US20110057047A1 - Hot air heater - Google Patents
Hot air heater Download PDFInfo
- Publication number
- US20110057047A1 US20110057047A1 US12/876,573 US87657310A US2011057047A1 US 20110057047 A1 US20110057047 A1 US 20110057047A1 US 87657310 A US87657310 A US 87657310A US 2011057047 A1 US2011057047 A1 US 2011057047A1
- Authority
- US
- United States
- Prior art keywords
- housing
- heat exchanger
- supporting plate
- hot air
- burner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
- F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
- F24H3/087—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using fluid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/008—Details related to central heating radiators
- F24D19/0082—Humidifiers for radiators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
- F28F9/0131—Auxiliary supports for elements for tubes or tube-assemblies formed by plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/08—Fins with openings, e.g. louvers
Definitions
- the present invention relates to a hot air heater (or forced flue heater) that heats the room air by combustion gas from a burner through a heat exchanger.
- this kind of hot air heater is provided with a supporting plate for supporting the heat exchanger inside the housing.
- the supporting plate is ordinarily constituted by a simple plate member and is generally fixed to the inside of the housing by means of screws.
- the heat exchanger when a fuel is burned in the burner, will reach a relatively high temperature.
- the heat from the heat exchanger will be transmitted through the supporting plate to that part of the housing to which the supporting plate is fixed by screwing, with the result that such a part will reach a high temperature.
- Patent Document 1 JP-A-2003-121004
- this invention is a hot air heater comprising: a housing having formed therein an inlet port for sucking room air and an outlet port; a circulation fan, a burner, and a heat exchanger, all being housed in the housing.
- the heat exchanger is arranged to cause combustion gas from the burner to flow through an inside of the heat exchanger so that the room air sucked by operating the circulation fan into the inlet port is heated by the heat exchanger for blowing forward as hot air out of the outlet port.
- a supporting plate is disposed to support the heat exchanger inside the housing, and the supporting plate is provided with a radiating fin.
- the heat that is transmitted from the heat exchanger to the supporting plate is radiated from the radiating fin.
- the amount of heat to be transmitted to the housing through the supporting plate is reduced and, consequently, the temperature increase in the housing can be limited.
- the thermal efficiency is improved.
- the radiating fin is disposed such that a plate surface of the fin obliquely crosses the direction of flow of the air from the circulation fan. According to this arrangement, the heat exchange between the radiating fin and the flow of the air is performed efficiently. As a result, the reduction in the amount of heat transfer to the housing and also the heating of the air can be accelerated.
- the radiating fin is made up of a cut-and-raised piece formed in the supporting plate.
- the cost can be reduced by minimizing the number of constituent parts.
- the opening that is formed by the cut-and-raised piece of the radiating fin contributes to the reduction in the heat transfer area of the supporting plate. Consequently, the amount of heat transfer to the housing can further reduced.
- FIG. 1 is a perspective view of a hot air heater according to an embodiment of this invention
- FIG. 2 is a sectional side view of the hot air heater according to the embodiment of this invention.
- FIG. 3 is a sectional front view taken along the line III-III in FIG. 2 ;
- FIG. 4 is an enlarged plan view, partly shown in section, of a main part taken along the line IV-IV in FIG. 3 ;
- FIG. 5 is a perspective view of a main part of the hot air heater according to an embodiment of this invention.
- reference numeral 1 denotes a housing of a hot air heater according to an embodiment of this invention.
- the housing 1 is made up of: a main body constituted by a rear plate part 11 , a right-side side-plate part 12 and a left-side side-plate part 12 , a top plate part 13 , and a bottom plate part 14 ; and a front panel 15 which covers the front surface of the main body.
- an operation panel 16 On the top plate part 13 of the housing 1 there is provided an operation panel 16 . Further, on an outer surface of the rear plate part 11 of the housing 1 , there is disposed a guard frame 17 which encloses the piping space among a supply and exhaust duct (not illustrated) which extends outdoors, an exhaust pipe 53 , and a combustion fan 6 .
