Installation structure for gas sensor

• US 20030190261A1
• Filed: 03/28/2003
• Published: 10/09/2003
• Est. Priority Date: 04/04/2002
• Status: Active Grant

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Suzuki, Akihiro, Abe, Hiroyuki, Sasaki, Takashi
• Granted Patent: US 7,537,737 B2
• Time in Patent Office: Days
• US Class Current: 422/94
• CPC Class Codes: G01N 33/0009 General constructional details of gas analysers, e.g. portable test equipment G01N1/22 takes precedence
• CPC Class Codes: Y10T 436/21 Hydrocarbon
• CPC Class Codes: Y10T 436/218 Total hydrocarbon, flammability, combustibility [e.g., air-fuel mixture, etc.]
• CPC Class Codes: Y10T 436/22 Hydrogen, per se

Abstract

An installation structure for a gas sensor capable of detecting gas concentration in a highly accurate manner is provided. The installation structure for a gas sensor which detects concentration of gas circulating inside an outlet-side piping comprises a through hole 18 in an inner wall of the outlet-side piping and the gas sensor comprises a gas inlet portion with one face open within the outlet-side piping 14, and the gas sensor is installed to the outlet-side piping in a condition where the gas inlet portion does not protrude from the inner wall of outlet-side piping.

Claims

1. An installation structure for a gas sensor which detects concentrations of gas circulating inside piping, the installation structure comprises an opening provided in an inner wall of the piping, and the gas sensor comprises a gas inlet hole which opens inside of the gas piping, wherein said gas sensor is installed to the piping in a condition where said gas inlet portion does not protrude from the inner wall surface of the piping.

2. An installation structure for a gas sensor according to claim 1, wherein said opening is a through hole, and the gas sensor is installed to the piping from outside of the piping by inserting a protruding gas inlet portion into said through hole, and securing flanges of the gas sensor, which are provided extending to the front and rear of the gas inlet portion in the gas flow direction, to the piping by means of fasteners.

3. An installation structure for a gas sensor according to claim 1, wherein the gas circulating inside the piping is discharged gas from a cathode-side of a solid polymer electrolyte fuel cell, and the gas sensor is installed the upside of the piping in the direction of gravity.

4. An installation structure for a gas sensor according to claim 2, wherein the gas circulating inside the piping is discharged gas from a cathode-side of a solid polymer electrolyte fuel cell, and the gas sensor is installed the upside of the piping in the direction of gravity.

5. An installation structure for a gas sensor according to claim 1, wherein said gas sensor is a catalytic combustion method hydrogen gas sensor.

6. An installation structure for a gas sensor according to claim 2, wherein said gas sensor is a catalytic combustion method hydrogen gas sensor.

7. An installation structure for a gas sensor according to claim 1, 2 or 3, wherein said gas sensor is a catalytic combustion method hydrogen gas sensor.

8. An installation structure for a gas sensor for detecting concentrations of gas circulating inside piping, the installation structure comprises:

an opening of a through hole provided in an inner wall of the piping;

a gas sensor installed to the piping from outside of the piping by inserting a protruding gas inlet into said through hole;

securing flanges of the gas sensor, which is provided extending to the front and rear of the gas inlet portion in the gas flow direction to the piping by means of fasteners;

wherein the gas circulating inside the piping is discharged gas from a cathode side of a solid polymer electrolyte fuel cell, and said gas sensor is a catalytic combustion method hydrogen gas sensor.