JPS643945Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a liquid fuel vaporization burner, that is, a type of burner that gasifies and burns liquid fuel such as kerosene.

(Prior Art) Conventionally, most burners that spray kerosene from a fuel nozzle and burn it have a combustion section consisting of a burner cone and a flame holder (forms and mounting positions vary) in front of the fuel nozzle. It is designed so that the gasified fuel can be burned efficiently. In order to achieve good combustion conditions in the combustion section, the shape of the burner cone and the flame holder, the relationship between the front and rear mounting positions, and the installation of these parts to the surrounding flange pipes and mounting walls are important. It is important that each member is positioned concentrically with the fuel nozzle opening.

However, the conventional method for attaching burner cones and flame holders is to attach the flame holder to the inner peripheral surface of the burner cone via a mounting bracket, and then attach the burner cone to the surrounding flange pipe or mounting wall. Moreover, since the individual members are attached separately, it is difficult to align the axis of each member with the central axis of the fuel nozzle opening.

(Purpose of the invention) The purpose of this invention is to accurately mount each component of the combustion section (in this invention, the burner cone, current plate, and flame holding ring) coaxially with the central axis of the fuel nozzle port, and to facilitate the installation work. It is to become

(Structure of the invention) The liquid fuel vaporizing burner of the invention includes a burner cone disposed in front of a fuel nozzle, a baffle plate that fits into the front part of the burner cone with a circumferential gap, and a baffle plate that fits in the front part of the burner cone with a circumferential gap. The burner cone has a flame holding ring disposed at the front, and a mounting tube fixed to the mounting wall around the fuel nozzle is fitted to the rear end of the burner cone, and a plurality of positioning protrusions are provided on the circumferential surface of the mounting tube. A plurality of positioning and locking protrusions are formed on the outer periphery of the current plate, and a plurality of positioning and locking parts are provided on the periphery of the flame-holding ring. A connecting rod having a U-shaped cross section is installed across the three parts, the rear end of this connecting rod is fitted and secured to the positioning convex part of the mounting tube, and the front end of the rod is fitted with a fitting part and inserted. The fitting part is fitted and locked into the positioning and locking protrusion of the current plate, and the insertion piece is inserted and locked into the positioning and locking part of the flame holding ring. .

(Function) The plurality of connecting rods has an insertion piece at the front end that is locked to a positioning locking part on the periphery of the flame-holding ring, and a rear end that is secured to a positioning convex part on the periphery of the mounting cylinder. The flame stabilizing ring is coaxially fixed to the mounting tube at a predetermined distance, and a current plate and a burner cone are sandwiched between the two. The rectifier plate is fixed by fitting the positioning locking protrusion on its outer periphery into the fitting part of the connecting rod, and the rear end of the burner cone is fitted and supported by the mounting tube, so that both of them are fixed. It is arranged coaxially with the central axis of the fuel nozzle opening.

(Embodiment) An embodiment of the present invention will be described based on the drawings. In the figure, A is a burner main body, and an air outlet 13 is opened in the mounting wall 6 on the front side of the main body A. A fuel nozzle 1 is provided facing forward. High-speed air is sent from a blower fan 14 to the air outlet 13, and kerosene from a combustion tank 15 is sent to the fuel nozzle 1 via a pump 16. A combustion section B is disposed in front of the fuel nozzle 1, and is surrounded by a flange pipe 17 attached to the front surface of the burner body A. or,
The front end of the combustion part B and the electromagnetic pipe 17 is the combustion chamber C.
It penetrates the side wall 18 of the combustion chamber C and projects into the combustion chamber C.

The combustion section B includes a burner cone 2, a current plate 4, and a flame holding ring 3. The burner cone 2 consists of an inner cylinder made of ceramic and an outer cylinder made of ceramic fiber, and is formed into a conical tube shape that extends forward in a widening manner, and a straight fitting part is provided at the rear end to which the mounting cylinder 5 is fitted. wear. The mounting tube 5 is formed into a short cylindrical shape, and a narrow strip-shaped mounting bracket 20 with a locking convex portion in the center is attached to the circumferential surface of the mounting tube 5 so as to face rearward.
It is fastened at three locations at 120° intervals, and its tip part is bent in the axial direction to form a mounting piece 21, and the fastening part to the circumferential surface is fitted with the rear end of the connecting rod 10, which will be described later. A positioning convex portion 7 is used for fixing. The mounting piece 21 at the rear end of the mounting bracket 20 is bolted to a predetermined location on the mounting wall 6 around the fuel nozzle 1.
The mounting tube 5 is mounted coaxially with the fuel nozzle 1.

Further, a current plate 4 is provided at the front end opening of the burner cone 2. The current plate 4 is made of ceramic similar to the burner cone 2, and is formed into a substantially hemispherical shape with a slightly smaller diameter than the diameter of the front end of the burner cone 2, and has three positioning locking protrusions at 120° intervals on its outer periphery. 8 and drilling an appropriate number of holes 22,
It is installed coaxially with the burner cone 2 with the convex surface facing inward toward the front end opening of the burner cone 2. At this time, the rear surfaces of the positioning and locking protrusions 8 of the rectifier plate 4 are respectively fixed at predetermined positions on the front end surface of the burner cone, and the distance between them and the burner cone 2 in the front-rear direction is maintained at a predetermined distance. That is, the distance from the burner cone 2 in the longitudinal direction is determined by the thickness of the positioning locking protrusion 8. Further, an appropriate gap is formed between the outer periphery of the baffle plate 4 and the burner cone 2 to form an air flow path 19.

A flame-holding ring 3 made up of an inner ring 3a and an outer ring 3b fitted is disposed in front of the current plate 4 at an appropriate interval. On the periphery of the ring 3, there are three positioning locking parts 9 that protrude rearward at 120° intervals like the positioning protrusions 7 and the positioning locking protrusions 8.
At the same time, a locking hole 24 is formed in the bent portion, and the abutting portion 23 is used as a positioning locking protrusion of the rectifier plate 4 by bending the tip of each in the axial direction to form a contact portion 23. 8. Bring it into contact with the front.

Then, a connecting rod 10 is installed between the positioning locking part 9 of the flame stabilizing ring 3, the positioning locking protrusion 8 of the rectifier plate 4, and the positioning protrusion 7 of the mounting tube 5, and the connecting rod 10 is installed between the rectifier plate 4 and the burner cone 2. is held between the flame-holding ring 3 and the mounting tube 5.

The connecting rod 10 is formed by bending a rod-shaped body having a U-shaped cross section with the concave groove side facing the axis and along the outer surface of the burner cone 2, and has a step-shaped insertion at the front end. A fitting method in which a piece 11 is formed, two small pieces are provided on both sides of the rear part of the insertion piece 11 and stand up toward the axis, and the positioning and locking protrusion 8 of the rectifier plate 4 is fitted and locked between them. 12, and an elongated hole 25 for a set screw is bored in the rear end of the rod 10.

When attaching the connecting rod 10, insert the insertion piece 11 at the front end into the locking hole 24 of the positioning locking part 9 of the flame-holding ring 3, lock it, and straighten the flow to the fitting part 12. After fitting the positioning locking protrusion 8 of the plate 4,
The rear end portions are respectively fitted into the positioning convex portions 7 on the circumferential surface of the mounting tube 5 and fixed using set screws.

At this time, by installing a connecting rod 10 between the positioning locking part 9 and the positioning convex part 7 attached at the same angular position on the circumferential surfaces of the flame-holding ring 3 and the mounting tube 5, both 3, 5 are precisely fixed coaxially at predetermined intervals. The burner cone 2 is fitted and held in the mounting tube 5, and the rectifier plate 4 connects the positioning locking protrusion 8 to the fitting part 12 of the connecting rod 10 in the above state.
The burner cone 2, the current plate 4, and the flame-holding ring 3 are securely fitted and locked from the outer circumferential side, and the burner cone 2, the current plate 4, and the flame-holding ring 3 are all fixed coaxially with the fuel nozzle 1.

In addition, to explain the state during combustion, ventilation fan 1
The high-speed air from 4 is injected into the burner cone 2 from the air outlet 13 on the front side of the burner body A, and at the same time, kerosene is sprayed from the fuel nozzle 1, mixed with the above air and gasified. to the mixture,
The fuel is ignited by an igniter 26 located close to the fuel nozzle 1. The combustion gas is released from the gap around the outer periphery of the rectifying plate 4 and also from the numerous perforations 22, and is completely combusted with a blue flame in the 3 parts of the flame holding ring.

(Effect of the invention) By constructing a plurality of connecting rods between the positioning locking part on the periphery of the flame-holding ring and the positioning convex part on the circumference of the mounting tube, the three parts of the flame-holding ring, the mounting pipe, and the connecting rod can be The burner cone and baffle plate are securely fixed around the axis, and the flame holding ring, baffle plate, and burner cone can be fixed coaxially with the fuel nozzle because the burner cone and baffle plate are securely held by the mounting tube and connecting rod in the above state. , Therefore, complete combustion of combustion gas can be achieved.

The flame-holding ring, rectifying plate, burner cone, and mounting tube are assembled to each other in a locking and fitting manner, and the number of screwed parts is reduced, making the installation work extremely simple.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a burner embodying the present invention, Fig. 2 is an exploded perspective view showing the main components constituting the combustion section, Fig. 3 is a sectional view taken along line X-X in Fig. 1, and Fig. 4. 1 is a sectional view taken along the Y-Y line in FIG. 1, and FIG. 5 is a sectional view taken along the Z-Z line in FIG. In the figure, A...Burner body, B...Combustion part, 1
...Fuel nozzle, 2...Burner cone, 3...
Flame holding ring, 4... Current plate, 5... Mounting tube, 6...
...Mounting wall, 7...Positioning protrusion, 8...Positioning locking protrusion, 9...Positioning locking portion, 10...Connecting rod, 11...Insert piece, 12...Fitting part.

Claims (1)

[Scope of utility model registration request] The burner cone includes a burner cone disposed in front of the fuel nozzle, a rectifying plate that fits into the front part of the burner cone with a circumferential gap, and a flame-holding ring disposed in front of the rectifying plate. A mounting tube fixed to the mounting wall around the fuel nozzle is fitted to the rear end of the cone, a plurality of positioning protrusions are provided on the circumference of the mounting tube, and a plurality of positioning locks are provided on the outer periphery of the rectifier plate. A protrusion is formed, a plurality of positioning locking parts are provided on the periphery of the flame holding ring, and a connecting rod having a U-shaped cross section is installed across the burner cone, the current plate, and the flame holding ring, The rear end of the connecting rod is fitted and secured to the positioning convex part of the mounting tube, and the front end of the connecting rod is provided with a fitting part and an insertion piece,
The liquid fuel vaporizing burner is constructed by fitting and locking the fitting portion into the positioning and locking protrusion of the rectifying plate, and inserting and locking the insertion piece into the positioning and locking portion of the flame-holding ring.