JPH05133610A - Hot air space heater - Google Patents
Hot air space heaterInfo
- Publication number
- JPH05133610A JPH05133610A JP3295954A JP29595491A JPH05133610A JP H05133610 A JPH05133610 A JP H05133610A JP 3295954 A JP3295954 A JP 3295954A JP 29595491 A JP29595491 A JP 29595491A JP H05133610 A JPH05133610 A JP H05133610A
- Authority
- JP
- Japan
- Prior art keywords
- blower
- guide plate
- suction port
- air heater
- wind
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Greenhouses (AREA)
- Direct Air Heating By Heater Or Combustion Gas (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は施設園芸用の温風暖房機
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm air heater for gardening in a facility.
【０００２】[0002]
【従来の技術】従来の施設園芸用の温風暖房器は、図４
に示すように火炉１とこの火炉１に連絡する多数の煙管
２を収容した密閉状機体の煙管収容部ａ上方に吸入口６
を、また火炉収容部下方に吐出口７を夫々開設し、上記
吸入口６上部には該口６に臨ませて送風機10を配備した
構造が一般的であり、吸入口６には送風機10からの風を
煙管部分に案内するために、その口縁から機体Ａ内に延
び、かつ吸入口６の中心方向に下向きに傾斜する平板状
の送風案内板11が設けられている。また、施設園芸用温
風暖房機では、一般に固定翼のない軸流形の送風機を使
用するのが普通であり、暖房機運転時の送風機の使用点
静圧は高めである。2. Description of the Related Art A conventional hot air heater for gardening is shown in FIG.
As shown in FIG. 1, the suction port 6 is provided above the smoke pipe housing portion a of the closed airframe that houses the furnace 1 and a large number of smoke pipes 2 communicating with the furnace 1.
In general, a discharge port 7 is opened below the furnace housing, and a blower 10 is provided above the suction port 6 so as to face the suction port 6. In order to guide the wind to the smoke pipe portion, there is provided a flat air guide plate 11 extending from the rim into the airframe A and inclined downward toward the center of the suction port 6. Further, in a warm air heater for horticulture, generally, an axial-flow type blower without fixed blades is generally used, and the static pressure at the operating point of the blower when the heater is operating is high.
【０００３】そして、このような従来の施設園芸用温風
暖房機は、吐出口に送風用ダクトを接続することにより
排気抵抗が増大すると、熱交換効率が低下するばかりで
なく、それにより冷却効果が非常に悪くなって火炉の後
面壁板（管板）等局部的に過加熱の状態になるなどの障
害が発生し、そのため高性能送風機を用いることが必要
となり、製品価格をアップさせる要因となっている。In such a conventional hot-air heater for horticulture, when the exhaust resistance is increased by connecting the ventilation duct to the discharge port, not only the heat exchange efficiency is lowered but also the cooling effect is obtained. Becomes very bad and causes problems such as locally overheating the rear wall plate (tube plate) of the furnace. Therefore, it is necessary to use a high-performance blower, which increases the product price. Has become.
【０００４】[0004]
【発明が解決しようとする課題】本願発明者らは斯る現
況に鑑み研究を重ねた結果、従来技術における上記障害
発生の原因について次のような知見を得た。即ち、軸流
形送風機の性能曲線は図５に示す通りで、温風暖房機の
吐出口に送風用ダクト取り付けがない場合の作動点は図
５中のダクト無位置となり、このときの風向きは図６に
おいて符号ロで示す軸流方向となっている。ところが、
吐出口にダクトを取り付けると静圧が上昇し図５中のダ
クト有位置の作動点となり、送風機羽根車よりの風向き
は図６において符号イで示す直角方向への流れとなり、
軸流方向への流れは全く無くなってしまう。この現象
は、風胴試験装置（チャンバ方式）にて測定すると約10
mmＡｑを境に現れ、静圧が上昇していくと次第に直角方
向の流れが多くなり15mmＡｑ以上になると全て直角方向
の流れのみとなる。そして、この直角方向の変流が送風
案内板に衝突することにより風の吹き返しが多くなった
り、静圧変動によるサージング状態になり、前述の障害
を引き起こす。DISCLOSURE OF THE INVENTION As a result of repeated studies in view of the present situation, the inventors of the present application have obtained the following findings regarding the cause of the above-mentioned failure occurrence in the prior art. That is, the performance curve of the axial flow type blower is as shown in FIG. 5, and the operating point when there is no ventilation duct attached to the outlet of the warm air heater is the duct no position in FIG. 5, and the wind direction at this time is In FIG. 6, the direction of the axial flow is indicated by the reference numeral B. However,
When a duct is attached to the discharge port, the static pressure rises to become the operating point where the duct is located in FIG. 5, and the wind direction from the blower impeller becomes a flow in the right angle direction indicated by the symbol a in FIG.
