JPS6022258Y2 - Ventilation fan for duct - Google Patents
Ventilation fan for ductInfo
- Publication number
- JPS6022258Y2 JPS6022258Y2 JP1980065307U JP6530780U JPS6022258Y2 JP S6022258 Y2 JPS6022258 Y2 JP S6022258Y2 JP 1980065307 U JP1980065307 U JP 1980065307U JP 6530780 U JP6530780 U JP 6530780U JP S6022258 Y2 JPS6022258 Y2 JP S6022258Y2
- Authority
- JP
- Japan
- Prior art keywords
- ventilation
- duct
- casing
- blower wheel
- ventilation fan
- 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.)
- Expired
Links
Description
【考案の詳細な説明】
この考案は天井面等に埋込まれるダクト用換気扇に係り
、特に運転時における換気ケーシング内での排気の乱流
を排除し、換気効率の改善を計るようにしたものである
。[Detailed explanation of the invention] This invention relates to a duct ventilation fan that is embedded in the ceiling surface, etc., and is designed to improve ventilation efficiency by eliminating turbulent flow of exhaust gas within the ventilation casing during operation. It is.
第１図は従来のこの種換気扇を示すもので図において１
は例えば天井面等に埋設され下方に室内空気の吸込口２
を有する換気ケーシング、３はこのケーシング内に設け
た換気用送風翼車Ａの駆動電動機、Ａはこの電動機の回
転軸上に取付基板５を介して固定された輻流羽根、６は
この輻流羽根４の吸込側に上記吸込口２を形成するオリ
フィス、７は上記ケーシング１の側面に形成された吐出
口、８はこの吐出口を外側に設けられた換気ケーシング
１の天板を示す。Figure 1 shows a conventional ventilation fan of this type.
For example, it is buried in the ceiling surface, etc., and there is an indoor air intake port 2 below.
A ventilation casing having a ventilation casing, 3 is a drive motor for a ventilation blower wheel A provided in this casing, A is a radial vane fixed on the rotating shaft of this motor via a mounting board 5, and 6 is a radial fan. An orifice forming the suction port 2 on the suction side of the blade 4, 7 a discharge port formed on the side surface of the casing 1, and 8 a top plate of the ventilation casing 1 with this discharge port provided on the outside.
このように構成された従来の換気扇では羽根４の取付基
板５とケーシング１の天板１０の下面との間にはかなり
の空間りが形成され、これがためダクト内への送風時に
この空間り部に排気の乱流が発生し当該ケーシング１内
での圧力損失ならびに騒音の原因となる等の欠点があっ
た。In the conventional ventilation fan configured in this way, a considerable space is formed between the mounting board 5 of the blades 4 and the lower surface of the top plate 10 of the casing 1, and therefore, when blowing air into the duct, this space is This has disadvantages in that turbulent flow of exhaust gas occurs, causing pressure loss and noise within the casing 1.
この考案は上記従来の欠点に鑑み換気ケーシング内での
圧力損失と騒音の原因をなす上記空間り内に第２の送風
翼車を設けることにより全体としての換気効率の改善と
騒音の低下を計るようにしたもので、以下この考案の換
気扇の一実施例を第２図により説明する。In view of the above-mentioned conventional drawbacks, this invention aims to improve overall ventilation efficiency and reduce noise by installing a second blower impeller within the space that causes pressure loss and noise within the ventilation casing. An embodiment of the ventilation fan of this invention will be described below with reference to FIG.
すなわち第２図において１〜１０で示す各部の構成は同
一符号の上記第１図の従来のそれと同一であるが、本案
の場合は上記空間りを図示のように第２の送風翼車Ｂで
埋めている点に特徴がある。That is, the configuration of each part indicated by 1 to 10 in FIG. 2 is the same as that of the conventional one shown in FIG. It is characterized by the fact that it is filled in.
すなわち換気ケーシング１の天板１０と輻流羽根４の取
付基板５との間には、この基板５に取付けられ上記天板
１０の下面に近接するように同心の輻流羽根１１が設け
られている。That is, between the top plate 10 of the ventilation casing 1 and the mounting board 5 of the radial blade 4, a concentric radiant blade 11 is provided so as to be attached to the board 5 and close to the lower surface of the top plate 10. There is.
したがってダクト内への送風時に該部に生ずる排気の乱
流はこの輻流羽根１１により整流されて円滑に吐出ロア
より吐出され、これにより換気効率が改善されるばかり
でなく騒音も少なくなりかつ消費電力もそれほど増大す
るものではない。Therefore, the turbulent flow of exhaust gas that occurs in the duct when air is blown into the duct is rectified by the ventilation vanes 11 and smoothly discharged from the discharge lower, which not only improves ventilation efficiency but also reduces noise and consumption. Power also does not increase that much.
この考案の換気扇は以上のように換気ケーシングの下方
吸込口に設けた第１の送風翼車のいわゆる反吸込側に第
２の送風翼車を設けているので上記反吸込側に生ずる排
気の乱流をこの第２の送風翼車で解消させることができ
、それだけ換気効率の改善ができるばかりでなく、騒音
も少なく、また消費動力もそれほど増大することがない
という実益を有するものである。As described above, in the ventilation fan of this invention, the second blower impeller is provided on the so-called anti-suction side of the first blower impeller provided at the lower suction port of the ventilation casing. The second blower impeller can eliminate the flow, which not only improves ventilation efficiency, but also has the practical benefits of reducing noise and not significantly increasing power consumption.
第１図は従来のダクト用換気扇を示す断面図、第２図は
この考案のダクト用換気扇の一実施例を示す断面図であ
る。
なお図中１は換気ケーシング、２はその下方吸込口、３
は駆動電動機、４は第１の送風翼車Ａの輻流羽根、５は
その取付基板、７はダクト内への吐出口、１０はケーシ
ング１の天板、１１は第２の送風翼車Ｂの輻流羽根を示
す。
その他図中同−符号は同一部分を示すものとする。FIG. 1 is a sectional view showing a conventional duct ventilation fan, and FIG. 2 is a sectional view showing an embodiment of the duct ventilation fan of this invention. In the figure, 1 is the ventilation casing, 2 is its lower suction port, and 3 is the ventilation casing.
is a drive motor, 4 is a flow blade of the first blower wheel A, 5 is its mounting board, 7 is a discharge port into the duct, 10 is the top plate of the casing 1, and 11 is the second blower wheel B. shows the radial flow vane. In other figures, the same reference numerals indicate the same parts.
Claims (2)
ロアを設けた換気ケーシング１の天板１０と内装の第１
の送風翼車Ａとの間にこの天板１０の下面に近接するよ
うに第２の送風翼車Ｂを設けたことを特徴とするダクト
用換気扇。(1) The top plate 10 of the ventilation casing 1, which has the suction port 2 on the lower side and the discharge lower into the duct on the side, and the first part of the interior
A ventilation fan for a duct, characterized in that a second blower wheel B is provided between the blower wheel A and the second blower wheel B so as to be close to the lower surface of the top plate 10.
第２の送風翼車Ｂとを単一の電動機３とその駆動軸に固
定された共通の取付基板５に上下関係に配設された同心
の輻流羽根４および１１から構成した実用新案登録請求
の範囲第１項記載のダクト用換気扇。(2) The first blower wheel A and the second blower wheel B provided in the ventilation casing 1 are arranged vertically on a common mounting board 5 fixed to a single electric motor 3 and its drive shaft. A ventilation fan for a duct according to claim 1, which comprises concentric flow vanes 4 and 11 provided as a utility model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980065307U JPS6022258Y2 (en) | 1980-05-13 | 1980-05-13 | Ventilation fan for duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980065307U JPS6022258Y2 (en) | 1980-05-13 | 1980-05-13 | Ventilation fan for duct |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56166432U JPS56166432U (en) | 1981-12-09 |
| JPS6022258Y2 true JPS6022258Y2 (en) | 1985-07-02 |
Family
ID=29659464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980065307U Expired JPS6022258Y2 (en) | 1980-05-13 | 1980-05-13 | Ventilation fan for duct |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6022258Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6214517Y2 (en) * | 1981-04-15 | 1987-04-14 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS484370Y1 (en) * | 1967-07-05 | 1973-02-03 | ||
| JPS5561253U (en) * | 1978-10-24 | 1980-04-25 |
-
1980
- 1980-05-13 JP JP1980065307U patent/JPS6022258Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56166432U (en) | 1981-12-09 |
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