JP2007240112A - Air conditioner - Google Patents

Air conditioner Download PDF

Info

Publication number
JP2007240112A
JP2007240112A JP2006066087A JP2006066087A JP2007240112A JP 2007240112 A JP2007240112 A JP 2007240112A JP 2006066087 A JP2006066087 A JP 2006066087A JP 2006066087 A JP2006066087 A JP 2006066087A JP 2007240112 A JP2007240112 A JP 2007240112A
Authority
JP
Japan
Prior art keywords
drain
air conditioner
drain pump
pump
water
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
Application number
JP2006066087A
Other languages
Japanese (ja)
Inventor
Haruo Nakada
春男 中田
Tomohiro Yabu
知宏 薮
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 JP2006066087A priority Critical patent/JP2007240112A/en
Priority to US12/223,708 priority patent/US20090084127A1/en
Priority to CN2007800059573A priority patent/CN101384858B/en
Priority to KR1020087020218A priority patent/KR100986869B1/en
Priority to PCT/JP2007/054475 priority patent/WO2007105571A1/en
Priority to AU2007225863A priority patent/AU2007225863B2/en
Priority to EP07737988.1A priority patent/EP1995526A4/en
Publication of JP2007240112A publication Critical patent/JP2007240112A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • F24F2013/227—Condensate pipe for drainage of condensate from the evaporator

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent clogging of drain piping by controlling a drain pump in a case when a drainage water discharge method is applied for force feeding the drainage water by the drain pump. <P>SOLUTION: This air conditioner comprises a drain pan for collecting the drainage water dropping from a heat exchanger, and the drain pump for discharging the drainage water in the drain pan. To prevent the clogging of drain piping, a rotational frequency of the drain pump is increased when rotating torque of a DC motor for driving the drain pump is increased, to increase a discharge rate of the drain pump. Further in this conditioner, the drain pump may be operated with delay of a prescribed time from the start of the operation of the air conditioner, or may be operated at prescribed intervals during the operation of the air conditioner. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、空気調和機に関し、特に、空気調和機のドレン配管におけるごみ詰りの防止に関する。   The present invention relates to an air conditioner, and more particularly to prevention of clogging in a drain pipe of an air conditioner.

従来、一部の空気調和機、例えば、天井埋込型、天井吊型などの高所設置型の空気調和機の分野においては、ドレン水をドレンポンプで圧送する排水方式がとられている。また、この排水方式に使用されるドレンポンプとしては、ドレン水を汲み上げるドレン貯留部の水位により吐出容量が自動的に変化する遠心ポンプが一般的に用いられている。さらに、空気調和機の機外に設置されるドレン配管には、天井裏の梁などを避けるためにしばしばトラップが設けられている。このような空気調和機及びその応用例についての従来技術としては、例えば特許文献１に記載されたものがある。
国際公開第２００４／０５３３９８号パンフレット 2. Description of the Related Art Conventionally, in some air conditioners, for example, high-altitude air conditioners such as a ceiling-embedded type and a ceiling-suspended type, a drainage method in which drain water is pumped with a drain pump has been adopted. Further, as a drain pump used in this drainage system, a centrifugal pump in which the discharge capacity is automatically changed depending on the water level of the drain storage part that pumps up drain water is generally used. Furthermore, a drain pipe installed outside the air conditioner is often provided with a trap in order to avoid a beam behind the ceiling. As a prior art about such an air conditioner and its application example, for example, there is one described in Patent Document 1.
International Publication No. 2004/053398 Pamphlet

ところが、ドレンポンプで排出されるドレン水には、大小の一般的なごみの他、配管として使用される銅管の切粉である銅粉、配管の接続部に使用されるシールテープのテープごみ、衣服等の繊維類から発生する繊維ごみなどのごみが含まれている。これらごみは、ドレン配管におけるドレン水の流速が早いときは、ドレン配管に、トラップなどのごみの残留を起しやすい個所があってもドレン水とともに排出されるが、ドレン配管におけるドレン水の流速が遅くなると、トラップなどでごみが残留し、終にはごみ詰まりに発展するおそれがある。なお、従来長年にわたり使用されてきた自然流下式のドレン水排水方式の場合には、ドレン配管の配管径も大きく、このようなごみ詰まりは問題になっていなかった。   However, in the drain water discharged by the drain pump, in addition to large and small general waste, copper powder, which is the cutting powder of copper pipe used as piping, tape waste of sealing tape used in the connection part of piping, Waste such as textile waste generated from textiles such as clothes is included. When the flow rate of drain water in the drain pipe is high, these wastes are discharged together with the drain water even if there is a place where traps and other waste are likely to remain in the drain pipe. When it becomes late, there is a risk that garbage will remain in the trap and eventually become a clogged garbage. In addition, in the case of the natural flow-type drain water drainage system that has been used for many years, the drain pipe has a large pipe diameter, and such clogging has not been a problem.

本発明は、従来技術に存在するこのような問題点に着目してなされたものである。その目的は、ドレン水をドレンポンプで圧送するドレン水排水方式の場合において、ドレンポンプを制御することによりドレン配管のごみ詰りを回避することにある。   The present invention has been made paying attention to such problems existing in the prior art. The purpose is to avoid clogging of the drain piping by controlling the drain pump in the case of a drain water draining system in which drain water is pumped by a drain pump.

