JP6031340B2 - Air conditioner fan control method and air conditioner - Google Patents

Air conditioner fan control method and air conditioner Download PDF

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JP6031340B2
JP6031340B2 JP2012257645A JP2012257645A JP6031340B2 JP 6031340 B2 JP6031340 B2 JP 6031340B2 JP 2012257645 A JP2012257645 A JP 2012257645A JP 2012257645 A JP2012257645 A JP 2012257645A JP 6031340 B2 JP6031340 B2 JP 6031340B2
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air conditioner
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rotational speed
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JP2014105898A (en
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林　徹郎
徹郎 林
鎭 山梨
鎭 山梨
秀雄 寺内
秀雄 寺内
大介 朝桐
大介 朝桐
伸彦 船木
伸彦 船木
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Sekisui Chemical Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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Description

本発明は、筺体内で空調された空気を被空調エリアに供給する空気調和機及び空気調和機のファン制御方法に関する。 The present invention relates to an air conditioner that supplies air conditioned in a housing to an air-conditioned area and a fan control method for the air conditioner.

空気調和機には、一台で複数の被空調エリアを空調（温度調整、又は湿度調整、あるいは空気の清浄）するものがあり、その具体例が特許文献１に記載されている。
特許文献１の空気調和機は、複数の被空調エリアにそれぞれ対応する複数の流路を備え、各流路には、筺体内で加熱、あるいは冷却された空気を被空調エリアに送るファンが設けられている。
筺体内の空間を介して連結されている各流路には、ファンの送風圧によって開き、ファンの停止時に閉じる逆流防止手段（ダンパ機構）が設けられている。これにより、被空調エリアからファンが停止している流路を通って逆流した空気が、ファンが作動中の流路を通って被空調エリアに送られるのを防いでいる。 Some air conditioners air-condition a plurality of air-conditioned areas (temperature adjustment, humidity adjustment, or air purification), and a specific example is described in Patent Document 1.
The air conditioner of Patent Literature 1 includes a plurality of flow paths corresponding to a plurality of air-conditioned areas, and each flow path is provided with a fan that sends heated or cooled air to the air-conditioned area. It has been.
Each flow path connected through the space in the housing is provided with a backflow prevention means (damper mechanism) that opens by the blower pressure of the fan and closes when the fan is stopped. This prevents air that has flowed back from the air-conditioned area through the channel where the fan is stopped from being sent to the air-conditioned area through the channel where the fan is operating.

特開平１１−２４８１９６号公報Japanese Patent Laid-Open No. 11-248196 特開２０００−３４６４１１号公報JP 2000-344411 A

しかしながら、特許文献１の空気調和機では、作動中の複数のファンにおいて、一部のファンの作動を継続した状態で、他のファンを停止すると、ファンを停止した流路にある逆流防止手段が閉じる際の音が大きくなり、居住者に不快感を与えるという問題があった。作動を継続しているファンの風圧によって、ファンを停止した流路の逆流防止手段が勢いよく閉じるためである。 However, in the air conditioner of Patent Document 1, when the other fans are stopped in a plurality of operating fans while the operation of some of the fans is continued, the backflow prevention means in the flow path where the fans are stopped is provided. There was a problem that the sound at the time of closing became loud and the resident was uncomfortable. This is because the backflow prevention means of the flow path in which the fan is stopped closes vigorously by the wind pressure of the fan that continues to operate.

また、作動中のファンを全て停止する場合でも、筺体から送り出される単位時間当たりの空気量が多いと、逆流防止手段の閉じる音が大きくなることが、実験によって確認された。
逆流防止手段の閉じる音を小さくするために、特許文献２に示すように、逆流防止手段が当たる部分にクッション材を用いることも考えられるが、逆流防止手段が閉じるたびに生じる大きな負荷によってクッション材の劣化が進みやすい。そして、逆流防止手段の閉じる音は、クッション材の劣化に伴って大きくなる。
本発明は、かかる事情に鑑みてなされるもので、逆流防止手段が閉じる勢いを抑制して逆流防止手段の閉じる音を小さくする空気調和機のファン制御方法及び空気調和機を提供することを目的とする。 Further, even when all the operating fans are stopped, it has been confirmed by experiments that the closing sound of the backflow prevention means increases when the amount of air per unit time sent out from the housing is large.
In order to reduce the closing sound of the backflow prevention means, as shown in Patent Document 2, it is conceivable to use a cushion material on the portion where the backflow prevention means hits, but the cushion material is caused by a large load generated each time the backflow prevention means is closed. It is easy for deterioration of And the sound of the backflow prevention means closing increases with the deterioration of the cushion material.
The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a fan control method for an air conditioner and an air conditioner that suppresses the momentum at which the backflow prevention means closes and reduces the closing sound of the backflow prevention means. And

