JPH05172004A - Ignition confirming device for stirling engine - Google Patents

Abstract

PURPOSE:To detect vibration of a burner main body or housing at the time of ignition explosion of fuel so as to stably perform confirmation of ignition for a long time by providing a vibration detection sensor on a predetermined position of the burner main body or housing. CONSTITUTION:In a combustion chamber 3 of housing 1, fuel is fed from a burner main body 2 while air is swirling-induced from a swirler 4, and the fuel is mixed with the air for combustion in a burner tile 5. Three radiant members 6-8 are arranged around the combustion chamber 3. An expansion cylinder 9 and regenerater 10 are arranged in the lower part of housing 1, and both are communicated with each other by a heater pipe 11. In this constitution, a vibration detection sensor 12 is attached to a predetermined position of the burner main body 2, and the vibration of the burner main body 2 at the time of ignition explosion of fuel is detected by the vibration detection sensor 12. Accordingly, confirmation of ignition can be performed stably for a long time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ignition confirmation device for a Stirling engine in a combustion chamber.

[0002]

2. Description of the Related Art FIG. 3 is a longitudinal sectional view showing a conventional ignition confirmation device for a Stirling engine, which is disclosed in Japanese Patent Laid-Open No. 63-36052. In the figure, 1 is a housing provided so as to cover the upper part of the Stirling engine,
Reference numeral 2 denotes a burner main body which is held in the housing 1 by penetrating the vicinity of an upper portion and a central portion of the housing 1 and is fueled by a fuel supply source (not shown). Reference numeral 3 denotes a combustion chamber having a predetermined capacity, which is provided below the housing 1 so as to be surrounded by the housing 1.
Fuel is supplied from. A swirler 4 is arranged around the burner body 2 to swirl and introduce combustion air into the combustion chamber 3, and a swirler 5 extends to the combustion chamber 3 side so as to cover the flame ejection tip of the burner body 2. The burner tile has a hollow circular shape, and the fuel ejected from the tip of the burner body 2 and the air from the swirler 4 are mixed and burned. Reference numeral 6 denotes a first radiation member that hangs from the upper portion of the housing 1 so as to surround the combustion chamber 3, and 7 stands upright from the lower portion of the housing 1 and has a larger diameter than the first radiation member and has a cylindrical shape. A second radiating member, 8 is a third radiating member having a cylindrical shape, which is hung from the upper part of the housing 1 and has a diameter larger than that of the second radiating member, and 9 is an expansion embedded in the lower part of the housing 1. A plurality of cylinders, 10 are also embedded in the regenerator, and 11 are arranged in parallel on the peripheral side of the combustion chamber 3 with a predetermined gap therebetween to connect the expansion cylinder 9 and the regenerator 10 together with the first regenerator. , 6, 2nd, 7th, 3rd
8 is a heater tube surrounded by eight radiation members.

The conventional ignition confirmation device for a Stirling engine is constructed as described above, and for confirming ignition such as flame condition, a platinum wire is wound around the tip of a rod,
Ion current emitted from the flame was detected, and ignition was confirmed from the change state of the platinum wire at the tip of the frame rod. The arrows indicate the flow of hot air.

[0004]

In the conventional ignition confirmation device for a Stirling engine as described above, a platinum wire is wound around the frame rod in order to detect the ion current, but it cannot be detected unless the flame is received. However, when a flame is received, the platinum deteriorates due to heat, which shortens the life of the detection rod, which eventually causes unstable detection.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain an ignition confirmation device for a Stirling engine capable of confirming the ignition condition without detecting an ion current with platinum. Has a purpose.

[0006]

In the ignition confirmation device for a Stirling engine according to the present invention, a vibration detecting sensor is attached to a predetermined position of the burner body.

Further, the vibration detecting sensor of the burner body is eliminated, and the vibration detecting sensor is attached at a predetermined position on the upper part of the housing.

[0008]

When the fuel ejected from the burner of the ignition confirmation device for the Stirling engine configured as described above is ignited, the explosion vibrates the burner body, and the vibration detection sensor attached to the burner body vibrates for ignition. To detect.

A vibration detection sensor mounted on the upper part of the housing detects a predetermined vibration of the housing.

[0010]

【Example】

Example 1. FIG. 1 is a sectional view showing an embodiment of the present invention, in which 1 to 11 are exactly the same as the above-mentioned conventional device. 12
Is a burner vibration detection sensor attached to the burner body in a portion projecting to the upper part of the housing in the vicinity of the upper portion of the burner body 2, where fuel from the tip of the burner body 2 and air from the swirler 4 are mixed. When ignited, the burner body 2 produces a predetermined vibration.

In the ignition confirmation device for a Stirling engine constructed as described above, the burner vibration detection sensor attached to the burner body 2 detects a predetermined vibration, that is, a unique vibration when the fuel is ignited. Also,
The burner body emits a unique vibration when the fuel is burning in the combustion chamber 3 as compared to when it is not burning. Therefore, the burner vibration detection sensor can detect the ignition state by the unique vibration. It is also possible to issue a peculiar alarm or the like from an alarm device or the like (not shown) separately connected.

Example 2. In the first embodiment, the burner vibration detection sensor 12 is attached to the burner main body 2 at a predetermined position protruding outward from the housing 1, so that the burner main body 2
In this embodiment, the vibration of the housing in the ignition state is vibrated by mounting the housing vibration detection sensor 13 at a predetermined position on the upper portion of the housing 1, as shown in FIG. Can be detected. The vibration of the housing in the ignition state is naturally different from the vibration in the non-ignition state. By setting a predetermined vibration of the housing in the ignition state, the vibration sensor detects whether the ignition state or the non-ignition state. can do. Further, in the well-known method, as shown in the first embodiment, it is possible to make various selections such as making an alarm and tripping when there is no ignition.

[0013]

According to the present invention, the burner vibration detecting sensor or the housing vibration detecting sensor is attached to a predetermined position of the burner body or a predetermined position of the upper portion of the housing.

A change in vibration between when the combustion chamber of the Stirling engine is not ignited and when it is ignited can be detected, and the ignition condition can be confirmed.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a first embodiment of the present invention.

FIG. 2 is a vertical sectional view showing a second embodiment of the present invention.

FIG. 3 is a vertical sectional view of a conventional ignition confirmation device for a Stirling engine.

[Explanation of symbols]

 1 Housing 2 Burner Main Body 3 Combustion Chamber 4 Swirler 5 Burner Tile 6 First Radiation Member 7 Second Radiation Member 8 Third Radiation Member 9 Expansion Cylinder 10 Regenerator 11 Heater Tube 12 Burner Vibration Detection Sensor 13 Housing Vibration Detection Sensor

Claims (2)

[Claims] 1. A housing having a combustion chamber of a predetermined volume therein, a burner main body which is held by the housing and penetrates an upper portion of the housing to supply fuel from the fuel supply source to the combustion chamber, and the burner. A swirler that is provided around the main body and swirls and introduces combustion air into the combustion chamber, a burner tile that is arranged in the vicinity of the swirler, and that can burn fuel by mixing fuel and air, and the housing that surrounds the combustion chamber. A cylindrical first radiation member that hangs down, a second radiation member that is erected from the lower portion of the housing and has a diameter larger than that of the first radiation member, and a second radiation member that dangles from the upper portion of the housing portion. And a third radiating member having a larger diameter than the second radiating member and having a cylindrical shape, an expansion cylinder and a regenerator embedded in a lower portion of the housing, the regenerator and the expansion cylinder. In addition to contacting
An ignition confirmation device for a Stirling engine, comprising: a heater tube surrounded by second and third radiation members, wherein a vibration detection sensor is attached to a predetermined position of the burner body. .. 2. The ignition confirmation device for a Stirling engine according to claim 1, wherein the vibration detecting sensor of the burner body is eliminated and the vibration detecting sensor is attached at a predetermined position on the upper part of the housing.