JP3163133B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP3163133B2 JP3163133B2 JP32592491A JP32592491A JP3163133B2 JP 3163133 B2 JP3163133 B2 JP 3163133B2 JP 32592491 A JP32592491 A JP 32592491A JP 32592491 A JP32592491 A JP 32592491A JP 3163133 B2 JP3163133 B2 JP 3163133B2
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- air conditioning
- conditioning load
- frequency
- compressors
- 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 - Fee Related
Links
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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
- F25B2400/0751—Details of compressors or related parts with parallel compressors the compressors having different capacities
-
- 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
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、複数台の圧縮機の運
転台数および運転周波数を空調負荷に応じて制御する空
気調和機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for controlling the number and operating frequency of a plurality of compressors in accordance with an air conditioning load.
【０００２】[0002]
【従来の技術】一般に、複数台の室内ユニットを有する
マルチタイプの空気調和機では、室外ユニットに複数台
の圧縮機を設け、これら圧縮機の運転台数および運転周
波数を各室内ユニットの空調負荷の総和に応じて制御す
る。複数台の圧縮機としては、商用電源駆動の能力固定
圧縮機およびインバータ駆動の能力可変圧縮機がある。2. Description of the Related Art In general, in a multi-type air conditioner having a plurality of indoor units, a plurality of compressors are provided in an outdoor unit, and the number of operating compressors and the operating frequency of each of the compressors are determined by the air conditioning load of each indoor unit. Control according to the sum. As the plurality of compressors, there are a fixed capacity compressor driven by a commercial power supply and a variable capacity compressor driven by an inverter.
【０００３】[0003]
【発明が解決しようとする課題】ただし、商用電源駆動
の能力固定圧縮機については、電源周波数が５０Ｈｚの
場合と６０Ｈｚの場合とで能力が変わるため、空調負荷
に対応する最適な能力を確保できないことがある。ひい
ては高圧側圧力が異常上昇し、高圧保護が働いて運転停
止に至ることもある。However, for a fixed capacity compressor driven by a commercial power supply, the capacity changes between a case where the power supply frequency is 50 Hz and a case where the power supply frequency is 60 Hz, so that an optimum capacity corresponding to the air conditioning load cannot be secured. Sometimes. Eventually, the high-pressure side pressure rises abnormally, and the high-pressure protection works, sometimes leading to an operation stop.
【０００４】この発明は上記の事情を考慮したもので、
その目的とするところは、常に空調負荷に対応する最適
な能力を確保することができ、快適性の向上が図れ、ま
た不要な運転停止を回避することができる空気調和機を
提供することにある。[0004] The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide an air conditioner that can always secure an optimum capacity for an air conditioning load, can improve comfort, and can avoid unnecessary operation stoppages. .
【０００５】[0005]
【課題を解決するための手段】この発明の空気調和機
は、インバータ駆動の能力可変圧縮機および商用電源駆
動の能力固定圧縮機をそれぞれ複数台備え、これら圧縮
機の運転台数および運転周波数を空調負荷に応じて可変
する複数の運転パターンに切換える空気調和機であっ
て、上記商用電源の周波数を検出する手段と、上記空調
負荷に応じて可変する複数の運転パターンのうち、能力
固定圧縮機の運転を実行する運転パターンに切換える場
合、上記運転パターンの空調負荷に応じた切換点を上記
周波数の検出結果に応じてシフトする手段とを備える。An air conditioner according to the present invention includes a plurality of variable capacity compressors driven by an inverter and a plurality of fixed capacity compressors driven by a commercial power supply. Variable according to load
Met air conditioner switches to a plurality of operation patterns
Te, means for detecting the frequency of the commercial power supply, the air-conditioning
Among multiple operation patterns that can be changed according to load,
When switching to the operation pattern to execute the operation of the fixed compressor
The switching point according to the air conditioning load of the above operation pattern
Means for shifting according to the frequency detection result .
【０００６】[0006]
【作用】この発明の空気調和機では、空調負荷に応じて
可変する複数の運転パターンのうち、能力固定圧縮機の
運転を実行する運転パターンに切換える場合、運転パタ
ーンの空調負荷に応じた切換点を商用電源の周波数に応
じてシフトする。 According to the air conditioner of the present invention , depending on the air conditioning load.
Among the variable operating patterns, the fixed capacity compressor
When switching to the operation pattern to execute the operation,
Switching point according to the air conditioning load of the
Shift.
