JP2013133977A - Air conditioner - Google Patents
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- JP2013133977A JP2013133977A JP2011283220A JP2011283220A JP2013133977A JP 2013133977 A JP2013133977 A JP 2013133977A JP 2011283220 A JP2011283220 A JP 2011283220A JP 2011283220 A JP2011283220 A JP 2011283220A JP 2013133977 A JP2013133977 A JP 2013133977A
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- defrosting operation
- air conditioner
- heat exchanger
- demand signal
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Abstract
Description
本発明は、空気調和機のデマンド制御に関する。 The present invention relates to demand control of an air conditioner.
従来から、デマンド信号を用いることによって総電流量を抑制する空気調和機が提案されている（例えば、特許文献１参照）。 Conventionally, an air conditioner that suppresses the total amount of current by using a demand signal has been proposed (see, for example, Patent Document 1).
しかしながら、前記従来の構成では、除霜運転時にデマンド信号を受信した場合、運転電流値の上限規制がかかり、圧縮機周波数が下がるため、除霜運転最大時間を満たしても、室外熱交換器に着霜した霜を完全にとかすことができず、長時間暖房運転した場合、室外熱交換器に霜が堆積して、室内機からの吹出空気温度が下がり、快適性が悪化するという課題を有していた。 However, in the conventional configuration, when a demand signal is received during the defrosting operation, the upper limit of the operating current value is imposed and the compressor frequency is lowered. Therefore, even if the maximum time for the defrosting operation is satisfied, the outdoor heat exchanger If the frost that has formed cannot be completely melted and heating operation is performed for a long time, frost accumulates on the outdoor heat exchanger, resulting in a problem that the temperature of air blown out from the indoor unit is lowered and comfort is deteriorated. Was.
本発明は、前記従来の課題を解決するもので、デマンド制御中の快適性向上を図る空気調和機を提供することを目的とする。 The present invention solves the above-described conventional problems, and an object of the present invention is to provide an air conditioner that improves comfort during demand control.
前記従来の課題を解決するために、本発明の空気調和機は、除霜運転時は一定の除霜運転最大時間が経過するまで除霜運転を行うか、室外熱交換器の温度が所定の温度以上となるまで除霜運転を行い、デマンド信号を受信したときに運転電流値の合計を抑制する空気調和機であって、除霜運転時に前記デマンド信号を受信した場合は、除霜運転最大時間を延長することにより、除霜運転時間を延ばすことができるため、着霜した霜をより効果的に溶かすことができる。 In order to solve the above-mentioned conventional problems, the air conditioner of the present invention performs a defrosting operation until a certain maximum defrosting operation time elapses during the defrosting operation or the temperature of the outdoor heat exchanger is a predetermined value. It is an air conditioner that performs defrosting operation until the temperature becomes equal to or higher and suppresses the total operating current value when a demand signal is received, and when the demand signal is received during defrosting operation, Since the defrosting operation time can be extended by extending the time, the frost that has formed frost can be melted more effectively.
本発明は、デマンド制御中の快適性向上を図る空気調和機を提供することができる。 The present invention can provide an air conditioner that improves comfort during demand control.
第１の発明の空気調和機は、除霜運転時は一定の除霜運転最大時間が経過するまで除霜運転を行うか、室外熱交換器の温度が所定の温度以上となるまで除霜運転を行い、デマンド信号を受信したときに運転電流値の合計を抑制する空気調和機であって、除霜運転時にデマンド信号を受信した場合は、除霜運転最大時間を延長することにより、除霜運転時間を延ばすことができるため、着霜した霜をより効果的に溶かすことができる。 The air conditioner according to the first aspect of the invention performs the defrosting operation until a constant maximum defrosting operation time elapses during the defrosting operation or until the temperature of the outdoor heat exchanger becomes equal to or higher than a predetermined temperature. If the demand signal is received during the defrosting operation, the defrosting operation is extended by extending the maximum defrosting operation time. Since the operation time can be extended, the frost that has formed frost can be melted more effectively.
第２の発明の空気調和機は、特に第１の発明において、デマンド信号によって規制される運転電流値によって、除霜運転最大時間を変更することにより、運転電流値の上限規制
の異なるデマンド信号を除霜運転時に受信した場合、除霜周波数がかなり下がっても、除霜運転時間がさらに長くなるため、室外熱交換器に着霜した霜を完全にとかすことができ、長時間暖房運転しても、除霜運転後は室内機からの吹出空気温度が下がらず、快適性の向上を図ることができる。
In the air conditioner of the second invention, particularly in the first invention, by changing the maximum defrosting operation time according to the operation current value regulated by the demand signal, the demand signal having a different upper limit regulation of the operation current value is generated. If received during defrosting operation, even if the defrosting frequency drops considerably, the defrosting operation time will be longer, so the frost that has formed on the outdoor heat exchanger can be completely thawed, However, after the defrosting operation, the temperature of the air blown from the indoor unit does not drop, and the comfort can be improved.
以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
（実施の形態１）
図１および図２は、本発明の第１の実施の形態における除霜運転の制御概略図、図３は、本発明の第１の実施の形態における空気調和機の冷凍サイクル図である。
(Embodiment 1)
1 and 2 are control schematic diagrams of the defrosting operation in the first embodiment of the present invention, and FIG. 3 is a refrigeration cycle diagram of the air conditioner in the first embodiment of the present invention.
図３に示すように、空気調和機本体１は、圧縮機２、冷媒の循環方向を切り換える四方弁３、室外熱交換器４、前記冷媒の流量を制御する膨張弁５、冷媒配管７および室内熱交換器６等で構成され、室内機１６と室外機１９に分かれている。 As shown in FIG. 3, the air conditioner body 1 includes a compressor 2, a four-way valve 3 that switches a refrigerant circulation direction, an outdoor heat exchanger 4, an expansion valve 5 that controls the flow rate of the refrigerant, a refrigerant pipe 7, and an indoor room. It consists of a heat exchanger 6 and the like, and is divided into an indoor unit 16 and an outdoor unit 19.
また、室外熱交換器４を通過する空気流を発生させる室外ファン１０、室内熱交換器６を通過する空気流を発生させる室内ファン１２を備える。 Moreover, the outdoor fan 10 which generates the air flow which passes the outdoor heat exchanger 4, and the indoor fan 12 which generates the air flow which passes the indoor heat exchanger 6 are provided.
また、圧縮機２の冷媒流出側に設けられる吐出温度検出手段９、室外熱交換器４の所定位置に設けられる室外熱交温度検出手段１１、室外熱交換器４の風上側の所定位置に設けられる室外吸込温度検出手段８、室内熱交換器６の所定位置に設けられる室内熱交温度検出手段１３、室内熱交換器６の風上側の所定位置に設けられる室内吸込温度検出手段１４を有する。なお、それぞれの温度検出手段は温度サーミスタで構成される。 Further, the discharge temperature detecting means 9 provided on the refrigerant outflow side of the compressor 2, the outdoor heat exchanger temperature detecting means 11 provided at a predetermined position of the outdoor heat exchanger 4, and provided at a predetermined position on the windward side of the outdoor heat exchanger 4. The outdoor suction temperature detection means 8 is provided, the indoor heat exchanger temperature detection means 13 provided at a predetermined position of the indoor heat exchanger 6, and the indoor suction temperature detection means 14 provided at a predetermined position on the windward side of the indoor heat exchanger 6. Each temperature detection means is constituted by a temperature thermistor.
また、リモコン１７の信号（デマンド制御信号）を受信する室内制御器１５、室内制御器１５と通信を行う室外制御器１８を有する。 Moreover, it has the indoor controller 15 which receives the signal (demand control signal) of the remote control 17, and the outdoor controller 18 which communicates with the indoor controller 15.
そして、暖房時外気温が低い場合、室外熱交換器４で凝縮した凝縮水は徐々に室外熱交換器４に着霜し始めるため四方弁３を切替え冷房運転し、室外熱交換器４に着霜した霜をとかす。このとき、除霜運転は、室外熱交温度検出手段１１の温度が所定の温度（例えば、１℃）以上を検出するか、最大除霜運転時間Ｔ（例えば、６０分）を経過するまで実施される。 When the outside air temperature during heating is low, the condensed water condensed in the outdoor heat exchanger 4 begins to form frost on the outdoor heat exchanger 4, so that the four-way valve 3 is switched for cooling operation, and the condensed water is attached to the outdoor heat exchanger 4. Thaw frost. At this time, the defrosting operation is performed until the temperature of the outdoor heat exchanger temperature detecting means 11 detects a predetermined temperature (for example, 1 ° C.) or higher or the maximum defrosting operation time T (for example, 60 minutes) elapses. Is done.
以上のように構成された空気調和機において、除霜運転時にデマンド信号を受信した場合は、通常の除霜運転最大時間ＴからＴ１（＞Ｔ）へと変更する。 In the air conditioner configured as described above, when a demand signal is received during the defrosting operation, the normal defrosting operation maximum time T is changed to T1 (> T).
それによって、運転電流値の上限規制（例えば、通常電流値Ｉの７５％）がかかり、除霜周波数が通常の運転時の周波数ＨからＨ１（＜Ｈ）に下がっても、除霜運転時間が長くなるため、室外熱交換器４に着霜した霜を完全にとかすことができ、長時間暖房運転しても、除霜運転後は室内機１６からの吹出空気温度が下がらず、快適性の向上を図ることができる。 As a result, the upper limit of the operating current value (for example, 75% of the normal current value I) is applied, and the defrosting operation time is reduced even when the defrosting frequency falls from the frequency H during normal operation to H1 (<H). Since it becomes longer, it is possible to completely remove the frost that has formed on the outdoor heat exchanger 4, and even after heating operation for a long time, the temperature of the air blown from the indoor unit 16 does not decrease after the defrosting operation. Improvements can be made.
また、図２に示すように、除霜運転時に運転電流値の上限規制の異なるデマンド信号を受信した場合、運転電流値の上限規制（例えば、通常電流値Ｉの５０％）がかかり、除霜運転最大時間を変更し、除霜運転最大時間の延長（Ｔ２＞Ｔ１）を行うことにより、除霜周波数がかなり下がってもＨ２（＜Ｈ１）、除霜運転時間がさらに長くなる。 Further, as shown in FIG. 2, when a demand signal having a different upper limit of the operating current value is received during the defrosting operation, the upper limit of the operating current value (for example, 50% of the normal current value I) is applied, and the defrosting is performed. By changing the operation maximum time and extending the maximum defrost operation time (T2> T1), even if the defrost frequency is considerably lowered, H2 (<H1), the defrost operation time is further increased.
このように通常電流値Ｉが制限されればされるほど、最大除霜運転時間Ｔを長くすることによって、霜を完全にとかすことができ、長時間暖房運転しても、除霜運転後は室内機
１６からの吹出空気温度が下がらず、快適性の向上を図ることができる。
Thus, the more the normal current value I is limited, the longer the maximum defrosting operation time T is, and the frost can be completely dissolved. The temperature of the air blown from the indoor unit 16 does not decrease, and the comfort can be improved.
以上のように本発明は、１台の室外機に１台の室内機が接続される空気調和機だけではなく、１台の室外機に複数台の室内機が接続されるマルチ型の空気調和機であっても適用することができる。 As described above, the present invention is not only an air conditioner in which one indoor unit is connected to one outdoor unit, but also a multi-type air conditioner in which a plurality of indoor units are connected to one outdoor unit. Even a machine can be applied.
１ 空気調和機本体
４ 室外熱交換器
1 Air conditioner body 4 Outdoor heat exchanger
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011283220A JP2013133977A (en) | 2011-12-26 | 2011-12-26 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011283220A JP2013133977A (en) | 2011-12-26 | 2011-12-26 | Air conditioner |
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| Publication Number | Publication Date |
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| JP2013133977A true JP2013133977A (en) | 2013-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2011283220A Pending JP2013133977A (en) | 2011-12-26 | 2011-12-26 | Air conditioner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344470A (en) * | 2013-08-08 | 2015-02-11 | 富士通将军股份有限公司 | Outdoor unit of air conditioner and air conditioner |
| CN104913452A (en) * | 2015-06-03 | 2015-09-16 | 广东美的制冷设备有限公司 | Air conditioner and defrosting control method for same |
| CN105091197A (en) * | 2014-05-12 | 2015-11-25 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device |
| CN109323373A (en) * | 2018-10-17 | 2019-02-12 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN109654678A (en) * | 2018-11-13 | 2019-04-19 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| JPWO2018185923A1 (en) * | 2017-04-07 | 2019-06-27 | 三菱電機株式会社 | Outdoor unit of air conditioner |
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| JP2009198020A (en) * | 2008-02-19 | 2009-09-03 | Okamura Corp | Defrost controlling device in freezing-refrigerating showcase |
| JP2009225629A (en) * | 2008-03-18 | 2009-10-01 | Panasonic Electric Works Co Ltd | Demand control system |
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2011
- 2011-12-26 JP JP2011283220A patent/JP2013133977A/en active Pending
Patent Citations (6)
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| JPH07218055A (en) * | 1994-02-01 | 1995-08-18 | Hitachi Ltd | Defrosting control method for air conditioner |
| JPH10122627A (en) * | 1996-08-27 | 1998-05-15 | Sanyo Electric Co Ltd | Controller of air conditioner |
| JP2007017045A (en) * | 2005-07-06 | 2007-01-25 | Matsushita Electric Ind Co Ltd | Refrigerator |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344470A (en) * | 2013-08-08 | 2015-02-11 | 富士通将军股份有限公司 | Outdoor unit of air conditioner and air conditioner |
| EP2840324A1 (en) * | 2013-08-08 | 2015-02-25 | Fujitsu General Limited | Outdoor unit of air conditioner and air conditioner |
| US9651294B2 (en) | 2013-08-08 | 2017-05-16 | Fujitsu General Limited | Outdoor unit of air conditioner and air conditioner |
| CN105091197A (en) * | 2014-05-12 | 2015-11-25 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device |
| CN105091197B (en) * | 2014-05-12 | 2017-10-27 | 珠海格力电器股份有限公司 | air conditioner defrosting control method and device |
| CN104913452A (en) * | 2015-06-03 | 2015-09-16 | 广东美的制冷设备有限公司 | Air conditioner and defrosting control method for same |
| JPWO2018185923A1 (en) * | 2017-04-07 | 2019-06-27 | 三菱電機株式会社 | Outdoor unit of air conditioner |
| EP3543617A4 (en) * | 2017-04-07 | 2019-12-04 | Mitsubishi Electric Corporation | Outdoor unit for air conditioner |
| CN109323373A (en) * | 2018-10-17 | 2019-02-12 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN109654678A (en) * | 2018-11-13 | 2019-04-19 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
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