JPH0727392A - Air-conditioner - Google Patents
Air-conditionerInfo
- Publication number
- JPH0727392A JPH0727392A JP5173104A JP17310493A JPH0727392A JP H0727392 A JPH0727392 A JP H0727392A JP 5173104 A JP5173104 A JP 5173104A JP 17310493 A JP17310493 A JP 17310493A JP H0727392 A JPH0727392 A JP H0727392A
- Authority
- JP
- Japan
- Prior art keywords
- heating
- temperature
- predetermined value
- heat exchanger
- energization
- 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
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、特に暖房用
補助ヒータを有する空気調和機の暖房過負荷制御に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to heating overload control for an air conditioner having an auxiliary heater for heating.
【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現われてきた。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.
Therefore, in the indoor unit, an auxiliary heater for heating is built in the indoor heat exchanger, or a heater arranged on the windward side of the indoor heat exchanger has appeared.
【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や、ま
た、別に暖房過負荷状態を検出して室外側送風機を停止
させ、蒸発圧力、すなわち圧縮機吸入圧力を低下させる
ことで吐出圧力の上昇を防止させる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. The auxiliary heater is de-energized to suppress the abnormal increase of the condensation pressure, that is, the discharge pressure, and the frequent operation of the pressure switch is prevented. It has been devised that the discharge pressure is prevented from rising by stopping and reducing the evaporation pressure, that is, the compressor suction pressure.
【０００６】以下に従来の空気調和機の一例について説
明する。図７は従来の空気調和機の概略構成図である。
図７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。An example of a conventional air conditioner will be described below. FIG. 7 is a schematic configuration diagram of a conventional air conditioner.
In FIG. 7, 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.
【０００７】６は室内側送風機であり、通常複数回転数
で運転される。７は室外側送風機、８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。９は吐出圧力の異常上昇に対して圧縮機１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、１
０は圧力スイッチ９よりも低い圧力に対し動作する暖房
過負荷状態を検出するための圧力スイッチで、１１は圧
力スイッチ１０が過負荷状態を検出したときに室外送風
機７を停止させる暖房過負荷制御手段、１２は室内側熱
交換器３の温度を検出する温度検出手段、１３は温度検
出手段１２の検出温度によって暖房用補助ヒータ８への
通電を停止させるヒータ通電制限手段である。Reference numeral 6 denotes an indoor blower, which is normally operated at a plurality of rotation speeds. Reference numeral 7 is an outdoor blower, and 8 is an auxiliary heater for heating provided on the windward side of the heat exchange air of the indoor heat exchanger 3. Reference numeral 9 is a pressure switch that responds to the discharge pressure in order to protect the compressor 1 against abnormal rises in the discharge pressure.
Reference numeral 0 is a pressure switch for detecting a heating overload state that operates at a pressure lower than that of the pressure switch 9, and 11 is heating overload control for stopping the outdoor blower 7 when the pressure switch 10 detects an overload state. Means, 12 is temperature detecting means for detecting the temperature of the indoor heat exchanger 3, and 13 is heater energization limiting means for stopping energization of the auxiliary heater 8 for heating by the temperature detected by the temperature detecting means 12.
【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７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。The operation of the air conditioner configured as above will be described. In FIG. 7, 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.
【０００９】凝縮した冷媒液は減圧手段４を通ることで
低温低圧の二相状態となり、室外側熱交換器５へ行き、
室外側送風機７によって送られた室外空気によって加熱
され、ガス状態となって四方弁２を経て圧縮機１へ戻
る。The condensed refrigerant liquid passes through the pressure reducing means 4 to be in a two-phase state of low temperature and low pressure, and goes to the outdoor heat exchanger 5,
It is heated by the outdoor air sent by the outdoor blower 7, becomes a gas state, and returns to the compressor 1 via the four-way valve 2.
【００１０】また、暖房用補助ヒータ８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 8 for heating is installed to compensate for insufficient heating capacity at the beginning of heating operation when it is cold, and 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.
【００１１】春、秋等の中間期などに凝縮圧力が高くな
ると、圧力スイッチ１０が過負荷状態を検出し、それを
受けて暖房過負荷制御手段１１が室外送風機７を停止さ
せ、蒸発圧力、すなわち圧縮機１の吸入圧力を低下させ
ることで吐出圧力を低下させる。When the condensing pressure becomes high in the middle of spring, autumn, etc., the pressure switch 10 detects an overload condition, and the heating overload control means 11 stops the outdoor blower 7 in response to this, and the evaporation pressure, That is, the discharge pressure is reduced by reducing the suction pressure of the compressor 1.
【００１２】また、暖房用補助ヒータ８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８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 8 for heating is energized, the air supplied to the indoor heat exchanger 3 is heated by the auxiliary heater 8 for heating. The indoor heat exchanger 3 is supplied to the exchanger 3.
The internal refrigerant condensing pressure rises.
【００１３】この結果、凝縮圧力が高くなりすぎると、
温度検出手段１２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ので、ヒータ通電制限手段１３は
暖房用補助ヒータ８への通電を停止させる。As a result, if the condensation pressure becomes too high,
Since the temperature of the indoor heat exchanger 3 detected by the temperature detecting means 12 becomes higher than a predetermined value, the heater energization limiting means 13 stops energizing the auxiliary heating heater 8.
【００１４】また、暖房用補助ヒータ８への通電制限の
解除は、温度検出手段１２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 indoor heat exchanger 3 detected by the temperature detecting means 12 is used to release the restriction of energization to the auxiliary heater 8 for heating.
Is performed when the temperature 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.
【００１５】[0015]
【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、暖房用補助ヒータ８への通電制限と、室外
側送風機７による暖房過負荷制御を個別に行なっている
ため、お互いの制御が干渉し合って安定した運転が得ら
れないという欠点があった。However, in the above-mentioned conventional configuration, since the energization limitation to the auxiliary heater 8 for heating and the heating overload control by the outdoor blower 7 are individually performed, the controls interfere with each other. There was a drawback that stable operation could not be obtained.
【００１６】すなわち、いずれの保護制御も凝縮圧力が
高くなった時に動作するので、お互いの保護効果が重な
り合って急激に凝縮圧力が低下したり、逆に解除された
場合に再び急激に凝縮圧力が上昇したりと、冷凍サイク
ルの高低圧力を急激に上下させてしまうという現象が発
生する。That is, since both protection controls operate when the condensing pressure becomes high, the condensing pressures suddenly decrease due to the mutual protection effects overlapping each other, or conversely, when the condensing pressure is released, the condensing pressure suddenly increases again. When the temperature rises, the phenomenon that the high and low pressure of the refrigeration cycle is suddenly raised and lowered occurs.
【００１７】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。Particularly when a high-pressure shell type compressor is used, a rapid change in high and low pressures in the refrigeration cycle causes a foaming phenomenon of refrigerating machine oil in the compressor shell,
There is a drawback that the amount of refrigerating machine oil discharged from the compressor is increased and the reliability of the compressor is impaired.