【０００７】[0007]
【実施例】以下、この発明の一実施例について図面を参
照して説明する。An embodiment of the present invention will be described below with reference to the drawings.
【０００８】図２において、Ａは１台の室外ユニット
で、この室外ユニットＡに分配ユニットＢを介して複数
台の室内ユニットＣ1 ，Ｃ2 ，Ｃ3 を配管接続してい
る。In FIG. 2, A is a single outdoor unit, and a plurality of indoor units C 1 , C 2 , and C 3 are connected to the outdoor unit A via a distribution unit B by piping.
【０００９】室外ユニットＡは、２つの圧縮機を１つの
ケース内に収めたタイプの圧縮機１、および同じく２つ
の圧縮機を１つのケース内に収めたタイプの圧縮機２を
備える。以下、説明の都合上、圧縮機１，２を圧縮機ケ
ース１，２と称する。The outdoor unit A includes two compressors
Compressor 1 in a case and two of them
Compressor 2 of the type in which
Prepare. Hereinafter, the compressors 1 and 2 will be referred to as compressor cases 1 and 2 for convenience of description.
【００１０】すなわち、圧縮機１は、インバータ駆動の
能力可変圧縮機（INV1）３、および商用電源駆動の能力
固定圧縮機（商用1 ）４を有する。圧縮機２は、インバ
ータ駆動の能力可変圧縮機（INV2）５、および商用電源
駆動の能力固定圧縮機（商用2 ）６を有する。これら圧
縮機３，４，５，６の冷媒吐出口に、それぞれ逆止弁７
を順方向に介し、さらに四方弁８を介し、室外熱交換器
９を接続する。That is, the compressor 1 has a variable capacity compressor (INV1) 3 driven by an inverter and a fixed capacity compressor (commercial 1) 4 driven by a commercial power supply. The compressor 2 has a variable capacity compressor (INV2) 5 driven by an inverter and a fixed capacity compressor (commercial 2) 6 driven by a commercial power supply. Check valves 7 are provided at the refrigerant discharge ports of the compressors 3, 4, 5, and 6, respectively.
Is connected to the outdoor heat exchanger 9 through the four-way valve 8 in the forward direction.
【００１１】室外熱交換器９に冷房サイクル形成用の逆
止弁１０および受液器１１を介してヘッダＨを接続す
る。このヘッダＨから室外熱交換器９にかけて、暖房用
の膨張弁１２を接続する。A header H is connected to the outdoor heat exchanger 9 via a check valve 10 for forming a cooling cycle and a liquid receiver 11. An expansion valve 12 for heating is connected from the header H to the outdoor heat exchanger 9.
【００１２】ヘッダＨに、電動式の流量調整弁（パルス
モータバルブ；以下、ＰＭＶと略称する）２１，３１，
４１、および冷房用の膨張弁２２，３２，４２と暖房サ
イクル形成用の逆止弁２３，３３，４３の並列体を介
し、室内熱交換器２４，３４，４４を接続する。室内熱
交換器２４，３４，４４にヘッダＨを接続し、そのヘッ
ダＨをアキュ―ムレ―タ１３を介して圧縮機３，４，
５，６の冷媒吸込口に接続する。こうして、室外ユニッ
トＡ、分配ユニットＢ、および室内ユニットＣ1 ，
Ｃ2，Ｃ3 において、ヒートポンプ式冷凍サイクルを構
成している。The header H is provided with electric flow control valves (pulse motor valves; hereinafter abbreviated as PMV) 21, 31,
41, and the indoor heat exchangers 24, 34, 44 are connected via parallel bodies of cooling expansion valves 22, 32, 42 and heating cycle forming check valves 23, 33, 43. The header H is connected to the indoor heat exchangers 24, 34, 44, and the header H is connected to the compressors 3, 4, 4 via the accumulator 13.
Connect to refrigerant inlets 5 and 6. Thus, the outdoor unit A, the distribution unit B, and the indoor unit C 1 ,
C 2 and C 3 constitute a heat pump refrigeration cycle.
【００１３】すなわち、冷房運転時は図示実線矢印の方
向に冷媒を流して冷房サイクルを形成し、暖房運転時は
四方弁８の切換作動により図示破線矢印の方向に冷媒を
流して暖房サイクルを形成する。That is, during the cooling operation, the refrigerant flows in the direction of the solid line shown in the drawing to form a cooling cycle, and in the heating operation, the switching operation of the four-way valve 8 causes the refrigerant to flow in the direction of the broken line in the drawing to form the heating cycle. I do.
【００１４】上記冷房用膨張弁２２，３２，４２はそれ
ぞれ感温筒２２ａ，３２ａ，４２ａを有しており、これ
ら感温筒を室内熱交換器２４，３４，４４のガス側冷媒
配管にそれぞれ取付ける。The cooling expansion valves 22, 32, 42 have temperature-sensitive cylinders 22a, 32a, 42a, respectively, and these temperature-sensitive cylinders are respectively connected to gas-side refrigerant pipes of the indoor heat exchangers 24, 34, 44. Attach.
【００１５】また、圧縮機ケース１，２のそれぞれの基
準油面レベル位置に均油管接続口を設け、その両接続口
を均油管１４で接続する。この均油管１４は、潤滑油を
流通させるためのものである。圧縮機３，４，５，６の
吐出側の各逆止弁７と四方弁８との間の高圧側配管に、
圧力センサ１５を取付ける。制御回路を図３に示す。An oil equalizing pipe connection port is provided at each of the reference oil level positions of the compressor cases 1 and 2, and both connection ports are connected by an oil equalizing pipe 14. The oil equalizing pipe 14 is for flowing lubricating oil. The high-pressure side piping between each check valve 7 and the four-way valve 8 on the discharge side of the compressors 3, 4, 5, 6
The pressure sensor 15 is mounted. The control circuit is shown in FIG.
【００１６】室外ユニットＡは室外制御部５０を備えて
いる。この室外制御部５０に分配ユニットＢの分配制御
部６０を接続し、その分配制御部６０に室内ユニットＣ
1 ，Ｃ2 ，Ｃ3 のそれぞれ室内制御部７０を接続する。The outdoor unit A has an outdoor control section 50. The distribution control unit 60 of the distribution unit B is connected to the outdoor control unit 50, and the distribution control unit 60 is connected to the indoor unit C.
1 , C 2 and C 3 are respectively connected to the indoor control units 70.
【００１７】室外制御部５０は、マイクロコンピュ―タ
およびその周辺回路からなる。この室外制御部５０に、
四方弁８、圧力センサ１５、インバ―タ５１，５３、ス
イッチ５２，５４、周波数検出部５５を接続する。The outdoor controller 50 comprises a microcomputer and its peripheral circuits. In this outdoor control unit 50,
The four-way valve 8, the pressure sensor 15, the inverters 51 and 53, the switches 52 and 54, and the frequency detector 55 are connected.
【００１８】インバ―タ回路５１，５３は、商用交流電
源５６の電圧を整流し、それを室外制御部５０の指令に
応じたスイッチングによって所定周波数の電圧に変換
し、出力するものである。この出力は、圧縮機モ―タ３
Ｍ，５Ｍの駆動電力となる。スイッチ５２，５４は、た
とえばリレー接点である。このスイッチ５２，５４をそ
れぞれ介して、商用交流電源５６に圧縮機モータ４Ｍ，
６Ｍを接続する。周波数検出部５５は、商用交流電源５
６の周波数（５０Ｈｚまたは６０Ｈｚ）を検出するもの
である。分配制御部６０は、マイクロコンピュ―タおよ
びその周辺回路からなる。この分配制御部６０に、ＰＭ
Ｖ２１，３１，４１を接続する。The inverter circuits 51 and 53 rectify the voltage of the commercial AC power supply 56, convert the rectified voltage to a voltage of a predetermined frequency by switching according to a command from the outdoor control unit 50, and output the voltage. This output is supplied to compressor motor 3
M and 5M drive power. Switches 52 and 54 are, for example, relay contacts. Via these switches 52 and 54, the compressor motors 4M, 4M,
Connect 6M. The frequency detection unit 55 includes the commercial AC power supply 5
No. 6 (50 Hz or 60 Hz) is detected. The distribution control unit 60 comprises a microcomputer and its peripheral circuits. The distribution control unit 60 includes a PM
V21, 31, 41 are connected.
