JP3144884B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP3144884B2 JP3144884B2 JP07949192A JP7949192A JP3144884B2 JP 3144884 B2 JP3144884 B2 JP 3144884B2 JP 07949192 A JP07949192 A JP 07949192A JP 7949192 A JP7949192 A JP 7949192A JP 3144884 B2 JP3144884 B2 JP 3144884B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- air
- compressor
- room
- return
- 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.)
- Expired - Fee Related
Links
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- Air Conditioning Control Device (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、吹出温度を一定に保つ
能力制御を行う空気調和機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for controlling an ability to maintain a constant blowing temperature.
【０００２】[0002]
【従来の技術】従来の吹出温度一定制御を行う空気調和
機としては特開平２−１２２１３８号公報に示されてい
るものがある。2. Description of the Related Art As a conventional air conditioner for performing constant blow-off temperature control, there is one disclosed in Japanese Patent Application Laid-Open No. 2-122138.
【０００３】以下、図面を参照しながら上記従来の吹出
温度一定制御を行う空気調和機について説明する。図７
は従来の空気調和機を示す概略構成図で、１はダクト式
の室内機本体で、内部に室内側熱交換器２、室内側送風
機３、室内側送風機３にて吹き出された空気温度を検出
する吹出温度検出器４を有している。５は室外機本体
で、内部に能力可変式の圧縮機６、室外側熱交換器７、
室外側送風機８、圧縮機６の能力を制御する圧縮機制御
器９を有している。[0003] Hereinafter, an air conditioner that performs the above-described conventional blow-out temperature constant control will be described with reference to the drawings. FIG.
Is a schematic configuration diagram showing a conventional air conditioner, 1 is a duct type indoor unit main body, and detects the temperature of air blown out by the indoor heat exchanger 2, the indoor blower 3, and the indoor blower 3 therein. And a blowout temperature detector 4 for detecting the temperature. Reference numeral 5 denotes an outdoor unit main body, in which a variable capacity compressor 6, an outdoor heat exchanger 7,
An outdoor blower 8 and a compressor controller 9 for controlling the performance of the compressor 6 are provided.
【０００４】室内機本体１から被空調室１０までダクト
１１にて接続され、被空調室１０に温風又は冷風を導
く。ダクト１１の途中には可変風量ユニット１２が具備
され通過風量を変化させることで被空調室１０の室温制
御を行っている。１３はリターンダクトで、被空調室１
０から室内機本体１に空気を導く。１４は吸気ダクト、
１５は排気ダクトで、給気ダクト１４，排気ダクト１５
いずれもダクトの途中に給・排気装置としてのファン１
４ａ，１５ａをもち、リターンダクト１３内の空気の一
部を排気するとともに、外気を給気して、被空調室１０
を換気している。A duct 11 connects the indoor unit main body 1 to the room to be air-conditioned 10, and guides warm air or cold air to the room to be air-conditioned 10. A variable air volume unit 12 is provided in the middle of the duct 11 to control the room temperature of the room to be air-conditioned 10 by changing the air volume. Reference numeral 13 denotes a return duct,
The air is guided from 0 to the indoor unit main body 1. 14 is an intake duct,
An exhaust duct 15 includes an air supply duct 14 and an exhaust duct 15.
In any case, a fan 1 as a supply / exhaust device in the middle of the duct
4a, 15a, exhausts a part of the air in the return duct 13 and supplies outside air to the air-conditioned room 10
Is ventilating.
【０００５】１６は可変風量ユニット１２の風量制御装
置で、被空調室１０内の室温調整器１７に設けられた室
温設定器１８ａにて設定された設定室温Ｔ０と室温検出
器１８ｂにて検出された室温Ｔ１との差でもって、可変
風量ユニット１２内のダンパー（図示せず），モータ
（図示せず）を制御しダクト１１内の通過風量を制御す
る。また、１９は可変風量ユニット１２の運転スイッチ
で、運転スイッチ１９切の場合、可変風量ユニット１２
内のダンパーを閉じ通過風量を止め、空調を停止するも
のである。Reference numeral 16 denotes an air volume control device of the variable air volume unit 12, which is detected by a room temperature detector 18b and a set room temperature T0 set by a room temperature setter 18a provided in a room temperature controller 17 in the room 10 to be air-conditioned. The damper (not shown) and the motor (not shown) in the variable air volume unit 12 are controlled by the difference from the room temperature T1 to control the air volume passing through the duct 11. Reference numeral 19 denotes an operation switch for the variable air volume unit 12. When the operation switch 19 is turned off, the variable air volume unit 12 is operated.
The inside damper is closed to stop the passing airflow, and the air conditioning is stopped.
【０００６】以上のように構成された吹出温度一定制御
を行う空気調和機について以下図８を参照しながら冷房
時の動作を説明する。[0006] The operation of the air conditioner configured as described above, which performs the blow-off temperature constant control, during cooling will be described below with reference to FIG.
【０００７】可変風量ユニット１２の運転スイッチ１９
がＯＮの場合、可変風量ユニット１２内のダンパーを開
き、空調を開始し、室温調整器１７内の室温設定器１８
ａにて設定された設定室温Ｔ０と室温検出器１８ｂにて
検出された室温Ｔ１の差（ステップａ）が、冷暖時Ｔ１
−Ｔ０＞０の場合ダクト１１内の風量が増加するよう風
量制御装置１６は可変風量ユニット１２を制御する（ス
テップｂ）。また逆にＴ１−Ｔ０＜０の場合ダクト１１
内の風量を減少させるよう制御する（ステップｃ）。The operation switch 19 of the variable air volume unit 12
Is ON, the damper in the variable air volume unit 12 is opened, air conditioning is started, and the room temperature setting unit 18 in the room temperature controller 17 is opened.
The difference (step a) between the set room temperature T0 set at a and the room temperature T1 detected by the room temperature detector 18b (step a) is the cooling / heating T1.
When −T0> 0, the air volume control device 16 controls the variable air volume unit 12 so that the air volume in the duct 11 increases (step b). Conversely, when T1-T0 <0, the duct 11
Is controlled so as to reduce the amount of air inside (step c).
【０００８】このとき被空調室１０の換気風量の確保の
ため、可変風量ユニット１２は、最低でもダクト１１内
の通過風量をあらかじめ設定した風量以下にはしない。
このようにダクト１１内の通過風量が変化するが、室内
機本体１内の吹出温度検出器４にて検出された吹出温度
が常に一定になるよう圧縮機制御器９は圧縮機６の能力
を可変する（ステップｄ）。At this time, in order to secure the ventilation air volume of the room to be air-conditioned 10, the variable air volume unit 12 does not reduce the air volume passing through the duct 11 at least to a predetermined air volume.
