JPS63266179A - Operation control method for compressor of refrigerator - Google Patents
Operation control method for compressor of refrigeratorInfo
- Publication number
- JPS63266179A JPS63266179A JP62099071A JP9907187A JPS63266179A JP S63266179 A JPS63266179 A JP S63266179A JP 62099071 A JP62099071 A JP 62099071A JP 9907187 A JP9907187 A JP 9907187A JP S63266179 A JPS63266179 A JP S63266179A
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- contact
- inverter
- opened
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 15
- 238000005057 refrigeration Methods 0.000 claims description 37
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 206010065929 Cardiovascular insufficiency Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003756 stirring Methods 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
- 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
-
- 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
- Control Of Positive-Displacement Pumps (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はインバータをその電源とし、冷凍負荷の変動に
従ってそのうち一部をオンオフ運転を行う如くにした複
数個の圧縮機からなる冷凍装置の圧縮機の運転制御方法
に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides compression for a refrigeration system consisting of a plurality of compressors, each of which uses an inverter as its power source, and some of which are turned on and off according to fluctuations in the refrigeration load. Concerning a method for controlling the operation of a machine.
一般にこの種の冷凍装置においてはその電源になるイン
バータが不当に過大な容量を要求されることのない如く
に冷凍装置の複数個の圧縮機の始動に際しては、大なる
突入電流を伴う圧縮機駆動電動機の直入れ始動を行うこ
となく、インバータの出力周波数を低い値から定格周波
数までその出力と共に徐々に上昇させ、最後に前記電動
機の全負荷運転を行わせる如くにする所謂ソフトスター
トによる方法が採用されている。In general, in this type of refrigeration equipment, when starting multiple compressors in the refrigeration equipment, the compressor drive with a large inrush current is required to prevent the inverter that serves as the power source from being required to have an unreasonably large capacity. A so-called soft start method is adopted in which the output frequency of the inverter is gradually increased along with its output from a low value to the rated frequency without directly starting the motor, and finally the motor is operated at full load. has been done.
しかし、当該冷凍装置がその冷凍負荷の変動に従って複
数個の冷凍用圧縮機のうちの一部のオンオフ運転を行う
如くにされている場合には、従来はそれらの停止、再始
動のための操作の簡単化を計るために、オンオフ運転を
行う圧ＩＩａの駆動電動機の電磁開閉器を前記冷凍装置
に設けた圧力スインチあるいは温度スイッチを介して開
閉し、当該駆動電動機の一たん停止後の再始動を直入れ
始動方法で行わせる如くにするのが一部である。その際
電源となるインバータは、冷凍装置の総数Ｎ個の圧縮機
のうち冷凍ａ荷の変動により最大ｎ個の圧縮機を負荷調
整のためにオンオフ運転を行わせるものとすると、
但し １ｓ＝１個の圧縮機駆動電動機の直入れ始動時の
突入電流
ｌｎ＝１個の圧縮機駆動電動機の定格電流Ｋｏ−インバ
ータの過負荷耐量係数
（通常１．５）
によって求められるインバータ電流１０によりその所要
容量が求められる。その場合前記駆動電動機の直入れ始
動時の突入電流１ｓは当該電動機の構成方式によってそ
の定格電流Ｉｎの５ないし１０倍にも達するから、冷凍
装置の圧縮機駆動電動機の総数Ｎに対してオンオフ運転
を行う前記駆動電動機の個数ｎが多くなる程インバータ
に所要の電気容祉もそれだけ大になる。したがってオン
オフ運転を行う前記駆動電動機を一たん停止の後に再始
動するに当って直入れ始動を行う如くにした従来の圧縮
機の運転制御方法においては、オンオフ運転を行うｎ個
の前記駆動電動機が災して折角通常の圧縮機の始動時に
前述の如くにソフトスタートを行わせることによりイン
バータの出力の不当な過大化を阻止する如くにしたにも
かかわらず、インバータが再び大容量かつ大形化するこ
とを免れず冷凍装置のコスト上昇を招くことになるとい
う問題が生ずる。However, when the refrigeration system is configured to turn on and off some of the multiple refrigeration compressors according to fluctuations in the refrigeration load, conventional operations for stopping and restarting them have been In order to simplify the operation, the electromagnetic switch of the pressure IIa drive motor that performs on-off operation is opened and closed via a pressure switch or temperature switch installed in the refrigeration equipment, and the drive motor is restarted after a temporary stop. Part of this is to use a direct-on starting method. In this case, the inverter that serves as the power source is assumed to turn on and off a maximum of n compressors among the total number