JP2006118731A - Air conditioner - Google Patents

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JP2006118731A
JP2006118731A JP2004304104A JP2004304104A JP2006118731A JP 2006118731 A JP2006118731 A JP 2006118731A JP 2004304104 A JP2004304104 A JP 2004304104A JP 2004304104 A JP2004304104 A JP 2004304104A JP 2006118731 A JP2006118731 A JP 2006118731A
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compressor
air conditioner
refrigerant
heat exchanger
rotational speed
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Kenichiro Yano
謙一郎 矢野
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To shorten a start control time by controlling the start of a compressor on the basis of an operating state, and to improve comfortable sensation. <P>SOLUTION: This air conditioner comprises the refrigerant compressor, a refrigerant circuit constituted by circularly connecting a four-way valve, an outdoor-side heat exchanger, a pressure reducing expansion valve and an indoor-side heat exchanger, and a control circuit for controlling a rotating speed of the compressor, and a rotational frequency of the compressor is increased when the variation of suction pressure of the air conditioner becomes less than a prescribed value, thus the start of the compressor can be controlled on the basis of a state of the refrigerant circuit. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は冷媒圧縮機の運転制御装置を搭載した空気調和機に関するものである。   The present invention relates to an air conditioner equipped with an operation control device for a refrigerant compressor.

従来この種の制御装置は図５のようになっている（例えば、特許文献１参照）。   Conventionally, this type of control device is as shown in FIG. 5 (see, for example, Patent Document 1).

すなわち、冷媒圧縮機１は周波数可変圧縮機で、その電源周波数を変化させることにより圧縮機の回転数を変化させ、容量を制御するものである。この冷媒圧縮機１から吐出された冷媒は、四方弁２をとおり、室内側熱交換器３で液化凝縮され、減圧膨張弁４で減圧膨張し、室外側熱交換器５で、被冷却物質より吸熱し、四方弁２を経て冷媒圧縮機１へ吸入される。６は前記冷媒圧縮機１の回転数を制御する制御装置であり、商用電源７を一次電源とする。８は速度信号部であり、被冷却物質の温度を温度検知器９で検知し、その設定温度との差を検出器１０で検出し、信号を前記速度信号部８に送り前記冷媒圧縮機１の回転数を制御する。   That is, the refrigerant compressor 1 is a variable frequency compressor, and controls the capacity by changing the rotational frequency of the compressor by changing the power supply frequency. The refrigerant discharged from the refrigerant compressor 1 passes through the four-way valve 2, is liquefied and condensed in the indoor heat exchanger 3, is decompressed and expanded in the decompression expansion valve 4, and is cooled from the substance to be cooled in the outdoor heat exchanger 5. It absorbs heat and is sucked into the refrigerant compressor 1 through the four-way valve 2. Reference numeral 6 denotes a control device that controls the rotational speed of the refrigerant compressor 1, and uses a commercial power source 7 as a primary power source. Reference numeral 8 denotes a speed signal unit, which detects the temperature of the substance to be cooled by the temperature detector 9, detects a difference from the set temperature by the detector 10, and sends a signal to the speed signal unit 8 to send the refrigerant compressor 1. Control the number of revolutions.

なお、前記速度信号部８には別に起動制御回路１１を設けて、前記冷媒圧縮機１の起動時一定時間、この起動回路１１にて制御される優先回路が設けられている。   The speed signal unit 8 is provided with a start control circuit 11 and a priority circuit controlled by the start circuit 11 for a predetermined time when the refrigerant compressor 1 is started.

図６は、前記冷媒圧縮機１の起動時の回転数制御を示すものであり、横軸に起動からの時間、縦軸に冷媒圧縮機１の回転数をとっている。   FIG. 6 shows the rotational speed control at the time of starting the refrigerant compressor 1, where the horizontal axis represents the time from the start and the vertical axis represents the rotational speed of the refrigerant compressor 1.

