JP2014040971A - Hot air heating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot air heating apparatus capable of preventing a periphery of a combustion part in an apparatus body from being turned to a high temperature.SOLUTION: A wind direction plate 50 is arranged between a stand 51 and a combustion part 6, an air guide piece 52 inclined upward is formed on an apparatus body 1 rear side of the wind direction plate 50, a hot air guide piece 53 inclined upward is formed on an apparatus body 1 front side of the wind direction plate 50, and a blow-out port 4 is formed on an upper position than the wind direction plate 50 on the front of the apparatus body 1, so that a part of air allowed to flow into the apparatus body by a circulating fan 21 is allowed to flow into a periphery of the combustion part 6 and branched to two upper and lower parts of the wind direction plate 50 by an air guide piece, and air flowing on the upper part is guided by a hot air guide piece of the wind direction plate 50, and while changing its air flow upward, is smoothly discharged from a blow-out port 4 located on an upper position than the wind direction plate 50 to a room. Thus, the periphery of the combustion part 6 can be prevented from being turned to a high temperature.

Description

  The present invention relates to a heating apparatus capable of obtaining a good heating effect by both radiant heating and hot air heating.

  Conventionally, in this type, the combustion gas generated by the combustion in the burner section is passed through a transparent combustion cylinder that forms a closed combustion chamber connecting the burner section and the heat exchanger, and the combustion cylinder is inward. The incandescent tube provided in is heated to a red-hot state, the red-hot state of the red-cylinder tube is reflected by a reflector surrounding the combustion tube, radiated from the front diffusion glass and radiantly heated, The combustion gas that has passed through is circulated in the heat exchanger above the combustion cylinder, the indoor air is blown to the heat exchanger by a hot air fan, and heat is exchanged with the heat exchanger to produce hot air. There was a heating device that released from the room and heated the room with warm air. (For example, Patent Document 1)

  An air intake port formed in the back plate by air blown by a convection fan that covers the combustion section and heat exchange air section provided in the equipment body with a heat shield and is fixed to the back plate of the equipment body Through the rear opening formed in the back part of the heat shield plate, heat exchange with the combustion part and heat exchange air part, then blow out as warm air from the hot air outlet on the front panel of the equipment body to perform heating operation In the heater, a unit mounting plate for attaching the combustion unit and the heat exchanger unit to the upper part, and a wind direction plate between the combustion unit and the heat exchanger unit, and a part of the blown air from the convection fan is used for the unit mounting plate The floor is overheated by directing it to the cold air passage between the airflow direction plate and the airflow from the bottom of the hot air outlet on the front panel so that hot hot air does not directly hit the floor near the hot air outlet. There was a hot air heater to prevent. (For example, Patent Document 2)

JP 2001-289511 A JP-A-10-267419

  By the way, in this conventional thing, in patent document 1, the inside of an apparatus main part is divided up and down with a lower reflector, the heat exchanger and the combustion cylinder provided with the red-hot cylinder are provided in the upper part, and the lower part is divided. Although the burner part is provided, if this device body is further miniaturized, the space below the partition is also narrowed, and the heat from the burner part becomes very high in the space below it. was there.

  Then, the air guide piece which curved upwards was formed in the back plate side, and patent document 1 which reduced the wind direction board currently disclosed in patent document 2 which formed the cold wind path between the wind direction board and the mounting base. It is conceivable to provide between the burner part in the main body of the apparatus and the pedestal to which the burner part is attached, but simply by providing the wind direction plate of Patent Document 2 below the burner part, However, there is a problem that the warm air blown out from the lower air outlet hits the floor surface in front of the device body and the floor surface becomes hot.

  In order to solve the above-mentioned problems, in claim 1 of the present invention, a substantially box-shaped instrument body, a cradle for placing the instrument body, a combustion part for burning fuel, and a position above the combustion part In a hot air heating apparatus comprising a heat exchanger into which a high-temperature combustion gas generated in the combustion section flows, a convection fan provided on the back of the appliance body, and a blowout port provided on the front of the appliance body, A wind direction plate is provided between the cradle and the combustion section, and an air guide piece inclined upward is formed on the back side of the instrument body of the wind direction plate, and upward on the front side of the instrument body of the wind direction plate. An inclined warm air guide piece is formed, and an air outlet is provided on the front surface of the appliance body 1 above the wind direction plate.