of N compressors in the refrigeration equipment to adjust the load due to fluctuations in the refrigerated load.However, 1s = 1 Inrush current ln at direct-on startup of 1 compressor drive motor = Rated current Ko of 1 compressor drive motor - Inverter overload capability coefficient (usually 1.5) Inverter current 10 determined by the required capacity. is required. In that case, the inrush current 1s at the time of direct-on startup of the drive motor reaches 5 to 10 times its rated current In depending on the configuration of the motor, so the on-off operation is performed for the total number N of compressor drive motors of the refrigeration system. The larger the number n of drive motors that perform the above operation, the greater the electric power required for the inverter. Therefore, in the conventional compressor operation control method in which a direct start is performed when the drive motors that perform on-off operations are restarted after a temporary stop, the n drive motors that perform on-off operations are Although we tried to prevent the inverter's output from increasing unreasonably by performing a soft start as described above when starting a normal compressor, the inverter again increased in capacity and size. A problem arises in that this inevitably leads to an increase in the cost of the refrigeration equipment.
本発明は複数個の冷凍機用圧縮機のうちの一部をオンオ
フ運転を行うことにより要求される冷凍容量の変動に対
応する如くにした冷凍装置において、オンオフ運転を行
う圧縮機の駆動電動機の再始動の際に直入れ始動を行う
如くにした従来の圧縮機の運転制御方法に伴う前述の如
き問題点を解決し、簡単な手段により前記オンオフ運転
を行う圧縮機の駆動用電動機の始動時の電流を制御し、
電源になるインバータの容量の不当な増大を阻止し、冷
凍装置のコストの低減を計ることを目的とする。The present invention provides a refrigeration system that responds to fluctuations in the required refrigeration capacity by on/off operation of some of a plurality of refrigeration compressors. This invention solves the above-mentioned problems associated with the conventional compressor operation control method that performs a direct start when restarting, and performs the on-off operation by a simple means when starting the compressor driving electric motor. control the current of
The purpose is to prevent unreasonable increases in the capacity of the inverter that serves as the power source, and to reduce the cost of refrigeration equipment.
（問題点を解決するための手段〕
１１記の目的を達成するために本発明ではインバータを
その電源とし、冷凍負荷の変動に従ってその、一部のオ
ンオフ運転を行う如くにした複数個の圧縮機からなる冷
凍装置の圧縮機の運転制？１１方法において、前記オン
オフ運転の行われる圧縮機の駆動電動機をオフにした状
態から際始動するのに際し、運転中の他の圧縮機の駆動
電動機を全て一たんオフにし、前記インバータの適宜の
低い出力と周波数とで前記圧縮機の駆動電動機を一斉に
再始動させ、前記インバータの出力周波数を定格周波数
に達するまでその出力と共に徐々に上ｙさせ、最終的に
前記全圧縮機を所定負荷で運転する如くにするものであ
る。(Means for Solving the Problems) In order to achieve the object described in item 11, the present invention provides a plurality of compressors whose power source is an inverter, and whose operation is partially turned on and off according to fluctuations in the refrigeration load. 11 method for controlling the operation of a compressor in a refrigeration system, when the drive motor of the compressor that undergoes on-off operation is started from the OFF state, all the drive motors of the other compressors in operation are turned off. Once turned off, the drive motors of the compressors are restarted all at once at an appropriately low output and frequency of the inverter, and the output frequency of the inverter is gradually increased along with its output until it reaches the rated frequency, and the final Specifically, all the compressors are operated at a predetermined load.
冷凍負荷の変動に従って一たんオフにした圧縮機の駆動
電動機を前述の如き運転制御方法により再始動させる如
くにすることにより当該電動機の。The drive motor of the compressor, which has been temporarily turned off in response to fluctuations in the refrigeration load, is restarted using the operation control method described above.
