JPH04123392U - Once-through blower - Google Patents
Once-through blowerInfo
- Publication number
- JPH04123392U JPH04123392U JP3818191U JP3818191U JPH04123392U JP H04123392 U JPH04123392 U JP H04123392U JP 3818191 U JP3818191 U JP 3818191U JP 3818191 U JP3818191 U JP 3818191U JP H04123392 U JPH04123392 U JP H04123392U
- Authority
- JP
- Japan
- Prior art keywords
- impeller
- casing
- blower
- once
- outer diameter
- 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
- 239000003381 stabilizer Substances 0.000 description 3
- 230000003134 recirculating effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
(57)【要約】 （修正有）
【目的】 貫流送風機の羽根車の中心からケーシングの
前壁までの距離と羽根車の外径との比を或る値に設定す
ることにより、空力特性を改善し、騒音を低減する。
【構成】 ケーシング１の上部に形成された吸込口３か
ら前方下部に形成された吹出口７に至るほぼ逆Ｌ形の気
体流路の折曲部に羽根車６を設定してなる貫流送風機に
おいて、上記羽根車の中心から上記ケーシングの前壁1a
までの距離ｄと上記羽根車の外径Ｄ2 との比ｄ／Ｄ2 を
1.0 以上に設定する。
(57) [Summary] (with amendments) [Purpose] By setting the ratio of the distance from the center of the impeller to the front wall of the casing to the outer diameter of the impeller to a certain value, the aerodynamic characteristics can be improved. Improve and reduce noise. [Structure] In a once-through blower in which an impeller 6 is set at the bend of a substantially inverted L-shaped gas flow path extending from the suction port 3 formed at the top of the casing 1 to the blowout port 7 formed at the front lower part. , from the center of the impeller to the front wall 1a of the casing
The ratio d/D2 of the distance d to the outer diameter D2 of the impeller is
Set to 1.0 or higher.
Description
【０００１】0001
本考案は空気調和機の壁掛形室内ユニットに好適な貫流送風機に関する。 The present invention relates to a once-through fan suitable for a wall-mounted indoor unit of an air conditioner.
【０００２】0002
従来の空気調和機の壁掛形室内ユニットの１例が図３に示されている。 図３において、１はケーシング、３はケーシング１の上部に形成された吸込口 、４はフィルタ、５は室内熱交換器、６は貫流送風機の羽根車、７はケーシング １の前方下部に形成された吹出口、８は吹出ル−バである。 ケーシング１によって吸込口３から吹出口７に至るほぼ逆Ｌ形の気体流路が形 成され、この気体流路の折曲部に羽根車６が設置されている。 羽根車６をその軸10まわりに矢印方向に回転すると、室11内の空気が矢印で示 すように吸込口３からケーシング1 内に吸込まれ、ケーシング１の前壁1a及び後 壁1bによって画成される吸込流路13を通って羽根車６に流入する。この吸込流路 13を流過する過程でフイルタ４により空気中の塵埃が捕捉され、熱交換器５で冷 却又は加熱されて調和空気となる。羽根車６から流出した空気はスタビライザ14 に連接された斜壁1dと背壁1cとによって画成される吹出流路15を通り吹出口７か ら吹出ル−バ８に案内されて室11内に吹出される。 An example of a conventional wall-mounted indoor unit of an air conditioner is shown in FIG. In FIG. 3, 1 is a casing, and 3 is a suction port formed in the upper part of the casing 1. , 4 is a filter, 5 is an indoor heat exchanger, 6 is a once-through fan impeller, 7 is a casing The air outlet 8 formed at the front lower part of 1 is an air outlet louver. The casing 1 forms an almost inverted L-shaped gas flow path from the inlet 3 to the outlet 7. The impeller 6 is installed at the bend of this gas flow path. When the impeller 6 is rotated around its axis 10 in the direction of the arrow, the air in the chamber 11 is moved as shown by the arrow. It is sucked into the casing 1 from the suction port 3, and the front wall 1a and rear wall of the casing 1 are It flows into the impeller 6 through the suction channel 13 defined by the wall 1b. This suction channel 13, dust in the air is captured by the filter 4 and cooled by the heat exchanger 5. The air is cooled or heated to become conditioned air. The air flowing out from the impeller 6 is sent to the stabilizer 14 The outlet 7 passes through the outlet passage 15 defined by the inclined wall 1d and the back wall 1c connected to the The air is then guided by the blowing louver 8 and blown into the chamber 11.
【０００３】0003
上記従来の室内ユニットにおいては、その騒音を低減するために、図４に示す ように、羽根車６の中心10から前壁1aまでの距離ｄを小さくするとともに羽根車 ６の外径Ｄ2 を大きくしていた。この結果、距離ｄと羽根車６の外径Ｄ2 との比 ｄ／Ｄ2 が1.0 以下になり、吸込流路13内のフローパターンが図４に示すように なって貫流送風機の空力特性が悪化するのみならずその騒音が大きくなるという 問題があった。 In the above-mentioned conventional indoor unit, in order to reduce the noise, as shown in FIG. The distance d from the center 10 of the impeller 6 to the front wall 1a is reduced, and The outer diameter D2 of 6 was increased. As a result, the ratio between the distance d and the outer diameter D2 of the impeller 6 is d/D2 becomes 1.0 or less, and the flow pattern in the suction channel 13 becomes as shown in Figure 4. This not only deteriorates the aerodynamic characteristics of the once-through blower but also increases its noise. There was a problem.
【０００４】0004
【課題を解決するための手段】 本考案は上記課題を解決するために提案されたものであって、その要旨とする ところは、ケーシングの上部に形成された吸込口から前方下部に形成された吹出 口に至るほぼ逆Ｌ形の気体流路の折曲部に羽根車を設置してなる貫流送風機にお いて、上記羽根車の中心から上記ケーシングの前壁までの距離ｄと上記羽根車の 外径Ｄ2 との比ｄ／Ｄ2 を1.0 以上に設定したことを特徴とする貫流送風機にあ る。[Means to solve the problem] This invention was proposed to solve the above problems, and its gist is as follows: However, from the suction port formed at the top of the casing to the air outlet formed at the front bottom. This is a once-through blower with an impeller installed at the bend in the almost inverted L-shaped gas flow path leading to the mouth. and the distance d from the center of the impeller to the front wall of the casing and the impeller. A once-through blower characterized in that the ratio d/D2 to the outer diameter D2 is set to 1.0 or more. Ru.
【０００５】[0005]
本考案の１実施例が図１に示されている。 羽根車６の中心10からケーシング１の頂壁1aまでの距離ｄと羽根車６の外径Ｄ 2 との比ｄ／Ｄ2 が1.0 以上とされている。 ｄ／Ｄ2 の送風機特性に対する影響についての実験結果が図２に示されている 。 図の横軸は流量Ｑを羽根断面積を用いて無次元化した流量係数Φとされ、縦軸 は送風機全圧を無次元化した全圧係数ΨT 及びユニット騒音を用いて整理した比 騒音ＫP ＡT とされている。 図２に示されるように、ｄ／Ｄ2 ≧1.0 では空力特性( Φ−ΨT 特性）は殆ど 変化せず、比騒音特性（Φ−ＫP ＡT 特性）も同様に急激な変化はない。しかし 、ｄ／Ｄ2 ＝0.9 となると、空力特性の低下が始まり、比騒音特性も急激に悪化 する。特にｄ／Ｄ2 ＝0.7 では殆ど全圧が取れない状態となる。 ｄ／Ｄ2 ＝1.0 のときのケーシング１内部のフローパターンが図１に示され、 貫流送風機に特有の再循環渦Ｃはスタビライザ14の近くに位置し、かつ、略円形 状をなし、これが占める領域も小さい。One embodiment of the invention is shown in FIG. The ratio d/D2 between the distance d from the center 10 of the impeller 6 to the top wall 1a of the casing 1 and the outer diameter D2 of the impeller 6 is set to be 1.0 or more. Experimental results on the influence of d/D2 on blower characteristics are shown in FIG. The horizontal axis of the figure is the flow coefficient Φ, which is the flow rate Q made dimensionless using the blade cross-sectional area, and the vertical axis is the total pressure coefficient Ψ T , which is the dimensionless blower total pressure, and the specific noise, which is organized using the unit noise. It is said to be K P A T. As shown in FIG. 2, when d/D2 ≧1.0, the aerodynamic characteristics (Φ-Ψ T characteristics) hardly change, and the specific noise characteristics (Φ-K P AT characteristics) also do not change rapidly. However, when d/D2 =0.9, the aerodynamic characteristics begin to deteriorate and the specific noise characteristics also deteriorate rapidly. Particularly, when d/D2 = 0.7, it becomes almost impossible to maintain the total pressure. The flow pattern inside the casing 1 when d/D2 = 1.0 is shown in Fig. 1, and the recirculating vortex C, which is characteristic of a once-through fan, is located near the stabilizer 14 and has a substantially circular shape, and the area occupied by this It's also small.
【０００６】 一方、ｄ／Ｄ2 ＝0.9 のときのケーシング１内部のフローパターンが図４に示 され、再循環渦Ｃはスタビライザ14から吸込口３側に移動し、吸込み領域も図１ に示すそれに比し狭くなる。このため、空力特性が低下し、同一仕事量における 吸込み領域が狭くなることによって羽根車６のブレード１枚当りの負荷が大きく なって騒音が悪化する。 以上から明らかなように、ｄ／Ｄ2 ≧1.0 に設定すれば、送風機特性の悪化が 殆どなく、最小寸法で低騒音の貫流送風機を得ることができる。[0006] On the other hand, the flow pattern inside casing 1 when d/D2 = 0.9 is shown in Figure 4. , the recirculating vortex C moves from the stabilizer 14 to the suction port 3 side, and the suction area is also It is narrower than that shown in . For this reason, aerodynamic characteristics deteriorate and the As the suction area becomes narrower, the load per blade of the impeller 6 increases. The noise gets worse. As is clear from the above, if d/D2 is set to 1.0, the blower characteristics will deteriorate. It is possible to obtain a low-noise cross-flow fan with minimal dimensions.
【０００７】[0007]
本考案においては、羽根車の中心からケーシングの前壁までの距離ｄと上記羽 根車の外径Ｄ2 との比ｄ／Ｄ2 を1.0 以上に設定したため、貫流送風機の空力特 性を向上しうるとともにその騒音を低減できる。 In the present invention, the distance d from the center of the impeller to the front wall of the casing and the Since the ratio d/D2 to the outer diameter D2 of the root wheel was set to 1.0 or more, the aerodynamic characteristics of the once-through blower It is possible to improve the performance and reduce the noise.
【図１】本考案の１実施例を示す略示的断面図である。FIG. 1 is a schematic cross-sectional view showing one embodiment of the present invention.
【図２】ｄ／Ｄ2 の送風機特性に対する影響を示す線図
である。FIG. 2 is a diagram showing the influence of d/D2 on blower characteristics.
【図３】空気調和機の室内ユニットの略示的断面図であ
る。FIG. 3 is a schematic cross-sectional view of an indoor unit of the air conditioner.
【図４】従来の貫流送風機の略示的断面図である。FIG. 4 is a schematic cross-sectional view of a conventional once-through blower.
１ ケーシング ３ 吸込口 ７ 吹出口 ６ 羽根車 1a 前壁 1 Casing 3 Suction port 7 Air outlet 6 Impeller 1a front wall
Claims (1)
ら前方下部に形成された吹出口に至るほぼ逆Ｌ形の気体
流路の折曲部に羽根車を設置してなる貫流送風機におい
て、上記羽根車の中心から上記ケーシングの前壁までの
距離ｄと上記羽根車の外径Ｄ2 との比ｄ／Ｄ2 を1.0 以
上に設定したことを特徴とする貫流送風機。[Claim 1] A once-through blower comprising an impeller installed at a bent part of a substantially inverted L-shaped gas flow path extending from a suction port formed in the upper part of the casing to an outlet formed in the front lower part, A cross-flow blower characterized in that a ratio d/D2 between a distance d from the center of the impeller to the front wall of the casing and an outer diameter D2 of the impeller is set to 1.0 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991038181U JP2549877Y2 (en) | 1991-04-26 | 1991-04-26 | Once-through blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991038181U JP2549877Y2 (en) | 1991-04-26 | 1991-04-26 | Once-through blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04123392U true JPH04123392U (en) | 1992-11-09 |
| JP2549877Y2 JP2549877Y2 (en) | 1997-10-08 |
Family
ID=31919770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991038181U Expired - Lifetime JP2549877Y2 (en) | 1991-04-26 | 1991-04-26 | Once-through blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2549877Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52115408A (en) * | 1976-03-19 | 1977-09-28 | Int Standard Electric Corp | Tangential fans |
| JPH01170792A (en) * | 1987-12-26 | 1989-07-05 | Nippon Denso Co Ltd | Cross flow fan device |
| JPH02294596A (en) * | 1989-05-08 | 1990-12-05 | Sharp Corp | Cross flow type blower |
-
1991
- 1991-04-26 JP JP1991038181U patent/JP2549877Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52115408A (en) * | 1976-03-19 | 1977-09-28 | Int Standard Electric Corp | Tangential fans |
| JPH01170792A (en) * | 1987-12-26 | 1989-07-05 | Nippon Denso Co Ltd | Cross flow fan device |
| JPH02294596A (en) * | 1989-05-08 | 1990-12-05 | Sharp Corp | Cross flow type blower |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2549877Y2 (en) | 1997-10-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19970513 |
|
| EXPY | Cancellation because of completion of term |