JPH04268155A - Annual cooling operation control device for air conditioner - Google Patents
Annual cooling operation control device for air conditionerInfo
- Publication number
- JPH04268155A JPH04268155A JP3027131A JP2713191A JPH04268155A JP H04268155 A JPH04268155 A JP H04268155A JP 3027131 A JP3027131 A JP 3027131A JP 2713191 A JP2713191 A JP 2713191A JP H04268155 A JPH04268155 A JP H04268155A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- outdoor
- air conditioner
- fan motor
- fan
- 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
- 238000001816 cooling Methods 0.000 title claims description 7
- 230000001737 promoting effect Effects 0.000 claims abstract description 3
- 230000005855 radiation Effects 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 claims description 5
- 238000007710 freezing Methods 0.000 abstract description 4
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000007664 blowing Methods 0.000 abstract description 3
- 230000004044 response Effects 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 239000003507 refrigerant Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、空気調和機の年間冷房
制御装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an annual cooling control system for an air conditioner.
【０００２】0002
【従来の技術】従来、空気調和機の年間冷房に関しては
、種々提案されている。特に、空気調和機の室外のファ
ンモータの運転率を可変、さらにはＯＮ／ＯＦＦするこ
とにより、熱交換能力を低下させ、高圧側圧力を上昇さ
せることにより、低圧側すなわち室内側の圧力を上昇さ
せ、室内側蒸発器の凍結を防止するものである。また、
室外ファンモータの運転率を可変する制御としては、図
１に示すように、外気温度サーミスタ１ｃで分圧された
電圧をマイクロコンピュータ２に入力し、マイクロコン
ピュータ２の信号によってリレーコイル１０の電流がＯ
Ｎ／ＯＦＦして単にインダクションモータをＯＮ／ＯＦ
Ｆ制御するものや、トランジスタモータにより減速して
いく制御の方法がある。2. Description of the Related Art Conventionally, various proposals have been made regarding annual cooling of air conditioners. In particular, by varying the operating rate of the outdoor fan motor of the air conditioner and even turning it ON/OFF, the heat exchange capacity is reduced and the pressure on the high pressure side is increased, thereby increasing the pressure on the low pressure side, that is, the indoor side. This prevents the indoor evaporator from freezing. Also,
As shown in FIG. 1, the control for varying the operating rate of the outdoor fan motor involves inputting the voltage divided by the outside air temperature thermistor 1c to the microcomputer 2, and controlling the current of the relay coil 10 according to the signal from the microcomputer 2. O
Simply turn the induction motor ON/OFF by turning it N/OFF.
There are methods of F control and methods of deceleration using a transistor motor.
【０００３】さらに、室外負荷の設定と室外負荷の検出
値と室外ファンのＯＮ／ＯＦＦのタイミングの関係は図
３に示すように、ファンのＯＮ／ＯＦＦ点は設定温度に
より一義的に決まる。この時の室外側および室内側の配
管温度は図２（Ａ）に示すようになる。Further, as shown in FIG. 3, the relationship between the outdoor load setting, the detected value of the outdoor load, and the ON/OFF timing of the outdoor fan is that the ON/OFF point of the fan is uniquely determined by the set temperature. At this time, the outdoor and indoor pipe temperatures are as shown in FIG. 2(A).
【０００４】0004
【発明が解決しようとする課題】しかしながらこのよう
な従来の制御では、次に示すような課題を有している。However, such conventional control has the following problems.
【０００５】すなわち、室外側の配管温度が設定温度Ａ
（℃）でＯＦＦ設定温度Ｂ（℃）でＯＦＦという制御で
あれば、前述したように吹出温度は時間と供に図６の従
来例のように変化する。すなわち吹出温度の変動幅が大
きく快適性は悪くなる。[0005] That is, the temperature of the outdoor pipe is equal to the set temperature A.
If the control is OFF at set temperature B (°C), the blowout temperature changes with time as in the conventional example shown in FIG. 6, as described above. In other words, the fluctuation range of the blowing temperature is large, and the comfort deteriorates.
