Dust measurement apparatus

• US 11,112,343 B2
• Filed: 11/16/2017
• Issued: 09/07/2021
• Est. Priority Date: 12/01/2016
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Kangsun, Kim, Taehyung, Lee, Seunghyun, Kim, Misook, Kim, Seonghyok, Kim, Oedong, Seo, Hyekyoung
• Primary Examiner(s): Patel, Nimeshkumar D
• Assistant Examiner(s): Kidanu, Gedeon M
• Application Number:
  US16/464,235
• Publication Number:
  US 20190391061A1
• Time in Patent Office: 1,391 Days
• Field of Search: 73 2801, 73 232, 73 2805, 7386322, 738655, 378 54, 378 57
• CPC Class Codes: G01N 1/2205 with filters
• CPC Class Codes: G01N 1/24 Suction devices G01N1/22 - G01N1/2294 take precedence
• CPC Class Codes: G01N 1/26 with provision for intake from several spaces
• CPC Class Codes: G01N 15/06 Investigating concentration of particle suspensions by weighing G01N5/00; investigating sedimentation of particle suspensions G01N15/04; investigating individual particles G01N15/10
• CPC Class Codes: G01N 15/075 by optical means
• CPC Class Codes: G01N 2001/245 Fans

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.

Claims

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.