JPH09243137A - Electronic expansion valve control device for air conditioner - Google Patents

Electronic expansion valve control device for air conditioner

Info

Publication number
JPH09243137A
JPH09243137A JP8050193A JP5019396A JPH09243137A JP H09243137 A JPH09243137 A JP H09243137A JP 8050193 A JP8050193 A JP 8050193A JP 5019396 A JP5019396 A JP 5019396A JP H09243137 A JPH09243137 A JP H09243137A
Authority
JP
Japan
Prior art keywords
opening
lev
air conditioner
expansion valve
band
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP8050193A
Other languages
Japanese (ja)
Other versions
JP3676481B2 (en
Inventor
Yoshihiko Yoshikawa
芳彦 吉川
Original Assignee
Mitsubishi Electric Corp
三菱電機株式会社
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 Mitsubishi Electric Corp, 三菱電機株式会社 filed Critical Mitsubishi Electric Corp
Priority to JP05019396A priority Critical patent/JP3676481B2/en
Publication of JPH09243137A publication Critical patent/JPH09243137A/en
Application granted granted Critical
Publication of JP3676481B2 publication Critical patent/JP3676481B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

PROBLEM TO BE SOLVED: To shorten an initial position setting time of an expansion valve by a method wherein a present degree of opening of an electronic expansion valve is stored and the number of initial position setting pulses for returning the expansion valve to its full-closed stale is set to such number of pulses having a predetermined pulse added to the stored degree of opening of the expansion valve by an initial position setting means. SOLUTION: A degree of opening of an electronic expansion valve 5 being driven at present is written into a memory means 97 for storing a degree of opening. This degree of opening is read out again by a reading means 96 when the initial position of the expansion valve 5 is determined, inputted to a position setting means 94 and then the number of pulses during position setting operation is calculated. After the initial position is determined by driving the expansion valve 5 toward its closing direction only by an amount corresponding to the number of pulses, a degree of opening of the expansion valve is controlled in such a way that a refrigerant circuit may become its most suitable state, a degree of opening at this time is written into and stored in the memory means 97 for storing the degree of opening at this time, a pulse of the previous degree of opening of the stopped expansion valve is read out when a subsequent operation is carried out, the number of position setting pulses is reduced more than that of the prior art to shorten the position setting time and then it is possible to restrict a surplus incrementation of the pulse.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【発明の属する技術分野】この発明は、空気調和機の電
子膨張弁制御装置(LEV)に関するものである。
TECHNICAL FIELD The present invention relates to an electronic expansion valve controller (LEV) for an air conditioner.
【0002】[0002]
【従来の技術】図13は従来の空気調和機の電子膨張弁
の制御装置のLEVの位置決め動作を示す図である。一
般に、LEVはステッピングモータで駆動され、空気調
和機の運転開始時には位置決めのため一旦全閉位置まで
締める制御が行われる。LEVの初期位置決め動作とし
ては、図13に示すようにLEVが全開位置にいても正
確な位置決めを行うようにするためには、最大開度をA
パルスとすると、最大開度AパルスにLEV駆動中のズ
レ分を考慮したαパルスを加えた開度、すなわち、A+
αパルス閉方向に駆動することにより全閉位置で位置決
めを行う。この位置決めを行う時の初期LEV開度が全
開の場合には、増し締め(LEVは全閉位置にあるが、
ステッピングモータが閉じる方向に動作する)は+α分
のみだが、図13に示すように初期LEV開度がBパル
スに場合には、A−B分のパルスが初期LEV開度が全
開の場合よりも余分に増し締めが行われることになる。
2. Description of the Related Art FIG. 13 is a diagram showing a LEV positioning operation of a conventional electronic expansion valve controller for an air conditioner. Generally, the LEV is driven by a stepping motor, and at the start of the operation of the air conditioner, the LEV is controlled to be temporarily closed to the fully closed position for positioning. As the initial positioning operation of the LEV, as shown in FIG. 13, in order to perform accurate positioning even when the LEV is at the fully open position, the maximum opening is set to A
If a pulse is used, the maximum opening A pulse plus an α pulse in consideration of the deviation during LEV driving, that is, A +
Positioning is performed at the fully closed position by driving in the α pulse closing direction. When the initial LEV opening at the time of this positioning is fully open, the additional tightening (LEV is at the fully closed position,
The stepping motor operates in the closing direction) only for + α, but when the initial LEV opening is B pulse as shown in FIG. 13, the pulse for AB is larger than when the initial LEV opening is fully open. Extra tightening will be performed.
