JP2559919Y2 - Oil hot air heater - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to an oil hot air heater.
More specifically, a plurality of burner heads are provided, and a combustion cylinder is disposed above each of the burner heads.
And a petroleum hot air heater to which a second heat exchanger is connected.

[0002]

2. Description of the Related Art A conventional oil hot air heater will be described with reference to the drawings. 10 and 11, reference numeral 11 denotes a main body casing, and a combustion chamber 12 is formed below the main body casing 11. A fuel tank 14 is provided beside the combustion chamber 12, and an auxiliary tank 15 is provided below the fuel tank 14. An oil pump 16 is attached to the auxiliary tank 15, and one end of an oil pipe 17 is connected to the oil pump 16.

[0003] Inside the combustion chamber 12, a carburetor 18 is provided on the lower side.
Is connected, and a gas injection nozzle 19 is additionally provided. A mixing pipe 20 is provided in front of the gas injection nozzle 19, and a burner 4 is provided above the mixing pipe 20.
The burner 41 is connected to one end opening of the mixing tube 20. 12 and FIG.
As shown in FIG. 3, a plurality of burner heads 42 formed by a plurality of flame holes 42a and having a diameter smaller than a diameter of a combustion cylinder 53 described later are formed.

[0004] Above the individual burner heads 42, combustion cylinders 53 are arranged to face each other. The upper part of the combustion cylinder 53 is connected to a flat first heat exchanger 54 provided on the upper part of the main body casing 11, respectively.
Further, the first heat exchanger 54 is arranged on the side of the combustion tube 53 and is connected to a plurality of second heat exchangers 55 having an exhaust resistance plate 57 inside. In addition, the second heat exchanger 5
An exhaust pipe 56 is connected to an end opposite to the end connected to the first heat exchanger 54, and the exhaust pipe 56 is led out to the rear side of the main casing 11. Further, the combustion tube 53, the first heat exchanger 54, and the second heat exchanger 55
A hot air blower 27 is disposed behind the air conditioner.

[0005]

In the above-described petroleum hot air heater 50, all of the combustion tube 53, the first heat exchanger 54, and the second heat exchanger 55 are provided in order to increase the heat exchange efficiency. It is necessary to blow air from the hot air blower 27 to perform heat exchange. However, the second heat exchanger 55 is provided on the side of the combustion tube 53, and the hot air blower 27
Between the combustion cylinders 53 and the second heat exchangers 55 in order to blow the wind from the rear of the oil warm air heater 50 forward.
A part of the air is directly blown out from the space between the combustion cylinders 53 and from the space between the second heat exchangers 55 to the front surface of the oil warm air heater 50. However, the combustion exhaust gas is exhausted from the exhaust pipe 26 in a state where the wind from the hot air blower 27 is not sufficiently exchanged heat with the combustion exhaust gas, and there is a problem that heat loss increases.

Further, from the viewpoint of miniaturization of the oil warm air heater 50, the diameter of the combustion tube 53, the diameter of the second heat exchanger 55, and the combustion tube 53 and the second heat exchanger 55 are provided. When the shape of the combustion cylinder 53 and the second heat exchanger 55 is cylindrical, the contact time with the ventilation is short, and the heat exchange is not performed sufficiently. There has been a problem that the combustion exhaust gas is exhausted from the exhaust pipe 56 and heat loss increases.

Furthermore, the combustion exhaust gas is supplied to the second heat exchanger 5
When the fuel gas circulates to the place 5, the combustion exhaust gas causes a metallic noise (distortion noise) between the second heat exchanger 55 and the exhaust resistance plate 57 disposed inside the second heat exchanger 55. Was issued and there was a problem of giving discomfort.

Further, the flame burning in the upper part of the burner head 42 spreads in the space between the burner 41 and the combustion tube 53, so that the heat loss of the combustion heat of the combustion exhaust gas increases and some The lower wall of the combustion cylinder 53 and the upper wall of the combustion chamber 12 are glowed red by the flame, and the constituent materials of the combustion chamber 12 and the combustion cylinder 53 are damaged.

The present invention has been devised in view of the above-mentioned problems, and has been devised in consideration of the above-mentioned problems, and has improved heat exchange efficiency by reducing heat loss, is energy-saving, has no unpleasant noise, is comfortable, and has a long product life. It aims to provide a wind heater.

[0010]

In order to achieve the above-mentioned object, an oil hot air heater according to the present invention includes a plurality of burner heads, and a combustion cylinder is disposed above each of the burner heads. In a petroleum hot air heater in which first and second heat exchangers are connected to a combustion cylinder, the second heat exchanger is formed corresponding to the combustion cylinder, and the second heat exchanger is It is arranged behind and between the combustion cylinders , and
A hot air blower is provided behind the second heat exchanger .

Alternatively, in the above-mentioned oil warm air heater,
The first heat exchanger and the second heat exchanger are connected in one place, while the heat exchangers forming the second heat exchanger are connected in series, and the hollow flat It is characterized by being formed in a shape.

Further, in a petroleum hot air heater having a plurality of burner heads, a combustion cylinder is disposed above each of the burner heads, and the first and second heat exchangers are connected to the combustion cylinders. A flame holding ring is disposed on an upper outer periphery of each of the burner heads, and the flame holding ring is smaller than a diameter of the combustion cylinder.
It has a small diameter, and is further below the lower end of the combustion cylinder.
It is characterized in that the upper end of the flame holding ring is located .

[0013]

According to the above construction, a plurality of burner heads are provided, a combustion cylinder is disposed above each of the burner heads, and the first and second heat exchangers are connected to the combustion cylinders. In the hot air heater, the second heat exchanger is formed corresponding to the combustion cylinder, and the second heat exchanger is disposed behind the combustion cylinder and between the combustion cylinders. The air from the hot air blower passes between the combustion cylinders or between the second heat exchangers, so that sufficient heat exchange is not performed, and is blown directly to the front of the oil hot air heater. And all the wind from the hot air blower is directly blown to the combustion tube, the first heat exchanger, and the second heat exchanger, so that heat loss is reduced and heat exchange efficiency is reduced. Is improved. Further, the second
The hot air blower is located behind the heat exchanger.
The air blown by the blower for hot air is heated first.
Heat exchange through said second heat exchanger of relatively low degree
Then, heat is generated in the combustion cylinder, which is higher in temperature than the second heat exchanger.
Replaced and blown out to the front of the oil hot air heater
Therefore, heat exchange efficiency is improved. Further, the second heat exchanger
Is lower in temperature than the combustion cylinder,
When flowing to the second heat exchanger via the combustion tube,
The air exchanged in the combustion tube is released in the second heat exchanger.
Prevent heat or inefficient heat absorption
Can be.

[0014] Alternatively, in the above-mentioned petroleum hot air heater, the first heat exchanger and the second heat exchanger are connected in one place, while each of the heat exchangers constituting the second heat exchanger is connected. Since the sections are connected in series and are formed in a hollow flat shape, the contact area and contact time between the wind from the hot air blower and the second heat exchanger are increased, and the heat loss is reduced. , Heat exchange efficiency is improved. In addition, the second
No exhaust resistance plate is provided inside the heat exchanger, and when the combustion exhaust gas circulates to the second heat exchanger as in the prior art, a metallic sound (distortion sound) is generated by the exhaust resistance plate. I can't do that.

Alternatively, a plurality of burner heads are provided,
A combustion cylinder is disposed above each of these burner heads, and in a petroleum hot air heater in which the first and second heat exchangers are connected to the combustion cylinder, a flame holding ring is provided on an outer periphery above each of the burner heads. And the flame holding ring is larger than the diameter of the combustion cylinder.
Has a small diameter, and further below the lower end of the combustion cylinder
Since the upper end of the flame holding ring is located, the flame burning at the upper part of the burner head does not spread to the space between the burner and the combustion cylinder, and the loss of combustion heat of the combustion exhaust gas is reduced. At the same time, the lower wall of the combustion cylinder and the upper wall of the combustion chamber are glowed by a part of the flame to prevent the constituent materials of the combustion chamber and the combustion cylinder from being damaged, thereby extending the life of the parts.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a petroleum hot air heater according to the present invention. Note that components having the same functions as those of the conventional example are denoted by the same reference numerals.

FIG. 1 and FIG. 2 show an oil hot air heater according to the present invention. In the figure, reference numeral 11 denotes a main body casing, and a combustion chamber 12 is formed below the main body casing 11,
Behind the combustion chamber 12, a combustion blower 13 is provided. A fuel tank 14 is provided beside the combustion chamber 12, and an auxiliary tank 15 is provided below the fuel tank 14. The auxiliary tank 15 has an oil pump 16
The oil feed pump 16 has an oil feed pipe 17
Are connected at one end.

Inside the combustion chamber 12, a carburetor 18
Is provided, the carburetor 18 is connected to the other end of the oil feed pipe 17, and a gas injection nozzle 19 is additionally provided. Further, a mixing pipe 20 is provided in front of the gas injection nozzle 19, and a burner 21 is provided above the mixing pipe 20, and this burner 21 is connected to one end opening of the mixing pipe 20. . A plurality of flame holes 22a are formed in the burner 21, and a plurality of burner heads 22 having a diameter smaller than a diameter of a combustion cylinder 23 described later are formed.

Above the individual burner heads 22, combustion cylinders 23 are arranged facing each other. The upper portion of the combustion tube 23 is connected to a flat first heat exchanger 24 disposed above the main body casing 11, respectively.
Further, the first heat exchanger 24 is connected in series to each of the plurality of the second heat exchanger 2 5 located between the combustion cylinder 23 and combustion cylinder 23 a rear of the combustion liner 23 I have.
An exhaust resistance plate 29 is disposed inside the second heat exchanger 25, and is provided at an end of the second heat exchanger 25 opposite to the end connected to the first heat exchanger 24. Is the heat exchange box 2
8 are provided. The exhaust pipe 2 is provided in the heat exchange box 28.
6 is connected, and one end of the exhaust pipe 26 is led out to the rear surface side of the main casing 11. Further, a blower for warm air 27 is disposed behind the second heat exchanger 25,
The hot-air blower 27 is arranged such that the upper end of the blade is located above the first heat exchanger 24, and the center is located above the center of the second heat exchanger 25.

The oil warm air heater 10 constructed as described above
Is activated, the auxiliary tank 1
5. The liquid fuel supplied via the oil feed pump 16 and the oil feed pipe 17 is vaporized by the vaporizer 18 and injected from the gas injection nozzle 19 to the mixing pipe 20 as gas fuel. The injected gaseous fuel is mixed in a mixing pipe 20 with air sent by a combustion blower 13 disposed behind the combustion chamber 12, supplied to burners 21, and burned by each burner head 22. The combustion exhaust gas, which has been heated by the burner head 22 and has become high temperature, is collected in a first heat exchanger 24 via a combustion tube 23 disposed above each burner head 22, and further collected in a second heat exchanger 24. Enter 25. The combustion exhaust gas that has entered the second heat exchanger 25 is collected in a heat exchange box 28 and then discharged from the exhaust stack 26 to the outside of the machine. The combustion exhaust gas having a high temperature before the combustion exhaust gas is discharged from the exhaust stack 26 to the outside via the combustion pipe 23, the first heat exchanger 24, and the second heat exchanger 25 is: As shown by the arrow in FIG. 3, heat is exchanged with the wind generated by the operation of the warm air blower 27, and the air heated by the combustion exhaust gas blows out from the blower opening 11a.

According to the oil-heated air heater 10 having the above-described structure, the second heat exchanger 25 is disposed behind the combustion tube 23 in correspondence with the combustion tube 23 and further between the combustion tube 23 and the combustion tube 23. Because it is arranged, the second
Since the heat exchanger is disposed, sufficient heat exchange is not performed, so that the blown air is prevented from being blown directly to the front of the oil hot air heater , and all the wind generated by the hot air blower 27 is removed. It can be in direct contact with the combustion cylinder 23, the first heat exchanger 24, and the second heat exchanger 25, thereby reducing heat loss and efficiently performing heat exchange. In addition, the second heat
A hot air blower 27 is arranged behind the exchanger 25.
Therefore, the air blown by the hot air blower 27 is
Heat through the second heat exchanger 25 having a relatively low temperature
Then, in the combustion cylinder 23 having a higher temperature than the second heat exchanger 25,
Heat is exchanged and blown out to the front of the oil warm air heater 10
Therefore, the heat exchange efficiency is improved. Also, the second heat exchanger 2
5 is lower in temperature than the combustion cylinder 23,
When flowing to the second heat exchanger 25 via the combustion tube 23, the fuel
The air that has been heat-exchanged in the firing tube 23 is passed through the second heat exchanger 25.
Prevent heat dissipation or inefficient heat absorption.
Can be.

FIGS. 4 and 5 show another embodiment.
In the figure, reference numeral 11 denotes a main body casing.
A combustion chamber 12 is formed below the inside, and a combustion blower 13 is disposed behind the combustion chamber 12. A fuel tank 14 is provided beside the combustion chamber 12, and an auxiliary tank 15 is provided below the fuel tank 14. An oil pump 16 is attached to the auxiliary tank 15, and one end of an oil pipe 17 is connected to the oil pump 16.

Inside the combustion chamber 12, a carburetor 18
Is provided, the carburetor 18 is connected to the other end of the oil feed pipe 17, and a gas injection nozzle 19 is additionally provided. Further, a mixing pipe 20 is provided in front of the gas injection nozzle 19, and a burner 31 is provided above the mixing pipe 20, and the burner 31 is connected to one end opening of the mixing pipe 20. . The burner 31 is formed with a plurality of burner heads 32 having a diameter smaller than the diameter of a combustion cylinder 43 described later and protruding therefrom. The burner head 32 has a plurality of flame holes 32a.
The upper surface is formed at the same height as the upper surface of the burner 41 main body.

Above the individual burner heads 32, combustion cylinders 43 are arranged facing each other. The upper portion of the combustion tube 43 is connected to a flat first heat exchanger 44 disposed above the main body casing 11, respectively.
Further, the first heat exchanger 44 is connected at one point to a second heat exchanger 45 disposed behind the combustion tube 43. As shown in FIG. 6, the second heat exchanger 45 is configured by connecting a plurality of hollow flat heat exchange portions 45 a in series, and is connected to the first heat exchanger 44. An exhaust pipe 26 is connected to the end opposite to the end where the exhaust pipe 26 is located.
Further, a blower for warm air 27 is disposed behind the combustion tube 43, the first heat exchanger 44, and the second heat exchanger 45. The hot-air blower 27 is disposed such that the upper end of the blade is located above the first heat exchanger 44 and the center thereof is located above the center of the second heat exchanger 45.

The oil warm air heater 40 constructed as described above
Is activated, the auxiliary tank 1
5. The liquid fuel supplied via the oil feed pump 16 and the oil feed pipe 17 is vaporized by the vaporizer 18 and injected from the gas injection nozzle 19 to the mixing pipe 20 as gas fuel. The injected gaseous fuel is mixed in a mixing pipe 20 with air sent by a combustion blower 13 disposed behind the combustion chamber 12, supplied to burners 31, and burned by each burner head 32. The combustion exhaust gas, which has been heated by the burner head 32 and has become high temperature, is collected in a first heat exchanger 44 via a combustion tube 43 disposed above each burner head 32, and further collected in a second heat exchanger 44. Enter 45. The combustion exhaust gas that has entered the second heat exchanger 45 is sequentially discharged from the exhaust stack 26 to the outside through the heat exchange unit 45a. The combustion exhaust gas having a high temperature before the combustion exhaust gas is discharged from the exhaust stack 26 to the outside via the combustion cylinder 43, the first heat exchanger 44, and the second heat exchanger 45 is: Heat is exchanged with the wind generated by the operation of the warm air blower 27 as indicated by the arrow in FIG. 7, and the air heated by the combustion exhaust gas blows out from the blower opening 11a.

According to the oil warm air heater 40 having the above-described configuration, the shape of the heat exchange portion 45a constituting the second heat exchanger 45 is a hollow flat shape. In comparison, the surface area is increased by about 10%, and the second heat exchanger 45 is located at the rear part of the combustion tube 43, and the central part thereof is located lower than the center of the hot air blower 27, Until the high-temperature combustion exhaust gas is discharged outside the machine, it can be in contact with the wind generated by the warm air blower 27 for a long time and widely in space, and can efficiently generate heat. Exchange can take place. In particular, the air that has conventionally hardly been heated and flows between the combustion tubes 43 is efficiently heated by the heat exchange unit 45a. Moreover,
Since the second heat exchanger 45 is hollow and has no exhaust resistance plate, it does not emit distortion noise.

Another embodiment of the burner 31 is shown in FIGS. 8 and 9, reference numeral 41 denotes a burner. The burner 41 has a plurality of burner heads 42 having a diameter smaller than the diameter of the combustion cylinder 43. A plurality of flame holes 42a are formed in the burner head 42, and the upper surface of the burner head 42 is formed at the same height as the upper surface of the burner 41 main body. Further, on the upper surface of the burner 41 and the plate pressing plate 46 is disposed, the plate holding plate 46 portion corresponding upper outer periphery of the burner head 42, flame holding ring to have a smaller diameter than the diameter of the combustion liner 43 47 is arranged
And a flame holding phosphor below the lower end of the combustion cylinder 43.
The structure is such that the upper end of the clip 47 is located .

A flame holding ring 47 formed in a plate holding plate 46 corresponding to an upper outer peripheral portion of the burner head 42 allows the flame emitted from the flame hole 42a of the burner head 42 to flow upward and spread laterally. It works to prevent it. Therefore, the flame and the combustion exhaust gas are directed right above, do not spread in the lateral direction, cause the lower wall of the combustion cylinder 43 and the upper wall of the combustion chamber 12 to glow red, and damage the constituent materials of the combustion chamber 12 and the combustion cylinder 43. Therefore, the heat loss of the combustion exhaust gas can be prevented and the combustion heat of the combustion exhaust gas can be effectively taken out without shortening the service life.

As described above, by efficiently performing the heat exchange, it is possible to effectively raise the room temperature and to contribute to energy saving. In addition, since the life of the parts is prolonged, it is possible to supply a highly reliable oil hot air heater.

[0030]

As described above in detail, the petroleum hot air heater according to the present invention has a plurality of burner heads, and a combustion cylinder is disposed above each of the burner heads. , The first and second heat exchangers are connected to each other, wherein the second heat exchanger is formed corresponding to the combustion cylinder and the second heat exchanger is connected to the combustion chamber. Since it is arranged behind the cylinder and between the combustion cylinders, sufficient heat exchange is not performed by the wind from the hot air blower passing between the combustion cylinders or between the second heat exchangers. Thus, it is possible to prevent the air from being blown directly to the front of the oil hot air heater, and all the wind generated by the hot air blower is directly sent to the combustion tube, the first heat exchanger, and the second heat exchanger. Contact and reduce heat loss, It is possible to improve the. Further
The hot air blower is arranged behind the second heat exchanger.
It is blown by the hot air blower
Air first passes through the second heat exchanger, which has a relatively low temperature.
Before the second heat exchanger is hotter than the second heat exchanger.
Heat is exchanged in the combustion tube and blows to the front of the oil hot air heater.
As a result, the heat exchange efficiency is improved. In addition, the
Since the heat exchanger 2 is lower in temperature than the combustion cylinder,
The air flows through the combustion tube to the second heat exchanger.
When the air is exchanged in the combustion cylinder,
Dissipation or inefficient heat absorption in the heat exchanger
Can be prevented.

Alternatively, in the above oil warm air heater ,
While the first heat exchanger and the second heat exchanger are connected at one place, the heat exchange units constituting the second heat exchanger are connected in series and are hollow. Since it is formed in a flat shape, the area and time during which the combustion exhaust gas comes into contact with the wind from the hot air blower increases between the combustion tube, the first heat exchanger, and the second heat exchanger. As a result, heat loss can be reduced, and heat exchange efficiency can be improved. In addition, since the second heat exchanger is formed in a hollow shape, when the combustion exhaust gas circulates to the second heat exchanger as in the related art, the second heat exchanger is in a second state.
No metallic noise (distortion noise) is generated between the heat exchanger of the first embodiment and the exhaust resistance plate disposed inside the second heat exchanger.

Alternatively, a plurality of burner heads are provided,
A combustion cylinder is disposed above each of these burner heads, and in a petroleum hot air heater in which the first and second heat exchangers are connected to the combustion cylinder, a flame holding ring is provided on an outer periphery above each of the burner heads. And the flame holding ring is larger than the diameter of the combustion cylinder.
Has a small diameter, and further below the lower end of the combustion cylinder
Since the upper end of the flame holding ring is located , it is possible to prevent the flame burning at the upper part of the burner head from spreading to the space between the burner and the combustion cylinder,
The heat loss of the combustion exhaust gas can be reduced, and the lower wall of the combustion cylinder and the upper wall of the space of the combustion chamber can be prevented from being glowed by a part of the flame. The life of components can be extended without compromising the material of the combustion cylinder.

As described above, by efficiently performing the heat exchange, the indoor temperature can be effectively raised,
As well as being able to contribute to energy conservation,
By extending the life of the parts, it becomes possible to supply highly reliable instruments.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment of an oil hot air heater according to the present invention.

Is a front sectional view showing an example of oil warm air heater according to Figure 2 the present invention.

FIG. 3 is a schematic plan cross-sectional view of a main part of the oil hot air heater, showing a flow of wind of the hot air blower of the embodiment of the oil hot air heater according to the present invention.

It is a side sectional view showing another embodiment of the oil warm-air heating apparatus according to Figure 4 the present invention.

5 is a front sectional view showing another embodiment of the oil warm-air heating apparatus according to the present invention.

FIG. 6 is a front sectional view showing a second heat exchanger of another embodiment of the oil hot air heater according to the present invention .

FIG. 7 is a schematic plan cross-sectional view of a main part of the oil warm air heater, showing a flow of wind of the warm air blower of another embodiment of the oil warm air heater according to the present invention.

FIG. 8 is a schematic front sectional view of a main part showing a peripheral portion of a burner of still another embodiment of the oil hot air heater according to the present invention.

FIG. 9 shows still another embodiment of the oil hot air heater according to the present invention.
It is an outline top view of an important section showing a burner peripheral part of an example .

FIG. 10 is a side sectional view showing a conventional oil hot air heater.

FIG. 11 is a front sectional view showing a conventional oil warm air heater.

FIG. 12 is a schematic front sectional view of a main part showing a peripheral portion of a burner of a conventional oil hot air heater .

FIG. 13 is a schematic plan view of a main part showing a peripheral portion of a burner of a conventional oil hot air heater .

[Explanation of symbols]

10,40 Oil warm air heater 22, 32, 42, the burner head 23, 43 the combustion cylinder 24, 44 the first heat exchanger 25 and 45 second heat exchanger 45a heat exchanger 4 7 flame holding ring

Claims (3)

(57) [Scope of request for utility model registration] 1. An oil hot air heater comprising a plurality of burner heads, a combustion cylinder disposed above each of the burner heads, and a first and second heat exchanger connected to the combustion cylinder. The second heat exchanger is formed corresponding to the combustion cylinder, the second heat exchanger is disposed behind the combustion cylinder and between the combustion cylinders , and the second heat exchanger
An oil hot air heater, characterized in that a hot air blower is disposed behind the oil heater. 2. The first heat exchanger and the second heat exchanger are connected in one place, while the heat exchangers constituting the second heat exchanger are connected in series. Rutotomoni, 請, characterized in that it is formed in a hollow flat shape
The oil warm air heater according to claim 1 . 3. An oil hot air heater comprising a plurality of burner heads, a combustion cylinder disposed above each of the burner heads, and a first and a second heat exchanger connected to the combustion cylinder. A flame holding ring is disposed on an upper outer periphery of each of the burner heads, and the flame holding ring has a diameter smaller than a diameter of the combustion cylinder.
And the flame holding below the lower end of the combustion cylinder.
A petroleum hot air heater characterized in that the upper end of the ring is located .