JP4735385B2 - Air conditioner - Google Patents
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- JP4735385B2 JP4735385B2 JP2006110665A JP2006110665A JP4735385B2 JP 4735385 B2 JP4735385 B2 JP 4735385B2 JP 2006110665 A JP2006110665 A JP 2006110665A JP 2006110665 A JP2006110665 A JP 2006110665A JP 4735385 B2 JP4735385 B2 JP 4735385B2
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- 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
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- 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
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Description
本発明は室内ファン回転数制御手段を有する空気調和機に関するものである。 The present invention relates to an air conditioner having indoor fan rotation speed control means.
従来、この種の空気調和機では室内ファンの回転数はファン回転速度が超低速、低速、中速等となるようにステップ制御されており、室内熱交換機温度及び遠隔制御装置にて設定された目標回転数によって制御されていた。具体的には室内熱交換機温度を複数の温度領域に分け、温度領域に応じて室内ファン回転数の最適値と最大値を規制し、温度領域が変化した際には回転数を即時変化していた。また、遠隔制御装置にて設定された目標回転
数と温度領域に応じて設定された室内ファン回転数の最適値が異なる場合には、温度領域に応じて決められた最大値以下になるよう規制していた（例えば、特許文献１参照）。
Conventionally, in this type of air conditioner, the rotation speed of the indoor fan is step-controlled so that the fan rotation speed becomes ultra low speed, low speed, medium speed, etc., and is set by the indoor heat exchanger temperature and the remote control device It was controlled by the target speed. Specifically, the indoor heat exchanger temperature is divided into multiple temperature ranges, and the optimum and maximum values of the indoor fan rotation speed are regulated according to the temperature range, and when the temperature range changes, the rotation speed changes immediately. It was. In addition, if the target rotational speed set by the remote control device and the optimum value of the indoor fan rotational speed set according to the temperature range are different, regulation is made so that it is less than the maximum value determined according to the temperature range. (For example, refer to Patent Document 1).
図５は、従来の室内熱交換器温度と室内ファン回転数との変化を表すタイムチャートである。図５に示すように、縦軸に室内熱交換器温度と室内ファン回転数を、横軸に時間を表し、室内熱交換器温度が上昇し、第１の温度領域から第２の温度領域に変化すると、この温度領域の変化に応じて、室内ファン回転数がＮ１からＮ２へステップ変化する。逆に、室内熱交換器温度が下降し、第２の温度領域から第１の温度領域に変化すると、この温度領域の変化に応じて、室内ファン回転数がＮ２からＮ１へステップ変化する。 FIG. 5 is a time chart showing changes in the conventional indoor heat exchanger temperature and the indoor fan speed. As shown in FIG. 5, the vertical axis represents the indoor heat exchanger temperature and the indoor fan rotation speed, the horizontal axis represents time, the indoor heat exchanger temperature rises, and the temperature ranges from the first temperature range to the second temperature range. When it changes, the indoor fan rotation speed changes stepwise from N1 to N2 in accordance with the change in the temperature region. Conversely, when the indoor heat exchanger temperature decreases and changes from the second temperature range to the first temperature range, the indoor fan rotation speed changes stepwise from N2 to N1 in accordance with the change in the temperature range.
また、この構成では、温度領域が変化した際、室内ファン回転数は即時に目標回転数にステップ変化するため、室内熱交換器における放熱量が急激に増減して室内熱交換器温度が急激に変化し、再び温度領域が変化して元に戻るため温度境界前後で室内熱交換器温度がハンチングを起こし、それに伴い室内ファン回転数も安定しないという課題を有しており、この課題を解決する一対策案として、室内熱交換器温度が一定条件の際に室内ファン回転数が急激に変化する場合、回転数変化量やその変更周期を規制し室内熱交換器温度の急激な温度変化を抑え、さらに、室内ファン回転数の変更時の室内熱交換器温度や回転数等の状態により回転数変化量や変更周期を可変とすることにより、温度領域間を頻繁にハンチングする事を抑えて目標回転数まで移行する空気調和機があった。係る先行技術は、非公開自社出願特願２００５−３０６９１５に記載されたもので未だ未公開であり、文献公知発明に係るものではない。
しかしながら、前記従来の構成では、室内熱交換器温度のみに基づいて室内ファンの回転数変化の所定回転数やその変更の所定時間を規制し室内熱交換器温度の急激な温度変化を抑えたために、周囲の状況によっては必要以上の規制がかかり、室内熱交換器温度がなかなか上がらないという問題が起こる可能性があった。 However, in the above-described conventional configuration, since the predetermined rotation speed of the indoor fan and the predetermined time for the change are restricted based on only the indoor heat exchanger temperature, the rapid temperature change of the indoor heat exchanger temperature is suppressed. Depending on the surrounding conditions, there is a possibility that the restriction of more than necessary is applied, and the problem that the temperature of the indoor heat exchanger does not rise easily.
