JPS62203595A - Method for frequency control of air conditioner - Google Patents
Method for frequency control of air conditionerInfo
- Publication number
- JPS62203595A JPS62203595A JP61043027A JP4302786A JPS62203595A JP S62203595 A JPS62203595 A JP S62203595A JP 61043027 A JP61043027 A JP 61043027A JP 4302786 A JP4302786 A JP 4302786A JP S62203595 A JPS62203595 A JP S62203595A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- current value
- current
- air conditioner
- maximum
- 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
- 238000000034 method Methods 0.000 title claims description 15
- 230000007423 decrease Effects 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 238000005057 refrigeration Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002708 enhancing effect 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
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
- Air Conditioning Control Device (AREA)
- Motor And Converter Starters (AREA)
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は周波数変換装置（インバータ）を利用した空
気調和機の周波数制御方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a frequency control method for an air conditioner using a frequency conversion device (inverter).
第７図は一般的な周波数変換装置を有する空気調和機に
おける制御系を示すブロック図であり、図において、１
は電源プラグ、２は供給された交流電流を整流するコン
バータ部、３は周波数変換部であって、圧縮Ｊａ４に周
波数変換した電源を供給している。５はマイコン等を搭
載した制御回路部であり、室温センサ６および室温設定
器７の出力信号より圧縮機４の運転周波数を決定して周
波数変換部３の変換周波数を制御している。また、８は
カレントトランス等により入力電流を検知する電流検出
器であって、その出力を制御回路部５に供給することに
より、入力電流が所定の値を越えないよう周波数変換部
３の周波数を制御している。FIG. 7 is a block diagram showing a control system in an air conditioner having a general frequency conversion device.
2 is a power plug, 2 is a converter unit that rectifies the supplied alternating current, and 3 is a frequency conversion unit, which supplies frequency-converted power to the compressed Ja4. Reference numeral 5 denotes a control circuit section equipped with a microcomputer, etc., which determines the operating frequency of the compressor 4 from the output signals of the room temperature sensor 6 and the room temperature setter 7, and controls the conversion frequency of the frequency conversion section 3. Reference numeral 8 denotes a current detector that detects the input current using a current transformer or the like, and by supplying its output to the control circuit section 5, the frequency of the frequency conversion section 3 is controlled so that the input current does not exceed a predetermined value. It's in control.
以上のように構成された周波数変換装置をもつ空気調和
機の起動時における周波数制御方法は、例えば特公昭６
０−１８８９９号公報により示された第８図の如く行な
われる。まず、起動直後は一定時間Δｔｓにわたって低
周波数ｆｓを一定にして運転し、Δｔｓ経過後の時点ｔ
ｌにおいて、室温センサ６と室温設定器７との温度偏差
ΔＴ、により制御回路部５においてΔｆ１なる周波数増
分が決定される。ただし、通常の起動時においては、室
温と設定温度の温度偏差が大きく、Δｒ、なる増分にて
運転しようとしても装置の最大周波数ｆ ｍａｘを越し
てしまう場合には、この最大周波数ｆ ｍａｘで運転さ
れることになる。A frequency control method at the time of startup of an air conditioner having a frequency converter configured as described above is, for example,
This is carried out as shown in FIG. 8 shown in Japanese Patent No. 0-18899. First, immediately after startup, the operation is performed with the low frequency fs constant for a certain period of time Δts, and after Δts has elapsed, the operation is performed at a constant low frequency fs.
1, a frequency increment of Δf1 is determined in the control circuit section 5 based on the temperature deviation ΔT between the room temperature sensor 6 and the room temperature setting device 7. However, during normal startup, if the temperature deviation between the room temperature and the set temperature is large and the device's maximum frequency f max is exceeded even if it attempts to operate at an increment of Δr, the device will be operated at this maximum frequency f max. will be done.
