JP2697282B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP2697282B2 JP2697282B2 JP2282128A JP28212890A JP2697282B2 JP 2697282 B2 JP2697282 B2 JP 2697282B2 JP 2282128 A JP2282128 A JP 2282128A JP 28212890 A JP28212890 A JP 28212890A JP 2697282 B2 JP2697282 B2 JP 2697282B2
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- Japan
- Prior art keywords
- comparing
- indoor
- temperature
- pulse
- refrigerant discharge
- 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.)
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- Air Conditioning Control Device (AREA)
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住環境を創造するために
運転制御に関するものである。Description: TECHNICAL FIELD The present invention relates to operation control for creating a comfortable living environment by controlling indoor humidity during a 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 an operating frequency of a compressor and a 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、パルス式膨張弁の縛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く相対湿度
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かった。Problems to be Solved by the Invention With conventional control, it is very difficult to set the operating frequency of the compressor corresponding to the load and the opening degree 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
ッサーの低運転周波数連続運転（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 low-frequency continuous operation of a compressor (low-capacity operation) and operation of a pulse-type expansion valve according to loads such as indoor 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、低運転周波数
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対応した
吐出温度設定値を決定しその設定値に基づいてパルス式
膨張弁の絞り開度を制御し、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 utilizes a compressor capable of continuous operation at a low operation frequency, a variable throttle type pulse expansion valve, and an indoor fan motor, and operates in a cooling mode. The discharge temperature setting corresponding to the outside air temperature at the time of switching to the dehumidifying operation from is determined, the throttle opening of the pulse expansion valve is controlled based on the set value, and finally the rotation speed of the indoor fan motor is adjusted. This is changed for the normal cooling operation.
作用 本発明は除湿運転時に、外気温度に応じた冷媒吐出温
度を設定することにより、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 sets the refrigerant discharge temperature according to the outside air temperature during the dehumidifying operation, thereby rapidly and optimally setting the throttle opening with respect to indoor and outdoor loads, and further improves the indoor fan motor. By lowering the rotation speed, the temperature of the indoor heat exchanger is reduced, the dehumidifying capacity is maximized, and the indoor absolute humidity is reduced. 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（ステップ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（ステップ102）。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).
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（ステップ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以下
の場合、（Tin＜＝Ta）除湿運転を開始する（ステップ1
04）。At the same time, the indoor suction temperature is detected 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 less than Ta (Tin <= Ta), start the dehumidifying operation (Step 1)
04).
ステップ104にて除湿運転を開始すると同時に室内フ
ァン速度切換手段32及び出力手段33により室内ファン速
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（ステップ10
5）。At the same time as starting the dehumidifying operation in step 104, the indoor fan speed is reduced by the indoor fan 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 10).
Five).
また、上記ステップ105と同時にコンプレッサーの運
転周波数を低周波数に変更する（ステップ130）。At the same time as step 105, the operating frequency of the compressor is changed to a low frequency (step 130).
続いて、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（ステップ106）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９により運転周波数Hz1を設定し、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（ステップ10
7）。Subsequently, the indoor relative humidity Win sampled by the indoor relative humidity detecting means 17 and the specified indoor relative humidity Wa by the indoor relative humidity setting means 18 are compared by the comparing means 19 (step 106). When the determination is made and the indoor relative humidity Win exceeds Wa, the operating frequency Hz1 is set by the operating frequency setting means 9 and the output means 16 is set.
And the operating frequency of the compressor is changed by the frequency switching means 29 and the output means 30 (step 10).
7).
また、前記ステップ106にて室内相対湿度WinがWa以下
の場合、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（ステップ
108）室内相対湿度の判定を行い、室内相対湿度WinがWb
以上となる場合、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。但し、Wa＞Wbと仮定した場
合。）、出力手段16より信号を出力し、周波数変更手段
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（ステップ109）。If the room relative humidity Win is equal to or less than Wa in step 106, the specified room relative humidity Wb by the room relative humidity setting means 18 is compared again by the comparison means 19 (step 106).
108) The indoor relative humidity is determined, and the indoor relative humidity Win is Wb.
In the case described above, the operating frequency Hz2 is set by the operating frequency setting means 14 (Hz1> Hz2, where Wa> Wb is assumed), a signal is output from the output means 16, and the frequency changing means is output.
29. The operating frequency of the compressor is changed by the output means 30 (step 109).
また前記ステップ108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（ステップ11
0）。If the indoor relative humidity Win is lower than Wb in step 108, the operation of the compressor is stopped (step 11).
0).
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T2を比較手段７で比較することにより（ステップ
111）室外温度の判定を行い、室外温度Toutが規定室外
温度T2以上となる場合、冷媒吐出設定手段22により、規
定冷媒吐出温度設定値Td2を設定し（ステップ112）、さ
れに冷媒吐出温度を冷媒吐出温度検出手段21によりサン
プリングした冷媒吐出温度Tdと前記ステップ112で設定
した規定冷媒吐出温度設定値Td2とを比較手段24で比較
することにより（ステップ113）冷媒吐出温度の判定を
行い、冷媒吐出温度Tdが規定冷媒吐出温度設定値Td2と
等しければ、つぎのステップに進む。もし等しくない場
合、再度冷媒吐出温度Tdと規定冷媒吐出温度設定値Td2
を比較手段24で比較することにより（ステップ114）、
冷媒吐出温度の判定を行い、TdがTd2よりも温度的に低
ければパルス出力手段25、移行手段26、出力手段27によ
りパルス式膨張弁を規定最小量のみ絞る。（ステップ11
5）また前記ステップ114にて冷媒吐出温度の判定を行
い、Tdが温度的にTd2以上であればパルス出力手段25、
移行手段26、出力手段27によりパルス式膨張弁を規定最
小量のみ開く。（ステップ116）その後再度ステップ113
にて冷媒吐出温度Tdと規定冷媒吐出温度設定値Td2の比
較を行い冷媒吐出温度Tdが規定冷媒吐出温度設定値Td2
と等しくなるまで、ステップ114から116の動作を繰り返
す。Next, the outdoor temperature Tout sampled by the outdoor temperature detecting means 5 and the specified outdoor temperature T2 by the outdoor temperature setting means 6 are compared by the comparing means 7 (step S1).
111) The outdoor temperature is determined, and when the outdoor temperature Tout is equal to or higher than the specified outdoor temperature T2, the specified refrigerant discharge temperature set value Td2 is set by the refrigerant discharge setting means 22 (step 112), and the refrigerant discharge temperature is set. The refrigerant discharge temperature Td sampled by the refrigerant discharge temperature detection means 21 is compared with the specified refrigerant discharge temperature set value Td2 set in the step 112 by the comparison means 24 (step 113) to determine the refrigerant discharge temperature. If the discharge temperature Td is equal to the specified refrigerant discharge temperature set value Td2, the process proceeds to the next step. If not equal, again the refrigerant discharge temperature Td and the specified refrigerant discharge temperature set value Td2
By the comparison means 24 (step 114),
The refrigerant discharge temperature is determined, and if Td is lower than Td2 in temperature, the pulse output means 25, the transition means 26, and the output means 27 narrow the pulse expansion valve by a specified minimum amount. (Step 11
5) Further, the refrigerant discharge temperature is determined in step 114, and if Td is equal to or higher than Td2 in terms of temperature, the pulse output means 25
The shift means 26 and the output means 27 open the pulse type expansion valve only by a specified minimum amount. (Step 116) Then Step 113 again
The refrigerant discharge temperature Td is compared with the specified refrigerant discharge temperature set value Td2, and the refrigerant discharge temperature Td is set to the specified refrigerant discharge temperature set value Td2.
The operations of Steps 114 to 116 are repeated until becomes equal to.
次に前記ステップ111の段階で室外温度の判定を行
い、室外温度Toutが規定室外温度T2を下回る場合、冷媒
吐出設定手段22により、規定冷媒吐出温度設定値Td1
（但しTd1＜Td2）を設定し（ステップ124）さらに冷媒
吐出温度を冷媒吐出温度検出手段21によりサンプリング
した冷媒吐出温度Tdと前記ステップ117で設定した規定
冷媒温度設定値Td1を比較手段24で比較することにより
（ステップ118）冷媒吐出温度の判定を行い、冷媒吐出
温度Tdが規定冷媒吐出温度設定値Td1と等しければ、次
のステップに進む。もし等しくない場合、再度冷媒吐出
温度Tdと規定冷媒吐出温度設定値Td1を比較手段24で比
較することにより（ステップ119）冷媒吐出温度の判定
を行い、TdがTd1よりも温度的に低ければパルス出力手
段25、移動手段26、出力手段27によりパルス式膨張弁を
規定最小量のみ絞る（ステップ120）。また前記ステッ
プ119にて冷媒吐出温度の判定を行い、Tdが温度的にTd1
以上であればパルス出力手段25、移行手段26、出力手段
27によりパルス式膨張弁を規定最小量のみ開く（ステッ
プ121）。その後再度ステップ118にて冷媒吐出温度Tdと
規定冷媒吐出温度設定値Td1の比較を行い冷媒吐出温度T
dが規定冷媒吐出温度設定値Td1と等しくなるまで、ステ
ップ119からステップ121の動作を繰り返す。Next, the outdoor temperature is determined at the step 111, and when the outdoor temperature Tout is lower than the specified outdoor temperature T2, the specified refrigerant discharge temperature set value Td1 is set by the refrigerant discharge setting means 22.
(However, Td1 <Td2) is set (Step 124). Further, the refrigerant discharge temperature Td sampled by the refrigerant discharge temperature detecting means 21 is compared with the specified refrigerant temperature set value Td1 set in Step 117 by the comparing means 24. (Step 118), the refrigerant discharge temperature is determined. If the refrigerant discharge temperature Td is equal to the specified refrigerant discharge temperature set value Td1, the process proceeds to the next step. If not equal, the refrigerant discharge temperature Td is again compared with the specified refrigerant discharge temperature set value Td1 by the comparing means 24 (step 119) to determine the refrigerant discharge temperature. If Td is lower in temperature than Td1, a pulse is issued. The pulse-type expansion valve is reduced by the specified minimum amount by the output means 25, the moving means 26, and the output means 27 (step 120). In step 119, the refrigerant discharge temperature is determined.
If it is above, pulse output means 25, transition means 26, output means
According to 27, the pulse type expansion valve is opened only by a specified minimum amount (step 121). Thereafter, in step 118 again, the refrigerant discharge temperature Td is compared with the specified refrigerant discharge temperature set value Td1, and the refrigerant discharge temperature T
Steps 119 to 121 are repeated until d becomes equal to the specified refrigerant discharge temperature set value Td1.
最後に、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Tcを比較手段３で比較
することにより（ステップ122）、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Tc以下の
場合、ステップ130とステップ106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、ステップ102とステップ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。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 122), thereby obtaining the indoor suction temperature. When the indoor suction temperature Tin is equal to or lower than the specified indoor suction temperature Tc, the process returns to the position between step 130 and step 106.
If the indoor suction temperature Tin exceeds the specified indoor suction temperature Tc, the process returns to the position between step 102 and step 103. This is because the optimal control for the dehumidifying operation was performed in each step by setting the operating frequency of the compressor according to the indoor load and adjusting the throttle opening of the pulse type expansion valve. When it occurs, it functions to switch from the dehumidifying operation to the normal cooling operation.
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、冷媒吐出温度によって、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。According to the above description, the present invention optimizes the operating frequency of the compressor, the rotational speed of the indoor fan motor, and the throttle opening of the pulse expansion valve according to the indoor suction temperature, the outside air temperature, the indoor relative humidity, and the refrigerant discharge temperature. By controlling to
The purpose is to create a comfortable living environment by maximizing the dehumidifying capacity while suppressing indoor temperature drop during dehumidifying operation.
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……外気温度検出手
段、９……パルス式膨張弁絞り回度検出手段、13……運
転周波数検出手段、17……室内相対湿度検出手段、21…
…冷媒吐出温度検出手段、３、７、11、15、19、23……
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 air temperature detecting means, 9 ... pulse type expansion valve throttling degree detecting means, 13 ... operating frequency detecting means, 17 ... indoor relative humidity detecting means, 21 ...
... Refrigerant discharge temperature detecting means, 3, 7, 11, 15, 19, 23 ...
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、この室内吸込温度と設定値を比較し制
御信号を出力する第１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、この室内相
対湿度と設定値を比較し制御信号を出力する第２の比較
手段と、運転周波数可変コンプレッサーと、空気調和機
の運転モード（冷房・暖房・除湿）を判定する判定手段
と、外気温度を検知し、出力する外気温度検出手段と、
この外気温度と設定値を比較し制御信号を出力する第３
の比較手段と、この比較手段により決定される、絞り量
可変パルス式膨張弁の絞り開度設定値を設定するパルス
式膨張弁絞り開度設定手段と、前記パルス式膨張弁の絞
り開度を移行するためのパルス出力手段及び移行手段と
出力手段と、前記第３の比較手段と、この比較手段によ
り決定される冷媒吐出温度設定値と冷媒吐出温度検出手
段により検出される冷媒吐出温度を比較し制御信号を出
力する第４の比較手段と、前記第４の比較手段からの信
号により前記パルス式膨張弁の開度を制御するためのパ
ルス出力手段及び移行手段と出力手段と、すべての比較
手段からの信号によりコンプレッサーの運転周波数を変
更する運転周波数変更手段と、室内ファンモータ回転速
度を変更する室内ファンモータ回転速度変更手段を設け
た空気調和機。An indoor suction temperature detecting means for detecting and outputting an indoor suction temperature, a first comparing means for comparing the indoor suction temperature with a set value and outputting a control signal, and detecting a relative humidity in the room. , An indoor relative humidity detecting means for outputting, a second comparing means for comparing the indoor relative humidity with a set value and outputting a control signal, an operating frequency variable compressor, and an operation mode of the air conditioner (cooling / heating / dehumidifying) ), An outside air temperature detecting unit that detects and outputs an outside air temperature,
The third step of comparing the outside air temperature with the set value and outputting a control signal.
And a pulse-type expansion valve throttle-opening setting means for setting a throttle-opening set value of the variable-aperture variable-pulse expansion valve, which is determined by the comparing means, and a throttle opening of the pulse-type expansion valve. Comparing the pulse output means for shifting, the shifting means and the output means, the third comparing means, and the refrigerant discharge temperature set value determined by the comparing means with the refrigerant discharge temperature detected by the refrigerant discharge temperature detecting means; A fourth comparing means for outputting a control signal, a pulse output means for controlling an opening degree of the pulse type expansion valve based on a signal from the fourth comparing means, a transition means, and an output means. An air conditioner provided with operating frequency changing means for changing the operating frequency of the compressor based on a signal from the means, and indoor fan motor rotation speed changing means for changing the indoor fan motor rotation speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2282128A JP2697282B2 (en) | 1990-10-19 | 1990-10-19 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2282128A JP2697282B2 (en) | 1990-10-19 | 1990-10-19 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04155139A JPH04155139A (en) | 1992-05-28 |
| JP2697282B2 true JP2697282B2 (en) | 1998-01-14 |
Family
ID=17648486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2282128A Expired - Fee Related JP2697282B2 (en) | 1990-10-19 | 1990-10-19 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2697282B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800419A (en) * | 2018-06-15 | 2018-11-13 | 广东美的制冷设备有限公司 | Control method, device, air conditioner and the remote controler of air conditioner |
| CN111412591A (en) * | 2020-03-12 | 2020-07-14 | 海信（山东）空调有限公司 | Constant-temperature dehumidification control method and device for air conditioning system, air conditioning system and medium |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12104833B2 (en) * | 2019-09-11 | 2024-10-01 | Gd Midea Air-Conditioning Equipment Co., Ltd. | Air conditioner and control method therefor |
| CN112032929B (en) * | 2020-08-31 | 2021-04-30 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device |
| CN113639410A (en) * | 2021-07-09 | 2021-11-12 | 青岛海尔空调电子有限公司 | Control method of electronic expansion valve in defrosting process of heat pump system and storage medium |
| CN115930366A (en) * | 2022-12-30 | 2023-04-07 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device, air conditioner and storage medium |
-
1990
- 1990-10-19 JP JP2282128A patent/JP2697282B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800419A (en) * | 2018-06-15 | 2018-11-13 | 广东美的制冷设备有限公司 | Control method, device, air conditioner and the remote controler of air conditioner |
| CN111412591A (en) * | 2020-03-12 | 2020-07-14 | 海信（山东）空调有限公司 | Constant-temperature dehumidification control method and device for air conditioning system, air conditioning system and medium |
| CN111412591B (en) * | 2020-03-12 | 2021-11-19 | 海信（山东）空调有限公司 | Constant-temperature dehumidification control method and device for air conditioning system, air conditioning system and medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04155139A (en) | 1992-05-28 |
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