JPH04278105A - Kerosene burner - Google Patents

Abstract

PURPOSE:To maintain the temperature of the vaporization section for the auxiliary burner at a specified temperature and prevent defective vaporization of kerosene. CONSTITUTION:A carburetor 16 is divided by a partition wall 18 provided inside to form a main vaporization chamber 19 and an auxiliary vaporization chamber 20. The vaporization air inlet 21 and an oil sending nozzle 22 are provided adjacent to the partition wall 18. A temperature sensor 31 is provided near the partition wall 18. When the supply of kerosene to the auxiliary vaporization chamber 20 is stopped, the temperature of the vaporization section of the auxiliary vaporization chamber 20 is maintained at a level higher than the vaporization limit temperature, because the kerosene does not take away the heat of vaporization and the thermal conduction from the main vaporization chamber 19, etc., heats the vaporization section, and a faulty vaporization can be prevented even when the kerosene is supplied to the auxiliary vaporization chamber 20 again.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vaporizing oil combustion apparatus.

0002

[Prior Art] Conventional oil combustion equipment of this type is shown in Figs.
As shown in FIG. 6, a vaporizer 2 having a built-in U-shaped heater 1 was divided by a partition wall 3 and formed into a main vaporizing chamber 4 and a sub-vaporizing chamber 5. The vaporizing air inlet 6 and the oil feeding nozzle 7 were provided adjacent to the side walls of the main vaporizing chamber 4 and the sub-vaporizing chamber 5, and the heat receiving section 8 provided on the outer wall of the vaporizer 2 was formed of heat receiving fins. A main burner head 11 having a flame hole 9 and a secondary air port 10 is provided facing the heat receiving section 8 of the main vaporizing chamber 4, and a sub burner head 12 is similarly provided opposite the heat receiving section 8 of the sub vaporizing chamber 5. They were placed opposite each other. Further, the temperature detector 13 is provided on the side wall of the main vaporization chamber 4, and the combustion fan 14
An air chamber 15 communicating with the air supply passage was provided around the outer periphery of the vaporizer 2, the main burner head 11, and the auxiliary burner head 12.

Next, the preheating operation in the above configuration will be explained. The vaporizer 2 is preheated by the energized heater 1, and when the output of the temperature detector 13 rises to the set value, the heater 1
is controlled so that the temperatures of the main vaporizing chamber 4 and the sub-vaporizing chamber 5 reach the set temperature (approximately 250 to 320° C.).

Next, the combustion operation will be explained. combustion fan 1
The air sent from 4 is divided into two systems: vaporized air that flows into the vaporizer 2 from the vaporized air inlet 6, and secondary air that is ejected from the secondary air port 10. The kerosene collides with the vaporization sections of the main vaporization chamber 4 and the sub-vaporization chamber 5 and is vaporized. The generated vaporized gas mixes with the previous vaporized air to form a premixture, which is ejected from the flame hole 9, ignited by the discharge of the ignition electrode (not shown), and starts combustion. Combustion is promoted. When the combustion heat received by the heat receiving section 8 is thermally conducted to the vaporizer 2, both the main vaporizing chamber 4 and the sub-vaporizing chamber 5 approach the set temperature.
At the same time, the heater 1 is turned on and off, and the main vaporization chamber 4 and the sub-vaporization chamber 5 are turned on and off.
The temperature is controlled so that it reaches the set temperature.

[0005]

[Problems to be Solved by the Invention] However, in the conventional configuration described above, the temperature detector 13 is installed remotely from the vaporization section of the sub-vaporization chamber 5. Temperature fluctuations were difficult to detect. That is, when the amount of vaporized air or the amount of kerosene supplied differs between the main vaporizing chamber 4 and the sub-vaporizing chamber 5, the heater 1 is turned on and off and controlled so that the temperature of the vaporizing section of the main vaporizing chamber 4 reaches the set temperature. Therefore, in this case, the temperature of the vaporizing section of the sub-vaporizing chamber 5 is not necessarily controlled to the set temperature, which causes a problem that vaporization failure occurs.

On the other hand, when the supply of kerosene to the sub-vaporizing chamber 5 is stopped according to the required combustion amount, the main vaporizing chamber 4 receives combustion heat from the main burner head 11, but the vaporizing section of the sub-vaporizing chamber 5 The amount of heating due to heat conduction is small. Therefore, the vaporizing section of the main vaporizing chamber 4 can be controlled to reach the set temperature, but the vaporizing section of the sub-vaporizing chamber 5 cannot receive combustion heat, so the vaporization limit temperature is reached even though the latent heat of vaporization is not taken away by the kerosene. (about 22
0° C.), there is a problem in that when the supply of kerosene to the sub-vaporizing chamber 5 is restarted, vaporization will be poor.

[0007] The present invention is intended to solve the above-mentioned problems, and is aimed at preventing poor vaporization of kerosene.

[0008]

[Main Stage for Solving the Problems] In order to achieve the above object, the present invention has a main vaporizing chamber which is provided in a carburetor and is divided by partition walls and is always supplied with fuel during combustion. A sub-vaporizing chamber where supply and stop is performed, a vaporizing air inlet and an oil feed nozzle provided in the main vaporizing chamber and the sub-vaporizing chamber adjacent to the partition wall, and a temperature detector provided in the vaporizer near the partition wall. and a heat receiving part provided in the vaporizer.

[0009]

According to the present invention, with the above structure, the temperature detector detects the temperature of the partition wall which is affected by the heat balance of both the main vaporization chamber and the sub-vaporization section. Even if the amount of vaporized air or the amount of kerosene supplied is different between the main vaporizing chamber and the sub-vaporizing chamber, the heater is turned on and off to control the temperature of both the vaporizing parts of the main vaporizing chamber and the sub-vaporizing chamber to the set temperature.

On the other hand, when the supply of kerosene to the sub-vaporizing chamber is stopped according to the required combustion amount, the main vaporizing chamber, which absorbs combustion heat through the heat receiving section, transfers heat to the vaporizing section of the sub-vaporizing chamber. conduct. As a result, the vaporization section of the sub-vaporization chamber is heated by heat conduction from the main vaporization chamber and is maintained at a temperature above the vaporization limit temperature.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 to 4, reference numeral 16 denotes a vaporizer incorporating a U-shaped heater 17, and this vaporizer 16 is connected to a partition wall 18.
A main vaporizing chamber 19 and a sub-vaporizing chamber 20 having inclined walls are formed. Reference numeral 21 denotes a vaporized air inlet adjacent to the partition wall 18 and opened into the main vaporizing chamber 19 and the sub-vaporizing chamber 20. Reference numeral 22 denotes an oil feed nozzle facing an oil feed nozzle inlet 23 opened above the vaporized air inlet 21. Reference numeral 24 denotes a heat receiving portion having heat receiving fins provided on the outer walls of the main vaporization chamber 19 and the sub vaporization chamber 20. 25 is a main burner head in which a flame hole 26 and a secondary air port 27 are formed, and this main burner head 25 is provided facing the heat receiving part 24 of the main vaporization chamber 19; Heat receiving part 2 of chamber 20
It is provided opposite to 4. Reference numeral 29 denotes a uniform chamber divided into two rooms by a partition wall 30, and this uniform chamber 29 communicates with the main vaporizing chamber 19 and the main burner head 25, and with the sub-vaporizing chamber 20 and the sub-burner head 28, respectively. 31 is the partition wall 18
This is a temperature detector provided in the vaporizer 16 in close proximity to the vaporizer 16. A combustion fan 32 is provided around the carburetor 16, the main burner head 25, and the auxiliary burner head 28 and supplies combustion air to the air chamber 33.

Next, the preheating operation in this configuration will be explained. The vaporizer 16 is preheated by the energized heater 17, and when the output of the temperature detector 31 rises to the set value, the heater 1
7 is turned on and off to control the temperature of the main vaporization chamber 19 and the sub-vaporization chamber 20 to the set temperature.

