Heating – Work chamber having heating means – Combustion products heat work by contact
Patent
1997-02-06
1999-12-07
Hoang, Tu Ba
Heating
Work chamber having heating means
Combustion products heat work by contact
432180, 432219, F27D 1700
Patent
active
059972920
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to an apparatus for generating extremely-high-temperature gas containing no impurities. More particularly, the present invention relates to a high-temperature gas generating apparatus mainly used as an experimental apparatus utilizing high-temperature gas, such as an apparatus for testing cracking/ignition characteristic of various types of fuel at a high temperature of approximately 1000 to 1600.degree. K. (approximately 727 to 1327.degree. C.) or a high-temperature gas supply source in a pyrogenetic reaction apparatus for a product that does not allow mixture of impurities.
BACKGROUND OF THE INVENTION
In order to obtain high-temperature gas containing no impurities, it has been general to use an electrothermal type heating apparatus using an electric heater or an indirect regenerative type heating apparatus using a regenerative tube.
However, in the electrothermal type heating apparatus, a start-up time is long because heating elements must be prevented from being disconnected, and this type of heating apparatus is therefore practically inconvenient.
Further, the heating apparatus using a tube type regenerator is inferior in the effectiveness of regenerator, and it is difficult to product this type of heating apparatus having practical material and structure in order to obtain gas having a high temperature of approximately 1000 to 1600.degree. K.
In these prior art heating apparatuses, a time for which the high-temperature gas can be supplied is short, and there is a problem such as that a preparation time for making it possible to supply the high-temperature gas is long. Furthermore, fluctuation in temperature is disadvantageously large because the temperature suddenly drops.
DISCLOSURE OF THE INVENTION
It is therefore an object of the present invention to provide a high-temperature gas generating apparatus by which a time before the next cycle for supplying the high-temperature gas is shortened, the high-temperature gas can be supplied for a long time, and fluctuation in the temperature during supply of the gas can be small.
To this end, a high-temperature gas generating apparatus according to the present invention is characterized in that: a burner apparatus which has a regenerator and exhausts combustion gas through the regenerator is disposed on both sides of a channel type combustion chamber having a high-temperature gas output means; an exhaust means and a means for supplying arbitrary gas that is to be heated to reach a high temperature are connected to the regenerator of each burner apparatus to constitute a passage along which the combustion gas is exhausted through the regenerator and a passage along which the arbitrary gas is led to the channel type combustion chamber via the regenerator and supplied from the high-temperature gas output means to an arbitrary position; the burner apparatuses alternately perform combustion so that the both regenerators reach a predetermined temperature; and combustion is thereafter stopped to pass the arbitrary gas through the regenerators and the arbitrary gas whose temperature has reached a predetermined value is supplied from the high-temperature gas output means to outside for a predetermined time.
According to this apparatus, when the combustion gas generated by the burner apparatuses that alternately carry out combustion passes through the regenerator of the burner apparatus provided on the opposed side and exhausted, sensible heat and waste heat of the combustion gas are recovered in the regenerator by direct heat exchange. Part of heat recovered in the regenerator is used for preheating the combustion air by direct heat exchange with extremely-high effectiveness to be returned to the combustion apparatus. In the combustion apparatus, alternately combustion is repeated to raise the temperatures of the both regenerators. Here, when the preheated combustion air is used to burn the fuel, the temperature in the furnace of the burner apparatus is suddenly raised and high-temperature heat can be accum
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Japanese Abstract No. 6-147461 (A)--May 27, 1994--Method for Controlling Heat Accumulative Type Burner--Akiyama.
Japanese Abstract 6-221526 (A)--Aug. 9, 1994--Alternative Combustion Heat Accumulating Type Burner--Moriya.
Japanese Abstract 2-21161 (A)--Jan. 24, 1990--Heating Apparatus--Okuno.
Japanese Abstract 57-104040--Jun. 28, 1982--Hot Air Type Space Heater--Sawai.
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Hasegawa Toshiaki
Ikebe, deceased Hiroshige
Katsuki Masashi
Mizutani Yukio
Sudo Jun
Hoang Tu Ba
Nippon Furnace Kogyo Kabushiki Kaisha
Wilson Gregory A.
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