上記課題を解決する第１の手段に係る空気調和機は、熱交換器から滴下するドレン水を回収するドレンパンと、ドレンパン内のドレン水を排出するドレンポンプと、ドレンポンプ駆動用のＤＣモータとを備えた空気調和機であって、ドレンポンプ駆動用のＤＣモータは、回転トルクが大きくなったときに回転数を速くするように制御されることを特徴とする。ドレン水中のごみはドレン水の流速が低いときにトラップなどに残留される。したがって、使用期間が長くなると、ドレン配管のトラップなどに残留するごみ量が増加し、ごみの残留程度が所定レベルを超え、ドレンポンプの負荷が大きくなる。この結果、ドレンポンプ駆動用ＤＣモータの回転トルクが大きくなる。したがって、予め、ごみの残留状況とＤＣモータの回転トルクとの関係を把握しておけば、ＤＣモータの回転トルクからごみの残留状況を把握することができる。また、このようにして、ごみの残留状況が所定程度であることを検出したときに、ドレンポンプの回転数を大きくして吐出水量を増大させる。これにより、ドレン配管内のドレン水の流速を上げ、トラップなどに残留しているごみを一気に洗い流すようにする。このような制御を行うことによりドレン配管のごみ詰まりを回避することができる。   An air conditioner according to a first means for solving the above problems includes a drain pan that collects drain water dripped from a heat exchanger, a drain pump that drains drain water in the drain pan, a DC motor for driving the drain pump, The DC motor for driving the drain pump is controlled so as to increase the rotational speed when the rotational torque increases. Garbage in the drain water remains in the trap when the drain water flow rate is low. Therefore, when the service period becomes longer, the amount of dust remaining in the drain piping trap and the like increases, the degree of remaining dust exceeds a predetermined level, and the load on the drain pump increases. As a result, the rotational torque of the DC motor for driving the drain pump increases. Therefore, if the relationship between the residual state of dust and the rotational torque of the DC motor is grasped in advance, the residual state of dust can be grasped from the rotational torque of the DC motor. Further, in this way, when it is detected that the remaining state of the dust is a predetermined level, the number of revolutions of the drain pump is increased to increase the amount of discharged water. As a result, the flow rate of the drain water in the drain pipe is increased, and the dust remaining in the trap or the like is washed away at once. By performing such control, the clogging of the drain piping can be avoided.

また、このような空気調和機において、ドレン水を汲み上げるドレン貯留部の水位によりドレンポンプを発停制御するようにしてもよい。このようにすれば、ドレンポンプの吐出水量の少ないときの運転を減少させることができるので、ごみ詰りをより効果的に回避することができる。   In such an air conditioner, the drain pump may be controlled to start and stop depending on the water level of the drain storage part that pumps up the drain water. In this way, since the operation when the amount of discharged water of the drain pump is small can be reduced, it is possible to avoid clogging more effectively.

また、上記課題を解決する第２の手段に係る空気調和機は、熱交換器から滴下するドレン水を回収するドレンパンと、ドレンパン内のドレン水を排出するドレンポンプとを備えた空気調和機であって、ドレンポンプを、空気調和機の運転開始から一定時間遅延して運転させるものである。このようにすると、ドレン貯留部のドレン水の少ない空気調和機の運転開始直後には、ドレンポンプを運転しないので、ドレン配管におけるごみ詰りの機会を減少させることができる。   An air conditioner according to a second means for solving the above problem is an air conditioner including a drain pan that collects drain water dripped from the heat exchanger, and a drain pump that discharges drain water in the drain pan. Thus, the drain pump is operated with a certain delay from the start of the operation of the air conditioner. If it does in this way, since the drain pump is not operated immediately after the start of the operation of the air conditioner with a small amount of drain water in the drain storage part, the chance of clogging in the drain piping can be reduced.

また、上記課題を解決する第３の手段に係る空気調和機は、熱交換器から滴下するドレン水を回収するドレンパンと、ドレンパン内のドレン水を排出するドレンポンプとを備えた空気調和機であって、空気調和機の運転中、ドレンポンプをタイマにより所定周期で運転させるものである。この空気調和機によれば、ドレンポンプの運転周期を適切に設定することにより、ドレン貯留部の水位が高いときにドレンポンプを運転し、ドレン貯留部の水位が低いときにはドレンポンプを運転しないように概略設定することができる。このようにドレンポンプの運転周期を設定することにより、ごみ詰まりが発生する前にドレン配管に残留するごみを洗い流すことができる。   Moreover, the air conditioner which concerns on the 3rd means which solves the said subject is an air conditioner provided with the drain pan which collect | recovers the drain water dripped from a heat exchanger, and the drain pump which discharges the drain water in a drain pan. Thus, during operation of the air conditioner, the drain pump is operated at a predetermined cycle by a timer. According to this air conditioner, by appropriately setting the operation period of the drain pump, the drain pump is operated when the water level of the drain storage part is high, and the drain pump is not operated when the water level of the drain storage part is low. Can be roughly set. By setting the operation cycle of the drain pump in this manner, it is possible to wash away the dust remaining in the drain pipe before the clogging occurs.

本発明に係る第１の手段による空気調和機によれば、ドレン配管のごみの残留状況が所定程度を超えたときに、ドレンポンプの回転数を上昇させるので、ドレン配管に残留しているごみを一気に洗い流すことができ、ごみ詰りを回避することができる。また、第２、第３の手段による空気調和機によれば、ドレン配管のドレン水の流速が低いときにドレンポンプを運転しないように制御しているので、ドレン配管におけるごみの残留を抑制し、ごみ詰まりを回避することができる。   According to the air conditioner according to the first means of the present invention, when the residual state of the dust in the drain pipe exceeds a predetermined level, the rotational speed of the drain pump is increased, so that the dust remaining in the drain pipe. Can be washed away at once, and clogging can be avoided. Further, according to the air conditioner of the second and third means, since the drain pump is controlled not to operate when the flow rate of the drain water in the drain pipe is low, it is possible to suppress the residue of dust in the drain pipe. , Can avoid clogging.

（実施の形態１）
先ず、本発明の各実施の形態１に係る空気調和機について、図１〜図３に基づき説明する。 (Embodiment 1)
First, the air conditioner according to each embodiment 1 of the present invention will be described with reference to FIGS.

図１は、実施の形態１に係る空気調和機の断面図である。この実施の形態は、高所設置型空気調和機の一つである天井埋込型空気調和機に本発明を適用したものである。この実施の形態１に係る天井埋込型空気調和機は、分離型空気調和機の室内ユニットであり、内部に各種機器を収納する本体１と、本体１の下部に配置される化粧パネル２とを備えている。本体１は、空調室Ｒの天井３に形成された開口部３ａから天井裏に挿入されて取り付けられている。化粧パネル２は、前記天井３の開口部３ａに嵌めこまれて、天井の空調室Ｒ側に密着して取り付けられている。この化粧パネル２の中央部には、空調室内の空気を吸入する吸入口が２ａ形成され、この吸入口２ａを取り囲む周辺４辺部に、冷却又は除湿された空気を吹き出す吹出口２ｂが形成されている。   1 is a cross-sectional view of an air conditioner according to Embodiment 1. FIG. In this embodiment, the present invention is applied to a ceiling-embedded air conditioner that is one of high-altitude air conditioners. The ceiling-embedded air conditioner according to the first embodiment is an indoor unit of a separation-type air conditioner, and includes a main body 1 that houses various devices therein, and a decorative panel 2 that is disposed below the main body 1. It has. The main body 1 is inserted and attached to the back of the ceiling through an opening 3a formed in the ceiling 3 of the air conditioning room R. The decorative panel 2 is fitted into the opening 3a of the ceiling 3 and attached in close contact with the air conditioning room R side of the ceiling. A suction port 2a for sucking air in the air-conditioning room is formed in the central portion of the decorative panel 2, and a blower outlet 2b for blowing out the cooled or dehumidified air is formed on the four peripheral sides surrounding the suction port 2a. ing.

本体１内には、化粧パネル２の中央部に設けられた吸入口２ａを通じて空調室内の空気を本体１内に吸入して外周方向に吹き出す送風機４と、送風機４の外周を取り囲むように配置された熱交換器５とが収納されている。熱交換器５の下方には、熱交換器５で発生して滴下するドレン水を受けるドレンパン６が配置されている。ドレンパン６の一部にはドレン水を貯留するドレン貯留部７が形成され、このドレン貯留部７からドレン水を汲み上げるようにドレンポンプ１０が取り付けられている。なお、図１において、熱交換器５が左右に記載されているが、これらは平面的に見ると一体に繋がっている。またドレンパン６もこの図１においては左右に分離されているように見えるが、これらは平面的には一体に接続されている。   In the main body 1, a blower 4 that sucks air in the air-conditioned room into the main body 1 through the suction port 2 a provided in the central portion of the decorative panel 2 and blows it in the outer peripheral direction, and is arranged so as to surround the outer periphery of the blower 4 The heat exchanger 5 is housed. Below the heat exchanger 5, a drain pan 6 that receives drain water that is generated and dripped by the heat exchanger 5 is disposed. A drain storage part 7 for storing drain water is formed in a part of the drain pan 6, and a drain pump 10 is attached so as to pump up the drain water from the drain storage part 7. In addition, in FIG. 1, although the heat exchanger 5 is described in right and left, these are connected integrally when seeing planarly. The drain pan 6 also appears to be separated into left and right in FIG. 1, but these are integrally connected in plan view.

ここに使用されるドレンポンプ１０は、従来一般に使用されているものであり、ドレン貯留部７のドレン水の水位により吐出容量が自動的に変化する遠心ポンプである。ドレンポンプ１０は、図２に概略示されているように、回転羽根１１を内部に収納した本体ハウジング１２と、羽根を駆動するＤＣモータ１３と、本体ハウジング１２の下部に形成された吸込口１４と、汲み上げたドレン水を吐出する吐出口１５とを備えている。このような構成のドレンポンプ１０は、回転羽根１１を回転することによって生じる遠心力で吸込口１４からドレン水を吸い上げ、吐出口１５からドレン水を吐出する。また、ドレンポンプ１０の吐出口１５には、機外に導出されるドレン配管１６が接続されている。また、このようなドレンポンプ１０は、ドレン貯留部７の水位が高いほど吐出量が大きくなり、ドレン貯留部７の水位が低いほど吐出量が減少する。   The drain pump 10 used here is a centrifugal pump that is generally used in the past, and whose discharge capacity automatically changes depending on the level of the drain water in the drain reservoir 7. As schematically shown in FIG. 2, the drain pump 10 includes a main body housing 12 that houses a rotating blade 11, a DC motor 13 that drives the blade, and a suction port 14 formed in a lower portion of the main body housing 12. And a discharge port 15 for discharging the drained water. The drain pump 10 having such a configuration sucks drain water from the suction port 14 by centrifugal force generated by rotating the rotary blade 11 and discharges the drain water from the discharge port 15. A drain pipe 16 led out of the apparatus is connected to the discharge port 15 of the drain pump 10. Further, in such a drain pump 10, the discharge amount increases as the water level of the drain storage unit 7 increases, and the discharge amount decreases as the water level of the drain storage unit 7 decreases.

