Biological safety cabinet with function of heat exchange

Abstract

The invention relates to a biological safety cabinet with a function of heat exchange. The biological safety cabinet comprises a cabinet body, an operation chamber and an efficient filtering heat exchange unit. The cabinet body is provided with an air supply filter and an exhaust filter and communicated with the operation chamber through the air supply filter, and a circulating fan is arranged in the cabinet body. The efficient filtering heat exchange unit comprises a heat exchange tank, a fresh air tank and an efficient air supply tank, and the heat exchange tank consists of a heat exchange filter element and four buffer boxes in hermetical connection with four ventilation faces of the heat exchange filter element. The biological safety cabinet has the advantages that air cleanliness of the operation chamber is guaranteed, and harmful aerosol is prevented from overflowing from the operation chamber, so that health of operators is guaranteed; burdens of a laboratory air conditioning system can be effectively relieved, energy consumption is reduced, and service lives of parts are prolonged effectively; difficulty in design of a central air-conditioning ventilation system is lowered; various operating parameters of the biological safety cabinet can be regulated conveniently, and digital control and remote management of the biological safety cabinet can be realized beneficially.

Description

technical field [0001] The invention relates to a biological laboratory equipment, in particular to a biological safety cabinet with heat exchange function. Background technique [0002] Biological safety cabinets are used to protect the operator, the laboratory environment and experimental materials from exposure to the above-mentioned operations when operating infectious experimental materials such as primary cultures, bacterial strains, and diagnostic specimens. Designed for the possible generation of infectious aerosols and splashes. Biological safety cabinets can be divided into three categories: Class I, Class II and Class III to meet different biological research and epidemic prevention requirements. [0003] For example, a Class I biosafety cabinet protects workers and the environment without protecting samples. The air flow principle is the same as that of a laboratory fume hood, except that the exhaust port is equipped with a HEPA filter. The first-level biologic...

AI Technical Summary

Problems solved by technology

The safety of the biological safety cabinet mainly depends on the negative pressure in the cabinet. The biological safety cabinet continuously discharges the gas in the cabinet, and then absorbs the indoor air through the front window to replenish it, thereby forming a relatively negative pressure state; and the space where the biological safety cabinet is placed Most of them have high requirements on temperature, humidity, cleanliness, etc., and a large amount of indoor air is discharged, which means a huge waste of energy

[0005] Although in some large-scale projects, a full heat exchanger is added to the central exhaust system, the number of biological safety cabinets will vary with different projects, and the exhaust air volume of a single biological safety cabinet will also vary depending on the safety level and use status. The number of biological safety cabinets in the same project will also cause changes in the exhaust air volume due to the number of working biological safety cabinets, which increases the difficulty of design and control of the central heat exchange system. At the same time, for places that use biological safety cabinets independently , configuring the heat exchanger in the air conditioning system will make the system very complicated

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