JPH02166323A - Airconditioning device - Google Patents

Airconditioning device

Info

Publication number
JPH02166323A
JPH02166323A JP63322917A JP32291788A JPH02166323A JP H02166323 A JPH02166323 A JP H02166323A JP 63322917 A JP63322917 A JP 63322917A JP 32291788 A JP32291788 A JP 32291788A JP H02166323 A JPH02166323 A JP H02166323A
Authority
JP
Japan
Prior art keywords
heat exchanger
impeller
air
side plate
noise
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
Application number
JP63322917A
Other languages
Japanese (ja)
Other versions
JPH0723778B2 (en
Inventor
Kanjiro Kinoshita
歓治郎 木下
Ritsuo Shigehiro
重廣 律男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP63322917A priority Critical patent/JPH0723778B2/en
Publication of JPH02166323A publication Critical patent/JPH02166323A/en
Publication of JPH0723778B2 publication Critical patent/JPH0723778B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To substantially improve air conditioning capacity, to reduce the generation of noise and a consumption power, and to prevent the generation of rasping noise by a method wherein the outer diameter of the side plate of an impeller or an outer plate is increased to a value higher than that of a blast blade. CONSTITUTION:An outer peripheral edge 4a of a main plate 4 is extended over the outer diameter of the blade of an impeller 7, and is bent toward the upper end side of a heat exchanger 13. Meanwhile, a side plate 5 is also extended in a similar manner described above and curved toward the lower end side of the heat exchanger 13. Thereby, a free jet boundary line of discharge air formed to the back of the main plate 4 and the side plate 5 of the impeller is prevented from extending across only the central part of the heat exchanger 13. As a result, velocity of flow distribution of air introduced to the heat exchanger 13 is improved, an air flow rate is increased resulting from a decrease in draft resistance, and heat exchange efficiency is also improved. Further, simultaneously, since a low blast amount suffices for operation of a device, the generation of noise is reduced, and a drive power can be also saved.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、遠心ファンよりなる送風機を備えて構成され
た空気調和装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an air conditioner equipped with a blower consisting of a centrifugal fan.

(従来技術) 一般に動翼(ブレード)を備えて構成される遠心ファン
系の送風機では、当該動翼の揚力を用いて送風機能を実
現するようになっているので空気等流体への運動エネル
ギーの伝達、変換効率が極めて高く、例えば空気調和機
用の送風機として従来から極めて多く使用されている。
(Prior art) Centrifugal fan-type blowers that are generally equipped with rotor blades use the lift of the rotor blades to achieve the ventilation function, which transfers kinetic energy to fluids such as air. It has extremely high transmission and conversion efficiency, and has been widely used as a blower for air conditioners, for example.

そして、空気調和装置の種類として最近では設置スペー
ス面の有利さや室内デザイン上の自由さなどの見地から
特に天井埋込みタイプの空気調和装置の採用が多くなっ
て来ており、このような天井埋込型の空気調和装置では
例えば特開昭62−194128号公報にも示されてい
るように各種の送風機の中でも、その風向変換機能の点
から一般に上述のような遠心ファン又はその一種である
斜流ファンが用いられるのが通常である。
Recently, ceiling-embedded type air conditioners have become increasingly popular due to their advantages in terms of installation space and freedom in indoor design. In this type of air conditioner, for example, as shown in Japanese Patent Application Laid-Open No. 62-194128, among various types of blowers, centrifugal fans such as those mentioned above or a mixed flow fan, which is a type of them, are generally used from the viewpoint of the air direction conversion function. A fan is usually used.

しかし、送風機の中でも該遠心ファンや斜流ファンなど
の場合には、通常の軸流ファンの場合と較べると相対的
に送風能力が低くなる欠点がある。
However, among the air blowers, centrifugal fans, mixed flow fans, and the like have a drawback that their air blowing capacity is relatively lower than that of normal axial fans.

奇談問題点を例えば第5図に示すように遠心ファンを備
えて構成された従来の空気調和装置の場合を例に取って
説明すると以下のようになる。
The problem will be explained below by taking as an example the case of a conventional air conditioner equipped with a centrifugal fan as shown in FIG.

図中、符号30は主板31及び側板32を備え、該主板
31及び側板32間に複数枚の送風羽根33.33・・
を放射状に配設して構成された羽根車35によって構成
された遠心ファンである。該遠心ファン30はファン駆
動用の電動機36によって所定の回転速度で水平面方向
に回転駆動されるようになっている。
In the figure, the reference numeral 30 includes a main plate 31 and a side plate 32, and between the main plate 31 and the side plate 32, a plurality of air blowing blades 33, 33...
This is a centrifugal fan composed of impellers 35 arranged radially. The centrifugal fan 30 is rotated in a horizontal direction at a predetermined rotational speed by a fan driving electric motor 36.

