JPH04198672A - Electric expansion valve controller for multi-chamber type air-conditioning machine - Google Patents
Electric expansion valve controller for multi-chamber type air-conditioning machineInfo
- Publication number
- JPH04198672A JPH04198672A JP2332529A JP33252990A JPH04198672A JP H04198672 A JPH04198672 A JP H04198672A JP 2332529 A JP2332529 A JP 2332529A JP 33252990 A JP33252990 A JP 33252990A JP H04198672 A JPH04198672 A JP H04198672A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- indoor
- expansion valve
- electric expansion
- detecting
- 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
- 238000004378 air conditioning Methods 0.000 title 1
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 16
- 239000003507 refrigerant Substances 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract 2
- 230000010485 coping Effects 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0232—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with bypasses
- F25B2313/02323—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with bypasses during heating
-
- 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
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- 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、−台の室外ユニットに対し、複数の室内ユニ
ットを冷媒配管で接続した多室形空気調和機の電動膨脹
弁制御装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric expansion valve control device for a multi-room air conditioner in which a plurality of indoor units are connected to two outdoor units by refrigerant piping. .
従来の技術
この種、多室形空気調和機は、複数の室内ユニットと接
続され、前記室内ユニットは、任意に居住者が運転した
り停止したりするところから、電動１脹弁制御は、きめ
細かに制御することが望ましい。こうした従来の多室形
空気調和機の電動膨脹弁制御装置は、第２図に示すよう
な回路構成となっていた。すなわち、室外ユニット１の
内部に圧縮機２．冷媒の旅路を切り換える四方弁３゜室
外熱交換器４．冷媒の絞り機構および冷媒流量制御用の
電動膨脹弁５．６．７を設けている。そして、前記圧縮
機２は、室内ユニット８，９．１０の各室内ユニットか
らの運転命令により駆動し、圧縮機２より吐出した冷媒
は前記四方弁３を通り、冷房時は前記室外熱交換器４に
より、暖房時は前記室内ユニット８，９．１０にて凝縮
され、前記電動膨駄弁５，６．７により減圧され、冷房
時は前記各室内ユニット８，９．１０で蒸発作用として
熱交換され、暖房時は前記室外熱交換器４で蒸発作用と
して熱交換されて、圧縮機２に戻るというヒートポンプ
式冷凍サイクルを形成している。また、前記電動膨脹弁
５，６．７は各室内ユニット８，９．１０に対応してお
り、各室内ユニット８．９．１０はそれぞれ室温検知用
サーミスタ１１．１２．１３と、室温設定用リモコン１
４゜１５．１６を備えている。例えば室内ユニット８．
９．１０のうち、運転しようとする室内ユニット８，９
が、前記室温設定用リモコン１４゜１５からの運転命令
を受信した場合、室内ユニット８，９は運転命令受信後
、前記室ｔＭ設定用リモコン１４．１５の室温設定値と
前記室温検知用サーミスタ１１．１２との温度差を検知
し、室内ユニットより信号線１７を介してインバータ部
１８に送信し、前記インバータ部１８は温度差データと
、室内ユニット８．９の能力ランクから圧縮機２の運転
周波数を決定すると同時に、信号１ｓ、１９を介して１
脹弁開度決定装置２０に室内ユニット８．９の能力ラン
ク値と、圧縮機２の運転周波数を伝えることにより、前
記１紐弁開度決定装置ｆ２０は、前記室内ユニット８，
９に対応する前記電動膨脹弁５．６の開度を決定する。2. Description of the Related Art This type of multi-room air conditioner is connected to a plurality of indoor units, and the indoor units can be started or stopped at will by a resident, so electric one-inflation valve control requires detailed control. It is desirable to control the Such a conventional electric expansion valve control device for a multi-room air conditioner has a circuit configuration as shown in FIG. That is, the compressor 2. is installed inside the outdoor unit 1. Four-way valve that switches the path of refrigerant 3° Outdoor heat exchanger 4. A refrigerant throttling mechanism and an electric expansion valve 5.6.7 for controlling the refrigerant flow rate are provided. The compressor 2 is driven by an operation command from each of the indoor units 8, 9, and 10, and the refrigerant discharged from the compressor 2 passes through the four-way valve 3, and during cooling, the refrigerant is transferred to the outdoor heat exchanger. 4, during heating, it is condensed in the indoor units 8, 9.10, and the pressure is reduced by the electric expansion valves 5, 6.7, and during cooling, heat is exchanged as evaporation in the indoor units 8, 9.10. During heating, heat is exchanged as evaporation in the outdoor heat exchanger 4 and returned to the compressor 2, forming a heat pump type refrigeration cycle. Further, the electric expansion valves 5, 6.7 correspond to each indoor unit 8, 9.10, and each indoor unit 8.9.10 has a thermistor 11, 12, 13 for detecting room temperature, and a thermistor for setting room temperature, respectively. Remote control 1
It is equipped with 4°15.16. For example, indoor unit 8.