【００１９】室内制御部７０は、マイクロコンピュ―タ
およびその周辺回路からなる。この室内制御部７０に、
リモートコントロール式の操作器（以下、リモコンと略
称する）７１、および室内温度センサ７２を接続する。
そして、室内制御部７０は、次の機能手段を備える。 （１）リモコン７１の操作に基づく運転開始指令，運転
モード設定指令，および運転停止指令を分配ユニットＢ
に送る手段。 （２）室内温度センサ７２の検知温度とリモコン７１で
の設定室内温度との差を空調負荷として求め、その空調
負荷データを分配ユニットＢに送る手段。分配制御部６
０は、次の機能手段を備える。 （１）室内ユニットＣ1 ，Ｃ2 ，Ｃ3 の空調負荷の総和
を求め、その総合空調負荷データを室外ユニットＡに送
る手段。 （２）室内ユニットＣ1 ，Ｃ2 ，Ｃ3 の空調負荷に応じ
てＰＭＶ２１，３１，４１の開度を制御する手段。室外
制御部５０は、次の機能手段を備える。 （１）圧縮機３，４，５，６の運転台数および運転周波
数を空調負荷の総和に応じて複数のパターンに切換える
手段。 （２）圧力センサ１５の検知圧力が異常上昇して設定値
に達すると、圧縮機３，４，５，６の運転を停止する高
圧保護手段。 （３）周波数検出部５５の検出結果に応じて上記パター
ンを補正する手段。次に、図１および図３を参照しなが
ら作用を説明する。運転時、圧縮機３，４，５，６の運
転台数および運転周波数を空調負荷の総和に応じて複数
のパターンI ，II，III ，IVに切換える。すなわち、空
調負荷が小さいとき（Ｌ1 〜Ｌ2 ）、パターンI を選択
して圧縮機３の能力可変運転を実行する。空調負荷が少
し増すと（Ｌ2 〜Ｌ3 ）、パターンIIを選択して圧縮機
３，５のそれぞれ能力可変運転を実行する。空調負荷が
さらに増すと（Ｌ3 〜Ｌ4 ）、パターンIII を選択して
圧縮機３，５の能力可変運転および圧縮機４の能力固定
運転を実行する。空調負荷が大きくなると（Ｌ4 〜
Ｌ5）、パターンIVを選択して圧縮機３，５の能力可変
運転および圧縮機４，６の能力固定運転を実行する。The indoor control unit 70 comprises a microcomputer and its peripheral circuits. In this indoor control unit 70,
A remote control type operation device (hereinafter, abbreviated as a remote control) 71 and an indoor temperature sensor 72 are connected.
And the indoor control part 70 is provided with the following functional means. (1) Distribution unit B transmits an operation start command, operation mode setting command, and operation stop command based on operation of remote controller 71
Means to send to. (2) Means for obtaining the difference between the detected temperature of the room temperature sensor 72 and the room temperature set by the remote controller 71 as an air conditioning load, and sending the air conditioning load data to the distribution unit B. Distribution control unit 6
0 has the following functional means. (1) Means for calculating the sum of the air conditioning loads of the indoor units C 1 , C 2 , C 3 and transmitting the total air conditioning load data to the outdoor unit A. (2) Means for controlling the degree of opening of the PMVs 21, 31, 41 according to the air conditioning loads of the indoor units C 1 , C 2 , C 3 . The outdoor control unit 50 includes the following functional units. (1) Means for switching the number of operating compressors and the operating frequency of the compressors 3, 4, 5, and 6 into a plurality of patterns in accordance with the total air conditioning load. (2) High-pressure protection means for stopping the operation of the compressors 3, 4, 5, and 6 when the pressure detected by the pressure sensor 15 abnormally rises and reaches a set value. (3) A means for correcting the pattern according to the detection result of the frequency detection unit 55. Next, the operation will be described with reference to FIGS. During operation, the number of operating compressors and the operating frequency of the compressors 3, 4, 5, and 6 are switched to a plurality of patterns I, II, III, and IV in accordance with the total air conditioning load. That is, when the air conditioning load is small (L 1 to L 2 ), the pattern I is selected and the capacity variable operation of the compressor 3 is executed. When the air-conditioning load increases slightly (L 2 ~L 3), to perform the respective variable capacity operation of the compressor 3 and 5 to select the pattern II. When the air conditioning load is further increased (L 3 ~L 4), executes the ability fixing operation of variable capacity operation and the compressor 4 of the pattern III Select the compressor 3,5. When the air conditioning load increases (L 4 ~
L 5), executes the ability fixing operation of variable capacity operation and the compressor 4 and 6 of the compressor 3 and 5 to select the pattern IV.