次に時点ｔ２においては、温度偏差ΔＴ２が検出される
ことにより、制御回路部５からはΔｆ２を加算した周波
数が指定される。しかし、既に最大周波数ｆ ｍａｘで
運転しているのでこれ以上周波数は上がらずに運転され
る。これに対して、時点ｔ６では室温が決定温度より低
くなっているために温度偏差は一Δｔ、となり、制御回
路部５はΔｆ６だけ周波数を減じるように周波数変換部
３を制御して運転が続けられる。そして、このような制
御動作をフローチャートによって表わすと、第９図に示
すようになる。Next, at time t2, the temperature deviation ΔT2 is detected, and the control circuit unit 5 designates a frequency to which Δf2 is added. However, since it is already operating at the maximum frequency f max, the frequency will not increase any further and will continue to operate. On the other hand, at time t6, the room temperature is lower than the determined temperature, so the temperature deviation is -Δt, and the control circuit unit 5 controls the frequency conversion unit 3 to reduce the frequency by Δf6, and the operation continues. It will be done. If such a control operation is represented by a flowchart, it will be as shown in FIG.
しかしながら、起動時においては室温と設定温度の温度
偏差は大きく、室温を早く設定温度に近づけたいわけで
あるが、このためには起動時点より装置の最大能力を発
揮すべく最大周波数ｆ ｍａｘにて運転されるべきであ
るが、第１０図に示すように運転周波数を最初から最大
周波数ｆ ｍａｘにて運転すると、ｔａ時間経過後に入
力電流が所定の電流上限値■を越えてしまうので周波数
を減じ始めるが、冷凍サイクル側の負荷変動の時間遅れ
により周波数を滅じても入力端子はすぐには減少せず、
ｔｂ時間後に破線で示したブレーカ−等により保護され
る遮断電流値ｌ、を越えてしまうことから、圧縮機の運
転が停止してしまう。このために、従来の周波数制御に
おいては、起動時にある一定時間Δｔｓにわたって、冷
凍サイクルの負荷変動が安定するまで最大周波数運転を
行なわせることができないといった問題点があった。However, at the time of startup, the temperature deviation between the room temperature and the set temperature is large, and it is necessary to bring the room temperature closer to the set temperature as soon as possible. However, as shown in Fig. 10, if the operating frequency is set to the maximum frequency f max from the beginning, the input current will exceed the predetermined upper current limit ■ after time ta has elapsed, so the frequency must be reduced. However, even if the frequency decreases due to the time delay of load fluctuation on the refrigeration cycle side, the input terminal does not decrease immediately.
After time tb, the breaking current value l, which is protected by a breaker or the like indicated by the broken line, is exceeded, and the compressor stops operating. For this reason, conventional frequency control has a problem in that it is not possible to operate at the maximum frequency over a certain period of time Δts at startup until the load fluctuation of the refrigeration cycle is stabilized.
この発明は上記のような問題を解消するためになされた
もので、起動と同時に最大周波数にて運転を行っても、
入力電流が遮断電流値■、を超えないような周波数制御
方法を提供することを目的とする。This invention was made to solve the above problems, and even if the operation is performed at the maximum frequency at the same time as startup,
The purpose of this invention is to provide a frequency control method that prevents the input current from exceeding the cut-off current value.
この発明による空気調和機の周波数制御方法は、ある一
定時開先まで記憶した入力電流値と現在の入力電流値か
ら一定時間先の電流値を計算し、この計算された電流値
と最大入力電流制御域との比較により運転周波数の増減
を行なうようにしたものである。The frequency control method for an air conditioner according to the present invention calculates a current value a certain time ahead from an input current value stored up to a certain time and a current input current value, and then combines this calculated current value with the maximum input current. The operating frequency is increased or decreased based on comparison with the control range.
この発明における空気調和機の周波数制御方法は、一定
時開先まで記憶した入力電流値と現時点の入力電流値の
関係から一定時間先までの電流値を計算し、この計算に
より求められた電流値と最大入力電流制御域とを比較す
ることにより、入力端子が遮断電流Ｉ、を越えないよう
に制御しているために、起動直後から最大周波数で圧縮
機を運転することが可能になり、これに伴って室温を早
く設定温度に近ずけることが可能になる。The frequency control method for an air conditioner according to the present invention calculates the current value up to a certain time from the relationship between the input current value stored up to a certain time and the current input current value, and then calculates the current value obtained by this calculation. By comparing the maximum input current control range and the maximum input current control range, the input terminal is controlled so that it does not exceed the cutoff current I, which makes it possible to operate the compressor at the maximum frequency immediately after startup. Accordingly, it becomes possible to bring the room temperature closer to the set temperature quickly.
