JPH05223698A - Apparatus for heating heat engine - Google Patents

Abstract

PURPOSE:To confirm the ignition or combustion in a combustion chamber without an electric resistance detector by fitting at least one air vibration meter in specified positions of a housing and further installing its sensor section adjacent to the flame of the combustion chamber. CONSTITUTION:A sensor section 7A of an air vibration meter 7 is installed on the corner of a combustion chamber 4 so as not to be brought with the flame directly. The section 7A of the meter 7 fitted on a housing 5 always monitors the vibration of air generated by igniting or combusting within the combustion chamber 4. When ignition or combustion is not carried out, the air in the combustion chamber 4 little moves. Once ignition or combustion begins, a large air flow or air vibration is generated inside the chamber 4, and the sensor 7A detects them promptly and sends the result to the meter 7.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art FIG. 4 is a vertical cross-sectional view showing a conventional heating device for a heat engine disclosed in Japanese Patent Laid-Open No. 63-36052. In the figure, 1 is a main body of an engine or the like, 2 is an expansion chamber connected to the upper part of the main body 1, 3 is connected to the expansion chamber 2, and a heater tube for warming the gas in the expansion chamber 2 is 4 A combustion chamber 5 for heating the gas in the heater pipe 3 is a housing provided so as to cover and enclose the combustion chamber 4 and the heater pipe 3, and 6 is supported by the housing 5 to supply fuel to the combustion chamber 4. The fuel nozzle 7 is an air supply passage which is provided inside the housing 5 and is provided in the vicinity of the fuel nozzle of the fuel nozzle 6 and sends air to the fuel nozzle.

The conventional heating device for a heat engine is constructed as described above. For example, the fuel ejected from the fuel ejection port at the tip of the fuel nozzle 6 into the combustion chamber 4 is the air provided around the fuel nozzle 6. It is mixed with the air in the supply passage 7 and burned. The ignition at this time is performed by the fuel nozzle 6 which is an earth electrode,
It is performed by arc discharge between an ignition discharge electrode (not shown) provided in the vicinity thereof. The ignition is confirmed by applying a voltage between the fuel nozzle 6 and the fire detection electrode (not shown) and detecting the electric resistance of the fire existing between them.

[0004]

Since the conventional heating device for a heat engine is constructed as described above, an electric resistance detecting device is used for confirming ignition or combustion. Platinum must be embedded, and it is necessary to detect it by bringing it close to the flame, and therefore the life of platinum is short and must be replaced many times. There was a problem such as becoming.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to confirm ignition or combustion without using an electric resistance detecting device and also to confirm without using platinum. The purpose is to obtain a heating device for a heat engine.

[0006]

In a heating device for a heat engine according to the present invention, at least one air vibration measuring device is attached to a predetermined position of a housing, and a sensor portion of the air vibration measuring device is installed in a flame of a combustion chamber. It is arranged in the vicinity.

Also, the sensor portion of the vibration measuring device is attached to a predetermined position of the heater tube.

[0008]

The heating device of the heat engine configured as described above is
By the sensor of the air vibration measuring device installed in the combustion chamber,
Catch air vibrations during ignition or combustion.

Further, the sensor attached to the heater tube is
Catch the vibration of the heater tube due to ignition or burning.

[0010]

【Example】

Example 1. FIG. 1 is a sectional view showing an embodiment of the present invention, in which 1 to 6 are exactly the same as the above-mentioned conventional device.
Reference numeral 7 is an air vibration measuring device attached to the upper part of the housing 5, and its sensor portion 7A is arranged in a corner of the combustion chamber 4 where it does not come into direct contact with the flame. It catches the vibration of the air inside. The arrows indicate the flow of air.

In the heating device of the heat engine constructed as described above, the air is generated by the ignition or combustion that has occurred inside the combustion chamber 4 by the sensor portion 7A of the air vibration measuring device 7 attached to the housing 5. Is always caught, and there is almost no movement of air in the combustion chamber 4 during ignition or combustion. However, once this starts to ignite or burn, a large air flow or vibration occurs there, and the sensor 7A catches this and transmits it to the air vibration measuring device mounted on the upper part of the housing 5.

Example 2. In the first embodiment, the air vibration measuring device 7 is attached to the housing 5 and the sensor 7A catches the vibration of the air in the combustion chamber 4 to confirm ignition and combustion. However, in the present embodiment, As shown in FIG. 2, the sensor portion 8A of the vibration measuring device 8 is attached so as to be in contact with the outer tube of the heater tube 3, and the heater tube 3 is igniting or burning.
The vibration of the device is caught by the vibration measuring device 8 and ignition or combustion is confirmed.

[0013]

Since the present invention is constructed as described above, it has the following effects.
By arranging the sensor part of the air vibration measuring device at a predetermined part of the combustion chamber, ignition or combustion can be detected by vibration of air.

By mounting the sensor part of the vibration measuring device at a predetermined position of the heater tube, the vibration of the heater tube causes
Ignition or combustion can be confirmed.

[Brief description of drawings]

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

FIG. 2 is a sectional view showing Embodiment 2 of the present invention.

FIG. 3 is a sectional view showing a conventional heating device for a heat engine.

[Explanation of symbols]

 1 Main Body 2 Expansion Chamber 3 Heater Tube 4 Combustion Chamber 5 Housing 6 Fuel Nozzle 7 Air Vibration Measuring Device 8 Vibration Measuring Device

Claims (2)

[Claims] 1. An expansion chamber connected to a main body, a heater pipe for circulating hot gas in the expansion chamber, a combustion chamber for warming the heater pipe, and a combustion chamber formed to cover the combustion chamber. A heating device for a heat engine, comprising: a housing; a fuel nozzle that is supported by the housing and supplies fuel to the combustion chamber; and an air supply path that supplies air to a vicinity of a fuel injection port of the fuel nozzle. A heating device for a heat engine, characterized in that at least one air vibration measuring device is mounted at a predetermined position, and a sensor portion of this air vibration measuring device is arranged near a predetermined flame of the combustion chamber. 2. An expansion chamber connected to the main body, a heater tube for circulating hot gas in the expansion chamber, a combustion chamber for warming the heater tube, and a combustion chamber formed to cover the combustion chamber. A heating device for a heat engine, comprising: a housing; a fuel nozzle supported by the housing to supply fuel to the combustion chamber; and an air supply path for supplying air to a vicinity of a fuel injection port of the fuel nozzle, wherein the heater tube is provided. A heating device for a heat engine, wherein a sensor part of a vibration measuring device is connected to a predetermined position of the heating device.