As described above, although the amount of air passing through the duct 11 changes, the compressor controller 9 adjusts the capacity of the compressor 6 so that the blowout temperature detected by the blowout temperature detector 4 in the indoor unit main body 1 is always constant. Variable (step d).
【０００９】以上のように室内機本体１から常に一定の
吹出温度にて空気を吹き出し、可変風量ユニット１２に
て被空調室１０内に供給する風量を変化させて被空調室
１０を空調するものである。As described above, air is always blown from the indoor unit main body 1 at a constant blowing temperature, and the air volume supplied to the air-conditioned room 10 is changed by the variable air volume unit 12 to air-condition the air-conditioned room 10. It is.
【００１０】[0010]
【発明が解決しようとする課題】しかしながら上記従来
の構成は、被空調室の空調負荷が減少しても、換気風量
を確保するため一定風量以下には供給風量を減少させる
ことができず、冷房時被空調室が冷え過ぎ、暖房時には
逆に暖まり過ぎる、つまり空気調和機の能力が下がらな
いという欠点があった。However, in the above-mentioned conventional structure, even if the air-conditioning load of the room to be air-conditioned decreases, the supply air volume cannot be reduced below a certain air volume in order to secure the ventilation air volume. However, there is a disadvantage that the room to be air-conditioned is too cold, and when heated, it is too warm, that is, the performance of the air conditioner does not decrease.
【００１１】本発明は、被空調室の空調負荷が減少した
とき、被空調室を冷房時冷え過ぎたり、暖房時暖まり過
ぎにさせず換気風量を確保して快適な屋内環境を維持す
ることを目的とする。According to the present invention, when the air-conditioning load of the room to be air-conditioned is reduced, the air-conditioned room is not cooled too much during cooling or overheated during heating to secure a ventilation air volume and maintain a comfortable indoor environment. Aim.
【００１２】[0012]
【課題を解決するための手段】上記目的を達成するた
め、本発明の空気調和機では、室内機本体からの吹出空
気温度を検出する吹出温度検出器と、リターン空気温度
を検出するリターン温度検出器と、圧縮機の運転を制御
する圧縮機制御器と、圧縮機制御器を制御する制御装置
とを具備している。In order to achieve the above object, an air conditioner according to the present invention comprises an outlet temperature detector for detecting the temperature of air blown from an indoor unit main body, and a return temperature detector for detecting a return air temperature. A compressor, a compressor controller for controlling the operation of the compressor, and a controller for controlling the compressor controller.
【００１３】そして制御装置は、吹出温度検出器にて検
出した吹出空気温度が、あらかじめ設定された設定温度
になるように、圧縮機制御器に圧縮機の能力制御を行わ
せ、リターン温度が設定温度より、冷房時一定温度下が
るか、暖房時一定温度上がるかすると、吹出空気温度の
設定温度を冷房運転時所定値上げ、暖房運転時所定値下
げる制御を行うように構成している。The control device causes the compressor controller to control the capacity of the compressor so that the blown air temperature detected by the blowout temperature detector becomes a preset set temperature, and the return temperature is set. When the temperature is lowered by a certain value during cooling or by a certain temperature during heating, the control is performed such that the set temperature of the blown air temperature is increased by a predetermined value during the cooling operation and decreased by a predetermined value during the heating operation.
【００１４】また別の本発明の空気調和機では、室内機
本体からの吹出空気温度を検出する吹出温度検出器と、
リターン空気温度を検出するリターン温度検出器と、圧
縮機の運転を制御する圧縮機制御器と、圧縮機制御器を
制御する制御装置とを具備している。In another air conditioner of the present invention, an air temperature detector for detecting the temperature of air blown from an indoor unit main body;
It has a return temperature detector for detecting the return air temperature, a compressor controller for controlling the operation of the compressor, and a control device for controlling the compressor controller.
【００１５】そして制御装置は、吹出温度検出器にて検
出した吹出空気温度が、あらかじめ設定された設定温度
になるように、圧縮機制御器に圧縮機の能力制御を行わ
せるとともに、吹出空気温度が設定温度より、冷房時一
定温度下がるか、暖房時一定温度上がるかすると、圧縮
機の運転を停止させ（サーモＯＦＦ）、圧縮機の運転停
止が所定時間内に所定回数発生した場合、または、リタ
ーン空気温度が設定温度より、冷房時一定温度下がる
か、暖房時一定温度上がるかした場合、前期吹出空気温
度の設定温度を冷房運転時所定値上げ、暖房運転時所定
値下げる制御を行うように構成している。The control device controls the compressor controller to control the capacity of the compressor so that the temperature of the blown air detected by the blower temperature detector becomes a preset temperature, and the temperature of the blown air is controlled. If the cooling temperature is lower than the set temperature by a certain temperature during cooling or a certain temperature during heating, the operation of the compressor is stopped (thermo OFF), and the operation of the compressor is stopped a predetermined number of times within a predetermined time, or When the return air temperature is lower than the set temperature by a certain value during cooling or by a certain temperature during heating, control is performed to raise the set temperature of the blow-off air temperature by a predetermined value during cooling operation and to lower it by a predetermined value during heating operation. are doing.
【００１６】[0016]
【作用】本発明の空気調和機は、被空調室の空調負荷が
減少したとき、可変風量ユニットによりダクトの通過風
量が減少し、空気調和機の吹出空気温度が冷房時低下し
暖房時上昇するよう変化するが、このとき制御装置は吹
出空気温度を一定に保つよう圧縮機の能力を制御する。
また、リターン空気温度が設定温度より、冷房時一定温
度下がるか、暖房時一定温度上がるかすると、制御装置
は室内機本体からの吹出空気の設定温度を冷房運転時所
定値上げ（暖房運転時所定値下げ）るとともに、室内機
本体からの吹出空気の温度が新しく設定された温度にな
るように圧縮機制御器に圧縮機の能力制御（能力減少）
を行わせる。In the air conditioner of the present invention, when the air-conditioning load of the room to be air-conditioned is reduced, the amount of air passing through the duct is reduced by the variable air volume unit, and the temperature of the air discharged from the air conditioner decreases during cooling and increases during heating. At this time, the controller controls the capacity of the compressor so as to keep the blown air temperature constant.
When the return air temperature is lower than the set temperature by a certain value during cooling or by a certain temperature during heating, the control device raises the set temperature of the air blown from the indoor unit body by a predetermined value during the cooling operation (by a predetermined value during the heating operation). In addition, the compressor controller controls the capacity of the compressor (reduces the capacity) so that the temperature of the air blown out from the indoor unit itself becomes the newly set temperature.
Is performed.
