JPH0350853Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an aqua filter vacuum cleaner, and particularly to a waterproof device thereof.

(Background technology) Dust-containing air flow sucked in by a fan collides with the water storage surface to which a unidirectional rotational force is applied by high-speed rotation of a separator, and the separator separates water and clean air into dust. Aqua filter vacuum cleaners are known that collect residual air in stored water while exhausting clean air.

However, such conventional aqua filter vacuum cleaners naturally have a pressure difference between the upper and lower parts of the rotating separator, and while the clean air is separated from dirty water by the slits in the high-speed rotating separator, it is sucked from the lower water storage tank into the upper fan case. However, because of this pressure difference, there was a risk that sewage would seep into the gap between the outer periphery of the rotating separator and its surrounding components, wetting or staining the motor and fan.

(Purpose of the invention) The present invention was made in view of the above-mentioned problems of conventional aqua filter vacuum cleaners, and its purpose is to provide a waterproofing device for an aqua filter vacuum cleaner that effectively prevents the penetration of sewage. shall be.

(Structure of the invention) In accordance with the above object, the present invention recirculates the exhaust air of the vacuum cleaner itself to pressurize between the rotating separator and the holder of the motor case with the fan. A rotating separator is provided between the motor case and the lower water tank, and the holder of the motor case with a fan is provided with an exhaust air return path that communicates with the outer periphery of the rotating separator. The gist of this invention is a waterproofing device for an aqua filter vacuum cleaner, which is characterized in that it can be pressurized freely by discharged air.

The present invention will be described below with reference to drawings showing embodiments. In the drawings, 1 is a waterproofing device for an aqua filter vacuum cleaner according to the present invention, and the waterproofing device 1 includes a motor case 3 with a fan and a lower water storage tank. Aqua filter vacuum cleaner 2 equipped with a rotating separator 5 between 4
It will be set up in

The vacuum cleaner 2 has a fan attached to the motor 6 and rotates at a high speed of 13,000 to 17,000 rpm in the cylindrical fan-equipped motor case 3, and a cartridge-type water tank 4 is detachably provided below. There is. Between the upper motor case 3 with fan and the lower water tank 4, there is a separator 5 in the shape of a dimple with a large number of slits 7 (vertically straight or diagonally spiral, etc.) formed through the side wall. The separator 5 is fixed to a motor shaft 8 and rotated at high speed together with a fan. In addition, motor case 3 with fan,
The water tank 4 and the separator 5 may be made of metal such as stainless steel or aluminum alloy, or synthetic resin. Further, reference numeral 9 in the figure denotes a spider which is radially fixed to the motor shaft 8 and fixedly supports the outer circumferential upper end of the separator 5, and is constructed integrally with the separator 5 and rotates.

Here, to explain the operating state of the vacuum cleaner 2 in advance, the dust-containing air sucked from a nozzle (not shown) by the rotation of the fan passes through a hose and flows from the integral suction port 11 of the vacuum cleaner main body case 10 to the lower water storage tank of the vacuum cleaner. 4. Here, the water is stored using the water level mark 12 integrally provided in the center of the tank as a guide, and the opening 1 inside the vacuum cleaner of the integral suction port 11 is
3 is located near the top of this static water level surface, but when the vacuum cleaner is in operation, the stored water swirls violently due to the high speed rotation of the separator 5, so the dust-containing air flow collides with and mixes with this rotating water storage surface. becomes.

Since the air is still sucked upward due to the pressure difference caused by the fan, the air purified through the water storage flows through the slit 7 of the separator.
It is sucked into the fan-equipped motor case 3 through... On the other hand, the stored water containing residual dust is swirling violently in the tank 4, but since the slits 7 of the separator rotate at high speed, the dirty water is repelled and does not enter upward through the slits. .

In addition, 14 in the figure is the power switch of the motor, 1
5 is a storage compartment for the power cord reel formed further below the water tank, and 16 is a removable socket-type external connection cord that connects the lower cord reel to the upper motor and power switch. Otherwise, the upper part of the vacuum cleaner and the cartridge type lower water storage tank 4 cannot be separated. On the other hand, reference numeral 17 designates a large number of clean air discharge ports formed in the side wall of the cylindrical fan-equipped motor case 3, and reference numeral 18 designates external clean air discharge ports formed in the vacuum cleaner main body case.

The waterproof device 1 of the present invention includes a motor case 3 with a fan in the aqua filter vacuum cleaner 2.
The holder 19 is provided with a discharge air recirculation path 21 that communicates with the outer circumference 20 of the rotary separator 5 (see FIG. 2).

That is, in the figure, 22 is a rubber cushioning airtight material fixed to the vacuum cleaner main body case 10, and 23 is a packing, the lower surfaces of which are in contact with the upper end surface of the cartridge type water storage tank 4 located below. It is said to be in close contact and detachable.

Reference numeral 19 in the figure denotes a flat ring-shaped holder that is fixed to the buffer airtight material 22 with an embedded pin 24 and that fits and holds the lower bottom peripheral edge of the motor case 3 with a fan. Instead of holding the fan-equipped motor case 3 in close contact with the entire circumference, the retaining protrusion 25 in the figure is provided to hold the fan-equipped motor case 3 from below. Eight narrow groove-shaped exhaust air return passages 21a having a flow passage cross-sectional area of 2 mm ² to 3 mm ² are carved in a portion of the circumference of the ring and are arranged at equal intervals radially toward the center of the ring.