  According to a second aspect of the present invention, there is provided a substantially box-shaped instrument body, a unit mounting plate for forming an upper storage part and a lower storage part in the instrument body, a cradle for mounting the instrument body, and a lower storage part A combustion part that burns fuel, a heat exchanger that is stored in the upper storage part and into which high-temperature combustion gas generated in the combustion part flows, and that air is supplied to the upper and lower storage parts provided on the back of the instrument body. In a warm air heating apparatus provided with a convection fan for blowing air and a blowout port provided on the front surface of the instrument body, a wind direction plate is provided between the cradle and the combustion part, and the instrument body rear side of the wind direction plate An air guide piece inclined upward is formed on the front side of the instrument body of the wind direction plate, and a warm air guide piece inclined upward is formed on the front side of the instrument body. A hot-air heater characterized by providing an air outlet.

  According to a third aspect of the present invention, a cold air passage is formed between the cradle and the lower surface of the wind direction plate, and a cold air outlet is provided for blowing the air that has passed through the cold air passage toward the floor surface on the front surface of the instrument body. It is formed at the boundary between the lower part of the front plate and the table.

  According to a fourth aspect of the present invention, the cold air passage is provided so as to be inclined downward from the back surface to the front surface of the instrument body.

  According to the first aspect of the present invention, an air guide plate is provided between the cradle and the combustion section, and an air guide piece inclined upward is formed on the instrument main body rear side of the wind guide plate, and the wind guide plate is provided. A warm air guide piece inclined toward the front side of the instrument body is formed, and a blower outlet is provided on the front side of the instrument body above the wind direction plate, so that it flows in by a convection fan provided on the back side of the instrument body. A part of the air that has flowed into the surroundings of the combustion part is divided into two parts, the upper part and the lower part of the wind direction plate by the air guide piece of the wind direction plate. The air is guided upward by the warm air guide piece of the wind direction plate so that the air does not stay in the air, and the flow is changed upward, so that the room is smoother than the air outlet provided under the front surface of the instrument body located above the wind direction plate. Is released by the combustion of the combustion section. Those that can prevent the around by heat resulting in very hot.

  In addition, the warm air guide piece of the wind direction plate is inclined upward toward the front side of the instrument body, so that the air flowing through the upper part of the wind direction plate is upward when blown out from the air outlet provided under the front surface of the instrument body. Therefore, the warm air blown out from the air outlet provided under the front of the appliance body flows upward, and the hot air blown out from the air outlet hits the floor surface in front of the appliance body and the floor surface becomes hot. Can be prevented.

  According to the second aspect of the present invention, the wind direction plate is provided between the cradle and the combustion unit, and the air guide piece inclined upward is formed on the instrument body rear side of the wind direction plate. Since the warm air guide piece inclined toward the front side of the instrument body is formed and the air outlet is provided above the wind direction plate on the front face of the instrument body, it flows in by the convection fan provided on the back surface of the instrument body. Part of the air flows into the lower storage part where the combustion part is stored, and the air flowing into the lower storage part is split into two parts, the upper part and the lower part of the wind direction plate, by the air guide piece of the wind direction plate, and flows through the upper part of the wind direction plate The air is guided by the warm air guide piece of the wind direction plate so that the air that has become hot due to the heat of the combustion unit does not stay in the lower housing part, and the air changes its flow upward, so that the device is located above the wind direction plate From the air outlet provided under the front of the main unit Because it is released into the chamber smoothly, but which can prevent the lower housing portion by the heat from the combustion of the combustion section resulting in very hot.

  In addition, the warm air guide piece of the wind direction plate is inclined upward toward the front side of the instrument body, so that the air flowing through the upper part of the wind direction plate is upward when blown out from the air outlet provided under the front surface of the instrument body. Therefore, the warm air blown out from the air outlet provided under the front of the appliance body flows upward, and the hot air blown out from the air outlet hits the floor surface in front of the appliance body and the floor surface becomes hot. Can be prevented.

  According to claim 3, a cold air passage is formed between the cradle and the lower surface of the wind direction plate, and the air that has passed through the cold air passage is blown out toward the floor surface on the front surface of the instrument body. Is formed at the boundary between the lower part of the front plate and the pedestal, so the air flowing through the lower part of the wind direction plate passes through the cold air passage formed between the pedestal and the lower surface of the wind direction plate, and passes through the cold air passage. The blown air is blown out from the cold air blowing port formed at the boundary between the lower portion of the front plate and the pedestal toward the floor surface on the front surface of the device body, and is thereby blown out from the air outlet provided on the front surface of the device body. In addition to preventing the hot air from hitting the floor in front of the instrument body and causing the floor to become hot, it is possible to prevent the cradle from becoming hot and to prevent the temperature of the floor under the cradle from rising. is there.

