JPH11211183A - Operation control device for air conditioner - Google Patents
Operation control device for air conditionerInfo
- Publication number
- JPH11211183A JPH11211183A JP10010562A JP1056298A JPH11211183A JP H11211183 A JPH11211183 A JP H11211183A JP 10010562 A JP10010562 A JP 10010562A JP 1056298 A JP1056298 A JP 1056298A JP H11211183 A JPH11211183 A JP H11211183A
- Authority
- JP
- Japan
- Prior art keywords
- control device
- power supply
- operation control
- outdoor unit
- indoor units
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は複数の室内機を具備
した空気調和機の運転制御装置、特に、その消費電力の
効果的制御が可能な空気調和機の運転制御装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control device for an air conditioner having a plurality of indoor units, and more particularly to an operation control device for an air conditioner capable of effectively controlling its power consumption.
【０００２】[0002]
【従来の技術】以下従来の空気調和機の運転制御装置に
ついて図面を参照しながら説明する。図７は従来の空気
調和機の運転制御装置の電源回路構成の一例を示すブロ
ック図、図８は図７に示す電源回路における電流波形を
示す波形図、図９は従来の空気調和機の運転制御装置の
電源回路構成の他の例を示すブロック図である。図７に
おいて、１は電源、２は運転制御装置、３は電源位相制
御装置で、運転制御装置２によって制御される位相制御
回路４と、これにより制御されるトライアック素子５か
ら構成されている。６はダイオード、７は電解コンデン
サであり、運転制御装置２の電源回路はこの電解コンデ
ンサ７の直流電源を電源とするスイッチング電源回路で
構成されている。なお、運転制御装置２は室内機と室外
機に個別に設けられる。2. Description of the Related Art A conventional air conditioner operation control device will be described below with reference to the drawings. 7 is a block diagram showing an example of a power supply circuit configuration of a conventional air conditioner operation control device, FIG. 8 is a waveform diagram showing current waveforms in the power supply circuit shown in FIG. 7, and FIG. 9 is an operation of the conventional air conditioner. FIG. 9 is a block diagram illustrating another example of the power supply circuit configuration of the control device. In FIG. 7, reference numeral 1 denotes a power supply, 2 denotes an operation control device, and 3 denotes a power supply phase control device, which comprises a phase control circuit 4 controlled by the operation control device 2 and a triac element 5 controlled by the phase control circuit. Reference numeral 6 denotes a diode, and reference numeral 7 denotes an electrolytic capacitor. The power supply circuit of the operation control device 2 includes a switching power supply circuit using a DC power supply of the electrolytic capacitor 7 as a power supply. The operation control device 2 is provided separately for the indoor unit and the outdoor unit.
【０００３】その動作としては、まず、通常負荷時、電
源１，トライアック素子５，ダイオード６の回路に流れ
る電流ｉは常時定格電流となるように制御されるが、運
転待機時などの軽消費電力時においては例えば図８に示
すように１８０度通電を行うことにより、電解コンデン
サ７の直流電源電圧を等価的に半値に制御して消費電力
の低減を図っていた。The operation is as follows. First, at normal load, the current i flowing through the circuit of the power supply 1, the triac element 5, and the diode 6 is controlled so as to always become a rated current. At the time, for example, as shown in FIG. 8, by carrying out the 180-degree conduction, the DC power supply voltage of the electrolytic capacitor 7 is equivalently controlled to a half value to reduce the power consumption.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな構成では、運転制御装置２の電源回路ごとに電源位
相制御装置が必要となり、例えば、図９に示すような室
内機２台と室外機から構成される装置に対して前記の回
路構成を適用しようとすると、運転制御装置２が３台あ
るので、電源位相制御装置も３台必要となり、コスト，
サイズ，信頼性，制御が複雑になるという問題点があっ
た。However, in such a configuration, a power phase control device is required for each power circuit of the operation control device 2. For example, two indoor units and an outdoor unit as shown in FIG. If the above circuit configuration is applied to a device to be configured, since three operation control devices 2 are provided, three power supply phase control devices are required, and cost and cost are reduced.