The groove-shaped exhaust air recirculation path 21a communicates with the exhaust port 17 on the side wall of the fan-equipped motor case, and allows a portion of the fan-pressurized exhaust air from the case to flow in, while a portion slightly on the inside thereof After passing through the air retainer 21b, eight passages with a cross-sectional area of 2 mm ² to 3 mm ² are provided inside the air trap 21b at 8 locations aligned with the groove-shaped return passages and radially equidistantly spaced toward the center of the ring-shaped holder. hole-shaped exhaust air return path 2
It connects to 1c. The air traps may be formed as necessary, but when they are formed, they may be formed in different parts of the ring-shaped holder in alignment with the groove-shaped return passages or hole-shaped return passages. Alternatively, the groove may be formed in a series of deep grooves around the entire circumference so that each reflux passage can communicate with each other in a transverse manner.

Here, such exhaust air recirculation paths 21, 21a,
Ring-shaped holder 19 provided with 21b and 21c
As described above, the fan-equipped motor case 3 is fitted and held at the lower bottom periphery thereof, and is arranged so as to surround the outer periphery 20 of the rotary separator 5. Then, the outer peripheral portion 20 of the rotating separator 5
The separator 5 is arranged very close to the upper edge 26, leaving a clearance (0.8 mm to 1 mm in the embodiment) that allows the separator 5 to rotate smoothly. Road 21
is opened in the clearance portion 27 and communicated with the outer peripheral portion 20 of the rotary separator 5, so that the adjacent space between the rotary separator 5 and the holder 19 can be freely pressurized by exhaust air from the motor case with a fan.

In addition, 28 in the figure is the ring-shaped holder 1.
The guide protrusion is integrally provided on the inside of the rotary separator 9 around the entire circumference, and is fitted into the circumferential guide groove 29 formed on the upper edge 26 of the outer periphery of the rotary separator 5 to guide its rotation and prevent splashing of sewage. Although it also serves as a stop, the discharge air recirculation path 21 in this example is formed so as to communicate with the immediately above guide protrusion 29 .

However, although not shown in FIG. 2, the exhaust air recirculation passage 21 may be formed so as to communicate with the lower side of the guide protrusion 28. In this case, the exhaust air recirculation passage 21 may be formed to communicate with the lower side of the rotary separator 5 with which the recirculation passage 21 communicates. The outer peripheral part 20 is not limited to the upper edge part 26 which is very close to the holder 19 as in the illustrated example, but can also extend to the transparent outer peripheral part of the slit 7 below the holder 19. 5 and holder 1
It can also be performed in such a relatively spaced space between 9 and 9.

Note that the material of the holder 19 may be metal such as aluminum alloy or stainless steel, or synthetic resin.

Next, FIG. 3 shows another embodiment, in which the above-mentioned embodiment is particularly different in that it does not have the guide protrusion and the guide groove, and that the hole-shaped exhaust air recirculation passages 21c and 21d are transparently provided in two stages, upper and lower. Different from the example. Here, the upper exhaust air recirculation path 21c is transparently provided slightly above the clearance part 27 between the rotary separator 5 and the holder 19, and communicates with the outer peripheral part 20 of the separator. On the other hand, the lower exhaust air recirculation path 21d
The space between the two can be freely pressurized. Of course, these exhaust air recirculation paths 21c, 21
d may be only one of them. The planar arrangement, cross-sectional area, etc. of these return channels 21c and 21d are the same as in the embodiment described above, and the numbers in the drawings that are common to the embodiment described above have the same meanings.

Although the embodiments are configured as described above, the present invention does not cover the specific structures, shapes, materials, dimensions of the motor case with fan, the water tank, the rotating separator, the holder, and the outer circumferential part of the separator, unless it is contrary to the gist of the invention. The relationship between the rotary separator and the holder, and the specific spacing between the rotary separator and the holder can be varied.
It goes without saying that the present invention is not limited to the above embodiments.

(Effects of the invention) The present invention is equipped with a rotating separator between the motor case with a fan and the lower water tank, and the holder of the motor case with a fan is provided with an exhaust air return path that communicates with the outer periphery of the rotating separator. Since the space between the separator and the holder can be freely pressurized by the air discharged from the motor case with a fan, the sewage and its splashes that rotate violently in the water tank can be removed between the separator and the motor case holder with a fan due to the pressure difference between the upper and lower sides of the rotating separator. It is possible to effectively prevent the water from seeping up, and to protect the motors, fans, etc., from getting them wet or dirty, and to ensure the cleanliness of the exhaust air.

In addition, the waterproofing device of the present invention can freely pressurize the space between the rotating separator and the holder using exhaust air from the fan-equipped motor case, so it is only necessary to recirculate a part of the vacuum cleaner's own pressurized exhaust air, making it special. It is possible to provide a waterproofing device for an aqua filter vacuum cleaner that does not require a pressure device, has a relatively simple structure, and is economical.

[Brief explanation of the drawing]

The drawings show an embodiment, and FIG. 1 is a partially cutaway front view of an aqua filter vacuum cleaner equipped with a waterproofing device according to the present invention, FIG. 2 is an enlarged vertical cross-sectional view of the waterproofing device, and FIG. 3 FIG. 2 is an enlarged vertical cross-sectional view of the waterproofing device showing another embodiment. 1...Waterproofing device for Aquafilter vacuum cleaner, 2
... Aqua filter vacuum cleaner, 3 ... Motor case with fan, 4 ... Water tank, 5 ... Rotating separator, 19 ... Holder, 20 ... Outer periphery, 2
1, 21a, 21b, 21c, 21d...Exhaust air recirculation path.

Claims (1)

[Scope of utility model registration request] A rotating separator is provided between the motor case with fan and the lower water tank, and the holder of the motor case with fan is provided with an exhaust air return path that communicates with the outer periphery of the rotating separator. A waterproofing device for an aqua filter vacuum cleaner, characterized in that it can be freely pressurized by air discharged from the aqua filter vacuum cleaner.