JPS60194215A - Air flow spray type rotary burner - Google Patents

Abstract

PURPOSE:To contrive complete burning by a method wherein an oil is rotated at high speed under sucking and spraying operation, and a secondary air is generated. CONSTITUTION:A fuel oil is introduced into a fuel pipe 2 which is an inner cylinder of a concentric double rotary cylinder, and a high pressure gas is introduced into a high pressure air cylinder 1 which is an outer cylinder of said concentric double rotary cylinder. Nozzles 5, 6 are arranged in parallel so that the top end parts of both cylinders are faced each other with certain angle. A secondary air is supplied with a fan 3 fixed to the high pressure air cylinder 1, rotated at high speed with a motor 4. Thereby, the fuel oil is spouted out in a high speed air flow from the nozzle 5. The finely divided fuel oil is evenly distributed in the high speed primary air flow, a part of the fuel oil is vaporized, the burning is started instantaneously at the ignition, a flame is made in cone- shaped manner due to the high speed rotation, then the fuel oil is burnt completely by the secondary air supplied with the fan 3. The secondary air quantity can be adjusted voluntarily by the structure of an air damper 9, accordingly, the air ratio can be controlled sufficiently.

Description

Detailed Description of the Invention There are two types of burners currently in use: evaporative type and atomizing type. However, evaporative type burners are limited to fuel oil and distilled oil such as kerosene, light oil, and diesel oil. It is only used in some products, and in most cases, a spray type is used.

Spraying types include (1) hydraulic type, (2) rotary type, and (3) air spray type, each of which has its own patent. (Hydraulic burner No. 11 is a type that pressurizes the fuel oil itself and atomizes it by applying a swirling flow to the oil using a spiral chamber. This has a simple structure, but it requires high pressure (5 ~ 20 yen J) is required, and if it is less than 5 or the viscosity of the fuel oil is high, the atomization will be poor (
Become. The rotary burner (2) uses the centrifugal force of the rotating body to disperse and atomize the oil, and the oil amount can be adjusted over a wide range, making it easy to respond to changes in load. 3
00 microns, and the excess air ratio is about 1.25, which means that the burner efficiency is low. In addition, the higher the viscosity of the fuel oil, the worse the atomization, so the fuel oil is limited to B heavy oil. The air spray type burner (3) is a type that atomizes by being sucked into a high-speed air stream of high-pressure air stream (2-7~) of air or steam, and this burner can sufficiently atomize even if the viscosity of fuel oil is high. can.

Since the amount of air or steam used for atomization is small, there is little excess air and there are advantages in that burner efficiency is high, but there is a disadvantage that the spray angle is narrow at about 30 degrees. As mentioned above, each of the currently used burners has their own patents, but the burner according to the present invention is an epoch-making invention that combines the advantages of both the rotary type and the air spray type. That is, the basic idea is that the rotating shaft is a double concentric hollow body, fuel oil is fed into the inner hollow shaft, high-pressure gas is fed into the outer hollow shaft, and high-speed air or gas is fed into the nozzle provided at the shaft end. There is also a fan fixed to the Kazutomo rotating shaft that generates a water vapor flow, which draws in oil from the fuel oil nozzle that opens to the maximum suction effect of this air flow, and atomizes it while rotating at high speed with a motor to create a conical frame. At the same time, as a result of high-speed rotation, secondary air is generated, which results in complete combustion.

Next, the present invention will be explained with reference to the drawings. Fig. 1 is a cross-sectional view showing one embodiment of the present device. 1 is rotatably held via bearings 10, 10' and 11. An inner lid 15 having a high-speed air flow nozzle 6 and a refueling nozzle 5 is fixed to the front part of the high-pressure air cylinder 1, and a secondary air fan 3 is fixed to the center part with a mounting screw 18.

The rear part is connected to the oil pipe 11 via a rotary coupler 19, and a vent hole 17 is provided in front of the oil pipe 11 to take in high pressure air filling the air chamber 13. Also, there is a fuel pipe 2 inside, and the rear part is screwed to the tail end of the high-pressure air cylinder 1, and a rotating coupler 19 is attached to the core part.
Fuel oil is supplied from the fuel supply pipe 11 through the fuel supply pipe 11. Furthermore, the front part is screwed onto a path leading to a fuel nozzle 5 provided on the dome 15, forming a fueling path.

