JPS60155818A - Blower device for cooling exhaust cylinder - Google Patents

Abstract

PURPOSE:To make it possible to amply lower the temperature of exhaust gas led out of the exhaust cylinder top with a simple structure by sending a part of burner combustion air to the exhaust cylinder in a kerosene boiler or the like. CONSTITUTION:A combustion chamber 2 is provided in the inner part of the main body 1 of the kerosene boiler, and a heat exchanger 3 is provided by encircling the combustion chamber 2. An exhaust gas pipe 8 is provided upright on the upper wall of the combustion chamber 2, and the exhaust cylinder top 9 covers the exhaust gas pipe 8. The exhaust cylinder top 9 has a large number of small holes 10 for air suction, and a blast pipe 11 of the exhaust cylinder top branched from a blast route of a burner combustion blower 7 is opened. In this manner, since a part of the air flow of the burner combustion blower 7 is sent from the blast pipe 11 of the exhaust cylinder top into the exhaust cylinder top 9, the exhaust gas within exhaust cylinder top 9 is quenched, and a cooling effect is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an exhaust stack top cooling conveyance device applied to kerosene boilers and the like.

[Background technology]

The exhaust gas temperature of the water heater itself, such as a kerosene boiler, is approximately 300℃~
Although the temperature is 400℃, the temperature of the exhaust gas coming out from the top of the exhaust stack must be below 260℃ to prevent fires (JIS, 83024). Therefore, in the past, when using a shortened exhaust stack that did not provide a long temperature cooling flow path, many small air intake holes were provided at the top of the exhaust stack to lower the exhaust gas temperature, and air was naturally sucked in from around the outside. . However, with this structure, a large cooling effect could not be obtained and the cooling effect was insufficient. If forced air flow JfL is performed to the top of the exhaust stack, the cooling effect will be improved, but the structure becomes complicated, and for this reason, there is no common water heater that uses forced air flow for cooling.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an exhaust stack top cooling air blower that can sufficiently lower the temperature of exhaust gas exiting from the exhaust stack top and has a simple structure.

[Disclosure of the invention]

The exhaust stack top cooling blower device of the present invention is provided with an exhaust stack top blower pipe that branches off from the blower path of the burner combustion blower and blows air into the exhaust stack top.

Embodiment An embodiment of the present invention is shown in FIG. In the figure, ■ is the main body of the kerosene boiler, and a combustion chamber 2 is provided inside.
A heat exchanger 3 is provided surrounding the combustion chamber 2. 4 is a water supply port of the heat exchanger 3, and 5 is a hot water supply port of the heat exchanger 3. It has 6 burners and is connected to a burner combustion blower 7 inside the main body. An exhaust gas pipe 8 is erected on the earthen wall of the combustion chamber 2, and an exhaust pipe top 9 is placed over it. The exhaust pipe top 9 has a large number of air suction holes lO, and the burner combustion blower 7
An exhaust stack top blow pipe 11 branched from the air blow path is open.

(7) j: Since part of the air from the burner combustion blower 7 is sent from the exhaust stack top blower pipe 11 into the exhaust stack top 9, the exhaust gas inside the exhaust stack top 9 is rapidly cooled, resulting in large cooling. Effects can be obtained. Further, the structure is simple because it is only necessary to connect the exhaust stack top blower pipe 11 to the burner combustion blower 7 without using a dedicated blower for cooling.

FIG. 2 shows another embodiment. In this example, an exhaust pipe top blower pipe 11' is opened into an exhaust gas pipe 8 in an exhaust pipe top 9. 12 is a heat insulating material. in this way,
Even if the cooling air is sent directly into the exhaust gas pipe 11', the same effect as described above can be obtained.
This is similar to the embodiment.

FIG. 3 shows yet another embodiment. In this example, a nozzle 13 for spraying cooling air onto the outer surface of the exhaust gas pipe 8 is provided at the tip of the exhaust pipe top blower pipe 11. The rest is the same as the first embodiment.

〔Effect of the invention〕

The exhaust stack top cooling blower device of the present invention has the advantage of being able to sufficiently lower the temperature of exhaust gas exiting from the exhaust stack top and having a simple structure.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a kerosene boiler to which one embodiment of the present invention is applied, FIG. 2 is a sectional view of another embodiment, and FIG. 3 is a sectional view of still another embodiment. 2... Combustion chamber, 3... Heat exchanger, 6... Burner,
7... Burner combustion blower, 8... Exhaust gas pipe, 9
...Exhaust pipe top, 11...Exhaust pipe top blower pipe 6 Fig. 1 Fig. 3

Claims (1)

[Claims] A blower device for cooling the top of an exhaust stack, which is provided with an exhaust top blower pipe that branches from the blower route of the blower for burner combustion and blows air into the top of the exhaust stack.