  According to the fourth aspect of the present invention, the cold air passage is provided so as to be inclined downward from the back surface to the front surface of the appliance main body, so that air passing through the cold air passage from the cold air outlet to the floor surface on the front surface of the appliance main body. Thus, it is possible to prevent the warm air blown out from the blower outlet provided on the front surface of the instrument body from hitting the floor surface in front of the instrument body and causing the floor surface to become hot.

The front perspective view of the warm air heating device which shows one Embodiment of this invention. The front perspective view of the state which removed the front plate. Side surface sectional drawing of the same warm air heating apparatus. The rear view. The disassembled perspective view of the same heat exchanger and an outer cylinder part.

Next, an embodiment of a heating device to which the present invention is applied will be described with reference to the drawings.
1 is a vertically long main body for heating by hot air and radiation, 2 is an operation unit provided with a plurality of buttons capable of setting a heating operation, a heating power in the heating operation, and the like, 3 is a set temperature during normal heating operation, A display unit for displaying the room temperature, displaying a predetermined error code when an abnormality occurs and notifying the user of the abnormality, and 4 are formed at two locations above and below the front plate 5 installed on the front surface of the instrument body 1. This is an outlet that blows wind into the room.

  Reference numeral 6 denotes a combustion section, which detects a temperature of the vaporizing cylinder 9 installed at a lower portion of the vaporizing cylinder 9 and a vaporizing cylinder 9 that heats and vaporizes a predetermined amount of fuel sent from the electromagnetic pump 7 by the vaporizing heater 8. A pot thermistor 10 that is installed above the vaporizing cylinder 9, a flame adjusting cylinder 12 that uniformly mixes with primary air and releases vaporized fuel oil from the flame hole of the burner head 11, and a flame hole of the burner head 11 The spark plug 13 is ignited by spark discharge to the vaporized fuel discharged from the flame, and the flame rod 14 is used to monitor the state of the flame mixed with the secondary air that is ignited by the spark plug 13 and blown from a wind tunnel (not shown). Yes.

  15 is an incandescent tube that is heated by the combustion unit 6 and glows red, 16 is an outer tube made of heat-resistant glass that covers the periphery of the red-hot tube 15, and 17 is a reflector provided on the back side of the outer tube 16, The red heat state of the red heat cylinder 15 is reflected and radiated into the room through a radiant window 18 made of a glass plate to perform radiant heating.

  19 is a combustion fan installed in the lower left part of the instrument main body 1 when viewed from the front, and is optimal for the thermal power set by the operation unit 2 by feedback control of the rotational speed detected by a rotational speed detection device (not shown). It is driven at a rotational speed that provides an air-fuel ratio.

  20 is a heat exchanger provided above the outer cylinder 16 and provided with a plurality of pipes, and the combustion gas after passing through the red hot cylinder 15 circulates in each pipe to exchange heat with room air, Hot air is heated together with radiant heating by blowing warm air into the room from an outlet 4 formed on the front surface of the appliance body 1.

  Reference numeral 21 denotes a convection fan installed on the back of the instrument body 1 and covered with a fan guard 22. The convection fan 21 is driven at a predetermined number of revolutions according to the heating power set by the operation unit 2 and is heated by the heat exchanger 20. The heated air is blown into the room from the outlet 4 as warm air.

  Reference numeral 23 denotes an air supply / exhaust cylinder provided on the back surface of the appliance body 1, and an air supply hose 24 that guides air taken from the outside to the combustion fan 19, and exhaust gas heat-exchanged with room air by the heat exchanger 20 to the outside. An exhaust hose 25 to be discharged is connected, and heating operation can be performed without polluting indoor air.

  26 is provided on the heat exchange top plate 27 above the heat exchanger 20 to detect a predetermined high temperature, and 28 is provided on the heat exchange top plate 27 similarly to the overheat prevention thermo 26 to prevent the overheating. This is a hot air temperature sensor that detects a predetermined low temperature lower than that of the thermo 26, and detects the temperature in the vicinity of the heat exchanger 20 to monitor whether there is any abnormality in the heating operation.

  Reference numeral 29 denotes a power plug that is plugged into a household outlet and supplies power to the appliance main body 1. Reference numeral 30 denotes an exhaust path for detecting that the connection portion between the air supply / exhaust cylinder 23 and the exhaust hose 25 has been disconnected due to disconnection of the lead wire. A disconnection detection lead wire 31 is an indoor temperature sensor for detecting the indoor temperature.

