Dust measurement apparatus

Patent metadata

Field	Value
Publication number	US-11112343-B2
Application number	US-201716464235-A
Country	US
Kind code	B2
Filing date	Nov 16, 2017
Priority date	Dec 1, 2016
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

Provided is a dust measurement apparatus for accurately measuring the dust concentration of two spaces and minimizing the possibility of noise generation, comprising: a dust sensor; a body housing having the dust sensor loaded therein, and having an inner space; a first outer hole and a second outer hole, which are respectively formed at two points of the body housing so as to connect the outside and the inner space; a first fan and a second fan, which are provided at the positions corresponding to each of the first outer hole and the second outer hole and driven so as to form a flow toward the inner space from the outside; and a control part for selectively driving the first fan or the second fan.

First claim

What is claimed is:

1. An apparatus for measuring dust of a first outer space and a second outer space, the apparatus comprising:
a dust sensor;
a body housing having the dust sensor installed therein and providing an inner space;
a first outer hole formed at a first point of the body housing and connected to the first outer space and a second outer hole formed at a second point of the body housing and connected to the second outer space such that the inner space is connected to an outer environment, wherein the first outer space and the second outer space are separated from each other;
first and second fans respectively provided to locations corresponding to the first and second outer holes and driven to form a flow amount in a direction toward the inner space from the outer environment; and
a controller selectively driving one of the first and second fans,
wherein the dust sensor comprises:
first and second inner holes formed at two opposite sides of a sensing path going through the dust sensor, the first inner hole formed on a first side of the sensing path and the second inner hole formed on a second side of the sensing path; and
a sensing unit provided to a prescribed point on the sensing path, and

wherein the apparatus further comprises:
a first vent bracket forming a closed path between the first inner hole and the first outer hole; and
a second vent bracket forming a closed path between the second inner hole and the second outer hole.

2. The apparatus of claim 1 , wherein the first fan is provided to an outside of the first outer hole and wherein the second fan is provided to an outside of the second outer hole.

3. The apparatus of claim 1 , further comprising a mesh filter provided to each of the first and second vent brackets.

4. The apparatus of claim 1 , further comprising:
a first sealing bracket coupled to an outside of the first fan to form a path for an inflow of air from the outer environment; and
a second sealing bracket coupled to an outside of the second fan to form a path for an inflow of air from the outer environment.

5. The apparatus of claim 1 , further comprising:
a support bracket supporting rotation of each of the first and second fans;
a coupling hole formed in the support bracket; and
a projected fixing portion provided to the body housing to be coupled to the coupling hole,
wherein the support bracket and the body housing are spaced apart from each other.

Assignees

• Lg Electronics Inc

Inventors

• Lee Kangsun
• Kim Taehyung
• Lee Seunghyun
• Kim Misook
• Kim Seonghyok
• Kim Oedong
• Seo Hyekyoung

Classifications

• G01N15/06 Primary

  Investigating concentration of particle suspensions (by weighing G01N5/00; investigating sedimentation of particle suspensions G01N15/04; investigating individual particles G01N15/10) · CPC title

• G01N2001/245

  Fans · CPC title

• G01N2015/0096

  Investigating consistence of powders, dustability, dustiness · CPC title

• G01N1/24

  Suction devices {(G01N1/22 - G01N1/2294 take precedence)} · CPC title

• G01N1/2205

  with filters · CPC title