始動電流を抑制し、従来の直入れ始動の場合の如き大な
る突入電流を阻止することができるから、インバータに
要求される容量を著しく軽減することができる。Since the starting current can be suppressed and a large inrush current as in the case of conventional direct-on starting can be prevented, the capacity required of the inverter can be significantly reduced.
（実施例〕
次に図面に表された実施例にもとづいて本発明の詳細な
説明する。(Embodiments) Next, the present invention will be described in detail based on embodiments shown in the drawings.
本発明の冷凍装置の圧縮機の駆動電動機の運転制御方法
においては第１図に例示する如く、インバータ■に複数
個の圧縮機の駆動電動機、本実施例の場合簡単にするた
めに連続運転用圧縮機の駆動電動機４とオンオフ運転用
圧縮機の駆動電動機５との２台の運転電動機がそれぞれ
通常の手段により電磁開閉器６及び７のＡ接点６Ａ、及
び７Ａ。As illustrated in FIG. 1, in the method for controlling the operation of the drive motors of the compressors of the refrigeration equipment of the present invention, inverter The two operating motors, the compressor drive motor 4 and the compressor drive motor 5 for on/off operation, are connected to the A contacts 6A and 7A of the electromagnetic switches 6 and 7 by normal means, respectively.
を介して接続されている。一方冷凍装置の圧縮機の運転
制御回路においては第２図に例示する如く、前記駆動電
動機４及び５の運転用スインチ２が設けられた回路に圧
力スイッチ８のＡ接点８Δに直列に接続された前記電磁
開閉器６と、圧力スインチ９のＡ接点９Ａに直列に接続
されたタイマ１０と、該タイマの接点１０Ａに直列に接
続された前記電磁開閉器７、並びに圧力スイッチ９のＢ
接点９Ｂと電磁開閉器７のＡ接点７Ａ、との並列回路に
直列に電磁開閉器６のＡ接点６Ａ、が配された回路に直
列に接続されたインバータ運転用継電器３とがそれぞれ
に設けられている。connected via. On the other hand, in the operation control circuit of the compressor of the refrigeration system, as illustrated in FIG. The electromagnetic switch 6, the timer 10 connected in series to the A contact 9A of the pressure switch 9, the electromagnetic switch 7 connected in series to the contact 10A of the timer, and the B of the pressure switch 9.
A relay 3 for inverter operation is connected in series to a circuit in which the A contact 6A of the electromagnetic switch 6 is arranged in series with a parallel circuit of the contact 9B and the A contact 7A of the electromagnetic switch 7. ing.
前述の如くに構成された圧縮機の運転制御回路において
、各圧縮機の駆動電動ａ４及び５の運転用スイッチ２を
投入すると、圧力スイッチ８及び９のＡ接点８Ａ及び９
Ａが共に閉路している場合、電磁開閉器６が動作して前
記駆動電動８！１４の給電回路のＡ接点６Ａ、 とイ
ンバータ運転用継電器３の回路のＡ接点６ Ａ ｚ と
が閉路する。それと同時に圧力スイッチ９のＡ接点９
Ａ Ｉ を介してタイマ１０が動作し所定の時間（通常
は１５秒程度）経過後にその接点１０Ａが閉路して電磁
開閉器７が動作し、前記駆動電動機５の給電回路の給電
回路のＡ接点７Ａ、が閉路するとともに、インバータ運
転用ｍ電器３の回路においては圧力スイッチ９のＢ接点
９Ｂが開路する代りに電磁開閉器７のＡ接点ＩＡｔが閉
路するから、インバータ運転用継電器３が動作しその接
点３Ａが閉路しインバータ１が先ずその低周波出力を前
記駆動電動機４及び５に給電してこれらを始動させる。In the compressor operation control circuit configured as described above, when the operation switch 2 of the drive electric motors A4 and 5 of each compressor is turned on, the A contacts 8A and 9 of the pressure switches 8 and 9 are turned on.
When A are both closed, the electromagnetic switch 6 operates to close the A contact 6A of the power supply circuit of the drive motor 8!14 and the A contact 6A of the circuit of the inverter operation relay 3. At the same time, the A contact 9 of the pressure switch 9
The timer 10 operates via A I, and after a predetermined period of time (usually about 15 seconds) has elapsed, its contact 10A closes, the electromagnetic switch 7 operates, and the A contact of the power supply circuit of the drive motor 5 is closed. 7A is closed, and in the circuit of the inverter operating electric device 3, the A contact IAt of the electromagnetic switch 7 is closed instead of the B contact 9B of the pressure switch 9 being opened, so the inverter operating relay 3 is activated. The contact 3A is closed and the inverter 1 first supplies its low frequency output to the drive motors 4 and 5 to start them.
したがってこの場合には従来の直入れ始動の場合の如く
に大なる突入電流は発生しない。その後インバータｌの
出力を周波数と共に徐々に上昇させ定格周波数にいたり
前記駆動電動！！！４及び５に定格回転数で所定の負荷
運転を行わせる如くにする。Therefore, in this case, a large inrush current does not occur as in the case of conventional direct-on starting. After that, the output of the inverter l is gradually increased along with the frequency until it reaches the rated frequency. ! ! 4 and 5 to perform a predetermined load operation at the rated rotation speed.
次に圧縮機の駆動電動機４及び５が共に運転中に冷凍負
荷が減少し蒸発圧力が所定の値にまで低下すると圧力ス
イッチ８はそのままであるが圧力スイッチ９が動作し、
そのＡ接点９Ａが開路するから、タイマ１０の接点１０
Ａも開路し電磁開閉器７のＡ接点？ＡＩ 、？Ａｔが共
に開路してオンオフ運転を行う冷凍機の駆動電動機５が
停止する。Next, while the drive motors 4 and 5 of the compressor are both in operation, when the refrigeration load decreases and the evaporation pressure drops to a predetermined value, the pressure switch 8 remains as it is, but the pressure switch 9 operates.
Since the A contact 9A is opened, the contact 10 of the timer 10
Is A also open and the A contact of electromagnetic switch 7? AI? Both At are opened, and the drive motor 5 of the refrigerator that performs on/off operation is stopped.
その場合インバータ運転用継電器３の回路では電磁開閉
器７のＡ接点ＩＡｚの開路に代って圧力スイッチ９のＢ
接点９Ｂが閉路するから前記継電器３の接点３Ａは閉路
を維持し、インバータ１はその運転を継続するから連続
運転用圧縮機の駆動電動機４は引き続き運転され、圧縮
装置は減少した冷凍負荷に対応した運転を継続する。In that case, in the circuit of the inverter operating relay 3, instead of opening the A contact IAZ of the electromagnetic switch 7, the B of the pressure switch 9 is opened.
Since the contact 9B is closed, the contact 3A of the relay 3 remains closed, and the inverter 1 continues its operation, so the drive motor 4 of the continuous operation compressor continues to operate, and the compressor copes with the reduced refrigeration load. Continue to drive as directed.
その後冷凍負荷が再び増大し蒸発圧力が上昇すると再び
圧力スイッチ９が動作しそのＡ接点９Ａが閉路すると同
時にＢ接点９Ｂが開路し、かつ該Ｂ接点９Ｂに並列に接
続された電磁開閉器７のＡ接点７１ も開路したままで
あるからインバータ運転継電器３の接点３Ａが開路しイ
ンバータ１が運転を停止する。その結果その時点まで運
転していた連続運転用の圧縮機の駆動電動機４に対する
給電が電磁開閉器６のＡ接点６Ａ、の閉路したままで中
断され、ここに冷凍装置全体がその運転を停止したこと
になる。After that, when the refrigeration load increases again and the evaporation pressure rises, the pressure switch 9 operates again, its A contact 9A closes, and at the same time its B contact 9B opens, and the electromagnetic switch 7 connected in parallel to the B contact 9B opens. Since the A contact 71 also remains open, the contact 3A of the inverter operation relay 3 is opened and the inverter 1 stops operating. As a result, the power supply to the drive motor 4 of the continuous operation compressor, which had been operating up to that point, was interrupted with the A contact 6A of the electromagnetic switch 6 remaining closed, and the entire refrigeration system stopped its operation. It turns out.
しかしその際既に圧力スイッチ９が再動作してその人接
点９Ａが閉路しているからタイマ１０が再動作しており
、したがってその再動作後約１５秒するとその接点１０
Ａが閉路しそのＡ接点７Ａ、、７Ａ、とが共に閉路する
からインバータ運転用継電器３が再び電磁開閉器６のＡ
接点６Ａ２ と電磁開閉器７のＡ接点ＩＡｚを介して動
作しその接点３Ａが閉路してインバータ１が再び出力す
る。その結果前述の冷凍装置全体が運転停止するのはほ
ぼ１５秒間と極めて短時間で終り、圧縮機の駆動電動機
４及び５は共に前述の如くソフトスタートにより再び運
転に入り所定の負荷運転を行うことになる。したがって
インバータ１は前記冷凍装置の電源として全圧縮機の駆
動電動機の始動時にもまたオンオフ用圧縮機の駆動電動
機のオフ後の再始動時にも直入れ始動の場合の如き突入
電流を生じないから不当に容量を要求されることはない
。However, at that time, the pressure switch 9 has already restarted and the contact 9A has closed, so the timer 10 has restarted, and therefore, approximately 15 seconds after the restart, the contact 10
Since A is closed and its A contacts 7A, , 7A are both closed, the inverter operation relay 3 is again connected to A of the electromagnetic switch 6.
It operates via the contact 6A2 and the A contact IAz of the electromagnetic switch 7, the contact 3A is closed, and the inverter 1 outputs again. As a result, the entire refrigeration system described above stops operating in a very short period of time, approximately 15 seconds, and both the drive motors 4 and 5 of the compressor restart by soft start as described above and perform the specified load operation. become. Therefore, the inverter 1 is used as a power source for the refrigeration equipment, and neither when the drive motor of all the compressors is started nor when the drive motor of the on/off compressor is restarted after being turned off, it does not generate an inrush current unlike in the case of a direct start. No capacity is required.
その際前記冷凍装置全体が運転を停止するのはわずかに
１５秒であるから前記冷凍装置の冷凍能力に悪影響を及
ぼす虞れはない。At this time, since the entire refrigeration system stops operating for only 15 seconds, there is no possibility that the refrigeration capacity of the refrigeration system will be adversely affected.
本発明の冷凍装置の圧縮機の運転制御方法による圧縮機
の運転経過のタイムチャートは第３図に例示する如くに
なる。A time chart of the operation progress of the compressor according to the compressor operation control method for a refrigeration system according to the present invention is illustrated in FIG.
本発明は以上に説明した如くインバータをその電源とし
、冷凍負荷の変動に従ってその一部をオンオフ運転を行
う如くにした複数個の圧縮機からなる冷凍装置の圧１Ｉ
ｉ１機の運転制御方法において、前記オンオフ運転の行
われる圧８？１機の駆動電動機をオフにした状態から再
始動するのに際し、運転中の他の圧Ｉｌ？ｉ機の駆動電
動ａｔ全て一たんオフにし、前記インバータの適宜の低
い出力と周波数々で前記圧縮機の駆動電動機を一斉に再
始動させ、前記インバータの出力周波数を定格周波数に
達するまでその出力と共に徐々に上昇させ、最終的に前
記全圧′４′ｒ６Ｉａを所定負荷で運転する如くにする
ことにより、前記冷凍装置の圧縮機の通常の始動時にも
またオンオフ用圧縮機の再始動時にも圧縮機の駆動電動
機をインバータの低出力低周波数域で始動し定格周波数
まで徐々に上昇させる所謂ソフトスタートを行い始動電
流を抑制し突入電流が生じない如くにしたから、ｉｔ源
となるインバータに不当に大なる容攪を必要とせず、し
たがってまた冷凍装置のコスト低減を計り得る効果があ
る。As explained above, the present invention is directed to a refrigeration system which uses an inverter as its power source and which is configured to operate at a pressure of 1 I
In the operation control method for the I1 machine, when restarting the drive motor of the I1 machine from the OFF state where the above-mentioned on-off operation is performed, the other pressure Il? Turn off all the drive motors of the i machine, restart the drive motors of the compressors all at once at appropriate low outputs and frequencies of the inverters, and increase the output frequency of the inverters together with the output until the rated frequency is reached. By gradually increasing the total pressure '4'r6Ia and finally operating at a predetermined load, the compressor of the refrigeration system can be compressed both during normal startup and when the on/off compressor is restarted. The machine's drive motor is started in the inverter's low-output, low-frequency range and gradually raised to the rated frequency by a so-called soft start, which suppresses the starting current and prevents inrush current from occurring. It does not require a large volume of stirring, and therefore has the effect of reducing the cost of the refrigeration equipment.
第１図は本発明の冷凍設備の圧縮機の運転制御方法にお
ける各圧縮機の駆動電動機に対するインバータの給電回
路を例示する概略結線図を、第２図は前記運転制御方法
における前記圧縮機の駆動電動機の運転制御回路の概略
結線図を、第３図は本発明の前記運転制御方法における
各圧縮機の運転経過のタイムチャートを表わす。
１・・・インバータ、４・・・連続運転用圧縮機の駆動
電動機、５・・・オンオフ運転用圧縮機の駆動電動機。FIG. 1 is a schematic connection diagram illustrating an inverter power supply circuit for the drive motor of each compressor in the method for controlling the operation of a compressor in a refrigeration equipment according to the present invention, and FIG. FIG. 3 shows a schematic connection diagram of the operation control circuit of the electric motor, and FIG. 3 shows a time chart of the operation progress of each compressor in the operation control method of the present invention. DESCRIPTION OF SYMBOLS 1... Inverter, 4... Driving motor of the compressor for continuous operation, 5... Drive motor of the compressor for on/off operation.
Claims (1)
てその一部をオンオフ運転を行う如くにした複数個の圧
縮機からなる冷凍装置の圧縮機の運転制御方法において
、前記オンオフ運転の行われる圧縮機の駆動電動機をオ
フにした状態から再始動するに際し、運転中の他の圧縮
機の駆動電動機を全て一たんオフにし、前記インバータ
の適宜の低い出力と周波数とで前記圧縮機の駆動電動機
を一斉に再始動させ、前記インバータの出力周波数を定
格周波数に達するまでその出力と共に徐々に上昇させ最
終的に前記全圧縮機を所定負荷で運転する如くにするこ
とを特徴とする冷凍装置の圧縮機の運転制御方法。1) In a method for controlling the operation of a compressor in a refrigeration system comprising a plurality of compressors using an inverter as a power source, some of which are operated on and off according to fluctuations in the refrigeration load, the compressor is operated on and off. When restarting from a state where the drive motor of the compressor is turned off, all the drive motors of the other compressors in operation are temporarily turned off, and the drive motors of the compressors are simultaneously turned off with an appropriately low output and frequency of the inverter. The compressor for a refrigeration system is characterized in that the output frequency of the inverter is gradually increased along with its output until it reaches a rated frequency, and finally all the compressors are operated at a predetermined load. Operation control method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62099071A JPS63266179A (en) | 1987-04-22 | 1987-04-22 | Operation control method for compressor of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62099071A JPS63266179A (en) | 1987-04-22 | 1987-04-22 | Operation control method for compressor of refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63266179A true JPS63266179A (en) | 1988-11-02 |
Family
ID=14237643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62099071A Pending JPS63266179A (en) | 1987-04-22 | 1987-04-22 | Operation control method for compressor of refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63266179A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073387A (en) * | 1990-01-24 | 1991-12-17 | Lafayette Applied Chemistry, Inc. | Method for preparing reduced calorie foods |
| JP2013015281A (en) * | 2011-07-05 | 2013-01-24 | Daikin Industries Ltd | Condensing unit set and refrigeration device equipped with the same |
| US11649998B2 (en) * | 2018-03-23 | 2023-05-16 | Sumitomo Heavy Industries, Ltd. | Cryocooler |
-
1987
- 1987-04-22 JP JP62099071A patent/JPS63266179A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073387A (en) * | 1990-01-24 | 1991-12-17 | Lafayette Applied Chemistry, Inc. | Method for preparing reduced calorie foods |
| JP2013015281A (en) * | 2011-07-05 | 2013-01-24 | Daikin Industries Ltd | Condensing unit set and refrigeration device equipped with the same |
| US11649998B2 (en) * | 2018-03-23 | 2023-05-16 | Sumitomo Heavy Industries, Ltd. | Cryocooler |
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