JP2008232477A - Hot-air heater - Google Patents

Hot-air heater Download PDF

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JP2008232477A
JP2008232477A JP2007069948A JP2007069948A JP2008232477A JP 2008232477 A JP2008232477 A JP 2008232477A JP 2007069948 A JP2007069948 A JP 2007069948A JP 2007069948 A JP2007069948 A JP 2007069948A JP 2008232477 A JP2008232477 A JP 2008232477A
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furnace
rear end
hot air
face plate
air outlet
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JP5071965B2 (en
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Masanori Nishida
正徳 西田
Hidefumi Shikakura
秀文 鹿倉
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SANSYU SANGYO CO Ltd
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SANSYU SANGYO CO Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable hot-air heater of high durability by improving the cooling efficiency of a furnace, that is, heat exchanging efficiency by devising a cooling structure of a furnace. <P>SOLUTION: This hot-air heater comprises a horizontal casing 2 having an air suction opening 8 at a front end face plate 2a and a hot air outlet 9 a rear end face plate 2b, the cylindrical furnace 3 comprising a burner 6 at its front end and received in the casing 2, a double cylinder-shaped heat exchanging portion 4 disposed around the furnace 3 at an interval, and an air blower 5 mounted to the rear end face plate 2a of the casing 2 while facing the hot air outlet 8. The furnace 3 and the heat exchanging portion 4 are made to communicate with each other at communicating portions 14 disposed at their rear ends, an air discharge opening 15 is formed at the front end of the heat exchanging portion 4, an air passage 13 is formed around the furnace 3 and the heat exchanging portion 4, the rear end face plate 3a of the furnace 3 facing the hot air outlet 9 of the rear end face plate 2a of the casing is projected into a circular conical shape toward the hot air outlet 9, and a guide 18 is formed to guide the air flow channel from the air passage 13 toward the hot air outlet 9. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、温風機、特に空気を熱交換部の表面に沿って強制的に送風し、燃焼ガスと熱交換して加熱する型式の温風機で、例えば在来種葉たばこのハウス内乾燥や園芸用ハウス内暖房に使用される温風機に関するものである。   The present invention is a warm air machine, in particular, a type of warm air machine that forcibly blows air along the surface of a heat exchange section and heats it by exchanging heat with combustion gas. It is related with the warm air machine used for the heating in a house.

本出願人は、先にこの種の温風機として、図４に示す構造のもの、すなわち、前端部にバーナー３０を備える円筒形の火炉３１をケーシング３２内に横向きに収め、火炉３１の周囲に隙間をおいて火炉３１を囲むように二重筒形の熱交換部３３を形成し、火炉３１および熱交換部３３を後端部において互いに連通しかつ熱交換部３３の前端部に燃焼ガスの排気口３４を設けた構造の温風機を提案した（特許文献１参照）。この温風機は、ケーシング３２の温風出口３５に取付けた送風機３６のファンを回転させ、空気吸込口３７から吸込んだ空気を熱交換部３３の表面に沿って強制送風し、火炉３１内の燃焼ガスと熱交換して加熱し、温風を温風出口３５を通して送風機３６の吹出口からハウス内に供給するようになっている。   The present applicant previously placed a cylindrical furnace 31 having a structure shown in FIG. 4 as a hot air machine of this type, that is, a cylindrical furnace 31 having a burner 30 at the front end sideways in a casing 32, around the furnace 31. A double cylindrical heat exchanging portion 33 is formed so as to surround the furnace 31 with a gap, the furnace 31 and the heat exchanging portion 33 are communicated with each other at the rear end portion, and combustion gas is transferred to the front end portion of the heat exchanging portion 33. A hot air blower having a structure provided with an exhaust port 34 has been proposed (see Patent Document 1). This hot air fan rotates the fan of the blower 36 attached to the hot air outlet 35 of the casing 32, forcibly blows the air sucked from the air suction port 37 along the surface of the heat exchange unit 33, and combustion in the furnace 31 Heat is exchanged with gas and heated, and hot air is supplied from the blower outlet of the blower 36 through the hot air outlet 35 into the house.

