JP2789785B2 - Combustion equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a combustion device using petroleum as a fuel.

2. Description of the Related Art A conventional combustion apparatus of this type is configured as shown in FIG.

That is, reference numeral 1 denotes a heater, which is cast into a bottomed cylindrical vaporizing cylinder 2. Reference numeral 3 denotes a primary air pipe provided on a side wall of the vaporization cylinder 2 and a fuel ejection pipe 4 provided inside. 5 is a vaporization cylinder 2
Is a heat receiving portion provided at the upper end of the heat receiving portion, 6 is a flame port provided along the heat receiving portion 5, and 7 is a flame port cap.

Here, when the heater 1 is energized and the vaporization cylinder 2 reaches a predetermined temperature, the combustion fan and the fuel supply pump (both are not shown) are operated, and primary air for vaporization is blown from the primary air pipe 3 and the fuel is supplied. Fuel is supplied from the ejection pipe 4. The supplied fuel is vaporized by the heated inner wall of the vaporization cylinder 2 and is mixed with primary air to become a vaporized gas. The vaporized gas rises in the vaporizing cylinder 2 and is ejected from the flame port 6, and is ignited by an igniter (not shown) to start combustion. Thereafter, the heat receiving unit 5 receives the heat of the combustion flame, feeds it back to the vaporization cylinder 2 to promote vaporization, stops the power supply to the heater 1, and continues combustion.

However, in the above configuration, since the path from the vaporizing cylinder 2 to the flame opening 6 is single, there is a limit in fuel supply and combustion when the amount of combustion is greatly varied. It is necessary to switch and use a plurality of combustion devices. for that reason,
It is difficult to preheat another stopped combustion device with the operating combustion device, and when a plurality of carburetors 2 are provided, the heat loss increases and the power consumption increases. Was.

SUMMARY OF THE INVENTION The present invention solves such a conventional problem, and performs preheating of a carburetor that is not operated by a combustion flame, and integrates a plurality of carburetors and a mixing chamber to prevent heat loss and reduce power consumption. The purpose is to:

Means for Solving the Problems In order to solve the above problems, the combustion device of the present invention is configured such that the inside of the mixing chamber is separated into a plurality by a mixing chamber partition, and the inside of the vaporizer is divided into a plurality by a vaporizer partition. It has a configuration in which it is provided independently.

Function The present invention is not used because the entire vaporizer is heated by the formed combustion flame even if there is a flame opening in which the combustion flame is not formed among the plurality of flame openings by the above-described configuration. The vaporizer can be preheated at the same time. Further, by integrating the vaporizer and the mixing chamber, the heat radiation area is reduced, and the power consumption for the heater input is reduced.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3 of the accompanying drawings.

In FIGS. 1, 2 and 3, reference numeral 8 denotes a cylindrical mixing chamber with a bottom, an opening 10 for a flame port 9 and an air-fuel mixture inlet at the top.
11 are connected in series. A heat receiving wall 12 erected from a part of the mixing chamber 8 is provided around the flame outlet 9. The inside of the mixing chamber 8 is a passage sandwiched from above by the partition 13.
14 are provided. The inside of the mixing chamber 8 is divided into a plurality of independent mixing passages 16 by a mixing chamber partition 15, and a flame port 9, an opening 10, a mixture gas inlet 11, and a heat receiving wall 12 are provided above the respective mixing passages 16. Are provided, and a partition 13 and a passage 14 are provided inside.
Is provided. A mixture outlet 18 provided below a box-shaped vaporizer 17 is provided in close contact with an upper portion of the mixture inlet 11. Reference numeral 19 denotes a heat receiving portion provided by projecting a part of the side wall of the vaporizer above the flame port 9.
Inside 19, an inclined vaporization surface 20 is provided. twenty one
Is a heater cast into the vaporizer 17. A primary air inlet 22 is provided in a part of the side wall of the carburetor 17, and a fuel nozzle 23 is inserted inside the primary air inlet 22. The tip of the fuel nozzle 23 is provided toward the vaporization surface 20. 24 is a combustion flame.
The interior of the vaporizer 17 is divided into a plurality of independent vaporization passages 26 by a vaporizer partition 25, and each of the vaporization passages 26 is provided with an air-fuel mixture outlet 18, a vaporization surface 20, a primary air inlet 22, and a fuel nozzle 23. Have been.

In the above-described configuration, when the heater 21 is energized and the carburetor 17 reaches a predetermined temperature, the combustion fan and the fuel supply pump (both not shown) are operated, and primary air is blown from the primary air inlet 22 to the fuel nozzle 23. Fuel is ejected from The ejected fuel is diffused while being blown up by the primary air on the inclination of the vaporizing surface 20, and the vaporization is promoted. The fuel vaporized on the vaporizing surface 20 is mixed with the primary air to become a vaporized gas, and is supplied from the gas mixture outlet 18 of the vaporizer 17 to the gas mixture inlet of the mixing chamber 8.
It flows into the mixing chamber 8 through 11. The vaporized gas meanders in the passage 14 sandwiched by the partitions 13, and is promoted so that the mixing becomes more uniform. The vaporized gas is sent from the opening 10 of the mixing chamber 8 to the flame port 9, is ejected from the flame port 9, is ignited by an igniter (not shown), and a combustion flame 24 is formed in the flame port 9, and combustion is performed. Is started. The heat of the combustion flame 24 is received by the heat receiving portion 19 of the vaporizer 17 and the vaporizer
Give feedback to all 17 Since the vaporizing surface 20 is provided at a position inside the heat receiving section 19, the fastest and a large amount of heat is fed back in each section of the vaporizer 17, and vaporization is promoted. The heater 21 keeps the temperature of the carburetor 17 constant while turning on and off the power supply, and continues the combustion. Also, the heat of the combustion flame 24 is fed back from the heat receiving wall 12 of the mixing chamber 8 to each part of the mixing chamber 8 to maintain the temperature of the mixing chamber 8 at a high temperature and promote mixing. Here, when changing from the maximum combustion amount to the minimum combustion amount, the combustion flame 24 formed in each of the plurality of flame ports 9 is a single combustion flame formed in the predetermined flame port 9. By switching to 24, this single combustion flame 24 heats the heat receiving section 19 of the carburetor 17,
The mixing passage 16 and the vaporizing passage 26 where the combustion flame 24 is not formed.
The heat is also transmitted to the heater 21 and the preheating for the restart is performed in addition to the operation of the heater 21, so that the power consumption can be reduced. Further, since the plurality of mixing passages 16 and the vaporization passages 26 are integrated and the surface area is reduced, radiation loss from radiation from the radiation passage itself and cooling by air is reduced. As a result, the consumption of electric power input to the heater 21 during operation of the combustion device or during standby can be reduced. Further, since the mixing chamber 8 is always preheated, the vaporized gas does not touch the inner wall of the mixing passage 16 to form dew, thereby preventing generation of white smoke and odor when extinguishing the combustion. Further, since the vaporized gas flows out of the vaporizer 17, is meandered by the partitioning section 13 in the mixing chamber 8 and is sufficiently mixed in the process up to the flame opening 9, the yellow fire is generated. Can be prevented and the exhaust gas characteristics can be improved. In addition, even if tar is generated by using the deteriorated oil or the like, the deteriorated oil does not stay on the inclined vaporized surface 20, so that tar does not accumulate on the vaporized surface 20 and good vaporization characteristics are maintained. it can. In addition, the tar component dropped from the vaporizing surface 20 and the degraded oil that cannot be completely vaporized are removed from the vaporizer 17.
The mixture falls through the mixture outlet 18 at the lower part of the chamber and the mixture inlet 11 of the mixing chamber 8 into the mixing chamber 8 and accumulates therein.
Good vaporization characteristics can be maintained without accumulation of tar therein. Further, since the vaporization surface 20 is provided inside the heat receiving section 17, a large amount of heat is obtained, and a large amount of vaporization can be obtained. Further, since the vaporization surface 20 is inclined, the fuel ejected from the fuel nozzle 23 spreads along the vaporization surface 20, and the effective vaporization surface 20 increases, and the vaporization is promoted.

Effects of the Invention As described above, according to the liquid fuel combustion device of the present invention, the following effects can be obtained.

(1) Since the inside of the carburetor is divided into a plurality of independent vaporization passages by the carburetor partition, even if a combustion flame is formed in some of the flame openings by switching when the combustion amount is variable, vaporization is performed. The entire vessel is heated, the temperature of the vaporizing surface or the vaporizing passage is kept at a high temperature, and the power consumption of the vaporizer heater can be reduced.

(2) Since the inside of the mixing chamber is divided into a plurality of independent mixing passages by the mixing chamber partition, even if a combustion flame is formed in some of the flame openings by switching when the combustion amount is variable, mixing is performed. The entire room is heated, the temperature of the mixing passage is maintained at a high temperature, and dew condensation of vaporized gas is prevented, so that generation of white smoke and odor at the time of fire extinguishing can be prevented.

(3) Since the mixing passage and vaporization passage are integrated,
The surface area is reduced, the radiation loss due to radiation from itself and cooling by air is reduced, and the power consumption of the heater of the vaporizer during operation of the combustion device or during standby can be reduced.

[Brief description of the drawings]

1 to 3 are sectional views of a main part of a combustion device according to an embodiment of the present invention, and FIG. 4 is a partial sectional view of a conventional combustion device. 8: Mixing chamber, 9: Flame outlet, 11: Mixture inlet, 15 ...
… Mixing chamber partition, 16… mixing passage, 17… vaporizer, 18 ……
Mixture outlet, 19 ... Heat receiving part, 25 ... Vaporizer partition, 26 ...
Vaporization passage.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F23D 11/44 F23D 11/10 F23D 23/00

Claims (1)

(57) [Claims] 1. A mixing chamber having a bottomed cylindrical shape, a mixing chamber partition provided inside the mixing chamber, and a mixing passage formed by separating the inside of the mixing chamber into a plurality of parts by the mixing chamber partition. And a flame port provided respectively in the upper part of the mixing passage,
A mixture inlet provided in the upper part of the mixing passage connected to the flame outlet, and a box-shaped vaporizer provided in the upper part of the mixture inlet through the respective mixture outlet; A vaporizer partition provided inside the vaporizer, a vaporizer passage provided independently of the vaporizer by the vaporizer partition and having a plurality of the mixture outlets, and a side wall of the vaporizer. A heat receiving portion provided by projecting a portion above the flame outlet.