JPH0324981Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] The heat generated by burning kerosene,
This relates to a pot-type burner that evaporates and burns kerosene at the bottom of the pot.

[Conventional technology]

As shown in FIG. 2, a conventional pot-type burner jets liquid fuel such as kerosene into a pot 1 from a fuel supply pipe 5, and heats and evaporates it using radiant heat from a heat source, such as a ceramic heater 8, installed in the pot 1. It ignites and emits a blue flame. At this time, the air blown by the blower 3 passes through the air passage 4 surrounding the outer periphery of the pot 1, passes through the primary air hole 6 provided in the outer peripheral wall of the pot 1, mixes with the evaporated kerosene, and is heated by the heater. It is ignited and then completely combusted by the air from the secondary air hole 7, and the combustion exhaust gas is sent to the combustion chamber 9.

[Problems to be solved by the invention] In such a conventional pot burner, the air from the blower 3 directly hits the bottom of the pot 1, so the bottom of the pot is cooled during ignition, making it difficult to evaporate liquid kerosene. Moreover, since relatively low temperature air enters the pot as it is during combustion, the temperature inside the pot decreases, further reducing the combustion efficiency.

[Means for solving problems]

In order to solve the above drawbacks, the present invention has the following points:
In addition, an air passage 4 is provided around the entire circumference including the combustion tube 2, and the air blown from the upper part of the outer periphery of the combustion tube 2 in the direction of the arrow is preheated by internal combustion heat and then transferred to the primary periphery of the pot 1. Air is blown into the pot 1 through the air hole 6 and the secondary air hole 7.

[Effect]

Since the air blown from the outer periphery cools only the outer periphery, excluding the combustion tube and the bottom of the pot, the bottom of the pot can be maintained at a high temperature during ignition, and the air sucked into the pot is preheated and reaches a high temperature, producing both primary and secondary. As a result, combustion efficiency can be increased by supplying high-temperature air since it is drawn in through the air holes.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

As shown in the figure, a combustion tube 2 is connected to the upper end of the pot 1, and a coaxial annular air passage 4 surrounds the outer peripheral wall of the combustion tube 2.
and a blower 3 provided at the upper part of the combustion chamber.
The air sent from the combustion tube 2 is made to flow toward the bottom of the pot 1 below through the outer peripheral wall of the combustion tube 2,
Furthermore, at this time, air is prevented from directly hitting the bottom of the pot. Therefore, air is drawn into the pot 1 through the primary air hole 6 and the secondary air hole 7 formed in the pot without cooling the bottom surface of the pot 1. Kerosene squirted into the pot 1 from the oil supply pipe 5 is evaporated by the radiant heat from the ceramic heater 8, mixed with air from the primary air hole 6, ignited by the ceramic heater 8, and then evaporated from the secondary air hole 7. The flame is completely combusted by the air and guided into the combustion chamber 9 as a blue flame.

[Effect of idea]

As described above, according to the present invention, the kerosene evaporates quickly because the blown air does not cool the bottom of the pot during ignition. In addition, the combustion air sent by the blower is preheated from around the combustion tube and blown toward the lower pot to cool the outer periphery of the combustion tube, which is at a high temperature during combustion. As a result of the high-temperature air being sucked into the pot through the secondary air holes, it can be expected that the combustion efficiency will be significantly increased due to the supply of high-temperature air.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of an embodiment of a pot-type burner according to the present invention, and FIG. 2 is a longitudinal cross-sectional view of a conventional pot-type burner. 1...Pot, 2...Combustion tube, 3...Blower,
4...Blower path, 5...Oil supply pipe, 6...Primary air hole, 7...Secondary air hole, 8...Ceramic heater, 9...Combustion chamber.

Claims (1)

[Scope of Claim for Utility Model Registration] A pot-type burner having a pot containing a built-in heater part, a plurality of air holes bored on the outer periphery of the pot, and a combustion tube mounted on the top of the pot: A pot-type burner characterized in that an air passage is provided to guide air blown from above the combustion cylinder to the plurality of air holes along the outer periphery of the combustion cylinder.