RU44040U1 - CLEAN ROOM TECHNOLOGY UNIT - Google Patents

Abstract

The utility model relates to pharmaceutical, medical and microbiological technology. The supply purified air-conditioned air in the cleanroom unit is evenly distributed from the ceiling zone to the floor. Air is removed from the floor area of clean rooms through corner, column-shaped and near-wall exhaust panels through a sealed ceiling chamber with a recirculation fan. Part of the removed air is returned to the serviced (primary) clean room and mixed in it with purified air-conditioned outdoor supply air, its other part is directed to the adjacent (secondary) clean room and removed from it by an exhaust fan. Negative static pressure in the transition zone relative to the static pressure in the clean working area is maintained through a fine filter installed in the overflow hole of the partition between the ceiling chamber of the clean room and the transition zone. The supply air supplied to the clean rooms for the training of personnel flows into the auxiliary rooms, prompted by the static pressure of the supply air, through the ventilation valve - distributor. From the clean room of the air lock, the supply air flows into the auxiliary room through the vestibule room and the block of ventilation valves - distributors. Bibliographic data. 1. USSR Copyright Certificate No. 867411., Cl. In 01 L 1/04 1981 Boxing for work with especially clean rooms. 2. Krupchatnikov V. M. Ventilation when working with radioactive substances. M. Atomizdat, 1968. 3. Patent No. 20177525 RU Cl. B 01 L 1/04 F 24 F 5/00, A 61 L 9/00 1992. Isolated cleanrooms of a flexible technological system. 4. Patent No.2019935 RU Cl. F 2 and F 13/08, 1992. Ventilation valve-distributor. 5. Application for the grant of a patent of the Russian Federation for utility model No. 2004110145 Ceiling filter - camera. 2004 year

Description

The utility model relates to pharmaceutical medical and microbiological technology.

A well-known design of the box for working with highly pure substances, containing a horizontal rectangular housing of the working chamber, additional chambers with perforated side walls located on the front wall of the housing, to which the exhaust pipes are connected. [1]

The disadvantage of this design is that it does not completely solve the complex problem of the reliability of environmental protection from technological emissions and the cleanliness of the working area.

Another well-known technical solution is the design of rooms for working with radioactive substances, containing a zone of equipment, repair and transportation zone, operator area. [2]

The main disadvantage of this technical solution is the non-sterility of the process.

The closest in essence to the invention is an isolated cleanroom containing the enclosing structures of the existing building, a supply and exhaust ventilation system with fine filters, a gray (transitional) zone, a perforated raised floor, collapsible building structures, a transitional vestibule, a clean zone, a perforated suspended ceiling, and a ceiling chamber, locking regulating air distributor. [3]

This design of an isolated cleanroom has several disadvantages:

- the complexity of the design of cleanrooms (perforated raised floor, perforated suspended ceiling, ventilation duct system);

- the remoteness of the supply ventilation filter of fine cleaning from the clean zone;

- lack of exhaust ventilation system serving transitional vestibule;

- high energy costs for the operation of supply and exhaust ventilation systems;

- lack of reuse of cleanroom air;

- transportation of the entire volume of technological ventilation air from clean rooms in the cavity of the transition (gray) zone:

- the high cost of an air conditioner serving clean rooms, according to the required performance.

The essence of the invention is as follows.

Supply air is removed from cleanrooms through corner exhaust ventilation panels, which simultaneously act as corner fillets. The plane of the corner ventilation panel and the corner enclosing building collapsible structures form the cavity of the air duct of a triangular shape. The upper part of the cavity of the triangular duct of the exhaust ventilation corner panel communicates with the cavity of the sealed ceiling chamber. The lower part of the corner panels is equipped with adjustable air intake devices. Through the air intake devices, air from the lower floor area of the clean room through the triangular ducts of the exhaust corner panel is taken by the fan through the cavity of the sealed ceiling chamber. From the fan, after being processed in the closer, the air partially enters the serviced (primary) cleanroom through the ceiling filter chambers (hereinafter referred to as PFK). [5] and mixes in it with clean, air-conditioned outdoor supply air. Another part of it enters the neighboring (secondary), clean room through its ceiling filter chamber.

