JPS6039604Y2 - Atomization burner device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an atomizing burner device used in hot air heaters and the like.

Some burner devices of this type include a horizontal cylindrical burner body with an atomizer, that is, a rotating cup that rotates at high speed, which sprays liquid fuel such as kerosene, which is then gasified and combusted.

At the beginning of combustion, the gasification of the fuel is insufficient, so oil remains inside the burner body, so a drain pipe is led out from the burner body, and its tip is immersed in the oil in the fuel reservoir. Undrained oil is discharged and removed through this pipe.

Furthermore, exhaust gas from combustion within the burner body passes through a heat exchanger and the like and is discharged outdoors through an air supply and exhaust pipe inserted into the wall of the house.

The pressure within the burner body is maintained slightly above atmospheric pressure and therefore acts within the drain pipe.

However, the tip of the drain pipe is immersed in the oil in the fuel storage section, and as a result, the above pressure is stopped due to the head pressure of the oil, preventing unburned gas from inside the burner body from leaking into the room. do not have.

However, when a large headwind acts around the supply and exhaust pipe that is open to the outdoors, the pressure inside the burner body increases abnormally due to the backwind pressure, and as a result, the oil head pressure mentioned above cannot counteract it. There was a problem in that unburned gas inside the burner body leaked into the room and caused problems such as strange odors.

This idea was developed with this in mind, and its purpose is to reliably prevent the leakage of unburned gas even if the pressure inside the burner increases abnormally due to headwinds, etc. An object of the present invention is to provide an atomization type burner device that can perform the following.

An embodiment of this invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a burner main body, which is composed of an inner cylinder 2 and an outer cylinder 3 arranged concentrically overlapping each other, and an air passage 1a is formed between the circumferential surfaces of these cylinders 2 and 3.

A fan casing 4 is attached to one end of the burner body 1, and a motor casing 5 is further provided at one end of the fan casing 4.

A motor 6 is provided inside the motor casing 5, and a rotating shaft 7 of the motor 6 passes through the fan casing 4 and connects to the inner cylinder 2.
It is coming within.

Fan casings 8, 8 are provided within the fan casing 4, and these fans 8, 8 are fixed to the rotating shaft 7.

Further, an end plate 9 is provided on the end surface of the fan casing 4,
This end plate 9 is hermetically joined to the end surface of the inner cylinder 2.

A vaporizing cup 10 is attached to the center of the end plate 9, and consists of a bottomed cylindrical main body 10a and a cup cover 10b provided at the opening of the main body 10a.

The main body 10a and the cup cover 10b are connected via a pin 11, and a slight gap is secured between them, and this gap forms a jet groove 12 on the circumferential side of the vaporizing cup 10. .

The tip of the rotating shaft 7 faces into this vaporizing cup 10, and a bottomed cylindrical rotating cup 1 is attached to this tip as a sprayer.
3 is attached, and this rotary cup 13 has its opening 13a
is directed inward of the main body 10a.

A large number of air holes 9a are formed on the peripheral side of the end plate 9, and the inside of the fan casing 4 and the air passage 1a communicate with each other through these air holes 9a. In addition, a large number of small holes 16 are bored in the circumferential surface on the forward side of the inner cylinder 2, and the air passage 1a and the inside of the inner cylinder 2 are connected through these small holes 16. It's communicating.

A pilot ring 17 and a frame holder 18 are arranged inside the inner cylinder 2 on the forward side.

Further, a discharge hole 19 is formed in the circumferential bottom surface of the inner cylinder 2 located directly below the vaporizing cup 10, and this discharge hole 19 is open to the air passage 1a.

Furthermore, an ignition heater 21 is disposed on the circumferential surface of the inner cylinder 2 adjacent to the discharge hole 19 .

As shown in FIG. 2, this ignition heater 21 avoids being directly under the vaporizing cup 10 and is offset from that position in the circumferential direction of the inner cylinder 2.

An ignition sheet 22 is provided above the discharge hole 19 and the ignition heater 21 so as to span over both.

The ignition sheet 22 is made of a material with excellent heat resistance and liquid permeability.

A saucer 2 is provided on the inner bottom surface of the outer cylinder 3, facing the discharge hole 19.
3 is provided, and a drain pipe 25 is connected to the bottom surface of this saucer 23 via a joint 24.

Reference numeral 26 denotes an oil pan constituting a fuel storage section, and this oil pan 26
A cartridge type fuel tank 27 is provided on the top surface of the
The oil pan 2 is replaced by air from the tank 27.
Liquid fuel is sequentially supplied into the tank 6 while maintaining a constant level.

The drain pipe 25 is immersed in the oil in this oil pan 26.
The tip of the is inserted.

Further, an oil supply pipe 29 is led out from the oil receiving tray 26 via an electromagnetic pump 28 , and the tip of this oil supply pipe 29 is inserted into the rotary cup 13 .

Next, the effect will be explained.

When the combustion operation is turned on, the motor 6 is first started, and the fans 8, 8 and the rotary cup 13 are rotated at high speed.

Then, fuel is sequentially supplied dropwise into the rotary cup 13 through the fuel supply pipe 29 by activation of the electromagnetic pump 28.

This fuel is sprayed onto the inner circumferential surface of the vaporizing cup 10 by the centrifugal force of rotation of the rotating cup 13, but since the vaporizing cup 10 is at a low temperature at this point, the fuel condenses again and spreads over the inner circumferential surface of the vaporizing cup 10. It passes through and drips from the spout groove 12.

An ignition sheet 22 is provided directly below the vaporization cup 10, and therefore the fuel drips onto and permeates into this ignition sheet 22.

Then, a part of the fuel is further diffused into the ignition sheet 22 by capillary action, reaches the vicinity of the ignition heater 21 which is waiting to become red hot, and is ignited by the ignition heater 21, causing ignition.

The other surplus fuel that has penetrated into the ignition sheet 22 drips sequentially from the ignition sheet 22 toward the discharge hole 19, flows from the discharge hole 19 into the drain pipe 25 via the saucer 23, and
Further, the oil is discharged into the oil receiving tray 26 through the drain pipe 25.

The ignition flame of the ignition sheet 22 gradually intensifies and heats the vaporizing cup 10.

As a result, the temperature of the vaporization cup 10 rises, and as the temperature rises, the fuel sprayed from the rotary cup 13 gradually vaporizes, and finally all of the fuel is vaporized at the same time as the spray S′, and the vaporization cup 10 The inside is filled with vaporized gas, and its pressure increases.

As the pressure increases, the vaporized gas is vigorously ejected from the ejection groove 12 toward the inner circumferential wall surface of the inner cylinder 2.

On the other hand, due to the rotation of the fans 8, 8, the combustion air passes through each air hole 9a..., air path 1a, and each small hole 16...
... is ejected into the inner cylinder 2.

Then, this fuel air is mixed with the above-mentioned vaporized gas, and steady combustion starts around the pilot ring 17 and frame holder 18 and continues thereafter.

By the way, if the pressure inside the inner cylinder 2 increases abnormally due to air blowing or the like, the unburned gas inside will flow out from the exhaust hole 19 into the air passage 1a.

The air passage 1a is a wide space along the outer periphery of the inner cylinder 2, and therefore, as unburned gas flows out there, the pressure inside the inner cylinder 2 quickly decreases.

The unburned gas that has flowed into the air passage 1a is mixed with the combustion air that is sequentially supplied into the air passage 1a, and is ejected into the inner cylinder 2 from each small hole 16. Burn.

In the above embodiment, a saucer is formed on the bottom surface of the inner periphery of the outer cylinder, and the drain pipe is connected to the bottom of the saucer. However, the saucer is not necessarily required. A funnel-shaped recess may be formed on the inner bottom surface, and a drain pipe may be connected to this recess.

As explained above, according to this invention, on the circumferential bottom surface of the inner cylinder,
Because we formed a discharge hole that opens to the air passage on the outer circumference side,
Even if the pressure inside the inner cylinder rises abnormally due to a headwind, etc., the unburned gas inside will only flow out into the air passage through the above-mentioned exhaust hole, and therefore, leakage of unburned gas into the room can be reliably prevented. Further, since the unburned gas that has flowed out into the air passage flows back into the inner cylinder together with the combustion air and is combusted, there is no reduction in the amount of combustion, which is economically advantageous.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, with FIG. 1 being a cross-sectional view of the overall structure, and FIG. 2 being a cross-sectional view of the burner body. 1... Burner body, 1a... Air path,
2...Inner cylinder, 3...Outer cylinder, 13...
...Rotating cup (sprayer), 16...Small hole,
19...Drain hole, 25...Drain pipe, 26...Oil pan (fuel storage [:).

Claims (1)

[Scope of utility model registration request] A burner body having an inner cylinder and an outer cylinder overlapped with each other to form an air passage between their circumferential surfaces, and a burner body having a plurality of holes drilled in the circumferential surface of the inner cylinder to blow air into the inner cylinder to be blown into the air passage. a small hole, a sprayer for spraying liquid fuel into the inner cylinder for combustion, a discharge hole formed in the circumferential bottom surface of the inner cylinder and opening into the air passage, and a discharge hole connected to the circumferential surface of the outer cylinder. An atomizing burner device comprising: a drain pipe that guides unburned oil discharged from the discharge hole to a fuel storage section.