There was a problem that size, reliability, and control became complicated.
【０００５】本発明は上記従来の問題点を解決するもの
であり、簡易な構成で運転制御装置の待機時の消費電力
の効果的制御を行うことができる空気調和機の運転制御
装置を提供することを目的とするものである。The present invention solves the above-mentioned conventional problems, and provides an air conditioner operation control device capable of effectively controlling the power consumption of the operation control device during standby with a simple configuration. The purpose is to do so.
【０００６】[0006]
【課題を解決するための手段】本発明の空気調和機の運
転制御装置は、運転制御装置を個別に有する室外機及び
複数台の室内機と、前記室外機の運転制御装置により制
御される電源位相制御装置と、前記電源位相制御装置を
介して前記室外機及び複数台の室内機の各運転制御装置
に接続される電源を備えたものである。An operation control device for an air conditioner according to the present invention comprises an outdoor unit and a plurality of indoor units each having an operation control device individually, and a power supply controlled by the operation control device for the outdoor unit. A phase control device; and a power supply connected to the operation control devices of the outdoor unit and the plurality of indoor units via the power supply phase control device.
【０００７】この発明によれば、簡易な構成で待機時に
おける運転制御装置の消費電力を効果的に低減すること
ができる。According to the present invention, it is possible to effectively reduce the power consumption of the operation control device during standby with a simple configuration.
【０００８】[0008]
【発明の実施の形態】以下、本発明の各実施の形態につ
いて図面を参照しながら説明する。なお、前記従来のも
のと同一の部分については同一の符号を付し、その詳細
な説明は省略する。Embodiments of the present invention will be described below with reference to the drawings. The same parts as those of the conventional one are denoted by the same reference numerals, and detailed description thereof will be omitted.
【０００９】（実施の形態１）一般にスイッチング電源
回路においては負荷電力が少ないと一次側のスイッチン
グ素子のスイッチング幅が狭くなるが、その際、一次電
圧が高いままであるとスイッチング損失が増加する。こ
れはスイッチング損失は電圧と電流の時間積であるため
で、場合によっては二次側に消費する電力量よりも一次
側のスイッチング損失の方が大きくなることもある。そ
こで、負荷電力が少ないときには一次電源電圧を低下さ
せスイッチング幅を広げてスイッチング損失を減少させ
ることが一般に知られており、以下の実施の形態におい
てもこの点を参酌している。(Embodiment 1) In general, in a switching power supply circuit, the switching width of a primary-side switching element becomes narrower when the load power is small, but the switching loss increases when the primary voltage remains high. This is because the switching loss is a time product of the voltage and the current, and in some cases, the switching loss on the primary side is larger than the amount of power consumed on the secondary side. Therefore, it is generally known that when the load power is small, the primary power supply voltage is reduced to widen the switching width to reduce the switching loss, and this point is also taken into consideration in the following embodiments.
【００１０】また、空気調和機における室内機の待機状
態は、リモコンからの運転信号を受信するための待ち状
態であり、マイコン及びごく一部の周辺回路のみが動作
している状態であるのに対して、通常運転状態は送風機
が運転し、かつ風向制御モータも運転する等、待機状態
と比べると大きな電力差となっており、この点も考慮す
る必要がある。The standby state of the indoor unit in the air conditioner is a standby state for receiving an operation signal from the remote controller, and is a state in which only the microcomputer and a part of peripheral circuits are operating. On the other hand, in the normal operation state, the blower is operated, and the wind direction control motor is also operated. For example, the power difference is larger than that in the standby state, and it is necessary to consider this point.
【００１１】図１は本発明の空気調和機の運転制御装置
の実施の形態１における電源回路構成を示すブロック
図、図２は図１に示す電源回路における電流波形を示す
波形図であり、室外機１台、室内機２台からなる製品構
成のものを示している。図１において、室外機に電源１
から一旦受電した電流は、室外機の運転制御装置２ａに
よって制御される電源位相制御装置３により位相制御さ
れている。室内機の電力負荷が少ない時には、電源位相
制御装置３のトライアック素子５の通電位相は図２のよ
うに１８０度通電に制限され、電解コンデンサ７ａ，７
ｂ，７ｃの両端電圧を制限する。また、室内機の電力負
荷が多いときには、通電位相を広げることにより、電解
コンデンサ７ａ，７ｂ，７ｃの両端電圧を上昇させる。
この室内機の電力負荷の変化は特に電流センサなどを設
けることなく、室外機においては、室内機からの圧縮機
運転制御情報などを用いることにより容易に判定できる
ものである。このようにして位相制御された電源１から
の電力は室外機１台、室内機２台の各々に装備された運
転制御装置２ａ，２ｂ，２ｃのすべてに供給され、電力
負荷の変動に対応するように動作する。FIG. 1 is a block diagram showing the configuration of a power supply circuit in an air conditioner operation control device according to a first embodiment of the present invention. FIG. 2 is a waveform diagram showing current waveforms in the power supply circuit shown in FIG. This shows a product configuration including one unit and two indoor units. In FIG. 1, the power supply 1 is connected to the outdoor unit.
The phase of the current once received from is controlled by the power supply phase control device 3 controlled by the operation control device 2a of the outdoor unit. When the power load of the indoor unit is small, the conduction phase of the triac element 5 of the power supply phase control device 3 is limited to 180 degrees conduction as shown in FIG.
b, 7c are limited. Further, when the power load of the indoor unit is large, the voltage across the electrolytic capacitors 7a, 7b, 7c is increased by extending the energization phase.
The change in the electric power load of the indoor unit can be easily determined in the outdoor unit without using a current sensor or the like by using compressor operation control information from the indoor unit. The power from the power source 1 thus phase-controlled is supplied to all of the operation control devices 2a, 2b, and 2c provided in each of the one outdoor unit and the two indoor units, and responds to fluctuations in the power load. Works like that.
【００１２】以上のように本実施の形態によれば、室外
機に具備した単一の電源位相制御装置を介して、室外機
及びそれぞれの室内機の電源を同時に供給することによ
り、簡易な構成で待機時の消費電力を効果的に制御する
ことができる。As described above, according to the present embodiment, the power supply of the outdoor unit and the respective indoor units is simultaneously supplied via the single power supply phase control device provided in the outdoor unit, thereby achieving a simple configuration. Thus, power consumption during standby can be effectively controlled.
【００１３】（実施の形態２）図３は本発明の空気調和
機の運転制御装置の実施の形態２における電源回路構成
を示すブロック図、図４は図３に示す電源回路における
電流波形を示す波形図であり、室外機１台、室内機２台
からなる製品構成のものを示している。図３において、
それぞれの室内機の運転制御装置２ｂ，２ｃの電源回路
は、電源１と、その電流を位相制御する電源位相制御装
置３ｂ，３ｃと、ダイオード６ｂ，６ｃにより構成され
ている。この回路の電源電流は、室外の運転制御装置２
ａからの信号に基づき電源位相制御装置３ｂ，３ｃのト
ライアック素子５ｂ，５ｃにより制御されるものであ
る。ここで、位相制御回路４ｃは、信号反転回路８を介
して接続されているために、図４（ａ）に示す室内機−
１の回路電流ｉ1と、同図（ｂ）に示す室内機−２の回
路電流ｉ2とは、基本的に位相が反転したものとなるの
で、位相制御が１８０度なされているとすると、両者の
和（ｉ1＋ｉ2）である電流ｉは同図（ｃ）に示すように
ほぼ３６０度連続した電流波形となり、力率及び電源高
調波の低減に効果がある。(Embodiment 2) FIG. 3 is a block diagram showing a power supply circuit configuration of an air conditioner operation control device according to Embodiment 2 of the present invention, and FIG. 4 shows a current waveform in the power supply circuit shown in FIG. FIG. 4 is a waveform diagram showing a product configuration including one outdoor unit and two indoor units. In FIG.
The power supply circuit of the operation control devices 2b and 2c of each indoor unit includes the power supply 1, power supply phase control devices 3b and 3c for controlling the phase of the current, and diodes 6b and 6c. The power supply current of this circuit is controlled by the outdoor operation controller 2
This is controlled by the triac elements 5b and 5c of the power supply phase controllers 3b and 3c based on the signal from a. Here, since the phase control circuit 4c is connected via the signal inversion circuit 8, the indoor unit shown in FIG.
A circuit current i 1 of 1, the circuit current i 2 of the indoor unit -2 shown in FIG. (B), since basically the phase is an inversion, when the phase control is made 180 degrees, The current i, which is the sum of the two (i 1 + i 2 ), has a current waveform that is substantially continuous at 360 degrees as shown in FIG. 3C, and is effective in reducing the power factor and power supply harmonics.
【００１４】以上のように本実施の形態によれば、実施
の形態１と同様、待機時などの低負荷時の消費電力の低
減化を図ることができることは勿論、さらに力率及び電
源高調波の低減に効果があるものである。As described above, according to the present embodiment, similarly to the first embodiment, it is possible to reduce the power consumption at the time of a low load such as at the time of standby, as well as to further reduce the power factor and the power supply harmonics. It is effective in reducing the amount.
【００１５】（実施の形態３）図５は本発明の空気調和
機の運転制御装置の実施の形態３における電源回路の基
本構成を示すブロック図、図６は図５に示す電源回路の
具体例を示すブロック図である。本実施の形態は図５に
その基本構成を示すように、待機時などの低負荷時には
室外機及び室内機−１，室内機−２の運転制御装置２
ａ，２ｂ，２ｃを電源１に対して直列接続することによ
り、それぞれに印加される電圧を１／３として電解コン
デンサ７ａ，７ｂ，７ｃに発生する電圧を低下させるよ
うにしたものである。通常負荷時には室外機及び室内機
−１，２の運転制御装置２ａ，２ｂ，２ｃを電源１に並
列接続することにより、通常の電力を得るものであり、
その具体的切換え回路を図６に示す。図６において、９
はリレー群で４個のリレー回路９ａ，９ｂ，９ｃ，９ｄ
から構成され、前記の並列接続と直列接続を切り替える
回路を構成している。今、リレー回路９ａ，９ｂ，９
ｃ，９ｄによる切換え位置が図示の状態にある通常状態
（運転状態）では、運転制御装置２ａ，２ｂ，２ｃが電
源１に対して並列に接続されているが、このリレー回路
９ａ，９ｂ，９ｃ，９ｄを図示と反対の位置に切り替え
ることにより、直列接続に切り替えることができる。(Embodiment 3) FIG. 5 is a block diagram showing a basic configuration of a power supply circuit in an air conditioner operation control apparatus according to Embodiment 3 of the present invention, and FIG. 6 is a specific example of the power supply circuit shown in FIG. FIG. In this embodiment, as shown in FIG. 5, the operation control device 2 of the outdoor unit and the indoor unit-1 and the indoor unit-2 at the time of a low load such as a standby state.
By connecting a, 2b and 2c in series with the power supply 1, the voltage applied to each of them is reduced to 1/3 and the voltage generated in the electrolytic capacitors 7a, 7b and 7c is reduced. At the time of normal load, normal power is obtained by connecting the operation control devices 2a, 2b, and 2c of the outdoor unit and the indoor units-1 and 2 in parallel to the power supply 1.
FIG. 6 shows a specific switching circuit. In FIG. 6, 9
Is a relay group consisting of four relay circuits 9a, 9b, 9c, 9d
And a circuit for switching between the parallel connection and the series connection. Now, the relay circuits 9a, 9b, 9
In the normal state (operating state) where the switching position by c, 9d is in the state shown in the figure, the operation control devices 2a, 2b, 2c are connected in parallel to the power supply 1, but the relay circuits 9a, 9b, 9c , 9d can be switched to the series connection by switching to the opposite position as shown.
【００１６】以上のように本実施の形態によれば、電源
と室外機及びそれぞれの室内機の電源回路を電源切り替
え回路を介して接続し、待機時などの軽消費電力時には
室外機と各室内機を直列接続運転することにより、より
簡易にかつ信頼性の高い状態で待機時の消費電力を低減
できる。なお、回路の切り替えはリレー回路を用いず
に、半導体素子などでも実現することが可能である。As described above, according to the present embodiment, the power supply is connected to the outdoor unit and the power supply circuit of each indoor unit via the power supply switching circuit. By connecting the machines in series, the power consumption during standby can be reduced more easily and more reliably. Note that switching of the circuit can be realized by a semiconductor element or the like without using a relay circuit.
【００１７】なお、上記各実施の形態においては、室外
機１台、室内機２台の構成例について説明したが、室内
機を３台以上としたものにおいても同様の効果を得るこ
とができる。In each of the above embodiments, a configuration example of one outdoor unit and two indoor units has been described. However, a similar effect can be obtained with three or more indoor units.
【００１８】[0018]
【発明の効果】以上のように本発明によれば、簡易な構
成で運転制御装置の待機時の消費電力の効果的制御を行
うことができるという有利な効果が得られる。As described above, according to the present invention, the advantageous effect that effective control of power consumption during standby of the operation control device can be performed with a simple configuration can be obtained.
【図１】本発明の空気調和機の運転制御装置の実施の形
態１における電源回路構成を示すブロック図FIG. 1 is a block diagram showing a power supply circuit configuration in Embodiment 1 of an operation control device for an air conditioner of the present invention.
【図２】本発明の空気調和機の運転制御装置の実施の形
態１における図１の電源回路の電流波形を示す波形図FIG. 2 is a waveform diagram showing a current waveform of the power supply circuit of FIG. 1 in the first embodiment of the operation control device for an air conditioner of the present invention.
【図３】本発明の空気調和機の運転制御装置の実施の形
態２における電源回路構成を示すブロック図FIG. 3 is a block diagram illustrating a power supply circuit configuration according to Embodiment 2 of the air conditioner operation control device of the present invention.
【図４】本発明の空気調和機の運転制御装置の実施の形
態２における図３の電源回路の電流波形を示す波形図FIG. 4 is a waveform diagram showing a current waveform of the power supply circuit of FIG. 3 in the air conditioner operation control apparatus according to Embodiment 2 of the present invention.
【図５】本発明の空気調和機の運転制御装置の実施の形
態３における電源回路の基本構成を示すブロック図FIG. 5 is a block diagram showing a basic configuration of a power supply circuit in Embodiment 3 of the operation control device for an air conditioner of the present invention.
【図６】本発明の空気調和機の運転制御装置の実施の形
態３における図５の電源回路の具体例を示すブロック図FIG. 6 is a block diagram showing a specific example of the power supply circuit of FIG. 5 in Embodiment 3 of the operation control device for an air conditioner of the present invention.
【図７】従来の空気調和機の運転制御装置の電源回路構
成の一例を示すブロック図FIG. 7 is a block diagram showing an example of a power supply circuit configuration of a conventional operation control device for an air conditioner.
【図８】従来の空気調和機の運転制御装置の図７に示す
電源回路における電流波形を示す波形図8 is a waveform diagram showing a current waveform in the power supply circuit shown in FIG. 7 of the conventional operation control device for an air conditioner.
【図９】従来の空気調和機の運転制御装置の電源回路構
成の他の例を示すブロック図FIG. 9 is a block diagram showing another example of a power supply circuit configuration of a conventional operation control device for an air conditioner.
【符号の説明】 １ 電源 ２ 運転制御装置 ３ 電源位相制御装置 ４ 位相制御回路 ５ トライアック素子 ６ ダイオード ７ 電解コンデンサ ８ 信号反転回路 ９ リレー群[Description of Signs] 1 power supply 2 operation control device 3 power supply phase control device 4 phase control circuit 5 triac element 6 diode 7 electrolytic capacitor 8 signal inversion circuit 9 relay group
Claims (3)
複数台の室内機と、前記室外機の運転制御装置により制
御される電源位相制御装置と、前記電源位相制御装置を
介して前記室外機及び複数台の室内機の各運転制御装置
に接続される電源を備えたことを特徴とする空気調和機
の運転制御装置。An outdoor unit and a plurality of indoor units each having an operation control device individually, a power supply phase control device controlled by an operation control device of the outdoor unit, and the outdoor unit via the power supply phase control device An operation control device for an air conditioner, comprising a power supply connected to each operation control device of a plurality of indoor units.
複数台の室内機と、前記室外機の運転制御装置により制
御される電源位相制御装置と、前記電源位相制御装置を
介して前記複数台の室内機の各運転制御装置に接続され
る電源を備え、通常時には室外機及び複数台の室内機の
運転制御装置と電源を並列接続し、軽消費電力時には複
数の室内機の電力通電を交互に位相制御することを特徴
とする空気調和機の運転制御装置。2. An outdoor unit and a plurality of indoor units each having an operation control device individually, a power supply phase control device controlled by an operation control device of the outdoor unit, and the plurality of indoor units via the power supply phase control device. A power supply connected to each operation control device of the indoor unit is provided.In normal times, the operation control devices of the outdoor unit and the plurality of indoor units are connected in parallel with the power supply. An operation control device for an air conditioner, comprising:
複数台の室内機と、前記室外機及び複数台の室内機の運
転制御装置に電源切り替え回路を介して接続される電源
を備え、通常運転時には室外機及び複数台の室内機の各
運転制御装置を電源に対して並列接続し、軽消費電力時
にはこれら運転制御装置を直列接続することを特徴とす
る空気調和機の運転制御装置。An outdoor unit and a plurality of indoor units each having an operation control device individually, and a power supply connected to the operation control device of the outdoor unit and the plurality of indoor units via a power supply switching circuit, An operation control device for an air conditioner, wherein operation control devices of an outdoor unit and a plurality of indoor units are connected in parallel to a power supply during operation, and these operation control devices are connected in series during light power consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01056298A JP3395883B2 (en) | 1998-01-22 | 1998-01-22 | Operation control device for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01056298A JP3395883B2 (en) | 1998-01-22 | 1998-01-22 | Operation control device for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11211183A true JPH11211183A (en) | 1999-08-06 |
| JP3395883B2 JP3395883B2 (en) | 2003-04-14 |
Family
ID=11753691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01056298A Expired - Fee Related JP3395883B2 (en) | 1998-01-22 | 1998-01-22 | Operation control device for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3395883B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0835713A (en) * | 1994-07-26 | 1996-02-06 | Fujitsu General Ltd | Air conditioner control method and device |
| JPH10205854A (en) * | 1997-01-28 | 1998-08-04 | Sharp Corp | Air conditioner |
| JPH11187575A (en) * | 1997-12-19 | 1999-07-09 | Toshiba Corp | Power supply device and air conditioner using the same |
-
1998
- 1998-01-22 JP JP01056298A patent/JP3395883B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0835713A (en) * | 1994-07-26 | 1996-02-06 | Fujitsu General Ltd | Air conditioner control method and device |
| JPH10205854A (en) * | 1997-01-28 | 1998-08-04 | Sharp Corp | Air conditioner |
| JPH11187575A (en) * | 1997-12-19 | 1999-07-09 | Toshiba Corp | Power supply device and air conditioner using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3395883B2 (en) | 2003-04-14 |
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