JPH0351654A - Controlling method of air conditioner - Google Patents
Controlling method of air conditionerInfo
- Publication number
- JPH0351654A JPH0351654A JP1184608A JP18460889A JPH0351654A JP H0351654 A JPH0351654 A JP H0351654A JP 1184608 A JP1184608 A JP 1184608A JP 18460889 A JP18460889 A JP 18460889A JP H0351654 A JPH0351654 A JP H0351654A
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- air
- temperature
- discharge pressure
- air conditioner
- 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 abstract description 8
- 238000005057 refrigeration Methods 0.000 claims description 9
- 238000007664 blowing Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract 4
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は空気調和機の制御方法に係シ、％に回転数制御
圧縮機を用いた冷凍サイクルにおいて、高温風を早期に
吹出させる制御方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a control method for an air conditioner, and is a control method for blowing out high-temperature air early in a refrigeration cycle using a rotation speed controlled compressor. Regarding.
従来の高温風吹出しの制御法として、時開１１８６０−
２５５７５４号のように１室内側送風機の回転数と圧縮
機の回転数を変互にそれぞれ、増大、減少させて吹出空
気温度が基準温度になるように制御するとの記載がある
。As a conventional control method for high-temperature air blowing,
No. 255754 describes that the number of rotations of an indoor blower and the number of rotations of a compressor are alternately increased and decreased to control the temperature of the blown air to a reference temperature.
上記従来技術は、高温風を得るために吐出圧力を含めた
制御に触れていない。即ち、吹出空気温度を最大限上昇
させるには、少なくとも吐出圧力を圧縮機許容値で運転
する必要があり、この点が考慮されていない。The above-mentioned prior art does not mention control including discharge pressure in order to obtain high-temperature air. That is, in order to increase the temperature of the blown air to the maximum extent, it is necessary to operate the compressor at least with the discharge pressure at an allowable value, and this point is not taken into account.
本発明の目的は、高温風吹出運転において、運転開始時
は、室内送風機を低風量、圧縮機回転数を高速で運転し
て圧縮機の吐出圧力を短時間に上昇させ、該圧力が許容
限界値に違した後は送風機風量、圧縮機回転数を調節し
て吐出圧力を限界値一定に制御し、空気調和機が発輝で
きる最大限の高温風を短時間に吹出させ、且つ持続させ
るととくある。また、本発明の他の目的は、圧力センサ
、熱交換器温度検知サーミスタ、あるいは外気温度と室
内温度を用いて室内風量、圧縮機回転数を調節して吐出
圧力を一定に保つ制御方法を提供することＫある。An object of the present invention is to increase the discharge pressure of the compressor in a short period of time by operating an indoor blower at a low air volume and a high compressor rotational speed at the start of operation in high-temperature air blowing operation, so that the pressure reaches the allowable limit. After the value is exceeded, the blower air volume and compressor rotation speed are adjusted to control the discharge pressure to a constant limit value, and the air conditioner blows out the highest temperature air that can shine in a short time and sustains it. There is a particular one. Another object of the present invention is to provide a control method that uses a pressure sensor, a heat exchanger temperature detection thermistor, or outside air temperature and indoor temperature to adjust indoor air volume and compressor rotation speed to maintain a constant discharge pressure. There's K things to do.
上記目的は、空気調和機の起動時、室内送風機を低速で
運転し、圧縮機を高速で運転して圧縮機の吐出圧力を急
速に上昇させ、同時に吐出圧力の変化を圧力センサー
室内熱交換器温度感知サーミスタ等によシ測定し、吐出
圧力が目標値到達後は、目標値と実際の吐出圧力の差を
監視しながら、室内送風機の速度上昇、圧縮機回転数の
減速を行って吐出圧力を一定に保つととによシ達成でき
る。The above purpose is to operate the indoor blower at low speed and operate the compressor at high speed to rapidly increase the discharge pressure of the compressor when starting the air conditioner, and at the same time detect changes in discharge pressure using a pressure sensor.