At the rear of the main body 16 is a high pressure air pipe 12. is screwed on to forcefully feed high pressure air or steam to the high pressure air cylinder 1. The pumped high-pressure air or steam reaches the high-pressure air chamber 13, and then passes through the high-pressure air supply port 17 and is discharged as a high-speed airflow from the high-pressure air nozzle.

A fan 3 for secondary air is firmly attached to the central part of the length of the high-pressure air cylinder with screws 18, and rotates together with the high-pressure air cylinder 1.

The air flow generated by this rotation is guided by the casing 7 to the secondary air port 8 to support combustion.

There is a secondary air intake port 20 on the back of the casing 7 from which secondary air is taken in, but there is an air damper 9 to adjust the amount of intake air so that combustion is always performed at the optimum air ratio. ing.

In order to generate rotation of this rotating part, a motor 4 is attached coaxially with the high pressure air cylinder 2, and the motor 4 rotates at a speed of 1,450 to 36 mph per minute.
The structure allows the rotating parts to rotate at a high speed of 00 revolutions.

To further explain the function of the present invention in detail, high-pressure air or steam is supplied to the high-pressure air cylinder 1 which is rotated by the motor 4 through the high-pressure air pipe 12, the high-pressure air chamber 13, the ventilation hole 17, and the high-pressure air nozzle. It is released as a high-speed air stream, but a mechanical seal is used to prevent air from entering the high-pressure air chamber 13 during the process.

The fuel oil is fed at low pressure from the oil supply pipe 11 to the fuel pipe 2 via the rotary coupler, and is discharged into the high-speed airflow from the oil supply nozzle 5 which is open to the suction part of the high-speed airflow. Fuel oil is atomized using the principle of atomization, and is evenly distributed in the primary air of high-speed airflow, with some of it turning into steam, creating optimal conditions for the start of combustion.

When this is ignited by an electric spark, it starts burning instantly, but because it rotates at high speed, the fire forms a conical flame.

Since the amount of high-speed secondary air for atomization is not sufficient to support combustion, complete combustion is achieved by secondary air sent from fan 3. Since the secondary air amount can be arbitrarily adjusted by the air damper 9, the air ratio can be sufficiently controlled.

In addition, when using steam for high-speed airflow, although it does not support combustion as secondary air, the steam itself has a large enthalpy, and the fuel oil is gasified at the same time as the spray, and the flame propagation velocity is also high, similar to gas fuel. Effective combustion can be continued using only secondary air.

