JP5385062B2 - Hot air heater - Google Patents

Hot air heater Download PDF

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Publication number
JP5385062B2
JP5385062B2 JP2009206672A JP2009206672A JP5385062B2 JP 5385062 B2 JP5385062 B2 JP 5385062B2 JP 2009206672 A JP2009206672 A JP 2009206672A JP 2009206672 A JP2009206672 A JP 2009206672A JP 5385062 B2 JP5385062 B2 JP 5385062B2
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housing
support plate
heat exchanger
heat
hot air
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JP2011058666A (en
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英樹 渡邉
鈴木　　茂
圭一 伊藤
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Rinnai Corp
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Rinnai Corp
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Priority to JP2009206672A priority Critical patent/JP5385062B2/en
Priority to US12/876,573 priority patent/US20110057047A1/en
Priority to AU2010219347A priority patent/AU2010219347B2/en
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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
    • 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
    • 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
    • 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
    • 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
    • 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

Description

本発明は、バーナの燃焼排ガスにより熱交換器を介して室内空気を加熱する温風暖房機に関する。   The present invention relates to a hot-air heater that heats indoor air through a heat exchanger using combustion exhaust gas from a burner.

従来、この種の温風暖房機として、室内空気の吸込み口と吹出し口とを開設したハウジング内に、循環ファンと、バーナと、バーナの燃焼排ガスを内部に流す熱交換器とが収納され、循環ファンの作動で吸込み口から吸込まれた室内空気を熱交換器で加熱して、吹出し口から温風として送風するものが知られている(例えば、特許文献１参照)。   Conventionally, as a warm air heater of this kind, a circulation fan, a burner, and a heat exchanger that flows the combustion exhaust gas of the burner inside are housed in a housing in which an indoor air inlet and outlet are opened, It is known that indoor air sucked from a suction port by the operation of a circulation fan is heated by a heat exchanger and blown as warm air from a blower port (see, for example, Patent Document 1).

このような温風暖房機は、特許文献１には開示されていないものの、熱交換器をハウジング内で支持する支持板を備えている。従来、支持板は単純な板材で構成され、一般的に、ハウジング内面にねじ止めされている。   Such a hot air heater is provided with a support plate that supports the heat exchanger in the housing, although not disclosed in Patent Document 1. Conventionally, the support plate is made of a simple plate and is generally screwed to the inner surface of the housing.

ところで、バーナを燃焼させると熱交換器は相当高温になり、支持板を介して熱交換器からの熱が支持板をねじ止めしたハウジングの部分に伝達され、この部分が熱くなってしまう。   By the way, when the burner is burned, the heat exchanger becomes considerably hot, and the heat from the heat exchanger is transmitted to the portion of the housing where the support plate is screwed via the support plate, and this portion becomes hot.

特開２００３−１２１００４号公報JP 2003-121004 A

本発明は、以上の点に鑑み、支持板を介しての伝熱によるハウジングの温度上昇を抑制し、且つ、熱効率も向上し得るようにした温風暖房機を提供することをその課題としている。   This invention makes it the subject to provide the warm air heater which suppressed the temperature rise of the housing by the heat transfer through a support plate, and was able to improve thermal efficiency in view of the above point. .

上記課題を解決するために、本発明は、室内空気の吸込み口と吹出し口とを開設したハウジング内に、循環ファンと、バーナと、バーナの燃焼排ガスを内部に流す熱交換器とが収納され、循環ファンの作動で吸込み口から吸込まれた室内空気を熱交換器で加熱して、吹出し口から温風として送風する温風暖房機において、熱交換器をハウジング内で支持する支持板を備え、この支持板に放熱フィンが設けられていることを特徴とする。   In order to solve the above-described problems, the present invention includes a circulation fan, a burner, and a heat exchanger for flowing the combustion exhaust gas from the burner in a housing in which an indoor air suction port and a blow-out port are opened. In the warm air heater that heats the indoor air sucked from the suction port by the operation of the circulation fan by the heat exchanger and blows it as warm air from the blowout port, a support plate for supporting the heat exchanger in the housing is provided. The support plate is provided with radiating fins.

