JP2003028485A - Air supply controller of air conditioner - Google Patents

Air supply controller of air conditioner

Info

Publication number
JP2003028485A
JP2003028485A JP2001214699A JP2001214699A JP2003028485A JP 2003028485 A JP2003028485 A JP 2003028485A JP 2001214699 A JP2001214699 A JP 2001214699A JP 2001214699 A JP2001214699 A JP 2001214699A JP 2003028485 A JP2003028485 A JP 2003028485A
Authority
JP
Japan
Prior art keywords
current value
heat exchanger
indoor
rotation speed
speed
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
Application number
JP2001214699A
Other languages
Japanese (ja)
Inventor
Takao Sakagami
隆雄 阪上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Funai Electric Co Ltd
Original Assignee
Funai Electric Co Ltd
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 Funai Electric Co Ltd filed Critical Funai Electric Co Ltd
Priority to JP2001214699A priority Critical patent/JP2003028485A/en
Publication of JP2003028485A publication Critical patent/JP2003028485A/en
Pending legal-status Critical Current

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Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

  • Air Conditioning Control Device (AREA)

Abstract

PROBLEM TO BE SOLVED: To control the r.p.m. of a fan motor in each operation mode to a design target value, i.e., an optimal r.p.m., at the time of normal operation and to control the r.p.m. in low speed operation mode (L) higher than the r.p.m. at the time of normal operation by a specified amount so that a lower limit r.p.m. can be ensured only at the time of power reduction. SOLUTION: At the time of heating operation, an operation control section 22 monitors the drive current value being measured at a current value measuring section 23 constantly and when the measured drive current value is not higher than a first reference current value indicative of the initial overload operating state of a refrigerant compressor 1, r.p.m. of an indoor side fan 31 at the time of low speed operation and intermediate speed operation is controlled by an appropriate r.p.m. at the time of normal operation. Only when the measured drive current value exceeds the first reference current value, r.p.m. of an indoor side fan 31 at the time of low speed operation and intermediate speed operation is controlled by the r.p.m. for power reduction.

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】本発明は、冷媒圧縮機と、室
内側ファンと、室内側熱交換機と、室外側ファンと、室
外側熱交換機と、室内側熱交換機と室外側熱交換機との
間に介挿される減圧機と、冷媒圧縮機と室内側熱交換機
又は室外側熱交換機との接続を切り換える四方弁とで形
成される冷凍サイクルを備えた空気調和機に係り、より
詳細には、減電時における空気調和機の送風制御装置に
関する。TECHNICAL FIELD The present invention relates to a refrigerant compressor, an indoor fan, an indoor heat exchanger, an outdoor fan, an outdoor heat exchanger, an indoor heat exchanger, and an outdoor heat exchanger. More specifically, the present invention relates to an air conditioner having a refrigeration cycle formed of a pressure reducer interposed between a refrigerant compressor and a refrigerant compressor and a four-way valve that switches connection between an indoor heat exchanger and an outdoor heat exchanger. The present invention relates to a blower control device for an air conditioner when electricity is applied.

【０００２】[0002]

【従来の技術】従来の空気調和機は、四方弁を切り換え
ることにより、冷房運転時には、圧縮機で圧縮された冷
媒を、四方弁、室外側熱交換機、減圧機、室内側熱交換
機、四方弁の経路を経て再び圧縮機に循環させ、暖房運
転時には、圧縮機で圧縮された冷媒を、四方弁、室内側
熱交換機、減圧機、室外側熱交換機、四方弁の経路を経
て再び圧縮機に循環させている。2. Description of the Related Art In a conventional air conditioner, by switching the four-way valve, the refrigerant compressed by the compressor is supplied to the four-way valve, the outdoor heat exchanger, the pressure reducer, the indoor heat exchanger, and the four-way valve during the cooling operation. Circulates again to the compressor via the route of, and during heating operation, the refrigerant compressed by the compressor returns to the compressor via the route of the four-way valve, the indoor heat exchanger, the pressure reducer, the outdoor heat exchanger, and the four-way valve. Circulating.

【０００３】ところで、このような空気調和機において
は、電源電圧（商用電源）の電圧変動によって室内側フ
ァンの回転数（すなわち、風量）が変動しないように種
々の制御が工夫されている。By the way, in such an air conditioner, various controls have been devised so that the rotation speed (ie, air volume) of the indoor fan does not fluctuate due to fluctuations in the power supply voltage (commercial power supply).

【０００４】例えば、特許第２６０６４５８号公報に記
載の空気調和機の風量制御装置は、送風機用モータの回
転数を検出する送風機用モータ回転数検出部を備えてお
り、送風機用モータ運転指令部に指令を出力する制御部
は、機内抵抗が変化した場合には、送風機用モータ回転
数検出部が検出したモータ回転数の変化に基づいて、風
量を一定に保つための指令を送風機用モータ運転指令部
に出力し、電源電圧が低下した場合には、電圧変動に対
するモータの回転数の変化を補正する指令を送風機用モ
ータ運転指令部に出力するようになっている。For example, the air volume control device for an air conditioner described in Japanese Patent No. 2606458 includes a blower motor rotation speed detection unit for detecting the rotation speed of a blower motor, and a blower motor operation command unit is provided. When the internal resistance changes, the control unit that outputs the command issues a command to keep the air volume constant based on the change in the motor rotation speed detected by the fan motor rotation speed detection unit. When the power supply voltage drops, a command for correcting the change in the motor rotation speed due to the voltage fluctuation is output to the blower motor operation command unit.

【０００５】また、特開平４−２０３４９５号公報に記
載の室内ファンモータの制御方法は、ファンを備えた誘
導電動機の回転により発生するパルスを所定時間ごとに
カウントすることにより誘導電動機の回転数を検出し、
その検出回転数と設定回転数とを比較し、誘導電動機の
回転数を段階的に位相制御する室内ファンモータの制御
方法であって、設定回転数ごとに印加電圧の最小値を設
定し、室内ファンモータの負荷変動時に所定の設定回転
数に対応する印加電圧最小値を印加することにより、風
量の低下を防止する構成となっている。Further, in the method of controlling an indoor fan motor disclosed in Japanese Patent Laid-Open No. 4-203495, the number of rotations of the induction motor is counted by counting the pulses generated by the rotation of the induction motor equipped with a fan every predetermined time. Detect and
A method for controlling an indoor fan motor that compares the detected rotation speed with a set rotation speed and phase-controls the rotation speed of the induction motor, in which the minimum value of the applied voltage is set for each set rotation speed. By applying a minimum value of the applied voltage corresponding to a predetermined set rotation speed when the load of the fan motor changes, it is configured to prevent a decrease in the air volume.

【０００６】これらの空気調和機は、いずれも室内側フ
ァンを駆動するファンモータ（送風機用モータ、誘導電
動機）に、モータの回転数を検出できるホール素子等の
回転数検出手段を備えている。そして、この回転数検出
手段によって検出される回転数に基づいて、室内側ファ
ンの回転数を直接制御するようになっている。In all of these air conditioners, a fan motor (blower motor, induction motor) for driving an indoor fan is provided with a rotation speed detecting means such as a hall element capable of detecting the rotation speed of the motor. Then, the rotation speed of the indoor fan is directly controlled based on the rotation speed detected by the rotation speed detection means.

【０００７】つまり、これらの従来技術は、冷媒圧縮機
が一定速度で回転され、かつ、室内側ファンを駆動する
ファンモータがホール素子等の回転数検出機能を有しな
い空気調和機には適用できない技術となっている。That is, these prior arts cannot be applied to an air conditioner in which a refrigerant compressor is rotated at a constant speed and a fan motor for driving an indoor fan does not have a rotation speed detecting function such as a hall element. It has become a technology.

【０００８】そのため、このような冷媒圧縮機が一定速
度で回転され、かつ、室内側ファンを駆動するファンモ
ータがホール素子等の回転数検出機能を有しない従来の
空気調和機では、ファンモータの回転数を直接検出して
制御することができないため、商用電源の電圧が低下す
る減電時を想定して、予めファンモータの回転数を高め
に設定しておくといった手段が採用されている。Therefore, in the conventional air conditioner in which such a refrigerant compressor is rotated at a constant speed, and the fan motor for driving the indoor fan does not have a rotation speed detecting function such as a hall element, Since it is not possible to directly detect and control the rotation speed, a means has been adopted in which the rotation speed of the fan motor is set to a high value in advance in consideration of power reduction when the voltage of the commercial power supply drops.

【０００９】すなわち、暖房運転時、商用電源の電圧が
低下して室内側ファンの回転数がある一定の回転数（例
えば、９００ｒｐｍ等）以下に落ちると、室内側熱交換
機のところで十分な熱交換が行なわれず、その結果、冷
媒圧縮機の負荷が大きくなって過負荷運転状態となる。
そのため、この過負荷運転状態を極力回避すべく、減電
時に室内側ファンの低速運転モード（Ｌ）での回転数が
落ちたとしても、９００ｒｐｍを確保できるように、予
めファンモータの回転数を高め（例えば、１０００ｒｐ
ｍ）に設定している。That is, during the heating operation, when the voltage of the commercial power supply drops and the rotation speed of the indoor fan drops below a certain rotation speed (for example, 900 rpm), sufficient heat exchange occurs at the indoor heat exchanger. Is not performed, and as a result, the load on the refrigerant compressor is increased and an overload operation state is set.
Therefore, in order to avoid this overload operation state as much as possible, even if the rotation speed of the indoor fan in the low speed operation mode (L) drops at the time of power reduction, the rotation speed of the fan motor is set in advance so that 900 rpm can be secured. Higher (eg 1000 rp
m).

【００１０】図３（ａ）は、商用電源が例えば９０Ｖに
低下した場合の減電時を想定して設定された、室内側フ
ァンの各運転モード（Ｈ、Ｍ、Ｌ）での回転数の一例を
示している。因みに、図３（ｂ）は、１００Ｖの商用電
源が供給されている正常運転時の室内側ファンの各運転
モードで設定される回転数の一例を示している。FIG. 3A shows the number of revolutions of the indoor fan in each operation mode (H, M, L), which is set on the assumption that the commercial power source is reduced to 90V when the power is reduced. An example is shown. Incidentally, FIG.3 (b) has shown an example of the rotation speed set in each operation mode of the indoor side fan at the time of normal operation to which the commercial power supply of 100V is supplied.

