JPH05280791A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH05280791A JPH05280791A JP4079491A JP7949192A JPH05280791A JP H05280791 A JPH05280791 A JP H05280791A JP 4079491 A JP4079491 A JP 4079491A JP 7949192 A JP7949192 A JP 7949192A JP H05280791 A JPH05280791 A JP H05280791A
- 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.)
- Granted
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
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 the ability to keep a blowout temperature constant.
【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 blowout temperature control, there is an air conditioner disclosed in JP-A-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。Hereinafter, an air conditioner for performing the above-described constant blowout temperature control will be described with reference to the drawings. Figure 7
Is a schematic configuration diagram showing a conventional air conditioner. Reference numeral 1 is a duct type indoor unit main body, which detects the temperature of air blown out by the indoor heat exchanger 2, the indoor blower 3, and the indoor blower 3. It has a blowout temperature detector 4. Reference numeral 5 is an outdoor unit body, which has a variable capacity compressor 6, an outdoor heat exchanger 7,
It has a compressor controller 9 for controlling the capabilities of the outdoor blower 8 and the compressor 6.
【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 body 1 to the air-conditioned room 10 and guides warm air or cold air to the air-conditioned room 10. A variable air volume unit 12 is provided in the middle of the duct 11, and the room temperature of the air-conditioned room 10 is controlled by changing the passing air volume. 13 is a return duct, which is the air-conditioned room 1
Air is introduced from 0 to the indoor unit body 1. 14 is an intake duct,
Reference numeral 15 denotes an exhaust duct, which includes an air supply duct 14 and an exhaust duct 15.
In each case, a fan as a supply / exhaust device was installed in the middle of the duct.
4a, 15a, which discharges a part of the air in the return duct 13 and supplies the 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 is an air volume control device of the variable air volume unit 12, which is detected by a room temperature detector Tb and a set room temperature T0 set by a room temperature setter 18a provided in a room temperature regulator 17 in the air-conditioned room 10. 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 passing air volume in the duct 11. Further, 19 is an operation switch of the variable air volume unit 12, and when the operation switch 19 is off, the variable air volume unit 12
The damper inside is closed to stop the passing air volume and stop the air conditioning.
【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。The operation of the air conditioner having the above-described configuration for performing the constant blowout temperature 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）。Operation switch 19 of variable air volume unit 12
When is ON, the damper in the variable air volume unit 12 is opened, air conditioning is started, and the room temperature setting device 18 in the room temperature adjusting device 17 is started.
The difference between the set room temperature T0 set in a and the room temperature T1 detected by the room temperature detector 18b (step a) is T1 during cooling / heating.
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). On the contrary, when T1-T0 <0, the duct 11
Control is performed 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 air-conditioned room 10, the variable air volume unit 12 does not set the passing air volume in the duct 11 to a value equal to or lower than a preset air volume at a minimum.
Although the amount of air passing through the duct 11 changes in this way, the compressor controller 9 controls the capacity of the compressor 6 so that the blowout temperature detected by the blowout temperature detector 4 in the indoor unit body 1 is always constant. Change (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 blown from the indoor unit body 1 at a constant blowout temperature, and the variable air volume unit 12 changes the amount of air supplied into the air-conditioned room 10 to air-condition the air-conditioned room 10. 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 configuration, even if the air conditioning load of the air-conditioned room is reduced, it is not possible to reduce the supply air volume below a certain level in order to secure the ventilation air volume, so that the air conditioning is not possible. At the time, the air-conditioned room is too cold, and when it is heated, it is too warm, that is, the capacity 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 air-conditioned room is reduced, the air-conditioned room is not over-cooled during cooling or over-heated during heating, and the ventilation air volume is secured to maintain a comfortable indoor environment. To 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, in the air conditioner of the present invention, an outlet temperature detector for detecting the temperature of the air blown from the main body of the indoor unit and a return temperature detector for detecting the return air temperature. A compressor, a compressor controller that controls the operation of the compressor, and a controller that controls 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。Then, 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 reaches a preset set temperature, and the return temperature is set. When the temperature falls below a certain temperature during cooling or rises above a certain temperature during heating, the set temperature of the blown air temperature is controlled to increase by a predetermined value during cooling operation and decrease by a predetermined value during 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, a blowout temperature detector for detecting the temperature of blown air from the indoor unit body,
A return temperature detector that detects the return air temperature, a compressor controller that controls the operation of the compressor, and a controller that controls the compressor controller are provided.