本発明は、前記従来の課題を解決するもので、必要最小限の規制で室内熱交換器の急激な温度変化を抑え、室内熱交換器温度を最適に制御す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-described conventional problems, and provides an air conditioner that suppresses a rapid temperature change of an indoor heat exchanger with the minimum necessary regulations and optimally controls the indoor heat exchanger temperature. Objective.
前記従来の課題を解決するために、本発明の空気調和機は、室内ファン回転数が変化する場合、その時点の室内気温や室外気温により室内ファンの回転数変化の所定回転数やその変更の所定時間を可変とするもので、これによって、必要最小限の規制で、室内ファン回転数が急激に変化することなく目標回転数まで移行し、室内熱交換器の急激な温度変化を抑え、温度領域間を頻繁にハンチングする事を抑えつつ室内熱交換器温度上昇を不必要に妨げずに室内ファン回転数の安定性を向上させ、快適性の向上が可能となる。 In order to solve the above-mentioned conventional problems, the air conditioner of the present invention, when the indoor fan rotational speed changes, changes the predetermined rotational speed of the indoor fan rotational speed or the change thereof depending on the indoor air temperature or the outdoor air temperature at that time. The predetermined time is variable, which allows the indoor fan rotation speed to change to the target rotation speed without abrupt changes with the minimum necessary regulation, suppressing sudden temperature changes in the indoor heat exchanger, It is possible to improve the stability of the indoor fan rotation speed without unnecessarily hindering the indoor heat exchanger temperature rise while suppressing frequent hunting between areas, and to improve comfort.
本発明の空気調和機は、室内熱交換器温度変化時に温度領域間を頻繁にハンチングする事を抑えつつ室内熱交換器温度上昇を不必要に妨げずに、室内ファン回転数の安定性を向上させ、快適性を向上させることができる。 The air conditioner of the present invention improves the stability of the indoor fan rotation speed without unnecessarily preventing the temperature rise of the indoor heat exchanger while suppressing frequent hunting between the temperature ranges when the temperature of the indoor heat exchanger changes. And improve comfort.
第１の発明は、室内熱交換器と、室内ファンと、室内熱交換器の温度、室内気温、室外気温を検出する温度検出手段と、遠隔制御装置と、遠隔制御装置にて設定された室内ファ
ン目標回転数と室内熱交換器温度とから室内ファンの回転数を制御する回転数制御手段とを備え、室内熱交換器温度が第１の温度領域から第２の温度領域へ変化する時、室内ファンの回転数を室内ファン目標回転数まで所定の回転数ΔＮずつ所定時間ｔａで変更させ、冷房運転時において室内気温が基準値Ｔｃｓｔｄ以下の場合はΔＮを大きくし、暖房運転時において室内気温が基準値Ｔｈｓｔｄ以上の場合はΔＮを大きくすることで、室内熱交換器温度の変動を抑え室内ファンの安定性を向上させて快適性を向上させることができる。また、室内気温と室内熱交換器温度との差が小さい場合には室内ファン回転数上昇による室内熱交換器温度への影響が小さいので、前記所定回転数ΔＮを大きくするように補正することで、室内熱交換器温度の変動を抑え室内ファンの安定性を向上させて、かつ、より早く目標の回転数に到達させることができる。
The first invention includes an indoor heat exchanger, an indoor fan, temperature detecting means for detecting the temperature of the indoor heat exchanger, the indoor air temperature, and the outdoor air temperature, a remote control device, and a room set by the remote control device. Fah
A rotation speed control means for controlling the rotation speed of the indoor fan from the target rotation speed and the indoor heat exchanger temperature, and when the indoor heat exchanger temperature changes from the first temperature range to the second temperature range, The number of rotations of the indoor fan is changed by the predetermined number of rotations ΔN by a predetermined time ta up to the target number of rotations of the indoor fan. Is greater than the reference value Thstd, by increasing ΔN, the fluctuation of the indoor heat exchanger temperature can be suppressed, the stability of the indoor fan can be improved, and the comfort can be improved. Further, when the difference between the indoor air temperature and the indoor heat exchanger temperature is small, the effect on the indoor heat exchanger temperature due to the increase in the indoor fan rotational speed is small. Thus, it is possible to suppress the fluctuation of the indoor heat exchanger temperature, improve the stability of the indoor fan, and reach the target rotational speed more quickly.
第２の発明は、冷房運転時において室内気温が基準値Ｔｃｓｔｄ以下の場合は、所定時間ｔａを小さくし、暖房運転時において室内気温が基準値Ｔｈｓｔｄ以上の場合は、所定時間ｔａを小さくすることで、室内熱交換器温度の変動を抑え室内ファンの安定性を向上させて快適性を向上させることができる。また、室内気温と室内熱交換器温度との差が小さい場合には室内ファン回転数上昇による室内熱交換器温度への影響が小さいので、前記所定時間ｔａを短くするように補正することで、室内熱交換器温度の変動を抑え室内ファンの安定性を向上させて、かつ、より早く目標の回転数に到達させることができる。 The second invention reduces the predetermined time ta when the room temperature is below the reference value Tcstd during cooling operation, and decreases the predetermined time ta when the room temperature is above the reference value Thstd during heating operation. Thus, it is possible to improve the comfort by suppressing the fluctuation of the indoor heat exchanger temperature and improving the stability of the indoor fan. In addition, when the difference between the indoor air temperature and the indoor heat exchanger temperature is small, the influence on the indoor heat exchanger temperature due to the increase in the rotational speed of the indoor fan is small, so by correcting so that the predetermined time ta is shortened, suppressing variation in the indoor heat exchanger temperature to improve the stability of the indoor fan, and Ru can be made to reach the rotational speed of the faster target.
以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
（実施の形態１）
図２は、本発明の第１の実施の形態における空気調和機の概略の一部破断斜視図を示している。
(Embodiment 1)
FIG. 2 shows a partially broken perspective view of the outline of the air conditioner according to the first embodiment of the present invention.
図２において、空気調和機本体５に吸い込まれた室内空気は、室内熱交換器１を通過する際に冷媒と熱交換されて温度変化し、室内ファン２により、再び室内に吹出される。吹出される風の強さは、温度検出手段３によって検出された室内熱交換器温度等から空気調和機の制御装置（図示せず）によって最適値が指示される他、ユーザが遠隔制御装置４で直接、微風、弱風、強風等、何段階かに分けられた強さの内、好みの強さを指示することもできる。
In FIG. 2, the indoor air sucked into the air conditioner body 5 undergoes heat exchange with the refrigerant when passing through the indoor heat exchanger 1, changes in temperature, and is blown out into the room again by the
指示された風の強さに応じて、室内ファン２の目標回転数は、微風であれば超低速回転、弱風であれば低速回転、等のように決められている。
In accordance with the instructed wind intensity, the target rotational speed of the
更に具体的には室内熱交換機温度を複数の温度領域に分け、温度領域に応じて室内ファン回転数の最適値と最大値、最小値を定め、温度領域が変化した際には回転数を最適値となるように変化させる。この変化のフローについては後述する。 More specifically, the indoor heat exchanger temperature is divided into a plurality of temperature ranges, and the optimum value, maximum value, and minimum value of the indoor fan speed are determined according to the temperature range. When the temperature range changes, the rotation speed is optimized. Change to a value. The flow of this change will be described later.
また、遠隔制御装置４にて設定された目標回転数と温度領域に応じて設定された室内ファン回転数の最適値が異なる場合には、温度領域に応じて決められた最大値以下になるよう規制する。
In addition, if the target rotational speed set by the
図１は、本発明の第１の実施の形態における室内配管温度領域が第１の温度領域から第２の温度領域に変化した場合の制御のフローチャートを示している。例えば、第１の温度領域が低温領域で、第２の温度領域が高温領域であれば、室内配管温度が上昇している場合となる。 FIG. 1 shows a flow chart of control when the indoor piping temperature region in the first embodiment of the present invention changes from the first temperature region to the second temperature region. For example, if the first temperature region is a low temperature region and the second temperature region is a high temperature region, the indoor piping temperature is increased.
図１において、室内ファン運転時、ＳＴ１で室内熱交換器温度を計測し、第１の温度領
域のままである場合には、ＳＴ２へ進み室内ファン回転数の最大値規制を行う。
In FIG. 1, during indoor fan operation, the temperature of the indoor heat exchanger is measured in ST1, and when the temperature remains in the first temperature range, the process proceeds to ST2 and the maximum value of the indoor fan rotation speed is regulated.
室内熱交換器温度が上昇し、第１の温度領域から第２の温度領域へ入った場合、ＳＴ３へ進む。ＳＴ３では、最大値規制を解除し遠隔制御装置により指定された室内ファン回転数を目標回転数とする。 When the indoor heat exchanger temperature rises and enters the second temperature region from the first temperature region, the process proceeds to ST3. In ST3, the maximum value restriction is canceled and the indoor fan rotation speed designated by the remote control device is set as the target rotation speed.
ＳＴ４で現在の室内ファン回転数と目標回転数を比較し、等しい場合にはＳＴ１１へ進みファン回転数を維持する、一方、異なる場合には、室内ファン回転数変更の所定時間ｔａと所定回転数ΔＮを決定する工程へと進む。 In ST4, the current indoor fan rotational speed is compared with the target rotational speed. If equal, the process proceeds to ST11 and the fan rotational speed is maintained. If different, the predetermined time ta and the predetermined rotational speed for changing the indoor fan rotational speed are obtained. Proceed to the step of determining ΔN.