本発明によれば、熱交換器から支持板に伝達された熱が放熱フィンから放熱され、ハウジングに支持板を介して伝達される熱量が減少して、ハウジングの温度上昇が抑制される。同時に、支持板の周りに流れる空気が放熱フィンからの放熱で加熱されるため、熱効率も向上する。   According to the present invention, the heat transmitted from the heat exchanger to the support plate is dissipated from the radiation fins, and the amount of heat transmitted to the housing via the support plate is reduced, thereby suppressing an increase in the temperature of the housing. At the same time, since the air flowing around the support plate is heated by the heat radiation from the radiation fins, the thermal efficiency is also improved.

また、本発明において、放熱フィンは、その板面が循環ファンからの空気の流れ方向に対し斜交するように設けられることが望ましい。これによれば、放熱フィンと空気流との間での熱交換が効率的に行われ、ハウジングへの伝達熱量の減少と空気の加熱とを促進できる。   In the present invention, it is desirable that the heat dissipating fins be provided so that their plate surfaces are obliquely crossed with respect to the air flow direction from the circulation fan. According to this, heat exchange between the radiating fin and the air flow is efficiently performed, and it is possible to promote the reduction of the amount of heat transmitted to the housing and the heating of the air.

また、本発明において、放熱フィンは、支持板に形成した切起し片で構成されることが望ましい。これによれば、支持板と別体の放熱フィンを支持板に固定するものと異なり、部品点数を削減してコストダウンを図ることができ、更に、放熱フィンの切起し跡の穴で支持板の伝熱面積が狭められ、ハウジングへの伝達熱量が一層減少する。   In the present invention, it is desirable that the heat dissipating fin is constituted by a cut and raised piece formed on the support plate. This makes it possible to reduce the number of parts by reducing the number of parts, unlike the case of fixing the radiating fin separately from the support plate to the support plate. The heat transfer area of the plate is reduced, and the amount of heat transferred to the housing is further reduced.

本発明の実施形態の温風暖房機の斜視図。The perspective view of the warm air heater of embodiment of this invention. 実施形態の温風暖房機の切断側面図。The cut side view of the warm air heater of embodiment. 図２のＩＩＩ−ＩＩＩ線で切断した切断正面図。The cut front view cut | disconnected by the III-III line | wire of FIG. 図３のＩＶ−ＩＶで切断した要部の拡大切断平面図。The expanded cutting top view of the principal part cut | disconnected by IV-IV of FIG. 要部の斜視図。The perspective view of the principal part.

図１乃至図３を参照して、１は本発明の実施形態の温風暖房機のハウジングを示している。ハウジング１は、背面板部１１と左右の側板部１２と天板部１３と底板部１４とで構成される箱型の本体と、本体の前面を覆う前面パネル１５とで構成されている。そして、背面板部１１の上部に室内空気の吸込み口１ａを開設すると共に、前面パネル１５の下部に吹出し口１ｂを開設している。   Referring to FIGS. 1 to 3, reference numeral 1 denotes a housing of a hot air heater according to an embodiment of the present invention. The housing 1 includes a box-shaped main body including a back plate portion 11, left and right side plate portions 12, a top plate portion 13, and a bottom plate portion 14, and a front panel 15 that covers the front surface of the main body. And while opening the indoor air suction inlet 1a in the upper part of the backplate part 11, the blower outlet 1b is opened in the lower part of the front panel 15. FIG.

また、ハウジング１の天板部１３には、操作パネル１６が設けられている。更に、ハウジング１の背面板部１１の外面には、屋外にのびる図外の給排気ダクトと後述する排気筒５３及び燃焼ファン６との間の配管空間を囲うガード枠１７が取り付けられている。   An operation panel 16 is provided on the top plate 13 of the housing 1. Further, a guard frame 17 is attached to the outer surface of the back plate portion 11 of the housing 1 so as to surround a piping space between an unillustrated supply / exhaust duct extending outside and an exhaust cylinder 53 and a combustion fan 6 described later.

ハウジング１内の上部には循環ファン２が収納されている。循環ファン２は、吸込み口１ａに臨むファンケーシング２１内に配置され、モータ２２で駆動される横長のクロスフローファンで構成されている。   A circulation fan 2 is accommodated in the upper part of the housing 1. The circulation fan 2 is arranged in a fan casing 21 facing the suction port 1 a and is constituted by a horizontally long cross flow fan driven by a motor 22.

