WO2012032682A1 - Air conditioning apparatus - Google Patents
Air conditioning apparatus Download PDFInfo
- Publication number
- WO2012032682A1 WO2012032682A1 PCT/JP2011/001293 JP2011001293W WO2012032682A1 WO 2012032682 A1 WO2012032682 A1 WO 2012032682A1 JP 2011001293 W JP2011001293 W JP 2011001293W WO 2012032682 A1 WO2012032682 A1 WO 2012032682A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- defrosting
- heat exchanger
- indoor
- air
- indoor fan
- Prior art date
Links
- 238000004378 air conditioning Methods 0.000 title abstract 3
- 238000010257 thawing Methods 0.000 claims abstract description 75
- 238000010438 heat treatment Methods 0.000 claims abstract description 40
- 230000001276 controlling effect Effects 0.000 claims abstract description 9
- 238000007664 blowing Methods 0.000 claims abstract description 6
- 239000003507 refrigerant Substances 0.000 claims description 59
- 238000002844 melting Methods 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 3
- 239000002826 coolant Substances 0.000 abstract description 2
- 239000007791 liquid phase Substances 0.000 description 6
- 239000012071 phase Substances 0.000 description 5
- 230000000875 corresponding Effects 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 238000003287 bathing Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
- F24F2120/12—Position of occupants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/029—Control issues
- F25B2313/0293—Control issues related to the indoor fan, e.g. controlling speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
Abstract
The present invention provides an air conditioning apparatus which is provided with an outdoor heat exchanger (14), an indoor heat exchanger (16), a four-way valve (8) and a compressor (6), and frost which attaches to the outdoor heat exchanger (14) is melted and removed by means of coolant which is heated by the compressor (6). The air conditioning apparatus comprises: an indoor fan (34) for blowing air heated by the indoor heat exchanger (16) into a room; and a defrosting means for removing frost by controlling the four-way valve (8) in such a way that a heating cycle can be carried out while blowing air into the room by controlling the indoor fan (34), in the event that it is deemed necessary to remove the frost.
Description
本発明は、室内熱交換器、室外熱交換器、四方弁、および圧縮機を備え、室外熱交換器に付着した霜を融解することができる空気調和機に関する。
The present invention relates to an air conditioner that includes an indoor heat exchanger, an outdoor heat exchanger, a four-way valve, and a compressor and that can melt frost attached to the outdoor heat exchanger.
従来より、室外熱交換器に着霜した場合、暖房サイクルによって除霜を行う空気調和機が知られている（例えば特許文献１参照）。暖房サイクルによって除霜を実行する場合、圧縮機によって圧縮加熱された冷媒は分流され、一方が室内熱交換器を介して室外熱交換器に送られ、他方が室内熱交換器を介さずに直接室外熱交換器に送られる。これにより、室外熱交換器に付着する霜が融解される。
Conventionally, an air conditioner that performs defrosting by a heating cycle when the outdoor heat exchanger is frosted is known (see, for example, Patent Document 1). When performing defrosting by a heating cycle, the refrigerant compressed and heated by the compressor is diverted, one is sent to the outdoor heat exchanger through the indoor heat exchanger, and the other is directly passed through the indoor heat exchanger. It is sent to the outdoor heat exchanger. Thereby, the frost adhering to an outdoor heat exchanger is thawed.
上述のような暖房サイクルによる除霜を実行する場合、当然ながら空気調和機の暖房能力は低下することになる。これに対して次の対処が考えられる。
When performing the defrosting by the heating cycle as described above, the heating capacity of the air conditioner naturally decreases. The following measures can be considered for this.
例えば、暖房能力を一時的に停止し、例えば室内熱交換器まわりの空気を室内に送風する室内ファンを停止して該室内熱交換器から室内に供給される熱量を減らし、室外熱交換器に供給する熱量を大きくすることで、除霜を最短時間で終了させることが考えられる。これにより、除霜を実行する前の暖房能力に素早く復帰させることができる。
For example, the heating capacity is temporarily stopped, for example, the indoor fan that blows the air around the indoor heat exchanger into the room is stopped to reduce the amount of heat supplied from the indoor heat exchanger to the indoor heat exchanger. It can be considered that defrosting is completed in the shortest time by increasing the amount of heat to be supplied. Thereby, it is possible to quickly return to the heating capacity before executing the defrosting.
しかしながら、実際には、室外熱交換器の除霜に必要な時間は室外の温度や圧縮機の出力など種々の条件によって異なるため、上述のように除霜が最短時間で終了したことをユーザは実感し難い。言い換えると、除霜の最短終了時間が異なるため、ユーザは除霜が最短時間で実行されたことがわからない。さらに、除霜が最短時間で終了したことによってユーザが満足感を得ることはあまりなく、それよりは、室内ファンが停止したことによって暖房が停止したと不快に感じることがある。
In practice, however, the time required for defrosting the outdoor heat exchanger varies depending on various conditions such as the outdoor temperature and the output of the compressor. It is difficult to realize. In other words, since the shortest end time of defrosting is different, the user does not know that the defrosting has been executed in the shortest time. Furthermore, the user does not get much satisfaction because the defrosting has been completed in the shortest time, and moreover, the user may feel uncomfortable that the heating has stopped due to the indoor fan being stopped.
本発明は、従来技術の有するこのような問題点に鑑みてなされたものであり、室外熱交換器の除霜を、室内のユーザに不快感を与えることなく実行することを課題とする。
This invention is made | formed in view of such a problem which a prior art has, and makes it a subject to perform defrosting of an outdoor heat exchanger, without giving a user a discomfort.
上記目的を達成するために、本発明の第１の態様によれば、
室外熱交換器、室内熱交換器、四方弁、および圧縮機を備え、圧縮機に暖められた冷媒によって室外熱交換器に付着する霜を溶解して除霜する空気調和機において、
室内熱交換器が暖めた空気を室内に送風する室内ファンと、
除霜が必要と判断された場合に、室内ファンを制御することによって室内に送風しつつ、暖房サイクルを実行できるように四方弁を制御することによって除霜を実行する除霜手段とを有する、空気調和機が提供される。 In order to achieve the above object, according to the first aspect of the present invention,
In an air conditioner that includes an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, and a compressor, and melts and defrosts frost adhering to the outdoor heat exchanger by a refrigerant heated by the compressor.
An indoor fan for blowing the air heated by the indoor heat exchanger into the room,
Defrosting means for performing defrosting by controlling a four-way valve so that a heating cycle can be performed while blowing air indoors by controlling an indoor fan when it is determined that defrosting is necessary, An air conditioner is provided.
室外熱交換器、室内熱交換器、四方弁、および圧縮機を備え、圧縮機に暖められた冷媒によって室外熱交換器に付着する霜を溶解して除霜する空気調和機において、
室内熱交換器が暖めた空気を室内に送風する室内ファンと、
除霜が必要と判断された場合に、室内ファンを制御することによって室内に送風しつつ、暖房サイクルを実行できるように四方弁を制御することによって除霜を実行する除霜手段とを有する、空気調和機が提供される。 In order to achieve the above object, according to the first aspect of the present invention,
In an air conditioner that includes an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, and a compressor, and melts and defrosts frost adhering to the outdoor heat exchanger by a refrigerant heated by the compressor.
An indoor fan for blowing the air heated by the indoor heat exchanger into the room,
Defrosting means for performing defrosting by controlling a four-way valve so that a heating cycle can be performed while blowing air indoors by controlling an indoor fan when it is determined that defrosting is necessary, An air conditioner is provided.
本発明によれば、室外熱交換器の除霜の実行中、室内ファンが室内に送風する。これにより、室内ファンが停止したことによって暖房が停止したとユーザに不快に感じさせることなく、室外熱交換器の除霜を実行することができる。
According to the present invention, the indoor fan blows into the room during the defrosting of the outdoor heat exchanger. Thereby, defrosting of the outdoor heat exchanger can be executed without causing the user to feel uncomfortable that the heating has stopped due to the stop of the indoor fan.
本発明のこれらの態様と特徴は、添付された図面についての好ましい実施形態に関連した次の記述から明らかになる。
本発明の実施の形態に係る空気調和機の構成を示す図
図１の空気調和機の除霜運転時の動作及び冷媒の流れを示す模式図
除霜運転時の制御の流れを示すフローチャート図
These aspects and features of the invention will become apparent from the following description, taken in conjunction with the preferred embodiments with reference to the accompanying drawings, in which:
The figure which shows the structure of the air conditioner which concerns on embodiment of this invention. The schematic diagram which shows the operation | movement at the time of the defrost operation of the air conditioner of FIG. 1, and the flow of a refrigerant | coolant. The flowchart figure which shows the flow of control at the time of defrost operation
第１の発明は、室外熱交換器、室内熱交換器、四方弁、および圧縮機を備え、圧縮機に暖められた冷媒によって室外熱交換器に付着する霜を溶解して除霜する空気調和機において、室内熱交換器が暖めた空気を室内に送風する室内ファンと、除霜が必要と判断された場合に、室内ファンを制御することによって室内に送風しつつ、暖房サイクルを実行できるように四方弁を制御することによって除霜を実行する除霜手段とを有する。
1st invention is equipped with an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, and a compressor, and is an air conditioner that dissolves and defrosts frost adhering to the outdoor heat exchanger by a refrigerant warmed by the compressor. In the machine, when it is determined that defrosting is necessary, and the indoor fan that blows the air warmed by the indoor heat exchanger into the room, the heating cycle can be executed while the room fan is ventilated by controlling the indoor fan And a defrosting means for performing defrosting by controlling the four-way valve.
この構成により、室外熱交換器の除霜の実行中、室内ファンが室内に送風する。これにより、室内ファンが停止したことによって暖房が停止したとユーザに不快に感じさせることなく、室外熱交換器の除霜を実行することができる。
This configuration allows the indoor fan to blow into the room during the defrosting of the outdoor heat exchanger. Thereby, defrosting of the outdoor heat exchanger can be executed without causing the user to feel uncomfortable that the heating has stopped due to the stop of the indoor fan.
第２の発明は、除霜手段が、霜を融解するために必要な熱量と、圧縮機の出力と、除霜時間とに基づいて暖房に振分け可能な熱量を算出し、算出した熱量に基づいて室内ファンの回転数を制御するので、除霜を優先して室内ファンの回転数を制御することができる。
2nd invention calculates the calorie | heat amount which can be distributed to heating based on the calorie | heat amount required in order that a defrost means melt | dissolves frost, the output of a compressor, and the defrost time, and based on the calorie | heat amount calculated Since the rotational speed of the indoor fan is controlled, the rotational speed of the indoor fan can be controlled with priority given to defrosting.
第３の発明は、室内ファンによって送風された空気を方向付けするルーバーを空気調和機がさらに有し、除霜が必要と判断された場合に、ルーバーが室内ファンから送風された空気を室内の上方に向かって方向付けする。これにより、ユーザに温度が低い空気が直接送風されることがなく、ユーザが不快に感じることが抑制される。
According to a third aspect of the present invention, the air conditioner further includes a louver for directing air blown by the indoor fan, and when it is determined that defrosting is necessary, the louver sends the air blown from the indoor fan to the indoor Orient upwards. Thereby, air with low temperature is not blown directly to a user, and it is suppressed that a user feels unpleasant.
第４の発明は、人が存在する室内位置を検出する人位置検出手段を空気調和機がさらに有し、除霜が必要と判断された場合に、ルーバーが室内ファンから送風された空気を、人位置検出手段が検出する人が存在する室内位置以外に方向付けする。これにより、ユーザに温度が低い空気が直接送風されることがなく、ユーザが不快に感じることが抑制される。
In the fourth invention, the air conditioner further has a human position detecting means for detecting the indoor position where a person is present, and when it is determined that defrosting is necessary, the louver blows the air blown from the indoor fan, The person position detecting means directs the direction other than the room position where the person detected is present. Thereby, air with low temperature is not blown directly to a user, and it is suppressed that a user feels unpleasant.
第５の発明は、室外の温度を検出する室外温度検出手段を空気調和機がさらに有し、除霜手段が、室外温度検出手段が検出する室外温度に基づいて室内ファンの回転数を制御する。これにより、室外温度が低い場合、すなわち除霜に必要な熱量が多い場合、より多くの熱量が室外熱交換器に供給される。
According to a fifth aspect of the present invention, the air conditioner further includes an outdoor temperature detecting means for detecting the outdoor temperature, and the defrosting means controls the rotational speed of the indoor fan based on the outdoor temperature detected by the outdoor temperature detecting means. . Thereby, when the outdoor temperature is low, that is, when the amount of heat necessary for defrosting is large, a larger amount of heat is supplied to the outdoor heat exchanger.
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、以下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 following embodiments.
図１は、本発明の実施の形態に係る空気調和機の構成を示しており、空気調和機は、冷媒配管で互いに接続された室外機２と室内機４とで構成されている。
FIG. 1 shows a configuration of an air conditioner according to an embodiment of the present invention, and the air conditioner includes an outdoor unit 2 and an indoor unit 4 that are connected to each other through a refrigerant pipe.
図１に示されるように、室外機２の内部には、圧縮機６と四方弁８とストレーナ１０と膨張弁１２と室外熱交換器１４とが設けられ、室内機４の内部には、室内熱交換器１６が設けられ、これらは冷媒配管を介して互いに接続されることで冷凍サイクルを構成している。
As shown in FIG. 1, a compressor 6, a four-way valve 8, a strainer 10, an expansion valve 12, and an outdoor heat exchanger 14 are provided inside the outdoor unit 2. A heat exchanger 16 is provided, and these are connected to each other via a refrigerant pipe to constitute a refrigeration cycle.
さらに詳述すると、圧縮機６と室内熱交換器１６は、四方弁８が設けられた冷媒配管１８を介して接続され、室内熱交換器１６と膨張弁１２は、ストレーナ１０が設けられた冷媒配管２０を介して接続されている。また、膨張弁１２と室外熱交換器１４は冷媒配管２２を介して接続され、室外熱交換器１４と圧縮機６は冷媒配管２４を介して接続されている。
More specifically, the compressor 6 and the indoor heat exchanger 16 are connected via a refrigerant pipe 18 provided with the four-way valve 8, and the indoor heat exchanger 16 and the expansion valve 12 are refrigerant provided with the strainer 10. It is connected via a pipe 20. The expansion valve 12 and the outdoor heat exchanger 14 are connected via a refrigerant pipe 22, and the outdoor heat exchanger 14 and the compressor 6 are connected via a refrigerant pipe 24.
冷媒配管２４の中間部には四方弁８が配置されており、圧縮機６の冷媒吸入側における冷媒配管２４には、液相冷媒と気相冷媒を分離するためのアキュームレータ２６が設けられている。また、圧縮機６と冷媒配管２２は、冷媒配管２８を介して接続されており、冷媒配管２８には電磁弁３０が設けられている。さらに、圧縮機６から出力されて電磁弁３０を通過した冷媒の一部を、四方弁８とアキュームレータ２６との間の冷媒配管２４に送るための冷媒配管３２が設けられている。
A four-way valve 8 is disposed in the middle of the refrigerant pipe 24, and an accumulator 26 for separating the liquid-phase refrigerant and the gas-phase refrigerant is provided in the refrigerant pipe 24 on the refrigerant suction side of the compressor 6. . The compressor 6 and the refrigerant pipe 22 are connected via a refrigerant pipe 28, and an electromagnetic valve 30 is provided in the refrigerant pipe 28. Further, a refrigerant pipe 32 is provided for sending a part of the refrigerant output from the compressor 6 and passing through the electromagnetic valve 30 to the refrigerant pipe 24 between the four-way valve 8 and the accumulator 26.
室内機４の内部には、室内熱交換器１６に加えて、送風ファン３４とルーバー３６とが設けられている。室内熱交換器１６は、送風ファン３４により室内機４の内部に吸込まれた室内空気と、室内熱交換器１６の内部を流れる冷媒との熱交換を行い、送風ファン３４は、暖房時には熱交換により暖められた空気を室内に吹き出す一方、冷房時には熱交換により冷却された空気を室内に吹き出す。ルーバー３６はまた、上下羽根と左右羽根とを備え、上下羽根は、室内機４から吹き出される空気の方向を必要に応じて上下に変更し、左右羽根は、室内機４から吹き出される空気の方向を必要に応じて左右に変更する。
In addition to the indoor heat exchanger 16, a blower fan 34 and a louver 36 are provided inside the indoor unit 4. The indoor heat exchanger 16 exchanges heat between the indoor air sucked into the indoor unit 4 by the blower fan 34 and the refrigerant flowing inside the indoor heat exchanger 16, and the blower fan 34 exchanges heat during heating. While the air warmed by the air is blown into the room, air cooled by heat exchange is blown into the room during cooling. The louver 36 also includes upper and lower blades and left and right blades. The upper and lower blades change the direction of the air blown from the indoor unit 4 up and down as necessary, and the left and right blades are air blown from the indoor unit 4. Change the direction to left or right as needed.
さらに加えて、本実施の形態に係る空気調和機の室外機２には、室外熱交換器１４内の温度を検出する室外熱交換器温度センサ３８が設けられている。室外熱交換器１４内の温度は、室外熱交換器１４の着霜量に対応するため、室外熱交換器温度センサ３８が検出した温度に基づいて、室外熱交換器１４に付着する霜（着霜量）を検出することができる。室外熱交換器温度センサ３８は、検出した温度に対応する信号を、空気調和機の制御装置に出力する。
In addition, the outdoor unit 2 of the air conditioner according to the present embodiment is provided with an outdoor heat exchanger temperature sensor 38 that detects the temperature in the outdoor heat exchanger 14. Since the temperature in the outdoor heat exchanger 14 corresponds to the amount of frost formation in the outdoor heat exchanger 14, frost (deposition) adhering to the outdoor heat exchanger 14 is based on the temperature detected by the outdoor heat exchanger temperature sensor 38. Frost amount) can be detected. The outdoor heat exchanger temperature sensor 38 outputs a signal corresponding to the detected temperature to the control device of the air conditioner.
また、室内機４には、室内における人の位置（ユーザ）を検出する人感センサ４０が設けられている。人感センサ４０は、室内における人の位置を検出するセンサであって、例えば、赤外線センサ、超音波センサ、照度センサなどである。人感センサ４０は、室内における人の位置を検出すると、検出位置に対応する信号を空気調和機の制御装置（図示せず）に出力する。具体的には、人感センサ４０は、室内機４に対して人が存在する方向を検出する。
In addition, the indoor unit 4 is provided with a human sensor 40 that detects the position (user) of a person in the room. The human sensor 40 is a sensor that detects the position of a person in the room, and is, for example, an infrared sensor, an ultrasonic sensor, an illuminance sensor, or the like. When the human sensor 40 detects the position of a person in the room, the human sensor 40 outputs a signal corresponding to the detected position to a control device (not shown) of the air conditioner. Specifically, the human sensor 40 detects the direction in which a person is present with respect to the indoor unit 4.
空気調和機の制御装置は、上述した室外熱交換器温度センサ３８および人感センサ４０から出力された信号を受け取り、その受け取った信号に基づいて、圧縮機６、四方弁８、膨張弁１２、電磁弁３０、送風ファン３４、ルーバー３６などを制御し、種々の運転を実行するように構成されている。
The control device for the air conditioner receives signals output from the outdoor heat exchanger temperature sensor 38 and the human sensor 40 described above, and based on the received signals, the compressor 6, the four-way valve 8, the expansion valve 12, The electromagnetic valve 30, the blower fan 34, the louver 36, and the like are controlled to perform various operations.
次に、本発明に係る除霜運転について説明する。
Next, the defrosting operation according to the present invention will be described.
除霜運転は室外熱交換器１４に付着する霜を融解するための運転であって、本発明に係る空気調和機の制御装置は、暖房サイクルによってこの除霜運転を実行する。言い換えると、制御装置が除霜手段として機能する。
The defrosting operation is an operation for melting frost adhering to the outdoor heat exchanger 14, and the control device for the air conditioner according to the present invention performs this defrosting operation by a heating cycle. In other words, the control device functions as a defrosting unit.
また、本明細書で言う「暖房サイクル」は、圧縮機６から四方弁８を介して室内熱交換器１６に冷媒が移動する、すなわち暖房するときのサイクルである。
In addition, the “heating cycle” referred to in the present specification is a cycle when the refrigerant moves from the compressor 6 to the indoor heat exchanger 16 via the four-way valve 8, that is, when heating is performed.
まず、除霜運転について図２を参照しながら説明する。図中、実線矢印は暖房に関する冷媒の流れを示しており、破線矢印は除霜に関する冷媒の流れを示している。なお、合わせて、空気調和機の各構成要素の機能についても説明する。
First, the defrosting operation will be described with reference to FIG. In the figure, the solid line arrows indicate the flow of the refrigerant related to heating, and the broken line arrows indicate the flow of the refrigerant related to defrosting. In addition, the function of each component of the air conditioner will also be described.
