JPH0355729B2 - - Google Patents
Info
- Publication number
- JPH0355729B2 JPH0355729B2 JP58005475A JP547583A JPH0355729B2 JP H0355729 B2 JPH0355729 B2 JP H0355729B2 JP 58005475 A JP58005475 A JP 58005475A JP 547583 A JP547583 A JP 547583A JP H0355729 B2 JPH0355729 B2 JP H0355729B2
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- indoor
- room temperature
- units
- indoor unit
- 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.)
- Expired - Lifetime
Links
- 239000003507 refrigerant Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 230000001143 conditioned effect Effects 0.000 description 17
- 230000000694 effects Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- 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
Description
【発明の詳細な説明】
［発明の技術分野］
本発明は、複数の空調室に配設される複数の室
内ユニツトを備えた、いわゆるマルチタイプの空
気調和機に係り、特に上記圧縮機の運転制御方法
の改良に関する。Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a so-called multi-type air conditioner equipped with a plurality of indoor units arranged in a plurality of air-conditioned rooms, and particularly relates to a method for controlling the operation of the compressor. Concerning improvements in control methods.
［発明の技術的背景とその問題点］
１台の圧縮機で、複数の空調室を同時、もしく
は必要に応じて切換運転可能なマルチタイプの空
気調和機が多用される。この種のものにおいて
は、運転する室内ユニツトに備えた室内熱交換器
を同時に運転可能な最大能力を有する圧縮機が採
用されている。[Technical Background of the Invention and Problems Therein] Multi-type air conditioners are often used, in which a single compressor can operate multiple air-conditioned rooms at the same time or in a switched manner as needed. In this type of compressor, a compressor having the maximum capacity that can simultaneously operate an indoor heat exchanger provided in an operating indoor unit is employed.
しかしながら、室内ユニツトをたとえばｎ台全
て同時運転する必要は極めてまれであり、かつ使
用者にとつては不経済な使用であるので、意識的
に同時運転を避ける傾向にある。 However, it is extremely rare that all indoor units, for example, need to be operated at the same time, and since this is uneconomical for users, there is a tendency to consciously avoid simultaneous operation.
ｎ台全てが同時運転可能な能力を備えた圧縮機
を採用すると、室外ユニツトもそれに合せて大き
くなり、機器の大形化およびコスト高となるとい
う欠点がある。しかも、通常行なわれる少い台数
での運転の際は、効率が悪くなる。 If a compressor with the ability to operate all n units simultaneously is adopted, the outdoor unit will also be correspondingly large, resulting in a disadvantage that the equipment will become larger and the cost will increase. Moreover, when operating with a small number of units, which is usually performed, efficiency deteriorates.
このため、運転能力の小さい圧縮機を採用すれ
ば、上記不具合を除去できるが、ただ単に採用し
ただけでは、ｎ台全ての運転指令が出た際に適切
な処置をとることができない。 Therefore, if a compressor with a small operating capacity is used, the above-mentioned problem can be eliminated, but simply using a compressor will not allow appropriate measures to be taken when operation commands are issued for all n units.
［発明の目的］
本発明は、上記事情に着目してなされたもので
あり、その目的とするところは、各室内の温度に
応じて運転・停止指令を出力する室温サーモを利
用し、比較的小容量の圧縮機で複数の室内ユニツ
トの運転を可能とする制御をなし、快適性を保持
し、機器の小型化および低コスト化を図れる空気
調和機を提供しようとするものである。[Object of the Invention] The present invention has been made by paying attention to the above-mentioned circumstances, and its purpose is to utilize a room temperature thermostat that outputs start/stop commands according to the temperature in each room, and to The present invention aims to provide an air conditioner that can control the operation of multiple indoor units using a small-capacity compressor, maintain comfort, and reduce the size and cost of the equipment.