The flow in the axial direction disappears at all. This phenomenon is about 10 when measured with a wind tunnel tester (chamber method).
Appearing at the boundary of mmAq, the flow in the perpendicular direction gradually increases as the static pressure rises, and when it exceeds 15 mmAq, only the flow in the perpendicular direction becomes all. Then, the current change in the right angle collides with the blower guide plate to increase the amount of blowback of the wind, or the surging state due to the static pressure fluctuation causes the above-mentioned obstacle.
【０００５】本発明は上記知見に基づいてなされたもの
であり、その目的とするところは、直角方向の変流を効
果的に機体内に導入して風の吹き返しを無くすことによ
り、高性能送風機の必要を無くし、製品コストの低減を
図ることである。The present invention has been made on the basis of the above-mentioned findings, and an object thereof is to efficiently introduce a current change in a direction perpendicular to the inside of the body to eliminate the blowback of the wind, thereby achieving a high performance blower. It is to eliminate the need for and reduce the product cost.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に本発明の施設園芸用温風暖房機では、送風機からの送
風を機体内に導入すべく機体に開設される吸入口部に、
吸入口に臨んで設けられる送風器の軸心に対し、機体の
奥に向かって上記軸心から離れる方向に傾斜する傾斜面
とこの傾斜面に連続して上記軸心に近付く方向に傾斜す
る傾斜面とからなる湾曲断面に形成した送風案内板を設
置するものである。In order to achieve the above-mentioned object, in a warm air heater for facility horticulture of the present invention, a suction port portion opened in the airframe to introduce air from the air blower into the airframe,
With respect to the axial center of the blower provided facing the suction port, an inclined surface that inclines toward the back of the machine body in a direction away from the axial center, and an inclined surface that is continuous with the inclined surface in a direction that approaches the axial center. A blower guide plate having a curved cross section including a surface is installed.
【０００７】[0007]
【作用】以上のように構成した施設園芸用温風暖房機に
あっては、送風機軸心に対して直角方向となる送風が送
風案内板の湾曲面に沿ってその流れを妨げられること無
く機体内の奥までスムーズに導入される。In the warm air heater for facility horticulture constructed as described above, the blast air perpendicular to the blower axis is not obstructed along the curved surface of the blast guide plate. It is smoothly introduced deep inside the body.
【０００８】[0008]
【実施例】以下、図に基づいて本発明の実施の一例を説
明する。図１においてＡは箱状に形成された機体、Ｂは
それを支えるフレーム状の架台であり、機体Ａの内部に
はその横方向一半部に円筒状の火炉１が、また他半部に
煙管２が夫々機体Ａ内面との間に空隙３を存して収納配
備されている。煙管２は火炉１と中心を同じくする複数
の同心円の夫々に相互に所定間隔を有して多数が横平行
に設けられ、夫々一端が火炉１に連通連絡し、他端が煙
室部４を介して煙突５に連絡するようになっている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, A is a box-shaped airframe, B is a frame-shaped pedestal that supports it, and inside the airframe A, a cylindrical furnace 1 is provided in one half of the lateral direction and a smoke tube is provided in the other half. 2 are housed and arranged with an air gap 3 between them and the inner surface of the airframe A, respectively. A plurality of smoke tubes 2 are provided in parallel in a plurality of concentric circles having the same center as that of the furnace 1 at predetermined intervals, and one end of each of the smoke tubes 2 communicates with the furnace 1 and the other end of the smoke chamber 4 is connected. The chimney 5 is contacted via the.
【０００９】そして、前記機体Ａには煙管２を収容する
部分ａの上面に吸入口６が開設され、火炉１を収容する
部分ｂの下面に吐出口７が設けられており、上記吸入口
６上にはベルマウス８が設けられ、更にアーム９を介し
て軸流形送風機10が吸入口６に臨んで装着されている。
また、機体Ａには、吸入口６部分に送風機10からの風を
機体Ａの煙管収容部ａ内に案内するための送風案内板11
が設けられている。The airframe A is provided with an intake port 6 on the upper surface of the portion a for accommodating the smoke tube 2, and a discharge port 7 on the lower surface of the portion b for accommodating the furnace 1. A bell mouth 8 is provided on the upper side, and an axial flow type blower 10 is attached to the suction port 6 via an arm 9.
Further, in the airframe A, a blower guide plate 11 for guiding the wind from the blower 10 into the smoke pipe accommodating portion a of the airframe A at the inlet 6 part.
Is provided.
【００１０】送風案内板11は、吸入口６部分から機体Ａ
内に垂下して下端が最も外側に位置する煙管２に近接す
るように設けられており、下方が送風機10の軸心から外
方へ離れる方向に傾斜させた上半部と、該上半部とは逆
に下方が送風機軸心に向かって近付く方向に傾斜させた
下半部とにより縦方向内向き凹状の湾曲断面に形成され
ている。The blower guide plate 11 starts from the suction port 6 portion and then reaches the airframe A.
An upper half part which is provided so as to hang inward and a lower end thereof is close to the outermost smoke tube 2 and whose lower part is inclined outward in a direction away from the axis of the blower 10, and the upper half part. On the contrary, the lower part is formed in a curved cross section that is concave inward in the vertical direction by the lower half that is inclined in the direction approaching the blower shaft center.
【００１１】この送風案内板11は、図示の如く平面から
見て吸入口６と中心を同じくする連続した円形を呈する
ように設けられるのが望ましいが、一つが円周上のでき
るだけ大きな部分を占める複数のベーン状に分割して形
成し、この複数のベーンを同一円周上に相互に適当な間
隔を置いて設けるようにしてもよい。It is desirable that the blower guide plate 11 is provided so as to have a continuous circular shape having the same center as the suction port 6 when viewed from the plane as shown, but one occupies as large a portion as possible on the circumference. It may be formed by dividing into a plurality of vanes, and the plurality of vanes may be provided on the same circumference at appropriate intervals.
【００１２】而して、斯る温風暖房機は、吐出口７にダ
クトを取り付けることにより静圧が上昇し、図６におい
て符号イで示すように送風機軸心に対して直角方向への
流れとなる送風器羽根車10a からの風を、送風案内板11
の縦方向内向き凹状の湾曲面により案内して機体Ａ内の
奥に送り込む。即ち、送風機Ａの軸心に対して直角方向
に流れる送風機10からの風は、先ず送風案内板11上半部
の送風機軸心から離れる外方への下向き傾斜面に沿って
その流れを妨げられることなく吸入口６から機体Ａ内に
案内された後、続いて送風案内板11下半部の送風機軸心
に近付く内方への下向き傾斜面に沿って方向を変えなが
ら機体Ａ内の奥に案内される。この際、送風機10からの
風は、送風機羽根車10a により旋回状に発生されるた
め、送風案内板11の縦方向内向き凹の湾曲面に沿って回
転しながら下方へ潜り込むような状態で機体Ａ内の奥に
案内されることになり、その結果風の吹き返しはほとん
ど生じない。Thus, in such a warm air heater, the static pressure rises by attaching the duct to the discharge port 7, and the flow in the direction perpendicular to the axis of the blower as shown by reference numeral a in FIG. The air from the blower impeller 10a is
It is guided by the curved surface of the concave portion facing inward in the vertical direction and is fed into the interior of the machine body A. That is, the wind from the blower 10 that flows in the direction perpendicular to the axis of the blower A is blocked first along the outward downward inclined surface away from the blower axis of the upper half of the blower guide plate 11. After being guided through the suction port 6 into the airframe A without changing, the airflow guide plate 11 is moved to the inner part of the airframe A while changing its direction along an inward downward sloping surface that approaches the blower shaft center. Be guided. At this time, since the wind from the blower 10 is generated in a swirling manner by the blower impeller 10a, the wind blows in the downward direction while rotating along the curved surface of the blower guide plate 11 which is concave inward in the vertical direction. It will be guided deep inside A, and as a result, there will be almost no wind blowback.