【００１１】すなわち、室内側ファンは、減電時を想定
して、高速運転モード（Ｈ）のとき１３００ｒｐｍ、中
速運転モード（Ｍ）のとき１１５０ｒｐｍ、低速運転モ
ード（Ｌ）のとき１０００ｒｐｍに設定される。一方、
正常運転時は、高速運転モード（Ｈ）のとき１３００ｒ
ｐｍ、中速運転モード（Ｍ）のとき１１００ｒｐｍ、低
速運転モード（Ｌ）のとき９００ｒｐｍとなっている。That is, the indoor fan is set to 1300 rpm in the high-speed operation mode (H), 1150 rpm in the medium-speed operation mode (M), and 1000 rpm in the low-speed operation mode (L), assuming the time of power reduction. To be done. on the other hand,
In normal operation, 1300r in high speed operation mode (H)
pm, 1100 rpm in the medium speed operation mode (M), and 900 rpm in the low speed operation mode (L).

【００１２】すなわち、図３（ａ）に示す各回転数の設
定は、減電時を想定した回転数であり、減電時に室内側
ファンの回転数が落ちたとしても、中速運転モード
（Ｍ）のとき１０００ｒｐｍ、低速運転モード（Ｌ）の
とき９００ｒｐｍが実質的に確保できる設定となってい
る。That is, the setting of each rotation speed shown in FIG. 3 (a) is a rotation speed assuming a power reduction, and even if the rotation speed of the indoor fan drops during the power reduction, the medium speed operation mode ( The setting is such that 1000 rpm in M) and 900 rpm in the low speed operation mode (L) can be substantially secured.

【００１３】[0013]

【発明が解決しようとする課題】一方、このような減電
時を想定した設定において、逆に商用電源の電圧が上昇
（例えば、１１０Ｖ等に上昇）した場合、図３（ａ）に
示す減電時の設定が、例えば中速運転モード（Ｍ）では
１２００ｒｐｍ、低速運転モード（Ｌ）では１１５０ｒ
ｐｍに実質的に上昇し、Ｈ、Ｍ、Ｌの各運転モードでの
回転数の差が縮小することになる。On the other hand, when the voltage of the commercial power source rises (for example, rises to 110V or the like) on the contrary in such a setting for reducing the power consumption, the reduction shown in FIG. When the power is set, for example, the medium speed operation mode (M) is 1200 rpm, and the low speed operation mode (L) is 1150 r.
This substantially increases to pm, and the difference in the number of rotations in each of the H, M, and L operation modes is reduced.

【００１４】そのため、使用者にとっては、リモコン等
を操作して運転モードを例えば中速運転モード（Ｍ）か
ら低速運転モード（Ｌ）に切り替えたにも係わらず、室
内側ファンの回転数、つまり吹き出す風量が体感上ほと
んど変わっていないように感じることになる。同様に、
リモコン等を操作して運転モードを低速運転モード
（Ｌ）から中速運転モード（Ｍ）に切り替えた場合も、
室内側ファンの回転数、つまり吹き出す風量が体感上は
ほとんど変わっていないように感じることになる。その
ため、空気調和機の風量制御が故障しているかのような
錯覚を使用者に与えてしまうといった問題があった。Therefore, for the user, although the operation mode is switched from the medium speed operation mode (M) to the low speed operation mode (L) by operating the remote controller or the like, the rotation speed of the indoor fan, that is, You will feel that the amount of air blown out is almost the same. Similarly,
Even when the operation mode is switched from the low speed operation mode (L) to the medium speed operation mode (M) by operating the remote controller or the like,
The number of rotations of the indoor fan, that is, the amount of air blown out, feels almost unchanged. Therefore, there is a problem that the user is given an illusion that the airflow control of the air conditioner is out of order.

【００１５】また、めったに発生しない減電時を想定し
て、中速運転モード（Ｍ）や低速運転モード（Ｌ）の回
転数を予め高めに設定しておくことは、省エネの観点か
らも好ましくないといった問題もあった。It is also preferable from the viewpoint of energy saving to set a high rotation speed in the medium speed operation mode (M) and the low speed operation mode (L) in advance, assuming a power reduction which rarely occurs. There was also the problem of not having it.

【００１６】本発明はかかる問題点を解決すべく創案さ
れたもので、その目的は、正常運転時は各運転モード
（Ｈ、Ｍ、Ｌ）でのファンモータの回転数を設計目標値
である適正回転数で制御し、減電時のみ、最低限の回転
数が確保できるように、低速運転モード（Ｌ）での回転
数を正常運転時の回転数より一定数だけ高くなるように
制御することにより、減電時の過負荷運転状態への移行
を極力抑えるとともに、正常運転時および減電時の双方
においてファンモータの回転数を適正な比率で制御でき
るようにした空気調和機の送風制御装置を提供すること
にある。The present invention was devised to solve such a problem, and its purpose is to design the fan motor rotation speed in each operation mode (H, M, L) during normal operation as a design target value. Control at an appropriate number of revolutions, and control so that the number of revolutions in low-speed operation mode (L) is higher than the number of revolutions during normal operation by a certain number so that the minimum number of revolutions can be ensured only when power is reduced. As a result, the transition to the overload operation state at the time of power reduction is suppressed as much as possible, and the fan motor rotation speed can be controlled at an appropriate ratio during both normal operation and power reduction. To provide a device.

【００１７】[0017]

【課題を解決するための手段】本発明の空気調和機の送
風制御装置は、冷媒圧縮機と、室内側ファンと、室内側
熱交換機と、室外側ファンと、室外側熱交換機と、前記
室内側熱交換機と前記室外側熱交換機との間に介挿され
る減圧機と、前記冷媒圧縮機と前記室内側熱交換機又は
前記室外側熱交換機との接続を切り換える四方弁とで形
成される冷凍サイクルを備えるとともに、前記冷媒圧縮
機が一定速度で回転され、かつ、前記室内側ファンを駆
動するファンモータが回転数検出機能を有しない構成の
空気調和機であって、前記冷凍サイクルの運転を制御す
る運転制御手段は、減電時を考慮して、室内側ファンの
低速運転時および中速回転時の回転数を正常運転時の適
正回転数よりそれぞれ一定数だけ高くした減電対応回転
数にて制御する構成の空気調和機の室内送風制御装置に
おいて、前記冷媒圧縮機の駆動電流値を計測する電流値
計測手段を備え、暖房運転時、前記運転制御手段は、前
記電流値計測手段の計測する駆動電流値を常に監視し、
計測される駆動電流値が前記冷媒圧縮機の初期の過負荷
運転状態を示す第１基準電流値以下である場合には、前
記室内側ファンの低速運転時および中速回転時の回転数
を過負荷運転状態でない前記正常運転時の適正回転数で
それぞれ制御し、計測される駆動電流値が前記第１基準
電流値を超えた場合にのみ、前記室内側ファンの低速運
転時および中速回転時の回転数を前記それぞれの減電対
応回転数にて制御し、計測される駆動電流値が前記第１
基準電流値よりも高めに設定された第２基準電流値を超
えた場合には、前記室外側ファンの回転を停止すること
を特徴とする。A blower control device for an air conditioner according to the present invention comprises a refrigerant compressor, an indoor fan, an indoor heat exchanger, an outdoor fan, an outdoor heat exchanger, and the indoor unit. A refrigeration cycle formed by a pressure reducer inserted between an inner heat exchanger and the outdoor heat exchanger, and a four-way valve that switches the connection between the refrigerant compressor and the indoor heat exchanger or the outdoor heat exchanger. An air conditioner having a configuration in which the refrigerant compressor is rotated at a constant speed and a fan motor that drives the indoor fan does not have a rotation speed detection function, and controls the operation of the refrigeration cycle. In consideration of the time of power reduction, the operation control means to adjust the rotation speed of the indoor fan during low-speed operation and middle-speed rotation to a power-reduction-compatible rotation speed that is higher than the appropriate rotation speed during normal operation by a certain number. Structure to control In the indoor blower control device of the air conditioner, the current value measuring means for measuring the drive current value of the refrigerant compressor is provided, and during the heating operation, the operation control means, the drive current value measured by the current value measuring means. Constantly monitor,
When the measured drive current value is less than or equal to the first reference current value indicating the initial overload operation state of the refrigerant compressor, the rotation speed of the indoor fan during low speed operation and medium speed rotation is exceeded. Only when the measured drive current value exceeds the first reference current value, which is controlled by the proper rotation speed during the normal operation that is not in the load operation state, during the low speed operation and the middle speed rotation of the indoor fan The rotation speed of each is controlled by the rotation speed corresponding to each of the power reduction, and the measured drive current value is the first
When the second reference current value set higher than the reference current value is exceeded, the rotation of the outdoor fan is stopped.

【００１８】このような特徴を有する本発明によれば、
暖房運転時、運転制御手段は、電流値計測手段により計
測される駆動電流値が第１基準電流値以下である場合に
は、室内側ファンの低速運転時および中速回転時の回転
数を正常運転時の適正回転数でそれぞれ制御し、電流値
計測手段により計測される駆動電流値が第１基準電流値
を超えた場合にのみ、室内側ファンの低速運転時および
中速回転時の回転数をそれぞれの減電対応回転数にて制
御するように構成している。これにより、めったに発生
しない減電時を想定して、中速運転時や低速運転時の回
転数を予め高めに設定しておく従来の場合に比べて、省
エネを促進することができる。According to the present invention having such characteristics,
During the heating operation, the operation control unit normalizes the rotation speed of the indoor fan during low speed operation and medium speed rotation when the drive current value measured by the current value measurement unit is equal to or less than the first reference current value. Only when the drive current value measured by the current value measuring means is controlled by the proper rotation speed during operation and exceeds the first reference current value, the rotation speed during low speed operation and medium speed rotation of the indoor fan Is configured to be controlled by each rotation speed corresponding to the power reduction. As a result, energy saving can be promoted as compared with the conventional case in which the number of revolutions during medium-speed operation or low-speed operation is set to a high value in advance, assuming a power reduction that rarely occurs.

【００１９】また、運転制御手段は、電流値計測手段に
より計測される駆動電流値が第１基準電流値を超えた場
合にのみ、室内側ファンの低速運転時および中速回転時
の回転数をそれぞれの減電対応回転数にて制御するよう
に構成している。これにより、商用電源の電圧が低下す
る減電時に、冷媒圧縮機が過負荷運転状態となることを
事前に回避することが可能になるとともに、正常運転時
および減電時の双方においてファンモータの各運転モー
ド（Ｈ、Ｍ、Ｌ）における回転数を適正な比率で制御す
ることができる。そのため、減電時においても、低速運
転時と中速運転時の風量を適正に制御できるので、空気
調和機の風量制御が故障しているかのような錯覚を使用
者に与えてしまうといった従来の不具合を解消すること
ができる。Further, the operation control means determines the rotational speed of the indoor fan during low speed operation and medium speed rotation only when the drive current value measured by the current value measuring means exceeds the first reference current value. It is configured to control at each rotation speed corresponding to power reduction. This makes it possible to prevent the refrigerant compressor from entering the overload operation state in advance at the time of power reduction when the voltage of the commercial power supply drops, and also to prevent the fan motor from operating during normal operation and power reduction. The rotation speed in each operation mode (H, M, L) can be controlled at an appropriate ratio. Therefore, even when the power is reduced, the air volume during low-speed operation and during medium-speed operation can be appropriately controlled, which gives the user the illusion that the air volume control of the air conditioner is out of order. Problems can be resolved.

【００２０】また、減電対応回転数にて制御を行なって
もなおかつ過負荷運転状態が継続し、電流値計測手段に
より計測される駆動電流値が第２基準電流値を超えた場
合には、室外側ファンの回転を停止するように構成した
ので、過負荷運転状態をより確実に回避して、早期に正
常運転状態に復帰することが可能となる。Further, when the overload operation state continues even when the control is performed at the rotation speed corresponding to the power reduction and the drive current value measured by the current value measuring means exceeds the second reference current value, Since the configuration is such that the rotation of the outdoor fan is stopped, it is possible to more reliably avoid the overload operation state and quickly return to the normal operation state.

【００２１】また、本発明の空気調和機の送風制御装置
は、冷媒圧縮機と、室内側ファンと、室内側熱交換機
と、室外側ファンと、室外側熱交換機と、前記室内側熱
交換機と前記室外側熱交換機との間に介挿される減圧機
と、前記冷媒圧縮機と前記室内側熱交換機又は前記室外
側熱交換機との接続を切り換える四方弁とで形成される
冷凍サイクルを備えるとともに、前記冷媒圧縮機が一定
速度で回転され、かつ、前記室内側ファンを駆動するフ
ァンモータが回転数検出機能を有しない構成の空気調和
機において、前記冷媒圧縮機の駆動電流値を計測する電
流値計測手段と、前記室内側ファンの運転を制御する運
転制御手段とを備え、暖房運転時、前記運転制御手段
は、前記電流値計測手段の計測する駆動電流値を常に監
視し、計測される駆動電流値が、前記冷媒圧縮機の過負
荷運転状態を示す第１基準電流値を超えた場合には、前
記室内側ファンの低速運転時の回転数を過負荷運転状態
でない正常運転時の適正回転数から一定数だけ上げた減
電対応回転数にて制御することを特徴とする。Further, the air conditioner air blow control device of the present invention includes a refrigerant compressor, an indoor fan, an indoor heat exchanger, an outdoor fan, an outdoor heat exchanger, and the indoor heat exchanger. A decompressor inserted between the outdoor heat exchanger and a refrigeration cycle formed by a four-way valve that switches connection between the refrigerant compressor and the indoor heat exchanger or the outdoor heat exchanger, In the air conditioner configured such that the refrigerant compressor is rotated at a constant speed, and the fan motor that drives the indoor fan does not have a rotation speed detection function, a current value that measures a drive current value of the refrigerant compressor. A measurement unit and an operation control unit that controls the operation of the indoor fan are provided. During heating operation, the operation control unit constantly monitors the drive current value measured by the current value measurement unit, and the measured drive When the flow value exceeds the first reference current value indicating the overloaded operation state of the refrigerant compressor, the rotation speed of the indoor fan during low speed operation is set to the proper rotation during normal operation that is not overloaded. It is characterized in that it is controlled by the number of rotations corresponding to the power reduction that is increased by a fixed number from the number.

【００２２】このような特徴を有する本発明によれば、
暖房運転時、運転制御手段は、電流値計測手段により計
測される駆動電流値が、冷媒圧縮機の過負荷運転状態を
示す第１基準電流値を超えた場合には、室内側ファンの
低速運転時の回転数を過負荷運転状態でない正常運転時
の適正回転数から一定数だけ上げた減電対応回転数にて
制御する構成としている。これにより、商用電源の電圧
が低下する減電時に、冷媒圧縮機が過負荷運転状態とな
ることを事前に回避することが可能となる。According to the present invention having such characteristics,
During the heating operation, the operation control means, when the drive current value measured by the current value measuring means exceeds the first reference current value indicating the overload operation state of the refrigerant compressor, the indoor fan operates at low speed. The rotation speed at this time is controlled by a rotation speed corresponding to power reduction which is increased by a fixed number from the appropriate rotation speed during normal operation that is not in the overload operation state. As a result, it is possible to prevent the refrigerant compressor from entering the overload operation state in advance at the time of power reduction when the voltage of the commercial power supply drops.

【００２３】また、本発明の空気調和機の送風制御装置
は、冷媒圧縮機と、室内側ファンと、室内側熱交換機
と、室外側ファンと、室外側熱交換機と、前記室内側熱
交換機と前記室外側熱交換機との間に介挿される減圧機
と、前記冷媒圧縮機と前記室内側熱交換機又は前記室外
側熱交換機との接続を切り換える四方弁とで形成される
冷凍サイクルを備えるとともに、前記冷媒圧縮機が一定
速度で回転され、かつ、前記室内側ファンを駆動するフ
ァンモータが回転数検出機能を有しない構成の空気調和
機において、前記冷媒圧縮機の駆動電流値を計測する電
流値計測手段と、前記冷凍サイクルの運転を制御する運
転制御手段とを備え、暖房運転時、前記運転制御手段
は、前記電流値計測手段の計測する駆動電流値を常に監
視し、計測される駆動電流値が前記冷媒圧縮機の過負荷
運転状態を示す第１基準電流値以下である場合には、前
記室内側ファンの低速運転時の回転数を正常運転時の適
正回転数で制御し、計測される駆動電流値が前記第１基
準電流値を超えた場合には、前記室内側ファンの低速運
転時の回転数を前記正常運転時の適正回転数より一定数
だけ高くした減電対応回転数にて制御することを特徴と
する。Further, the blower control device for an air conditioner according to the present invention comprises a refrigerant compressor, an indoor fan, an indoor heat exchanger, an outdoor fan, an outdoor heat exchanger, and the indoor heat exchanger. A decompressor inserted between the outdoor heat exchanger and a refrigeration cycle formed by a four-way valve that switches connection between the refrigerant compressor and the indoor heat exchanger or the outdoor heat exchanger, In the air conditioner configured such that the refrigerant compressor is rotated at a constant speed, and the fan motor that drives the indoor fan does not have a rotation speed detection function, a current value that measures a drive current value of the refrigerant compressor. A measurement unit and an operation control unit that controls the operation of the refrigeration cycle are provided, and during the heating operation, the operation control unit constantly monitors the drive current value measured by the current value measurement unit, and the measured drive When the flow value is equal to or lower than the first reference current value indicating the overload operation state of the refrigerant compressor, the rotation speed of the indoor fan during low speed operation is controlled by an appropriate rotation speed during normal operation and measured. When the driving current value exceeds the first reference current value, the rotation speed of the indoor side fan at low speed operation is increased by a certain number from the proper rotation speed at normal operation to correspond to the power reduction corresponding rotation speed. It is characterized by being controlled by.

【００２４】このような特徴を有する本発明によれば、
暖房運転時、運転制御手段は、電流値計測手段により計
測される駆動電流値が第１基準電流値以下である場合に
は、室内側ファンの低速運転時の回転数を正常運転時の
適正回転数で制御し、電流値計測手段により計測される
駆動電流値が第１基準電流値を超えた場合にのみ、室内
側ファンの低速運転時の回転数を減電対応回転数にて制
御するように構成している。これにより、めったに発生
しない減電時を想定して、中速運転時や低速運転時の回
転数を予め高めに設定しておく従来の場合に比べて、省
エネを促進することができる。また、商用電源の電圧が
低下する減電時に、冷媒圧縮機が過負荷運転状態となる
ことを事前に回避することが可能になる。According to the present invention having such characteristics,
During the heating operation, the operation control means, when the drive current value measured by the current value measuring means is less than or equal to the first reference current value, changes the rotation speed of the indoor fan during low speed operation to proper rotation during normal operation. The number of rotations of the indoor fan is controlled by the number of rotations, and only when the drive current value measured by the current value measuring means exceeds the first reference current value, the rotation speed of the indoor fan during low speed operation is controlled by the rotation speed corresponding to power reduction. Is configured. As a result, energy saving can be promoted as compared with the conventional case in which the number of revolutions during medium-speed operation or low-speed operation is set to a high value in advance, assuming a power reduction that rarely occurs. In addition, it is possible to prevent the refrigerant compressor from entering the overload operation state in advance at the time of power reduction when the voltage of the commercial power supply drops.

【００２５】また、本発明の空気調和機の送風制御装置
は、冷媒圧縮機と、室内側ファンと、室内側熱交換機
と、室外側ファンと、室外側熱交換機と、前記室内側熱
交換機と前記室外側熱交換機との間に介挿される減圧機
と、前記冷媒圧縮機と前記室内側熱交換機又は前記室外
側熱交換機との接続を切り換える四方弁とで形成される
冷凍サイクルを備えるとともに、前記冷媒圧縮機が一定
速度で回転され、かつ、前記室内側ファンを駆動するフ
ァンモータが回転数検出機能を有しない構成の空気調和
機において、前記冷媒圧縮機の駆動電流値を計測する電
流値計測手段と、前記冷凍サイクルの運転を制御する運
転制御手段とを備え、暖房運転時、前記運転制御手段
は、前記電流値計測手段の計測する駆動電流値を常に監
視し、計測される駆動電流値が前記冷媒圧縮機の初期の
過負荷運転状態を示す第１基準電流値以下である場合に
は、前記室内側ファンの低速運転時の回転数を過負荷運
転状態でない正常運転時の適正回転数で制御し、計測さ
れる駆動電流値が前記第１基準電流値を超えた場合に
は、前記室内側ファンの低速運転時の回転数を前記正常
運転時の適正回転数より一定数だけ高くした減電対応回
転数にて制御し、計測される駆動電流値が前記第１基準
電流値よりも高めに設定された第２基準電流値を超えた
場合には、前記室外側ファンの回転を停止することを特
徴とする。Further, the air conditioner air blow control device of the present invention includes a refrigerant compressor, an indoor fan, an indoor heat exchanger, an outdoor fan, an outdoor heat exchanger, and the indoor heat exchanger. A decompressor inserted between the outdoor heat exchanger and a refrigeration cycle formed by a four-way valve that switches connection between the refrigerant compressor and the indoor heat exchanger or the outdoor heat exchanger, In the air conditioner configured such that the refrigerant compressor is rotated at a constant speed, and the fan motor that drives the indoor fan does not have a rotation speed detection function, a current value that measures a drive current value of the refrigerant compressor. A measurement unit and an operation control unit that controls the operation of the refrigeration cycle are provided, and during the heating operation, the operation control unit constantly monitors the drive current value measured by the current value measurement unit, and the measured drive When the flow value is less than or equal to the first reference current value indicating the initial overload operation state of the refrigerant compressor, the rotation speed of the indoor fan during low speed operation is appropriate for normal operation that is not overload operation state. When the drive current value measured by controlling the rotation speed exceeds the first reference current value, the rotation speed of the indoor fan during low speed operation is fixed by a certain number from the proper rotation speed during normal operation. When the measured drive current value exceeds the second reference current value which is set higher than the first reference current value, the rotation of the outdoor fan is controlled by the increased deceleration-compatible rotation speed. It is characterized by stopping.