After the discharge pressure reaches the target value, measured using an indoor heat exchanger temperature sensing thermistor, etc., increase the speed of the indoor blower and reduce the speed of the compressor while monitoring the difference between the target value and the actual discharge pressure. Much better results can be achieved by keeping the discharge pressure constant.
また、熱交換器温度サーミスタを使用する場合は、空調
機起動時に、熱交換器温度が吐出圧力に対して遅れがあ
るため、運転時間に対して温度補正を行い、吐出圧力の
飽和温度を精度良く推定することにより、吐出圧力を一
定に制御するこができる＠
〔作用〕
圧縮機の吐出圧力は、外気温度が一定の時、室内温度が
高くて室内送風量が少なく、圧縮機回転数が高い時ＩＩ
ｃ高圧となる０即ち、圧Ｍ根回転数が高いため、冷凍サ
イクル内の冷謀循環量が大きくなるが、室内風量が少な
いため室内空気温度との温度差を大きくして放熱すべく
、吐出圧力は上昇する◎しかも室内温度が高い時は更に
吐出圧力が上昇する。逆に、室内送風量を増して圧縮機
回転数を低速にすれば、吐出圧力は下降する。In addition, when using a heat exchanger temperature thermistor, since the heat exchanger temperature lags behind the discharge pressure when the air conditioner is started, temperature correction is performed for the operating time to accurately determine the saturation temperature of the discharge pressure. By making a good estimate, it is possible to control the discharge pressure to a constant value.@ [Operation] The discharge pressure of the compressor is determined by the following: when the outside temperature is constant, the indoor temperature is high, the indoor air flow is small, and the compressor rotation speed is low. High time II
c High pressure 0, that is, pressure M root rotational speed is high, so the amount of cooling circulation in the refrigeration cycle is large, but since the indoor air volume is small, the temperature difference with the indoor air temperature is increased and the heat is radiated Pressure increases◎Moreover, when the indoor temperature is high, the discharge pressure increases even more. Conversely, if the amount of indoor air blown is increased and the compressor rotational speed is lowered, the discharge pressure will decrease.
従って、吐出圧力を一定とするには、室内送風量及び圧
縮機回転数を調節することによシ制御可能となる。Therefore, the discharge pressure can be controlled to be constant by adjusting the amount of air blown into the room and the rotation speed of the compressor.
以下、本発明の一実施例を第１図から第５図によシ説明
する。第１図は冷凍サイクル構成図であり、１は回転数
制御圧縮機、２は冷房、＠房の冷媒流路を切換える四方
弁、５は室内、４は室外側の熱交換器、５は減圧装置、
６は圧縮機の回転数を制御するインバータ、７は圧縮機
の吐出圧力を感知する圧力センサ、８は室内、９は室外
側の送風機である。１０は制御回路であシ、圧力センサ
ーの信号を受けて、圧縮機回転数、室内送風量を調節す
る。An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. Figure 1 is a refrigeration cycle configuration diagram, where 1 is a rotation speed control compressor, 2 is an air conditioner, a four-way valve that switches the refrigerant flow path in the room, 5 is an indoor heat exchanger, 4 is an outdoor heat exchanger, and 5 is a depressurizer. Device,
6 is an inverter that controls the rotation speed of the compressor, 7 is a pressure sensor that senses the discharge pressure of the compressor, 8 is an indoor blower, and 9 is an outdoor blower. Reference numeral 10 denotes a control circuit which receives signals from the pressure sensor and adjusts the rotation speed of the compressor and the amount of air blown into the room.
このよう忙構成された冷凍サイクルにおいて、圧縮機の
吐出圧力を一定に制御するためのブロック図を第２図、
フロー図を第３図に示す。Figure 2 shows a block diagram for controlling the discharge pressure of the compressor at a constant level in a refrigeration cycle with such a busy configuration.
A flow diagram is shown in FIG.
