JPH03117846A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH03117846A JPH03117846A JP1254666A JP25466689A JPH03117846A JP H03117846 A JPH03117846 A JP H03117846A JP 1254666 A JP1254666 A JP 1254666A JP 25466689 A JP25466689 A JP 25466689A JP H03117846 A JPH03117846 A JP H03117846A
- Authority
- JP
- Japan
- Prior art keywords
- control unit
- compressor
- unit
- controller
- indoor
- 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
- 239000003507 refrigerant Substances 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 abstract description 17
- 238000010586 diagram Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 4
- 238000010257 thawing Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000034 method 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
この発明は、複数台の室内機と１台の室外ユニットとの
間に、冷媒を分配制御する分配制御ユニットを介在させ
た空気調和装置に関するものである。[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention provides a system in which a distribution control unit for distributing and controlling refrigerant is interposed between a plurality of indoor units and one outdoor unit. The present invention relates to an air conditioner.
（従来の技術）
第４図はこの種の従来の空気調和装置の概略構成を示す
ブロック図である。同図において、３台の室内機ＩＡ、
ＩＢ、ＩＣが分配制御ユニタットとしてのマルチコント
ローラ２を介して室外ユニットとしての１台の室外機３
に接続されている。(Prior Art) FIG. 4 is a block diagram showing a schematic configuration of a conventional air conditioner of this type. In the same figure, three indoor units IA,
IB and IC are connected to one outdoor unit 3 as an outdoor unit via a multi-controller 2 as a distribution control unit.
It is connected to the.
このうち、室内機ＩＡ、ＩＢ、ＩＣは制御部１１と室内
熱交換器１２とを含み、マルチコントローラ２は制御部
２１と、タイマ２２と、流量分配制御弁２３とを含み、
さらに、室外機３は制御部３１と、圧縮機３２と、四方
弁３４と、室外熱交換器３５とを含んでいる。Among these, the indoor units IA, IB, and IC include a control unit 11 and an indoor heat exchanger 12, and the multi-controller 2 includes a control unit 21, a timer 22, and a flow rate distribution control valve 23.
Furthermore, the outdoor unit 3 includes a control section 31 , a compressor 32 , a four-way valve 34 , and an outdoor heat exchanger 35 .
ここで、室内機ＩＡ、ＩＢ、ＩＣの各室内熱交換器１２
と、マルチコントローラ２の流量分配制御弁２３と、室
外機３の圧縮機３２、四方弁３４および室外熱交換器３
５とは周知の冷凍サイクルを形成し、室内機ＩＡ、ＩＢ
、ＩＣの制御部１１と、マルチコントローラ２の制御部
２１と、室外機３の制御部３１とは互いに信号の送受可
能に接続されている。Here, each indoor heat exchanger 12 of the indoor units IA, IB, and IC
, the flow rate distribution control valve 23 of the multi-controller 2, the compressor 32 of the outdoor unit 3, the four-way valve 34, and the outdoor heat exchanger 3
5 forms a well-known refrigeration cycle, and indoor units IA and IB
, the control section 11 of the IC, the control section 21 of the multi-controller 2, and the control section 31 of the outdoor unit 3 are connected to each other so that signals can be sent and received.
この第４図に例示した室内機ＩＡ、ＩＢ、ＩＣは、それ
ぞれ対応する容量を持つ室外機を接続すれば、３台の空
気調和装置として機能し得るものであり、また、室外機
３は、これに対応する容量を持つ室内機を接続すればや
はり１台の空気調和装置として機能
し得るものである。しかして、室内機ＩＡ、ＩＢ。The indoor units IA, IB, and IC illustrated in FIG. 4 can function as three air conditioners by connecting outdoor units with corresponding capacities, and the outdoor unit 3 can function as three air conditioners. If an indoor unit with a capacity corresponding to this is connected, it can function as a single air conditioner. However, indoor units IA and IB.
