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JP3670054B2 - Air conditioner - Google Patents
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JP3670054B2 - Air conditioner - Google Patents

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Publication number
JP3670054B2
JP3670054B2 JP17089695A JP17089695A JP3670054B2 JP 3670054 B2 JP3670054 B2 JP 3670054B2 JP 17089695 A JP17089695 A JP 17089695A JP 17089695 A JP17089695 A JP 17089695A JP 3670054 B2 JP3670054 B2 JP 3670054B2
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Japan
Prior art keywords
unit
indoor unit
indoor
controller
air conditioner
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JP17089695A
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Japanese (ja)
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JPH0921573A (en
Inventor
信浩 吉川
右文 前田
坂本  明
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Description

【0001】
【発明の属する技術分野】
この発明は、室外機に対して複数台の室内機が接続された空気調和機に関し、特に分流ユニット内のどの電磁弁とどの室内機とが接続されているのかを検知することが可能な空気調和機に関するものである。
【0002】
【従来の技術】
図5は、例えば特開平5−141819号公報に示された従来の空気調和機を示す構成図、図6はそれの動作説明用のフローチャートである。1台の室外機について3台の室内機が接続され、3台の室内機が全て冷房運転されている状態を示している。図において、1は室外機、2は圧縮機、3はこれに直列接続された室外機側熱交換器、4は高圧側配管、5は低圧側配管、6は分流ユニット、7a,7b,7cは分流ユニット6内に配設され、高圧側配管4からそれぞれ分岐する各高圧側分岐管8a,8b,8cに接続される電磁弁である。
【0003】
9a,9b,9cは各室内(図示しない)にそれぞれ配設される室内機、10a,10b,10cは各室内機9a,9b,9c内に配設され、各高圧側分岐管8a,8b,8cにそれぞれ接続される流量制御器、11a,11b,11cはそれぞれの一端が各流量制御器10a,10b,10cに接続され、他端が低圧側配管5からそれぞれ分岐する各低圧側分岐管12a,12b,12cに接続される室内側熱交換器である。
【0004】
13は室外機コントローラ、14は分流ユニットコントローラ、15a,15b,15cは室内機コントローラ、16a,16b,16cはリモートコントローラ、17はこれら室外機コントローラ13、分流ユニットコントローラ14、各室内機コントローラ15a,15b,15c及び各リモートコントローラ16a,16b,16c間をそれぞれ接続し伝送信号を送出するための伝送信号線である。
【0005】
18は、室外機コントローラ13内に設置され、試運転開始で分流ユニットコントローラ14及び各室内機コントローラ15a,15b,15cに試運転開始信号を送出し、各室内機9a,9b,9c内の各流量制御器10a,10b,10cを開に、また、分流ユニット6内の各電磁弁7a,7b,7cを1個ずつ、所定の時間間隔で順次開に操作する試運転制御手段、19a,19b,19cは、各室内機コントローラ15a,15b,15c内に設置され、各電磁弁7a,7b,7cが開放されて所定時間経過毎に、それぞれの室内機内の配管温度を測定し、配管温度が所望温度に到達している場合は、その室内機がその時点で開放されている電磁弁と接続されているということを確認検知する配管接続検知手段である。
【0006】
次に、上記のように構成された従来の空気調和機の動作を、図5のフローチャートによって説明する。まず、試運転が開始されると試運転スイッチがオン(ステップ1)し、試運転制御手段18は、室外機コントローラ13を介して圧縮機3を稼働(ステップS2)させるとともに、各室内機コントローラ15a,15b,15cを介して各流量制御器10a,10b,10cを開(ステップS3)にした後、最初であるのでnを1とし(ステップS4)、分流ユニットコントローラ14を介してn(=1)番目の電磁弁7aを開(ステップS5)にする。
【0007】
