JPH10227528A - Hot air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot air heater in which a cartridge type oil feeding tank does not show any high temperature even if a combustion section and a heat exchanger section are approached to either a side plate or a back plate of a main body of the hot air heater. SOLUTION: This hot air heater is constructed such that a cooling passage 31 is formed by a tank, heat shielding plate 13 covering an inside part of a main body of a substantial-box like device and a cartridge type oil feeding tank 14 and by a heat shielding plate 30 covering both the combustion section in the main body of the device and a heat exchanger section. A circumferential edge of the tank heat shielding plate 13 at a back surface opening 36 formed at a back surface of the heat shielding plate 30 is arranged more inside than that of an air intake 3 of the back plate 4 of the main body of the device. With such an arrangement as above, a part of the blown air passed through the air inlet port 3 is positively guided into the cooling passage 31, and further almost of all the air is flowed at the tank heat shielding plate 13 so as to cool the tank heat shielding plate 13, resulting in that the heat shielding plate 30 and the tank heat shielding plate 13 are arranged to be near from each other, the cartridge type oil feeding tank 14 does not show any high temperature, it is possible to prevent fuel oil in the tank from being evaporated out of an oil receiving pan and further to make a small-sized main body of the device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air heater for heating by burning fuel such as gas or oil.

[0002]

2. Description of the Related Art Heretofore, in this type of apparatus, a combustion section and a heat exchange air section provided in an apparatus main body are covered with a heat shield plate, and a convection fan fixed to a back plate of the apparatus main body. After the blown air exchanges heat with the combustion part and the heat exchange air part from the air intake formed in the back plate through the back opening formed in the back part of the heat shield plate, the temperature of the front panel of the equipment body is changed. The heating operation is performed by blowing out hot air from the air outlet, and the control is performed by a printed circuit board provided in the apparatus main body.

Further, a heat shield plate for a tank is provided between a cartridge type oil supply tank housed in the main body of the equipment and the combustion section and the heat exchange air section, and the heat shield plate, the heat shield plate for the tank and the main body of the equipment main body are provided. By arranging the heat shield plate in the apparatus main body so that a cooling path is formed between the side plate and the back plate, a part of the air blown from the convection fan flows through the cooling path, and In addition to cooling the back plate, the heat shield plate for the tank, and the heat shield plate, heat is prevented from being transmitted from the heat shield plate to the side plate, the back plate, and the heat shield plate for the tank as an air curtain.

[0004]

By the way, in this conventional apparatus, when the size of the equipment main body is reduced, the intervals between the side plates and the back plate of the equipment main body and the heat shield plate for the tank are reduced. It becomes narrow, and a sufficient amount of blast air does not flow through the cooling path, so it is not possible to sufficiently cool the side plate, back plate, tank heat shield plate, and the distance to the heat shield plate becomes short In order to prevent heat from being transmitted from the heat shield plate to the side plate, back plate, and tank heat shield plate as an air curtain, it is not enough. The temperature has risen.

[0005] As a result, if the side plate or the back plate is touched and burns, or if the temperature of the cartridge type fuel tank rises, especially if the temperature of the cartridge type fuel tank rises, the fuel in the tank will be discharged. There is a drawback that the pressure in the tank increases due to vaporization, and a large amount of fuel oil is supplied to the oil pan, and the fuel oil spills out of the oil pan.

Further, the temperature of the printed circuit board provided in the main body of the device also increases, and the printed circuit board is deformed.
There has been a drawback that the electronic component on the printed circuit board breaks down or malfunctions, so that the operation of the device main body is not performed normally.

If the hot air outlet is provided below the front panel in order to reduce the size of the apparatus body, the hot air outlet and the floor come close to each other, and the hot air coming out of the hot air outlet remains at a high temperature. There was a drawback that the floor surface was heated to a high temperature.

[0008]

In order to solve the above-mentioned drawbacks, the present invention focuses on this point. In particular, the present invention has a configuration in which a hot air outlet is formed in a front panel on the front surface of a substantially box-shaped device body and the device body is formed. A convection fan faces the air inlet formed in the back plate of the back, and a combustion unit and a heat exchanger unit are disposed in the device main body, and the combustion unit and the heat exchanger unit, a cartridge-type refueling tank, Is divided by a heat shield plate for a tank, and a heat shield plate is provided upright, which covers the back and side surfaces of the combustion part and the heat exchanger part, is open at the front, and has a back opening at the back part. In the hot air heater in which a cooling path is formed between the inside of the device main body and the tank heat shield plate, the peripheral edge of the tank heat shield plate side of the rear opening formed in the heat shield plate is connected to the back plate. It is located inside the air intake port.

[0009]

When the operation switch is pressed to start the operation, combustion is started, and at the same time as the combustion is started, the convection fan 28 is operated, and the blown air is supplied from the back of the main body 1 to the air inlet 3 of the back plate 4 and the heat shield. Passing through the rear opening 36 of the plate 30,
After heat exchange in the heat exchanger 23, the hot air is blown out from the hot air outlet 8 of the front panel 9 as hot air.

At this time, a part of the rear opening 36 on the side of the tank heat shield plate 13 is straightened to form a chord, so that the periphery of the rear opening 36 on the side of the tank heat shield plate 13 forms an air inlet. 3 is located inside the peripheral edge on the tank heat shield plate 13 side, whereby an air guide portion 37 is formed, and a part of the blown air is blocked from flowing toward the heat exchanger 23, and the rear plate The cooling water flows into the cooling passage 31 from the gap between the heat insulating plate 4 and the heat shield plate 30, and flows mainly from the back cooling passage 32 toward the right cooling passage 34.

Further, a part of the blast air flowing into the cooling passage 31 is supplied to the air guide hole 3 formed in the back surface of the heat shield plate 30.
8 flows into the board storage portion 46 between the bottom plate 7 and the unit mounting plate 40 through the inflow hole 43 of the unit mounting plate 40.

Then, from the cooling path 31 to the right side cooling path 34
Most of the blown air that has flowed into the tank cools the right side portion of the heat shield plate 30 and the side surface portion of the tank heat shield plate 13 so that the tank heat shield plate 13 is not overheated. The air blows out from the space 12 below the bottom plate 7 to the front lower part of the device main body 1 through the blowout hole 44, and the tank is heated from the right side of the heat shield plate 30 heated by the heat from the combustion unit 16 and the heat exchanger unit 22. It acts as an air curtain to prevent heat from being transmitted to the side portions of the heat shield plate 13, and flows out of the device main body 1 through a hot air outlet 8 of the front panel 9 or a gap between the bottom plate 7 and the front panel 9. To go.

The blast air flowing from the cooling path 31 to the left side cooling path 33 prevents the left side plate 5 of the equipment body 1 from being overheated and the left side plate 5 and the heat shield plate 30 of the equipment body 1. After cooling the left side portion of the bottom plate 7,
4 and blows out from the space 12 below the bottom plate 7 to the lower front side of the device main body 1 or the left side plate 5 of the device main body 1.
It acts as an air curtain so that heat is not transmitted to the space between the ventilation hole 39 of the side panel 5 of the device body 1 and the hot air outlet 8 of the front panel 9 or between the bottom panel 7 and the side panel 5 and the front panel 9. Flows out of the device main body 1 through the gap.

The air blown from the air guide hole 38 of the heat shield plate 30 through the inflow hole 43 of the unit mounting plate 40 to the substrate storage portion 46 between the bottom plate 7 and the unit mounting plate 40 is supplied to the unit mounting plate 40. After passing over the board protecting member 49 covering the board mounting plate 45 fixed below the board 40, it passes from the space 12 below the bottom board 7 through the lower blowout hole 44 of the bottom board 7 to the device body. 1 is blown downward from the front.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A hot air heater according to the present invention will be described below with reference to an embodiment shown in the drawings. 1 is a device body of a hot air heater, a top plate 2 provided with various buttons and a display unit, a back plate 4 having a circular air inlet 3 and an exhaust hole (not shown).
And left and right side plates 5 and 6, a bottom plate 7 at the bottom, a front panel 9 provided with a hot air outlet 8, and a leg 10 provided at a corner of the bottom of the bottom plate 7. It is installed indoors with the space 12 formed between the bottom plate 7 and the mounting table 11.

Reference numeral 13 denotes a tank heat shield plate having a substantially L-shaped cross section.
The tank heat shield plate 13, the back plate 4, and the right side plate 6 form a storage space of a cartridge type tank 14 which is detachably stored, and stores a certain amount of fuel oil supplied from the cartridge type tank 14. It is provided on the upper part of the oil receiving tray 15 to be stored.

Reference numeral 16 denotes a combustion unit, which burns fuel oil sent from the oil pan 15 by a fuel pump 17 and mixes and burns combustion air blown by a combustion air blower 18 with the burner unit 19. It comprises an outer cylinder 20 surrounding the combustion flame and guiding high-temperature exhaust gas generated by combustion. The opening of the burner portion 19 is fixed to the burner mount 21, and one end of the outer cylinder 20 is fixed to the burner mount 21. By doing so, they are integrated.

Reference numeral 22 denotes a heat exchanger section, in which the heat of the exhaust gas is blown by passing the high-temperature exhaust gas guided by the outer cylinder 20 in communication with the combustion section 16 through an internal meandering exhaust gas passage. A heat exchanger 23 for efficiently exchanging heat with incoming air, a relay heat exchanger 24 connecting the heat exchanger 23 and the outer cylinder 20 of the combustion section 16, and an exhaust pipe formed in an exhaust hole formed in the back plate 4. An exhaust pipe 26 having one end fixed from the inside of the apparatus main body 1 by a mounting bracket 25, and a connection receiving section 27 for inserting and connecting the other end to exhaust the exhaust gas from the apparatus main body 1; In an integrated state, it is detachably fixed in the device main body 1.

A convection fan 28 has a propeller fan 29 whose diameter is slightly smaller than the diameter of the air intake 3 of the back plate 4;
It consists of a blower motor (not shown) that rotates it,
The propeller fan 29 is fixed to the outside of the back plate 4 such that the center of the propeller fan 29 coincides with the center of the air intake 3 of the back plate 4.

Reference numeral 30 denotes a heat shield plate having a substantially U-shaped cross section. The heat shield plate 30 surrounds the back surface and both side surfaces of the combustion unit 16 and the heat exchanger unit 22 in the device main body 1, and also has the rear plate 4 and the side plate of the device main body 1. The cooling passage 31 is formed by disposing a gap between the face plate 5 and the tank heat shield plate 13.

The cooling passage 31 is provided between the back plate 4 and the heat shield plate 30.
A rear cooling path 32 formed by a rear part of the heat shield plate 30, a left side cooling path 33 formed by a left side part of the heat shield plate 30 and a part extending to the left side plate 5 of the device body 1, It comprises a right side cooling path 34 formed by a right side part and a part extending to the side surface of the tank heat shield plate 13 of the equipment main body 1.

A bell mouth 3 having a center aligned with the air inlet 3 of the back plate 4 is provided on the back of the heat shield plate 30.
The bell mouth 35 is formed with a rear opening 36 in which the shape of the bell mouth 35 is not the same as the circular air inlet 3 formed in the rear plate 4 but has the same diameter as the air inlet 3 of the rear plate 4. A part of the circle on the tank heat shield plate 13 side is straightened to form a chord, so that the tank heat shield plate 1 in the rear opening 36 is formed.
The peripheral edge on the third side is located inside the peripheral edge of the air inlet 3 on the tank heat shield plate 13 side, whereby an air guide portion 37 is formed, and a part of the blown air is directed toward the heat exchanger 23. The flow is interrupted, flows into the cooling path 31 from the gap between the rear plate 4 and the heat shield plate 30, and flows from the rear cooling path 32 mainly toward the right side cooling path 34.

Further, below the back portion of the heat shield plate 30,
Air guide holes 38 are formed on the left and right sides to allow a part of the blast air flowing into the rear cooling passage 32 to pass therethrough.

Further, the side surface portion on the cartridge type tank 14 side constituting the right side cooling passage 34 of the heat shield plate 30 is as follows:
It is bent halfway from the upper part to the lower part so as to cover the exhaust pipe 26, and the bent part has the combustion part 16.
Is fixed to the right side cooling passage 3.
4 is formed.

A plurality of ventilation holes 39 are formed on the side plates 5 and 6 of the main body 1 on the side of the front panel 9 where the end portions of the side panels 5 and 6 are bent, and the bent end portions of the side plates 5 and 6 are shielded from heat. Board 3
By screwing to the end of the “0”, play of the side plates 5 and 6 and the heat shield plate 30 is prevented, and the assembling strength is improved.