【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。Then, the control device causes the compressor controller to control the capacity of the compressor so that the blown air temperature detected by the blown air temperature detector becomes a preset temperature, and the blown air temperature is controlled. When is lower than the set temperature by a certain temperature during cooling or rises by a certain temperature during heating, the operation of the compressor is stopped (thermo OFF), and the operation stop of the compressor occurs a predetermined number of times within a predetermined time, or When the return air temperature falls below the set temperature by a certain temperature during cooling or rises by a certain temperature during heating, it is configured to perform control to raise the set temperature of the blowout air temperature by a specified value during cooling operation and decrease by a specified value during heating operation. is 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 in the air-conditioned room is reduced, the variable air flow unit reduces the amount of air passing through the duct, and the temperature of the air blown out of the air conditioner decreases during cooling and rises during heating. However, at this time, the control device controls the capacity of the compressor so as to keep the blown air temperature constant.
Also, if the return air temperature falls below the set temperature by a certain temperature during cooling or rises 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 cooling operation (lowers a predetermined value during heating operation). At the same time, the compressor controller controls the capacity of the compressor so that the temperature of the air blown out from the indoor unit becomes the newly set temperature (capacity reduction).
To perform.
【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 air-conditioned room as a whole, and the temperature of the air blown out from the indoor unit body rises by a predetermined value during cooling operation (decreases by a predetermined value during 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 the variable air volume unit can reduce the air volume to the minimum air volume (ventilation air volume), further reducing the compressor capacity. Despite the fact that there is no load, continuous supply of cold air during cooling and warm air during heating is eliminated, and deterioration of comfort due to overcooling and overheating is prevented.
【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。In another air conditioner of the present invention, when the air-conditioning load of the air-conditioned room is reduced, the variable air volume unit reduces the amount of air passing through the duct, and the temperature of the air blown out of the air conditioner decreases during cooling and heating. The control device controls the capacity of the compressor to keep the temperature of the blown air constant at this time, and the temperature of the blown air falls below the set temperature by a certain temperature during cooling or a certain temperature during heating. If so, the operation of the compressor is stopped (thermo OFF), if the operation of the compressor is stopped a predetermined number of times within a predetermined time, or if the return air temperature falls below the set temperature by a certain temperature during cooling or during heating. When the temperature rises by a certain level, the control device raises the set temperature of the air blown from the indoor unit body by a specified value during cooling operation (decreases the specified value during heating operation) and the air discharged from the indoor unit 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 load caused when the variable air volume unit stops blowing air, a decrease in air conditioning load can be detected by detecting thermo-OFF due to the blown air temperature, and a return temperature can be detected. It is possible to detect a load reduction in the air-conditioned room as a whole. At this time, the temperature of the air blown from the indoor unit rises by a predetermined value during cooling operation (decreases by a predetermined value during heating operation), and even if the air-conditioning load in the air-conditioned room is the same, the variable air volume Due to this, the air volume passing through the duct increases, and since the variable air volume unit can reduce the air volume to the minimum air volume (ventilation air volume), the capacity of the compressor can be further reduced and there is no load. The purpose of the present invention is to prevent the continuous supply of the hot air during the cooling and the hot air during the heating, and to prevent the deterioration of comfort caused by too cold and too warm.
【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 An embodiment of an air conditioner according to the present invention will be described below with reference to the drawings. The parts having the same constructions as in the prior art will be designated by the same reference numerals and detailed description thereof will be omitted.
【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 same embodiment,
FIG. 3 is a flowchart showing the operation of the air conditioner of the same 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 body 1
Includes an indoor heat exchanger 2, an indoor blower 3, an outlet temperature detector 4, and a return temperature detector 20.
The outdoor unit main body 5 includes therein a variable capacity compressor 6, an outdoor heat exchanger 7, an outdoor blower 8, and a compressor controller 21.
【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 of the present embodiment, which is a blowout temperature setting device 23 for setting a blowout temperature (set blowout temperature t0) and a blowout temperature detector 4.
An outlet temperature comparator 24 that compares the outlet temperature t1 detected in step 1 with the set outlet temperature t0; a return temperature setter 25 that sets a return temperature (set return temperature t2);
Return temperature t detected by the return temperature detector 20
3 and the set return temperature t2, a return temperature comparator 26 and an operation mode detector 2 for detecting an operation mode
7 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 blowout 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 setting device 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）。Operation switch 19 of variable air volume unit 12
When is ON, the damper in the variable air volume unit 12 is opened, air conditioning is started, and the room temperature setting device 18 in the room temperature adjusting device 17 is started.
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 the cooling capacity T1-T0> 0, the air volume control device 16 is variable to increase the air volume in the duct 11. The air volume unit 12 is controlled (step 1).
On the contrary, when T1-T0 <0, the air volume in the duct 11 is controlled to be reduced (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 air-conditioned room 10, the variable air volume unit 12 does not make the air volume passing through the duct 11 at least a preset air volume.
Although the amount of air passing through the duct 11 changes in this way, the compressor is controlled so that the blowout temperature t1 detected by the blowout temperature detector 4 in the indoor unit body 1 always becomes the set temperature t0 of the blowout temperature setter 23. The device 20 changes 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）。Further, the controller 22 controls the return temperature t3.
Is lower than the set return temperature t2 by a constant temperature A during cooling (t3-t2≤-A) or higher by a constant temperature B during heating (t3-t2≥B), it is determined that the load on the entire air-conditioned room has decreased, The preset temperature t0 of the blowout 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 main body 1 by a predetermined value during the cooling operation (decreases the predetermined value during the heating operation), and the temperature t1 of the air blown out from the indoor unit main body 1 is newly set. The compressor controller 21 is caused to perform capacity control (capacity reduction) of the compressor 6 so as to attain 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 the constant temperature A during cooling, the constant outlet 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 air volume (ventilation required air volume) is 20m 3 / min
Then, if the constant outlet temperature t0 remains at 15 ° C.,
The capacity can be reduced only to about 40%, and when the cooling load of the air-conditioned room 10 which is the above-mentioned problem becomes 40% or less, overcooling of the room occurs.
【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 is lower than the set return temperature by the controller 22 by a constant value during the cooling operation (increased by the constant value during the heating operation), the constant outlet temperature t0 is changed to 18 ° C. Then, assuming that the suction temperature of the indoor unit 1 is 26 ° C., 20 (26-18) / 5
It is possible to control from 0 (26-15) = 0.29 to about 29% while ensuring a minimum air volume 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。Also 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 control device 22 makes the return temperature t3 lower than the set return temperature t2 by the constant temperature A during cooling or by the constant temperature B during heating, the set temperature t0 of the blown air temperature during cooling is reduced. , It is possible to expand the capacity control range while ensuring the minimum ventilation air volume by raising the specified value and lowering the specified value during heating, and prevent the room from over-cooling or over-heating when the air-conditioning load of the air-conditioned room 10 decreases. 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 parts having the same structures as those of the conventional one will be designated by the same reference numerals, and the 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 block diagram of another embodiment of the air conditioner of the present invention, FIG. 5 is a block diagram of the air conditioner of the same embodiment, and FIG. 6 shows the operation of the air conditioner of the same 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 body 1
Is equipped 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 variable capacity compressor 6, 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 a blowout temperature setting device 33 for setting a blowout temperature (set blowout temperature t0) and a blowout temperature detector 4.
An outlet temperature comparator 34 that compares the outlet temperature t1 detected in step 3 with the set outlet temperature t0; and a return temperature setter 35 that sets a return temperature (set return temperature t2).
Return temperature t detected by the return temperature detector 30
3 and the 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 that counts the number X of times the compressor 6 has stopped.
【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 according to the comparison result of the blowout temperature comparator 34 and the operation mode detected by the operation mode detector 37, and the compression by the counter 38 is performed. The set temperature of the blowout temperature setting device 33 is changed according to the number of times the machine is stopped 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 variable air volume unit 12
Is ON, when the difference between the set room temperature T0 set by the room temperature setter 18a in the room temperature adjuster 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). On the contrary, when T1-T0 <0, the air volume in the duct 11 is controlled to be reduced (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 air-conditioned room 10, the variable air volume unit 12 does not make the air volume passing through the duct 11 at least below a preset air volume.
Although the amount of air passing through the duct 11 changes in this manner, the compressor is controlled so that the blowout temperature t1 detected by the blowout temperature detector 4 in the indoor unit body 1 always becomes the set temperature t0 of the blowout temperature setter 33. The device 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）。Further, the controller 32 determines whether the blowout temperature t1 is lower than the set temperature t0 by the constant temperature C during cooling (t1-t).
0≤-C), whether the constant temperature D rises during heating (t1-t0≥
D) Then, the compressor controller 30 controls to stop the operation of the compressor 6 (step 7), and the number of times the compressor 6 is stopped X counted by the previous period counter 38.
However, if it occurs a predetermined number of times within a predetermined time, due to the sudden decrease in load due to the stop of air blowing by the variable air volume unit, the detection of thermo OFF due to the blown air temperature causes
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 decreased 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 the constant temperature A during cooling (t3-t2≤)
-A), whether the constant temperature B rises during heating (t3-t2 ≧ B)
Then, it is determined that the load on the entire air-conditioned room has decreased, and the set temperature t0 of the outlet temperature setting device 33 is increased by a predetermined value during cooling and 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 in the cooling operation (decreases the predetermined value in the heating operation), and the temperature t1 of the air blown from the indoor unit main body 1 is newly set. The compressor controller 31 is caused to perform capacity control (capacity reduction) of the compressor 6 so as to attain the temperature t0.
【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, if the compressor 6 is stopped for a predetermined number of times X within a predetermined time, or if the return temperature t3 is lower than the set return temperature t2 by a constant temperature A during cooling, the constant outlet temperature is set. t0 from 15 ℃ to 18
Change to ℃. At this time, if 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 blowout temperature t0 remains at 15 ° C, the capacity is about If the cooling load of the air-conditioned room 10 is 40% or less, which can be reduced only to 40%, the room is 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 by a constant value during the cooling operation (increased by the constant value during the heating operation), the constant outlet temperature t0 is changed to 18 ° C. Then, if the suction temperature of the indoor unit 1 is 26 ° C., it is 20 (26-18) / 50.
It is possible to control from (26-15) = 0.29 to about 29% while ensuring the minimum air flow rate 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。Also 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, by the control device 32, when the operation of the compressor 6 is stopped for a predetermined number of times X within a predetermined time, and when the blowing is stopped by the variable air volume unit, the load is suddenly reduced. Thermo OF depending on blown air temperature
By detecting F, it is possible to detect a decrease in the air conditioning load, and when the return temperature t3 is lower than the set return temperature t2 by the constant temperature A during cooling or by the constant temperature B during heating, the return temperature is detected to detect the air conditioning. It is possible to detect the load reduction of the entire room, and at this time, it is possible to expand the capacity control range while ensuring the minimum ventilation air volume by increasing the preset temperature t0 of the blown air temperature during cooling, by increasing the predetermined value, and by decreasing the predetermined value during heating. It is possible to prevent the room from being over-cooled or over-heated when the air-conditioning load of the air-conditioned room 10 is reduced.
【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 load decrease and a load decrease in the entire air-conditioned room and changing the set temperature of the blown air temperature, the capacity control of the air conditioner in the air-conditioned room is controlled. The range can be expanded while always ensuring the minimum air volume.
【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 by the control device and the return temperature t2 is set.
As a result, when the cooling constant temperature A decreases or the heating constant temperature B increases, the set temperature t0 of the blown air temperature becomes
Since the control is performed to raise the prescribed value and lower the prescribed value during heating, sufficient capacity control can be performed while securing the ventilation air volume even when the air conditioning load of the air-conditioned room is low, and the air-conditioned room is too cold during cooling. Moreover, there is an effect that it is possible to prevent overheating during heating and 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。In 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.
When it occurs, the air-conditioning load decrease can be detected and the return temperature t3 can be detected by detecting the thermo OFF due to the blown-air temperature against the sudden decrease in the load due to the stop of air blowing by the variable air volume unit.
Therefore, when the cooling constant temperature A decreases or the heating constant temperature B increases, the load decrease of the entire air-conditioned room can be detected by detecting the return temperature. At this time, the set temperature t0 of the blown air temperature is set to the cooling temperature. , It is possible to expand the capacity control range while securing the minimum ventilation air volume by raising the specified value and lowering the specified value during heating, and it is possible to prevent the room from overcooling or overheating when the air conditioning load of the air-conditioned room 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 load decrease and a load decrease in the entire air-conditioned room and changing the set temperature of the blown air temperature, the capacity of the air conditioner in the air-conditioned room can be controlled. There is an effect that the range can be expanded while always ensuring the minimum air volume, and 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 same 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 during a cooling operation of the air conditioner of the embodiment.
【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 same 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 an operation during a cooling operation of the air conditioner of the embodiment.
【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 during a cooling operation of the conventional air conditioner.
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 1 Indoor Unit Main Body 2 Indoor Heat Exchanger 3 Indoor Side Blower 4 Outlet Temperature Detector 5 Outdoor Unit Main Body 6 Compressor 7 Outdoor Heat Exchanger 8 Outdoor Air 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 Control device
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 main body having an indoor side heat exchanger and an indoor side blower provided in a duct communicating with an air-conditioned room, a variable capacity compressor, an outdoor side heat exchanger, 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 for changing the amount of air passing through the duct, an operation mode of an air conditioner, and a room temperature of the air-conditioned room An air volume control device that controls the variable air volume unit so that the room temperature of the air-conditioned room matches the set room temperature according to the room temperature, a blowout temperature detector that detects the blown air temperature from the indoor unit body, and A return temperature detector for detecting a return air temperature sucked into the main body of the machine, a compressor controller for controlling the operation of the compressor, and a controller for controlling the compressor controller, wherein the controller is Return to be detected by the previous term return temperature detector while causing 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 temperature. If the air temperature falls below a preset temperature by a certain value during cooling operation or rises by a certain value during heating operation, the set temperature of blown air temperature is increased by a predetermined value during 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 main body having an indoor side heat exchanger and an indoor side blower provided in a duct communicating with an air-conditioned room, a variable capacity compressor, an outdoor side heat exchanger, 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 for changing the amount of air passing through the duct, an operation mode of an air conditioner, and a room temperature of the air-conditioned room. An air volume control device that controls the variable air volume unit so that the room temperature of the air-conditioned room matches the set room temperature according to the room temperature, a blowout temperature detector that detects the blown air temperature from the indoor unit body, and A return temperature detector that detects the temperature of the return air sucked into the main body of the machine, a compressor controller that controls the operation of the compressor, and a controller that controls the compressor controller. While allowing the compressor controller to control the capacity of the compressor so that the blown air temperature detected by the blown air temperature detector becomes a preset temperature, the blown air temperature is lower than the preset temperature during cooling. If the temperature decreases by a certain amount or rises by a certain amount during heating, the operation of the compressor is stopped, and if the compressor is stopped for a certain number of times within a certain time, or if the return air temperature is lower than the set temperature and is constant during cooling. An air conditioner characterized in that, when the temperature is lowered or a certain temperature is raised during heating, the set temperature of the blown air temperature is raised by a predetermined value during cooling operation and lowered by a predetermined value during 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 true JPH05280791A (en) | 1993-10-26 |
| JP3144884B2 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) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012193901A (en) * | 2011-03-16 | 2012-10-11 | Fujitsu General Ltd | Multi-room type air conditioner |
| CN102778873A (en) * | 2012-07-09 | 2012-11-14 | 广东美的电器股份有限公司 | On-line system for 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 |
| JP2022174760A (en) * | 2021-05-12 | 2022-11-25 | 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
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012193901A (en) * | 2011-03-16 | 2012-10-11 | Fujitsu General Ltd | Multi-room type air conditioner |
| CN102778873A (en) * | 2012-07-09 | 2012-11-14 | 广东美的电器股份有限公司 | On-line system for 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 |
| JP2022174760A (en) * | 2021-05-12 | 2022-11-25 | パナソニックＩｐマネジメント株式会社 | air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3144884B2 (en) | 2001-03-12 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |