JPH04124559A - Control device of air conditioner - Google Patents
Control device of air conditionerInfo
- Publication number
- JPH04124559A JPH04124559A JP2245605A JP24560590A JPH04124559A JP H04124559 A JPH04124559 A JP H04124559A JP 2245605 A JP2245605 A JP 2245605A JP 24560590 A JP24560590 A JP 24560590A JP H04124559 A JPH04124559 A JP H04124559A
- Authority
- JP
- Japan
- Prior art keywords
- differential pressure
- pressure
- inverter
- differential
- capacity
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 239000003507 refrigerant Substances 0.000 claims abstract description 12
- 230000001143 conditioned effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000287462 Phalacrocorax carbo Species 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、インバータによシ圧縮機を能力制御する空気
調和機の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 an air conditioner control device that controls the capacity of a compressor using an inverter.
従来の技術
近年、空気調和機においては、省電力及び快適性の向上
のためインバータによる圧縮機の能力制御が注目されて
いる（例えば、特開平２−７５８５９号公報）。BACKGROUND ART In recent years, in air conditioners, compressor capacity control using an inverter has been attracting attention in order to save power and improve comfort (for example, Japanese Patent Application Laid-Open No. 2-75859).
以下図面を参照しながら、従来の空気調和機の制御装置
の一例について説明する。An example of a conventional air conditioner control device will be described below with reference to the drawings.
第３図、第４図は、それぞれ従来の空気調和機の制御装
置のブロック図及び制御フローチャートを示すものであ
る。第３図において、１は冷媒の圧力を検知する圧力検
知器、２は圧力検知器１の検知するインバータとあらか
じめ設定された冷媒圧力を検出する差圧検出手段、３は
所定時間ごとに差圧検出手段２の検出差圧によりインバ
ータ４に能力信号を出力する能力制御手段である。FIG. 3 and FIG. 4 respectively show a block diagram and a control flowchart of a conventional air conditioner control device. In Fig. 3, 1 is a pressure detector that detects the refrigerant pressure, 2 is a differential pressure detection means that detects the inverter detected by the pressure detector 1 and a preset refrigerant pressure, and 3 is a differential pressure detector that detects the refrigerant pressure at predetermined intervals. This is a capacity control means that outputs a capacity signal to the inverter 4 based on the differential pressure detected by the detection means 2.
インバータ４は図示しない圧縮機を能力制御する。The inverter 4 controls the capacity of a compressor (not shown).
以上のように構成された空気調和機の制御装置について
、以下その動作について説明する。The operation of the air conditioner control device configured as described above will be described below.
まずステップ１で圧力検知器１によってインバータが検
知され、その検知圧力と運転状態によりあらかじめ設定
された冷媒圧力をステップ２で差圧検出手段２において
検出する。次にステップ３で所定時間経過後、ステップ
４に進み能力制御手段３において所定の時間ごとに差圧
検出手段２で検出した差圧によシ第１表のインノく一タ
能力変化量に従いステップ６で能力信号をインノζ−タ
４に出力する。この一連の動作を繰り返し行なう。First, in step 1, the inverter is detected by the pressure detector 1, and in step 2, the differential pressure detection means 2 detects the refrigerant pressure, which is preset based on the detected pressure and the operating state. Next, in step 3, after a predetermined period of time has elapsed, the process proceeds to step 4, and the capacity control means 3 performs a step according to the amount of change in the output capacity shown in Table 1 based on the differential pressure detected by the differential pressure detection means 2 at predetermined intervals. At step 6, the capability signal is output to the inverter 4. Repeat this series of actions.
う。cormorant.
以上のようにインバータが所定の設定圧力となるように
、所定時間ごとにインバータの能力を変化させる空気調
和機の制御装置である。As described above, this is a control device for an air conditioner that changes the capacity of the inverter at predetermined time intervals so that the inverter reaches a predetermined set pressure.
第１表 差圧−能力変化量対応表
発明が解決しようとする課題
しかしながら上記のような構成では、インバータと冷媒
圧力が同一であれば差圧の減少・増大にかかわυなくイ
ンバータの能力変化量は一定となシ、差圧が減少してい
る場合には能力変化量が大き過ぎ、増大している場合に
は能力変化量が小さ過ぎる、あるいは差圧が減少してい
る場合には能力変化量が小さ過ぎ、増大している場合に
は能力変化量が大き過ぎるために、インバータが設定圧
力に収束するのに時間がかかり、余分な電力を消費する
とともに被空調空間の温度変動が大きいという課題を有
していた。Table 1 Differential pressure - Capacity change correspondence table Problems to be solved by the invention However, in the above configuration, if the inverter and refrigerant pressures are the same, the inverter's capacity change will be the same regardless of the decrease or increase in the differential pressure. is constant; if the differential pressure is decreasing, the capacity change is too large; if it is increasing, the capacity change is too small; or if the differential pressure is decreasing, the capacity change is too large. If the amount is too small or increasing, the amount of change in capacity is too large, and it takes time for the inverter to converge to the set pressure, consuming excess power and causing large temperature fluctuations in the air conditioned space. I had an issue.
本発明は上記課題に鑑み、差圧の減少、増大に応じてイ
ンバータの能力変化量を変化させることにより、短時間
でインバータを設定圧力に収束させ、インバータが適正
でない不安定な状態の運転時間を短くする空気調和機の
制御装置を提供するものである。In view of the above problems, the present invention allows the inverter to converge to the set pressure in a short time by changing the amount of change in the inverter's capacity according to the decrease or increase in differential pressure. The present invention provides an air conditioner control device that shortens the time.
課題を解決するための手段
上記課題を解決するために本発明の空気調和機の制御装
置は、圧縮機を能力制御するインバータと、インバータ
を検知する圧力検知器と、前記圧力検知器の検知圧力と
冷媒圧力を検出する差圧検出手段と、この差圧を記憶す
る差圧記憶手段と、所定時間ごとに前記差圧検出手段が
検出する差圧と前記差圧記憶手段に記憶された差圧とに
よシ前記インバータに能力信号を出力し前記差圧検出手
段の検出差圧を前記差圧記憶手段に記憶させる能力制御
手段とを備えたものである。Means for Solving the Problems In order to solve the above problems, the air conditioner control device of the present invention includes an inverter that controls the capacity of a compressor, a pressure sensor that detects the inverter, and a pressure sensor that detects the pressure detected by the pressure sensor. differential pressure detection means for detecting refrigerant pressure; differential pressure storage means for storing this differential pressure; and differential pressure detected by the differential pressure detection means and the differential pressure stored in the differential pressure storage means at predetermined time intervals. The apparatus further comprises a capacity control means for outputting a capacity signal to the inverter and causing the differential pressure detected by the differential pressure detection means to be stored in the differential pressure storage means.
作 用
上記した構成によシ、本発明の空気調和機の制御装置で
は差圧検出手段にて検出する所定時間経過後の差圧と差
圧記憶手段に記憶した所定時間経過前の差圧とによシ能
力制御手段で差圧の減少。Effect With the above-described configuration, the air conditioner control device of the present invention can detect the differential pressure detected by the differential pressure detection means after a predetermined time has elapsed, and the differential pressure before the predetermined time stored in the differential pressure storage means. Reduction of differential pressure by capacity control means.
増大に応じてインバータの能力変化量を変化させ、イン
バータを短時間で設定圧力に収束させるとともに、イン
バータが適正でない不安定な状態の運転時間を短くする
こととなる。The amount of change in the inverter's capacity is changed in accordance with the increase, and the inverter converges to the set pressure in a short time, and the operating time in an unstable state where the inverter is not appropriate is shortened.
実施例
以下本発明の一実施例について、図面を参照しながら説
明する。EXAMPLE An example of the present invention will be described below with reference to the drawings.
第１図、第２図はそれぞれ本発明の一実施例における空
気調和機の制御装置のブロック図及び制御フローチャー
トを示すものである。第１図において、１１は冷媒の圧
力を検知する圧力検知器、１２は圧力検知器１１の検知
するインバータと冷媒圧力を検出する差圧検出手段、１
３は差圧検出手段１２で検出した差圧を記憶する差圧記
憶手段、１４は一定時間ごとに差圧検知手段１２が検出
する差圧と差圧記憶手段１３に記憶された差圧とにより
インバータ１６に能力信号を出力し差圧検出手段１２の
検出差圧を差圧記憶手段１３に記憶させる能力制御手段
である。FIG. 1 and FIG. 2 respectively show a block diagram and a control flowchart of a control device for an air conditioner according to an embodiment of the present invention. In FIG. 1, 11 is a pressure detector that detects the pressure of the refrigerant, 12 is a differential pressure detection means that detects the inverter and the refrigerant pressure that the pressure detector 11 detects, and 1
3 is a differential pressure storage means for storing the differential pressure detected by the differential pressure detecting means 12; 14 is a differential pressure storing means for storing the differential pressure detected by the differential pressure detecting means 12 and the differential pressure stored in the differential pressure storing means 13 at regular intervals; It is a capacity control means that outputs a capacity signal to the inverter 16 and causes the differential pressure detected by the differential pressure detection means 12 to be stored in the differential pressure storage means 13.
以上のように構成された空気調和機の制御装置について
、以下その動作について説明する。The operation of the air conditioner control device configured as above will be described below.
まずステップ１１で圧力検知器１１によってインバータ
（Ｐ）が検知され、ステップ１２でそのインバータ（Ｐ
）と運転状態によシあらかじめ設定された設定圧力（Ｐ
ａｔ）との差圧（Ｐｄｎ）を差圧検出手段１２において
検出する。次にステップ１３で所定時間経過するまでス
テップ１１．１２を繰り返す。First, in step 11, the pressure detector 11 detects the inverter (P), and in step 12, the inverter (P) is detected.
) and the preset pressure (P
at) is detected by the differential pressure detection means 12. Next, in step 13, steps 11 and 12 are repeated until a predetermined period of time has elapsed.
所定時間経過後ステップ１４で能力制御手段１４におい
て差圧検出手段１２で検出した差圧（Ｐｄｎ）と差圧記
憶手段１３に記憶された差圧（Ｐｄｏ）により差圧の減
少、増大に応じて第２表のインバータ能力変化量に従い
ステップ１６で能力信号をインバータ４に出力する。ス
テップ１６で差圧検出手段１２の検出差圧（Ｐｄｎ）を
差圧記憶手段１３に（Ｐｄｏ ）として記憶させる。こ
の一連の動作を繰シ返し行なう。After a predetermined period of time has elapsed, in step 14, the capacity control means 14 detects the differential pressure (Pdn) detected by the differential pressure detection means 12 and the differential pressure (Pdo) stored in the differential pressure storage means 13, depending on the decrease or increase in the differential pressure. In step 16, a capability signal is output to the inverter 4 according to the amount of change in inverter capability shown in Table 2. In step 16, the differential pressure (Pdn) detected by the differential pressure detection means 12 is stored in the differential pressure storage means 13 as (Pdo). Repeat this series of operations.
第２表 差圧−能力変化量 対応表
以上のように現在の差圧と一定時間過去の差圧とによυ
差圧の減少、増大に応じてインバータの能力変化量を変
化させることにより、短時間でインバータを設定圧力に
収束させる。Table 2 Differential pressure - Amount of change in capacity As shown in the table above, υ
By changing the amount of change in the inverter's capacity according to the decrease or increase in differential pressure, the inverter can converge to the set pressure in a short time.
発明の効果
上記した構成によシ、本発明の空気調和機の制御装置で
は所定時間経過後の差圧と所定時間経過前の差圧とによ
り差圧の減少、増大に応じてインバータの能力変化量を
変化させ、短時間でインバータを設定圧力に集束し、イ
ンバータが適正でない不安定な状態の運転時間を短くす
ることによシ、余分な電力の消費をなくし被空調空間の
温度変動が小さい空気調和機の能力制御が可能となる。Effects of the Invention According to the configuration described above, the air conditioner control device of the present invention changes the inverter capacity according to the decrease or increase in the differential pressure between the differential pressure after a predetermined time and the differential pressure before the predetermined time has elapsed. By changing the amount and converging the inverter to the set pressure in a short time, and shortening the operation time when the inverter is in an inappropriate and unstable state, excess power consumption is eliminated and temperature fluctuations in the air-conditioned space are small. It becomes possible to control the capacity of air conditioners.
第１図は本発明の一実施例における空気調和機の制御装
置のブロック図、第２図は本発明の一実施例における空
気調和機の制御装置のフローチャート、第３図は従来の
空気調和機の制御装置のブロック図、第４図は従来の空
気調和機の制御装置の制御フローチャートである。
１２・・・・・・差圧検出手段、
１４・・・・・・能力制御手段、
１１・・・・・・圧力検知器、
１３・・・−・・差圧記憶手段、
１６・・・・・・インバータ。FIG. 1 is a block diagram of a control device for an air conditioner according to an embodiment of the present invention, FIG. 2 is a flowchart of a control device for an air conditioner according to an embodiment of the present invention, and FIG. 3 is a diagram of a conventional air conditioner. FIG. 4 is a control flowchart of a conventional air conditioner control device. 12... Differential pressure detection means, 14... Capacity control means, 11... Pressure detector, 13... Differential pressure storage means, 16... ...Inverter.
Claims (1)
圧力検知器と、運転状態により設定圧力を設定し、かつ
前記圧力検知器の検知する冷媒圧力と設定圧力との差圧
を検出する差圧検出手段と、この差圧を記憶する差圧記
憶手段と、所定時間ごとに前記差圧検出手段が検出する
差圧と前記差圧記憶手段に記憶された差圧とにより前記
インバータに能力信号を出力し、かつ前記差圧検出手段
が検出した差圧を前記差圧記憶手段に記憶させる能力制
御手段とを有し、所定時間経過後の差圧と所定時間経過
前の差圧とによりインバータの能力を変化させるよう構
成したことを特徴とする空気調和機の制御装置。An inverter that controls the capacity of the compressor, a pressure detector that detects refrigerant pressure, and a differential pressure sensor that sets a set pressure depending on the operating state and detects the difference between the refrigerant pressure detected by the pressure detector and the set pressure. a differential pressure storage means for storing the differential pressure, and outputting a capability signal to the inverter based on the differential pressure detected by the differential pressure detection means and the differential pressure stored in the differential pressure storage means at predetermined time intervals; and capacity control means for storing the differential pressure detected by the differential pressure detection means in the differential pressure storage means, the inverter's capacity is determined based on the differential pressure after a predetermined time and the differential pressure before the predetermined time has elapsed. 1. A control device for an air conditioner, characterized in that it is configured to change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2245605A JPH04124559A (en) | 1990-09-13 | 1990-09-13 | Control device of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2245605A JPH04124559A (en) | 1990-09-13 | 1990-09-13 | Control device of air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04124559A true JPH04124559A (en) | 1992-04-24 |
Family
ID=17136203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2245605A Pending JPH04124559A (en) | 1990-09-13 | 1990-09-13 | Control device of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04124559A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042710A (en) * | 2009-10-23 | 2011-05-04 | 日立空调·家用电器株式会社 | Freezing device |
-
1990
- 1990-09-13 JP JP2245605A patent/JPH04124559A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042710A (en) * | 2009-10-23 | 2011-05-04 | 日立空调·家用电器株式会社 | Freezing device |
| JP2011089714A (en) * | 2009-10-23 | 2011-05-06 | Hitachi Appliances Inc | Refrigerating device |
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