JP2004353966A

JP2004353966A - Air conditioner

Info

Publication number: JP2004353966A
Application number: JP2003152511A
Authority: JP
Inventors: Yoshiki Izumi; 善樹泉; Takashi Sugio; 孝杉尾; Tsutomu Shimizu; 努清水
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2003-05-29
Filing date: 2003-05-29
Publication date: 2004-12-16

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner having a self-cleaning filter device. <P>SOLUTION: An air filter is arranged between a heat exchanger and a suction grille, inside an indoor unit of the air conditioner provided with at least the heat exchanger and the suction grille, to suck a dust sticking to the air filter. In the air conditioner, a movable suction nozzle is arranged on the windward side of the air filter, and a sucker-exhauster is arranged for sucking and exhausting the dust from the suction nozzle. The sucker-exhauster is formed of a sirocco fan incorporated with a motor, and a casing for surrounding the sirocco fan; and has the function capable of exhausting the dust, by communicating a blowout port of the casing with an exhaust duct for exhausting air outdoors, by connecting a suction port of the casing to a suction duct communicating with the suction nozzle. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、空気調和機の室内機のエアフイルタ−の自動清掃が可能なフィルター清掃装置を備えた空気調和機に関するものである。
【０００２】
【従来の技術】
公知の如く、ファンにより吸込んだ空気を熱交換器で冷却もしくは加熱した後、室内へ送風する空気調和機には、吸込む空気中に漂う塵埃が空気調和機の本体内部へ侵入することを防ぐため、空気調和機の吸込口裏面にエアフィルターが設けられており、このエアフィルターは、付着した塵埃を手で清掃できるように着脱自在に構成されている。
【０００３】
また、エアフィルターの清掃が容易な空気調和機としては、図１０に記載のようにモータ４０で繰出し／巻取られる帯状のフィルター４１とフィルター４１の除塵部材４２と除塵部材４２から、フイルタ−４１に付着したホコリを貯めるダストボックス４３から構成されたフイルタ−装置４３を、空気調和機室内機の吸入パネルの吸気口の裏面に設置した構成と成っているものが知られている（例えば、特許文献１参照）。
【０００４】
【特許文献１】
特開２００１−９９４７９号公報
【０００５】
【発明が解決しようとする課題】
しかしながら、公知技術のエアフィルターは空気調和機の使用頻度に応じて空気調和機より取り外し、水洗いもしくは掃除機などで付着した塵埃を掃除するという周期的なメンテナンスを要する。また更に、周期的なメンテナンスが不要でも、エアフィルターに塵埃が堆積した貯めたダスツボックス４３のホコリを清掃するという、定期的なメンテナンスを必要とするものである。すなわち、空気調和機のエアフィルタ−に堆積するホコリを清掃するというメンテナンスが必ず必要であった。
【０００６】
エアフイルタ−に堆積するホコリは、吸込み空気が貫通していくエアフィルタ−の通気抵抗が増大するため空気調和機・室内機のＣＯＰが低下し、消費電力が増大するという課題もあった。
【０００７】
【課題を解決するための手段】
