JPS61259096A - Heat exchanger type blower - Google Patents

Abstract

PURPOSE:To increase the catalytic effect between an air flow and a main plate to improve the heat exchange efficiency by forming corrugated portions on the main plate in a substantially concentric shape, putting an air stream flowing along both surfaces of the main plate into a turbulent flow state and agitating the same. CONSTITUTION:The casing 9 of the heat-exchange type blower 10 is disposed in an outer box 1 in a state of confronting the rear surface of a drum 6, and a main plate 11 disposed within the casing 9 is rotatably supported on a shaft 8 through a boss portion 12. The main plate 11 divides the interior of the casing 9 into a front exhaust air inlet chamber 13 and a rear external air inlet chamber 14. In the main plate 11 is concentrically formed a corrugated portion 15 at its substantially entire region, and on both surfaces of the main plate 11 are radially projected blade pieces 16 and 17. Accordingly, by the centrifugal blowing operation of the blade pieces 16 and 17 an air stream flowing along both surfaces of the main plate 11 in its diametral direction flows in a manner of intercrossing the corrugated portions. Thus, by the synergistic effect of the turbulent flow of the air stream due to the corrugated portions 15 and enlargement of the heat exchange efficiency is positively improved.

Description

【発明の詳細な説明】 ［発明の技術分野］ 本発明は、送風機能と熱交換機能を併せ有する構成の熱
交換型送風機に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a heat exchange type blower configured to have both an air blowing function and a heat exchange function.

［発明の技術的背景〕 従来より、この種の熱交換型送風機としては、円板状の
主板の両面に、複数の翼片を放射状に突設して構成し、
以って主板の回転に伴う翼片の送風作用により主板の両
側に夫々中心側から外周側に向かう空気流を生ぜしめて
両空気流間で主板を介して熱交換させるようにしたもの
がある。[Technical Background of the Invention] Conventionally, this type of heat exchange type blower has been constructed by having a plurality of blades protruding radially from both sides of a disc-shaped main plate.
Therefore, there are some devices in which airflow is generated on both sides of the main plate from the center toward the outer circumference by the blowing action of the blades as the main plate rotates, and heat is exchanged between the two air flows via the main plate.

［背景技術の問題点］ ところで、雨空気流は主板を介して熱交換することから
、熱交換効率を向上させるには空気流全体を主板にまん
べくなく接触させるようにすることが望ましい。しかる
に、前記従来構成では、主板の両面が平坦になっている
ため、空気流は主板の両面に沿ってあまり乱されること
なく流れ、空気流全体を主板にまんべｌυなく接触させ
ることができず、熱交換効率に劣る欠点があった。この
ため、必゛要な熱交換量を確保するために勢い全体を大
形化したり、或いは主板を伝熱性に優れた高価な合金製
とせねばならず、製造コストが高くなる欠点があった。[Problems with Background Art] Incidentally, since the rain air flow exchanges heat through the main plate, it is desirable to bring the entire air flow into contact with the main plate as evenly as possible in order to improve heat exchange efficiency. However, in the conventional configuration, since both sides of the main plate are flat, the airflow flows along both sides of the main plate without being disturbed much, and the entire airflow can be brought into contact with the main plate evenly. First, it had the disadvantage of poor heat exchange efficiency. For this reason, in order to secure the necessary amount of heat exchange, the entire force must be increased in size, or the main plate must be made of an expensive alloy with excellent heat conductivity, which has the disadvantage of increasing manufacturing costs.

［発明の目的］ 本発明は上記事情を考慮してなされたもので、従ってそ
の目的は、空気流と主板との接触効果を増して熱交換効
率を向上させることができる熱交換型送風機を提供する
にある。[Object of the Invention] The present invention has been made in consideration of the above circumstances, and therefore, its object is to provide a heat exchange type blower that can improve the heat exchange efficiency by increasing the contact effect between the air flow and the main plate. There is something to do.