As described above, the present invention combines the advantages of the rotary burner and the air spray burner, and as a result, the disadvantages of the rotary burner, such as excessive air, reduced combustion efficiency, and inability to use high viscosity fuel, are improved, and the advantages of the air spray burner are improved. As a result of simultaneously solving the drawback of the narrow spray angle, a highly efficient high-load burner was developed, which is an extremely effective invention.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of one embodiment of the present invention. 1: Fuel pipe 2: High pressure air cylinder 3: Fan 4: Motor 5: Refueling nozzle 6: High speed air flow nozzle 7: Casing 8: Secondary air port 9: Air damper 10,10
: Rear bearing 11: Front bearing 12: Oil pipe 13: High pressure air pipe 14.14: Mechanical seal 15: Circle Lid 1
6: Main body 17: Ventilation hole 18: Fan mounting screw 19
: Rotating coupler 20: Air intake port 21: Air chamber A:
High-pressure gas B: Fuel oil patent applicant Masu Yamamoto Otate continuation amendment Written April 23, 1980 Commissioner of the Japan Patent Office 1, Indication of the case
Patent application No. 2 filed on March 14, 1981, name of the invention Air-spray rotary burner 3, relationship with the case by the person making the amendment Patent applicant 4, date of amendment order (not issued spontaneously) Drawings are from the original application Write the text ``Figure 1'' on the drawing, and then add Figure 2. Attachment 1, from page 3, line 12 of the specification to line 5 from the bottom of page 5 are deleted, and the following sentence is inserted. "Next, to explain the present invention with reference to the drawings, FIG. 1 is a sectional view showing one embodiment of the present invention. A cylinder 2 is rotatably supported by bearings 10, 10, and 11. This high-pressure air cylinder 2 has a high-speed air flow nozzle 6 and a fuel nozzle 5 in its front part, has an oval cover 15 fixed thereto, and has a length. A secondary air fan 3 is fixed in the center of the housing with fan mounting screws 18.The rear part is connected to the oil pipe 12 via a rotary coupler 19, and in front of it, a plurality of ventilation holes 17 are provided. A donut-shaped air chamber 21 is formed between the fuel pipe 1 and the outer wall of the main body 16.The rear part of the fuel pipe 1 is screwed onto the tail end of the high-pressure air cylinder 2, and a rotary coupler attached to the core part is screwed onto the tail end of the high-pressure air cylinder 2. Fuel oil is supplied from a fuel supply pipe 12 through a fuel supply pipe 19.Furthermore, the front end of the fuel pipe 1 is screwed onto a dome 15, and the fuel is sprayed through a fuel supply nozzle 5.This fuel supply Nozzle 5 is L
It is bent into a letter-shaped hole and opens directly above a high-speed airflow nozzle 6, which will be described later. A high pressure air pipe 13 is installed on the side wall of the air chamber 21 at the rear of the main body 16.
is screwed on, and high-pressure air or steam is pumped through this. These high-pressure gases A reach the air chamber 21, pass through the vent 17, and are discharged from the high-pressure airflow nozzle 6 as a high-speed airflow. The front part of the high-pressure air cylinder 2 is housed in a casing 7, and the central part is directly connected to a motor 4 housed in a main body 16. Airflow is directed to secondary air ports 8 to support combustion. A plurality of air intake ports 20 are provided at the back base of the casing 7.
A hole is provided, and an air damper 9 is attached to the outside of the hole so that the amount of air can be freely adjusted. The motor 4 is attached coaxially with the high pressure air cylinder 2 and has a speed of 145 per minute.
It is driven at 0-3600 rotations. Next, to explain the operation of the present invention in detail, high pressure gas A is pressurized into the high pressure air cylinder 1 whose rotation is supported by the motor 4 through the high pressure air pipe 13, passes through the air chamber 21 and the ventilation hole 17, and then enters the high pressure air flow nozzle 6. However, in order to prevent air leakage from the air chamber 21 on the way, the mechanical seal 14° fuel oil is sent from the oil supply pipe 12 to the fuel pipe 1 via the rotary coupler 19 at low pressure, and the fuel oil is released as a high-speed airflow. 2. Insert the following sentence between page 6, line 14, ``...can be done.'' and line 15. [FIG. 2 is a cross-sectional view of the nozzle part showing another embodiment of the present invention, and the remarkable feature compared to FIG. The high-speed airflow nozzle B is centrally perforated from the periphery of the back surface of the dome, and is opened near the opening of the refueling nozzle 5. In this case, the refueling nozzle 5 opens straight in the direction of the furnace, so there is an advantage that there is little resistance and particularly good spray can be obtained when using fuel with high viscosity. 3. Next to "Cross-sectional view of" on page 7, line 4 of the specification. Insert j. 4. The claims on page 1 of the specification are corrected as shown in F. ``The cylinder of the concentric double rotating part is the fuel pipe 1, and the outer cylinder is the high-pressure air cylinder 2. Fuel oil and high-pressure gas are introduced into each cylinder, and the refueling nozzle 5 is installed so as to face the tips of both cylinders at a certain angle. and an air-spray rotary burner that drives the high-speed air-flow nozzle 6 to produce combustion.'', Otsu-Otsu Z

Claims (1)

[Claims] The inner cylinder of the concentric double rotating part is used as a fuel pipe 2, into which fuel oil is introduced, and the outer cylinder is used as a high-pressure air cylinder 1, into which high-pressure gas is introduced. 6
The rotary burner is an air spray type rotary burner which has a structure in which secondary air is supplied by a fan 3 fixed to a high-pressure air cylinder 1, which is rotated at high speed by a motor 4 for combustion.