【００１７】その結果、リターン温度の検出により、被
空調室全体の負荷低下が検出でき、室内機本体からの吹
出空気の温度が冷房運転時所定値上がり（暖房運転時所
定値下がり）、被空調室の空調負荷が同じでも、可変風
量ユニットによりダクトの通過風量が増加し、さらに最
低風量（換気風量）まで可変風量ユニットは風量を低下
させることができるため、圧縮機の能力をさらに低下さ
せることができ、負荷がないのにもかかわらず、冷房時
冷風を、暖房時温風を供給し続けるのを解消し、冷えす
ぎ、暖まりすぎによる快適性の低下を防止するものであ
る。As a result, by detecting the return temperature, it is possible to detect a decrease in the load on the entire room to be conditioned, and the temperature of the air blown out from the indoor unit increases by a predetermined value during the cooling operation (decreases by a predetermined value during the heating operation). Even if the air conditioning load is the same, the variable air volume unit increases the air volume passing through the duct, and furthermore, the variable air volume unit can reduce the air volume to the minimum air volume (ventilation air volume), further reducing the compressor capacity. This prevents the supply of cold air during cooling and hot air during heating even though there is no load, and prevents a decrease in comfort due to excessive cooling and excessive heating.
【００１８】また別の本発明の空気調和機は、被空調室
の空調負荷が減少したとき、可変風量ユニットによりダ
クトの通過風量が減少し、空気調和機の吹出空気温度が
冷房時低下し暖房時上昇するよう変化するが、このとき
制御装置は吹出空気温度を一定に保つよう圧縮機の能力
を制御するとともに、吹出空気温度が設定温度より、冷
房時一定温度下がるか、暖房時一定温度上がるかする
と、圧縮機の運転を停止（サーモＯＦＦ）させる、圧縮
機の運転停止が所定時間内に所定回数発生した場合、ま
たは、リターン空気温度が設定温度より、冷房時一定温
度下がるか、暖房時一定温度上がるかした場合、制御装
置は室内機本体からの吹出空気の設定温度を冷房運転時
所定値上げ（暖房運転時所定値下げ）るとともに、室内
機本体からの吹出空気の温度が新しく設定された温度に
なるように圧縮機制御器に圧縮機の能力制御（能力減
少）を行わせる。According to another air conditioner of the present invention, when the air-conditioning load of the room to be air-conditioned is reduced, the air volume passing through the duct is reduced by the variable air volume unit, and the temperature of the air blown out of the air conditioner is reduced during cooling to reduce the heating. At this time, the controller controls the capacity of the compressor to keep the blown air temperature constant, and at the same time, the blown air temperature falls below the set temperature by a fixed temperature during cooling or by a certain temperature during heating. Then, the operation of the compressor is stopped (thermo-off), when the operation of the compressor has been stopped a predetermined number of times within a predetermined time, or when the return air temperature is lower than the set temperature by a certain temperature during cooling or during heating. When the temperature rises by a certain amount, the control device raises the set temperature of the air blown from the indoor unit main body by a predetermined value during the cooling operation (decreases the predetermined temperature during the heating operation), and increases the air blown from the indoor unit main body. Temperature to perform the capacity control of the compressor to the compressor controller to be newly set temperature (capacity reduction) of.
【００１９】その結果、可変風量ユニットで送風を停止
した場合による、急激な負荷の低下に対し、吹出空気温
度によるサーモＯＦＦの検知により、空調負荷の低下が
検出できるとともに、リターン温度の検出により、被空
調室全体の負荷低下が検出でき、このとき、室内機本体
からの吹出空気の温度が冷房運転時所定値上がり（暖房
運転時所定値下がり）、被空調室の空調負荷が同じで
も、可変風量ユニットによりダクトの通過風量が増加
し、さらに最低風量（換気風量）まで可変風量ユニット
は風量を低下させることができるため、圧縮機の能力を
さらに低下させることができ、負荷がないのにもかかわ
らず、冷房時冷風を、暖房時温風を供給し続けるのを解
消し、冷えすぎ、暖まりすぎによる快適性の低下を防止
するものである。As a result, in response to a sudden decrease in the load caused by stopping the air supply at the variable air volume unit, the decrease in the air conditioning load can be detected by detecting the thermo-OFF based on the blown air temperature, and the return temperature can be detected by detecting the return temperature. A decrease in the load of the entire conditioned room can be detected. At this time, even if the temperature of the air blown out from the indoor unit increases by a predetermined value during the cooling operation (decreases by the predetermined value during the heating operation) and the air conditioning load of the conditioned room is the same, the variable air volume unit As a result, the air volume passing through the duct increases, and the variable air volume unit can further reduce the air volume to the minimum air volume (ventilation air volume). In addition, it is possible to prevent continuous supply of cold air during cooling and hot air during heating, thereby preventing a decrease in comfort due to excessive cooling and excessive heating.
【００２０】[0020]
【実施例】以下本発明による空気調和機の一実施例につ
いて図面を参照しながら説明するが、従来と同一構成の
部分は同一符号を付し、その詳細な説明は省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the air conditioner according to the present invention will be described below with reference to the drawings.
【００２１】図１は本発明の一実施例の空気調和機の概
略構成図、図２は同実施例の空気調和機のブロック図、
図３は同実施例の空気調和機の動作を示すフローチャー
トである。FIG. 1 is a schematic configuration diagram of an air conditioner of one embodiment of the present invention, FIG. 2 is a block diagram of the air conditioner of the embodiment,
FIG. 3 is a flowchart showing the operation of the air conditioner of the embodiment.
【００２２】図１において、ダクト式の室内機本体１
は、内部に室内側熱交換器２，室内側送風機３，吹出温
度検出器４，リターン温度検出器２０を具備している。
室外機本体５は、内部に能力可変式の圧縮機６，室外側
熱交換器７，室外側送風機８，圧縮機制御器２１を具備
している。In FIG. 1, a duct type indoor unit main body 1 is shown.
Has an indoor heat exchanger 2, an indoor blower 3, an outlet temperature detector 4, and a return temperature detector 20 inside.
The outdoor unit main body 5 includes a compressor 6 having a variable capacity, an outdoor heat exchanger 7, an outdoor blower 8, and a compressor controller 21 inside.
【００２３】図２において、２２は本実施例の空気調和
機を制御する制御装置で、吹出温度を設定する（設定吹
出温度ｔ０）吹出温度設定器２３と、吹出温度検出器４
にて検出された吹出温度ｔ１と設定吹出温度ｔ０とを比
較する吹出温度比較器２４と、リターン温度を設定する
（設定リターン温度ｔ２）リターン温度設定器２５と、
リターン温度検出器２０にて検出されたリターン温度ｔ
３と設定リターン温度ｔ２とを比較するリターン温度比
較器２６と、運転モードを検出する運転モード検出器２
７を内蔵している。In FIG. 2, reference numeral 22 denotes a control device for controlling the air conditioner according to the present embodiment, which is an outlet temperature setting device 23 for setting the outlet temperature (set outlet temperature t0) and an outlet temperature detector 4.
