Outer rotor fan type fully ventilating biology safety cabinet

Abstract

The invention relates to an outer rotor fan-typed whole wind discharge biological safe cabinet. The invention comprises an upper cabinet part, a purifying working area, an operating table area, a bracket area and an appliance controlling part; the upper cabinet part is arranged on the bracket; the upper and front part of the upper cabinet is the purifying working area and the lower part is the operating table area; the appliance controlling part is positioned in the upper cabinet part and the purifying working area part; the upper and back part of the upper cabinet is provided with a subpressure bag; the wind sending high efficiency filter and the wind discharging filter all adopt the double surface tightening sealing; the middle naked part is positioned in a subpressure area and a zero pressure area to ensure that the purifying working area has no leaking pollution and that the polluted air does not be discharged out of the machine. The invention adopts the filter tightening buckle device, the front and back sealing covers and the high efficient filter support structure, therefore the invention not only has the airproofness of the whole machine and the stably operation, but also brings convenience and safety to the exchange of the high efficient wind discharge filter.

Description

technical field [0001] The invention belongs to the field of purification equipment, and relates to an outer rotor fan-type full-exhaust biological safety cabinet for biological experiment operations. Background technique [0002] In the existing biological safety cabinets, the fans of the core part use traditional centrifugal fans, so that the whole structure must be designed around its cumbersome shape. 2. Due to the limitation of large shape and easy vibration, it is not easy to solve the problem of filter sealing structure, and often cannot guarantee strict sealing performance. Small leakage will directly enter the clean working area of ​​the biological safety cabinet, which will affect the cleanliness; 3. Restricted by the structure, it is inconvenient to replace the high-efficiency filter; 4. The operation of the centrifugal fan is unstable and the service life is short; 5. Due to the limitation of the shape, it is difficult to form a negative pressure around the perip...

AI Technical Summary

Problems solved by technology

[0002] In the existing biological safety cabinets, the fans of the core part use traditional centrifugal fans, so that the whole structure must be designed around its cumbersome shape. 2. Due to the limitation of large shape and easy vibration, it is not easy to solve the problem of filter sealing structure, and often cannot guarantee strict sealing performance. Small leakage will directly enter the clean working area of ​​the biological safety cabinet, which will affect the cleanliness; 3. Restricted by the structure, it is inconvenient to replace the high-efficiency filter; 4. The operation of the centrifugal fan is unstable and the service life is short; 5. Due to the limitation of the shape, it is difficult to form a negative pressure around the periphery of the operating area, and the polluted air is discharged outside the machine, causing damage to the machine. Pollution of the atmospheric environment; 6. The bracket is bulky, the height of the bracket itself is limited to adjust, and the pedals are generally not adjustable, which cannot meet the user's requirements for comfort and many other shortcomings

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