空気調和機は室内送風機を低速に、圧縮機を高速にして
運転を開始する。同時に圧力センナは圧縮機の吐出圧力
を感知し、圧力が目標値に近づくと、制御回路により、
必要室内風量、及び圧縮機回転数を決定し、決定量に制
御する。更に、冷凍サイクルの適正化遅れ、室温上昇を
考慮し、経過時間に対して連続的あるいは、間隔的に圧
力測定。The air conditioner starts operating with the indoor blower set to low speed and the compressor set to high speed. At the same time, the pressure sensor senses the discharge pressure of the compressor, and when the pressure approaches the target value, the control circuit
Determine the required indoor air volume and compressor rotation speed, and control to the determined amount. Furthermore, taking into account delays in optimization of the refrigeration cycle and rise in room temperature, pressure is measured continuously or at intervals over the elapsed time.
室内風量及び圧縮機回転数を制御し吐出圧力を一定に保
つ。Controls indoor air volume and compressor rotation speed to keep discharge pressure constant.
第４図、第５図は他の実施例であり、圧力センサーに変
えて、室内側熱交換器温度感知サーミスタを取付け、熱
交換器温度から吐出圧力を逆算する方法である。また、
空気調和機の起動時は熱交換器温度が吐出圧力の上昇に
対して遅れがあるため、圧縮機温度、外気温度を感知す
るサーミスタを取付け、運転時間に対して熱交換器温度
を補正する＠実際に運転した時の飽和温度に対する熱変
換器温度の時間変化を第５図に示す。圧縮機温度と外気
温度の差をパラメータとすると、差が大きい程、空調機
起動直後の熱交換器温度が飽和温度よシ低くなる。即ち
、圧縮機温度が高い程、冷凍サイクルが短時間に適正と
なるため、吐出圧力の上昇が早く、飽和温度と熱交換器
温度の差が大きくなる。そこで、（１）式に示すように
、熱交換器温度から飽和温度を運転時間、圧縮機温度、
外気温度によシ補正することにより、運転尚初から吐出
圧力を精度良〈推定できる。FIGS. 4 and 5 show another embodiment, in which a thermistor for sensing the temperature of the indoor heat exchanger is attached instead of the pressure sensor, and the discharge pressure is calculated backward from the heat exchanger temperature. Also,
When an air conditioner is started, the heat exchanger temperature lags behind the rise in discharge pressure, so a thermistor is installed to detect the compressor temperature and outside air temperature, and the heat exchanger temperature is corrected for the operating time. Figure 5 shows the change in heat converter temperature over time with respect to the saturation temperature during actual operation. If the difference between the compressor temperature and the outside air temperature is used as a parameter, the larger the difference, the lower the heat exchanger temperature immediately after starting the air conditioner will be than the saturation temperature. That is, the higher the compressor temperature, the more appropriate the refrigeration cycle becomes in a short time, the faster the discharge pressure rises, and the larger the difference between the saturation temperature and the heat exchanger temperature. Therefore, as shown in equation (1), the saturation temperature is calculated from the heat exchanger temperature by the operating time, compressor temperature,
By correcting for the outside air temperature, the discharge pressure can be estimated with high accuracy from the beginning of operation.
第６図も他の実施例であり、圧縮機回転数、室内風量、
室内温度、外気温度を変えた時の吐出圧力を予め求め、
（２）弐に示すような目標吐出圧力を得る時の室内ｊｌ
Ｌｆ、圧縮機回転数を、空調機起動時から室内温度、外
気温度を感知しながら経過時間と共Ｅｌ１次設定し、吐
出圧力を一定に制御するものである。Figure 6 also shows another example, showing the compressor rotation speed, indoor air volume,
Determine the discharge pressure in advance when changing the indoor temperature and outdoor temperature,
(2) Indoor room when obtaining the target discharge pressure as shown in 2
Lf and the compressor rotational speed are set together with the elapsed time while sensing the indoor temperature and outside temperature from the time the air conditioner is started, and the discharge pressure is controlled to be constant.