【００１３】従って、送風機で発生され吸入口６に供給
される風のほとんどは確実に機体Ａ内に導入されて煙管
２お呼び火炉１と接触して熱交換されて吐出口７から吐
出されることになり、機体Ａ内の冷却効果を向上させ
る。Therefore, most of the wind generated by the blower and supplied to the suction port 6 is surely introduced into the airframe A, comes into contact with the smoke tube 2 and the fire furnace 1, and is heat-exchanged and discharged from the discharge port 7. Therefore, the cooling effect inside the machine body A is improved.
【００１４】本発明を実施した施設園芸用温風暖房機
と、図４に示した従来構造の施設園芸用温風暖房機につ
いて冷却性能比較テストを行った処、表１の如き結果を
得た。The results of Table 1 were obtained when the cooling performance comparison test was carried out for the facility horticultural warm air heater according to the present invention and the conventional horticultural warm air heater shown in FIG. .
【表１】 表１から明らかなように、本発明の温風暖房機は従来の
温風暖房機に比べて火炉後面温度が80℃も低くなり、冷
却効果が著しく向上した。[Table 1] As is clear from Table 1, the warm air heater of the present invention has a lower furnace rear surface temperature of 80 ° C. as compared with the conventional warm air heater, and the cooling effect is remarkably improved.
【００１５】[0015]
【効果】本発明は以上のように、吸入口から機体内に延
ばして設ける送風案内板を、送風器の軸心に対し、機体
の奥に向かって上記軸心から離れる方向に傾斜する傾斜
面とこの傾斜面に連続して上記軸心に近付く方向に傾斜
する傾斜面とからなる湾曲断面に形成したので、吐出口
へのダクト取付けにより静圧が上昇して、送風機から吸
入口に供給される風の流れが送風機の軸心に対して直角
方向の流れとなっても、送風案内板の湾曲面により風の
流れを妨げること無く機体Ａ内の奥に案内することがで
き、風の吹き返しをおこさせない。したがって、送風機
からの風の殆ど全てを機体内に導入することができるを
もって、高性能送風機を用いなくても熱交換効率を向上
させ、機体内の冷却効果を高めて、局部的な過加熱状態
の発生を防止することができ、製品コストの低減が可能
となる。As described above, according to the present invention, the air guide plate extending from the suction port to the inside of the body is inclined with respect to the axis of the blower in the direction away from the axis toward the back of the body. Since it is formed in a curved cross section consisting of an inclined surface that is continuous with this inclined surface and that is inclined in the direction approaching the axis, static pressure rises due to duct installation at the discharge port and is supplied from the blower to the suction port. Even if the flow of wind becomes a direction perpendicular to the axis of the blower, the curved surface of the blower guide plate can guide the wind to the inner part of the airframe A without obstructing the flow of the wind, and the wind blows back. Does not cause Therefore, almost all of the wind from the blower can be introduced into the fuselage, and even without using a high-performance blower, the heat exchange efficiency is improved, the cooling effect inside the fuselage is enhanced, and the local overheating state is increased. Can be prevented and the product cost can be reduced.