［発明の概要］ 本発明は、主板に波形部を略同心円状に形成した構成と
し、以って主板の両面に沿って流れる空気流を波形部に
より乱流状態にして撹拌できるようにしたものである。[Summary of the Invention] The present invention has a structure in which corrugated portions are formed on the main plate in substantially concentric circles, so that the airflow flowing along both sides of the main plate can be made turbulent by the corrugated portions and stirred. It is.

［発明の実施例］ 以下、本発明をドラム式乾燥機に適用した第１実施例に
ついて第１図及び第２図を参照して説明する。[Embodiments of the Invention] Hereinafter, a first embodiment in which the present invention is applied to a drum dryer will be described with reference to FIGS. 1 and 2.

１は外箱で、前面にｔｉ１２により開閉される被乾燥物
の出入口３を形成している。４は外箱１の前面裏側に固
定した支持板で、中央部に出入口３に連通ずる連通口５
を形成している。６はドラムで、前面側を支持板４の外
周に回転可能に嵌合支持せしめるど共に、後面側を外箱
１の後部に固定した横枠７に軸８を介して回転可能に支
持せしめている。９は熱交換型送風機１機１０のケーシ
ングで、外箱１内にドラム６の後面と対向状態に配設さ
れている。１１はケーシング９内に配設した主板で、こ
れはボス部１２を介して軸８に回転自在に支持されてい
る。この主板１１によりケーシング９内を、前方の排気
導入室１３と後方の外気導入室１４とに区分している。Reference numeral 1 denotes an outer box, on the front surface of which is formed an inlet/outlet 3 for the material to be dried, which is opened and closed by a ti12. 4 is a support plate fixed to the front back side of the outer box 1, and a communication port 5 communicating with the doorway 3 is provided in the center.
is formed. Reference numeral 6 denotes a drum, whose front side is rotatably fitted and supported on the outer periphery of the support plate 4, and whose rear side is rotatably supported via a shaft 8 on a horizontal frame 7 fixed to the rear of the outer box 1. There is. Reference numeral 9 denotes a casing of one heat exchange type blower 10, which is disposed in the outer box 1 so as to face the rear surface of the drum 6. Reference numeral 11 denotes a main plate disposed within the casing 9, which is rotatably supported by the shaft 8 via a boss portion 12. The main plate 11 divides the inside of the casing 9 into an exhaust gas introduction chamber 13 at the front and an outside air introduction chamber 14 at the rear.

而して、主板１１にはその略全領域にわたって波形部１
５を同心円状に形成し、且つ主板１１の両面にはＷ片１
６．１７を放Ｑ１状に突設している。特に本実施例では
、主板１１、彌片１６．１７及びボス部１２を例えばプ
ラスチックの一体成形により形成すると共に、排気導入
室１３側の翼片１６のうちの複数個例えば４１個（第２
図参照）を伯のものよりも主板１１側に延長してボス部
１２と一体化している。更に、排気導入室１３側の翼片
１６の数を外気導入室１４側の翼片１７の数よりも少な
く形設している。そして、ドラム６からの排気を排気導
入室１３内に吸引し且つドラム６内に戻すためにケーシ
ング９の中央部にドラム６の空気出口１８に連通ずる通
気口１９を形成すると共に、排気導入室１３の出口１３
ａをダクト２０を介して前記支持板４の下部位に形成し
たドラム６の空気人口２１に連通せしめている。また、
外気導入室１４内に外気を吸引し且つ吐出するために外
箱１の背板２２に吸入口２３及び吐出口２４を形成して
いる。２５はドラム６及び主板１１を回転駆動するモー
タ、２６は空気入口２１部分に配設したヒータである。Therefore, the corrugated portion 1 is formed on the main plate 11 over substantially the entire area thereof.
5 are formed concentrically, and W pieces 1 are formed on both sides of the main plate 11.
6.17 is provided in a protruding Q1 shape. In particular, in this embodiment, the main plate 11, the cover pieces 16, 17, and the boss portion 12 are formed by integrally molding plastic, for example, and a plurality of blades 16, for example, 41 (second
(see figure) is extended closer to the main plate 11 than the other part and is integrated with the boss part 12. Further, the number of blades 16 on the exhaust gas introduction chamber 13 side is smaller than the number of blades 17 on the outside air introduction chamber 14 side. A vent hole 19 is formed in the center of the casing 9 to communicate with the air outlet 18 of the drum 6 in order to suck the exhaust gas from the drum 6 into the exhaust introduction chamber 13 and return it into the drum 6. 13 exit 13
a is communicated via a duct 20 with an air mass 21 of the drum 6 formed at the lower portion of the support plate 4. Also,
A suction port 23 and a discharge port 24 are formed in the back plate 22 of the outer box 1 for sucking and discharging outside air into the outside air introduction chamber 14. 25 is a motor that rotationally drives the drum 6 and the main plate 11, and 26 is a heater disposed at the air inlet 21 portion.

次に上記構成の作用を説明する。Next, the operation of the above configuration will be explained.

乾燥運転が開始されると、モータ２５及びヒータ２６が
通電される。この通電によりモータ２５が起動すると、
ドラム６及び主板１１が回転し、主板１１の回転に基づ
く翼片１６及び１７の遠心送風作用によりドラム６内の
空気が排気導入室１３内に吸引され且つダクト２０を介
してドラム６内に戻される過程でヒータ２６により熱風
化されると共に、外気が吸入口２３から外気導入室１４
内に吸引され且つ吐出口２４から外方に吐出される。そ
して、ヒータ２６により加熱されてドラム６内に供給さ
れた空気はここで被乾燥物から水分を奪った後、再び排
気導入￥１３内に吸引され、これにより排気導入室１３
内で主板１１に沿ってその径方向に流れる高温多湿の空
気流が生成される。一方、外気導入室１４内では前述し
たように主板１１に沿ってその径方向に流れる外気によ
る′低温の空気流が生成されるから、排気導入室１３側
の高温多湿の空気流が主板１１及び翼片１６゜１７を介
する熱伝達により外気導入室１４側の低温の空気流と熱
交換して冷に１除湿され、然る後再加熱されてドラム６
内に供給されるというように循環する。When the drying operation is started, the motor 25 and the heater 26 are energized. When the motor 25 is started by this energization,
The drum 6 and the main plate 11 rotate, and the air inside the drum 6 is sucked into the exhaust introduction chamber 13 by the centrifugal blowing action of the blades 16 and 17 based on the rotation of the main plate 11, and is returned into the drum 6 via the duct 20. In the process of heating, the outside air is hot-aired by the heater 26, and the outside air is drawn into the outside air introduction chamber 14 from the intake port 23.
It is sucked in and discharged outward from the discharge port 24. The air heated by the heater 26 and supplied into the drum 6 removes moisture from the material to be dried, and then is sucked into the exhaust introduction chamber 13 again.
A hot and humid air flow is generated that flows within the main plate 11 in its radial direction. On the other hand, in the outside air introduction chamber 14, a low-temperature air flow is generated by the outside air flowing in the radial direction along the main plate 11 as described above, so that the hot and humid air flow on the exhaust introduction chamber 13 side Through heat transfer through the blades 16 and 17, the air is cooled and dehumidified by exchanging heat with the low-temperature air flow on the outside air introduction chamber 14 side, and is then reheated and sent to the drum 6.
It circulates as it is supplied within the body.

ところで、雨空気流は主板１１を介して熱交換すること
から、熱交換効率を向上させるには空気流全体を主板１
１にまんべんなく接触させるようにすることが望ましい
。この点、本実施例では主板１１に波形部１５を同心円
状に形成しているので、Ｗ片１６．１７の遠心送風作用
により主板１１の両面に沿ってその径方向に流れる空気
流は波形部１５を横切るように流れるようになり、その
結果、空気流が波形部１５により乱されて撹拌されつつ
径方向外方に流れ、これにより空気流全体が主板１１に
まんべんなく接触するようになる。By the way, since the rain air flow exchanges heat through the main plate 11, in order to improve the heat exchange efficiency, the entire air flow is transferred to the main plate 11.
It is desirable to make contact with 1 evenly. In this regard, in this embodiment, since the corrugated portions 15 are concentrically formed on the main plate 11, the airflow flowing in the radial direction along both sides of the main plate 11 due to the centrifugal blowing action of the W pieces 16 and 17 is directed to the corrugated portions. As a result, the air flow is disturbed and stirred by the corrugated portion 15 and flows radially outward, so that the entire air flow evenly contacts the main plate 11.

しかも、主板１１に波形部１５を形成しているため、従
来の平板状の主板に比して伝熱面積が大きくなっている
。従って、上述した波形部１５による空気流を乱流状態
にする効果と伝熱面積を拡大する効果との相乗作用によ
り、熱交換効率が確実に向上する。このため、本実施例
のように主板１１をプラスチックにより形成したとして
も、さほど外形寸法を大きくせずとも必要な交換熱量を
十分に確保できるようになり、全体の小形化と製造コス
トの低減化とを同時に達成できる。Moreover, since the corrugated portion 15 is formed on the main plate 11, the heat transfer area is larger than that of a conventional flat main plate. Therefore, the synergistic effect of the above-mentioned effect of making the air flow into a turbulent state by the corrugated portion 15 and the effect of enlarging the heat transfer area reliably improves the heat exchange efficiency. Therefore, even if the main plate 11 is made of plastic as in this embodiment, it is possible to secure a sufficient amount of heat exchanged without increasing the external dimensions, resulting in overall miniaturization and lower manufacturing costs. can be achieved at the same time.

また、本実施例では翼片１６，１７を主板１１に一体成
形したから、主板に別体の翼片を取着する構成とした場
合に比して、翼片１６．１７と主板１１との間の接触具
合による熱伝達抵抗が存在しなくなる分、Ｍ片１６．１
７と主板１１°との間の伝熱性を向上させることができ
る。これにより、興片１６．１７から主板１１を介して
の熱交換を増大させることができて、熱交換効率を一層
向上させることができる。Furthermore, in this embodiment, since the blades 16 and 17 are integrally molded with the main plate 11, the relationship between the blades 16 and 17 and the main plate 11 is greater than in the case where separate blades are attached to the main plate. Since there is no heat transfer resistance due to the contact condition between the M piece 16.1
7 and the main plate 11° can be improved. Thereby, heat exchange from the hinges 16 and 17 via the main plate 11 can be increased, and heat exchange efficiency can be further improved.

更に、本実施例では排気導入室１３側の翼片１６のうち
の複数個のものを他のものよりも主板１１側に延長して
いるため、これら複数個の翼片１６が主板１１の補強リ
ブとしても作用するようになり、主板１１の強度が増大
する。　　尚、この第１実施例のように本発明をドラム
式乾燥機に適用した場合、主板１１のうち排気導入ｖ１
３側の面ではドラム６からの排気中の水分が凝縮するた
め、排気導入室１３側は外気導入室１４側に比べ熱伝達
率が非常に高い（およそ外気導入室１４側の１０〜１０
０倍）。従って、熱交換効率は、主板１１及び翼片１６
．１７から外気への熱伝達量換言すれば外気導入室１４
側の伝熱面積の大小により支配され、排気導入室１３側
の伝熱面積は小さくとも熱交換効率の低下はほとんどな
い。斯かる事情を考慮して、第１実施例では排気導入室
１３側の翼片１６の数を外気導入室１４側の翼片１７の
数よりも少なくしているから、その分材料コストが低減
する。Furthermore, in this embodiment, since a plurality of the blades 16 on the exhaust introduction chamber 13 side are extended closer to the main plate 11 than the others, these plurality of blades 16 reinforce the main plate 11. It also functions as a rib, increasing the strength of the main plate 11. Incidentally, when the present invention is applied to a drum dryer as in the first embodiment, the exhaust gas introduction v1 of the main plate 11
Since moisture in the exhaust air from the drum 6 condenses on the third side, the heat transfer coefficient on the exhaust gas introduction chamber 13 side is much higher than that on the outside air introduction chamber 14 side (approximately 10 to 10% on the outside air introduction chamber 14 side).
0 times). Therefore, the heat exchange efficiency of the main plate 11 and the blade 16
．． Amount of heat transferred from 17 to outside air In other words, outside air introduction chamber 14
Even if the heat transfer area on the exhaust introduction chamber 13 side is small, there is almost no decrease in heat exchange efficiency. Considering these circumstances, in the first embodiment, the number of blades 16 on the exhaust introduction chamber 13 side is smaller than the number of blades 17 on the outside air introduction chamber 14 side, so the material cost is reduced accordingly. do.

第３図は本発明の第２実施例を示したものであり、上記
第１実施例との相違は波形部２７を主板１１の外周側ほ
ど高く形成したところにある。FIG. 3 shows a second embodiment of the present invention, which differs from the first embodiment in that the corrugated portion 27 is formed higher toward the outer circumference of the main plate 11.

ところで、波形部２７の高さ寸法を大きくすれば、空気
流がより大きく乱されて、空気流の撹拌には一層好都合
であるが、しかし、波形部２７の高さ寸法を主板１１の
中心側部分（吸入側部分）で大きくすると、この部分で
の通風抵抗が大きくなり過ぎて、空気の吸入量が減少し
てしまう。而して、翼片１６．．１７の遠心送風作用に
より生起される空気流の流速は主板１１の外周側ほど速
くなるから、外周側で通風抵抗がある程度大きくなって
も空気の流通性はそれほど阻害されることはない。Incidentally, if the height of the corrugated portion 27 is increased, the airflow will be disturbed more, which is more convenient for stirring the airflow. If it is made larger in that part (the suction side part), the ventilation resistance in this part will become too large and the amount of air taken in will decrease. Therefore, wing piece 16. ．． Since the flow velocity of the air flow generated by the centrifugal blowing action of 17 becomes faster toward the outer periphery of the main plate 11, even if the ventilation resistance increases to some extent on the outer periphery, the air circulation is not hindered much.

斯かる事情を考慮して、第２実施例では波形部２７を主
板１１の中心側で低く且つ外周側ほど高くするように形
成したから、主板１１の中心側部分く吸入側部分）での
通風抵抗を小さく抑えて、空気の吸入ｍ従って送風量を
増加ざ往ながら、外周側ほど高くな−る波形部２７、に
より空気流全体を十分に乱流状態にして主板１１の中心
側部分から外周側部分に至るまでまんべＩυなく接触さ
せることかでき、熱交換を効率良く行わしめることがで
きる。Considering this situation, in the second embodiment, the corrugated portion 27 is formed to be lower at the center of the main plate 11 and higher toward the outer periphery. While keeping the resistance low and increasing the air intake m and therefore the air blowing amount, the corrugated portion 27, which becomes higher toward the outer circumference, makes the entire airflow into a sufficiently turbulent state from the center side of the main plate 11 to the outer circumference. It is possible to contact even the side portions evenly, and heat exchange can be carried out efficiently.

尚、主板１１に形成する波形部１５．’２７は必ずしも
正確な同心円状に形成せずども略同心円状に形成すれば
良く、従って例えば第４図に承り第３実施例のように波
形部２８を渦巻き状に形成したり、第５図に示す第４実
施例のように波形部２９を同心の楕円状或いは円弧状に
形成してｂ、本発明の所１ｌｌ）の目的は十分に達成で
きる。Note that the corrugated portion 15 formed on the main plate 11. '27 need not necessarily be formed in an exact concentric circle shape, but may be formed in a substantially concentric shape. Therefore, for example, the waveform part 28 can be formed in a spiral shape as in the third embodiment according to FIG. If the waveform portion 29 is formed into a concentric elliptical shape or an arc shape as in the fourth embodiment shown in FIG.