A blow-out temperature comparator 24 for comparing the blow-out temperature t1 detected at and the set blow-out temperature t0, a return temperature setting unit 25 for setting a return temperature (set return temperature t2),
Return temperature t detected by return temperature detector 20
Return temperature comparator 26 for comparing the set return temperature t2 with a set return temperature t2, and an operation mode detector 2 for detecting an operation mode
7 is built in.
【００２４】制御装置２２は、吹出温度比較器２４の比
較結果と運転モード検出器２７が検出する運転モードに
より圧縮機制御器２１を介して圧縮機６の能力を変化さ
せるとともに、リターン温度比較器２６の比較結果によ
り吹出温度設定器２３の設定温度を変化させる。The control device 22 changes the capacity of the compressor 6 via the compressor controller 21 according to the comparison result of the blow-out temperature comparator 24 and the operation mode detected by the operation mode detector 27, and also returns the return temperature comparator The set temperature of the outlet temperature setter 23 is changed according to the comparison result of 26.
【００２５】次にこの動作の具体例を冷房運転時の動作
を示す図３のフローチャートで説明する。Next, a specific example of this operation will be described with reference to the flowchart of FIG. 3 showing the operation during the cooling operation.
【００２６】可変風量ユニット１２の運転スイッチ１９
がＯＮの場合、可変風量ユニット１２内のダンパーを開
き、空調を開始し、室温調整器１７内の室温設定器１８
ａにて設定された設定室温Ｔ０と室温検出器１８ｂにて
検出された室温Ｔ１の差が、冷房持Ｔ１−Ｔ０＞０の場
合、風量制御装置１６はダクト１１内の風量が増加する
よう可変風量ユニット１２を制御する（ステップ１）。
また逆にＴ１−Ｔ０＜０の場合、ダクト１１内の風量を
減少させるよう制御する（ステップ１）。The operation switch 19 of the variable air volume unit 12
Is ON, the damper in the variable air volume unit 12 is opened, air conditioning is started, and the room temperature setting unit 18 in the room temperature controller 17 is opened.
When the difference between the set room temperature T0 set in a and the room temperature T1 detected by the room temperature detector 18b is T1-T0> 0, the air volume control device 16 is variable so that the air volume in the duct 11 increases. The air volume unit 12 is controlled (step 1).
Conversely, when T1−T0 <0, control is performed to reduce the air volume in the duct 11 (step 1).
【００２７】このとき被空調室１０の換気風量の確保の
ため、可変風量ユニット１２は、最低でもダクト１１内
の通過風量をあらかじめ設定した風量以下にはしない。
このようにダクト１１内の通過風量が変化するが、室内
機本体１内の吹出温度検出器４にて検出された吹出温度
ｔ１が常に吹出温度設定器２３の設定温度ｔ０になるよ
う圧縮機制御器２０は圧縮機６の能力を可変する。（ス
テップ２）。At this time, in order to secure the ventilation air volume of the room to be air-conditioned 10, the variable air volume unit 12 does not reduce the air volume passing through the duct 11 at least below a preset air volume.
As described above, although the amount of air passing through the duct 11 changes, the compressor control is performed so that the outlet temperature t1 detected by the outlet temperature detector 4 in the indoor unit main body 1 always becomes the set temperature t0 of the outlet temperature setter 23. The compressor 20 varies the capacity of the compressor 6. (Step 2).
【００２８】また、制御装置２２は、リターン温度ｔ３
が設定リターン温度ｔ２より、冷房時一定温度Ａ下がる
か（ｔ３−ｔ２≦−Ａ）、暖房時一定温度Ｂ上がるか
（ｔ３−ｔ２≧Ｂ）すると、被空調室全体の負荷低下と
判断し、室内機本体からの吹出温度設定器２３の設定温
度ｔ０を冷房時所定値上げ、暖房時所定値下げる（ステ
ップ３）。The control device 22 determines the return temperature t3
Is lower than the set return temperature t2 by a constant temperature A during cooling (t3−t2 ≦ −A) or a constant temperature B during heating (t3−t2 ≧ B), it is determined that the load of the entire air-conditioned room is reduced. The set temperature t0 of the outlet temperature setting device 23 from the indoor unit main body is increased by a predetermined value during cooling and decreased by a predetermined value during heating (step 3).
【００２９】制御装置２２は室内機本体１からの吹出空
気の設定温度ｔ０を冷房運転時所定値上げ（暖房運転時
所定値下げ）るとともに、室内機本体１からの吹出空気
の温度ｔ１が新しく設定された温度ｔ０になるように圧
縮機制御器２１に圧縮機６の能力制御（能力減少）を行
わせる。The controller 22 raises the set temperature t0 of the air blown from the indoor unit body 1 by a predetermined value during the cooling operation (decreases the predetermined value during the heating operation), and newly sets the temperature t1 of the air blown from the indoor unit body 1. The compressor controller 21 controls the capacity of the compressor 6 (decreases the capacity) so as to reach the temperature t0.
【００３０】具体的に説明すると、リターン温度ｔ３が
設定リターン温度ｔ２より冷房時一定温度Ａ下がった場
合、一定吹出温度ｔ０を１５℃から１８℃に変化させ
る。このとき、被空調室１０への最大供給風量が５０m3
／min 、最小供給風量（換気必要風量）が２０m3／min
とすると、一定吹出温度ｔ０が１５℃のままであると、
能力は約４０％までしか減少させることができず、前述
した課題である被空調室１０の冷房負荷が４０％以下に
なった場合、室内の冷え過ぎが発生する。More specifically, when the return temperature t3 is lower than the set return temperature t2 by a constant temperature A during cooling, the constant blow temperature t0 is changed from 15 ° C. to 18 ° C. At this time, the maximum supply air volume to the air-conditioned room 10 is 50 m 3
/ Min, minimum supply airflow (ventilation required air amount) is 20 m 3 / min
Then, if the constant blowing temperature t0 remains at 15 ° C.,
The capacity can be reduced only to about 40%, and when the cooling load of the room to be air-conditioned 10 is 40% or less, which is the above-described problem, the room is overcooled.
【００３１】本実施例のように、制御装置２２によりリ
ターン温度ｔ３が設定リターン温度より、冷房運転時一
定値下がるか（暖房運転時一定値上がる）した場合、一
定吹出温度ｔ０を１８℃に変化させると、室内機１の吸
込温度が仮に２６℃とすると、２０（２６−１８）／５
０（２６−１５）＝０．２９より約２９％まで制御する
ことが、最小風量２０m3／min を確保しながら行うこと
ができる。As in the present embodiment, when the return temperature t3 falls below the set return temperature by the control device 22 by a certain value during cooling operation (or by a certain value during heating operation), the constant blowing temperature t0 is changed to 18 ° C. Assuming that the suction temperature of the indoor unit 1 is 26 ° C., 20 (26−18) / 5
Control from 0 (26-15) = 0.29 to about 29% can be performed while securing a minimum air flow of 20 m 3 / min.