【０００６】本発明は、上記従来の課題に鑑み、室内の
凍結防止を行いながら室内側吹出温度の変動幅を小さく
し、快適性を向上させることを目的としている。SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, it is an object of the present invention to improve comfort by reducing the range of variation in indoor air outlet temperature while preventing indoor freezing.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に本発明は、室外機に放熱を促進するためのファンと、
それを駆動するためのファンモータを搭載した能力可変
型空気調和機に、室外負荷検出を行う室外側配管温度検
出手段と、その検出された配管温度とあらかじめ設定さ
れた温度との高低を比較する温度比較手段と、その比較
手段の高低により室外機のファンモータの回転をある所
定周期のもとにＯＮ／ＯＦＦの断続運転する制御手段を
具備している。[Means for Solving the Problems] In order to solve the above problems, the present invention provides a fan for promoting heat radiation to an outdoor unit,
A variable capacity air conditioner equipped with a fan motor to drive the air conditioner has an outdoor pipe temperature detection means for detecting outdoor load, and the detected pipe temperature is compared with a preset temperature. The apparatus includes a temperature comparison means and a control means for turning ON/OFF the rotation of the fan motor of the outdoor unit intermittently at a certain predetermined period depending on the height of the comparison means.
【０００８】また、本発明は、室外負荷検出として、室
外機の高圧側圧力検出手段を用い、その信号により室外
機ファンモータの回転をある所定周期のもとにＯＮ／Ｏ
ＦＦするものである。Further, the present invention uses a high-pressure side pressure detection means of the outdoor unit to detect the outdoor load, and uses the signal to turn the rotation of the outdoor unit fan motor on and off at a certain predetermined period.
It is to be used as FF.
【０００９】[0009]
【作用】上記手段による作用は、以下のとおりである。[Action] The effect of the above means is as follows.
【００１０】本発明は、室外側負荷を配管温度により検
知し、その検知した温度が設定温度域内で、室外のファ
ンモータが所定周期でＯＮ／ＯＦＦの断続運転を行う状
態を設け、さらに、その設定温度域の下限よりも低温に
なれば、室外のファンモータがＯＦＦする従来の制御方
式を伴うものである。このように、室外ファンモータが
短周期での断続運転を行うことにより、室外側の配管温
度の変動幅を狭め、その結果として室内側配管温度すな
わち吹出温度の変動幅を狭くし、快適性は著しく向上す
る。[0010] The present invention detects the outdoor load based on the piping temperature, and provides a state in which the outdoor fan motor performs intermittent ON/OFF operation at a predetermined cycle when the detected temperature is within a set temperature range. This involves a conventional control method in which the outdoor fan motor is turned off when the temperature drops below the lower limit of the set temperature range. In this way, the outdoor fan motor performs intermittent operation in short cycles, narrowing the fluctuation range of the outdoor piping temperature, and as a result, narrowing the fluctuation range of the indoor piping temperature, that is, the blowout temperature, and improving comfort. Significantly improved.
【００１１】また、本発明は、冷凍サイクルの負荷を冷
媒の圧力スイッチにより検出することにより、負荷変動
に対して、応答性がよく、より適切に高低圧の差を検出
できることになり、年間冷房運転での直接的負荷制御が
出来る。Furthermore, the present invention detects the load of the refrigeration cycle using a refrigerant pressure switch, so that the response to load fluctuations is good and the difference between high and low pressures can be detected more appropriately. Direct load control during operation is possible.
【００１２】0012
【実施例】以下、本発明の一実施例について添付図面に
基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.
【００１３】先ず、図１により本発明の回路について説
明する。同図において、１ａは室外側配管温度サーミス
タであり、温度変化を抵抗Ｒａとの分圧電圧として、マ
イクロコンピュータ２に入力する。配管温度データは比
較装置３により、あらかじめ設定された温度領域のどの
領域かを判別し、これに対応して室外機ファンモータの
回転数を可変する制御ポート（ＳＨ〜ＳＬ）に出力信号
を与える。First, the circuit of the present invention will be explained with reference to FIG. In the figure, reference numeral 1a denotes an outdoor pipe temperature thermistor, which inputs temperature changes to the microcomputer 2 as a divided voltage with respect to a resistor Ra. The comparator 3 uses the comparison device 3 to determine which region of the preset temperature range the piping temperature data is in, and accordingly provides an output signal to the control ports (SH to SL) that vary the rotation speed of the outdoor unit fan motor. .
【００１４】本実施例では図２に示すように外気温が低
下し、配管温度が３０℃を下まわれば、室外機ファンモ
ータを１ランク下の回転数に落とし、配管温度を常に一
定温度以上に保つものである。配管温度は冷媒の凝縮温
度とほぼ等しいものであり、この制御により、室内側蒸
発器温度の低下が防止できることになり、蒸発器の着霜
および、着霜により熱交換量がさらに低下した場合の冷
媒液圧縮による圧縮機の故障を防止できる。In this embodiment, as shown in FIG. 2, when the outside temperature drops and the piping temperature drops below 30°C, the outdoor unit fan motor is lowered to the rotation speed one rank lower, and the piping temperature is always kept above a certain temperature. It is something that should be maintained. The piping temperature is almost equal to the condensation temperature of the refrigerant, and this control can prevent the temperature of the indoor evaporator from decreasing, and prevents frost formation on the evaporator and further decreases in the amount of heat exchange due to frost formation. Compressor failure due to refrigerant liquid compression can be prevented.
