SU951017A1

SU951017A1 - Chamber for carrying out manufacturing operations in high-pure atmosphere conditions

Info

Publication number: SU951017A1
Application number: SU803007188A
Authority: SU
Inventors: Михаил Иосифович Фрид
Original assignee: Предприятие П/Я М-5273
Priority date: 1980-11-19
Filing date: 1980-11-19
Publication date: 1982-08-15

Description

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Изобретение относитс к вентил ции и представл ет собой камеру дл проведени технологических операций в услови х высокой чистоты атмосферы.The invention relates to ventilation and is a chamber for carrying out technological operations in conditions of high purity of the atmosphere.

Известна камера дл проведени технологических операвдй в услови х высокой чистоты атмосферы, содержаща корпус, к верхней части которого подсоединен воздуховод, а к нижней - выт жной, и установленный в корпусе рабочий стол со столешницей и боковыми стенками, ограничивающих его внутренний объем 1.A known chamber for carrying out technological equipment in conditions of high purity of the atmosphere, comprising a housing, to the upper part of which an air duct is connected, and to the lower part an exhaust air duct, and a working table mounted in the housing with a tabletop and side walls limiting its internal volume 1.

Недостатком данной камеры вл етс повышенна концентраци вредностей в зоне стола за счет образовани застойных зон и повышенной турбулентности воздуха над столешницей за счет отражени нисход щего воздушного потока.The disadvantage of this chamber is an increased concentration of hazards in the table zone due to the formation of stagnant zones and increased air turbulence over the table top due to the reflection of the downward air flow.

Цель изобретени - снижение концентрации вредностей в зоне стола,The purpose of the invention is to reduce the concentration of hazard in the table area,

Поставленна цель достигаетс тем, что столешница и боковые стенки вьпголнены перфорированными , и камера снабжена дополнительным выт жным воздуховодом, подсоединенным к внутрегшему объему стола.The goal is achieved by the fact that the table top and side walls are perforated with perforation, and the chamber is equipped with an additional exhaust duct connected to the internal volume of the table.

На чертеже показана камера дл проведе1П5Я технологических операций в услови х высокой чистоты атмосферы, общий ввд.The drawing shows a chamber for conducting technological operations under conditions of high purity of the atmosphere.

Камера содержит корпус 1, к верхней части которого подсоединен приточный воздуховод 2, а к нижней - выт жной воздуховод 3, и установленный в корпусе 1 рабочий стол 4 со столешницей 5 и боковыми стенкалт 6, офаничивагощих внутренний объем 7 стола 4, причем столешница 5 и боковые стенки 6 вь полнены перфорированными с отверсти ми 8.The chamber contains a housing 1, to the upper part of which a supply air duct 2 is connected, and to the lower part - an exhaust air duct 3, and a working table 4 installed in the housing 1 with a table top 5 and side walls 6 of which the internal volume 7 of the table 4 is 4, and a table top 5 and the side walls 6 are perforated with holes 8.

Кроме того, камера снабжена дополнительным выт жным воздуховодом 9, подсоединенным к внутреннему объему 7 стола 4.In addition, the chamber is equipped with an additional exhaust duct 9 connected to the internal volume 7 of the table 4.

В приточном воздуховоде 2 установлены вентил тор 10 и фильтр 11 грубой очистки, а в выт жном воздуховоде 3 - выт жной вентил тор 12.In the intake duct 2, a fan 10 and a coarse filter 11 are installed, and in the exhaust duct 3 - an exhaust fan 12.

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Claims

The additional air duct 9 also has a fan 13 and a regulator 14. In the case 1, a fine filter 15 and a perforated floor 1 are installed. 16. 3 l The ratio of the area of perforated holes 8 to the total area of the table top 5 and b of the wall 6 must be at least 1: 6, and the table top 5 can have a different design, in the form of a set of mutually perpendicular spokes or a tight metal mesh fixed to the frame. The camera works as follows. The intake air enters from the air duct 2 through the fine filter 15 into the housing 1 is removed through the field 16 into the exhaust duct 3. This creates vertical air flow, which when entering H1N on the table 5 penetrates into the internal volume 7 of the table 4, from where it is removed exhaust duct 9. At the same time, in the zone of stol 4, turbulence of air flows is eliminated and a quasilaminar flow of the latter is formed. The most optimal mode of operation is when the air velocity in the area of the tabletop 5 is equal to or slightly greater than the air flow rate supplied through the supply air duct 2. The use of this chamber allows to reduce the concentration of hazard in the Desktop Zone, i.e. in the place where the purity of the atmosphere is of the greatest value, thereby increasing the yield of finished products. The formula invented is 1. A chamber for carrying out technological operations under conditions of high purity atmospheres1, comprising a casing, to the top of which is connected a supply air duct, and to the bottom - a connecting air duct, and installed in the case a working table with a table top and side walls that limit it to carbon volume, characterized in that, in order to reduce the concentration of harmful substances in the area of the table, the tabletop and the side walls are perforated.

2. Chamber device 1, characterized in that it is provided with an additional exhaust duct connected to the internal volume of the table. Sources of information taken into account during the examination 1. German patent 1G 2107269, cl. F 24 F 9/00, publ. 972.

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