【００１８】また、さらに、暖房用補助ヒータへ通電す
ることで特に中間期などに凝縮圧力が上昇し、室外機の
暖房過負荷制御が働き、ヒートポンプ運転が制限されて
しまい省エネルギー運転ができないという欠点もあっ
た。Further, when the auxiliary heater for heating is energized, the condensing pressure rises especially during the intermediate period, the heating overload control of the outdoor unit works, and the heat pump operation is limited, so that energy saving operation cannot be performed. There was also.
【００１９】本発明は、上記従来の課題を解決するもの
で、暖房時、保護制御同士が干渉することがなく安定し
た運転を得る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 an object of the present invention is to provide an air conditioner capable of obtaining stable operation without interference between protection controls during heating.
【００２０】[0020]
【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、圧縮機と、室外側熱交換器
と、前記室外側熱交換器近傍に配された室外側送風機
と、前記圧縮機及び前記室外側熱交換器と冷媒流路を介
して、暖房時、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、前記室内側熱交換器に対し熱交換空
気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、前記温度検出
手段の検出温度が第１の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、所定時間経過後、前記
温度検出手段の検出温度が前記第１の所定値より低い第
２の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、前記圧縮機の暖房過負荷状態を検出して、
前記室外側送風機の送風を停止させる暖房過負荷制御手
段とを備えている。To achieve the above object, an air conditioner of the present invention comprises a compressor, an outdoor heat exchanger, and an outdoor blower arranged near the outdoor heat exchanger. , An indoor heat exchanger connected to act as a condenser during heating via the refrigerant flow path with the compressor and the outdoor heat exchanger, and heat exchange air for the indoor heat exchanger Auxiliary heater for heating arranged on the windward side, temperature detecting means for detecting the temperature of the indoor heat exchanger, and when the detected temperature of the temperature detecting means is equal to or higher than a first predetermined value, the auxiliary heater for heating is provided. Is stopped, and after a lapse of a predetermined time, when the temperature detected by the temperature detecting means becomes equal to or lower than a second predetermined value lower than the first predetermined value, the heater energization limiting means for releasing the stop of energization, Detects a heating overload condition,
And a heating overload control means for stopping the blowing of the outdoor blower.
【００２１】また、圧縮機と、室外側熱交換器と、前記
室外側熱交換器近傍に配された室外側送風機と、前記圧
縮機及び前記室外側熱交換器と冷媒流路を介して、暖房
時、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、前記室内側熱交換器に対し熱交換空気の風上側
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、前記温度検出手段の検出
温度が第１の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、前記温度検出手段の検出温度が前
記第１の所定値より低い第２の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、前記ヒータ通電
制限手段が、前記暖房用補助ヒータへの通電を停止させ
てから解除するまでの時間を計時するタイマーを持ち、
その計時時間が所定時間より長い場合、前記通電停止開
始所定値と通電停止解除所定値を低く設定しなおすヒー
タ通電制限手段と、前記圧縮機の暖房過負荷状態を検出
して前記室外側送風機の送風を停止させる暖房過負荷制
御手段とを備えている。Further, via a compressor, an outdoor heat exchanger, an outdoor blower arranged near the outdoor heat exchanger, the compressor and the outdoor heat exchanger, and a refrigerant flow path, During heating, the indoor heat exchanger connected to act as a condenser, an auxiliary heater for heating arranged on the windward side of the heat exchange air with respect to the indoor heat exchanger, and the indoor heat exchanger When the temperature detection means for detecting the temperature and the temperature detected by the temperature detection means exceed a first predetermined value, the energization of the heating auxiliary heater is stopped, and the temperature detected by the temperature detection means is determined by the first predetermined value. A heater energization limiting unit that releases the energization stop when the value is less than or equal to a second predetermined value lower than the value, and the heater energization limiting unit measures the time from when the energization to the heating auxiliary heater is stopped until the deenergization is released. Have a timer,
When the timed time is longer than a predetermined time, the heater energization limiting means for resetting the energization stop start predetermined value and the energization stop release predetermined value to be low, and the heating overload state of the compressor are detected to detect the outdoor blower. And heating overload control means for stopping blowing air.
【００２２】また、さらに、圧縮機と、室外側熱交換器
と、前記室外側熱交換器近傍に配された室外側送風機
と、前記圧縮機及び前記室外側熱交換器と冷媒流路を介
して、暖房時、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、前記室内側熱交換器に対し熱交換空
気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、前記温度検出
手段の検出温度が第１の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、その後、前記第１の所
定値より第２の所定値だけ低くなると通電停止を解除す
るヒータ通電制限手段と、前記圧縮機の暖房過負荷状態
を検出して前記室外側送風機の送風を停止させる暖房過
負荷制御手段と、前記ヒータ通電制限手段が前記暖房用
補助ヒータに対する通電制限をしていないときに前記暖
房過負荷制御手段が暖房過負荷状態を検出し、前記室外
送風機を停止した場合、そのときに前記温度検出手段が
検出した温度より所定値低い温度を前記第１の所定値と
して設定しなおす所定値変更手段とを備えている。Further, a compressor, an outdoor heat exchanger, an outdoor blower arranged near the outdoor heat exchanger, the compressor and the outdoor heat exchanger, and a refrigerant flow path. The indoor side heat exchanger connected to act as a condenser during heating, the heating auxiliary heater arranged on the windward side of the heat exchange air with respect to the indoor side heat exchanger, and the indoor side heat exchange. Temperature detecting means for detecting the temperature of the heater, and when the temperature detected by the temperature detecting means becomes equal to or higher than a first predetermined value, the energization of the auxiliary heater for heating is stopped, and then the second predetermined value is exceeded. The heater energization limiting means for canceling the energization stop when the value becomes lower by a predetermined value, the heating overload control means for detecting the heating overload state of the compressor and stopping the ventilation of the outdoor blower, and the heater energization limiting means. Is for the auxiliary heater for heating When the heating overload control means detects the heating overload state when the electric power is not limited and the outdoor blower is stopped, the temperature lower than the temperature detected by the temperature detection means at the time is a predetermined value. And a predetermined value changing means for resetting the predetermined value of 1.
【００２３】[0023]
【作用】本発明の空気調和機は、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の温度を検出する温度
検出手段と、前記温度検出手段の検出温度が第１の所定
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、所定時間経過後、前記検出温度が前記第１の所定値
より低い第２の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、圧縮機の暖房過負荷状態を検出
して室外側送風機の送風を停止させる暖房過負荷制御手
段とを備えているので、一旦、前記暖房用補助ヒータへ
の通電を停止させた後は所定時間通電を許さないので、
保護制御同士が干渉することがなく安定した運転を得る
ことができる。In the air conditioner of the present invention, the temperature detecting means for detecting the temperature of the indoor heat exchanger connected so as to act as a condenser, and the temperature detected by the temperature detecting means are equal to or higher than a first predetermined value. Then, the heater energization limiting means for stopping the energization to the heating auxiliary heater, and releasing the energization stop when the detected temperature becomes equal to or lower than a second predetermined value lower than the first predetermined value after a predetermined time elapses, Since a heating overload control means for detecting the heating overload state of the compressor and stopping the air blow of the outdoor blower is provided, once the power supply to the heating auxiliary heater is stopped, the power is supplied for a predetermined time. I will not allow
Stable operation can be obtained without the protection controls interfering with each other.
【００２４】また、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の温度を検出する温度検出手段と、
前記温度検出手段の検出温度が第１の所定値以上になる
と前記暖房用補助ヒータへの通電を停止させ、前記検出
温度が前記第１の所定値より低い第２の所定値以下にな
ると通電停止を解除するヒータ通電制限手段と、前記ヒ
ータ通電制限手段が、前記暖房用補助ヒータへの通電を
停止させてから解除するまでの時間を計時するタイマー
を持ち、その計時時間が所定時間より長い場合、前記通
電停止開始所定値と通電停止解除所定値を低く設定しな
おす所定値変更手段と、圧縮機の暖房過負荷状態を検出
して室外側送風機の送風を停止させる暖房過負荷制御手
段とを備えているので、過負荷状態が厳しいときにはよ
り早目に前記暖房用補助ヒータへの通電を制限するよう
になり、保護制御同士が干渉することがなく安定した運
転を得ることができるとともに、ヒートポンプ運転を優
先することができる。Temperature detecting means for detecting the temperature of the indoor heat exchanger connected so as to act as a condenser,
When the temperature detected by the temperature detecting means is equal to or higher than a first predetermined value, the energization to the auxiliary heater for heating is stopped, and when the detected temperature is equal to or lower than a second predetermined value lower than the first predetermined value, energization is stopped. When the heater energization limiting means for canceling the power supply and the heater energization limiting means have a timer for counting the time from when the energization to the heating auxiliary heater is stopped to when the heating is stopped, when the timed time is longer than a predetermined time A predetermined value changing means for resetting the power supply stop start predetermined value and the power supply stop release predetermined value to a low value, and a heating overload control means for detecting the heating overload state of the compressor and stopping the air blow of the outdoor blower. Since it is provided, the energization of the heating auxiliary heater is restricted earlier when the overload condition is severe, and stable operation can be obtained without the protection controls interfering with each other. Rutotomoni, it is possible to preferentially heat pump operation.
【００２５】また、さらに、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の温度を検出する温度検出
手段と、前記温度検出手段の検出温度が第１の所定値以
上になると前記暖房用補助ヒータへの通電を停止させ、
その後、前記第１の所定値より第２の所定値だけ低くな
ると通電停止を解除するヒータ通電制限手段と、圧縮機
の暖房過負荷状態を検出して室外側送風機の送風を停止
させる暖房過負荷制御手段と、前記ヒータ通電制限手段
が前記暖房用補助ヒータに対する通電制限をしていない
ときに前記暖房過負荷制御手段が暖房過負荷状態を検出
し、前記室外送風機を停止した場合、そのときに前記温
度検出手段が検出した温度より所定値低い温度を前記第
１の所定値として設定しなおす所定値変更手段とを備え
ているので、ヒートポンプ運転への制限が働く前に暖房
用補助ヒータへの通電を制限するようになり、保護制御
同士が干渉することがなく安定した運転を得ることがで
きるとともに、ヒートポンプ運転を優先することができ
る。Further, the temperature detecting means for detecting the temperature of the indoor heat exchanger connected so as to act as a condenser, and the heating when the temperature detected by the temperature detecting means exceeds a first predetermined value. Stop energizing the auxiliary heater for
Thereafter, the heater energization limiting means for releasing the energization stop when the value becomes lower than the first predetermined value by the second predetermined value, and the heating overload for detecting the heating overload state of the compressor to stop the air blow of the outdoor blower. When the heating overload control unit detects a heating overload state when the control unit and the heater energization limiting unit are not energizing the heating auxiliary heater, and the outdoor blower is stopped, at that time, Since a predetermined value changing means for resetting the temperature lower than the temperature detected by the temperature detecting means by the predetermined value as the first predetermined value is provided, the auxiliary heater for heating is supplied to the auxiliary heater for heating before the limitation to the heat pump operation is exerted. The energization is restricted, stable operation can be obtained without interference between protection controls, and heat pump operation can be prioritized.
【００２６】[0026]
【実施例】以下、本発明による空気調和機の第１の実施
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 A first 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.
【００２７】図１は、本発明の第１の実施例による空気
調和機の構成図である。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 a first embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the embodiment.
【００２８】図１において、１４は温度検出手段１２の
検出温度が第１の所定値以上になると暖房用補助ヒータ
８への通電を停止させ、所定時間経過後に温度検出手段
１２の検出温度が前記第１の所定値より低い第２の所定
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
である。In FIG. 1, 14 indicates that when the temperature detected by the temperature detecting means 12 becomes equal to or higher than the first predetermined value, the auxiliary heater 8 for heating is de-energized, and the temperature detected by the temperature detecting means 12 after the predetermined time elapses. It is a heater energization limiting means that releases the energization stop when the value becomes equal to or less than a second predetermined value lower than the first predetermined value.
【００２９】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８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１２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
電制限手段１４は暖房用補助ヒータ８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 heater 8 for heating 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 12 becomes higher than a predetermined value (for example, 60 ° C.) as the condensing pressure increases, the heater energization limiting means 14 causes the heating auxiliary heater 8 to operate. Stop energizing.
【００３０】この後、ヒータ通電制限手段１４は所定時
間（例えば３０分間）経過するまでは、たとえ暖房用補
助ヒータ８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１２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っても暖房用補助ヒー
タ８への通電を停止させたままとする。After that, until the heater energization limiting means 14 elapses a predetermined time (for example, 30 minutes), the air supplied to the indoor heat exchanger 3 is stopped by stopping the energization of the auxiliary heater 8 for heating. Even if the temperature decreases and the refrigerant condensing pressure decreases, and the temperature of the indoor heat exchanger 3 detected by the temperature detecting means 12 becomes equal to or lower than a predetermined value for canceling energization stop, energization to the auxiliary heater 8 for heating is stopped. And
【００３１】やがて、所定時間が経過した後に温度検出
手段１２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っていれば暖房用補助ヒータ８への
通電停止を解除する。Eventually, if the temperature of the indoor heat exchanger 3 detected by the temperature detecting means 12 after the lapse of a predetermined time is less than a predetermined value for canceling energization stop, the stop of energization to the auxiliary heater 8 for heating is released. .
【００３２】この間、圧力スイッチ１０が過負荷状態を
検出すれば、それを受けて暖房過負荷制御手段１１は室
外側送風機７を停止させ、圧縮機１の保護を図るが、暖
房用補助ヒータ８への通電が停止したままなので、お互
いの制御が干渉して急激に圧力が上下することはない。During this time, if the pressure switch 10 detects an overload state, the heating overload control means 11 receives it and stops the outdoor blower 7 to protect the compressor 1, but the auxiliary heater 8 for heating. Since the energization to is still stopped, there is no sudden increase or decrease in pressure due to mutual control interference.
【００３３】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２０において、室内側熱
交換器３の温度を検出し、ステップ３０へ進む。Next, the above operation will be described with reference to the flowchart of FIG. In step 20, the temperature of the indoor heat exchanger 3 is detected, and the process proceeds to step 30.
【００３４】ステップ３０において、ヒータ通電制限手
段１４によって暖房用補助ヒータ８への通電が制限され
ているか否かを見る。ここで、制限されている（停止制
御中）ときはステップ３１へ進み、制限されていないと
きはステップ４０へ進む。In step 30, it is checked whether or not the heater energization limiting means 14 limits the energization of the auxiliary heating heater 8. Here, if restricted (during stop control), the process proceeds to step 31, and if not restricted, the process proceeds to step 40.
【００３５】ステップ４０において、暖房用補助ヒータ
８に通電されているかを判定し、通電されているときは
ステップ４１へ進む。In step 40, it is judged whether or not the auxiliary heater 8 for heating is energized, and if energized, the process proceeds to step 41.
【００３６】ステップ４１において、検出温度が所定値
（例えば６０℃）以上かを判定し、以上のときはステッ
プ４２へ進む。In step 41, it is judged whether or not the detected temperature is a predetermined value (for example, 60 ° C.) or more, and if it is above, the process proceeds to step 42.
【００３７】ステップ４２において、暖房用補助ヒータ
へ８の通電を停止させ凝縮圧力の異常上昇を抑え、ステ
ップ４３へ進む。At step 42, the energization of the auxiliary heater 8 for heating is stopped to suppress the abnormal increase of the condensation pressure, and the routine proceeds to step 43.
【００３８】ステップ４３において、所定時間（例えば
３０分間）を計時するタイマーをスタートさせる。In step 43, a timer for counting a predetermined time (for example, 30 minutes) is started.
【００３９】さらに、この制限を解除するときについて
説明する。ステップ３０において、暖房用補助ヒータ８
への通電が制限されているとき（停止制御中）はステッ
プ３１へ進む。Further, the case of releasing this restriction will be described. In step 30, auxiliary heater 8 for heating
When the energization to is restricted (during stop control), the routine proceeds to step 31.
【００４０】ステップ３１において、ヒータ通電制限手
段１４が暖房用補助ヒータ８への通電を停止してから所
定時間が経過したかを判定し、経過していればステップ
５０へ進む。In step 31, it is judged whether or not a predetermined time has passed since the heater energization limiting means 14 stopped energizing the auxiliary heating heater 8 and if so, the routine proceeds to step 50.
【００４１】ステップ５０において、検出温度が所定値
（例えば５０℃）以下かを判定し、以下のときはステッ
プ５１へ進む。At step 50, it is judged whether the detected temperature is below a predetermined value (for example, 50 ° C.), and if it is below, the routine proceeds to step 51.
【００４２】ステップ５１において、暖房用補助ヒータ
８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、暖房時、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３の温度を検出する温度検出手段
１２と、温度検出手段１２の検出温度が第１の所定値以
上になると暖房用補助ヒータ８への通電を停止させ、所
定時間経過後、温度検出手段１２の検出温度が前記第１
の所定値より低い第２の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１４と、圧縮機１の暖房過
負荷状態を検出して室外側送風機７の送風を停止させる
暖房過負荷制御手段１１とを備えているので、一旦、暖
房用補助ヒータ８への通電を停止させた後は所定時間通
電停止を継続し、保護制御同士が干渉することがなく安
定した運転を得ることができる。In step 51, the stop of energization to the auxiliary heating heater 8 is released. As described above, in the air conditioner of the present embodiment, the temperature detection unit 12 that detects the temperature of the indoor heat exchanger 3 that is connected to act as a condenser during heating, and the temperature detected by the temperature detection unit 12 Is greater than or equal to the first predetermined value, the energization of the auxiliary heater 8 for heating is stopped, and after a predetermined time elapses, the temperature detected by the temperature detection means 12 is the first temperature.
Heater energization limiting means 14 for canceling the energization stop when the value becomes equal to or less than a second predetermined value lower than the predetermined value, and heating overload control for detecting the heating overload state of the compressor 1 and stopping the blowing of the outdoor blower 7. Since the means 11 is provided, the power supply to the heating auxiliary heater 8 is once stopped, and then the power supply is stopped for a predetermined time, so that stable operation can be obtained without the protection controls interfering with each other. .
【００４３】次に、本発明による空気調和機の第２の実
施例について、図面を参照しながら説明する。なお、第
１の実施例と同一構成については、同一符号を付して詳
細な説明は省略する。Next, a second embodiment of the air conditioner according to the present invention will be described with reference to the drawings. The same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.
【００４４】図３は、本発明の第２の実施例による空気
調和機の構成図である。図４は、同実施例の動作を示す
フローチャートである。FIG. 3 is a block diagram of an air conditioner according to a second embodiment of the present invention. FIG. 4 is a flowchart showing the operation of the embodiment.
【００４５】図３において、１５はヒータ通電制限手段
１３が、暖房用補助ヒータ８への通電を停止させてから
解除するまでの時間を計時するタイマーを持ち、その計
時時間が所定時間より長い場合、前記通電停止開始所定
値と通電停止解除所定値を低く設定しなおす設定値変更
手段である。In FIG. 3, reference numeral 15 denotes a heater energization limiting means 13 having a timer for measuring the time from when the energization of the auxiliary heating heater 8 is stopped to when it is released, and when the measured time is longer than a predetermined time. The set value changing means resets the power supply stop start predetermined value and the power supply stop release predetermined value to be low.
【００４６】以上のように構成された空気調和機につい
て、以下その動作を図４のフローチャートにもとづき説
明する。The operation of the air conditioner configured as described above will be described below with reference to the flowchart of FIG.
【００４７】ステップ２０において、室内側熱交換器３
の温度を検出し、ステップ３０へ進む。In step 20, the indoor heat exchanger 3
Temperature is detected, and the process proceeds to step 30.
【００４８】ステップ３０において、ヒータ通電制限手
段１３によって暖房用補助ヒータ８への通電が制限され
ているか否かを見る。ここで、制限されている（停止制
御中）ときはステップ５０へ進み、制限されていないと
きはステップ４０へ進む。In step 30, it is checked whether or not the heater energization limiting means 13 restricts energization of the auxiliary heating heater 8. Here, if it is restricted (during stop control), the process proceeds to step 50, and if it is not restricted, the process proceeds to step 40.
【００４９】ステップ４０において、暖房用補助ヒータ
８に通電されているかを判定し、通電されているときは
ステップ４１へ進む。In step 40, it is judged whether or not the auxiliary heater 8 for heating is energized, and if it is energized, the routine proceeds to step 41.
【００５０】ステップ４１において、検出温度が所定値
（例えば６０℃）以上かを判定し、以上のときはステッ
プ４２へ進む。In step 41, it is judged whether or not the detected temperature is a predetermined value (for example, 60 ° C.) or more, and if it is above, the process proceeds to step 42.
【００５１】ステップ４２において、暖房用補助ヒータ
８への通電を停止させ凝縮圧力の異常上昇を抑え、ステ
ップ４３へ進む。In step 42, the energization of the heating auxiliary heater 8 is stopped to suppress the abnormal increase in the condensation pressure, and the process proceeds to step 43.
【００５２】ステップ４３において、暖房用補助ヒータ
８への通電停止時間を計時するタイマーをスタートさせ
る。In step 43, a timer for counting the power-off time to the auxiliary heating heater 8 is started.
【００５３】さらに、この制限を解除するときについて
説明する。ステップ３０において、暖房用補助ヒータ８
への通電が制限されているとき（停止制御中）はステッ
プ５０へ進む。Further, the case of releasing this restriction will be described. In step 30, auxiliary heater 8 for heating
When the energization to is restricted (during stop control), the routine proceeds to step 50.
【００５４】ステップ５０において、検出温度が所定値
（例えば５０℃）以下かを判定し、以下のときはステッ
プ５１へ進む。In step 50, it is judged whether the detected temperature is below a predetermined value (for example, 50 ° C.), and if it is below, the process proceeds to step 51.
【００５５】ステップ５１において、暖房用補助ヒータ
８への通電停止を解除し、ステップ５２へ進む。In step 51, the stop of energization of the auxiliary heater 8 for heating is released, and the process proceeds to step 52.
【００５６】ステップ５２において、ステップ４３にお
いてスタートさせたタイマーをストップし、ステップ５
３へ進む。In step 52, the timer started in step 43 is stopped, and step 5
Go to 3.
【００５７】ステップ５３において、計時した暖房用補
助ヒータ８への通電停止時間が所定値（例えば１０分）
よりも長いかを判定し、長いときには過負荷状態が厳し
いのだから、ステップ５４へ進む。In step 53, the time during which the electricity is supplied to the auxiliary heater 8 for heating, which has been timed, is stopped for a predetermined value (for example, 10 minutes).
If it is longer, it means that the overload condition is severe, so the routine proceeds to step 54.
【００５８】ステップ５４において、暖房用補助ヒータ
８への通電停止を開始する温度（Ｔ１）を所定値（例え
ば５℃）低い温度に設定し直し、ステップ５５へ進む。In step 54, the temperature (T1) at which the power supply to the heating auxiliary heater 8 is stopped is reset to a temperature lower by a predetermined value (for example, 5 ° C.), and the process proceeds to step 55.
【００５９】ステップ５５において、暖房用補助ヒータ
８への通電停止を解除する温度（Ｔ２）を所定値（例え
ば５℃）低い温度に設定し直す。In step 55, the temperature (T2) at which the power supply to the auxiliary heating heater 8 is released is reset to a temperature lower by a predetermined value (for example, 5 ° C.).
【００６０】以上のように本実施例の空気調和機は、暖
房時、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３の温度を検出する温度検出手段１２と、温度検
出手段１２の検出温度が第１の所定値以上になると暖房
用補助ヒータ８への通電を停止させ、前記検出温度が前
記第１の所定値より低い第２の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１３と、ヒータ通電
制限手段１３が暖房用補助ヒータ８への通電を停止させ
てから解除するまでの時間を計時するタイマーを持ち、
その計時時間が所定時間より長い場合、前記通電停止開
始所定値と通電停止解除所定値を低く設定しなおす所定
値変更手段１５と、圧縮機１の暖房過負荷状態を検出し
て室外側送風機７の送風を停止させる暖房過負荷制御手
段１１とを備えているので、暖房用補助ヒータ８への通
電停止時間が長いような過負荷状態が厳しいときには、
ヒータ通電制限手段１３が暖房用補助ヒータ８への通電
停止を開始する温度を低く設定し直すことで、より早目
に暖房用補助ヒータ８への通電を制限するようになり、
保護制御同士が干渉することがなく安定した運転を得る
ことができるとともに、ヒートポンプ運転を優先するこ
とができる。As described above, in the air conditioner of the present embodiment, the temperature detecting means 12 for detecting the temperature of the indoor heat exchanger 3 connected so as to act as a condenser during heating, and the temperature detecting means 12 When the detected temperature exceeds the first predetermined value, the energization of the auxiliary heater 8 for heating is stopped, and when the detected temperature becomes the second predetermined value lower than the first predetermined value or less, the heater is released. It has an energization limiting means 13 and a timer for counting the time from when the heater energization limiting means 13 stops energizing the auxiliary heating heater 8 to when it is released.
When the timed time is longer than the predetermined time, the predetermined value changing means 15 for resetting the predetermined value for starting the energization stop and the predetermined value for releasing the energization stop, and the heating overload state of the compressor 1 are detected to detect the outdoor fan 7. The heating overload control means 11 for stopping the blowing of air is provided. Therefore, when the overload state is severe such that the energization stop time for the auxiliary heating heater 8 is long,
By the heater energization limiting means 13 resetting the temperature at which the energization of the auxiliary heating heater 8 is stopped to a low value, the energization of the auxiliary heating heater 8 is restricted earlier.
It is possible to obtain stable operation without the protection controls interfering with each other, and to give priority to the heat pump operation.
【００６１】次に、本発明による空気調和機の第３の実
施例について、図面を参照しながら説明する。なお、第
１、第２の実施例と同一構成については、同一符号を付
して詳細な説明は省略する。Next, a third embodiment of the air conditioner according to the present invention will be described with reference to the drawings. The same components as those in the first and second embodiments are designated by the same reference numerals and detailed description thereof will be omitted.
【００６２】図５は、本発明の第３の実施例による空気
調和機の構成図である。図６は、同実施例の動作を示す
フローチャートである。FIG. 5 is a block diagram of an air conditioner according to the third embodiment of the present invention. FIG. 6 is a flowchart showing the operation of the embodiment.
【００６３】図５において、１６はヒータ通電制限手段
１３が暖房用補助ヒータ８に対する通電制限をしていな
いときに暖房過負荷制御手段１１が圧縮機１の暖房過負
荷状態を検出し、室外送風機７を停止した場合、そのと
きに温度検出手段１２が検出した温度より所定値低い温
度をヒータ通電制限手段１３が暖房用補助ヒータ８に対
する通電停止を開始する第１の所定値として設定しなお
す所定値変更手段である。In FIG. 5, reference numeral 16 indicates the heating overload control means 11 detects the heating overload state of the compressor 1 when the heater energization restriction means 13 does not restrict the energization of the auxiliary heater 8 for heating, and the outdoor blower. When 7 is stopped, the temperature lower than the temperature detected by the temperature detecting means 12 at that time is reset by a predetermined value as the first predetermined value at which the heater energization limiting means 13 starts to stop energizing the auxiliary heater 8 for heating. It is a value changing means.
【００６４】以上のように構成された空気調和機につい
て、以下その動作を図６のフローチャートにもとづき説
明する。The operation of the air conditioner configured as described above will be described below with reference to the flowchart of FIG.
【００６５】ステップ２０において、室内側熱交換器３
の温度を検出し、ステップ３０へ進む。In step 20, the indoor heat exchanger 3
Temperature is detected, and the process proceeds to step 30.
【００６６】ステップ３０において、ヒータ通電制限手
段１３によって暖房用補助ヒータ８への通電が制限され
ているか否かを見る。ここで、制限されている（停止制
御中）ときはステップ５０へ進み、制限されていないと
きはステップ６０へ進む。In step 30, it is checked whether or not the heater energization limiting means 13 limits the energization of the auxiliary heating heater 8. Here, if restricted (during stop control), the process proceeds to step 50, and if not restricted, the process proceeds to step 60.
【００６７】ステップ６０において、暖房過負荷状態を
検出したか否かを判定し、検出したときはステップ６１
へ、検出していないときはステップ４１へ進む。In step 60, it is judged whether or not the heating overload state is detected, and when it is detected, step 61
If not, go to step 41.
【００６８】暖房過負荷状態を検出した場合、ステップ
６１において、暖房用補助ヒータ８への通電停止を開始
する温度（Ｔ１）をそのときの検出温度（Ｔｃ）よりも
所定値（例えば５℃）低い温度に設定し直し、ステップ
６２へ進む。When the heating overload condition is detected, in step 61, the temperature (T1) at which the energization of the auxiliary heater 8 for heating is started is a predetermined value (for example, 5 ° C.) higher than the detected temperature (Tc) at that time. Reset to a lower temperature and proceed to step 62.
【００６９】ステップ６２において、暖房用補助ヒータ
８への通電停止を解除する温度（Ｔ２）を開始温度（Ｔ
１）より所定値（例えば５℃）低い温度に設定し直し、
ステップ４２へ進む。In step 62, the temperature (T2) at which the power supply to the auxiliary heating heater 8 is released is set to the start temperature (T2).
Reset the temperature to a value lower than 1) by a predetermined value (for example, 5 ° C),
Go to step 42.
【００７０】ステップ４２において、暖房用補助ヒータ
８への通電を停止させ凝縮圧力の異常上昇を抑える。In step 42, the energization of the auxiliary heater 8 for heating is stopped to suppress the abnormal increase in the condensation pressure.
【００７１】また、ステップ６０において、過負荷状態
を検出していないときには、ステップ４１において、検
出温度（Ｔｃ）が所定値（Ｔ１）以上かを判定し、以上
のときはステップ４２へ進み、通電を停止する。When the overload condition is not detected in step 60, it is determined in step 41 whether the detected temperature (Tc) is equal to or higher than the predetermined value (T1). To stop.
【００７２】この通電制限を解除する場合は、ステップ
３０において、暖房用補助ヒータ８への通電が制限され
ているとき（停止制御中）、ステップ５０へ進む。To cancel the energization restriction, when the energization to the heating auxiliary heater 8 is restricted in step 30 (during stop control), the process proceeds to step 50.
【００７３】ステップ５０において、検出温度が所定値
（Ｔ２）以下かを判定し、以下のときはステップ５１へ
進む。At step 50, it is judged whether the detected temperature is equal to or lower than a predetermined value (T2).
【００７４】ステップ５１において、暖房用補助ヒータ
８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、暖房時、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３の温度を検出する温度検出手段
１２と、温度検出手段１２の検出温度が第１の所定値以
上になると暖房用補助ヒータ８への通電を停止させ、そ
の後、前記第１の所定値より第２の所定値だけ低くなる
と通電停止を解除するヒータ通電制限手段１３と、圧縮
機１の暖房過負荷状態を検出して室外側送風機７の送風
を停止させる暖房過負荷制御手段１１と、ヒータ通電制
限手段１３が暖房用補助ヒータ８に対する通電制限をし
ていないときに暖房過負荷制御手段１１が暖房過負荷状
態を検出し室外送風機７を停止した場合、そのときに温
度検出手段１２が検出した温度より所定値低い温度を前
記第１の所定値として設定しなおす所定値変更手段１６
とを備えているので、ヒートポンプ運転への制限が働く
前に暖房用補助ヒータ８への通電を制限するようにな
り、保護制御同士が干渉することがなく安定した運転を
得ることができるとともに、ヒートポンプ運転を優先す
ることができる。In step 51, the stop of energization to the auxiliary heating heater 8 is released. As described above, in the air conditioner of the present embodiment, the temperature detection unit 12 that detects the temperature of the indoor heat exchanger 3 that is connected to act as a condenser during heating, and the temperature detected by the temperature detection unit 12 Is equal to or larger than a first predetermined value, the energization to the heating auxiliary heater 8 is stopped, and thereafter, when the second predetermined value is lower than the first predetermined value, the stop of energization is released. Heating is performed when the heating overload control unit 11 that detects the heating overload state of the compressor 1 and stops the blowing of the outdoor blower 7 and the heater energization limiting unit 13 does not limit the energization of the auxiliary heating heater 8. When the overload control means 11 detects the heating overload state and stops the outdoor blower 7, a predetermined value lower than the temperature detected by the temperature detection means 12 at that time is reset as the first predetermined value. Change Stage 16
Since it is provided with, the power supply to the heating auxiliary heater 8 is restricted before the heat pump operation is restricted, and stable operation can be obtained without the protection controls interfering with each other. The heat pump operation can be prioritized.
【００７５】なお、本実施例において圧縮機１の暖房過
負荷状態の検出を圧力スイッチ１０によったが、圧縮機
１の運転電流を電流センサーや過電流継電器によって検
出してもよく、また、室内、外熱交換器の温度をサーミ
スタ等で検出してもよい。Although the heating overload state of the compressor 1 is detected by the pressure switch 10 in this embodiment, the operating current of the compressor 1 may be detected by a current sensor or an overcurrent relay. The temperatures of the indoor and outdoor heat exchangers may be detected by a thermistor or the like.
【００７６】[0076]
【発明の効果】以上説明したように本発明の空気調和機
は、暖房時、凝縮器として作用するように接続された室
内側熱交換器の温度を検出する温度検出手段と、前記温
度検出手段の検出温度が第１の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、所定時間経過
後、前記温度検出手段の検出温度が前記第１の所定値よ
り低い第２の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、圧縮機の暖房過負荷状態を検出し
て室外側送風機の送風を停止させる暖房過負荷制御手段
とを備えているので、一旦、前記暖房用補助ヒータへの
通電を停止させた後は所定時間通電を許さないので、保
護制御同士が干渉することがなく安定した運転を得るこ
とができる。As described above, in the air conditioner of the present invention, the temperature detecting means for detecting the temperature of the indoor heat exchanger connected so as to act as a condenser during heating, and the temperature detecting means. When the detected temperature of is equal to or higher than the first predetermined value, the energization of the auxiliary heater for heating is stopped, and after a lapse of a predetermined time, the detected temperature of the temperature detecting means is a second predetermined value lower than the first predetermined value. Since the heater energization limiting means for releasing the energization stop and the heating overload control means for detecting the heating overload state of the compressor and stopping the air blow of the outdoor blower are provided when Since the energization of the auxiliary heater is not allowed for a predetermined time after the energization of the auxiliary heater, the stable operation can be obtained without the protection controls interfering with each other.
【００７７】また、暖房時、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の温度を検出する温度検出
手段と、前記温度検出手段の前記検出温度が第１の所定
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、前記検出温度が前記第１の所定値より低い第２の所
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、前記ヒータ通電制限手段が、前記暖房用補助ヒー
タへの通電を停止させてから解除するまでの時間を計時
するタイマーを持ち、その計時時間が所定時間より長い
場合、前記通電停止開始所定値と通電停止解除所定値を
低く設定しなおす所定値変更手段と、圧縮機の暖房過負
荷状態を検出して室外側送風機の送風を停止させる暖房
過負荷制御手段とを備えているので、過負荷状態が厳し
いときにはより早目に前記暖房用補助ヒータへの通電を
制限するようになり、保護制御同士が干渉することがな
く安定した運転を得ることができるとともに、ヒートポ
ンプ運転を優先することができる。Further, during heating, when the temperature detecting means for detecting the temperature of the indoor heat exchanger connected so as to act as a condenser and the detected temperature of the temperature detecting means become equal to or higher than a first predetermined value. A heater energization limiting unit that suspends energization to the heating auxiliary heater and releases the energization stop when the detected temperature is equal to or lower than a second predetermined value lower than the first predetermined value; It has a timer that measures the time from when the power supply to the heating auxiliary heater is stopped to when it is released, and when the time is longer than a predetermined time, the power supply stop start predetermined value and the power supply stop release predetermined value are set low. Since it is provided with a predetermined value changing means for changing over again and a heating overload control means for detecting the heating overload state of the compressor and stopping the air blow of the outdoor blower, it is possible to perform more quickly when the overload state is severe. The now limiting the power supply to the heating auxiliary heater, it is possible to obtain a stable operation without protection control each other interference, it is possible to preferentially heat pump operation to.
【００７８】また、さらに、暖房時、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の温度を検出する
温度検出手段と、前記温度検出手段の検出温度が第１の
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、その後、前記第１の所定値より第２の所定値だ
け低くなると通電停止を解除するヒータ通電制限手段
と、圧縮機の暖房過負荷状態を検出して室外側送風機の
送風を停止させる暖房過負荷制御手段と、前記ヒータ通
電制限手段が前記暖房用補助ヒータに対する通電制限を
していないときに前記暖房過負荷制御手段が暖房過負荷
状態を検出し、前記室外送風機を停止した場合、そのと
きに前記温度検出手段が検出した温度より所定値低い温
度を前記第１の所定値として設定しなおす所定値変更手
段とを備えているので、ヒートポンプ運転への制限が働
く前に暖房用補助ヒータへの通電を制限するようにな
り、保護制御同士が干渉することがなく安定した運転を
得ることができるとともに、ヒートポンプ運転を優先す
ることができる。Further, during heating, the temperature detecting means for detecting the temperature of the indoor heat exchanger connected so as to act as a condenser, and the temperature detected by the temperature detecting means are equal to or higher than a first predetermined value. In this case, the energization of the auxiliary heater for heating is stopped, and thereafter, the energization limiting means for canceling the stop of energization when the value becomes lower than the first predetermined value by the second predetermined value, and the heating overload state of the compressor is detected. The heating overload control means for stopping the air blow of the outdoor blower and the heating overload control means detects the heating overload state when the heater energization limiting means does not limit the energization of the auxiliary heater for heating. However, when the outdoor blower is stopped, a predetermined value changing means for resetting a temperature lower than the temperature detected by the temperature detecting means by a predetermined value as the first predetermined value is provided. The power supply to the heating auxiliary heater is restricted before the heat pump operation is restricted, stable operation can be obtained without interference between protection controls, and heat pump operation can be prioritized. it can.
【図１】本発明による空気調和機の第１の実施例におけ
る構成図FIG. 1 is a configuration diagram of a first embodiment of an air conditioner according to 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】本発明による空気調和機の第２の実施例におけ
る構成図FIG. 3 is a configuration diagram of an air conditioner according to a second embodiment of the present invention.
【図４】同実施例の動作を示すフローチャートFIG. 4 is a flowchart showing the operation of the embodiment.
【図５】本発明による空気調和機の第３の実施例におけ
る構成図FIG. 5 is a configuration diagram of an air conditioner according to a third embodiment of the present invention.
【図６】同実施例の動作を示すフローチャートFIG. 6 is a flowchart showing the operation of the embodiment.
【図７】従来の空気調和機の構成図FIG. 7 is a block diagram of a conventional air conditioner.
１ 圧縮機 ３ 室内側熱交換器 ５ 室外側熱交換器 ７ 室外側送風機 ８ 暖房用補助ヒータ １１ 暖房過負荷制御手段 １２ 温度検出手段 １３ ヒータ通電制限手段 １４ ヒータ通電制限手段 １５ 所定値変更手段 １６ 所定値変更手段 1 Compressor 3 Indoor Heat Exchanger 5 Outdoor Heat Exchanger 7 Outdoor Air Blower 8 Heating Auxiliary Heater 11 Heating Overload Control Means 12 Temperature Detection Means 13 Heater Energization Limiting Means 14 Heater Energization Limiting Means 15 Predetermined Value Changing Means 16 Predetermined value changing means
Claims (3)
側熱交換器近傍に配された室外側送風機と、前記圧縮機
及び前記室外側熱交換器と冷媒流路を介して、暖房時、
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、前記室内側熱交換器に対し熱交換空気の風上側に配
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、前記温度検出手段の検出温度
が第１の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、所定時間経過後、前記温度検出手段の
検出温度が前記第１の所定値より低い第２の所定値以下
になると通電停止を解除するヒータ通電制限手段と、前
記圧縮機の暖房過負荷状態を検出して前記室外側送風機
の送風を停止させる暖房過負荷制御手段とを備えた空気
調和機。1. A compressor, an outdoor heat exchanger, an outdoor blower arranged near the outdoor heat exchanger, the compressor, the outdoor heat exchanger, and a refrigerant flow path, When heating,
An indoor heat exchanger connected to act as a condenser, a heating auxiliary heater arranged on the windward side of heat exchange air with respect to the indoor heat exchanger, and the temperature of the indoor heat exchanger are detected. Temperature detecting means, and when the temperature detected by the temperature detecting means becomes equal to or more than a first predetermined value, the energization of the auxiliary heater for heating is stopped, and after a predetermined time elapses, the temperature detected by the temperature detecting means becomes the first temperature. Heater energization restricting means for releasing the energization stop when the value becomes equal to or less than a second predetermined value lower than the predetermined value, and heating overload control means for detecting the heating overload state of the compressor and stopping the air blow of the outdoor blower. An air conditioner equipped with.
側熱交換器近傍に配された室外側送風機と、前記圧縮機
及び前記室外側熱交換器と冷媒流路を介して、暖房時、
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、前記室内側熱交換器に対し熱交換空気の風上側に配
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、前記温度検出手段の検出温度
が第１の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、前記温度検出手段の検出温度が前記第
１の所定値より低い第２の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、前記ヒータ通電制限
手段が、前記暖房用補助ヒータへの通電を停止させてか
ら解除するまでの時間を計時するタイマーを持ち、その
計時時間が所定時間より長い場合、前記通電停止開始所
定値と通電停止解除所定値を低く設定しなおす所定値変
更手段と、前記圧縮機の暖房過負荷状態を検出して前記
室外側送風機の送風を停止させる暖房過負荷制御手段と
を備えた空気調和機。2. A compressor, an outdoor heat exchanger, an outdoor blower arranged near the outdoor heat exchanger, the compressor, the outdoor heat exchanger, and a refrigerant flow path, When heating,
An indoor heat exchanger connected to act as a condenser, a heating auxiliary heater arranged on the windward side of heat exchange air with respect to the indoor heat exchanger, and the temperature of the indoor heat exchanger are detected. Temperature detecting means, and when the temperature detected by the temperature detecting means exceeds a first predetermined value, the auxiliary heater for heating is stopped from being energized, and the temperature detected by the temperature detecting means is lower than the first predetermined value. It has a heater energization limiting means for releasing the de-energization when the value becomes equal to or less than the second predetermined value, and a timer for counting the time from the de-energizing of the auxiliary heating heater to the de-energizing If the measured time is longer than a predetermined time, the predetermined value changing means for resetting the predetermined value for starting energization stop and the predetermined value for canceling energization stop, and the outdoor blower by detecting a heating overload state of the compressor Sending Air conditioner having a heating overload controlling means for stopping.
側熱交換器近傍に配された室外側送風機と、前記圧縮機
及び前記室外側熱交換器と冷媒流路を介して、暖房時、
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、前記室内側熱交換器に対し熱交換空気の風上側に配
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、前記温度検出手段の検出温度
が第１の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、その後、前記第１の所定値より第２の
所定値だけ低くなると通電停止を解除するヒータ通電制
限手段と、前記圧縮機の暖房過負荷状態を検出して前記
室外側送風機の送風を停止させる暖房過負荷制御手段
と、前記ヒータ通電制限手段が前記暖房用補助ヒータに
対する通電制限をしていないときに前記暖房過負荷制御
手段が暖房過負荷状態を検出し、前記室外送風機を停止
した場合、そのときに前記温度検出手段が検出した温度
より所定値低い温度を前記第１の所定値として設定しな
おす所定値変更手段とを備えた空気調和機。3. A compressor, an outdoor heat exchanger, an outdoor blower disposed near the outdoor heat exchanger, the compressor, the outdoor heat exchanger, and a refrigerant flow path, When heating,
An indoor heat exchanger connected to act as a condenser, a heating auxiliary heater arranged on the windward side of heat exchange air with respect to the indoor heat exchanger, and the temperature of the indoor heat exchanger are detected. And the temperature detection means for controlling the temperature detection means to stop energizing the auxiliary heater for heating when the temperature detected by the temperature detection means becomes equal to or higher than a first predetermined value, and then lowers the first predetermined value by a second predetermined value. Then, the heater energization limiting means for releasing the energization stop, the heating overload control means for detecting the heating overload state of the compressor and stopping the ventilation of the outdoor blower, and the heater energization limiting means for the heating auxiliary. When the heating overload control means detects the heating overload state when the heater is not energized and the outdoor blower is stopped, a temperature lower than the temperature detected by the temperature detection means by a predetermined value at that time. Air conditioner having a predetermined value changing means for resetting the first predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5173104A JPH0727392A (en) | 1993-07-13 | 1993-07-13 | Air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5173104A JPH0727392A (en) | 1993-07-13 | 1993-07-13 | Air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0727392A true JPH0727392A (en) | 1995-01-27 |
Family
ID=15954247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5173104A Pending JPH0727392A (en) | 1993-07-13 | 1993-07-13 | Air-conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0727392A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106524416A (en) * | 2016-11-14 | 2017-03-22 | 广东美的暖通设备有限公司 | Air-conditioner, air supply device and electrically-assisted heating control method of air-conditioner |
-
1993
- 1993-07-13 JP JP5173104A patent/JPH0727392A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106524416A (en) * | 2016-11-14 | 2017-03-22 | 广东美的暖通设备有限公司 | Air-conditioner, air supply device and electrically-assisted heating control method of air-conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2007333370A (en) | Air conditioner and control method thereof | |
| CN110440412A (en) | A kind of control method, control system and the air conditioner of compressor heat tape | |
| JP4290480B2 (en) | Temperature control method | |
| JPH08261542A (en) | Air conditioner | |
| JP2557909B2 (en) | Refrigerant heating type air conditioner | |
| JP2002174450A (en) | Air-conditioning device | |
| JPH0727392A (en) | Air-conditioner | |
| JPH04190062A (en) | Freezing-cycle control device for air-conditioner | |
| JPH09159293A (en) | Compressor protection controller for air conditioner | |
| KR100565995B1 (en) | Method for Operating of Multi Type Air-conditioner by Install Position of Indoor-unit | |
| JPH07234044A (en) | Controlling device for protecting compressor of air conditioner | |
| JP4211122B2 (en) | Air conditioner | |
| JP2000097510A (en) | Refrigerant heating type air conditioner | |
| JPH08261543A (en) | Air conditioner | |
| JP3526393B2 (en) | Air conditioner | |
| JPS5913548Y2 (en) | Air conditioner operation control device | |
| JPH0634224A (en) | Room heater/cooler | |
| JP2839347B2 (en) | Air conditioner | |
| JPH06288599A (en) | Air conditioner | |
| JP2504424B2 (en) | Refrigeration cycle | |
| JPH03152331A (en) | Heater over-heating protection control device for air conditioner | |
| JP4404420B2 (en) | Air conditioner control device | |
| JPH0678839B2 (en) | Air conditioner | |
| JPS618544A (en) | Apparatus for controlling blower in air conditioner | |
| JPH09264590A (en) | Air conditioner |