Air is also removed from the clean room through the near-column exhaust ventilation panels installed around the columns along their entire height, the upper cavity of the panel communicates with the sealed ceiling chamber of this room, and air intake adjustable devices are installed in the lower part of the near-exhaust exhaust panel. With large air exchange rates in clean rooms, air is removed from the floor area of clean rooms through hermetic exhaust ventilation columnar panels, evenly installed over the entire area of clean rooms. The upper part of the cavity of the column-shaped exhaust panels communicates with the sealed cavity of the ceiling chamber. In the lower part of the exhaust column-shaped panels, adjustable air intake devices are installed.

The external supply ventilation air enters the working area of cleanrooms based on the calculation of ensuring comfort and hygienic requirements of working conditions. The air exchange rate and sterility conditions are ensured by mixing the incoming fresh air-conditioned and recirculated air entering the working area of the clean room. The multiplicity of air exchange of such an air mixture can be more than 100 ^-1 .

To ensure guaranteed differential pressure between

the working clean zone and the transition zone, in order to protect the surrounding atmosphere from the possible process air outside the transition zone and to protect the clean room from contaminants, the negative pressure drop of the cavity pressure of the sealed ceiling chamber is transmitted to the transition zone through the fine filter installed in the overflow aperture of the partition between the sealed ceiling chamber and the transition zone of this cleanroom. To maintain the normative, static pressure of the supply air entering the clean room for staff training (second wardrobe) and transferring it to auxiliary rooms for further use in premises of a lower purity class, in the overflow hole of the partition between the cavity of the sealed ceiling chamber and the cavity of the auxiliary room, is installed ventilation valve-distributor (hereinafter referred to as WRC). [4]

To create simultaneously higher static pressure in the clean room of the air lock in relation to neighboring rooms and static pressure in the vestibule in relation to the transition zone, the cavity of the airtight ceiling chamber of the air lock communicates with auxiliary rooms through the vestibule and the SRS valves, one of which is installed in the overflow the opening of the partition between the cavity of the sealed ceiling chamber and the cavity of the vestibule, and the other in the transfer hole of the partition between the cavity of the vestibule and the cavity building room.

In Fig.1 shows a cross section AA of a General view (plan) of the technological unit of the cleanrooms of Fig.2. In Fig.2 shows a plan of a General view - section bB, Fig.1.

The technological unit of cleanrooms contains enclosing building structures of the existing premises 1; clean room for staff training (2nd wardrobe) 2; clean room of the air lock 3; (primary) cleanroom 4; auxiliary room 5; transitional (gray) zone 6; exhaust fan 7; fine filter of the removed process air 8; air conditioning system 9; throttling valves 10; ventilation distribution valves (WRC); eleven; closer 12; air ducts 13; folding walls 14; tight suspended ceilings 15; sealed ceiling chambers 16; ceiling filter chambers 17; exhaust ventilation corner panels 18; the cavity of the ducts of a triangular shape of the exhaust corner panel 19; adjustable air intake devices 20; recirculation fan 21; overflow

fine filter 22; column 23; exhaust ventilation near-face panel 24; neighboring (secondary) cleanroom 25; fine filter overflow port 26: WRC valve overflow port; 27 vestibule 28, exhaust ventilation columnar panel 29.

The principle of operation of the technological unit is as follows. The external supply air from the air conditioning system 9 is directed through the air ducts 13 to clean rooms 2, 3, 4, having passed the volumetric speed adjustment in the throttle valves 10. One part of it, after being finely cleaned and uniformly distributed in the ceiling filter chamber 17, enters the upper part of the working area of the primary cleanroom 4, while mixing with recirculated air coming from the recirculation fan 21, through the PFC.

The resulting mixture of clean ventilation air moving uniformly from top to bottom reaches the floor level of the clean working area, from where it is removed through adjustable air intake devices 20 along the triangular cavities 19, corner exhaust panels 18, as well as through the air intake devices 20 of the exhaust side panel 24, recirculation fan 21, communicating with them through the cavity of the sealed ceiling chamber 16. Then the mixture of air from the recirculation fan 21, after being processed in the closer 12, partially returns I primary cleanroom 4 where it is mixed with a new portion of fresh outdoor air. The remaining air mixture is sent by the fan 21 to the neighboring (secondary) cleanroom 25 through the ceiling filter chamber 17, from which it flows uniformly through the cavity of the working clean zone from top to bottom, through the air intake devices 20 through the exhaust angular 18 and columnar panels 29 through the sealed ceiling the chamber 16 is removed by the fan 7. The removed process air, if necessary, is further cleaned in fine filters 8.