【0003】[0003]
【発明が解決しようとする課題】従来の空気調和機の電
子膨張弁制御装置は以上のように構成されているので、
LEVの初期位置決めはLEVの全閉から全開までの全
パルス数に所定パルスαを加えたパルスにしなければな
らず、LEVの初期位置決めに長い時間が必要であり、
LEVの位置決め完了まで圧縮機の運転は開始できなた
め、ユーザが運転SWを入れてから圧縮機を運転するま
でに遅延時間が発生し、エアコンの立ち上がり特性が悪
化するといった問題点があった。
Since the conventional electronic expansion valve control device for an air conditioner is configured as described above,
The initial positioning of the LEV must be a pulse obtained by adding a predetermined pulse α to the total number of pulses from the full closing to the full opening of the LEV, and the initial positioning of the LEV requires a long time,
Since the operation of the compressor cannot be started until the positioning of the LEV is completed, there is a problem that a delay time occurs between the time when the user turns on the operation SW and the time when the compressor is operated, and the startup characteristic of the air conditioner deteriorates.
【0004】また、前回の停止LEV開度が低かった場
合などには、LEVの増し締め非常に多くなりLEVの
寿命が短くなり信頼性が低下するなどの問題点があっ
た。
In addition, when the last stop LEV opening is low, there is a problem that the LEV is re-tightened too much, the life of the LEV is shortened, and the reliability is lowered.
【0005】この発明は、上記のような課題を解消する
ためになされたもので、電子膨張弁の初期位置決め時間
を短縮できるとともに、電子膨張弁の増し締めを防止す
ることができる空気調和機の電子膨張弁制御装置を得る
ことを目的とする。
The present invention has been made in order to solve the above problems, and it is an air conditioner that can shorten the initial positioning time of the electronic expansion valve and prevent the electronic expansion valve from being retightened. An object is to obtain an electronic expansion valve control device.
【0006】[0006]
【課題を解決するための手段】請求項1の空気調和機の
電子膨張弁制御装置は、空気調和機の運転状態を検出す
る運転状態検出手段と、この運転状態検出手段の信号に
よりLEVの目標開度を算出する目標開度演算手段と、
目標開度に前記LEVを駆動する駆動手段とを有するス
プリット型空気調和機において、現在のLEVの開度を
記憶しておく開度記憶手段と、LEVの初期位置決めを
行う位置決め手段とを備え、空気調和機の運転開始時に
LEVを全閉状態に戻す初期位置決めパルス数を、開度
記憶手段に記憶されているLEV開度に所定パルスを加
算したパルス数にすることを特徴とする。
According to another aspect of the present invention, there is provided an electronic expansion valve control device for an air conditioner, which comprises an operating state detecting means for detecting an operating state of the air conditioner, and a signal of the operating state detecting means for a target of the LEV. Target opening calculation means for calculating the opening,
In a split type air conditioner having a drive means for driving the LEV to a target opening degree, the split type air conditioner is provided with an opening degree storage means for storing a current LEV opening degree, and a positioning means for performing an initial positioning of the LEV, It is characterized in that the initial positioning pulse number for returning the LEV to the fully closed state at the start of operation of the air conditioner is the pulse number obtained by adding a predetermined pulse to the LEV opening stored in the opening storage means.
【0007】請求項2の空気調和機の電子膨張弁制御装
置は、空気調和機の運転状態を検出する運転状態検出手
段と、この運転状態検出手段の信号によりLEVの目標
開度を算出する目標開度演算手段と、目標開度にLEV
を駆動する駆動手段とを有するスプリット型空気調和機
において、室外機への電源供給状態を検出する電源検出
手段と、LEVの開度を記憶しておく開度記憶手段と、
LEVの初期位置決めを行う位置決め手段とを備え、電
源がオフされた場合にそのときのLEV開度を開度記憶
手段に書き込み、電源が再度オンした場合に開度記憶手
段に記憶されているLEV開度を読み込み、LEV開度
に所定パルスを加算したパルス数を空気調和機の運転開
始時にLEVを全閉状態に戻す初期位置決めパルス数と
することを特徴とする。
According to another aspect of the present invention, there is provided an electronic expansion valve control device for an air conditioner, wherein an operating state detecting means for detecting an operating state of the air conditioner and a target for calculating a target opening degree of the LEV by a signal from the operating state detecting means. Opening calculation means and LEV for the target opening
In a split type air conditioner having a driving means for driving the power source, a power source detecting means for detecting a power supply state to the outdoor unit, and an opening degree storing means for storing the opening degree of the LEV,
Positioning means for performing initial positioning of the LEV is provided, the LEV opening at that time is written in the opening storage means when the power is turned off, and the LEV stored in the opening storage means when the power is turned on again. It is characterized in that the opening is read and the number of pulses obtained by adding a predetermined pulse to the LEV opening is used as the initial positioning pulse number for returning the LEV to the fully closed state at the start of operation of the air conditioner.