  32 is an operation button for instructing the start and stop of the heating operation, 33 is an eco button for setting an eco mode in which the maximum thermal power is suppressed and power consumption and fuel consumption are reduced, and 34 is a triangular shape with apexes facing up and down. Up and down buttons that can set the thermal power and time with buttons, 35 is an automatic / manual button that switches between automatic operation that automatically adjusts the thermal power with respect to the set room temperature and manual operation that manually adjusts the thermal power, and 36 is the current set temperature and Regardless of the set thermal power, a small thermal power button 37 that prevents the room from being overheated by reducing it to the minimum thermal power, 37 is a timer button that starts the heating operation at a set time, and is provided in the operation unit 2.

  Reference numeral 38 denotes a front guard that surrounds the front plate 5 provided in front of the instrument body 1 and prevents burns by avoiding direct contact with the air outlet 4 and the radiation window 18.

  39 is a front side plate which forms part of the instrument main body 1 and is provided on the side of the front plate 5 and which has a plurality of slits 40 in the vertical direction as openings facing the front plate 5. Since the air taken into the appliance main body 1 by the fan 21 passes through the back side of the reflector 17 and blows out from the slit 40, the low-temperature air is passed through the slit 40 from the slit 40 without passing through the high-temperature vaporizing cylinder 9 or the heat exchanger 20. It is something that blows out.

  A control unit 41 is provided in a space formed by the right side plate of the instrument body 1 and the reflection plate 17 and is configured by a microcomputer. The combustion fan 19 and the convection fan 21 are based on instructions from the buttons of the operation unit 2. And the current room temperature and time detected by the room temperature sensor 31 are displayed on the display unit 3.

  Reference numeral 42 denotes a heat collecting unit, which includes the heat exchanger 20 at the top and the red tube 15 and the outer tube 16 that encloses the red tube 15 at the bottom, and the outer tube 16 is connected to the combustion unit 6 and the heat collecting unit 42. They communicate with each other as a sealed space.

Reference numeral 43 denotes a heat collecting portion fixing portion, which is provided at both ends of the heat collecting portion 42 and has screw holes 44, which fix the heat collecting portion 42 with screws.
Reference numeral 45 denotes a heat exchanger fixing bracket, which forms a fixing hole 46 and fixes the heat collecting part fixing part 43 to the fixing hole 46 with screws, and fixes one end of the fixing part 4 to the reflecting plate 17 by bending it. A plate-like fixing piece 48 and a plate-like heat shielding piece 49 for bending the other end of the fixing portion 47 and preventing the red heat of the red hot cylinder 15 from heating the reflector plate 17. The piece 49 is longer than the fixed piece 48 and has the same width as the diameter of the red-hot cylinder 15, and the tip of the heat-shielding piece 49 is located slightly above the lower end of the red-hot cylinder 15.

  The length of the heat shield piece 49 needs to be long enough to block the heat of the red hot tube 15 so that the reflector 17 is not overheated by the heat of the red hot tube 15, and the heat from the red hot tube 15 is small. If the reflector 17 is not so much heated, it may be short, and if the heat from the red-hot cylinder 15 is large and the reflector 17 is overheated, the tip of the heat shield piece 49 is the lower end of the red-hot cylinder 15. It is lengthened so that it is located up to the vicinity.

  50 is a wind direction plate fixed to the upper surface of the cradle 51 on which the instrument main body 1 is placed, and is positioned between the cradle 51 and the vaporizing cylinder 9 of the combustor 6, and on the back side of the instrument main body 1 An air guide piece 52 inclined toward the upper surface is formed, and a warm air guide piece 53 inclined upward is formed on the front side of the instrument main body 1. A cold air passage 54 is formed between the air and the air passing through the cold air passage 54 from the cold air outlet 55 formed at the boundary between the lower portion of the front plate 5 and the pedestal 51 toward the floor surface in front of the instrument body 1. It will be blown out.

  Reference numeral 56 denotes a unit mounting plate. The outer cylinder 16 is attached to the upper surface and the combustion section 6 is attached to the lower face. The upper storage section 57 in which the heat exchanger 20 and the outer cylinder 16 are stored in the instrument body 1, and the combustion section 6 The lower storage part 58 to be stored is formed.

Next, details of the heating operation in the heating apparatus will be described.
First, when the operation button 32 of the operation unit 2 is operated, the vaporizing heater 8 is energized to heat the inside of the vaporizing cylinder 9, and when the pot thermistor 10 detects 150 ° C. or higher, the combustion fan 19 is driven at a predetermined rotational speed for combustion. After the air is blown and the pot thermistor 10 detects 210 ° C. or higher, the electromagnetic pump 7 is turned on to inject and vaporize a predetermined amount of fuel into the vaporizing cylinder 9, and the spark plug 13 is energized to generate a spark current. Ignite by generating.

  After ignition, it is determined whether the flame current value detected by the frame rod 14 is equal to or greater than a predetermined value to determine whether ignition is successful. If the ignition is successful, the convection fan 21 is driven to start heating operation. Then, the combustion gas generated by the combustion rises while completely burning in the combustion unit 6 and heats the red hot cylinder 15 to be in a red hot state, and then circulates in the heat exchanger 20 through the heat collecting unit 42. By driving a convection fan 21 that is discharged from the air supply / exhaust tube 23 to the outdoors and provided on the back surface of the instrument main body 1, the indoor air sucked from the back surface of the instrument main body 1 flows around the heat exchanger 20 and the outer cylinder 16. In addition to being discharged into the room as warm air, the radiant heat is reflected from the red hot tube 15 through the transparent outer tube 16 to the front of the instrument body 1 by the reflector 17 to perform radiant heating.

  At this time, part of the air that has flowed in by the convection fan 21 provided on the back surface of the instrument body 1 flows into the upper storage portion 57 and passes through the outer periphery of the heat exchanger 20 and the outer cylinder 16 to become hot air. The other part of the air flows into the lower storage part 58 and the air that has flowed into the lower storage part 58 is discharged into the room through the air outlets 4 provided at the top and bottom of the front surface of the instrument body 1. The air guide piece 52 of the wind direction plate 50 is divided into two parts, the upper part and the lower part of the wind direction plate 50, and the air flowing through the upper part of the wind direction plate 50 is retained in the lower storage part 58 due to the heat of the combustion part 6. The air flow is guided upward by the warm air guide piece 53 of the wind direction plate 50 so as to change the flow upward, and thereby smoother than the air outlet 4 provided below the front surface of the instrument body 1 located above the wind direction plate 50. Since it is discharged indoors, the combustion part 6 is stored. That that space be space of the lower housing portion 58 is narrowed due to the heat from the combustion of the combustion portion 6 are those which can prevent the very hot.

  Further, since the warm air guide piece 53 of the wind direction plate 50 is inclined upward toward the front surface side of the instrument body 1, the air flowing above the wind direction plate 50 is blown below the front surface of the instrument body 1. Since the air is blown upward when blown from the outlet 4, the warm air blown from the blower outlet 4 provided under the front surface of the instrument body 1 is made to flow upward, whereby the warm air blown from the blower outlet 4 is forward of the instrument body 1. It is possible to prevent the floor surface from getting hot when hitting the floor surface.

  Further, the air flowing under the wind direction plate 50 passes through the cold air passage 54 formed between the cradle 51 and the lower surface of the air direction plate 50, and the air passing through the cold air passage 54 is placed with the lower portion of the front plate 5. Since the cold air blowing port 55 formed at the boundary with the base 51 is blown out toward the floor surface on the front surface of the appliance main body 1, the warm air blown out from the outlet 4 provided on the front surface of the appliance main body 1 is blown out. It is possible to prevent the floor surface from reaching a high temperature by hitting the floor surface in front of the appliance body 1 and to prevent the cradle 51 from becoming hot to prevent the temperature of the floor surface under the cradle 51 from rising. is there.

  Furthermore, since the cold air passage 54 is inclined downward from the back surface of the appliance body 1 toward the front surface, the air that has passed through the cold air passage 54 is reliably transferred from the cold air outlet 55 toward the floor surface in front of the appliance body 1. It is possible to prevent the warm air blown out and blown out from the air outlet 4 provided on the front surface of the instrument body 1 from hitting the floor surface in front of the instrument body 1 and causing the floor surface to become hot.

  At this time, the air flowing in by the convection fan 21 provided on the back surface of the instrument body 1 is provided to spread forward by the heat shield pieces 49 of the heat exchanger fixing bracket 45 located on both sides of the outer cylinder 16. Rather than the air that spreads from the front of the instrument body 1 to the left and right along the reflecting plate 17, the instrument body 1 is guided by the heat shield piece 49 and goes straight between the outer cylinder 16 and the heat shield piece 49. Even when the instrument body 1 is installed on a mantelpiece or the like that is surrounded by walls on the three sides of the side and back, the warm air blown from the front of the instrument body 1 It hardly prevents flow toward the wall, and the side wall can be prevented from becoming hot.