One of the following parts of the supply air from the air conditioner 9 enters the ceiling filter chamber 17 of the clean room of the air lock 3, from where it flows downward evenly to the air intake devices 20, through which, by the static pressure of the supply air supplied to the gateway 3, it moves along the angular triangular ducts 19 panels 18 into a sealed ceiling chamber 16. Through the valve WRC 11, the supply air from the chamber 16

moves into the cavity of the vestibule 28, and from it through another valve, the WRC 11 enters the auxiliary room 5 for its further use as supply ventilation air.

The third part of the supply air from the air conditioner 9 enters the ceiling filter chamber 17 of the clean room for the training of personnel 2, passes through its entire volume from top to bottom, and through the air intake devices 20, through the triangular corner ducts 19 of the corner panels 18, it is moved by the static pressure of the supply air into the sealed cavity of the ceiling chamber 16, from which through the valve WRC 11 the supply air enters the auxiliary room 5 for its further use as supply ventilation air for General purpose communications.

Claims (6)

1. Technological block (TB) of cleanrooms, containing the building envelope of existing buildings, clean staff training room (second wardrobe), clean air lock room, clean workrooms, auxiliary rooms, transition (gray) area, exhaust ventilation system with fine filters cleaning, air conditioning system, throttling valves, vent valves, closers, air ducts, collapsible building envelope for clean rooms, including walls, suspended ceilings installed inside the building envelopes of the existing premises, ceiling chambers in clean rooms, ceiling filter chambers, characterized in that the air is removed from the clean rooms of the TB through its corner exhaust ventilation panels, which simultaneously serve as corner fillets of clean rooms TB, the plane of the corner exhaust panel and the corner building envelope collapsible structures of clean rooms TB form the cavity of the air duct of a triangular shape, The upper part of which communicates with the cavity of the hermetically sealed ceiling chamber of the primary clean working room of the TB, in its lower part, on the plane of the corner exhaust panel, adjustable air intake devices are installed, through which the air of the room removed from the lower (floor) zone, along the triangular cavities of the corner exhaust panels, taken by the fan of the recirculation system through the cavity of the sealed ceiling chamber of the primary clean working room of the TB, after which, after processing in finishing ke, it is distributed in two directions through the ceiling filter chambers, one part of it is sent back to the served primary clean working room of the TB and mixed in it with clean air-conditioned outdoor supply air, and the other part enters the secondary clean working room of the TB. 2. The technological unit of cleanrooms according to claim 1, characterized in that around the support column, to its entire height, inside the clean room of the TB, there is a gap exhaust ventilation panel installed with a gap, the upper cavity of which communicates with the cavity of the sealed ceiling chamber of this clean room of the TB, in its lower part air intake adjustable devices are installed. 3. The technological unit of cleanrooms according to claim 1, characterized in that in order to ensure a high air exchange rate and uniform distribution of air over the entire area of the clean room, the TB is carried out through sealed exhaust ventilation columnar panels uniformly installed over the entire area of this room, the upper part of the exhaust cavity the columnar panels communicate with the sealed cavity of the ceiling chamber; air intake devices are installed in the lower part of the columnar exhaust panels. 4. The technological unit of cleanrooms according to claim 1, characterized in that in order to maintain the normative difference in static pressure between the cavity of the cleanroom of the TB and the transition (gray) zone of the TB, the cavity of the sealed ceiling chamber of this clean room of the TB communicates with the transition zone of the TB through the transfer hole in the partition between them, blocked by a fine filter. 5. The technological unit of cleanrooms according to claim 1, characterized in that in the transfer aperture of the partition between the cavity of the hermetic ceiling chamber of the cleanroom of the TB and the auxiliary room, a ventilation valve-distributor is automatically installed that maintains the normative overpressure of the supply air entering the clean room of the TB and provides its flow into auxiliary rooms through a shut-off and adjustable device of the ventilation valve-distributor. 6. Technological unit of cleanrooms according to claim 1, characterized in that in order to create an increased excess pressure in a clean room of the air lock in relation to clean working rooms and a second wardrobe of TB and standard static pressure in the separation vestibule in relation to the transition zone, the supply air From the cavity of the sealed ceiling chamber of the clean room of the air lock, the TB enters the auxiliary rooms through the separation vestibule and the block of ventilation distribution valves, one of which getting into the overflow hole of the partition between the sealed chamber ceiling cleanroom airlock TB and location separation vestibule, the other in the hole of the overflow partition between the room vestibule and ancillary facilities.