ＳＴ５で室内ファン回転数と目標回転数を比較し、差異が小さい等、所定時間ｔａと回転数ΔＮが可変でない場合は、ＳＴ７へ進み室内ファン回転数を１ステップで変更するよう決定する。即ち、所定時間ｔａ＝０、所定の回転数ΔＮ＝（目標回転数）−（現在の回転数）である。 In ST5, the indoor fan rotational speed is compared with the target rotational speed. If the predetermined time ta and the rotational speed ΔN are not variable, for example, if the difference is small, the process proceeds to ST7 and it is determined to change the indoor fan rotational speed in one step. That is, the predetermined time ta = 0, the predetermined rotational speed ΔN = (target rotational speed) − (current rotational speed).
また、可変である場合には、ＳＴ６で領域変更時の室内熱交換器温度の変化率を計測し、ＳＴ７で刻み値である所定回転数ΔＮと所定時間ｔａを決定する。 If it is variable, the rate of change of the indoor heat exchanger temperature at the time of changing the region is measured in ST6, and the predetermined rotational speed ΔN and the predetermined time ta as step values are determined in ST7.
次からのステップでは、その時点の室内気温と室内熱交換器温度との差が大きい場合には所定回転数ΔＮを小さく、差が小さい場合には所定回転数ΔＮを大きくするように補正する。若しくはその時点の室内気温と室内熱交換器温度との差が大きい場合には所定時間ｔａを長く、差が小さい場合には所定時間ｔａを短くするように補正する。 In the next step, when the difference between the room temperature at that time and the indoor heat exchanger temperature is large, the predetermined rotational speed ΔN is decreased, and when the difference is small, the predetermined rotational speed ΔN is corrected to be increased. Alternatively, when the difference between the room temperature at that time and the indoor heat exchanger temperature is large, the predetermined time ta is lengthened, and when the difference is small, the predetermined time ta is shortened.
この際に、空気調和機の運転モードが冷房系運転か暖房運転かを判断し、その時点の室内気温と基準値との比較に応じて、所定回転数ΔＮ若しくは所定時間ｔａの補正をするように簡略化してもよい。室内熱交換器温度は運転モードによってある一定の範囲の温度になるよう制御されており、例えば冷房系運転であれば室内熱交換器温度は低温に制御され、暖房運転であれば高温に制御されているのであるから、その際の室内気温が基準値より高いか低いかによって、室内気温と室内熱交換器温度との差が大きいか低いかを簡易に判断することができるからである。 At this time, it is determined whether the operation mode of the air conditioner is the cooling system operation or the heating operation, and the predetermined rotation speed ΔN or the predetermined time ta is corrected according to the comparison between the room temperature at that time and the reference value. It may be simplified. The indoor heat exchanger temperature is controlled to be within a certain range depending on the operation mode. For example, the indoor heat exchanger temperature is controlled to a low temperature in the cooling system operation, and is controlled to a high temperature in the heating operation. Therefore, it is possible to easily determine whether the difference between the room temperature and the indoor heat exchanger temperature is large or low depending on whether the room temperature at that time is higher or lower than the reference value.
具体的なステップを以下に記載する。ＳＴ３１で空気調和機の運転モードが冷房系運転か暖房運転か判断し、冷房系運転であればＳＴ３２へ、暖房運転であればＳＴ３３へ進み、室内気温Ｔｉｎを温度検出手段で検出し、室内気温Ｔｉｎと基準値との比較に応じて、ＳＴ３４で所定回転数ΔＮ、所定時間ｔａを補正する。 Specific steps are described below. In ST31, it is determined whether the operation mode of the air conditioner is a cooling system operation or a heating operation. If it is a cooling system operation, the process proceeds to ST32, and if it is a heating operation, the process proceeds to ST33, and the room temperature Tin is detected by the temperature detection means. In step ST34, the predetermined rotational speed ΔN and the predetermined time ta are corrected in accordance with the comparison between Tin and the reference value.
ＳＴ３２で、室内気温Ｔｉｎが基準値Ｔｃｓｔｄ以下の場合には、室内熱交換器温度が元々低いことから室内気温Ｔｉｎと室内熱交換器温度との差は小さいとみなし得るので室内ファン回転数上昇に伴う室内熱交換器温度への影響は小さいと判断して、ＳＴ３４で所定回転数ΔＮに補正値ΔＮｃを加え、所定時間ｔａから補正値ｔｃを減ずる。 In ST32, when the indoor air temperature Tin is equal to or less than the reference value Tcstd, since the indoor heat exchanger temperature is originally low, it can be considered that the difference between the indoor air temperature Tin and the indoor heat exchanger temperature is small. Accordingly, it is determined that the influence on the temperature of the indoor heat exchanger is small, and in ST34, the correction value ΔNc is added to the predetermined rotational speed ΔN, and the correction value tc is decreased from the predetermined time ta.
