JPH0612810Y2 - Dust collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to, for example, a dental dust collector, and more particularly to improvement of a dust removal mechanism in the dust collector.

(Prior Art) Conventionally, a cylindrical or envelope-shaped filter has been used as a dust removing means for dentistry.

In the case of a cylindrical filter, the filter itself is inexpensive, but if a large filter area is taken, the filter itself becomes large, and the dust collecting device inevitably becomes large.

In the case of envelope-shaped filters, the filter area can be wide,
Although it can be stored compactly, the filter is easily crushed by the suction force, so a crush preventing means is required, which is more expensive than a cylindrical filter.

By the way, the filter can be attached to the support frame either by suction from the outside of the cylindrical filter so that dust adheres to the inside or by suction from the inside so that dust adheres to the outside of the filter. There are cases.

In the case of the structure in which suction is performed from the outside of the filter as in the former case, the filter tends to expand, and the eyes of the filter expand, which is not desirable.

On the contrary, in the case of the latter structure in which suction is performed from the inside of the filter, the filter tends to contract, and the mesh of the filter shrinks, so the dust collection efficiency improves. Further, even when the dust accumulated and attached to the filter is removed, the dust adheres to the outside of the filter, so that the dust can be easily removed. Therefore, it is common to suction from the inside of the cylindrical filter.

As a structure for removing dust accumulated on the outside of the cylindrical filter, a structure of expanding and contracting the cylindrical filter in the longitudinal direction, a structure of swinging the filter in a direction orthogonal to the longitudinal direction, or a filter using a vibration motor is used. A configuration that gives vibration is adopted. In the configuration in which the filter is expanded and contracted or shaken, it is necessary to provide the drive motor outside the frame of the dust collector in terms of the configuration. In addition, in the structure for applying vibration to the filter, since there is no small vibration motor and the structure is not dustproof, it is also necessary to provide it outside the frame.

(Problems to be solved by the invention) In a conventional dust collector, a motor for removing dust accumulated on a filter is provided outside a frame of the dust collector, and the entire device is large. Turned into
It was not a satisfactory dental dust collector.

Further, conventionally, there is a problem that it is troublesome to remove the dust that has been blown off, and when the filter is damaged, it is difficult to repair it when replacing the filter.

(Means for Solving the Problems) In view of the above-mentioned conventional problems, the present invention provides a suction port in the lower frame of a frame which is constructed by integrally assembling upper and lower middle frames. And a dust collection box that can be pulled out, and a suction fan for sucking air containing dust from the suction port is rotatably provided in the upper frame of the frame and sucked from the suction port. A filter for filtering air is provided in the middle frame of the frame, and a weight frame attached to the lower part of the filter is provided with a propeller fan motor with dustproof lids attached to both sides. A weight is provided in a part of the blade of the fan motor, and the propeller fan motor is arranged in the air flow passage.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 3, the dust collector 1 includes a cylindrical frame 3, and the frame 3 can be disassembled into upper, middle, and lower frames 3a, 3b, and 3c that are integrated by bolts or the like. The air is inhaled from the suction port 5 provided on the side surface of the lower frame 3c so that air containing dust is sucked in.

The air containing dust enters the chamber 7 of the lower frame 3c, and is sucked toward the upper frame 3a side through the envelope-shaped (ladder-shaped) filters 9 arranged in the middle frame 3b.

As a suction means, a fan 11 is provided above the filter 9.
Is provided in the upper frame 3a, and the fan 11 is rotated by the fan motor 13 to suck the air containing dust through the filter 9. By sucking air, the dust filtered by the filter 9 adheres to the outside of the filter 9.

The upper portion of the plurality of envelope-shaped filters 9 is provided with a frame 15
Is fixed and erected vertically, and the frame body 15 is arranged in the middle frame 3b. A frame-shaped weight frame 17 is attached to the lower end of the suspended filter 9, and a small vibration device 19 is attached to the weight frame 17. The weight frame 17 has a function of preventing the lower end portion of each filter 9 from being sucked at the time of the suction action of the fan 11 and a function of maintaining a space between the filters 9. It is provided as a separate body that can vibrate with respect to the frame body 15.

By operating the vibration device 19, the weight frame 1
The filter 9 vibrates via 7 to separate the dust collected and adhered to the outer surface, and the dust collection box 2 provided in the lower frame 3c.
Drop into 1 and store. Since the dust collection box 21 is of a pull-out type, when an appropriate amount of dust is stored, it is taken out and discarded.

The clean air sucked by the fan 11 passes through the silencer 23, passes through the muffler box 25 provided on the upper portion of the upper frame 3a, and is discharged from the exhaust gallery 27 to the atmosphere side.

Incidentally, reference numeral 29 is a peephole for viewing the rotation direction of the fan 11, and reference numeral 31 is a breaker box of the fan motor 13.

Next, the vibration device 19 will be described in more detail.

Referring to FIG. 1 and FIG. 2, the vibration device 19 has a main body part which is a general small propeller fan motor 33.
Is adopted for compactness. Since the propeller fan motor 33 has a generally known structure, detailed description thereof will be omitted.

The general propeller fan motor 33 does not generate a large vibration even when it is rotationally driven, and does not have a dust-proof structure, so that it is difficult to employ it as a vibrating device of a dust collecting device as it is. Therefore, in the present embodiment, the following improvements are added. In the propeller fan motor 33, a plurality of blades 37 are radially provided so as to project from the rotation drive unit 35. A weight 39 was attached to at least one of the blades 37. Further, the dustproof lid 41 is attached to the propeller fan motor 3
Both sides of 3 are fixed and covered with screws 43 or the like. One side of the lid 41 has a frame 1 provided at the lower end of the filter 9.
7 (partially not shown) is fixed by bolts 45 or the like.

With the above-described configuration, the effect is that the weight 39 provided on the blades 37 causes the balance to be lost during rotation, causing large vibration. The vibration is transmitted to the weight frame 17, and each filter 9 is vibrated via the weight frame 17 to separate the dust attached to the outer surface of the filter 9.

The dust separated from the filter 9 and dropped falls into the dust collecting box 21, so that the dust can be easily removed by pulling out the dust collecting box 21.

Further, the vibration device 19 is provided in the air passage containing dust from the suction port 5 to the portion of the filter 9, but the propeller fan motor 33 itself is hermetically closed by the lids 41 fixed to both side surfaces. Since there is no inflow of dust, the dustproof effect can be improved with a simple structure.

Further, the propeller fan motor 33 that generates vibration is
Since it is provided in the air flow passage, it can be cooled and the performance of the motor can be prevented from being degraded.

As described above, the vibrating device 19 can be downsized, and by incorporating the vibrating device 19 inside the dust collecting device 1, the entire device can be made compact and the cost can be reduced.

Further, the frame 3 includes upper, middle, and lower frames 3a, 3
Since it can be disassembled into b and 3c, for example, when the filter 9 is damaged, the frame 3 can be disassembled and the filter 9 can be easily replaced.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes. For example, as a configuration that generates vibration, without attaching a weight to the blade,
A part of the blade may be missing.

[Effects of the Invention] As can be understood from the above description of the embodiments, in short, the present invention can disassemble the upper, middle, and lower frames 3
The lower frame 3c of the frame 3 formed by integrally assembling a, 3b, and 3c is provided with the suction port 5 and the dust collection box 21 that can be pulled out, and sucks air containing dust from the suction port 5. A suction fan 11 for rotatably provided in the upper frame 3a of the frame 3 and a filter 9 for filtering the air sucked from the suction port 5 provided in the middle frame 3b of the frame 3; The weight frame 17 attached to the lower part of the filter 9 is provided with a propeller fan motor 33 having dust-proof lids 41 attached to both side surfaces, and a weight 39 is attached to a part of the blade 37 of the propeller fan motor 33. In addition to being provided, the propeller fan motor 33 is arranged in the air flow passage.

That is, according to the present invention, since the frame 3 can be disassembled into the upper, middle, and lower frames 3a, 3b, 3c, for example, if the filter 9 is damaged, it can be easily replaced. Is something that can be done.

In addition, dust dropped from the filter 9 is collected in the dust collection box 2
1, the dust can be easily removed by pulling out the dust collection box 21.

Further, the weight 3 is attached to a part of the blade 37 of the propeller fan motor 33 as a vibrating device for vibrating the filter 9.
9 is provided, the vibration device can be downsized, and the overall structure can be downsized.

Further, the propeller fan motor 33 has a dust-proof lid 41.
Since both side surfaces are closed by the above-mentioned structure and are arranged in the air flow passage, dust does not enter the propeller fan motor 33 and the propeller fan motor 33 is cooled by the air. The life can be extended.

[Brief description of drawings]

1 and 2 show a vibrating device which is a main part of the present invention. FIG. 1 is a side view and FIG. 2 is a II- in FIG.
It is a sectional view taken along the line II. FIG. 3 is a front view of a dust collector according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Dust collector, 3 ... Frame, 5 ... Suction port 9 ... Filter, 11 ... Juan 17 ... Weight frame, 19 ... Vibration device 21 ... Dust collection box 33 ... Propeller fan motor, 37 ... Blade 39 ... Weight, 41 …lid

Claims (1)

[Scope of utility model registration request] 1. Disassembling upper, middle, and lower frames (3
a, 3b, 3c) are integrally assembled, and the lower frame (3c) of the frame (3) is provided with the suction port (5) and can be drawn out freely.
1) is provided, and a suction fan (11) for sucking air containing dust from the suction port (5) is rotatably provided in the upper frame (3a) of the frame (3). A filter (9) for filtering air sucked from the mouth (5) is provided in the middle frame (3b) of the frame (3), and a weight frame (17) is attached to the lower part of the filter (9). ) With a dustproof lid (41) attached to both sides of the propeller fan motor (3
3) is installed and installed, and this propeller fan motor (3
A dust collector characterized in that a weight (39) is provided on a part of the blade (37) in 3), and the propeller fan motor (33) is arranged in the air flow passage.