在来種・バーレー種葉たばこは、ビニルハウスなどを利用してゆっくりと長期間（約３０日間）かけて乾燥される。この場合に主に雨天や曇天時のハウス内湿度を低下させる目的で上記温風機が使用されている。特に東北地方では、夏場に「やませ」と言われる低気圧下の山からの吹き下ろし風により異常低温の時期が発生し、この時期にビニルハウス内が異常な高湿度状態になる。ハウス内の異常な高湿度状態は、葉たばこに種々の病気（空洞病など）を発生させ、品質低下をもたらすため、ハウス内の高湿度状態を長期間にわたり防止するべく、小型簡便でありながら、連続運転に十分耐える温風機の要望が強かった。   Native and Burley leaf tobacco is slowly dried over a long period (about 30 days) using a vinyl house. In this case, the hot air fan is used mainly for the purpose of lowering the humidity in the house during rainy or cloudy weather. In particular, in the Tohoku region, an extremely low temperature period occurs due to a wind blown down from a low-pressure mountain called “Yamenase” in summer, and the inside of the vinyl house becomes abnormally high humidity during this period. The abnormally high humidity state in the house causes various diseases (such as cavernous disease) in leaf tobacco, resulting in quality degradation, so that the high humidity state in the house can be prevented over a long period of time, There was a strong demand for a hot air blower that can withstand continuous operation.

実開平６−４６２５３号公報Japanese Utility Model Publication No. 6-46253

しかし、上記温風機は、図４に示されるように、火炉３１の後部端面板３１ａが火炉３１の軸線に対し垂直なフラット面であることにより、送風機３６の運転中、火炉３１の後部端面板３１ａの後方に負圧空間Ｓが形成され、火炉３１の後部端面板３１ａにおける冷却が十分でないという面があった。   However, as shown in FIG. 4, the hot air blower has a rear end face plate 31 a of the furnace 31 that is a flat surface perpendicular to the axis of the furnace 31. The negative pressure space S was formed behind 31a, and there was a surface that the rear end face plate 31a of the furnace 31 was not sufficiently cooled.

本発明は上記課題に鑑みてなされたもので、その目的とするところは、火炉の冷却構造を工夫して、火炉の冷却効率、すなわち、熱交換効率を良くし、耐久性を向上させることのできる、可搬式の温風機を提供することにある。また、熱交換後の温風出口に向かう空気の流れを良くすることのできる温風機を提供することにある。   The present invention has been made in view of the above problems, and the object of the present invention is to devise a cooling structure of the furnace to improve the cooling efficiency of the furnace, that is, the heat exchange efficiency and improve the durability. It is to provide a portable warm air machine that can. Another object of the present invention is to provide a warm air machine capable of improving the flow of air toward the warm air outlet after heat exchange.

上記課題を解決するために、本発明に係る請求項１記載の温風機は、前部端面板に空気吸込口および後部端面板に温風出口がそれぞれ開設された横形のケーシングと、前端部にバーナーが備わると共に、ケーシング内に収容された円筒形状の火炉と、火炉の周囲に隙間をおいて配置された二重筒形状の熱交換部と、温風出口に臨んでケーシング後部端面板に取付けられた送風機とを備え、火炉および熱交換部はその後端部に設けられた連通部で互いに連通されていると共に、熱交換部の前端部に排気口が開設され、火炉の周囲および熱交換部の周囲には空気通路が形成され、ケーシング後部端面板の温風出口に臨む火炉の後部端面板が温風出口に向けて円錐形状または半球形状に突出形成され、これにより空気通路から温風出口へ向かう空気流路をガイドするガイド部が形成されることを特徴とする。   In order to solve the above-mentioned problem, a warm air machine according to claim 1 according to the present invention includes a horizontal casing in which an air suction port is provided in a front end face plate and a hot air outlet is provided in a rear end face plate, respectively, and a front end portion. With a burner, a cylindrical furnace housed in the casing, a double cylindrical heat exchanger arranged with a gap around the furnace, and attached to the casing rear end face plate facing the hot air outlet The furnace and the heat exchanging part are communicated with each other by a communication part provided at the rear end part thereof, and an exhaust port is opened at the front end part of the heat exchanging part to surround the furnace and the heat exchanging part. An air passage is formed around the rear end face plate of the furnace facing the hot air outlet of the rear end face plate of the casing so as to protrude in a conical or hemispherical shape toward the hot air outlet. Air to Wherein the guide portion for guiding the road is formed.

請求項１記載の温風機によると、送風機の運転により、ケーシング内に吸入された空気は火炉の表面及び熱交換部の内外両表面を軸方向に沿って空気通路内を流れ、火炉の表面及び熱交換部の表面との間で熱交換され、温風となって、温風出口から送風機を通してハウス内に吹き出される。ここで、火炉の後部端面板が温風出口に向けて円錐形状または半球形状に突出形成されることにより、空気通路から温風出口へ向かう空気流路をガイドするガイド部が形成されて、温風出口へ向かう空気流路が整流化される。同時に、従来の火炉の後部端面板の後方に形成されていた負圧空間が解消され、火炉の後部端面板からの冷却が十分に行われ、熱交換効率が向上する。   According to the warm air machine of claim 1, due to the operation of the blower, the air sucked into the casing flows in the air passage along the surface of the furnace and both the inner and outer surfaces of the heat exchange section along the axial direction, Heat is exchanged with the surface of the heat exchanging section to form hot air, which is blown out from the hot air outlet through the blower into the house. Here, the rear end face plate of the furnace is formed so as to protrude in a conical shape or a hemispherical shape toward the hot air outlet, thereby forming a guide portion for guiding the air flow path from the air passage to the hot air outlet. The air flow path toward the wind outlet is rectified. At the same time, the negative pressure space formed behind the conventional rear end face plate of the furnace is eliminated, the cooling from the rear end face plate of the furnace is sufficiently performed, and the heat exchange efficiency is improved.

火炉の後部端面板からの冷却が十分行われるので、火炉の炉体耐久性が向上し、もって温風機の耐久性、安全性がより向上する。   Since the cooling from the rear end face plate of the furnace is sufficiently performed, the furnace body durability of the furnace is improved, and the durability and safety of the warm air fan are further improved.

本発明に係る請求項２記載の温風機は、ケーシングの後部端面板の内面に、前記円錐形状または半球形状のガイド部とともに、空気通路から温風出口へ向かう空気流路をガイドする円筒形状の補助ガイド板が取付けられていることを特徴とする。   According to a second aspect of the present invention, there is provided a warm air machine having a cylindrical shape that guides an air flow path from the air passage toward the hot air outlet along with the conical or hemispherical guide portion on the inner surface of the rear end face plate of the casing. An auxiliary guide plate is attached.

請求項２記載の温風機によると、温風出口の周囲に配置される円筒形状の補助ガイド板により、温風出口へ向かう空気流路がより一層整流化される。これにより、火炉と熱交換部における熱交換が促進され、熱交換効率がより向上する。   According to the warm air machine of claim 2, the air flow path toward the warm air outlet is further rectified by the cylindrical auxiliary guide plate disposed around the warm air outlet. Thereby, the heat exchange in a furnace and a heat exchange part is accelerated | stimulated, and heat exchange efficiency improves more.

以上説明したように、本発明に係る温風機によると、火炉の後部端面板を温風出口に向けて円錐形状または半球形状に突出形成して、空気通路から温風出口へ向かう空気流路をガイドするガイド部を形成したので、温風出口へ向かう空気流路を整流化すると同時に、従来の火炉の後部端面板の後方に形成されていた負圧空間を解消して、火炉の後部端面板からの冷却を十分に行なわせ、もって熱交換効率を向上させることができる効果を奏する。   As described above, according to the hot air machine according to the present invention, the rear end face plate of the furnace is formed to protrude in a conical shape or a hemispherical shape toward the hot air outlet, and the air flow path from the air passage to the hot air outlet is formed. Since the guide part to guide is formed, the air flow path toward the hot air outlet is rectified, and at the same time, the negative pressure space formed behind the rear end face plate of the conventional furnace is eliminated, and the rear end face plate of the furnace Thus, there is an effect that the cooling can be sufficiently performed and the heat exchange efficiency can be improved.

本発明を実施するための最良の形態を図１ないし図３を参照して説明する。図１は本発明の温風機の一部を断面視した側面図、図２は図１のＡ−Ａ線矢視一部断面図である。これらの図において、１は温風機、２はケーシング、３は火炉（燃焼室）、４は熱交換部、５は送風機、６はバーナー、７は煙突である。   The best mode for carrying out the present invention will be described with reference to FIGS. FIG. 1 is a side view of a part of the warm air machine of the present invention in a sectional view, and FIG. 2 is a partial sectional view taken along line AA in FIG. In these drawings, 1 is a warm air machine, 2 is a casing, 3 is a furnace (combustion chamber), 4 is a heat exchange section, 5 is a blower, 6 is a burner, and 7 is a chimney.

ケーシング２は、横形の筒形状に形成されているもので、その前部端面板２ａに多数の空気吸込口８が開設され、反対側の後部端面板２ｂに温風出口９が開設されている。ケーシング２内には火炉３および熱交換部４が収容されている。火炉３は、横向きの円筒形状に形成されており、その後部端面板３ａは閉鎖されている。火炉３の前部形状は、前方へ向けて縮径するコーン形状に形成されており、コーン形状から続く接続筒部１０がケーシング２の前部端面板２ａの内面に接続されている。接続筒部１０内には、ガンタイプのバーナー６のヘッド１１がそのノズルを火炉３内に臨ませて配置されている。バーナー６は、取付板１２を介してケーシング２の前部端面板２ａに取付固定されている。   The casing 2 is formed in a horizontal cylindrical shape, and a large number of air suction ports 8 are opened in the front end face plate 2a, and a hot air outlet 9 is opened in the opposite rear end face plate 2b. . A furnace 3 and a heat exchange unit 4 are accommodated in the casing 2. The furnace 3 is formed in a horizontal cylindrical shape, and its rear end face plate 3a is closed. The front part shape of the furnace 3 is formed in a cone shape whose diameter is reduced toward the front, and the connecting cylinder part 10 continuing from the cone shape is connected to the inner surface of the front end face plate 2 a of the casing 2. A head 11 of a gun-type burner 6 is arranged in the connecting cylinder portion 10 with its nozzle facing the furnace 3. The burner 6 is fixedly attached to the front end face plate 2 a of the casing 2 via the mounting plate 12.

熱交換部４は、火炉３の周囲に隙間Ｓ１を形成して火炉３を囲むように配置されるもので、中空の二重円筒状に形成されている。熱交換部４の外周面とケーシング２の内周面との間にも隙間Ｓ２が形成されて、それら隙間Ｓ１，Ｓ２により空気通路１３が形成されている。両隙間S１，Ｓ２から形成される空気通路１３は、空気吸込口８から吸込まれた空気を温風出口９に向けて流通させるようになっている。火炉３および熱交換部４は、その後端部に複数箇所（図示例では３箇所）設けられた連通部１４を介して互いに連通されている。熱交換部４の前端部は火炉３の前端部付近まで達しており、熱交換部５の前部端面は閉鎖されている。熱交換部５の前端部には上向きの排気口１５が開設されており、排気口１５にはケーシング２の外面から上向きに突出する煙突７が取付けられている。   The heat exchanging unit 4 is disposed so as to surround the furnace 3 by forming a gap S1 around the furnace 3, and is formed in a hollow double cylindrical shape. A gap S2 is also formed between the outer peripheral surface of the heat exchange unit 4 and the inner peripheral surface of the casing 2, and the air passage 13 is formed by the gaps S1 and S2. The air passage 13 formed by both the gaps S <b> 1 and S <b> 2 allows the air sucked from the air suction port 8 to flow toward the hot air outlet 9. The furnace 3 and the heat exchange part 4 are mutually connected via the communication part 14 provided in multiple places (3 illustrations) in the rear-end part. The front end portion of the heat exchange unit 4 reaches the vicinity of the front end portion of the furnace 3, and the front end surface of the heat exchange unit 5 is closed. An upward exhaust port 15 is opened at the front end of the heat exchange unit 5, and a chimney 7 protruding upward from the outer surface of the casing 2 is attached to the exhaust port 15.

ケーシング２の後部端面板２ｂの外面には、温風出口９に臨んで、送風機５が取付固定されている。送風機５の内部には空気吸込口８から空気を吸込み、温風出口９から温風を吐出するためのファン１６が設けられている。   A blower 5 is attached and fixed to the outer surface of the rear end face plate 2b of the casing 2 so as to face the hot air outlet 9. Inside the blower 5 is provided a fan 16 for sucking air from the air suction port 8 and discharging warm air from the warm air outlet 9.

温風出口９に臨む火炉２の後部端面板２ａは、温風出口９に向けて円錐形状に突出形成されている。すなわち、火炉２の後部端面板２ａの周縁部から円錐形状に突出して中央の頂部１７が温風出口９の近傍に達している。図示例の場合、中央の頂部１７から後部端面板２ａの周縁部までの傾斜面と中心軸線Ｐとの間の角度αは、約４５度に設定されている。後部端面板２ａは、温風出口９に向けて円錐形状に突出形成されることにより、空気通路１３から温風出口８へ向かう空気流路（空気の流れ）を整流化するべくガイドする円錐形状のガイド部１８が形成されている。なお、ガイド部１８は、半球形状であってもよい。   The rear end face plate 2 a of the furnace 2 facing the hot air outlet 9 is formed to protrude in a conical shape toward the hot air outlet 9. That is, the top 17 of the center reaches the vicinity of the hot air outlet 9 projecting in a conical shape from the peripheral edge of the rear end face plate 2 a of the furnace 2. In the case of the illustrated example, the angle α between the inclined surface from the central top 17 to the peripheral edge of the rear end face plate 2a and the central axis P is set to about 45 degrees. The rear end face plate 2 a is formed in a conical shape so as to project toward the hot air outlet 9, thereby guiding the air flow path (air flow) from the air passage 13 toward the hot air outlet 8 to rectify. The guide portion 18 is formed. The guide portion 18 may be hemispherical.

ケーシング２の後部端面板２ｂの内面には、前記の円錐形状のガイド部１８とともに、空気通路１３から温風出口９へ向かう空気流路を整流化するべくガイドする円筒形状の補助ガイド板１９が温風出口９の周囲に取付けられている。円筒形状の補助ガイド板１９の内径は、熱交換部４の外径と略同一かそれよりも若干大きい寸法に設定されている。これにより、火炉３の外周面と熱交換部４の内周面との隙間Ｓ１を軸方向に流れる空気がストレートに温風出口９に導かれ、熱交換部４の内外表面に沿って軸方向に流れる空気が、補助ガイド板１９内にガイドされて、整流化され、温風出口９に導かれる。   A cylindrical auxiliary guide plate 19 for guiding the air flow path from the air passage 13 to the hot air outlet 9 is rectified on the inner surface of the rear end face plate 2b of the casing 2 together with the conical guide portion 18 described above. It is attached around the hot air outlet 9. The inner diameter of the cylindrical auxiliary guide plate 19 is set to be approximately the same as or slightly larger than the outer diameter of the heat exchange section 4. As a result, the air flowing in the axial direction through the gap S1 between the outer peripheral surface of the furnace 3 and the inner peripheral surface of the heat exchanging section 4 is guided straight to the hot air outlet 9 and axially along the inner and outer surfaces of the heat exchanging section 4 The air flowing in the air is guided into the auxiliary guide plate 19, rectified, and guided to the hot air outlet 9.

上記の火炉２および熱交換部３は、ケーシング２の下面板２ｃ上に支持体２０を介して隙間Ｓ３をおいて設置支持されている。また、ケーシング２の前部端面板２ａに対し火炉２の前端部が取付部２１を介して取付支持されている。   The furnace 2 and the heat exchange unit 3 are installed and supported on the lower surface plate 2 c of the casing 2 with a gap S <b> 3 through a support 20. Further, the front end portion of the furnace 2 is attached and supported via the attachment portion 21 to the front end face plate 2 a of the casing 2.

ケーシング２は、バーナー６の燃料である灯油を収容するボックス状に形成された燃料タンク２２上に若干の隙間をおいて設置支持されている。燃料タンク２２からは燃料供給管２３がバーナー６に延びて接続されている。燃料タンク２２の後部には一対の車輪２４が設けられ、前部にはスタンド兼用の手押しハンドル２５が取り付けられている。   The casing 2 is installed and supported with a slight gap on a fuel tank 22 formed in a box shape for containing kerosene as fuel of the burner 6. A fuel supply pipe 23 extends from the fuel tank 22 to the burner 6 and is connected thereto. A pair of wheels 24 are provided at the rear part of the fuel tank 22, and a hand push handle 25 serving as a stand is attached to the front part.

以上のように構成された温風機は、バーナー６を着火し送風機５のファン１６を作動させると、外気が空気吸入口８からケーシング２内に吸入され、空気通路１３を、火炉３の表面及び熱交換部４の内外両表面を軸方向に沿って流れ、送風機５から後方へ送風吐出される。一方、バーナー６の燃焼ガスは火炉３内を後方に流れ、火炉３後端部の連通部１４から熱交換部４に流入して、熱交換部４内を前方に戻り、熱交換部４の前端に達した後、排気口１５から煙突７を介して排気される。温風の温度はバーナー６の熱量を制御する温度調節器２６により設定温度に自動的に調整される。なお、２７は燃料供給バルブ、２８は加熱防止器である。   In the hot air blower configured as described above, when the burner 6 is ignited and the fan 16 of the blower 5 is operated, the outside air is sucked into the casing 2 from the air suction port 8, and the air passage 13 passes through the surface of the furnace 3 and It flows along the inner and outer surfaces of the heat exchanging part 4 along the axial direction, and is blown and discharged backward from the blower 5. On the other hand, the combustion gas of the burner 6 flows backward in the furnace 3, flows into the heat exchanging part 4 from the communication part 14 at the rear end of the furnace 3, returns to the front in the heat exchanging part 4, and After reaching the front end, air is exhausted through the chimney 7 from the exhaust port 15. The temperature of the hot air is automatically adjusted to the set temperature by a temperature controller 26 that controls the amount of heat of the burner 6. In addition, 27 is a fuel supply valve, 28 is a heating preventer.

これにより、空気吸入口８からケーシング２内に吸入された空気は温風出口９を経て送風機５から送風吐出される過程で、火炉３及び熱交換部４表面における燃焼ガスとの熱交換により加熱され、温風となって、温風出口９から送風機５を経て吐出される。   Thereby, the air sucked into the casing 2 from the air suction port 8 is heated by heat exchange with the combustion gas on the surfaces of the furnace 3 and the heat exchange part 4 in the process of being blown and discharged from the blower 5 through the hot air outlet 9. The hot air is then discharged from the hot air outlet 9 through the blower 5.

本実施形態によると、
（１）火炉３の後部端面板３ａが温風出口９へ向けて円錐状に突出してガイド部１８を形成することにより、火炉３および熱交換部５の周囲の空気通路１３から温風出口９に向かう空気流路が整流化された。これにより、従来構造の課題であった火炉の後部端面板近傍の負圧状態空間が解消され、火炉３の後部端面板３ａからの冷却が改善された。
（２）火炉３の後部端面板３ａの表面積が拡大することから、冷却効率が向上し、全体としての熱交換効率の向上が図れた。
（３）火炉３の後部端面板３ａの冷却が十分に行われることから、熱損傷のおそれがなく、耐久性の向上が図れた。
（４）円錐形状のガイド部１８の周囲を囲むようにして、温風出口９の周囲に円筒形状の補助ガイド板１９を取付けたので、空気通路１３から温風出口９に向かう空気流路がより一層整流化され、空気流路のバランス化が図れた。 According to this embodiment,
(1) The rear end face plate 3a of the furnace 3 protrudes in a conical shape toward the hot air outlet 9 to form a guide portion 18, whereby the hot air outlet 9 from the air passage 13 around the furnace 3 and the heat exchange unit 5 is formed. The air flow path toward is rectified. Thereby, the negative pressure state space near the rear end face plate of the furnace, which was a problem of the conventional structure, was eliminated, and the cooling from the rear end face plate 3a of the furnace 3 was improved.
(2) Since the surface area of the rear end face plate 3a of the furnace 3 is increased, the cooling efficiency is improved and the heat exchange efficiency as a whole can be improved.
(3) Since the rear end face plate 3a of the furnace 3 is sufficiently cooled, there is no fear of thermal damage, and durability can be improved.
(4) Since the cylindrical auxiliary guide plate 19 is attached around the hot air outlet 9 so as to surround the conical guide portion 18, the air flow path from the air passage 13 toward the hot air outlet 9 is further increased. The air flow was balanced and the air flow path was balanced.

本発明者は、図４に示す従来構造の温風機（従来型）と、本発明の温風機（実施例１、実施例２）について、比較試験を行った。実施例１は、火炉３の後部端面板３ａを円錐形状に突出形成してガイド部１８を設けたものである。実施例２は、前記したガイド部１８に補助ガイド板１９を追加したものである。試験は、同一の使用状態において行い、火炉の後部端面板の表面温度を測定した。また、煙突内の燃焼排気ガス温度を測定し、その平均値を求め、熱交換効率を計算した。熱交換効率は、農業機械研究所の温風暖房機試験規定（昭和５８年６月）（ＩＡＭテストコードＮｏ．４−１９８３）の４−２暖房能力試験中の計算式に準じて求めた。表１に火炉の後部端面板の表面温度の測定値、表２に燃焼排気ガス温度の平均値と熱交換効率をそれぞれ示す。   The inventor conducted a comparative test on the warm air fan having the conventional structure shown in FIG. 4 (conventional type) and the warm air fan of the present invention (Examples 1 and 2). In the first embodiment, the rear end face plate 3a of the furnace 3 is formed so as to protrude in a conical shape, and a guide portion 18 is provided. In the second embodiment, an auxiliary guide plate 19 is added to the guide portion 18 described above. The test was performed in the same use state, and the surface temperature of the rear end faceplate of the furnace was measured. Moreover, the combustion exhaust gas temperature in a chimney was measured, the average value was calculated | required, and the heat exchange efficiency was calculated. The heat exchange efficiency was determined according to the calculation formula in the 4-2 heating capacity test of the warm air heater test regulations (June 1983) (IAM test code No. 4-1983) of the Agricultural Machinery Research Institute. Table 1 shows the measured values of the surface temperature of the rear end faceplate of the furnace, and Table 2 shows the average value of the combustion exhaust gas temperature and the heat exchange efficiency.