［発明の概要］
本発明は、室温サーモから運転指令のある室内
ユニツトが、ｎ−１台以下の場合、運転指令を出
力する室内ユニツトに対応する弁を開放し、停止
指令を出力する室内ユニツトに対応する弁を閉成
すると共に、圧縮機の回転数を運転指令のある室
内ユニツトから要求される回転数になるように制
御し、その後、室温サーモから運転指令のある室
内ユニツトがｎ台全てに変化すると、ｎ−１台の
室内ユニツトに対応する弁を開放し、ｎ台目の室
内ユニツトに対応する弁を閉成すると共に、圧縮
機の回転数をｎ−１台の室内ユニツトの運転時に
要求される回転数より上昇させ、ｎ−１台の室内
ユニツトのいずれかの室温サーモが停止指令を出
力したときのみｎ台目の室内ユニツトに対応する
弁を開放し、停止指令を出力する室内ユニツトに
対応する弁を閉成する空気調和機の制御方法であ
る。[Summary of the Invention] The present invention provides an indoor unit that opens a valve corresponding to the indoor unit that outputs the operation command and outputs a stop command when the number of indoor units that receive an operation command from a room temperature thermometer is n-1 or less. At the same time as closing the valve corresponding to , the valve corresponding to the n-1 indoor unit is opened, the valve corresponding to the n-th indoor unit is closed, and the rotation speed of the compressor is changed to the operating speed of the n-1 indoor unit. Only when the room temperature thermostat of any of the n-1 indoor units outputs a stop command, opens the valve corresponding to the n-th indoor unit and outputs a stop command. This is a control method for an air conditioner that closes a valve corresponding to an indoor unit.
［発明の実施例］
以下、本発明の一実施例を図面にもとづいて説
明する。第１図は、本空気調和機の冷凍サイクル
を示す。図中１は回転数可変形（能力可変形）の
圧縮機、２は四方弁、３は室外熱交換器、４は膨
張弁、５，６，７は液ライン開閉弁、８，９，１
０は第１、第２、第３の室内熱交換器、１１，１
２，１３はガスライン開閉弁、１４…はパツクド
バルブであり、これらは冷媒管Ｐを介してヒート
ポンプ式の冷凍サイクルを構成するよう連通す
る。上記液ライン開閉弁５，６，７およびガスラ
イン開閉弁１１，１２，１３は後述する制御回路
から開閉指令を受けるようになつている。なお、
上記第１ないし第３の室内熱交換器８，９，１０
はそれぞれ室内送風機１５…、室温サーモ１６…
などともに第１ないし第３の室内ユニツト１７，
１８，１９に収容される。上記各室温サーモ１６
…は後述する制御回路と電気的に接続され、各室
の室温を検知し、その温度に応じて室内ユニツト
１７，１８，１９の運転・停止指令を出力するよ
うになつている。その他の機器は、室外ユニツト
２０に収容される。[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described based on the drawings. FIG. 1 shows the refrigeration cycle of this air conditioner. In the figure, 1 is a variable speed (variable capacity) compressor, 2 is a four-way valve, 3 is an outdoor heat exchanger, 4 is an expansion valve, 5, 6, 7 are liquid line on-off valves, 8, 9, 1
0 is the first, second, third indoor heat exchanger, 11, 1
Reference numerals 2 and 13 indicate gas line on-off valves, and 14... indicate packed valves, which communicate through a refrigerant pipe P to constitute a heat pump type refrigeration cycle. The liquid line on-off valves 5, 6, 7 and the gas line on-off valves 11, 12, 13 are adapted to receive opening/closing commands from a control circuit to be described later. In addition,
The first to third indoor heat exchangers 8, 9, 10
are indoor blower 15... and room temperature thermostat 16...
etc. are the first to third indoor units 17,
It is accommodated in 18 and 19. Each of the above room temperature thermos 16
... are electrically connected to a control circuit, which will be described later, to detect the room temperature of each room and output operation/stop commands for the indoor units 17, 18, 19 according to the detected temperature. Other equipment is housed in the outdoor unit 20.
