relates to a filter-free liquid filtration vacuum cleaner having an automatic power off function by a pressure sensor when the above liquid is sucked in.

In general, the vacuum cleaner rotates the fan with a motor installed inside to discharge the air in the cabin, so the pressure in the cabin is lower than atmospheric pressure, and a high-speed airflow is formed by this pressure difference, and the suction plate at the flexible hose end connected to the suction port is used for dust. By taking in the turbid air containing the dirt, the dust is removed by the dust collecting filter as a filter device, such as the end of the band and only clean air is discharged to the outside.

Such a conventional vacuum cleaner uses a solid filter made of a bag-shaped paper filter, a sponge, or a pleated cloth. Such a filtration device needs to be replaced or cleaned at any time after use. It was not good for hygiene.

In addition, the solid filter method such as paper or cloth is blocked by the fine pores of the filter by the dust sucked in continuous use, the suction power is sharply reduced, and the large dust is blocked, but the fine dust that directly harms the human body is filtered along with the air. Although it looks neat by seeing it through the road and spreads it back inside, it is actually not good for hygiene because it makes the indoor air more turbid, and if the moisture (water) or sharp glass is inhaled, the filter itself is damaged. Not only do not achieve the effect of the fan damage due to foreign matter inflow of the cleaner may cause a breakdown of the hygiene and economic problems were exposed.

That is, the conventional solid filter method has a mutual relationship between the suction force and the filtration rate, so that the filtration filter must be entangled in order to increase the suction power, and thus the filtration rate is lowered. On the contrary, when the filter is densified to increase the filtration rate, the suction power is lowered. It was not possible to solve by the solid filter method.

In order to improve such a conventional problem, the applicant has proposed a method of using a liquid having a high fluidity as a filter medium instead of removing the conventional solid filter in the first application No. 90-1919, which sucks a large amount of liquid during the water cleaning function If there is no self control function, the problem of water cleaning function was raised.

Therefore, the present invention constitutes a multi-stage filtration space to double the filtration efficiency, and also detects when a pressure difference occurs due to a blow-off block caused by a float operated according to the water level rise, and a vacuum cleaner having a pressure sensor functioning to cut off the power. The purpose is to provide.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an assembled perspective view of the present invention.

It is divided into upper body 1 with built-in fan and motor and lower filter unit 2, and carrying handle 3a switch A (push-on) (top of case 3) of main body 1 4a), a switch B (push-off) 4b is exposed to the outside, and an annular coupling force 5a and an outlet 5 below are formed on the side thereof.

On one side wall of the upper end of the filtration device 2, there is a suction port 6 to which the flexible hose 6a is fastened, and a plurality of coupling hawks 5b for close contact with the main body 1 are provided. At the bottom, a rim (2a) is installed to firmly protect the water tank (7) of the filtration unit (2) and moved by a caster (2b) to facilitate movement when using the cleaner.

2 is an exploded perspective view showing the internal structure of the present invention. Filtration unit 2 is composed of a separate filter water tank (7) and the intermediate isolation container (8), the inner isolation container (9), the secondary guide (10) and the upper cap (11), respectively, the intermediate isolation container (8) Between the tank (7) and the mesh paper B (12a) solidified by the network member (12b) was installed, the absorption band 13 was installed on the upper cap (11). In addition, a pressure sensor 14 for operating the switch C 4c is installed at the lower end of the main body 1, and a solenoid 18 for operating the switch D 4d is mounted therein. The filtration water tank 7 serving as the case of the filtration unit 2 is a container containing liquid, and a suction port 6 and a plurality of coupling hawks 5b are installed on the side wall, and two annular ribs 7a are provided at the bottom of the inside. , (7b) is formed concentrically. In the upper end of the outermost annular rib (7b) is a large number of relatively large holes (7c) are punctured a large number of dirt in the middle of the inhaled dirt and passes only small and light dust and air.

Intermediate isolation container (8) is formed at the upper edge (front) (8a) and the bottom is provided with a rubber packing A (19) to be in close contact with the upper end of the filtered water tank (7). The bottom is concave, and the central hole 8b is installed in the center, and the upper rib 8c with the mesh A 12 is attached to the upper part of the central hole 8b, and the lower rib 8d extending downward. have.

In addition, there is a downward rib 8e having a step 8f formed so as to be able to install the mesh paper B 12a on the inner side in a concentric manner. The inner isolation container 9 has a top and a bottom portion penetrated and the center block is formed so that the upper side is connected to the subsidiary guide 10 and the lower side is coupled to the outer edge of the upper rib 8c of the intermediate isolation container 8.

The middle part (room B) of the inner isolation container 9 is a relatively large space where the flow rate is reduced by the Bernoulli theorem during operation, whereby the rise of the liquid is suppressed and the sucked liquid is collected. In addition, a plurality of gap holding ribs 9a protrude from the side wall of the inner isolation container 9 so as to be held in the inner wall of the intermediate isolation container 8 so as to maintain a constant gap when the liquid is splashed. To form a recovery gap (9b) to recover the road and to prevent oscillation during operation. The inside of the float guide 10 coupled to the upper portion contains a float 10a made of a relatively dense material, so when the water suction cleaning, the float 10a floats on the liquid surface. Rising according to the water level to block the upper outlet 10b.

The side wall of the float guide 10 is almost incised so that the float 10a is not detached and the bottom 10c is shielded so that water droplets splashing from the central hole 8b are scattered in all directions. The upper cap 11 adjusts the flow of air and is divided into an upper end and a lower end by a central diaphragm 11a. A plurality of cap support protrusions 11d are formed on the outer surface of the upper upper rib 11b so that the upper rib 11b is fixed to the inner wall of the intermediate isolation container 8 and is fixed at the bottom of the diaphragm 11a. The gap protrusion 11e was formed. An absorption band 13 is installed inside the upper end of the diaphragm 11a. The fan cover 14 of the main body 1 has a pressure sensor 15 actuated by a pressure difference, and a switch C 4c controlled by the pressure sensor 15 is installed inside.

3 is a cross-sectional view showing a normal operating state of the present invention and FIG. 4 shows a state in which the power is cut off as the water suction only water level during the water cleaning function of the present invention. The present invention is divided into a plurality of spaces such as A (A ₁ , A ₂ , A ₃ , A ₄ ), B, C, D, E, F, G, as shown in FIG.

The effect of operation will be explained according to the sectional view of the normal operating state of FIG.

The air containing the dirt sucked in through the suction port 6 hits the outer wall of the intermediate containment barrel 8 and descends downward to swirl in the chamber A formed by the outer annular rib 7b in the water tank 7.

At this time, the large foreign matter is separated and stored in the chamber A, and the air and the fine dust move through the hole 7c on the upper side of the outer annular rib 7b and pass under the downward rib 8e at the bottom of the intermediate isolation container 8. After entering the thread A ₁ thread again through the mesh B (12a) to thread A ₂ again through the mesh B (12a) to thread A ₃ through the mesh B (12a) to thread A ₄ .

At this time, the fine dust contained in the air is completely eliminated in the process of mixing the liquid several times while passing through various spaces.

Again, the bubble is broken again while passing through the network A 12 installed on the upper side of the center hole 8b of the intermediate containment container 8 and then mixed into the internal containment container 9. Since the bottom 10c of the float guide 10 installed in the inner containment container 9 is blocked, the splashing water droplets collide with each other and flow down. Since the central portion of the inner isolation container (9) forms a large space (room B), the flow rate decreases according to the Bernoulli's theorem, so that the liquid having a high density is separated from the gas and the rise is controlled, and only the gas is raised. In this process, fine dust and other dirt are completely filtered and remain with the liquid.

Ascending gas moves through the side cutout 10d of the float guide 10 and passes through the spout 10b of the upper portion of the float guide 10 so that the flow rate is increased again to flow into the C chamber. It hits the bottom part of the diaphragm 11a, and the flow direction changes, and the flow changes downward again by the lower rib 11c. The liquid that sometimes rises as the gas flows through the gap 11e of the upper cap 11 lower rib 11e has a higher specific gravity than the gas, so the inner isolator can be separated by the centrifugal force due to the rapid flow rate and rapid flow direction change. It collides with the outer surface of) and flows down into the yarn E along the inclined surface 9c as indicated by the dotted line. The end of the yarn E, that is, the coupling portion between the intermediate isolation container 8 and the internal isolation container 9, has a slight gap to form a recovery gap 9b.

Recovery gap (9b) is a relatively small central hole (8b) portion of the flow rate is fast because the partial pressure is lowered to act as a Venturi tube (Venturi tube) so that the liquid collected in the E chamber is easily recovered.

The air introduced into the chamber D rises again, passes through the chamber F, passes the fan 16, enters the chamber G, and is discharged through the non-outlet 5. An upper end of the upper cap 11, that is, the F chamber is provided with an absorption band 13 to absorb even minute moisture.

4 shows the moment when the power is turned off due to the maximum water suction due to the water cleaning function. The spout guide 10 installed in the inner isolation container 9 is inserted into a spout 10a of a small density material and spun according to the level of the sucked water and spouted according to the level of the suctioned water, so that the spout guide 10 at the top of the float guide 10 may have a high water level as shown in FIG. 10b) blocks the upper surface of the float 10a. That is, as the jet port 10b is blocked, the air pressure in the C, D, and F chambers decreases rapidly, and a significant air pressure difference occurs between the F chamber and the G chamber around the fan cover 14. At this time, the power supplied to the main body by the pressure sensor 15 installed between the fan cover 14 is cut off to prevent excessive water intake. 5 is a power supply circuit diagram of the present invention, a solenoid 18 in which a main body motor 17, three switches A (4a), a switch B (4b), and a switch C (4c) are connected in series and in parallel with the motor 17. The switch D (4d) actuated by the switch is connected in parallel to the switch A (4a).