Figure 2008232477
表１の試験結果によると、火炉の表面温度は、従来構造で３８０℃であったのに対し、実施例１が３４０℃、実施例２が２９０℃であった。従来構造に比べて、実施例１で４０℃、実施例２で９０℃の表面温度低下が認められた。これにより、本発明は火炉の冷却効率の改善が図れること、実施例２の構造はより効果が高いことが確認できた。
Figure 2008232477
 According to the test results in Table 1, the surface temperature of the furnace was 380 ° C. in the conventional structure, whereas Example 1 was 340 ° C. and Example 2 was 290 ° C. Compared to the conventional structure, a surface temperature decrease of 40 ° C. in Example 1 and 90 ° C. in Example 2 was observed. Thereby, it was confirmed that the present invention can improve the cooling efficiency of the furnace and that the structure of Example 2 is more effective.

Figure 2008232477
表２の試験結果によると、燃焼排気ガス温度は、従来構造で３８０℃であったのに対し、実施例１が３６０℃であり、従来構造に比べて、２０℃の低下が認められた。熱交換効率は、従来構造が７９．８％であったのに対し、実施例１は８１．０％であり、１．２％の有意差が認められた。
Figure 2008232477
 According to the test results in Table 2, the combustion exhaust gas temperature was 380 ° C. in the conventional structure, whereas Example 1 was 360 ° C., and a decrease of 20 ° C. was observed compared to the conventional structure. The heat exchange efficiency of the conventional structure was 79.8%, while that of Example 1 was 81.0%, showing a significant difference of 1.2%.

本発明の温風機は、在来種葉たばこのハウス内乾燥用以外に、施設園芸ハウス暖房用、工場暖房用、乾燥用として種々の用途に使用可能である。   The warm air machine of the present invention can be used for various uses other than the drying of indigenous leaf tobacco in a house, for the purpose of heating a facility horticultural house, for heating a factory, and for drying.

本発明に係る温風機を示す縦断面図である。It is a longitudinal section showing a warm air machine concerning the present invention. 図１の温風機のＡ−Ａ線矢視の一部断面図である。It is a partial cross section figure of the hot air machine of FIG. 図１の温風機に適用される火炉と熱交換部の正面図である。It is a front view of the furnace applied to the warm air machine of FIG. 1, and a heat exchange part. 従来構造の温風機を示す縦断面図である。It is a longitudinal cross-sectional view which shows the warm air machine of conventional structure.

符号の説明Explanation of symbols

１ 温風機
２，３２ ケーシング
２ａ 前部端面板
２ｂ 後部端面板
３，３１ 火炉
３ａ 後部端面板
４，３３ 熱交換部
５，３６ 送風機
６，３０ バーナー
７ 煙突
８，３７ 空気吸込口
９，３５ 温風出口
１０ 接続部
１１ バーナーのヘッド
１２，２１ 取付板
１３ 空気通路
１４ 連通部
１５，３４ 排気口
１６ ファン
１７ 頂部
１８ ガイド部
１９ 補助ガイド部
２２ 燃料タンク
２３ 燃料供給管
２４ 車輪
２５ 押しハンドル
２６ 温度調節器
２７ 燃料供給バルブ
２８ 加熱防止器
Ｓ１，Ｓ２ 隙間 DESCRIPTION OF SYMBOLS 1 Hot air machine 2,32 Casing 2a Front end face plate 2b Rear end face plate 3,31 Furnace 3a Rear end face plate 4,33 Heat exchange part 5,36 Blower 6,30 Burner 7 Chimney 8,37 Air inlet 9,35 Temperature Air outlet 10 Connecting portion 11 Burner head 12, 21 Mounting plate 13 Air passage 14 Communication portion 15, 34 Exhaust port 16 Fan 17 Top portion 18 Guide portion 19 Auxiliary guide portion 22 Fuel tank 23 Fuel supply pipe 24 Wheel 25 Push handle 26 Temperature Adjuster 27 Fuel supply valve 28 Heating preventer S1, S2 Clearance

Claims (2)

前部端面板に空気吸込口および後部端面板に温風出口がそれぞれ開設された横形のケーシングと、
前端部にバーナーが備わると共に、ケーシング内に収容された円筒形状の火炉と、
火炉の周囲に隙間をおいて配置された二重筒形状の熱交換部と、
温風出口に臨んでケーシング後部端面板に取付けられた送風機とを備え、
火炉および熱交換部はその後端部に設けられた連通部で互いに連通されていると共に、熱交換部の前端部に排気口が開設され、
火炉の周囲および熱交換部の周囲には空気通路が形成され、
ケーシング後部端面板の温風出口に臨む火炉の後部端面板が温風出口に向けて円錐形状または半球形状に突出形成され、これにより空気通路から温風出口へ向かう空気流路をガイドするガイド部が形成されることを特徴とする温風機。 A horizontal casing in which an air inlet is formed in the front end plate and a hot air outlet is opened in the rear end plate,
With a burner at the front end, a cylindrical furnace housed in the casing,
A double cylinder-shaped heat exchanging part arranged with a gap around the furnace,
A blower attached to the casing rear end face plate facing the hot air outlet,
The furnace and the heat exchange part are communicated with each other through a communication part provided at the rear end part, and an exhaust port is opened at the front end part of the heat exchange part,
Air passages are formed around the furnace and around the heat exchanger,
The rear end face plate of the furnace facing the hot air outlet of the casing rear end face plate is formed in a conical or hemispherical shape so as to project toward the hot air outlet, thereby guiding the air flow path from the air passage to the hot air outlet A warm air machine characterized in that is formed. ケーシングの後部端面板の内面に、前記円錐形状または半球形状のガイド部とともに、空気通路から温風出口へ向かう空気流路をガイドする円筒形状の補助ガイド板が取付けられていることを特徴とする請求項１記載の温風機。
A cylindrical auxiliary guide plate that guides the air flow path from the air passage to the hot air outlet is attached to the inner surface of the rear end face plate of the casing together with the conical or hemispherical guide portion. The warm air machine according to claim 1.
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WO2019169397A1 (en) * 2018-03-02 2019-09-06 Fulton Group N.A., Inc. Multisection tubeless heat exchanger, fluid heating system including the same, and methods of manufacture thereof
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CN102155787A (en) * 2010-02-11 2011-08-17 季连祥 Vertical radial plate type hot blast stove
CN102128543A (en) * 2011-03-10 2011-07-20 郑州市鼎力干燥设备有限公司 Special hot air stove for coal slurry
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CN102538193A (en) * 2012-02-10 2012-07-04 冯瑞明 Energy saving hot air furnace
US10228190B2 (en) 2014-12-11 2019-03-12 Fulton Group N.A., Inc. Ribbed tubeless heat exchanger for fluid heating systems including a rib component and methods of manufacture thereof
US20160169552A1 (en) * 2014-12-11 2016-06-16 Fulton Group N.A., Inc. Fully-wetted, refractory-free tubeless fluid heating system with negligible thermal expansion stress
CN105698366A (en) * 2014-12-11 2016-06-22 杭州富尔顿热能设备有限公司 Fully-wetted, refractory-free tubeless fluid heating system with negligible thermal expansion stress
GB2548532A (en) * 2014-12-11 2017-09-20 Fulton Group N A Inc Fully-wetted, refractory-free tubless fluid heating system with negligible thermal expansion stress
WO2016094071A1 (en) * 2014-12-11 2016-06-16 Fulton Group N.A., Inc. Fully-wetted, refractory-free tubeless fluid heating system with negligible thermal expansion stress
US10240813B2 (en) 2014-12-11 2019-03-26 Fulton Group N.A., Inc. Fully-wetted, refractory-free tubeless fluid heating system with negligible thermal expansion stress
US20190219302A1 (en) * 2014-12-11 2019-07-18 Fulton Group N.A., Inc. Fully-wetted, refractory-free tubeless fluid heating system with negligible thermal expansion stress
GB2548532B (en) * 2014-12-11 2020-09-02 Fulton Group Na Inc Fully-wetted, refractory-free tubless fluid heating system with negligible thermal expansion stress
US10948218B2 (en) * 2014-12-11 2021-03-16 Fulton Group N.A., Inc. Fully-wetted, refractory-free tubeless fluid heating system with negligible thermal expansion stress
CN105698366B (en) * 2014-12-11 2022-03-15 杭州富尔顿热能设备有限公司 Fully wet heat-free material tubeless fluid heating system with negligible thermal expansion stress
WO2019169397A1 (en) * 2018-03-02 2019-09-06 Fulton Group N.A., Inc. Multisection tubeless heat exchanger, fluid heating system including the same, and methods of manufacture thereof
WO2023122848A1 (en) * 2021-12-29 2023-07-06 Universidad Técnica Federico Santa María Dual system for heating air or other gases by means of direct or indirect combustion
KR102539099B1 (en) * 2022-04-20 2023-05-31 서석준 Hot air circulator used outdoors

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