9. Out of 10, indoor units 8 and 9 to be operated
However, when an operation command is received from the room temperature setting remote controller 14, 15, the indoor units 8, 9, after receiving the operation command, set the room temperature setting value of the room tM setting remote controller 14, 15 and the room temperature detection thermistor 11. .12 is detected and transmitted from the indoor unit to the inverter unit 18 via the signal line 17, and the inverter unit 18 operates the compressor 2 based on the temperature difference data and the capacity rank of the indoor unit 8.9. 1 via the signal 1s, 19 at the same time as determining the frequency.
By transmitting the capacity rank value of the indoor unit 8.9 and the operating frequency of the compressor 2 to the expansion valve opening determination device 20, the one-string valve opening determination device f20 determines the indoor unit 8,
The opening degree of the electric expansion valve 5.6 corresponding to point 9 is determined.
そして冷房時は運転停止している室内ユニット１０の電
動膨紐弁７は完全に閉止するようにしており、暖房時は
運転停止している室内ユニット１０の電動膨紐弁７を完
全に閉止してしまうと、室内ユニット８，９が暖房運転
をしていて、そのため圧縮機２が運転しているので、長
時間この状態を続けると、各室内ユニット８，９．１０
に設けられた室内熱交換器２１．２２．２３のうち室内
ユニット１０の室内熱交換器２３内に冷媒が凝縮してし
まい、実際の冷凍サイクル上で使用される冷媒量が不足
し、全体の冷凍サイクルのバランスが崩れて、暖房能力
が満足に出なくなったり、圧縮機２の吐出温度が高くな
って、圧縮機２の保護制御が動作し、室外ユニット１の
運転を停止してしまうため、室内熱交換器２３内に冷媒
が凝縮しないように、電動膨脹弁７は若干間いた状態に
していた。During cooling, the electric expansion string valve 7 of the indoor unit 10 that is out of operation is completely closed, and during heating, the electric expansion string valve 7 of the indoor unit 10 that is out of operation is completely closed. If this happens, the indoor units 8, 9 will be in heating operation, and the compressor 2 will be in operation, so if this state continues for a long time, each indoor unit 8, 9, 10
Among the indoor heat exchangers 21, 22, and 23 installed in If the balance of the refrigeration cycle collapses and the heating capacity is not satisfactory, or the discharge temperature of the compressor 2 becomes high, the protection control of the compressor 2 is activated and the operation of the outdoor unit 1 is stopped. In order to prevent refrigerant from condensing in the indoor heat exchanger 23, the electric expansion valve 7 was left open for a while.
発明が解決しようとする課題
このような従来の多室形空気調和機の電動膨駄弁制御装
置の構成では、暖房運転時、他の室内ユニットが暖房運
転をしているとき、運転停止している室内ユニットの熱
交換器には常に若干の高圧、高温の冷媒が流れており、
したがって１本来その部屋の暖房は不要であるのに、熱
交換器から熱をロスしてしまうという課題があった。Problems to be Solved by the Invention In the configuration of such a conventional electric expansion valve control device for a multi-room air conditioner, during heating operation, when other indoor units are performing heating operation, operation is stopped. A small amount of high-pressure, high-temperature refrigerant always flows through the heat exchanger of the indoor unit.
Therefore, there was a problem in that heat was lost from the heat exchanger even though heating the room was originally not necessary.
課題を解決するための手段
本発明は、上記課題を解決するもので、暖房運転時、他
の室内ユニットが運転しているときに、停止している室
内ユニットでの熱ロスをできるだけ少なくすることので
きる多室形空気調和機の電動１脹弁制御装置を提供する
ことを目的とするものである。Means for Solving the Problems The present invention solves the above problems, and aims to minimize heat loss in an indoor unit that is stopped while other indoor units are operating during heating operation. The object of the present invention is to provide an electric single-inflation valve control device for a multi-room air conditioner that can perform the following functions.
作 用
本発明の多室形空気調和機の電動１級弁制御装置は、上
記目的を達成するために、−台の室外ユニットに複数の
室内ユニットを接続し、前記各室内ユニットには、室内
熱交換器温度検知用サーミスタを備え、前記室外ユニッ
トには前記各室内ユニットに対応する数の電動膨脹弁を
設け、暖房運転時、運転停止している室内ユニットの前
記室内熱交換器温度検知用サーミスタの検出値と、運転
中の室内ユニットの室内熱交換器温度検知用サーミスタ
の検出値を比較することにより、運転停止している室内
ユニットの室内熱交換器内に冷媒が一定量以上凝縮する
と、電動膨騒井を若干間いて、凝縮した冷媒を室外熱交
換器側に流し、凝縮した冷媒が一定量以下になると再び
電動膨脹弁は完全閉止することとなる。Function: In order to achieve the above object, the electric first-class valve control device for a multi-room air conditioner of the present invention connects a plurality of indoor units to one outdoor unit, and each indoor unit has an indoor A thermistor for detecting heat exchanger temperature is provided, and the outdoor unit is provided with a number of electric expansion valves corresponding to the indoor units, and during heating operation, the indoor heat exchanger temperature is detected for the indoor unit that is not in operation. By comparing the detected value of the thermistor with the detected value of the indoor heat exchanger temperature detection thermistor of the indoor unit that is in operation, it is possible to detect if a certain amount of refrigerant has condensed in the indoor heat exchanger of the indoor unit that is not operating. , the electric expansion well is opened for a short time to allow the condensed refrigerant to flow to the outdoor heat exchanger side, and when the condensed refrigerant reaches a certain amount or less, the electric expansion valve is completely closed again.
実施例
以下、本発明の一実施例を第１図にもとづいて説明する
。なお、従来例と同一部分については同一番号を付けて
詳細な説明は省略する。EXAMPLE Hereinafter, an example of the present invention will be described based on FIG. Note that the same parts as in the conventional example are given the same numbers and detailed explanations are omitted.
図に示すように、電動膨脹弁５，６．７の制御に対して
、各室内ユニット８，９．１０のそれぞれの室内熱交換
器２１，２２．２３には、それぞれ室内熱交換器温度検
知用サーミスタ２４．．２５゜２６を備え、この室内熱
交換器温度検知用サーミスタ２４．２５．２６で検知し
た温度を信号線２７を介して、室外ユニット１の１脹弁
開度決定装置２０に送信するように構成する。As shown in the figure, each indoor heat exchanger 21, 22.23 of each indoor unit 8, 9.10 has an indoor heat exchanger temperature sensor for controlling the electric expansion valve 5, 6.7. Thermistor 24. ．． 25° 26, and is configured to transmit the temperature detected by the indoor heat exchanger temperature detection thermistor 24, 25, 26 to the 1-inflation valve opening determination device 20 of the outdoor unit 1 via a signal line 27. do.
上記構成において、例えば、室内ユニット８゜９が暖房
運転をしており、室内ユニット１０が運転停止している
場合、最初は室内ユニット１００室内熱交換器２３内の
冷媒はガス状態で、冷媒の温度は圧縮４１１２の吐出温
度と冷媒の飽和蒸気温度のほぼ中間の温度であるが、室
内熱交換器２３で室内の空気と徐々に熱交換されて、冷
媒のＷＪＩは凝縮温度（飽和蒸気温度）まで下がり、前
記室内熱交換器２３内で凝縮され、凝縮された冷媒は室
内熱交換器２３の下方に溜まって（る。また各室内熱交
換器２１，２２．２３の圧力は圧縮機２の吐出圧力にほ
ぼ近い状態で等しく、したがって、凝縮した冷媒の温度
は飽和蒸気状態であれば、暖房運転をしている室内ユニ
ット８．９の室内熱交換器２１．２２内で凝縮している
ものと、運転停止している室内ユニット１０の室内熱交
換器２３内で凝縮しているものは等しくなるので、運転
している室内ユニット８，９の室内熱交換器温度検出用
サーミスタ２４．２５の検出値と運転停止している室内
ユニット１０の室内熱交換器温度検出用サーミスタ２６
の検出値を比較することにより、運転停止している室内
ユニット１０の室内熱交換器２３内の冷媒の凝縮状態を
検知し、凝縮した冷媒が室内熱交換器２３の下方に溜ま
って、室内熱交換器温度検知用サーミスタ２６の検出値
が一定以下の温度になると、信号線２７を介して１脹弁
開度決定装置２０に送信し、電動膨瓶弁７を若干間いて
、凝縮した冷媒を室外熱交換器４側に流し、室内熱交換
器温度検知用サーミスタ２６の検出値が一定以上の温度
になると、再び電動膨脹弁７は完全閉止するようにして
いるのである。In the above configuration, for example, when the indoor unit 89 is in heating operation and the indoor unit 10 is not operating, the refrigerant in the indoor heat exchanger 23 of the indoor unit 100 is initially in a gas state; The temperature is approximately halfway between the discharge temperature of the compression 4112 and the saturated vapor temperature of the refrigerant, but as the heat is gradually exchanged with the indoor air in the indoor heat exchanger 23, the WJI of the refrigerant reaches the condensation temperature (saturated vapor temperature) The refrigerant cools down to the temperature of the indoor heat exchanger 23 and is condensed in the indoor heat exchanger 23, and the condensed refrigerant accumulates below the indoor heat exchanger 23. If the temperature of the condensed refrigerant is in a saturated vapor state, it is almost equal to the discharge pressure, and therefore the temperature of the condensed refrigerant is the one condensed in the indoor heat exchanger 21.22 of the indoor unit 8.9 in heating operation. Since the amount condensed in the indoor heat exchanger 23 of the indoor unit 10 that is not in operation is equal to Detection value and indoor heat exchanger temperature detection thermistor 26 of the indoor unit 10 that is not operating
By comparing the detection values of When the detected value of the exchanger temperature detection thermistor 26 reaches a certain temperature or lower, it is transmitted to the expansion valve opening determination device 20 via the signal line 27, and the electric expansion valve 7 is slightly closed to discharge the condensed refrigerant. When the temperature detected by the indoor heat exchanger temperature detection thermistor 26 exceeds a certain level, the electric expansion valve 7 is completely closed again.
発明の効果
以上の実施例から明らかなように、本発明によれば暖房
運転時、運転停止している室内ユニットの室内熱交換器
温度検知用サーミスタの検出値と運転中の室内ユニット
の室内熱交換器温度検知用サーミスタの検出値を比較し
て、運転停止している室内ユニットに対応する前記電動
膨駄弁の開度を制御するようにしたので、通常は運転停
止している室内ユニットに対応する電動膨脹弁は完全に
閉仕することができ、したがって熱ロスを最小限にする
ことができるという効果を有する多室形空気調和機の電
動１騒弁制御装置を提供できる。Effects of the Invention As is clear from the above embodiments, according to the present invention, during heating operation, the detected value of the indoor heat exchanger temperature detection thermistor of the indoor unit that is not in operation and the indoor heat of the indoor unit that is in operation are By comparing the detection value of the exchanger temperature detection thermistor, the opening degree of the electric expansion valve corresponding to the indoor unit that is out of operation is controlled, so it is compatible with the indoor unit that is normally out of operation. An electric expansion valve control device for a multi-room air conditioner can be provided, which has the effect of completely closing the electric expansion valve, thereby minimizing heat loss.
第１図は本発明の一実施例による多室形空気調和機の電
動１脹弁制御装置の冷凍サイクル図、第２図は従来の多
室形空気調和機の電動１脹弁制御装置の冷凍サイクル図
である。
１・・・・・・室外ユニット、２・・・・・・圧縮機、
５，６゜７・・・・・・電動膨脹弁、８．９．１０・・
・・・・室内ユニット、２１，２２．２３・・・・・・
室内熱交換器、２４゜２５．２６・・・・・・室内熱交
換器温度検出用サーミスタ。
代理人の氏名 弁理士小蝦治 明ほか２名ｔ−’？Ｌユ
ニーノド
２−・−圧縮機゛Fig. 1 is a refrigeration cycle diagram of an electric one-inflation valve control device for a multi-chamber air conditioner according to an embodiment of the present invention, and Fig. 2 is a refrigeration cycle diagram for a conventional electric one-inflation valve control device for a multi-chamber air conditioner. It is a cycle diagram. 1...Outdoor unit, 2...Compressor,
5,6゜7...Electric expansion valve, 8.9.10...
...Indoor unit, 21,22.23...