- the circulation fan 2 is disposed inside a fan casing 21 which faces the inlet port 1 a , and is constituted by an oblong cross flow fan driven by a motor 22 .
- an air passage 3 which connects the fan casing 21 and the outlet port 1 b together.
- the air passage 3 is enclosed by: the rear plate part 11 ; a first lateral partition plate 31 which is disposed on the inside of the left-side side-plate part 12 (left as seen in FIG. 3 ); a second lateral partition plate 32 which extends downward from the right end part, as seen in FIG. 3 , of the fan casing 21 ; a lower partition plate 33 which is disposed slightly below the lower end of the outlet port 1 b ; and a front partition plate 34 which extends downward from the front edge of the fan casing 21 .
- a cylindrical burner 4 which is supplied with a fuel gas through a gas valve unit 41 and a pipe 42 connected thereto, the burner 4 being housed in a manner to pass through a lower part of the second lateral partition plate 32 .
- a heat exchanger 5 which is positioned inside the air passage 3 and which causes the combustion gas (flue gas) of the burner 4 to flow through the inside. It is thus so arranged that the room air sucked from the inlet port 1 a by operating the circulation fan 2 is heated by the heat exchanger 5 and is blown out of the outlet port 1 b into the room as hot air.
- a combustion fan 6 which supplies the burner 4 with outside air as combustion air through an air supply duct section of the supply and exhaust duct.
- the combustion fan 6 is constituted by a centrifugal fan which is driven by a motor 62 and which is disposed inside a fan casing 61 that is fixed to the rear plate part 11 of the housing 1 .
- a humidification water reservoir 7 to be filled with water is disposed below the lower partition plate 33 . It is thus so arranged that the hot air is supplied with steam through an opening 33 a formed through the lower partition plate 33 . That lower end part 15 a of the front panel 15 which lies below the outlet port 1 b is arranged to be detachable so that the humidification water reservoir 7 can be taken out of position for refilling it with water.
- the heat exchanger 5 is provided with: a combustion tube 51 which extends leftward as seen in FIG. 3 from the burner 4 ; a bellows-type of heat exchange tube 52 which is laterally disposed above the combustion tube 51 ; and an exhaust pipe 53 which is laterally disposed between the combustion tube 51 and the heat exchange tube 52 .
- the left end of the combustion tube 51 which corresponds to the downstream end thereof, and the left end of the heat exchange tube 52 , which corresponds to an upstream end thereof, are brought into fluid flow communication with each other through a box 54 .
- the right end of the heat exchange tube 52 which corresponds to the downstream end thereof, and the right end of the exhaust pipe 53 , which corresponds to the upstream end thereof, are brought into fluid flow communication with each other through a box 55 . It is thus so arranged that the combustion gas (flue gas) flows through the combustion tube 51 , the box 54 , the heat exchange tube 52 , and the box 55 into the exhaust pipe 53 .
- the downstream end of the exhaust pipe 53 is projected out of the rear surface of the housing 1 through the rear plate part 11 and is connected to an exhaust duct part of the supply and exhaust duct.
- the heat exchanger 5 is supported by a supporting plate 8 inside the housing 1 .
- this supporting plate 8 has: a front plate part 81 which is fixed with screws 81 a to a fixing part 31 a formed by cutting and raising the first lateral partition plate 31 ; and a side plate part 82 which is bent rearward from laterally inner edge part of the front plate part 81 and which is fixed with screws 82 a to the outside surface of the box 54 of the heat exchanger 5 .
- a flange part 83 which is intended to close the openings that were formed as a result of cutting and raising of the fixing part 31 a of the first lateral partition plate 31 .
- a flange part 84 which comes into abutment with the rear plate part 11 of the housing 1 .
- the flange part 84 is engaged with a hook part 11 a provided in the rear plate part 11 at an engaging hole 84 a that is formed in the flange part 84 .
- the heat from the heat exchanger 5 will be transmitted through the supporting plate 8 to the first lateral partition plate 31 or to the rear plate part 11 , with the result that the housing 1 rises in temperature.
- the supporting plate 8 there are disposed a plurality of radiating fins 85 in the front plate part 81 and in the side plate part 82 , respectively, of the supporting plate 8 .
- the heat transmitted from the heat exchanger 5 to the supporting plate 8 is radiated from the radiating fins 85 .
- the amount of heat to be transmitted to the housing 1 through the supporting plate 8 is reduced and, consequently, the temperature rise in the housing 1 can be limited.
- the air that flows around the supporting plate 8 is heated by radiation from the radiating fins 85 .
- the supporting plate 8 functions efficiently as a heat exchange member, and the thermal efficiency also improves.
- Each of the radiating fins 85 is disposed in a manner such that the plate surface thereof obliquely crosses the direction of flow of the air from the circulation fan 2 (i.e., crosses the vertical direction at an inclination). Therefore, the heat exchange takes place efficiently between the radiating fins 85 and the air flow, with the result that the reduction in the amount of heat transfer to the housing 1 and also the heating of the air can be accelerated.
- the radiating fins 85 may be considered to form the radiating fins 85 in a plate member that is separate from the supporting plate 8 and then to fix the radiating fins 85 to the supporting plate 8 by means of welding, and the like.
- This solution brings about an increase in the number of parts and a higher cost.
- the radiating fins 85 are constituted by cut-and-raised pieces that are formed in the supporting plate 8 . According to this arrangement, the radiating fins made of separate members are not required, and the cost can be reduced. In addition, the heat transmitting area of the supporting plate 8 is narrowed due to the presence of the holes 85 a that are formed as a result of cutting-and-raising of the radiating fins 85 . Therefore, the amount of heat transmission to the housing 1 is further reduced, and the temperature rise in the housing 1 can more effectively be limited.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Direct Air Heating By Heater Or Combustion Gas (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
A hot air heater has a housing having formed therein an inlet port for sucking room air and an outlet port. A circulation fan, a burner, and a heat exchanger which causes to flow combustion gas from the burner through an inside of the heat exchanger are housed in the housing. The room air sucked by operation of the circulation fan into the inlet port is heated by the heat exchanger for blowing forward as hot air out of the outlet port. A supporting plate is disposed to support the heat exchanger inside the housing. In order to limit the temperature increase in the housing by heat transmission through the supporting plate, and in order to improve the thermal efficiency, the supporting plate is provided with radiating fins. Preferably, the radiating fins are made up of cut-and-raised pieces formed in the supporting plate.
Description
- This application claims priority under 35 U.S.C. §119 to Japanese Patent Application No. 2009-206672, filed Sep. 8, 2009, which is incorporated by reference.
- 1. Technical Field
- The present invention relates to a hot air heater (or forced flue heater) that heats the room air by combustion gas from a burner through a heat exchanger.
- 2. Related Art
- As this kind of hot air heater, there is known one having the following construction. Within a housing having formed therein an inlet port for sucking room air and an outlet port, there are housed a circulation fan, a burner, and a heat exchanger which is arranged to cause to flow combustion gas (or flue gas) from the burner through an inside of the heat exchanger. The air sucked from the inlet port by the operation of the circulation fan is heated by the heat exchanger and is blown out of the outlet port as hot air (see, e.g., Patent Document 1).
- Although not disclosed in Patent Document 1, this kind of hot air heater is provided with a supporting plate for supporting the heat exchanger inside the housing. The supporting plate is ordinarily constituted by a simple plate member and is generally fixed to the inside of the housing by means of screws.
- It is, however, to be noted that the heat exchanger, when a fuel is burned in the burner, will reach a relatively high temperature. The heat from the heat exchanger will be transmitted through the supporting plate to that part of the housing to which the supporting plate is fixed by screwing, with the result that such a part will reach a high temperature.
- Patent Document 1: JP-A-2003-121004
- In view of the above problems, it is an advantage of the invention to provide a hot air heater in which the temperature increase in the housing by heat transmission through the supporting plate can be limited and in which the thermal efficiency can be improved.
- In order to solve the above-mentioned problems, this invention is a hot air heater comprising: a housing having formed therein an inlet port for sucking room air and an outlet port; a circulation fan, a burner, and a heat exchanger, all being housed in the housing. The heat exchanger is arranged to cause combustion gas from the burner to flow through an inside of the heat exchanger so that the room air sucked by operating the circulation fan into the inlet port is heated by the heat exchanger for blowing forward as hot air out of the outlet port. In the above-mentioned hot air heater, a supporting plate is disposed to support the heat exchanger inside the housing, and the supporting plate is provided with a radiating fin.
- According to the invention, the heat that is transmitted from the heat exchanger to the supporting plate is radiated from the radiating fin. The amount of heat to be transmitted to the housing through the supporting plate is reduced and, consequently, the temperature increase in the housing can be limited. At the same time, since the air flowing around the supporting plate gets heated by the heat radiation from the radiating fin, the thermal efficiency is improved.
- Preferably, the radiating fin is disposed such that a plate surface of the fin obliquely crosses the direction of flow of the air from the circulation fan. According to this arrangement, the heat exchange between the radiating fin and the flow of the air is performed efficiently. As a result, the reduction in the amount of heat transfer to the housing and also the heating of the air can be accelerated.
- In this invention, preferably, the radiating fin is made up of a cut-and-raised piece formed in the supporting plate. According to this arrangement, unlike a case in which a radiating fin in the form of a member separate from the supporting plate is fixed to the supporting plate, the cost can be reduced by minimizing the number of constituent parts. Further, the opening that is formed by the cut-and-raised piece of the radiating fin contributes to the reduction in the heat transfer area of the supporting plate. Consequently, the amount of heat transfer to the housing can further reduced.
- The invention will now be described with reference to the accompanying drawings in which:
-
FIG. 1 is a perspective view of a hot air heater according to an embodiment of this invention; -
FIG. 2 is a sectional side view of the hot air heater according to the embodiment of this invention; -
FIG. 3 is a sectional front view taken along the line III-III inFIG. 2 ; -
FIG. 4 is an enlarged plan view, partly shown in section, of a main part taken along the line IV-IV inFIG. 3 ; and -
FIG. 5 is a perspective view of a main part of the hot air heater according to an embodiment of this invention. - With reference to
FIGS. 1 through 3 , reference numeral 1 denotes a housing of a hot air heater according to an embodiment of this invention. The housing 1 is made up of: a main body constituted by arear plate part 11, a right-side side-plate part 12 and a left-side side-plate part 12, atop plate part 13, and abottom plate part 14; and afront panel 15 which covers the front surface of the main body. There are formed, on an upper portion of therear plate part 11, an inlet port la for sucking the room air and, on a lower part of thefront panel 15, an outlet port lb. - On the
top plate part 13 of the housing 1 there is provided anoperation panel 16. Further, on an outer surface of therear plate part 11 of the housing 1, there is disposed aguard frame 17 which encloses the piping space among a supply and exhaust duct (not illustrated) which extends outdoors, anexhaust pipe 53, and a combustion fan 6. - At an upper inside portion of the housing 1 there is housed a
circulation fan 2. Thecirculation fan 2 is disposed inside afan casing 21 which faces theinlet port 1 a, and is constituted by an oblong cross flow fan driven by amotor 22. - Inside the housing 1 there is defined an
air passage 3 which connects thefan casing 21 and theoutlet port 1 b together. Theair passage 3 is enclosed by: therear plate part 11; a firstlateral partition plate 31 which is disposed on the inside of the left-side side-plate part 12 (left as seen inFIG. 3 ); a second lateral partition plate 32 which extends downward from the right end part, as seen inFIG. 3 , of thefan casing 21; alower partition plate 33 which is disposed slightly below the lower end of theoutlet port 1 b; and afront partition plate 34 which extends downward from the front edge of thefan casing 21. - Inside the housing 1 there is further housed a cylindrical burner 4 which is supplied with a fuel gas through a
gas valve unit 41 and apipe 42 connected thereto, the burner 4 being housed in a manner to pass through a lower part of the second lateral partition plate 32. There is also housed aheat exchanger 5 which is positioned inside theair passage 3 and which causes the combustion gas (flue gas) of the burner 4 to flow through the inside. It is thus so arranged that the room air sucked from theinlet port 1 a by operating thecirculation fan 2 is heated by theheat exchanger 5 and is blown out of theoutlet port 1 b into the room as hot air. - Inside the housing 1 there is also housed a combustion fan 6 which supplies the burner 4 with outside air as combustion air through an air supply duct section of the supply and exhaust duct. The combustion fan 6 is constituted by a centrifugal fan which is driven by a
motor 62 and which is disposed inside afan casing 61 that is fixed to therear plate part 11 of the housing 1. In addition, ahumidification water reservoir 7 to be filled with water is disposed below thelower partition plate 33. It is thus so arranged that the hot air is supplied with steam through anopening 33 a formed through thelower partition plate 33. Thatlower end part 15 a of thefront panel 15 which lies below theoutlet port 1 b is arranged to be detachable so that thehumidification water reservoir 7 can be taken out of position for refilling it with water. - The
heat exchanger 5 is provided with: acombustion tube 51 which extends leftward as seen inFIG. 3 from the burner 4; a bellows-type ofheat exchange tube 52 which is laterally disposed above thecombustion tube 51; and anexhaust pipe 53 which is laterally disposed between thecombustion tube 51 and theheat exchange tube 52. The left end of thecombustion tube 51, which corresponds to the downstream end thereof, and the left end of theheat exchange tube 52, which corresponds to an upstream end thereof, are brought into fluid flow communication with each other through abox 54. Also, the right end of theheat exchange tube 52, which corresponds to the downstream end thereof, and the right end of theexhaust pipe 53, which corresponds to the upstream end thereof, are brought into fluid flow communication with each other through abox 55. It is thus so arranged that the combustion gas (flue gas) flows through thecombustion tube 51, thebox 54, theheat exchange tube 52, and thebox 55 into theexhaust pipe 53. The downstream end of theexhaust pipe 53 is projected out of the rear surface of the housing 1 through therear plate part 11 and is connected to an exhaust duct part of the supply and exhaust duct. - The
heat exchanger 5 is supported by a supportingplate 8 inside the housing 1. As shown inFIGS. 4 and 5 , this supportingplate 8 has: afront plate part 81 which is fixed withscrews 81 a to afixing part 31 a formed by cutting and raising the firstlateral partition plate 31; and aside plate part 82 which is bent rearward from laterally inner edge part of thefront plate part 81 and which is fixed withscrews 82 a to the outside surface of thebox 54 of theheat exchanger 5. On a laterally outward edge part of thefront plate part 81, there is formed, by bending, aflange part 83 which is intended to close the openings that were formed as a result of cutting and raising of thefixing part 31 a of the firstlateral partition plate 31. On a rear edge part of theside plate part 82, there is formed, by bending, aflange part 84 which comes into abutment with therear plate part 11 of the housing 1. Theflange part 84 is engaged with ahook part 11 a provided in therear plate part 11 at anengaging hole 84 a that is formed in theflange part 84. - With the above-mentioned arrangement as it is, the heat from the
heat exchanger 5 will be transmitted through the supportingplate 8 to the firstlateral partition plate 31 or to therear plate part 11, with the result that the housing 1 rises in temperature. - As a solution, in this embodiment, there are disposed a plurality of radiating
fins 85 in thefront plate part 81 and in theside plate part 82, respectively, of the supportingplate 8. According to this arrangement, the heat transmitted from theheat exchanger 5 to the supportingplate 8 is radiated from the radiatingfins 85. The amount of heat to be transmitted to the housing 1 through the supportingplate 8 is reduced and, consequently, the temperature rise in the housing 1 can be limited. At the same time, the air that flows around the supportingplate 8 is heated by radiation from the radiatingfins 85. In other words, the supportingplate 8 functions efficiently as a heat exchange member, and the thermal efficiency also improves. - Each of the radiating
fins 85 is disposed in a manner such that the plate surface thereof obliquely crosses the direction of flow of the air from the circulation fan 2 (i.e., crosses the vertical direction at an inclination). Therefore, the heat exchange takes place efficiently between the radiatingfins 85 and the air flow, with the result that the reduction in the amount of heat transfer to the housing 1 and also the heating of the air can be accelerated. - Alternatively, it may be considered to form the radiating
fins 85 in a plate member that is separate from the supportingplate 8 and then to fix the radiatingfins 85 to the supportingplate 8 by means of welding, and the like. This solution, however, brings about an increase in the number of parts and a higher cost. - As a solution, in this embodiment, the radiating
fins 85 are constituted by cut-and-raised pieces that are formed in the supportingplate 8. According to this arrangement, the radiating fins made of separate members are not required, and the cost can be reduced. In addition, the heat transmitting area of the supportingplate 8 is narrowed due to the presence of theholes 85 a that are formed as a result of cutting-and-raising of the radiatingfins 85. Therefore, the amount of heat transmission to the housing 1 is further reduced, and the temperature rise in the housing 1 can more effectively be limited. - A description has so far been made of an embodiment of this invention. This invention is, however, not limited to the above-mentioned embodiment. For example, although in the above-mentioned embodiment, the outdoor air is supplied to the burner 4 as combustion air, it is also possible to supply the indoor air to the burner 4 as combustion air.
Claims (4)
1. A hot air heater comprising:
a housing having formed therein an inlet port for sucking room air and an outlet port; and
a circulation fan, a burner, and a heat exchanger, all being housed in the housing, the heat exchanger being arranged to cause combustion gas from the burner to flow through an inside of the heat exchanger so that the room air sucked by operating the circulation fan into the inlet port is heated by the heat exchanger for blowing forward as hot air out of the outlet port,
wherein a supporting plate is disposed to support the heat exchanger inside the housing and wherein the supporting plate is provided with a radiating fin.
2. The hot air heater according to claim 1 , wherein the radiating fin is disposed such that a plate surface of the fin obliquely crosses the direction of flow of the air from the circulation fan.
3. The hot air heater according to claim 1 , wherein the radiating fin is made up of a cut-and-raised piece formed in the supporting plate.
4. The hot air heater according to claim 2 , wherein the radiating fin is made up of a cut-and-raised piece formed in the supporting plate.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009-206672 | 2009-09-08 | ||
JP2009206672A JP5385062B2 (en) | 2009-09-08 | 2009-09-08 | Hot air heater |
Publications (1)
Publication Number | Publication Date |
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US20110057047A1 true US20110057047A1 (en) | 2011-03-10 |
Family
ID=43646947
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/876,573 Abandoned US20110057047A1 (en) | 2009-09-08 | 2010-09-07 | Hot air heater |
Country Status (3)
Country | Link |
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US (1) | US20110057047A1 (en) |
JP (1) | JP5385062B2 (en) |
AU (1) | AU2010219347B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104033980A (en) * | 2014-06-25 | 2014-09-10 | 珠海格力电器股份有限公司 | Humidifying device and electric heater with same |
CN105333612A (en) * | 2015-12-07 | 2016-02-17 | 孔德庆 | Outdoor portable exhaust-separation self-generated electric heater |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106403276A (en) * | 2016-09-21 | 2017-02-15 | 珠海格力电器股份有限公司 | Heating device |
KR102173155B1 (en) * | 2019-04-30 | 2020-11-02 | 주식회사 스타리온 | control pannel for heater |
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CN104033980A (en) * | 2014-06-25 | 2014-09-10 | 珠海格力电器股份有限公司 | Humidifying device and electric heater with same |
CN104033980B (en) * | 2014-06-25 | 2017-01-18 | 珠海格力电器股份有限公司 | Humidifying device and electric heater with same |
CN105333612A (en) * | 2015-12-07 | 2016-02-17 | 孔德庆 | Outdoor portable exhaust-separation self-generated electric heater |
Also Published As
Publication number | Publication date |
---|---|
AU2010219347A1 (en) | 2011-03-24 |
JP5385062B2 (en) | 2014-01-08 |
JP2011058666A (en) | 2011-03-24 |
AU2010219347B2 (en) | 2015-01-22 |
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