［発明の効果］ 本発明は以上の説明から明らかなように主板に波形部を
略同心円状に形成したので、主板の両面に沿って流れる
空気流を波形部により乱して撹拌することができ、以っ
て空気流全体を主板にまんべんな（接触させることがで
きて、熱交換効率を向上させることができるという優れ
た熱交換型送風機を提供できる。[Effects of the Invention] As is clear from the above description, in the present invention, the corrugated portions are formed on the main plate in substantially concentric circles, so that the airflow flowing along both sides of the main plate can be disturbed and stirred by the corrugated portions. Therefore, it is possible to provide an excellent heat exchange type blower in which the entire airflow can be brought into even contact with the main plate, and the heat exchange efficiency can be improved.

【図面の簡単な説明】[Brief explanation of drawings]

第１図及び第２図は本発明をドラム式乾燥機に適用した
第１実施例を示したもので、第１図は全体の縦断側面図
、第２図は要部の拡大正面図、第３図は本発明の第２実
施例を示した要部の拡大縦断側面図、第４図は本発明の
第３実施例を示した主板の正面図、第５図は本発明の第
４実施例を示した第４図相当図である。 図面中、１１は主板、１５は波形部、１６及び１７は舅
片、２７．２８及び２９は波形部である。 出願人　　株式会社　　東　　芝 ｌＡ　１　図 ？！　２　（２） 第　３　図1 and 2 show a first embodiment in which the present invention is applied to a drum dryer. FIG. 1 is an overall longitudinal sectional side view, FIG. 3 is an enlarged vertical sectional side view of the main part showing the second embodiment of the present invention, FIG. 4 is a front view of the main plate showing the third embodiment of the present invention, and FIG. 5 is a fourth embodiment of the present invention. FIG. 4 is a diagram equivalent to FIG. 4 showing an example. In the drawings, 11 is a main plate, 15 is a corrugated portion, 16 and 17 are leg pieces, and 27, 28 and 29 are corrugated portions. Applicant: Toshiba Corporation 1A Figure? ! 2 (2) Figure 3

Claims (1)

【特許請求の範囲】 １、回転される主板の両側に翼片を突設して成り、主板
の回転に伴う翼片の送風作用により主板の両側に夫々空
気流を生ぜしめて両空気流間で熱交換させるようにした
ものにおいて、前記主板に波形部を略同心円状に形成し
たことを特徴とする熱交換型送風機。 ２、波形部は主板の外周側ほど高く形成されていること
を特徴とする特許請求の範囲第１項に記載の熱交換型送
風機。 ３、翼片は主板に一体形成されていることを特徴とする
特許請求の範囲第１項又は第２項に記載の熱交換型送風
機。 ４、翼片のうちの複数個のものは他のものよりも主板の
中心側に延長されていることを特徴とする特許請求の範
囲第１項乃至第３項のいずれかに記載の熱交換型送風機
。[Scope of Claims] 1. A main plate that is rotated has blades protruding from both sides, and airflow is generated on both sides of the main plate by the blowing action of the blades as the main plate rotates, and between the two airflows. 1. A heat exchange type blower configured to exchange heat, characterized in that the main plate has corrugated portions formed in substantially concentric circles. 2. The heat exchange type blower according to claim 1, wherein the corrugated portion is formed higher toward the outer circumference of the main plate. 3. The heat exchange type blower according to claim 1 or 2, wherein the blades are integrally formed with the main plate. 4. The heat exchanger according to any one of claims 1 to 3, wherein a plurality of the blades are extended closer to the center of the main plate than the other blades. type blower.