JPH03291446A - Defrost controller for air conditioner - Google Patents
Defrost controller for air conditionerInfo
- Publication number
- JPH03291446A JPH03291446A JP2092453A JP9245390A JPH03291446A JP H03291446 A JPH03291446 A JP H03291446A JP 2092453 A JP2092453 A JP 2092453A JP 9245390 A JP9245390 A JP 9245390A JP H03291446 A JPH03291446 A JP H03291446A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- outdoor unit
- frequency
- room temperature
- defrosting operation
- 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
- 238000010257 thawing Methods 0.000 claims abstract description 49
- 238000004378 air conditioning Methods 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims description 34
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、周波数制御可能な圧縮機を搭載した室外機を
２台有する空気調和機の除霜制御装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a defrosting control device for an air conditioner having two outdoor units equipped with frequency-controllable compressors.
従来の技術
周波数制御可能な圧縮機を搭載した室外機を２台有する
従来の空気調和機の除霜制御装置について図面を参照し
ながら説明する。BACKGROUND OF THE INVENTION A conventional defrosting control device for an air conditioner having two outdoor units equipped with frequency-controllable compressors will be described with reference to the drawings.
第３図は周波数制御可能な圧縮機を搭載した室外機を２
台有する従来の空気調和機の除霜制御装置のブロック図
であり、第４図は第３図の空気調和機の除霜制御装置に
おける第１の室外機が除霜運転しているときの空調制御
装置の動作を示すフローチャートである。Figure 3 shows two outdoor units equipped with frequency-controllable compressors.
FIG. 4 is a block diagram of a defrosting control device for a conventional air conditioner, and FIG. 4 shows air conditioning when the first outdoor unit in the defrosting control device for the air conditioner shown in FIG. 3 is a flowchart showing the operation of the control device.
第３図において、１は第１の室外機で、２は第２の室外
機である。３は第１の室外機１に設けられた周波数制御
可能な第１の圧縮機である。４は第１の室外機１に設け
られ第１の圧縮機３に周波数を出力する第１の周波数変
換装置である。６は第１の室外機１に設けられ第１の室
外機１の着霜を検知したとき検知信号を出力する第１の
着霜検知装置である。６は第２の室外機２に設けられた
周波数制御可能な第２の圧縮機である。７は第２の室外
機２に設けられ第２の圧縮機６に周波数を出力する第２
の周波数変換装置である。８は第２の室外機２に設けら
れ第２の室外機２の着霜を検知したとき検知信号を出力
する第２の着霜検知装置である。９は室内温度を検出す
る室温センサで、１０は室内温度を設定する温度設定器
である。１１は第１の着霜検知装置６の検知信号と第２
の着霜検知装置８の検知信号と室温センサ９の検出温度
と温度設定器１０の設定温度に応じて第１の室外機１も
しくは第２の室外機２に除霜運転させるとともに第１の
周波数変換装置４と第２の周波数変換装置７を制御する
空調制御装置である。In FIG. 3, 1 is a first outdoor unit, and 2 is a second outdoor unit. 3 is a frequency controllable first compressor provided in the first outdoor unit 1. Reference numeral 4 denotes a first frequency conversion device that is provided in the first outdoor unit 1 and outputs a frequency to the first compressor 3. A first frost detection device 6 is provided in the first outdoor unit 1 and outputs a detection signal when frost formation on the first outdoor unit 1 is detected. 6 is a second compressor provided in the second outdoor unit 2 and whose frequency can be controlled. 7 is provided in the second outdoor unit 2 and outputs a frequency to the second compressor 6.
This is a frequency conversion device. A second frost detection device 8 is provided in the second outdoor unit 2 and outputs a detection signal when frost formation on the second outdoor unit 2 is detected. 9 is a room temperature sensor that detects the indoor temperature, and 10 is a temperature setting device that sets the indoor temperature. 11 is the detection signal of the first frost detection device 6 and the second frost detection device 6;
The first outdoor unit 1 or the second outdoor unit 2 is caused to perform a defrosting operation according to the detection signal of the frost detection device 8, the detected temperature of the room temperature sensor 9, and the set temperature of the temperature setting device 10, and the first frequency is This is an air conditioning control device that controls the conversion device 4 and the second frequency conversion device 7.
次に、第１の室外機１が除霜運転しているときの空調制
御装置１１の動作を第４図のフローチャートを参照して
説明する。Next, the operation of the air conditioning control device 11 when the first outdoor unit 1 is in defrosting operation will be described with reference to the flowchart in FIG. 4.
第１の室外機１が除霜運転しているときは、ステップ１
をＹＥＳ側に分岐し、次のステップ２で室温センサ９か
ら室温を読み畠し、ステップ３で温度設定器１ｏから設
定温度を読み出す。このとき、室温が設定温度に到達し
ていなければ、次のステップ４をＮｏ側に分岐し、次の
ステップ６で第２の周波数変換装置７の出力周波数を階
段状に徐４に高くなるようにする。室温が設定温度に到
達すれば、ステップ４をＹ Ｅ Ｓ ＩＩＩＩｌに分岐
し、次のステップ６で第２の周波数変換装置Ｔの出力周
波数を所定の低い周波数に下げる。第１の室外機１の除
霜が終わると、ステップ１をＮ Ｏ［１に分岐し、次の
ステップ７で第１の室外機１に暖房運転させる。When the first outdoor unit 1 is in defrosting operation, step 1
is branched to the YES side, and in the next step 2, the room temperature is read from the room temperature sensor 9, and in step 3, the set temperature is read from the temperature setting device 1o. At this time, if the room temperature has not reached the set temperature, the next step 4 is branched to the No side, and the output frequency of the second frequency converter 7 is gradually increased stepwise in the next step 6. Make it. When the room temperature reaches the set temperature, step 4 is branched to YES III, and in the next step 6, the output frequency of the second frequency converter T is lowered to a predetermined low frequency. When the defrosting of the first outdoor unit 1 is completed, step 1 is branched to NO[1, and in the next step 7, the first outdoor unit 1 is caused to perform heating operation.
なお、空調制御装置１１は、第１の着霜検知装置５の検
知信号に応じて第１の室外機１の除霜を開始、終了する
。Note that the air conditioning control device 11 starts and ends defrosting of the first outdoor unit 1 according to a detection signal from the first frost detection device 5.
発明が解決しようとする課題
上記従来の空気調和機の除霜制御装置は、第１の室外機
１が除霜運転しているときで室温が設定温度に到達して
いないときは、第２の圧縮機６による暖房の能力が階段
状に徐４に大きくなるので、第１の室外機１の除霜運転
によって低下する室温を第２の室外機２の暖房運転で設
定温度にまで上げるのに時間がかかるという欠点があっ
た。Problems to be Solved by the Invention The above-mentioned conventional defrosting control device for an air conditioner has a defrosting control device for an air conditioner. Since the heating capacity of the compressor 6 gradually increases stepwise, the room temperature that drops due to the defrosting operation of the first outdoor unit 1 can be raised to the set temperature by the heating operation of the second outdoor unit 2. The drawback was that it was time consuming.
本発明は上記従来の空気調和機の除霜制御装置の課題に
濫み、２台の室外機のうちどちらか一方の室外機の除霜
運転によって低下する室温を残りの室外機の暖房運転で
設定温度にまで上げるのに時間がかからない空気調和機
の除霜制御装置を提供することを目的とする。The present invention solves the problem of the conventional defrosting control device for air conditioners, and solves the problem of the defrosting control device of the conventional air conditioner by controlling the room temperature that decreases due to the defrosting operation of one of the two outdoor units by heating the remaining outdoor unit. To provide a defrosting control device for an air conditioner that does not take time to raise the temperature to a set temperature.