一方、符号37は該遠心ファン30を内部中央に収納し
、その羽根車35外周囲に熱交換器38を支持している
外部ケーシングであり、該外部ケーシング37の中央部
下面には空気吸い込み口39が、また他方下方側同外周
縁部には空気吹き出し口40が各々形成されている。
On the other hand, reference numeral 37 is an external casing that houses the centrifugal fan 30 in the center and supports a heat exchanger 38 around the outer periphery of the impeller 35. 39, and an air outlet 40 is formed at the outer peripheral edge of the lower side.

そして、上記電動機36により上記遠心ファン30が回
転せしめられると、上記羽根車35の作用によって上記
空気吸い込み口39で吸い込まれた空気が矢印で示すよ
うに流れて熱交換器38に供給され、該熱交換器38で
熱交換された後に空気吹き出し口40より室内に吹き出
される。
When the centrifugal fan 30 is rotated by the electric motor 36, the air sucked in at the air suction port 39 by the action of the impeller 35 flows as shown by the arrow and is supplied to the heat exchanger 38. After the heat is exchanged in the heat exchanger 38, the air is blown into the room from the air outlet 40.

(発明が解決しようとする課題) ところで、上記のような構成の天井埋込み型空気調和装
置において、その熱交換器38の高さH3(第5図参照
)は、与えられた上下方向のファンスペース内で羽根車
35の寸法が最適値となるように決定しているが、その
場合の当該熱交換器38の高さHlは必然的に上記羽根
車35の羽根33の高さH2よりも大となる。
(Problem to be Solved by the Invention) By the way, in the ceiling-embedded air conditioner configured as described above, the height H3 of the heat exchanger 38 (see Fig. 5) is equal to the given vertical fan space. In this case, the height Hl of the heat exchanger 38 is necessarily larger than the height H2 of the blades 33 of the impeller 35. becomes.

一方、このような遠心ファンでは上記羽根車35の径を
大きくして所要回転数を小さくするようにすれば低騒音
化が図られるが、そのようにすると上記熱交換器38と
羽根車35の外端とが極めて接近したものとなる。
On the other hand, in such a centrifugal fan, noise reduction can be achieved by increasing the diameter of the impeller 35 to reduce the required number of revolutions; The outer ends are extremely close to each other.

その結果、当該羽根車35の主板31と側板32の背後
に形成される吹き出し空気の自由噴流境界線FLが図示
のように熱交換器38の中心部を横切ることになり、熱
交換器38への風速(流速)分布が悪化してしまう問題
がある。この風速分布の悪化は、各送風羽根33.33
間(第6図)及び当該送風羽根33の上下両端間(第7
図)で共に生じる風速分布の悪化と組合わさって生じる
。そして、風速分布が悪化すると、結局通風抵抗も増大
し、熱交換器38の熱交換量が低下するので一定の熱交
換量を得ようとすると、更に送風量を増量せざるを得す
、消費電力、騒音の増大等の不都合を招く。
As a result, the free jet boundary line FL of the blown air formed behind the main plate 31 and side plate 32 of the impeller 35 crosses the center of the heat exchanger 38 as shown in the figure, and is directed to the heat exchanger 38. There is a problem that the wind speed (flow speed) distribution of the wind speed (flow speed) deteriorates. This deterioration of the wind speed distribution is due to the fact that each blower blade is 33.33
(Fig. 6) and between the upper and lower ends of the blower blade 33 (7th
This occurs in combination with the deterioration of the wind speed distribution that also occurs in Figure). If the wind speed distribution deteriorates, the ventilation resistance will eventually increase, and the heat exchange amount of the heat exchanger 38 will decrease, so if you try to obtain a constant heat exchange amount, you will have no choice but to further increase the air flow, and the consumption will increase. This causes inconveniences such as increased power and noise.

また、騒音の面で言うと、上記構成では、羽根車35の
送風羽根33の出口部から各送風羽根33.33間で上
記第6図に示すような特に大きな風速分布を生じ、該状
態で吹き出されるので、背後の抵抗体と干渉して大きな
離散周波数の耳障りな音(NZ、2NZ・・・)を生じ
易い。
In terms of noise, in the above configuration, a particularly large wind speed distribution as shown in FIG. Since it is blown out, it tends to interfere with the resistor behind it and produce harsh sounds (NZ, 2NZ, etc.) with large discrete frequencies.