〔発明の実施例〕
以下、この発明の一実施例を図について説明する。第１
図は第７図における制御系を示すブロック図であって、
同一部分は同記号を用いて示しである。同図において１
０は制御回路部であって、第７図における制御回路部５
に相当する部分である。１）は一定時間間隔ｔごとに電
流検出器８から供給される入力電流を取り込むレジスタ
、１２は上記レジスタ１）で取り込んだ値を逐次新しい
電流値に置き換えていく複数個（ｎ個）の電流値記憶部
、１３は上記レジスタＩＩと電流値記憶部１２とにより
一定時間間隔の電流値Ｉ、を計算する演算部、１４は最
大入力端子の制御域の上下限電流値（ＩＮ、ＩＬ）記憶
部、１５は上記演算部１３の出力と上下限電流値記憶部
１４の出力を基として周波数の増減を指定する周波数増
減指定部、１６は室温センサ６と室温設定器７との温度
差に応じて目標周波数を決める目標周波数設定部、１７
は上記周波数増減指定部１５と目標周波数設定部１６と
により運転周波数を決定し、その運転周波数を次段の周
波数変換装置３へ送り出す周波数出力部である。[Embodiment of the Invention] An embodiment of the invention will be described below with reference to the drawings. 1st
The figure is a block diagram showing the control system in FIG. 7,
Identical parts are indicated using the same symbols. In the same figure, 1
0 is a control circuit section, which is the control circuit section 5 in FIG.
This is the part corresponding to . 1) is a register that takes in the input current supplied from the current detector 8 at regular time intervals t, and 12 is a plurality of (n) currents that sequentially replace the values taken in by register 1) with new current values. 13 is a calculation unit that calculates the current value I at a fixed time interval using the register II and the current value storage unit 12; 14 is a storage unit for storing the upper and lower limit current values (IN, IL) of the control range of the maximum input terminal; 15 is a frequency increase/decrease specifying section for specifying an increase/decrease in frequency based on the output of the arithmetic section 13 and the output of the upper/lower limit current value storage section 14; a target frequency setting section for determining a target frequency; 17;
is a frequency output section which determines the operating frequency by the frequency increase/decrease designating section 15 and the target frequency setting section 16 and sends out the operating frequency to the frequency conversion device 3 at the next stage.
このように構成された制御回路１０の動作を第２図に示
すフローチャートを用いて説明する。装置を起動すると
、目標周波数設定部１Ｇにおいては、室温センサ６と室
温設定器７との温度差に応じて目標周波数ｆＭが設定さ
れる。また、運転と同時に制御回路１０におけるレジス
タ１）が一定時間間隔【ごとに現在の電流値を読み込み
、逐次複数個（ｎ個）の電流値記憶部１２にデータを送
り出すことにより、第３図に示すように００時点におい
ては、ＬｏからｎＸｔ時間前までの電流値Ｉ−１〜Ｉ−
，が記憶され、次の読み込みが行なわれる１時間後の１
）時においては、レジスタ１）は新しい電流値■１を読
み込んで以前の電流値■。を電流値記憶部１２に送り出
す。電流値記憶部１２においては、記憶されている一番
古い電流値！。The operation of the control circuit 10 configured as described above will be explained using the flowchart shown in FIG. When the apparatus is started, the target frequency fM is set in the target frequency setting section 1G according to the temperature difference between the room temperature sensor 6 and the room temperature setter 7. In addition, at the same time as operation, the register 1) in the control circuit 10 reads the current current value at fixed time intervals and sequentially sends the data to a plurality of (n) current value storage units 12, as shown in FIG. As shown, at time 00, the current values I-1 to I- from Lo to nXt time ago
, is memorized and the next reading is performed after 1 hour.
), register 1) reads the new current value ■1 and the previous current value ■. is sent to the current value storage section 12. In the current value storage unit 12, the oldest stored current value! .
が捨てられ、【。〜Ｉ −ｎｉｌの電流値が記憶される
。was thrown away, [. A current value of ~I-nil is stored.
このように記憶されたｎ個の電流値と現在の電流値を使
って、Ｔ時間後の電流値Ｉ７を演算部１３が次式により
計算する。Using the n current values stored in this manner and the current current value, the calculation unit 13 calculates the current value I7 after T time using the following equation.
（Ａｉは定数）・・・・・・・・・・・・・・・（１）
次に、周波数増減指定部１５においては、上記計算式（
１）により計算された電流値■７と制御電流域の上限値
■、と下限値ＩＬとから次式（２）のように周波数の増
減を決定し、
そして、周波数出力部１７においては、上記周波数の増
減指定により次の運転周波数
ｆ＋＝ｆｏ” ｆ ｃ （ｆｏは現在の運転周波数）
・・・・・・（３）と目標周波数ｆ９とを比較して、低
い方の周波数を次段に出力する。(Ai is a constant)・・・・・・・・・・・・・・・(1)
Next, in the frequency increase/decrease designation section 15, the above calculation formula (
The frequency increase/decrease is determined from the current value ■7 calculated in 1), the upper limit value ■ of the control current range, and the lower limit value IL as shown in the following equation (2). By specifying frequency increase/decrease, the next operating frequency f+=fo” f c (fo is the current operating frequency)
...(3) is compared with the target frequency f9, and the lower frequency is output to the next stage.
第４図を用いて本動作を具体的に説明すると、起動直後
においては室温センサ６と室温設定器７との温度偏差は
大きく、目標周波数設定部１６においては最大周波数ｒ
ｔａａｘが設定され、装置はこの最大周波数ｆ ｍａ
ｘで運転される。運転開始後、冷凍サイクル側での負荷
の増大とともに一次電流値が上昇し、時間Ｌ０において
はレジスタ１）の電流値Ｉ。と電流値記憶部■２に記憶
されているＩ−１゜１−ＸＩ Ｉ−３＋ １−４の
４個の電流値から計算したＴ時間後の電流値！１は最大
入力電流制御域の上限値ＩＨを越してしまう。このため
に、周波数増減指定部１５はｆ ｃ−−Δｒとなり、周
波数出力部１５はｆ ｌ”ｆｌＩ＋＠Ｘ−ΔｆとｆＭ＝
ｆ＋＋＋ｍｘが比較され、次段の周波数変換装置３には
運転周波数ｆ、が出力される。To specifically explain this operation using FIG. 4, immediately after startup, the temperature deviation between the room temperature sensor 6 and the room temperature setting device 7 is large, and the maximum frequency r in the target frequency setting section 16 is
taax is set and the device uses this maximum frequency f max
It is driven by x. After the start of operation, the primary current value increases as the load on the refrigeration cycle side increases, and at time L0, the current value I of register 1). and the current value after T time calculated from the four current values I-1゜1-XI I-3+ 1-4 stored in the current value storage unit ■2! 1 exceeds the upper limit value IH of the maximum input current control range. For this reason, the frequency increase/decrease designation unit 15 becomes f c−−Δr, and the frequency output unit 15 outputs f l”flI+@X−Δf and fM=
f+++mx is compared, and the operating frequency f is output to the frequency conversion device 3 at the next stage.
次に時間１．においては、上記と同様に■ア＞Ｉｎとな
り、運転周波数はさらにΔｒ下った周波数ｆ２にて運転
される。時間ｔ２においては、■、≦■７≦ＩＮとなる
ので、次の運転周波数ｆ＋は１２時の周波数が維持され
、時間ｔ３においてはＩＴ＜ＩＬとなるので、次の運転
周波数１４は１３時よりΔｒだけ上昇した周波数によっ
て運転される。Next time 1. Similarly to the above, ①A>In, and the operating frequency is further lowered by Δr, f2. At time t2, ■≦■7≦IN, so the next operating frequency f+ maintains the 12 o'clock frequency, and at time t3, IT<IL, so the next operating frequency 14 starts from 13:00. It is operated with a frequency increased by Δr.
なお、上記実施例においては、電流値Ｉｔを計算する定
数Ａ、に関してａｔ＞ａｚ＞・・・・・・ａ、ｌとして
新しい電流値の偏差の影響度を重くして１）を推測する
ことにより、急激な変化に対してもすばやく最大入力電
流制御域の上゛限値Ｉ）ｌを越えることを察知し、遮断
電流値Ｉ３に至ることを防止することができその効果を
一層高めることができる。In the above embodiment, regarding the constant A for calculating the current value It, at>az>...a,l, the influence of the deviation of the new current value is weighted to estimate 1). Therefore, it is possible to quickly detect that the upper limit value I) of the maximum input current control range is exceeded even in the case of a sudden change, and to prevent the current from reaching the cut-off current value I3, further enhancing the effect. can.
