Airborne-substance detection device and cartridge used in same

Patent metadata

Field	Value
Publication number	US-9702805-B2
Application number	US-201314764221-A
Country	US
Kind code	B2
Filing date	Jan 29, 2013
Priority date	Jan 29, 2013
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

An airborne-substance detection device includes a cartridge and an optical detector. The cartridge includes: an inflow plate having formed therein a micropore that allows inflow of a microparticle-containing gas; a trapping plate disposed opposite the micropore and having the ability to capture the microparticles on a surface facing the micropore; and a main body in which the inflow plate and the trapping plate are installed, and in which a channel is formed that channels the gas to the micropore. The optical detector optically detects the microparticles captured on the trapping plate. The trapping plate is disposed on the outermost side of the cartridge, and is configured from a light transmissive member. The optical detector detects the captured microparticles on the trapping plate from the back side of the trapping plate.

First claim

The invention claimed is:

1. A cartridge for airborne-substance detection devices, the cartridge comprising:
an inflow plate having formed therein a micropore that allows inflow of a microparticle-containing gas;
a trapping plate disposed opposite the micropore and having the ability to capture the microparticles on a surface facing the micropore; and
a main body in which the inflow plate and the trapping plate are installed, and in which a channel is formed that channels the microparticle-containing gas to the micropore,
wherein the trapping plate is disposed on the outermost side of the cartridge with the trapping surface facing inward, and is configured from a light transmissive member.

2. The cartridge for airborne-substance detection devices according to claim 1 ,
wherein a gap is formed between the inflow plate and the trapping plate disposed opposite each other, and
wherein the main body includes:
at least one storage container for storing a liquid;
a waste liquid container for retaining the liquid flowed out of the storage container and passed through the gap between the inflow plate and the trapping plate; and
a channel connecting the gap and the waste liquid container to each other, and a channel connecting the gap and the storage container to each other.

3. The cartridge for airborne-substance detection devices according to claim 2 , wherein an adhesive substance or a substance capable of specifically binding to the microparticles is bound or adsorbed to the microparticle-capturing surface of the trapping plate.

4. The cartridge for airborne-substance detection devices according to claim 2 , wherein the microparticles which can be captured are at least one selected from viruses, bacteria, yeasts, protozoa, fungi, spores, pollen, fragmented animal skin, feces or dead bodies of mites, house dust, gas emission particles, and ore particles.

5. The cartridge for airborne-substance detection devices according to claim 2 , wherein the inflow plate has a plurality of micropores, and is light transmissive.

Assignees

• Hitachi Ltd

Inventors

• Takenaka Kei
• Togashi Shigenori

Classifications

• G01N15/0612 Primary

  Optical scan of the deposits (G01N15/0625 takes precedence) · CPC title

• G01N2015/0046

  in gas, e.g. smoke · CPC title