JPS5939641Y2 - Combustion stabilization device for gas combustion equipment, etc. - Google Patents

Description

[Detailed description of the invention] The present invention relates to a combustion stabilization device for gas combustion equipment, etc., which stabilizes combustion by attaching it to the wall surface of the combustion chamber near the nozzle of the burner of the gas combustion equipment, etc., and its purpose is to However, by providing a protective structure on the stabilized zirconia that forms the electrode provided to deal with incomplete combustion and flame extinguishment in gas combustion equipment, it is easy to attach to the equipment and has excellent mechanical strength. It is intended to obtain equipment.

Hereinafter, the structure of the present invention will be explained with reference to the drawings shown as an embodiment of the present invention.

1 is a cylindrical stabilized zirconia, and electrodes are formed by baking or spraying platinum on the inner and outer circumferential surfaces.

2 is a sensor part; 3 is a cylindrical case made of brass in which stabilized zirconia 1 is inserted so that only the sensor part 2 protrudes;
The inner diameter of the case 3 is larger than the outer diameter of the stabilized zirconia 1 so as to separate the outer peripheral surface of the stabilized zirconia 1 from a space.

Reference numeral 4 denotes a mounting screw portion provided on one peripheral side of the cylindrical case 3, and 5 a lead wire connected to an electrode formed of stabilized zirconia, which is drawn out from the side where the screw portion 4 is formed.

! The metal electrode on the inner peripheral surface of the stabilized zirconia was also soldered to the lead wire before being covered with the insulator.

A heat-resistant inorganic substance 6 is filled in the space between the stabilized zirconia 1 and the cylindrical case 3 and is fixed thereto, and protects the connection between the electrode and the lead wire 5 and the cylindrical case 3.

Note that the metal case is not limited to brass and may be made of other metals, and the metal electrode formed on the stabilized zirconia is not limited to platinum.

In the device of the present invention constructed as described above, the stabilized zirconia and the metal electrodes on its inner and outer peripheral surfaces function as an oxygen concentration battery due to the atmosphere near the burner flame, and respond to the difference in oxygen concentration near the inner and outer electrodes. Due to the generation of electromotive force,
Incomplete combustion in gas combustion equipment, etc. can be detected.

Furthermore, since the stabilized zirconia and the metal electrodes on its inner and outer peripheral surfaces also function as an NTC thermistor, it is possible to detect the temperature near the flame of a burner, and to detect the extinguishment of the flame of gas combustion equipment.

The present invention has a configuration in which the cylindrical stabilized zirconia with electrodes formed thereon is inserted and protected into the metal case with only the sensor part protruding, and the stabilized zirconia and the metal case are fixed with a heat-resistant inorganic substance. It has excellent heat resistance and mechanical strength, and has practical effects such as being extremely easy to attach to equipment due to the threaded part provided in the metal case.

[Brief explanation of the drawing]

The drawing is a side view showing an embodiment of the combustion stabilizing device for gas combustion equipment, etc. according to the present invention, with main parts cut away. 1... Stabilized zirconia, 2... Sensor part, 3...
・Case, 4...Thread part, 6...Inorganic substance.

Claims (4)

[Scope of utility model registration request] (1) Metal electrodes are formed on the inner and outer circumferential surfaces of a cylindrical stabilized zirconia, only the sensor part is protruded and inserted into a metal case, and a heat-resistant inorganic substance is filled between the stabilized zirconia and the metal case. A combustion stabilizing device for gas combustion equipment or the like, characterized in that a lead wire having one end implanted in the inorganic substance is connected to the stabilized zirconia electrode. (2) Utility model registration claim 1 formed by baking metal electrodes on the inner and outer circumferential surfaces of cylindrical stabilized zirconia
Combustion stabilization devices for gas combustion equipment, etc. described in Section 1. (3) Utility model registration claim No. 1, which is formed by spraying metal electrodes on the inner and outer circumferential surfaces of cylindrical stabilized zirconia.
Combustion stabilization devices for gas combustion equipment, etc. described in Section 1. (4) A combustion stabilizing device for gas combustion equipment, etc., as set forth in claim 1, which has a mounting screw portion on a part of the outer periphery of the metal case.