【００２０】ところで、圧縮機４や圧縮機６の能力固定
運転が存在するパターンIII ，IVでは、電源５６の周波
数が５０Ｈｚの場合と６０Ｈｚの場合とで、能力に差が
生じる。つまり、図１に斜線で示すように、５０Ｈｚで
は圧縮機４や圧縮機６の発揮する能力が６０Ｈｚの場合
よりも低くなる。そこで、周波数検出部５５の検出結果
に基づき、パターンII，III ，IVを次のように補正す
る。By the way, in the patterns III and IV in which the fixed capacity operation of the compressor 4 or the compressor 6 exists, there is a difference in the capacity between the case where the frequency of the power supply 56 is 50 Hz and the case where the frequency is 60 Hz. That is, as shown by hatching in FIG. 1, the capacity of the compressor 4 or the compressor 6 at 50 Hz is lower than that at 60 Hz. Therefore, based on the detection result of the frequency detection unit 55, the patterns II, III, and IV are corrected as follows.
【００２１】まず、５０Ｈｚのとき、パターンII，III
の切換点を６０Ｈｚのときのそれよりも低負荷側に所定
値αだけシフトする。さらに、パターンIII ，IVの切換
点を６０Ｈｚのときのそれよりも低負荷側に所定値βだ
けシフトする。First, at 50 Hz, patterns II and III
Is shifted by a predetermined value α to a lower load side than that at 60 Hz. Further, the switching point of patterns III and IV is shifted by a predetermined value β to a lower load side than that at 60 Hz.
【００２２】そして、５０Ｈｚでは、パターンIII にお
ける圧縮機３の能力（＝運転周波数）を６０Ｈｚの場合
のそれよりも所定値だけ低くするとともに、パターンIV
における圧縮機３の能力を６０Ｈｚの場合のそれよりも
所定値だけ低くする。これは、パターンの切換点をシフ
トしたことによって生じる余計な能力増大分を減らすた
めのものである。At 50 Hz, the capacity (= operating frequency) of the compressor 3 in Pattern III is made lower by a predetermined value than that at 60 Hz, and at Pattern IV,
Is reduced by a predetermined value from that in the case of 60 Hz. This is to reduce the extra capacity increase caused by shifting the pattern switching point.
【００２３】このように、空調負荷に応じて可変する複
数の運転パターンのうち、能力固定の圧縮機４，６の運
転を実行する運転パターンに切換える場合、運転パター
ンの空調負荷に応じた切換点を電源周波数に応じてシフ
トすることにより、つまり電源周波数に応じてパターン
II，III ，IVの切換点をシフトすることにより、常に空
調負荷に対応する最適な能力を確保することができる。
よって、快適性の向上が図れる。また、高圧側圧力の異
常上昇を防ぐことができ、高圧保護による不要な運転停
止を回避することができる。As described above, a multiple variable variable according to the air conditioning load.
The operation of the fixed capacity compressors 4 and 6
When switching to an operation pattern to execute
The switching point according to the air conditioning load of the
The pattern according to the power supply frequency.
By shifting the switching points of II, III, and IV, it is possible to always ensure the optimum capacity for the air conditioning load.
Therefore, the comfort can be improved. In addition, an abnormal increase in the high-pressure side pressure can be prevented, and unnecessary shutdown due to high-pressure protection can be avoided.
【００２４】[0024]
【００２５】[0025]
【発明の効果】以上述べたようにこの発明によれば、常
に空調負荷に対応する最適な能力を確保することがで
き、快適性の向上が図れ、また不要な運転停止を回避す
ることができる空気調和機を提供できる。As described above, according to the present invention, it is possible to always secure the optimum capacity for the air-conditioning load, to improve the comfort, and to avoid unnecessary stoppage. An air conditioner can be provided.
【図１】同実施例における運転台数および運転周波数の
パターンを示す図。FIG. 1 is a diagram showing patterns of the number of operating units and an operating frequency in the embodiment.
【図２】この発明の一実施例の冷凍サイクルの構成を示
す図。FIG. 2 is a diagram showing a configuration of a refrigeration cycle according to one embodiment of the present invention.
【図３】同実施例の制御回路の構成を示すブロック図。FIG. 3 is a block diagram showing a configuration of a control circuit of the embodiment.
【図４】同実施例におけるパターン切換点のシフトにつ
いて説明するためのフローチャート。FIG. 4 is a flowchart for explaining a shift of a pattern switching point in the embodiment.