また、ドレン貯留部７には、図２に示すように、水位センサ２０が設置されている。水位センサ２０は、ドレン水の水位の変化に応じて上昇又は下降するフロート２１と、フロート２１を支持する支持筒２２とを備えている。水位センサ２０の支持筒２２の内部には、フロート２１が下方に設定された下方水位Ａになったときに作動する第１の接点と、フロート２１が上方に設定された上方水位Ｂになったときに作動する第２の接点とが収納されており、これらの作動信号が制御部２５に送信される。ここで、下方水位Ａは、それ以下に水位が低下したときにドレンポンプ１０の吐出量が減少してドレン配管１６内のドレン水の流速を所定値以上に保持されなくなる位置に設定されており、上方水位Ｂはドレンポンプ１０を運転せずにこのまま放置すると満水状態となる位置に設定されている。   Further, as shown in FIG. 2, a water level sensor 20 is installed in the drain storage unit 7. The water level sensor 20 includes a float 21 that rises or falls according to a change in the water level of the drain water, and a support cylinder 22 that supports the float 21. Inside the support cylinder 22 of the water level sensor 20, a first contact that operates when the float 21 reaches a lower water level A set downward, and an upper water level B that sets the float 21 upward. A second contact that operates sometimes is housed, and these operation signals are transmitted to the control unit 25. Here, the lower water level A is set at a position where the discharge rate of the drain pump 10 decreases when the water level drops below that, and the flow rate of the drain water in the drain pipe 16 is not maintained above a predetermined value. The upper water level B is set to a position where the water level becomes full when the drain pump 10 is left without being operated.

制御部２５は、空気調和機全体を制御するものであって、水位センサ２０からの入力情報に基づき、図３に示すフロ−チャートのようにドレンポンプ１０の運転を制御する。以下空気調和機の運転動作とともに、ドレンポンプ１０の運転制御について図３に基づき説明する。   The control unit 25 controls the entire air conditioner, and controls the operation of the drain pump 10 based on the input information from the water level sensor 20 as in the flowchart shown in FIG. Hereinafter, the operation control of the drain pump 10 together with the operation of the air conditioner will be described with reference to FIG.

空気調和機が冷房運転又は除湿運転されると、空調室Ｒ内の空気が送風機４により吸入口２ａから本体１内に取り込まれ、熱交換器５で冷却又は除湿され、熱交換器５でドレン水が生成される。このドレン水はドレンパン６に受けられ、ドレン貯留部７に溜められる。ドレンポンプ１０は、ドレン貯留部７の水位が上方水位Ｂに達するまでは運転されない（ステップＳ１）。ドレン貯留部７の水位が上方水位Ｂに達すると、標準回転数でドレンポンプ１０が運転される（ステップＳ２）。   When the air conditioner is cooled or dehumidified, the air in the air conditioning room R is taken into the main body 1 from the suction port 2a by the blower 4, cooled or dehumidified by the heat exchanger 5, and drained by the heat exchanger 5. Water is produced. This drain water is received by the drain pan 6 and stored in the drain storage part 7. The drain pump 10 is not operated until the water level in the drain reservoir 7 reaches the upper water level B (step S1). When the water level in the drain reservoir 7 reaches the upper water level B, the drain pump 10 is operated at the standard rotation speed (step S2).

空気調和機が長期使用されている場合は、ドレン配管１６のトラップ（図示せず）にごみが残留し易い。もし、ドレン配管１６に所定程度のごみの残留が発生した場合は、ドレンポンプ１０の回転トルクが上昇し、ＤＣモータ１３の回転トルクが上昇する。そこで、本発明ではＤＣモータ１３の回転トルクが所定値以下かどうかを判断し（ステップＳ３）、これによりドレン配管１６内のごみの残留状況を見ている。この場合、ＤＣモータ１３の回転トルクは直接的又は間接的な適宜の方法により測定すればよい。例えば、ＤＣモータ１３の電流値により間接的に測定する方法でもよい。ＤＣモータ１３の回転トルクが所定値以下の場合はそのまま運転が継続される。ただし、ドレン貯留部７の水位が下方水位以下であることが確認された場合（ステップＳ６）、ドレン配管１６内のドレン水の流速が所定値以下に下がり、ごみが残留し易くなるので、ドレンポンプ１０の運転を停止する（ステップＳ７）。   When the air conditioner has been used for a long time, dust tends to remain in the trap (not shown) of the drain pipe 16. If a predetermined amount of dust remains in the drain pipe 16, the rotational torque of the drain pump 10 increases and the rotational torque of the DC motor 13 increases. Therefore, in the present invention, it is determined whether or not the rotational torque of the DC motor 13 is equal to or less than a predetermined value (step S3), and the residual state of the dust in the drain pipe 16 is thereby observed. In this case, the rotational torque of the DC motor 13 may be measured by an appropriate method, directly or indirectly. For example, a method of indirectly measuring the current value of the DC motor 13 may be used. If the rotational torque of the DC motor 13 is equal to or less than a predetermined value, the operation is continued as it is. However, when it is confirmed that the water level in the drain storage part 7 is lower than the lower water level (step S6), the flow rate of the drain water in the drain pipe 16 is reduced to a predetermined value or less, and dust tends to remain. The operation of the pump 10 is stopped (step S7).

一方、ＤＣモータ１３の回転トルクが所定値を超えていると判断される場合（ステップＳ３）は、ドレン配管１６のごみ残留状況が所定程度を超えていることによりＤＣモータ１３の回転トルクが上昇したと考えられる。そこで、ドレンポンプ１０の吐出量を多くしてドレン配管１６のドレン水の流速を上昇させ、残留ごみを一気に洗い流すようにしている。このために、所定時間、ドレンポンプ１０の回転数を所定値増加させて運転し（ステップＳ４）、所定時間経過後、標準の回転数に戻すようにしている（ステップＳ５）。また、その後、ドレン貯留部７の水位が所定値以下に低下した場合（ステップＳ６）は、前述のようにドレンポンプ１０の運転を停止する（ステップＳ７）。以降この手順を繰り返しながら制御される。したがって、ドレンポンプ１０の回転数を所定時間上昇させた後、標準回転数に移行した場合において、なお、ＤＣモータ１３の回転トルクが大きいと判断された場合は、再びドレンポンプ１０の回転数を所定時間の間増加させるように制御されることになる。   On the other hand, when it is determined that the rotational torque of the DC motor 13 exceeds a predetermined value (step S3), the rotational torque of the DC motor 13 increases due to the dust remaining state of the drain pipe 16 exceeding a predetermined level. It is thought that. Therefore, the discharge amount of the drain pump 10 is increased to increase the flow rate of the drain water in the drain pipe 16 so that the remaining waste is washed away at once. For this purpose, the rotational speed of the drain pump 10 is increased by a predetermined value for a predetermined time (step S4), and after the predetermined time has elapsed, the standard speed is returned (step S5). Moreover, after that, when the water level of the drain storage part 7 falls below a predetermined value (step S6), the operation of the drain pump 10 is stopped as described above (step S7). Thereafter, control is performed while repeating this procedure. Therefore, when the rotational speed of the drain pump 10 is increased for a predetermined time and then shifted to the standard rotational speed, if it is determined that the rotational torque of the DC motor 13 is large, the rotational speed of the drain pump 10 is again set. It will be controlled to increase for a predetermined time.

以上のように構成された本実施の形態の空気調和機によれば、ドレン配管１６のごみ残留状況が所定程度を超える場合は、所定時間、ドレンポンプ１０の回転数を増加させて一気にごみを洗い流すので、ドレン配管１６のごみ詰まりを予防することができる。また、ドレン水を汲み上げるドレン貯留部７の水位によりドレンポンプ１０を発停制御するようにしているので、ドレンポンプ１０の吐出水量の少ないときの運転を減少させることができる。これにより、ドレン配管１６におけるごみの残留をさらに抑制することができる。   According to the air conditioner of the present embodiment configured as described above, when the residual amount of dust in the drain pipe 16 exceeds a predetermined level, the number of revolutions of the drain pump 10 is increased for a predetermined time, and garbage is discharged at once. Since it is washed away, the clogging of the drain pipe 16 can be prevented. In addition, since the drain pump 10 is controlled to start and stop by the water level of the drain reservoir 7 that pumps up the drain water, the operation when the amount of discharged water of the drain pump 10 is small can be reduced. Thereby, the residue of the dust in the drain piping 16 can further be suppressed.

（実施の形態２）
実施の形態２は、ドレンポンプ１０の制御が実施の形態１と異なるものである。すなわち、空気調和機の運転当初は、ドレン貯留部７のドレン水の水位は低いのが通常である。したがって、空気調和機の運転当初にドレンポンプ１０を運転すると、ドレンポンプ１０の吐出量が少なくなる。他方、ドレンパン６などに溜まっていたごみがドレンポンプ１０にドレン水とともに吸引され、ドレン配管１６に流さる。これにより、ドレン配管１６のごみ残留が促進され好ましくないと考えられる。なお、実施の形態１のような水位センサ２０を用いない点で実施の形態１と異なるが、他の構成は実施の形態１と同一とし、実施の形態１の符号を使用して説明する。 (Embodiment 2)
In the second embodiment, the control of the drain pump 10 is different from the first embodiment. That is, at the beginning of the operation of the air conditioner, the drain water level in the drain reservoir 7 is usually low. Therefore, if the drain pump 10 is operated at the beginning of the operation of the air conditioner, the discharge amount of the drain pump 10 decreases. On the other hand, the dust accumulated in the drain pan 6 and the like is sucked together with the drain water by the drain pump 10 and flows into the drain pipe 16. As a result, it is considered that the residue of dust in the drain pipe 16 is promoted, which is not preferable. Although different from the first embodiment in that the water level sensor 20 as in the first embodiment is not used, the other configurations are the same as those in the first embodiment, and description will be made using the reference numerals of the first embodiment.

そこで、この実施の形態においては、図４のフローチャートのようにドレンポンプ１０の運転が制御される。空気調和機の運転が開始されると、ドレンポンプ１０の運転制御が開始される。ドレンポンプ１０の運転制御が開始されると、まずタイマがリセットされる（ステップＳ１１）。続いて、タイマにより一定時間経過したかどうか判断される（ステップＳ１２）。そして、一定時間が経過してからドレンポンプ１０が運転される（ステップＳ１３）。以降ドレンポンプ１０はこの手順を繰り返しながら制御される。   Therefore, in this embodiment, the operation of the drain pump 10 is controlled as in the flowchart of FIG. When the operation of the air conditioner is started, the operation control of the drain pump 10 is started. When the operation control of the drain pump 10 is started, the timer is first reset (step S11). Subsequently, it is determined whether or not a predetermined time has elapsed by the timer (step S12). Then, after a certain time has elapsed, the drain pump 10 is operated (step S13). Thereafter, the drain pump 10 is controlled while repeating this procedure.

この実施の形態２の空気調和機によれば、ドレン貯留部７のドレン水の少ない空気調和機の運転開始時に、ドレンポンプ１０を運転しないので、ドレン配管１６におけるごみ詰りの機会を減少させることができる。   According to the air conditioner of the second embodiment, the drain pump 10 is not operated at the start of the operation of the air conditioner with a small amount of drain water in the drain storage unit 7, thereby reducing the chance of clogging in the drain pipe 16. Can do.

（実施の形態３）
実施の形態３は、ドレンポンプ１０の制御が実施の形態１と異なる他の例である。すなわち、この実施の形態では、ドレンポンプ１０をタイマにより所定周期で運転することにより、できるだけドレンポンプ１０の吐出量を増大させようとするものである。なお、実施の形態１のような水位センサ２０を用いない点で実施の形態１と異なるが、他の構成は実施の形態１と同一とし、実施の形態１の符号を使用して説明する。 (Embodiment 3)
The third embodiment is another example in which the control of the drain pump 10 is different from the first embodiment. In other words, in this embodiment, the discharge amount of the drain pump 10 is increased as much as possible by operating the drain pump 10 with a timer at a predetermined period. Although different from the first embodiment in that the water level sensor 20 as in the first embodiment is not used, the other configurations are the same as those in the first embodiment, and description will be made using the reference numerals of the first embodiment.

このために、この実施の形態においては、図５のフローチャートのように運転制御される。空気調和機の運転が開始されると、ドレンポンプ１０の運転制御が開始される。ドレンポンプ１０の運転制御が開始されると、まずタイマがリセットされる（ステップＳ２１）。続いて、タイマにより一定時間経過したかどうか判断される（ステップＳ２２）。そして、一定時間が経過してからドレンポンプ１０が運転される（ステップＳ２３）。さらに、タイマによりドレンポンプ１０の運転時間が所定時間経過したかどうか判断され（ステップＳ２４）、所定時間経過した場合にドレンポンプ１０の運転を停止する（ステップＳ２５）。以降この手順の制御が繰り返されることにより、ドレンポンプ１０が所定周期で運転される。   For this reason, in this embodiment, operation control is performed as shown in the flowchart of FIG. When the operation of the air conditioner is started, the operation control of the drain pump 10 is started. When the operation control of the drain pump 10 is started, the timer is first reset (step S21). Subsequently, it is determined whether or not a predetermined time has elapsed by the timer (step S22). Then, after a certain time has elapsed, the drain pump 10 is operated (step S23). Further, it is determined by the timer whether or not the operation time of the drain pump 10 has elapsed (step S24), and when the predetermined time has elapsed, the operation of the drain pump 10 is stopped (step S25). Thereafter, the drain pump 10 is operated at a predetermined cycle by repeating the control of this procedure.

この実施の形態３の空気調和機によれば、ドレンポンプ１０の運転周期を適切に設定することにより、ドレン貯留部７の水位が高いときにドレンポンプ１０を運転し、ドレン貯留部７の水位が低いときにはドレンポンプ１０を運転しないように概略設定することができる。このようにドレンポンプ１０の運転周期を設定することにより、ドレン配管１６におけるごみの残留を抑制することができる。   According to the air conditioner of the third embodiment, the drain pump 10 is operated when the water level of the drain storage unit 7 is high by appropriately setting the operation cycle of the drain pump 10, and the water level of the drain storage unit 7. When the value is low, the drain pump 10 can be set roughly so as not to operate. By setting the operation cycle of the drain pump 10 in this way, it is possible to suppress the residue of dust in the drain pipe 16.

なお、以上説明した実施の形態において、ドレンパン６、ドレンポンプ１０、ドレン配管１６などのドレン水の触れる部材を抗菌性材料、たとえば、抗菌剤を包含する樹脂材料や、銅管などの抗菌性金属材料で構成することは好ましいことである。このような材料を本発明において実施すると、抗菌剤による殺菌効果と、ドレンポンプ１０の流速を早くすることによるドレン配管１６に残留するごみを洗い流すことの相乗効果とにより、より一層効果的にドレン配管１６のごみ詰まりを回避することができる。   In the embodiment described above, the drain water contact member such as the drain pan 6, the drain pump 10, and the drain pipe 16 is an antibacterial material, for example, a resin material including an antibacterial agent, or an antibacterial metal such as a copper tube. It is preferable to make it with a material. When such a material is implemented in the present invention, drainage is more effectively achieved by the sterilization effect by the antibacterial agent and the synergistic effect of washing away the dust remaining in the drain pipe 16 by increasing the flow rate of the drain pump 10. The clogging of the piping 16 can be avoided.

本発明は、熱交換器で発生したドレン水をドレンポンプで排出する空気調和機に対して有用である。   INDUSTRIAL APPLICATION This invention is useful with respect to the air conditioner which discharges the drain water which generate | occur | produced with the heat exchanger with the drain pump.

本発明の実施の形態１に係る空気調和機の断面図である。It is sectional drawing of the air conditioner which concerns on Embodiment 1 of this invention. 同空気調和機における水位センサ説明図である。It is water level sensor explanatory drawing in the same air conditioner. 同空気調和機におけるドレンポンプの運転制御フロ−チャートである。It is an operation control flowchart of the drain pump in the same air conditioner. 本発明の実施の形態２に係る空気調和機におけるドレンポンプの運転制御フロ−チャートである。It is an operation | movement control flowchart of the drain pump in the air conditioner which concerns on Embodiment 2 of this invention. 本発明の実施の形態３に係る空気調和機におけるドレンポンプの運転制御フロ−チャートである。It is an operation | movement control flowchart of the drain pump in the air conditioner which concerns on Embodiment 3 of this invention.

符号の説明Explanation of symbols

５…熱交換器、６…ドレンパン、７…ドレン貯留部、１０…ドレンポンプ、１３…ＤＣモータ。
DESCRIPTION OF SYMBOLS 5 ... Heat exchanger, 6 ... Drain pan, 7 ... Drain storage part, 10 ... Drain pump, 13 ... DC motor.

Claims (4)

熱交換器から滴下するドレン水を回収するドレンパンと、ドレンパン内のドレン水を排出するドレンポンプと、ドレンポンプ駆動用のＤＣモータとを備えた空気調和機であって、ドレンポンプ駆動用のＤＣモータは、回転トルクが大きくなったときに回転数を速くするように制御されることを特徴とする空気調和機。   An air conditioner comprising a drain pan that collects drain water dripped from a heat exchanger, a drain pump that drains drain water in the drain pan, and a DC motor for driving the drain pump, the DC for driving the drain pump An air conditioner characterized in that the motor is controlled to increase the rotational speed when the rotational torque increases. 前記ドレンポンプは、前記制御に加え、ドレン水を汲み上げるドレン貯留部の水位により発停制御されることを特徴とする請求項１記載の空気調和機。   2. The air conditioner according to claim 1, wherein the drain pump is controlled to start and stop by a water level of a drain storage part that pumps up drain water in addition to the control. 熱交換器から滴下するドレン水を回収するドレンパンと、ドレンパン内のドレン水を排出するドレンポンプとを備えた空気調和機であって、ドレンポンプは、当該空気調和機の運転開始から一定時間遅延して運転されることを特徴とする空気調和機。   An air conditioner comprising a drain pan that collects drain water dripping from a heat exchanger and a drain pump that drains drain water in the drain pan, the drain pump being delayed by a certain time from the start of operation of the air conditioner The air conditioner is characterized by being operated as 熱交換器から滴下するドレン水を回収するドレンパンと、ドレンパン内のドレン水を排出するドレンポンプとを備えた空気調和機であって、ドレンポンプは、空気調和機の運転中、タイマにより所定周期で運転されることを特徴とする空気調和機。
An air conditioner including a drain pan that collects drain water dripped from a heat exchanger and a drain pump that discharges drain water in the drain pan, and the drain pump is operated by a timer during a predetermined period during operation of the air conditioner. An air conditioner that is operated by
JP2006066087A 2006-03-10 2006-03-10 Air conditioner Pending JP2007240112A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2006066087A JP2007240112A (en) 2006-03-10 2006-03-10 Air conditioner
US12/223,708 US20090084127A1 (en) 2006-03-10 2007-03-07 Air Conditioner
CN2007800059573A CN101384858B (en) 2006-03-10 2007-03-07 Air conditioner
KR1020087020218A KR100986869B1 (en) 2006-03-10 2007-03-07 Air conditioner
PCT/JP2007/054475 WO2007105571A1 (en) 2006-03-10 2007-03-07 Air conditioner
AU2007225863A AU2007225863B2 (en) 2006-03-10 2007-03-07 Air conditioner
EP07737988.1A EP1995526A4 (en) 2006-03-10 2007-03-07 Air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006066087A JP2007240112A (en) 2006-03-10 2006-03-10 Air conditioner

Publications (1)

Publication Number Publication Date
JP2007240112A true JP2007240112A (en) 2007-09-20

Family

ID=38509400

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006066087A Pending JP2007240112A (en) 2006-03-10 2006-03-10 Air conditioner

Country Status (7)

Country Link
US (1) US20090084127A1 (en)
EP (1) EP1995526A4 (en)
JP (1) JP2007240112A (en)
KR (1) KR100986869B1 (en)
CN (1) CN101384858B (en)
AU (1) AU2007225863B2 (en)
WO (1) WO2007105571A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013170703A (en) * 2012-02-17 2013-09-02 Rinnai Corp Drain discharge device
CN107120793A (en) * 2017-05-05 2017-09-01 广东美的暖通设备有限公司 Convertible frequency air-conditioner and its frequency-variable module radiator condensation prevention control method
CN108168045A (en) * 2017-12-06 2018-06-15 北京天诚同创电气有限公司 Air conditioner temperature controlling method, device and liquid chilling air conditioning system
CN113531750A (en) * 2021-06-28 2021-10-22 青岛海尔空调器有限总公司 Method and device for controlling water washing air conditioner, water washing air conditioner and storage medium
JP2021188875A (en) * 2020-06-04 2021-12-13 パナソニックＩｐマネジメント株式会社 Air conditioner

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7895849B2 (en) * 2008-07-03 2011-03-01 New Widetech Industries Co., Ltd. Dehumidifier with multistage draining
JP2010164255A (en) * 2009-01-16 2010-07-29 Mitsubishi Electric Corp Air conditioner
JP5568046B2 (en) * 2011-03-30 2014-08-06 日立アプライアンス株式会社 Air conditioner
US8946921B2 (en) 2011-04-12 2015-02-03 Plexaire, Llc Pressure powered impeller system and related method of use
WO2014078428A1 (en) 2012-11-13 2014-05-22 Plexaire Llc Condensate management system and methods
CN102954009A (en) * 2012-11-22 2013-03-06 无锡惠山泵业有限公司 Drainage pump of air conditioner
JP5542901B2 (en) * 2012-11-22 2014-07-09 三菱電機株式会社 Air conditioner
KR102480314B1 (en) * 2015-06-23 2022-12-23 삼성전자주식회사 A drain hose and air conditioner comprising the same
CN105371470B (en) * 2015-10-09 2019-01-29 珠海格力电器股份有限公司 Air conditioner drainage system and method
US10514196B2 (en) 2017-01-18 2019-12-24 Carrier Corporation Condensate drain pan port
CN109084462A (en) * 2018-07-23 2018-12-25 珠海格力电器股份有限公司 Drainage device, drainage control method and device
FR3084734B1 (en) * 2018-08-03 2021-01-15 Sauermann Ind CONDENSATE LIFT DEVICE INCLUDING A MOBILE CONDENSATE RECEPTION TANK, OR MOUNTED ON A MOBILE SUPPORT, IN TRANSLATION AND / OR ROTATION
US11231211B2 (en) * 2019-04-02 2022-01-25 Johnson Controls Technology Company Return air recycling system for an HVAC system
KR20210121850A (en) * 2020-03-31 2021-10-08 엘지전자 주식회사 Heat pump and method thereof
CN112577170A (en) * 2020-12-15 2021-03-30 佛山市顺德区美的电子科技有限公司 Control method and device for air conditioner water pump, air conditioner and storage medium
KR20240082540A (en) * 2022-12-02 2024-06-11 엘지전자 주식회사 Air Conditioner
EP4394263A1 (en) * 2022-12-26 2024-07-03 LG Electronics Inc. Air conditioner

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0625590U (en) * 1992-09-03 1994-04-08 愛知電機株式会社 Drain pump for air conditioner
JPH07145986A (en) * 1993-09-30 1995-06-06 Mitsubishi Electric Corp Drain pump control device for air-conditioner
JPH07167482A (en) * 1993-12-14 1995-07-04 Matsushita Electric Ind Co Ltd Drain pump controller of air conditioner
JPH07293946A (en) * 1994-04-27 1995-11-10 Mitsubishi Electric Corp Controller for ice water using air conditioner, blockage preventive device and blockage eliminating device
JPH0849669A (en) * 1994-08-09 1996-02-20 Ebara Corp Pump two-stage flow rate control method
JPH109649A (en) * 1996-06-25 1998-01-16 Matsushita Refrig Co Ltd Controller for drain pump of air conditioner
JP2003139344A (en) * 2001-11-05 2003-05-14 Saginomiya Seisakusho Inc Drain pump for air conditioner and its control method
JP2004076628A (en) * 2002-08-13 2004-03-11 Saginomiya Seisakusho Inc Drainage pump for air-conditioning equipment
JP2005283057A (en) * 2004-03-31 2005-10-13 Hitachi Ltd Air conditioner with drainage device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4869075A (en) * 1987-11-16 1989-09-26 Sanyo Electric Co., Ltd. Air conditioner
CN2515589Y (en) * 2001-12-21 2002-10-09 海信集团有限公司 Panel air conditioner
CN1428573A (en) * 2001-12-28 2003-07-09 海尔集团公司 High-lift water-discharged wall hanging air conditioner
JP2004053398A (en) 2002-07-19 2004-02-19 Canon Inc Temperature detector, image heating device, and image forming apparatus
JP3754415B2 (en) * 2002-12-25 2006-03-15 孝生 余語 Air conditioner drain water heating device
CN2639784Y (en) * 2003-08-20 2004-09-08 黄裕达 Air conditioner condensed water discharging device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0625590U (en) * 1992-09-03 1994-04-08 愛知電機株式会社 Drain pump for air conditioner
JPH07145986A (en) * 1993-09-30 1995-06-06 Mitsubishi Electric Corp Drain pump control device for air-conditioner
JPH07167482A (en) * 1993-12-14 1995-07-04 Matsushita Electric Ind Co Ltd Drain pump controller of air conditioner
JPH07293946A (en) * 1994-04-27 1995-11-10 Mitsubishi Electric Corp Controller for ice water using air conditioner, blockage preventive device and blockage eliminating device
JPH0849669A (en) * 1994-08-09 1996-02-20 Ebara Corp Pump two-stage flow rate control method
JPH109649A (en) * 1996-06-25 1998-01-16 Matsushita Refrig Co Ltd Controller for drain pump of air conditioner
JP2003139344A (en) * 2001-11-05 2003-05-14 Saginomiya Seisakusho Inc Drain pump for air conditioner and its control method
JP2004076628A (en) * 2002-08-13 2004-03-11 Saginomiya Seisakusho Inc Drainage pump for air-conditioning equipment
JP2005283057A (en) * 2004-03-31 2005-10-13 Hitachi Ltd Air conditioner with drainage device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013170703A (en) * 2012-02-17 2013-09-02 Rinnai Corp Drain discharge device
CN107120793A (en) * 2017-05-05 2017-09-01 广东美的暖通设备有限公司 Convertible frequency air-conditioner and its frequency-variable module radiator condensation prevention control method
CN108168045A (en) * 2017-12-06 2018-06-15 北京天诚同创电气有限公司 Air conditioner temperature controlling method, device and liquid chilling air conditioning system
JP2021188875A (en) * 2020-06-04 2021-12-13 パナソニックＩｐマネジメント株式会社 Air conditioner
CN113531750A (en) * 2021-06-28 2021-10-22 青岛海尔空调器有限总公司 Method and device for controlling water washing air conditioner, water washing air conditioner and storage medium
CN113531750B (en) * 2021-06-28 2022-09-06 青岛海尔空调器有限总公司 Method and device for controlling water washing air conditioner, water washing air conditioner and storage medium

Also Published As

Publication number Publication date
US20090084127A1 (en) 2009-04-02
CN101384858A (en) 2009-03-11
AU2007225863B2 (en) 2010-03-04
WO2007105571A1 (en) 2007-09-20
AU2007225863A1 (en) 2007-09-20
EP1995526A1 (en) 2008-11-26
KR20080096551A (en) 2008-10-30
KR100986869B1 (en) 2010-10-08
CN101384858B (en) 2012-02-29
EP1995526A4 (en) 2013-10-30

Similar Documents

Publication Publication Date Title
JP2007240112A (en) Air conditioner
AU2003277529B2 (en) Drain water discharge structure for air conditioning apparatus
JP2008190851A (en) Dust removing device and method for heat exchanger in air conditioner outdoor unit
JP6113400B2 (en) Air conditioner
JP2014092351A (en) Air conditioner
JP4988618B2 (en) Air conditioner
JP2014092350A (en) Air conditioner
CN110500761B (en) Drainage method and device of air conditioning unit of raise boring machine and air conditioning unit of raise boring machine
JP2008025878A (en) Air conditioner
JP2007315723A (en) Air conditioner
JP6721060B2 (en) Air conditioner
JP2007255841A (en) Indoor unit of air conditioner
JP5599293B2 (en) Air conditioner
CN210861654U (en) Drainage device of courtyard machine air conditioning unit and courtyard machine air conditioning unit
JP7325934B2 (en) Clogging suppression control device for drain pump, air conditioner, and clogging suppression control method for drain pump
CN209910053U (en) Mobile air conditioner
JPWO2004053398A1 (en) Air conditioner
JP6698221B1 (en) Air conditioner
JP2014055681A (en) Air cleaner
JP7474922B2 (en) Air conditioners
JP2006322677A (en) Antibacterial material and device comprising the same
JP6579826B2 (en) Air conditioner
JP2006275453A (en) Air conditioner and air conditioning method
JP2021188875A (en) Air conditioner
JP2004205132A (en) Air conditioner

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20081218

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110419

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20110816