Indoor heat exchanger, 24°25.26... Indoor heat exchanger temperature detection thermistor. Name of agent: Patent attorney Akira Koebi and two others t-'? L unit node 2--compressor
Claims (1)
記各室内ユニットには、室内熱交換器温度検知用サーミ
スタを備え、前記室外ユニットには前記各室内ユニット
に対応する数の電動膨脹弁を設け、暖房運転時、運転停
止している室内ユニットの前記室内熱交換器温度検知用
サーミスタの検出値と、運転中の室内ユニットの室内熱
交換器温度検知用サーミスタの検出値と比較して、運転
停止している室内ユニットに対応する前記電動膨脹弁の
開度を制御するように構成した多室形空気調和機の電動
膨脹弁制御装置。A plurality of indoor units are connected to one outdoor unit, each of the indoor units is equipped with a thermistor for detecting the indoor heat exchanger temperature, and the outdoor unit is equipped with a number of electric expansion valves corresponding to the number of indoor units. provided, and during heating operation, compare the detection value of the indoor heat exchanger temperature detection thermistor of the indoor unit that is not operating with the detection value of the indoor heat exchanger temperature detection thermistor of the indoor unit that is in operation, An electric expansion valve control device for a multi-room air conditioner configured to control the opening degree of the electric expansion valve corresponding to an indoor unit that is out of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332529A JPH04198672A (en) | 1990-11-28 | 1990-11-28 | Electric expansion valve controller for multi-chamber type air-conditioning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332529A JPH04198672A (en) | 1990-11-28 | 1990-11-28 | Electric expansion valve controller for multi-chamber type air-conditioning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04198672A true JPH04198672A (en) | 1992-07-20 |
Family
ID=18255940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2332529A Pending JPH04198672A (en) | 1990-11-28 | 1990-11-28 | Electric expansion valve controller for multi-chamber type air-conditioning machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04198672A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1555492A3 (en) * | 2004-01-19 | 2006-06-07 | Lg Electronics Inc. | Method for controlling multi-type air conditioner |
| JP2008196775A (en) * | 2007-02-13 | 2008-08-28 | Sharp Corp | Air conditioner |
| CN106016536A (en) * | 2016-06-07 | 2016-10-12 | 张安 | Single-compression-cylinder air conditioner and control method for refrigerants thereof |
| EP3647680A4 (en) * | 2017-08-02 | 2020-07-01 | Qingdao Haier Air-Conditioning Electronic Co., Ltd | Method and device for controlling expansion valve |
| CN113834180A (en) * | 2021-10-19 | 2021-12-24 | 宁波奥克斯电气股份有限公司 | Self-adaptive method, device and system for multi-split long-connected pipe output |
| CN114688698A (en) * | 2022-03-28 | 2022-07-01 | 青岛海尔空调器有限总公司 | Accurate control method and device for air conditioner and storage medium thereof |
-
1990
- 1990-11-28 JP JP2332529A patent/JPH04198672A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1555492A3 (en) * | 2004-01-19 | 2006-06-07 | Lg Electronics Inc. | Method for controlling multi-type air conditioner |
| US7131283B2 (en) | 2004-01-19 | 2006-11-07 | Lg Electronics Inc. | Method for controlling multi-type air conditioner |
| JP2008196775A (en) * | 2007-02-13 | 2008-08-28 | Sharp Corp | Air conditioner |
| CN106016536A (en) * | 2016-06-07 | 2016-10-12 | 张安 | Single-compression-cylinder air conditioner and control method for refrigerants thereof |
| CN106016536B (en) * | 2016-06-07 | 2018-11-30 | 张安 | The control method of the refrigerant of single compression cylinder air-conditioning |
| EP3647680A4 (en) * | 2017-08-02 | 2020-07-01 | Qingdao Haier Air-Conditioning Electronic Co., Ltd | Method and device for controlling expansion valve |
| CN113834180A (en) * | 2021-10-19 | 2021-12-24 | 宁波奥克斯电气股份有限公司 | Self-adaptive method, device and system for multi-split long-connected pipe output |
| CN113834180B (en) * | 2021-10-19 | 2022-07-08 | 宁波奥克斯电气股份有限公司 | Self-adaptive method, device and system for multi-split long-connected pipe output |
| CN114688698A (en) * | 2022-03-28 | 2022-07-01 | 青岛海尔空调器有限总公司 | Accurate control method and device for air conditioner and storage medium thereof |
| CN114688698B (en) * | 2022-03-28 | 2024-06-04 | 青岛海尔空调器有限总公司 | Air conditioner accurate control method and device and storage medium thereof |
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