JP3072451B2 - Liquid fuel combustion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a liquid fuel is vaporized and mixed with the combustion air fed to the bar Nahe head, in which this case related to the liquid fuel combustion apparatus so as to ignite and burn.

[0002]

2. Description of the Related Art FIG. 2 is a longitudinal sectional view showing an example of the vicinity of a combustion section of a conventional liquid fuel combustion device. Reference numeral 1 denotes a vaporizing cylinder which vaporizes a liquid fuel and mixes it with combustion air to generate a combustible mixed gas. Reference numeral 2 denotes an electric heater buried in a side wall of the vaporizing cylinder 1. 3 is placed on top of the vaporizing tube 1, a bar Nahe head to form a combustion flame, 4 provided in the bar Nahe head 3,
A plurality of flame holes, 5 is a wire mesh that is in close contact wound on the outer peripheral surface of the bar Nahe head 3.

[0003] Reference numeral 6 denotes an annular flame holding ring provided around the burner head 3, which prevents the spread of the flame and protects the combustion flame from disturbance. 7 is installed in the side wall of the vaporizing tube 1, a temperature detector for detecting the temperature, 8 temperature detector 7
Are fixed to the side wall of the vaporizing cylinder 1, and 10 are screws for fixing the fixing metal 8 to the vaporizing cylinder 1. Reference numeral 11 denotes a nozzle unit for feeding combustion air into the vaporizing cylinder 1, and reference numeral 12 denotes a needle pipe provided in a longitudinal direction of a central portion in the nozzle unit 11. 13 denotes a diaphragm portion which is installed in the upper portion of the vaporizing tube 1, 14 in the upper portion of the throttle section 13 in the interior of the bar Nahe head 3
A mixed plate attached taken.

[0005] Reference numeral 15 denotes a table for mounting and fixing the vaporizing cylinder 1,
Reference numeral 6 denotes a vaporizing cylinder fixing screw for fixing the vaporizing cylinder 1 to the placing table 15. Reference numerals 17 and 18 denote a primary combustion flame and a secondary combustion flame ignited by an ignition means (not shown) such as a discharge spark.

[0005] Next, the operation of the liquid fuel combustion apparatus configured as described above will be described. First, in the assembling work of the liquid fuel combustion apparatus, in order to attach the temperature detector 7 to the side wall of the vaporizing cylinder 1, the temperature detector 7 is held down by the fixing metal fitting 8, and the fixing metal fitting 8 is screwed by the screw 10. Fix to 1.

[0006] the combustion stroke of the above manner set upright liquid fuel combustion apparatus is as follows. First, when a power switch (not shown) is turned on and the electric heater 2 is energized, the temperature of the vaporizing cylinder 1 required for vaporizing the fuel (about 250 ° C.
300 ° C). The temperature of the vaporizing cylinder 1 at this time is detected by the temperature detector 7, and the energization to the electric heater 2 is NO-OFF. When the preheating is completed in this way, combustion air is sent from the nozzle portion 11 into the vaporization cylinder 1, and the liquid fuel is extruded in a mist form from the needle pipe 12 by the blowing pressure of the combustion air, and is injected into the vaporization cylinder 1. Fuel and air are fed at a predetermined ratio.

The fuel sent into the vaporizing cylinder 1 is
It is vaporized by the heat inside and mixes with combustion air to produce a combustible gas mixture. Then, through the throttle unit 13 and the mixing plate 14 is transmitted to the bar Nahe head 3, where it is rectified flame port 4 through the wire net 5, ejected at a predetermined ejection pressure by the ignition means such as a discharge spark Ignited, primary combustion flame 17
And the secondary combustion flame 18.

[0008]

In the conventional liquid fuel combustion apparatus configured as described above, the fixing bracket 8 and the screw 10 are indispensable when the temperature detector 7 is mounted, so that the number of parts is large. The material cost is increased, and the assembling work is complicated and takes a long time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a liquid fuel combustion apparatus which reduces the number of parts, improves the workability of assembly, and reduces the production cost. I do.

[0010]

According to the liquid fuel combustion apparatus of the present invention , a projection is provided on the bottom of the vaporizing cylinder,
A concave portion is provided at a position corresponding to the convex portion on the
The detector is fitted in a state sandwiched between the convex part and the concave part,
When fixing the vaporizing cylinder to the table, fix it at the same time.
It is a thing.

[0011]

[Function] The temperature detector is connected to the projection on the bottom of the vaporizing cylinder and the table .
The vaporizing cylinder is clamped between the concave portion on the upper surface and the vaporizing cylinder is fixed to the placing table using the vaporizing cylinder fixing screw.

[0012]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention. The same parts as those in the conventional example of FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 1 denotes a vaporizing cylinder having an electric heater 2 embedded in a side surface portion, 19 denotes a convex portion provided on the bottom portion of the vaporizing cylinder 1, and 19 a denotes a hole provided in a central portion of the convex portion 19. Reference numeral 15 denotes a table on which the vaporizing cylinder 1 is placed, and a recess 15a having a through hole 15b at the center in the center of the upper surface.
Are formed.

Then, the convex portion 19 of the vaporizing cylinder 1 and the table 15
The recess 15a is fitted with a temperature detector 7 for detecting the temperature of the vaporizing cylinder 1 sandwiched therebetween, and is fixed with a vaporizing cylinder fixing screw 16. In addition, the lead wire of the temperature detector 7 is taken out from the lower part and led to the outside.

Next, the operation of the present invention configured as described above will be described. And have up for assembly of the liquid fuel combustion apparatus, in applying take temperature detector 7 is first placed in the recess 15a of the cradle 15 the temperature detector 7. At this time, both wing portions of the temperature detector 7 are placed on a flat portion in the concave portion 15a, and the lower portion is inserted into the through hole 15b of the concave portion 15a.

In this state, when the convex portion 19 of the vaporizing cylinder 1 is fitted and mounted on the concave portion 15a of the mounting table 15, the temperature detector 7
Is fitted into a hole 19a provided in the projection 19 of the vaporization cylinder 1. In this way, when the screws 16 for fixing the vaporizing cylinder are screwed together and the bottom surface of the vaporizing cylinder 1 is fixed to the placing table 15, the temperature detector 7 is also fixed at the same time. Note that the combustion process of the liquid fuel combustion device assembled as described above differs from the conventional example (except that the position of the temperature detector 7 that detects the temperature of the vaporization cylinder 1 when the liquid fuel burns is different). Since it is the same as the case shown in FIG. 2), the description is omitted.

In the above description, when the temperature detector 7 is sandwiched, it is shown that the temperature detector 7 is fitted into the hole 19a of the convex portion 19 provided in the vaporizing cylinder 1 and the through hole 15b of the concave portion 15a provided in the mounting table 15. However, the present invention is not limited to this, and any suitable shape of the temperature detector 7 can be used as long as it can be sandwiched between the convex portion 19 and the concave portion 15a.

[0017]

As is clear from the above description, the liquid fuel combustion apparatus according to the present invention has a projection on the bottom of the vaporizing cylinder.
As well as a recess at the position corresponding to the protrusion on the top of the table.
Part was provided, and the temperature detector was sandwiched between the convex part and the concave part.
Fitting in the state, it is fixed at the same time when the vaporizing cylinder is fixed to the pedestal, so it is possible to omit parts materials such as fixing brackets and screws that were conventionally used when attaching the temperature detector, The assembly workability can be improved, and the manufacturing cost can be further reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing an example of a conventional liquid fuel combustion device.

[Explanation of symbols]

1 vaporization cylinder, 3 burner head, 6 flame holding ring, 7
Temperature detector, 15 table, 16 vaporization cylinder fixing screw.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 60-81433 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F23N 5/14

Claims (1)

(57) [Claims] 1. A vaporizing cylinder that vaporizes a liquid fuel and mixes it with combustion air to generate a combustible gas mixture, a temperature detector that detects a temperature of the vaporizing cylinder, and a combustion flame provided at an upper portion of the vaporizing cylinder. In a liquid fuel combustion device having a burner head that forms a gas turbine, and a mounting table provided at a lower portion of the vaporizing cylinder for mounting and fixing the vaporizing cylinder, a convex portion is provided on a bottom surface of the vaporizing cylinder,
A concave portion is provided at a position corresponding to the convex portion on the upper surface of the table,
In a state where the temperature detector is sandwiched between the convex portion and the concave portion,
At the same time as fitting and fixing the vaporizing cylinder to the table
A liquid fuel combustion device characterized by being fixed .