【００３２】また暖房の場合も、冷房の場合と同様に、
暖房の能力制御範囲を、最小風量を確保しながら拡げる
ことができる。In the case of heating, as in the case of cooling,
The heating capacity control range can be expanded while ensuring the minimum air volume.
【００３３】以上のように、制御装置２２により、リタ
ーン温度ｔ３が設定リターン温度ｔ２より、冷房時一定
温度Ａ下がるか、暖房時一定温度Ｂ上がるかすると、吹
出空気温度の設定温度ｔ０を冷房時、所定値上げ、暖房
時、所定値下げることにより最低換気風量を確保しなが
ら、能力制御範囲を拡げることができ、被空調室１０の
空調負荷が減少した場合の室内の冷え過ぎ，暖まり過ぎ
を防止できる。As described above, when the return temperature t3 falls below the set return temperature t2 by the constant temperature A during cooling or the constant temperature B during heating, the controller 22 reduces the set temperature t0 of the blown air temperature during cooling. By increasing the predetermined value and decreasing the predetermined value during heating, it is possible to expand the capacity control range while securing the minimum ventilation air volume, and to prevent the room from being overcooled or overheated when the air-conditioning load of the room to be air-conditioned 10 is reduced. it can.
【００３４】以下別の本発明による空気調和機の一実施
例について図面を参照しながら説明するが、従来と同一
構成の部分は同一符号を付し、その詳細な説明は省略す
る。Hereinafter, another embodiment of the air conditioner according to the present invention will be described with reference to the drawings. The same components as those of the prior art will be denoted by the same reference numerals, and detailed description thereof will be omitted.
【００３５】図４は別の本発明の一実施例の空気調和機
の概略構成図、図５は同実施例の空気調和機のブロック
図、図６は同実施例の空気調和機の動作を示すフローチ
ャートである。FIG. 4 is a schematic configuration diagram of an air conditioner according to another embodiment of the present invention, FIG. 5 is a block diagram of the air conditioner of the embodiment, and FIG. 6 shows the operation of the air conditioner of the embodiment. It is a flowchart shown.
【００３６】図４において、ダクト式の室内機本体１
は、内部に室内側熱交換器２，室内側送風機３，吹出温
度検出器４，リターン温度検出器３０を具備している。
室外機本体５は、内部に能力可変式の圧縮機６，室外側
熱交換器７，室外側送風機８，圧縮機制御器３１を具備
している。In FIG. 4, a duct type indoor unit main body 1 is shown.
Is provided with an indoor heat exchanger 2, an indoor blower 3, an outlet temperature detector 4, and a return temperature detector 30 inside.
The outdoor unit main body 5 includes a compressor 6 having a variable capacity, an outdoor heat exchanger 7, an outdoor blower 8, and a compressor controller 31 inside.
【００３７】図５において、３２は本実施例の空気調和
機を制御する制御装置で、吹出温度を設定する（設定吹
出温度ｔ０）吹出温度設定器３３と、吹出温度検出器４
にて検出された吹出温度ｔ１と設定吹出温度ｔ０とを比
較する吹出温度比較器３４とリターン温度を設定する
（設定リターン温度ｔ２）リターン温度設定器３５と、
リターン温度検出器３０にて検出されたリターン温度ｔ
３と設定リターン温度ｔ２とを比較するリターン温度比
較器３６と、運転モードを検出する運転モード検出器３
７と、圧縮機６の停止回数Ｘをカウントするカウンター
３８を内蔵している。In FIG. 5, reference numeral 32 denotes a control device for controlling the air conditioner of the present embodiment, which is an outlet temperature setting device 33 for setting the outlet temperature (set outlet temperature t0), and an outlet temperature detector 4.
A blow-out temperature comparator 34 for comparing the blow-out temperature t1 detected at the above with the set blow-out temperature t0, and a return temperature setting unit 35 for setting a return temperature (set return temperature t2);
Return temperature t detected by return temperature detector 30
3 and a set return temperature t2, a return temperature comparator 36, and an operation mode detector 3 for detecting an operation mode
7 and a counter 38 for counting the number of stops X of the compressor 6.
【００３８】制御装置３２は、吹出温度比較器３４の比
較結果と運転モード検出器３７が検出する運転モードに
より圧縮機制御器３１を介して圧縮機６の能力を変化さ
せるとともに、カウンター３８による圧縮機停止回数ま
たは、リターン温度比較器２６の比較結果により吹出温
度設定器３３の設定温度を変化させる。The controller 32 changes the capacity of the compressor 6 via the compressor controller 31 in accordance with the comparison result of the blow-out temperature comparator 34 and the operation mode detected by the operation mode detector 37, and performs the compression by the counter 38. The set temperature of the blowout temperature setter 33 is changed according to the number of times of machine stoppage or the comparison result of the return temperature comparator 26.
【００３９】次にこの動作の具体例を冷房運転時の動作
を示す図６のフローチャートで説明する。Next, a specific example of this operation will be described with reference to the flowchart of FIG. 6 showing the operation during the cooling operation.
【００４０】可変風量ユニット１２の運転スイッチ１９
がＯＮの場合、室温調整器１７内の室温設定器１８ａに
て設定された設定室温Ｔ０と室温検出器１８ｂにて検出
された室温Ｔ１の差が、冷房持Ｔ１−Ｔ０＞０の場合、
風量制御装置１６はダクト１１内の風量が増加するよう
可変風量ユニット１２を制御する（ステップ４）。また
逆にＴ１−Ｔ０＜０の場合、ダクト１１内の風量を減少
させるよう制御する（ステップ４）。Operation switch 19 of the variable air volume unit 12
Is ON, if the difference between the set room temperature T0 set by the room temperature setting unit 18a in the room temperature controller 17 and the room temperature T1 detected by the room temperature detector 18b is T1-T0> 0,
The air volume control device 16 controls the variable air volume unit 12 so that the air volume in the duct 11 increases (step 4). Conversely, if T1-T0 <0, control is performed to reduce the air volume in the duct 11 (step 4).
【００４１】このとき被空調室１０の換気風量の確保の
ため、可変風量ユニット１２は、最低でもダクト１１内
の通過風量をあらかじめ設定した風量以下にはしない。
このようにダクト１１内の通過風量が変化するが、室内
機本体１内の吹出温度検出器４にて検出された吹出温度
ｔ１が常に吹出温度設定器３３の設定温度ｔ０になるよ
う圧縮機制御器３０は圧縮機６の能力を可変する（ステ
ップ５）。At this time, in order to secure the ventilation air volume of the room to be air-conditioned 10, the variable air volume unit 12 does not reduce the air volume passing through the duct 11 at least below a preset air volume.