第５図は、本空気調和機の概略の電気回路を示
す。すなわち、電源電圧として単相100Vと、三
相200Vとを用意する。上記100V側の端子Ｒ、Ｔ
を介して制御回路２１と駆動用電源ラインを構成
するとともに各端子、を介して第１ないし第
３の室内ユニツト１７，１８，１９と、駆動用電
源ラインを構成する。また、第１ないし第３の室
内ユニツト１７，１８，１９は、上記駆動用電源
ラインから分岐し、各端子を介して上記制御回
路２１と制御信号ラインを構成する。上記制御回
路２１は、三相200Vの電源電圧と端子Ｒ、Ｓ、
Ｔを介して駆動用電源ラインを構成するインバー
タ回路２２に制御信号を送るようになつている。
上記インバータ回路２２は制御回路２１の制御信
号にもとづいて周波数を変換し、上記圧縮機１を
駆動するようになつている。 FIG. 5 shows a schematic electrical circuit of this air conditioner. That is, a single-phase 100V and a three-phase 200V are prepared as power supply voltages. Terminals R and T on the 100V side above
A drive power line is formed with the control circuit 21 via the control circuit 21, and a drive power line is formed with the first to third indoor units 17, 18, 19 through each terminal. Further, the first to third indoor units 17, 18, and 19 are branched from the drive power supply line, and form a control signal line with the control circuit 21 via each terminal. The control circuit 21 has a three-phase 200V power supply voltage and terminals R, S,
A control signal is sent via T to an inverter circuit 22 that constitutes a driving power supply line.
The inverter circuit 22 converts the frequency based on a control signal from the control circuit 21 and drives the compressor 1.
なお、このようにして構成される空気調和機に
おいて、圧縮機１の最大運転能力は室内ユニツト
１７，１８，１９が３台（ｎ台）あるところか
ら、ｎ−１台である２台を同時に運転できる能力
を有する。 In addition, in the air conditioner configured in this way, the maximum operating capacity of the compressor 1 is that there are three (n) indoor units 17, 18, and 19, so the maximum operating capacity of the compressor 1 is to operate two indoor units (n-1) at the same time. Must have the ability to drive.
しかして、圧縮機１を駆動し、第１図に実線矢
印に示すように冷媒を導びくことにより、第１な
いし第３の室内熱交換器８，９，１０で冷媒は蒸
発し、各空調室内から蒸発潜熱を奪つて冷房作用
をなす。また、破線矢印に示すように冷媒を導び
くことにより、各室内熱交換器８，９，１０で冷
媒は凝縮し、各空調室へ凝縮熱を放出して暖房作
用をなす。 By driving the compressor 1 and guiding the refrigerant as shown by the solid arrow in FIG. 1, the refrigerant is evaporated in the first to third indoor heat exchangers 8, 9, and 10, and It acts as an air conditioner by removing latent heat of vaporization from the room. Furthermore, by guiding the refrigerant as shown by the broken line arrows, the refrigerant is condensed in each of the indoor heat exchangers 8, 9, and 10, and the heat of condensation is released to each air-conditioned room to perform a heating effect.
なお、上記室内熱交換器８，９，１０を備えた
各室内ユニツト１７，１８，１９は常に同時に空
調作用を必要とするものではい。３台全部、２台
のみあるいは１台のみの作用が指示される。 Note that the indoor units 17, 18, 19 equipped with the indoor heat exchangers 8, 9, 10 do not always require air conditioning at the same time. The action of all three units, only two units, or only one unit is instructed.
上記制御回路２１は、第２図に示すように上記
圧縮機１の運転制御をなす。すなわち、ｎ台の室
内ユニツトを備えたｎ室の空調室がある場合、そ
れぞれの室温サーモ１６…から制御回路２１に運
転または停止、もしくは運転中における必要能力
の指令が出される。制御回路２１は、これを受け
て運転指令のある台数を判別し、合計し、かつ能
力の判別をなす。必要運転台数がｎ台全部である
か、ｎ−１台より少いかで、各開閉弁５，６，７
および１１，１２，１３に与える開閉指令が異る
とともに圧縮機１に与える回転数指令が異る。 The control circuit 21 controls the operation of the compressor 1 as shown in FIG. That is, when there are n air-conditioned rooms equipped with n indoor units, each room temperature thermostat 16 issues a command to the control circuit 21 to operate or stop the unit, or to indicate the required capacity during operation. In response to this, the control circuit 21 determines the number of vehicles for which an operation command is given, adds up the total, and determines the capacity. Each on-off valve 5, 6, 7 depending on whether the required number of operating units is all n units or less than n-1 units.
