JPH1114155A - Hot air blower - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a hot air blower capable of completely burning fuel to improve thermal efficiency and not requiring a chimney. SOLUTION: A combustion furnace 8 is disposed in a cylindrical wind tunnel 1 whose both ends are closed, and a nozzle 12a of a burner 12 faces the combustion furnace 8, and the fuel is injected into the combustion furnace 8 from the nozzle 12a. A hot air blower that burns the fuel, introduces air into the wind tunnel 1 by the blowers 6 and 5, warms the air, and then blows hot air from the opening 1a of the wind tunnel 1 to the outside, A heat storage unit 15 is provided in the combustion furnace 8 for receiving heat from the burner 12 and storing heat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a hot air blower that burns fuel, warms air with the heat, and blows the hot air.

[0002]

2. Description of the Related Art Conventionally, there are hot air heaters for heating vegetables, fruits, horticultural houses and factories. This is done by burning fuel with a burner, using this heat to warm the air, blowing this hot air with a blower, and spreading it through a vinyl duct connected to this hot air into the house etc. for heating. I am trying to do it.

[0003]

However, in such a conventional apparatus, it is difficult to completely burn the fuel, the heat efficiency is low, and a chimney is provided to discharge incomplete combustion gas. Because of this, heat escapes from this chimney, and the work of arranging the chimney is troublesome.In addition, the arrangement position of the hot air blower is restricted and it is not possible to move it freely, and it is easy to use. I couldn't say.

Accordingly, the present invention enables complete combustion of fuel to improve thermal efficiency,
The chimney arrangement is to provide a hot air heater that is free.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a combustion furnace is provided in a cylindrical wind tunnel whose both ends are closed, and the combustion furnace is provided in the combustion furnace. With the nozzle of the burner facing, the fuel injected from the nozzle into the combustion furnace is burned, and air is introduced into the wind tunnel by a blower, and after the air is warmed, warm air is discharged from the opening of the wind tunnel to the outside. The combustion furnace is characterized in that the combustion furnace is provided with a heat storage unit that receives heat from the burner and stores heat.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the combustion furnace has a cylindrical shape, and an opening is formed at a tip end opposite to the nozzle arrangement portion. On the other hand, the blower is located closer to the nozzle arrangement portion than the tip of the combustion furnace, and the opening formed in the wind tunnel is located forward of the tip of the combustion furnace. And

According to a third aspect of the present invention, in addition to the configuration of the second aspect, the opening formed at the tip of the combustion furnace is closed by a cover having a plurality of through holes. It is characterized by.

[0008]

Embodiments of the present invention will be described below.

FIG. 1 to FIG. 6 show an embodiment of the present invention.

First, the structure will be described. In FIG. 1, reference numeral 1 denotes a wind tunnel, which is a front opening of a cylindrical body 2 (FIG. 1).
The middle left side opening) is closed by a lid 3, a heat insulating board 4 is disposed inside the lid 3, and the right end side in FIG. 1 is also closed.

Above the cylindrical body 2, first and second blowers 6 and 5 are disposed along the longitudinal direction.
5 is set so that outside air is introduced into the wind tunnel 2.

A combustion furnace 8 is provided in the wind tunnel 1 and supported by a stand 9. This combustion furnace 8
It has a cylindrical combustion furnace body 10 having one end 10a closed and an opening 10e formed at the other end, and a mounting hole 10b formed at one end 10a thereof.
Is connected to the burner 12.

Further, inside the combustion furnace main body 10, that is,
A heat storage unit 15 is provided in the combustion chamber 14.

More specifically, the heat storage section 15 includes a plurality of stainless steel heat storage cylinders 15a connected to each other as shown in FIG. 4 and the like, and a stainless steel heat storage body spirally wound inside each of these heat storage cylinders 15a. 15b is provided.

The wind tunnel 1 is mounted on a gantry 18. An opening 1a is formed in the lower portion of the wind tunnel 1 so as to penetrate the inside and outside of the wind tunnel 1, and a rectangular cylindrical mounting portion is formed in the opening 1a. 19 are provided. And this mounting part 19
In addition, a connecting body 20 for connecting the vinyl duct 22 and the vinyl duct 22 is attached.

The connecting body 20 has the shape of a square tube with a bottom and an open upper end, and the upper part 20a is mounted on the mounting part 19 with bolts or the like. Hexagonal air outlets 20b are formed on opposing side walls of the connecting body 20, and the end of the vinyl duct 22 fits outside a flange portion 20c formed on a peripheral portion of the air outlet 20b. And attached by a band (not shown). Since the upper end opening of the connecting body 20 has a square shape, the mounting position can be changed by 90 degrees.

The vinyl duct 22 is arranged in various forms depending on the size of the house 110 and the like, and FIGS. 5, 6 and the like show examples.

An air intake duct 25 is connected to the burner 12, and this duct 25 is extended to the outside of the house 110 as shown in FIG.

The burner 12 is provided with a nozzle 12a for injecting fuel, and an electrode rod (not shown) for igniting the fuel injected from the nozzle 12a.

The blowers 5 and 6 and the opening 1 of the wind tunnel 1
a, the positional relationship between the combustion furnace main body opening 10e and the like is such that the blowers 5 and 6 are located closer to the nozzle 12a disposition portion side than the combustion furnace main body opening 10e which is the tip of the combustion furnace 8; The opening 1a of the wind tunnel 1 is positioned halfway forward (left side in FIG. 1) from the tip of the combustion furnace 8.

Next, the operation will be described.

When the power switch is turned on, the indicator lamp of the power turns on, and the temperature controller operates. And the first and second
When the blowers 6 and 5 are operated, an air flow from the rear to the front of the wind tunnel 1 is formed, and the air flow from the inside of the wind tunnel 1 to the vinyl duct 22 is smoothly formed.

On the other hand, in the burner 12, when the electrode rod is preheated and heated, fuel is injected from the nozzle 12a, and the fuel is ignited by the electrode rod, so that combustion is performed.

The heat generated by the combustion causes the heat storage section 1
Since the temperature of the heat storage unit 5 rises and becomes a heating element, even if unburned fuel is injected to the heat storage unit 15, the heat storage unit 1
At the time of hitting 5, the fuel is burned. Therefore, unburned fuel is not blown to the vinyl duct 22 side.

Further, in this state, the air in the house 110 is introduced into the wind tunnel 1 outside the hot air blower 100 by the first and second blowers 6 and 5, and the air is converted into heat in the combustion furnace 8. To make it warm air,
The air is blown within 0.

In this case, the arrangement positions of the first and second blowers 6 and 5 are located on the right side in the figure from the tip of the combustion furnace 8 and at the connection portion (opening 1a) of the vinyl duct 22. Since about half is located on the left side in the figure from the tip of the combustion furnace 8, the wind from both the blowers 6, 5 does not flow directly into the combustion chamber 14, and the air in the wind tunnel 1 Air is blown from the opening 1a at the position. Therefore, the flow of the wind in the wind tunnel 1 is as shown by the arrow, and a rise in the pressure in the combustion chamber 14 can be suppressed, so that the ignitability and the combustibility can be improved.

When the room temperature in the house 110 reaches the set temperature, the control device stops the operation of the burner 12 and stops the combustion in the combustion chamber 14. However, if both the blowers 6 and 5 are stopped at the same time as the combustion is stopped, the temperature of the combustion furnace 8 increases due to residual heat.
By operating both the blowers 6 and 5 continuously for a certain period of time after stopping the combustion, the temperature of the combustion furnace 8 is prevented from rising abnormally.

After that, when the room temperature in the house 110 becomes lower than the set temperature, the burner 12 automatically operates again to start combustion, warm air is blown into the room, and the room temperature rises.

By repeating such an operation, the room temperature in the house 110 is controlled to the set temperature.

Since the fuel is completely burned in this manner, the thermal efficiency is improved, so that the fuel consumption can be reduced and a chimney for discharging incomplete combustion gas is not required. Therefore, no chimney equipment is required, and as a result, there is no restriction on the installation position of the chimney, so that the degree of freedom of the installation position of the hot air blower 100 is improved.

Such a hot air blower is provided with various safety devices. When the temperature of the combustion furnace 8 rises abnormally or when the burner 12 becomes abnormal, an alarm is issued or the operation is started. Or to stop.

On the other hand, the hot air blower 100 is
When the vinyl duct 22 is extended in a direction (vertical direction in the figure) orthogonal to the longitudinal direction (horizontal direction in the figure) of the hot air blower 100 as shown in FIG. When cultivating the upper and lower ranges H1 of the hot air blower 100 with a tractor or the like, the hot air blower 100 is in the way and many parts cannot be cultivated.

Therefore, the connecting body 20 is removed from the state shown in FIG. 1 and the like and rotated by 90 ° so that the pair of air outlets 20b face the longitudinal direction of the hot air blower 100 (vertical direction in the figure). If the vinyl duct 22 is connected to the air outlet 20b, the hot air blower 100 can be arranged along the side surface of the house 110 as shown in FIG. 6, and the dead space of the hot air blower 100 is in a range indicated by H2. Becomes
The range of the dead space can be narrower than in the case of H1.

Since the direction of the air outlet 20b can be changed by changing the mounting position of the connecting body 20, the direction of the vinyl duct 22 with respect to the hot air device 100 is changed to the direction of the hot air device 100 with respect to the house 110. It can be changed appropriately according to the position. In this embodiment, a pair of air outlets 20 b
Are formed, and a pair of air outlets 20 are formed on adjacent side walls.
b can also be formed.

As shown by a two-dot chain line in FIG. 1, a cover 29 made of a ceramic plate having a large number of through holes 29a can be attached to the tip of the heat storage cylinder 15a. By doing so, the intrusion of wind into the combustion chamber 14 can be further reduced, and a rise in pressure can be prevented, so that ignitability and combustibility can be further improved. Further, according to the present invention, the warm air blower of the present invention can be installed not only in a house but also in any place where heating is required, such as a factory, and can be used as a hot air supply source such as a dryer.

[0036]

As described above, according to the first aspect of the present invention, by providing the heat storage section in the combustion furnace, the fuel can be completely burned and the thermal efficiency can be improved. At the same time, it is not necessary to dispose the chimney, and the degree of freedom of the installation position can be improved.

According to the second aspect of the present invention, in addition to the above effects, by setting the position of the blower and the position of the opening in a predetermined positional relationship with respect to the opening of the combustion furnace, An increase in pressure can be suppressed, and ignitability and combustibility can be improved.

According to the third aspect of the present invention, in addition to the above-mentioned effects, the opening formed at the tip of the combustion furnace is closed by a cover having a plurality of through holes, so that the inside of the combustion furnace can be improved. Can be further suppressed, and ignitability and combustibility can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a warm air blower according to an embodiment of the present invention.

FIG. 2 is a plan view of the warm air blower according to the embodiment.

FIG. 3 is a right side view of FIG. 2 according to the embodiment;

FIG. 4 is a perspective view showing a heat storage cylinder and the like according to the embodiment.

FIG. 5 is an explanatory diagram showing an installation state of the warm air blower according to the embodiment.

FIG. 6 is an explanatory diagram showing another installation state of the warm air blower according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wind tunnel 1a Opening 1c Hot air outlet 5 2nd air blower 6 1st air blower 8 Combustion furnace 10 Combustion furnace main body 10b Opening 12 Burner 14 Combustion chamber 15 Thermal storage unit 20 Connected body 20b Air vent 22 Vinyl duct 100 Hot air heater 110 House

Claims (3)

[Claims] 1. A combustion furnace is provided in a cylindrical wind tunnel whose both ends are closed, and a burner nozzle faces the combustion furnace, and fuel injected from the nozzle into the combustion furnace is burned. A blower that introduces air into the wind tunnel by a blower, warms the air, and then blows warm air to the outside from the opening of the wind tunnel, wherein heat from the burner is provided in the combustion furnace. A warm air blower comprising a heat storage unit for receiving and storing heat. 2. The combustion furnace has a tubular shape, and an opening is formed at a tip end opposite to the nozzle placement portion, while the blower is provided with the nozzle from a tip end of the combustion furnace. The hot air blower according to claim 1, wherein an opening formed in the wind tunnel is located forward of a front end of the combustion furnace. 3. The hot air blower according to claim 2, wherein an opening formed at a front end of the combustion furnace is closed by a cover having a plurality of through holes.