また、ハウジング１内には、ファンケーシング２１と吹出し口１ｂとを結ぶ通風路３が画成されている。通風路３は、背面板部１１と、図３で左側の側板部１２の内側に設けた第１横仕切り板３１と、ファンケーシング２１の図３の右端部から下方に伸びる第２横仕切り板３２と、吹出し口１ｂの下端よりも若干下方に設けた下仕切り板３３と、ファンケーシング２１の前縁から下方に伸びる前仕切り板３４とで囲われている。   In the housing 1, a ventilation path 3 that connects the fan casing 21 and the outlet 1 b is defined. The ventilation path 3 includes a back plate 11, a first horizontal partition 31 provided inside the left side plate 12 in FIG. 3, and a second horizontal partition extending downward from the right end of the fan casing 21 in FIG. 32, a lower partition plate 33 provided slightly below the lower end of the outlet 1b, and a front partition plate 34 extending downward from the front edge of the fan casing 21.

ハウジング１内には、更に、ガスバルブユニット４１とこれに連なるパイプ４２とを介して燃料ガスを供給する筒型のバーナ４が第２横仕切り板３２の下部を貫通するように収納されると共に、通風路３内に位置して、バーナ４の燃焼排ガスを内部に流す熱交換器５が収納されている。そして、循環ファン２の作動で吸込み口１ａから吸込まれた室内空気が熱交換器５で加熱され、吹出し口１ｂから温風として室内に送風されるようにしている。   In the housing 1, a cylindrical burner 4 for supplying fuel gas via a gas valve unit 41 and a pipe 42 connected to the gas valve unit 41 is accommodated so as to penetrate the lower part of the second horizontal partition plate 32. A heat exchanger 5 is accommodated which is located in the ventilation path 3 and allows the combustion exhaust gas of the burner 4 to flow inside. And the indoor air suck | inhaled from the suction inlet 1a by the action | operation of the circulation fan 2 is heated with the heat exchanger 5, and it is made to ventilate indoors as warm air from the blower outlet 1b.

また、ハウジング１内には、給排気ダクトの給気ダクト部からの外気をバーナ４に燃焼用空気として供給する燃焼ファン６が収納されている。燃焼ファン６は、ハウジング１の背面板部１１に固定のファンケーシング６１内に配置した、モータ６２で駆動される遠心ファンで構成されている。また、下仕切り板３３の下側に、水を入れた加湿皿７が配置されており、下仕切り板３３に開設した開口３３ａを通して温風に水蒸気が供給されるようにしている。そして、吹出し口１ｂより下方の前面パネル１５の下端部分１５ａを着脱自在とし、加湿皿７を取り出して水を補給できるようにしている。   The housing 1 also houses a combustion fan 6 that supplies outside air from the air supply duct portion of the air supply / exhaust duct to the burner 4 as combustion air. The combustion fan 6 is a centrifugal fan that is disposed in a fan casing 61 that is fixed to the back plate 11 of the housing 1 and that is driven by a motor 62. Further, a humidifying dish 7 filled with water is disposed below the lower partition plate 33 so that water vapor is supplied to the warm air through an opening 33 a opened in the lower partition plate 33. And the lower end part 15a of the front panel 15 below the blower outlet 1b is made detachable, and the humidifying tray 7 is taken out so that water can be replenished.