Next, the combustion operation will be explained. Air supplied from the combustion fan 32 flows into the air chamber 33 from the lower part, and vaporized air is supplied to the carburetor 16 from the vaporized air inlet 21 and the oil feed nozzle inlet 23 and the secondary air port 27
The secondary air supply system is divided into two systems. Further, the kerosene ejected from the oil feed nozzle 22 collides with both the main vaporization chamber 19 and the sub-vaporization chamber 20, and is vaporized. Then, it is mixed with the previous vaporized air and homogenized in the uniformity chamber 29, and is burned together with the secondary air in the main burner head 25 and the auxiliary burner head 28, so that the combustion characteristics are good. When the combustion heat received by the heat receiving section 24 is thermally conducted to the vaporizer 16, the main vaporization chamber 1
Both the vaporizing sections of the main vaporizing chamber 19 and the sub-vaporizing chamber 20 approach the set temperature, and at the same time the heater 1 is turned on and off to control the temperature of both the main vaporizing chamber 19 and the sub-vaporizing chamber 20 to reach the set temperature.

Next, temperature control of both the main vaporizing chamber 19 and the sub-vaporizing chamber 20 will be explained. The partition wall 18 is strongly influenced by the heat balance of both the main vaporization chamber 19 and the sub-vaporization chamber 20. Then, the temperature of this partition wall 18 is detected by a temperature detector 3.
1 is detected, even if the amount of vaporized air or the amount of kerosene supplied differs between the main vaporizing chamber 19 and the sub-vaporizing chamber 20, the main vaporizing chamber 1
Both the vaporizing sections 9 and the sub-vaporizing chamber 20 can be controlled to the set temperature, thereby preventing poor vaporization.

[0016] Also, depending on the required combustion amount, the auxiliary vaporization chamber 20
When the supply of kerosene is stopped, the main vaporizing chamber 19 that has received the combustion heat of the main burner head 25 heats the vaporizing section of the sub-vaporizing chamber 20 by heat conduction. Further, since kerosene is not supplied to the sub-vaporization chamber 20, latent heat of vaporization is not taken away from the vaporization section. Therefore, since the sub-vaporization chamber 20 is maintained at the vaporization limit temperature or higher by heating by heat conduction from the main vaporization chamber 19, poor vaporization can be prevented even when kerosene is supplied again.

[0017]

[Effects of the Invention] As described above, the oil combustion apparatus of the present invention provides the following effects. (1) Since the temperature detector is installed near the partition wall, even if the amount of vaporized air or the amount of kerosene supplied differs between the main vaporization chamber and the sub-vaporization chamber, both the vaporization sections of the main vaporization chamber and the sub-vaporization chamber This has the effect of being able to control the temperature to the set temperature and preventing poor vaporization. (2) Since the vaporizing air inlet and oil supply nozzle are provided in the main vaporizing chamber and the sub-vaporizing chamber adjacent to the partition wall, even when the kerosene supply to the sub-vaporizing chamber is stopped depending on the required combustion amount. Since the vaporization section of the sub-vaporization chamber is heated by heat conduction from the main vaporization chamber and maintained above the vaporization limit temperature, there is an effect that poor vaporization can be prevented.

[Brief explanation of the drawing]

[Fig. 1] Partial side cross-sectional view of essential parts of an oil combustion device in an embodiment of the present invention.

[Figure 2] Planar sectional view of the device

[Figure 3] Longitudinal cross-sectional view of main parts of the device

[Figure 4] Partially cutaway external perspective view of the device

[Figure 5] Planar sectional view of a conventional oil combustion device

[Figure 6] Longitudinal cross-sectional view of main parts of the device

[Explanation of symbols]

16 Vaporizer 17 Heater 18 Partition wall 19 Main vaporization chamber 20 Sub-vaporization chamber 21 Vaporized air inlet 22 Oil feed nozzle 24 Heat receiving part 31 Temperature detector

Claims (1)

[Claims] Claim 1: A carburetor that vaporizes fuel, a partition wall that divides this carburetor, a main vaporization chamber that is provided in one of the divided parts and is always supplied with fuel during combustion, and a main vaporization chamber that is provided in the other divided part and is provided as necessary. a sub-vaporization chamber to which fuel is supplied and stopped according to the amount of combustion; a vaporization air inlet for supplying vaporization air and a vaporization air inlet provided in each of the main vaporization chamber and the sub-vaporization chamber adjacent to the partition wall; An oil combustion device comprising: an oil sending nozzle that ejects oil; a temperature detector provided on the vaporizer near the partition wall; and a heat receiving section provided on the vaporizer that absorbs combustion heat.