The switch C (4c) is a push-on switch, the piston 15b is pushed by a spring (15a) having an appropriate elastic force in the pressure sensor 15 as shown in (a) of FIG. ) Terminals remain connected. At the bottom of the pressure sensor 15 has a vent (15c) to ensure a smooth operation by the pressure difference. In addition, when the water cleaning function reaches the full water level (FIG. 4 attached to the drawing), since the jet port 10b is blocked by the buckle 10a, a sudden air pressure difference occurs between the F chamber and the G chamber with the fan cover 14 as a pressure sensor. The piston 15b in (15) is lowered and the switch C (4c) is opened.

Switch B (4b) is a push-off switch that normally turns off the power by pressing it when it is closed, when the cleaning operation is completed, or when it is arbitrarily stopped. The switch D (4d) is a push-on switch that is normally open (stopped) and continuously connected by the solenoid 18 during circuit conduction.

Therefore, once the power supply is cut off on the power supply circuit of the present invention, power is not supplied to the solenoid 18. Therefore, unless the start switch, that is, the switch A 4a is pressed, the operation is not performed. That is, when water is inhaled above the full water level during the water cleaning, the spout 10b is blocked by the float 10a, so that the switch C (4c) is blocked by the pressure difference, and the motor 17 and the fan 16 are stopped. Again, the pressure difference between the F and G chambers is canceled and the switch C (4c) is not supplied to the solenoid 18 even though the switch C (4c) is reconnected by the pressure sensor 15. Not supplied

7 is another embodiment of the present invention, the inner bottom of the filtered water tank 7 is convex, and one annular rib 20 is formed, and two downward ribs 21 are installed at the bottom of the intermediate isolation container. Two downward ribs 21 is characterized in that the brushed brush 22, such as a toothbrush, is evenly coupled. Raising 22 has the effect of maximizing the contact opportunity of air and liquid and has the advantage of easy management after cleaning.

Thus structured liquid filtration vacuum cleaner of the present invention non-filter method is that the dust and foreign matter coupled to the air, so by the friction that occurs while the affinity and high-speed air stream of the water passing through the flexible hose takes on the static water molecule structure (H ₂ O ) It is easily adsorbed by water due to the electrical polarity and mutual electrical attraction that it has, and it filters out most of the fine dirt in the air.When cleaning the filter after cleaning, simply remove the contaminated water and rinse with clean water. It is hygienic because it does not generate dust at all.

In addition, water or other sharp foreign matter, which is a problem of using a conventional cleaner, may be inhaled. Moreover, the present invention can inhale a large amount of water, and when the water level is over a certain level, there is an automatic power-off function so that the user can safely perform the water cleaning function. Because it uses liquid without the need of filter, it is economical, and even the fine dust can be collected by the liquid, but there is no certain shape due to the characteristics of the liquid, so the resistance is smaller than the solid filter method, so the suction power of the cleaner is strong, and It is made to be easy to manufacture and use by configuring to facilitate separation and assembly.

Claims (5)

In the vacuum cleaner, a multi-stage filtration space is formed by the filtration water tank (7), the intermediate isolation container (8), and the mesh paper B (12a), thereby improving the filtration rate by expanding the contact opportunity between the inhaled gas and the filtration liquid. The flow direction and velocity of the gas are drastically changed by the secondary guide 10 and the upper cap 11 which block the direct path of the inner isolation container 9 and the central hole 8b having a large inner central space. In order to prevent the inflow and to recover itself, and to provide a safety shut-off function by multiple switches actuated by the pressure sensor 15 and the solenoid 18 for detecting the pressure difference generated by the path blocking by the mouth 10a. Filterless liquid filtration vacuum cleaner, characterized in that. The top of the outermost annular rib (7b) of the bottom of the filtered water tank (7), a plurality of holes (7c) are drilled, the meshed paper (12b) of the net paper B (12a) is an intermediate containment barrel (8). And a plurality of filtration spaces are formed together with the annular ribs (7a, 7b) of the filtration water tank (7) so as to be fastened to the downward rib (8e) of the). According to claim 1, the side guide (10) is cut off the side wall (10d) and the bottom (10c), the inside is installed so that the float (10a) having a specific gravity less than 1 flows in the water tank (7) Filter-free method characterized in that the power level is automatically cut off by the pressure sensor 15 for detecting the air pressure difference between the F chamber and the G chamber generated when the float 10a rises to block the spout 10b. Liquid filtration vacuum cleaner. The method of claim 1, wherein the intermediate isolation container (8) and the inner isolation container (9) to form a water droplet recovery gap (9b) so that the raised liquid is self-recovered, the upper end of the upper cap (11) Filter-free liquid filtration vacuum cleaner, characterized in that it is installed to block even the fine moisture in the air. The method of claim 1, wherein the filtered water tank (7) is convex in the bottom center and the annular rib 20 is formed, a double downward rib (21, 21 ') is formed at the lower end of the intermediate containment barrel (8) Filterless liquid filtration vacuum cleaner, characterized in that the brushed (22) is laid.

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