前記熱交換器５は、バーナ４から図３で左方に伸びる燃焼筒５１と、燃焼筒５１よりも上方に横設した蛇腹状の熱交換筒５２と、燃焼筒５１と熱交換筒５２との間に横設した排気筒５３とを備えている。そして、燃焼筒５１の下流端たる左端と熱交換筒５２の上流端たる左端とをボックス５４を介して連通させると共に、熱交換筒５２の下流端たる右端と排気筒５３の上流端たる右端とをボックス５５を介して連通させ、燃焼排ガスが燃焼筒５１とボックス５４と熱交換筒５２とボックス５５とを介して排気筒５３に流れるようにしている。排気筒５３の下流端は背面板部１１を通してハウジング１の背面に突出し、給排気ダクトの排気ダクト部に接続される。   The heat exchanger 5 includes a combustion cylinder 51 extending leftward from the burner 4 in FIG. 3, a bellows-shaped heat exchange cylinder 52 horizontally disposed above the combustion cylinder 51, a combustion cylinder 51, and a heat exchange cylinder 52. And an exhaust pipe 53 provided horizontally. The left end, which is the downstream end of the combustion cylinder 51, and the left end, which is the upstream end of the heat exchange cylinder 52, communicate with each other via the box 54, and the right end, which is the downstream end of the heat exchange cylinder 52, and the right end, which is the upstream end of the exhaust cylinder 53, Are communicated via a box 55 so that the combustion exhaust gas flows to the exhaust cylinder 53 via the combustion cylinder 51, the box 54, the heat exchange cylinder 52 and the box 55. The downstream end of the exhaust cylinder 53 protrudes to the back surface of the housing 1 through the back plate portion 11 and is connected to the exhaust duct portion of the supply / exhaust duct.

ここで、熱交換器５は、支持板８によってハウジング１内に支持される。この支持板８は、図４、図５に示す如く、第１横仕切り板３１に切起しで形成した固定部３１ａにねじ８１ａで締結される前板部８１と、前板部８１の横方向内方の縁部から後方に折り曲げられ、熱交換器５のボックス５４の外側面にねじ８２ａで締結される側板部８２とを有する。前板部８１の横方向外方の縁部には、第１横仕切り板３１の固定部３１ａの切起し跡の穴を閉塞するフランジ部８３が曲成されている。また、側板部８２の後縁部には、ハウジング１の背面板部１１に当接するフランジ部８４が曲成されている。そして、背面板部１１に設けたフック部１１ａにフランジ部８４をこれに形成した係止孔８４ａにおいて係止させている。   Here, the heat exchanger 5 is supported in the housing 1 by the support plate 8. As shown in FIGS. 4 and 5, the support plate 8 includes a front plate portion 81 fastened with a screw 81 a to a fixing portion 31 a formed by cutting and raising the first horizontal partition plate 31, and a lateral side of the front plate portion 81. The side plate 82 is bent rearward from the inner edge of the direction and fastened to the outer surface of the box 54 of the heat exchanger 5 with screws 82a. A flange portion 83 that closes a hole of a cut and raised mark of the fixing portion 31a of the first horizontal partition plate 31 is bent at the outer edge of the front plate portion 81 in the lateral direction. Further, a flange portion 84 that is in contact with the back plate portion 11 of the housing 1 is bent at the rear edge portion of the side plate portion 82. And the flange part 84 is made to latch in the hook hole 11a formed in this at the hook part 11a provided in the backplate part 11. As shown in FIG.

ところで、このままでは、熱交換器５からの熱が支持板８を介して第１横仕切り板３１や背面板部１１に伝達され、ハウジング１が熱くなってしまう。   By the way, in this state, the heat from the heat exchanger 5 is transmitted to the first horizontal partition plate 31 and the back plate portion 11 via the support plate 8, and the housing 1 becomes hot.

そこで、本実施形態では、支持板８の前板部８１及び側板部８２に夫々複数の放熱フィン８５を設けている。これによれば、熱交換器５から支持板８に伝達された熱が放熱フィン８５から放熱され、ハウジング１に支持板８を介して伝達される熱量が減少して、ハウジング１の温度上昇が抑制される。同時に、支持板８の周りに流れる空気が放熱フィン８５からの放熱で加熱される。即ち、支持板８が熱交換部材として有効に機能し、熱効率も向上する。   Therefore, in the present embodiment, a plurality of radiating fins 85 are provided on the front plate portion 81 and the side plate portion 82 of the support plate 8, respectively. According to this, the heat transmitted from the heat exchanger 5 to the support plate 8 is radiated from the radiation fins 85, the amount of heat transmitted to the housing 1 via the support plate 8 is reduced, and the temperature of the housing 1 is increased. It is suppressed. At the same time, the air flowing around the support plate 8 is heated by the heat radiation from the radiation fins 85. That is, the support plate 8 effectively functions as a heat exchange member, and the thermal efficiency is improved.

