JPH0760009B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH0760009B2 JPH0760009B2 JP63072481A JP7248188A JPH0760009B2 JP H0760009 B2 JPH0760009 B2 JP H0760009B2 JP 63072481 A JP63072481 A JP 63072481A JP 7248188 A JP7248188 A JP 7248188A JP H0760009 B2 JPH0760009 B2 JP H0760009B2
- Authority
- JP
- Japan
- Prior art keywords
- rib
- air
- ribs
- fan
- rear plate
- 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 - Fee Related
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
- Air-Flow Control Members (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、空気調和機に関するものである。TECHNICAL FIELD The present invention relates to an air conditioner.
従来の技術 従来、クロスフローファンを有する空気調和機において
は、サージングを防止するためにさまざまな工夫がなさ
れて来た。2. Description of the Related Art Conventionally, in an air conditioner having a cross flow fan, various measures have been taken to prevent surging.
以下図面を参照しながら、上述した従来の空気調和機の
一例について説明する。An example of the above-described conventional air conditioner will be described below with reference to the drawings.
第４図は従来のクロスフローファンを有する空気調和機
の通風回路の構造を示す。同図に示すように、吸込側に
は吸込グリス５、熱交換器６等を有し、クロスフローフ
ァン１、ケーシング前板２、ケーシング後板３等により
通風回路を構成している。また、クロスフローファン１
は適数個のファンブロック10を連接して長尺ファンロー
タを形成している。FIG. 4 shows the structure of a ventilation circuit of an air conditioner having a conventional cross flow fan. As shown in the figure, the suction side has a suction grease 5, a heat exchanger 6, and the like, and a crossflow fan 1, a casing front plate 2, a casing rear plate 3, and the like form a ventilation circuit. Also, cross flow fan 1
Connects a suitable number of fan blocks 10 to form a long fan rotor.
発明が解決しようとする課題 しかしながら上記第５図の構成では、クロスフローファ
ン１のファンローターが長いため、ファン空気吸入口の
上流側に配置されている種々の機器（たとえば熱交換器
６等）あるいは空気流通路のケーシング（たとえばケー
シング前板２、ケーシング後板３等）の形状等によって
ファン吸込側の空気抵抗分布がクロスフローファン１の
全長にそって不均一となり、クロスフローファン１の回
転時には吸入空気抵抗の大きい部分からの風量が該抵抗
の小さい部分からの風量より少く、更に最初小規模の風
量の不均衡が発生すると以後は大風量からの風が小風量
の部分からの風を誘引してその風量差は益々拡大するよ
うになる。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the configuration shown in FIG. 5, since the fan rotor of the cross flow fan 1 is long, various devices (for example, the heat exchanger 6) arranged upstream of the fan air intake port. Alternatively, due to the shape of the casing of the air flow passage (for example, the casing front plate 2, the casing rear plate 3, etc.), the air resistance distribution on the fan suction side becomes uneven along the entire length of the cross flow fan 1, and the rotation of the cross flow fan 1 Sometimes the air volume from the part with a large intake air resistance is smaller than the air volume from the part with a small resistance, and when a small-scale air volume imbalance occurs at first, the air from the large air volume will change the air from the small air volume portion thereafter. By attracting the air, the difference in air flow will become wider.
ところで上述の経過によってある特定部分の風量が第６
図の特性曲線上のＰ点以下になると該部分はいわゆる不
安定領域で運転されることとなりサージング現象が発生
してクロスフローファン全体が振動および騒音を発する
ことが実験的に知られている。By the way, the air volume of a certain part is
It is empirically known that when the temperature becomes equal to or lower than the point P on the characteristic curve in the figure, the portion is operated in a so-called unstable region, a surging phenomenon occurs, and the entire crossflow fan emits vibration and noise.
ここでいう「不安定領域」とは第７図の特性曲線上のＰ
点より左側の部分のように風量の減少につれて静圧が減
少する領域をいうものである。The "unstable region" referred to here is P on the characteristic curve of FIG.