前記目的に沿う第１の発明に係る空気調和機のファン制御方法は、筺体から被空調エリアに送られる空気が通過する複数の通風部それぞれに対応し、該筺体内の空気を送り出す複数のファンと、前記各通風部に設けられ、前記ファンの送風圧によって開き、該ファンの停止により閉じる逆流防止手段とを備えた空気調和機のファン制御方法において、作動中の前記ファンの一部に回転数を下げる信号を送信して、前記筺体から送り出される空気の全体量を減少させた後に、作動中の前記ファンの一部に作動停止の信号を送信し、前記回転数を下げる信号が送信されるのは、前記作動停止の信号が送信される前記ファンとは別の前記ファンである。 The fan control method for an air conditioner according to the first aspect of the present invention, which corresponds to each of a plurality of ventilation portions through which air sent from a housing to an air-conditioned area passes, has a plurality of fans that send out air in the housing. If the provided in each ventilation unit, opened by sending wind pressure of the fan, the fan control method of an air conditioner having a backflow preventing means for closing the stop of the fan rotation to a part of the fan in operation sends a signal to lower the number, after reducing the overall amount of air fed from said housing, and transmits a signal of stopping operation in part of the fan in operation, the signal to lower the rotational speed is transmitted Runowa, signals of the operation stop is Ru another said Van der from said fan to be transmitted.

第１の発明に係る空気調和機のファン制御方法において、回転数が下げられた前記ファンは、前記作動停止の信号を送信された前記ファンが停止した後に、元の回転数に戻されるのが好ましい。 In the fan control method of an air conditioner according to the first invention, the fan rotational speed is lowered, after the fan sent a signal of the operation stop is stopped, from being returned to the original rotational speed Is preferred.

第１の発明に係る空気調和機のファン制御方法において、停止中の前記ファンに回転数Ｘによる作動を要求する際、該ファンを、該回転数Ｘで作動させる前に、該回転数Ｘより高い回転数で作動させるのが好ましい。 In the fan control method for an air conditioner according to the first aspect of the present invention, when the operation of the stopped fan is requested at the rotation speed X, the fan is operated at the rotation speed X before the operation at the rotation speed X. It is preferable to operate at a high rotational speed.

第１の発明に係る空気調和機のファン制御方法において、停止中の前記ファンの作動は、作動中の前記ファンの回転数を下げて前記筺体から送り出される空気の全体量を減少させた後に、開始されるのが好ましい。 In the fan control method for an air conditioner according to the first aspect of the present invention, the operation of the stopped fan is performed by reducing the total number of air delivered from the housing by lowering the rotational speed of the operating fan. Preferably it is started.

前記目的に沿う第２の発明に係る空気調和機は、筺体と、前記筺体から被空調エリアに送られる空気が通過する複数の通風部それぞれに対応し、該筺体内の空気を送り出す複数のファンと、前記各通風部に設けられ、前記ファンの送風圧によって開き、該ファンの停止により閉じる逆流防止手段とを備えた空気調和機において、作動中の前記ファンの一部に回転数を下げる信号を送信して、前記筺体から送り出される空気の全体量を減少させた後に、作動中の前記ファンの一部に作動停止の信号を送信する制御手段を備え、前記回転数を下げる信号が送信されるのは、前記作動停止の信号が送信される前記ファンとは別の前記ファンであるのが好ましい。 An air conditioner according to a second aspect of the present invention that meets the above-described object is a plurality of fans that correspond to each of a housing and a plurality of ventilation portions through which air sent from the housing to an air-conditioned area passes, and that sends out air in the housing If the provided in each ventilation unit, opened by sending wind pressure of the fan, the air conditioner having a backflow preventing means for closing the stop of the fan, a signal to reduce the rotational speed to the part of the fan in operation by sending, after reducing the overall amount of air fed from said housing, a control means for transmitting a signal to stop operating the part of the fan in operation, the signal to lower the rotational speed is transmitted Runowa preferably signals the deactivation is Ru another said Van der from said fan to be transmitted.

第２の発明に係る空気調和機において、前記制御手段は、前記作動停止の信号を送信した前記ファンが停止した後、回転数を下げた前記ファンに対して、元の回転数で作動する信号を送信するのが好ましい。 In the air conditioner according to the second invention, before Symbol control means, after the fan has transmitted a signal of the operation stop is stopped, to the fan having a reduced rotational speed, operating at the original rotational speed It is preferable to transmit a signal.

第２の発明に係る空気調和機において、前記制御手段は、回転数Ｘによる作動を要求する停止中の前記ファンに対し、該回転数Ｘより高い回転数で作動する信号を送信した後に、該回転数Ｘで作動する信号を送信するのが好ましい。 In the air conditioner according to the second aspect of the invention, the control means transmits a signal that operates at a higher rotational speed than the rotational speed X to the stopped fan that requires an operation at the rotational speed X, It is preferable to transmit a signal that operates at a rotational speed X.

第２の発明に係る空気調和機において、前記制御手段は、作動中の前記ファンに回転数を下げる信号を送信して前記筺体から送り出される空気の全体量を減少させた後に、停止中の前記ファンに作動を開始する信号を送信するのが好ましい。 In the air conditioner according to a second aspect of the invention, the control means transmits a signal for reducing the rotational speed to the operating fan to reduce the total amount of air sent out from the housing, and then stops the stopped air. It is preferable to send a signal to the fan to start operation.

第１の発明に係る空気調和機のファン制御方法及び第２の発明に係る空気調和機は、作動中のファンの一部に回転数を下げる信号を送信して、筺体から送り出される空気の全体量を減少させた後に、作動中のファンの一部に作動停止の信号を送信するので、逆流防止手段が閉じる音を抑制することが可能である。 An air conditioner according to the first aspect of the invention the fan control method and the second aspect of the air conditioner according to transmits a signal to reduce the rotational speed to the part of the fan in operation, the whole of the air fed from the housing after reducing the amount, and transmits a signal of stopping operation in part of the fan in operation, it is possible to suppress the backflow prevention means closing sound.

本発明の一実施の形態に係る空気調和機の説明図である。It is explanatory drawing of the air conditioner which concerns on one embodiment of this invention. 制御手段の接続を示すブロック図である。It is a block diagram which shows the connection of a control means.

続いて、添付した図面を参照しつつ、本発明を具体化した実施の形態につき説明し、本発明の理解に供する。
図１に示すように、本発明の一実施の形態に係る空気調和機１０は、筺体１１と、筺体１１内の空気を被空調エリアに向かって送り出す複数のファン１２、１２ａ、１２ｂとを備えている。以下、詳細に説明する。 Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIG. 1, an air conditioner 10 according to an embodiment of the present invention includes a housing 11 and a plurality of fans 12, 12a, and 12b that send air in the housing 11 toward an air-conditioned area. ing. Details will be described below.

専用の収容スペース１３内に設置された箱状の筺体１１は、図１に示すように、上下に長く形成され、収容スペース１３の床面積を小さくして居住スペースを広く確保するための設計がなされている。
筺体１１は、筺体１１内から筺体１１外に放出される空気が通る貫通孔１４、１４ａ、１４ｂが上部に形成され、筺体１１内に空気を取り込む吸込口１５が下側に形成されている。
筺体１１内には、図示しない室外機に接続された熱交換器１６とファン１２、１２ａ、１２ｂが設けられ、ファン１２、１２ａ、１２ｂの作動によって吸込口１５から取り込まれた空気は、熱交換器１６を通過して加熱され、あるいは、冷却された後に、貫通孔１４、１４ａ、１４ｂから筺体１１外に放出される。 As shown in FIG. 1, the box-shaped housing 11 installed in the dedicated storage space 13 is formed long in the vertical direction, and has a design for ensuring a large living space by reducing the floor area of the storage space 13. Has been made.
The housing 11 is formed with through holes 14, 14 a, 14 b through which air discharged from the housing 11 to the outside of the housing 11 passes, and a suction port 15 for taking air into the housing 11 is formed on the lower side.
A heat exchanger 16 and fans 12, 12a, 12b connected to an outdoor unit (not shown) are provided in the housing 11, and the air taken in from the suction port 15 by the operation of the fans 12, 12a, 12b is subjected to heat exchange. After being heated through the vessel 16 or cooled, it is discharged out of the housing 11 through the through holes 14, 14a, 14b.

また、筺体１１には、上部に、鉛直方向に沿った筒を斜めに切断した形状を有し、被空調エリアに送られる空気が通過する複数の空気吹出部材（通風部の一例）１７、１７ａ、１７ｂが固定され、空気吹出部材１７、１７ａ、１７ｂはそれぞれ、下側の開口部が貫通孔１４、１４ａ、１４ｂに連結されている。ファン１２、１２ａ、１２ｂは、それぞれ空気吹出部材１７、１７ａ、１７ｂに対応している。
筺体１１の上部には、更に、それぞれ空気吹出部材１７、１７ａ、１７ｂを覆うように配置された筒状のダクト接続部材１８、１８ａ、１８ｂが固定されている。そして、ダクト接続部材１８、１８ａ、１８ｂにはそれぞれ、被空調エリアまで延びるダクト１９、１９ａ、１９ｂが連結されている。 In addition, the housing 11 has a shape obtained by obliquely cutting a cylinder along the vertical direction at the top, and a plurality of air blowing members (an example of a ventilation portion) 17 and 17a through which air sent to the air-conditioned area passes. 17b are fixed, and the air blowing members 17, 17a, 17b have lower openings connected to the through holes 14, 14a, 14b, respectively. The fans 12, 12a, and 12b correspond to the air blowing members 17, 17a, and 17b, respectively.
Further, cylindrical duct connection members 18, 18 a and 18 b arranged so as to cover the air blowing members 17, 17 a and 17 b are fixed to the upper portion of the casing 11. Ducts 19, 19a, 19b extending to the air-conditioned area are connected to the duct connecting members 18, 18a, 18b, respectively.

空気吹出部材１７、１７ａ、１７ｂには、空気吹出部材１７、１７ａ、１７ｂを介して筺体１１外から筺体１１内に空気が流入するのを防ぐ逆流防止手段２０、２０ａ、２０ｂがそれぞれ取り付けられている。
逆流防止手段２０（逆流防止手段２０ａ、２０ｂについても同じ）は、開閉板２１と、この開閉板２１を回動自在に空気吹出部材１７に取り付ける図示しない蝶番を備えている。 The air blowing members 17, 17a, 17b are respectively attached with backflow prevention means 20, 20a, 20b for preventing air from flowing into the housing 11 from outside the housing 11 via the air blowing members 17, 17a, 17b. Yes.
The backflow prevention means 20 (the same applies to the backflow prevention means 20a and 20b) includes an opening / closing plate 21 and a hinge (not shown) for rotatably attaching the opening / closing plate 21 to the air blowing member 17.

開閉板２１は、ファン１２が停止時に、空気吹出部材１７の一側に下り傾斜している上側の開口部に外縁部を密着させ、傾斜した状態で空気吹出部材１７を塞ぐ。そして、ファン１２が作動すると、開閉板２１は、ファン１２の送風圧によって回動し、空気吹出部材１７の上側の開口部を開く。
逆流防止手段２０の蝶番は、空気吹出部材１７に密着して傾斜した開閉板２１の低くなった側に取り付けられ、開閉板２１を、ファン１２の送風圧によって開きやすい状態で開閉自在に支持している。
逆流防止手段２０は、この構成によって、ファン１２の送風圧により開いて空気吹出部材１７を空気の通過が可能な状態にし、ファン１２の停止によって自重により閉じて空気吹出部材１７を空気が通過しないようにしている。 When the fan 12 is stopped, the opening / closing plate 21 closes the air blowing member 17 in an inclined state by bringing the outer edge portion into close contact with the upper opening that is inclined downward toward one side of the air blowing member 17. When the fan 12 is activated, the opening / closing plate 21 is rotated by the blowing pressure of the fan 12 to open the upper opening of the air blowing member 17.
The hinge of the backflow prevention means 20 is attached to the lower side of the opening / closing plate 21 that is in contact with and inclined to the air blowing member 17, and supports the opening / closing plate 21 so that it can be opened and closed easily by the blowing pressure of the fan 12. ing.
With this configuration, the backflow prevention means 20 is opened by the blowing pressure of the fan 12 so that the air blowing member 17 can pass through the air, and the air blowing member 17 is closed by its own weight when the fan 12 stops, so that the air does not pass through the air blowing member 17. I am doing so.

逆流防止手段２０、２０ａ、２０ｂはそれぞれ、ファン１２、１２ａ、１２ｂに対応し、ファン１２が作動すると、逆流防止手段２０が開いて、熱交換器１６を通過した空気は、貫通孔１４、空気吹出部材１７、ダクト接続部材１８、ダクト１９からなる第１の流路を通過して筺体１１から被空調エリアに送られる。そして、ファン１２ａが作動すると、逆流防止手段２０ａが開いて、筺体１１内の空気は、貫通孔１４ａ、空気吹出部材１７ａ、ダクト接続部材１８ａ、ダクト１９ａからなる第２の流路を通過して筺体１１から被空調エリアに送られ、ファン１２ｂが作動すると、逆流防止手段２０ｂが開いて、筺体１１内の空気は、貫通孔１４ｂ、空気吹出部材１７ｂ、ダクト接続部材１８ｂ、ダクト１９ｂからなる第３の流路を通過して筺体１１から被空調エリアに送られる。 The backflow prevention means 20, 20 a, and 20 b correspond to the fans 12, 12 a, and 12 b, respectively. When the fan 12 is activated, the backflow prevention means 20 opens, and the air that has passed through the heat exchanger 16 passes through the through holes 14, the air It passes through the first flow path composed of the blowing member 17, the duct connecting member 18, and the duct 19, and is sent from the housing 11 to the air-conditioned area. When the fan 12a is activated, the backflow prevention means 20a is opened, and the air in the housing 11 passes through the second flow path including the through hole 14a, the air blowing member 17a, the duct connecting member 18a, and the duct 19a. When the fan 12b is operated from the housing 11 to the air-conditioned area, the backflow prevention means 20b is opened, and the air in the housing 11 is a first composed of a through hole 14b, an air blowing member 17b, a duct connecting member 18b, and a duct 19b. 3 is sent from the housing 11 to the air-conditioned area.

第１の流路、第２の流路及び第３の流路は、筺体１１内の空間を介してそれぞれ他の流路とつながっているが、各流路にはファン１２、１２ａ、１２ｂの停止により閉じる逆流防止手段２０、２０ａ、２０ｂが設けられているので、ファン１２、１２ａ、１２ｂにおいて、作動中のファンと停止中のファンが混在していても、停止中のファンに対応する流路を介して被空調エリアから筺体１１に向かって空気が逆流することはない。
なお、ダクト１９、１９ａ、１９ｂの空気の吹き出し側は、同じ被空調エリア内に配置されていてもよいし、それぞれが別々の被空調エリアに配置されていてもよい。 The first flow path, the second flow path, and the third flow path are respectively connected to other flow paths through the space in the housing 11, but each flow path includes fans 12, 12a, and 12b. Since the backflow prevention means 20, 20a, and 20b that are closed by the stop are provided, even if the fans 12 and 12a and 12b have both active and stopped fans, the flow corresponding to the stopped fans is prevented. Air does not flow backward from the air-conditioned area toward the housing 11 via the road.
Note that the air blowing sides of the ducts 19, 19a, and 19b may be arranged in the same air-conditioned area, or may be arranged in separate air-conditioned areas.

ファン１２、１２ａ、１２ｂは、図２に示すように、操作盤２２が接続された制御手段２３に接続されている。制御手段２３は、例えば、マイクロコンピュータによって構成することができ、操作盤２２で入力された操作に従って、ファン１２、１２ａ、１２ｂに対して信号を送信する。
ファン１２（ファン１２ａ、１２ｂについても同じ）の作動レベルには、強モード、中モード、弱モードがあり、居住者は、操作盤２２での操作によって、ファン１２の作動レベルを変えることができる。 As shown in FIG. 2, the fans 12, 12a and 12b are connected to a control means 23 to which an operation panel 22 is connected. The control means 23 can be constituted by a microcomputer, for example, and transmits a signal to the fans 12, 12 a, 12 b in accordance with an operation input through the operation panel 22.
The operation level of the fan 12 (the same applies to the fans 12a and 12b) includes a strong mode, a medium mode, and a weak mode, and the resident can change the operation level of the fan 12 by operating the operation panel 22. .

ダクト１９、１９ａ、１９ｂは、空気調和機１０が設置される建屋の間取りによって、長さを変える必要があり、ダクト１９、１９ａ、１９ｂは長さによってダクト抵抗が異なる。ダクト１９、１９ａ、１９ｂから被空調エリアに吹き出される空気の目標流量は、被空調エリアごとに、その広さや、階等に応じて、強モード、中モード、弱モードそれぞれの値が調整され、例えば、強モードで１０ｍ３／分、中モードで８ｍ３／分、弱モードで６ｍ３／分となる。
このため、空気調和機１０を設置する際に、ファン１２（ファン１２ａ、１２ｂについても同じ）の回転数を変えてダクト１９から被空調エリアに吹き出される空気の流量を計測し、計測結果に基づいて、ファン１２の強モード、中モード、弱モードにおける各回転数が決定される。そして、決定された回転数は、制御手段２３によって記憶される。 The lengths of the ducts 19, 19a, 19b need to be changed depending on the floor plan of the building where the air conditioner 10 is installed, and the duct resistances of the ducts 19, 19a, 19b differ depending on the length. The target flow rate of the air blown out from the ducts 19, 19a, 19b to the air-conditioned area is adjusted for each of the air-conditioned areas in accordance with the size, floor, etc. of each of the strong mode, medium mode, and weak mode. , for example, 10m 3 / min with a strong mode, 8m 3 / minute at medium mode, the 6m 3 / min in a weak mode.
For this reason, when the air conditioner 10 is installed, the flow rate of the air blown from the duct 19 to the air-conditioned area is measured by changing the rotation speed of the fan 12 (the same applies to the fans 12a and 12b). Based on this, the rotational speeds of the fan 12 in the strong mode, medium mode, and weak mode are determined. The determined rotational speed is stored by the control means 23.

次に、空気調和機１０のファン制御方法について説明する。
ファン１２の作動により開いた状態の逆流防止手段２０は、ファン１２の停止により自重によって閉じるが、このとき、ファン１２ａ、１２ｂが作動していると、逆流防止手段２０は、ファン１２ａ、１２ｂがいずれも作動していない状態に比べて勢いよく閉じて閉じる際の音が大きくなる。逆流防止手段２０が勢いよく閉じるのは、筺体１１の内外の気圧差によるもので、ファン１２を停止する際に、筺体１１内から筺体１１外に送り出されている空気量が多いほど、気圧差が大きくなって逆流防止手段２０は勢いよく閉じる。これは、逆流防止手段２０ａ、２０ｂについても同様である。 Next, a fan control method for the air conditioner 10 will be described.
The backflow prevention means 20 opened by the operation of the fan 12 is closed by its own weight when the fan 12 is stopped. At this time, when the fans 12a and 12b are operating, the backflow prevention means 20 is connected to the fans 12a and 12b. Compared to the state where none of them are in operation, the sound when closing and closing is increased. The reason why the backflow preventing means 20 closes vigorously is due to the pressure difference between the inside and outside of the housing 11, and when the fan 12 is stopped, the greater the amount of air sent from the inside of the housing 11 to the outside of the housing 11, The backflow prevention means 20 closes vigorously. The same applies to the backflow prevention means 20a and 20b.

このため、ファン１２、１２ａ、１２ｂのうちＮ個（Ｎ≧２）のファンが作動している状態で、Ｍ個（Ｍ＜Ｎ）のファンの作動を継続して、残りのファンの作動を停止する際には、作動を継続するファンに回転数を下げる信号を送信して回転数を下げ、筺体１１から送り出される空気の全体量を減少させた後に、作動を停止するファンに作動停止の信号を送信するようにしている。このようにすることによって、ファン１２、１２ａ、１２ｂの停止時に、逆流防止手段２０、２０ａ、２０ｂの閉じる音を小さくすることができる。
なお、停止しようとするファンに作動停止の信号を送信する前に、ファンの作動を継続するファンに加え、停止しようとするファンにも、回転数を下げる信号を送信してもよい。 Therefore, in a state where N (N ≧ 2) fans among the fans 12, 12a, and 12b are operating, the operation of M (M <N) fans is continued, and the remaining fans are operated. When stopping the operation, a signal for lowering the rotational speed is transmitted to the fan that continues to operate to lower the rotational speed, reducing the total amount of air sent out from the housing 11, and then stopping the operation of the fan that stops operating. A signal is transmitted. By doing so, the closing sound of the backflow prevention means 20, 20a, 20b can be reduced when the fans 12, 12a, 12b are stopped.
In addition, before transmitting the operation stop signal to the fan to be stopped, a signal for decreasing the rotation speed may be transmitted to the fan to be stopped in addition to the fan that continues the operation of the fan.

この制御方法により、逆流防止手段２０と空気吹出部材１７が当接する箇所や、逆流防止手段２０ａと空気吹出部材１７ａが当接する箇所、あるいは、逆流防止手段２０ｂと空気吹出部材１７ｂが当接する箇所にクッション材や消音材を設けることなく、逆流防止手段２０、２０ａ、２０ｂの閉じる音を小さくすることが可能である。
なお、作動を継続するファンが複数ある場合、その全ての回転数を下げるのが好ましいが、一部のファンのみ回転数を下げるようにしてもよい。
そして、作動を継続するファンで、回転数が下げられたファンは、その他のファンが停止した後に、元の回転数に戻される。 By this control method, at the place where the backflow prevention means 20 and the air blowing member 17 abut, the place where the backflow prevention means 20a and the air blowing member 17a abut, or the place where the backflow prevention means 20b and the air blowing member 17b abut. It is possible to reduce the closing sound of the backflow prevention means 20, 20a, 20b without providing a cushion material or a sound deadening material.
When there are a plurality of fans that continue to operate, it is preferable to reduce the rotational speed of all of them. However, only a part of the fans may have the rotational speed lowered.
The fan whose operation is continued and whose rotation speed is lowered is returned to the original rotation speed after the other fans are stopped.

また、実験によって、ファン１２、１２ａ、１２ｂを全て強モードで作動している状態から、全てを停止すると、ファン１２、１２ａ、１２ｂを全て弱モードで作動している状態から全てを停止する際に比べて、逆流防止手段２０、２０ａ、２０ｂが閉じる音が大きいことが確認された。
このため、本実施の形態では、ファン１２、１２ａ、１２ｂの全てが作動中の場合で、かつ、一つでも中モード、あるいは、強モードで作動しているものがある場合、制御手段２３は、中モード、あるいは、強モードで作動しているファンに対して、回転数を下げる信号を送信し、ファン１２、１２ａ、１２ｂの全てを弱モードで作動させた状態にしてから、ファン１２、１２ａ、１２ｂに対して作動停止の信号を送信し、停止するようにしている。 Further, according to an experiment, when all the fans 12, 12a, and 12b are operated in the strong mode and then all are stopped, when all the fans 12, 12a, and 12b are operated in the weak mode, all are stopped. It was confirmed that the backflow prevention means 20, 20a, 20b closed louder than that.
For this reason, in this embodiment, when all of the fans 12, 12a, 12b are in operation and there is one that is operating in the medium mode or the strong mode, the control means 23 is , A signal to lower the rotational speed is sent to the fan operating in the medium mode or the strong mode, and after all the fans 12, 12a, 12b are operated in the weak mode, the fan 12, An operation stop signal is transmitted to 12a and 12b to stop the operation.

なお、作動中のファン１２、１２ａ、１２ｂに作動停止の信号を送信する前に、筺体１１から送り出される空気の全体量を減少することで、逆流防止手段２０、２０ａ、２０ｂが閉じる音を小さくすることができるので、弱モードより更に回転数の少ないモードを用意し、作動している全てのファンに回転数を下げる信号を送信して弱モードより回転数の少ないモードにしてから、作動中のファン１２、１２ａ、１２ｂ全てを一斉に停止するようにしてもよい。
そして、作動中のファンの全てを停止する場合に限らず、作動中のファンの一部を停止する際にも、作動中のファンの一部あるいは全てに回転数を下げる信号を送信した後に、停止しようとするファンに作動停止の信号を送信することもできる。 In addition, before sending the operation stop signal to the operating fans 12, 12a, 12b, by reducing the total amount of air sent out from the housing 11, the backflow prevention means 20, 20a, 20b can be closed less. Therefore, prepare a mode with a lower rotational speed than the weak mode, send a signal to lower the rotational speed to all operating fans to make it a mode with a lower rotational speed than the weak mode, and then operate All of the fans 12, 12a, 12b may be stopped simultaneously.
And not only when stopping all the operating fans, but also when stopping some of the operating fans, after sending a signal to reduce the rotational speed to some or all of the operating fans, It is also possible to send a stop signal to the fan to be stopped.

また、複数のファン１２、１２ａ、１２ｂを有し、第１、第２、第３の流路がつながっている空気調和機１０において、停止中のファンの作動を開始する際、他のファンが作動していると、作動を開始したファンに対応する逆流防止手段が開かないという問題が生じることがある。
そこで、本実施の形態では、制御手段２３が、ファンが作動中に他の停止中のファンに弱モード（回転数Ｘ）による作動を要求する際、停止していたファンを弱モードより高い回転数である中モード、あるいは、強モードで作動させた後に、回転数を下げる信号を送信して、作動レベルを弱モードに変えるようにしている。 In the air conditioner 10 having a plurality of fans 12, 12 a, and 12 b and having the first, second, and third flow paths connected to each other, when other fans are started, If it is operating, there may be a problem that the backflow prevention means corresponding to the fan that has started operating does not open.
Therefore, in the present embodiment, when the control unit 23 requests the other stopped fan to operate in the weak mode (rotation speed X) while the fan is operating, the stopped fan rotates higher than the weak mode. After operating in the medium mode which is a number or in the strong mode, a signal for decreasing the rotational speed is transmitted to change the operating level to the weak mode.

なお、逆流防止手段が開かないという問題は、ファンのいずれもが作動していない状態で、ファンを作動させる際にも生じ得ることが確認された。ダクト抵抗の大きさや、逆流防止手段の経年劣化、あるいは、逆流防止手段と空気吹出部材が結露により密着していること等が、その原因として考えられる。
従って、本実施の形態では、ファン１２、１２ａ、１２ｂの全てが作動していない状態で、ファンを弱モードで作動することが要求された際に、該当のファンを中モード、あるいは、強モードで作動させてから、弱モードで作動するようにしている。 It has been confirmed that the problem that the backflow prevention means does not open can also occur when the fan is operated while none of the fans are operating. Possible causes are the size of duct resistance, the aging of the backflow prevention means, or the close contact between the backflow prevention means and the air blowing member.
Therefore, in the present embodiment, when it is requested to operate the fan in the weak mode with all the fans 12, 12a, 12b not operating, the corresponding fan is set to the medium mode or the strong mode. It is made to operate in the weak mode after being operated with.

また、ファン１２、１２ａ、１２ｂの一部が作動している際に停止中のファンの作動を開始する際、作動しているファンの回転数を下げて筺体１１から送り出される空気の全体量を減少させた後に、停止中のファンの作動を開始することによっても、逆流防止手段が開かないという問題を解決することができる。
これは、停止中のファンの作動を開始する前に、筺体１１内と筺体１１外の気圧差を小さくすることによって、閉じている逆流防止手段がファンの送風圧によって開きやすい状態にするものである。 Further, when the operation of the stopped fan is started when some of the fans 12, 12a, 12b are operating, the total amount of air sent out from the housing 11 by reducing the rotational speed of the operating fan is reduced. The problem that the backflow prevention means does not open can also be solved by starting the operation of the stopped fan after the reduction.
This is to make the closed backflow prevention means easy to open by the fan blowing pressure by reducing the pressure difference between the inside of the housing 11 and the outside of the housing 11 before starting the operation of the stopped fan. is there.

以上、本発明の実施の形態を説明したが、本発明は、上記した形態に限定されるものでなく、要旨を逸脱しない条件の変更等は全て本発明の適用範囲である。
例えば、空気調和機は、温度調整を行うものに限定されず、湿度調整を行うものや、室外機を備えず、筺体内にフィルタを備えて空気の清浄化のみを行うものであってもよい。
また、空気吹出部材を用いず、逆流防止手段を、直接、筺体の上部の貫通孔に取り付けて貫通孔を閉じるようにしてもよく、この場合、筺体に形成された貫通孔が通風部となる。
そして、逆流防止手段は、ファン停止時に自重によって閉じるものに限定されず、ファン停止時にばねによって閉じるものであってもよい。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions and the like that do not depart from the gist are within the scope of the present invention.
For example, the air conditioner is not limited to the one that performs temperature adjustment, and may be one that performs humidity adjustment, or that does not include an outdoor unit but includes a filter in the housing and performs only air purification. .
Further, without using the air blowing member, the backflow prevention means may be directly attached to the through hole in the upper part of the housing to close the through hole. In this case, the through hole formed in the housing becomes the ventilation portion. .
And a backflow prevention means is not limited to what closes with dead weight at the time of a fan stop, You may close with a spring at the time of a fan stop.

１０：空気調和機、１１：筺体、１２、１２ａ、１２ｂ：ファン、１３：収容スペース、１４、１４ａ、１４ｂ：貫通孔、１５：吸込口、１６：熱交換器、１７、１７ａ、１７ｂ：空気吹出部材、１８、１８ａ、１８ｂ：ダクト接続部材、１９、１９ａ、１９ｂ：ダクト、２０、２０ａ、２０ｂ：逆流防止手段、２１：開閉板、２２：操作盤、２３：制御手段 10: Air conditioner, 11: Housing, 12, 12a, 12b: Fan, 13: Storage space, 14, 14a, 14b: Through hole, 15: Suction port, 16: Heat exchanger, 17, 17a, 17b: Air Blowout member, 18, 18a, 18b: Duct connection member, 19, 19a, 19b: Duct, 20, 20a, 20b: Backflow prevention means, 21: Opening / closing plate, 22: Operation panel, 23: Control means

Claims (8)

筺体から被空調エリアに送られる空気が通過する複数の通風部それぞれに対応し、該筺体内の空気を送り出す複数のファンと、前記各通風部に設けられ、前記ファンの送風圧によって開き、該ファンの停止により閉じる逆流防止手段とを備えた空気調和機のファン制御方法において、
作動中の前記ファンの一部に回転数を下げる信号を送信して、前記筺体から送り出される空気の全体量を減少させた後に、作動中の前記ファンの一部に作動停止の信号を送信し、
前記回転数を下げる信号が送信されるのは、前記作動停止の信号が送信される前記ファンとは別の前記ファンであることを特徴とする空気調和機のファン制御方法。 Corresponding to each of a plurality of ventilation sections through which air sent from the enclosure to the air-conditioned area passes, a plurality of fans for sending out the air in the enclosure, and provided in each ventilation section, opened by the blowing pressure of the fans, In a fan control method for an air conditioner comprising backflow prevention means that closes when the fan stops,
By sending a signal to reduce the rotational speed to the part of the fan in operation, after reducing the overall amount of air fed from said housing, and transmits a signal of stopping operation in part of the fan in operation ,
Wherein the signal to reduce the rotational speed is transmitted, the fan fan control method of an air conditioner, wherein another of the Van der Rukoto the signal of the operation stop is transmitted. 請求項１記載の空気調和機のファン制御方法において、回転数が下げられた前記ファンは、前記作動停止の信号を送信された前記ファンが停止した後に、元の回転数に戻されることを特徴とする空気調和機のファン制御方法。 In the fan control method of an air conditioner according to claim 1, wherein the fan rotational speed is lowered, after the fan sent a signal of the operation stop has stopped, to be returned to the original rotational speed The fan control method of the air conditioner characterized by the above-mentioned. 請求項１又は２記載の空気調和機のファン制御方法において、停止中の前記ファンに回転数Ｘによる作動を要求する際、該ファンを、該回転数Ｘで作動させる前に、該回転数Ｘより高い回転数で作動させることを特徴とする空気調和機のファン制御方法。 3. The fan control method for an air conditioner according to claim 1, wherein when the operation of the stopped fan is requested at the rotation speed X, the rotation speed X is set before the fan is operated at the rotation speed X. 4. A fan control method for an air conditioner, wherein the fan is operated at a higher rotational speed. 請求項１又は２記載の空気調和機のファン制御方法において、停止中の前記ファンの作動は、作動中の前記ファンの回転数を下げて前記筺体から送り出される空気の全体量を減少させた後に、開始されることを特徴とする空気調和機のファン制御方法。 3. The fan control method for an air conditioner according to claim 1, wherein the operation of the stopped fan is performed after the rotation speed of the operating fan is decreased to reduce the total amount of air sent from the housing. A fan control method for an air conditioner, characterized by being started. 筺体と、前記筺体から被空調エリアに送られる空気が通過する複数の通風部それぞれに対応し、該筺体内の空気を送り出す複数のファンと、前記各通風部に設けられ、前記ファンの送風圧によって開き、該ファンの停止により閉じる逆流防止手段とを備えた空気調和機において、
作動中の前記ファンの一部に回転数を下げる信号を送信して、前記筺体から送り出される空気の全体量を減少させた後に、作動中の前記ファンの一部に作動停止の信号を送信する制御手段を備え、
前記回転数を下げる信号が送信されるのは、前記作動停止の信号が送信される前記ファンとは別の前記ファンであることを特徴とする空気調和機。 Corresponding to each of the housing, a plurality of ventilation portions through which air sent from the housing to the air-conditioned area passes, a plurality of fans for sending out air in the housing, and a ventilation pressure of the fans provided in each of the ventilation portions In the air conditioner provided with the backflow prevention means that is opened by and closed by stopping the fan,
By sending a signal to reduce the rotational speed to the part of the fan in operation, after reducing the overall amount of air fed from said housing, and transmits a signal of stopping operation in part of the fan in operation With control means ,
Wherein the signal to reduce the rotational speed is transmitted, an air conditioner, wherein another of the Van der Rukoto from said fan signal of the operation stop is transmitted. 請求項５記載の空気調和機において、前記制御手段は、前記作動停止の信号を送信した前記ファンが停止した後、回転数を下げた前記ファンに対して、元の回転数で作動する信号を送信することを特徴とする空気調和機。 The air conditioner of claim 5, wherein, prior Symbol control means, after the fan has transmitted a signal of the operation stop is stopped, to the fan having a reduced rotational speed, a signal operating at the original rotational speed An air conditioner characterized by transmitting. 請求項５又は６記載の空気調和機において、前記制御手段は、回転数Ｘによる作動を要求する停止中の前記ファンに対し、該回転数Ｘより高い回転数で作動する信号を送信した後に、該回転数Ｘで作動する信号を送信することを特徴とする空気調和機。 The air conditioner according to claim 5 or 6, wherein the control means transmits a signal that operates at a higher rotational speed than the rotational speed X to the stopped fan that requires an operation at the rotational speed X, An air conditioner that transmits a signal that operates at the rotational speed X. 請求項５又は６記載の空気調和機において、前記制御手段は、作動中の前記ファンに回転数を下げる信号を送信して前記筺体から送り出される空気の全体量を減少させた後に、停止中の前記ファンに作動を開始する信号を送信することを特徴とする空気調和機。 7. The air conditioner according to claim 5 or 6, wherein the control means is stopped after transmitting a signal for reducing the rotational speed to the operating fan to reduce the total amount of air sent from the housing. An air conditioner that transmits a signal to start operation to the fan.
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