The opening/closing commands given to 11, 12, and 13 are different, and the rotation speed command given to the compressor 1 is also different.
たとえば、第３図に示すように暖房運転時にお
いて、全ての室温サーモ１６…からｎ台全部の運
転指令が出ていることを制御回路２１が判別した
ときには、圧縮機１の回転数を図中破線で示すよ
うに100％として最大能力を保持する。全ての空
調室の室温が、室温サーモ１６の設定温度OFF
点Toを越えたときのみ０％とする。室温サーモ
１６からの運転指令出力がｎ−１台以下であるこ
とを判別回路２１が判別したときには、図中実線
で示すように、はじめ100％の回転数とするが定
温の上昇にともなつて回転数を低減し、室温サー
モ１６の設定温度OFF点Toを越えたときに０％
とする。なお、Tsは室温サーモの設定温度ON点
である。 For example, as shown in FIG. 3, during heating operation, when the control circuit 21 determines that all room temperature thermostats 16 are issuing operation commands for all n units, the rotation speed of the compressor 1 is set as shown in the figure. Hold the maximum capacity as 100% as shown by the dashed line. The room temperature in all air conditioned rooms is set to OFF on room temperature thermometer 16.
It is set to 0% only when the point To is exceeded. When the determination circuit 21 determines that the operation command output from the room temperature thermostat 16 is less than n-1 units, as shown by the solid line in the figure, the rotation speed is initially set to 100%, but as the constant temperature increases, 0% when the rotation speed is reduced and the set temperature of the room temperature thermometer 16 exceeds the OFF point To.
shall be. Note that Ts is the set temperature ON point of the room temperature thermometer.
制御方法を具体的に示すと、第４図のようにな
る。すなわち、空調室ＡおよびＢの室温サーモ１
６，１６のみから運転指令が出力され、空調室Ｃ
の室温サーモ１６からは運転指令が出されない状
態のまま冷凍サイクル運転が開始されるものとす
る。空調室Ａ，Ｂそれぞれに連通する開閉弁５，
１１，６，１２に制御回路２１からON信号が発
せられ開放する。圧縮機１は、はじめ100％最大
能力で運転する。空調室Ａ，Ｂの室温は短時間で
設定温度まで上昇する。上昇の程度に応じて圧縮
機１の回転数を段階的に低下し、上記室温がTo
−Ts間の設定温度範囲内に到達する以前に必要
最低回転数を保持する。 A concrete example of the control method is shown in FIG. That is, room temperature thermometer 1 of air conditioned rooms A and B
Operation commands are output only from 6 and 16, and air conditioned room C
It is assumed that the refrigeration cycle operation is started without any operation command issued from the room temperature thermometer 16. An on-off valve 5 communicating with each of the air-conditioned rooms A and B,
An ON signal is issued from the control circuit 21 to 11, 6, and 12 to open them. Compressor 1 initially operates at 100% maximum capacity. The room temperatures in air conditioned rooms A and B rise to the set temperature in a short time. The rotation speed of the compressor 1 is gradually lowered depending on the degree of rise, and the above room temperature is
The required minimum rotational speed is maintained before reaching the set temperature range between -Ts.
ここで、空調室Ｃの室温サーモ１６から運転指
令が発せられる（図中S1点）と、上記制御回路２
１はこの信号を受けて、圧縮機１の回転数をS2点
から最大能力値まで急上昇させる。予め、空調室
Ａの室内ユニツト１７に冷媒が多く導びかれるよ
うに構成しておけば、この室温はS3点から速やか
に上昇して、室温サーモ１６のOFF点Toに到達
する。制御回路２１は、この室温サーモの検知信
号を受けて、空調室Ｃに連通する開閉弁７，１３
を直ちに開放する。空調室Ｃでは運転開始指令が
出てから短時間で室内ユニツトの運転が開始され
ることとなり、室温が上昇する。一方、空調室Ａ
では冷凍サイクル運転が停止しているが、それ迄
の暖房作用の影響により、室温は上記Toを一旦
越えてから放熱作用により徐々に低下する。空調
室Ｃの室温が設定温度範囲内まで上昇したころ、
空調室Ａの室温が室温サーモ１６のON点Tsまで
低下する。制御回路２１はこれらの信号を受け
て、空調室Ａ，Ｃに連通する開閉弁５，１１，
７，１３の開閉を逆にする。すなわち、空調室Ａ
の暖房作用は再会され、空調室Ｃのそれは停止す
る。 Here, when an operation command is issued from the room temperature thermometer 16 of the air conditioned room C (point S in the figure), the control circuit 2
1 receives this signal and rapidly increases the rotation speed of compressor 1 from point S2 to the maximum capacity value. If a large amount of refrigerant is introduced into the indoor unit 17 of the air-conditioned room A in advance, the room temperature will quickly rise from the S3 point and reach the OFF point To of the room temperature thermostat 16. The control circuit 21 receives the detection signal of the room temperature thermostat and controls the on-off valves 7 and 13 communicating with the air conditioned room C.
will be released immediately. In the air conditioned room C, the indoor unit starts operating in a short time after the operation start command is issued, and the room temperature rises. On the other hand, air conditioning room A
Although the refrigeration cycle operation has stopped, due to the influence of the heating effect until then, the room temperature once exceeds the above To, and then gradually decreases due to the heat dissipation effect. When the room temperature in air conditioned room C rose to within the set temperature range,
The room temperature of the air conditioned room A drops to the ON point Ts of the room temperature thermometer 16. The control circuit 21 receives these signals and operates the on-off valves 5, 11, which communicate with the air conditioned rooms A and C.
Reverse the opening and closing of 7 and 13. That is, air conditioned room A
The heating action of C is resumed and that of air conditioned room C is stopped.
以後、制御回路２１はそれぞれの室温サーモ１
６…の信号を受けて、空調室ＡとＣの暖房作用を
交互に再開する。このことから、圧縮機１は２室
同時運転の最大能力を保持すれば、制御回路２１
は３室に対する運転を制御できる。空調室ＡとＣ
においては、継続的な暖房作用がなされるが、極
端な冷え込みはなく、極めて有効である。また、
空調室Ｂは、切換制御の影響を何ら受けることな
く、継続して設定温度範囲を保持できる。 Thereafter, the control circuit 21 controls each room temperature thermostat 1.
Upon receiving the signal 6..., the heating action of air conditioned rooms A and C is restarted alternately. From this, if the compressor 1 maintains the maximum capacity for simultaneous operation of two chambers, the control circuit 21
can control the operation of three rooms. Air conditioned rooms A and C
Although the heating effect is continuous, there is no extreme cooling and it is extremely effective. Also,
The air conditioned room B can continuously maintain the set temperature range without being affected by the switching control.
このように上記実施例においては、空調室Ｃの
室温サーモ１６から運転指令が出たら、圧縮機１
の回転数を最大能力値まで急上昇させるようにし
たので、空調室Ａの室温が上昇して早急に制御状
態に入れる。すなわち、空調室Ｃは上記運転指令
から極めて短時間で実際の作用を得る。 In this way, in the above embodiment, when an operation command is issued from the room temperature thermometer 16 of the air conditioning room C, the compressor 1
Since the rotation speed of the air conditioner A is rapidly increased to the maximum capacity value, the room temperature of the air conditioned room A rises and the control state is quickly put in place. That is, the air conditioned room C obtains an actual effect in a very short time from the above operation command.
なお、上記実施例においては、３台の室内ユニ
ツト１７，１８，１９を備えたものとして説明し
たが、要は複数台あればよく、圧縮機１の最大能
力はｎ−１台分となる。 Although the above embodiment has been described as having three indoor units 17, 18, and 19, it is sufficient to have a plurality of indoor units, and the maximum capacity of the compressor 1 is for n-1 units.
また、暖房運転ばかりでなく、冷房運転時にお
いても、同時に制御をなし得る。 Furthermore, control can be performed simultaneously not only during heating operation but also during cooling operation.
［発明の効果］
本発明は、室内ユニツトがｎ台あるものにおい
て、各室内ユニツトに備えた室温サーモの運転・
停止指令にもとづく制御をなすことにより、圧縮
機の最大能力がｎ−１台同時運転分あればよいこ
ととなり、圧縮機および室外ユニツト等機器の小
形化と低コスト化を図れる。しかも、室温サーモ
から運転指令のある室内ユニツトがｎ−１台以下
からｎ台全てに変化すると、圧縮機の回転数をｎ
−１台の室内ユニツトの運転時に要求される回転
数より上昇させることにより、短時間でｎ台目の
運転を開始させることができるので、ｎ台全てが
同時運転指令されても、全ての快適性を損なうこ
とのない作用が得られる。[Effects of the Invention] The present invention can improve the operation and operation of the room temperature thermostat provided in each indoor unit in a system with n indoor units.
By performing control based on the stop command, the maximum capacity of the compressor only needs to be the capacity for simultaneous operation of n-1 compressors, making it possible to downsize and reduce costs of equipment such as the compressor and outdoor unit. Moreover, if the number of indoor units for which operation commands are given from the room temperature thermostat changes from less than n-1 to all n units, the number of rotations of the compressor will be reduced to n.
- By increasing the rotation speed above the speed required for operation of one indoor unit, operation of the n-th indoor unit can be started in a short time, so even if all n units are commanded to operate at the same time, all indoor units can be operated comfortably. Effects that do not impair sex can be obtained.
図面は本発明の一実施例を示し、第１図は空気
調和機の冷凍サイクル構成図、第２図は制御フロ
ーチヤート図、第３図は圧縮機の能力特性図、第
４図は全室運転モードでの制御特性図、第５図は
概略的電気回路図である。
１……圧縮機、２０……室外ユニツト、３……
室外熱交換器、８，９，１０……室内熱交換器、
１７，１８，１９……室内ユニツト、１６……室
温サーモ、５，６，７……液ライン開閉弁、１
１，１２，１３……ガスライン開閉弁、２１……
制御回路。
The drawings show one embodiment of the present invention, in which Fig. 1 is a configuration diagram of the refrigeration cycle of an air conditioner, Fig. 2 is a control flow chart, Fig. 3 is a capacity characteristic diagram of the compressor, and Fig. 4 is a diagram of the refrigeration cycle of an air conditioner. The control characteristic diagram in the operating mode, FIG. 5, is a schematic electrical circuit diagram. 1...Compressor, 20...Outdoor unit, 3...
Outdoor heat exchanger, 8, 9, 10... Indoor heat exchanger,
17, 18, 19... Indoor unit, 16... Room temperature thermostat, 5, 6, 7... Liquid line on/off valve, 1
1, 12, 13... Gas line on/off valve, 21...
control circuit.
Claims (1)
ツトと室内熱交換器を備えるｎ台の室内ユニツト
とを冷媒配管で接続し、各々の室内熱交換器と圧
縮機間の冷媒流通を制御する弁と各々の室内ユニ
ツトに設けられ各室内の温度に応じて運転・停止
指令を出力する室温サーモとを具備した空気調和
機の制御方法において、 室温サーモから運転指令のある室内ユニツト
が、ｎ−１台以下の場合、運転指令を出力する室
内ユニツトに対応する弁を開放し、停止指令を出
力する室内ユニツトに対応する弁を閉成すると共
に、圧縮機の回転数を運転指令のある室内ユニツ
トから要求される回転数になるように制御し、 その後、室温サーモから運転指令のある室内ユ
ニツトがｎ台全てに変化すると、ｎ−１台の室内
ユニツトに対応する弁を開放し、ｎ台目の室内ユ
ニツトに対応する弁を閉成すると共に、圧縮機の
回転数をｎ−１台の室内ユニツトの運転時に要求
される回転数より上昇させ、 ｎ−１台の室内ユニツトのいずれかの室温サー
モが停止指令を出力したときのみｎ台目の室内ユ
ニツトに対応する弁を開放し、停止指令を出力す
る室内ユニツトに対応する弁を閉成する空気調和
機の制御方法。[Scope of Claims] 1. An outdoor unit equipped with a compressor with variable rotation speed and n indoor units equipped with indoor heat exchangers are connected by refrigerant piping, and the connection between each indoor heat exchanger and the compressor is In a method for controlling an air conditioner that is equipped with a valve that controls refrigerant flow and a room temperature thermostat that is installed in each indoor unit and outputs an operation/stop command according to the temperature in each room, If the number of units is n-1 or less, the valve corresponding to the indoor unit that outputs the operation command is opened, the valve corresponding to the indoor unit that outputs the stop command is closed, and the rotational speed of the compressor is reduced. Control is performed so that the rotational speed is as required by