ここで、各放熱フィン８５は、その板面が循環ファン２からの空気の流れ方向(上下方向)に対し斜交するように設けられている。そのため、放熱フィン８５と空気流との間での熱交換が効率的に行われ、ハウジング１への伝達熱量の減少と空気の加熱とを促進できる。   Here, each of the heat dissipating fins 85 is provided so that its plate surface is oblique to the air flow direction (vertical direction) from the circulation fan 2. Therefore, heat exchange between the radiating fins 85 and the airflow is efficiently performed, and a reduction in the amount of heat transferred to the housing 1 and heating of the air can be promoted.

尚、放熱フィン８５を支持板８とは別体の板部材で形成し、支持板８に放熱フィン８５を溶接等で固定することも可能である。然し、これでは、部品点数が増してコストが高くなる。   It is also possible to form the radiating fins 85 by a plate member separate from the support plate 8 and fix the radiating fins 85 to the support plate 8 by welding or the like. However, this increases the number of parts and increases the cost.

そこで、本実施形態では、放熱フィン８５を支持板８に形成した切起し片で構成している。これによれば、別体の放熱フィンが不要になって、コストダウンを図ることができる。更に、放熱フィン８５の切起し跡の穴８５ａで支持板８の伝熱面積が狭められる。そのため、ハウジング１への伝達熱量が一層減少し、ハウジング１の温度上昇を一層効果的に抑制できる。   Therefore, in the present embodiment, the heat radiating fins 85 are constituted by cut and raised pieces formed on the support plate 8. According to this, a separate heat dissipating fin is not necessary, and the cost can be reduced. Further, the heat transfer area of the support plate 8 is narrowed by the hole 85a of the cut and raised trace of the radiating fin 85. Therefore, the amount of heat transferred to the housing 1 is further reduced, and the temperature rise of the housing 1 can be more effectively suppressed.

以上、本発明の実施形態について図面を参照して説明したが、本発明はこれに限定されない。例えば、上記実施形態では、屋外からの外気をバーナ４に燃焼用空気として供給しているが、バーナ４に室内空気を燃焼用空気として供給することも可能である。   As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the above embodiment, outdoor air from the outside is supplied to the burner 4 as combustion air, but room air can be supplied to the burner 4 as combustion air.

１…ハウジング、１ａ…吸込み口、１ｂ…吹出し口、２…循環ファン、４…バーナ、５…熱交換器、８…支持板、８５…放熱フィン。   DESCRIPTION OF SYMBOLS 1 ... Housing, 1a ... Suction inlet, 1b ... Outlet, 2 ... Circulation fan, 4 ... Burner, 5 ... Heat exchanger, 8 ... Support plate, 85 ... Radiation fin.

Claims (3)

室内空気の吸込み口と吹出し口とを開設したハウジング内に、循環ファンと、バーナと、バーナの燃焼排ガスを内部に流す熱交換器とが収納され、循環ファンの作動で吸込み口から吸込まれた室内空気を熱交換器で加熱して、吹出し口から温風として送風する温風暖房機において、
熱交換器をハウジング内で支持する支持板を備え、この支持板に放熱フィンが設けられていることを特徴とする温風暖房機。 Inside the housing that opened the indoor air inlet and outlet, the circulation fan, the burner, and the heat exchanger that flows the combustion exhaust gas from the burner were housed, and were sucked from the inlet by the operation of the circulation fan. In a hot air heater that heats indoor air with a heat exchanger and blows air as hot air from the outlet,
A hot air heater comprising a support plate for supporting a heat exchanger in a housing, and a heat radiating fin provided on the support plate. 前記放熱フィンは、その板面が前記循環ファンからの空気の流れ方向に対し斜交するように設けられることを特徴とする請求項１記載の温風暖房機。   The hot air heater according to claim 1, wherein the radiating fin is provided so that a plate surface thereof is obliquely crossed with respect to a flow direction of air from the circulation fan. 前記放熱フィンは、前記支持板に形成した切起し片で構成されることを特徴とする請求項１又は２記載の温風暖房機。   The hot air heater according to claim 1 or 2, wherein the heat radiating fin is constituted by a cut and raised piece formed on the support plate.
JP2009206672A 2009-09-08 2009-09-08 Hot air heater Active JP5385062B2 (en)

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