【００２６】このような特徴を有する本発明によれば、
暖房運転時、運転制御手段は、電流値計測手段により計
測される駆動電流値が第１基準電流値以下である場合に
は、室内側ファンの低速運転時の回転数を正常運転時の
適正回転数で制御し、電流値計測手段により計測される
駆動電流値が第１基準電流値を超えた場合にのみ、室内
側ファンの低速運転時の回転数を減電対応回転数にて制
御するように構成している。これにより、めったに発生
しない減電時を想定して、中速運転時や低速運転時の回
転数を予め高めに設定しておく従来の場合に比べて、省
エネを促進することができる。また、商用電源の電圧が
低下する減電時に、冷媒圧縮機が過負荷運転状態となる
ことを事前に回避することが可能になる。さらに、減電
対応回転数にて制御を行なってもなおかつ過負荷運転状
態が継続し、電流値計測手段により計測される駆動電流
値が第２基準電流値を超えた場合には、室外側ファンの
回転を停止するように構成したので、過負荷運転状態を
より確実に回避して、早期に正常運転状態に復帰するこ
とが可能となる。According to the present invention having such characteristics,
During the heating operation, the operation control means, when the drive current value measured by the current value measuring means is less than or equal to the first reference current value, changes the rotation speed of the indoor fan during low speed operation to proper rotation during normal operation. The number of rotations of the indoor fan is controlled by the number of rotations, and only when the drive current value measured by the current value measuring means exceeds the first reference current value, the rotation speed of the indoor fan during low speed operation is controlled by the rotation speed corresponding to power reduction. Is configured. As a result, energy saving can be promoted as compared with the conventional case in which the number of revolutions during medium-speed operation or low-speed operation is set to a high value in advance, assuming a power reduction that rarely occurs. In addition, it is possible to prevent the refrigerant compressor from entering the overload operation state in advance at the time of power reduction when the voltage of the commercial power supply drops. Further, when the overload operation state is continued even when the control is performed at the rotation speed corresponding to the power reduction and the drive current value measured by the current value measuring means exceeds the second reference current value, the outdoor fan Since the rotation is stopped, it is possible to more surely avoid the overload operation state and quickly return to the normal operation state.

【００２７】また、本発明の空気調和機の送風制御装置
によれば、暖房運転時、運転制御手段はさらに、電流値
計測手段にて計測される駆動電流値が第１基準電流値を
超えた場合には、室内側ファンの中速運転時の回転数を
正常運転時の適正回転数より一定数だけ高くした減電対
応回転数にて制御することにより、少なくとも低速運転
時と中速運転時との回転比率を適正に保つことを特徴と
する。According to the air conditioner air blow control device of the present invention, during the heating operation, the operation control means further causes the drive current value measured by the current value measuring means to exceed the first reference current value. In this case, by controlling the rotation speed of the indoor fan during middle speed operation by a certain number of times higher than the proper rotation speed during normal operation, the rotation speed can be reduced at least during low speed operation and medium speed operation. It is characterized by maintaining a proper rotation ratio with.

【００２８】このような特徴を有する本発明によれば、
正常運転時および減電時の双方においてファンモータの
各運転モード（Ｈ、Ｍ、Ｌ）における回転数を適正な比
率で制御することができる。そのため、減電時において
も、低速運転時と中速運転時の風量を適正に制御できる
ので、空気調和機の風量制御が故障しているかのような
錯覚を使用者に与えてしまうといった従来の不具合を解
消することができる。According to the present invention having such characteristics,
The rotation speed in each operation mode (H, M, L) of the fan motor can be controlled at an appropriate ratio both during normal operation and during power reduction. Therefore, even when the power is reduced, the air volume during low-speed operation and during medium-speed operation can be appropriately controlled, which gives the user the illusion that the air volume control of the air conditioner is out of order. Problems can be resolved.

【００２９】[0029]

【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照して説明する。図１は、本発明の送風制御
装置を備えた空気調和機の系統図（冷凍サイクル）であ
る。同図において、冷媒圧縮機（以下、単に圧縮機とい
う）１の吐出口１１及び吸入口１２は、四方弁２を介し
て室内側ファン３１を有する室内側熱交換機３の一方の
接続口と、室外側ファン５１を有する室外側熱交換機５
の一方の接続口とに接続されており、室内側熱交換機３
の他方の接続口と室外側熱交換機５の他方の接続口と
が、減圧機４を介して接続されている。また、室内側熱
交換機３には、内部に設けられた導管（図示省略）内を
流れる冷媒の温度（実質的には導管温度）を検出する導
管温度センサ７が取り付けられている。また、図示しな
い室内側ユニットの空気吸込口近傍には、吸込空気の温
度（すなわち、室内温度）を検出する室内温度センサ２
１（図２参照）が配置された構成となっている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram (refrigeration cycle) of an air conditioner provided with the blower control device of the present invention. In the figure, a discharge port 11 and a suction port 12 of a refrigerant compressor (hereinafter, simply referred to as a compressor) 1 are connected to one connection port of an indoor heat exchanger 3 having an indoor fan 31 via a four-way valve 2, Outdoor heat exchanger 5 having outdoor fan 51
The indoor heat exchanger 3 is connected to one of the connection ports.
The other connection port of No. 2 and the other connection port of the outdoor heat exchanger 5 are connected via the pressure reducer 4. Further, the indoor heat exchanger 3 is provided with a conduit temperature sensor 7 for detecting the temperature (substantially, the conduit temperature) of the refrigerant flowing inside the conduit (not shown) provided inside. An indoor temperature sensor 2 for detecting the temperature of the intake air (that is, the indoor temperature) is provided near the air intake port of the indoor unit (not shown).
1 (see FIG. 2) is arranged.

【００３０】そして、暖房運転時には、四方弁２の切り
換えにより、圧縮機１の吐出口１１と室内側熱交換機３
の一方の接続口とが接続され、圧縮機１の吸入口１２と
室外側熱交換機５の一方の接続口とが接続されることか
ら、圧縮機１で圧縮された高温冷媒は、図中に実線で示
す矢符の如く流れて室内を暖房する。すなわち、圧縮機
１で圧縮された高温冷媒は、四方弁２を通って室内側熱
交換機３に供給され、ここで室内側ファン３１によって
強制的に熱交換して室内を暖房する。室内側熱交換機３
により熱交換を終わって凝縮された冷媒は、減圧機４に
より減圧されて室外側熱交換機５に供給され、ここで室
外側ファン５１によって強制的に熱交換して室外側熱交
換機５の表面温度を低下させる。室外側熱交換機５によ
り熱交換を終わって気化された冷媒は、四方弁２を通っ
て再び圧縮機１に循環される。During heating operation, the discharge port 11 of the compressor 1 and the indoor heat exchanger 3 are switched by switching the four-way valve 2.
One of the connection ports is connected, and the suction port 12 of the compressor 1 and one connection port of the outdoor heat exchanger 5 are connected. Therefore, the high-temperature refrigerant compressed by the compressor 1 is It flows like the arrow shown by the solid line to heat the room. That is, the high-temperature refrigerant compressed by the compressor 1 is supplied to the indoor heat exchanger 3 through the four-way valve 2, where the indoor fan 31 forcibly exchanges heat to heat the room. Indoor heat exchanger 3
The refrigerant that has finished the heat exchange by and is condensed is supplied to the outdoor heat exchanger 5 after being decompressed by the decompressor 4, and here the heat is forcibly exchanged by the outdoor fan 51 and the surface temperature of the outdoor heat exchanger 5 is increased. Lower. The refrigerant that has undergone heat exchange by the outdoor heat exchanger 5 and is vaporized is circulated to the compressor 1 again through the four-way valve 2.

【００３１】一方、冷房運転時には、四方弁２の切り換
えにより、圧縮機１の吐出口１１と室外側熱交換機５の
一方の接続口とが接続され、圧縮機１の吸入口１２と室
内側熱交換機３の一方の接続口とが接続されることか
ら、圧縮機１で圧縮された高温冷媒は、図中に破線で示
す矢符の如く流れて室内を冷房する。On the other hand, during the cooling operation, by switching the four-way valve 2, the discharge port 11 of the compressor 1 and one connection port of the outdoor heat exchanger 5 are connected, and the suction port 12 of the compressor 1 and the indoor heat source. Since one of the connection ports of the exchanger 3 is connected, the high-temperature refrigerant compressed by the compressor 1 flows in the direction of the arrow shown by the broken line in the figure to cool the room.

【００３２】図２は、本発明の送風制御装置の電気的構
成を示すブロック図である。室内側熱交換機３の導管温
度を検出する導管温度センサ７の出力、及び室内側ユニ
ットの空気吸込口の吸込空気の温度（すなわち、室内温
度）を検出する室内温度センサ２１の出力は、図１に示
す冷凍サイクルを制御する運転制御部２２に導かれてい
る。FIG. 2 is a block diagram showing the electrical construction of the blower control device of the present invention. The output of the conduit temperature sensor 7 for detecting the conduit temperature of the indoor heat exchanger 3 and the output of the indoor temperature sensor 21 for detecting the temperature of the intake air at the air inlet of the indoor unit (that is, the indoor temperature) are as shown in FIG. It is guided to the operation control unit 22 which controls the refrigeration cycle shown in FIG.

【００３３】また、運転制御部２２によって制御される
冷媒圧縮機１の駆動電流値が電流値計測部２３によって
計測されており、この電流値計測部２３によって計測さ
れた駆動電流値が運転制御部２２に導かれている。ま
た、運転制御部２２には、暖房運転時の室内側ファン３
１の回転を制御するための回転制御テーブルを格納した
記憶部２４が接続されているとともに、暖房運転時や冷
房運転時の室内設定温度等を入力する各種スイッチ（図
示省略）が設けられた入力部２５が接続された構成とな
っている。The drive current value of the refrigerant compressor 1 controlled by the operation control unit 22 is measured by the current value measuring unit 23, and the drive current value measured by the current value measuring unit 23 is the operation control unit. 22. Further, the operation control unit 22 includes the indoor fan 3 during the heating operation.
An input that is connected to a storage unit 24 that stores a rotation control table for controlling the rotation of No. 1 and that is provided with various switches (not shown) for inputting a room set temperature or the like during heating operation or cooling operation The part 25 is connected.

【００３４】記憶部２４には、商用電源が例えば９０Ｖ
に低下した場合の減電時を想定した減電時用回転制御テ
ーブル２４１と、商用電源が通常の１００Ｖの場合の正
常動作時を想定した正常時用回転制御テーブル２４２と
の２種類のテーブルが用意されている。A commercial power source, for example, 90V is stored in the storage unit 24.
There are two types of tables, a rotation control table for power reduction 241 that assumes the time of power reduction when it drops to a low level, and a rotation control table for normal time 242 that assumes the normal operation when the commercial power source is normal 100V. It is prepared.

【００３５】図３は、この減電時用回転制御テーブル２
４１と正常時用回転制御テーブル２４２のデータ構成例
を示している。同図（ａ）は減電時用回転制御テーブル
２４１であって、室内側ファン３１の各運転モード
（Ｈ、Ｍ、Ｌ）に従い、高速運転モード（Ｈ）のとき１
３００ｒｐｍ、中速運転モード（Ｍ）のとき１１５０ｒ
ｐｍ、低速運転モード（Ｌ）のとき１０００ｒｐｍに設
定されている。また、同図（ｂ）は正常時用回転制御テ
ーブル２４２であって、室内側ファン３１の各運転モー
ド（Ｈ、Ｍ、Ｌ）に従い、高速運転モード（Ｈ）のとき
１３００ｒｐｍ、中速運転モード（Ｍ）のとき１１００
ｒｐｍ、低速運転モード（Ｌ）のとき９００ｒｐｍに設
定されている。FIG. 3 shows the rotation control table 2 for the power reduction.
41 and a normal-time rotation control table 242 are shown as data configuration examples. (A) of the figure shows a rotation control table 241 for power reduction, which is 1 in high speed operation mode (H) according to each operation mode (H, M, L) of the indoor fan 31.
300 rpm, 1150 r in medium speed operation mode (M)
pm and 1000 rpm in the low speed operation mode (L). Further, FIG. 10B shows the normal-time rotation control table 242, which is 1300 rpm in the high-speed operation mode (H) and the medium-speed operation mode according to each operation mode (H, M, L) of the indoor fan 31. 1100 for (M)
The rpm is set to 900 rpm in the low speed operation mode (L).

【００３６】運転制御部２２は、マイクロコンピュータ
上で動作するソフトウエアを含む構成となっており、図
示しない内部メモリに格納された各種運転モード（暖房
運転モード、冷房運転モード、除霜運転モード等）を実
行するプログラムに従って、図１に示す冷凍サイクルを
制御するブロックである。The operation control unit 22 is configured to include software that operates on a microcomputer, and has various operation modes (a heating operation mode, a cooling operation mode, a defrosting operation mode, etc.) stored in an internal memory (not shown). ) Is a block which controls the refrigeration cycle shown in FIG.

【００３７】また、運転制御部２２は、暖房運転時、電
流値計測部２３の計測する駆動電流値を常に監視し、計
測される駆動電流値が冷媒圧縮機１の初期の過負荷運転
状態を示す第１基準電流値（例えば、１０Ａ等）以下で
ある場合には、室内側ファン３１の低速運転時および中
速回転時の回転数を過負荷運転状態でない正常運転時の
適正回転数で（図３（ｂ）に示すテーブルに従って）そ
れぞれ制御し、計測される駆動電流値が第１基準電流値
を超えた場合には、室内側ファン３１の低速運転時およ
び中速回転時の回転数をそれぞれの減電対応回転数にて
（図３（ａ）に示すテーブルに従って）制御し、計測さ
れる駆動電流値が第１基準電流値よりも高めに設定され
た第２基準電流値（例えば、１２Ａ等）を超えた場合に
は、室外側ファン５１の回転を停止するように制御を行
なう。The operation control unit 22 constantly monitors the drive current value measured by the current value measuring unit 23 during the heating operation, and the measured drive current value indicates the initial overload operation state of the refrigerant compressor 1. When the value is equal to or less than the first reference current value shown (for example, 10 A), the rotation speed of the indoor fan 31 during low speed operation and medium speed rotation is set to the appropriate rotation speed during normal operation that is not in the overload operation state ( When the measured drive current value exceeds the first reference current value by controlling each (according to the table shown in FIG. 3B), the rotation speeds of the indoor fan 31 during low speed operation and medium speed rotation are determined. A second reference current value (for example, a second reference current value that is controlled at each rotation speed corresponding to the power reduction (according to the table shown in FIG. 3A) and whose measured drive current value is set higher than the first reference current value (for example, 12 A, etc., the outdoor fan The rotation of 1 performs control to stop.

【００３８】次に、このような制御を行なう根拠につい
て説明する。暖房運転時に減電状態になると、室内側フ
ァン３１の回転数が落ちることになるが、このとき室内
側ファン３１の運転モードが低速運転モード（Ｌ）であ
った場合、室内側ファン３１の回転数が９００ｒｐｍ以
下に落ちることになる。そのため、室内側熱交換機３の
ところで十分な熱交換が行なわれず、その結果、冷媒圧
縮機１の負荷が大きくなって駆動電流値が上昇する。つ
まり、冷媒圧縮機１の駆動電流値の変化を監視すること
で、冷媒圧縮機１の負荷状態の変化を把握することがで
きる。そこで、本発明では、この駆動電流値の変化に着
目した制御を行なうことで、減電時に冷媒圧縮機１が極
力過負荷運転状態とならないように制御しようとするも
のである。Next, the rationale for performing such control will be described. When the power is reduced during the heating operation, the rotation speed of the indoor fan 31 is reduced. However, if the operation mode of the indoor fan 31 is the low speed operation mode (L) at this time, the rotation of the indoor fan 31 is reduced. The number will drop below 900 rpm. Therefore, sufficient heat exchange is not performed in the indoor heat exchanger 3, and as a result, the load on the refrigerant compressor 1 increases and the drive current value increases. That is, by monitoring the change in the drive current value of the refrigerant compressor 1, the change in the load state of the refrigerant compressor 1 can be grasped. Therefore, in the present invention, control is performed by paying attention to the change in the drive current value so as to prevent the refrigerant compressor 1 from being in an overload operation state as much as possible during power reduction.

【００３９】具体的に説明すると、駆動電流値が１０Ａ
（アンペア）を超えると、冷媒圧縮機１が初期の過負荷
運転状態（正確には、実際の過負荷運転状態に入る少し
前の状態）となるので、本実施形態ではこの１０Ａを上
記第１基準電流値として設定する。また、駆動電流値が
１２Ａ（アンペア）を超えると、冷媒圧縮機１が実際の
過負荷運転状態に入るので、本実施形態ではこの１２Ａ
を上記の第２基準電流値として設定する。また、本実施
形態では、１０Ａ以上または１２Ａ以上になった駆動電
流値が、８Ａ以下まで下がったとき、冷媒圧縮機１の過
負荷運転状態が解消されたと判断する。More specifically, the drive current value is 10 A.
When it exceeds (amperes), the refrigerant compressor 1 enters the initial overload operation state (more accurately, a state just before entering the actual overload operation state). Set as the reference current value. When the drive current value exceeds 12 A (ampere), the refrigerant compressor 1 enters the actual overload operation state.
Is set as the second reference current value. Further, in the present embodiment, when the drive current value that is 10 A or more or 12 A or more decreases to 8 A or less, it is determined that the overload operation state of the refrigerant compressor 1 has been eliminated.

【００４０】次に、上記構成の空気調和機の送風制御装
置において、暖房運転時の送風制御動作について、図４
に示すフローチャートを参照して説明する。暖房運転に
際しては、使用者は、入力部２５から室内設定温度を入
力し、運転制御部２２は、室内温度センサ２１によって
検出される室内温度が、この入力された室内設定温度と
なるように暖房運転を行う（ステップＳ１）。Next, with respect to the air blow control device for the air conditioner having the above-mentioned configuration, the air blow control operation during the heating operation will be described with reference to FIG.
This will be described with reference to the flowchart shown in FIG. In heating operation, the user inputs the indoor set temperature from the input unit 25, and the operation control unit 22 performs heating so that the indoor temperature detected by the indoor temperature sensor 21 becomes the input indoor set temperature. The operation is performed (step S1).

【００４１】ただし、暖房運転開始時においては、運転
制御部２２は、記憶部２４に記憶されている正常時用回
転制御テーブル２４２を参照して、室内側ファン３１の
回転制御を行なっている。However, at the start of the heating operation, the operation control unit 22 refers to the normal rotation control table 242 stored in the storage unit 24 to control the rotation of the indoor fan 31.

【００４２】すなわち、室内側ファン３１の運転モード
が高速運転モード（Ｈ）である場合には、室内側ファン
３１の回転が１３００ｒｐｍとなるような指示信号をフ
ァンモータに出力し、室内側ファン３１の運転モードが
中速運転モード（Ｍ）である場合には、室内側ファン３
１の回転が１１００ｒｐｍとなるような指示信号をファ
ンモータに出力し、室内側ファン３１の運転モードが低
速運転モード（Ｌ）である場合には、室内側ファン３１
の回転が１１００ｒｐｍとなるような指示信号をファン
モータに出力する。That is, when the operation mode of the indoor fan 31 is the high speed operation mode (H), an instruction signal for rotating the indoor fan 31 to 1300 rpm is output to the fan motor, and the indoor fan 31 is output. When the operation mode of the indoor fan 3 is the medium speed operation mode (M), the indoor fan 3
When the operation signal of the indoor fan 31 is the low speed operation mode (L), the indoor fan 31 outputs an instruction signal such that the rotation speed of 1 is 1100 rpm to the fan motor.
And outputs an instruction signal to the fan motor so that the rotation speed of 1100 rpm becomes 1100 rpm.

【００４３】このような暖房運転の過程において、運転
制御部２２は、電流値計測部２３の計測する冷媒圧縮機
１の駆動電流値を常に監視し（ステップＳ２）、電流計
測部２３により計測される駆動電流値が冷媒圧縮機１の
初期の過負荷運転状態（実際の過負荷運転状態に入る少
し前の状態）を示す第１基準電流値（１０Ａ）を超えた
か否かを確認する（ステップＳ３）。In the course of such heating operation, the operation control section 22 constantly monitors the drive current value of the refrigerant compressor 1 measured by the current value measurement section 23 (step S2) and measured by the current measurement section 23. It is confirmed whether or not the drive current value to be exceeded exceeds the first reference current value (10A) indicating the initial overload operation state of the refrigerant compressor 1 (a state slightly before entering the actual overload operation state) (step S3).

【００４４】その結果、計測される駆動電流値が１０Ａ
以下である場合（ステップＳ３でＮｏと判断される場
合）には、図３（ｂ）に示す正常時用回転制御テーブル
２４２に従って、室内側ファン３１の回転制御を継続す
る（ステップＳ４）。As a result, the measured drive current value is 10 A.
If the following is true (if No is determined in step S3), the rotation control of the indoor fan 31 is continued according to the normal rotation control table 242 shown in FIG. 3B (step S4).

【００４５】一方、ステップＳ３での確認の結果、計測
される駆動電流値が１０Ａを超えた場合（ステップＳ３
でＹｅｓと判断された場合）には、運転制御部２２は、
その時点で、記憶部２４に記憶されている減電時用回転
制御テーブル２４１を参照し、減電時用回転制御テーブ
ル２４１に従って室内側ファン３１の回転制御を行なう
（ステップＳ５）。On the other hand, as a result of the confirmation in step S3, when the measured drive current value exceeds 10 A (step S3
If it is determined to be Yes), the operation control unit 22
At that time, the rotation control table for power reduction 241 stored in the storage unit 24 is referred to, and the rotation control of the indoor fan 31 is performed according to the rotation control table for power reduction 241 (step S5).

【００４６】すなわち、その時点での室内側ファン３１
の運転モードが低速運転モード（Ｌ）であった場合に
は、室内側ファン３１の回転数が１０００ｒｐｍとなる
ような指示信号をファンモータに出力する。つまり、駆
動電流値が１０Ａを超えたのは、減電等によって、室内
側ファン３１の実際の回転数が低速運転モード（Ｌ）で
の設定回転数である９００ｒｐｍ以下に低下した結果で
あるため、その時点で、室内側ファン３１の回転が１０
００ｒｐｍとなるような指示信号をファンモータに出力
することで、実際の回転数として９００ｒｐｍを確保し
ようとするものである。これにより、通常は、冷媒圧縮
機１が過負荷運転状態まで行くことを防止できる。That is, the indoor fan 31 at that time
When the operation mode of 1 is the low speed operation mode (L), an instruction signal that causes the rotation speed of the indoor fan 31 to be 1000 rpm is output to the fan motor. That is, the reason why the drive current value exceeds 10 A is that the actual rotation speed of the indoor fan 31 is reduced to 900 rpm or less, which is the set rotation speed in the low speed operation mode (L), due to power reduction or the like. , At that time, the rotation of the indoor fan 31 is 10
By outputting an instruction signal such as 00 rpm to the fan motor, it is intended to secure 900 rpm as the actual rotation speed. As a result, normally, it is possible to prevent the refrigerant compressor 1 from reaching the overload operation state.

【００４７】また、室内側ファン３１の運転モードが低
速運転モード（Ｌ）から中速運転モード（Ｍ）に変更に
なった場合には、室内側ファン３１の回転数が１１５０
ｒｐｍとなるような指示信号をファンモータに出力す
る。これにより、実際の回転数として１０５０〜１１０
０ｒｐｍ程度を確保することができるので、使用者にと
っては、室内側ファン３１の運転モードが低速運転モー
ド（Ｌ）から中速運転モード（Ｍ）に変更になったこと
を、風量の変化から体感として知ることができる。When the operation mode of the indoor fan 31 is changed from the low speed operation mode (L) to the medium speed operation mode (M), the rotation speed of the indoor fan 31 is 1150.
An instruction signal for rpm is output to the fan motor. As a result, the actual number of rotations is 1050 to 110
Since about 0 rpm can be secured, the user can feel that the operation mode of the indoor fan 31 is changed from the low speed operation mode (L) to the medium speed operation mode (M) from the change of the air volume. You can know as

【００４８】この後、運転制御部２２は、記憶部２４に
記憶されている減電時用回転制御テーブル２４１を参照
して、室内側ファン３１の回転制御を継続しつつ、電流
計測部２３により計測される駆動電流値が８Ａ以下にな
ったか否か、および電流計測部２３により計測される駆
動電流値が逆にさらに上昇して１２Ａを超えたか否かを
確認する（ステップＳ６、ステップＳ７）。After that, the operation control unit 22 refers to the rotation control table for power reduction 241, which is stored in the storage unit 24, and continues the rotation control of the indoor fan 31 while operating the current measuring unit 23. It is confirmed whether the measured drive current value is 8 A or less, and whether the drive current value measured by the current measuring unit 23 is further increased and exceeds 12 A (steps S6 and S7). .

【００４９】その結果、電流計測部２３により計測され
る駆動電流値が１２Ａを超えた場合（ステップＳ６でＮ
ｏ、ステップＳ７でＹｅｓと判断された場合）には、冷
媒圧縮機１が完全に過負荷運転状態に入ったと判断し
て、従来の過負荷運転制御と同様に、室外側ファン５１
の回転を停止して（ステップＳ８）、ステップＳ７に戻
る。As a result, when the drive current value measured by the current measuring unit 23 exceeds 12 A (N in step S6)
o, if Yes in step S7), it is determined that the refrigerant compressor 1 has completely entered the overload operation state, and the outdoor fan 51 is determined as in the conventional overload operation control.
Is stopped (step S8) and the process returns to step S7.

【００５０】一方、ステップＳ５で室内側ファン３１の
回転数を上げて制御したことにより、冷媒圧縮機１への
過負荷運転状態が解消されて、駆動電流値が８Ａ以下ま
で低下した場合（ステップＳ６でＹｅｓと判断された場
合）には、運転制御部２２は、その時点から、記憶部２
４に記憶されている正常時用回転制御テーブル２４２を
参照して、室内側ファン３１の回転制御を行なう。ま
た、室外側ファン５１の回転を停止することにより、冷
媒圧縮機１への過負荷状態が解消されて、駆動電流値が
８Ａ以下まで低下した場合（ステップＳ７の判断がＹｅ
ｓから再びＮｏに変わって、かつ、ステップＳ６でＹｅ
ｓと判断された場合）も、運転制御部２２は、その時点
から、記憶部２４に記憶されている正常時用回転制御テ
ーブル２４２を参照して、室内側ファン３１の回転制御
を行なう。On the other hand, when the rotation speed of the indoor fan 31 is increased and controlled in step S5, the overload operation state of the refrigerant compressor 1 is canceled and the drive current value is reduced to 8 A or less (step). If it is determined to be Yes in S6), the operation control unit 22 starts the storage unit 2 from that time point.
The rotation control table 242 for normal time stored in No. 4 is referred to, and the rotation control of the indoor fan 31 is performed. Further, by stopping the rotation of the outdoor fan 51, the overload condition to the refrigerant compressor 1 is canceled and the drive current value is reduced to 8 A or less (the determination in step S7 is Yes).
s is changed to No again, and Yes in step S6
Even when it is determined to be s), the operation control unit 22 refers to the normal time rotation control table 242 stored in the storage unit 24 from that point, and controls the rotation of the indoor fan 31.

【００５１】なお、上記実施形態では、冷媒圧縮機１が
初期の過負荷運転状態（実際の過負荷運転状態に入る少
し前の状態）となった場合には、中速運転モード（Ｍ）
の回転数も少し高めに変更するようにしているが、少な
くとも低速運転モード（Ｌ）の回転数を変更すればよ
く、中速運転モード（Ｍ）の回転数については、正常時
用回転制御テーブル２４２と同様、１１００ｒｐｍとし
てもよい。In the above embodiment, when the refrigerant compressor 1 is in the initial overload operation state (a state just before entering the actual overload operation state), the medium speed operation mode (M).
The rotational speed of is also slightly increased, but at least the rotational speed in the low speed operation mode (L) may be changed. As for the rotational speed in the medium speed operation mode (M), the normal rotation control table is used. Similar to 242, it may be 1100 rpm.

【００５２】[0052]

【発明の効果】本発明の空気調和機の送風制御装置によ
れば、暖房運転時、運転制御手段は、電流値計測手段に
より計測される駆動電流値が第１基準電流値以下である
場合には、室内側ファンの低速運転時および中速回転時
の回転数を正常運転時の適正回転数でそれぞれ制御し、
電流値計測手段により計測される駆動電流値が第１基準
電流値を超えた場合にのみ、室内側ファンの低速運転時
および中速回転時の回転数をそれぞれの減電対応回転数
にて制御するように構成している。これにより、めった
に発生しない減電時を想定して、中速運転時や低速運転
時の回転数を予め高めに設定しておく従来の場合に比べ
て、省エネを促進することができる。また、運転制御手
段は、電流値計測手段により計測される駆動電流値が第
１基準電流値を超えた場合にのみ、室内側ファンの低速
運転時および中速回転時の回転数をそれぞれの減電対応
回転数にて制御するように構成している。これにより、
商用電源の電圧が低下する減電時に、冷媒圧縮機が過負
荷運転状態となることを事前に回避することが可能にな
るとともに、正常運転時および減電時の双方においてフ
ァンモータの各運転モードにおける回転数を適正な比率
で制御することができる。そのため、減電時において
も、低速運転時と中速運転時の風量を適正に制御できる
ので、空気調和機の風量制御が故障しているかのような
錯覚を使用者に与えてしまうといった従来の不具合を解
消することができる。さらに、減電対応回転数にて制御
を行なってもなおかつ過負荷運転状態が継続し、電流値
計測手段により計測される駆動電流値が第２基準電流値
を超えた場合には、室外側ファンの回転を停止するよう
に構成したので、過負荷運転状態をより確実に回避し
て、早期に正常運転状態に復帰することができる。According to the blower control device for the air conditioner of the present invention, during the heating operation, the operation control means is provided when the drive current value measured by the current value measuring means is less than or equal to the first reference current value. Controls the number of rotations of the indoor fan during low speed operation and medium speed rotation with the proper rotation speed during normal operation,
Only when the drive current value measured by the current value measuring means exceeds the first reference current value, the rotation speeds of the indoor fan during low-speed operation and medium-speed rotation are controlled by respective reduction-corresponding rotation speeds. It is configured to do. As a result, energy saving can be promoted as compared with the conventional case in which the number of revolutions during medium-speed operation or low-speed operation is set to a high value in advance, assuming a power reduction that rarely occurs. Further, the operation control means reduces the rotation speeds of the indoor fan during low speed operation and during middle speed rotation only when the drive current value measured by the current value measurement means exceeds the first reference current value. It is configured to be controlled by the rotation speed corresponding to the electric power. This allows
It is possible to prevent the refrigerant compressor from entering the overload operation state at the time of power reduction when the voltage of the commercial power supply drops, and at the same time, in each operation mode of the fan motor during both normal operation and power reduction. It is possible to control the number of revolutions at a proper ratio. Therefore, even when the power is reduced, the air volume during low-speed operation and during medium-speed operation can be appropriately controlled, which gives the user the illusion that the air volume control of the air conditioner is out of order. Problems can be resolved. Further, when the overload operation state is continued even when the control is performed at the rotation speed corresponding to the power reduction and the drive current value measured by the current value measuring means exceeds the second reference current value, the outdoor fan Since the rotation is stopped, it is possible to more surely avoid the overload operation state and quickly return to the normal operation state.

【００５３】また、本発明の空気調和機の送風制御装置
によれば、暖房運転時、運転制御手段は、電流値計測手
段により計測される駆動電流値が、冷媒圧縮機の過負荷
運転状態を示す第１基準電流値を超えた場合には、室内
側ファンの低速運転時の回転数を過負荷運転状態でない
正常運転時の適正回転数から一定数だけ上げた減電対応
回転数にて制御する構成としている。これにより、商用
電源の電圧が低下する減電時に、冷媒圧縮機が過負荷運
転状態となることを事前に回避することが可能となる。Further, according to the air conditioner air blow control device of the present invention, during the heating operation, the operation control means determines that the drive current value measured by the current value measuring means indicates the overload operation state of the refrigerant compressor. If the first reference current value shown is exceeded, the rotation speed of the indoor fan during low-speed operation is controlled by a deceleration-compatible rotation speed that is increased by a fixed number from the appropriate rotation speed during normal operation that is not overloaded. It is configured to do. As a result, it is possible to prevent the refrigerant compressor from entering the overload operation state in advance at the time of power reduction when the voltage of the commercial power supply drops.

【００５４】また、本発明の空気調和機の送風制御装置
によれば、暖房運転時、運転制御手段は、電流値計測手
段により計測される駆動電流値が第１基準電流値以下で
ある場合には、室内側ファンの低速運転時の回転数を正
常運転時の適正回転数で制御し、電流値計測手段により
計測される駆動電流値が第１基準電流値を超えた場合に
のみ、室内側ファンの低速運転時の回転数を減電対応回
転数にて制御するように構成している。これにより、め
ったに発生しない減電時を想定して、中速運転時や低速
運転時の回転数を予め高めに設定しておく従来の場合に
比べて、省エネを促進することができる。また、商用電
源の電圧が低下する減電時に、冷媒圧縮機が過負荷運転
状態となることを事前に回避することができる。Further, according to the air-conditioning fan control device of the present invention, during the heating operation, the operation control means is provided when the drive current value measured by the current value measuring means is less than or equal to the first reference current value. Controls the rotation speed of the indoor fan during low speed operation at an appropriate rotation speed during normal operation, and only when the drive current value measured by the current value measuring means exceeds the first reference current value, the indoor side The rotation speed of the fan during low-speed operation is controlled by the rotation speed corresponding to power reduction. As a result, energy saving can be promoted as compared with the conventional case in which the number of revolutions during medium-speed operation or low-speed operation is set to a high value in advance, assuming a power reduction that rarely occurs. Further, it is possible to prevent the refrigerant compressor from entering the overload operation state in advance at the time of power reduction when the voltage of the commercial power supply drops.

【００５５】また、本発明の空気調和機の送風制御装置
によれば、暖房運転時、運転制御手段は、電流値計測手
段により計測される駆動電流値が第１基準電流値以下で
ある場合には、室内側ファンの低速運転時の回転数を正
常運転時の適正回転数で制御し、電流値計測手段により
計測される駆動電流値が第１基準電流値を超えた場合に
のみ、室内側ファンの低速運転時の回転数を減電対応回
転数にて制御するように構成している。これにより、め
ったに発生しない減電時を想定して、中速運転時や低速
運転時の回転数を予め高めに設定しておく従来の場合に
比べて、省エネを促進することができる。また、商用電
源の電圧が低下する減電時に、冷媒圧縮機が過負荷運転
状態となることを事前に回避することができる。さら
に、減電対応回転数にて制御を行なってもなおかつ過負
荷運転状態が継続し、電流値計測手段により計測される
駆動電流値が第２基準電流値を超えた場合には、室外側
ファンの回転を停止するように構成したので、過負荷運
転状態をより確実に回避して、早期に正常運転状態に復
帰することができる。According to the blower control device of the air conditioner of the present invention, during the heating operation, the operation control means is provided when the drive current value measured by the current value measuring means is less than or equal to the first reference current value. Controls the rotation speed of the indoor fan during low speed operation at an appropriate rotation speed during normal operation, and only when the drive current value measured by the current value measuring means exceeds the first reference current value, the indoor side The rotation speed of the fan during low-speed operation is controlled by the rotation speed corresponding to power reduction. As a result, energy saving can be promoted as compared with the conventional case in which the number of revolutions during medium-speed operation or low-speed operation is set to a high value in advance, assuming a power reduction that rarely occurs. Further, it is possible to prevent the refrigerant compressor from entering the overload operation state in advance at the time of power reduction when the voltage of the commercial power supply drops. Further, when the overload operation state is continued even when the control is performed at the rotation speed corresponding to the power reduction and the drive current value measured by the current value measuring means exceeds the second reference current value, the outdoor fan Since the rotation is stopped, it is possible to more surely avoid the overload operation state and quickly return to the normal operation state.

【００５６】また、本発明の空気調和機の送風制御装置
によれば、暖房運転時、運転制御手段はさらに、電流値
計測手段にて計測される駆動電流値が第１基準電流値を
超えた場合には、室内側ファンの中速運転時の回転数を
正常運転時の適正回転数より一定数だけ高くした減電対
応回転数にて制御することにより、少なくとも低速運転
時と中速運転時との回転比率を適正に保つ構成としたの
で、正常運転時および減電時の双方においてファンモー
タの各運転モードにおける回転数を適正な比率で制御す
ることができる。そのため、減電時においても、低速運
転時と中速運転時の風量を適正に制御できるので、空気
調和機の風量制御が故障しているかのような錯覚を使用
者に与えてしまうといった従来の不具合を解消すること
ができる。According to the air conditioner air blow control device of the present invention, during the heating operation, the operation control means further causes the drive current value measured by the current value measuring means to exceed the first reference current value. In this case, by controlling the rotation speed of the indoor fan during middle speed operation by a certain number of times higher than the proper rotation speed during normal operation, the rotation speed can be reduced at least during low speed operation and medium speed operation. Since the rotation ratio of the fan motor is maintained at an appropriate ratio, the rotation speed of each fan motor in each operation mode can be controlled at an appropriate ratio during both normal operation and power reduction. Therefore, even when the power is reduced, the air volume during low-speed operation and during medium-speed operation can be appropriately controlled, which gives the user the illusion that the air volume control of the air conditioner is out of order. Problems can be resolved.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の送風制御装置を備えた空気調和機の系
統図である。FIG. 1 is a system diagram of an air conditioner including a blower control device of the present invention.

【図２】本発明の送風制御装置の電気的構成を示すブロ
ック図である。FIG. 2 is a block diagram showing an electrical configuration of a blower control device of the present invention.

【図３】（ａ）は減電時用回転制御テーブルのデータ構
成例を示す説明図、（ｂ）は正常時用回転制御テーブル
のデータ構成例を示す説明図である。3A is an explanatory diagram showing a data configuration example of a rotation control table for power reduction, and FIG. 3B is an explanatory diagram showing a data configuration example of a rotation control table for normal time.

【図４】本発明の送風制御装置において、暖房運転時の
送風制御動作を説明するためのフローチャートである。FIG. 4 is a flowchart for explaining a blow control operation during heating operation in the blow control device of the present invention.

【符号の説明】[Explanation of symbols]

１ 圧縮機（冷媒圧縮機） ２ 四方弁 ３ 室内側熱交換機 ４ 減圧機 ５ 室外側熱交換機 ７ 導管温度センサ ２１ 室内温度センサ ２２ 運転制御部 ２３ 電流値計測部 ２４ 記憶部 ２５ 入力部 1 compressor (refrigerant compressor) 2 four-way valve 3 Indoor heat exchanger 4 pressure reducer 5 Outdoor heat exchanger 7 Conduit temperature sensor 21 Indoor temperature sensor 22 Operation control unit 23 Current value measuring unit 24 Memory 25 Input section

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 冷媒圧縮機と、室内側ファンと、室内側
熱交換機と、室外側ファンと、室外側熱交換機と、前記
室内側熱交換機と前記室外側熱交換機との間に介挿され
る減圧機と、前記冷媒圧縮機と前記室内側熱交換機又は
前記室外側熱交換機との接続を切り換える四方弁とで形
成される冷凍サイクルを備えるとともに、前記冷媒圧縮
機が一定速度で回転され、かつ、前記室内側ファンを駆
動するファンモータが回転数検出機能を有しない構成の
空気調和機であって、前記冷凍サイクルの運転を制御す
る運転制御手段は、減電時を考慮して、室内側ファンの
低速運転時および中速回転時の回転数を正常運転時の適
正回転数よりそれぞれ一定数だけ高くした減電対応回転
数にて制御する構成の空気調和機の室内送風制御装置に
おいて、 前記冷媒圧縮機の駆動電流値を計測する電流値計測手段
を備え、 暖房運転時、前記運転制御手段は、前記電流値計測手段
の計測する駆動電流値を常に監視し、計測される駆動電
流値が前記冷媒圧縮機の初期の過負荷運転状態を示す第
１基準電流値以下である場合には、前記室内側ファンの
低速運転時および中速回転時の回転数を過負荷運転状態
でない前記正常運転時の適正回転数でそれぞれ制御し、
計測される駆動電流値が前記第１基準電流値を超えた場
合にのみ、前記室内側ファンの低速運転時および中速回
転時の回転数を前記それぞれの減電対応回転数にて制御
し、計測される駆動電流値が前記第１基準電流値よりも
高めに設定された第２基準電流値を超えた場合には、前
記室外側ファンの回転を停止することを特徴とする空気
調和機の送風制御装置。1. A refrigerant compressor, an indoor fan, an indoor heat exchanger, an outdoor fan, an outdoor heat exchanger, and a heat exchanger inserted between the indoor heat exchanger and the outdoor heat exchanger. With a pressure reducer, a refrigeration cycle formed by a four-way valve that switches the connection between the refrigerant compressor and the indoor heat exchanger or the outdoor heat exchanger, the refrigerant compressor is rotated at a constant speed, and An air conditioner in which a fan motor that drives the indoor fan does not have a rotation speed detection function, and the operation control means that controls the operation of the refrigeration cycle has an indoor side in consideration of power reduction. In the indoor blower control device for an air conditioner configured to control the rotation speed during low-speed operation of the fan and the rotation speed during medium-speed rotation by a certain number of rotations lower than the appropriate rotation speed during normal operation, respectively, Refrigerant A current value measuring means for measuring the drive current value of the compressor is provided, and during the heating operation, the operation control means constantly monitors the drive current value measured by the current value measuring means, and the measured drive current value is When the value is equal to or lower than the first reference current value indicating the initial overload operation state of the refrigerant compressor, the rotation speeds of the indoor fan during low speed operation and medium speed rotation are not in the overload operation state and during normal operation. Controlled by the appropriate rotation speed of
Only when the measured drive current value exceeds the first reference current value, the number of revolutions of the indoor fan during low-speed operation and medium-speed rotation is controlled by each of the reduced-electricity corresponding revolutions, When the measured drive current value exceeds the second reference current value set higher than the first reference current value, the rotation of the outdoor fan is stopped. Blower control device. 【請求項２】 冷媒圧縮機と、室内側ファンと、室内側
熱交換機と、室外側ファンと、室外側熱交換機と、前記
室内側熱交換機と前記室外側熱交換機との間に介挿され
る減圧機と、前記冷媒圧縮機と前記室内側熱交換機又は
前記室外側熱交換機との接続を切り換える四方弁とで形
成される冷凍サイクルを備えるとともに、前記冷媒圧縮
機が一定速度で回転され、かつ、前記室内側ファンを駆
動するファンモータが回転数検出機能を有しない構成の
空気調和機において、 前記冷媒圧縮機の駆動電流値を計測する電流値計測手段
と、 前記室内側ファンの運転を制御する運転制御手段とを備
え、 暖房運転時、前記運転制御手段は、前記電流値計測手段
の計測する駆動電流値を常に監視し、計測される駆動電
流値が、前記冷媒圧縮機の過負荷運転状態を示す第１基
準電流値を超えた場合には、前記室内側ファンの低速運
転時の回転数を過負荷運転状態でない正常運転時の適正
回転数から一定数だけ上げた減電対応回転数にて制御す
ることを特徴とする空気調和機の送風制御装置。2. A refrigerant compressor, an indoor side fan, an indoor side heat exchanger, an outdoor side fan, an outdoor side heat exchanger, and an interposing between the indoor side heat exchanger and the outdoor side heat exchanger. With a pressure reducer, a refrigeration cycle formed by a four-way valve that switches the connection between the refrigerant compressor and the indoor heat exchanger or the outdoor heat exchanger, the refrigerant compressor is rotated at a constant speed, and In an air conditioner having a configuration in which a fan motor that drives the indoor fan does not have a rotation speed detection function, current value measuring means that measures a drive current value of the refrigerant compressor, and operation of the indoor fan is controlled. The operation control means constantly monitors the drive current value measured by the current value measurement means during the heating operation, and the measured drive current value is the overload operation of the refrigerant compressor. Status In the case of exceeding the first reference current value indicating that the rotation speed of the indoor fan during low-speed operation is increased by a fixed number from the appropriate speed during normal operation that is not in the overload operation state A blower control device for an air conditioner, which is characterized in that the air conditioner is controlled. 【請求項３】 冷媒圧縮機と、室内側ファンと、室内側
熱交換機と、室外側ファンと、室外側熱交換機と、前記
室内側熱交換機と前記室外側熱交換機との間に介挿され
る減圧機と、前記冷媒圧縮機と前記室内側熱交換機又は
前記室外側熱交換機との接続を切り換える四方弁とで形
成される冷凍サイクルを備えるとともに、前記冷媒圧縮
機が一定速度で回転され、かつ、前記室内側ファンを駆
動するファンモータが回転数検出機能を有しない構成の
空気調和機において、 前記冷媒圧縮機の駆動電流値を計測する電流値計測手段
と、 前記冷凍サイクルの運転を制御する運転制御手段とを備
え、 暖房運転時、前記運転制御手段は、前記電流値計測手段
の計測する駆動電流値を常に監視し、計測される駆動電
流値が前記冷媒圧縮機の過負荷運転状態を示す第１基準
電流値以下である場合には、前記室内側ファンの低速運
転時の回転数を正常運転時の適正回転数で制御し、計測
される駆動電流値が前記第１基準電流値を超えた場合に
は、前記室内側ファンの低速運転時の回転数を前記正常
運転時の適正回転数より一定数だけ高くした減電対応回
転数にて制御することを特徴とする空気調和機の送風制
御装置。3. A refrigerant compressor, an indoor fan, an indoor heat exchanger, an outdoor fan, an outdoor heat exchanger, and an interposing between the indoor heat exchanger and the outdoor heat exchanger. With a pressure reducer, a refrigeration cycle formed by a four-way valve that switches the connection between the refrigerant compressor and the indoor heat exchanger or the outdoor heat exchanger, the refrigerant compressor is rotated at a constant speed, and In an air conditioner having a configuration in which a fan motor that drives the indoor fan does not have a rotation speed detection function, a current value measuring unit that measures a drive current value of the refrigerant compressor, and an operation of the refrigeration cycle are controlled. An operation control means is provided, and during heating operation, the operation control means constantly monitors the drive current value measured by the current value measurement means, and the measured drive current value indicates the overload operation state of the refrigerant compressor. When it is less than or equal to the first reference current value shown, the rotation speed of the indoor fan during low speed operation is controlled by an appropriate rotation speed during normal operation, and the measured drive current value is equal to the first reference current value. When it exceeds, the rotation speed of the indoor fan during low-speed operation is controlled by a power reduction corresponding rotation speed that is higher than the appropriate rotation speed during normal operation by a certain number of times. Blower control device. 【請求項４】 冷媒圧縮機と、室内側ファンと、室内側
熱交換機と、室外側ファンと、室外側熱交換機と、前記
室内側熱交換機と前記室外側熱交換機との間に介挿され
る減圧機と、前記冷媒圧縮機と前記室内側熱交換機又は
前記室外側熱交換機との接続を切り換える四方弁とで形
成される冷凍サイクルを備えるとともに、前記冷媒圧縮
機が一定速度で回転され、かつ、前記室内側ファンを駆
動するファンモータが回転数検出機能を有しない構成の
空気調和機において、 前記冷媒圧縮機の駆動電流値を計測する電流値計測手段
と、 前記冷凍サイクルの運転を制御する運転制御手段とを備
え、 暖房運転時、前記運転制御手段は、前記電流値計測手段
の計測する駆動電流値を常に監視し、計測される駆動電
流値が前記冷媒圧縮機の初期の過負荷運転状態を示す第
１基準電流値以下である場合には、前記室内側ファンの
低速運転時の回転数を過負荷運転状態でない正常運転時
の適正回転数で制御し、計測される駆動電流値が前記第
１基準電流値を超えた場合には、前記室内側ファンの低
速運転時の回転数を前記正常運転時の適正回転数より一
定数だけ高くした減電対応回転数にて制御し、計測され
る駆動電流値が前記第１基準電流値よりも高めに設定さ
れた第２基準電流値を超えた場合には、前記室外側ファ
ンの回転を停止することを特徴とする空気調和機の送風
制御装置。4. A refrigerant compressor, an indoor side fan, an indoor side heat exchanger, an outdoor side fan, an outdoor side heat exchanger, and an interposing between the indoor side heat exchanger and the outdoor side heat exchanger. With a pressure reducer, a refrigeration cycle formed by a four-way valve that switches the connection between the refrigerant compressor and the indoor heat exchanger or the outdoor heat exchanger, the refrigerant compressor is rotated at a constant speed, and In an air conditioner having a configuration in which a fan motor that drives the indoor fan does not have a rotation speed detection function, a current value measuring unit that measures a drive current value of the refrigerant compressor, and an operation of the refrigeration cycle are controlled. An operation control means, and during heating operation, the operation control means constantly monitors the drive current value measured by the current value measurement means, and the measured drive current value is an initial overload operation of the refrigerant compressor. When the value is equal to or less than the first reference current value indicating the state, the rotation speed of the indoor fan during low speed operation is controlled by an appropriate rotation speed during normal operation that is not in the overload operation state, and the measured drive current value is When the first reference current value is exceeded, the rotation speed of the indoor fan during low-speed operation is controlled by a power reduction-compatible rotation speed that is higher than the appropriate rotation speed during normal operation by a certain number, and measured. When the driven current value exceeds a second reference current value that is set higher than the first reference current value, the rotation of the outdoor fan is stopped, and the air blower for an air conditioner is characterized in that Control device. 【請求項５】 暖房運転時、前記運転制御手段はさら
に、前記電流値計測手段にて計測される駆動電流値が前
記第１基準電流値を超えた場合には、前記室内側ファン
の中速運転時の回転数を前記正常運転時の適正回転数よ
り一定数だけ高くした減電対応回転数にて制御すること
により、少なくとも低速運転時と中速運転時との回転比
率を適正に保つことを特徴とする請求項１ないし請求項
４に記載の空気調和機の送風制御装置。5. During the heating operation, the operation control means further controls the indoor speed of the indoor fan when the drive current value measured by the current value measuring means exceeds the first reference current value. Maintaining an appropriate rotation ratio at least during low-speed operation and during medium-speed operation by controlling the rotation speed during operation by a deceleration-compatible rotation speed that is higher than the appropriate rotation speed during normal operation by a certain number. The blower control device for an air conditioner according to any one of claims 1 to 4.
JP2001214699A 2001-07-16 2001-07-16 Air supply controller of air conditioner Pending JP2003028485A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001214699A JP2003028485A (en) 2001-07-16 2001-07-16 Air supply controller of air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001214699A JP2003028485A (en) 2001-07-16 2001-07-16 Air supply controller of air conditioner

Publications (1)

Publication Number Publication Date
JP2003028485A true JP2003028485A (en) 2003-01-29

Family

ID=19049468

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001214699A Pending JP2003028485A (en) 2001-07-16 2001-07-16 Air supply controller of air conditioner

Country Status (1)

Country Link
JP (1) JP2003028485A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108870682A (en) * 2018-07-17 2018-11-23 奥克斯空调股份有限公司 A kind of air conditioner load control method and device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108870682A (en) * 2018-07-17 2018-11-23 奥克斯空调股份有限公司 A kind of air conditioner load control method and device

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