JP2720594B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP2720594B2 JP2720594B2 JP2282147A JP28214790A JP2720594B2 JP 2720594 B2 JP2720594 B2 JP 2720594B2 JP 2282147 A JP2282147 A JP 2282147A JP 28214790 A JP28214790 A JP 28214790A JP 2720594 B2 JP2720594 B2 JP 2720594B2
- Authority
- JP
- Japan
- Prior art keywords
- indoor
- pulse
- setting
- relative humidity
- expansion valve
- 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
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、空気調和機の除湿運転時に室内の湿度をコ
ントロールすることにより快適性環境を創造するための
運転制御に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to operation control for creating a comfortable environment by controlling indoor humidity during dehumidifying operation of an air conditioner.
従来の技術 従来の空気調和機は、除湿運転時にコンプレッサーの
運転周波数と室内ファンモーターの回転速度を制御して
いた。また、パルス式膨張弁の絞りはある一定冷媒吐出
温度に到達するまで時間をかけて絞り続け、また相対湿
度制御はコンプレッサーの運転停止を支配するのみであ
った。2. Description of the Related Art A conventional air conditioner controls the operating frequency of a compressor and the rotation speed of an indoor fan motor during a dehumidifying operation. Further, the throttle of the pulse type expansion valve continued to be throttled over time until a certain refrigerant discharge temperature was reached, and the relative humidity control only governed the stop of the operation of the compressor.
発明が解決しようとする課題 従来の制御では、負荷に対応したコンプレッサーの運
転周波数、パルス式膨張弁の絞り開度を設定することは
非常に困難であり、いち早く快適な住環境を創造するこ
とはできない。例えば、室外気温が比較的低い相対湿度
が高い場合、冷凍能力が負荷に比べて大きくなり、コン
プレッサーの運転停止の繰り返しを生じ、室内の湿度を
快適にコントロールすることができなっかた。With the conventional control, it is very difficult to set the operating frequency of the compressor corresponding to the load and the throttle opening of the pulse expansion valve, and it is difficult to create a comfortable living environment as soon as possible. Can not. For example, when the outdoor temperature is relatively low and the relative humidity is high, the refrigerating capacity becomes larger than the load, and the operation of the compressor is repeatedly stopped, so that the indoor humidity cannot be comfortably controlled.
本発明は上記課題を解決するためのもので、コンプレ
ッサーの低運動周波数連続運転（低能力運転）とパルス
式膨張弁の動作を室内気温、相対湿度あるいは室外気温
などの負荷により最適に制御を行なうことを目的とす
る。The present invention has been made to solve the above problems, and optimally controls the low-motion-frequency continuous operation (low-capacity operation) of a compressor and the operation of a pulse-type expansion valve according to loads such as room temperature, relative humidity, and outdoor temperature. The purpose is to:
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、低周波数連続
運転が可能なコンプレッサーと、絞り量可変パルス式膨
張弁と、室内ファンモータを利用し、運転モードが冷房
から除湿運転に切り換った時の外気温度によりパルス式
膨張弁の初期設定値を決定し、絞り開度を自動的に絞る
方向に移行させ、最終的に室内ファンモータの回転速度
を通常冷房運転時に対して変更するものである。Means for Solving the Problems In order to solve the above problems, the present invention uses a compressor capable of low-frequency continuous operation, a throttle variable pulse type expansion valve, and an indoor fan motor, and the operation mode is from cooling to cooling. The initial setting value of the pulse expansion valve is determined based on the outside air temperature when switching to the dehumidifying operation, and the opening degree of the throttle is automatically shifted to the direction in which it is automatically reduced. It changes over time.
作用 本発明は除湿運転時に外気温度に対応したパルス式膨
張弁の絞り開度の初期設定値を持ち、これにより冷房運
転時よりも大幅に絞り量を増すことにより、室内及び室
外の負荷に対して急速にかつ最適な絞り開度の設定を実
現したうえで、室内ファンモータの回転速度を下げるこ
とにより、室内熱交換器の温度を下げ除湿能力を最大に
上昇させ、室内の絶対湿度を下げる。つまり快適住環境
の創造を可能にする。Function The present invention has an initial setting value of the throttle opening of the pulse type expansion valve corresponding to the outside air temperature during the dehumidifying operation, thereby significantly increasing the throttle amount compared with the cooling operation, thereby reducing indoor and outdoor loads. The temperature of the indoor heat exchanger is reduced and the dehumidifying capacity is maximized by lowering the rotation speed of the indoor fan motor after achieving the rapid and optimal setting of the throttle opening. . In other words, a comfortable living environment can be created.
実施例 以下、本発明の一実施例について図面を参考に説明す
る。Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
第１図、第２図により本発明の実施例について説明す
る。An embodiment of the present invention will be described with reference to FIGS.
図に示す様にリモコンまたは強制運転などにより冷房
または除湿運転の指示が出ると、（スッテプ101）空気
調和機の室内ファン、室外ファン、コンプレッサーの運
転が始まる。（スッテプ102） これと同時に室内吸込温度を室内吸込温度検出手段１
によりサンプリングした室内吸込温度Tinと室内吸込温
度設定手段２による規定室内吸込温度Taを比較手段３で
比較することにより（スッテプ103）室内吸込温度の判
定を行い、室内吸込温度Tinが規定室内吸込温度Taを下
回る場合、（Tin＜＝Ta）除湿運転を開始する（スッテ
プ104）。As shown in the figure, when an instruction for cooling or dehumidifying operation is issued by a remote controller or forced operation (Step 101), the operation of the indoor fan, outdoor fan, and compressor of the air conditioner starts. (Step 102) At the same time, the indoor suction temperature is measured by the indoor suction temperature detecting means 1.
The indoor suction temperature Tin sampled by the above is compared with the specified indoor suction temperature Ta by the indoor suction temperature setting means 2 by the comparing means 3 (Step 103), and the indoor suction temperature is determined. The indoor suction temperature Tin is determined to be the specified indoor suction temperature. If it is lower than Ta (Tin <= Ta), the dehumidifying operation is started (step 104).
スッテプ104にて除湿運転を開始すると同時に室内フ
ァンモータ速度切換手段32及び出力手段33により室内フ
ァンモータ速度を冷房運転時よりも減少させる。すなわ
ちこの段階で、室内側の風量を減少させてしまう。（ス
ッテプ105） また、同時にコンプレッサーの運転周波数も低周波数
に変更する。（スッテプ105a） 次に室外温度を室外温度検出手段５によりサンプリン
グした室外温度Toutと室外温度設定手段６による規定室
外温度T1を比較手段７で比較することにより（スッテプ
106）室外温度の判定を行い、室外温度Toutが規定室外
温度T1を上回る場合、パルス式膨張弁絞り開度設定手段
10によりパルス式膨張弁絞り開度の初期設定値P1を設定
し、パルス式膨脹弁絞り開度検出手段９で検出した絞り
開度との比較結果に基ずいて出力手段12より信号を出力
し、パルス出力手段25、移行手段26、出力手段27により
パルス式膨脹弁28の絞り開度を初期設定値に移行するよ
うに絞る。（スッテプ107） また前記スッテプ106にて室外温度Toutが規定室外温
度T1を下回る場合、パルス式膨張弁絞り開度設定手段10
によりパルス式膨張弁絞り開度の初期設定値P2を設定し
（P2はP1に比べ絞り量が大きい）、前記同様出力手段12
より信号を出力し、パルス出力手段25、移行手段26、出
力手段27によりパルス式膨脹弁28の絞り開度を初期設定
値に移行するように絞る。（スッテプ108） 次に再度室内吸込温度を室内吸込温度検出手段１によ
りサンプリングした室内吸込温度Tinと室内吸込温度設
定手段２による規定室内吸込温度Tbを比較手段３で比較
することにより（スッテプ109）室内吸込温度の判定を
行い、室内吸込温度TinがTbを下回る場合室内相対湿度
を室内相対湿度検出手段17によりサンプリングした室内
相対湿度Winと室内相対湿度設定手段18による規定室内
相対湿度Waを比較手段19で比較することにより（スッテ
プ110）室内相対湿度の判定を行い、室内相対湿度Winが
Waを上回る場合、運転周波数設定手段14により運転周波
数Hz1を設定し、運転周波数検出手段13で検出した運転
周波数との比較結果に基ずいて出力手段16より信号を出
力し、周波数切換手段29、出力手段30によりスクロール
コンプレッサーの運転周波数を変更する。（スッテプ11
1） また、前記スッテプ110にて室内相対湿度WinがWaを下
回る場合、再度室内相対湿度設定手段18による規定室内
相対湿度Wbを比較手段19で比較することにより（スッテ
プ112）室内相対湿度の判定を行い、室内相対湿度Winが
Wbを上回る場合、運転周波数設定手段14により運転周波
数Hz2を設定し（Hz1＞Hz2）、前記同様出力手段16より
信号を出力し、周波数切換手段29、出力手段30によりコ
ンプレッサーの運転周波数を変更する。（スッテプ11
3） また前記スッテプ112にて室内相対湿度WinがWbを下回
る場合、コンプレッサーの運転を停止する。（スッテプ
114） 最後、室内吸込温度を室内吸込温度検出手段１により
サンプリングした室内吸込温度Tinと室内吸込温度設定
手段２による規定室内吸込温度Tcを比較手段３で比較す
ることにより（スッテプ115）室内吸込温度の判定を行
ない、、室内吸込温度Tinが規定室内吸込温度Tcを下回
る場合、スッテプ109とスッテプ110の間の位置にもど
る。また室内吸込温度Tinが規定室内吸込温度Tcを上回
る場合、スッテプ102とスッテプ103の間の位置にもど
る。これは各ステップで室内負荷に応じたコンプレッサ
ーの運転周波数設定及びパルス式膨張弁の絞り開度調整
により除湿運転のための最適制御を行なったが、外乱等
により室内または室外の負荷に変化が発生した場合、除
湿運転から通常冷房運転に切換える働きをする。At step 104, the dehumidifying operation is started, and at the same time, the indoor fan motor speed is reduced by the indoor fan motor speed switching means 32 and the output means 33 as compared with the cooling operation. That is, at this stage, the air volume on the indoor side is reduced. (Step 105) At the same time, the operating frequency of the compressor is also changed to a low frequency. (Step 105a) Next, the outdoor temperature Tout sampled by the outdoor temperature detecting means 5 and the specified outdoor temperature T1 by the outdoor temperature setting means 6 are compared by the comparing means 7 (Step 105a).
106) Judgment of the outdoor temperature, and when the outdoor temperature Tout exceeds the specified outdoor temperature T1, the pulse-type expansion valve throttle opening setting means
An initial setting value P1 of the pulse-type expansion valve throttle opening is set by 10 and a signal is output from the output means 12 based on the result of comparison with the throttle opening detected by the pulse-type expansion valve throttle opening detection means 9. Then, the pulse output means 25, the shift means 26, and the output means 27 reduce the throttle opening of the pulse type expansion valve 28 so as to shift to the initial set value. (Step 107) When the outdoor temperature Tout is lower than the specified outdoor temperature T1 in step 106, the pulse-type expansion valve throttle opening setting means 10 is used.
Sets the initial setting value P2 of the pulse type expansion valve throttle opening (P2 has a larger throttle amount than P1).
The pulse output means 25, the transition means 26, and the output means 27 reduce the aperture of the pulse type expansion valve 28 so as to shift to the initial set value. (Step 108) Next, the indoor suction temperature Tin sampled by the indoor suction temperature detecting means 1 and the specified indoor suction temperature Tb by the indoor suction temperature setting means 2 are compared again by the comparing means 3 (Step 109). The indoor suction temperature is determined, and when the indoor suction temperature Tin is lower than Tb, the indoor relative humidity Win sampled by the indoor relative humidity detecting means 17 and the prescribed indoor relative humidity Wa by the indoor relative humidity setting means 18 are compared. By comparing in step 19 (Step 110), the indoor relative humidity is determined, and the indoor relative humidity Win is determined.
If it exceeds Wa, the operating frequency setting unit 14 sets the operating frequency Hz1, and outputs a signal from the output unit 16 based on the comparison result with the operating frequency detected by the operating frequency detecting unit 13, and the frequency switching unit 29, The output means 30 changes the operating frequency of the scroll compressor. (Step 11
1) When the indoor relative humidity Win is lower than Wa at the step 110, the specified indoor relative humidity Wb by the indoor relative humidity setting means 18 is compared again by the comparing means 19 (step 112) and the indoor relative humidity is determined. The indoor relative humidity Win
If it exceeds Wb, the operating frequency Hz2 is set by the operating frequency setting means 14 (Hz1> Hz2), a signal is output from the output means 16 as described above, and the operating frequency of the compressor is changed by the frequency switching means 29 and the output means 30. . (Step 11
3) If the indoor relative humidity Win is lower than Wb in step 112, the operation of the compressor is stopped. (Step
114) Finally, the indoor suction temperature Tin sampled by the indoor suction temperature detecting means 1 and the specified indoor suction temperature Tc by the indoor suction temperature setting means 2 are compared by the comparing means 3 (Step 115). Is determined, and when the indoor suction temperature Tin is lower than the specified indoor suction temperature Tc, the position returns to the position between step 109 and step 110. When the indoor suction temperature Tin exceeds the specified indoor suction temperature Tc, the position returns to the position between step 102 and step 103. In each step, the optimal control for dehumidifying operation was performed by setting the operating frequency of the compressor according to the indoor load and adjusting the throttle opening of the pulse expansion valve. In this case, the operation of switching from the dehumidifying operation to the normal cooling operation is performed.
発明の効果 以上に示した内容により本発明は、室内吸込温度、外
気温度、室内相対湿度、コンプレッサーの運転周波数、
室内ファンモータ回転速度、パルス式膨張弁の絞り開度
を最適に制御することにより、除湿運転時に室内気温の
降下を抑えつつ除湿能力を最大に増加させ、快適な住環
境を創造するものである。Effects of the Invention According to the contents described above, the present invention provides indoor suction temperature, outdoor air temperature, indoor relative humidity, operating frequency of the compressor,
By optimally controlling the rotation speed of the indoor fan motor and the throttle opening of the pulse expansion valve, the dehumidification capacity is maximized while suppressing the decrease in indoor temperature during dehumidification operation, creating a comfortable living environment. .
第１図（ａ）、（ｂ）は本発明の一実施例における空気
調和機の制御を示すフローチャート、第２図は同制御ブ
ロック図である。 １……室内吸込温度検出手段、５……室外温度（外気温
度）検出手段、９……パルス式膨張弁絞り開度検出手
段、13……運転周波数検出手段、17……室内相対湿度検
出手段、３、７、11、15、19、出力手段、25……パルス
出力手段、26……移行手段、29……運転周波数切換手
段、32……室内ファンモータ回転速度切換手段。1 (a) and 1 (b) are flowcharts showing control of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a control block diagram thereof. 1 ... indoor suction temperature detecting means, 5 ... outdoor temperature (outside air temperature) detecting means, 9 ... pulse type expansion valve throttle opening detecting means, 13 ... operating frequency detecting means, 17 ... indoor relative humidity detecting means. , 3, 7, 11, 15, 19, output means, 25 ... pulse output means, 26 ... transition means, 29 ... operating frequency switching means, 32 ... indoor fan motor rotation speed switching means.
Claims (1)
温度検出手段と、室内の吸込温度を設定する室内吸込温
度設定手段と、前記室内吸込温度検出手段で検出した室
内吸込温度と前記室内吸込温度設定手段によって予め設
定した室内温度の設定値とを比較しその比較結果の差異
に基ずいて制御信号を出力する第１の比較手段と、外気
の温度を検知し出力する外気温度検出手段と、外気温度
を設定する外気温度設定手段と、前記外気温度検出手段
で検出した外気温度と前記外気温度設定手段によって予
め設定した外気温の設定値とを比較しその比較結果の差
異に基ずいて制御信号を出力する第２の比較手段と、室
内の相対湿度を検知し出力する室内相対湿度検出手段
と、人間にとって快適とされる相対湿度を設定する室内
相対湿度設定手段と、前記室内相対湿度検出手段で検出
した室内相対湿度と前記室内相対湿度設定手段によって
予め設定した室内相対湿度の設定値とを比較しその比較
結果の差異に基ずいて制御信号を出力する第３の比較手
段と、絞り量可変型パルス式膨脹弁の開度を検知し出力
するパルス式膨脹弁絞り開度検出手段と、前記第２の比
較手段からの制御信号によって前記パルス式膨脹弁の絞
り開度の初期値を設定するパルス式膨脹弁絞り開度設定
手段と、コンプレッサーの運転周波数を検知し出力する
運転周波数検出手段と、前記第１、第３の比較手段から
の制御信号によって前記コンプレッサーの運転周波数を
所定値に設定する運転周波数設定手段と、前記パルス式
膨脹弁絞り開度検出手段で検出した絞り開度と前記パル
ス式膨脹弁絞り開度設定手段による絞り開度の初期値と
を比較しその比較結果の出力に基ずいて前記パルス式膨
脹弁の絞り開度を前記初期値に移行させるためのパルス
信号を出力するパルス出力手段と、前記運転周波数検出
手段で検出した運転周波数と前記運転周波数設定手段に
よる前記所定値とを比較しその比較結果の出力に基ずい
て前記コンプレッサーの運転周波数を変更する周波数切
換手段とを設け、前記第１、第２、第３の比較手段から
の出力信号、前記パルス出力手段及び前記周波数切換手
段からの出力信号によって除湿運転時における前記パル
ス式膨脹弁の絞り開度、前記コンプレッサーの運転周波
数及び室内ファンモータの回転速度を制御するようにし
た空気調和機。An indoor suction temperature detecting means for detecting and outputting an indoor suction temperature, an indoor suction temperature setting means for setting an indoor suction temperature, an indoor suction temperature detected by the indoor suction temperature detecting means, and the indoor suction temperature. First comparing means for comparing a set value of the indoor temperature preset by the suction temperature setting means and outputting a control signal based on a difference between the comparison results, and outside air temperature detecting means for detecting and outputting the temperature of the outside air And an outside air temperature setting means for setting the outside air temperature, and comparing the outside air temperature detected by the outside air temperature detection means with a set value of the outside air temperature preset by the outside air temperature setting means, based on a difference between the comparison results. Second comparing means for outputting a control signal, and indoor relative humidity detecting means for detecting and outputting relative humidity in the room; and indoor relative humidity setting means for setting a relative humidity that is comfortable for humans. Comparing a room relative humidity detected by the room relative humidity detection unit with a set value of the room relative humidity set in advance by the room relative humidity setting unit, and outputting a control signal based on a difference between the comparison results; Comparison means, pulse-type expansion valve throttle opening detection means for detecting and outputting the opening degree of the variable-aperture variable-type pulse expansion valve, and throttle opening of the pulse-type expansion valve according to a control signal from the second comparison means. Pulse type expansion valve throttle opening degree setting means for setting an initial value of the degree, operating frequency detecting means for detecting and outputting the operating frequency of the compressor, and control of the compressor by a control signal from the first and third comparing means. Operating frequency setting means for setting an operating frequency to a predetermined value; throttle opening detected by the pulse type expansion valve throttle opening detecting means; and throttle by the pulse type expansion valve throttle opening setting means. A pulse output means for comparing the initial value of the opening with a pulse output means for outputting a pulse signal for shifting the throttle opening of the pulse type expansion valve to the initial value based on the output of the comparison result; Frequency switching means for comparing the operating frequency detected by the means with the predetermined value by the operating frequency setting means and changing the operating frequency of the compressor based on the output of the comparison result; , An output signal from the third comparing means, an output signal from the pulse output means and an output signal from the frequency switching means, a throttle opening degree of the pulse type expansion valve during a dehumidifying operation, an operating frequency of the compressor, and rotation of an indoor fan motor. An air conditioner that controls the speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2282147A JP2720594B2 (en) | 1990-10-19 | 1990-10-19 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2282147A JP2720594B2 (en) | 1990-10-19 | 1990-10-19 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04158144A JPH04158144A (en) | 1992-06-01 |
| JP2720594B2 true JP2720594B2 (en) | 1998-03-04 |
Family
ID=17648717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2282147A Expired - Fee Related JP2720594B2 (en) | 1990-10-19 | 1990-10-19 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2720594B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339653C (en) * | 2001-12-17 | 2007-09-26 | 乐金电子(天津)电器有限公司 | Control method of dehumidification operating mode of domestic variable frequency cold and worm air conditioner |
| CN102927666B (en) * | 2012-11-30 | 2015-02-25 | 天津市金硕科技投资集团有限公司 | Intelligent control system and method of central air-conditioner |
| CN105546742B (en) * | 2015-12-25 | 2018-10-26 | 美的集团武汉制冷设备有限公司 | The control method and device of air conditioner and air conditioner |
| CN109556248B (en) * | 2018-11-06 | 2021-04-20 | 青岛海尔空调电子有限公司 | Operation mode control method for air conditioning system |
-
1990
- 1990-10-19 JP JP2282147A patent/JP2720594B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04158144A (en) | 1992-06-01 |
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