JPH06288599A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH06288599A JPH06288599A JP5077830A JP7783093A JPH06288599A JP H06288599 A JPH06288599 A JP H06288599A JP 5077830 A JP5077830 A JP 5077830A JP 7783093 A JP7783093 A JP 7783093A JP H06288599 A JPH06288599 A JP H06288599A
- Authority
- JP
- Japan
- Prior art keywords
- energization
- predetermined value
- heat exchanger
- heater
- heating
- 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.)
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Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は空気調和機に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner.
【０００２】[0002]
【従来の技術】近年、空気調和機は室外側ユニット、室
内側ユニットともにますます小型化が要求されている。
そのため、室内側ユニットにおいて暖房用補助ヒータを
室内側熱交換器に内蔵したものや、室内側熱交換器の風
上側に配したものがある。2. Description of the Related Art In recent years, air conditioners have been required to be smaller and smaller both in outdoor units and indoor units.
For this reason, in the indoor unit, there are those in which an auxiliary heater for heating is built in the indoor heat exchanger, and those in which the auxiliary heater for heating is arranged on the windward side of the indoor heat exchanger.
【０００３】一方、一般に空気調和機にあっては、吐出
圧力の異常上昇に対して圧縮機の安全保護を図るために
吐出圧力に応動する圧力スイッチを設け、吐出圧力が所
定値以上になると圧縮機の運転を停止するようにしてい
る。On the other hand, in general, an air conditioner is provided with a pressure switch that responds to the discharge pressure in order to protect the compressor against abnormal increase in the discharge pressure, and compresses when the discharge pressure exceeds a predetermined value. The operation of the machine is stopped.
【０００４】しかしながら、暖房運転時、凝縮器として
作用する室内側熱交換器に内蔵された補助ヒータや、室
内側熱交換器の風上側に配した補助ヒータは、直接、あ
るいは間接に室内側熱交換器を加熱して凝縮圧力を高
め、ひいては圧縮機の吐出圧力を高めるため、前記圧力
スイッチが頻繁に作動してそのつど運転が停止してしま
うという問題があった。However, during the heating operation, the auxiliary heater built in the indoor heat exchanger acting as a condenser and the auxiliary heater arranged on the windward side of the indoor heat exchanger directly or indirectly heat the indoor heat. Since the exchanger is heated to increase the condensing pressure and thus increase the discharge pressure of the compressor, there is a problem that the pressure switch frequently operates and the operation is stopped each time.
【０００５】そこで、実開平１−６３９４７号公報に示
めされるごとく、凝縮器となる室内側熱交換器にサーミ
スタなどの温度センサを取り付け、凝縮温度を検知して
圧力スイッチが作動する前に補助ヒータへの通電を停止
し、凝縮圧力、すなわち吐出圧力の異常上昇を抑え、圧
力スイッチの頻繁な作動を防ぐようにしたものが考案さ
れている。Therefore, as disclosed in Japanese Utility Model Laid-Open No. 1-63947, a temperature sensor such as a thermistor is attached to an indoor heat exchanger that serves as a condenser, and before the pressure switch operates by detecting the condensation temperature. It has been devised that the energization of the auxiliary heater is stopped to suppress the abnormal increase of the condensation pressure, that is, the discharge pressure, and prevent the frequent operation of the pressure switch.
【０００６】以下に従来の空気調和機の一例について説
明する。図３は従来の空気調和機の概略構成図である。
図３において、１は圧縮機、２は四方弁、３は室内側熱
交換器、４は減圧手段、５は室外側熱交換器であり、こ
れらを環状に連接して冷凍回路を構成している。暖房運
転時は実線矢印Ａの方向に冷媒が流れ、冷房運転時は四
方弁２が切り換わることで破線矢印Ｂの方向に冷媒が流
れる。An example of a conventional air conditioner will be described below. FIG. 3 is a schematic configuration diagram of a conventional air conditioner.
In FIG. 3, 1 is a compressor, 2 is a four-way valve, 3 is an indoor heat exchanger, 4 is a pressure reducing means, 5 is an outdoor heat exchanger, and these are connected in a ring to form a refrigeration circuit. There is. During the heating operation, the refrigerant flows in the direction of the solid arrow A, and during the cooling operation, the four-way valve 2 is switched so that the refrigerant flows in the direction of the broken arrow B.
【０００７】６は室内側熱交換器３により加熱された空
気を吹出し口から室内に送風する室内側送風機であり、
通常複数回転数で運転される。７は室内側熱交換器３の
熱交換空気風上側に設けられた暖房用補助ヒータであ
る。図中矢印Ｃは室内側熱交換器３を流れる空気の方向
を示す。８は室内側熱交換器３の温度を検出する温度検
出手段、９は温度検出手段８の検出温度によって、暖房
用補助ヒータ７への通電を停止させるヒータ通電制御手
段である。Reference numeral 6 denotes an indoor blower for blowing the air heated by the indoor heat exchanger 3 into the room from the outlet.
It is usually operated at multiple rotation speeds. Reference numeral 7 denotes an auxiliary heating heater provided on the windward side of the heat exchange air of the indoor heat exchanger 3. The arrow C in the figure indicates the direction of air flowing through the indoor heat exchanger 3. Reference numeral 8 is a temperature detecting means for detecting the temperature of the indoor heat exchanger 3, and 9 is heater energization control means for stopping the energization of the auxiliary heating heater 7 according to the temperature detected by the temperature detecting means 8.
【０００８】以上のように構成された空気調和機につい
て、その動作を説明する。図３において、暖房運転時、
圧縮機１から吐出された高温高圧のガス冷媒は、四方弁
２を通り室内側熱交換器３へ行き、室内側送風機６によ
って室内側から吸い込まれた空気によって冷却され凝縮
し、反対に空気を暖めて室内を暖房する。室内側送風機
６の運転回転数は、図示しない制御手段によって、例え
ば室内設定温度と室内温度との差に応じて切り換えられ
たり、使用者がリモコン（図示しない）によって選択し
たりすることで所定の風量を出すように制御される。The operation of the air conditioner configured as above will be described. In FIG. 3, during heating operation,
The high-temperature and high-pressure gas refrigerant discharged from the compressor 1 goes through the four-way valve 2 to the indoor heat exchanger 3 and is cooled and condensed by the air sucked from the indoor side by the indoor blower 6 to conversely Warm up and heat the room. The operating speed of the indoor blower 6 is switched by a control means (not shown), for example, according to a difference between the indoor set temperature and the room temperature, or is selected by a user using a remote controller (not shown). It is controlled to output air volume.
【０００９】また、暖房用補助ヒータ７は寒さが厳しい
時や暖房運転開始初期の暖房能力不足を補うために設置
されるが、その通電制御は図示しない制御手段によっ
て、例えば室内設定温度と室内温度とに応じて行なわれ
ている。The auxiliary heater 7 for heating is installed in order to compensate for insufficient heating capacity when the cold is severe or at the beginning of heating operation. The energization control is performed by a control means (not shown), for example, the set room temperature and the room temperature. It is being done according to.
【００１０】暖房用補助ヒータ７に通電されると、室内
側熱交換器３へ供給される空気が暖房用補助ヒータ７に
よって加熱されるので室内温度よりも数度高い空気が室
内側熱交換器３へ供給され、室内側熱交換器３内部の冷
媒凝縮圧力が上昇する。When the auxiliary heater 7 for heating is energized, the air supplied to the indoor heat exchanger 3 is heated by the auxiliary heater 7 for heating, so that the air having a temperature several degrees higher than the room temperature is the indoor heat exchanger. 3, the refrigerant condensing pressure inside the indoor heat exchanger 3 rises.
