RU32712U1 - Fume hood - Google Patents

Abstract

1. An exhaust hood, including a base with a worktop and a working chamber placed on it, placed in the housing, wherein an opening is made in the front wall of the working chamber, and a ventilation pipe is located on the upper part of the working chamber, characterized in that the base is made in the form of at least one cabinet, in the back wall of which at least one through hole is made, connected by means of a pipe to the ventilation duct. 2. A fume hood according to claim 1, characterized in that the ventilation duct is connected to the ventilation pipe of the working chamber by means of an adapter made in the form of a pipe with side outlets. A fume hood according to claim 2, characterized in that the ventilation duct is located outside on the rear wall of the housing. A fume hood according to claims 1 to 3, characterized in that the hole in the cabinet is located in the middle of the rear wall. 5. A fume hood according to claim 4, characterized in that the cabinet is divided horizontally into two equal parts by a shelf. A fume hood according to claim 4, characterized in that the base is made in the form of two identical pedestals.

Description

EXPLOSION CABINET

The utility model relates to ventilation technology, namely, devices designed to remove harmful substances directly from the place of their formation, and can be used when working with chemical reagents in laboratory conditions.

A fume hood is known (see certificate of the Russian Federation No. 25177 for a utility model published on 09/20/2002) containing a base with a worktop and a working chamber placed on it, placed in a housing; an opening is made in the front wall of the working chamber, and a ventilation pipe is located on the upper part of the working chamber. The base is made in the form of a desktop; the width of the countertop is greater than the depth of the working chamber; an opening is made in the front wall of the working chamber, closed by a movable frame with a transparent insert, and inside the chamber there is a screen installed with a gap relative to the countertop and

IPC: V08V 15/02

the top of the working chamber and made with the possibility of changing the values of these gaps.

This technical solution is selected as a prototype of this utility model.

The disadvantage of this technical solution is the fact that the cabinet design does not provide additional ventilated compartments, as a result of which the chemicals needed for operation are stored in an open room, polluting the laboratory room.

This utility model is aimed at solving the problem of creating a technological, simple in design, easily retrofitted hood with an additional compartment for storing chemical reagents, which can be easily converted from ventilated to non-ventilated and vice versa.

According to the utility model, the problem is solved due to the fact that the base is made in the exhaust hood, including a base with a countertop and a working chamber placed on it, placed in a housing with an opening made in the front wall of the working chamber and located on the upper part of the working chamber, in the form of at least one curbstone, in the back wall of which at least one through

an opening connected by means of a pipe with a ventilation duct; with the ventilation pipe of the working chamber, the ventilation channel can be connected via an adapter made in the form of a pipe with side outlets; the ventilation duct may be located externally on the rear wall of the housing; the hole in the cabinet can be located in the middle of the back wall; the pedestal can be divided horizontally into two equal parts by a shelf; the base can be made in the form of two identical pedestals.

The applicant has not identified any technical solutions that have the same set of features as the claimed solution. This, according to the applicant, allows us to conclude that the claimed object meets the criterion of "novelty.

The proposed utility model is illustrated by drawings, which depict:

in FIG. 1 is a general view of a fume hood in a perspective view,

figure 2 - fume hood, rear view,

in Fig.Z - exhaust hood, front view,

figure 4 is an adapter, a view in a perspective view.

A fume hood contains a base 1 with a countertop 2, on which a working chamber 3 is mounted, mounted in a metal housing 4. The countertop 2 and chamber 3 are made of plastic. In front

a wall of the chamber 3 is provided with an opening (not indicated by a separate position), closed by a frame 5 with tempered glass (not indicated by a separate position), mounted for movement along plastic guides 6. A screen 8 made with the possibility of vertical movement is mounted on the rear wall 7 of the chamber 3. An exhaust channel is formed between the screen 8 and the rear wall 7 of the chamber 3 (not denoted by a separate position), connected to the exhaust pipe 10, combined with the working chamber 3 and connected to the ventilation system (not shown in the drawing).

The base 1 of the exhaust hood is made in the form of two identical pedestals 11; in the middle of the rear wall of the cabinet 11, a through hole 12 is made, connected to by means of a pipe 13 with a ventilation channel 14 located outside on the rear wall of the housing 4; the ventilation channel 14 is connected to the exhaust pipe 10 of the working chamber 3 by means of an adapter 15, made in the form of a pipe 16 with side branches 17. The cabinet 11 is divided horizontally into two equal parts by a shelf 18.

The hood works as follows.

Chemical reagents are stored in the cabinet 11. If necessary, the exhaust pipe 13 of the cabinet 11 is connected to the ventilation duct 14, connecting it to the ventilation system. Due to connection

exhaust pipe 13 to the ventilation system in the cabinet 11 creates a vacuum of air, as a result of which harmful substances enter the exhaust duct.

Through a raised frame 5 with glass, harmful substances, for example chemicals, are placed on the countertop 2 of the base 1. By connecting the exhaust pipe 10 to the ventilation system, air discharge is created in the working chamber 3, as a result of which harmful substances enter the exhaust duct formed by the rear wall 7 of the chamber 3 and the screen 8, from where they are removed through the exhaust pipe 10.

The pipe 13 can be easily disconnected from the ventilation duct 14, as a result of which the cabinet 11 can be used as an unventilated compartment for storing reagents.

The execution of the pedestals is the same and the location of the holes in the middle of the rear wall of the pedestal provides interchangeability of the pedestals, as a result the manufacturability of the product is increased.

The proposed utility model can be implemented using conventional, well-known materials and devices, which, according to the applicant, indicates the compliance of the claimed object with the criterion of "industrial applicability.

Claims (6)

1. An exhaust hood, including a base with a worktop and a working chamber placed on it, placed in the housing, wherein an opening is made in the front wall of the working chamber, and a ventilation pipe is located on the upper part of the working chamber, characterized in that the base is made in the form of at least one cabinet, in the back wall of which at least one through hole is made, connected by means of a pipe with a ventilation duct. 2. The hood according to claim 1, characterized in that the ventilation duct is connected to the ventilation pipe of the working chamber by means of an adapter made in the form of a pipe with side outlets. 3. An exhaust hood according to claim 2, characterized in that the ventilation duct is located externally on the rear wall of the housing. 4. A fume hood according to claims 1 to 3, characterized in that the hole in the cabinet is located in the middle of the rear wall. 5. A fume hood according to claim 4, characterized in that the cabinet is divided horizontally into two equal parts by a shelf. 6. A fume hood according to claim 4, characterized in that the base is made in the form of two identical curbstones.