JPH062920A - Controller for air conditioner - Google Patents
Controller for air conditionerInfo
- Publication number
- JPH062920A JPH062920A JP4162607A JP16260792A JPH062920A JP H062920 A JPH062920 A JP H062920A JP 4162607 A JP4162607 A JP 4162607A JP 16260792 A JP16260792 A JP 16260792A JP H062920 A JPH062920 A JP H062920A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- valve
- way valve
- room temperature
- indoor
- 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)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、空気調和機の制御装置
に関し、詳しくは除湿運転時の室温調整に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an air conditioner, and more particularly to room temperature adjustment during dehumidifying operation.
【０００２】[0002]
【従来の技術】従来、ヒートポンプ式空気調和機におい
て、除湿運転時に冷却ユニットを冷房運転し室内空気の
除湿を行っているが、室内温度を下げ過ぎないように、
圧縮機の冷房能力を下げて運転するようにし、同時に室
内側送風機の回転数を低くして吹出風量を抑え、除湿能
力を上げ室内温度の低下を防止するようにしている。し
かしながら、除湿運転を継続すると、図４（ｂ）に示す
ように室内温度が徐々に低下して、室温コントロールに
より圧縮機を停止し、室内温度が上昇し所定の温度に達
すると再度圧縮機の運転を開始するようにオンオフ動作
を繰り返し、室温検出センサ部の温度と居住空間温度の
差を生じ、室内側送風機の風量を落しているために、居
住空間特に床面近傍に冷気が溜まり、設定した温度より
低くなり、冷え過ぎにより利用者に不快感を与える場合
が発生している。また、圧縮機がオフしている間に室内
側送風機を運転し室内空気を循環させ除湿するようにし
ても、既に除湿運転により蒸発器に付着している凝縮水
が送風機により散乱して室内に戻り、結果として室内の
湿度を高めてしまい、有効な除湿運転を行うことができ
ながつた。2. Description of the Related Art Conventionally, in a heat pump type air conditioner, a cooling unit is cooled to perform dehumidification of indoor air during dehumidification operation.
The compressor is operated with a reduced cooling capacity, and at the same time, the rotation speed of the indoor blower is reduced to suppress the amount of blown air, the dehumidification capacity is increased, and the indoor temperature is prevented from decreasing. However, when the dehumidifying operation is continued, the room temperature gradually decreases as shown in FIG. 4 (b), the compressor is stopped by the room temperature control, and when the room temperature rises and reaches a predetermined temperature, the compressor is restarted. The on / off operation is repeated to start the operation, a difference between the temperature of the room temperature detection sensor and the living space temperature is generated, and the air volume of the indoor blower is reduced. There is a case where the temperature becomes lower than the above temperature and the user feels uncomfortable due to too cold. Even if the indoor blower is operated to circulate the indoor air to dehumidify it while the compressor is off, the condensed water already attached to the evaporator due to the dehumidification operation is scattered by the blower and is discharged indoors. As a result, the humidity inside the room was raised as a result, and effective dehumidification operation could not be performed.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上記従来の
問題点に鑑みなされたもので、除湿運転時に室内温度の
冷え過ぎを防止する空気調和機の制御装置を提供するこ
とを目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a control device for an air conditioner which prevents the room temperature from becoming too cold during dehumidifying operation. .
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に、室内側熱交換器と四方弁との間に電磁開閉弁を設け
るとともに、同室内側熱交換器と並列に補助熱交換器と
逆止弁を配置し、除湿運転時に前記四方弁を冷房側に切
換え前記電磁開閉弁を開放して冷房運転し、室内温度が
所定室温範囲の下限値を下回ると、同四方弁を暖房側に
切換え同電磁開閉弁を閉じて前記補助熱交換器を通して
暖房運転するようにした。In order to achieve the above object, an electromagnetic on-off valve is provided between an indoor heat exchanger and a four-way valve, and an auxiliary heat exchanger is installed in parallel with the indoor heat exchanger. A stop valve is placed, and during dehumidification operation, the four-way valve is switched to the cooling side, the electromagnetic on-off valve is opened to perform cooling operation, and when the room temperature falls below the lower limit value of the predetermined room temperature range, the four-way valve is switched to the heating side. The electromagnetic on-off valve was closed and heating operation was performed through the auxiliary heat exchanger.
【０００５】[0005]
【作用】上記の構成によれば、除湿運転開始時に四方弁
を冷房側に切換え室内側熱交換器に冷媒を流し、循環す
る室内空気の温度が所定の室内温度範囲の下限値に達し
た時に、四方弁を暖房側に切換えるとともに電磁開閉弁
を閉じて補助熱交換器にホットガスを流して室内空気の
冷え過ぎを防ぎ、循環する室内空気の温度が上記室内温
度範囲の上限値に達した時に四方弁を冷房側に切換え、
電磁開閉弁を開き補助熱交換器に冷媒を流すようにし、
以上の交互繰り返しにより室内空気の除湿を行うように
している。According to the above construction, when the dehumidifying operation is started, the four-way valve is switched to the cooling side to cause the refrigerant to flow through the indoor heat exchanger, and when the temperature of the circulating indoor air reaches the lower limit value of the predetermined indoor temperature range. , Switching the four-way valve to the heating side and closing the electromagnetic on-off valve to flow hot gas to the auxiliary heat exchanger to prevent overcooling of the indoor air, and the temperature of the circulating indoor air has reached the upper limit of the above indoor temperature range. Sometimes the four-way valve is switched to the cooling side,
Open the solenoid on-off valve to allow the refrigerant to flow to the auxiliary heat exchanger,
The indoor air is dehumidified by repeating the above alternately.
【０００６】[0006]
【実施例】本発明の実施例を添付図面を参照して詳細に
説明する。図１は本発明の構成を示す室内機の要部断面
側面図で、室内空気は吸込口１から室内側熱交換器Ａを
通り熱交換を行い、導風路２内に設けられた室内側送風
機３により吹出口４から室内に吹き出され、この経路を
循環している。室内側熱交換器Ａの内側に補助熱交換器
Ｂが設けられている。Embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional side view of a main part of an indoor unit showing a configuration of the present invention, in which indoor air is heat-exchanged from an inlet 1 through an indoor heat exchanger A, and indoor air is provided in an air guide passage 2. It is blown into the room from the blower outlet 4 by the blower 3 and circulates in this path. An auxiliary heat exchanger B is provided inside the indoor heat exchanger A.
【０００７】図２は本発明の冷媒回路で、圧縮機５で高
温高圧に圧縮された冷媒ガスは、四方弁６により冷房運
転時には室外側熱交換器７に送られ、室外空気と熱交換
して冷却され、膨張弁８を通過して室内側熱交換器Ａに
入り室内空気と熱交換して温められ、四方弁６を経て圧
縮機５の吸込側に戻る冷房サイクルの経路を循環して室
内空気を冷却している。暖房運転時には、圧縮機５で高
温高圧に圧縮された冷媒ガスは、四方弁６により室内側
熱交換器Ａおよび補助熱交換器Ｂに送られ、室内空気と
熱交換して冷却され、膨張弁８を通過して室内側熱交換
器Ａに入り室外空気と熱交換して温められ、四方弁６を
経て圧縮機５の吸込側に戻る暖房サイクルの経路を循環
して室内空気を温めている。FIG. 2 shows the refrigerant circuit of the present invention. The refrigerant gas compressed to high temperature and high pressure by the compressor 5 is sent to the outdoor heat exchanger 7 by the four-way valve 6 during the cooling operation and exchanges heat with the outdoor air. And is cooled by passing through the expansion valve 8 and enters the indoor heat exchanger A to exchange heat with the indoor air to be warmed, and then circulates in the cooling cycle path that returns to the suction side of the compressor 5 via the four-way valve 6. Cooling indoor air. During the heating operation, the refrigerant gas compressed to a high temperature and high pressure by the compressor 5 is sent to the indoor heat exchanger A and the auxiliary heat exchanger B by the four-way valve 6, is cooled by exchanging heat with the indoor air, and is then expanded. After passing through 8, the heat enters the indoor heat exchanger A to exchange heat with the outdoor air and is heated, and then circulates in the heating cycle path that returns to the suction side of the compressor 5 via the four-way valve 6 to warm the indoor air. .
【０００８】図３は本発明の制御装置の構成を示すブロ
ック図で、室内空気の湿度を検出する湿度検出センサ９
と、室内温度を検出する室温検出センサ10と、制御部11
と、圧縮機駆動回路12および四方弁切換回路13から構成
され、制御部11には予じめ設定した除湿時の室温の上限
制御値と下限制御値を記憶するメモリ14と室温検出セン
サ９の検出した室温と上記制御値を比較する比較回路15
が設けられている。湿度検出センサ９により室内空気の
湿度を検出し除湿を開始する時、圧縮機５の冷房能力を
下げて運転し、四方弁６を四方弁切換回路13により冷房
サイクルに切換え、室内側熱交換器Ａに冷媒ガスを流
し、吸込口１に設けた室温検出センサ９により循環する
室内空気の温度が所定の下限制御値ＴL に達した時に、
四方弁６を暖房側に切換えるとともに電磁開閉弁16を閉
じて補助熱交換器Ｂにのみ冷媒ガスを流して循環する室
内空気を温め、室内空気の温度が上限制御値ＴU に達し
た時に四方弁６を冷房側に切換え、電磁開閉弁16を開き
室内側熱交換器Ａに冷媒を流すようにし、以上交互に繰
り返すことにより室内空気の除湿を行うようにしてい
る。FIG. 3 is a block diagram showing the configuration of the control device of the present invention. A humidity detecting sensor 9 for detecting the humidity of indoor air.
A room temperature detection sensor 10 for detecting the room temperature, and a control unit 11
And a compressor drive circuit 12 and a four-way valve switching circuit 13, and a control unit 11 includes a memory 14 for storing an upper limit control value and a lower limit control value of the room temperature at the time of dehumidification set in advance, and a room temperature detection sensor 9. Comparison circuit 15 that compares the detected room temperature with the above control value
Is provided. When the humidity of the indoor air is detected by the humidity detection sensor 9 and dehumidification is started, the compressor 5 is operated by lowering the cooling capacity, the four-way valve 6 is switched to the cooling cycle by the four-way valve switching circuit 13, and the indoor heat exchanger is used. When the refrigerant gas is flown to A and the temperature of the room air circulated by the room temperature detection sensor 9 provided at the suction port 1 reaches a predetermined lower limit control value TL,
When the four-way valve 6 is switched to the heating side and the electromagnetic opening / closing valve 16 is closed to flow the refrigerant gas only to the auxiliary heat exchanger B to warm the circulating indoor air, the four-way valve is reached when the temperature of the indoor air reaches the upper limit control value TU. 6 is switched to the cooling side, the electromagnetic opening / closing valve 16 is opened to allow the refrigerant to flow through the indoor heat exchanger A, and the indoor air is dehumidified by alternately repeating the above.
【０００９】図４（ａ）は除湿運転時の室内空気の温度
変化を示し、居住空間温度は室温センサ部温度に追従
し、下限制御値ＴL に達した時に風量の低下により若干
低くなるが、冷房運転および暖房運転を繰り返しても、
図４（ｂ）の従来例のようにさらに低下することなく、
室内に冷気溜まりを発生しない。FIG. 4 (a) shows the temperature change of the indoor air during the dehumidifying operation. The living space temperature follows the temperature of the room temperature sensor, and when the lower limit control value TL is reached, the air volume decreases slightly, but Even if you repeat the cooling and heating operations,
Without further lowering as in the conventional example of FIG.
No cold air accumulation in the room.
【００１０】図５は本発明の動作フローチャートで、除
湿運転が開始されると、圧縮機５が運転開始し（21）、
同時に室内側送風機17の回転数を落して風量を下げ（2
2）、四方弁６を冷房側に切換え（23）、室内温度ＴR
が下限制御値ＴL （例えば設定温度ＴS −１°Ｃ）を下
回ると（24）、四方弁６を暖房側に切換えるとともに電
磁開閉弁16を閉じて補助熱交換器Ｂに高温高圧の冷媒ガ
スを流して循環する室内空気を温め（25）、室内温度Ｔ
R が上限制御値ＴU （例えば設定温度ＴS ＋２°Ｃ）を
上回ると（26）、四方弁６を冷房側に切換え電磁開閉弁
16を開き（27）、除湿運転を行い、同時に室温の冷え過
ぎを防止するようにしている。FIG. 5 is an operation flowchart of the present invention. When the dehumidifying operation is started, the compressor 5 is started (21),
At the same time, the rotation speed of the indoor blower 17 is reduced to reduce the air volume (2
2), switching the four-way valve 6 to the cooling side (23), room temperature TR
Is lower than the lower limit control value TL (for example, the set temperature TS -1 ° C) (24), the four-way valve 6 is switched to the heating side and the electromagnetic opening / closing valve 16 is closed to supply the auxiliary heat exchanger B with a high-temperature high-pressure refrigerant gas. Warm the indoor air that circulates and circulates (25), room temperature T
When R exceeds the upper limit control value TU (for example, set temperature TS + 2 ° C) (26), the four-way valve 6 is switched to the cooling side and the solenoid opening / closing valve is switched.
16 is opened (27) and the dehumidification operation is performed, and at the same time, it is designed to prevent the room temperature from becoming too cold.
【００１１】[0011]
【発明の効果】以上のように本発明においては、予じめ
設定温度の上下に上限制御値と下限制御値を設定して除
湿運転時の制御室温範囲を設け、この範囲内で四方弁を
切換えて冷房運転と暖房運転を交互に繰り返すことによ
り、室内空気の冷え過ぎを防止し、冷気溜まりを解消す
ることができる。As described above, in the present invention, the upper limit control value and the lower limit control value are set above and below the preset set temperature to provide the control room temperature range during dehumidification operation, and the four-way valve is set within this range. By switching and alternately repeating the cooling operation and the heating operation, it is possible to prevent the room air from overcooling and eliminate the cold air accumulation.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の構成を示す室内機の要部断面側面図で
ある。FIG. 1 is a cross-sectional side view of essential parts of an indoor unit showing a configuration of the present invention.
【図２】本発明の冷媒回路図である。FIG. 2 is a refrigerant circuit diagram of the present invention.
【図３】本発明の制御装置の構成を示すブロック図であ
る。FIG. 3 is a block diagram showing a configuration of a control device of the present invention.
【図４】除湿運転時の室内空気の温度変化を示す時系列
図である。FIG. 4 is a time series diagram showing a temperature change of indoor air during a dehumidifying operation.
【図５】本発明の動作フローチャートである。FIG. 5 is an operation flowchart of the present invention.
１ 吸込口 ２ 導風路 ３ 室内側送風機 ４ 吹出口 ５ 圧縮機 ６ 四方弁 ７ 室外側熱交換器 ８ 膨張弁 ９ 湿度検出センサ 10 室温検出センサ 11 制御部 12 圧縮機駆動回路 13 四方弁切換回路 14 メモリ 15 比較回路 16 電磁開閉弁 17 室内側送風機 18 逆止弁 Ａ 室内側熱交換器Ａ Ｂ 補助熱交換器Ｂ 1 Suction port 2 Air guide path 3 Indoor blower 4 Air outlet 5 Compressor 6 Four-way valve 7 Outdoor heat exchanger 8 Expansion valve 9 Humidity detection sensor 10 Room temperature detection sensor 11 Controller 12 Compressor drive circuit 13 Four-way valve switching circuit 14 Memory 15 Comparison circuit 16 Electromagnetic on-off valve 17 Indoor blower 18 Check valve A Indoor heat exchanger A B Auxiliary heat exchanger B
Claims (1)
換器、膨張弁、室内側熱交換器、四方弁を経て圧縮機の
吸込側に到る冷媒サイクルを形成してなる空気調和機に
おいて、上記室内側熱交換器と四方弁との間に電磁開閉
弁を設けるとともに、同室内側熱交換器と並列に補助熱
交換器と逆止弁を配置し、除湿運転時に前記四方弁を冷
房側に切換え前記電磁開閉弁を開放して冷房運転し、室
内温度が所定室温範囲の下限値を下回ると、同四方弁を
暖房側に切換え同電磁開閉弁を閉じて前記補助熱交換器
を通して暖房運転するようにしてなることを特徴とする
空気調和機の制御装置。1. An air conditioner that forms a refrigerant cycle from a discharge side of a compressor to a suction side of the compressor through a four-way valve, an outdoor heat exchanger, an expansion valve, an indoor heat exchanger, and a four-way valve. In the machine, an electromagnetic opening / closing valve is provided between the indoor heat exchanger and the four-way valve, and an auxiliary heat exchanger and a check valve are arranged in parallel with the indoor heat exchanger, and the four-way valve is operated during dehumidification operation. When switching to the cooling side, the electromagnetic on-off valve is opened to perform cooling operation, and when the indoor temperature falls below the lower limit value of the predetermined room temperature range, the four-way valve is switched to the heating side and the electromagnetic on-off valve is closed to pass through the auxiliary heat exchanger. A control device for an air conditioner, which is adapted to perform heating operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4162607A JP2765667B2 (en) | 1992-06-22 | 1992-06-22 | Control device for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4162607A JP2765667B2 (en) | 1992-06-22 | 1992-06-22 | Control device for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH062920A true JPH062920A (en) | 1994-01-11 |
| JP2765667B2 JP2765667B2 (en) | 1998-06-18 |
Family
ID=15757815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4162607A Expired - Fee Related JP2765667B2 (en) | 1992-06-22 | 1992-06-22 | Control device for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2765667B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015031501A (en) * | 2013-08-07 | 2015-02-16 | 三菱電機株式会社 | Heat-exchanger stationary plate and air conditioner |
| CN113465125A (en) * | 2021-06-17 | 2021-10-01 | 青岛海尔空调电子有限公司 | Defrosting control method of air conditioner, computer readable storage medium and control device |
| CN115371153A (en) * | 2022-08-22 | 2022-11-22 | 珠海格力电器股份有限公司 | Air conditioner and control method |
| WO2023000678A1 (en) * | 2021-07-20 | 2023-01-26 | 青岛海尔空调器有限总公司 | Indoor air conditioner unit and control method therefor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59202347A (en) * | 1983-05-04 | 1984-11-16 | Hitachi Ltd | Air conditioner |
-
1992
- 1992-06-22 JP JP4162607A patent/JP2765667B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59202347A (en) * | 1983-05-04 | 1984-11-16 | Hitachi Ltd | Air conditioner |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015031501A (en) * | 2013-08-07 | 2015-02-16 | 三菱電機株式会社 | Heat-exchanger stationary plate and air conditioner |
| CN113465125A (en) * | 2021-06-17 | 2021-10-01 | 青岛海尔空调电子有限公司 | Defrosting control method of air conditioner, computer readable storage medium and control device |
| CN113465125B (en) * | 2021-06-17 | 2023-05-26 | 青岛海尔空调电子有限公司 | Defrosting control method, computer readable storage medium and control device for air conditioner |
| WO2023000678A1 (en) * | 2021-07-20 | 2023-01-26 | 青岛海尔空调器有限总公司 | Indoor air conditioner unit and control method therefor |
| CN115371153A (en) * | 2022-08-22 | 2022-11-22 | 珠海格力电器股份有限公司 | Air conditioner and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2765667B2 (en) | 1998-06-18 |
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