Biosafety cabinet and clean air device

Patent metadata

Field	Value
Publication number	US-10874012-B2
Application number	US-201716325242-A
Country	US
Kind code	B2
Filing date	Apr 24, 2017
Priority date	Oct 19, 2016
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

The purpose of the present invention is to provide a clean air device that can reduce the risk of contamination due to static electricity. Provided is a biosafety cabinet or a clean air device that connects a biosafety cabinet and a clean booth, wherein a static eliminator (ionizer) that generates a corona discharge by way of concentrating an electric field on a needle-shaped discharge electrode and eliminates static with ionized air is disposed directly above an air flow branching point where air supplied to a work space branches to the front face and to rear face inside the biosafety cabinet.

First claim

The invention claimed is:

1. A biosafety cabinet comprising:
a work space formed on an inner surface side of a front shutter;
a circulation passage formed from a lower surface side, a lateral surface side and a rear surface side of the work space, and an outer part of the biosafety cabinet for discharging air having flown into the work space, and
an air supplier disposed on an upper surface of the work space for supplying air to the work space, characterized in that
an ionizer is provided right above an airflow branch point where the air supplied to the work space branches toward a front surface and a rear surface of the biosafety cabinet.

2. The biosafety cabinet according to claim 1 , characterized in that
a working table is disposed on a lower surface of the work space, and
the airflow branch point is a point where the air supplied to the work space branches toward the front surface and the rear surface of the biosafety cabinet near the working table.

3. The biosafety cabinet according to claim 1 , characterized in that an input port of a waste can is arranged in a straight line joining the ionizer and a rear surface slit of the biosafety cabinet.

4. The biosafety cabinet according to claim 1 , characterized in that the biosafety cabinet includes a first rear surface slit, and a second rear surface slit located at a predetermined height from the first rear surface slit.

5. A clean air device comprising:
the biosafety cabinet according to claim 1 ;
a clean booth; and
a pass box connecting the clean booth and the biosafety cabinet, characterized in that
a slit is provided in the pass box.

6. The clean air device according to claim 5 , characterized in that
a partition member is provided at a central part on an upper surface of the pass box, and
the slit is provided at an upper portion on a closer side to the clean booth than the partition member in the pass box.

Assignees

• Hitachi Industry Equipment Systems Co Ltd

Inventors

• Kaneko Takeshi
• Sato Hirotoshi

Classifications

• C12M37/00 Primary

  Means for sterilizing, maintaining sterile conditions or avoiding chemical or biological contamination (C12M23/38 takes precedence; filtration in general and filters per se B01D24/00-B01D41/00; autoclaves B01J3/04; treatment of microorganisms with electrical or wave energy C12N13/00) · CPC title

• A61G10/00

  Treatment rooms {or enclosures} for medical purposes (baby incubators, couveuses A61G11/00; devices for gas baths with ozone, hydrogen or the like A61H33/14 {; for isolating individuals from external stimuli A61M21/0094} ; containers or portable cabins for affording breathing protection in general A62B31/00) · CPC title

• B01L1/04

  Dust-free rooms or enclosures · CPC title

• F24F7/06

  with forced air circulation, e.g. by fan {positioning of a ventilator in or against a conduit} · CPC title

• B01L1/50

  for storing hazardous materials in the laboratory, e.g. cupboards, waste containers (sample containers B01L3/50) · CPC title