JPS58168837A - Boiler - Google Patents

Abstract

PURPOSE:To provide stable rotation of a motor and promote a gasification of a keroscene in a small-sized boiler for a hot air type room heating unit by a method wherein a suction fan is arranged below a combustion chamber and the air suctioned from above the boiler and having its temperature risen by absovbing of waste heat is flowed through the fan. CONSTITUTION:Surrounding air is suctioned at the suction port 13 by the rotation of a fan 16 and then guided to the heat exchanging part 29, flow passage 30 and hot air suction port 17. During this passage, the air is heat exchanged with the discharged heat and sent from a gasification cup 19 as a primary air to the inside part 23 of a combustion cylinder 20. With this arrangmenet, the gasification of fuel is promoted by the heated air as a gasification gas mixing operation is continued the fuel is burnt to heat in advance the water in the pre- heating pipe 24. Then, the heat is radiated by the heat exhcnager 25 and discharged to the discharging cylinder 26. With this arrangement, the motor is heated by the heated surrounding air, so that a load in the motor at its low temperature is reduced, the stable rotation of the motor is provided and the gasification of keroscene can be promoted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a small boiler that is connected to a radiator (warm air heater) etc. for heating, especially a kerosene vaporizing boiler, and relates to a device for sending air for vaporizing kerosene and for combustion. The purpose is to use exhaust heat during combustion to send heated air to the motor body and the combustion section to obtain stable motor rotation and to promote vaporization when vaporizing kerosene. ◇ Conventionally, a kerosene vaporization boiler with a capacity of about 10,000 Kcal/h has an air suction port 2 located below the frame 1 as shown in Figure 1.
The air entering through the suction port 2 is sent to a combustion section 4 having a vaporization cup, a combustion tube, etc. by operation of a fan motor part 3 for blowing air, and is combusted.
The water flowing through the preheating pipe 6 and the main heat exchanger 6 was heated, and the exhaust gas for combustion was discharged to the atmosphere from the exhaust port 8 via the exhaust pipe 7.

However, with this conventional configuration, during the severe cold of winter when heating is performed, the temperature drops to below -10 degrees Celsius, so the temperature of the air sucked into the suction port 2 becomes low. Part 3 of the fan motor draws in more air, causing the fan motor's rotation to drop.The drop in rotation makes combustion unstable, and when the kerosene (liquid) vaporizes, it supplies low temperature, which accelerates vaporization. It has drawbacks such as being difficult to remove.

The present invention solves the above-mentioned conventional drawbacks, and one embodiment thereof will be described below based on FIG. 2.

11 is a frame of the boiler main body, and above this frame, furthermore,
An auxiliary frame body 12 is provided. 13 is this auxiliary frame body 1
An outside air intake port provided above 2, 14 a part of the fan motor, 16 a motor built into this part, 1
6 is a fan provided on the shaft of this motor 15; 17 is a warm air suction port that sucks hot air flowing in from above within the frame 11; 18 is a combustion section provided on the same axis of the motor 16; A vaporizing cup 19 is provided which rotates together with the motor 16. 20 is a combustion tube, and 21 is a part of the air sent upward by the fan 16 to the flame port 22 of the combustion tube 20.
A communication hole for sending secondary air (combustion air) to the
are vaporized and mixed inside the combustion cylinder 2o. 24 is a preheating tube, 25 is a main heat exchanger, and 26 is an auxiliary heat exchanger from a part of the frame 11 above the main heat exchanger 26. Frame 1
2 is an exhaust pipe provided above, 27 is an exhaust pipe 26
28 is an exhaust port through which the exhaust gas is discharged to the atmosphere; 29 is a heat exchange unit in which outside air flowing in from the intake port 13 is heat-exchanged with exhaust heat in the exhaust pipe 26; , 3o is a flow path through which the air heat exchanged in the heat exchange section 29 heads toward the hot air suction port 17 below, and is formed immediately inside the frame 11.

In the above configuration, when the boiler is operated, the motor 15 of the fan motor part 14 rotates, and at the same time the fan 16 and the vaporizing cup 19, which are coaxial with each other, rotate. 13, a heat exchange section 29, a flow path 30. This becomes a flow path that enters the air intake port 17, and after being burned in the combustion tube 2o, exhaust gas passes through the main heat exchanger 25 and becomes a flow path that is exhausted from the exhaust tube 26 and the exhaust port 28. Therefore, the operation continues, but the
When combustion begins, the heat exhausted upward from the exhaust stack 26 is high, so the low-temperature outside air flowing in from the intake port '3 provided above the frame 11, that is, the auxiliary frame, is heated. As it flows down the exchange part 29, it exchanges heat with the exhaust heat in the exhaust pipe 26, becomes warm air, further flows down the flow path 3o, and the heated air flows in from the hot air intake port 17. A part of the heated air that has flowed in is transferred from the vaporizing cup 19 to the inside 23 of the combustion tube 2o by the fan 16.
While the heated air is sent as secondary air and used to mix the vaporized gas to promote vaporization, some air also flows through the communication hole 21 and is sent as secondary air for combustion, where it is combusted and heated to the preheating tube. Preheat the water passing through 24, and transfer it to the main heat exchanger 25.
After being heated to a high temperature, the combustion exhaust gas passes through the exhaust pipe 26 and is discharged from the exhaust port 28.

In this way, the present invention provides an intake port to take in low-temperature outside air from above the frame and the auxiliary frame of the frame, and during combustion, exhaust heat is exchanged with the low-temperature outside air, and the heated air is heated. The hot air is distributed through the flow path to the hot air intake port, and is heated by the fan.
Since the motor is also heated and hot air is sent to the combustion section, the load on the fan and motor due to low temperatures is reduced, stable rotation is obtained, and the stable rotation also reduces the combustion flame. You can live a long life without the repeated phenomenon of red fire and blue fire. Also, during vaporization, vaporization is promoted because heated warm air is supplied, compared to the case where low-temperature cold air is supplied. Furthermore, since exhaust heat is utilized, there is no need for any other heating device, and it has practical effects such as being able to eliminate various disadvantages during extremely cold weather.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a conventional boiler configuration, and FIG. 2 is a sectional view of a boiler configuration according to an embodiment of the present invention. 11...Frame body, 12...Auxiliary frame body, 1
3...Outside air intake port, 14...Fan motor section, 17...Hot air intake port, 26...
・Exhaust pipe, 29...Heat exchange section.

Claims (1)

[Claims] A frame body, an outside air intake port provided above the frame body, and a frame body disposed at a predetermined distance from the frame body during combustion. a heat exchange section that exchanges heat with exhaust heat in the exhaust stack; a flow passage that guides air from the outside air intake port that is heated between the heat exchange section and the frame downward; and a flow path below the heat exchange section. It has a combustion section, a part of the fan motor, and a hot air suction port provided, and outside air is supplied from the outside air intake port through the heat exchange section to the fan motor part, the combustion section, and the heat exchange section. boiler.