RU137926U1 - ISOLATED CLEAN ROOM - Google Patents

Abstract

An isolated clean room containing enclosing structures, a supply and exhaust ventilation system with fine filters, a gray (served) area, a perforated floor, collapsible enclosing structures, a transitional vestibule with insulated doors, a clean area, a perforated ceiling, a ceiling chamber, a shut-off and control air distributor , an overflow channel with a fine filter, characterized in that it further comprises air distributors for supplying air around the perimeter of the clean zone, laying on building envelopes of a clean room, and conical (funnel-shaped) devices for removing this air, attached to exhaust ducts and located along the perimeter of the clean zone in increments.

Description

The utility model relates to the field of ventilation and air conditioning of isolated cleanrooms in which technological operations are carried out with the release of harmful substances and dust, in particular when performing technological operations that require a high degree of dustiness of the air in the area where these operations are performed, in mechanical engineering, in the manufacture of electronic devices, etc. .d.

A technical solution for a clean room is known, containing an entrance vestibule for personnel, a raster aluminum enclosing structure for the clean zone, filtering modules, recirculating supply and exhaust air conditioning systems (Prospect of Deutsche Babcock, Germany. Flexible system of clean rooms).

This design of cleanrooms has several disadvantages:

- the ceiling chamber is under discharge and through the building envelope there is an infiltration of extraneous microflora;

- a relatively low degree of purification of filter-ventilation modules and filters from microorganisms and particulate matter;

- recirculation of ventilation air both inside the clean area and outside;

- heat input inside the clean area from the electric drives of the filter-ventilation modules.

A technical solution of an isolated cleanroom is known, containing enclosing structures of an isolated room, a supply and exhaust ventilation system with fine filters, a gray (service) zone, a perforated raised floor, collapsible enclosing structures, a transitional vestibule with sealed doors, a clean zone, a perforated ceiling, and a ceiling chamber , shut-off and control air distributor, transfer valve with fine filter (RF Patent RU №2017525 F24F 5/00, A61L 9/00. Prototype).

The disadvantage is that a sufficiently high degree of purity of the air is not ensured in a clean working area, since heat is generated during technological operations, which creates conditions at low flow rates of the supply air flow of the appearance of transverse (horizontal) flows, while harmful substances are released and dust can settle on the walls of an isolated room.

The objective of the proposed utility model is the ability to increase the degree of air purity in an isolated clean room and to eliminate the temperature increase on the inner surfaces of the isolated increase.

The technical result is achieved by the fact that the room, including the enclosing structures, the supply and exhaust ventilation system with fine filters, a gray (served) area, a perforated raised floor, collapsible enclosing structures, a transitional vestibule with insulated doors, a clean area, a perforated ceiling, a ceiling chamber, shut-off and control air distributor, overflow channel with fine filter, characterized in that it additionally contains air distributors for supplying air around the perimeter of the clean zone, laying on the enclosing structures of a clean room and a conical (funnel) shape device for removing this air, attached to the exhaust channels and located along the perimeter of the clean zone in increments.

The drawing shows a ventilation scheme of an isolated clean room containing the enclosing structures 1 of the existing room, the supply ventilation system 2 and exhaust ventilation 3 with fine filters 4, the gray (serving) zone 5, the perforated raised floor 6, collapsible enclosing structures 7, the transitional vestibule 8 s sealed doors 9, clean area 10, perforated ceiling 11, ceiling chamber 12, shut-off and control air distributor 13, transfer channel 14 with fine filter 15, air distributors 16 d I create flooring jet on walling isolated cleanroom, device 17 tapered (funnel-shaped) form to remove air lay on walling.

Exhaust ventilation 3 creates a vacuum in the gray zone 5 around the clean zone 10, while removing air from the clean zone through the perforated floor 6 and the air laid on the enclosing structures of the isolated room is removed through the device 17; sterile air enters the clean zone through the perforated ceiling 11 from the ceiling chamber 12. Due to the fact that the perforated ceiling 11 and raised floor 6 have a calculated value of resistance to air flow, during operation of the room 2 and 3 exhaust ventilation systems serving this room in the ceiling chamber 12 is supported excess pressure sufficient to form a laminar flow in the clean zone 10 and blocking the flow of untreated air from the surrounding atmosphere into the chamber 12. In addition, the specified tance raised floor air flow helps maintain the clean zone 10, an overpressure with respect to the gray zone 5; the vacuum maintained in the gray zone 5 by the exhaust ventilation system 3 does not allow the process air to be removed from the enclosing structures 1 to be removed from the clean zone. The locking regulating air distributor 13 performs the functions of: an air distributor that ensures uniform distribution of air throughout the volume of the ceiling chamber 12, a pressure stabilizer in the ceiling chamber 12; check valve in case of emergency in the supply 2 and exhaust ventilation systems 3. To create an air barrier that prevents the process air from leaving the clean zone 10, which is transitional to the vestibule 8 through the leaks of the door 9, a transfer channel 14 with a filter 15 is provided connecting the cavity of the transitional vestibule 8 s supply air duct 2.

Effect: ensuring a sufficiently high degree of purity of the air and eliminating the temperature increase on the internal surfaces in a clean isolated room, by removing dust from the enclosing structures of the clean zone by supplying a layering air stream to the enclosing structures of the clean zone and removing this air through funnel-shaped devices connected to exhaust system and located around the perimeter of the clean zone in increments.

Claims (1)

An isolated clean room containing enclosing structures, a supply and exhaust ventilation system with fine filters, a gray (served) area, a perforated floor, collapsible enclosing structures, a transitional vestibule with insulated doors, a clean area, a perforated ceiling, a ceiling chamber, a shut-off and control air distributor , an overflow channel with a fine filter, characterized in that it further comprises air distributors for supplying air around the perimeter of the clean zone, laying on building envelopes of a clean room, and conical (funnel-shaped) devices for removing this air, attached to exhaust ducts and located along the perimeter of the clean zone in increments.

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