Negative-pressure sterile laminar flow transfer vehicle

Abstract

The invention discloses a negative-pressure sterile laminar flow transfer vehicle. A power supply box is arranged on the main box; a working cavity is formed in the middle lower part in the main box;a gap is formed between the outer wall of the working cavity and the inner wall of the main box to form an air return channel; an air outlet is formed in the lower part of the working cavity; an air inlet is formed in the upper part of the working cavity; a uniform flow pore plate and an efficient filter are sequentially installed on the upper part of the air inlet from bottom to top; and an air outlet is formed in the lower part of the efficient filter, an air inlet in the upper part of the efficient filter is connected with an air outlet in the lower part of a FFU fan, and an air inlet is formed in the upper part of the FFU fan and communicates with the air return channel. The working cavity is formed in the main box, the gap is formed between the working cavity and the main box to formthe air return channel, so that air flow in the working cavity forms negative pressure circulation, air in the main box cannot leak out through the gap, and damage to the environment or workers is avoided.

Description

technical field [0001] The invention relates to a laminar flow transfer vehicle mainly used in pharmaceutical places, in particular to a negative pressure aseptic laminar flow transfer vehicle. Background technique [0002] The laminar flow transfer vehicle is a kind of local purification equipment mainly used in pharmaceutical places. It carries a built-in power supply, is movable, provides a local high-cleanliness working environment, and has strong versatility; the laminar flow transfer vehicle can provide vertical one-way airflow, gas The high-efficiency filtration of the primary and middle schools plays a self-purification role; the laminar flow transfer vehicle always maintains a fixed airflow after it is turned on to prevent cross-contamination and ensure a clean environment in the work area. [0003] The new version of GMP puts forward extremely strict implementation requirements for the transfer of sterile materials, requiring the implementation of "isolation techno...

AI Technical Summary

Problems solved by technology

[0005] The working principle of the traditional laminar flow transfer vehicle is: after the air is purified by the high-efficiency filter fan unit, it flows from top to bottom, flows through the work platform, purifies and protects the medicine, and forms air protection between the workbench and the vertical curtain (or tempered glass) surface, so that a positive pressure difference is formed inside and outside the laminar flow car to prevent the air in the low-level area outside from polluting the high-level area inside the laminar flow car. The leak of polluted gas to the outside world is a dangerous point that may cause harm to the environment or staff; in addition, the sealing effect between the high-efficiency air filter and the box frame of the traditional laminar flow transfer vehicle is not ideal, resulting in Harmful virus particles in the air may enter the lower working chamber through the gap, reducing the cleanliness of the working chamber

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