  Further, the heat of the red-hot cylinder 15 that has been heated to a red-hot state is blocked by the heat-shielding piece 49 of the heat exchanger fixture 45 and does not overheat the reflector 17, thereby reflecting the side plate of the instrument body 1. The temperature in the space formed by the plate 17 does not become high, and the control unit 41 and other electrical components made of a substrate provided in the space formed by the side plate of the instrument body 1 and the reflector 17 also have a high temperature. It is possible to prevent abnormalities from occurring.

  When the ignition is successful and the heating operation is started, the control unit 41 checks whether the automatic / manual button 35 of the operation unit 2 is set to automatic or manual, and the automatic / manual button 35 sets automatic. If so, the rotational speed of the combustion fan 19 and the amount of fuel sent from the electromagnetic pump 7 into the vaporizing cylinder 9 are adjusted to increase or decrease the combustion amount so that the room temperature rises to the indoor set temperature set by the up / down button 34, The temperature of the convection fan 21 is increased or decreased to adjust the warm air blown into the room, and the room temperature detected by the room temperature sensor 31 is compared with the set room temperature for heating operation with the optimum heating power. If manual is set by the automatic / manual button 35, the rotational speed of the combustion fan 19 and the vaporizing cylinder from the electromagnetic pump 7 according to the heating power from 1 to 6 lights set by the up / down button 34 Fuel sent in 9 Adjusting the amount, by adjusting the rotational speed of the convection fan 21 to vary the intensity of hot air to be blown into the room, and performs heating operation of thermal power set by the user.

  When the heating operation is started, a part of the air from the convection fan 21 flows into the space formed by the side plate of the instrument body 1 and the reflecting plate 17, and the inflowed air is the front side plate 39. The plurality of slits 40 formed on the front plate 5 are blown out toward the recesses formed between the blower outlet 4 of the front plate 5 and the front side plate 39, and the air blown out from the slits 40 becomes an air curtain. Since the warm air flowing in the lateral direction of 1 is guided to the front direction, the warm air blown out from the front surface of the instrument body 1 hardly flows toward the lateral wall, and the lateral wall becomes hot. Can be further prevented.

DESCRIPTION OF SYMBOLS 1 Instrument main body 4 Air outlet 6 Combustion part 15 Red hot cylinder 16 Outer cylinder 17 Reflector plate 20 Heat exchanger 21 Convection fan 50 Wind direction board 51 Stand 52 Air guide piece 53 Hot air guide piece

Claims (4)

  A substantially box-shaped instrument body, a table on which the instrument body is placed, a combustion section that burns fuel, and a heat exchanger that is located above the combustion section and into which high-temperature combustion gas generated in the combustion section flows And a warm air heating device comprising a convection fan provided on the back of the appliance body and a blowout port provided on the front of the appliance body, a wind direction plate is provided between the cradle and the combustion section, and the wind direction An air guide piece inclined upward is formed on the instrument body rear side of the plate, and a warm air guide piece inclined upward is formed on the instrument body front side of the wind direction plate. A hot air heating apparatus characterized in that an air outlet is provided above the wind direction plate.   A substantially box-shaped instrument body, a unit mounting plate that forms an upper storage part and a lower storage part in the instrument body, a cradle for mounting the instrument body, and a fuel stored in the lower storage part A combustion section, a heat exchanger into which high-temperature combustion gas generated in the combustion section and stored in the upper storage section flows, a convection fan provided on the back of the apparatus main body for blowing air to the upper storage section and the lower storage section, and an apparatus In the warm air heating device provided with the air outlet provided on the front surface of the main body, a wind direction plate is provided between the cradle and the combustor, and the air direction plate is inclined upward toward the instrument main body rear side. An air guide piece is formed, a warm air guide piece inclined upward is formed on the front side of the instrument body of the wind direction plate, and an outlet is provided on the front side of the instrument body above the wind direction plate. A featured hot air heater.   A cold air passage is formed between the cradle and the lower surface of the wind direction plate, and a cold air outlet for blowing the air that has passed through the cold air passage toward the floor surface on the front surface of the instrument body is provided on the lower portion of the front plate and the cradle. The hot air heating device according to claim 2, wherein the hot air heating device is formed at a boundary between the two.   The warm air heating device according to claim 3, wherein the cold air passage is provided so as to be inclined downward from the back surface to the front surface of the appliance body.

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