課題を解決するだめの手段
上記目的を達成するために本発明の空気調和機の除霜制
御装置は、第１の室外機に設けられた周波数制御可能な
第１の圧縮機と、前記第１の室外機に設けられ前記第１
の圧縮機に周波数を出力する第１の周波数変換装置と、
前記第１の室外機に設けられ前記第１の室外機の着霜を
検知したとき検知信号を出力する第１の着霜検知装置と
、第２の室外機に設けられた周波数制御可能な第２の圧
縮機と、前記第２の室外機に設けられ前記第２の圧縮機
に周波数を呂）７する第２の周波数変換装置と、前記第
２の室外機に設けられ前記第２の室外機の着霜を検知し
たとき検知信号を出力する第２の着霜検知装置と、室内
温度を検出する室温センサと、室内温度を設定する温度
設定器と、前記第１の着霜検知装置の検知信号と前記第
２の着霜検知装置の検知信号と前記室温センサの検出温
度と前記温度設定器の設定温度に応じて前記第１の室外
機もしくは前記第２の室外機に除霜運転させるとともに
前記第１の周波数変換装置と前記第２の周波数変換装置
を制御する空調制御装置とからなり、前記第１の室外機
と前記第２の室外機のうちどちらか一方が除霜運転して
いるとき、前記空調制御装置は室温が低下しないように
、第１の周波数変換装置と第２の周波数変換装置のうち
除霜運転していないほうのものに前記温度設定器の設定
温度から前記室温センサの検出温度を引いた温度差に応
じてその温度差が大きい程高い周波数を直ちに出力させ
る構成になっている。Means for Solving the Problems In order to achieve the above objects, the defrosting control device for an air conditioner according to the present invention includes a first frequency controllable compressor provided in a first outdoor unit, and a provided in the outdoor unit of the first
a first frequency conversion device that outputs a frequency to the compressor;
a first frost detection device provided on the first outdoor unit and outputting a detection signal when detecting frost formation on the first outdoor unit; and a frequency controllable first frost detection device provided on the second outdoor unit. a second frequency converter provided in the second outdoor unit to change the frequency to the second compressor; and a second frequency converter provided in the second outdoor unit to change the frequency to the second compressor; a second frost detection device that outputs a detection signal when detecting frost formation on the machine; a room temperature sensor that detects indoor temperature; a temperature setting device that sets the indoor temperature; and the first frost detection device. causing the first outdoor unit or the second outdoor unit to perform a defrosting operation according to the detection signal, the detection signal of the second frost detection device, the detected temperature of the room temperature sensor, and the set temperature of the temperature setting device; and an air conditioning control device that controls the first frequency converter and the second frequency converter, and one of the first outdoor unit and the second outdoor unit is in a defrosting operation. When the air conditioner is in use, the air conditioning control device adjusts the setting temperature of the temperature setting device to the one of the first frequency converter and the second frequency converter that is not in defrosting operation so as not to lower the room temperature. The structure is such that the larger the temperature difference is, the higher the frequency is immediately outputted according to the temperature difference minus the temperature detected by the sensor.
外機と第２の室外機のうちどちらか一方が除霜運転して
いるとき、空調制御装置が室温が低下しないように、第
１の周波数変換装置と第２の周波数変換装置のうち除霜
運転していないほうのものに温度設定器の設定温度から
室温センサの検出温度を引いた温度差に応じてその温度
差が大きい程高い周波数を直ちに出力させるので、２台
の室外機のうちどちらか一方の室外機の除霜運転によっ
て低下する室温を残シの室外機の暖房運転で設定温度に
まで上げるのに時間がかからない。When one of the outdoor unit and the second outdoor unit is in defrosting operation, the air conditioning control device operates the defrosting operation of the first frequency converter and the second frequency converter so that the room temperature does not drop. Depending on the temperature difference obtained by subtracting the detected temperature of the room temperature sensor from the set temperature of the temperature setting device, the one that is not operating will immediately output a higher frequency as the temperature difference increases, so which of the two outdoor units It takes no time to raise the room temperature, which drops due to defrosting operation of one outdoor unit, to the set temperature by heating operation of the other outdoor unit.
実施例
以下、本発明の空気調和機の除霜制御装置の一実施例に
ついて図面を参照しながら説明する。Embodiment Hereinafter, an embodiment of the defrosting control device for an air conditioner according to the present invention will be described with reference to the drawings.
第１図は本発明の空気調和機の除霜制御装置の一実施例
における第１の室外機が除霜運転しているときの空調制
御装置の動作を示すフローチャトである。第２図は第１
図の空気調和機の除霜制御装置のブロック図である。FIG. 1 is a flowchart showing the operation of the air conditioning control device when the first outdoor unit is in defrosting operation in an embodiment of the defrosting control device for an air conditioner according to the present invention. Figure 2 is the first
FIG. 2 is a block diagram of a defrosting control device for the air conditioner shown in FIG.
なお、従来と同一構成の部分については従来のものと同
一の符号を付しその詳細な説明を省略する。It should be noted that parts having the same configuration as the conventional one are given the same reference numerals as the conventional one, and detailed explanation thereof will be omitted.
第２図において、１２は空調制御装置である。In FIG. 2, 12 is an air conditioning control device.
次に、第１の室外機１が除霜運転しているときの空調制
御装置１２の動作を第１図のフローチャートを参照して
説明する。Next, the operation of the air conditioning control device 12 when the first outdoor unit 1 is in defrosting operation will be described with reference to the flowchart in FIG.
第１の室外機１が除霜運転しているときは、ステップ８
をＹＥＳ側に分岐し、次のステップ９で室温センサ９か
ら室温ｘ１を読み出し、ステップ１０で温度設定器１０
から設定温度！。を読み出す。このとき、室温ｘ１が設
定温度Ｉ０よシ３°Ｃ以上低い場合は、次のステップ１
１をＹＥＳ側に分岐し、次のステップ１２で第２の周波
数変換装置７の出力周波数を直ちに９０田（第２の圧縮
機の能力が最大になる周波数）にする。設定温度ｘ０か
ら室温ｘ１を引いた温度差が３°Ｃ以下になれば、ステ
ップ１１をＮ０ｚｌに分岐する。このとき室温１１が設
定温度ｘ０に到達していなければ、次のステップ１３を
Ｎｏ側に分岐する。このとき設定温度Ｘ。から室温１１
を引いた温度差が２°Ｃ以上３°Ｃ未満のときは、ステ
ップ１４をＹＥＳ（２）ｊに分岐し、次のステップ１５
で第２の周波数変換装置７の出力周波数を直ちに７０円
（第２の圧縮機の能力が標準になる周波数）にする。設
定温度Ｉ０から室温１１を引いた温度差が２°Ｃ未満に
なれば、ステップ１４をＮｏ側に分岐し、次のステップ
、１６で第２の周波数変換装置７の出力周波数を直ちに
５０Ｈｚ（第２の圧縮機の能力が小になる周波数）にす
る。室温ｘ１が設定温度Ｘ。に到達すれば、ステップ１
３をＹＥＳ側に分岐し、次のステップ１７で第２の周波
数変換装置７の出ツＪ周波数を直ちに４０Ｈ，（第２の
圧縮機の能力が極小になる周波数）にする。第１の室外
機１の除玩が終わると、ステップ８をＮｏ側に分岐し、
次のステップ１８で第１の室外機１に暖房運転させる。When the first outdoor unit 1 is in defrosting operation, step 8
branch to the YES side, read the room temperature x1 from the room temperature sensor 9 in the next step 9, and read the room temperature x1 from the room temperature sensor 9 in step 10.
Set temperature from! . Read out. At this time, if the room temperature x1 is 3°C or more lower than the set temperature I0, proceed to the next step 1.
1 is branched to the YES side, and in the next step 12, the output frequency of the second frequency converter 7 is immediately set to 90° (the frequency at which the capacity of the second compressor is maximized). If the temperature difference obtained by subtracting the room temperature x1 from the set temperature x0 becomes 3°C or less, step 11 is branched to N0zl. At this time, if the room temperature 11 has not reached the set temperature x0, the next step 13 is branched to the No side. At this time, the set temperature is X. to room temperature 11
If the temperature difference obtained by subtracting the
The output frequency of the second frequency converter 7 is immediately set to 70 yen (the frequency at which the second compressor's capacity becomes standard). If the temperature difference obtained by subtracting the room temperature 11 from the set temperature I0 is less than 2°C, step 14 is branched to the No side, and in the next step 16, the output frequency of the second frequency converter 7 is immediately changed to 50 Hz (No. 2) to the frequency that reduces the capacity of the compressor. Room temperature x1 is set temperature X. If you reach step 1
3 to the YES side, and in the next step 17, the output J frequency of the second frequency converter 7 is immediately set to 40H, (the frequency at which the capacity of the second compressor becomes minimum). When the removal of the first outdoor unit 1 is completed, step 8 is branched to the No side,
In the next step 18, the first outdoor unit 1 is operated for heating.
なお、空調制御装置１２は第１の着霜検知装置５の検知
信号に応じて第１の室外機１の除霜を開始、終了する。Note that the air conditioning control device 12 starts and ends defrosting of the first outdoor unit 1 in response to a detection signal from the first frost detection device 5.
第２の室外機２が除霜運転しているときの空調制御装置
１２の動作については、第１の室外機１側と第２の室外
機２測とが入れ替わる他は第１の室外機１が除霜運転し
ているときの空調制御装置１２の動作と同様であるので
説明を省略する。Regarding the operation of the air conditioning control device 12 when the second outdoor unit 2 is in a defrosting operation, the first outdoor unit 1 side and the second outdoor unit 2 side are replaced, and the first outdoor unit 1 The operation is the same as that of the air conditioning control device 12 when it is in defrosting operation, so the explanation will be omitted.
以上のように本実施例の空気調和機の除霜制御装置では
、第１の室外機１と第２の室外機２のうちどちらか一方
が除霜運転しているとき、空調制御装置１２が室温が低
下しないように、第１の周波数変換装置４と第２の周波
数変換装置７のうち除霜運転していないほうのものに温
度設定器１０の設定温度から室温センサ９の検出温度を
引いた温度差に応じてその温度差が大きい程高い周波数
を直ちに出力させるので、２台の室外機１，２のうちど
ちらか一方の室外機の除霜運転によって低下する室温を
残シの室外機の暖房運転で設定温度にまで上げるのに時
間がかからない。As described above, in the air conditioner defrosting control device of this embodiment, when either the first outdoor unit 1 or the second outdoor unit 2 is in defrosting operation, the air conditioning control device 12 In order to prevent the room temperature from dropping, the temperature detected by the room temperature sensor 9 is subtracted from the set temperature of the temperature setting device 10 for the one of the first frequency converter 4 and the second frequency converter 7 that is not in defrosting operation. According to the temperature difference, the larger the temperature difference, the higher the frequency is immediately output. It takes no time to raise the temperature to the set temperature with the heating operation.
発明の詳細
な説明したように本発明の空気調和機の除霜制御装置で
は、第１の室外機と第２の室外機のうちどちらか一方が
除霜運転しているとき、空調制御装置が室温が低下しな
いように、第１の周波数変換装置と第２の周波数変換装
置のうち除霜運転していないほうのものに温度設定器の
設定温度から室温センサの検出温度を引いた温度差に応
じてその温度差が大きい程高い周波数を直ちに出力させ
るので、２台の室外機のうちどちらか一方の室外機の除
霜運転によって低下する室温を残シの室外機の暖房運転
で設定温度にまで上げるのに時間がかからず快適空調を
実現できる。DETAILED DESCRIPTION OF THE INVENTION As described in detail, in the defrosting control device for an air conditioner of the present invention, when either the first outdoor unit or the second outdoor unit is in defrosting operation, the air conditioning control device To prevent the room temperature from dropping, set the temperature difference between the first frequency converter and the second frequency converter, which is not in defrosting operation, to the set temperature of the temperature setting device minus the detected temperature of the room temperature sensor. The larger the temperature difference, the higher the frequency will be output immediately, so the room temperature that drops due to the defrosting operation of one of the two outdoor units can be brought to the set temperature by heating operation of the other outdoor unit. You can achieve comfortable air conditioning without taking much time to raise the temperature up to the maximum temperature.
第１図は本発明の空気調和機の除霜制御装置の一実施例
における第１の室外機が除霜運転しているときの空調制
御装置の動作を示すフローチャート、第２図は第１図の
空気調和機の除霜制御装置のブロック図、第３図は従来
の空気調和機の除霜制御装置のブロック図、第４図は第
３図の空気調和機の除霜制御装置における第１の室外機
が除霜運転しているときの空調制御装置の動作を示すフ
ローチャートである。
１・・・・・・第１の室外機、２・・・・・・第２の室
外機、３・・・・・・第１の圧縮機、４・・・・・・第
１の周波数変換装置、５・・・・・・第１０着霜検知装
置、６・・・・・・第２の圧縮機、７・・・・・・第２
の周波数変換装置、８・・・・・・第２の着霜検知装置
、９・・・・・・室温センサ、１０・・・・・・温度設
定器、１２・・・・・・空調制御装置。FIG. 1 is a flowchart showing the operation of the air conditioning control device when the first outdoor unit is in defrosting operation in an embodiment of the defrosting control device for an air conditioner according to the present invention, and FIG. FIG. 3 is a block diagram of a conventional defrost control device for an air conditioner, and FIG. 4 is a block diagram of a defrost control device for an air conditioner shown in FIG. 2 is a flowchart showing the operation of the air conditioning control device when the outdoor unit of FIG. 1...First outdoor unit, 2...Second outdoor unit, 3...First compressor, 4...First frequency Conversion device, 5...10th frost detection device, 6...2nd compressor, 7...2nd
frequency converter, 8...second frost detection device, 9...room temperature sensor, 10...temperature setter, 12...air conditioning control Device.
Claims (1)
機と、前記第１の室外機に設けられ前記第１の圧縮機に
周波数を出力する第１の周波数変換装置と、前記第１の
室外機に設けられ前記第１の室外機の着霜を検知したと
き検知信号を出力する第１の着霜検知装置と、第２の室
外機に設けられた周波数制御可能な第２の圧縮機と、前
記第２の室外機に設けられ前記第２の圧縮機に周波数を
出力する第２の周波数変換装置と、前記第２の室外機に
設けられ前記第２の室外機の着霜を検知したとき検知信
号を出力する第２の着霜検知装置と、室内温度を検出す
る室温センサと、室内温度を設定する温度設定器と、前
記第１の着霜検知装置の検知信号と前記第２の着霜検知
装置の検知信号と前記室温センサの検出温度と前記温度
設定器の設定温度に応じて前記第１の室外機もしくは前
記第２の室外機に除霜運転させるとともに前記第１の周
波数変換装置と前記第２の周波数変換装置を制御する空
調制御装置とからなり、前記第１の室外機と前記第２の
室外機のうちどちらか一方が除霜運転しているとき、前
記空調制御装置は室温が低下しないように、前記第１の
周波数変換装置と前記第２の周波数変換装置のうち除霜
運転していない方のものに前記温度設定器の設定温度か
ら前記室温センサの検出温度を引いた温度差に応じてそ
の温度差が大きい程高い周波数を直ちに出力させること
を特徴とする空気調和機の除霜制御装置。a first frequency controllable compressor provided in the first outdoor unit; a first frequency converter provided in the first outdoor unit and outputting a frequency to the first compressor; a first frost detection device that is provided on the first outdoor unit and outputs a detection signal when detecting frost on the first outdoor unit; and a second frost detection device that is provided on the second outdoor unit and that is frequency controllable. a compressor, a second frequency conversion device provided in the second outdoor unit and outputting a frequency to the second compressor, and a second frequency conversion device provided in the second outdoor unit and frosting the second outdoor unit. a second frost detection device that outputs a detection signal when detecting a second frost detection device; a room temperature sensor that detects indoor temperature; a temperature setting device that sets the indoor temperature; a detection signal of the first frost detection device; The first outdoor unit or the second outdoor unit is caused to perform a defrosting operation according to the detection signal of the second frost detection device, the detected temperature of the room temperature sensor, and the set temperature of the temperature setting device. and an air conditioning control device that controls the second frequency converter, and when either the first outdoor unit or the second outdoor unit is in defrosting operation, the In order to prevent the room temperature from dropping, the air conditioning control device changes the temperature of the room temperature sensor from the setting temperature of the temperature setting device to the one of the first frequency conversion device and the second frequency conversion device that is not in defrosting operation. A defrosting control device for an air conditioner, characterized in that the larger the temperature difference is, the higher the frequency is immediately output according to the temperature difference obtained by subtracting the detected temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2092453A JP2815456B2 (en) | 1990-04-06 | 1990-04-06 | Air conditioner defrost control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2092453A JP2815456B2 (en) | 1990-04-06 | 1990-04-06 | Air conditioner defrost control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03291446A true JPH03291446A (en) | 1991-12-20 |
| JP2815456B2 JP2815456B2 (en) | 1998-10-27 |
Family
ID=14054816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2092453A Expired - Fee Related JP2815456B2 (en) | 1990-04-06 | 1990-04-06 | Air conditioner defrost control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2815456B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596045A (en) * | 2015-02-12 | 2015-05-06 | 珠海格力电器股份有限公司 | Temperature control method for frequency converter of air conditioning system |
| CN113108363A (en) * | 2020-01-13 | 2021-07-13 | 青岛海尔空调电子有限公司 | Control method for defrosting of multi-connected air conditioning unit |
| CN114353286A (en) * | 2021-12-02 | 2022-04-15 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method |
-
1990
- 1990-04-06 JP JP2092453A patent/JP2815456B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596045A (en) * | 2015-02-12 | 2015-05-06 | 珠海格力电器股份有限公司 | Temperature control method for frequency converter of air conditioning system |
| CN104596045B (en) * | 2015-02-12 | 2017-08-01 | 珠海格力电器股份有限公司 | The temprature control method of air-conditioning system frequency conversion device |
| CN113108363A (en) * | 2020-01-13 | 2021-07-13 | 青岛海尔空调电子有限公司 | Control method for defrosting of multi-connected air conditioning unit |
| CN114353286A (en) * | 2021-12-02 | 2022-04-15 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2815456B2 (en) | 1998-10-27 |
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