JPH0632574B2 - Thermocouple generator - Google Patents

Description

The present invention relates to thermocouple generators, and more particularly to thermocouple generators that can be used with both gas and liquid fuels.

A thermocouple generator connects two kinds of conductors to make a closed circuit,
This is a generator that utilizes the Seebeck effect in which an electromotive force is generated and a current flows when a temperature difference is applied to both connection parts. For the communication equipment with relatively low power consumption, efficiency has improved in recent years due to the progress of semiconductors. As a power source, it is often used in areas where commercial power is not available.
However, the conventional thermocouple generator is exclusively based on gas fuel or liquefied gas fuel, and has a drawback that liquid fuel cannot be used.

The object of the present invention is to provide a thermocouple generator which can be used with both gas fuel and liquid fuel, excluding the above-mentioned drawbacks, whereby a liquid fuel is the main fuel and the gas fuel is used at the time of start-up. It is possible to improve reliability by, for example, always using gas fuel and using liquid fuel when gas supply is interrupted.

The thermocouple generator of the present invention includes a gas burner for injecting a pressurized gas fuel or a converted liquid fuel from a nozzle and sucking air to discharge and burn as a mixed gas, and a combustion chamber in which the mixed gas discharged by the gas burner burns. , One end surface of which is heated by this combustion, a power unit for generating electromotive force by the Beck effect to supply electricity to the outside, an exhaust port for discharging exhaust gas burned in the combustion chamber, and the exhaust port or the combustion chamber A vaporizer that heats and vaporizes the liquid fuel to generate gas pressure, a pressurizing means that pressurizes the liquid fuel and sends it to the vaporizer, and inserts between the gas burner and the vaporizer or at the input side of the vaporizer. And a fuel switcher for switching between two types of fuels to be used, a pressurized gas fuel supplied from the gas fuel supply port and a liquid fuel supplied from the liquid fuel supply port.

The present invention will now be described in detail with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention, in which a gas fuel supply port 1 is connected to a gas pipe or a liquefied gas cylinder to receive a supply of gas fuel at a constant pressure. Reference numeral 2 is a liquid fuel supply port connected to a fuel tank or the like for receiving the supply of liquid fuel, 3 is a fuel switcher for switching between gas and liquid fuel, and 4 is a vaporizer for heating and vaporizing the liquid fuel. Located at the base of the exhaust port 8 and heated to several hundred degrees by the combustion heat of the combustion chamber and exhaust gas, the vaporized liquid fuel becomes a high-temperature, high-pressure gas state, which is injected from the nozzle 61 of the gas burner 6 and the air intake port. Air is sucked from 62, becomes a mixed gas from the opening 63 at the tip, is discharged into the combustion chamber 7, and is burned. Reference numeral 5 is a pump for pumping the liquid fuel against the pressure of the vaporizer.
Reference numeral 9 is a power unit having a built-in thermopile, and the high temperature joint of the thermopile is on the furnace wall side of the combustion chamber 7 and is heated to a high temperature.
A radiation plate is attached to the low temperature side to generate electromotive force by the Seebeck effect and supply power to the load. In the case of gas fuel, the gas that has passed through the fuel switch is heated by the vaporizer and is injected from the nozzle. From the above description, it can be easily understood that not only gas fuel but also liquid fuel can be used according to the configuration of this embodiment.

Although a pump is used to pump the liquid fuel in the above-mentioned embodiment, a fuel tank may be provided at a high place instead of the pump to use gravity, and a weight or gas pressure may be applied to the upper part of the tank. A method such as addition may be used. Furthermore, the installation location of the vaporizer is not limited to the position in the embodiment. In addition, in the embodiment, the gas fuel is also configured to be injected from the nozzle through the carburetor, but the fuel switching device may be provided after the carburetor so that the gas fuel does not pass through the carburetor. You can also

As described in detail above, according to the present invention, not only gas fuel but also liquid fuel such as kerosene can be used, and air can be sucked and burned by injection from a nozzle without using a blower or the like. According to the present invention, it is possible to use kerosene as a main fuel and use a liquefied gas fuel such as propane at the time of start-up.Also, the gas fuel can be switched to kerosene mainly when the supply of gas is interrupted, so that the gas pipeline can be installed along the gas pipeline. When used as a power source for a wireless device to be installed, communication can be secured even in the event of a pipeline failure, which is economical and has the effect of improving the reliability of the line.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention. 1 ... Gas fuel supply port, 2 ... Liquid fuel supply port, 3 ... Fuel switching device, 4
... vaporizer, 5 ... pump, 6 ... gas burner, 61 ...
... Nozzle, 62 ... Air intake, 63 ... Opening, 7 ...
... combustion chamber, 8 ... exhaust port, 9 ... power unit.

Claims (1)

[Claims] 1. A gas burner (6) for injecting a pressurized gas fuel or a vaporized liquid fuel from a nozzle and sucking air to discharge and burn it as a mixed gas, and a combustion chamber in which the mixed gas discharged by this gas burner burns ( 7), a power unit (9) for supplying electromotive force to the outside by generating the electromotive force by the Seebeck effect by heating one end surface by this combustion, and an exhaust port (8) for discharging exhaust gas burned in the combustion chamber.
A vaporizer (4) provided in the exhaust port or in the combustion chamber for heating and vaporizing liquid fuel to generate gas pressure, and a pressurizing means (5) for pressurizing the liquid fuel and sending it under pressure to the vaporizer,
A fuel which is inserted between the gas burner and the vaporizer or at the input side of the vaporizer and switches between two types of fuel to be used: a pressurized gas fuel supplied from a gas fuel supply port and a liquid fuel supplied from a liquid fuel supply port. A thermocouple generator comprising a switching device (3).