Numeral 40 denotes a unit mounting plate, which is mounted on the upper surface of the bottom plate 7 and is integrated with the combustion section 16 and the heat exchanger section 22.
Are detachably fixed to the mounting surface 41, and are bent substantially at right angles to the mounting surface 41, on the left and right sides of the rear engaging portion 42 in contact with the lower back of the heat shield plate 30, and on the upper surface of the bottom plate 7. When the unit mounting plate 40 is mounted, an inflow hole 43 is provided so as to be aligned with the air guide hole 38 of the heat shield plate 30,
Part of the blast air flowing into the rear cooling path 32 is
0 air guide hole 38 to inflow hole 4 of unit mounting plate 40
3 and flows to the lower surface side of the unit mounting plate 40.

Reference numeral 44 denotes a lower outlet, which is a front panel 9 of the bottom plate 7.
A plurality of left side cooling passages 3 are provided in the side at substantially equal intervals in the lateral direction.
3 and the bottom plate 7 located on the right side cooling passage 34 are also provided with a lower blowout hole 44 substantially at the center of the gap.

Reference numeral 45 denotes a board mounting plate, which is detachably provided in a board storage portion 46 formed between the bottom plate 7 and the unit mounting plate 40, and which is a printed circuit board 47 for controlling operation of equipment.
And a power transformer 48 for supplying power to the printed circuit board 47 and each electronic component in the device body 1 are detachably attached and integrated.

Reference numeral 49 denotes a board protection member made of a soft plastic material or the like, which covers the printed board 47 and the power transformer 48 when the board mounting plate 45 is mounted in the main body 1 of the apparatus. In addition to preventing dust from adhering to the board 47 and the power transformer 48, the unit mounting plate 40 and the board protecting portion 49 allow the dust from passing from the air guide hole 38 of the heat shield plate 30 to the inflow hole 43 of the unit mounting plate 40. This forms an air passage 50 through which the blown air passes.

Next, the combustion operation of the warm air heater will be described. First, when an operation switch provided on the top plate 2 is pressed, the operation starts, and the heater of the burner unit 19 is energized to increase the temperature. When the temperature of the burner unit 19 increases to a preset temperature, the fuel Fuel oil is supplied from the pump 17 to the burner unit 19, and combustion air is supplied from the combustion air blower 18 to the burner unit 19, whereby the fuel oil and the combustion air are premixed and mixed in the burner unit 19. The air-fuel mixture blown out from a flame hole (not shown) located in the outer cylinder 20 above the burner 19 is ignited to start combustion.

At the same time as the start of combustion, the convection fan 28
Operates, and the air blown by the convection fan 28
After passing through the air inlet 3 of the back plate 4 and the back opening 36 of the heat shield plate 30 from the back and exchanging heat in the heat exchanger 23, the hot air is blown out from the hot air outlet 8 of the front panel 9.

At this time, a part of the blown air is blocked from flowing toward the heat exchanger 23 by the air guide portion 37 formed on the tank heat shield plate 13 side of the rear opening 36 of the heat shield plate 30. Then, the cooling water flows into the rear cooling passage 32 of the cooling passage 31 from the gap between the rear plate 4 and the heat shield plate 30, most of the cooling water flows into the right cooling passage 34, and the remaining part of the cooling water flows into the right cooling passage 34. A part of the blast air flowing into the left side cooling passage 33 and into the both side cooling passages 33 and 34 passes from the air guide hole 38 of the heat shield plate 30 through the inflow hole 43 of the unit mounting plate 40 to be mounted on the unit. It flows toward the lower surface side of the plate 40.

Most of the air blown into the right side cooling passage 34 is supplied to the right side of the heat shield 30 and the side of the tank heat shield 13 so that the tank heat shield 13 is not overheated. And the combustion section 16 and the heat exchanger section 22
The heat shield plate 30 serves as an air curtain so that heat is not transmitted from the right side surface portion of the heat shield plate 30 heated by the heat from the bottom plate 7 to the side surface portion of the tank heat shield plate 13, and from the lower blowout hole 44 of the bottom plate 7 to the device body 1. Through the space 12 below the bottom plate 7 of the main body 1 and blow out from the front side of the main body 1, or through the gap between the warm air outlet 8 of the front panel 9 and the bottom plate 7 and the front panel 9, and so on. It flows out of 1.

The blast air flowing into the left side cooling passage 33 is used to prevent the left side plate 5 of the device main body 1 from being overheated, so that the left side plate 5 of the device main body 1 and the left side portion of the heat shield plate 30 are not heated. And an air curtain to prevent heat from being transmitted from the left side portion of the heat shield plate 30 heated by the heat from the combustion portion 16 and the heat exchanger portion 22 to the left side plate 5 of the device body 1. And the lower blowout hole 4 formed on the front panel 9 side of the bottom plate 7 forming the left side cooling passage 33.
4, flows through the space 12 below the bottom plate 7 of the device main body 1, flows downward to the front of the device main body 1 and blows out,
What flows from the ventilation hole 39 of the side plate 4 of the device body 1 to the outside of the device body 1 through the hot air outlet 89 of the front panel 9 and the gap between the bottom plate 7 and the side plate 5 and the front panel 9. It is.

Further, since the lower part of the right side cooling path 34 is formed by the burner mount 21 of the combustion part 16 and the portion extending to the side surface of the tank heat shield plate 13, the right side cooling path 3 is formed.
The combustion air blower 18 and the burner unit 19 are cooled by the blast air flowing to 3 so as not to become high in temperature.

The blast air flowing from the air guide hole 38 of the heat shield plate 30 through the inflow hole 43 of the unit mounting plate 40 and into the substrate storage portion 46 on the lower surface of the unit mounting plate 40 is connected to the unit mounting plate 40. The dust passes through the air passage 50 formed by the substrate protecting member 49 and blows off the dust so that the dust does not adhere or accumulate on the substrate protecting member 49. Further, while cooling the unit mounting plate 40 from the lower surface, This serves as an air curtain to prevent heat from being transmitted from the unit mounting plate 40 to the printed circuit board 47 and the power transformer 48.

Most of the blast air that has passed through the air passage 50 passes from the lower blowout hole 44 of the bottom plate 7 through the space 12 below the bottom plate 7 of the device body 1, and
It flows downward and blows out.

As described above, the combustion section 16 and the heat exchanger section 22
Back plate 4 and side plate 5 of equipment body 1 and heat shield plate 1 for tank
3, the air guide portion 37 of the rear opening 36 allows a part of the air blown from the convection fan 28 to flow into the cooling path 31 reliably, so that the heat shield plate 30 and the heat shield plate The back plate 4 and the side plate 5 of the device main body 1 and the tank heat shield plate 13 facing the device body 1 with a gap therebetween are cooled, and the heat shield plate 30 is used to cool the rear plate 4 and the side plate 5 of the device main body 1 and the tank. Since heat is prevented from being transmitted to the heat shield plate 13, it is possible to prevent the side plate 5 and the back plate 4 of the device main body 1 from becoming hot.

Accordingly, it is possible to prevent a burn due to touching the rear plate 4 and the side plate 5 and the like, and particularly, to prevent the blown air guided to the right side cooling passage 34 on the tank heat shield plate 13 side. By letting most of the fuel flow, the temperature of the cartridge-type refueling tank 14 adjacent to the tank heat shield plate 13 rises, and the fuel in the cartridge-type refueling tank 14 evaporates to increase the pressure in the tank. In addition, it is possible to reliably prevent a large amount of fuel oil from being supplied to the oil receiving tray 15 and to spill fuel oil from the oil receiving tray 15, thereby making the device body 1 compact.

Further, a part of the blast air guided to the cooling passage 31 passes from the air guide hole 38 of the heat shield plate 30 to the inflow hole 43 of the unit mounting plate 40, and the unit mounting plate 40 and the substrate protecting member. 49 and the air passage 50 formed by
, The dust is blown off so that the dust does not adhere or accumulate on the substrate protection member 49, and further, the unit mounting plate 40 is cooled from the lower surface and printed from the unit mounting plate 40 by serving as an air curtain. Since the heat is not transmitted to the board 47 and the power transformer 48, the printed circuit board 47 and the power transformer 48 are mounted on the heat shield plate 30 that covers the combustion section 16 and the heat exchanger section 22 by reducing the size of the device body 1. Even if approached, the printed circuit board 47 and the power transformer 48 can be prevented from being damaged by heat.

Further, blasted air passing through the left side cooling path 33 and the right side cooling path 34 to cool the heat shield plate 30, the rear plate 4, the side plate 5, and the tank heat shield plate 13 of the equipment body 1, After passing through the air passage 50, the unit mounting plate 40 is cooled from the lower surface, and also functions as an air curtain from the unit mounting plate 40 to the printed circuit board 47 and the power transformer 48.
The blast air, which prevents heat from being transmitted to the air, flows from the lower outlet 44 of the bottom plate 7 to the space 12 below the bottom plate 7 of the device body 1.
And blows out to the lower front of the device main body 1 and blows out, so that the high-temperature hot air from the hot-air outlet 8 does not directly hit the floor, thereby preventing the floor from becoming hot. The position of the hot air outlet 8 of the panel 9 can be made lower and the size of the device body can be reduced.

In this embodiment, the upper part of the side surface of the heat shield plate 30 on the cartridge type tank 14 side is the exhaust pipe 2.
6, the burner mounting base 21 of the combustion part 16 is fixed to the bent portion, but the present invention is not limited to this. Shape may be sufficient.

In the present embodiment, the air guide 37 is
The shape of the bell mouth 35 in the back opening 36 of the heat shield plate 30 is formed by forming a chord with a part of the circle on the side of the tank heat shield plate 13 having the same diameter as the air inlet 3 of the back plate 4 as a straight line. However, the present invention is not limited to this, and the bell mouth 35 of the back opening 36 of the heat shield plate 30 may be connected to the air inlet 3 of the back plate 4 with the same diameter as the air inlet 3 of the back plate 4. It may be a circular shape whose center is shifted in a direction away from the cartridge type tank 14.

[0044]

As described above, according to the present invention, a convection fan is formed at the front panel of the front of the substantially box-shaped device main body, and the convection fan faces the air intake formed at the back plate of the rear of the device main body. A combustion section and a heat exchanger section are provided in the apparatus main body, and the combustion section and the heat exchanger section are separated from the cartridge-type refueling tank by a tank heat shield plate. A heat shield plate that covers the back and side surfaces of the container, opens at the front and has a back opening at the rear, and cools the heat shield between the inside of the equipment body and the heat shield for the tank In the hot air heater in which the path is formed, the periphery of the tank heat shield plate side of the back opening formed in the heat shield plate is located inside the air intake of the back plate. Even if the combustion unit and heat exchanger are placed close to the side and back plates of the main unit, Part of the air that is blown from the pump into the cooling passage, and most of the blown air flows into the tank heat shield, so that the tank heat shield is sufficiently cooled This prevents the temperature of the oil tank from rising, whereby the fuel in the tank evaporates and the pressure increases, so that the fuel can be prevented from overflowing from the oil pan and the device body can be reduced in size.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a forced air supply / exhaust type heater provided with an embodiment of the present invention.

FIG. 2 is a front view showing the inside of the device main body.

FIG. 3 is a front view showing a state where the combustion unit and the heat exchanger unit are removed.

FIG. 4 is an essential part cross-sectional view showing a flow of air by the convection fan.

FIG. 5 is an essential part cross-sectional view showing the flow of air in an air passage between the unit mounting plate and the bottom plate.

FIG. 6 is an enlarged sectional view of an essential part of the part A.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 3 Air inlet 4 Back plate 8 Front panel 9 Device main body 13 Heat shield plate for tank 14 Cartridge type oil supply tank 16 Combustion part 22 Heat exchanger part 28 Convection fan 30 Heat shield plate 31 Cooling path 36 Back opening

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuji Jimbo 7-7 Higashi Shinbo, Sanjo City, Niigata Prefecture (72) Inventor Tokuzumi Hirono 7-7 Higashi Shinbo, Sanjo City, Niigata Prefecture Corona Co., Ltd.

Claims (3)

[Claims] A hot air outlet is formed in a front panel on a front surface of a substantially box-shaped device main body, a convection fan faces an air inlet formed on a back plate on a rear surface of the device main body, and a combustion unit is provided in the device main body. And a heat exchanger section, the combustion section and the heat exchanger section are separated from the cartridge-type refueling tank by a tank heat shield, and the front and rear surfaces of the combustion section and the heat exchanger section are covered. Is open and a heat shield plate with a back opening is provided on the back part.The heat shield plate is used for a hot air heater that forms a cooling path between the inside of the equipment main body and the tank heat shield plate. A hot-air heater, wherein a peripheral edge of the rear opening formed on the heat shield plate on the tank heat shield side is located inside an air inlet of the rear plate. 2. A bottom plate constituting a bottom surface of the device main body,
2. The hot air heating system according to claim 1, further comprising a substrate storage portion through which air in the cooling passage flows, between the unit mounting plate fixed on the bottom plate and a combustion portion mounted on the bottom plate. vessel. 3. The hot air heater according to claim 2, wherein a plurality of lower blow holes are formed at a front end of the bottom plate.