ＳＴ３３で、室内気温Ｔｉｎが基準値Ｔｈｓｔｄ以上の場合には、室内熱交換器温度が元々高いことから室内気温Ｔｉｎと室内熱交換器温度との差は小さいとみなし得るので室内ファン回転数上昇に伴う室内熱交換器温度への影響は小さいと判断して、ＳＴ３４で所定回転数ΔＮに補正値ΔＮｈを加え、所定時間ｔａから補正値ｔｈを減ずる。 In ST33, when the indoor air temperature Tin is equal to or higher than the reference value Thstd, the indoor heat exchanger temperature is originally high, and therefore the difference between the indoor air temperature Tin and the indoor heat exchanger temperature can be regarded as small. Accordingly, it is determined that the influence on the temperature of the indoor heat exchanger is small, and in ST34, the correction value ΔNh is added to the predetermined rotational speed ΔN, and the correction value th is decreased from the predetermined time ta.
一方、ＳＴ３２で室内気温Ｔｉｎが基準値Ｔｃｓｔｄより高い場合、若しくはＳＴ３３で室内気温Ｔｉｎが基準値Ｔｈｓｔｄより低い場合には、室内気温Ｔｉｎと室内熱交換器温度との差は小さくないとみなし得るので室内ファン回転数上昇に伴う室内熱交換器温度への影響は小さくないと判断して、補正を加えずにＳＴ８へ進む。 On the other hand, if the room temperature Tin is higher than the reference value Tcstd in ST32 or if the room temperature Tin is lower than the reference value Thstd in ST33, it can be considered that the difference between the room temperature Tin and the indoor heat exchanger temperature is not small. It is determined that the influence on the indoor heat exchanger temperature due to the increase in the indoor fan rotation speed is not small, and the process proceeds to ST8 without correction.
ＳＴ３４で決定された室内ファン回転数の変更方法により、ＳＴ８で室内ファン回転数の変更を実施する。そして、ＳＴ９で、室内ファン回転数が目標回転数に達した時点でＳＴ１１へ進み、室内ファン回転数を維持する。 The indoor fan speed is changed in ST8 by the method for changing the indoor fan speed determined in ST34. In ST9, when the indoor fan rotational speed reaches the target rotational speed, the process proceeds to ST11, and the indoor fan rotational speed is maintained.
ＳＴ９で目標回転数と異なる場合にはＳＴ１０へ進む。ＳＴ１０では、室内熱交換器温度の変化率を測定し、ＳＴ７で決定された室内ファン回転数の変更方法から予測される室内熱交換器温度の予測変化率と同等の場合にはＳＴ８に戻り室内ファン回転数変更を継続する。予測変化率と同等でない場合には、ＳＴ７へ戻り、回転数変更の所定時間ｔａと所定回転数ΔＮを再設定し、再びＳＴ８へ進む。 If the target rotational speed is different from ST9, the process proceeds to ST10. In ST10, the rate of change of the indoor heat exchanger temperature is measured, and if it is equal to the predicted rate of change of the indoor heat exchanger temperature predicted from the method for changing the indoor fan rotation speed determined in ST7, the process returns to ST8 and returns to the room. Continue to change fan speed. If it is not equal to the predicted change rate, the process returns to ST7, the predetermined time ta for changing the rotation speed and the predetermined rotation speed ΔN are reset, and the process again goes to ST8.
例えば、測定された室内熱交換器温度の変化率が予測変化率よりも大きい場合、ハンチングが起こる可能性が高いと判断し、室内熱交換器温度の低下を避けるため、ＳＴ７へ戻り室内熱交換器温度の変化率が小さくなるよう回転数変更の所定時間ｔａを長くし、所定回転数ΔＮを小さくするように再設定する。 For example, if the measured rate of change of the indoor heat exchanger temperature is larger than the predicted rate of change, it is determined that hunting is likely to occur, and the process returns to ST7 to avoid a decrease in the indoor heat exchanger temperature. The predetermined time ta for changing the rotational speed is lengthened so that the rate of change in the chamber temperature becomes small, and the predetermined rotational speed ΔN is set again to be small.
尚、図１では室内熱交換器温度が上昇し、第１の温度領域から第２の温度領域へ入った場合を説明したが、室内熱交換器温度が下降し、第２の温度領域から第１の温度領域へ入った場合にもフローチャートはほぼ同様となる。 In FIG. 1, the case where the indoor heat exchanger temperature rises and enters the second temperature range from the first temperature range has been described. However, the indoor heat exchanger temperature falls and the second temperature range decreases from the second temperature range. The flow chart is almost the same when the temperature range of 1 is entered.
図３は、本発明の第１の実施の形態における室内熱交換器温度と室内ファン回転数との変化を表すタイムチャートを示すものである。 FIG. 3 is a time chart showing changes in the indoor heat exchanger temperature and the indoor fan rotation speed in the first embodiment of the present invention.
図３に示すように、縦軸に室内熱交換器温度と室内ファン回転数を、横軸に時間を表すもので、室内熱交換器温度が上昇し、第１の温度領域から第２の温度領域に変化すると、この温度領域の変化に応じて、室内ファン回転数が現在の室内ファン回転数Ｎ１から目標回転数Ｎ２へ変化するが、Ｎ１からＮ２へ１ステップで変化するのではなく、領域変更時の室内熱交換器温度の変化率を計測し、所定時間ｔａ内に所定回転数ΔＮずつ室内ファン回転数を増加させ、更に室内気温と室内熱交換器温度との差に応じて所定時間ｔａ、所定回転数ΔＮに補正を加えることでハンチングを防ぎながら、最終的に室内ファン回転数がＮ２となるように変化させている。 As shown in FIG. 3, the vertical axis represents the indoor heat exchanger temperature and the indoor fan rotation speed, and the horizontal axis represents time. The indoor heat exchanger temperature rises, and the second temperature from the first temperature range. When changing to the region, the indoor fan rotation speed changes from the current indoor fan rotation speed N1 to the target rotation speed N2 in accordance with the change of the temperature region, but instead of changing from N1 to N2 in one step, The change rate of the indoor heat exchanger temperature at the time of change is measured, the indoor fan rotation speed is increased by a predetermined rotation speed ΔN within a predetermined time ta, and further, the predetermined time is determined according to the difference between the indoor air temperature and the indoor heat exchanger temperature. ta, by correcting the predetermined rotational speed ΔN, the indoor fan rotational speed is finally changed to N2 while preventing hunting.
以上のように、本実施の形態においては室内熱交換器温度が第１の温度領域から第２の温度領域になった時、室内ファンの回転数を遠隔制御装置にて設定された目標回転数まで所定の回転数ΔＮずつ所定時間ｔａで変更させ、更に室内気温と室内熱交換器温度との差に応じて所定時間ｔａ、所定回転数ΔＮに補正を加えることにより、室内ファン回転数を目標値までに徐々に変化させることで、室内熱交換器温度の急激な変化に伴う室内ファン回転数のハンチングを防ぐとともに必要以上の規制を避け早く目標回転数まで到達することができ、室内ファンの安定性を向上させて快適性を上昇させることができる。 As described above, in the present embodiment, when the indoor heat exchanger temperature changes from the first temperature range to the second temperature range, the indoor fan rotation speed is set to the target rotation speed set by the remote control device. By changing the predetermined rotational speed ΔN by a predetermined time ta until the indoor fan rotational speed reaches the target by correcting the predetermined time ta and the predetermined rotational speed ΔN according to the difference between the room temperature and the indoor heat exchanger temperature. By gradually changing the value to the value, it is possible to prevent the hunting of the indoor fan rotation speed due to a sudden change in the indoor heat exchanger temperature, avoid the excessive regulation, and quickly reach the target rotation speed. Stability can be improved and comfort can be increased.
（実施の形態２）
図４は、本発明の第２の実施の形態における室内配管温度領域が第１の温度領域から第２の温度領域に変化した場合の制御のフローチャートを示している。例えば、第１の温度領域が低温領域で、第２の温度領域が高温領域であれば、室内配管温度が上昇している場合となる。
(Embodiment 2)
FIG. 4 shows a flowchart of control when the indoor piping temperature region in the second embodiment of the present invention changes from the first temperature region to the second temperature region. For example, if the first temperature region is a low temperature region and the second temperature region is a high temperature region, the indoor piping temperature is increased.
図４において、ＳＴ１からＳＴ７までは本発明の第１の実施の形態の図１のＳＴ１からＳＴ７までと同じなので、説明を省略する。 In FIG. 4, ST1 to ST7 are the same as ST1 to ST7 of FIG. 1 of the first embodiment of the present invention, and thus description thereof is omitted.
次からのステップでは、その時点の室外気温と室内熱交換器温度との差が大きい場合に
は所定回転数ΔＮを小さく、差が小さい場合には所定回転数ΔＮを大きくするように補正する。若しくはその時点の室外気温と室内熱交換器温度との差が大きい場合には所定時間ｔａを長く、差が小さい場合には所定時間ｔａを短くするように補正する。
In the next step, when the difference between the outdoor air temperature and the indoor heat exchanger temperature at that time is large, the predetermined rotational speed ΔN is reduced, and when the difference is small, the predetermined rotational speed ΔN is increased. Or when the difference between the outdoor air temperature and the indoor heat exchanger temperature at that time is large, the predetermined time ta is lengthened, and when the difference is small, the predetermined time ta is shortened.
この際に、空気調和機の運転モードが冷房系運転か暖房運転かを判断し、その時点の室外気温と基準値との比較に応じて、所定回転数ΔＮ若しくは所定時間ｔａの補正をするように簡略化してもよい。室内熱交換器温度は運転モードによってある一定の範囲の温度になるよう制御されており、例えば冷房系運転であれば室内熱交換器温度は低温に制御され、暖房運転であれば高温に制御されているのであるから、その際の室外気温が基準値より高いか低いかによって、室外気温と室内熱交換器温度との差が大きいか低いかを簡易に判断することができるからである。 At this time, it is determined whether the operation mode of the air conditioner is the cooling system operation or the heating operation, and the predetermined rotational speed ΔN or the predetermined time ta is corrected according to the comparison between the outdoor temperature at that time and the reference value. It may be simplified. The indoor heat exchanger temperature is controlled to be within a certain range depending on the operation mode. For example, the indoor heat exchanger temperature is controlled to a low temperature in the cooling system operation, and is controlled to a high temperature in the heating operation. Therefore, it is possible to easily determine whether the difference between the outdoor air temperature and the indoor heat exchanger temperature is large or low depending on whether the outdoor air temperature at that time is higher or lower than the reference value.
具体的なステップを以下に記載する。ＳＴ４１で空気調和機の運転モードが冷房系運転か暖房運転か判断し、冷房系運転であればＳＴ４２へ、暖房運転であればＳＴ４３へ進み、室外気温Ｔｏｕｔを温度検出手段で検出し、室外気温Ｔｏｕｔと基準値との比較に応じて、ＳＴ４４で所定回転数ΔＮ、所定時間ｔａを補正する。 Specific steps are described below. In ST41, it is determined whether the operation mode of the air conditioner is the cooling system operation or the heating operation. If it is the cooling system operation, the process proceeds to ST42, and if it is the heating operation, the process proceeds to ST43, and the outdoor temperature Tout is detected by the temperature detection means. In accordance with the comparison between Tout and the reference value, the predetermined rotational speed ΔN and the predetermined time ta are corrected in ST44.
ＳＴ４２で、室外気温Ｔｏｕｔが基準値Ｔｃｓｔｄ以上の場合には、室内熱交換器温度が元々低いことから室外気温Ｔｏｕｔと室内熱交換器温度との差は大きいとみなし得、また室外気温Ｔｏｕｔが高く室外熱交換器温度は上昇し、その影響で室内熱交換器温度は上昇傾向にあるため、室内ファン回転数上昇に伴う室内熱交換器温度への影響は大きいと判断して、ＳＴ４４で所定回転数ΔＮから補正値ΔＮｃを減じ、所定時間ｔａに補正値ｔｃを加える。 In ST42, when the outdoor temperature Tout is equal to or higher than the reference value Tcstd, it can be considered that the difference between the outdoor temperature Tout and the indoor heat exchanger temperature is large because the indoor heat exchanger temperature is originally low, and the outdoor temperature Tout is high. Since the outdoor heat exchanger temperature rises and the indoor heat exchanger temperature tends to rise due to the rise, it is judged that the influence on the indoor heat exchanger temperature due to the increase in the indoor fan rotation speed is large, and the predetermined rotation is performed in ST44. The correction value ΔNc is subtracted from the number ΔN, and the correction value tc is added to the predetermined time ta.
ＳＴ４３で、室外気温Ｔｏｕｔが基準値Ｔｈｓｔｄ以下の場合には、室内熱交換器温度が元々高いことから室外気温Ｔｏｕｔと室内熱交換器温度との差は大きいとみなし得、また室外気温Ｔｏｕｔが低く室外熱交換器温度は低下し、その影響で室内熱交換器温度は低下傾向になるため、室内ファン回転数上昇に伴う室内熱交換器温度への影響は大きいと判断して、ＳＴ４４で所定回転数ΔＮから補正値ΔＮｈを減じ、所定時間ｔａに補正値ｔｃを加える。 In ST43, when the outdoor temperature Tout is equal to or lower than the reference value Thstd, the indoor heat exchanger temperature is originally high, so that the difference between the outdoor temperature Tout and the indoor heat exchanger temperature can be regarded as large, and the outdoor temperature Tout is low. Since the outdoor heat exchanger temperature decreases and the indoor heat exchanger temperature tends to decrease due to the influence, it is determined that the influence on the indoor heat exchanger temperature due to the increase in the indoor fan rotation speed is large, and the predetermined rotation is performed in ST44. The correction value ΔNh is subtracted from the number ΔN, and the correction value tc is added to the predetermined time ta.
一方、ＳＴ４２で室外気温Ｔｏｕｔが基準値Ｔｃｓｔｄより低い場合、若しくはＳＴ４３で室外気温Ｔｏｕｔが基準値Ｔｈｓｔｄより高い場合には、室外気温Ｔｏｕｔと室内熱交換器温度との差は大きくないとみなし得るので室内ファン回転数上昇に伴う室内熱交換器温度への影響は大きくないと判断して、補正を加えずにＳＴ８へ進む。 On the other hand, if the outdoor temperature Tout is lower than the reference value Tcstd in ST42, or if the outdoor temperature Tout is higher than the reference value Thstd in ST43, it can be considered that the difference between the outdoor temperature Tout and the indoor heat exchanger temperature is not large. It is determined that the influence on the indoor heat exchanger temperature due to the increase in the indoor fan rotation speed is not large, and the process proceeds to ST8 without correction.
ＳＴ４４で決定された室内ファン回転数の変更方法により、ＳＴ８で室内ファン回転数の変更を実施する。そして、ＳＴ９で、室内ファン回転数が目標回転数に達した時点でＳＴ１１へ進み、室内ファン回転数を維持する。 The indoor fan speed is changed in ST8 by the method for changing the indoor fan speed determined in ST44. In ST9, when the indoor fan rotational speed reaches the target rotational speed, the process proceeds to ST11, and the indoor fan rotational speed is maintained.
ＳＴ９以降も本発明の第１の実施の形態の図１のＳＴ９以降と同じなので、説明を省略する。 Since ST9 and subsequent steps are the same as ST9 and subsequent steps in FIG. 1 of the first embodiment of the present invention, description thereof will be omitted.
尚、図４では室内熱交換器温度が上昇し、第１の温度領域から第２の温度領域へ入った場合を説明したが、室内熱交換器温度が下降し、第２の温度領域から第１の温度領域へ入った場合にもフローチャートはほぼ同様となる。 Although FIG. 4 illustrates the case where the indoor heat exchanger temperature rises and enters the second temperature range from the first temperature range, the indoor heat exchanger temperature falls and the second temperature range starts from the second temperature range. The flow chart is almost the same when the temperature range of 1 is entered.
以上のように、本実施の形態においては室内熱交換器温度が第１の温度領域から第２の温度領域になった時、室内ファンの回転数を遠隔制御装置にて設定された目標回転数まで所定の回転数ΔＮずつ所定時間ｔａで変更させ、更に室外気温と室内熱交換器温度との差
に応じて所定時間ｔａ、所定回転数ΔＮに補正を加えることにより、室内ファン回転数を目標値までに徐々に変化させることで、室内熱交換器温度の急激な変化に伴うハンチングを防ぐことができ、室内ファン回転数のハンチングを防ぐとともに必要以上の規制を避け早く目標回転数まで到達することができ、室内ファンの安定性を向上させて快適性を上昇させることができる。
As described above, in the present embodiment, when the indoor heat exchanger temperature changes from the first temperature range to the second temperature range, the indoor fan rotation speed is set to the target rotation speed set by the remote control device. By changing the predetermined rotational speed ΔN by predetermined time ta until the indoor fan rotational speed reaches the target by correcting the predetermined time ta and the predetermined rotational speed ΔN according to the difference between the outdoor air temperature and the indoor heat exchanger temperature. By gradually changing the value to the value, hunting associated with a sudden change in the indoor heat exchanger temperature can be prevented, and hunting of the indoor fan speed can be prevented, and the target speed can be reached quickly while avoiding excessive regulation. It is possible to improve the stability by improving the stability of the indoor fan.
以上のように、本発明にかかる空気調和機は、熱源と送風ファンを有する機器のファンの安定性を向上させるので、ファンヒーター等の用途にも適用できる。 As described above, the air conditioner according to the present invention improves the stability of a fan of a device having a heat source and a blower fan, and thus can be applied to uses such as a fan heater.
１ 室内熱交換器
２ 室内ファン
３ 温度検出手段
４ 遠隔制御装置
５ 空気調和機本体
DESCRIPTION OF SYMBOLS 1
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| CN104110794B (en) * | 2014-06-27 | 2017-06-16 | 广东美的制冷设备有限公司 | Air-conditioning and its wind speed control method and device |
| CN108195038A (en) * | 2017-11-29 | 2018-06-22 | 珠海格力电器股份有限公司 | Air conditioner air outlet control method and device, storage medium and air conditioner |
| CN115151763A (en) * | 2020-03-05 | 2022-10-04 | 三菱电机株式会社 | air conditioner |
| CN111550901A (en) * | 2020-04-10 | 2020-08-18 | 宁波奥克斯电气股份有限公司 | An air conditioner control method, control device, storage medium and air conditioner |
| CN113970172B (en) * | 2020-07-24 | 2023-04-25 | 广东美的制冷设备有限公司 | Air conditioner, radiation control method and device thereof and computer storage medium |
| CN116147170B (en) * | 2022-09-09 | 2026-03-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioning control methods, devices, air conditioners, storage media and computer program products |
| CN120759723B (en) * | 2025-07-22 | 2026-01-27 | 国华爱依斯（黄骅）风电有限公司 | Automatic water supplementing device of water cooling system of wind driven generator and pressure regulating system |
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