【００１１】この結果、春、秋等の中間期などには凝縮
圧力が高くなりすぎるので、温度検出手段８が検出した
室内側熱交換器３の温度が所定値よりも高くなると、ヒ
ータ通電制御手段９は、暖房用補助ヒータ７への通電を
停止させる。As a result, the condensing pressure becomes too high in the middle of spring, autumn and the like. Therefore, when the temperature of the indoor heat exchanger 3 detected by the temperature detecting means 8 becomes higher than a predetermined value, the heater energization control is performed. The means 9 stops the energization of the heating auxiliary heater 7.
【００１２】また、暖房用補助ヒータ７への通電制限の
解除は、温度検出手段８が検出する室内側熱交換器３の
温度が所定値よりも低くなることで行う。また、解除所
定値は、制限開始所定値よりも低い温度とし、制御の頻
繁な繰り返しを防ぐようにしている。The restriction of energization to the heating auxiliary heater 7 is released when the temperature of the indoor heat exchanger 3 detected by the temperature detecting means 8 becomes lower than a predetermined value. Further, the release predetermined value is set to a temperature lower than the limit start predetermined value to prevent frequent repetition of control.
【００１３】[0013]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、本来、暖房用補助ヒータ７への通電が冷凍
サイクル内の凝縮圧力を上昇させる程度は室内送風機６
の風量選択が「強」のときは小さく、「弱」のときは大
きい（例えば２ｋｇ／ｃｍ2、４ｋｇ／ｃｍ2）にも関わ
らず、通電制限を解除する温度設定値をあらかじめ決め
ているため、制御の頻繁な繰り返しを防ぐことに意を注
いだ結果、解除設定値の決め方が低すぎた場合、たまた
ま室内送風機６が「弱」運転されているときに保護動作
により暖房用補助ヒータ７への通電制限がなされた後、
使用者が寒いと感じリモコンの風量選択を「強」とした
ときに、暖房能力を必要としているにも関わらず、定め
られた設定値まで室内側熱交換器３の温度が下がるまで
通電制限は解除されず、本来の空気調和の効果が得られ
ない。However, in the above-mentioned conventional structure, the indoor blower 6 should have such a degree that the energization of the auxiliary heating heater 7 raises the condensation pressure in the refrigeration cycle.
Even though the air flow rate selection is small when it is “strong” and large when it is “weak” (for example, 2 kg / cm 2 , 4 kg / cm 2 ), the temperature setting value for releasing the energization restriction is determined in advance. As a result of paying attention to prevent frequent repetition of control, if the release setting value is determined too low, it happens that the auxiliary heater 7 for heating is protected by the protective operation when the indoor blower 6 is operating "weakly". After the energization of
When the user feels cold and the air volume selection of the remote control is set to "strong", although the heating capacity is required, the energization restriction is not applied until the temperature of the indoor heat exchanger 3 falls to the set value. It is not canceled and the original air conditioning effect cannot be obtained.
【００１４】また、解除設定値の決め方が高すぎた場合
には、暖房用補助ヒータ７への通電制限とその解除を頻
繁に繰り返して、冷凍サイクルの高低圧力を急激に変化
させ、安定した運転が得られないという現象が発生し、
特に高圧シェルタイプの圧縮機を使用している場合に
は、冷凍サイクル内の高低圧力の急激な変化は圧縮機シ
ェル内の冷凍機油の発泡現象を引き起こし、圧縮機から
吐出される冷凍機油の量を増加させ、圧縮機の信頼性を
損なうという欠点があった。If the release setting value is determined too high, the energization of the auxiliary heater 7 for heating and the release thereof are frequently repeated to rapidly change the high and low pressures of the refrigeration cycle to ensure stable operation. The phenomenon that the
Especially when using a high-pressure shell type compressor, a sudden change in the high and low pressures in the refrigeration cycle causes a bubbling phenomenon of the refrigeration oil in the compressor shell, and the amount of refrigeration oil discharged from the compressor. , Which impairs the reliability of the compressor.
【００１５】本発明は上記従来の課題を解決するもの
で、暖房用補助ヒータによる吐出圧力の異常上昇を抑え
るとともに、運転状況に応じて有効な暖房運転を行うこ
とができる空気調和機を提供することを目的とする。The present invention solves the above-mentioned conventional problems, and provides an air conditioner capable of suppressing an abnormal rise in the discharge pressure by an auxiliary heater for heating and performing an effective heating operation depending on the operating condition. The purpose is to
【００１６】[0016]
【課題を解決するための手段】上記目的を達成するため
に本発明の空気調和機は、凝縮器として作用する室内側
熱交換器と、複数の回転数で運転され、前記室内側熱交
換器により加熱された空気を吹出し口から室内に送風す
る室内側送風機と、前記室内側熱交換器に対し前記室内
側送風機から送られてくる送風の風上側に配した暖房用
補助ヒータと、前記室内側熱交換器の温度を検出する温
度検出手段と、前記検出温度が所定値以上になると前記
暖房用補助ヒータの通電を停止し、所定値以下になると
通電停止を解除するヒータ通電制限手段と、前記室内側
送風機の風量を判定する風量判定手段と、前記風量判定
手段の判定結果が風量大なるとき、前記ヒータ通電制限
手段の通電停止解除所定値を高くし、風量小なるとき低
くする解除所定値設定手段とを備えている。In order to achieve the above object, the air conditioner of the present invention includes an indoor heat exchanger that functions as a condenser and an indoor heat exchanger that operates at a plurality of rotation speeds. An indoor side blower that blows the air heated by a blower into the room from an outlet, an auxiliary heater for heating arranged on the windward side of the air blown from the indoor side blower with respect to the indoor heat exchanger, and the room A temperature detection means for detecting the temperature of the inner heat exchanger, a heater energization limiting means for stopping energization of the auxiliary heating heater when the detected temperature is equal to or higher than a predetermined value, and canceling the energization stop when the temperature is equal to or lower than a predetermined value, An air volume determination means for determining the air volume of the indoor blower, and a release predetermined value for increasing the energization stop release value of the heater energization limiting means when the air volume of the determination result of the air volume determination means is high, and a low value when the air volume is low. value And a constant means.
【００１７】[0017]
【作用】本発明の空気調和機は、凝縮器として作用する
室内側熱交換器と、複数の回転数で運転され、前記室内
側熱交換器により加熱された空気を吹出し口から室内に
送風する室内側送風機と、前記室内側熱交換器に対し前
記室内側送風機から送られてくる送風の風上側に配した
暖房用補助ヒータと、前記室内側熱交換器の温度を検出
する温度検出手段と、前記検出温度が所定値以上になる
と前記暖房用補助ヒータの通電を停止し、所定値以下に
なると通電停止を解除するヒータ通電制限手段と、前記
室内側送風機の風量を判定する風量判定手段と、前記風
量判定手段の判定結果が風量大なるとき、前記ヒータ通
電制限手段の通電停止解除所定値を高くし、風量小なる
とき低くする解除所定値設定手段とを備えているので、
暖房運転時、暖房用補助ヒータによる吐出圧力の異常上
昇を抑えることができ、さらに、その通電制限の解除温
度を前記室内側送風機の風量に応じて決めるから、通電
制限中の室内暖房負荷の変化に対しても有効な暖房運転
を行うことができる。The air conditioner of the present invention is operated at a plurality of rotation speeds with the indoor heat exchanger acting as a condenser, and blows the air heated by the indoor heat exchanger into the room from the outlet. An indoor blower, an auxiliary heater for heating arranged on the windward side of the air blown from the indoor blower with respect to the indoor heat exchanger, and a temperature detecting means for detecting the temperature of the indoor heat exchanger. A heater energization limiting unit that suspends energization of the heating auxiliary heater when the detected temperature is equal to or higher than a predetermined value, and releases the energization stop when the detected temperature is equal to or lower than a predetermined value; and an air volume determination unit that determines an air volume of the indoor blower. When the determination result of the air volume determination means has a large air volume, a predetermined release value setting means for increasing the energization stop release predetermined value of the heater energization limiting means and lowering it when the air volume decreases is provided.