【図１】本発明の一実施例を示す施設園芸用温風暖房機
の縦断正面図。FIG. 1 is a vertical cross-sectional front view of a hot-air heater for a gardening facility showing an embodiment of the present invention.
【図２】図１のＹ−Ｙ線断面図。FIG. 2 is a sectional view taken along line YY of FIG.
【図３】図１のＸ−Ｘ線断面図。FIG. 3 is a sectional view taken along line XX of FIG.
【図４】従来の施設園芸用温風暖房機の一例を示す縦断
側面図。FIG. 4 is a vertical cross-sectional side view showing an example of a conventional warm air heater for gardening.
【図５】送風機性能曲線を示すグラフ。FIG. 5 is a graph showing a blower performance curve.
【図６】送風機の吐出流の流れ方向を示す説明図。FIG. 6 is an explanatory view showing a flow direction of a discharge flow of a blower.
Ａ 機体 ６ 吸入口 10 送風機 11 送風案内板 A Airframe 6 Inlet 10 Blower 11 Blower guide plate
Claims (1)
送風機に対応して機体に開設される吸入口部に、機体内
に延びる送風案内板を設けた施設園芸用温風暖房機にお
いて、上記送風案内板を吸入口に臨んで設けられる送風
機の軸心に対し、機体の奥に向かって上記軸心から離れ
る方向に傾斜する傾斜面とこの傾斜面に連続して上記軸
心に近付く方向に傾斜する傾斜面とからなる湾曲断面に
形成したことを特徴とする施設園芸用温風暖房機。1. A warm air heater for horticulture, comprising a blower guide plate extending to the inside of the body at an inlet opening formed in the body corresponding to the blower so as to introduce air from the blower into the body, With respect to the axis of the blower provided with the blower guide plate facing the suction port, an inclined surface that inclines in a direction away from the axis toward the back of the machine body, and a direction that approaches the axis continuously with the inclined surface. A warm air heater for facility horticulture, which is characterized by being formed in a curved cross-section consisting of an inclined surface that inclines inward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3295954A JPH0752036B2 (en) | 1991-11-12 | 1991-11-12 | Hot air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3295954A JPH0752036B2 (en) | 1991-11-12 | 1991-11-12 | Hot air heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05133610A true JPH05133610A (en) | 1993-05-28 |
| JPH0752036B2 JPH0752036B2 (en) | 1995-06-05 |
Family
ID=17827255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3295954A Expired - Lifetime JPH0752036B2 (en) | 1991-11-12 | 1991-11-12 | Hot air heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0752036B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009109176A (en) * | 2008-05-07 | 2009-05-21 | Eto Zosenjo:Kk | Hot air blower |
| JP2009174820A (en) * | 2008-01-28 | 2009-08-06 | Sanshu Sangyo Co Ltd | Greenhouse horticulture hot air heater |
| JP2011145064A (en) * | 2011-03-18 | 2011-07-28 | Eto Zosenjo:Kk | Radiating fin |
| JP2012170412A (en) * | 2011-02-23 | 2012-09-10 | Sanshu Sangyo Co Ltd | Hot air heater for protected horticulture |
-
1991
- 1991-11-12 JP JP3295954A patent/JPH0752036B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009174820A (en) * | 2008-01-28 | 2009-08-06 | Sanshu Sangyo Co Ltd | Greenhouse horticulture hot air heater |
| JP2009109176A (en) * | 2008-05-07 | 2009-05-21 | Eto Zosenjo:Kk | Hot air blower |
| JP2012170412A (en) * | 2011-02-23 | 2012-09-10 | Sanshu Sangyo Co Ltd | Hot air heater for protected horticulture |
| JP2011145064A (en) * | 2011-03-18 | 2011-07-28 | Eto Zosenjo:Kk | Radiating fin |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0752036B2 (en) | 1995-06-05 |
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