冷媒圧縮機１が停止中は、潤滑油中に冷媒が溶け込み溜り込むいわゆる寝込み現象が頻繁に発生する。この状態から起動されると、冷媒圧縮機１内の潤滑油は多量に吐出冷媒により、冷媒圧縮機１の外部へと吐出される。   While the refrigerant compressor 1 is stopped, a so-called stagnation phenomenon in which the refrigerant melts and accumulates in the lubricating oil frequently occurs. When activated from this state, a large amount of lubricating oil in the refrigerant compressor 1 is discharged to the outside of the refrigerant compressor 1 by the discharged refrigerant.

しかし、図６に示す第１の保持周波数ｆ１は低い周波数に設定されているため、潤滑油が外部へ持ち出される量は少なく、潤滑油が確保される。しかし、低い速度であるため摺動部への潤滑油の供給量は少なく、従って、長時間運転することは信頼性を低下させることになる。そのため、比較的短い所定時間保持した後、第２の保持周波数ｆ２を設け立ち上がりのウオーミングアップ運転に入る。この第２の保持周波数ｆ２で運転後、負荷に応じた回転数で運転する。
特開平７−３０１４６０号公報 However, since the first holding frequency f1 shown in FIG. 6 is set to a low frequency, the amount of lubricating oil taken out is small, and the lubricating oil is secured. However, since the speed is low, the amount of lubricating oil supplied to the sliding portion is small, and therefore operating for a long time reduces the reliability. Therefore, after holding for a relatively short predetermined time, the second holding frequency f2 is provided to start the warm-up operation. After the operation at the second holding frequency f2, the operation is performed at the rotation speed corresponding to the load.
JP-A-7-301460

しかしながら、前記従来の構成では、圧縮機の起動直後に第１保持周波数ｆ１で一定時間（第１保持時間Ｔ１）保持し、ついで更に高い第２保持周波数ｆ２で一定時間（第２保持時間Ｔ２）保持するとしているため、空調機の運転状態に影響する外気温度、室内温度、冷媒寝込み度合が異なる場合でも常に一定の起動制御を行う。   However, in the conventional configuration, immediately after the start of the compressor, the first holding frequency f1 is held for a certain time (first holding time T1), and then the higher second holding frequency f2 is held for a certain time (second holding time T2). Therefore, even if the outside air temperature, the room temperature, and the refrigerant stagnation level that affect the operation state of the air conditioner are different, constant starting control is always performed.

そのため、圧縮機の信頼性を確保するためには第１保持時間Ｔ１及び第２保持時間Ｔ２は最も厳しい運転状態に合わせて設定する必要が生じるので、起動制御時間が長くなり室温が目標に到達する時刻が遅くなるので快適性が損なわれる。   Therefore, in order to ensure the reliability of the compressor, it is necessary to set the first holding time T1 and the second holding time T2 according to the most severe operation state, so the start-up control time becomes long and the room temperature reaches the target. Because the time to do becomes late, comfort is impaired.

本発明は、前記従来の課題を解決するもので、運転状態に応じた圧縮機の起動制御を行うことで起動制御時間を短縮し、快適性を向上させた空気調和機の提供を目的とする。   SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide an air conditioner that improves the comfort by shortening the startup control time by performing the startup control of the compressor according to the operating state. .

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、吸入圧力の変化が所定値以下となったとき圧縮機の回転数を高くすることを特徴としたものである。   In order to solve the above-mentioned conventional problems, the air conditioner of the present invention is characterized in that the rotational speed of the compressor is increased when the change in the suction pressure becomes a predetermined value or less.

これによって、冷媒回路の状態に応じた圧縮機の起動制御を行うことができる。   Thereby, the starting control of the compressor according to the state of the refrigerant circuit can be performed.

また、本発明の空気調和機は、圧縮機運転電流の変化が所定値以下となったとき、圧縮機の回転数を高くすることを特徴としたとしたものである。   In addition, the air conditioner of the present invention is characterized in that when the change in the compressor operating current becomes a predetermined value or less, the rotational speed of the compressor is increased.

これによって、冷媒回路の状態に応じて圧縮機の起動制御を行うことができる。
また、本発明の空気調和機は、蒸発温度の変化が所定値以下となったとき、圧縮機の回転数を高くすることを特徴としたとしたものである。 Thereby, the start-up control of the compressor can be performed according to the state of the refrigerant circuit.
Further, the air conditioner of the present invention is characterized in that the rotation speed of the compressor is increased when the change in the evaporation temperature becomes a predetermined value or less.

これによって、冷媒回路の状態に応じて圧縮機の起動制御を行うことができる。   Thereby, the start-up control of the compressor can be performed according to the state of the refrigerant circuit.

本発明の空気調和機は、起動制御時間を短縮し快適性を向上させることができる。   The air conditioner of the present invention can shorten the startup control time and improve the comfort.

第１の発明は冷媒圧縮機と、四方弁、室外側熱交換器、減圧膨張弁、室内側熱交換器を環状に接続し冷媒回路を構成し、圧縮機の回転速度を制御する制御回路を設け、当該空気調和機の吸入圧力の変化が所定値以下となったとき圧縮機の回転数を高くすることを特徴とすることにより、冷媒回路の状態に応じた圧縮機の起動制御を行うことができ、起動制御時間を短縮し快適性を向上することができる。   A first invention is a control circuit for controlling the rotational speed of a compressor by connecting a refrigerant compressor, a four-way valve, an outdoor heat exchanger, a decompression expansion valve, and an indoor heat exchanger in an annular shape to form a refrigerant circuit. And controlling the start-up of the compressor according to the state of the refrigerant circuit by increasing the rotational speed of the compressor when the change in the suction pressure of the air conditioner falls below a predetermined value. It is possible to shorten the startup control time and improve the comfort.

第２の発明は、特に、第１の発明の空気調和機を、当該空気調和機の圧縮機運転電流の変化が所定値以下となったとき、圧縮機の回転数を高くすることを特徴とすることにより、冷媒回路の状態に応じた圧縮機の起動制御を行うことができ、起動制御時間を短縮し快適性を向上することができる。   The second aspect of the invention is characterized in that, in particular, the air conditioner of the first aspect of the invention is configured to increase the rotational speed of the compressor when the change in the compressor operating current of the air conditioner becomes a predetermined value or less. By doing so, the start-up control of the compressor according to the state of the refrigerant circuit can be performed, the start-up control time can be shortened, and the comfort can be improved.

第３の発明は、特に、第１の発明の空気調和機を、当該空気調和機の蒸発温度の変化が所定値以下となったとき、圧縮機の回転数を高くすることを特徴とすることにより、冷媒回路の状態に応じた圧縮機の起動制御を行うことができ、起動制御時間を短縮し快適性を向上することができる。   The third aspect of the invention is characterized in that, in particular, the air conditioner of the first aspect of the invention is characterized in that the rotation speed of the compressor is increased when the change in the evaporation temperature of the air conditioner becomes a predetermined value or less. Thus, the start-up control of the compressor according to the state of the refrigerant circuit can be performed, the start-up control time can be shortened, and the comfort can be improved.

第４の発明は、特に、第１〜３のいずれかの発明の空気調和機を、起動時の圧縮機の回転数初期値を圧縮機の外郭温度により決定することを特徴とすることにより、起動時の圧縮機の状態に適した圧縮機回転数で起動開始を行うことができ、さらに起動制御時間を短縮し快適性を向上することができる。   According to a fourth aspect of the invention, in particular, the air conditioner according to any one of the first to third aspects of the invention is characterized in that the initial value of the rotational speed of the compressor at the time of startup is determined by the outer temperature of the compressor Startup can be started at a compressor speed suitable for the state of the compressor at startup, and startup control time can be shortened and comfort can be improved.

第５の発明は、特に、第１〜３のいずれかの発明の空気調和機を、起動時の圧縮機の回転数初期値を圧縮機の吐出配管温度により決定することを特徴とすることにより、起動時の圧縮機の状態に適した圧縮機回転数で起動開始を行うことができ、さらに起動制御時間を短縮し快適性を向上することができる。   According to a fifth aspect of the invention, in particular, the air conditioner according to any one of the first to third aspects of the invention is characterized in that the initial value of the rotational speed of the compressor at startup is determined by the discharge pipe temperature of the compressor. Thus, the start-up can be started at the compressor speed suitable for the state of the compressor at the start-up, and the start-up control time can be shortened and the comfort can be improved.

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１は、本発明の第１の実施の形態における空気調和機の制御装置回路図を示すもので
ある。 (Embodiment 1)
FIG. 1 shows a control device circuit diagram of an air conditioner according to a first embodiment of the present invention.

冷媒圧縮機2１は周波数可変圧縮機で、その電源周波数を変化させることにより圧縮機の回転数を変化させ、容量を制御するものである。この冷媒圧縮機2１から吐出された冷媒は、四方弁2２をとおり、室外側熱交換器2３で液化凝縮され、減圧膨張弁2４で減圧膨張し、室内側熱交換器2５で、被冷却物質より吸熱し、四方弁２2を経て冷媒圧縮機2１へ吸入される。2６は前記冷媒圧縮機2１の回転数を制御する制御装置で、27は吸入圧力センサ、28は圧縮機21の外郭温度センサ、29は圧縮機の運転電流を検出する電流センサ、30は室外側熱交換器2３の暖房時の蒸発温度を検出する室外熱交温度センサ、31は室内側熱交換器2５の冷房時の蒸発温度を検出する室内熱交温度センサ、32は吐出温度を検出する吐出温度センサである。   The refrigerant compressor 21 is a variable frequency compressor, and controls the capacity by changing the rotational frequency of the compressor by changing the power frequency. The refrigerant discharged from the refrigerant compressor 21 passes through the four-way valve 22, is liquefied and condensed in the outdoor heat exchanger 23, is decompressed and expanded in the decompression expansion valve 24, and is cooled from the substance to be cooled in the indoor heat exchanger 25. It absorbs heat and is sucked into the refrigerant compressor 21 through the four-way valve 22. 26 is a control device for controlling the rotational speed of the refrigerant compressor 21, 27 is a suction pressure sensor, 28 is an outer temperature sensor of the compressor 21, 29 is a current sensor for detecting the operating current of the compressor, and 30 is an outdoor side. An outdoor heat exchange temperature sensor that detects the evaporation temperature during heating of the heat exchanger 23, 31 is an indoor heat exchange temperature sensor that detects the evaporation temperature during cooling of the indoor heat exchanger 25, and 32 is a discharge that detects the discharge temperature. It is a temperature sensor.

以上のように構成された空気調和機について、以下その動作、作用を説明する。   About the air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

図２は、本発明の実施の形態1における動作フローチャートである。   FIG. 2 is an operation flowchart according to the first embodiment of the present invention.

まず、外郭温度センサ２８により検出した温度により制御装置26で圧縮機の初期回転数を決定し（ＳＴＥＰ１）、運転を開始する（ＳＴＥＰ２）。   First, the initial rotational speed of the compressor is determined by the controller 26 based on the temperature detected by the outer temperature sensor 28 (STEP 1), and the operation is started (STEP 2).

次に所定の周期毎に吸入圧力センサ２７で吸入圧力を検出する（ＳＴＥＰ３）。前回と今回の検出値の差を算出し、所定値より大きいときはＳＴＥＰ３に戻り、所定値以内であればＳＴＥＰ５へ進み（ＳＴＥＰ４）、圧縮機の回転数を所定値高くする（ＳＴＥＰ５）。その後、負荷に応じた回転数で運転する。   Next, the suction pressure is detected by the suction pressure sensor 27 at predetermined intervals (STEP 3). The difference between the previous detection value and the current detection value is calculated. If it is larger than the predetermined value, the process returns to STEP 3. If it is within the predetermined value, the process proceeds to STEP 5 (STEP 4), and the rotation speed of the compressor is increased by a predetermined value (STEP 5). Then, it drive | operates with the rotation speed according to load.

このように起動制御を行うことで、圧縮機の外郭温度で初期回転数を決定し、潤滑油の温度が低いときは低い回転数とし、高いときはそれより高い回転数で運転を開始することにより、冷媒の寝込みが多いときは低い回転数で、少ないときはより高い回転数で運転を開始できる。さらに、吸入圧力の変化が所定値以内となってから圧縮機の回転数をさらに上げるので、吸入圧力の急激な低下にともなうフォーミングもなくなる。   By performing start-up control in this way, the initial rotational speed is determined based on the outer temperature of the compressor, and when the temperature of the lubricating oil is low, the initial rotational speed is set to low, and when it is high, operation is started at a higher rotational speed. Thus, the operation can be started at a low rotation speed when the refrigerant stagnation is large and at a higher rotation speed when the refrigerant is low. Furthermore, since the rotation speed of the compressor is further increased after the change in the suction pressure is within a predetermined value, there is no forming due to a rapid decrease in the suction pressure.

従って従来の技術のように、圧縮機の信頼性を確保するために、どのような状態でも常に圧縮機の回転数を一定時間保持する必要がなく、冷媒回路の状態に応じた圧縮機の起動制御を行うことができ、圧縮機の信頼性を確保しつつ起動制御時間を短縮し快適性を向上した空気調和機を提供することができる。   Therefore, unlike the prior art, in order to ensure the reliability of the compressor, it is not always necessary to maintain the rotation speed of the compressor for a certain period of time in any state, and the compressor is started according to the state of the refrigerant circuit. It is possible to provide an air conditioner that can perform control and shortens the start-up control time and improves comfort while ensuring the reliability of the compressor.

（実施の形態２）
本実施の形態において、空気調和機の制御装置回路図は同一であり説明を省略する。 (Embodiment 2)
In the present embodiment, the control device circuit diagram of the air conditioner is the same, and the description is omitted.

以上のように構成された空気調和機について、以下その動作、作用を説明する。   About the air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

図３は、本発明の実施の形態２における動作フローチャートである。   FIG. 3 is an operation flowchart according to the second embodiment of the present invention.

まず、外郭温度センサ２８により検出した温度により制御装置26で圧縮機の初期回転数を決定し（ＳＴＥＰ１）、運転を開始する（ＳＴＥＰ２）。   First, the initial rotational speed of the compressor is determined by the controller 26 based on the temperature detected by the outer temperature sensor 28 (STEP 1), and the operation is started (STEP 2).

次に所定の周期毎に電流センサ２９で圧縮機運転電流を検出する（ＳＴＥＰ３）。   Next, the compressor operating current is detected by the current sensor 29 at predetermined intervals (STEP 3).

前回と今回の検出値の差を算出し、所定値より大きいときはＳＴＥＰ３に戻り、所定値以内であればＳＴＥＰ５へ進み（ＳＴＥＰ４）、
圧縮機の回転数を所定値高くする（ＳＴＥＰ５）。その後、負荷に応じた回転数で運転
する。 The difference between the previous detection value and the current detection value is calculated. If it is larger than the predetermined value, the process returns to STEP 3, and if it is within the predetermined value, the process proceeds to STEP 5 (STEP 4).
The number of rotations of the compressor is increased by a predetermined value (STEP 5). Then, it drive | operates with the rotation speed according to load.

圧縮機の運転電流は、圧縮機の運転負荷と、圧縮機のモーター巻線温度によって変化する。即ち、起動直後巻線温度が低く、吐出と吸入圧力の差圧が小さいときに電流値は低く、巻線温度が上昇して差圧が大きくなると電流値も高くなる。   The operating current of the compressor varies depending on the operating load of the compressor and the motor winding temperature of the compressor. That is, the current value is low when the winding temperature is low immediately after startup and the differential pressure between discharge and suction pressure is small, and the current value increases when the winding temperature rises and the differential pressure increases.

従って、圧縮機電流値の変化が所定値以内となって、圧縮機が暖まり冷媒の寝込みが減少し冷媒回路が安定してから圧縮機の回転を高くするので、急激なフォーミングが発生することがない。   Therefore, since the change in the compressor current value is within a predetermined value, the compressor is warmed, the stagnation of the refrigerant is reduced, and the refrigerant circuit is stabilized to increase the rotation of the compressor. Absent.

従って従来の技術のように、圧縮機の信頼性を確保するために、どのような状態でも常に圧縮機の回転数を一定時間保持する必要がなく、冷媒回路の状態に応じた圧縮機の起動制御を行うことができ、圧縮機の信頼性を確保しつつ起動制御時間を短縮し快適性を向上した空気調和機を提供することができる。   Therefore, unlike the prior art, in order to ensure the reliability of the compressor, it is not always necessary to maintain the rotation speed of the compressor for a certain period of time in any state, and the compressor is started according to the state of the refrigerant circuit. It is possible to provide an air conditioner that can perform control and shortens the start-up control time and improves comfort while ensuring the reliability of the compressor.

（実施の形態３）
本実施の形態において、空気調和機の制御装置回路図は同一であり説明を省略する。 (Embodiment 3)
In the present embodiment, the control device circuit diagram of the air conditioner is the same, and the description is omitted.

以上のように構成された空気調和機について、以下その動作、作用を説明する。   About the air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

図４は、本発明の実施の形態３における動作フローチャートである。   FIG. 4 is an operation flowchart according to the third embodiment of the present invention.

まず、吐出温度センサ３２により検出した温度により制御装置26で圧縮機の初期回転数を決定し（ＳＴＥＰ１）、運転を開始する（ＳＴＥＰ２）。次に所定の周期毎に、冷房時は室内熱交温度センサ３１で、暖房時は室外熱交温度センサ３０で蒸発温度を検出する（ＳＴＥＰ３）。   First, the initial rotational speed of the compressor is determined by the controller 26 based on the temperature detected by the discharge temperature sensor 32 (STEP 1), and the operation is started (STEP 2). Next, at predetermined intervals, the evaporating temperature is detected by the indoor heat exchanger temperature sensor 31 during cooling and by the outdoor heat exchanger temperature sensor 30 during heating (STEP 3).

前回と今回の検出値の差を算出し、所定値より大きいときはＳＴＥＰ３に戻り、所定値以内であればＳＴＥＰ５へ進み（ＳＴＥＰ４）、圧縮機の回転数を所定値高くする（ＳＴＥＰ５）。その後、負荷に応じた回転数で運転する。   The difference between the previous detection value and the current detection value is calculated. If the difference is larger than the predetermined value, the process returns to STEP 3. If it is within the predetermined value, the process proceeds to STEP 5 (STEP 4), and the rotation speed of the compressor is increased by a predetermined value (STEP 5). Then, it drive | operates with the rotation speed according to load.

このように起動制御を行うことで、圧縮機の吐出温度で初期回転数を決定し、吐出配管温度が低く、潤滑油の温度が低いときは低い回転数とし、高いときはそれより高い回転数で運転を開始することにより、冷媒の寝込みが多いときは低い回転数で、少ないときはより高い回転数で運転を開始できる。   By performing the start-up control in this way, the initial rotational speed is determined by the discharge temperature of the compressor, and when the discharge pipe temperature is low and the temperature of the lubricating oil is low, the rotational speed is low, and when it is high, the rotational speed is higher than that. By starting the operation, the operation can be started at a low rotation speed when the refrigerant stagnation is large and at a higher rotation speed when the refrigerant is low.

さらに、蒸発温度の変化が所定値以内となってから圧縮機の回転数をさらに上げるので、吸入圧力の急激な低下にともなうフォーミングもなくなる。   Furthermore, since the rotation speed of the compressor is further increased after the change in the evaporation temperature falls within a predetermined value, there is no forming due to a rapid decrease in the suction pressure.

従って従来の技術のように、圧縮機の信頼性を確保するために、どのような状態でも常に圧縮機の回転数を一定時間保持する必要がなく、冷媒回路の状態に応じた圧縮機の起動制御を行うことができ、圧縮機の信頼性を確保しつつ起動制御時間を短縮し快適性を向上した空気調和機を提供することができる。   Therefore, unlike the prior art, in order to ensure the reliability of the compressor, it is not always necessary to maintain the rotation speed of the compressor for a certain period of time in any state, and the compressor is started according to the state of the refrigerant circuit. It is possible to provide an air conditioner that can perform control and shortens the start-up control time and improves comfort while ensuring the reliability of the compressor.

以上のように、本発明にかかる空気調和機は、圧縮機の起動制御時間を短縮し快適性を向上させることが可能となるので、圧縮機の回転速度が制御できる冷蔵庫等冷凍機の制御の用途にも適用できる。   As described above, the air conditioner according to the present invention can shorten the start-up control time of the compressor and improve the comfort, so that it is possible to control the refrigerator such as a refrigerator that can control the rotation speed of the compressor. It can also be applied to applications.