During heating operation, it is possible to suppress abnormal rise in discharge pressure by the auxiliary heater for heating, and further, the release temperature of the energization restriction is determined according to the air volume of the indoor side blower, so the change in the indoor heating load during the energization restriction. It is possible to perform effective heating operation even for.
【００１８】[0018]
【実施例】以下、本発明による空気調和機の一実施例に
ついて、図面を参照しながら説明する。なお、従来と同
一構成については、同一符号を付して詳細な説明を省略
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an air conditioner according to the present invention will be described below with reference to the drawings. It should be noted that the same configurations as those of the conventional one are denoted by the same reference numerals and detailed description thereof will be omitted.
【００１９】図１は、本発明の一実施例による空気調和
機の構成図、図２は、同実施例の動作を示すフローチャ
ートである。FIG. 1 is a block diagram of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a flow chart showing the operation of the embodiment.
【００２０】図１において、１０は室内側送風機６の送
風量を判定する風量判定手段、１１は、風量判定手段１
０の判定結果が風量大なるときヒータ通電制限手段９の
通電停止解除所定値を高くし、風量小なるとき低くする
解除所定値設定手段である。In FIG. 1, 10 is an air volume determination means for determining the air volume of the indoor blower 6, and 11 is an air volume determination means 1.
It is a release predetermined value setting unit that raises the power supply stop release predetermined value of the heater energization limiting unit 9 when the determination result of 0 is large, and lowers it when the air flow is small.
【００２１】以上のように構成された空気調和機につい
て、以下その動作を説明する。暖房運転時、暖房用補助
ヒータ７に通電されると、室内側熱交換器３へ供給され
る空気が加熱されるので室内側熱交換器３内部の冷媒凝
縮圧力が上昇する。やがて、凝縮圧力の上昇にともなっ
て温度検出手段８が検出した室内側熱交換器３の温度が
所定値（例えば、６０℃）よりも高くなると、ヒータ通
電制御手段９は暖房用補助ヒータ７への通電を停止させ
る。The operation of the air conditioner configured as above will be described below. When the auxiliary heating heater 7 is energized during the heating operation, the air supplied to the indoor heat exchanger 3 is heated, so that the refrigerant condensing pressure inside the indoor heat exchanger 3 rises. Eventually, when the temperature of the indoor heat exchanger 3 detected by the temperature detecting means 8 becomes higher than a predetermined value (for example, 60 ° C.) as the condensing pressure rises, the heater energization control means 9 causes the auxiliary heating heater 7 to operate. Stop energizing.
【００２２】この後、暖房用補助ヒータ７への通電を停
止させたことで、室内側熱交換器３へ供給される空気温
度が低下して冷媒凝縮圧力が下がり温度検出手段８が検
出する室内側熱交換器３の温度が通電停止解除所定値以
下になると、ヒータ制御手段９は室内負荷に応じて暖房
用補助ヒータ７への通電制限を解除する。After that, by stopping the energization of the auxiliary heater 7 for heating, the temperature of the air supplied to the indoor heat exchanger 3 is lowered, the condensing pressure of the refrigerant is lowered, and the chamber detected by the temperature detecting means 8 is detected. When the temperature of the inner heat exchanger 3 becomes equal to or lower than a predetermined value for canceling energization stop, the heater control unit 9 cancels energization restriction to the auxiliary heating heater 7 according to the indoor load.
【００２３】すなわち、風量判定手段１０が室内側送風
機６の送風量を判定し、その結果に基づき、解除所定値
設定手段１１はヒータ制御手段９の通電停止解除所定値
を決定する。すなわち、風量判定結果が大（「強タッ
プ」）のときは、それが使用者によるリモコンからの設
定であったとしても、あるいは室温と設定温度との差に
基づく制御結果であったとしても、暖房能力を必要とし
ているときであるから、通電停止解除所定値を高く（例
えば５５℃と）し、風量判定結果が小（「弱タップ」）
のときは、反対にあまり暖房能力を必要としていないと
きであるから、通電停止解除所定値を低く（例えば５０
℃と）する。That is, the air flow rate determination means 10 determines the air flow rate of the indoor blower 6, and based on the result, the release predetermined value setting means 11 determines the power supply stop release predetermined value of the heater control means 9. That is, when the air volume determination result is large (“strong tap”), even if it is the setting from the remote controller by the user or the control result based on the difference between the room temperature and the set temperature, Since it is when heating capacity is required, the energization stop release predetermined value is increased (for example, 55 ° C), and the air volume determination result is small ("weak tap").
On the contrary, when the heating capacity is not required so much, on the contrary, the predetermined value for canceling the power supply stop is lowered (for example, 50
℃).
【００２４】次に、以上の動作を図２のフローチャート
にもとづき説明する。ステップ３０において、図示しな
い制御装置によって暖房用補助ヒータ７に通電されてい
るか否かを見る。ここで、通電されているとき、ステッ
プ３１へ進み、通電されていないとき、ステップ３４へ
進む。Next, the above operation will be described with reference to the flowchart of FIG. In step 30, it is checked whether or not the auxiliary heating heater 7 is energized by a control device (not shown). Here, when the power is supplied, the process proceeds to step 31, and when the power is not supplied, the process proceeds to step 34.
【００２５】ステップ３１において、室内側熱交換器３
の温度を検出し、ステップ３２へ進む。In step 31, the indoor heat exchanger 3
Is detected, and the process proceeds to step 32.
【００２６】ステップ３２において、検出温度が所定値
（６０℃）以上かを判定し、以上のときはステップ３３
へ進む。In step 32, it is judged whether the detected temperature is a predetermined value (60 ° C.) or higher, and if it is higher than the predetermined value, step 33 is executed.
Go to.
【００２７】ステップ３３において、暖房用補助ヒータ
７への通電を停止させ、暖房用補助ヒータ７への通電を
制限し、凝縮圧力の異常上昇を抑える。In step 33, the energization of the auxiliary heating heater 7 is stopped, the energization of the auxiliary heating heater 7 is restricted, and an abnormal rise in the condensation pressure is suppressed.
【００２８】さらに、この制限を解除するときに行いて
説明する。ステップ３０において、暖房用補助ヒータ７
に通電されていないとき、ステップ３４へ進む。Further, a description will be given when the restriction is lifted. In step 30, auxiliary heater 7 for heating
When the power is not supplied to the power source, the process proceeds to step 34.
【００２９】ステップ３４においては、暖房用補助ヒー
タ７への通電が停止制御中かどうかを判定し、停止制御
中のときは、ステップ３５へ進む。In step 34, it is judged whether or not the energization of the auxiliary heater 7 for heating is under stop control, and if it is under stop control, the routine proceeds to step 35.
【００３０】ステップ３５において、室内送風機の風量
を判定し、ステップ３６へ進む。ステップ３６におい
て、判定された風量の大小に応じて、大なるときステッ
プ３７へ、小なるときステップ３８へ進む。At step 35, the air volume of the indoor blower is judged, and the routine proceeds to step 36. In step 36, depending on the magnitude of the determined air volume, the routine proceeds to step 37 when it becomes larger and to step 38 when it becomes smaller.
【００３１】ステップ３７において、暖房用補助ヒータ
７への通電停止を解除する温度所定値としてＴ１を５５
℃と設定し、ステップ３９へ進む。In step 37, T1 is set to 55 as a temperature predetermined value for releasing the stop of energization to the heating auxiliary heater 7.
C. is set, and the process proceeds to step 39.
【００３２】また、ステップ３８において、暖房用補助
ヒータ７への通電停止を解除する温度所定値としてＴ１
を５０℃と設定し、ステップ３９へ進む。Further, in step 38, T1 is set as the temperature predetermined value for releasing the stop of energization to the auxiliary heater 7 for heating.
Is set to 50 ° C. and the process proceeds to step 39.
【００３３】ステップ３９において、室内側熱交換器３
の温度を検出し、ステップ４０へ進む。In step 39, the indoor heat exchanger 3
Temperature is detected, and the process proceeds to step 40.
【００３４】ステップ４０において、検出温度が所定値
Ｔ１以下かどうかを判定し、以下のときはステップ４１
へ進む。In step 40, it is judged whether or not the detected temperature is less than or equal to a predetermined value T1.
Go to.
【００３５】ステップ４１において、暖房用補助ヒータ
７への通電停止を解除する。以上のように本実施例の空
気調和機は、暖房運転時、凝縮器となる室内側熱交換器
３の温度を検出して暖房用補助ヒータ７への通電を停止
させるヒータ通電制御手段９を備えているから吐出圧力
の異常上昇を防ぐことができ、また、室内側送風機６の
送風量を判定する風量判定手段１０と、その判定結果
が、風量大なるときヒータ制御手段９の通電停止解除所
定値を高くし、風量小なるとき低くする解除所定値設定
手段１１とを備えているので、通電制限中の室内暖房負
荷の変化に対しても有効な暖房運転を行うことができ
る。In step 41, the stop of energization of the heating auxiliary heater 7 is released. As described above, the air conditioner of the present embodiment includes the heater energization control means 9 that detects the temperature of the indoor heat exchanger 3 serving as a condenser and stops energization of the auxiliary heating heater 7 during the heating operation. Since it is provided, it is possible to prevent an abnormal rise in the discharge pressure, and to release the energization of the heater control means 9 when the air volume determination means 10 determines the air volume of the indoor blower 6 and the result of the determination is large. Since the predetermined release value setting means 11 that raises the predetermined value and lowers it when the air volume decreases is provided, it is possible to perform an effective heating operation even when the indoor heating load changes while the energization is limited.
【００３６】[0036]
【発明の効果】以上説明したように本発明は、凝縮器と
して作用する室内側熱交換器と、複数の回転数で運転さ
れ、前記室内側熱交換器により加熱された空気を吹出し
口から室内に送風する室内側送風機と、前記室内側熱交
換器に対し前記室内側送風機から送られてくる送風の風
上側に配した暖房用補助ヒータと、前記室内側熱交換器
の温度を検出する温度検出手段と、前記検出温度が所定
値以上になると前記暖房用補助ヒータの通電を停止し、
所定値以下になると通電停止を解除するヒータ通電制限
手段と、前記室内側送風機の風量を判定する風量判定手
段と、前記風量判定手段の判定結果が風量大なるとき、
前記ヒータ通電制限手段の通電停止解除所定値を高く
し、風量小なるとき低くする解除所定値設定手段と空気
調和機を構成するので、暖房運転時、暖房用補助ヒータ
による吐出圧力の異常上昇を抑えることができるととも
に、その通電制限の解除温度を前記室内側送風機の風量
に応じて決めるから、通電制限中の室内暖房負荷の変化
に対しても有効な暖房運転を行うことができるINDUSTRIAL APPLICABILITY As described above, according to the present invention, the indoor heat exchanger acting as a condenser and the air heated by the indoor heat exchanger, which is operated at a plurality of rotation speeds, are discharged from the outlet to the indoor space. To the indoor heat exchanger, the auxiliary heater for heating arranged on the windward side of the air blown from the indoor blower with respect to the indoor heat exchanger, and the temperature for detecting the temperature of the indoor heat exchanger. When the detection means and the detected temperature are equal to or higher than a predetermined value, the energization of the heating auxiliary heater is stopped,
When the heater energization limiting means for releasing the energization stop when the value is equal to or less than a predetermined value, the air volume determination means for determining the air volume of the indoor blower, and the determination result of the air volume determination means is large,
Since the air conditioner and the release predetermined value setting means for increasing the predetermined value for releasing the energization stop of the heater energization limiting means and lowering the predetermined value when the air volume is small, an abnormal increase in the discharge pressure by the auxiliary heater for heating during heating operation is performed. In addition to suppressing the energization limit, the release temperature of the energization limit is determined according to the air volume of the indoor blower, so that it is possible to perform an effective heating operation even when the indoor heating load changes during the energization limit.
【図１】本発明による空気調和機の一実施例における構
成図FIG. 1 is a configuration diagram of an air conditioner according to an embodiment of the present invention.
【図２】同実施例の動作を示すフローチャートFIG. 2 is a flowchart showing the operation of the embodiment.
【図３】従来の空気調和機の構成図FIG. 3 is a configuration diagram of a conventional air conditioner
１ 圧縮機 ３ 室内側熱交換器 ６ 室内側送風機 ７ 暖房用補助ヒータ ８ 温度検出手段 ９ ヒータ通電制限手段 １０ 風量判定手段 １１ 解除所定値設定手段 DESCRIPTION OF SYMBOLS 1 Compressor 3 Indoor heat exchanger 6 Indoor blower 7 Auxiliary heater for heating 8 Temperature detection means 9 Heater energization limiting means 10 Air volume determination means 11 Release predetermined value setting means
Claims (1)
て凝縮器として作用するように接続された室内側熱交換
器と、複数の回転数で運転され、前記室内側熱交換器に
より加熱された空気を吹出し口から室内に送風する室内
側送風機と、前記室内側熱交換器に対し前記室内側送風
機から送られてくる送風の風上側に配した暖房用補助ヒ
ータと、前記室内側熱交換器の温度を検出する温度検出
手段と、前記検出温度が所定値以上になると前記暖房用
補助ヒータへの通電を停止させ、所定値以下になると通
電停止を解除するヒータ通電制限手段と、前記室内側送
風機の風量を判定する風量判定手段と、前記風量判定手
段の判定結果が風量大なるとき、前記ヒータ通電制限手
段の通電停止解除所定値を高くし、風量小なるとき低く
する解除所定値設定手段とを備えた空気調和機。1. A compressor, an indoor heat exchanger connected to the compressor via a refrigerant flow path so as to act as a condenser, and the indoor heat exchanger operated at a plurality of rotation speeds. An indoor side blower that blows the air heated by a blower into the room from an outlet, an auxiliary heater for heating arranged on the windward side of the air blown from the indoor side blower with respect to the indoor heat exchanger, and the room Temperature detection means for detecting the temperature of the inner heat exchanger, and heater energization limiting means for stopping energization to the auxiliary heating heater when the detected temperature is equal to or higher than a predetermined value, and canceling the energization stop when the detected temperature is equal to or lower than the predetermined value. An air volume determination means for determining the air volume of the indoor blower, and when the air volume determination result of the air volume determination means is large, release of energization stop of the heater energization limiting means is increased, and a predetermined value is decreased when the air volume is small. Set predetermined value And an air conditioner having means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5077830A JPH06288599A (en) | 1993-04-05 | 1993-04-05 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5077830A JPH06288599A (en) | 1993-04-05 | 1993-04-05 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06288599A true JPH06288599A (en) | 1994-10-11 |
Family
ID=13644964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5077830A Pending JPH06288599A (en) | 1993-04-05 | 1993-04-05 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06288599A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237717A (en) * | 2018-11-27 | 2019-01-18 | 奥克斯空调股份有限公司 | A kind of air-conditioning electric heating heat protection method, device and air conditioner |
-
1993
- 1993-04-05 JP JP5077830A patent/JPH06288599A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237717A (en) * | 2018-11-27 | 2019-01-18 | 奥克斯空调股份有限公司 | A kind of air-conditioning electric heating heat protection method, device and air conditioner |
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