(発明が解決しようとする課題) 本発明は、上記の問題を解決することを目的としてなさ
れたもので、例えば第1図〜第3図に示すように、主板
4及び側板5間に配設された複数枚の送風羽根6.6・
・よりなる羽根車7を有し回転軸9と直交又は略直交す
る方向に送風する遠心ファン8と該遠心ファン8の上記
羽根車7の外周囲に配設された空気調和用熱交換器13
とを備えてなる空気調和装置において、上記羽根車の側
板5又は主板4の外径を上記羽根車7の送風羽根6.6
・・の外径よりも大きく形成したことを特徴とするもの
である。
(Problems to be Solved by the Invention) The present invention has been made for the purpose of solving the above-mentioned problems. For example, as shown in FIGS. 1 to 3, a multiple air blowing blades6.6.
- A centrifugal fan 8 that has an impeller 7 and blows air in a direction perpendicular or substantially perpendicular to the rotating shaft 9, and an air conditioning heat exchanger 13 disposed around the outer periphery of the impeller 7 of the centrifugal fan 8.
In an air conditioner comprising: an outer diameter of the side plate 5 or the main plate 4 of the impeller 7, the outer diameter of the side plate 5 or the main plate 4 of the impeller 7 is
It is characterized by being formed larger than the outer diameter of...

(作 用) 上記本発明の空気調和装置の構成では、遠心ファン8を
構成する羽根車7の側板5又は主板4の外径が当該羽根
車7の送風羽根6.6・・の外径よりも大きく延設して
形成されているために、該延設部により空気流のコアン
ダー効果を実現することができるようになり、熱交換器
に供給される吹き出し空気流の流速分布を均一にするこ
とができる。
(Function) In the configuration of the air conditioner of the present invention, the outer diameter of the side plate 5 or main plate 4 of the impeller 7 constituting the centrifugal fan 8 is larger than the outer diameter of the blower blades 6,6, etc. of the impeller 7. Since the extension part is formed with a large extension, it is possible to realize the Coander effect of the air flow, and the flow velocity distribution of the blown air flow supplied to the heat exchanger is made uniform. be able to.

(発明の効果) 従って、本発明の空気調和装置によると、遠心ファン、
斜流ファン等を利用した空気調和装置の空気調和能力を
実質的に向上させることができるようになるとともに従
来のものに較べて低騒音かつ低消費電力のものとするこ
とができる。
(Effect of the invention) Therefore, according to the air conditioner of the present invention, the centrifugal fan,
The air conditioning ability of an air conditioner using a mixed flow fan or the like can be substantially improved, and the noise and power consumption can be lower than that of conventional devices.

また離散周波数成分の騒音の発生が抑制されることから
特に耳障りな音が生じなくなる。
Further, since the generation of noise of discrete frequency components is suppressed, particularly harsh sounds are not generated.

(実施例) 第1図〜第3図は、本発明の実施例に係る例えば天井埋
込型カセット式の空気調和装置を示している。
(Embodiment) FIGS. 1 to 3 show, for example, a ceiling-embedded cassette type air conditioner according to an embodiment of the present invention.

先ず第1図は、同天井埋込型空気調和装置カセット本体
10の全体的な構造を示しており、図中符号lは同空気
調和装置カセット本体10の天井埋込用外部ケーシング
である。
First, FIG. 1 shows the overall structure of the ceiling-embedded air conditioner cassette body 10, and reference numeral 1 in the figure indicates an external casing of the ceiling-embedded air conditioner cassette body 10.

該外部ケーシングl内の中央部下面には、上方側の主板
4と下方側の側板(シュラウド)5との間に放射状に入
口側を回転方向に曲げて形成した後方湾曲形の複数枚の
送風羽根6.6・・を配設して構成した羽根車7を備え
た遠心ファン8が、その駆動用電動機9を介して吊設さ
れている。該遠心ファン8は、上記主板4側中心部に上
記駆動用電動機9の回転軸9aとの連結用嵌合部4bを
有し、該嵌合部4bで上記電動機9の回転軸9aと嵌合
連結されている。この結果、上記電動機9が駆動される
と、上記遠心ファン8の羽根車7が水平面方向に回転し
、矢印(イ)方向に空気を吸い込んで上記送風羽根6.
6・・の部分に生じる揚力により矢印(ロ)で示す遠心
方向に送り出す。
On the central lower surface of the outer casing l, there are a plurality of backward curved air blowers formed by radially bending the inlet side in the rotational direction between the upper main plate 4 and the lower side plate (shroud) 5. A centrifugal fan 8 equipped with an impeller 7 configured by disposing blades 6, 6, . . . is suspended via an electric motor 9 for driving the fan. The centrifugal fan 8 has a fitting part 4b for connection with the rotating shaft 9a of the driving electric motor 9 at the center of the main plate 4 side, and is fitted with the rotating shaft 9a of the electric motor 9 at the fitting part 4b. connected. As a result, when the electric motor 9 is driven, the impeller 7 of the centrifugal fan 8 rotates in the horizontal plane direction, sucking air in the direction of arrow (A) and causing the blower blades 6.
The lift generated in the part 6... sends it out in the centrifugal direction shown by the arrow (b).

一方、上記外部ケーシング1は、上記空気の吸い込み部
に位置して所定大の開口11を有し、該開口2を空気吸
い込みグリルとして構成されている。また周外部ケーシ
ング1の外周側下縁部には空気吹き出し口12.12が
拡散方向に傾斜して設けられている。
On the other hand, the external casing 1 has an opening 11 of a predetermined size located at the air suction portion, and the opening 2 is configured as an air suction grill. Air outlet ports 12 and 12 are provided at the lower edge of the outer periphery of the outer casing 1 so as to be inclined in the diffusion direction.

さらに、符号13.13は上記遠心ファン8の外周囲に
配設され、上記外部ケーシング3の底壁i4上に支持さ
れた熱交換器であり、上記遠心ファン8により上記空気
吸い込み口より吸い込まれ、羽根車7から遠心力の作用
で放射方向に押し出される空気流は当該熱交換器13で
熱交換された後に上記吹き出し口12.12より矢印(
ハ)方向外方に吹き出されるようになっている。
Further, reference numeral 13.13 is a heat exchanger disposed around the outer periphery of the centrifugal fan 8 and supported on the bottom wall i4 of the outer casing 3. The airflow pushed out in the radial direction by the action of centrifugal force from the impeller 7 is heat exchanged in the heat exchanger 13, and then flows from the outlet 12.12 in the direction indicated by the arrow (
C) The air is blown out in the outward direction.

ところで、この場合、上記外部ケーシングlの上記ドー
ナツ状d底壁部14の上面14aは所定の角度で上方に
起立した係止縁15によって内側領域16aと外側領域
16bとに仕切られ、該外側領域16b内に所定のドレ
ン空間17を置いて上記熱交換器13が設置されている
。そして、該係止縁I5の延設端15aは上述した側板
5の外周側延長部5aに対応し、該延長部5aと連続し
た空気流通路18を上記熱交換器13の空気導入口方向
に形成するようになっている。
Incidentally, in this case, the upper surface 14a of the donut-shaped bottom wall portion 14 of the outer casing l is partitioned into an inner region 16a and an outer region 16b by a locking edge 15 that stands upward at a predetermined angle. The heat exchanger 13 is installed with a predetermined drain space 17 in the drain space 16b. The extending end 15a of the locking edge I5 corresponds to the outer peripheral extension 5a of the side plate 5 described above, and the air flow passage 18 continuous with the extension 5a is directed toward the air inlet of the heat exchanger 13. It is supposed to form.

従って、該実施例の構成の場合、上記主板4の外周縁4
aが羽根車7の羽根の外径よりも長く延長され、しかも
熱交換器13の上端側に曲成して形成されているととも
に他方その側板5も同様に延長されて熱交換器13の下
端側方向に曲成されている。
Therefore, in the case of the configuration of this embodiment, the outer peripheral edge 4 of the main plate 4
a is extended longer than the outer diameter of the blades of the impeller 7 and is curved toward the upper end of the heat exchanger 13, and the side plate 5 is also extended in the same way to form the lower end of the heat exchanger 13. curved laterally.

従って、上記上下各延長部によって遠心方向に押し出さ
れる空気流に対して十分なコアンダー効果を与えること
が可能になり、仮に図示の如く空気調和装置本体10の
外部ケーシング1内の熱交換器I3の高さH,に対して
羽根車7の送風羽根6の高さが小さくなるような場合に
おいても当該羽根車7から押し出された空気流を上記熱
交換器13の上端から下端までの全域に亘って均等に効
率よく送り込むことができるようになる。そして、上記
各送風羽根6,6間の流速分布(第2図)や当該送風羽
根6の上下両端間の流速分布(第3図)もそれぞれ均等
なものとなり、大きく改善される。
Therefore, it is possible to give a sufficient coander effect to the airflow pushed out in the centrifugal direction by the above-mentioned upper and lower extensions, and if the heat exchanger I3 in the outer casing 1 of the air conditioner main body 10 is Even when the height of the blower blade 6 of the impeller 7 is smaller than the height H, the air flow pushed out from the impeller 7 can be spread over the entire area from the upper end to the lower end of the heat exchanger 13. This allows the material to be fed evenly and efficiently. Then, the flow velocity distribution between the respective blower blades 6, 6 (FIG. 2) and the flow velocity distribution between the upper and lower ends of the blower blade 6 (FIG. 3) are also made equal, which is greatly improved.

このため従来のように羽根6の外径を大きくして該羽根
6自体を上記熱交換器13に近付けるような構成を取ら
なくてもよくなり、羽根車の主板4及び側板5の背後に
形成される吹き出し空気の自由噴流境界線FL(第5図
参照)が熱交換器13の中心部のみを横切るようなこと
もなくなる。その結果、熱交換器13へ導入される空気
の流速分布が良好となり、通風抵抗が減少して第4図に
示すように空気流量が増大し熱交換効率も向上する。
For this reason, it is no longer necessary to increase the outer diameter of the blades 6 and bring the blades 6 closer to the heat exchanger 13 as in the past, and the blades 6 are formed behind the main plate 4 and side plate 5 of the impeller. The free jet boundary line FL (see FIG. 5) of the blown air no longer crosses only the center of the heat exchanger 13. As a result, the flow velocity distribution of the air introduced into the heat exchanger 13 is improved, the ventilation resistance is reduced, the air flow rate is increased as shown in FIG. 4, and the heat exchange efficiency is also improved.

また、その結果、同時に送風量も小さくて済むことにな
るので騒音も低下し、駆動電力も節約することができる
ことになる。
Furthermore, as a result, the amount of air blown can also be reduced, reducing noise and saving driving power.

なお、上述の実施例では遠心ファンの場合を例にとって
説明したが、上記の効果は斜流ファンやシロッコファン
等の場合であっても全く同様に実現することができるも
のであることは言うまでもない。要するに遠心ファンの
範囲に含まれるものは、全てのものにおいて同様の効果
を得ることができるものである。
Although the above embodiment has been explained using a centrifugal fan as an example, it goes without saying that the above effects can be achieved in exactly the same way even in the case of a mixed flow fan, a sirocco fan, etc. . In short, all types of centrifugal fans can achieve similar effects.

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

第1図は、本発明の実施例に係る空気調和装置の構成を
示す縦断面図、第2図及び第3図は、同実施例の構成上
の要部の作用を示す説明図、第4図は、同第1図の実施
例構造による場合の送風能力向上効果を示すグラフ、第
5図は、従来の空気調和装置の構成を示す縦断面図、第
6図及び第7図は、同第5図の従来の空気調和装置の構
成による作用効果を示す第2図及び第3図と同様の説明
図である。 l・・・番 4・・・・ 4a・・− 5・・・◆ 5a・・− 6・・・・ ・外部ケーシング ・主板 ・主板延長部 ・側板 ・側板延長部 ・送風羽根 7 ・ ・ 8 ・ ・ 9 ・ ・ 9a ・ 10 ・ 1 ・ 2 ・ 3 ・ 4 ・ 5 ・ a b 7 ・ 羽根車 遠心ファン 駆動用電動機 回転軸 空気調和装置本体 開口 空気吹き出し口 熱交換器 底壁部 係止縁 内側領域 外側領域 ドレン空間 第2図 第3図 第4図
FIG. 1 is a longitudinal cross-sectional view showing the configuration of an air conditioner according to an embodiment of the present invention, FIGS. The figure is a graph showing the effect of improving air blowing capacity when using the structure of the embodiment shown in Fig. 1, Fig. 5 is a longitudinal sectional view showing the structure of a conventional air conditioner, and Figs. 6 and 7 are the same. FIG. 6 is an explanatory diagram similar to FIGS. 2 and 3, showing the effects of the configuration of the conventional air conditioner shown in FIG. 5; l... No. 4... 4a...- 5...◆ 5a...- 6... ・External casing, main plate, main plate extension, side plate, side plate extension, blower blade 7 ・ ・ 8・ ・ 9 ・ ・ 9a ・ 10 ・ 1 ・ 2 ・ 3 ・ 4 ・ 5 ・ a b 7 ・ Impeller Centrifugal fan drive electric motor Rotating shaft Air conditioner body opening Air outlet Heat exchanger Bottom wall retaining edge inside Area outside area drain space Figure 2 Figure 3 Figure 4