前記従来の課題を解決するため、本発明の空気調和機は、少なくとも熱交換器と吸入グリルを設けた空気調和機の室内機内部において、前記熱交換器と前記吸入グリルとの間にエアフィルターを設け、前記エアフィルターに付着するホコリを吸引し、移動可能な吸い込みノズルを前記エアフイルタ−の風上側に配し、さらに前記吸い込みノズルからのホコリを吸引・排気する吸引排気装置を配した空気調和機であって、前記吸引排気装置はモ−タを内蔵したシロッコファンと前記シロッコファンを囲むケ−シングとから形成し、前記ケ−シングの吸い込み口を前記吸い込みノズルに連通する吸い込みダクトと繋ぎ、前記ケ−シングの吹き出し口を室外へ排気する排気ダクトに連通させてホコリを排出できる機能を有したことを特徴とする空気調和機を提供できるものである。シロッコファンは、遠心送風機より風量当たりの騒音が低いが、低圧型のために内蔵モ−タを遠心送風機より高速回転させて、以上に記載の経路を通じてホコリを野外に排出するだけの静圧を確保できる。
【０００８】
【発明の実施の形態】
本発明の第１の発明の実施の形態における空気調和機は、吸引排気装置はモ−タを内蔵したシロッコファンと前記シロッコファンを囲むケ−シングとから形成し、前記ケ−シングの吸い込み口を前記吸い込みノズルに連通する吸い込みダクトと繋ぎ、前記ケ−シングの吹き出し口を室外へ排気する排気ダクトに連通させてホコリを排出できる機能を有するものである。
【０００９】
そして、この構成によって、シロッコファンは遠心送風機より風量当たりの騒音が低いが、遠心送風機よりは低圧型のために内蔵モ−タを遠心送風機よりも高速回転させて、吸い込みノズル・吸い込みダクト・シロッコファンを内蔵した吸引排気装置・排気ダクトの順に空気を経由させて、室内の汚れた空気を室外に排気するだけの静圧を充分発揮できる。しかし、室内機の構造上から、吸引排気装置は、小型のために、モ−タを内蔵したシロッコファンにする必要がある。
【００１０】
本発明の第２の実施の形態における空気調和機は、第１の実施の形態における空気調和機において、吸引排気装置は、前記シロッコファンを低速回転させるときは、前記吸い込みノズル・前記吸い込みダクト・前記吸引排気装置・前記排気ダクトの順に空気を経由させて、室内の空気を室外に排気することで、換気するものである。
【００１１】
そして、この構成によって、シロッコファンは遠心送風機より風量当たりの騒音が低いので、シロッコファンを低速回転させるときに、吸い込みノズル・吸い込みダクト・シロッコファンを内蔵した吸引排気装置・排気ダクトの順に空気を経由させて、室内の汚れた空気を室外に排気することで、低騒音な換気の機能をもたせることができる。空気調和機による、常時換気も可能にするものである。
【００１２】
本発明の第３の実施の形態における空気調和機は、吸引排気装置は、風上側から順に、筒に覆われてモ−タを内蔵した第１軸流ファン、前記第１軸流ファンと回転方向が同じ第２軸流ファンとから構成し、前記吸い込みダクトと前記排気ダクトに、前記第１軸流ファンと前記第２軸流ファンを連通しホコリを排出するものである。
【００１３】
そして、この構成によって、軸流ファンと同回転方向の軸流ファンと２段にすることで、１段当たりより約２倍近くのの静圧を発揮できる。吸い込みノズル・吸い込みダクト・２段の軸流ファンキットを内蔵した吸引排気装置・排気ダクトの順に空気を経由させて、室内の汚れた空気を室外に排気するだけの静圧を充分に持ったものである。しかし、室内機の構造上から、吸引排気装置は、小型のために、２個の軸流ファンを高速回転にて回転させるることで充分の静圧を発揮できるものである。２個の軸流ファンを回転させるので、モ−タを小型化できる。軸流ファンが１個でも、低速回転するときは常時換気の機能をも持たせ空気調和機を提供できるものである。
【００１４】
本発明の第４の実施の形態における空気調和機は、吸引排気装置は、風上側から順に、筒に覆われてモ−タと一段の軸流ファンから構成し、前記吸い込みダクトと前記排気ダクトに、前記軸流ファンを連通しホコリを排出するものである。
【００１５】
そして、この構成によって、軸流ファンが１段であるために、部品点数が少なくてすむ。しかし、１段であるために、モ−タをより高速で回転させる必要はあるのでモ−タサイズは大きくなる。そして、モ−タをより高速で回転させることで、以上の経路を経由して、ホコリを排出できだけの高静圧を発揮できる。また、軸流ファンが低速回転するときは常時換気機能をも持たせた空気調和機も提供できるものである。
【００１６】
【実施例】
以下に、本発明の実施例について、図面を参照しながら説明する。
【００１７】
（実施例１）
図１は本発明の空気調和機の室内機の正面外観図、図２は本発明の空気調和機のＩ−Ｉ断面図であり、第３図はＩＩ−ＩＩ断面図であり、第４図は、エアフィルタ−６に関する構造を示した斜視図である。図５は、吸引排気装置の内部構造を示した正面断面図、図６は、吸引排気装置の内部構造を示したＡ−Ａ断面図である。空気調和機の室内機１３の内部に熱交換器１１とクロスフロ−ファン１２を有し、室内機１３のエアフィルター６に付着するホコリを吸引し、エアフイルタ−６の左右に動く吸い込みノズル５をエアフイルタ−６の風上側に配し、さらにホコリを吸引・排気する吸引排気装置７を室内機１３の側面に配置し、吸引排気装置７としてはモ−タ１６を内蔵した軸１６ａに固定されたシロッコファン１４とシロッコファン１４を囲むケ−シング１５とから形成するものである。ケ−シング１５の吸い込み口１７を吸い込みノズル５に連通する吸い込みダクト３と繋ぎ、更に、ケ−シング１５の吹き出し口１７をホコリを室内機から室外へ排気する排気ダクト８に連通させて、ホコリを排出できる機能を持っている。吸い込み口１７から吸引された空気は、ケ−シング１５を覆う部材１９により密閉された空間２０を形成し、その空間２０から、空気をシロッコファン１４に送り込む。ここで、フィルタ−装置１は、フィルタ−枠２にてエアフィルタ−６が固定されている。