Ａ…室外ユニット、Ｂ…分配ユニット、Ｃ1 ，Ｃ2 ，Ｃ
3 …室内ユニット、１，２…２in１タイプの圧縮機、
３，５…能力可変圧縮機、４，６…能力固定圧縮機、５
０…室外制御部、５５…周波数検出部、５６…商用交流
電源、６０…分配制御部、７０…室内制御部。A: outdoor unit, B: distribution unit, C 1 , C 2 , C
3 ... indoor unit, 1, 2 ... 2 in 1 type compressor,
3,5 ... variable capacity compressor, 4,6 ... fixed capacity compressor, 5
0: outdoor control unit, 55: frequency detection unit, 56: commercial AC power supply, 60: distribution control unit, 70: indoor control unit.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭64−41769（ＪＰ，Ａ) 特開 昭57−182039（ＪＰ，Ａ) 特開 昭61−138045（ＪＰ，Ａ) 特開 平１−203855（ＪＰ，Ａ) 特開 平１−193088（ＪＰ，Ａ) 特開 平２−262387（ＪＰ，Ａ) 特開 平１−262387（ＪＰ，Ａ) 実開 昭57−114331（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 1/00 F24F 11/02 102 F25B 13/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-64-41769 (JP, A) JP-A-57-182039 (JP, A) JP-A-61-138045 (JP, A) JP-A-1- 203855 (JP, A) JP-A-1-193088 (JP, A) JP-A-2-26287 (JP, A) JP-A 1-262387 (JP, A) Japanese Utility Model Application No. Sho 57-114331 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) F25B 1/00 F24F 11/02 102 F25B 13/00
Claims (1)
商用電源駆動の能力固定圧縮機をそれぞれ複数台備え、
これら圧縮機の運転台数および運転周波数を空調負荷に
応じて可変する複数の運転パターンに切換える空気調和
機であって、前記商用電源の周波数を検出する手段と、
前記空調負荷に応じて可変する複数の運転パターンのう
ち、能力固定圧縮機の運転を実行する運転パターンに切
換える場合、前記運転パターンの空調負荷に応じた切換
点を前記周波数の検出結果に応じてシフトする手段とを
備えたことを特徴とする空気調和機。A plurality of variable capacity compressors driven by an inverter and a plurality of fixed capacity compressors driven by a commercial power supply;
An air conditioner switch the operation number and the operation frequency of the compressor to the plurality of operation patterns to be varied in accordance with the air conditioning load, means for detecting the frequency of the commercial power source,
A plurality of operation patterns that vary according to the air conditioning load.
In other words, switch to the operation pattern to execute the operation of the fixed capacity compressor.
When changing, the operation pattern is switched according to the air conditioning load.
Means for shifting a point according to the detection result of the frequency .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32592491A JP3163133B2 (en) | 1991-12-10 | 1991-12-10 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32592491A JP3163133B2 (en) | 1991-12-10 | 1991-12-10 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05157374A JPH05157374A (en) | 1993-06-22 |
| JP3163133B2 true JP3163133B2 (en) | 2001-05-08 |
Family
ID=18182118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32592491A Expired - Fee Related JP3163133B2 (en) | 1991-12-10 | 1991-12-10 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3163133B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050042953A (en) | 2003-11-04 | 2005-05-11 | 엘지전자 주식회사 | Driving control method for air conditioner equipped with inverter compressor and regular velocity compressor |
| JP4508823B2 (en) * | 2004-10-26 | 2010-07-21 | 三洋電機株式会社 | Air conditioner |
| EP1693634A1 (en) * | 2005-02-22 | 2006-08-23 | Lg Electronics Inc. | Method for controlling the operation of an air-conditioner |
| JP4123281B2 (en) * | 2006-02-17 | 2008-07-23 | ダイキン工業株式会社 | Air conditioner |
| JP2010249452A (en) * | 2009-04-17 | 2010-11-04 | Mitsubishi Electric Corp | Air conditioner |
| JP5517667B2 (en) * | 2010-02-19 | 2014-06-11 | 三菱重工業株式会社 | Heat source system and control method thereof |
| JP5909739B2 (en) * | 2014-04-14 | 2016-04-27 | オリオン機械株式会社 | Exhaust system and exhaust device control method |
-
1991
- 1991-12-10 JP JP32592491A patent/JP3163133B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05157374A (en) | 1993-06-22 |
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