次に、例えば、各室内機9a,9b,9cの冷暖房運転開始に要する時間である所定時間経過する(ステップS6)と、各配管接続検知手段19a,19b,19cは、それぞれの室内機9a,9b,9cの配管温度を測定(ステップS7)する。そして、その測定結果、配管温度が冷房温度に到達している室内機、この場合は室内機9aに対する室内機コントローラ15a内の配管接続検知手段19aが、電磁弁7aと室内機9aとが接続されていることを認識(ステップS8)して、試運転制御手段18へその旨信号を出力する。この信号を受けた試運転制御手段18は、電磁弁7aを閉(ステップS9)にし、回数nが電磁弁総数Nに達しているかを判定(ステップS10)し、総数Nに達していないので、nに1を加え(ステップS11)、即ちn=2としてステップS5に戻る。
【0008】
以下、順次電磁弁7b,7cの順に各電磁弁を1個づつ開にし、上記ステップS5〜ステップS11の動作を繰り返し、繰り返し回数nが電磁弁総数N、いまの場合3に達したら試運転は終了する。このようにして、分流ユニット6内の各電磁弁7a,7b,7cと各室内機9a,9b,9cとの対応関係が検知されるので、通常運転において設定ミス等の誤動作が防止される。
【0009】
【発明が解決しようとする課題】
従来の空気調和機は以上のように構成されているので、1分流ユニットに接続される室内機の数が増えたり、1室外機に複数の分流ユニットが接続された場合等においては、電磁弁との対応関係を検知されるべき室内機の数が多くなり、上述のように電磁弁を1個ずつ開にして対応する室内機を検知していたのでは、検知に時間がかかりすぎるという問題点があった。
【0010】
この発明は上記のような問題点を解消するためになされたもので、分流ユニットに多数の室内機が接続された場合でも、複数の分流ユニットが接続されている場合でも、各室内機と分流ユニットの各電磁弁との対応関係を、短時間で正確に検知し、所望の室内機の冷暖房を確実に行える空気調和機を得ることを目的とする。
【0011】
この発明にかかる空気調和機は、室外機を冷房または暖房状態で圧縮機を運転させるとともに、分流ユニット及び各室内機を制御する分流ユニットコントローラ及び各室内機コントローラに試運転開始信号を送出し、上記全室内機内の全流量制御器を開にし、そして、上記分流ユニット内の開中の電磁弁の略半分を閉と、閉中の電磁弁の略半分を開とする動作を、電磁弁総数をNとした場合、m>log Nを満足する最初の自然数をmとしてm回、すべての電磁弁について互いに異なるパターンで、所定時間間隔で順次行なう試運転制御手段と、上記電磁弁の開閉動作から所定時間経過毎に上記各室内機内の配管温度をそれぞれ測定する配管温度測定手段と、この手段によって測定された配管温度の変化状態に応じて、各室内機とこれに接続される電磁弁との対応関係を検知する対応関係検知手段とを備えたものである。
【0012】
また、上記のものにおいて、分流ユニットを1室外機に対し複数設けたものである。
さらに、上記のものにおいて、配管接続検知手段にて検知された電磁弁と室内機との対応関係を、この室内機が接続されている分流ユニットを制御する分流ユニットコントローラ中の不揮発性メモリに記憶させたものである。
さらにまた、上記のものにおいて、配管接続検知手段にて検知された電磁弁と室内機との対応関係を、この室内機を制御する室内機コントローラ中の不揮発性メモリに記憶させたものである。
【0013】
【作用】
この発明においては、1または複数の分流ユニット内の開中の電磁弁の略半分を閉と、閉中の電磁弁の略半分を開とする動作が複数回繰り返されることにより、これらに接続されてる室内機の配管温度の変化状態が各室内機毎に異なってき、これら配管温度の変化状態を検知することにより電磁弁と室内機との対応関係が少ない繰り返し回数で特定でき、この対応関係が分流ユニットコントローラ中、或は室内機コントローラ中の不揮発性メモリに記憶される。
【0014】
【発明の実施の形態】
実施例1.
以下、この発明の実施例を図について説明する。図1はこの発明の実施例1を示す構成図、図2は実施例1の主要部の構成を示すブロック線図、図3はそれの動作説明用のフローチャート、図4は電磁弁と室内機との対応関係の一例を示す表である。1台の室外機について2個の分流ユニットが接続され、各分流ユニットにそれぞれ3台の室内機が接続され、6台の室内機が全て冷房運転されている状態を示している。
【0015】
図において、1は室外機、2は圧縮機、3は室外機側熱交換器、4は室外機と分流ユニット間の高圧側配管、5は低圧側配管、6a,6bは分流ユニット、7a,7b,7c,7d,7e,7fは電磁弁、8a,8b,8c,8d,8e,8fは分流ユニットと室内機間の高圧側配管、9a,9b,9c,9d,9e,9fは室内機、10a,10b,10c,10d,10e,10fは流量制御器、11a,11b,11c,11d,11e,11fは室内側熱交換器、12a,12b,12c,12d,12e,12fは分流ユニットと室内機間の低圧側配管である。
【0016】
13は室外機コントローラ、131は室外機用中央演算装置(以下、室外機用CPUという)、132は伝送信号線17を介して多重伝送を行う伝送部、133は書き込まれたプログラムの読み出し専用メモリ(以下、室外機用ROMという)、134は電気的書き込み及び読み出しが可能なメモリ(以下、室外機用RAMという)、135は圧縮機3を駆動制御するインバータ部、136は試運転時に操作される試運転スイッチである。
【0017】
14a,14bは分流ユニットコントローラ、14a1,14b1は分流ユニット用CPU、14a2,14b2は伝送部、14a3,14b3は分流ユニット用ROM、14a4,14b4は分流ユニット用RAM、14a5,14b5は各電磁弁7a,7b,7c,7d,7e,7fへの開閉信号を出力する電磁弁出力回路、14a6,14b6は随時書き込み読み出しが可能で停電等によっても記憶内容が消去されない分流ユニット用不揮発性メモリである。
【0018】
15a,15b,15c,15d,15e,15fは室内機コントローラ、15a1〜15d1〜は各室内機用CPU、15a2〜15d2〜は各伝送部、15a3〜15d3〜は各流量制御器10a〜10fへの開閉信号を出力する流量制御器出力回路、15a4〜15d4〜は各室内機用不揮発性メモリである。16a,16b,16c,16d,16e,16fはリモートコントローラ、17は伝送信号線である。
【0019】
20は、室外機コントローラ13内に設置され、試運転開始で分流ユニットコントローラ14a,14b及び各室内機コントローラ15a〜15fに試運転開始信号を送出し、全室内機内の全流量制御器10a〜10fを開に、また、分流ユニット6a,6b内の全電磁弁7a〜7fの内、開中の電磁弁の略半分を閉と、閉中の電磁弁の略半分を開とする動作を、所定時間間隔で順次行なう試運転制御手段である。
【0020】
21a,21b,21c,21d,21e,21fは、各室内機コントローラ15a〜15f内に設置され、電磁弁の略半分ずつの開閉動作から所定時間経過毎に、各室内機9a〜9f内の配管温度を測定して、その配管温度の変化データを対応する各分流ユニットコントローラ14a,14bに伝送する配管温度測定手段、22a,22bは、各分流ユニットコントローラ14a,14b内に設置され、各室内機9a〜9fの配管温度測定手段21a〜21fからの配管温度の変化データと各電磁弁の開閉パターンとから各電磁弁と室内機との対応関係データを算出してそれぞれの不揮発性メモリ14a6,14b6に記憶させる対応関係検知手段である。
【0021】
次に、この実施例1の動作を図3のフローチャートによって説明する。まず、試運転が開始されると試運転スイッチ136がオン(ステップ21)され、試運転制御手段20により、室外機コントローラ13を介して圧縮機3が稼働(ステップS22)されるとともに、各室内機コントローラ15a〜15fを介して各流量制御器10a〜10fが開(ステップS23)とされた後、最初であるのでmが1とされ(ステップS24)、分流ユニットコントローラ14a,14bを介して、閉中の全電磁弁7a〜7fの内の半分、電磁弁7a,7b,7cが開(ステップS25)とされる。
【0022】
次に、例えば、各室内機9a〜9fの冷暖房運転開始に要する時間である所定時間経過する(ステップS26)と、各配管温度測定手段21a〜21fにより、それぞれの室内機9a〜9fの配管温度が測定(ステップS27)され、配管温度が冷房温度に到達していれば符号‘1’が、配管温度に変化がなければ符号‘0’の信号がそれぞれの室内機に付与された符号として分流ユニットコントローラ14a,14bに送出(ステップS28)されるとともに、室外機コントローラ13にも送出される。
【0023】
この信号を受けた試運転制御手段20では、2のm乗が電磁弁総数Nに達しているかが判定(ステップS29)され、総数Nに達していないので、mに1が加え(ステップS30)られてm=2となり今度は、分流ユニットコントローラ14a,14bを介して、開中の電磁弁7a,7b,7cの内の略半分、例えば電磁弁7a,7bが閉に、閉中の電磁弁7d,7e,7fの内の略半分、例えば電磁弁7d,7eが開と(ステップS31)される。即ち、全電磁弁中電磁弁7a,7b,7fが閉と、電磁弁7c,7d,7eが開となり、ステップS26に戻る。
【0024】
次に、上記所定時間経過する(ステップS26)と、再び各室内機9a〜9fの配管温度が測定(ステップS27)され、配管温度が冷房温度であれば符号‘1’が、配管温度が冷房前温度のままか、冷房前温度に戻っていれば符号‘0’の信号がそれぞれの室内機に付与され、分流ユニットコントローラ14a、14bに送出(ステップS28)される。このようにして、電磁弁の開閉に応じた各室内機9a〜9fの配管温度の変化がそれぞれの分流ユニットコントローラ14a,14b中に順次記憶される。
【0025】
このようにして、2のm乗が電磁弁総数N=6以上、即ちmが3となるとステップS32に進み、各分流ユニットコントローラ14a,14bの対応関係検知手段22a,22bにより、各電磁弁の開閉状態と各室内機の配管温度の変化状態、即ち各室内機の付与2進数から、各電磁弁と室内機との対応関係が算出され、不揮発性メモリ14a6、14b6に記憶(ステップ32)され、全電磁弁7a〜7fが閉と(ステップS33)され試運転は終了する。
【0026】
以上の試運転が終了した段階では、各分流ユニットコントローラ14a,14bの不揮発性メモリ14a6,14b6中には、図4の表に示すような関係が記憶されている。即ち、各室内機9a〜9fには、配管温度変化に応じて図示のような各室内機毎に異った2進数が付与され、これが開閉順序によって特定された各電磁弁7a〜7fに対応している。従って、上述の従来の方法では電磁弁の開閉及び配管温度測定回数nが電磁弁総数N(この実施例では6)となるのに対しこの実施例での電磁弁の開閉及び配管温度測定回数mは、m≧log2Nを満足す(この実施例では3)ればよく、それだけ短時間で電磁弁と室内機との対応関係を検知することができる。
【0027】
実施例2.
実施例1では対応関係検知手段22a,22bによって検知された電磁弁と室内機との対応関係を、各分流ユニットコントローラ14a,14bの不揮発性メモリ14a6,14b6に記憶するものとしたが、この各室内機に対する検知結果を各室内機コントローラ15a〜15fの不揮発性メモリ15a4〜15f4に記憶させるようにしても実施例1と同等の効果を有する。
【0028】
上記実施例1では、冷房運転時の配管温度検出時に‘1’を、非運転時の配管温度検出時に‘0’を付与するものとしたが、暖房運転時の配管温度検出時に‘1’を、非運転時の配管温度検出時に‘0’を付与するものとしてもよく、また、配管温度の変化検出時に‘1’を、配管温度無変化検出時に‘0’を付与するものとしてもよい。
また、分流ユニット数を2とした場合を主とした説明したが、分流ユニット数は2以上であってもよく、場合によっては1であってもよいことは勿論である。
【0029】
【発明の効果】
この発明では、室外機を冷房または暖房状態で上記圧縮機を運転させるとともに、1または複数の分流ユニット及び各室内機を制御する分流ユニットコントローラ及び各室内機コントローラに試運転開始信号を送出し、上記全室内機内の全流量制御器を開にし、そして、上記分流ユニット内の開中の電磁弁の略半分を閉と、閉中の電磁弁の略半分を開とする動作を、所定時間間隔で順次行なう試運転制御手段と、上記電磁弁の開閉動作から所定時間経過毎に上記各室内機内の配管温度をそれぞれ測定する配管温度測定手段と、この手段によって測定された配管温度の変化状態に応じて、各室内機とこれに接続される電磁弁との対応関係を検知する対応関係検知手段とを備え、また、上記検知された電磁弁と室内機との対応関係が分流ユニットコントローラ或は室内機コントローラ中の不揮発性メモリに記憶させるようにしたので、従来のもの比べ遥かに短時間で、各室内機と各分流ユニット内の各電磁弁との対応関係が正確に認識でき、所望の室内機の冷暖房が確実に行える空気調和機を得られる効果がある。
【図面の簡単な説明】
【図1】 この発明の実施例1を示す構成図。
【図2】 実施例1の主要部の構成を示すブロック線図。
【図3】 実施例1の動作説明用のフローチャート。
【図4】 実施例1の電磁弁と室内機との対応関係の一例を示す表。
【図5】 従来の空気調和機を示す構成図。
【図6】 従来例の動作説明用のフローチャート。
【符号の説明】
1 室外機、2 圧縮機、3 室外機側熱交換器、6a,6b 分流ユニット、7a,7b,7c,7d,7e,7f 電磁弁、9a,9b,9c,9d,9e,9f 室内機、10a,10b,10c,10d,10e,10f 流量制御器、11a,11b,11c,11d,11e,11f 室内側熱交換器、 13 室外機コントローラ、14a、14b 分流ユニットコントローラ、14a6、14b6 不揮発性メモリ、15a,15b,15c,15d,15e,15f 室内機コントローラ、15a4,15b4,15c4,15d4,15e4,15f4 不揮発性メモリ、20は試運転制御手段、21a,21b,21c,21d,21e,21f 配管温度測定手段、22a,22b 対応関係検知手段。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioner in which a plurality of indoor units are connected to an outdoor unit, and in particular, air that can detect which electromagnetic valve in a shunt unit and which indoor unit are connected. It is about a harmony machine.
[0002]
[Prior art]
FIG. 5 is a block diagram showing a conventional air conditioner disclosed in, for example, Japanese Patent Laid-Open No. 5-141818, and FIG. 6 is a flowchart for explaining the operation thereof. 3 shows a state in which three indoor units are connected to one outdoor unit and all the three indoor units are in cooling operation. In the figure, 1 is an outdoor unit, 2 is a compressor, 3 is an outdoor unit side heat exchanger connected in series thereto, 4 is a high pressure side pipe, 5 is a low pressure side pipe, 6 is a diverting unit, 7a, 7b, 7c. Is an electromagnetic valve that is disposed in the flow dividing unit 6 and connected to each of the high-pressure side branch pipes 8a, 8b, and 8c branched from the high-pressure side pipe 4.
[0003]
9a, 9b, 9c are indoor units disposed in each room (not shown), 10a, 10b, 10c are disposed in each indoor unit 9a, 9b, 9c, and each high-pressure side branch pipe 8a, 8b, Each of the flow rate controllers 11a, 11b, 11c connected to 8c is connected to each flow rate controller 10a, 10b, 10c, and the other end of each low pressure side branch pipe 12a branches from the low pressure side pipe 5. , 12b, 12c are indoor side heat exchangers.
[0004]
13 is an outdoor unit controller, 14 is a shunt unit controller, 15a, 15b and 15c are indoor unit controllers, 16a, 16b and 16c are remote controllers, 17 is the outdoor unit controller 13, shunt unit controller 14, each indoor unit controller 15a, 15b, 15c and remote controller 16a, 16b, 16c are transmission signal lines for connecting transmissions and transmitting transmission signals.
[0005]
18 is installed in the outdoor unit controller 13 and sends a trial operation start signal to the diversion unit controller 14 and the indoor unit controllers 15a, 15b, and 15c at the start of the trial operation, and controls each flow rate in the indoor units 9a, 9b, and 9c. Test operation control means 19a, 19b, 19c for opening the devices 10a, 10b, 10c and opening the solenoid valves 7a, 7b, 7c in the flow dividing unit 6 one by one at predetermined time intervals In each indoor unit controller 15a, 15b, 15c, each solenoid valve 7a, 7b, 7c is opened and the pipe temperature in each indoor unit is measured every predetermined time, and the pipe temperature is set to the desired temperature. When it reaches, it is a pipe connection detection means for confirming and detecting that the indoor unit is connected to the electromagnetic valve that is open at that time.
[0006]
Next, the operation of the conventional air conditioner configured as described above will be described with reference to the flowchart of FIG. First, when the trial run is started, the trial run switch is turned on (step 1), and the trial run control means 18 operates the compressor 3 via the outdoor unit controller 13 (step S2), and each indoor unit controller 15a, 15b. , 15c, the flow rate controllers 10a, 10b, 10c are opened (step S3), and therefore, n is set to 1 (step S4) since it is the first, and the (n = 1) th through the diversion unit controller 14 The electromagnetic valve 7a is opened (step S5).
[0007]
Next, for example, when a predetermined time, which is the time required to start the air conditioning operation of each indoor unit 9a, 9b, 9c, has passed (step S6), each pipe connection detection means 19a, 19b, 19c is connected to each indoor unit 9a, The pipe temperatures 9b and 9c are measured (step S7). As a result of the measurement, the indoor unit in which the pipe temperature reaches the cooling temperature, in this case, the pipe connection detection means 19a in the indoor unit controller 15a for the indoor unit 9a is connected to the electromagnetic valve 7a and the indoor unit 9a. (Step S8) and outputs a signal to that effect to the trial run control means 18. Receiving this signal, the trial operation control means 18 closes the solenoid valve 7a (step S9), determines whether the number n has reached the total number N of solenoid valves (step S10), and has not reached the total number N. 1 is added (step S11), that is, n = 2 and the process returns to step S5.
[0008]
Thereafter, each solenoid valve is opened one by one in the order of the solenoid valves 7b and 7c, and the operation of the above steps S5 to S11 is repeated. When the number of repetitions n reaches the total number N of solenoid valves, in this case, the trial operation is finished. To do. In this way, since the correspondence between each electromagnetic valve 7a, 7b, 7c in the flow dividing unit 6 and each indoor unit 9a, 9b, 9c is detected, a malfunction such as a setting error in normal operation is prevented.
[0009]
[Problems to be solved by the invention]
Since the conventional air conditioner is configured as described above, when the number of indoor units connected to one diversion unit increases, or when a plurality of diversion units are connected to one outdoor unit, the solenoid valve The number of indoor units that should be detected is increased, and if the corresponding indoor unit is detected by opening the solenoid valves one by one as described above, it takes too much time to detect. There was a point.
[0010]
The present invention has been made to solve the above-described problems, and even when a large number of indoor units are connected to the shunt unit or a plurality of shunt units are connected, An object of the present invention is to obtain an air conditioner capable of accurately detecting a correspondence relationship with each solenoid valve of a unit in a short time and reliably cooling and heating a desired indoor unit.
[0011]
The air conditioner according to the present invention operates the compressor while the outdoor unit is in a cooling or heating state, and sends a test run start signal to the shunt unit controller and each indoor unit controller that controls the shunt unit and each indoor unit. The operation of opening all flow controllers in all indoor units, closing approximately half of the open solenoid valves in the flow dividing unit, and opening approximately half of the closed solenoid valves is the total number of solenoid valves. Where N is m, and the first natural number satisfying m> log 2 N is set to m, m times, trial operation control means sequentially performing at predetermined time intervals in a pattern different from each other , and opening / closing operation of the solenoid valve A pipe temperature measuring means for measuring the pipe temperature in each indoor unit every predetermined time from the start, and each indoor unit according to the change state of the pipe temperature measured by this means. Those having a relationship detection means for detecting a correspondence between the solenoid valve connected.
[0012]
Moreover, in the above, a plurality of diversion units are provided for one outdoor unit.
Further, in the above, the correspondence relationship between the solenoid valve detected by the pipe connection detecting means and the indoor unit is stored in a nonvolatile memory in the branch unit controller that controls the branch unit to which the indoor unit is connected. It has been made.
Furthermore, in the above, the correspondence relationship between the electromagnetic valve detected by the pipe connection detecting means and the indoor unit is stored in a nonvolatile memory in the indoor unit controller that controls the indoor unit.
[0013]
[Action]
In the present invention, the operation of closing approximately half of the open solenoid valve in one or more shunt units and opening approximately half of the closed solenoid valve is repeated a plurality of times, thereby being connected to these. The change in the piping temperature of the indoor unit is different for each indoor unit, and by detecting the change in the piping temperature, the correspondence between the solenoid valve and the indoor unit can be identified with a small number of repetitions. It is stored in a non-volatile memory in the shunt unit controller or in the indoor unit controller.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Example 1.
Embodiments of the present invention will be described below with reference to the drawings. 1 is a block diagram showing the configuration of the first embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of the main part of the first embodiment, FIG. 3 is a flowchart for explaining the operation thereof, and FIG. 4 is a solenoid valve and an indoor unit. It is a table | surface which shows an example of a corresponding relationship. Two shunt units are connected to one outdoor unit, three indoor units are connected to each shunt unit, and all six indoor units are in cooling operation.
[0015]
In the figure, 1 is an outdoor unit, 2 is a compressor, 3 is an outdoor unit side heat exchanger, 4 is a high-pressure side pipe between the outdoor unit and the diversion unit, 5 is a low-pressure side pipe, 6a and 6b are diversion units, 7a, 7b, 7c, 7d, 7e, 7f are solenoid valves, 8a, 8b, 8c, 8d, 8e, 8f are high-pressure side pipes between the flow dividing unit and the indoor unit, and 9a, 9b, 9c, 9d, 9e, 9f are indoor units. 10a, 10b, 10c, 10d, 10e, and 10f are flow controllers, 11a, 11b, 11c, 11d, 11e, and 11f are indoor heat exchangers, and 12a, 12b, 12c, 12d, 12e, and 12f are shunt units. This is a low-pressure side pipe between indoor units.
[0016]
Reference numeral 13 is an outdoor unit controller, 131 is a central processing unit for outdoor units (hereinafter referred to as an outdoor unit CPU), 132 is a transmission unit that performs multiplex transmission via the transmission signal line 17, and 133 is a read-only memory for written programs. (Hereinafter referred to as outdoor unit ROM), 134 is an electrically readable / writable memory (hereinafter referred to as outdoor unit RAM), 135 is an inverter unit that drives and controls the compressor 3, and 136 is operated during a trial run. This is a test run switch.
[0017]
14a and 14b are shunt unit controllers, 14a1 and 14b1 are shunt unit CPUs, 14a2 and 14b2 are transmission units, 14a3 and 14b3 are shunt unit ROMs, 14a4 and 14b4 are shunt unit RAMs, and 14a5 and 14b5 are solenoid valves 7a. , 7b, 7c, 7d, 7e, 7f are solenoid valve output circuits 14a6, 14b6 which are non-volatile memories for shunt units which can be written and read at any time and the stored contents are not erased by a power failure or the like.
[0018]
15a, 15b, 15c, 15d, 15e, and 15f are indoor unit controllers, 15a1 to 15d1 are CPUs for each indoor unit, 15a2 to 15d2 are transmission units, and 15a3 to 15d3 are flow controllers 10a to 10f. The flow rate controller output circuits 15a4 to 15d4 to output open / close signals are nonvolatile memories for each indoor unit. Reference numerals 16a, 16b, 16c, 16d, 16e, and 16f are remote controllers, and 17 is a transmission signal line.
[0019]
20 is installed in the outdoor unit controller 13 and sends a trial run start signal to the diversion unit controllers 14a and 14b and the indoor unit controllers 15a to 15f at the start of the trial run, and opens all flow controllers 10a to 10f in all the indoor units. In addition, the operation of closing approximately half of the open solenoid valves and opening approximately half of the open solenoid valves among all the solenoid valves 7a to 7f in the flow dividing units 6a and 6b is performed at predetermined time intervals. This is a trial operation control means sequentially performed by.
[0020]
21a, 21b, 21c, 21d, 21e, and 21f are installed in the indoor unit controllers 15a to 15f, and pipes in the indoor units 9a to 9f are passed every predetermined time from the opening and closing operations of approximately half of the solenoid valves. The pipe temperature measuring means 22a and 22b for measuring the temperature and transmitting the pipe temperature change data to the corresponding diversion unit controllers 14a and 14b are installed in the diversion unit controllers 14a and 14b. Correspondence data between each solenoid valve and the indoor unit is calculated from the pipe temperature change data from the pipe temperature measuring means 21a to 21f of 9a to 9f and the opening / closing pattern of each solenoid valve, and the respective nonvolatile memories 14a6 and 14b6 are calculated. It is a correspondence detection means to memorize | store.
[0021]
Next, the operation of the first embodiment will be described with reference to the flowchart of FIG. First, when the trial run is started, the trial run switch 136 is turned on (step 21), the trial run control means 20 operates the compressor 3 via the outdoor unit controller 13 (step S22), and each indoor unit controller 15a. Since each flow rate controller 10a to 10f is opened (step S23) through ˜15f, m is set to 1 because it is the first (step S24), and is closed via the flow dividing unit controllers 14a and 14b. Half of all the solenoid valves 7a to 7f, the solenoid valves 7a, 7b, and 7c are opened (step S25).
[0022]
Next, for example, when a predetermined time, which is a time required for starting the air conditioning operation of each indoor unit 9a to 9f, is passed (step S26), the pipe temperature of each indoor unit 9a to 9f is obtained by each pipe temperature measuring means 21a to 21f. Is measured (step S27), and if the pipe temperature has reached the cooling temperature, the signal “1” is separated, and if the pipe temperature has not changed, the signal “0” is divided as the code given to each indoor unit. The data is sent to the unit controllers 14a and 14b (step S28) and also sent to the outdoor unit controller 13.
[0023]
Upon receiving this signal, the trial operation control means 20 determines whether or not the m-th power of 2 has reached the total number N of solenoid valves (step S29). Since the total number N has not been reached, 1 is added to m (step S30). M = 2 and this time, approximately half of the open solenoid valves 7a, 7b, 7c, for example, the solenoid valves 7a, 7b are closed and the closed solenoid valve 7d is connected via the flow dividing unit controllers 14a, 14b. , 7e, 7f, for example, the solenoid valves 7d, 7e are opened (step S31). That is, when all the solenoid valves 7a, 7b, 7f are closed, the solenoid valves 7c, 7d, 7e are opened, and the process returns to step S26.
[0024]
Next, when the predetermined time elapses (step S26), the pipe temperature of each of the indoor units 9a to 9f is measured again (step S27). If the pipe temperature is the cooling temperature, the code “1” is indicated and the pipe temperature is the cooling temperature. If it remains at the previous temperature or has returned to the pre-cooling temperature, a signal of “0” is given to each indoor unit and sent to the diversion unit controllers 14a and 14b (step S28). In this way, changes in the piping temperature of the indoor units 9a to 9f according to the opening and closing of the electromagnetic valves are sequentially stored in the respective branch unit controllers 14a and 14b.
[0025]
In this way, when the m-th power of 2 is greater than or equal to the total number of solenoid valves N = 6, that is, m is 3, the process proceeds to step S32, and the correspondence detection means 22a and 22b of each branch unit controller 14a and 14b The correspondence between each solenoid valve and the indoor unit is calculated from the open / closed state and the change state of the piping temperature of each indoor unit, that is, the binary number assigned to each indoor unit, and stored in the non-volatile memories 14a6 and 14b6 (step 32). All the solenoid valves 7a to 7f are closed (step S33), and the trial operation is completed.
[0026]
At the stage where the above trial operation is completed, the relationships shown in the table of FIG. 4 are stored in the nonvolatile memories 14a6 and 14b6 of the respective diversion unit controllers 14a and 14b. That is, each indoor unit 9a to 9f is given a different binary number for each indoor unit as shown in the figure according to the change in piping temperature, and this corresponds to each electromagnetic valve 7a to 7f specified by the opening / closing sequence. doing. Therefore, in the above-described conventional method, the number n of opening / closing of the solenoid valve and the pipe temperature measurement is the total number of solenoid valves N (6 in this embodiment), whereas the number of times of opening / closing the solenoid valve and the pipe temperature measurement m in this embodiment is Satisfies m ≧ log 2 N (3 in this embodiment), and the correspondence between the solenoid valve and the indoor unit can be detected in such a short time.
[0027]
Example 2
In the first embodiment, the correspondence relationship between the solenoid valve and the indoor unit detected by the correspondence relationship detecting means 22a and 22b is stored in the nonvolatile memories 14a6 and 14b6 of the respective diversion unit controllers 14a and 14b. Even if the detection results for the indoor units are stored in the nonvolatile memories 15a4 to 15f4 of the indoor unit controllers 15a to 15f, the same effects as those of the first embodiment are obtained.
[0028]
In the first embodiment, “1” is given when the pipe temperature is detected during cooling operation, and “0” is given when the pipe temperature is detected during non-operation. However, “1” is set when the pipe temperature is detected during heating operation. Further, “0” may be given when the pipe temperature is detected during non-operation, “1” may be given when a change in the pipe temperature is detected, and “0” may be given when a change in the pipe temperature is not detected.
In addition, although the case where the number of diverting units is 2 is mainly described, the number of diverting units may be two or more, and of course, may be 1 in some cases.
[0029]
【The invention's effect】
In the present invention, the compressor is operated while the outdoor unit is in a cooling or heating state, and a test run start signal is sent to the shunt unit controller and each indoor unit controller for controlling one or a plurality of shunt units and each indoor unit, The operation of opening all flow controllers in all indoor units, closing approximately half of the open solenoid valves in the flow dividing unit, and opening approximately half of the closed solenoid valves is performed at predetermined time intervals. According to the trial operation control means to be performed sequentially, the pipe temperature measuring means for measuring the pipe temperature in each indoor unit at every predetermined time from the opening / closing operation of the solenoid valve, and the change in the pipe temperature measured by this means And a correspondence detecting means for detecting the correspondence between each indoor unit and the solenoid valve connected thereto, and the correspondence between the detected electromagnetic valve and the indoor unit is a shunt unit. Because it is stored in the non-volatile memory in the controller or indoor unit controller, the correspondence between each indoor unit and each solenoid valve in each branch unit can be accurately recognized in a much shorter time than the conventional one. There is an effect that an air conditioner capable of reliably cooling and heating a desired indoor unit can be obtained.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing Embodiment 1 of the present invention.
FIG. 2 is a block diagram illustrating a configuration of a main part of the first embodiment.
FIG. 3 is a flowchart for explaining the operation of the first embodiment.
FIG. 4 is a table showing an example of a correspondence relationship between the solenoid valve and the indoor unit according to the first embodiment.
FIG. 5 is a configuration diagram showing a conventional air conditioner.
FIG. 6 is a flowchart for explaining the operation of a conventional example.
[Explanation of symbols]
1 outdoor unit, 2 compressor, 3 outdoor unit side heat exchanger, 6a, 6b diversion unit, 7a, 7b, 7c, 7d, 7e, 7f solenoid valve, 9a, 9b, 9c, 9d, 9e, 9f indoor unit, 10a, 10b, 10c, 10d, 10e, 10f Flow rate controller, 11a, 11b, 11c, 11d, 11e, 11f Indoor heat exchanger, 13 Outdoor unit controller, 14a, 14b Shunt unit controller, 14a6, 14b6 Non-volatile memory 15a, 15b, 15c, 15d, 15e, 15f Indoor unit controller, 15a4, 15b4, 15c4, 15d4, 15e4, 15f4 Non-volatile memory, 20 is a test run control means, 21a, 21b, 21c, 21d, 21e, 21f Piping temperature Measuring means, 22a, 22b Correspondence relationship detecting means.

Claims (4)

室外機内の圧縮機で圧縮された冷媒を分流ユニット内の各電磁弁を介して複数の室内機へそれぞれ分流して導くようにした空気調和機において、
上記室外機を冷房または暖房状態で上記圧縮機を運転させるとともに、上記分流ユニット及び各室内機を制御する分流ユニットコントローラ及び各室内機コントローラに試運転開始信号を送出し、上記全室内機内の全流量制御器を開にし、そして、上記分流ユニット内の開中の電磁弁の略半分を閉と、閉中の電磁弁の略半分を開とする動作を、電磁弁総数をNとした場合、m>log Nを満足する最初の自然数をmとしてm回、すべての電磁弁について互いに異なるパターンで、所定時間間隔で順次行なう試運転制御手段と、
上記電磁弁の開閉動作から所定時間経過毎に上記各室内機内の配管温度をそれぞれ測定する配管温度測定手段と、
この手段によって測定された配管温度の変化状態に応じて、各室内機とこれに接続される電磁弁との対応関係を検知する対応関係検知手段とを備えたことを特徴とする空気調和機。
In the air conditioner adapted to divert and guide the refrigerant compressed by the compressor in the outdoor unit to each of the plurality of indoor units via each electromagnetic valve in the diversion unit,
The compressor is operated in a state where the outdoor unit is cooled or heated, and a test run start signal is sent to the diversion unit controller and each indoor unit controller for controlling the diversion unit and each indoor unit. When the controller is opened, and the operation of opening approximately half of the open solenoid valves in the flow dividing unit and closing approximately half of the closed solenoid valves is N is the total number of solenoid valves, trial operation control means for sequentially performing m times the first natural number satisfying m> log 2 N, m times, in a different pattern for all solenoid valves at predetermined time intervals;
A pipe temperature measuring means for measuring the pipe temperature in each indoor unit every predetermined time from the opening and closing operation of the solenoid valve;
An air conditioner comprising: correspondence detecting means for detecting a correspondence between each indoor unit and an electromagnetic valve connected to the indoor unit according to a change state of the pipe temperature measured by the means.
分流ユニットを1室外機に対し複数設けたことを特徴とする請求項1記載の空気調和機。  The air conditioner according to claim 1, wherein a plurality of diversion units are provided for one outdoor unit. 対応関係検知手段にて検知された電磁弁と室内機との対応関係を、この室内機が接続されている分流ユニットを制御する分流ユニットコントローラ中の不揮発メモリに記憶させたことを特徴とする請求項1または2記載の空気調和機。  The correspondence relationship between the electromagnetic valve and the indoor unit detected by the correspondence relationship detecting means is stored in a non-volatile memory in a flow dividing unit controller that controls the flow dividing unit to which the indoor unit is connected. Item 3. An air conditioner according to item 1 or 2. 配管接続検知手段にて検知された電磁弁と室内機との対応関係を、この室内機を制御する室内機コントローラ中の不揮発性メモリに記憶させたことを特徴とする請求項1または2記載の空気調和機。  The correspondence relationship between the solenoid valve and the indoor unit detected by the pipe connection detecting means is stored in a non-volatile memory in the indoor unit controller that controls the indoor unit. Air conditioner.
JP17089695A 1995-07-06 1995-07-06 Air conditioner Expired - Fee Related JP3670054B2 (en)

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