Variable air volume adjusting device for full-automatic biological safety cabinet
A biological safety cabinet and regulating device technology, applied in the field of biological experimental equipment, can solve the problems of large pressure fluctuations, complex air volume adjustment, and affecting the biological environment of the safety cabinet, etc., to achieve small pressure difference changes, small pressure fluctuations, and smooth and gentle airflow Effect
Active Publication Date: 2022-08-02
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology
However, it needs to take air from the laboratory and then remove it from the laboratory. The process of opening and closing the air intake device has great fluctuations in the indoor pressure of the biosafety laboratory. environment, there is a biosafety risk
In addition, the air extracted from the outside may have a different temperature from the constant temperature inside the safety cabinet, which requires further constant temperature inside the safety cabinet, which may also affect the biological environment in the safety cabinet
Method used
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Embodiment Construction
[0027] see figure 1 , In the embodiment of the present invention, a variable air volume adjustment device for an automatic biological safety cabinet includes a safety cabinet 1, wherein the safety cabinet 1 is an openable and airtight box body, and the upper center of the safety cabinet 1 is provided with Through the air supply cavity 2 inside, the air supply cavity 2 is provided with a guide fan 21;
[0028] Above the air supply chamber 2 is an air storage chamber 3, and a plurality of air storage assemblies 4 are arranged in the air storage chamber 3, and each of the air storage assemblies 4 is connected to an external air compressor through a multi-way valve;
[0029] The air supply cavity 2 is provided with a conical air inlet cone 7, and an inverted truncated guide column 5 is fixed under the air inlet cone 7, and the guide column 5 is fixedly connected with the safety cabinet 1, and all the An air volume adjustment assembly 6 is sleeved on the outer wall above the guide...
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The invention discloses a full-automatic biological safety cabinet variable air volume adjusting device which comprises a safety cabinet, the safety cabinet is a box body which can be opened and closed, an air supply cavity penetrating through the interior of the safety cabinet is formed in the center of the upper portion of the safety cabinet, and a flow guide fan is arranged in the air supply cavity; an air storage cavity is formed above the air supply cavity, a plurality of air storage assemblies are arranged in the air storage cavity, each air storage assembly is connected into an external air compressor through a multi-way valve, a conical air inlet cone is arranged in the air supply cavity, an inverted-circular-truncated-cone-shaped flow guide column is fixed to the lower portion of the air inlet cone, and the flow guide column is fixedly connected with a safety cabinet. The outer wall of the upper portion of the flow guide column is sleeved with an air volume adjusting assembly, and the air volume adjusting assembly is connected with the top of the safety cabinet. Compared with the prior art, the safety cabinet is constant in temperature, smooth and mild in airflow, small in pressure difference change and small in pressure fluctuation when the air inlet amount in the safety cabinet is adjusted, and the biological environment in the safety cabinet is prevented from being affected by airflow temperature difference and pressure difference.
Description
technical field [0001] The invention relates to the technical field of biological experiment equipment, in particular to a variable air volume adjusting device for an automatic biological safety cabinet. Background technique [0002] The biological safety cabinet is a box-type air purification negative pressure safety device that can prevent some dangerous or unknown biological particles from escaping aerosols during the experimental operation. It is widely used in scientific research, teaching, clinical inspection and production in the fields of microbiology, biomedicine, genetic engineering, biological products, etc. It is the most basic safety protection equipment in the first-level protective barrier of laboratory biosafety. [0003] The working principle of the biological safety cabinet is mainly to suck the air in the cabinet to the outside, so that the cabinet maintains a negative pressure state, and protects the staff through vertical airflow; the outside air is filt...
Claims
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IPC IPC(8): B01L7/02B01L1/00
CPCB01L7/02B01L1/00Y02B30/70
Inventor 刘志坚王永鑫吕嘉彬张正马俊涛姚广鹏武闽楠何峻州
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)