the indoor unit with the command, and then when the number of indoor units with the operation command changes from the room temperature thermostat to all n units, the valve corresponding to n-1 indoor units is opened. Then, the valve corresponding to the n-th indoor unit is closed, and the rotational speed of the compressor is increased above the rotational speed required when operating the n-1 indoor unit. A control method for an air conditioner in which a valve corresponding to the n-th indoor unit is opened only when one of the room temperature thermometers outputs a stop command, and a valve corresponding to the indoor unit outputting the stop command is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58005475A JPS59131841A (en) | 1983-01-17 | 1983-01-17 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58005475A JPS59131841A (en) | 1983-01-17 | 1983-01-17 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59131841A JPS59131841A (en) | 1984-07-28 |
| JPH0355729B2 true JPH0355729B2 (en) | 1991-08-26 |
Family
ID=11612265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58005475A Granted JPS59131841A (en) | 1983-01-17 | 1983-01-17 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59131841A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08200776A (en) * | 1995-01-31 | 1996-08-06 | Hideteru Yamamoto | Refrigerant control method in multi-set type air-conditioning system |
| JP5132757B2 (en) * | 2010-11-19 | 2013-01-30 | 三菱電機株式会社 | Control device, control method and program |
| JP2014219152A (en) * | 2013-05-08 | 2014-11-20 | 三菱電機株式会社 | Air conditioner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5222664B2 (en) * | 1973-08-20 | 1977-06-18 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5635711Y2 (en) * | 1976-08-19 | 1981-08-22 | ||
| JPS5388060U (en) * | 1976-12-22 | 1978-07-19 |
-
1983
- 1983-01-17 JP JP58005475A patent/JPS59131841A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5222664B2 (en) * | 1973-08-20 | 1977-06-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59131841A (en) | 1984-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7640761B2 (en) | System and method for controlling indoor air flow for heating, ventilating and air conditioning equipment | |
| JPS63150551A (en) | Air-conditioning system and control method of speed of compressor and speed of motor in said system | |
| US11927358B2 (en) | HVAC unit fan control systems and methods | |
| US20170030621A1 (en) | Low ambient cooling scheme and control | |
| JPH09310927A (en) | Device for controlling refrigerant of air conditioner | |
| JPH10197028A (en) | Air conditioner | |
| JPH0355729B2 (en) | ||
| JPH03241260A (en) | Multi-room air-conditioner | |
| JPS6349640Y2 (en) | ||
| JP2689599B2 (en) | Operation control device for air conditioner | |
| KR100423362B1 (en) | Air conditioner | |
| JPH0668410B2 (en) | Air conditioner | |
| CN111712674B (en) | Air conditioner | |
| JP2815403B2 (en) | Multi-room air conditioner | |
| JP4229546B2 (en) | Air conditioner control device | |
| JPS5927145A (en) | Air conditioner | |
| JP3401873B2 (en) | Control device for air conditioner | |
| JP4404420B2 (en) | Air conditioner control device | |
| US20220307719A1 (en) | Systems and methods to operate hvac system in variable operating mode | |
| JP3109369B2 (en) | Air conditioner | |
| JPH10332186A (en) | Air conditioner | |
| JPS61197936A (en) | Air conditioner | |
| JPH0120604Y2 (en) | ||
| JPS6341762A (en) | Air conditioner | |
| JPH01193546A (en) | Defrosting operation control device for air conditioner |