As described above, although the amount of air passing through the duct 11 changes, the compressor control is performed such that the outlet temperature t1 detected by the outlet temperature detector 4 in the indoor unit main body 1 always becomes the set temperature t0 of the outlet temperature setting device 33. The compressor 30 changes the capacity of the compressor 6 (step 5).
【００４２】また、制御装置３２は、吹出温度ｔ１が設
定温度ｔ０より、冷房時一定温度Ｃ下がるか（ｔ１−ｔ
０≦−Ｃ）、暖房時一定温度Ｄ上がるか（ｔ１−ｔ０≧
Ｄ）すると、圧縮機制御器３０により圧縮器６の運転を
停止させるよう制御させると共に（ステップ７）、前期
カウンター３８にてカウントした圧縮器６の停止回数Ｘ
が、所定時間内に所定回数発生した場合、可変風量ユニ
ットで送風を停止した場合による、急激な負荷の低下に
対し、吹出空気温度によるサーモＯＦＦの検知により、
空調負荷の低下と判断し、吹出温度設定器３３の設定温
度ｔ０を冷房時所定値上げ、暖房時所定値下げる（ステ
ップ６）。The control device 32 determines whether the blowing temperature t1 is lower than the set temperature t0 by a constant temperature C during cooling (t1-t).
0 ≦ −C) or whether the constant temperature D during heating rises (t1−t0 ≧
D) Then, the compressor controller 30 is controlled to stop the operation of the compressor 6 (step 7), and at the same time, the number of stop times X of the compressor 6 counted by the
However, when a predetermined number of times occur within a predetermined time, when the air supply is stopped by the variable air volume unit, a sudden decrease in the load is detected.
It is determined that the air-conditioning load has decreased, and the set temperature t0 of the outlet temperature setting device 33 is increased by a predetermined value during cooling and reduced by a predetermined value during heating (step 6).
【００４３】また、リターン温度ｔ３が設定リターン温
度ｔ２より、冷房時一定温度Ａ下がるか（ｔ３−ｔ２≦
−Ａ）、暖房時一定温度Ｂ上がるか（ｔ３−ｔ２≧Ｂ）
すると、被空調室全体の負荷低下と判断し、吹出温度設
定器３３の設定温度ｔ０を冷房時所定値上げ、暖房時所
定値下げる（ステップ６）。Whether the return temperature t3 is lower than the set return temperature t2 by a constant temperature A during cooling (t3−t2 ≦
-A) or does the constant temperature B increase during heating (t3-t2 ≧ B)
Then, it is determined that the load on the entire room to be air-conditioned is reduced, and the set temperature t0 of the outlet temperature setting device 33 is increased by a predetermined value during cooling and is decreased by a predetermined value during heating (step 6).
【００４４】制御装置３２は室内機本体１からの吹出空
気の設定温度ｔ０を冷房運転時所定値上げ（暖房運転時
所定値下げ）るとともに、室内機本体１からの吹出空気
の温度ｔ１が新しく設定された温度ｔ０になるように圧
縮機制御器３１に圧縮機６の能力制御（能力減少）を行
わせる。The control device 32 raises the set temperature t0 of the air blown from the indoor unit main body 1 by a predetermined value during the cooling operation (decreases the predetermined value during the heating operation), and newly sets the temperature t1 of the air blown from the indoor unit main body 1. The compressor controller 31 controls the capacity of the compressor 6 (reduces the capacity) so that the temperature t0 is reached.
【００４５】具体的に説明すると、圧縮器６の運転停止
が所定時間内に所定回数Ｘ発生した場合、または、リタ
ーン温度ｔ３が設定リターン温度ｔ２より冷房時一定温
度Ａ下がった場合、一定吹出温度ｔ０を１５℃から１８
℃に変化させる。このとき、被空調室１０への最大供給
風量が５０m3／min 、最小供給風量（換気必要風量）が
２０m3／min とすると、一定吹出温度ｔ０が１５℃のま
まであると、能力は約４０％までしか減少させることが
できず、前述した課題である被空調室１０の冷房負荷が
４０％以下になった場合、室内の冷え過ぎが発生する。More specifically, when the operation of the compressor 6 is stopped a predetermined number of times X within a predetermined time, or when the return temperature t3 falls below the set return temperature t2 by a constant temperature A during cooling, a constant blow temperature t0 from 15 ° C to 18
Change to ° C. At this time, assuming that the maximum supply air volume to the air-conditioned room 10 is 50 m 3 / min and the minimum supply air volume (required ventilation air volume) is 20 m 3 / min, if the constant blow temperature t0 remains at 15 ° C., the capacity is about If the cooling load of the room to be air-conditioned 10, which is the above-mentioned problem, becomes 40% or less, the room can be overcooled.
【００４６】本実施例のように、制御装置３２によりリ
ターン温度ｔ３が設定リターン温度より、冷房運転時一
定値下がるか（暖房運転時一定値上がる）した場合、一
定吹出温度ｔ０を１８℃に変化させると、室内機１の吸
込温度が仮に２６℃とすると２０（２６−１８）／５０
（２６−１５）＝０．２９より約２９％まで制御するこ
とが、最小風量２０m3／min を確保しながら行うことが
できる。As in the present embodiment, when the return temperature t3 is lower than the set return temperature by the control device 32 during the cooling operation (or increases during the heating operation), the constant blowing temperature t0 is changed to 18 ° C. Then, if the suction temperature of the indoor unit 1 is assumed to be 26 ° C., 20 (26−18) / 50
The control from (26-15) = 0.29 to about 29% can be performed while securing the minimum airflow of 20 m 3 / min.
【００４７】また暖房の場合も、冷房の場合と同様に、
暖房の能力制御範囲を、最小風量を確保しながら拡げる
ことができる。In the case of heating, as in the case of cooling,
The heating capacity control range can be expanded while ensuring the minimum air volume.
【００４８】以上のように、制御装置３２により、圧縮
機６の運転停止が所定時間内に所定回数Ｘ発生した場
合、可変風量ユニットで送風を停止した場合による、急
激な負荷の低下に対し、吹出空気温度によるサーモＯＦ
Ｆの検知により、空調負荷の低下が検出できるととも
に、リターン温度ｔ３が設定リターン温度ｔ２より、冷
房時一定温度Ａ下がるか、暖房時一定温度Ｂ上がるかし
た場合、リターン温度の検出により、被空調室全体の負
荷低下が検出でき、このとき、吹出空気温度の設定温度
ｔ０を冷房時、所定値上げ、暖房時、所定値下げること
により最低換気風量を確保しながら、能力制御範囲を拡
げることができ、被空調室１０の空調負荷が減少した場
合の室内の冷え過ぎ，暖まり過ぎを防止できる。As described above, when the operation of the compressor 6 is stopped a predetermined number of times X within the predetermined time by the control device 32, the sudden decrease in the load caused by the stoppage of the air supply by the variable air volume unit is as follows. Thermo OF by outlet air temperature
By detecting F, a decrease in the air conditioning load can be detected, and when the return temperature t3 falls below the set return temperature t2 by a constant temperature A during cooling or a constant temperature B during heating, the return temperature is detected to detect the air-conditioning target. A decrease in the load of the entire room can be detected. At this time, the capacity control range can be expanded while securing the minimum ventilation air volume by lowering the set temperature t0 of the blown air temperature during cooling, by a predetermined value, and during heating, by a predetermined value. In addition, when the air conditioning load of the room to be air-conditioned 10 is reduced, it is possible to prevent the room from being too cold or too warm.
【００４９】また、急激な負荷低下と、被空調室全体の
負荷低下の、両方の負荷低下を検出し、吹出空気温度の
設定温度を変更することで、被空調室における空気調和
機の能力制御範囲を、常に最小風量を確保しながら拡げ
ることができる。Further, by detecting both a sudden decrease in load and a decrease in the load of the whole room to be air-conditioned, and changing the set temperature of the blown air temperature, the capacity control of the air conditioner in the room to be air-conditioned is performed. The range can be expanded while always ensuring the minimum airflow.
【００５０】[0050]
【発明の効果】以上のように本発明の空気調和機は、制
御装置によりリターン温度ｔ３が設定リターン温度ｔ２
より、冷房時一定温度Ａ下がるか、暖房時一定温度Ｂ上
がるかすると、吹出空気温度の設定温度ｔ０を冷房時、
所定値上げ、暖房時、所定値下げる制御を行うので、被
空調室の空調負荷が低負荷時においても換気風量を確保
しながら十分能力制御を行うことができ、被空調室の冷
房時の冷え過ぎや、暖房時の暖まり過ぎを防止すること
ができ、快適な室内環境を維持することができるという
効果がある。As described above, in the air conditioner of the present invention, the return temperature t3 is set to the set return temperature t2 by the control device.
Thus, when the constant temperature A during cooling decreases or the constant temperature B during heating increases, the set temperature t0 of the blow-off air temperature is reduced during cooling,
Since the control for increasing the predetermined value and performing the control for lowering the predetermined value during heating is performed, even when the air-conditioning load of the room to be air-conditioned is low, sufficient capacity control can be performed while securing the ventilation air volume, and the room to be air-conditioned becomes too cold during cooling. In addition, it is possible to prevent overheating during heating and to maintain a comfortable indoor environment.
【００５１】また、別の本発明の空気調和機は、制御装
置により、圧縮機の運転停止が所定時間内に所定回数Ｘ
発生した場合、可変風量ユニットで送風を停止した場合
による、急激な負荷の低下に対し、吹出空気温度による
サーモＯＦＦの検知により、空調負荷の低下が検出でき
るとともに、リターン温度ｔ３が設定リターン温度ｔ２
より、冷房時一定温度Ａ下がるか、暖房時一定温度Ｂ上
がるかした場合、リターン温度の検出により、被空調室
全体の負荷低下が検出でき、このとき、吹出空気温度の
設定温度ｔ０を冷房時、所定値上げ、暖房時、所定値下
げることにより最低換気風量を確保しながら、能力制御
範囲を拡げることができ、被空調室の空調負荷が減少し
た場合の室内の冷え過ぎ，暖まり過ぎを防止できる。According to another air conditioner of the present invention, the controller stops the operation of the compressor a predetermined number of times X within a predetermined time.
If this occurs, the air conditioning load can be detected by detecting the thermo-OFF based on the blown air temperature, and the return temperature t3 can be detected as the set return temperature t2 in response to a sudden decrease in the load caused by stopping the air supply with the variable air volume unit.
If the constant temperature during cooling A decreases or the constant temperature during heating increases, the return temperature can be detected to detect a decrease in the load of the entire room to be conditioned. By increasing the predetermined value and decreasing the predetermined value during heating, the capacity control range can be expanded while securing the minimum ventilation air volume, and the room can be prevented from being overcooled or overheated when the air-conditioning load of the room to be air-conditioned decreases. .
【００５２】また、急激な負荷低下と、被空調室全体の
負荷低下の、両方の負荷低下を検出し、吹出空気温度の
設定温度を変更することで、被空調室における空気調和
機の能力制御範囲を、常に最小風量を確保しながら拡げ
ることができ、快適な室内環境を維持することができる
という効果がある。Further, by detecting both a sudden decrease in load and a decrease in the load of the whole room to be air-conditioned, and changing the set temperature of the blown air temperature, the capacity control of the air conditioner in the room to be air-conditioned is performed. The range can be expanded while always ensuring the minimum air volume, and there is an effect that a comfortable indoor environment can be maintained.
【図１】本発明による空気調和機の一実施例の概略構成
図FIG. 1 is a schematic configuration diagram of an embodiment of an air conditioner according to the present invention.
【図２】同実施例の空気調和機のブロック図FIG. 2 is a block diagram of the air conditioner of the embodiment.
【図３】同実施例の空気調和機の冷房運転時の動作を示
すフローチャートFIG. 3 is a flowchart showing an operation of the air conditioner of the embodiment during a cooling operation.
【図４】別の本発明による空気調和機の一実施例の概略
構成図FIG. 4 is a schematic configuration diagram of another embodiment of the air conditioner according to the present invention.
【図５】同実施例の空気調和機のブロック図FIG. 5 is a block diagram of the air conditioner of the embodiment.
【図６】同実施例の空気調和機の冷房運転時の動作を示
すフローチャートFIG. 6 is a flowchart showing the operation of the air conditioner of the embodiment during a cooling operation.
【図７】従来の空気調和機の概略構成図FIG. 7 is a schematic configuration diagram of a conventional air conditioner.
【図８】従来の空気調和機の冷房運転時の動作を示すフ
ローチャートFIG. 8 is a flowchart showing an operation of the conventional air conditioner during a cooling operation.
１ 室内機本体 ２ 室内側熱交換器 ３ 室内側送風機 ４ 吹出温度検出器 ５ 室外機本体 ６ 圧縮機 ７ 室外側熱交換器 ８ 室外側送風機 １０ 被空調室 １１ ダクト １２ 可変風量ユニット １６ 風量制御装置 ２０，３０ リターン温度検出器 ２１，３１ 圧縮機制御器 ２２，３２ 制御装置 REFERENCE SIGNS LIST 1 indoor unit main body 2 indoor heat exchanger 3 indoor blower 4 outlet temperature detector 5 outdoor unit main body 6 compressor 7 outdoor heat exchanger 8 outdoor blower 10 air-conditioned room 11 duct 12 variable air volume unit 16 air volume control device 20, 30 Return temperature detector 21, 31 Compressor controller 22, 32 Controller
Claims (2)
部に室内側熱交換器，室内側送風機を有するダクト式室
内機本体と、内部に能力可変式の圧縮機，室外側熱交換
器，室外側送風機を有する室外機本体と、前記室内機本
体より下流側のダクトに設けられ前記ダクトの通過風量
を変化させる可変風量ユニットと、空気調和機の運転モ
ードと前記被空調室の室温と設定室温とに応じて前記被
空調室の室温が設定室温に一致するよう前記可変風量ユ
ニットを制御する風量制御装置と、前記室内機本体から
の吹出空気温度を検出する吹出温度検出器と、前期室内
機本体に吸い込むリターン空気温度を検出するリターン
温度検出器と、前記圧縮機の運転を制御する圧縮機制御
器と、前記圧縮機制御器を制御する制御装置とを具備
し、前記制御装置は、前記吹出温度検出器にて検出した
吹出空気温度があらかじめ設定された設定温度になるよ
うに前記圧縮機制御器に前記圧縮機の能力制御を行わせ
るとともに、前期リターン温度検出器にて検出するリタ
ーン空気温度が、あらかじめ設定した温度より、冷房運
転時一定値下がるか、暖房運転時一定値上がるかする
と、吹出空気温度の設定温度を冷房運転時所定値上げ、
暖房運転時所定値下げることを特徴とした空気調和機。1. A duct-type indoor unit body provided in a duct communicating with a room to be air-conditioned and having an indoor-side heat exchanger and an indoor-side blower therein, and a variable-capacity compressor, an outdoor-side heat exchanger therein. An outdoor unit main body having an outdoor blower, a variable air volume unit provided in a duct downstream of the indoor unit main body to change an air flow rate through the duct, an operation mode of the air conditioner, and setting of a room temperature of the room to be air-conditioned. An air volume control device that controls the variable air volume unit so that the room temperature of the room to be air-conditioned matches the set room temperature in accordance with the room temperature, an air temperature detector that detects the temperature of air blown from the indoor unit main body, A return temperature detector for detecting a return air temperature sucked into the machine body, a compressor controller for controlling operation of the compressor, and a control device for controlling the compressor controller, the control device comprising: The compressor controller controls the performance of the compressor so that the blow-off air temperature detected by the blow-out temperature detector becomes a preset temperature, and returns the return temperature detected by the return temperature detector. If the air temperature is lower than the preset temperature by a certain value during the cooling operation or by a certain value during the heating operation, the set temperature of the blowing air temperature is increased by a predetermined value during the cooling operation,
An air conditioner characterized by lowering a predetermined value during heating operation.
部に室内側熱交換器，室内側送風機を有するダクト式室
内機本体と、内部に能力可変式の圧縮機，室外側熱交換
器，室外側送風機を有する室外機本体と、前記室内機本
体より下流側のダクトに設けられ前記ダクトの通過風量
を変化させる可変風量ユニットと、空気調和機の運転モ
ードと前記被空調室の室温と設定室温とに応じて前記被
空調室の室温が設定室温に一致するよう前記可変風量ユ
ニットを制御する風量制御装置と、前記室内機本体から
の吹出空気温度を検出する吹出温度検出器と、前期室内
機本体に吸い込むリターン空気温度を検出するリターン
温度検出器と、前記圧縮機の運転を制御する圧縮機制御
器と、前記圧縮機制御器を制御する制御装置とを具備
し、前記制御装置は、前記吹出温度検出器にて検出した
吹出空気温度があらかじめ設定された設定温度になるよ
うに前記圧縮機制御器に前記圧縮機の能力制御を行わせ
るとともに、吹出空気温度が設定温度より、冷房時一定
温度下がるか、暖房時一定温度上がるかすると、圧縮機
の運転を停止させ、圧縮機の運転停止が所定時間内に所
定回数発生した場合、または、リターン空気温度が設定
温度より、冷房時一定温度下がるか、暖房時一定温度上
がるかした場合、吹出空気温度の設定温度を冷房運転時
所定値上げ、暖房運転時所定値下げることを特徴とした
空気調和機。2. A duct type indoor unit body provided in a duct communicating with a room to be air-conditioned and having an indoor side heat exchanger and an indoor side blower therein, and a variable capacity compressor, an outdoor side heat exchanger inside, An outdoor unit main body having an outdoor blower, a variable air volume unit provided in a duct downstream of the indoor unit main body to change an air flow rate through the duct, an operation mode of the air conditioner, and setting of a room temperature of the room to be air-conditioned. An air volume control device that controls the variable air volume unit so that the room temperature of the room to be air-conditioned matches the set room temperature in accordance with the room temperature, an air temperature detector that detects the temperature of air blown from the indoor unit main body, A return temperature detector for detecting a return air temperature sucked into the machine body, a compressor controller for controlling operation of the compressor, and a control device for controlling the compressor controller, the control device comprising: The compressor controller controls the performance of the compressor so that the blow-out air temperature detected by the blow-out temperature detector becomes a preset set temperature, and the blow-out air temperature becomes lower than the set temperature during cooling. When the temperature drops or the temperature rises during heating, the operation of the compressor is stopped, and when the operation of the compressor is stopped a predetermined number of times within a predetermined time, or when the return air temperature is lower than the set temperature and the cooling operation is constant. An air conditioner characterized in that when a temperature drops or a certain temperature rises during heating, the set temperature of the blow-out air temperature is increased by a predetermined value during a cooling operation and decreased by a predetermined value during a heating operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07949192A JP3144884B2 (en) | 1992-04-01 | 1992-04-01 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07949192A JP3144884B2 (en) | 1992-04-01 | 1992-04-01 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05280791A JPH05280791A (en) | 1993-10-26 |
| JP3144884B2 true JP3144884B2 (en) | 2001-03-12 |
Family
ID=13691377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07949192A Expired - Fee Related JP3144884B2 (en) | 1992-04-01 | 1992-04-01 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3144884B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5445493B2 (en) * | 2011-03-16 | 2014-03-19 | 株式会社富士通ゼネラル | Multi-room air conditioner |
| CN102778873B (en) * | 2012-07-09 | 2015-09-30 | 美的集团股份有限公司 | The on-line system of air conditioner electric fan and control method thereof |
| CN104110367A (en) * | 2013-04-22 | 2014-10-22 | 合肥美的暖通设备有限公司 | Low-pressure-chamber compressor system and superheat degree control method thereof and outdoor unit |
| JP7417810B2 (en) * | 2021-05-12 | 2024-01-19 | パナソニックＩｐマネジメント株式会社 | air conditioning system |
-
1992
- 1992-04-01 JP JP07949192A patent/JP3144884B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05280791A (en) | 1993-10-26 |
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