JPS5919207Y2 - Hot air machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hot air fan using an infrared type gas burner.

This type of gas burner has a forward radiation efficiency of 30-40%.
On the other hand, the disadvantage is that 60 to 70% of the heat (exhaust gas) rises as it is, and the heating effect of the entire room cannot be obtained by convection.

In order to eliminate this kind of drawback, for example,
No. 41 proposes a configuration in which exhaust gas rising from a burner is received on the upper surface of the fuselage and then blown out from a blow-off hole provided at the lower front of the fuselage by a fan in the lower part of the fuselage.

However, in such a conventional configuration, there is a risk that the temperature of the hot air from the blowout hole may become too high, and there is a drawback that the upper surface of the machine body becomes overheated when the fan is operated.

Furthermore, even when the fan is stopped, the upper surface of the fuselage is overheated due to the exhaust gas that accumulates below the upper surface of the fuselage.

The present invention takes into account the above-mentioned drawbacks and aims to blow out the exhaust gas at an appropriate temperature and prevent the upper surface of the aircraft from overheating.

Examples thereof will be explained below with reference to the drawings.

First, Figures 1 and 2 show a front view and a side cross-sectional view of the completed state. In the middle of the fuselage, an all-primary air type so-called infrared burner 2 with a forward-facing combustion surface carved out of a ceramic plate tilted slightly upward is installed, and at the rear of the lower stage of the interior is a burner for blowing hot air. 3 fans are installed.

Reference numeral 4 denotes an air outlet provided in the lower front plate of the fuselage 1, and is provided with a grill 5.

Reference numeral 6 denotes a warm air passage which includes a fan 3 at the rear of the burner 2 in the fuselage 1, and has a lower end communicating with the blow-off hole 4, and an upper end which opens forward above the burner 2 so that the first person can It is intimidating as Roa.

Reference numeral 8 denotes an air supply path provided between the back plate of the fuselage 1 and the hot air passage 6, and a first air supply hole 9 bored in the upper rear plate of the fuselage 1.
. . , and communicates with a second fan 10 that is bored at the rear middle stage of the hot air path 6 and at the upstream position of the fan 3.

Reference numeral 11 denotes a metal plate-shaped cover that simultaneously covers the upper front section and the front section of the upper surface of the fuselage 1 and is placed in front of the burner 2. The upper section of the front section is bent inward to near the extension line of the burner combustion surface to prevent burner combustion. An exhaust gas storage space 12 is formed at the front upper part of the surface, and an upwardly directed hot air vent 14 is formed on the bent upper surface 13.
・A window 16 facing the burner combustion surface is provided on the bent front surface 15.
A second air supply hole 17 is provided at the front of the upper surface facing the hot air hole 14, and a second air supply hole 17 is provided in the lower part of the front surface for combustion below the burner 2. Air holes 18 for sending air and cooling air are bored.

Then, the hot air hole 14... and the second air supply hole 17.
... are directly connected to the first inlet lower, and an air outlet 19 is formed between the bent tip of the cover 11 and the upper part of the hot air passage 6, and air holes 18... are formed from the outlet 19.
...The air that has entered and passed through burner 2 is guided to the first lower.

Reference numeral 20 denotes a delay thermostat mounted inside the front surface of the cover 11 above the burner and below the outlet 19, and is used to drive the fan 3 in a delayed manner at any time, as will be described later.

Gas supply and ignition to the burner 2 will be explained with reference to FIG. 3 which shows the system. The combustion surface of the burner 2 is divided into upper and lower parts, and both the upper and lower combustion surfaces are ignited according to the rotation of the gas cock 22 by the operating knob 21. It can be switched between strong combustion and weak combustion in which only the lower stage is burned.

Further, 23 is a gas governor, 24 is an ignition burner, and 25 is a thermocouple 26, which serves as a safety valve and an electromagnetic valve.

The operation of the fan 3 will be explained with reference to FIG. 4, which shows an electric circuit.
The burner 2 has strong and weak taps that are switched by a changeover switch 28 that is linked to the burner 2, and the burner 2 rotates strongly during strong twist firing and weakly rotates during weak combustion.

Further, 29 is a power switch for turning off and on the power of the motor 27, and 30 is a lamp for indicating motor drive.

The delay thermostat 20 is connected in series to the motor 27.

Next, the assembly structure will be explained in order based on FIG.

First, the bottom plate of the fuselage 1 is fixed to the base 31, and on the left side of the bottom plate, a pair of mounting plates 32.32 facing each other with a wide sheet metal spaced apart is erected, and the mounting plates 32.3
2 is brought into close contact with the bottom plate and back plate of the fuselage 1 and welded.

The rear part of the hot air passage 6 is fixed to the mounting plate 32, 32 by spanning between the mounting plates 32, 32, leaving the air supply passage 8; Mounting plate 3
2.32 so as to be rotatable, and furthermore, the front part of the hot air passage 6 is fixed to the mounting plate 32.32 by spanning between the mounting plates 32.32.

That is, the side portions of the hot air path 6 and the air supply path 8 are also served by a pair of mounting plates 32,32.

Further, a drive motor 27 for the fan 3 is arranged and fixed on the outside of the right-side mounting plate 32.

The middle part of the front end surface of the pair of mounting plates 32.32 is tilted diagonally upward at the rear, and the burner combustion surface is aligned with this inclined end surface, and the burner 2 is attached to the pair of mounting plates 32.32 in this inclined state.
erected between.

A mechanism section 33 including a gas cock 22, a power switch 29, a lamp 30, etc. is disposed on the outside of the right side mounting plate 32.

Thus, the side plates and front lower plate of the fuselage 1 are then attached, and the horizontal fixing plate 34 is attached to the lower plate at a position below the burner 2.

In addition, there is an operation knob 21 on the front right side. An operation panel board 37 having a pedestal 35 of the power switch 29 and a display window 36 of the lamp 30 is arranged and fixed.

A suitable inverted angle 3 is installed in advance on the upper rear part of the cover 11.
8... are fixed with screws, and a delay thermostat 20 electrically connected to the mechanism section 33 is attached inside the front surface of the cover 11.

Then, the lower end of this cover 11 is inserted and engaged with the fixing plate 34, and the angles 38 are screwed to the upper rear plate of the fuselage 1, thereby fixing the cover 11.

Install the guide 39 as appropriate.

Next, the operation of the present invention will be explained. First, the operating knob 21 is operated to cause the burner 2 to burn strongly or weakly.

During this operation, when the power switch 29 is turned on by the legitimate child 35, the lamp 30 is lit.

If the hands and the like are partially warmed only by the infrared radiant heat from the burner 2, the power switch 29 may be turned off.

In this case, the operation is the same as a normal infrared type gas stove that can be switched between high and low.

During this time, combustion air is constantly supplied from the air holes 18, and the burner 2 itself is prevented from overheating.

Also, the exhaust gas exits into the storage space 12 and enters the hot air vents 14...
. . . and the second air supply hole 17 . . . and rise upward into the room.

When heating the entire room with warm air, turn on the power switch 29.
Put it in.

In this case, the motor 27
The taps are linked and switched between strong and weak.

Then, the delay thermostat 20 is sensitive to heat by the exhaust gas from the burner 2, and the burner 2 enters stable combustion, and after the combustion state continues for a while, it is closed.

Then, the motor 27 rotates strongly or weakly depending on the strong or weak combustion of the burner 2 at that time, and until now the second air supply hole 17...
The exhaust gas that has escaped from and rose is forcibly sucked into the hot air path 6 from the first person lower by the fan 3 and is blown out from the blow-off hole 4.

By starting this fan 3, the second air supply hole 17...
・Air is sucked into the hot air path 6 from the first air supply hole 9, and mixed with the exhaust gas in the hot air path 6 to form warm air at an appropriate temperature, which is then released from the blowout hole 4. to go out.

Further, the air from the air hole 18 is supplied to the burner 2 and cools the burner 2, and this cooling air is passed from the outlet 19 to the first
The hot air is forcibly drawn into the hot air path 6 through the lower part of the body and mixed into the exhaust gas.

First air supply hole 9... and second air supply hole 17...
The upper and rear parts of the aircraft 1 are cooled by air supplied from ....

When combustion of burner 2 is stopped, there will be residual heat for a while, so delay thermostat 20 is closed and fan 3 rotates to continue cooling the fuselage 1 and burner 2, but when the residual heat falls below a predetermined amount. Then, the delay thermostat 20 opens and the motor 2
7 and fan 3 stop.

During this hot air blowing, the fan 3 rotates weakly during weak combustion, so the temperature of the hot air is appropriate.

As described above, the hot air fan according to the present invention is equipped with an infrared type gas burner and a fan, and the blowing hole of the hot air path by the fan is provided at the lower front of the machine body, and the inlet is provided at the upper part of the machine body, and the hot air blower is provided in front of the gas burner and at the upper part of the machine body. A cover is provided on the upper surface of the fuselage, and is bent inward at a position above the burner to form a storage space for exhaust gas, and a hot air hole communicating with the inlet is bored in the bent surface, and a cover is provided on the upper surface of the fuselage. It is characterized by having an air supply hole facing the hot air hole from above, and exposing the burner combustion surface to the outside through the cover.

Therefore, according to the present invention having the above-mentioned structure, since the water supply hole is provided to face the hot air hole provided in the curved surface from above, the hot air can be brought to an appropriate temperature by the supplied air, and overheating of the upper surface of the aircraft body can be prevented.

Further, when the fan is stopped, the exhaust gas collected in the reservoir space can be released through the hot air hole and the air supply hole, and abnormal overheating in the reservoir space can be prevented.

[Brief explanation of the drawing]

Figure 1 is a front view of the hot air fan of the present invention, Figure 2 is a side cross-sectional view, Figure 3 is a gas system diagram, Figure 4 is an electrical circuit diagram, and Figure 5 shows a state in which a part of the body is removed. , A is a top view, mouth is a front view,
C is a right side view. 1...Airframe, 2...Gas burner, 3.
...Fan, 4...Blowout hole, 6...
...Hot air path, 7...Inlet, 11...Cover, 12...Storage space, 14...Hot air vent, 16...・Window, 17...Air supply hole.

Claims (1)

[Scope of utility model registration request] The fuselage is equipped with an infrared gas burner and a fan, an outlet for the hot air passage by the fan is provided at the lower front of the fuselage, and an inlet is provided at the upper part of the fuselage, and a cover is provided in front of the gas burner and on the upper surface of the fuselage. At the same time, it is bent inward at the position above the burner to form a space where exhaust gas accumulates.
A hot air hole communicating with the inlet is formed on the bent surface, and an air supply hole is formed on the upper surface of the cover to face the hot air hole from above, so that the burner combustion surface faces the outside from the cover. Hot air machine.