JPH109725A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH109725A JPH109725A JP16412596A JP16412596A JPH109725A JP H109725 A JPH109725 A JP H109725A JP 16412596 A JP16412596 A JP 16412596A JP 16412596 A JP16412596 A JP 16412596A JP H109725 A JPH109725 A JP H109725A
- Authority
- JP
- Japan
- Prior art keywords
- indoor
- defrosting
- heat exchanger
- unit
- defrosting operation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は空気調和機に関す
る。[0001] The present invention relates to an air conditioner.
【0002】[0002]
【従来の技術】従来の技術は、日立評論Vol.77,
No.886平成7年11月号9頁に記載のように、1台
の室外ユニットに対し1台の室内ユニットを組み合わせ
たシングル機,1台の室外ユニットに対し複数台の室内
ユニットを組み合わせたマルチ機が一般的である。2. Description of the Related Art Conventional technology is disclosed in Hitachi Review, Vol. 77,
No. 886, November 1995, page 9, single outdoor unit combined with one indoor unit, single outdoor unit combined with multiple indoor units Multi-machines are common.
【0003】[0003]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、室内ユニット内に2台の独立した熱交換器
と送風機をもち、各々の熱交換器に対応した室外ユニッ
トを接続した場合についてのものである。The problem to be solved by the present invention is that an indoor unit has two independent heat exchangers and a blower, and an outdoor unit corresponding to each heat exchanger is connected. Is about.
【0004】2台の室外ユニットが同時に除霜開始した
場合、室内ユニット内の熱交換器の蒸発作用により、空
気が冷され室内の人間に冷風感を与えてしまう。When the two outdoor units start defrosting at the same time, the air is cooled by the evaporative action of the heat exchanger in the indoor unit, giving a sense of cool air to a person in the room.
【0005】また、室内ユニット内の一つのサイクルを
暖房運転,一つのサイクルを除霜運転し、かつ、室内ユ
ニット内にある二つの送風機を一つの電動機にて制御し
た場合、二つの送風機は微風運転または停止する必要が
ある。その際、暖房運転中のサイクルの凝縮圧力が上昇
し、圧縮機内の電動機の加熱、さらには、冷凍機油の劣
化を招き、圧縮機の故障の原因となる。When one cycle in the indoor unit is operated for heating and one cycle is operated for defrosting, and two blowers in the indoor unit are controlled by one electric motor, the two blowers are driven by a weak wind. Need to run or stop. At this time, the condensing pressure of the cycle during the heating operation increases, which causes heating of the electric motor in the compressor and further deterioration of the refrigerating machine oil, which causes a failure of the compressor.
【0006】本発明の目的は、二つのサイクルの同時除
霜による冷風感の防止、および、1台除霜運転、1台暖
房運転中の暖房運転サイクルの信頼性を確保することに
ある。An object of the present invention is to prevent a feeling of cool air by simultaneous defrosting of two cycles, and to ensure the reliability of a heating operation cycle during one defrosting operation and one heating operation.
【0007】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明は室内送風機6を制御する室内電気箱4と室
内送風機7を制御する室内電気箱5を室内機ユニットに
取り付ける。According to the present invention, an indoor electric box 4 for controlling an indoor blower 6 and an indoor electric box 5 for controlling an indoor blower 7 are mounted on an indoor unit.
【0008】また、室外電気箱10と室外電気箱11と
を伝送線で結び制御信号をやり取りすることにより、除
霜運転を行う室外ユニットと暖房運転を行う室外ユニッ
トを判別させ、除霜運転を行う室外ユニットより除霜運
転を行う室内ユニットの電気箱へ制御信号を送り、除霜
運転する側の送風機のみ風量制御を行うものとする。Further, the outdoor electric box 10 and the outdoor electric box 11 are connected by a transmission line and control signals are exchanged, so that the outdoor unit performing the defrosting operation and the outdoor unit performing the heating operation are distinguished, and the defrosting operation is performed. The control signal is sent from the outdoor unit to the electric box of the indoor unit performing the defrosting operation, and only the blower on the side performing the defrosting operation controls the air volume.
【0009】[0009]
【発明の実施の形態】以下、本発明の一実施例を図1に
より説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
【0010】本発明にて開発した室内ユニット1は独立
したサイクル経路を持つ室内熱交換器2及び室内熱交換
器3を共通の架台に取り付け、各々の室内熱交換器に対
応した室外ユニット8及び室外ユニット9に接続する。
これにより、室外ユニットの容量制御,発停制御を行う
ことにより、様々な運転条件に対応することが可能とな
る。また、室外ユニットの発停制御のみにより、容易に
室内ユニット1の容量制御を行うことができる。The indoor unit 1 developed in the present invention has an indoor heat exchanger 2 and an indoor heat exchanger 3 having independent cycle paths mounted on a common base, and an outdoor unit 8 and an outdoor unit 8 corresponding to each indoor heat exchanger. Connect to outdoor unit 9.
Accordingly, by performing the capacity control and the start / stop control of the outdoor unit, it becomes possible to cope with various operating conditions. Further, the capacity control of the indoor unit 1 can be easily performed only by the start / stop control of the outdoor unit.
【0011】また、室内ユニット1内の室内熱交換器2
及び室内熱交換器3に対応した室内送風機6及び室内送
風機7を各々の室内熱交換器の前面に取り付け、室内電
気箱4及び室内電気箱5とを接続することにより、各々
の室内電気箱と接続された室外ユニット8及び室外ユニ
ット9より出力された除霜制御信号を受け取り、室内送
風機6及び室内送風機7を個別に制御することができ、
状況に応じた室内送風機の風量制御を行うことが可能と
なった。The indoor heat exchanger 2 in the indoor unit 1
The indoor blower 6 and the indoor blower 7 corresponding to the indoor heat exchanger 3 are attached to the front of each indoor heat exchanger, and the indoor electric boxes 4 and 5 are connected to each other. The defrost control signals output from the connected outdoor unit 8 and the outdoor unit 9 are received, and the indoor blower 6 and the indoor blower 7 can be individually controlled,
It became possible to control the air volume of the indoor blower according to the situation.
【0012】また、室外機電気箱10と室外機電気箱1
1とを伝送線で接続し、除霜運転情報等の情報を交換す
ることにより、同時に除霜運転に入らないよう制御する
ことが可能となった。Also, the outdoor unit electric box 10 and the outdoor unit electric box 1
1 is connected by a transmission line, and by exchanging information such as defrosting operation information, it has become possible to control not to enter the defrosting operation at the same time.
【0013】図2に本除霜制御のフローチャートを示
す。FIG. 2 shows a flowchart of the main defrost control.
【0014】暖房運転開始後、暖房運転積算時間等の時
間条件及び外気温度,配管温度等の温度条件により、除
霜開始条件を満たした場合、室外ユニットは除霜準備制
御に入る。除霜準備制御運転に入った室外ユニットの電
気箱から除霜開始条件が成立していない室外ユニットの
電気箱へ除霜運転禁止の信号を送り、除霜開始条件が成
立していない室外ユニットは以下に説明する除霜運転が
終了するまで、強制的に暖房運転を継続させる。その
際、暖房運転中の室内送風機風量は設定風量のままと
し、また、室外機ユニットの圧縮機をインバータにより
運転周波数を変動させることにより、暖房運転サイクル
の凝縮圧力上昇を防ぐ。次に、除霜準備運転中の室外ユ
ニットは、一定時間経過後、除霜運転に入る。除霜運転
に入った室外ユニットの送風機は停止し、室内機ユニッ
トの送風機は室外ユニットの種類により、停止または微
風運転を開始する。除霜を行う室外ユニットの熱交換器
より放出される凝縮熱により、室外ユニット内の熱交換
器に付着した霜の除霜を行う。除霜運転積算時間等の時
間条件及び配管温度、外気温度等の温度条件により、除
霜終了条件を満たした場合、室内送風機,室外送風機の
風量を設定風量に戻し、暖房運転に戻る。After the start of the heating operation, if the defrosting start condition is satisfied according to the time condition such as the accumulated time of the heating operation and the temperature condition such as the outside air temperature and the pipe temperature, the outdoor unit enters the defrosting preparation control. A signal to prohibit defrosting operation is sent from the electric box of the outdoor unit that has entered the defrost preparation control operation to the electric box of the outdoor unit for which the defrosting start condition has not been established. The heating operation is forcibly continued until the defrosting operation described below ends. At this time, the air flow rate of the indoor blower during the heating operation is kept at the set air flow rate, and the compressor of the outdoor unit is operated at a variable operating frequency by an inverter, thereby preventing a condensing pressure increase in the heating operation cycle. Next, the outdoor unit during the defrost preparation operation starts the defrost operation after a lapse of a predetermined time. The blower of the outdoor unit that has entered the defrosting operation stops, and the blower of the indoor unit stops or starts the breeze operation depending on the type of the outdoor unit. The defrosting of the frost adhering to the heat exchanger in the outdoor unit is performed by the heat of condensation released from the heat exchanger in the outdoor unit for defrosting. When the defrost ending condition is satisfied by the time condition such as the accumulated time of the defrosting operation and the temperature condition such as the pipe temperature and the outside air temperature, the air volume of the indoor blower and the outdoor blower is returned to the set air volume, and the operation returns to the heating operation.
