JPH01127842A - Air conditioner - Google Patents

Air conditioner

Info

Publication number
JPH01127842A
JPH01127842A JP62285298A JP28529887A JPH01127842A JP H01127842 A JPH01127842 A JP H01127842A JP 62285298 A JP62285298 A JP 62285298A JP 28529887 A JP28529887 A JP 28529887A JP H01127842 A JPH01127842 A JP H01127842A
Authority
JP
Japan
Prior art keywords
power
amount
indoor unit
indoor
indoor units
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
Application number
JP62285298A
Other languages
Japanese (ja)
Inventor
Norio Suzuki
則夫 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP62285298A priority Critical patent/JPH01127842A/en
Publication of JPH01127842A publication Critical patent/JPH01127842A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To enable accurate determination of a used power amount by a method wherein a quantity of heat used by each of a plurality of indoor units is determined, and through distribution of an amount of a power used by an outdoor unit according to a ratio between quantities of heat used by the indoor units, amount of a power used by each indoor unit is determined. CONSTITUTION:Suction air temperatures T1 and T1 and discharge air temperatures T0 and T0 of indoor units 11 and 12 during cooling or heating operation are detected by sensors 21 and 22 and sensors 17 and 18, respectively, and read by a use power computing means 23. The use power computing means 23 reads the operation airflow tap of each of the indoor units 11 and 12, and converts it into an operation airflow G to determine quantities QA and QB of heat used by the indoor units 11 and 12, respectively, at intervals of a specified time, and an amount W of a power used by an outdoor unit 13 is read by a wattmeter 25. A use power computing means 23 distributes the use power amount W responding to a ratio between the quantities QA and QB of heat used according to a formula, I computes amounts W1A and W1B of a power used by the indoor units 11 and 12, respectively, at intervals of a specified time, and displays integrated using power amounts W2A and W2B on a remote control 24. This constitution enables approximately accurate computation of an amount of a power used by each indoor unit.

Description

【発明の詳細な説明】 〔発明の目的〕 (産業上の利用分野) 本発明は1台の室外ユニットに複数台の室内ユニットを
冷媒配管により接続するマルチ型の空気調和機に係り、
特に、各室内ユニット毎に使用電力量を演算する使用電
力ω演算手段を設けた空気調和機に関する。
[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a multi-type air conditioner in which a plurality of indoor units are connected to one outdoor unit by refrigerant piping.
In particular, the present invention relates to an air conditioner provided with power consumption ω calculation means for calculating the amount of power used for each indoor unit.

(従来の技術) 従来、この種のマルチ型空気調和機は第3図に示すよう
に構成され、例えばA、Bの2室内にそれぞれ設置され
る2台の室内ユニット1,2の各室内側熱交換器(図示
せず)に、室外ユニット3の図示しない室外側熱交換器
、コンプレッサ、四方弁等を冷媒配管4によりそれぞれ
接続して、冷媒を循環させる閉じた冷凍サイクルを構成
しており、四方弁の切換操作により室内A、Bをそれぞ
れ冷暖房するようになっている。
(Prior Art) Conventionally, this type of multi-type air conditioner is configured as shown in FIG. An outdoor heat exchanger (not shown), a compressor, a four-way valve, etc. (not shown) of the outdoor unit 3 are connected to a heat exchanger (not shown) through refrigerant piping 4 to form a closed refrigeration cycle in which refrigerant is circulated. The rooms A and B are heated and cooled respectively by switching the four-way valves.

室外ユニット3は電力計5を接続する給電線6を介して
電源に接続され、電力計5により室外ユニット3の使用
電力量を検出し、表示するようになっている。
The outdoor unit 3 is connected to a power source via a power supply line 6 that connects a wattmeter 5, and the wattmeter 5 detects and displays the amount of power used by the outdoor unit 3.

(発明が解決しようとする問題点) しかしながら、このような従来の空気調和機では各室内
ユニット1,2毎に使用電力量を検出する手段がないの
で、室外ユニット3の使用電力量を各室内ユニット2の
実際の使用電力債に即して公正に分配することが困難あ
るという問題がある。
(Problem to be Solved by the Invention) However, in such a conventional air conditioner, there is no means to detect the amount of power used by each indoor unit 1, 2, so the amount of power used by the outdoor unit 3 can be determined by There is a problem in that it is difficult to fairly distribute electricity according to the actual power consumption bond of unit 2.

すなわち、各室内ユニット1.2の実際の使用電力債は
各室内ユニット1.2の運転時間や動力源の馬力や空調
負荷の相違等により異なるので、1台の室外ユニット3
の使用電力量を各室内ユニット1.2に公正に分配する
ことができない。
In other words, the actual power consumption of each indoor unit 1.2 differs depending on the operating time of each indoor unit 1.2, the horsepower of the power source, the air conditioning load, etc.
It is not possible to fairly distribute the amount of power used to each indoor unit 1.2.

このために、従来の空気調和機では複数台の室内ユニッ
ト1.2の使用者が同一人であり、室外ユニット3の使
用電力債を各室内ユニット1.2毎に分配する必要がな
い場合に限られて使用されており、テナントビルのテナ
ントで各室内ユニット1.2の使用者が異なるような場
合には使用することができず、利用範囲が狭いという問
題がある。
For this reason, in conventional air conditioners, when the user of multiple indoor units 1.2 is the same person and there is no need to distribute the electricity usage credit of the outdoor unit 3 to each indoor unit 1.2, There is a problem that the use is limited and cannot be used in cases where the users of each indoor unit 1.2 are different among tenants of a tenant building, and the range of use is narrow.

そこで本発明は上記事情を考慮してなされたもので、そ
の目的は各室内ユニットの使用電力量をそれぞれ求める
ことができ、利用範囲の拡大を図ることができる空気調
和機を提供することにある。
Therefore, the present invention has been made in consideration of the above circumstances, and its purpose is to provide an air conditioner that can calculate the amount of power used by each indoor unit and expand its range of use. .

〔発明の構成〕[Structure of the invention]

(問題点を解決するための手段) 本発明は各室内ユニット相互の使用熱量の比率に応じて
室外ユニットの使用電力量を分配するものであり、次の
ように構成される。
(Means for Solving the Problems) The present invention distributes the power consumption of the outdoor units according to the ratio of the heat consumption of each indoor unit, and is configured as follows.

すなわち本発明は、1台の室外ユニットの室外側熱交換
器に複数台の室内ユニットの室内側熱交換器を冷媒配管
によりそれぞれ接続する空気調和機において、上記各室
内ユニットにおける吸込空気温度と吹出空気温度との湿
度差と、各室内ユニットの運転風量とをそれぞれ乗算し
て、使用熱ωをそれぞれ算出し、これら使用熱量の各室
内ユニット毎の比率に応じて上記室外ユニットの使用電
力量を各室内ユニット毎に分配して各室内ユニット毎の
使用電力量を求める使用電力は演算手段を有することを
特徴とする。
That is, the present invention provides an air conditioner in which the indoor heat exchangers of a plurality of indoor units are respectively connected to the outdoor heat exchanger of one outdoor unit by refrigerant piping, and the intake air temperature and outlet air temperature of each indoor unit are Calculate the heat usage ω by multiplying the humidity difference with the air temperature by the operating air volume of each indoor unit, and calculate the power usage of the outdoor unit according to the ratio of these heat usage for each indoor unit. The power consumption calculation method is characterized in that it has a calculation means for calculating the amount of power used by each indoor unit by distributing it to each indoor unit.

(作用) 各室内ユニットの使用電力量は各室内ユニット相互の使
用熱量の比率に応じて室外ユニットの使用電力量を分配
する使用電力演算手段により演算される。
(Function) The amount of power used by each indoor unit is calculated by a power usage calculating means that distributes the amount of power used by the outdoor units according to the ratio of the amount of heat used by each indoor unit.

したがって、本発明によれば、各室内ユニットの使用電
力債をほぼ正確に演算することができ、この種のマルチ
型の空気調和機の利用範囲の拡大を図ることができる。
Therefore, according to the present invention, it is possible to almost accurately calculate the power consumption of each indoor unit, and it is possible to expand the scope of use of this type of multi-type air conditioner.

(実施例) 以下本発明の一実施例を第1図および第2図に基づいて
説明する。
(Example) An example of the present invention will be described below based on FIGS. 1 and 2.

第1図は本発明の一実施例の全体構成図であり、例えば
2台の室内ユニット11.12の各室内側熱交換器11
A、12Aに室外ユニット13の室外側熱交換器(図示
せず)を冷媒配管14によりそれぞれ接続し、この室外
側熱交換器にはさらに図示しないコンプレッサ、四方弁
、減圧器等を冷媒配管14により接続し、冷媒を循環さ
せる閉じた冷凍サイクルを構成し、四方弁の切換操作に
より、各室内ユニット11.12が設置されている各室
内を冷暖房するようになっている。
FIG. 1 is an overall configuration diagram of an embodiment of the present invention. For example, each indoor heat exchanger 11 of two indoor units 11 and 12
An outdoor heat exchanger (not shown) of the outdoor unit 13 is connected to A and 12A by a refrigerant pipe 14, and a compressor, a four-way valve, a pressure reducer, etc. (not shown) are further connected to the refrigerant pipe 14 to this outdoor heat exchanger. are connected to form a closed refrigeration cycle that circulates refrigerant, and each room in which each indoor unit 11, 12 is installed is heated and cooled by switching the four-way valve.

各室内ユニット11.12の各吹出口15,16の近傍
に吹出空気の温度をそれぞれ検出する各吹出空気温度セ
ンサ17,18を、各吸込口19゜20の近傍には吸込
空気の温度をそれぞれ検出する各吸込空気温度センサ2
1,22をそれぞれ設置している。
Blow air temperature sensors 17 and 18 are installed near each outlet 15 and 16 of each indoor unit 11 and 12 to detect the temperature of the blown air, respectively, and near each suction port 19 and 20 are installed to detect the temperature of the intake air. Each intake air temperature sensor 2 to detect
1 and 22 are installed respectively.

これら各吹出空気温度センサ17,18と各吸込空気温
度センサ21.22とを図中−点鎖線で示す信号線を介
してマイコンよりなる使用電力演算手段23に電気的に
接続し、さらに使用電力演算手段23を信号線によりリ
モコン24と電力計25とに接続し、電力計25を、室
外ユニット13を電源に接続する給電線26に接続し、
室外ユニット13の使用電力量を電力計25により検出
するようになっている。
These outlet air temperature sensors 17, 18 and intake air temperature sensors 21, 22 are electrically connected to the power consumption calculation means 23, which is a microcomputer, through signal lines indicated by dashed lines in the figure. The calculation means 23 is connected to a remote control 24 and a wattmeter 25 via a signal line, and the wattmeter 25 is connected to a power supply line 26 that connects the outdoor unit 13 to a power source.
The amount of power used by the outdoor unit 13 is detected by a wattmeter 25.

使用電力演算手段23はリモコン24がらの使用電力量
演算要求に応じて各室内ユニット11゜12の各吸込空
気温度と各吹出空気温度との湿度差をそれぞれ求め、こ
れら各湿度差に各室内ユニット11.12の運転風量を
乗算して使用熱量をそれぞれ算出すると共に、各室内ユ
ニット11゜12相互の使用熱量の比率に応じて室外ユ
ニット13の使用電力量を分配し、各室内ユニット11
゜12毎の使用電力量を求めるものであり、その演算結
果をリモコン24の表示パネルに表示するようになって
いる。
The power usage calculation means 23 calculates the humidity difference between each intake air temperature and each outlet air temperature of each indoor unit 11 and 12 in response to a power usage calculation request from the remote controller 24, and calculates the humidity difference between each indoor unit and each indoor unit based on these humidity differences. The amount of heat used is calculated by multiplying the operating air volume of 11.
The amount of power used is calculated every 12 degrees, and the result of the calculation is displayed on the display panel of the remote controller 24.

第2図は使用電力演算手段23に内蔵されている使用電
力演算プログラムのフローチャートであり、図において
81〜S9はフローチャートのステップを示す。
FIG. 2 is a flowchart of the power usage calculation program built in the power usage calculation means 23, and in the figure, 81 to S9 indicate steps of the flowchart.

使用電力演算手段23はまず、Slで各室内ユニット1
1.12の各吸込空気温度センサ21゜22の検出値で
ある吸込空気温度T1.TIを読み込み、次にS2では
各吹出空気温度センサ17゜18の検出値である吹出空
気温度To、TOをそれぞれ読み込み、S3で各室内ユ
ニット11.12の運転JilfflGを、図示しない
運転風量タップの強、弱、微風を読み込むと共にJ!t
ffiに換算することにより求める。
The power usage calculation means 23 first calculates each indoor unit 1 using Sl.
1. The intake air temperature T1. which is the detection value of each intake air temperature sensor 21° 22 of 1.1. TI is read, and then, in S2, the outlet air temperatures To and TO, which are the detected values of each outlet air temperature sensor 17 and 18, are read, respectively, and in S3, the operating JilfflG of each indoor unit 11 and 12 is set to the operating air volume tap (not shown). Load strong, weak, and breeze and press J! t
It is obtained by converting to ffi.

次いでS4で各室内ユニット11.12の使用熱11Q
A、QBを冷暖房運転にそれぞれ応じて一定R11J(
例えば1分子!If)毎に次式により算出する。
Next, in S4, use heat 11Q of each indoor unit 11.12
A, QB are constant R11J (
For example, one molecule! If) is calculated using the following formula.

冷房運転時 QA (QB)−GX (T1−To)暖
房運転時 QA (QB)=GX (TO−TI )こ
の後の85では使用電力演算手段23は電力計25の検
出値である室外ユニット13の使用電力fiWを読み込
み、この使用電力ωWを、S4で求めた各室内ユニット
11.12相互の使用熱量QA、QBの比率に応じてS
6で分配し、各室内ユニット11.12毎の使用電力f
lW1A、W1Bをそれぞれ演算する。すなわち、各室
内ユニット11.12の各使用電力fiWA、W1Bは
次式により与えられる。
During cooling operation QA (QB) - GX (T1 - To) During heating operation QA (QB) = GX (TO - TI) In the following 85, the power usage calculation means 23 is the outdoor unit 13 which is the detected value of the wattmeter 25. The power usage fiW is read, and the power usage ωW is calculated by S according to the ratio of the mutual heat usage QA and QB of each indoor unit 11.12 determined in S4.
6, and the power consumption f for each indoor unit 11.12
Calculate lW1A and W1B respectively. That is, the power usage fiWA, W1B of each indoor unit 11.12 is given by the following equation.

次に87ではS6で求めた一定時間(1分間)毎の使用
電力量W1A、W、Bを一定時間経過毎に積算して、各
積算使用電力ff1W2 A、W2Bを ゛求め、S8
でこれら積算使用電力ff1W2A、W2Bを表示する
表示要求がリモコン24より出力されているか否か判断
し、この表示要求が出力されているときにはS9で各積
算電力fiW、、A、L。
Next, in 87, the electric power consumption W1A, W, and B for each fixed period of time (1 minute) obtained in S6 are integrated every fixed period of time, and each integrated electric power used ff1W2 A, W2B is calculated, and S8
Then, it is determined whether or not a display request to display these integrated power usage ff1W2A, W2B is output from the remote control 24. If this display request is output, in S9, each integrated power usage fiW, A, L is outputted.

Bをリモコン24の表示パネルに表示させ、表示要求が
出力されていないときはリモコン24の表示パネルに表
示せず、再びSlに戻り、上記作用を繰り返す。
B is displayed on the display panel of the remote controller 24, and when no display request is output, it is not displayed on the display panel of the remote controller 24, and the process returns to Sl again to repeat the above operations.

次に本実施例の作用を説明する。Next, the operation of this embodiment will be explained.

各室内ユニット11.12は各使用者により冷房または
暖房運転される。
Each indoor unit 11, 12 is operated for cooling or heating by each user.

このときの各室内ユニット11.12の各吸込空気温度
T1.Tlと各吹出空気温度To、TOとは各吸込空気
温度センサ21.22と各吹出空気温度センサ17.1
8とによりそれぞれ検出され、しかも、これら各検出値
は使用用力演1フ手段23により読み込まれる。
At this time, each intake air temperature T1 of each indoor unit 11.12. Tl and each outlet air temperature To, TO are each intake air temperature sensor 21.22 and each outlet air temperature sensor 17.1
8 and 8 respectively, and each of these detected values is read by the operating force input means 23.

また、使用電力部ロ手段23は各室内ユニット11.1
2の運転Jilffiタップが強、弱、微風のいずれに
あるかを読み込み、読み込んだタップを運転風1iGに
換算して所定の数式より各室内ユニット11.12毎の
使用熱量QA、QBを一定時間(例えば1分間)毎に求
めると共に、電力計25により室外ユニット13の使用
電力ff1Wを読み込む。
In addition, the power consumption section 23 is connected to each indoor unit 11.1.
Read whether the operating Jilffi tap in step 2 is in strong, weak, or light wind, convert the read tap into operating wind 1iG, and use the prescribed formula to calculate the amount of heat QA and QB used for each indoor unit 11.12 for a certain period of time. (for example, every minute), and the power consumption ff1W of the outdoor unit 13 is read by the wattmeter 25.

次に使用電力演算手段23はS6で示す数式に従って、
各室内ユニット11.12相互の使用熱IOA、QBの
比、率に応じて室外ユニット13の使用電力量Wを分配
し、一定時間毎に各室内ユニット11,12毎の使用電
力量WA、W1Bを演算し、一定時間の経過後毎に各使
用電力量W1A、W1Bを各室内ユニット11.12毎
に積算した積算使用電力ff1WA、W2Bをリモコン
24の表示パネル等に表示する。
Next, the power usage calculation means 23 calculates according to the formula shown in S6.
The power consumption W of the outdoor unit 13 is distributed according to the ratio and rate of heat used IOA and QB between each indoor unit 11 and 12, and the power consumption WA and W1B of each indoor unit 11 and 12 is distributed at regular intervals. is calculated, and the integrated power consumption ff1WA, W2B, which is obtained by integrating the power consumption W1A, W1B for each indoor unit 11.12, is displayed on the display panel of the remote controller 24, etc., every time after a certain period of time has elapsed.

したがって、本実施例によれば、各室内ユニット11.
12相互の使用熱量の比率に応じて室外ユニット13の
使用電力量を分配することにより各室内ユニット11.
12の使用電力ff1W、A。
Therefore, according to this embodiment, each indoor unit 11.
12, each indoor unit 11.
Power consumption of 12 ff1W, A.

WBおよび積算使用電力IW2 A、W2Bをそれぞれ
演算するので、はぼ正確に各室内ユニット11.12の
使用電力量W、A、W1Bおよび積算使用電力IWA、
W2B、を求めることができる。
Since WB and cumulative power usage IW2A, W2B are calculated respectively, the power usage W, A, W1B and cumulative power usage IWA,
W2B can be obtained.

その結果、各室内ユニット11.12の各使用者が互い
に異なるような場合にもこの種の空気調和機を利用する
ことができ、空気調和機の利用範囲の拡大を図ることが
できる。
As a result, this type of air conditioner can be used even when the users of each indoor unit 11, 12 are different from each other, and the range of use of the air conditioner can be expanded.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、複数台の室内ユニットの
使用熱量をそれぞれ求め、各室内ユニット相互の使用熱
量の比率に応じて室外ユニット使用電力量を分配するこ
とにより各室内ユニットの使用電力量を求めるので、各
室内ユニットの使用電力量をほぼ正確に求めることがで
きる。
As explained above, the present invention calculates the amount of heat used by each of a plurality of indoor units, and distributes the amount of power used by the outdoor units according to the ratio of the amount of heat used by each indoor unit, thereby reducing the amount of power used by each indoor unit. Therefore, the amount of power used by each indoor unit can be determined almost accurately.

その結果、各室内ユニットの使用者相互が異なる場合に
も空気調和機を利用することができ、その利用範囲の拡
大を図ることができる。
As a result, the air conditioner can be used even when the users of each indoor unit are different from each other, and the range of its use can be expanded.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係る空気講和機の一実施例の全体構成
図、第2図は第1図で示す実施例の使用電力演算手段の
使用電力演算プログラムのフローチャート、第3図は従
来の空気調和機の全体構成図である。 11.12・・・室内ユニット、11A、12A・・・
室内側熱交換器、13・・・室外ユニット、17゜18
・・・吹出空気温度センサ、21.22・・・吸込空気
温度センサ、23・・・使用電力演算手段、24・・・
リモコン。 代理人弁理士  則 近 憲 佑 同        宇  治     弘第1図 第3図 第2図
FIG. 1 is an overall configuration diagram of an embodiment of the air peace machine according to the present invention, FIG. 2 is a flowchart of a power usage calculation program of the power usage calculation means of the embodiment shown in FIG. 1, and FIG. FIG. 1 is an overall configuration diagram of an air conditioner. 11.12... Indoor unit, 11A, 12A...
Indoor heat exchanger, 13...Outdoor unit, 17°18
...Blowout air temperature sensor, 21.22...Suction air temperature sensor, 23...Power consumption calculation means, 24...
Remote controller. Representative Patent Attorney Ken Chika Yudo Hiroshi Uji Figure 1 Figure 3 Figure 2

Claims (1)

【特許請求の範囲】[Claims] 1台の室外ユニットの室外側熱交換器に複数台の室内ユ
ニットの室内側熱交換器を冷媒配管によりそれぞれ接続
する空気調和機において、上記各室内ユニットにおける
吸込空気温度と吹出空気温度との湿度差と、各室内ユニ
ットの運転風量とをそれぞれ乗算して、使用熱量をそれ
ぞれ算出し、これら使用熱量の各室内ユニット毎の比率
に応じて上記室外ユニットの使用電力量を各室内ユニッ
ト毎に分配して各室内ユニット毎の使用電力量を求める
使用電力量演算手段を有することを特徴とする空気調和
機。
In an air conditioner in which the indoor heat exchangers of multiple indoor units are connected to the outdoor heat exchanger of one outdoor unit through refrigerant piping, the humidity between the intake air temperature and outlet air temperature in each indoor unit is Calculate the amount of heat used by multiplying the difference by the operating air volume of each indoor unit, and distribute the amount of electricity used by the outdoor unit to each indoor unit according to the ratio of these amounts of heat used for each indoor unit. An air conditioner characterized in that it has a power consumption calculating means for determining the power consumption of each indoor unit.
JP62285298A 1987-11-13 1987-11-13 Air conditioner Pending JPH01127842A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62285298A JPH01127842A (en) 1987-11-13 1987-11-13 Air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62285298A JPH01127842A (en) 1987-11-13 1987-11-13 Air conditioner

Publications (1)

Publication Number Publication Date
JPH01127842A true JPH01127842A (en) 1989-05-19

Family

ID=17689713

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62285298A Pending JPH01127842A (en) 1987-11-13 1987-11-13 Air conditioner

Country Status (1)

Country Link
JP (1) JPH01127842A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04347438A (en) * 1991-05-22 1992-12-02 Daikin Ind Ltd Energy charge integrator of air conditioner
JPH0842901A (en) * 1994-07-29 1996-02-16 Showa Tekko Kk Heat consumption measurement method aimed to compute air conditioning service rate in air conditioning system
WO1997011317A1 (en) * 1995-09-20 1997-03-27 Hitachi, Ltd. Multi-chamber air-conditioner
US7062927B2 (en) * 2003-11-11 2006-06-20 Lg Electronics Inc. Central control system of air conditioners and method for operating the same
US7974740B2 (en) 2007-02-02 2011-07-05 Lg Electronics Inc. Integrated management system and method using setting information back-up for controlling multi-type air conditioners

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04347438A (en) * 1991-05-22 1992-12-02 Daikin Ind Ltd Energy charge integrator of air conditioner
JPH0842901A (en) * 1994-07-29 1996-02-16 Showa Tekko Kk Heat consumption measurement method aimed to compute air conditioning service rate in air conditioning system
WO1997011317A1 (en) * 1995-09-20 1997-03-27 Hitachi, Ltd. Multi-chamber air-conditioner
US7062927B2 (en) * 2003-11-11 2006-06-20 Lg Electronics Inc. Central control system of air conditioners and method for operating the same
US7974740B2 (en) 2007-02-02 2011-07-05 Lg Electronics Inc. Integrated management system and method using setting information back-up for controlling multi-type air conditioners

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