Claims (1)

【特許請求の範囲】[Claims] 1.主板(4)及び側板(5)間に配設された複数枚の
送風羽根(6),(6)・・よりなる羽根車(7)を有
し回転軸(9)と直交又は略直交する方向に送風する遠
心ファン(8)と該遠心ファン(8)の上記羽根車(7
)の外周囲に配設された空気調和用熱交換器(13)と
を備えてなる空気調和装置において、上記羽根車(7)
の側板(5)又は主板(4)の外径を上記羽根車(7)
の送風羽根(6),(6)・・の外径よりも大きく形成
したことを特徴とする空気調和装置。
1. It has an impeller (7) consisting of a plurality of blowing blades (6), (6), etc. arranged between the main plate (4) and the side plate (5), and is perpendicular or substantially perpendicular to the rotation axis (9). A centrifugal fan (8) that blows air in the direction and the impeller (7) of the centrifugal fan (8)
) and an air conditioning heat exchanger (13) disposed around the outer periphery of the impeller (7).
The outer diameter of the side plate (5) or main plate (4) of the impeller (7)
An air conditioner characterized in that the outer diameter of the blower blades (6), (6), etc. is larger than that of the air conditioner.
JP63322917A 1988-12-20 1988-12-20 Air conditioner Expired - Lifetime JPH0723778B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63322917A JPH0723778B2 (en) 1988-12-20 1988-12-20 Air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63322917A JPH0723778B2 (en) 1988-12-20 1988-12-20 Air conditioner

Publications (2)

Publication Number Publication Date
JPH02166323A true JPH02166323A (en) 1990-06-27
JPH0723778B2 JPH0723778B2 (en) 1995-03-15

Family

ID=18149070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63322917A Expired - Lifetime JPH0723778B2 (en) 1988-12-20 1988-12-20 Air conditioner

Country Status (1)

Country Link
JP (1) JPH0723778B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998058213A1 (en) * 1997-06-17 1998-12-23 Daikin Industries, Ltd. Air conditioner
KR100442264B1 (en) * 2002-01-03 2004-07-30 엘지전자 주식회사 In-door-unit of ceiling type air-conditioner
EP2781844A1 (en) * 2013-02-21 2014-09-24 LG Electronics Inc. Turbo fan and ceiling type air conditioner using the same
WO2016038690A1 (en) * 2014-09-09 2016-03-17 三菱電機株式会社 Indoor unit for air conditioning device, and air conditioning device
WO2023032762A1 (en) * 2021-09-02 2023-03-09 株式会社デンソー Centrifugal fan

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62194128A (en) * 1986-02-18 1987-08-26 Matsushita Electric Ind Co Ltd Ceiling embedded type cooling and heating air conditioner
JPS63128291U (en) * 1987-02-16 1988-08-22

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62194128A (en) * 1986-02-18 1987-08-26 Matsushita Electric Ind Co Ltd Ceiling embedded type cooling and heating air conditioner
JPS63128291U (en) * 1987-02-16 1988-08-22

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998058213A1 (en) * 1997-06-17 1998-12-23 Daikin Industries, Ltd. Air conditioner
AU708393B2 (en) * 1997-06-17 1999-08-05 Daikin Industries, Ltd. Air conditioner
KR100442264B1 (en) * 2002-01-03 2004-07-30 엘지전자 주식회사 In-door-unit of ceiling type air-conditioner
EP2781844A1 (en) * 2013-02-21 2014-09-24 LG Electronics Inc. Turbo fan and ceiling type air conditioner using the same
US9587841B2 (en) 2013-02-21 2017-03-07 Lg Electronics Inc. Turbo fan and ceiling type air conditioner using the same
WO2016038690A1 (en) * 2014-09-09 2016-03-17 三菱電機株式会社 Indoor unit for air conditioning device, and air conditioning device
JPWO2016038690A1 (en) * 2014-09-09 2017-06-01 三菱電機株式会社 Indoor unit for air conditioner and air conditioner
WO2023032762A1 (en) * 2021-09-02 2023-03-09 株式会社デンソー Centrifugal fan

Also Published As

Publication number Publication date
JPH0723778B2 (en) 1995-03-15

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