【００１８】
そして、この構成によって、シロッコファン１４は、一般に遠心送風機より風量当たりの騒音が低いが低圧型のために、内蔵モ−タ１６をより高速回転させることで、充分にエアフィルタ−６に堆積したホコリを、吸い込みノズル５・吸い込みダクト３から吸い、排気ダクト８を経由してホコリや空気を輸送するだけの静圧を発揮できるものである。また、吸い込み口１７から吸引された空気は、ケ−シング１５を覆う部材１９により密閉さらた空間２０を形成し、その空間２０から、空気をシロッコファン１４に送り込むことで、吸引排気装置７の構成をコンパクト化できる。
【００１９】
（実施例２）
吸引排気装置７としてはモ−タ１６を内蔵したシロッコファン１４とシロッコファン１４を囲むケ−シング１５とから形成し、ケ−シング１５の吸い込み口１７を吸い込みノズル５に連通する吸い込みダクト３と繋ぎ、更に、ケ−シング１５の吹き出し口１８をホコリを室内機１３から室外へ排気する排気ダクト８に連通させる。
【００２０】
そして、この構成によって、シロッコファン１４は遠心送風機より風量当たりの騒音が低いので、シロッコファン１４を低速回転させるときに、吸い込みノズル５、吸い込みダクト３、シロッコファン１４を内蔵した吸引排気装置７、排気ダクト８の順に空気を経由させて、室内の汚れた空気を室外に排気することで、低騒音な換気の機能をもたせることができる。即ち、空気調和機による、常時換気も可能にし、吸引排気装置７のモ−タ１６の入力も低減できる。
【００２１】
（実施例３）
図７は、吸引排気装置７の正面断面図である。
【００２２】
吸引排気装置７としては、風上側から順に、筒２５に覆われてモ−タ２３を内蔵した軸流ファン２１、同回転方向の軸流ファン２２とから構成し、吸い込みダクト３と排気ダクト８に、以上の２段の軸流ファンキットを連通させた構成としホコリを排出でき空気調和機を提供できるものである。モ−タ２３のシャフト２６は、軸流ファン２１、２２に固定されている。２４は、ハブ部分である。
【００２３】
そして、この構成によって、軸流ファン２１と同回転方向の軸流ファン２２のキットを２段にすることで、１段当たりより約２倍の静圧を発揮できる。吸い込みノズル５、吸い込みダクト３、２段の軸流ファンキットを内蔵した吸引排気装置７、排気ダクト８の順に空気を経由させて、室内の汚れた空気を室外に排気するだけの静圧を充分に持ったものである。しかし、室内機１３の構造上から、吸引排気装置７は、小型のために、２個の軸流ファン２１、２２を高速回転にて回転させる必要があるが、モ−タ２３も小型化でき、これらの事によりにより、充分の静圧を発揮できるものである。また、軸流ファン２２が１個でも、低速回転するときは常時換気の機能をも持たせ空気調和機を提供できるものである。
【００２４】
（実施例４）
吸引排気装置７としては、風上側から順に、筒３０に覆われてモ−タ２７と一対の軸流ファン２６とから構成し、吸い込みダクト３と排気ダクト８に、以上の１段の軸流ファン２６を連通させた構成としたものである。モ−タ２７のシャフト２８を軸流ファン２６に固定して、ハブが２９である。
【００２５】
そして、この構成によって、軸流ファン２８、モ−タ２７のキットが１段であるために、部品点数が少なくてすむ。しかし、１段であるために、一対のモ−タ２７をより高速で回転させる必要はある。そこで、モ−タ２７のサイズは大きくなる。そして、１段であってもモ−タ２７をより高速回転させることで、以上の経路を経由して、ホコリを排出できだけの高静圧を有す。また、軸流ファン２８が低速回転するときは常時換気機能をも持たせた空気調和機も提供できるものである。
【００２６】
【発明の効果】
上記実施例から明らかなように、吸い込みノズル、吸い込みダクト、シロッコファンを内蔵した吸引排気装置、排気ダクトの順に空気を経由させて、室内の汚れた空気を室外に排気するだけの静圧を充分に持たせることができる。
【図面の簡単な説明】
【図１】本発明の第１の実施例を空気調和機室内機の正面図
【図２】本発明の第１の実施例を示す空気調和機の断面図（第１図Ｉ−Ｉ断面）
【図３】本発明の第１の実施例を示す空気調和機の断面図（第１図ＩＩ−ＩＩ断面）
【図４】本発明の第１の実施例を示す空気調和機のフイルタ−装置の斜眼図
【図５】本発明の第１の実施例を示す空気調和機の吸引排気装置の内部構造断面図
【図６】本発明の第１の実施例を示す空気調和機の吸引排気装置の内部構造断面図５のＡ−Ａ断面図
【図７】本発明の第３の実施例を示す空気調和機の吸引排気装置の内部構造断面図
【図８】本発明の第４の実施例を示す空気調和機の吸引排気装置の内部構造断面図
【図９】従来の実施例のエアフィルタ−装置の斜視図
【符号の説明】
１フィルター装置
２フレーム枠
３吸い込みダクト
５吸い込みノズル
６エアフイルタ−
７吸引排気装置
８排気ダクト
１１熱交換器
１２クロスフロ−ファン
１３空気調和機・室内機・本体
１４シロッコファン
１５ケ−シング
１７吸い込み口
１８吹き出し口
２１、２２、２６軸流ファン[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air conditioner provided with a filter cleaning device capable of automatically cleaning an air filter of an indoor unit of an air conditioner.
[0002]
[Prior art]
As is well known, an air conditioner that blows air into a room after cooling or heating the air sucked by a fan with a heat exchanger to prevent dust floating in the sucked air from entering the inside of the main body of the air conditioner. In addition, an air filter is provided on the back surface of the suction port of the air conditioner, and the air filter is detachably configured so that the attached dust can be cleaned by hand.
[0003]
As an air conditioner in which the air filter can be easily cleaned, as shown in FIG. 10, a band-shaped filter 41 fed and wound by a motor 40, a dust removing member 42 of the filter 41, and a dust removing member 42 are used. It is known that a filter device 43 composed of a dust box 43 for storing dust adhering to the air conditioner is installed on the back surface of an intake port of an intake panel of an indoor unit of an air conditioner (for example, Patent Document 1). 1).
[0004]
[Patent Document 1]
JP 2001-99479 A
[Problems to be solved by the invention]
However, the air filter according to the known technique requires periodic maintenance such that the air filter is removed from the air conditioner according to the frequency of use of the air conditioner, and the attached dust is cleaned with water or a vacuum cleaner. Furthermore, even if periodic maintenance is not required, periodic maintenance is required, such as cleaning dust from the dust box 43 in which dust has accumulated on the air filter. That is, maintenance for cleaning dust accumulated on the air filter of the air conditioner has always been required.
[0006]
Dust that accumulates on the air filter also has a problem that the COP of the air conditioner / indoor unit decreases and the power consumption increases because the airflow resistance of the air filter through which the sucked air penetrates increases.
[0007]
[Means for Solving the Problems]
In order to solve the conventional problem, an air conditioner of the present invention includes an air filter between the heat exchanger and the suction grill at least inside an indoor unit of an air conditioner provided with a heat exchanger and a suction grill. An air conditioner that sucks dust adhering to the air filter, arranges a movable suction nozzle on the windward side of the air filter, and further includes a suction and exhaust device that sucks and exhausts dust from the suction nozzle. The suction and exhaust device is formed of a sirocco fan having a built-in motor and a casing surrounding the sirocco fan, and a suction port of the casing is connected to a suction duct communicating with the suction nozzle. Air having a function of discharging dust by connecting an outlet of the casing to an exhaust duct for exhausting the air outside the room. It is those that can provide the sum machine. The sirocco fan has a lower noise per air volume than the centrifugal fan, but because of the low pressure type, the built-in motor is rotated at a higher speed than the centrifugal fan to generate a static pressure sufficient to discharge dust to the field through the above-described path. Can be secured.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
In the air conditioner according to the first embodiment of the present invention, the suction / exhaust device is formed by a sirocco fan having a built-in motor and a casing surrounding the sirocco fan, and a suction port of the casing is provided. Is connected to a suction duct communicating with the suction nozzle, and has a function of discharging dust by connecting the outlet of the casing to an exhaust duct for exhausting the air outside the room.
[0009]
With this configuration, the sirocco fan has lower noise per air volume than the centrifugal fan, but because of the lower pressure type than the centrifugal fan, the built-in motor is rotated at a higher speed than the centrifugal fan, and the suction nozzle, the suction duct, and the sirocco fan are rotated. By passing the air in the order of a suction / exhaust device and an exhaust duct with a built-in fan, a static pressure sufficient to exhaust the dirty air in the room to the outside can be exerted sufficiently. However, due to the structure of the indoor unit, the suction and exhaust device needs to be a sirocco fan with a built-in motor because of its small size.
[0010]
The air conditioner according to the second embodiment of the present invention is the air conditioner according to the first embodiment, wherein the suction / exhaust device is configured such that when the sirocco fan is rotated at a low speed, the suction nozzle, the suction duct, Ventilation is performed by exhausting indoor air to the outside through the air in the order of the suction and exhaust device and the exhaust duct.
[0011]
And with this configuration, the sirocco fan has lower noise per air volume than the centrifugal fan, so when rotating the sirocco fan at low speed, the air is discharged in the order of the suction nozzle, the suction duct, the suction and exhaust device with the built-in sirocco fan, and the exhaust duct. By exhausting the dirty air in the room to the outside by passing through, a low-noise ventilation function can be provided. The air conditioner also enables constant ventilation.
[0012]
In the air conditioner according to the third embodiment of the present invention, the suction / exhaust device includes, in order from the windward side, a first axial fan with a built-in motor covered by a cylinder, and a rotation with the first axial fan. The second axial fan has the same direction, and the first and second axial fans are connected to the suction duct and the exhaust duct to discharge dust.
[0013]
With this configuration, by forming the axial flow fan and the axial flow fan having the same rotation direction in two stages, it is possible to exhibit a static pressure approximately twice as high as per stage. A suction nozzle, a suction duct, a suction / exhaust device with a built-in two-stage axial fan kit, and an exhaust duct that has sufficient static pressure to exhaust the dirty air in the room to the outside through the air in order. It is. However, due to the structure of the indoor unit, the suction / exhaust device can exhibit a sufficient static pressure by rotating two axial fans at high speed because of its small size. Since the two axial fans are rotated, the size of the motor can be reduced. Even if there is only one axial fan, the air conditioner can be provided with a function of constant ventilation when rotating at a low speed.
[0014]
In an air conditioner according to a fourth embodiment of the present invention, the suction / exhaust device comprises a motor and a single-stage axial fan covered by a cylinder in order from the windward side, wherein the suction duct and the exhaust duct are provided. Then, the axial fan is connected to discharge dust.
[0015]
With this configuration, the number of components can be reduced because the axial fan has one stage. However, since there is only one stage, it is necessary to rotate the motor at a higher speed, so that the motor size increases. By rotating the motor at a higher speed, a high static pressure sufficient to discharge dust can be exerted through the above-described path. Further, an air conditioner having a ventilation function at all times when the axial fan rotates at a low speed can be provided.
[0016]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
(Example 1)
FIG. 1 is a front external view of an indoor unit of an air conditioner of the present invention, FIG. 2 is a II sectional view of the air conditioner of the present invention, FIG. 3 is a II-II sectional view of FIG. FIG. 3 is a perspective view showing a structure related to an air filter-6. FIG. 5 is a front sectional view showing the internal structure of the suction / exhaust device, and FIG. 6 is an AA sectional view showing the internal structure of the suction / exhaust device. A heat exchanger 11 and a cross-flow fan 12 are provided inside an indoor unit 13 of the air conditioner. The air filter 6 of the indoor unit 13 sucks dust adhering to the air filter 6 and moves the suction nozzle 5 that moves to the left and right of the air filter 6 to the air filter. -6, and a suction and exhaust device 7 for sucking and discharging dust is disposed on the side of the indoor unit 13. The suction and exhaust device 7 is a sirocco fixed to a shaft 16a containing a motor 16. It is formed from a fan 14 and a casing 15 surrounding the sirocco fan 14. The suction port 17 of the casing 15 is connected to the suction duct 3 communicating with the suction nozzle 5, and the blow port 17 of the casing 15 is connected to the exhaust duct 8 for discharging dust from the indoor unit to the outside. It has a function that can discharge. The air sucked from the suction port 17 forms a space 20 closed by a member 19 covering the casing 15, and the air is sent to the sirocco fan 14 from the space 20. Here, in the filter device 1, the air filter 6 is fixed by the filter frame 2.
[0018]
With this configuration, the sirocco fan 14 generally has lower noise per air volume than the centrifugal blower, but because of the low pressure type, the sirocco fan 14 is sufficiently deposited on the air filter 6 by rotating the built-in motor 16 at a higher speed. Dust is sucked from the suction nozzle 5 and the suction duct 3 and a static pressure sufficient to transport dust and air via the exhaust duct 8 can be exerted. The air sucked from the suction port 17 forms a closed space 20 by a member 19 covering the casing 15, and the air is sent into the sirocco fan 14 from the space 20, so that the suction and exhaust device 7 The configuration can be made compact.
[0019]
(Example 2)
The suction / exhaust device 7 includes a sirocco fan 14 having a built-in motor 16 and a casing 15 surrounding the sirocco fan 14, and a suction duct 3 communicating a suction port 17 of the casing 15 with the suction nozzle 5. In addition, the outlet 18 of the casing 15 is communicated with the exhaust duct 8 for exhausting dust from the indoor unit 13 to the outside.
[0020]
With this configuration, the sirocco fan 14 has a lower noise per air volume than the centrifugal blower. Therefore, when the sirocco fan 14 is rotated at a low speed, the suction nozzle 5, the suction duct 3, and the suction / exhaust device 7 incorporating the sirocco fan 14, By exhausting the dirty air in the room to the outside of the room through the air in the order of the exhaust duct 8, a function of ventilation with low noise can be provided. That is, the air conditioner can always provide ventilation, and the input to the motor 16 of the suction and exhaust device 7 can be reduced.
[0021]
(Example 3)
FIG. 7 is a front sectional view of the suction / exhaust device 7.
[0022]
The suction / exhaust device 7 comprises, in order from the windward side, an axial fan 21 covered with a tube 25 and having a built-in motor 23, and an axial fan 22 in the same rotational direction. In addition, the above two-stage axial fan kit can be connected to each other to discharge dust and provide an air conditioner. The shaft 26 of the motor 23 is fixed to the axial fans 21 and 22. 24 is a hub portion.
[0023]
With this configuration, the kit of the axial fan 22 having the same rotational direction as the axial fan 21 is provided in two stages, so that a static pressure approximately twice as high as one stage can be exhibited. Suction nozzle 5, suction duct 3, suction / exhaust device 7 with a built-in two-stage axial fan kit, and exhaust duct 8 are passed through air in this order, and the static pressure enough to exhaust the dirty air in the room to the outside is sufficient. It was what I had. However, due to the structure of the indoor unit 13, the suction and exhaust device 7 needs to rotate the two axial fans 21 and 22 at high speed for small size, but the motor 23 can be downsized. Due to these facts, a sufficient static pressure can be exerted. Further, even if only one axial fan 22 is provided, the air conditioner can also be provided with a function of constant ventilation when rotating at a low speed.
[0024]
(Example 4)
The suction / exhaust device 7 includes, in order from the windward side, a motor 27 covered with a cylinder 30 and a pair of axial fans 26, and the above-described one-stage axial flow is applied to the suction duct 3 and the exhaust duct 8. This is a configuration in which the fan 26 is connected. The shaft 28 of the motor 27 is fixed to the axial fan 26, and the hub is 29.
[0025]
With this configuration, the kit of the axial flow fan 28 and the motor 27 is one-stage, so that the number of parts is small. However, because of one stage, it is necessary to rotate the pair of motors 27 at higher speed. Therefore, the size of the motor 27 increases. By rotating the motor 27 at a higher speed even in one stage, the motor 27 has a high static pressure enough to discharge dust through the above-described path. Further, it is possible to provide an air conditioner having a constant ventilation function when the axial fan 28 rotates at a low speed.
[0026]
【The invention's effect】
As is clear from the above embodiment, the suction nozzle, the suction duct, the suction / exhaust device with a built-in sirocco fan, and the exhaust duct are passed through the air in order, and the static pressure enough to exhaust the dirty air in the room to the outside is sufficient. Can be held.
[Brief description of the drawings]
FIG. 1 is a front view of an air conditioner indoor unit according to a first embodiment of the present invention; FIG. 2 is a cross-sectional view of the air conditioner according to the first embodiment of the present invention (sectional view taken along the line II of FIG. 1);
FIG. 3 is a sectional view of the air conditioner showing the first embodiment of the present invention (a sectional view taken along line II-II in FIG. 1).
FIG. 4 is a perspective view of a filter device of the air conditioner showing the first embodiment of the present invention; FIG. 5 is a cross-sectional view of the internal structure of a suction / exhaust device of the air conditioner showing the first embodiment of the present invention; FIG. 6 is a sectional view taken along line AA of FIG. 5 showing the internal structure of the suction / exhaust device of the air conditioner showing the first embodiment of the present invention. FIG. 7 is an air conditioner showing a third embodiment of the present invention. FIG. 8 is a sectional view showing the internal structure of a suction / exhaust device of an air conditioner according to a fourth embodiment of the present invention. FIG. 9 is a perspective view of an air filter device of a conventional embodiment. Figure [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Filter device 2 Frame 3 Suction duct 5 Suction nozzle 6 Air filter
7 suction and exhaust device 8 exhaust duct 11 heat exchanger 12 cross-flow fan 13 air conditioner / indoor unit / main body 14 sirocco fan 15 casing 17 suction port 18 outlet ports 21, 22, 26 axial flow fan

Claims

At least inside the indoor unit of the air conditioner provided with a heat exchanger and a suction grill, an air filter is provided between the heat exchanger and the suction grill, and the dust attached to the air filter is sucked and movable. An air conditioner in which a suction nozzle is arranged on the windward side of the air filter and a suction / exhaust device for sucking / exhausting dust from the suction nozzle is provided, wherein the suction / exhaust device has a built-in motor. The casing is formed of a fan and a casing surrounding the sirocco fan. The suction port of the casing is connected to a suction duct communicating with the suction nozzle, and the outlet of the casing is communicated with an exhaust duct for exhausting the air outside the room. An air conditioner characterized by having a function of discharging dust.

The suction and exhaust device, when rotating the sirocco fan at a low speed, by passing air through the suction nozzle, the suction duct, the suction and exhaust device, and the exhaust duct in this order to exhaust indoor air to the outside. The air conditioner according to claim 1, wherein ventilation is performed.

At least inside the indoor unit of the air conditioner provided with a heat exchanger and a suction grill, an air filter is provided between the heat exchanger and the suction grill, and the dust attached to the air filter is sucked and movable. An air conditioner in which a suction nozzle is arranged on the windward side of the air filter, and further provided with a suction and exhaust device for sucking and discharging dust from the suction nozzle, wherein the suction and exhaust device is a cylinder in order from the windward side. A first axial fan having a built-in motor and a second axial fan having the same rotational direction as the first axial fan, the first axial fan being provided in the suction duct and the exhaust duct. An air conditioner characterized by discharging a dust through a flow fan and the second axial flow fan.

At least inside the indoor unit of the air conditioner provided with a heat exchanger and a suction grill, an air filter is provided between the heat exchanger and the suction grill, and the dust attached to the air filter is sucked and movable. An air conditioner in which a suction nozzle is arranged on the windward side of the air filter, and further provided with a suction and exhaust device for sucking and discharging dust from the suction nozzle, wherein the suction and exhaust device is a cylinder in order from the windward side. An air conditioner comprising a motor and a single-stage axial fan covered by a fan, and communicating the axial fan with the suction duct and the exhaust duct to discharge dust.