室外熱交換器１４に着霜し、着霜した霜が成長すると（所定の着霜量になると）、室外熱交換器１４の通風抵抗が増加して風量が減少し、室外熱交換器１４内の蒸発が所定の温度（除霜が必要な温度、以下「除霜必要温度」と称する）まで低下する。この除霜必要温度を室外熱交換器温度センサ３８が検出すると除霜運転が開始される。
When frost is formed on the outdoor heat exchanger 14 and the formed frost grows (when a predetermined amount of frost is formed), the ventilation resistance of the outdoor heat exchanger 14 increases and the air volume decreases, and the inside of the outdoor heat exchanger 14 Is reduced to a predetermined temperature (temperature that requires defrosting, hereinafter referred to as “defrosting required temperature”). When the outdoor heat exchanger temperature sensor 38 detects this defrosting required temperature, the defrosting operation is started.
除霜運転が開始されると、空気調和機の制御装置により、電磁弁３０が開制御されるとともに、四方弁８が暖房サイクル側に制御される。これにより、圧縮機６の吐出口から出力された気相冷媒の一部が冷媒配管１８に流れ、残りが冷媒配管２８に流れる。
When the defrosting operation is started, the electromagnetic valve 30 is controlled to open by the air conditioner control device, and the four-way valve 8 is controlled to the heating cycle side. Thereby, a part of the gas-phase refrigerant output from the discharge port of the compressor 6 flows into the refrigerant pipe 18 and the rest flows into the refrigerant pipe 28.
なお、参考のために、除霜を行わない暖房サイクルの場合、すなわち通常の暖房運転の場合は、電磁弁３０は閉制御される。
For reference, in a heating cycle in which defrosting is not performed, that is, in a normal heating operation, the solenoid valve 30 is controlled to be closed.
圧縮機６から冷媒配管１８に入る気相冷媒は、図２に示すように四方弁８を通過して室内熱交換器１６に到達し、そこで室内空気と室内熱交換器１６を介して熱交換する。熱交換によって熱を奪われて凝縮した液相の冷媒は、冷媒配管２０に入り、膨張弁１２への異物進入を防止するストレーナ１０を通って、膨張弁１２に至る。膨張弁１２によって減圧された冷媒は、冷媒配管２２を通って室外熱交換器１４に入る。
As shown in FIG. 2, the gas-phase refrigerant entering the refrigerant pipe 18 from the compressor 6 passes through the four-way valve 8 and reaches the indoor heat exchanger 16, where it exchanges heat with indoor air via the indoor heat exchanger 16. To do. The liquid-phase refrigerant that has been deprived of heat by heat exchange and condensed enters the refrigerant pipe 20 and reaches the expansion valve 12 through the strainer 10 that prevents foreign matter from entering the expansion valve 12. The refrigerant decompressed by the expansion valve 12 enters the outdoor heat exchanger 14 through the refrigerant pipe 22.
これに対して、圧縮機６の吐出口から出力されて冷媒配管２８に入る気相冷媒は、冷媒配管２８と電磁弁３０を通り、一部が室外熱交換器１４に向かい、残りが冷媒配管３２に入る。室外熱交換器１４に向かった冷媒は、冷媒配管２２を流れる冷媒と合流して室外熱交換器１４に入り、外気と熱交換する。室外熱交換器１４で外気と熱交換した液相化した冷媒は、冷媒配管２４と四方弁８とアキュームレータ２６を通って圧縮機６の吸入口に入る。
On the other hand, the gas-phase refrigerant that is output from the discharge port of the compressor 6 and enters the refrigerant pipe 28 passes through the refrigerant pipe 28 and the electromagnetic valve 30, partly toward the outdoor heat exchanger 14, and the rest as refrigerant pipe. Enter 32. The refrigerant heading for the outdoor heat exchanger 14 joins the refrigerant flowing through the refrigerant pipe 22 and enters the outdoor heat exchanger 14 to exchange heat with the outside air. The liquid phase refrigerant that has exchanged heat with the outside air in the outdoor heat exchanger 14 enters the suction port of the compressor 6 through the refrigerant pipe 24, the four-way valve 8, and the accumulator 26.
一方、冷媒配管３２に入った冷媒は、冷媒配管２４を流れる冷媒と合流し、アキュームレータ２６を通って圧縮機６の吸入口に入る。
On the other hand, the refrigerant that has entered the refrigerant pipe 32 merges with the refrigerant flowing through the refrigerant pipe 24, passes through the accumulator 26, and enters the suction port of the compressor 6.
なお、アキュームレータ２６に入る直前において、室外熱交換器１４からの液相冷媒と冷媒配管３２からの高温の気相冷媒とが合流することにより、液相冷媒の蒸発が促され、アキュームレータ２６を通過して液相冷媒が圧縮機６に戻ることがなくなり、圧縮機６の信頼性の向上を図ることができる。
Just before entering the accumulator 26, the liquid-phase refrigerant from the outdoor heat exchanger 14 and the high-temperature gas-phase refrigerant from the refrigerant pipe 32 join together to promote evaporation of the liquid-phase refrigerant and pass through the accumulator 26. Thus, the liquid phase refrigerant does not return to the compressor 6, and the reliability of the compressor 6 can be improved.
このような除霜運転により、暖房能力を確保しつつ、当該運転開始時に霜の付着により氷点下であった室外熱交換器１４の温度は、霜が融解することによって上昇する。なお、除霜運転は、室外熱交換器温度センサ３８が、除霜必要温度より高くて霜が存在し得ない温度を検出すると終了する。
Such a defrosting operation increases the temperature of the outdoor heat exchanger 14 that has been below the freezing point due to the attachment of frost at the start of the operation as the frost melts while securing the heating capacity. The defrosting operation is terminated when the outdoor heat exchanger temperature sensor 38 detects a temperature that is higher than the defrosting required temperature and cannot contain frost.
このような除霜運転を実行するとき、空気調和機の制御装置は、室内ファン３４と、ルーバー３６とを制御するように構成されている。
When performing such a defrosting operation, the control device for the air conditioner is configured to control the indoor fan 34 and the louver 36.
具体的には、空気調和機の制御装置は、図３に示すフローチャートに従い、除霜運転を実行する。
Specifically, the control device of the air conditioner performs a defrosting operation according to the flowchart shown in FIG.
まず、ステップＳ１０において、制御装置は、室外熱交換器１４の除霜が必要か否かを判定する。具体的には、上述したように、室外熱交換器温度センサ３８が検出した温度が除霜必要温度より低い場合、除霜が必要であると判定する。除霜が必要である場合は、ステップＳ２０に進む。そうでない場合は、リターンに進み、スタートに戻る。
First, in step S10, the control device determines whether or not defrosting of the outdoor heat exchanger 14 is necessary. Specifically, as described above, when the temperature detected by the outdoor heat exchanger temperature sensor 38 is lower than the defrosting required temperature, it is determined that defrosting is necessary. When defrosting is required, it progresses to Step S20. If not, proceed to return and return to start.
次に、ステップＳ２０において、制御装置は、圧縮機６が発生する熱量（圧縮発熱量）Ｑｃを算出する。
Next, in step S20, the control device calculates a heat amount (compression heat generation amount) Qc generated by the compressor 6.
例えば、除霜運転の継続時間が９分であって、除霜運転開始時の圧縮機６の消費電力が１３００Ｗである場合、圧縮機発生熱量Ｑｃは、１３００Ｗ×９分×６０／１０００＝７０２ｋＪである。
For example, when the duration of the defrosting operation is 9 minutes and the power consumption of the compressor 6 at the start of the defrosting operation is 1300 W, the amount of heat generated by the compressor Qc is 1300 W × 9 minutes × 60/1000 = 702 kJ It is.
なお、除霜運転の継続時間は、室外熱交換器内の温度、ユーザが設定した圧縮機の出力（例えば、ユーザが設定する風量に対応する出力）、外気温度（この場合、外気温度センサが設けられる）、除霜運転開始時の室内熱交換器の温度（すなわち、除霜運転開始時おいて室内交換器が持つ熱量）など、種々の条件によって決定され、これが可能に制御装置は構成されている。
The duration of the defrosting operation includes the temperature in the outdoor heat exchanger, the output of the compressor set by the user (for example, the output corresponding to the air volume set by the user), the outside air temperature (in this case, the outside air temperature sensor Provided) and the temperature of the indoor heat exchanger at the start of the defrosting operation (that is, the amount of heat that the indoor exchanger has at the start of the defrosting operation). ing.
圧縮機発生熱量Ｑｃの算出が終了すると、ステップＳ３０において、制御装置は、除霜に必要な熱量（除霜必要熱量）Ｑｍを算出する。
When the calculation of the amount of heat generated by the compressor Qc is completed, in step S30, the control device calculates the amount of heat necessary for defrosting (heat amount necessary for defrosting) Qm.
例えば、室外熱交換器１４の大きさや構造に基づいて、除霜が必要となるときの着霜量が実験的または理論的に予め求められている。例えば、除霜が必要となるときの着霜量を９００ｇとする。
For example, based on the size and structure of the outdoor heat exchanger 14, the amount of frost formation when defrosting is required is experimentally or theoretically obtained in advance. For example, the amount of frost formation when defrosting is required is 900 g.
９００ｇの霜が融解するために必要な熱量Ｑｍ１は、９００ｇ×０．３３３５ｋＪ／ｇ＝３００．１５ｋＪである。
The amount of heat Qm1 necessary for melting 900 g of frost is 900 g × 0.3335 kJ / g = 300.15 kJ.
９００ｇの霜が融解開始の０℃まで昇温するために必要な熱量Ｑｍ２は、除霜運転開始時における霜平均温度が－３℃である場合、９００ｇ×０．００２０８５ｋＪ／ｇＫ×（０－（－３））Ｋ＝５．６３ｋＪである。なお、霜平均温度は、予め室外熱交換器１４内の温度との対応関係を求めていれば、室外熱交換器温度センサ３８が検出した温度から求めることができる。
The amount of heat Qm2 required for 900 g of frost to rise to 0 ° C. at the start of melting is 900 g × 0.002085 kJ / gK × (0− (0) when the average frost temperature at the start of the defrost operation is −3 ° C. -3)) K = 5.63 kJ. In addition, the frost average temperature can be calculated | required from the temperature which the outdoor heat exchanger temperature sensor 38 detected, if the correspondence with the temperature in the outdoor heat exchanger 14 is calculated | required previously.
これに対し、室外熱交換器１４内の温度が、霜が存在し得ない温度、例えば８度まで昇温するために必要な熱量Ｑｍ３は、例えば、除霜運転開始時の温度が－６℃であって、熱容量が４．１８３ｋＪ／Ｋとした場合、４．１８３ｋＪ／Ｋ×（８－（－６））Ｋ＝５８．５６ｋＪである。
In contrast, the amount of heat Qm3 required to raise the temperature in the outdoor heat exchanger 14 to a temperature at which frost cannot exist, for example, up to 8 degrees, is, for example, a temperature at the start of the defrosting operation of −6 ° C. When the heat capacity is 4.183 kJ / K, 4.183 kJ / K × (8 − (− 6)) K = 58.56 kJ.
したがって、除霜必要熱量Ｑｍは、Ｑｍ１、Ｑｍ２、Ｑｍ３の和から与えられ、上述の例の場合、３００．１５ｋＪ＋５８．５６ｋＪ＝３６４．３４ｋＪである。
Therefore, the defrosting necessary heat quantity Qm is given from the sum of Qm1, Qm2, and Qm3, and in the above example, 300.15 kJ + 58.56 kJ = 364.34 kJ.
続いて、Ｓ４０において、制御装置は、暖房に振分け可能な熱量（暖房振分け可能熱量）Ｑｈを算出する。具体的には、暖房振分け可能熱量Ｑｈは、ステップＳ２０で算出した圧縮機発熱量ＱｃからステップＳ３０で算出した除霜必要熱量Ｑｍを減算した値である。上述の例の場合、暖房振分け可能熱量Ｑｈは、７０２ｋＪ－３６４．３４ｋＪ＝３３７．６６ｋＪである。
Subsequently, in S40, the control device calculates an amount of heat Qh that can be distributed to heating (amount of heat that can be distributed to heating). Specifically, the heat distribution available heat amount Qh is a value obtained by subtracting the defrosting necessary heat amount Qm calculated in step S30 from the compressor heat generation amount Qc calculated in step S20. In the case of the above-described example, the amount of heat Qh that can be allocated to heating is 702 kJ-364.34 kJ = 337.66 kJ.
Ｓ５０において、制御装置は、Ｓ４０で算出した暖房振分け可能熱量Ｑｈに基づいて、室内ファン３４の回転数Ｎを決定する。
In S50, the control device determines the rotation speed N of the indoor fan 34 based on the amount Qh of heat that can be distributed in S40.
具体的には、制御装置は、除霜運転時において、暖房振分け可能熱量Ｑｈが小さくなっても、室内ファン３４が、所定の最低回転数以上で回転するように制御する。すなわち、室内ファン３４を完全には止めない（回転数Ｎをゼロにしない）。
Specifically, during the defrosting operation, the control device controls the indoor fan 34 to rotate at a predetermined minimum number of revolutions or more even if the amount of heat Qh that can be distributed to the heating is reduced. That is, the indoor fan 34 is not completely stopped (the rotational speed N is not set to zero).
これに関して説明すると、室内のユーザは、現実には、室内機４から室内に供給される現実の熱量（温風）を直接浴びて暖房感を得るだけでなく、室内機４からの温風を直接浴びなくても、送風音（風きり音）や室内ファン３４の回転音によっても暖房感を得ることがある。したがって、室内ファン３４の回転数Ｎがゼロになると、暖房が停止したと不快に感じることがありえる。
In this regard, indoor users will not only get a feeling of heating by directly receiving the actual amount of heat (warm air) supplied from the indoor unit 4 into the room, but will also receive warm air from the indoor unit 4. Even if it is not directly bathed, a feeling of heating may be obtained by a blowing sound (wind noise) or a rotating sound of the indoor fan 34. Therefore, when the rotation speed N of the indoor fan 34 becomes zero, it may be uncomfortable when the heating is stopped.
このユーザの暖房感を考慮し、制御装置は、除霜運転時において、暖房振分け可能熱量Ｑｈが小さくなっても、室内ファン３４が、所定の最低回転数、すなわちユーザが暖房感を得ることができる回転数で回転するように制御する。なお、暖房振分け可能熱量Ｑｈが大きいほど、制御装置は、例えば、設定の回転数（例えば、ユーザが指定する風量に対応する回転数）を超えない高い回転数で室内ファン３４を制御する。このような制御を可能とするために、暖房振分け可能熱量Ｑｈと室内ファン３４の回転数Ｎとの関係は、予め実験的にまたは統計的に求められている。
In consideration of the user's feeling of heating, the control device may allow the indoor fan 34 to obtain a predetermined minimum number of revolutions, that is, the user feels a feeling of heating even when the amount of heat Qh that can be distributed to the heating is reduced during the defrosting operation. Control to rotate at a possible rotation speed. Note that the control device controls the indoor fan 34 at a higher rotational speed that does not exceed a set rotational speed (for example, the rotational speed corresponding to the air volume specified by the user), for example, as the heating-distributable heat quantity Qh is larger. In order to enable such control, the relationship between the amount of heat Qh that can be allocated to heating and the rotational speed N of the indoor fan 34 is experimentally or statistically determined in advance.
ステップＳ６０において、制御装置は、人感センサ４０からの信号に基づいて、室内におけるユーザの位置を特定する。
In step S60, the control device specifies the position of the user in the room based on the signal from the human sensor 40.
ステップＳ７０において、制御装置は、ステップＳ６０で特定したユーザの位置を外した方向に送風するようにルーバー３６を制御する。すなわち、室内機４は、ユーザを避けて室内に送風する。
In step S70, the control device controls the louver 36 so as to blow in the direction away from the position of the user specified in step S60. That is, the indoor unit 4 blows into the room avoiding the user.
これは、除霜運転時は、通常の暖房運転時に比べて温度が低い空気が室内機４から送風されるため、その温度が低い空気を直接浴びたユーザが暖房感を失い、そのユーザが不快に感じる可能性があるためである。
This is because during the defrosting operation, air having a lower temperature than that during the normal heating operation is blown from the indoor unit 4, so that the user who directly bathed in the air having the lower temperature loses the feeling of heating and the user is uncomfortable. Because there is a possibility that you may feel.
本実施の形態によれば、室外熱交換器１４の除霜の実行中、室内ファン３４が室内に送風する。これにより、室内ファン３４が停止したことによって暖房が停止したとユーザに不快に感じさせることなく、室外熱交換器１４の除霜を実行することができる。
According to the present embodiment, the indoor fan 34 blows into the room during the defrosting of the outdoor heat exchanger 14. Thereby, the defrosting of the outdoor heat exchanger 14 can be performed without causing the user to feel uncomfortable that the heating has stopped due to the stop of the indoor fan 34.
また、室外熱交換器１４に付着した霜を融解するために必要な熱量と、圧縮機６の出力と、除霜時間とに基づいて暖房に振分け可能な熱量を算出し、算出した熱量に基づいて室内ファン３４の回転数を制御するため、除霜を優先して室内ファン３４の回転数を制御することができる。
Moreover, the calorie | heat amount which can be distributed to heating based on the calorie | heat amount required in order to melt | dissolve the frost adhering to the outdoor heat exchanger 14, the output of the compressor 6, and a defrost time is calculated, and based on the calorie | heat amount calculated Since the rotational speed of the indoor fan 34 is controlled, the rotational speed of the indoor fan 34 can be controlled with priority given to defrosting.
さらに、ルーバー３６と人感センサ４０とにより、除霜運転時において、ユーザを避けて室内ファン３４が空気を送風することができる。これにより、温度が低い空気を直接浴びることによってユーザが暖房感を失って不快に感じることが抑制される。
Furthermore, the louver 36 and the human sensor 40 allow the indoor fan 34 to blow air while avoiding the user during the defrosting operation. Thereby, it is suppressed that a user loses a feeling of heating and feels uncomfortable by directly bathing air with low temperature.
以上、上述の実施の形態を挙げて本発明を説明したが、本発明は上述の実施の形態に限定されない。
As mentioned above, although the present invention has been described with reference to the above-described embodiment, the present invention is not limited to the above-described embodiment.
例えば、上述の実施形態は、室内における人（ユーザ）の位置を検出する人感センサ４０を有する空気調和機であるが、人感センサを有していない空気調和機の場合、ルーバーが室内ファンから送風された空気を室内の上方（例えば天井）に向かって方向付けする。これにより、除霜運転時において、ユーザに温度が低い空気が直接送風されることがなく、人感センサを有する場合と同様、ユーザが不快に感じることが抑制される。
For example, the above-described embodiment is an air conditioner having a human sensor 40 that detects the position of a person (user) in a room. However, in the case of an air conditioner that does not have a human sensor, the louver is an indoor fan. The air blown from is directed upward (for example, the ceiling) in the room. Thereby, at the time of a defrost operation, air with low temperature is not blown directly to a user, and it is suppressed that a user feels unpleasant like the case where it has a human sensor.
また、例えば、室外の温度を検出する室外温度センサを設け、この室外温度センサが検出する室外温度に基づいて室内ファンの回転数を制御してもよい。
Also, for example, an outdoor temperature sensor that detects the outdoor temperature may be provided, and the rotational speed of the indoor fan may be controlled based on the outdoor temperature detected by the outdoor temperature sensor.
室外温度が低い場合、室外温度が高い場合に比べて、除霜に必要な熱量が多くなる。したがって、室外温度が低い場合、室外温度が高い場合に比べて室内ファンの回転数を低くなるように制御することにより、より多くの熱量が室外熱交換器に供給されるようにするのが好ましい。
When the outdoor temperature is low, the amount of heat required for defrosting is greater than when the outdoor temperature is high. Therefore, when the outdoor temperature is low, it is preferable that more heat is supplied to the outdoor heat exchanger by controlling the rotational speed of the indoor fan to be lower than when the outdoor temperature is high. .
本発明は、添付図面を参照しながら好ましい実施形態に関連して充分に記載されているが、この技術の熟練した人々にとっては種々の変形や修正は明白である。そのような変形や修正は、添付した請求の範囲による本発明の範囲から外れない限りにおいて、その中に含まれると理解されるべきである。
Although the present invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various variations and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as being included therein, so long as they do not depart from the scope of the present invention according to the appended claims.
本発明は、上述の実施の形態のような室外機と室内機とから構成される空気調和機に限らず、室外機と室内機とが一体型空気調和機にも適用可能である。
The present invention is not limited to an air conditioner configured by an outdoor unit and an indoor unit as in the above-described embodiment, but can be applied to an air conditioner in which the outdoor unit and the indoor unit are integrated.
２ 室外機、 ４ 室内機、 ６ 圧縮機、 ８ 四方弁、
１０ ストレーナ、 １２ 膨張弁、 １４ 室外熱交換器、
１６ 室内熱交換器、 １８ 冷媒配管、 ２０ 冷媒配管、
２２ 冷媒配管、 ２４ 冷媒配管、 ２６ アキュームレータ、
２８ 冷媒配管、 ３０ 電磁弁、 ３２ 冷媒配管、
３４ 室内ファン、３６ ルーバー、
３８ 着霜量検出手段（室外熱交換器温度センサ）、
４０ 人位置検出手段（人感センサ）。 2 outdoor units, 4 indoor units, 6 compressors, 8 four-way valves,
10 strainer, 12 expansion valve, 14 outdoor heat exchanger,
16 indoor heat exchanger, 18 refrigerant piping, 20 refrigerant piping,
22 refrigerant piping, 24 refrigerant piping, 26 accumulator,
28 refrigerant piping, 30 solenoid valve, 32 refrigerant piping,
34 indoor fans, 36 louvers,
38 Frosting amount detection means (outdoor heat exchanger temperature sensor),
40 Person position detecting means (human sensor).
１０ ストレーナ、 １２ 膨張弁、 １４ 室外熱交換器、
１６ 室内熱交換器、 １８ 冷媒配管、 ２０ 冷媒配管、
２２ 冷媒配管、 ２４ 冷媒配管、 ２６ アキュームレータ、
２８ 冷媒配管、 ３０ 電磁弁、 ３２ 冷媒配管、
３４ 室内ファン、３６ ルーバー、
３８ 着霜量検出手段（室外熱交換器温度センサ）、
４０ 人位置検出手段（人感センサ）。 2 outdoor units, 4 indoor units, 6 compressors, 8 four-way valves,
10 strainer, 12 expansion valve, 14 outdoor heat exchanger,
16 indoor heat exchanger, 18 refrigerant piping, 20 refrigerant piping,
22 refrigerant piping, 24 refrigerant piping, 26 accumulator,
28 refrigerant piping, 30 solenoid valve, 32 refrigerant piping,
34 indoor fans, 36 louvers,
38 Frosting amount detection means (outdoor heat exchanger temperature sensor),
40 Person position detecting means (human sensor).
Claims (5)
- 室外熱交換器、室内熱交換器、四方弁、および圧縮機を備え、圧縮機に暖められた冷媒によって室外熱交換器に付着する霜を溶解して除霜する空気調和機において、
室内熱交換器が暖めた空気を室内に送風する室内ファンと、
除霜が必要と判断された場合に、室内ファンを制御することによって室内に送風しつつ、暖房サイクルを実行できるように四方弁を制御することによって除霜を実行する除霜手段とを有する空気調和機。 In an air conditioner that includes an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, and a compressor, and melts and defrosts frost adhering to the outdoor heat exchanger by a refrigerant heated by the compressor.
An indoor fan for blowing the air heated by the indoor heat exchanger into the room,
Air having defrosting means for performing defrosting by controlling a four-way valve so that a heating cycle can be performed while air is blown indoors by controlling an indoor fan when it is determined that defrosting is necessary Harmony machine. - 除霜手段が、霜を融解するために必要な熱量と、圧縮機の出力と、除霜時間とに基づいて暖房に振分け可能な熱量を算出し、算出した熱量に基づいて室内ファンの回転数を制御する請求項１に記載の空気調和機。 The defrosting means calculates the amount of heat that can be distributed to heating based on the amount of heat necessary for melting the frost, the output of the compressor, and the defrosting time, and the number of rotations of the indoor fan based on the calculated amount of heat The air conditioner of Claim 1 which controls.
- 室内ファンによって送風された空気を方向付けするルーバーをさらに有し、
除霜が必要と判断された場合に、ルーバーが室内ファンから送風された空気を室内の上方に向かって方向付けする請求項１または２に記載の空気調和機。 A louver for directing air blown by the indoor fan;
The air conditioner according to claim 1 or 2, wherein when it is determined that defrosting is necessary, the louver directs air blown from the indoor fan toward the upper side of the room. - 人が存在する室内位置を検出する人位置検出手段をさらに有し、
除霜が必要と判断された場合に、ルーバーが室内ファンから送風された空気を、人位置検出手段が検出する人が存在する室内位置以外に方向付けする請求項３に記載の空気調和機。 It further has a human position detecting means for detecting the indoor position where the person exists,
The air conditioner according to claim 3, wherein when it is determined that defrosting is necessary, the louver directs the air blown from the indoor fan to a position other than the indoor position where the person detected by the human position detecting means exists. - 室外の温度を検出する室外温度検出手段をさらに有し、
除霜手段が、室外温度検出手段が検出する室外温度に基づいて室内ファンの回転数を制御する請求項１から４のいずれか一項に記載の空気調和機。 It further has an outdoor temperature detecting means for detecting the outdoor temperature,
The air conditioner according to any one of claims 1 to 4, wherein the defrosting unit controls the rotational speed of the indoor fan based on the outdoor temperature detected by the outdoor temperature detecting unit.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201180043603.4A CN103097825B (en) | 2010-09-09 | 2011-03-04 | Air conditioner |
| EP11823168.7A EP2615389B1 (en) | 2010-09-09 | 2011-03-04 | Air conditioner |
| BR112013005119-1A BR112013005119B1 (en) | 2010-09-09 | 2011-03-04 | air conditioner |
| KR1020137004436A KR20130137136A (en) | 2010-09-09 | 2011-03-04 | Air conditioning apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010202486A JP5249293B2 (en) | 2010-09-09 | 2010-09-09 | Air conditioner |
| JP2010-202486 | 2010-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012032682A1 true WO2012032682A1 (en) | 2012-03-15 |
Family
ID=45810296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/001293 WO2012032682A1 (en) | 2010-09-09 | 2011-03-04 | Air conditioning apparatus |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2615389B1 (en) |
| JP (1) | JP5249293B2 (en) |
| KR (1) | KR20130137136A (en) |
| CN (1) | CN103097825B (en) |
| BR (1) | BR112013005119B1 (en) |
| WO (1) | WO2012032682A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104246389A (en) * | 2012-05-01 | 2014-12-24 | 大金工业株式会社 | Air conditioning system and defrosting operation method |
| JP2017146026A (en) * | 2016-02-17 | 2017-08-24 | 東芝キヤリア株式会社 | Air conditioner |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015042922A (en) * | 2013-08-26 | 2015-03-05 | パナソニックＩｐマネジメント株式会社 | Air conditioner |
| CN104567076A (en) * | 2013-10-28 | 2015-04-29 | 珠海格力电器股份有限公司 | Air conditioning cycle device and control method thereof |
| CN104633871B (en) * | 2013-11-14 | 2017-07-25 | 珠海格力电器股份有限公司 | The control method of air-conditioning system |
| CN103742987B (en) * | 2014-01-22 | 2016-06-08 | 苏州翔箭智能科技有限公司 | The Defrost method of new blower fan system |
| JP6359397B2 (en) * | 2014-09-22 | 2018-07-18 | 株式会社コロナ | Combined heat source heat pump device |
| JP6359398B2 (en) * | 2014-09-22 | 2018-07-18 | 株式会社コロナ | Combined heat source heat pump device |
| JP6788008B2 (en) * | 2016-07-06 | 2020-11-18 | 三菱電機株式会社 | Refrigeration cycle equipment |
| CN107514744B (en) * | 2017-08-02 | 2019-10-01 | 广东美的暖通设备有限公司 | New blower and its anti-cold air control method and apparatus |
| JP7035623B2 (en) * | 2018-02-28 | 2022-03-15 | 株式会社富士通ゼネラル | Air conditioner |
| KR102212216B1 (en) * | 2018-11-27 | 2021-02-03 | 엘지전자 주식회사 | Air conditioner and method for controlling the same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH043843A (en) * | 1990-04-20 | 1992-01-08 | Fujitsu General Ltd | Method of controlling air conditioner |
| JPH04363536A (en) * | 1991-06-10 | 1992-12-16 | Toshiba Corp | Operation control method for air-conditioner |
| JPH04366341A (en) * | 1991-06-13 | 1992-12-18 | Daikin Ind Ltd | Air conditioner |
| JP2007285614A (en) * | 2006-04-18 | 2007-11-01 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP2008292034A (en) * | 2007-05-23 | 2008-12-04 | Panasonic Corp | Air conditioner |
| JP2009145032A (en) | 2007-11-21 | 2009-07-02 | Panasonic Corp | Refrigeration cycle apparatus and air conditioner equipped with the same |
| JP2010145020A (en) * | 2008-12-19 | 2010-07-01 | Mitsubishi Electric Corp | Heat pump device, and heat pump water heater and air conditioner loaded with the same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH109725A (en) * | 1996-06-25 | 1998-01-16 | Hitachi Ltd | Air conditioner |
| JP2002286273A (en) * | 2001-03-28 | 2002-10-03 | Mitsubishi Electric Corp | Air conditioner |
| JP2007040658A (en) * | 2005-08-05 | 2007-02-15 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP2009036502A (en) * | 2007-07-10 | 2009-02-19 | Panasonic Corp | Air conditioner |
| CN101392940B (en) * | 2008-11-03 | 2011-08-03 | 广州松下空调器有限公司 | Air conditioner control method and device thereof |
-
2010
- 2010-09-09 JP JP2010202486A patent/JP5249293B2/en active Active
-
2011
- 2011-03-04 EP EP11823168.7A patent/EP2615389B1/en active Active
- 2011-03-04 BR BR112013005119-1A patent/BR112013005119B1/en active IP Right Grant
- 2011-03-04 WO PCT/JP2011/001293 patent/WO2012032682A1/en active Application Filing
- 2011-03-04 KR KR1020137004436A patent/KR20130137136A/en not_active Application Discontinuation
- 2011-03-04 CN CN201180043603.4A patent/CN103097825B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH043843A (en) * | 1990-04-20 | 1992-01-08 | Fujitsu General Ltd | Method of controlling air conditioner |
| JPH04363536A (en) * | 1991-06-10 | 1992-12-16 | Toshiba Corp | Operation control method for air-conditioner |
| JPH04366341A (en) * | 1991-06-13 | 1992-12-18 | Daikin Ind Ltd | Air conditioner |
| JP2007285614A (en) * | 2006-04-18 | 2007-11-01 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP2008292034A (en) * | 2007-05-23 | 2008-12-04 | Panasonic Corp | Air conditioner |
| JP2009145032A (en) | 2007-11-21 | 2009-07-02 | Panasonic Corp | Refrigeration cycle apparatus and air conditioner equipped with the same |
| JP2010145020A (en) * | 2008-12-19 | 2010-07-01 | Mitsubishi Electric Corp | Heat pump device, and heat pump water heater and air conditioner loaded with the same |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2615389A4 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104246389A (en) * | 2012-05-01 | 2014-12-24 | 大金工业株式会社 | Air conditioning system and defrosting operation method |
| EP2857770A4 (en) * | 2012-05-01 | 2016-05-11 | Daikin Ind Ltd | Air conditioning system and defrosting operation method |
| JP2017146026A (en) * | 2016-02-17 | 2017-08-24 | 東芝キヤリア株式会社 | Air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112013005119B1 (en) | 2020-12-29 |
| EP2615389B1 (en) | 2018-08-15 |
| CN103097825A (en) | 2013-05-08 |
| EP2615389A4 (en) | 2016-03-09 |
| KR20130137136A (en) | 2013-12-16 |
| JP5249293B2 (en) | 2013-07-31 |
| CN103097825B (en) | 2015-12-16 |
| JP2012057878A (en) | 2012-03-22 |
| EP2615389A1 (en) | 2013-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5249293B2 (en) | Air conditioner | |
| JP5061642B2 (en) | Air conditioning ventilator | |
| EP2204622A1 (en) | Compressor operation control device and air conditioner using the same | |
| JP6225776B2 (en) | Multi-type air conditioner | |
| JP6237800B2 (en) | Air conditioner | |
| JP5507231B2 (en) | Air conditioner | |
| CN101932885B (en) | Air conditioner | |
| CN107023935B (en) | Air-conditioning system and its halt control method | |
| JP2013072621A (en) | Air conditioner | |
| JP2010096474A (en) | Air-conditioning control device and air conditioning system | |
| JP5851953B2 (en) | Air conditioner | |
| JP3620540B1 (en) | Control method of multi-room air conditioner | |
| JP4986443B2 (en) | Air conditioner | |
| JP5171759B2 (en) | Air conditioner | |
| WO2018029872A1 (en) | Air conditioner | |
| JP2019138599A (en) | Air conditioner | |
| JP4548979B2 (en) | Air conditioner | |
| WO2018029783A1 (en) | Air conditioning device | |
| JP2005016884A (en) | Air conditioner | |
| JP4215035B2 (en) | Air conditioner and control method thereof | |
| JP2011052848A (en) | Ceiling-embedded air conditioner | |
| JP6634731B2 (en) | Air conditioner | |
| JP5622547B2 (en) | Multi-room air conditioner | |
| WO2021054181A1 (en) | Air conditioning indoor unit and air conditioner | |
| JP2001280667A (en) | Air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 201180043603.4 Country of ref document: CN |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11823168 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 20137004436 Country of ref document: KR Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2011823168 Country of ref document: EP |
|
| REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112013005119 Country of ref document: BR |
|
| REG | Reference to national code |
Ref country code: BR Ref legal event code: B01E Ref document number: 112013005119 Country of ref document: BR |
|
| ENP | Entry into the national phase |
Ref document number: 112013005119 Country of ref document: BR Kind code of ref document: A2 Effective date: 20130301 |