本発明の第１〜第３の実施の形態における空気調和機の制御装置回路図Air conditioner control device circuit diagram in the first to third embodiments of the present invention 本発明の実施の形態1における動作フローチャートOperation flowchart according to the first embodiment of the present invention 本発明の実施の形態２における動作フローチャートOperation flowchart according to the second embodiment of the present invention 本発明の実施の形態３における動作フローチャートOperation flowchart in Embodiment 3 of the present invention 従来の空気調和機の制御装置回路図Conventional air conditioner control device circuit diagram 従来の空気調和機の制御装置の運転特性図Operating characteristic diagram of conventional air conditioner control device

符号の説明Explanation of symbols

２１ 圧縮機
２２ 四方弁
２３ 室外側熱交換器
２４ 減圧膨張弁
２５ 室内側熱交換器
２７ 吸入圧力センサー 21 Compressor 22 Four-way valve 23 Outdoor heat exchanger 24 Pressure reduction expansion valve 25 Indoor heat exchanger 27 Suction pressure sensor

Claims (5)

冷媒圧縮機と、四方弁、室外側熱交換器、減圧膨張弁、室内側熱交換器を環状に接続し冷媒回路を構成し、圧縮機の回転速度を制御する制御回路を設け、圧縮機起動時、当該空気調和機の吸入圧力の変化が所定値以下となったとき圧縮機の回転数を高くすることを特徴とした空気調和機。 A refrigerant compressor, a four-way valve, an outdoor heat exchanger, a decompression expansion valve, and an indoor heat exchanger are connected in a ring to form a refrigerant circuit, and a control circuit for controlling the rotation speed of the compressor is provided to start the compressor An air conditioner characterized in that when the change in the suction pressure of the air conditioner becomes a predetermined value or less, the rotation speed of the compressor is increased. 冷媒圧縮機と、四方弁、室外側熱交換器、減圧膨張弁、室内側熱交換器を環状に接続し冷媒回路を構成し、圧縮機の回転速度を制御する制御回路を設け、圧縮機起動時、圧縮機運転電流の変化が所定値以下となったとき、前記圧縮機の回転数を高くすることを特徴とした空気調和機。 A refrigerant compressor, a four-way valve, an outdoor heat exchanger, a decompression expansion valve, and an indoor heat exchanger are connected in a ring to form a refrigerant circuit, and a control circuit for controlling the rotation speed of the compressor is provided to start the compressor An air conditioner characterized in that when the change in compressor operating current becomes a predetermined value or less, the rotational speed of the compressor is increased. 冷媒圧縮機と、四方弁、室外側熱交換器、減圧膨張弁、室内側熱交換器を環状に接続し冷媒回路を構成し、圧縮機の回転速度を制御する制御回路を設け、圧縮機起動時、蒸発温度の変化が所定値以下となったとき、前記圧縮機の回転数を高くすることを特徴とした空気調和機。 A refrigerant compressor, a four-way valve, an outdoor heat exchanger, a decompression expansion valve, and an indoor heat exchanger are connected in a ring to form a refrigerant circuit, and a control circuit for controlling the rotation speed of the compressor is provided to start the compressor An air conditioner characterized in that when the change in the evaporation temperature becomes a predetermined value or less, the rotational speed of the compressor is increased. 起動時の圧縮機の回転数初期値を圧縮機の外郭温度により決定することを特徴とした請求項１〜３のいずれか1項に記載の空気調和機。 The air conditioner according to any one of claims 1 to 3, wherein an initial value of the rotational speed of the compressor at the time of startup is determined by an outer temperature of the compressor. 起動時の圧縮機の回転数初期値を圧縮機の吐出配管温度により決定することを特徴とした請求項１〜３のいずれか1項に記載の空気調和機。 The air conditioner according to any one of claims 1 to 3, wherein an initial value of the rotational speed of the compressor at the time of startup is determined by a discharge pipe temperature of the compressor.
JP2004304104A 2004-10-19 2004-10-19 Air conditioner Withdrawn JP2006118731A (en)

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