以上のような制御構成により、空気調和機起動時は低風
量で圧縮機を高速で運転することにより、吐出圧力を短
時間に上昇させ、吐出圧力が目標値到達後は吐出圧力を
一定に保つことによプ、冷凍サイクルを最も高温風状態
にすることができる。With the control configuration described above, when the air conditioner is started, the compressor is operated at high speed with a low air volume to increase the discharge pressure in a short time, and after the discharge pressure reaches the target value, the discharge pressure is kept constant. In particular, the refrigeration cycle can be brought to its hottest state.
従って、測温風を短時間に吹出させるとともに、吹出温
度を最も高温とすることができる。Therefore, the temperature-measured air can be blown out in a short time and the blown-out temperature can be set to the highest temperature.
本発明によれば、圧縮機の吐出圧力を一定に制御するこ
とにより、空気調和機の実現できる最も高温風を得られ
る他、少風量、圧縮機高速運転から起動するため、高温
風となる時間も早い。According to the present invention, by controlling the discharge pressure of the compressor to a constant value, it is possible to obtain the highest temperature air that can be achieved by an air conditioner.In addition, since the air conditioner starts with a small air volume and high speed operation of the compressor, the time required for the high temperature air to reach It's early too.
また、吐出圧力を感知する方法として、サーミスタを使
用すれば、安価に吐出圧力を制御できる空気調和機が得
られる。Further, if a thermistor is used as a method for sensing the discharge pressure, an air conditioner that can control the discharge pressure at low cost can be obtained.
第１図は本発明の一実施例の冷凍サイクル構成図、第２
図は吐出圧力を一定に制御するためのブロック図、第３
図は実施例のフロー図、第４図。
第５図、第６図は他の実施例の説明図である。
１・・・回転数制御圧縮機、５．４・・・熱交換器、６
・・・インバータ、７・・・圧力センサ、８・・・室内
送風機、１０・・・制御回路、１１，１２．１５・・・
温度検知す第ろの
第
Ｌ２１
２Ｌ２］
５Ｌ￥１
８苛 間
（て）
６Ｌ￥１
圧縮携国軒数（Ｎ）
兵陥颯回転ａ、（Ｎ）Fig. 1 is a refrigeration cycle configuration diagram according to an embodiment of the present invention;
The figure is a block diagram for controlling the discharge pressure at a constant level.
The figure is a flow diagram of the embodiment, FIG. FIG. 5 and FIG. 6 are explanatory diagrams of other embodiments. 1... Rotation speed control compressor, 5.4... Heat exchanger, 6
... Inverter, 7... Pressure sensor, 8... Indoor blower, 10... Control circuit, 11, 12.15...
Temperature detection L21 2L2] 5L ￥1 8 hours between 6L ￥1 Number of compressed country houses (N) Hydraulic rotation a, (N)
Claims (1)
送風機等から冷凍サイクルを構成する空気調和機におい
て、圧縮機の吐出圧力を圧縮機回転数、及び室内送風量
の調節により、一定に制御することを特徴とする空気調
和機の制御方法。1. Speed control compressor, four-way valve, heat exchanger, pressure reducing device,
A method for controlling an air conditioner, which comprises controlling a compressor discharge pressure to a constant level by adjusting the compressor rotation speed and the amount of air blown into the room, in an air conditioner that constitutes a refrigeration cycle from a blower or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1184608A JPH0351654A (en) | 1989-07-19 | 1989-07-19 | Controlling method of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1184608A JPH0351654A (en) | 1989-07-19 | 1989-07-19 | Controlling method of air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0351654A true JPH0351654A (en) | 1991-03-06 |
Family
ID=16156199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1184608A Pending JPH0351654A (en) | 1989-07-19 | 1989-07-19 | Controlling method of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0351654A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009097755A (en) * | 2007-10-15 | 2009-05-07 | Mitsubishi Electric Corp | Air conditioner |
-
1989
- 1989-07-19 JP JP1184608A patent/JPH0351654A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009097755A (en) * | 2007-10-15 | 2009-05-07 | Mitsubishi Electric Corp | Air conditioner |
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