【0008】請求項3の空気調和機の電子膨張弁制御装
置は、空気調和機の運転状態を検出する運転状態検出手
段と、この運転状態検出手段の信号によりLEVの目標
開度を算出する目標開度演算手段と、目標開度にLEV
を駆動する駆動手段とを有するスプリット型空気調和機
において、LEVの開度を複数のバンド帯に区切り、現
在のLEVの開度がどのバンド帯に該当するか判断する
LEV開度範囲検出手段と、このLEV開度範囲検出手
段の検出したバンド帯を記憶するバンド帯記憶手段と、
LEVの初期位置決めを行う位置決め手段とを備え、空
気調和機の運転開始時にLEVを全閉状態に戻す初期位
置決めパルス数を、バンド帯記憶手段に記憶されている
LEV開度の該当バンド帯の上限パルス数に所定パルス
を加算したパルス数にすることを特徴とする。
According to another aspect of the present invention, there is provided an electronic expansion valve control device for an air conditioner, which comprises an operating condition detecting means for detecting an operating condition of the air conditioner and a target for calculating a target opening degree of the LEV based on a signal from the operating condition detecting means. Opening calculation means and LEV for the target opening
In a split type air conditioner having a driving means for driving the LEV, a LEV opening range detecting means for dividing the LEV opening into a plurality of band bands and determining to which band band the current LEV opening corresponds. Band band storage means for storing the band band detected by the LEV opening range detection means,
A positioning means for performing an initial positioning of the LEV, and the initial positioning pulse number for returning the LEV to the fully closed state at the start of the operation of the air conditioner, the upper limit of the corresponding band band of the LEV opening stored in the band storage means. It is characterized in that the number of pulses is the number of pulses plus a predetermined number of pulses.
【0009】[0009]
【発明の実施の形態】BEST MODE FOR CARRYING OUT THE INVENTION
実施の形態1.以下、この発明の実施の形態1を図につ
いて説明する。図1はこの発明の実施の形態1における
空気調和機の構成を示す構成図であり、図において、冷
媒を圧縮する圧縮機3と、冷房/暖房切り替えを行う四
方弁4と、室内機熱交換器1と、室外機熱交換器2と、
絞り機構のLEV5で冷媒回路を構成している。
Embodiment 1. Embodiment 1 of the present invention will be described below with reference to the drawings. 1 is a configuration diagram showing a configuration of an air conditioner according to Embodiment 1 of the present invention. In the figure, a compressor 3 that compresses a refrigerant, a four-way valve 4 that performs cooling / heating switching, and indoor unit heat exchange. Unit 1, outdoor unit heat exchanger 2,
The refrigerant circuit is constituted by LEV5 of the throttle mechanism.
【0010】また、商用電源6は室内機制御部7がリレ
ー8のON/OFF制御を行い、運転開始とともに室外
機制御部9へ供給される。
Further, the commercial power source 6 is supplied to the outdoor unit controller 9 when the indoor unit controller 7 controls ON / OFF of the relay 8 and the operation is started.
【0011】図2は、この発明の実施の形態2による空
気調和機の室外機制御部の詳細ブロック図である。図に
おいて、運転状態検出手段91により空気調和機の各種
温度等を検出し、目標開度演算手段92で前記運転状態
検出手段91の情報を元にLEV5の目標開度を演算す
る。その目標開度にLEV5を駆動する駆動手段93に
よりLEV5は駆動され冷媒回路全体を最適な状態に制
御している。開度書き込み手段95は、駆動手段93で
駆動している現在のLEV5の開度を読み込み、開度記
憶手段97に開度を書き込む。この開度記憶手段97に
書き込まれたLEV5の開度は、LEV5の初期位置決
め時に開度読み込み手段96により読み出され、位置決
め手段94に入力され、位置決め手段94ではこの情報
を元に位置決め動作時のパルス数を算出する。
FIG. 2 is a detailed block diagram of the outdoor unit controller of the air conditioner according to the second embodiment of the present invention. In the figure, the operating state detecting means 91 detects various temperatures of the air conditioner, and the target opening degree calculating means 92 calculates the target opening degree of the LEV 5 based on the information of the operating state detecting means 91. The LEV 5 is driven by the driving means 93 that drives the LEV 5 to the target opening degree, and the entire refrigerant circuit is controlled to the optimum state. The opening writing means 95 reads the current opening of the LEV 5 being driven by the driving means 93 and writes the opening in the opening storage means 97. The opening degree of the LEV5 written in the opening degree storage means 97 is read by the opening degree reading means 96 at the time of initial positioning of the LEV5 and input to the positioning means 94, and the positioning means 94 performs the positioning operation based on this information. Calculate the number of pulses of.
【0012】次に動作を説明する。図3は実施の形態1
の動作を説明する動作図、図4は同フローチャート図で
ある。運転を開始するときに、ステップ101で開度記
憶手段97に記憶されている前回の運転停止時の停止L
EV開度を読み込み、それを元にステップ102で位置
決め手段94で位置決めパルスを算出する。この位置決
めパルスは、 位置決めパルス=前回の停止LEV開度+α とする。このαパルスはLEV駆動中にLEV5のステ
ッピングモータの脱調等による駆動開度と実開度のズレ
分の最大値に相当する開度と設定する。また、初回運転
時には前回の停止LEV開度が不明のため、前回の停止
LEV開度は全開開度として処理を行うようにする。ス
テップ103ではステップ102で算出された位置決め
パルス数だけLEV5を閉方向に駆動しLEVの初期位
置決めを行い、LEVの初期位置決め終了後ステップ1
04に進む。ステップ104では、空気調和機の運転状
態を検出し、冷媒回路を最適な状態になるようにLEV
開度を制御する。ステップ105ではステップ104で
決定されたLEV開度を開度記憶手段97に書き込み記
憶させ、ステップ104に戻る。
Next, the operation will be described. FIG. 3 shows the first embodiment.
FIG. 4 is an operation diagram for explaining the operation of FIG. When the operation is started, the stop L at the time of the previous operation stop stored in the opening degree storage means 97 in step 101.
The EV opening is read, and the positioning pulse is calculated by the positioning means 94 in step 102 based on the EV opening. This positioning pulse is set to be positioning pulse = previous stop LEV opening + α. This α pulse is set to an opening corresponding to the maximum value of the difference between the actual opening and the driving opening due to step-out of the LEV5 stepping motor during LEV driving. Further, since the previous stopped LEV opening is unknown at the time of the first operation, the previous stopped LEV opening is processed as the fully opened opening. In step 103, the LEV 5 is driven in the closing direction by the number of positioning pulses calculated in step 102 to perform the initial positioning of the LEV, and after the initial positioning of the LEV is completed, step 1
Go to 04. In step 104, the operating state of the air conditioner is detected, and the LEV is set so that the refrigerant circuit is in the optimum state.
Control the opening. In step 105, the LEV opening determined in step 104 is written and stored in the opening storage means 97, and the process returns to step 104.
【0013】図3では、運転停止時の開度がBパルスの
場合の例を示しているが、運転停止時には運転停止時の
開度『Bパルス』が開度記憶手段97に記憶される。そ
して次回の運転時には前回の停止LEV開度の『Bパル
ス』が開度記憶手段97から読み出され、位置決めパル
スは、『B+αパルス』となり、従来と比較し位置決め
パルス数を少なくなり、その結果位置決め時間も短縮さ
れ余分な増し締めも行われなくなる。
FIG. 3 shows an example in which the opening when the operation is stopped is the B pulse, but the opening "B pulse" when the operation is stopped is stored in the opening storage means 97 when the operation is stopped. Then, at the time of the next operation, the "B pulse" of the previous stopped LEV opening is read from the opening storage means 97, the positioning pulse becomes "B + α pulse", and the number of positioning pulses becomes smaller than the conventional one, and as a result, Positioning time is also shortened and extra retightening is not performed.
【0014】実施の形態2.以下、この発明の実施の形
態2を図について説明する。図5はこの実施の形態2の
詳細ブロック図である。図2のブロック図に電源検出手
段98を追加したものである。電源検出手段98は、室
外制御部9への電源供給状態を検出し電源の供給が停止
した場合、開度書き込み手段95に信号を送り、開度書
き込み手段95では、現在のLEV開度を駆動手段93
より読み込み開度記憶手段97に書き込む。
Embodiment 2 FIG. Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a detailed block diagram of the second embodiment. The power supply detection means 98 is added to the block diagram of FIG. The power supply detection unit 98 detects the power supply state to the outdoor control unit 9 and when the power supply is stopped, sends a signal to the opening degree writing unit 95, and the opening degree writing unit 95 drives the current LEV opening degree. Means 93
The read opening storage means 97 is written.
【0015】次に動作を説明する。図6は実施の形態2
の動作を説明するフローチャート図である。実施の形態
1と異なる点のみ説明する。ステップ205では、室外
制御部9への電源供給状態を検出し、電源の供給があれ
ばステップ204に戻り通常のLEV制御を行う。ステ
ップ205で、室外制御部9への電源供給の停止を検出
した場合、ステップ206で現在のLEV開度を室外制
御部9の残留電荷が残っている内に開度記憶手段97に
書き込み記憶させる。
Next, the operation will be described. FIG. 6 shows the second embodiment.
6 is a flowchart illustrating the operation of FIG. Only points different from the first embodiment will be described. In step 205, the power supply state to the outdoor control unit 9 is detected, and if power is supplied, the process returns to step 204 to perform normal LEV control. When the stop of the power supply to the outdoor control unit 9 is detected in Step 205, the current LEV opening is written and stored in the opening storage unit 97 in Step 206 while the residual charge of the outdoor control unit 9 remains. .
【0016】この実施の形態によれば、室外制御部9へ
の電源の供給が停止した場合のみ現在のLEV開度を開
度記憶手段97に書き込み記憶させるので、書き込み回
数に制限のある不揮発性メモリでも使用できるという効
果を奏する。
According to this embodiment, the current LEV opening is written and stored in the opening storage means 97 only when the power supply to the outdoor control section 9 is stopped, so that the number of writing operations is limited to nonvolatile. The effect that it can also be used in memory is achieved.
【0017】実施の形態3.以下、この発明の実施の形
態3を図について説明する。図7はこの発明の実施の形
態3の詳細ブロック図である。図2のブロック図に開度
範囲検出手段99を追加したものである。図8は同動作
を説明する動作図である。開度範囲検出手段99は、現
在のLEV開度がどのバンド帯(図8のa〜jバンド
帯)に該当するか判断するLEV開度範囲検出手段であ
り、LEV開度範囲検出手段99のバンド帯を記憶して
おく開度書き込み手段95に信号を送り、開度書き込み
手段95では、現在のバンド帯を開度記憶手段97に書
き込む。
Embodiment 3 Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a detailed block diagram of Embodiment 3 of the present invention. The opening range detection means 99 is added to the block diagram of FIG. FIG. 8 is an operation diagram for explaining the same operation. The opening range detection means 99 is an LEV opening range detection means that determines which band band (a-j band band in FIG. 8) the current LEV opening corresponds to. A signal is sent to the opening writing unit 95 for storing the band band, and the opening writing unit 95 writes the current band band in the opening storage unit 97.
【0018】次に動作を説明する。図9は実施の形態3
の動作を説明するフローチャート図である。運転を開始
すると、ステップ301で開度記憶手段97に記憶され
ている前回の運転停止時の停止LEVバンドを読み込
み、それを元にステップ302で位置決め手段94で位
置決めパルスを算出する。この位置決めパルスは、 位置決めパルス=前回の停止LEVバンドの上限開度+
α とする。このαパルスはLEV駆動中にLEV5のステ
ッピングモータの脱調等による駆動開度と実開度のズレ
分の最大値に相当する開度と設定する。また、初回運転
時には前回の停止LEVバンドが不明のため、前回の停
止LEVバンドは全開のバンドとして処理を行うように
する。ステップ303ではステップ302で算出された
位置決めパルス数だけLEV5を閉方向に駆動しLEV
5の初期位置決めを行い、LEV5の初期位置決め終了
後ステップ304に進む。ステップ304では、空気調
和機の運転状態を検出し、冷媒回路を最適な状態になる
ようにしLEV開度を制御する。ステップ305では、
LEV5のバンド帯に変化があったを検出し、変化がな
ければステップ304に戻り通常のLEV制御を行う。
ステップ305で、LEV5のバンド帯に変化があった
場合、ステップ306で現在のLEVのバンド帯に開度
記憶手段97に書き込み記憶させる。
Next, the operation will be described. FIG. 9 shows the third embodiment.
6 is a flowchart illustrating the operation of FIG. When the operation is started, the stop LEV band at the time of the previous operation stop stored in the opening degree storage means 97 is read in step 301, and the positioning pulse is calculated by the positioning means 94 in step 302 based on the read LEV band. This positioning pulse is: positioning pulse = previous stop LEV band upper limit opening +
Let α. This α pulse is set to an opening corresponding to the maximum value of the difference between the actual opening and the driving opening due to step-out of the LEV5 stepping motor during LEV driving. Further, since the previous stopped LEV band is unknown at the time of the first operation, the previously stopped LEV band is processed as a fully open band. In step 303, LEV5 is driven in the closing direction by the number of positioning pulses calculated in step 302 to obtain LEV5.
5 is performed and after the initial positioning of LEV5 is completed, the process proceeds to step 304. In step 304, the operating state of the air conditioner is detected, the refrigerant circuit is brought into an optimum state, and the LEV opening is controlled. In step 305,
It is detected that there is a change in the LEV5 band band, and if there is no change, the process returns to step 304 and normal LEV control is performed.
If there is a change in the band band of LEV5 in step 305, in step 306 the opening degree storage means 97 is written and stored in the current band band of LEV.
【0019】図8では、運転停止時の開度がBパルスの
場合の例を示しているが、運転停止時には運転停止時の
開度のBパルスの該当バンド『f』が開度記憶手段97
に記憶され、そして次回の運転時には前回の停止LEV
バンドの『f』が読み出され、位置決めパルスは、『f
のバンドの上限値+αパルス』となり、従来と比較し位
置決めパルス数を少なくなり、その結果位置決め時間も
短縮され余分な増し締めも行われなくなる。また、運転
停止時の開度の該当バンドが前回と同一の場合は、開度
記憶手段97への書き込みを行なわないので、書き込み
回数が減少する。EEP−ROM等の書き込み回数に制
限がある不揮発性メモリでも開度記憶手段97に使用す
ることができる。
FIG. 8 shows an example in which the opening when the operation is stopped is the B pulse, but when the operation is stopped, the band “f” of the B pulse of the opening when the operation is stopped is the opening storage means 97.
Will be stored in, and the next time you run
The band "f" is read out and the positioning pulse is "f".
The upper limit of the band + α pulse ”, and the number of positioning pulses is smaller than in the conventional case, and as a result, the positioning time is shortened and extra tightening is not performed. If the band corresponding to the opening when the operation is stopped is the same as the previous band, the writing to the opening storage means 97 is not performed, and the number of writing is reduced. A non-volatile memory such as an EEP-ROM that has a limited number of times of writing can also be used as the opening degree storage means 97.
【0020】[0020]
【発明の効果】請求項1の空気調和機の電子膨張弁制御
装置は、空気調和機の運転状態を検出する運転状態検出
手段と、この運転状態検出手段の信号によりLEVの目
標開度を算出する目標開度演算手段と、目標開度に前記
LEVを駆動する駆動手段とを有するスプリット型空気
調和機において、現在のLEVの開度を記憶しておく開
度記憶手段と、LEVの初期位置決めを行う位置決め手
段とを備え、空気調和機の運転開始時にLEVを全閉状
態に戻す初期位置決めパルス数を、開度記憶手段に記憶
されているLEV開度に所定パルスを加算したパルス数
にするので、LEVの位置決め時間が短くなり、ユーザ
が運転スイッチを入れてから圧縮機が運転を開始するま
での遅延時間を最短にでき、空気調和機の立ち上がり特
性を改善できる。また、LEVの増し締めを極力抑える
ことによりLEVの長寿命化が可能となり、信頼性が高
いものが得られる。
According to the electronic expansion valve control device for an air conditioner of the present invention, the operation state detecting means for detecting the operating state of the air conditioner and the target opening degree of the LEV are calculated by the signal of the operating state detecting means. In a split type air conditioner having a target opening calculation means for controlling the LEV and a driving means for driving the LEV to the target opening, an opening storage means for storing a current opening degree of the LEV and an initial positioning of the LEV. And an initial positioning pulse number for returning the LEV to the fully closed state at the start of operation of the air conditioner is set to a pulse number obtained by adding a predetermined pulse to the LEV opening stored in the opening storage means. Therefore, the LEV positioning time is shortened, the delay time from the user turning on the operation switch to the start of operation of the compressor can be minimized, and the startup characteristics of the air conditioner can be improved. Further, by suppressing the retightening of the LEV as much as possible, it becomes possible to extend the life of the LEV and obtain a highly reliable one.
【0021】請求項2の空気調和機の電子膨張弁制御装
置は、空気調和機の運転状態を検出する運転状態検出手
段と、この運転状態検出手段の信号によりLEVの目標
開度を算出する目標開度演算手段と、目標開度にLEV
を駆動する駆動手段とを有するスプリット型空気調和機
において、室外機への電源供給状態を検出する電源検出
手段と、LEVの開度を記憶しておく開度記憶手段と、
LEVの初期位置決めを行う位置決め手段とを備え、電
源がオフされた場合にそのときのLEV開度を開度記憶
手段に書き込み、電源が再度オンした場合に開度記憶手
段に記憶されているLEV開度を読み込み、LEV開度
に所定パルスを加算したパルス数を空気調和機の運転開
始時にLEVを全閉状態に戻す初期位置決めパルス数と
するので、書き込み回数に制限のある不揮発性メモリで
も使用できるという効果を奏する。
According to another aspect of the present invention, there is provided an electronic expansion valve control device for an air conditioner, the operating state detecting means for detecting an operating state of the air conditioner, and a target for calculating a target opening degree of the LEV based on a signal from the operating state detecting means. Opening calculation means and LEV for the target opening
In a split type air conditioner having a driving means for driving the power source, a power source detecting means for detecting a power supply state to the outdoor unit, and an opening degree storing means for storing the opening degree of the LEV,
Positioning means for performing initial positioning of the LEV is provided, the LEV opening at that time is written in the opening storage means when the power is turned off, and the LEV stored in the opening storage means when the power is turned on again. The opening number is read, and the number of pulses obtained by adding a predetermined pulse to the LEV opening is used as the initial positioning pulse number that returns the LEV to the fully closed state at the start of operation of the air conditioner, so it can be used even in a nonvolatile memory with a limited number of writes. It has the effect of being able to.
【0022】請求項3の空気調和機の電子膨張弁制御装
置は、空気調和機の運転状態を検出する運転状態検出手
段と、この運転状態検出手段の信号によりLEVの目標
開度を算出する目標開度演算手段と、目標開度にLEV
を駆動する駆動手段とを有するスプリット型空気調和機
において、LEVの開度を複数のバンド帯に区切り、現
在のLEVの開度がどのバンド帯に該当するか判断する
LEV開度範囲検出手段と、このLEV開度範囲検出手
段の検出したバンド帯を記憶するバンド帯記憶手段と、
LEVの初期位置決めを行う位置決め手段とを備え、空
気調和機の運転開始時にLEVを全閉状態に戻す初期位
置決めパルス数を、バンド帯記憶手段に記憶されている
LEV開度の該当バンド帯の上限パルス数に所定パルス
を加算したパルス数にするので、書き込み回数に制限の
ある不揮発性メモリでも使用できるという効果を奏す
る。
An electronic expansion valve control device for an air conditioner according to a third aspect of the present invention includes an operating condition detecting means for detecting an operating condition of the air conditioner and a target for calculating a target opening degree of the LEV based on a signal from the operating condition detecting means. Opening calculation means and LEV for the target opening
In a split type air conditioner having a driving means for driving the LEV, a LEV opening range detecting means for dividing the LEV opening into a plurality of band bands and determining to which band band the current LEV opening corresponds. Band band storage means for storing the band band detected by the LEV opening range detection means,
A positioning means for performing an initial positioning of the LEV, and the initial positioning pulse number for returning the LEV to the fully closed state at the start of the operation of the air conditioner, the upper limit of the corresponding band band of the LEV opening stored in the band storage means. Since the number of pulses is the sum of the number of pulses and the predetermined number of pulses, it is possible to use even a nonvolatile memory with a limited number of writing operations.
【図面の簡単な説明】[Brief description of drawings]
【図1】 この発明の実施の形態1による空気調和機の
構成を示す構成図である。
FIG. 1 is a configuration diagram showing a configuration of an air conditioner according to a first embodiment of the present invention.
【図2】 この発明の実施の形態1による空気調和機の
電子膨張弁制御装置の詳細ブロック図である。
FIG. 2 is a detailed block diagram of an electronic expansion valve control device for an air-conditioning apparatus according to Embodiment 1 of the present invention.
【図3】 この発明の実施の形態1による空気調和機の
電子膨張弁制御装置の動作を説明する動作図である。
FIG. 3 is an operation diagram illustrating an operation of the electronic expansion valve control device for the air-conditioning apparatus according to Embodiment 1 of the present invention.
【図4】 この発明の実施の形態1による空気調和機の
電子膨張弁制御装置の動作を説明するフローチャート図
である。
FIG. 4 is a flowchart diagram illustrating an operation of the electronic expansion valve control device for the air-conditioning apparatus according to Embodiment 1 of the present invention.
【図5】 この発明の実施の形態2による空気調和機の
電子膨張弁制御装置の詳細ブロック図である。
FIG. 5 is a detailed block diagram of an electronic expansion valve control device for an air-conditioning apparatus according to Embodiment 2 of the present invention.
【図6】 この発明の実施の形態2による空気調和機の
電子膨張弁制御装置の動作を説明するフローチャート図
である。
FIG. 6 is a flow chart diagram illustrating an operation of the electronic expansion valve control device for the air-conditioning apparatus according to Embodiment 2 of the present invention.
【図7】 この発明の実施の形態3による空気調和機の
電子膨張弁制御装置の詳細ブロック図である。
FIG. 7 is a detailed block diagram of an electronic expansion valve control device for an air-conditioning apparatus according to Embodiment 3 of the present invention.
【図8】 この発明の実施の形態3による空気調和機の
電子膨張弁制御装置の動作を説明する動作図である。
FIG. 8 is an operation diagram illustrating an operation of the electronic expansion valve control device for the air-conditioning apparatus according to Embodiment 3 of the present invention.
【図9】 この発明の実施の形態3による空気調和機の
電子膨張弁制御装置の動作を説明するフローチャート図
である。
FIG. 9 is a flow chart diagram for explaining the operation of the electronic expansion valve control device for the air-conditioning apparatus according to Embodiment 3 of the present invention.
【図10】 従来の空気調和機の電子膨張弁制御装置の
動作を説明する動作図である。
FIG. 10 is an operation diagram illustrating an operation of a conventional electronic expansion valve control device for an air conditioner.
【符号の説明】[Explanation of symbols]
5 電子膨張弁(LEV)、6 商用電源、9 室外制
御部、91 運転状態検出手段、92 目標開度演算手
段、93 駆動手段、94 位置決め手段、95 開度
書き込み手段、96 開度読み込み手段、97 開度記
憶手段、98電源検出手段、99 開度範囲検出手段。
5 electronic expansion valve (LEV), 6 commercial power supply, 9 outdoor control section, 91 operating state detecting means, 92 target opening calculating means, 93 driving means, 94 positioning means, 95 opening writing means, 96 opening reading means, 97 opening degree storage means, 98 power source detection means, 99 opening degree range detection means.

Claims (3)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 空気調和機の運転状態を検出する運転状
    態検出手段と、この運転状態検出手段の信号により電子
    膨張弁(以下LEV)の目標開度を算出する目標開度演
    算手段と、前記目標開度に前記LEVを駆動する駆動手
    段とを有するスプリット型空気調和機において、現在の
    前記LEVの開度を記憶しておく開度記憶手段と、前記
    LEVの初期位置決めを行う位置決め手段とを備え、前
    記空気調和機の運転開始時に前記LEVを全閉状態に戻
    す初期位置決めパルス数を、前記開度記憶手段に記憶さ
    れている前記LEV開度に所定パルスを加算したパルス
    数にすることを特徴とする空気調和機の電子膨張弁制御
    装置。
    1. An operating state detecting means for detecting an operating state of an air conditioner, a target opening calculating means for calculating a target opening of an electronic expansion valve (hereinafter referred to as LEV) based on a signal from the operating state detecting means, In a split type air conditioner having drive means for driving the LEV to a target opening degree, an opening degree storage means for storing a current opening degree of the LEV and a positioning means for performing an initial positioning of the LEV are provided. The initial positioning pulse number for returning the LEV to the fully closed state at the start of operation of the air conditioner is set to the pulse number obtained by adding a predetermined pulse to the LEV opening stored in the opening storage means. Electronic expansion valve control device for air conditioners featuring.
  2. 【請求項2】 空気調和機の運転状態を検出する運転状
    態検出手段と、この運転状態検出手段の信号によりLE
    Vの目標開度を算出する目標開度演算手段と、前記目標
    開度に前記LEVを駆動する駆動手段とを有するスプリ
    ット型空気調和機において、室外機への電源供給状態を
    検出する電源検出手段と、前記LEVの開度を記憶して
    おく開度記憶手段と、前記LEVの初期位置決めを行う
    位置決め手段とを備え、前記電源がオフされた場合にそ
    のときの前記LEV開度を前記開度記憶手段に書き込
    み、前記電源が再度オンした場合に前記開度記憶手段に
    記憶されている前記LEV開度を読み込み、該LEV開
    度に所定パルスを加算したパルス数を前記空気調和機の
    運転開始時に前記LEVを全閉状態に戻す初期位置決め
    パルス数とすることを特徴とする空気調和機の電子膨張
    弁制御装置。
    2. The LE according to an operating condition detecting means for detecting an operating condition of the air conditioner and a signal from the operating condition detecting means.
    In a split type air conditioner having a target opening calculating means for calculating a target opening of V and a driving means for driving the LEV to the target opening, a power supply detecting means for detecting a power supply state to an outdoor unit. And an opening storage means for storing the opening of the LEV and a positioning means for performing an initial positioning of the LEV. When the power is turned off, the opening of the LEV at that time is set to the opening. When the power supply is turned on again, the LEV opening stored in the opening storage means is read in the storage means, and a pulse number obtained by adding a predetermined pulse to the LEV opening is started to operate the air conditioner. An electronic expansion valve control device for an air conditioner, wherein the LEV is set to an initial positioning pulse number for returning the LEV to a fully closed state.
  3. 【請求項3】 空気調和機の運転状態を検出する運転状
    態検出手段と、この運転状態検出手段の信号によりLE
    Vの目標開度を算出する目標開度演算手段と、前記目標
    開度に前記LEVを駆動する駆動手段とを有するスプリ
    ット型空気調和機において、前記LEVの開度を複数の
    バンド帯に区切り、現在の前記LEVの開度がどのバン
    ド帯に該当するか判断するLEV開度範囲検出手段と、
    このLEV開度範囲検出手段の検出した前記バンド帯を
    記憶するバンド帯記憶手段と、前記LEVの初期位置決
    めを行う位置決め手段とを備え、前記空気調和機の運転
    開始時に前記LEVを全閉状態に戻す初期位置決めパル
    ス数を、前記バンド帯記憶手段に記憶されている前記L
    EV開度の該当バンド帯の上限パルス数に所定パルスを
    加算したパルス数にすることを特徴とする空気調和機の
    電子膨張弁制御装置。
    3. An operating state detecting means for detecting an operating state of the air conditioner, and an LE based on a signal from the operating state detecting means.
    In a split type air conditioner having a target opening calculation means for calculating a V target opening and a drive means for driving the LEV to the target opening, the LEV opening is divided into a plurality of band bands, LEV opening range detection means for determining which band band the current LEV opening corresponds to,
    The LEV opening range detection unit includes a band band storage unit that stores the band band and a positioning unit that performs initial positioning of the LEV, and when the operation of the air conditioner is started, the LEV is fully closed. The number of initial positioning pulses to be returned is stored in the band storage means as L.
    An electronic expansion valve control device for an air conditioner, wherein the number of pulses is a number obtained by adding a predetermined pulse to the upper limit number of pulses of a band band of the EV opening.
JP05019396A 1996-03-07 1996-03-07 Electronic expansion valve controller for air conditioner Expired - Lifetime JP3676481B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05019396A JP3676481B2 (en) 1996-03-07 1996-03-07 Electronic expansion valve controller for air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05019396A JP3676481B2 (en) 1996-03-07 1996-03-07 Electronic expansion valve controller for air conditioner

Publications (2)

Publication Number Publication Date
JPH09243137A true JPH09243137A (en) 1997-09-16
JP3676481B2 JP3676481B2 (en) 2005-07-27

Family

ID=12852327

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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