It is a region where the static pressure decreases as the air volume decreases, such as the part on the left side of the point.
ここでは風量が減少すれば静圧が減少しファンには風量
が減少する方向に力が働くので風量の変動を助長する方
向に力が働く。従ってこの領域では一旦風量の変動が起
ると安定しない。また第６図の「安定領域」とは特性曲
線上のＰ点より右側の部分のように、風量が増大すれば
静圧が減少し、風量が減少すれば静圧が増大する領域を
いい、ファンは負荷の状態により任意の静圧、風量を有
する一点において負荷とバランスして安定運転を行うも
のである。Here, if the air volume decreases, the static pressure decreases, and the force acts on the fan in the direction in which the air volume decreases. Therefore, the force acts in the direction that promotes the fluctuation of the air volume. Therefore, once the air volume fluctuates in this region, it is not stable. Further, the “stable region” in FIG. 6 is a region on the right side of the point P on the characteristic curve, where the static pressure decreases as the air volume increases, and the static pressure increases as the air volume decreases, The fan balances the load at a single point having an arbitrary static pressure and air volume depending on the load state to perform stable operation.
本発明は上記課題に鑑み、空気調和機のサージングを防
止することを目的とするものである。The present invention has been made in view of the above problems, and an object thereof is to prevent surging of an air conditioner.
課題を解決するための手段 上記課題を解決するために本発明は、クロスフローファ
ン、ケーシング前板、ケーシング後板とから通風回路を
構成し、前記ケーシング後板の吹出側の全域に高さ、
巾、取付ピッチが均一なリブを形成しかつ、前記リブの
うち一部分については取付ピッチを前記リブよりも小さ
く形成したものである。Means for Solving the Problems In order to solve the above problems, the present invention configures a ventilation circuit from a crossflow fan, a casing front plate, and a casing rear plate, and a height over the entire blowing side of the casing rear plate,
A rib having a uniform width and a uniform mounting pitch is formed, and a mounting pitch of a part of the rib is smaller than that of the rib.
また本発明は、クロスフローファン、ケーシング前板、
ケーシング後板とから通風回路を構成し、前記ケーシン
グ後板の吹出側の両端部のみに高さ、巾、取付ピッチが
均一なリブを形成しかつ、前記リブのうち一部分につい
てはリブ高さを前記リブよりも高く形成したものであ
る。The present invention also includes a cross flow fan, a casing front plate,
A ventilation circuit is formed from the casing rear plate, and ribs having a uniform height, width, and mounting pitch are formed only at both ends on the outlet side of the casing rear plate, and a rib height is formed for a part of the ribs. It is formed higher than the rib.
さらに本発明は、クロスフローファン、ケーシング前
板、ケーシング後板とから通風回路を構成し、前記ケー
シング後板の吹出側の両端部のみに高さ、巾、取付ピッ
チが均一なリブを形成しかつ前記リブのうち一部分につ
いては前記リブよりもリブ高さを高く、取付ピッチを小
さく形成したものである。Further, according to the present invention, a ventilation circuit is constituted by a cross flow fan, a casing front plate, and a casing rear plate, and ribs having a uniform height, width, and mounting pitch are formed only at both ends of the casing rear plate on the outlet side. In addition, a part of the ribs has a height higher than that of the ribs and a mounting pitch smaller than that of the ribs.
作用 本発明は上記した構成により、仮にクロスフローファン
の吸込口の上流側に吸込抵抗の不均一分布が存在して
も、長尺ファンロータの軸方向に偏流が発生することが
ない。Effect According to the present invention, even if there is a non-uniform distribution of suction resistance on the upstream side of the suction port of the cross flow fan, uneven flow does not occur in the axial direction of the long fan rotor.
実施例 以下、本発明の一実施例を添付図面の第１図から第３図
を参考に説明する。Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3 of the accompanying drawings.