また上記実施例では入力電流を制御する場合について説
明したが、第５図に示す如く、コンバータ部３により整
流された直流電流をシャント抵抗器等の電流検出器１８
により検出して上記と同等の方法を用いて制御しても同
等の効果を得ることができる。Further, in the above embodiment, a case has been described in which the input current is controlled, but as shown in FIG.
The same effect can be obtained by detecting this and controlling it using the same method as above.
また第５図に破線で示した従来の一次電流検出器８とを
併用して、それぞれの電流の最大制御電流域を設定し、
第６図に示す如く一次電流からの周波数増減指数部１９
のｆ ｅｌと二次電流からの周波数増減指数部２０のｆ
ｃ２とで決まる運転周波数と目標周波数ｆ。と−を比較
することにより最も低い周波数で運転するように制御す
ればさらに、その効果を高めることができる。In addition, the maximum control current range of each current is set by using the conventional primary current detector 8 shown by the broken line in FIG.
As shown in FIG. 6, the frequency increase/decrease index part 19 from the primary current
f el and f of the frequency increase/decrease exponent part 20 from the secondary current
The operating frequency and target frequency f determined by c2. The effect can be further enhanced by controlling to operate at the lowest frequency by comparing and -.
以上のように、この発明によれば過去の電流経歴により
先の電流値を予測して装置の電流値が最大制御電流域を
越さないように運転１ｔｉ制御するものであることから
、起動当所から運転周波数を最大周波数にて運転しても
遮断による運転停止を防ぐことができるばかりでなく、
送風機等の風量変化。As described above, according to the present invention, the previous current value is predicted based on the past current history and the operation is controlled so that the current value of the device does not exceed the maximum control current range. Even if the operating frequency is set to the maximum frequency from
Changes in air volume from blowers, etc.
負荷の急変に対しても効果を発揮し、また装置の最大能
力運転を行なうことができ、室温を所定の設定温度にす
ばやく到達させることができる効果がある。It is also effective against sudden changes in load, allows the device to operate at its maximum capacity, and has the effect of quickly bringing the room temperature to a predetermined set temperature.
第１図はこの発明による空気調和機の周波数制御方法を
説明するための制御系のブロック図、第２図は第１図の
動作を示すフローチャート、第３図は第１図に示す電流
値記憶部の記憶方法を説明するための図、第４図はこの
発明による制御方法を説明するための図、第５図はこの
発明の他の実施例を示すためのブロック図、第６図は第
５図に示す制御回路部を示すブロック図、第７図は従来
の周波数変換装置を有する空気調和機における制御系を
示すブロック図、第８図は第７図における周波数制御方
法を説明するための図、第９図は第７図の動作を説明す
るためのフローチャート、第１０図は第７図における空
気調和機の周波数制御方法を説明するための図である。
６は室温センサ、７は室温設定器、８は電流検出器、１
０は制御回路部、１）はレジスタ、１２は電流値記憶部
、１３は演算部、１４は上下限電流値記憶部、１５は周
波数増減指定部、１６は目標周波数設定部、１７は周波
数出力部。
なお、図中、同一符号は同一、又は相当部分を示す。Fig. 1 is a block diagram of a control system for explaining the frequency control method of an air conditioner according to the present invention, Fig. 2 is a flowchart showing the operation of Fig. 1, and Fig. 3 is a current value storage shown in Fig. 1. FIG. 4 is a diagram for explaining the control method according to the present invention, FIG. 5 is a block diagram showing another embodiment of the present invention, and FIG. 5 is a block diagram showing the control circuit section, FIG. 7 is a block diagram showing a control system in an air conditioner having a conventional frequency conversion device, and FIG. 8 is a block diagram showing the frequency control method shown in FIG. 7. 9 is a flowchart for explaining the operation of FIG. 7, and FIG. 10 is a diagram for explaining the frequency control method of the air conditioner in FIG. 7. 6 is a room temperature sensor, 7 is a room temperature setting device, 8 is a current detector, 1
0 is a control circuit section, 1) is a register, 12 is a current value storage section, 13 is a calculation section, 14 is an upper/lower limit current value storage section, 15 is a frequency increase/decrease designation section, 16 is a target frequency setting section, and 17 is a frequency output Department. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (4)
置を有する能力可変タイプの空気調和機において、最大
入力電流の制御域（上限値Ｉ＿Ｈ，下限値Ｉ＿Ｌ）を設
定するとともに入力電流を一定時間ｔごとに取り込んで
複数個の記憶部にその値を逐次書き込み、記憶された過
去の電流値Ｉ＿−＿１〜Ｉ＿−＿ｎと現時点に取り込ん
だ電流値Ｉ＿０とからある一定時間Ｔ後の入力電流値Ｉ
＿Ｔを時間ｔごとに計算し、この入力電流値Ｉ＿Ｔの値
がＩ＿Ｔ＜Ｉ＿Ｌのときは周波数を上げるように制御し
、Ｉ＿Ｌ≦Ｉ＿Ｔ≦Ｉ＿Ｈのときは現状周波数を維持し
、Ｉ＿Ｔ＞Ｉ＿Ｈのときは周波数を下るように圧縮機運
転周波数を制御することを特徴とする空気調和機の周波
数制御方法。(1) In a variable capacity air conditioner that has a frequency converter that changes the operating frequency of the compressor, a control range for the maximum input current (upper limit I_H, lower limit I_L) is set and the input current is controlled for a certain period of time t. The input current value I after a certain period of time T is obtained from the stored past current values I_-_1 to I_-_n and the current value I_0 taken at the present time.
_T is calculated every time t, and when the value of this input current value I_T is I_T<I_L, the frequency is controlled to increase, when I_L≦I_T≦I_H, the current frequency is maintained, and when I_T>I_H, the current frequency is maintained. A frequency control method for an air conditioner, characterized in that the compressor operating frequency is controlled to lower the frequency.
の新しいものほどその影響力を強くしたことを特徴とす
る特許請求の範囲第１項記載の空気調和機の周波数制御
方法。(2) The frequency control method for an air conditioner according to claim 1, wherein when calculating the input current value I_T, the more recent the past current value is, the stronger its influence is.
二次電流により圧縮機運転周波数を制御したことを特徴
とする特許請求の範囲第１項記載の空気調和機の周波数
制御方法。(3) The frequency control method for an air conditioner according to claim 1, wherein the compressor operating frequency is controlled by a secondary current obtained by rectifying the input current supplied to the frequency converter.
数を制御したことを特徴とする特許請求の範囲第３項記
載の空気調和機の周波数制御方法。(4) The frequency control method for an air conditioner according to claim 3, wherein the compressor operating frequency is controlled using both an input current and a secondary current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61043027A JPH0789754B2 (en) | 1986-02-28 | 1986-02-28 | Air conditioner frequency control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61043027A JPH0789754B2 (en) | 1986-02-28 | 1986-02-28 | Air conditioner frequency control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62203595A true JPS62203595A (en) | 1987-09-08 |
| JPH0789754B2 JPH0789754B2 (en) | 1995-09-27 |
Family
ID=12652463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61043027A Expired - Lifetime JPH0789754B2 (en) | 1986-02-28 | 1986-02-28 | Air conditioner frequency control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0789754B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0861247A (en) * | 1994-06-28 | 1996-03-08 | Samsung Electronics Co Ltd | Equipment and method of controlling operation of air conditioner |
| CN108278714A (en) * | 2017-01-04 | 2018-07-13 | 奥克斯空调股份有限公司 | A kind of control method of air-conditioning |
-
1986
- 1986-02-28 JP JP61043027A patent/JPH0789754B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0861247A (en) * | 1994-06-28 | 1996-03-08 | Samsung Electronics Co Ltd | Equipment and method of controlling operation of air conditioner |
| CN108278714A (en) * | 2017-01-04 | 2018-07-13 | 奥克斯空调股份有限公司 | A kind of control method of air-conditioning |
| CN108278714B (en) * | 2017-01-04 | 2020-04-07 | 奥克斯空调股份有限公司 | Control method of air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0789754B2 (en) | 1995-09-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |