JP2000220865A - Outdoor machine front grill of air-conditioner and its manufacture - Google Patents
Outdoor machine front grill of air-conditioner and its manufactureInfo
- Publication number
- JP2000220865A JP2000220865A JP11019496A JP1949699A JP2000220865A JP 2000220865 A JP2000220865 A JP 2000220865A JP 11019496 A JP11019496 A JP 11019496A JP 1949699 A JP1949699 A JP 1949699A JP 2000220865 A JP2000220865 A JP 2000220865A
- Authority
- JP
- Japan
- Prior art keywords
- front grill
- magnesium alloy
- grill
- air
- impeller
- 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.)
- Pending
Links
Landscapes
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
Description
【産業上の利用分野】本発明は、リサイクル性と低騒音
性を有する空気調和機の室外機前面グリルとその製造方
法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor unit front grill of an air conditioner having recyclability and low noise, and a method of manufacturing the same.
【従来の技術】昭和４０年代から、一般的に、羽根車か
ら吹き出し口を通じて外側へ空気を吐出する送風装置の
吹き出し口の後流側に配されるグリルは円形の断面形状
を有する鋼線をさまざまなデザインに配列して構成され
てきた。しかし、近年羽根車の高性能化とともに室外機
の低騒音化が叫ばれるようになり、ほとんどの室外機で
はプラスチックの前面グリルを使用するようになった。2. Description of the Related Art Since the 1970s, generally, a grill disposed on the downstream side of an air outlet of an air blower that discharges air from an impeller to the outside through the air outlet is a steel wire having a circular cross-sectional shape. It has been arranged in various designs. However, in recent years, the performance of the impeller has been enhanced and the noise of the outdoor unit has been reduced, and most outdoor units have used a plastic front grill.
【発明が解決しようとする課題】しかしながら、家電製
品のリサイクル化が望まれる中では、プラスチック製部
品よりも金属製部品のほうが再資源化が容易であり、適
した材料と認知されている。しかし、金属からプラスチ
ックになり、高性能化された前面グリルをリサイクルし
易くするために従来に戻すことはできない。また、空気
調和機の室外機はＰＬ法対応として放火への対策を講じ
る目的で難燃化も要望されていた。そこで本発明は、こ
のような問題点を鑑みてなされたものであり、室外機の
前面グリルをチクソモールディング法によりマグネシウ
ム合金で製造することにより、プラスチックと同等以上
の性能を有するものが金属材で提供でき、将来的なマテ
リアルリサイクルを容易にすることを目的としている。However, while it is desired to recycle home electric appliances, metal parts are easier to recycle than plastic parts and are recognized as suitable materials. However, the front grill, which is made of metal and made of plastic and has high performance, cannot be returned to the conventional one in order to facilitate recycling. In addition, it has been demanded that the outdoor unit of the air conditioner be made flame retardant in order to take measures against arson in compliance with the PL method. Therefore, the present invention has been made in view of such problems, and by manufacturing a front grill of an outdoor unit with a magnesium alloy by a thixomolding method, a metal material having performance equal to or higher than that of plastic is made of a metal material. It can be provided and facilitates future material recycling.
【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、羽根車から吹き出し口を通じて外側へ空気
を吐出する送風装置において、材質がマグネシウム合金
である空気調和機の室外機前面グリルである。上記構成
によって、製品が廃棄された時に室外機前面グリルのマ
テリアルリサイクルを容易にすることができる。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a blower for discharging air to the outside from an impeller through a blow-out port. It is. According to the above configuration, material recycling of the outdoor unit front grill can be facilitated when the product is discarded.