ＩＣの各制御部１１はそれぞれ室温の設定値と検出値と
の偏差に応じた小容量圧縮機の運転周波数を演算して、
周波数指令をマルチコントローラ２の制御部２１に伝送
する。また、マルチコントローラ２の制御部２１はこれ
らの圧縮機運転周波数に基づいて大容量圧縮機の運転周
波数を演算して室外機３の制御部３１に周波数指令を伝
送する。Each control unit 11 of the IC calculates the operating frequency of the small capacity compressor according to the deviation between the set value and the detected value of the room temperature.
The frequency command is transmitted to the control unit 21 of the multi-controller 2. Further, the control unit 21 of the multi-controller 2 calculates the operating frequency of the large capacity compressor based on these compressor operating frequencies, and transmits a frequency command to the control unit 31 of the outdoor unit 3.
室外機３の制御部３１はこの周波数指令に従って圧縮機
３２を駆動するようになっている。The control section 31 of the outdoor unit 3 drives the compressor 32 according to this frequency command.
ところで、この種の空気調和装置にあっては、室内機Ｉ
Ａ、ＩＢ、ＩＣと室外機３との配管距離がかなり長くな
るなることが多い。この状態で、例えば室内機ＩＡのみ
を運転したことにより、この室内機ＩＡの制御部１１か
ら室温の設定値と検出値との偏差に対応する圧縮機運転
周波数指令が伝えられたとすれば、マルチコントローラ
２の制御部２１は値の低い周波数指令を室外機３の制御
部３１に伝える。従って、圧縮機３２は低速運転される
ことになるが、これでは室内機ＩＡを設置した室内が容
易に暖まらないことがあり得る。By the way, in this type of air conditioner, the indoor unit I
The piping distance between A, IB, and IC and the outdoor unit 3 is often quite long. In this state, for example, if only the indoor unit IA is operated and a compressor operating frequency command corresponding to the deviation between the room temperature set value and the detected value is transmitted from the control unit 11 of this indoor unit IA, the The control unit 21 of the controller 2 transmits a frequency command with a low value to the control unit 31 of the outdoor unit 3. Therefore, the compressor 32 is operated at low speed, but this may not easily warm the room in which the indoor unit IA is installed.
そこで、この種の空気調和装置にあっては、マルチコン
トローラ２にタイマ２２を設け、暖房運転開始からの所
定時間、室内機ＩＡの制御部１１からの圧縮機運転周波
数を無視し、この圧縮機運転周波数に基づく周波数指令
よりも高い所定の周波数指令を室外機３の制御部３１に
伝えている。Therefore, in this type of air conditioner, a timer 22 is provided in the multi-controller 2, and the compressor operating frequency from the control unit 11 of the indoor unit IA is ignored for a predetermined period of time from the start of heating operation. A predetermined frequency command higher than the frequency command based on the operating frequency is transmitted to the control unit 31 of the outdoor unit 3.
これによって、室内機ＩＡのみが暖房運転された場合で
も、迅速に室温を上昇させることができる。Thereby, even if only the indoor unit IA is operated for heating, the room temperature can be quickly raised.
（発明が解決しようとする課題）
上述した空気調和装置にあっては、暖房運転開始から所
定の時間だけ、空調負荷に対応する通常の圧縮機運転周
波数よりも高い周波数で圧縮機３２を運転するので、暖
房運転する室内機が１台のみであっても室温を迅速に高
めることがきる。(Problem to be Solved by the Invention) In the air conditioner described above, the compressor 32 is operated at a frequency higher than the normal compressor operating frequency corresponding to the air conditioning load for a predetermined period of time from the start of heating operation. Therefore, even if only one indoor unit is in heating operation, the room temperature can be raised quickly.
これは、運転開始当初の冷媒の温度もあまり高くないこ
とを前提にして冷媒を余計に送りこむようにしたもので
ある。従って、冷媒の温度が一定値を超えた段階では、
空調負荷に基づく通常の演算ベースでの圧縮機運転周波
数で運転しても支障かないことになる。This is done on the premise that the temperature of the refrigerant at the beginning of operation is not very high, and extra refrigerant is fed. Therefore, when the temperature of the refrigerant exceeds a certain value,
This means that there will be no problem even if the compressor is operated at the compressor operating frequency based on the normal calculation based on the air conditioning load.
しかしながら、上記従来の空気調和装置においては、こ
の冷媒の温度とは関係なく、ある時間が経過するまで、
値の大きい圧縮機運転周波数で運転していたので、室内
機が要求する以上の熱量が供給され、この結果、室内温
度を設定するサーモスタットがオン、オフを繰返すハン
チングを起こしたり、あるいは、圧縮機３２の吐出側の
冷媒圧力が高くなり過ぎたりするという問題点があった
。However, in the conventional air conditioner described above, regardless of the temperature of this refrigerant, until a certain time elapses,
Because the compressor was operating at a high frequency, more heat was supplied than the indoor unit required, and as a result, the thermostat that set the indoor temperature could repeatedly turn on and off, or the compressor could There was a problem in that the refrigerant pressure on the discharge side of 32 became too high.
この発明は上記の問題点を解決するためになされたもの
で、室内温度を設定するサーモスタットのオン、オフの
繰返しに伴うハンチングや、圧縮機吐出側の圧力が過大
になることを未然に防止できる空気調和装置を得ること
を目的とする。This invention was made to solve the above problems, and can prevent hunting caused by repeated turning on and off of the thermostat that sets the indoor temperature, as well as excessive pressure on the discharge side of the compressor. The purpose is to obtain an air conditioner.
（課題を解決するための手段）
この発明は、複数台の室内機が冷媒を分配制御する分配
制御ユニットを介して１台の室外ユニットに接続される
と共に、前記室内機、分配制御ユニットおよび室外ユニ
ットがそれぞれ制御部を有し、前記室内機の制御部はそ
れぞれ室温の設定値と検出値との偏差に対応する信号を
出力し、前記分配制御ユニットの制御部はこれらの信号
に基づいて、前記室外ユニットの運転周波数を演算して
周波数指令を前記室外ユニットの制御部に伝送する空気
調和装置において、前記分配制御ユニットの制御部は、
暖房運転の起動からの時間が所定値以下で、かつ、圧縮
機吐出側の冷媒温度が所定値以下である期間のみ、前記
室内機の制御部の信号に基づく周波数指令よりも高い所
定の周波数指令を前記室外ユニットの制御部に伝送する
ことを特徴とするものである。(Means for Solving the Problems) This invention provides a method in which a plurality of indoor units are connected to one outdoor unit via a distribution control unit that distributes and controls refrigerant, and the indoor unit, the distribution control unit, and the outdoor Each unit has a control section, the control section of the indoor unit each outputs a signal corresponding to the deviation between the set value and the detected value of the room temperature, and the control section of the distribution control unit, based on these signals, In the air conditioner that calculates the operating frequency of the outdoor unit and transmits a frequency command to the control unit of the outdoor unit, the control unit of the distribution control unit:
A predetermined frequency command higher than the frequency command based on the signal from the control unit of the indoor unit is provided only during a period when the time from the start of heating operation is below a predetermined value and the refrigerant temperature on the discharge side of the compressor is below a predetermined value. is transmitted to a control section of the outdoor unit.
（作 用）
この発明においては、暖房運転の起動からの時間が所定
値以下で、かつ、圧縮機吐出側の冷媒温度が所定値以下
である期間のみ、室内機の制御部の信号に基づく周波数
指令よりも高い所定の周波数指令を室外ユニットの制御
部に伝送するようにしたため、冷媒の温度が所定値を超
えた時点で、高い周波数での運転が解除され、これによ
って、室内温度を設定するサーモスタットのオン、オフ
の繰返しに伴うハンチングや、圧縮機吐出側の圧力が過
大になることを未然に防止することができる。(Function) In this invention, the frequency based on the signal from the control section of the indoor unit is adjusted only during the period when the time from the start of heating operation is below a predetermined value and the refrigerant temperature on the discharge side of the compressor is below a predetermined value. Since a predetermined frequency command higher than the command is transmitted to the control section of the outdoor unit, operation at a high frequency is canceled when the temperature of the refrigerant exceeds a predetermined value, thereby setting the indoor temperature. Hunting caused by repeated turning on and off of the thermostat and excessive pressure on the discharge side of the compressor can be prevented.
（実施例）
第１図はこの発明の一実施例の概略構成図であり、図中
、第４図と同一の要素には同一の符号を付してその説明
を省略する。ここでは、マルチコントローラ２に、圧縮
機吐出側の冷媒温度を検出する温度センサ２４を設け、
タイマ２２の設定時間が経過する以前に、冷媒温度が所
定の値を過ぎたとき、暖房運転当初の圧縮機の高周波数
運転を解除する構成になっている。(Embodiment) FIG. 1 is a schematic configuration diagram of an embodiment of the present invention. In the figure, the same elements as in FIG. 4 are given the same reference numerals, and their explanations are omitted. Here, the multi-controller 2 is provided with a temperature sensor 24 that detects the refrigerant temperature on the discharge side of the compressor.
When the refrigerant temperature exceeds a predetermined value before the set time of the timer 22 has elapsed, the high frequency operation of the compressor at the beginning of the heating operation is canceled.
第２図はこの実施例に係る詳細な冷凍サイクル図である
。この第２図において、室内機ＩＡ。FIG. 2 is a detailed refrigeration cycle diagram according to this embodiment. In this FIG. 2, indoor unit IA.
ＩＢ、ＩＣの各室内熱交換器１２にはキャピラリチュー
ブ１３が直列に接続されている。マルチコントローラ２
は室内熱交換器１２に対応して設けられたガス量調整弁
２５、電子流量調整弁２６、逆止弁２７、膨張弁２８を
備える他、除霜用二方弁２９Ａおよび逆止弁２９Ｂを備
えている。室外機３は、圧縮機３２、アキュムレータ３
３、四方弁３４、室外熱交換器３５、膨張弁３６逆止弁
３７、ソリッドタンク３８を備えている。Capillary tubes 13 are connected in series to each of the IB and IC indoor heat exchangers 12. multi controller 2
In addition to being equipped with a gas amount adjustment valve 25, an electronic flow rate adjustment valve 26, a check valve 27, and an expansion valve 28 provided corresponding to the indoor heat exchanger 12, it also includes a two-way defrosting valve 29A and a check valve 29B. We are prepared. The outdoor unit 3 includes a compressor 32 and an accumulator 3.
3, a four-way valve 34, an outdoor heat exchanger 35, an expansion valve 36, a check valve 37, and a solid tank 38.
かかる構成により、暖房運転時には実線の矢印で示した
ように、圧縮機３２→四方弁３４−ガス量調整弁２５−
室内熱交換器１２−キャピラリチューブ１３−逆止弁２
７−電子流量調整弁２６−ソリッドタンク３８−膨張弁
３６−室外熱交換器３５→四方弁３４→アキュムレータ
３３→圧縮機３２の経路で冷媒が循環される。また、冷
房運転時には破線の矢印で示したように、圧縮機３２−
室外熱交換器３５→逆止弁３７→ソリツドタンク３８−
電子流量調整弁２６−膨張弁２８−キャピラリチューブ
１３−室内熱交換器１２−ガス量調整弁２５→アキユム
レータ３３→圧縮機３２の経路で冷媒が循環される。ま
た、暖房運転中における室外熱交換器３５に対する除霜
運転時には、−時的に四方弁３４を冷房側に切換えると
共に、除霜用二方弁２９Ａを開放して、この除霜用二方
弁２９Ａ１逆止弁２９Ｂの経路を通して冷媒を循環させ
る。With this configuration, during heating operation, as shown by the solid arrow, the compressor 32 -> four-way valve 34 - gas amount adjustment valve 25 -
Indoor heat exchanger 12 - capillary tube 13 - check valve 2
Refrigerant is circulated through the following path: 7 - electronic flow rate adjustment valve 26 - solid tank 38 - expansion valve 36 - outdoor heat exchanger 35 -> four-way valve 34 -> accumulator 33 -> compressor 32. Also, during cooling operation, the compressor 32-
Outdoor heat exchanger 35 → check valve 37 → solid tank 38-
The refrigerant is circulated along the path of electronic flow rate adjustment valve 26 - expansion valve 28 - capillary tube 13 - indoor heat exchanger 12 - gas amount adjustment valve 25 -> accumulator 33 -> compressor 32. In addition, during the defrosting operation for the outdoor heat exchanger 35 during the heating operation, the four-way valve 34 is temporarily switched to the cooling side, and the two-way defrosting valve 29A is opened. Refrigerant is circulated through the path of the 29A1 check valve 29B.
一方、マルチコントローラ２には、四方弁３４出側の冷
媒温度を検出する温度センサ２４が設けられ、その信号
が制御部２１に取込まれる。制御部２１は前述のタイマ
２２の信号と、この温度センサ２４の信号とに基づき、
暖房運転起動時の高周波数運転を行う。また、圧縮機３
２の吐出側に設けられた圧力スイッチ３９の信号は制御
部３１に取込まれ、圧縮機３２の吐出圧力が高くなり過
ぎたときに、圧縮機３２を停止させる。On the other hand, the multi-controller 2 is provided with a temperature sensor 24 that detects the refrigerant temperature on the outlet side of the four-way valve 34, and its signal is taken into the control section 21. Based on the signal from the timer 22 and the signal from the temperature sensor 24, the control unit 21
Performs high frequency operation when starting heating operation. Also, compressor 3
A signal from a pressure switch 39 provided on the discharge side of the compressor 2 is taken into the control unit 31, and when the discharge pressure of the compressor 32 becomes too high, the compressor 32 is stopped.
次に、制御部２１の詳細な動作を、第３図のフローチャ
ートに従って説明する。この空気調和装置の暖房運転を
開始した時、暖房運転休止の状態で３０Ｈｚ以上の圧縮
機運転周波数指令が入力された時、および、除霜終了時
に室外機３の制御部３１に対して、例えば９０Ｈｚに固
定された圧縮機運転周波数指令ＳＸを出力する（ステッ
プ１０１）。続いて、タイマ２２がタイムアツプ信号を
出力したか否かにより、所定時間例えば１４分が経過し
たか否かを判定する（ステップ１０２）。ここで、１４
分を経過していないとすれば、温度センサ２４の出力信
号に基づいて冷媒の温度が８０℃を超えたか否かを判定
しくステッブ１０３）、８０℃以下であれば９０Ｈｚに
固定された圧縮機運転周波数指令ＳＸを制御部３１に出
力し続ける。一方、暖房運転開始から１４分を経過した
後、あるいは、温度センサ２４による冷媒検出温度が８
０℃を超えた場合には、室内機ＩＡ、ＩＢ、ＩＣからそ
れぞれ送り込まれる周波数指令に基づいて演算した実際
の圧縮機運転周波数を制御部３１に送出する（ステップ
１０４）。Next, the detailed operation of the control section 21 will be explained according to the flowchart shown in FIG. For example, when the heating operation of this air conditioner is started, when a compressor operating frequency command of 30 Hz or more is input while the heating operation is stopped, and when defrosting is finished, the controller 31 of the outdoor unit 3 is A compressor operating frequency command SX fixed at 90 Hz is output (step 101). Next, it is determined whether a predetermined period of time, for example 14 minutes, has elapsed based on whether or not the timer 22 outputs a time-up signal (step 102). Here, 14
If the time has not passed, it is determined whether the refrigerant temperature exceeds 80°C based on the output signal of the temperature sensor 24 (step 103), and if it is below 80°C, the compressor is fixed at 90Hz. The operating frequency command SX continues to be output to the control unit 31. On the other hand, after 14 minutes have passed from the start of heating operation, or when the refrigerant temperature detected by the temperature sensor 24 is 8.
If the temperature exceeds 0° C., the actual compressor operating frequency calculated based on the frequency commands sent from the indoor units IA, IB, and IC is sent to the control unit 31 (step 104).
かくして、この実施例によれば、暖房運転の起動から１
４分経過しておらず、しかも、圧縮機３２の吐出側の冷
媒温度が８０℃以下である場合に限り、圧縮機３２が９
０Ｈｚの圧縮機運転周波数指令で運転され、これ以外の
状況では室内機ＩＡ。Thus, according to this embodiment, from the start of the heating operation, 1
Only when 4 minutes have not elapsed and the refrigerant temperature on the discharge side of the compressor 32 is 80°C or less, the compressor 32
The compressor is operated with a compressor operating frequency command of 0Hz, and in other situations, the indoor unit IA.
ＩＢ、ＩＣから送り込まれる周波数指令に基づいた圧縮
機運転周波数指令ＳＡ （ＳＡ≦９０Ｈｚ）によって圧
縮機３２が運転される。The compressor 32 is operated according to a compressor operating frequency command SA (SA≦90Hz) based on frequency commands sent from IB and IC.
なお、上記実施例では、マルチコントローラ３が室外機
３と別になった空気調和装置について説明したが、マル
チコントローラ２が分配制御ユニットとして、室外機３
が室外ユニットとして、これら二つのユニットを併せて
室外機とする空気調和装置にも本発明を適用し得ること
は明らかである。In the above embodiment, an air conditioner in which the multi-controller 3 is separate from the outdoor unit 3 has been described.
It is clear that the present invention can also be applied to an air conditioner in which the outdoor unit is an outdoor unit and these two units are combined into an outdoor unit.
なおまた、上記実施例では、暖房運転の開始直後に固定
周波数指令ＳＸで運転したが、その直前に、例えば５０
Ｈｚで６０秒間運転するようにしても、上述したと同様
な制御を行うことができる。Furthermore, in the above embodiment, the operation was performed using the fixed frequency command SX immediately after the start of the heating operation, but just before that, for example, the
Even if the device is operated at Hz for 60 seconds, the same control as described above can be performed.
以上の説明によって明らかなように、この発明によれば
、り配制御ユニットの制御部が、暖房運転の起動からの
時間が所定値以下で、かつ、圧縮機吐出側の冷媒温度が
所定値以下である期間のみ、室内機の制御部の信号に基
づく周波数指令よりも高い周波数指令を室外ユニットの
制御部に伝送するようにしたので、冷媒の温度が所定値
を超えた時点で高い周波数での運転が解除され、室内温
度を設定するサーモスタットのオン（オフの繰返しに伴
うハンチングや、圧縮機吐出側の圧力が過大になること
を未然に防ぐことができる。As is clear from the above description, according to the present invention, the control section of the distribution control unit is configured to control the control unit when the time from the start of heating operation is equal to or less than a predetermined value, and the refrigerant temperature on the discharge side of the compressor is equal to or less than a predetermined value. For only a certain period of time, a frequency command higher than the frequency command based on the signal from the indoor unit control part is transmitted to the outdoor unit control part, so when the temperature of the refrigerant exceeds a predetermined value, the high frequency command is transmitted to the outdoor unit control part. This prevents hunting caused by repeated turning on and off of the thermostat that sets the indoor temperature and excessive pressure on the discharge side of the compressor.
第１図はこの発明の一実施例の概略構成図、第２図は同
実施例の冷凍サイクル系統図、第３図は同実施例を構成
するマルチコントローラの制御部の詳細な動作を説明す
るためのフローチャート、第４図は従来の空気調和装置
の概略構成図である。
ＩＡ、ＩＢ、ＩＣ・・・室内機、２・・・マルチコント
ローラ、３・・・室外機、１１，２１．３１・・・制御
部、１２・・・室内熱交換器、２２・・・タイマ、２３
・・・流量分配制御弁、２４・・・温度センサ、３２・
・・圧縮機、３４・・・四方弁、３５・・・室外熱交換
器。
出願代理人
佐
藤
雄
第２図Fig. 1 is a schematic configuration diagram of an embodiment of the present invention, Fig. 2 is a refrigeration cycle system diagram of the embodiment, and Fig. 3 explains the detailed operation of the control section of the multi-controller constituting the embodiment. FIG. 4 is a schematic diagram of a conventional air conditioner. IA, IB, IC...Indoor unit, 2...Multi controller, 3...Outdoor unit, 11, 21.31...Control unit, 12...Indoor heat exchanger, 22...Timer , 23
...Flow rate distribution control valve, 24...Temperature sensor, 32.
... Compressor, 34... Four-way valve, 35... Outdoor heat exchanger. Application agent Yu Sato Figure 2
Claims (1)
を介して１台の室外ユニットに接続されると共に、前記
室内機、分配制御ユニットおよび室外ユニットがそれぞ
れ制御部を有し、前記室内機の制御部はそれぞれ室温の
設定値と検出値との偏差に対応する信号を出力し、前記
分配制御ユニットの制御部はこれらの信号に基づいて、
前記室外ユニットの運転周波数を演算して周波数指令を
前記室外ユニットの制御部に伝送する空気調和装置にお
いて、前記分配制御ユニットの制御部は、暖房運転の起
動からの時間が所定値以下で、かつ、圧縮機吐出側の冷
媒温度が所定値以下である期間のみ、前記室内機の制御
部の信号に基づく周波数指令よりも高い所定の周波数指
令を前記室外ユニットの制御部に伝送することを特徴と
する空気調和装置。A plurality of indoor units are connected to one outdoor unit via a distribution control unit that distributes and controls refrigerant, and each of the indoor unit, the distribution control unit, and the outdoor unit has a control section, and the indoor unit Each of the control units outputs a signal corresponding to the deviation between the set value and the detected value of the room temperature, and the control unit of the distribution control unit outputs a signal corresponding to the deviation between the set value and the detected value of the room temperature, and the control unit of the distribution control unit, based on these signals,
In the air conditioner that calculates the operating frequency of the outdoor unit and transmits a frequency command to the control unit of the outdoor unit, the control unit of the distribution control unit calculates the operating frequency of the outdoor unit, and the control unit of the distribution control unit calculates the operating frequency of the outdoor unit. , characterized in that a predetermined frequency command higher than a frequency command based on a signal from the control unit of the indoor unit is transmitted to the control unit of the outdoor unit only during a period when the refrigerant temperature on the discharge side of the compressor is below a predetermined value. air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1254666A JPH03117846A (en) | 1989-09-29 | 1989-09-29 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1254666A JPH03117846A (en) | 1989-09-29 | 1989-09-29 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03117846A true JPH03117846A (en) | 1991-05-20 |
Family
ID=17268179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1254666A Pending JPH03117846A (en) | 1989-09-29 | 1989-09-29 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03117846A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6114759A (en) * | 1998-04-23 | 2000-09-05 | Nec Corporation | Semiconductor package |
| EP1455142A1 (en) * | 2001-12-14 | 2004-09-08 | Mitsubishi Denki Kabushiki Kaisha | Air conditioner |
| US8610263B2 (en) | 2010-01-27 | 2013-12-17 | Mitsubishi Electric Corporation | Semiconductor device module |
| CN104564637A (en) * | 2014-12-29 | 2015-04-29 | 广东芬尼克兹节能设备有限公司 | Exhaust control method of frequency converter |
-
1989
- 1989-09-29 JP JP1254666A patent/JPH03117846A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6114759A (en) * | 1998-04-23 | 2000-09-05 | Nec Corporation | Semiconductor package |
| EP1455142A1 (en) * | 2001-12-14 | 2004-09-08 | Mitsubishi Denki Kabushiki Kaisha | Air conditioner |
| EP1455142A4 (en) * | 2001-12-14 | 2006-01-04 | Mitsubishi Electric Corp | Air conditioner |
| US8610263B2 (en) | 2010-01-27 | 2013-12-17 | Mitsubishi Electric Corporation | Semiconductor device module |
| CN104564637A (en) * | 2014-12-29 | 2015-04-29 | 广东芬尼克兹节能设备有限公司 | Exhaust control method of frequency converter |
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