第１図はセパレート型空気調和機の室内機の内部断面図
である。FIG. 1 is an internal cross-sectional view of an indoor unit of a separate type air conditioner.
同図で示すように、吸込側には吸込グリル５、熱交換器
６等があり、クロスフローファン１、ケーシング前板
２、ケーシング後板３により通風回路を構成している。
ケーシング後板３の吹出側内面には本発明のリブ４が形
成されている。また吹出側には、上下偏向羽根７、左右
偏向羽根８が取付けられている。As shown in the figure, there are a suction grill 5, a heat exchanger 6, etc. on the suction side, and the crossflow fan 1, the casing front plate 2 and the casing rear plate 3 form a ventilation circuit.
The rib 4 of the present invention is formed on the blow-out side inner surface of the casing rear plate 3. Further, a vertical deflection blade 7 and a horizontal deflection blade 8 are attached to the outlet side.
第２図は第１図の吹出口部分の拡大斜視図である。同図
に示すようにリブ４がケーシング後板３の吹出側内面の
全域に形成されている。FIG. 2 is an enlarged perspective view of the air outlet portion of FIG. As shown in the drawing, ribs 4 are formed on the entire inner surface of the casing rear plate 3 on the outlet side.
第３図は第２図のＡ−Ａ断面の拡大図である。同図に示
すように、リブ４はケーシング後板３の内面より高さ
h1、巾ｔ、長さｌの大きさであり、リブとリブは等ピッ
チ間隔p1で一体成形されている。また領域Ｙについて
は、リブの巾、長さは領域Ｘと同一であり、ピッチ間隔
p2、リブ高さh2で一体成形されている。（p1＞p2，h1＜
h2） この構成によれば、リブ４がない場合クロスフローファ
ン１の吸入側の通風抵抗がフィルターの目づまり等によ
り増大した場合クロスフローファン１の中央部から吸込
空気抵抗の小さい両端部に向って偏流Ｗ（矢印で示す）
が発生しようとし、ひいては前述したサージング現象を
発生するのに対し、空気抵抗の小さい区域（両端部）に
対応してその下流となる位置領域Ｙに領域Ｘよりもリブ
高さの高いリブ４′を取付けかつ取付ピッチ間隔を小さ
くしているため空気吹出通路９の通風面積を狭め絞るこ
とになり、吸込空気抵抗の大きい方から小さい方への偏
流Ｗの発生を防ぎ、その結果サージング現象の発生を防
止できる。FIG. 3 is an enlarged view of the AA cross section of FIG. As shown in the figure, the rib 4 is higher than the inner surface of the casing rear plate 3.
The size is h 1 , width t, and length l, and the ribs are integrally formed at equal pitch intervals p 1 . Further, in the region Y, the width and length of the rib are the same as those in the region X, and the pitch interval is
It is integrally molded with p 2 and rib height h 2 . (P 1 > p 2 , h 1 <
h 2 ) According to this configuration, when the rib 4 is not provided and the ventilation resistance on the suction side of the crossflow fan 1 increases due to the clogging of the filter, etc., from the central portion of the crossflow fan 1 to both ends where the suction air resistance is small. Unbalanced flow W (indicated by arrow)
In contrast to the surging phenomenon described above, the rib 4'having a higher rib height than the region X is provided in the position region Y downstream of the region (both ends) having a small air resistance. Since the installation is performed and the installation pitch interval is made small, the ventilation area of the air outlet passage 9 is narrowed and narrowed, and the occurrence of the drift W from the one having a large suction air resistance to the one having a small suction air resistance is caused, resulting in the occurrence of the surging phenomenon. Can be prevented.
また、従来サージングが生じた場合、対策として角形の
ポリエチ等を貼りつけていたのに対し、リブ４はケーシ
ング後板３と一体成形であるためコストならびにポリエ
チを貼る工数を下げることができる。さらにリブ４の巾
ｔを広く取り面とした場合成形時ひけを生じるが、リブ
４の巾ｔをひけの生じない最大寸法におさえているた
め、その心配もない。Further, when surging occurs in the related art, a square polyethylene or the like is attached as a countermeasure, whereas the rib 4 is integrally formed with the casing rear plate 3, so that the cost and the number of steps for attaching the polyethylene can be reduced. Further, when the width t of the rib 4 is wide, the sink mark is generated at the time of molding. However, since the width t of the rib 4 is set to the maximum dimension that does not cause the sink mark, there is no fear of that.
なお本実施例においては、リブ高さ及び取付ピッチをと
もに変えた構成で説明したが、いずれか一方であっても
同様の効果を奏するものである。In the present embodiment, the rib height and the mounting pitch are both changed, but any one of them has the same effect.
発明の効果 以上のように、本発明の空気調和機は、ファンの軸流方
向の偏流を防ぎ、その結果サージング現象の発生を防止
し、騒音や振動のない静かで且つ安定した空気調和機の
運転を可能とする。Effects of the Invention As described above, the air conditioner of the present invention prevents uneven flow in the axial direction of the fan, thereby preventing the occurrence of the surging phenomenon, and of a quiet and stable air conditioner without noise or vibration. Enables driving.
第１図は本発明の一実施例におけるセパレート型空気調
和機の室内ユニットの内部断面図、第２図は同室内ユニ
ットの吹出口部分の拡大斜視図、第３図は同吹出口部分
のＡ−Ａ線断面図及びＢ−Ｂ線断面図、第４図は従来の
室内ユニットの内部断面図、第５図はクロスフローファ
ンの平面図、第６図はクロスフローファンの特性図であ
る。 １……クロスフローファン、２……ケーシング前板、３
……ケーシング後板、４……リブ、５……熱交換器。FIG. 1 is an internal cross-sectional view of an indoor unit of a separate type air conditioner according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view of an air outlet of the indoor unit, and FIG. 3 is an A of the air outlet. -A line sectional view and BB sectional view, FIG. 4 is an internal sectional view of a conventional indoor unit, FIG. 5 is a plan view of a crossflow fan, and FIG. 6 is a characteristic diagram of the crossflow fan. 1 ... Cross flow fan, 2 ... Casing front plate, 3
...... Casing back plate, 4 ... ribs, 5 ... heat exchanger.
Claims (1)
ーシング後板とから通風回路を構成し、前記ケーシング
後板の吹出側の全域に巾が均一なリブを形成するととも
に、前記リブのうち両端部におけるリブの高さを中央部
におけるリブの高さと比較して高くし、かつ前記両端部
におけるリブの取付ピッチを前記中央部におけるリブの
取付ピッチと比較して小さく形成した空気調和機。1. A cross-flow fan, a casing front plate, and a casing rear plate constitute a ventilation circuit, and a rib having a uniform width is formed on the entire blow-out side of the casing rear plate, and both end portions of the rib are formed. The air conditioner is formed such that the height of the ribs is higher than the height of the ribs in the central portion, and the mounting pitch of the ribs at both ends is smaller than the mounting pitch of the ribs in the central portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63072481A JPH0760009B2 (en) | 1988-03-25 | 1988-03-25 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63072481A JPH0760009B2 (en) | 1988-03-25 | 1988-03-25 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01244239A JPH01244239A (en) | 1989-09-28 |
| JPH0760009B2 true JPH0760009B2 (en) | 1995-06-28 |
Family
ID=13490554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63072481A Expired - Fee Related JPH0760009B2 (en) | 1988-03-25 | 1988-03-25 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0760009B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095971A (en) * | 2006-10-05 | 2008-04-24 | Daikin Ind Ltd | Indoor unit of air conditioner |
-
1988
- 1988-03-25 JP JP63072481A patent/JPH0760009B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01244239A (en) | 1989-09-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |