JP2018176041A - Dust recovery machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve compactification of a device.SOLUTION: A dust recovery machine comprises: suction/ventilation means; a clean air blowing-out surface which blows out air fed from the suction/ventilation means to a dust-removing area as clean air; and a dust recovery surface which sucks air and dusts from the dust-removing area by the suction/ventilation means, in which air blown-out from the clean air blowing-out surface is recovered by the dust recovery surface and is circulated. In this machine, an area of the clean air blowing-out surface is so set as to be smaller than an area of the dust recovery surface.SELECTED DRAWING: Figure 1

Description

The present invention relates to a dust collection machine for collecting dust when cleaning a work or the like.

  As shown in FIG. 5, conventionally, a dust recovery machine C100 is provided in the booth BT for cleaning the work W, and the dust recovery machine C100 sucks the air A1 inside the booth BT by a fan C110 and filters it. While purifying with C120, the purified air A2 was supplied to the environment around the booth BT. The purified air A2 is introduced into the booth BT while circulating the environment around the booth BT, and contributes to the purification of the booth BT.

  In the booth BT, for example, the worker WR sprays the clean air A3 from the air blow AB on the work W to separate and remove the dust adhering to the surface, and the removed dust D together with the air A1 is collected by the dust collection machine C100 Do.

Even if dust on the work W is removed, there is a fatal problem that the worker WR or dust DO in the external environment intrude into the booth BT and adhere to the work W again.
Another version of the prior art is shown in FIG. In this method, an internal air circulation method is used to prevent inhalation of outside air including dust. The same reference numerals as in FIG. 5 denote the same or corresponding parts. Reference A4 indicates air to be circulated. In this case, the area of the dust collection surface C140 is equal to the area of the clean air outlet C130. The dust collection surface C140 has a large area in order to collect dust D scattered in four directions. Therefore, the clean air blowing surface C130 also becomes large as well as the whole apparatus, and is in trouble at the installation place.

  The present invention has been made to solve such conventional problems, and provides a dust recovery machine free from reattachment of dust contained in the open air. Another object of the present invention is to provide a smaller dust collecting machine.

  In order to achieve the above object, the dust recovery apparatus according to claim 1 comprises: suction / blowing means; and a clean air blowing surface for blowing out air supplied from the suction / blowing means as clean air to the dust removal area; A dust collection surface for suctioning air and dust from the dust removal area by the suction / blowing means, and the air blown out from the clean air blowing surface is collected on the dust collection surface for collecting the dust removed from the work; It is a dust collection | recovery machine which circulates, Comprising: The area of the said clean air blowing surface is set smaller than the area of a dust collection | recovery surface.

In the dust recovery apparatus according to the second aspect of the present invention, the clean air blowing surface and the dust recovery surface are disposed in a fan-like shape, whereby the dust removal area is defined in a fan-like shape.
This can widen the space of the dust removal area and improve the workability.
The spread angle of the clean air blowing surface and the dust collection surface is set to 60 degrees to 120 degrees.

In the dust collection machine according to claim 4, in the fan-shaped dust removal area, the air flow from the clean air blowing surface toward the dust collection surface is slower as it goes from the front to the back (closer to the back of the fan-shaped space) It is.
This makes the air flow laminar and prevents the inflow of contaminated air from the ambient environment into the dust removal area.

In the dust collection machine according to claim 5, the clean air blowing surface is provided in the clean air blowing unit, and the clean air blowing unit is provided with a filter for cleaning the air supplied from the suction / blowing means. A current plate disposed along the upstream surface of the filter, and the air supplied from the suction / blowing means wraps around in the outer peripheral direction (front side) of the fan-like space, and the upstream of the filter While flowing toward the back side of the fan-shaped space along the side surface, the static pressure at that time reduces the amount of air from the clean air blowing surface toward the dust collection surface as it approaches the back of the fan-shaped space. As a result, the air flow from the clean air blowing surface toward the dust collection surface becomes a laminar flow, and the inflow of contaminated air from the surrounding environment to the dust collection area can be prevented.

The dust collection machine according to claim 6, wherein the straightening vane is disposed parallel to the upstream surface of the filter, and dust is collected from the clean air blowing surface by the pressure loss of the flow around the straightening vane. The air flow toward the surface may be slower as it is closer to the back of the fan-shaped space.

In the dust collection machine according to claim 7, the straightening vane is disposed such that the distance between the straightening vane and the upstream surface of the filter decreases in the direction of the back of the fan-shaped space, and from the clean air blowing surface The reduction of the velocity of the air flow toward the dust collection surface toward the back of the fan-shaped space can be made more significant.

  According to the present invention, since the outside air is not inhaled, it is possible to realize a dust collection machine without dust reattachment. In addition, the entire device is made compact.

It is a block diagram showing Example 1 of a dust collection machine concerning the present invention. It is a block diagram showing Example 2 of a clean space maintenance device concerning the present invention. It is an expanded sectional view which shows the clean air blowing unit in FIG. It is an expanded sectional view which shows the modification of the clean air blowing unit of FIG. It is sectional drawing which shows the conventional dust collection | recovery machine. It is sectional drawing which shows another conventional dust collection | recovery machine.

Next, Example 1 of the dust collection machine according to the present invention will be described with reference to FIG.
Example 1

As shown in FIG. 1, the dust recovery apparatus 100 has a clean air blowing unit 150, a used air recovery unit 160, and an air suction / blower 170, and the air suction / blower 170 has a blower side piping 180 and a suction side piping 190. Are connected to the clean air blowing unit 150 and the used air recovery unit 160 respectively. The clean air blowing unit 150 is provided with a clean air blowing surface 130 for blowing clean air, and the used air recovery unit 160 is provided with a dust recovery surface 140 for recovering the dust D together with the used air. The air blowing unit 150 and the used air collecting unit 160 are arranged such that the clean air blowing surface 130 and the dust collecting surface 140 face each other.

A filter 125 is provided on the dust collection surface 140 of the used air collection unit 160, and purifies used air A1 for dust collection to be collected. On the other hand, the filter 120 is provided on the clean air blowing surface 130 of the clean air blowing unit 150, and the air A4 purified by the filter 125 is further purified to ensure the cleanliness of the air A2 blown out from the clean air blowing surface 130. .

  A space between the clean air blowing surface 130 and the dust collection surface 140 is a dust removal area CA, and an operation for the worker WR to remove the dust adhering to the work W is performed. In the figure, AG is an air gun used for dust removal work.

  The dust recovery machine 100 blows clean air pumped by the air suction / blower 170 from the clean air blowing surface 130, keeps the dust removal area CA clean by this clean air, and is used along with the dust removed by the air gun AG. The air is sucked and collected by the dust collection surface 140 and returned to the air suction and blower 170. The air A1 used for dust removal is negligibly small compared to the air A2 blown out from the clean air blowout surface 130, and most of the air is circulated and regenerated to realize an internal air circulation type system, It can prevent the inflow of polluted air from the surrounding environment and can prevent the air pollution of the surrounding environment.

The area of the clean air blowing surface 130 is set smaller than the area of the dust collection surface 140, and the clean air A2 spreads uniformly toward the dust collection surface 140 in the dust removal area CA, and polluted air from the surrounding environment It can prevent inflow.
And by setting the area of the clean air blowing surface 130 smaller than the area of the dust collection surface 140, the entire dust collection machine 100 can be made compact.

  Next, a second embodiment of the clean space maintaining device according to the present invention will be described with reference to FIGS. 2 and 3. In the figure, the same or corresponding parts as in the first embodiment are designated by the same reference numerals, and the description will be omitted.

As shown in FIG. 2, the clean air blowing surface 130 and the dust collection surface 140 in the dust collection machine 100 are fan-shapedly arranged toward the worker WR on the dust collection area CA, and the spread angle thereof Is set in the range of 60 degrees to 120 degrees.
Thus, by defining the dust collection area CA which spreads toward the worker WR, the frontage becomes wide and the workability becomes good.

  The boundary on the back side of the fan-shaped space of the dust collection area CA is divided by the partition wall 200 and goes out of the dust collection area CA of the used air A1 for air flow and dust removal from the clean air blowing surface 130 to the dust collection surface 140 Leakage and contamination air from the surrounding environment to the dust collection area CA are prevented. The partition wall 200 is coupled to the clean air blowing unit 150, the spent air recovery unit 160, and is supported by the units 150, 160.

  As shown in FIG. 3, in the clean air blowing unit 150, a buffer space 210 is provided on the upstream side of the filter 120, and a rectifying plate 220 for adjusting the flow rate of the air A4 is provided in the buffer space 210. There is. The flow straightening plate 220 extends in the radial direction from the back of the fan-like space while rising in the height direction of the dust collection area CA, and its outer peripheral end has a gap with the inner surface of the buffer space 210. The rectifying plate 220 extends substantially parallel to the upstream surface 120F of the filter 120.

The air A4 that has flowed into the buffer space 210 from the air-blowing pipe 180 is guided from the back of the fan-shaped space of the flow straightening plate 220 toward the front, and goes around the front end, along the filter 120 toward the back of the fan-shaped space Flow into the filter 120. Therefore, as the air A4 flowing along the straightening vane 220 in the direction toward the back of the fan-like space approaches the back of the fan-like space, the static pressure decreases due to the flow path resistance, and the air volume passing through the filter 120 decreases. As a result, the air volume of the air A2 passing through the filter 120 decreases from the near side toward the back of the fan-shaped space, and the air volume distribution of the air flow A2 from the clean air blowing surface 130 to the dust collection surface 140 Decrease towards the direction of the department.
Therefore, the air flow A2 becomes laminar and can prevent the inflow of contaminated air from the surrounding environment to the dust collection area CA.

  Next, a modification of the straightening vane of FIG. 3 will be described with reference to FIG. In the figure, the same or corresponding parts as in FIG.

As shown in FIG. 4, the rectifying plate 220 is inclined with respect to the filter 120, and the distance to the upstream surface 120 </ b> F of the filter 120 is narrowed toward the back of the fan-shaped space.
As a result, when air A4 having passed around the front end of the straightening vane 220 flows along the filter 120 in the direction of the deep part of the fan-shaped space, the reduction of the flow path cross-sectional area is remarkable as compared with the case of FIG. . For this reason, the flow path resistance to the air A4 increases in the direction of the back of the fan-shaped space, and the flow rate of the flow velocity of the air A2 decreases significantly toward the back of the fan-shaped space. The laminarization effect of A2 is remarkable.

DESCRIPTION OF SYMBOLS 100 Dust collection | recovery machine 120, 125 filter 120 F upstream surface 130 Clean air blowing surface 140 Dust collection surface 150 Clean air blowing unit 160 Used air collection unit 170 Air suction and blower 180 Air side piping 190 Suction side piping 200 Partition wall 210 Buffer Space 220 Current plate C100 Dust recovery machine C110 Fan C120 Filter C130 Clean air blowout surface C140 Dust recovery surface A1, A2, A3 Air AB Air blow AG air gun BT booth CA Dust removal area D, DO dust W Work WR Worker

Claims (7)

Air and dust are sucked from the dust removal area by the suction / blowing means, a clean air blowing surface which blows the air supplied from the suction / blowing means to the dust removal area as clean air, and the suction / blowing means A dust recovery surface, wherein air blown out from the clean air blowing surface is recovered and circulated on the dust recovery surface for recovering the dust removed from the work,
A dust collection machine characterized in that the area of the clean air blowing surface is set smaller than the area of the dust collection surface. The dust collection machine according to claim 1, wherein the clean air blowing surface and the dust collection surface are arranged to spread in a fan shape, whereby the dust removal area is defined in a fan shape. The dust collection machine according to claim 2, wherein the spread angle of the clean air blowing surface and the dust collecting surface is set to 60 degrees to 120 degrees. The dust collection machine according to claim 2 or 3, wherein in the fan-shaped dust removal area, the air flow from the clean air blowing surface toward the dust collection surface is slower as it is closer to the back of the fan-shaped space. The clean air blowing surface is provided to the clean air blowing unit, and the clean air blowing unit includes:
A filter for purifying the air supplied from the suction / blowing means;
A straightening vane disposed along the upstream surface of the filter, wherein the air supplied from the suction / blowing means wraps around in a direction toward the front of the fan-shaped space, and the air is supplied to the upstream surface of the filter. It is characterized in that, while flowing toward the back of the fan-shaped space, the amount of air from the clean air blowing surface to the dust collection surface is lowered closer to the back of the fan-shaped space due to a decrease in static pressure at that time. The dust recovery machine according to Item 4. The dust collector according to claim 5, wherein the straightening vanes are disposed parallel to the upstream surface of the filter. The dust collection machine according to claim 5, wherein the straightening vanes are disposed such that the distance between the straightening vanes and the upstream surface of the filter decreases in the direction of the back of the fan-shaped space.

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