RU191701U1 - EXHAUST FOR DUST REMOVAL - Google Patents

Abstract

The proposed hood is built into the desktop. The hood is fixed under the table to the bottom of the countertop, directly above the filter unit in the countertop, a hole is cut for dust intake from the working area, which is blocked by a perforated plate, while the inlet is made in the form of a Relo triangle. 2 s.p. f-ly, 1 ill.

Description

The utility model relates to equipment for eliminating and cleaning contaminated air in the working area, which is created during the work of a manicurist, in particular for embedding directly in the countertop. The proposed utility model relates to equipment primarily intended for hairdressing salons, manicure salons and beauty salons.

State of the art

As the closest analogue of the claimed utility model adopted a technical solution known from patent document US 9114444 B1, 08.25.2015. Analysis of the known solution shows that it has several significant drawbacks.

In particular, referring to FIG. 1 of the prototype shows that it provides a hood, the inlet of which is formed in the countertop and has a rectangular shape. From FIG. 1 it can be seen that the inlet occupies a significant space of the countertop, which cannot be used to place the work tools of the master without the risk of them falling into the ventilation duct.

In addition, it is known from the prior art that the square or rectangular shape of the channel leads to the formation of dead angles through which the flow does not pass (see, for example, Technical Encyclopedia, edited by L.K. Martens, Volume 3, Moscow, Sovetskaya Encyclopedia ", 1928, p. 462), which leads to inefficiency in the use of energy, can lead to accumulation of dust in dead zones. In addition, the kinetic energy given to the flow by the fan is expended on the formation and separation of turbulent vortices in the corners of the rectangle (90 °). The shape of the flow most corresponds to a round shape (i.e., a figure of constant width).

Thus, the claimed utility model is aimed at overcoming these drawbacks of the prior art and can improve the efficiency of the dust removal procedure as a whole, as well as increase the efficiency of using the workspace of the countertop.

Utility Model Disclosure

The technical task of the utility model is to draw in dusty air, which is formed when the material is sawed off by a manicurist, an exhaust hood. This air enters the filtering unit of the hood, and when the air mixture passes through the unit, dust is separated, which settles and accumulates on the filters. And already purified air is discharged by the fan through the exhaust outlet, in the lower block, from the hood.

As noted above, the circular shape is most suitable for the flow shape. This shape also reduces the formation of turbulent vortices at the inlet. However, of the figures of constant width, the circle has the largest area, which does not improve the efficiency of using the workspace of the countertop.

The utility model is aimed at finding a compromise solution that allows for the simultaneous achievement of the above technical results in comparison with the selected prototype.

From the prior art it is known that of the figures of constant width the smallest area has the Rehlo triangle (see, for example, Rademacher G., Teplitz O., Numbers and figures. Experiments in mathematical thinking, Moscow, Fizmatgiz, 1962, pp. 195-211). Moreover, the angles at the vertices of the Relo triangle are 120 °, i.e. he is a smoother figure than the rectangle known from the prototype.

Thus, if the inlet of the ventilation channel in the countertop is made in the form of a Relo triangle, this will increase the efficiency of using the workspace of the countertop while reducing turbulence and increasing the efficiency of dust extraction.

Utility Model Implementation

To achieve the indicated technical results, the hood is conditionally divided into two blocks, the lower and upper parts made of ABS plastic. In the first block, the lower part of the hood, there is a centrifugal fan (for example, RadiCal, EBM - PAPST), fuses and connecting wires. There is a closed part of the lower block for the fan fuse, on the one hand, as well as an opening for the output of already cleaned air on the opposite side. The second block, the upper part of the hood, directly filtering part. Two types of filters are used, the first is a cross-over filter, an FM filter of class F5, and the second, second stage of cleaning the air mixture is a fine filter, it can be made of: paper, a mixture of tissue and paper, as well as a HEPA filter with a cleaning class from 10 to 14. A retractable and removable frame for filters is provided on one side. Along the perimeter of the upper part of the filter unit, holes are provided for attaching the hood to the countertop. Thus, through assembly operations, the components of the hood form a single structure, the inlet of which is the hole of the countertop in the form of a figure of constant width.

The proposed hood is built into the desktop. The hood is fixed under the table to the bottom of the countertop, directly above the filter unit in the countertop a hole is cut out (not shown) in the form of a triangle. Relo for collecting dust from the working area, which is blocked by a perforated plate.

The utility model is illustrated by the drawing attached to the description, which shows a General view of the hood to remove dust.

According to the drawing (Fig. 1), the hood for dust removal is conventionally divided into two blocks, the lower and upper parts made of ABS plastic. In the first block, the lower part of the hood, there is a centrifugal fan RadiCal (1), of the EBM company - PAPST, fuses and connecting wires. There is a closed part of the lower block for the fuse (3) of the fan, on the one hand, as well as an opening for the output of already cleaned air (4) on the opposite side. The second block, the upper part of the hood, directly filtering part (2). Two types of filters are used (5), the first is a re-filter, an FM filter of class F5, and the second, second stage of cleaning the air mixture is a fine filter, it can be made of: paper, a mixture of fabric and paper, as well as HEPA- filter with a cleaning class from 10 to 14. A retractable and removable frame for filters (6) is provided on one side. Along the perimeter of the upper part of the filtering unit, holes are provided for attaching the hood to the countertop (7).

Dusty air i.e. the dust that is formed when the material is cut off by a manicurist is drawn in by the hood and gets on the filtering block of the hood. During the passage of the air mixture through this block, dust is separated, it settles and accumulates on the filters, and the cleaned air is discharged by the fan through the outlet in the lower block. In this case, the internal air channel, the filtering unit, and the outlet can be selected in any shape, because their shape does not significantly affect the removal of dust from the surface of the countertop, while the proposed shape of the inlet is essential to achieve the above technical results. In addition, the use of openings in the form of a figure of constant width with the smallest area (Relo triangle) in comparison with the prototype obviously allows you to increase the force of absorption of air into the hole.

Claims (3)

1. An extractor hood including an inlet opening blocked by a perforated plate in the countertop, a filter unit with a fan and an outlet opening, characterized in that the inlet opening is in the form of a Relo triangle. 2. The hood according to claim 1, characterized in that the filters in the filtering unit are removable. 3. Hood according to any one of paragraphs. 1 or 2, characterized in that the inlet is made in the countertop of the table for manicure.

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