【発明の実施の形態】上記課題を解決するための請求項
１記載の発明は、材質がマグネシウム合金である空気調
和機の室外機前面グリルである。これによって、製品が
廃棄された時に室外機前面グリルのマテリアルリサイク
ルを容易にすることができる。また、請求項２に記載の
発明は、羽根車軸方向の断面形状が翼形形状で水平桟列
群で構成され、材質がマグネシウム合金である空気調和
機の室外機前面グリルである。材質をマグネシウムにす
ることによって剛性が格段に向上する。したがって、前
面グリルを水平桟列だけで構成することができ、送風抵
抗の低減に効果が発揮できる。また、剛性が上がるので
従来の樹脂翼形形状よりも相似で縮小化することによっ
てある程度軽量化も達成できる。また、請求項３に記載
の発明は、マグネシウム合金がアルミニウム8.5〜9.5重
量％、亜鉛0.45〜0.9重量％、マンガン0. 15〜0.2重量
％を含み、残余がマグネシウムからなる合金である空気
調和機の室外機前面グリルである。このような組成を選
択することによって５８０℃付近に加熱すると固相を１
５重量％程度含んだ半溶融体を得ることができ、スクリ
ュー射出成形機で成形することで寸法精度に優れたもの
が得られる。また、請求項４に記載の発明は、マグネシ
ウム合金を固相線温度以上であって液相線温度以下の温
度に加熱した状態で、断面形状が翼形形状で水平桟列群
で構成された成形品を得る空気調和機の室外機前面グリ
ルの製造方法である。これによって、剛性に優れたマグ
ネシウムの成形品が寸法精度に優れ、高性能な前面グリ
ルが量産性よく製造できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 for solving the above problem is an outdoor unit front grill of an air conditioner whose material is a magnesium alloy. This facilitates material recycling of the outdoor unit front grill when the product is discarded. The invention according to claim 2 is an outdoor unit front grill of an air conditioner in which the cross-sectional shape in the impeller axis direction is a wing-shaped cross-sectional group, and the material is a magnesium alloy. By using magnesium as the material, the rigidity is significantly improved. Therefore, the front grille can be composed of only the horizontal rows, and the effect of reducing the blowing resistance can be exerted. Further, since the rigidity is increased, the weight can be reduced to some extent by reducing the size to be similar to the conventional resin airfoil shape. The invention according to claim 3 is an air conditioner wherein the magnesium alloy is an alloy containing 8.5 to 9.5% by weight of aluminum, 0.45 to 0.9% by weight of zinc, 0.15 to 0.2% by weight of manganese, and the balance being magnesium. Is the outdoor unit front grille. By selecting such a composition, heating to around 580 ° C. causes
A semi-molten product containing about 5% by weight can be obtained, and a product having excellent dimensional accuracy can be obtained by molding with a screw injection molding machine. In the invention according to claim 4, the magnesium alloy is heated to a temperature equal to or higher than the solidus temperature and equal to or lower than the liquidus temperature. This is a method for manufacturing an outdoor unit front grill of an air conditioner for obtaining a molded product. As a result, a magnesium molded article having excellent rigidity is excellent in dimensional accuracy, and a high-performance front grill can be manufactured with good mass productivity.
【実施例】以下、本発明の一実施例について図面を参考
に詳細な説明を行う。 （実施例１）図１は空気調和機の室外機前面グリルの正
面図、図２は断面図を示しており、熱交換器１と外装板
２で囲まれた空間に羽根車３とモータ４が収納されてお
り、羽根車３の周囲にオリフィス５が設けられている。
羽根車３の下流側に面する外装板２には吹き出し口６が
設けられ、その外側にはグリル７が取り付けられてい
る。グリル７の水平桟８は断面形状が翼形形状で構成さ
れる。水平桟モータ４はモータ支持台９によって外装板
２に固定されている。このような構造において外部空気
はモータ４に直結された羽根車３の回転により、熱交換
器１の側から空気を吸い込み、吹き出し口６を通してグ
リル７から外部へ吐出される。また図３は断面形状が翼
形形状で構成される水平桟の一部拡大断面図である。Ｌ
は翼形形状を有する水平桟の翼弦長、Ｔは水平桟間のピ
ッチ、Ｄは水平桟の最大キャンバ、Ｃは水平桟の前縁か
ら最大キャンバまでの距離、Ｗは流れ方向を示す。前面
グリルとして優れた性能を得るためには流れ方向に対し
て０．３≦Ｃ／Ｌ≦０．７の翼形形状とすることが好ま
しい。また、水平桟間のピッチＴはＪＩＳ Ｃ９６１２
記載のフィンガー試験をもとに水平桟の最大キャンバＤ
とマグネシウム合金の剛性を考慮して設計される。マグ
ネシウム系合金（９０Ｍｇ−９Ａｌ−１Ｚｎ）はチップ
（長軸が５〜６ｍｍ程度の米粒状）を使用してチクソモ
ールディング法により、外寸４５０×５００ｍｍの室外
機前面グリル（重量 ４２０ｇ）に成形された。チクソ
モールディング法とはシリンダー内でチップを凝固点〜
融点の温度まで加熱し、液相と固相が共存した半溶融状
態にして金型に射出注入する成形方法である。実施例で
は５５０〜５８０℃まで加熱した。使用したマグネシウ
ム系合金は比重が１．８２程度である。 （比較例１）難燃性ポリプロピレンを使用して外寸４５
０×５００ｍｍの室外機前面グリル（重量 ５００ｇ）
を成形した。実施例１と比較例１を比べると比較例１で
はＪＩＳ Ｃ９６１２記載のフィンガー試験で指が入ら
ないようにするため水平桟群を支持桟群で補強する構成
となっていた。また比較例では先端が所定の形状をした
太さΦ１２の試験フィンガーに対して安全性を確保する
ために水平桟と水平桟との隙間を９ｍｍにしていたが、
実施例で剛性が向上できたので隙間を１０ｍｍにするこ
とができ、それによっても開口率を向上させることがで
き、送風性能も向上する。また、実施例１では前面グリ
ルをマゲネシウム合金とすることによってはるかに大き
な剛性を得ることができ、支持桟群は必要ではなく、水
平桟群だけで構成することが可能であり、前面グリルを
薄肉化することで軽量化も図れた。さらに、比較例１の
プラスチックには環境負荷の大きなハロゲン系難燃剤が
使用されており、リサイクルおよび環境影響を考慮する
と実施例のほうがはるかに適した部品といえる。マグネ
シウム合金の場合充分な耐食性を得るためには塗膜コー
トと必要になるが、その塗膜がリサイクル性に悪影響を
及ぼすことはなかった。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. (Embodiment 1) FIG. 1 is a front view of an outdoor unit front grill of an air conditioner, and FIG. 2 is a cross-sectional view. An impeller 3 and a motor 4 are provided in a space surrounded by a heat exchanger 1 and an exterior plate 2. And an orifice 5 is provided around the impeller 3.
A blow-out port 6 is provided on the exterior plate 2 facing the downstream side of the impeller 3, and a grill 7 is attached to the outside thereof. The horizontal bar 8 of the grill 7 has an airfoil cross section. The horizontal beam motor 4 is fixed to the outer panel 2 by a motor support 9. In such a structure, the external air sucks air from the heat exchanger 1 side by the rotation of the impeller 3 directly connected to the motor 4, and is discharged from the grill 7 to the outside through the outlet 6. FIG. 3 is a partially enlarged cross-sectional view of a horizontal crosspiece having a wing-shaped cross section. L
Is the chord length of the horizontal bar having an airfoil shape, T is the pitch between the horizontal bars, D is the maximum camber of the horizontal bar, C is the distance from the leading edge of the horizontal bar to the maximum camber, and W is the flow direction. In order to obtain excellent performance as the front grille, it is preferable to have an airfoil shape of 0.3 ≦ C / L ≦ 0.7 with respect to the flow direction. The pitch T between the horizontal bars is JIS C9612.
Maximum camber D of horizontal bar based on finger test described
It is designed in consideration of the rigidity of magnesium alloy. Magnesium-based alloy (90Mg-9Al-1Zn) is formed into an outdoor unit front grille (weight 420g) with an external size of 450 x 500mm by thixomolding using chips (rice grains having a major axis of about 5 to 6mm). Was. What is the thixomolding method?
This is a molding method in which the material is heated to the melting point temperature, and a semi-molten state in which a liquid phase and a solid phase coexist is injected into a mold. In the example, heating was performed to 550 to 580 ° C. The magnesium alloy used has a specific gravity of about 1.82. (Comparative Example 1) External dimensions of 45 using flame-retardant polypropylene
0x500mm outdoor unit front grille (weight 500g)
Was molded. Comparing Example 1 with Comparative Example 1, Comparative Example 1 had a configuration in which the horizontal bar group was reinforced with the support bar group in order to prevent fingers from entering in the finger test described in JIS C9612. In addition, in the comparative example, the gap between the horizontal bar and the horizontal bar was set to 9 mm in order to ensure safety for a test finger having a predetermined shape and a tip having a thickness of Φ12.
Since the rigidity was improved in the embodiment, the gap can be reduced to 10 mm, which can also improve the aperture ratio and improve the blowing performance. Further, in the first embodiment, much higher rigidity can be obtained by using a magnesium alloy for the front grill, and a support bar group is not required, and it can be constituted only by a horizontal bar group. By reducing the weight, it was possible to reduce the weight. Furthermore, a halogen-based flame retardant having a large environmental load is used for the plastic of Comparative Example 1, and it can be said that the Examples are much more suitable parts in consideration of recycling and environmental impact. In the case of a magnesium alloy, a coating film is required to obtain sufficient corrosion resistance, but the coating film did not adversely affect the recyclability.
【発明の効果】上記実施例から明らかなように、請求項
１記載の発明によれば、製品が廃棄された時に室外機前
面グリルのマテリアルリサイクルを容易にすることがで
きた。また、請求項２に記載の発明によれば、材質をマ
グネシウム合金にすることによって剛性が格段に向上す
る。したがって、前面グリルを水平桟列だけで構成する
ことができ、送風抵抗の低減に効果が発揮できる。ま
た、剛性が上がるので従来の樹脂翼形形状よりも相似で
縮小化することによってある程度軽量化も達成できた。
また、請求項３に記載の発明によれば、このような組成
を選択することによって５８０℃付近に加熱すると固相
を１５重量％程度含んだ半溶融体を得ることができ、ス
クリュー射出成形機で成形することで寸法精度に優れた
ものが得られた。また、請求項４に記載の発明によれ
ば、これによって、剛性に優れたマグネシウムの成形品
が寸法精度よく量産製造できた。As is apparent from the above embodiment, according to the first aspect of the present invention, when the product is discarded, material recycling of the outdoor unit front grille can be facilitated. According to the second aspect of the present invention, the rigidity is remarkably improved by using a magnesium alloy as the material. Therefore, the front grille can be composed of only the horizontal rows, and the effect of reducing the blowing resistance can be exerted. In addition, since the rigidity is increased, the weight can be reduced to some extent by reducing the size in a similar manner to the conventional resin airfoil shape.
According to the third aspect of the present invention, by selecting such a composition, a semi-solid containing about 15% by weight of a solid phase can be obtained by heating to about 580 ° C. By molding with, one having excellent dimensional accuracy was obtained. According to the fourth aspect of the present invention, a molded product of magnesium having excellent rigidity can be mass-produced with high dimensional accuracy.
【図１】本発明の実施例１の前面グリルの正面図FIG. 1 is a front view of a front grille according to a first embodiment of the present invention.
【図２】本発明の実施例１の前面グリルの断面図FIG. 2 is a sectional view of a front grille according to the first embodiment of the present invention.
【図３】本発明の実施例１の前面グリルの一部拡大断面
図FIG. 3 is a partially enlarged cross-sectional view of the front grille according to the first embodiment of the present invention.
【図４】本発明の比較例１の前面グリルの正面図FIG. 4 is a front view of a front grill of Comparative Example 1 of the present invention.
１ 熱交換器 ２ 外装板 ３ 羽根車 ４ モータ ５ オリフィス ６ 吹き出し口 ７ グリル ８ 水平桟 ９モータ支持台 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Outer plate 3 Impeller 4 Motor 5 Orifice 6 Outlet 7 Grill 8 Horizontal bar 9 Motor support
───────────────────────────────────────────────────── フロントページの続き (72)発明者 杉尾 孝 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 中角 英二 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 渡邊 雅洋 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Ｆターム(参考） 3L051 BJ10 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Takashi Sugio 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Masahiro Watanabe 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 3L051 BJ10
Claims (4)
気を吐出する送風装置において、材質がマグネシウム合
金であることを特徴とする空気調和機の室外機前面グリ
ル。1. A front grill for an outdoor unit of an air conditioner, wherein a material is a magnesium alloy in a blower that discharges air from an impeller to an outside through an outlet.
る水平桟列群で構成されることを特徴とする請求項１記
載の空気調和機の室外機前面グリル。2. The outdoor unit front grill of an air conditioner according to claim 1, wherein the cross section in the axial direction of the impeller comprises a group of horizontal rows having an airfoil shape.
9.5重量％、亜鉛0.45〜0.9重量％、マンガン0.15〜0.2
重量％を含み、残余がマグネシウムからなる合金である
ことを特徴とする請求項１または２いずれか一項記載の
空気調和機の室外機前面グリル。3. The magnesium alloy has an aluminum content of at least 8.5.
9.5 wt%, zinc 0.45-0.9 wt%, manganese 0.15-0.2
The outdoor unit front grill of an air conditioner according to any one of claims 1 to 2, wherein the alloy is composed of magnesium and the balance is magnesium.
って液相線温度以下の温度に加熱した状態において、成
形することを特徴とする請求項１〜３いずれか一項記載
の空気調和機の室外機前面グリルの製造方法。4. The air conditioner according to claim 1, wherein the magnesium alloy is formed while being heated to a temperature not lower than the solidus temperature and not higher than the liquidus temperature. Manufacturing method of outdoor unit front grill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11019496A JP2000220865A (en) | 1999-01-28 | 1999-01-28 | Outdoor machine front grill of air-conditioner and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11019496A JP2000220865A (en) | 1999-01-28 | 1999-01-28 | Outdoor machine front grill of air-conditioner and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000220865A true JP2000220865A (en) | 2000-08-08 |
Family
ID=12000993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11019496A Pending JP2000220865A (en) | 1999-01-28 | 1999-01-28 | Outdoor machine front grill of air-conditioner and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000220865A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003065593A (en) * | 2001-08-23 | 2003-03-05 | Mitsubishi Electric Corp | Air conditioner |
| JP2012145277A (en) * | 2011-01-12 | 2012-08-02 | Mitsubishi Electric Corp | Air conditioner indoor unit |
| JP2012242002A (en) * | 2011-05-20 | 2012-12-10 | Zojirushi Corp | Air conditioner and method of manufacturing the same |
-
1999
- 1999-01-28 JP JP11019496A patent/JP2000220865A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003065593A (en) * | 2001-08-23 | 2003-03-05 | Mitsubishi Electric Corp | Air conditioner |
| JP2012145277A (en) * | 2011-01-12 | 2012-08-02 | Mitsubishi Electric Corp | Air conditioner indoor unit |
| JP2012242002A (en) * | 2011-05-20 | 2012-12-10 | Zojirushi Corp | Air conditioner and method of manufacturing the same |
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