【0015】前回と同様に時間条件及び温度条件によ
り、除霜開始条件を満たした室外ユニットは除霜準備制
御に入る。その際、前回除霜運転をしたユニットか、暖
房運転をしたユニットか室外機用電気箱間で情報を交換
することにより判別し、前回除霜運転をしたユニットは
暖房運転を続け、前回暖房運転をしたユニットは除霜準
備制御運転を継続する。除霜運転を開始し、除霜終了条
件を満たした場合、暖房運転に戻る。The outdoor unit that satisfies the defrost start condition based on the time condition and the temperature condition similarly to the previous time enters the defrost preparation control. At that time, it is determined by exchanging information between the unit that performed the previous defrost operation, the unit that performed the heating operation, and the electric box for the outdoor unit, and the unit that performed the previous defrost operation continues the heating operation, The unit that has performed the operation continues the defrost preparation control operation. The defrost operation is started, and when the defrost end condition is satisfied, the operation returns to the heating operation.
【0016】このような制御を繰り返し行うことによ
り、ユニットを停止するまで、除霜運転と暖房運転を交
互に行わせ、同時に除霜運転に入らないようにすること
が可能となった。By repeatedly performing such control, it becomes possible to alternately perform the defrosting operation and the heating operation until the unit is stopped, and not to enter the defrosting operation at the same time.
【0017】[0017]
【発明の効果】本発明によれば、除霜運転制御に入った
後、前回除霜運転をした室外ユニットか、暖房運転をし
た室外ユニットかを判断させ、複数台同時に除霜運転に
入らないように制御することにより、室内にいる人間等
に冷風感を与えず、暖房運転を続けることが可能とな
る。According to the present invention, after the defrosting operation control is started, it is determined whether the outdoor unit has been subjected to the previous defrosting operation or the outdoor unit which has been subjected to the heating operation. By performing such control, the heating operation can be continued without giving a feeling of cool air to a person or the like in the room.
【0018】また、一方の室外ユニットが除霜運転をす
る際において、暖房運転を継続する室外ユニットに接続
された室内ユニット内の送風機を通常運転状態の設定風
量に保つことにより、また、室外機の圧縮機の運転周波
数を変動させることにより、暖房運転サイクルの凝縮圧
力上昇を防ぐことが可能となり、圧縮機の故障を抑制で
き、サイクルの信頼性の確保を図ることができる。Further, when one of the outdoor units performs the defrosting operation, the blower in the indoor unit connected to the outdoor unit that continues the heating operation is maintained at the set airflow in the normal operation state. By changing the operating frequency of the compressor, it is possible to prevent an increase in the condensing pressure in the heating operation cycle, to suppress the failure of the compressor, and to ensure the reliability of the cycle.
【図1】本発明の一実施例を示す室内ユニットと室外ユ
ニットの接続例の説明図。FIG. 1 is an explanatory diagram of a connection example of an indoor unit and an outdoor unit according to an embodiment of the present invention.
【図2】図1の実施例に対応する除霜制御のフローチャ
ート。FIG. 2 is a flowchart of defrost control corresponding to the embodiment of FIG.
1…室内ユニット、2,3…室内熱交換器、4,5…室
内電気箱、6,7…室内送風機、8,9…室外ユニッ
ト、10,11…室外電気箱。DESCRIPTION OF SYMBOLS 1 ... Indoor unit, 2, 3 ... Indoor heat exchanger, 4, 5 ... Indoor electric box, 6, 7 ... Indoor blower, 8, 9 ... Outdoor unit, 10, 11 ... Outdoor electric box.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 鈴木 文男 静岡県清水市村松390番地 株式会社日立 製作所空調システム事業部内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Fumio Suzuki 390 Muramatsu, Shimizu-shi, Shizuoka Prefecture Air Conditioning Systems Division, Hitachi, Ltd.
Claims (1)
気調和機において、1台もしくは、一方の空気調和機が
除霜運転を開始した際に、他の空気調和機が除霜運転に
入らないようにすることを特徴とする空気調和機。In a plurality of independent air conditioners having the same air conditioning target, when one or one of the air conditioners starts a defrosting operation, another air conditioner switches to a defrosting operation. An air conditioner characterized by preventing entry.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16412596A JPH109725A (en) | 1996-06-25 | 1996-06-25 | Air conditioner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16412596A JPH109725A (en) | 1996-06-25 | 1996-06-25 | Air conditioner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH109725A true JPH109725A (en) | 1998-01-16 |
Family
ID=15787228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16412596A Pending JPH109725A (en) | 1996-06-25 | 1996-06-25 | Air conditioner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH109725A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011086979A1 (en) | 2010-01-14 | 2011-07-21 | 三菱重工業株式会社 | Air conditioner |
US8306667B2 (en) | 2008-11-17 | 2012-11-06 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
WO2012168971A1 (en) * | 2011-06-08 | 2012-12-13 | 三菱電機株式会社 | Refrigeration air-conditioning device |
WO2015025342A1 (en) * | 2013-08-22 | 2015-02-26 | 三菱電機株式会社 | Indoor unit for air conditioner |
US20150246594A1 (en) * | 2012-09-18 | 2015-09-03 | Denso Corporation | Air conditioner for vehicle |
EP2615389A4 (en) * | 2010-09-09 | 2016-03-09 | Panasonic Corp | Air conditioning apparatus |
JP2016041988A (en) * | 2014-08-18 | 2016-03-31 | 株式会社クボタ | Heat pump type air-conditioner |
KR20170111092A (en) * | 2016-03-25 | 2017-10-12 | 엘지전자 주식회사 | An air conditioner and method for controlling it |
CN108397855A (en) * | 2018-03-20 | 2018-08-14 | 广东美的制冷设备有限公司 | Air conditioner malfunction detection method, detection device, air conditioner and storage medium |
JPWO2021065397A1 (en) * | 2019-09-30 | 2021-04-08 |
-
1996
- 1996-06-25 JP JP16412596A patent/JPH109725A/en active Pending
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8306667B2 (en) | 2008-11-17 | 2012-11-06 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
WO2011086979A1 (en) | 2010-01-14 | 2011-07-21 | 三菱重工業株式会社 | Air conditioner |
EP2525160A4 (en) * | 2010-01-14 | 2018-03-14 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Air conditioner |
EP2615389A4 (en) * | 2010-09-09 | 2016-03-09 | Panasonic Corp | Air conditioning apparatus |
JPWO2012168971A1 (en) * | 2011-06-08 | 2015-02-23 | 三菱電機株式会社 | Refrigeration air conditioner |
US9726420B2 (en) | 2011-06-08 | 2017-08-08 | Mitsubishi Electric Corporation | Apparatus for defrosting a plurality of heat exchangers having a common outdoor fan |
WO2012168971A1 (en) * | 2011-06-08 | 2012-12-13 | 三菱電機株式会社 | Refrigeration air-conditioning device |
EP2719966A4 (en) * | 2011-06-08 | 2015-03-25 | Mitsubishi Electric Corp | Refrigeration air-conditioning device |
EP2719966A1 (en) * | 2011-06-08 | 2014-04-16 | Mitsubishi Electric Corporation | Refrigeration air-conditioning device |
CN103597291A (en) * | 2011-06-08 | 2014-02-19 | 三菱电机株式会社 | Refrigeration air-conditioning device |
CN103597291B (en) * | 2011-06-08 | 2017-03-01 | 三菱电机株式会社 | refrigerating air conditioning device |
US20150246594A1 (en) * | 2012-09-18 | 2015-09-03 | Denso Corporation | Air conditioner for vehicle |
JP6038328B2 (en) * | 2013-08-22 | 2016-12-07 | 三菱電機株式会社 | Air conditioner indoor unit |
WO2015025342A1 (en) * | 2013-08-22 | 2015-02-26 | 三菱電機株式会社 | Indoor unit for air conditioner |
US10473340B2 (en) | 2013-08-22 | 2019-11-12 | Mitsubishi Electric Corporation | Indoor unit for air-conditioning apparatus |
JP2016041988A (en) * | 2014-08-18 | 2016-03-31 | 株式会社クボタ | Heat pump type air-conditioner |
KR20170111092A (en) * | 2016-03-25 | 2017-10-12 | 엘지전자 주식회사 | An air conditioner and method for controlling it |
CN108397855A (en) * | 2018-03-20 | 2018-08-14 | 广东美的制冷设备有限公司 | Air conditioner malfunction detection method, detection device, air conditioner and storage medium |
CN108397855B (en) * | 2018-03-20 | 2020-05-05 | 广东美的制冷设备有限公司 | Air conditioner fault detection method and device, air conditioner and storage medium |
JPWO2021065397A1 (en) * | 2019-09-30 | 2021-04-08 | ||
WO2021065397A1 (en) * | 2019-09-30 | 2021-04-08 | ダイキン工業株式会社 | Solid-state refrigeration device |
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