【００１５】上記構成において、図４に示すように、室
外気温が２０℃以下になれば、室外のファンモータ６を
下の回転数に落とし配管温度を常に一定温度以上に保つ
ものである。配管温度は冷媒の凝縮温度とほぼ等しいも
のであり、この制御により、室内側蒸発器の温度の低下
が防止できることになる。さらに、室外気温が低下し、
室外側の配管温度が３５℃以下になれば図５に示すよう
に室外ファンモータのＯＮ／ＯＦＦの断続運転域に入る
。この域では室外ファンモータは本実施例としてはＯＮ
時間２秒，ＯＦＦ時間１５秒の周期的な断続運転を行い
、室外さらには室内の配管温度の低下が防止出来る。
この周期でも室外および室内の配管温度が低下して２８
℃以下になった場合、従来どおり室外ファンが完全にＯ
ＦＦする状態となる。そしてこの効果により室外および
室内の配管温度が上昇し、３２℃以上になった場合には
、また断続運転の状態となる。さらに配管温度が上昇し
３８℃になった場合には室外ファンが常時ＯＮしている
通常の冷房状態にもどる。ここで従来のように室外側配
管温度の検知により室外のファンモータの強弱およびＯ
Ｎ／ＯＦＦにより室内の配管温度を制御する場合、配管
温度を検出手段には、多少の応答性があり、室外ファン
のＯＮ／ＯＦＦ時間も幅を持ち、その結果として吹出温
度の変動幅も大きくなる。従って、ある温度領域内では
強制的に或る周期でＯＮ／ＯＦＦを断続運転することに
より、室外側の温度を低下させず、しかもその変動幅を
小さくでき、その結果として凍結防止と同時に吹出温度
の変動幅を小さくすることが可能である。In the above configuration, as shown in FIG. 4, when the outdoor air temperature falls below 20° C., the outdoor fan motor 6 is reduced to a lower rotational speed to maintain the piping temperature always above a certain temperature. The pipe temperature is approximately equal to the condensation temperature of the refrigerant, and this control can prevent the temperature of the indoor evaporator from decreasing. In addition, the outdoor temperature decreases,
When the outdoor pipe temperature becomes 35° C. or lower, the outdoor fan motor enters an intermittent ON/OFF operation range as shown in FIG. In this area, the outdoor fan motor is ON in this embodiment.
By performing periodic intermittent operation with a time of 2 seconds and an OFF time of 15 seconds, it is possible to prevent the outdoor and indoor pipe temperatures from dropping. Even during this period, the outdoor and indoor pipe temperatures decreased to 28
If the temperature drops below ℃, the outdoor fan will turn off completely as before.
The state becomes FF. This effect causes the outdoor and indoor pipe temperatures to rise, and when they reach 32° C. or higher, the system enters intermittent operation again. When the pipe temperature further rises to 38°C, the system returns to the normal cooling state in which the outdoor fan is always on. Here, as in the past, the outdoor fan motor strength and O
When controlling the indoor piping temperature by N/OFF, the means for detecting the piping temperature has some responsiveness, and the ON/OFF time of the outdoor fan also has a range, and as a result, the fluctuation range of the blowing temperature is large. Become. Therefore, by forcibly operating the ON/OFF intermittently at a certain cycle within a certain temperature range, the temperature outside the room does not drop and its fluctuation range can be reduced.As a result, the blowout temperature It is possible to reduce the range of fluctuation.
【００１６】また、冷媒の正常な循環状態かを判断する
手段を室外機高圧側圧力スイッチにより行なうため、冷
媒凝縮温度とほぼ同じ値での応答性の早い細かな制御が
実現できる。Furthermore, since the means for determining whether the refrigerant is in a normal circulating state is performed by the outdoor unit high-pressure side pressure switch, it is possible to realize fast-responsive and detailed control at almost the same value as the refrigerant condensing temperature.
【００１７】[0017]
【発明の効果】以上のように、本発明の制御方式を用い
れば、年間冷房において、室内の熱交換器の凍結を防止
すると同時に、室内側の吹出温度の変動幅を小さくし快
適性を著しく向上させることが出来る。[Effects of the Invention] As described above, if the control method of the present invention is used, it is possible to prevent indoor heat exchangers from freezing during annual cooling, and at the same time, reduce the fluctuation range of indoor air outlet temperature and significantly improve comfort. It can be improved.
【図１】本発明および従来例の回路図[Fig. 1] Circuit diagram of the present invention and conventional example
【図２】（Ａ）は従来例の外気温−配管温度特性図（Ｂ
）は外気温−室外ファン回転数特性図[Figure 2] (A) is an outside air temperature vs. piping temperature characteristic diagram (B) of the conventional example.
) is the outside temperature vs. outdoor fan rotation speed characteristic diagram
【図３】従来例の
室外ファンのＯＮ／ＯＦＦ状態と配管温度の関係を示す
状態図[Figure 3] State diagram showing the relationship between the ON/OFF state of a conventional outdoor fan and the piping temperature
【図４】（Ａ）は本発明の外気温−配管温度特性図（Ｂ
）は外気温−室外ファン回転数特性図[Figure 4] (A) is an outside air temperature-pipe temperature characteristic diagram (B) of the present invention.
) is the outside temperature vs. outdoor fan rotation speed characteristic diagram
【図５】本発明の
室外ファンのＯＮ／ＯＦＦ状態と配管温度の関係を示す
状態図[Fig. 5] A state diagram showing the relationship between the ON/OFF state of the outdoor fan of the present invention and the piping temperature.
【図６】本発明と従来例の効果を示す温度特性図[Fig. 6] Temperature characteristic diagram showing the effects of the present invention and the conventional example
１ａ 配管温度サーミスタ １ｂ 圧力スイッチ １ｃ 外気温度サーミスタ ２ マイクロコンピュータ ６ トランジスタモータ １０ リレーコイル １１ インダクションモータ 1a Piping temperature thermistor 1b Pressure switch 1c Outside air temperature thermistor 2 Microcomputer 6 Transistor motor 10 Relay coil 11 Induction motor
Claims (2)
それを駆動するためのファンモータを搭載した能力可変
型空気調和機に、室外の負荷検出を行なう室外側配管温
度検出手段と、その検出された配管温度とあらかじめ設
定された温度との高低を比較する温度比較手段と、その
比較手段の高低の結果によって室外機のファンモータの
回転を、前記検出手段によって検出された室外の配管温
度が所定の温度領域で所定周期のもとにＯＮ／ＯＦＦの
断続運転を行なう制御手段を具備した空気調和機の年間
冷房制御装置。Claim 1: A fan for promoting heat radiation to an outdoor unit;
A variable capacity air conditioner equipped with a fan motor to drive the air conditioner has an outdoor piping temperature detection means that detects the outdoor load, and compares the detected piping temperature with a preset temperature. and a temperature comparison means for controlling the rotation of the fan motor of the outdoor unit according to the height results of the comparison means, such that the outdoor piping temperature detected by the detection means is turned ON/OFF at a predetermined period in a predetermined temperature range. An annual cooling control device for an air conditioner equipped with a control means for intermittent operation.
力検出手段を用いた請求項１記載の空気調和機の年間冷
房制御装置。2. The annual cooling control system for an air conditioner according to claim 1, wherein high pressure side pressure detection means of the outdoor unit is used to detect the outdoor load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02713191A JP3303303B2 (en) | 1991-02-21 | 1991-02-21 | Annual cooling control device for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02713191A JP3303303B2 (en) | 1991-02-21 | 1991-02-21 | Annual cooling control device for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04268155A true JPH04268155A (en) | 1992-09-24 |
| JP3303303B2 JP3303303B2 (en) | 2002-07-22 |
Family
ID=12212503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02713191A Expired - Fee Related JP3303303B2 (en) | 1991-02-21 | 1991-02-21 | Annual cooling control device for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3303303B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449217C (en) * | 2005-09-02 | 2009-01-07 | 浙江工业大学 | Air conditioner controller with comfortable, energy-saving and healthy functions |
| CN100462637C (en) * | 2005-09-02 | 2009-02-18 | 浙江工业大学 | Energy-saving air conditioner controller capable of smoothing electricity consumption peak |
-
1991
- 1991-02-21 JP JP02713191A patent/JP3303303B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449217C (en) * | 2005-09-02 | 2009-01-07 | 浙江工业大学 | Air conditioner controller with comfortable, energy-saving and healthy functions |
| CN100462637C (en) * | 2005-09-02 | 2009-02-18 | 浙江工业大学 | Energy-saving air conditioner controller capable of smoothing electricity consumption peak |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3303303B2 (en) | 2002-07-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |