JP2002257382A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP2002257382A JP2002257382A JP2001050780A JP2001050780A JP2002257382A JP 2002257382 A JP2002257382 A JP 2002257382A JP 2001050780 A JP2001050780 A JP 2001050780A JP 2001050780 A JP2001050780 A JP 2001050780A JP 2002257382 A JP2002257382 A JP 2002257382A
- Authority
- JP
- Japan
- Prior art keywords
- rotation speed
- blower
- outdoor
- blowers
- air conditioner
- 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
Classifications
-
- 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
- F25B2313/0294—Control issues related to the outdoor fan, e.g. controlling speed
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、複数の送風機を
上下に並べて設けた室外機を有する空気調和機に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having an outdoor unit in which a plurality of blowers are vertically arranged.
【０００２】[0002]
【従来の技術】１つの熱交換器に対し複数たとえば２つ
の送風機を並べて設けた空気調和機では、２つの送風機
の回転数が同一に設定されると、例えば特開2000-35636
2号公報に示されているように、空気吸込口の付近に風
速分布が生じ、それが原因となって大きないわゆる周期
的騒音が発生することが知られている。上記公報の例で
は、２つの送風機の回転数を互いに異ならせることで騒
音を低減している。2. Description of the Related Art In an air conditioner in which a plurality of, for example, two blowers are provided side by side with respect to one heat exchanger, if the rotation speeds of the two blowers are set to be the same, for example, JP-A-2000-35636
It is known that a wind speed distribution is generated in the vicinity of an air inlet as shown in Japanese Patent Publication No. 2 and large so-called periodic noise is generated due to the wind speed distribution. In the example of the above publication, noise is reduced by making the rotation speeds of the two blowers different from each other.
【０００３】また、上記公報では２つの送風機を室内機
に設けているが、２つの送風機を上下に並べて室外機に
設けた空気調和機もある。このような空気調和機でも、
２つの送風機の回転数が同一に設定されると、大きな周
期的騒音が発生してしまう。In the above publication, two blowers are provided in an indoor unit. However, there is an air conditioner in which two blowers are arranged vertically and provided in an outdoor unit. Even with such an air conditioner,
If the rotation speeds of the two blowers are set to be the same, a large periodic noise will be generated.
【０００４】対策として、２つの送風機の回転数を互い
に異ならせることが考えられるが、その際、熱交換器の
熱交換効率等の関係から、上側の送風機の回転数を下側
の送風機の回転数よりも大きく設定するのが一般的であ
る。As a countermeasure, it is conceivable to make the rotation speeds of the two blowers different from each other. In this case, the rotation speed of the upper blower is reduced by the rotation speed of the lower blower in view of the heat exchange efficiency of the heat exchanger. Generally, it is set to be larger than the number.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、２つの
送風機を上下に並べて設けた室外機の場合、その高さ寸
法が人の身長とほぼ同じとなるため、上側の送風機から
生じる音が人体にとって大きな騒音となって聴こえてし
まうという問題がある。However, in the case of an outdoor unit in which two blowers are arranged vertically, the height of the outdoor unit is almost the same as the height of a person, so that the sound generated by the upper fan is loud to the human body. There is a problem that it is heard as noise.
【０００６】この発明は、上記の事情を考慮したもの
で、その目的とするところは、室外機の送風機騒音を確
実に低減することができる空気調和機を提供することに
ある。The present invention has been made in consideration of the above circumstances, and has as its object to provide an air conditioner that can surely reduce fan noise of an outdoor unit.
【０００７】[0007]
【課題を解決するための手段】請求項１に係る発明の空
気調和機は、複数の送風機を上下に並べて設けた室外機
を備え、上側の送風機の回転数を少なくとも回転数の高
い領域において下側の送風機の回転数よりも低く設定す
る。An air conditioner according to a first aspect of the present invention includes an outdoor unit in which a plurality of blowers are arranged vertically, and the rotational speed of the upper blower is reduced at least in a region where the rotational speed is high. Set lower than the rotation speed of the blower on the side.
【０００８】請求項２に係る発明の空気調和機は、複数
の送風機を上下に並べて設けた室外機を備え、上側の送
風機の回転数を少なくとも回転数の高い領域において下
側の送風機の回転数よりも低く設定するか、あるいは高
く設定するか、その切換えを可能としている。An air conditioner according to a second aspect of the present invention includes an outdoor unit in which a plurality of blowers are arranged vertically, and the rotational speed of the upper blower is set at least in a region where the rotational speed is high. It is possible to switch between setting lower and higher values.
【０００９】請求項３に係る発明の空気調和機は、複数
の送風機を上下に並べて設け、かつ圧縮機および圧縮機
駆動用のインバータを有し、上側の送風機をインバータ
の冷却用として兼用する室外機を備えている。そして、
各送風機に対する要求送風量が所定値以上の場合に、上
側の送風機の回転数を下側の送風機の回転数よりも低く
設定する。各送風機に対する要求送風量が所定値未満の
場合は、上側の送風機の回転数を下側の送風機の回転数
よりも高く設定する。An air conditioner according to a third aspect of the present invention is an outdoor air conditioner in which a plurality of blowers are vertically arranged, a compressor and an inverter for driving the compressor are used, and the upper blower is also used for cooling the inverter. Machine. And
When the required air volume for each fan is equal to or more than a predetermined value, the rotation speed of the upper fan is set lower than the rotation speed of the lower fan. If the required air volume for each fan is less than a predetermined value, the rotation speed of the upper fan is set higher than the rotation speed of the lower fan.
【００１０】[0010]
【発明の実施の形態】［１］以下、この発明の第１実施
形態について図面を参照して説明する。図１において、
１は空気調和機の室外機で、人の身長とほぼ同じ高さ寸
法を有し、前面に２つの空気吸込口２，３を上下に並べ
て有している。この室外機１の一方の側面および背面は
開放され、その側面および背面の内側にＬ字形状の室内
熱交換器４が配設されている。[1] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In FIG.
Reference numeral 1 denotes an outdoor unit of an air conditioner, which has almost the same height as the height of a person, and has two air inlets 2, 3 arranged vertically on the front surface. One side and back of the outdoor unit 1 are open, and an L-shaped indoor heat exchanger 4 is disposed inside the side and back.
【００１１】また、室外機１内には、図２に示すよう
に、室内熱交換器４の内側に室外送風機５，６が上下に
並べて設けられている。上側の室外送風機５は、空気吸
込口２と対応する位置に設けられ、その空気吸込口２か
ら外気を吸込み、その吸込み空気を室外熱交換器４に供
給する。下側の室外送風機６は、空気吸込口３と対応す
る位置に設けられ、その空気吸込口３から外気を吸込
み、その吸込み空気を室外熱交換器４に供給する。In the outdoor unit 1, as shown in FIG. 2, outdoor blowers 5, 6 are provided inside the indoor heat exchanger 4 so as to be vertically arranged. The upper outdoor blower 5 is provided at a position corresponding to the air suction port 2, sucks outside air from the air suction port 2, and supplies the sucked air to the outdoor heat exchanger 4. The lower outdoor blower 6 is provided at a position corresponding to the air suction port 3, sucks outside air from the air suction port 3, and supplies the sucked air to the outdoor heat exchanger 4.
【００１２】本体１の内部空間は、仕切壁７により、室
外熱交換器４および室外送風機５，６が存する空間と、
圧縮機８および回路基板９が存する空間とに分けられて
いる。回路基板９には、後述するインバータ１１の構成
部品および制御部３０などが搭載されている。また、回
路基板９は仕切壁７に装着されており、その装着箇所か
ら仕切壁７を貫通し且つ上記通風空間に臨む状態に放熱
板いわゆるヒートシンク１０が設けられている。ヒート
シンク１０は、インバータ１１の構成部品のうち発熱量
が大きい部品であるスイッチング素子の放熱用であり、
室外送風機５の送風を受け易い位置に臨んでいる。つま
り、上側の室外送風機５を、室外熱交換器４に対する送
風だけでなく、インバータ１１の冷却用としても兼用す
るようにしている。The interior space of the main body 1 is divided by a partition wall 7 into a space where the outdoor heat exchanger 4 and the outdoor blowers 5 and 6 are present.
It is divided into a space where the compressor 8 and the circuit board 9 exist. On the circuit board 9, components of the inverter 11, which will be described later, and a control unit 30 are mounted. The circuit board 9 is mounted on the partition wall 7, and a heat sink 10, which is a radiator plate, is provided so as to penetrate the partition wall 7 from the mounting position and face the ventilation space. The heat sink 10 is for radiating heat from a switching element which is a component having a large amount of heat generation among the components of the inverter 11.
It faces a position where the outdoor blower 5 can easily receive air. That is, the upper outdoor blower 5 is used not only for blowing air to the outdoor heat exchanger 4 but also for cooling the inverter 11.
【００１３】空気調和機の冷凍サイクルおよび制御回路
を図３に示す。上記圧縮機８の吐出口に四方弁２１を介
して上記室外熱交換器４が接続され、その室外熱交換器
４に電子膨張弁２２を介して室内熱交換器２３が接続さ
れている。そして、室内熱交換器２３に上記四方弁２１
を介して圧縮機８の吸込口が接続されている。すなわ
ち、冷房時は図示破線矢印の方向に冷媒が流れ、室外熱
交換器４が凝縮器、室内熱交換器２３が蒸発器として機
能する。暖房時は四方弁２１が切換わることにより図示
実線矢印の方向に冷媒が流れ、室内熱交換器２３が凝縮
器、室外熱交換器４が蒸発器として機能する。FIG. 3 shows a refrigeration cycle and a control circuit of the air conditioner. The outdoor heat exchanger 4 is connected to a discharge port of the compressor 8 via a four-way valve 21, and an indoor heat exchanger 23 is connected to the outdoor heat exchanger 4 via an electronic expansion valve 22. Then, the four-way valve 21 is connected to the indoor heat exchanger 23.
Is connected to the suction port of the compressor 8. That is, during cooling, the refrigerant flows in the direction of the dashed arrow in the drawing, and the outdoor heat exchanger 4 functions as a condenser and the indoor heat exchanger 23 functions as an evaporator. During heating, the four-way valve 21 is switched so that the refrigerant flows in the direction of the solid line arrow in the drawing, and the indoor heat exchanger 23 functions as a condenser and the outdoor heat exchanger 4 functions as an evaporator.
【００１４】室内熱交換器２３の近傍には、その室内熱
交換器２３を通して室内空気を循環させるための室内送
風機２４、および室内温度センサ２５が設けられてい
る。室外熱交換器４の近傍には上記室外送風機５，６お
よび外気温度センサ２６が設けられている。An indoor blower 24 for circulating indoor air through the indoor heat exchanger 23 and an indoor temperature sensor 25 are provided near the indoor heat exchanger 23. The outdoor blowers 5 and 6 and the outside air temperature sensor 26 are provided near the outdoor heat exchanger 4.
【００１５】３０は制御部で、空気調和機の全体を制御
する。この制御部３０に、四方弁２１、電子膨張弁２
２、室内送風機２４のモータ２４Ｍ、室内温度センサ２
５、室外送風機５，６のモータ５Ｍ，６Ｍ、外気温度セ
ンサ２６、インバータ１１、および操作表示部３１が接
続されている。A control unit 30 controls the entire air conditioner. The control unit 30 includes a four-way valve 21 and an electronic expansion valve 2.
2. Motor 24M of indoor blower 24, indoor temperature sensor 2
5, the motors 5M and 6M of the outdoor blowers 5 and 6, the outside air temperature sensor 26, the inverter 11, and the operation display unit 31 are connected.
【００１６】インバータ１１は、商用交流電源１２の電
圧を整流し、その整流した電圧をスイッチング素子のオ
ン，オフにより所定周波数の電圧に変換し、出力する。
この出力が圧縮機８に駆動電力として供給される。The inverter 11 rectifies the voltage of the commercial AC power supply 12, converts the rectified voltage into a voltage of a predetermined frequency by turning on and off a switching element, and outputs the voltage.
This output is supplied to the compressor 8 as drive power.
【００１７】制御部３０は、主要な機能として次の
（１）〜（４）を備える。 （１）室内温度センサ２５の検知温度Ｔａと操作表示部
３１の操作による設定室内温度Ｔｓとの差ΔＴを求め、
その温度差ΔＴおよび外気温度センサ２６の検知温度Ｔ
ｏをパラメータとして空調負荷を求める手段。 （２）求めた空調負荷に応じてインバータ１１の出力周
波数（つまり圧縮機８の容量）を制御する制御手段。 （３）求めた空調負荷に応じて室外送風機５，６に対す
る要求送風量を決定する手段。 （４）上側の室外送風機５の回転数を少なくとも回転数
の高い領域において下側の室外送風機６の回転数よりも
低く設定する制御手段。The control unit 30 has the following main functions (1) to (4). (1) The difference ΔT between the detected temperature Ta of the room temperature sensor 25 and the set room temperature Ts by operating the operation display unit 31 is obtained,
The temperature difference ΔT and the detected temperature T of the outside air temperature sensor 26
A means for determining the air conditioning load using o as a parameter. (2) Control means for controlling the output frequency of the inverter 11 (that is, the capacity of the compressor 8) according to the obtained air conditioning load. (3) Means for determining the required airflow to the outdoor blowers 5 and 6 according to the obtained air conditioning load. (4) Control means for setting the rotational speed of the upper outdoor blower 5 to be lower than the rotational speed of the lower outdoor blower 6 at least in a region where the rotational speed is high.
【００１８】つぎに、作用を説明する。室外送風機５，
６に対して決定される要求送風量として、多い方から順
に、Ｈ（高），Ｍ（中），Ｌ（低），ＵＬ（極低）があ
る。これら要求送風量ごとに、図４に示すように、室外
送風機５の回転数ａ１，ａ２，ａ３，ａ４が設定され、
室外送風機６の回転数ｂ１，ｂ２，ｂ３，ｂ４が設定さ
れる。Next, the operation will be described. Outdoor blower 5,
H (high), M (medium), L (low), and UL (extremely low) are determined as the required air flow rates determined for 6 in descending order. As shown in FIG. 4, the rotation speeds a1, a2, a3, and a4 of the outdoor blower 5 are set for each of these required airflow rates,
The rotation speeds b1, b2, b3, and b4 of the outdoor blower 6 are set.
【００１９】これら設定回転数には、ａ１＜ｂ１、ａ２
＜ｂ２、ａ３＜ｂ３、ａ４＜ｂ４の条件が含まれてい
る。ａ１，ｂ１の差、ａ２，ｂ２の差、ａ３，ｂ３の
差、ａ４，ｂ４の差については、３０ｒｐｍ程度から、
できれば１００ｒｐｍ以上が望ましい。These set rotation speeds include a1 <b1, a2
<B2, a3 <b3, a4 <b4. The difference between a1 and b1, the difference between a2 and b2, the difference between a3 and b3, and the difference between a4 and b4 are from about 30 rpm.
If possible, 100 rpm or more is desirable.
【００２０】ここでは、高回転域から低回転域までの全
域にわたって回転数差を持たせたが、送風機騒音が回転
数に比例し、回転数が高いほど送風機騒音が大きくなる
ことから、高回転域の設定回転数ａ１，ｂ１についてだ
け差を持たせるようにしてもよい。Here, the rotation speed difference is provided over the entire range from the high rotation range to the low rotation range. However, the fan noise is proportional to the rotation speed, and the higher the rotation speed, the greater the fan noise. A difference may be provided only for the set rotation speeds a1 and b1 of the range.
【００２１】室外送風機５，６の回転数を変化させる手
段としては、リレーによるモータ巻線切替、モータに対
する駆動電圧の位相制御、ＤＣモータの採用およびその
駆動電圧レベル制御など、種々があるが、回転数を変化
できればいずれの方法でもよい。There are various means for changing the number of revolutions of the outdoor blowers 5 and 6, such as switching of motor winding by a relay, phase control of a drive voltage for the motor, adoption of a DC motor, and control of its drive voltage level. Any method can be used as long as the number of rotations can be changed.
【００２２】このように、上側の室外送風機５の回転数
と下側の室外送風機６の回転数とを異ならせることによ
り、室外送風機５，６の運転に基づく周期的騒音を低減
することが可能である。As described above, by making the rotational speed of the upper outdoor blower 5 different from that of the lower outdoor blower 6, it is possible to reduce the periodic noise caused by the operation of the outdoor blowers 5 and 6. It is.
【００２３】とくに、人体の耳に近くなる上側の室外送
風機５の回転数を下側の室外送風機６の回転数よりも低
くするようにしているので、聴感面でも顕著な騒音低減
効果が得られる。In particular, since the rotation speed of the upper outdoor blower 5 which is closer to the ear of the human body is set lower than the rotation speed of the lower outdoor blower 6, a remarkable noise reduction effect can be obtained also in terms of hearing. .
【００２４】［２］第２実施形態について説明する。図
３に破線で示すように、制御部３０にモード切換スイッ
チ３２が接続されている。制御部３０は、上記（４）の
機能に代えて、次の（１１）〜（１３）の機能を備えて
いる。 （１１）上側の室外送風機５の回転数を少なくとも回転
数の高い領域において下側の室外送風機６の回転数より
も低く設定する第１制御手段。 （１２）上側の室外送風機５の回転数を少なくとも回転
数の高い領域において下側の室外送風機６の回転数より
も高く設定する第２制御手段。 （１３）第１制御手段による設定（第１モード運転）お
よび第２制御手段による設定（第２モード運転）をモー
ド切換スイッチ３２の操作に応じて切換える切換手段。 他の構成は第１実施形態と同じである。[2] A second embodiment will be described. As shown by a broken line in FIG. 3, a mode switch 32 is connected to the control unit 30. The control unit 30 has the following functions (11) to (13) instead of the function (4). (11) First control means for setting the rotation speed of the upper outdoor blower 5 lower than the rotation speed of the lower outdoor blower 6 at least in a region where the rotation speed is high. (12) Second control means for setting the rotation speed of the upper outdoor blower 5 higher than the rotation speed of the lower outdoor blower 6 at least in a region where the rotation speed is high. (13) Switching means for switching the setting by the first control means (first mode operation) and the setting by the second control means (second mode operation) in accordance with the operation of the mode switch 32. Other configurations are the same as those of the first embodiment.
【００２５】要するに、室外送風機５，６に対する要求
送風量としてＨ（高），Ｍ（中），Ｌ（低），ＵＬ（極
低）があり、これら要求送風量ごとに室外送風機５の回
転数ａ１，ａ２，ａ３，ａ４および室外送風機６の回転
数ｂ１，ｂ２，ｂ３，ｂ４が設定されるが、設定回転数
には第１制御手段によるａ１＜ｂ１、ａ２＜ｂ２、ａ３
＜ｂ３、ａ４＜ｂ４の条件の第１モード運転と、第２制
御手段によるａ１＞ｂ１、ａ２＞ｂ２、ａ３＞ｂ３、ａ
４＞ｂ４の条件の第２モード運転とがある。そして、図
５のフローチャートに示すように、モード切換スイッチ
３２がオンされると、第１モード運転が選択される。モ
ード切換スイッチ３２がオフされると、第２モード運転
が選択される。In short, there are H (high), M (medium), L (low), and UL (extremely low) as the required airflow for the outdoor blowers 5 and 6, and the rotation speed of the outdoor blower 5 for each of these required airflows. a1, a2, a3, a4 and the rotational speeds b1, b2, b3, b4 of the outdoor blower 6 are set, and the set rotational speeds are set to a1 <b1, a2 <b2, a3 by the first control means.
<B3, a4> first mode operation under the condition of <b4, and a1> b1, a2> b2, a3> b3, a
4> b4 in the second mode operation. Then, as shown in the flowchart of FIG. 5, when the mode switch 32 is turned on, the first mode operation is selected. When the mode switch 32 is turned off, the second mode operation is selected.
【００２６】たとえば、室外機１が通行人等の近くや他
の建物の近くに設置され、騒音低減が重視される場合
は、係員によってモード切換スイッチ３２がオンされ、
第１モード運転が選択される。これにより、人体の耳に
近くなる上側の室外送風機５の回転数が下側の室外送風
機６の回転数よりも低く設定され、周期的騒音が人体の
聴感面を含めて大幅に低減される。For example, when the outdoor unit 1 is installed near a pedestrian or the like or near another building and noise reduction is important, a mode switch 32 is turned on by a person in charge.
The first mode operation is selected. As a result, the rotation speed of the upper outdoor blower 5 closer to the ear of the human body is set lower than the rotation speed of the lower outdoor blower 6, and the periodic noise is greatly reduced including the human body's hearing surface.
【００２７】ビルの屋上など、騒音が問題とならない場
所に室外機１が設置される場合は、係員によってモード
切換スイッチ３２がオフされ、第２モード運転が選択さ
れる。これにより、上側の室外送風機５の回転数が下側
の室外送風機６の回転数よりも高く設定される。これ
は、周期的騒音の低減を図りながら、インバータ１１に
対する冷却風量を積極的に増大させること、ひいてはイ
ンバータ１１の効率の良い安定運転につながる。When the outdoor unit 1 is installed in a place where noise is not a problem, such as the roof of a building, the mode switch 32 is turned off by the attendant, and the second mode operation is selected. Thereby, the rotation speed of the upper outdoor blower 5 is set higher than the rotation speed of the lower outdoor blower 6. This positively increases the amount of cooling air to the inverter 11 while reducing periodic noise, and leads to efficient and stable operation of the inverter 11.
【００２８】［３］第３実施形態について説明する。制
御部３０は、上記（４）の機能に代えて、次の（２１）
（２２）の機能を備えている。 （２１）室外送風機５，６に対する要求送風量が所定値
以上（Ｈ，Ｍ）のとき、上側の室外送風機５の回転数を
下側の室外送風機６の回転数よりも低く設定する第１制
御手段。 （２２）室外送風機５，６に対する要求送風量が所定値
未満（Ｌ，ＵＬ）のとき、上側の室外送風機５の回転数
を下側の室外送風機６の回転数よりも高く設定する第２
制御手段。 他の構成は第１実施形態と同じである。[3] A third embodiment will be described. The control unit 30 replaces the function of (4) with the following (21)
It has the function of (22). (21) First control for setting the number of revolutions of the upper outdoor fan 5 to be lower than the number of revolutions of the lower outdoor fan 6 when the required air volume for the outdoor fans 5 and 6 is equal to or more than a predetermined value (H, M). means. (22) The second setting in which the rotation speed of the upper outdoor blower 5 is set to be higher than the rotation speed of the lower outdoor blower 6 when the required blower amount to the outdoor blowers 5 and 6 is less than a predetermined value (L, UL).
Control means. Other configurations are the same as those of the first embodiment.
【００２９】要するに、室外送風機５，６に対する要求
送風量としてＨ（高），Ｍ（中），Ｌ（低），ＵＬ（極
低）があり、これら要求送風量ごとに室外送風機５の回
転数ａ１，ａ２，ａ３，ａ４および室外送風機６の回転
数ｂ１，ｂ２，ｂ３，ｂ４が設定されるが、設定回転数
には第１制御手段によるａ１＜ｂ１、ａ２＜ｂ２の条件
と、第２制御手段によるａ３＞ｂ３、ａ４＞ｂ４の条件
とが含まれている。In short, there are H (high), M (medium), L (low), and UL (extremely low) as the required airflow for the outdoor blowers 5 and 6, and the rotation speed of the outdoor blower 5 for each of these required airflows. a1, a2, a3, and a4 and the rotation speeds b1, b2, b3, and b4 of the outdoor blower 6 are set. The set rotation speeds include the conditions of a1 <b1 and a2 <b2 by the first control unit and the second rotation speed. The conditions of a3> b3 and a4> b4 by the control means are included.
【００３０】たとえば、騒音が問題となる高風量域
（Ｈ，Ｍ）では、人体の耳に近くなる上側の室外送風機
５の回転数が下側の室外送風機６の回転数よりも低く設
定され、周期的騒音が人体の聴感面を含めて大幅に低減
される。For example, in the high air volume range (H, M) where noise is a problem, the rotation speed of the upper outdoor blower 5 which is closer to the human ear is set lower than the rotation speed of the lower outdoor blower 6. Periodic noise is greatly reduced, including the auditory surface of the human body.
【００３１】騒音がもともと小さい低風量域（Ｌ，Ｕ
Ｌ）では、上側の室外送風機５の回転数が下側の室外送
風機６の回転数よりも高く設定される。これは、周期的
騒音の低減を図りながら、インバータ１１に対する冷却
風量を積極的に増大させること、ひいてはインバータ１
１の効率の良い安定運転につながる。なお、この発明は
上記各実施形態に限定されるものではなく、要旨を変え
ない範囲で種々変形実施可能である。The low air volume range (L, U
In L), the rotation speed of the upper outdoor blower 5 is set higher than the rotation speed of the lower outdoor blower 6. This is because the amount of cooling air to the inverter 11 is positively increased while reducing the periodic noise.
1 leads to efficient and stable operation. The present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention.
【００３２】[0032]
【発明の効果】以上述べたようにこの発明によれば、室
外機の送風機騒音を確実に低減することができる空気調
和機を提供できる。As described above, according to the present invention, it is possible to provide an air conditioner that can surely reduce fan noise of an outdoor unit.
【図１】各実施形態における室外機の外観を示す図。FIG. 1 is a diagram showing an appearance of an outdoor unit in each embodiment.
【図２】各実施形態における室外機の内部構成を示す
図。FIG. 2 is a diagram showing an internal configuration of an outdoor unit in each embodiment.
【図３】各実施形態における冷凍サイクルおよび制御回
路の構成を示す図。FIG. 3 is a diagram showing a configuration of a refrigeration cycle and a control circuit in each embodiment.
【図４】各実施形態における要求送風量と各室外送風機
の設定回転数との関係を示す図。FIG. 4 is a diagram showing a relationship between a required air flow rate and a set rotation speed of each outdoor blower in each embodiment.
【図５】第２実施形態の作用を説明するためのフローチ
ャート。FIG. 5 is a flowchart for explaining the operation of the second embodiment.
１…室外機、２，３…空気吸込口、４…室外熱交換器、
５…上側の室内送風機、６…下側の室内送風機、７…仕
切壁、８…圧縮機、９…回路基板、１０…ヒートシン
ク、１１…インバータ、３０…制御部、３２…モード切
換スイッチ1: outdoor unit, 2, 3: air inlet, 4: outdoor heat exchanger,
5: Upper indoor blower, 6: Lower indoor blower, 7: Partition wall, 8: Compressor, 9: Circuit board, 10: Heat sink, 11: Inverter, 30: Control unit, 32: Mode switch
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山本 和男 静岡県富士市蓼原336番地 東芝キヤリア 株式会社内 (72)発明者 鈴木 敏裕 静岡県富士市蓼原336番地 東芝キヤリア 株式会社内 (72)発明者 海野 英晴 静岡県富士市蓼原336番地 東芝キヤリア 株式会社内 (72)発明者 山根 宏昌 静岡県富士市蓼原336番地 東芝キヤリア 株式会社内 (72)発明者 小谷 浩一 静岡県富士市蓼原336番地 東芝キヤリア 株式会社内 (72)発明者 長田 稔 静岡県富士市蓼原336番地 東芝キヤリア エンジニアリング株式会社内 Ｆターム(参考） 3L060 AA08 CC09 DD05 EE06 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazuo Yamamoto 336 Tatehara Carrier, Fuji City, Shizuoka Prefecture Toshiba Carrier Co., Ltd. (72) Inventor Toshihiro Suzuki 336 Tatehara Carrier Company, Fuji City, Shizuoka Prefecture Toshiba Carrier Co., Ltd. Hideharu Umino 336 Tatehara Carrier, Fuji City, Shizuoka Prefecture Toshiba Carrier Co., Ltd. In-house (72) Inventor Minoru Nagata 336 Tatehara, Fuji-shi, Shizuoka Toshiba Carrier Engineering Co., Ltd. F-term (reference) 3L060 AA08 CC09 DD05 EE06
Claims (3)
機と、 前記上側の送風機の回転数を少なくとも回転数の高い領
域において前記下側の送風機の回転数よりも低く設定す
る制御手段、を備えたことを特徴とする空気調和機。An outdoor unit in which a plurality of blowers are arranged vertically, and control means for setting a rotation speed of the upper blower to be lower than a rotation speed of the lower blower in at least a high rotation speed region. An air conditioner, comprising:
機と、 前記上側の送風機の回転数を少なくとも回転数の高い領
域において前記下側の送風機の回転数よりも低く設定す
る第１制御手段と、 前記上側の送風機の回転数を少なくとも回転数の高い領
域において前記下側の送風機の回転数よりも高く設定す
る第２制御手段と、 前記各制御手段による設定を切換える切換手段と、 を備えたことを特徴とする空気調和機。2. An outdoor unit in which a plurality of blowers are arranged vertically, and a first control means for setting the rotational speed of the upper blower to be lower than the rotational speed of the lower blower at least in a region where the rotational speed is high. And second switching means for setting the rotation speed of the upper blower higher than the rotation speed of the lower blower at least in a region where the rotation speed is high, and switching means for switching the setting by each control means. An air conditioner characterized by that:
圧縮機および圧縮機駆動用のインバータを有し、上側の
送風機をインバータの冷却用として兼用する室外機と、 前記各送風機に対する要求送風量が所定値以上のとき、
前記上側の送風機の回転数を前記下側の送風機の回転数
よりも低く設定する第１制御手段と、 前記各送風機に対する要求送風量が所定値未満のとき、
前記上側の送風機の回転数を前記下側の送風機の回転数
よりも高く設定する第２制御手段と、 を備えたことを特徴とする空気調和機。3. An outdoor unit having a plurality of blowers arranged vertically and having a compressor and an inverter for driving the compressor, wherein an outdoor unit also serves as an upper blower for cooling the inverter, and a required air volume for each of the blowers. Is greater than or equal to a predetermined value,
First control means for setting the rotation speed of the upper blower to be lower than the rotation speed of the lower blower, when a required airflow for each of the blowers is less than a predetermined value,
An air conditioner comprising: a second control unit configured to set a rotation speed of the upper fan to be higher than a rotation speed of the lower fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001050780A JP4430258B2 (en) | 2001-02-26 | 2001-02-26 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001050780A JP4430258B2 (en) | 2001-02-26 | 2001-02-26 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002257382A true JP2002257382A (en) | 2002-09-11 |
| JP4430258B2 JP4430258B2 (en) | 2010-03-10 |
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ID=18911688
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001050780A Expired - Lifetime JP4430258B2 (en) | 2001-02-26 | 2001-02-26 | Air conditioner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012017478A1 (en) * | 2010-08-04 | 2012-02-09 | 三菱電機株式会社 | Indoor unit for air conditioner and air conditioner |
| JP2012193900A (en) * | 2011-03-16 | 2012-10-11 | Fujitsu General Ltd | Outdoor unit of air conditioner |
| JP2015137813A (en) * | 2014-01-23 | 2015-07-30 | 株式会社ハーマン | Bathroom heater/dryer |
| JP2016519278A (en) * | 2013-05-14 | 2016-06-30 | グリー エレクトリック アプライアンシーズ インク オブ ズーハイＧｒｅｅ Ｅｌｅｃｔｒｉｃ Ａｐｐｌｉａｎｃｅｓ， Ｉｎｃ． Ｏｆ Ｚｈｕｈａｉ | Control method of outdoor fan motor of air conditioner |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5538503B2 (en) | 2012-10-05 | 2014-07-02 | 三菱電機株式会社 | Outdoor unit and refrigeration cycle apparatus |
-
2001
- 2001-02-26 JP JP2001050780A patent/JP4430258B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012017478A1 (en) * | 2010-08-04 | 2012-02-09 | 三菱電機株式会社 | Indoor unit for air conditioner and air conditioner |
| JP5474199B2 (en) * | 2010-08-04 | 2014-04-16 | 三菱電機株式会社 | Air conditioner indoor unit and air conditioner |
| JP2012193900A (en) * | 2011-03-16 | 2012-10-11 | Fujitsu General Ltd | Outdoor unit of air conditioner |
| JP2016519278A (en) * | 2013-05-14 | 2016-06-30 | グリー エレクトリック アプライアンシーズ インク オブ ズーハイＧｒｅｅ Ｅｌｅｃｔｒｉｃ Ａｐｐｌｉａｎｃｅｓ， Ｉｎｃ． Ｏｆ Ｚｈｕｈａｉ | Control method of outdoor fan motor of air conditioner |
| JP2015137813A (en) * | 2014-01-23 | 2015-07-30 | 株式会社ハーマン | Bathroom heater/dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4430258B2 (en) | 2010-03-10 |
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