JP2022046351A - Outdoor machine of air conditioner - Google Patents

Outdoor machine of air conditioner Download PDF

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JP2022046351A
JP2022046351A JP2020152354A JP2020152354A JP2022046351A JP 2022046351 A JP2022046351 A JP 2022046351A JP 2020152354 A JP2020152354 A JP 2020152354A JP 2020152354 A JP2020152354 A JP 2020152354A JP 2022046351 A JP2022046351 A JP 2022046351A
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fan
heat exchanger
outdoor unit
air conditioner
fans
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真弘 蜂矢
Mahiro Hachiya
実 吉川
Minoru Yoshikawa
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NEC Corp
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NEC Corp
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Priority to JP2020152354A priority Critical patent/JP2022046351A/en
Priority to US17/464,907 priority patent/US20220074607A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Air-Flow Control Members (AREA)

Abstract

To solve the problem that in a case of using a small fan in an outdoor machine for a data center, the power consumption of the fan is larger than in a case of using a large fan, in a conventional structure in which a fan is provided horizontally at the upper part of a housing of an outdoor machine.SOLUTION: In order to solve the above problem, a small fan 1 is installed near a ventilation surface 2a of a heat exchanger 2 so as to be parallel to the ventilation surface 2a of the heat exchanger 2, and the small fan 1 and the heat exchanger 2 are arranged so that the ventilation areas thereof are the same, thereby maximizing the number of small fans 1 that can be installed and reducing power consumption.SELECTED DRAWING: Figure 1

Description

特許法第３０条第２項適用申請有り 発行日（公開日） 令和２年９月４日 刊行物名 ２０２０年度 日本冷凍空調学会 年次大会 講演論文集 公益社団法人日本冷凍空調学会 発行（Ｗｅｂ公開ＵＲＬ：ｈｔｔｐｓ：／／ｗｗｗ．ｊｓｒａｅ－ｎｅｎｊｉ．ｏｒｇ／ｎｅｎｊｉ２０２０／ｃｄ－ｒｏｍ／ｐｄｆ／Ｐａｐｅｒ－１２２１．ｐｄｆ ） ＜資 料＞２０２０年度 日本冷凍空調学会 年次大会 ウェブページ プリントアウト ＜資 料＞掲載研究論文 抜粋Application for application of Article 30, Paragraph 2 of the Patent Act Publication date (publication date) September 4, 2nd year Publication name 2020 Annual Meeting of the Japan Society of Refrigerating and Air-Conditioning Proceedings Published by the Japan Society of Refrigerating and Air-Conditioning (Web) Public URL: https: //www.jsrae-nenji.org/nenji2020/cd-rom/pdf/Paper-1221.pdf) <Materials> 2020 Japan Society of Refrigerating and Air-Conditioning Annual Meeting Web Page Printout <Materials> Excerpts from published research papers

本発明は電子機器の冷却装置に関する。特に、冷凍サイクルを利用したデータセンタ向け空調機の室外機に関する。 The present invention relates to a cooling device for an electronic device. In particular, it relates to an outdoor unit of an air conditioner for a data center using a refrigeration cycle.

データセンタのサーバルームの冷却には、一般的にパッケージエアコンと呼ばれる冷凍サイクルを利用した空調機が使用されている。
前記空調機の室外機には、交流電動機により駆動される直径６００ｍｍ程度の大型ファンが使用されており、１～２台のファンが筐体上部へ水平に設置されている。また、熱交換器は放熱面積を確保するために、筐体内部へ斜めに設置されている。筐体下部から吸気を行い、筐体上部から排気を行う構造になっている。 An air conditioner that uses a refrigeration cycle, which is generally called a package air conditioner, is used to cool the server room of the data center.
A large fan with a diameter of about 600 mm, which is driven by an AC motor, is used as the outdoor unit of the air conditioner, and one or two fans are horizontally installed on the upper part of the housing. Further, the heat exchanger is installed diagonally inside the housing in order to secure a heat dissipation area. The structure is such that air is taken in from the lower part of the housing and exhausted from the upper part of the housing.

特開昭６１－１２８０７４号公報Japanese Unexamined Patent Publication No. 61-128074 特開２０１４－１６３５３０号公報Japanese Unexamined Patent Publication No. 2014-163530

しかしながら、前記の構造には次のような課題がある。
近年ではデータセンタの省電力化の施策としてデータセンタの直流電源化が進められており、空調機にも直流電源化の要請がある。しかし、従来の室外機に使用されているような大型ファンは、交流電動機で駆動するものしか流通していない。このため、室外機を直流電源化するには直径３００ｍｍ程度以下の一般的な直流電動機により駆動可能な小型ファンを使用することが求められている。 However, the above structure has the following problems.
In recent years, as a measure to save power in data centers, the use of DC power sources in data centers has been promoted, and there is a demand for air conditioners to use DC power sources. However, only large fans such as those used in conventional outdoor units are distributed that are driven by AC motors. Therefore, in order to convert the outdoor unit into a DC power source, it is required to use a small fan that can be driven by a general DC motor having a diameter of about 300 mm or less.

本発明の目的は、例えば、データセンタ向けの用途で用いられる空調機の室外機において、小型ファン使用時でも、室外機の放熱性能を維持しながら、大型ファン使用時と同等以下のファン電力にすることである。 An object of the present invention is, for example, in an outdoor unit of an air conditioner used in an application for a data center, the fan power is equal to or less than that when a large fan is used while maintaining the heat dissipation performance of the outdoor unit even when a small fan is used. It is to be.

前記の課題を解決するために、本発明にかかる空調機の室外機は、ファンと熱交換器を備え、前記ファンは前記熱交換器の通風面の近傍に複数台並べて設置されていることを特徴とする。 In order to solve the above problems, the outdoor unit of the air conditioner according to the present invention includes a fan and a heat exchanger, and a plurality of the fans are installed side by side in the vicinity of the ventilation surface of the heat exchanger. It is a feature.

本発明によれば、例えば、データセンタ向け等の用途で用いられる空調機の室外機において、小型ファン使用時でも、室外機の放熱性能を維持しながら、大型ファン使用時と同等以下の消費電力にすることができる。 According to the present invention, for example, in an outdoor unit of an air conditioner used for applications such as for data centers, power consumption equal to or less than that when a large fan is used while maintaining the heat dissipation performance of the outdoor unit even when a small fan is used. Can be.

本発明の最小構成に係る空調機の室外機の断面図である。It is sectional drawing of the outdoor unit of the air conditioner which concerns on the minimum structure of this invention. 本発明の第１実施形態に係る空調機の室外機の正面から見た断面の概念図。The conceptual diagram of the cross section seen from the front of the outdoor unit of the air conditioner which concerns on 1st Embodiment of this invention. 空調機の室外機における、４０ｋＷ相当を放熱するための風量（１６０ｍ３／ｍｉｎ）を得るのに必要なファン電力を比較したグラフである。It is a graph comparing the fan power required to obtain the air volume (160 m 3 / min) for dissipating heat equivalent to 40 kW in the outdoor unit of an air conditioner.

本発明の最小構成例にかかる室外機について図１を参照して説明する。
ファン１と熱交換器２を備え、前記ファン１は前記熱交換器２の通風面２ａの近傍に複数台並べて設置されている。 The outdoor unit according to the minimum configuration example of the present invention will be described with reference to FIG.
A fan 1 and a heat exchanger 2 are provided, and a plurality of the fans 1 are installed side by side in the vicinity of the ventilation surface 2a of the heat exchanger 2.

上記構成によれば、複数のファン１によって、熱交換器２へ必要な風量を供給することができ、冷媒蒸気は熱交換器２を介して、ファン１により供給された外気へ放熱し、凝縮して冷媒液へ相変化する。この相変化に伴う放熱に必要な風量を複数のファン１によって供給することができ、単一のファンによって必要な風量を供給する場合よりファンの駆動電力を削減することができる。 According to the above configuration, the required air volume can be supplied to the heat exchanger 2 by the plurality of fans 1, and the refrigerant vapor is radiated to the outside air supplied by the fan 1 via the heat exchanger 2 and condensed. Then, the phase changes to the refrigerant liquid. The air volume required for heat dissipation due to this phase change can be supplied by a plurality of fans 1, and the driving power of the fan can be reduced as compared with the case where the required air volume is supplied by a single fan.

＜第１実施形態＞
本発明に係る第１実施形態について説明する。本実施形態に係る室外機の正面から見た断面の概念図を図２に示した。
本実施形態に係る室外機１０の構造は、筐体１００、熱交換器２００、小型ファン３００、導翼４００を備える。
前記筐体１００は、下部に吸気口１１０、上部に排気口１２０を備える。熱交換器２００は、筐体１００の内部へ斜めに設置する。図２にあっては、図中矢印Ａで示す吸入空気と図中矢印Ｂで示す排出空気との流れる方向に対して傾斜して配置されている。 <First Embodiment>
The first embodiment according to the present invention will be described. FIG. 2 shows a conceptual diagram of a cross section of the outdoor unit according to the present embodiment as viewed from the front.
The structure of the outdoor unit 10 according to the present embodiment includes a housing 100, a heat exchanger 200, a small fan 300, and a guide blade 400.
The housing 100 includes an intake port 110 at the lower part and an exhaust port 120 at the upper part. The heat exchanger 200 is installed diagonally inside the housing 100. In FIG. 2, the intake air indicated by the arrow A in the figure and the exhaust air indicated by the arrow B in the figure are arranged at an angle with respect to the flow direction.

小型ファン３００は、熱交換器２００の通風面（図１の符号２ａに対応する面）の近傍に、熱交換器２００の通風面と平行になるように設置する。小型ファン３００と熱交換器２００の通風面積が同等になるように、複数の小型ファン３００を並べる。
すなわち、前記小型ファン３００は、前記通風面の全部を覆って配置されている。なお小型ファン３００の外観（羽根の回転範囲を囲む枠の形状）は、一般に軸方向視で正方形状をなしているから、前記熱交換器２００の平面形状に応じて、図２の紙面方向のみならず、図２と紙面と直交する方向へも並べて行列状に複数個配置されている。また実施形態の前記小型ファン３００は、データセンター等で各種機器に供給される直流電源により作動する直流モータ（図示略）によって、それぞれ駆動されている。 The small fan 300 is installed near the ventilation surface of the heat exchanger 200 (the surface corresponding to the reference numeral 2a in FIG. 1) so as to be parallel to the ventilation surface of the heat exchanger 200. A plurality of small fans 300 are arranged so that the ventilation areas of the small fan 300 and the heat exchanger 200 are the same.
That is, the small fan 300 is arranged so as to cover the entire ventilation surface. Since the appearance of the small fan 300 (the shape of the frame surrounding the rotation range of the blades) is generally square in the axial direction, only the paper surface direction of FIG. 2 depends on the planar shape of the heat exchanger 200. Instead, a plurality of them are arranged in a matrix so as to be arranged in a direction orthogonal to FIG. 2 and the paper surface. Further, the small fan 300 of the embodiment is driven by a DC motor (not shown) operated by a DC power supply supplied to various devices in a data center or the like.

導翼４００は小型ファン３００の吸気側及び排気側に設置する。導翼４００は複数の小型ファン３００のそれぞれの吸気口１１０から排気口１２０までの通風抵抗が同じになるように、設置位置によって設置角度を変えることができる。すなわち前記導翼４００は、前記吸気口１１０と排気口１２０との間を空気が流れる方向（矢印Ａ、Ｂ方向）に対する角度を個々に調整することによって、前記通風抵抗の均一化を図ることができる構成を有する。 The guide blade 400 is installed on the intake side and the exhaust side of the small fan 300. The installation angle of the guide blade 400 can be changed depending on the installation position so that the ventilation resistance from the intake port 110 to the exhaust port 120 of each of the plurality of small fans 300 is the same. That is, the guide blade 400 can make the ventilation resistance uniform by individually adjusting the angle with respect to the direction in which air flows between the intake port 110 and the exhaust port 120 (arrows A and B directions). It has a structure that can be used.

また、隣り合う一の導翼４００（例えば図２の符号４００Ａ）と、他の導翼４００（例えば図２の符号４００Ｂ）とは、隣り合う二つのファン３００（例えば図２の符号３００Ａと３００Ｂ）を単位に配置されていて、これら二つのファン３００から空気が供給される範囲で通風抵抗を調整している。なお導翼４００の角度の制御に代えて、各ファン３００の回転数を個々に、あるいは、各熱交換器２００に対応する複数個単位で制御することにより、風量を調整しても良い。 Further, one adjacent blade 400 (for example, reference numeral 400A in FIG. 2) and another guide blade 400 (for example, reference numeral 400B in FIG. 2) are adjacent to two fans 300 (for example, reference numerals 300A and 300B in FIG. 2). ) Is arranged in units, and the ventilation resistance is adjusted within the range in which air is supplied from these two fans 300. Instead of controlling the angle of the guide blade 400, the air volume may be adjusted by controlling the rotation speed of each fan 300 individually or by controlling a plurality of units corresponding to each heat exchanger 200.

室外機１０の熱交換器２００や小型ファン３００や導翼４００は、個数、サイズ、形状等を限定するものではない。熱交換器２００と小型ファン３００が筐体１００の正面から見てＶ字状に設置しているが、Ｗ字状等に設置しても良い。小型ファン３００は熱交換器２００の排気側に設置しているが、吸気側に設置しても良い。導翼４００は小型ファン３００の吸気側及び排気側に設置しているが、どちらか片側だけでも良い。 The number, size, shape, and the like of the heat exchanger 200, the small fan 300, and the guide blade 400 of the outdoor unit 10 are not limited. Although the heat exchanger 200 and the small fan 300 are installed in a V shape when viewed from the front of the housing 100, they may be installed in a W shape or the like. Although the small fan 300 is installed on the exhaust side of the heat exchanger 200, it may be installed on the intake side. The guide blade 400 is installed on the intake side and the exhaust side of the small fan 300, but only one of them may be used.

なお、図示していないが、複数の前記熱交換器２００へ冷媒を供給し、排出する蒸気管や液管等の配管や、冷媒タンクなど、冷媒流路の構成部材を備えている。電源ケーブルや電子基板など、電子系の構成部材を備えている。また複数の熱交換器２００は、冷媒を供給する液管、排出する蒸気管の間に並列に接続されて、各々に熱媒体が供給、排出されるよう構成されている。
さらに、冷媒液を循環させるためのポンプや、冷媒蒸気を昇温するための圧縮機等を備えていても良い。 Although not shown, it includes pipes such as steam pipes and liquid pipes that supply and discharge the refrigerant to the plurality of heat exchangers 200, and components of the refrigerant flow path such as a refrigerant tank. It is equipped with electronic components such as power cables and electronic boards. Further, the plurality of heat exchangers 200 are connected in parallel between the liquid pipe for supplying the refrigerant and the steam pipe for discharging the refrigerant, and are configured to supply and discharge the heat medium to each of them.
Further, a pump for circulating the refrigerant liquid, a compressor for raising the temperature of the refrigerant vapor, and the like may be provided.

上記構成の室外機の動作を説明する。
室外機１０を動作させると、小型ファン３００が回転を始める。これにより、外気が筐体１００の下部へ設けられた吸気口１１０を通って、筐体１００の内部に吸入される。次に外気は導翼４００で形成された流路及び熱交換器２００を通過する。最後に外気は筐体１００の上部へ設けられた排気口１２０を通って、筐体１００の外部に排出される。 The operation of the outdoor unit having the above configuration will be described.
When the outdoor unit 10 is operated, the small fan 300 starts to rotate. As a result, the outside air is sucked into the inside of the housing 100 through the intake port 110 provided in the lower part of the housing 100. Next, the outside air passes through the flow path formed by the guide blade 400 and the heat exchanger 200. Finally, the outside air is discharged to the outside of the housing 100 through the exhaust port 120 provided at the top of the housing 100.

室内機で受熱した冷媒液が蒸発し、冷媒蒸気へ相変化する。冷媒蒸気は蒸気管を通って室内機から室外機１０へ移動し、筐体１００の内部へ設置された熱交換器２００に到達する。冷媒蒸気は熱交換器２００を介して外気へ放熱し、凝縮して冷媒液へ相変化する。冷媒液は液管を通って、室外機１０から室内機へ移動する。この様に冷媒の循環と相変化を利用して熱を移動することで、室内を冷却する。 The refrigerant liquid received by the indoor unit evaporates and undergoes a phase change to refrigerant vapor. The refrigerant vapor moves from the indoor unit to the outdoor unit 10 through the steam pipe and reaches the heat exchanger 200 installed inside the housing 100. The refrigerant vapor dissipates heat to the outside air via the heat exchanger 200, condenses and phase-changes into a refrigerant liquid. The refrigerant liquid moves from the outdoor unit 10 to the indoor unit through the liquid pipe. By transferring heat by utilizing the circulation and phase change of the refrigerant in this way, the room is cooled.

上記動作による効果について説明する。
小型ファン３００を熱交換器２００の通風面の近傍に、熱交換器２００の通風面と平行になるように設置することで、筐体１００の上部へ水平に設置する時よりもファン台数を増やしている。これにより、ファンの回転数を下げ、合計ファン電力を低減することができる。 The effect of the above operation will be described.
By installing the small fan 300 near the ventilation surface of the heat exchanger 200 so as to be parallel to the ventilation surface of the heat exchanger 200, the number of fans can be increased as compared with the case where the small fan 300 is installed horizontally on the upper part of the housing 100. ing. As a result, the rotation speed of the fan can be lowered and the total fan power can be reduced.

前記ファン３００の１台あたりの風量Ｖは、ファン回転数に比例し、合計風量（必要な風量の合計）が決まっている場合はファン台数Ｎに反比例する。また、ファン１台あたりの電力はファン回転数の約３乗に比例する。よって、式（１）に示すように、合計ファン電力Ｗはファン台数Ｎの約２乗に反比例する。
Ｗ ∝ Ｖ３×Ｎ ∝ Ｎ－３×Ｎ ∝ Ｎ－２ （１）
式（１）より、ファン台数Ｎを増やせば、合計ファン電力Ｗを低減できることが解る。 The air volume V per fan 300 is proportional to the fan rotation speed, and is inversely proportional to the number of fans N when the total air volume (total required air volume) is determined. Further, the electric power per fan is proportional to the fan rotation speed to the third power. Therefore, as shown in the equation (1), the total fan power W is inversely proportional to the square of the number of fans N.
W ∝ V 3 × N ∝ N -3 × N ∝ N -2 (1)
From equation (1), it can be seen that the total fan power W can be reduced by increasing the number of fans N.

上記第１実施形態にあっては、複数の小型のファン３００を熱交換器２００の通風面近傍に熱交換器２００の通風面と平行になるように設置し、小型ファン３００と熱交換器２００の通風面積が同等になるように並べている。これにより、一般的な室外機に採用されているように、筐体上部（排気口側）へファンを設置する時と比較して、小型ファンの設置台数を１．５倍にできる。 In the first embodiment, a plurality of small fans 300 are installed near the ventilation surface of the heat exchanger 200 so as to be parallel to the ventilation surface of the heat exchanger 200, and the small fan 300 and the heat exchanger 200 are installed. They are arranged so that the ventilation areas are the same. As a result, the number of small fans installed can be increased by 1.5 times as compared with the case where the fan is installed on the upper part (exhaust port side) of the housing as used in a general outdoor unit.

また、導翼４００の設置角度を設置位置によって変えることで、小型ファン３００のそれぞれの吸気口１１０から排気口１２０までの通風抵抗をできるだけ均一に（望ましくは同一に）している。これにより、熱交換器２００に供給する外気の風速を均一化し、放熱性能を向上させることで、合計ファン電力を低減できる。 Further, by changing the installation angle of the guide blade 400 depending on the installation position, the ventilation resistance from each intake port 110 to the exhaust port 120 of the small fan 300 is made as uniform (preferably the same) as possible. As a result, the total fan power can be reduced by making the wind speed of the outside air supplied to the heat exchanger 200 uniform and improving the heat dissipation performance.

図３は、室外機によって４０ｋＷ相当の熱量を放熱するための風量（１６０ｍ３／ｍｉｎ）を得るのに、ファン以外の筐体や熱交換器の寸法や配置、吸排気位置も底面吸気・天面排気とした条件で、必要なファン電力を比較した一例のグラフである。大型ファンを使用する場合、ファン電力は１．２ｋＷ（グラフ 横線背景）である。これに対し、小型ファンを筐体上部に並べて使用する場合、ファン電力は２．３ｋＷ（グラフに格子背景で示す）であり、従来の約２倍に増加している。
この結果、合計ファン電力Ｗを半減し、従来と同等の１．１ｋＷ（図３グラフに波線背景で示す）にしている。 In Fig. 3, the dimensions and arrangement of the housing other than the fan, the heat exchanger, and the intake / exhaust positions are also bottom intake / ceiling in order to obtain the air volume (160 m 3 / min) for dissipating heat equivalent to 40 kW by the outdoor unit. It is an example graph comparing the required fan power under the condition of surface exhaust. When using a large fan, the fan power is 1.2 kW (horizontal graph background). On the other hand, when the small fans are used side by side on the upper part of the housing, the fan power is 2.3 kW (shown by the grid background in the graph), which is about twice as much as the conventional one.
As a result, the total fan power W is halved to 1.1 kW (shown in the graph in FIG. 3 with a wavy line background), which is the same as the conventional one.

以上、本発明の実施形態について図面を参照して詳述したが、具体的な構成はこの実施形態に限られるものではなく、本発明の要旨を逸脱しない範囲の設計変更等も含まれる。 Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment and includes design changes and the like within a range not deviating from the gist of the present invention.

本発明は、小型ファン使用時のファン電力を低減できるので、特に、直流電源化した室外機に有効に適用することができる。 Since the present invention can reduce the fan power when using a small fan, it can be effectively applied to an outdoor unit using a DC power supply.

１ （小型）ファン
２ 熱交換器
２ａ 通風面
１０ 室外機
１００ 筐体
１１０ 吸気口
１２０ 排気口
２００ 熱交換器
３００、３００Ａ、３００Ｂ （小型）ファン
４００、４００Ａ、４００Ｂ 導翼 1 (Small) fan 2 Heat exchanger 2a Ventilation surface 10 Outdoor unit 100 Housing 110 Intake port 120 Exhaust port 200 Heat exchanger 300, 300A, 300B (Small) Fan 400, 400A, 400B Guide blade

Claims (7)

ファンと熱交換器を備え、前記ファンは前記熱交換器の通風面の近傍に複数台並べて設置されていることを特徴とする空調機の室外機。 An outdoor unit of an air conditioner including a fan and a heat exchanger, wherein a plurality of the fans are installed side by side in the vicinity of the ventilation surface of the heat exchanger. 前記ファン及び前記熱交換器は筐体正面から見て斜めに設置されており、前記ファンと前記熱交換器の通風面積が同等になるように、前記熱交換器の通風面の近傍に前記ファンが並べられていることを特徴とする請求項１記載の空調機の室外機。 The fan and the heat exchanger are installed diagonally when viewed from the front of the housing, and the fan is located near the ventilation surface of the heat exchanger so that the ventilation areas of the fan and the heat exchanger are equal to each other. The outdoor unit of the air conditioner according to claim 1, wherein the air conditioners are arranged side by side. さらに筐体内の風向きを変える導翼を備え、複数台の前記ファンのそれぞれの室外機の吸気口から排気口までの通風抵抗が同じになるように、前記導翼の設置位置によって設置角度を変えていることを特徴とする請求項１記載の空調機の室外機。 Furthermore, it is equipped with a guide blade that changes the wind direction inside the housing, and the installation angle is changed depending on the installation position of the guide blade so that the ventilation resistance from the intake port to the exhaust port of each of the outdoor units of the plurality of fans is the same. The outdoor unit of the air conditioner according to claim 1. ファン電力の合計が許容値以下になる様に、ファンの設置台数を決めていることを特徴とする請求項１記載の空調機の室外機。 The outdoor unit of the air conditioner according to claim 1, wherein the number of installed fans is determined so that the total fan power is equal to or less than the allowable value. 前記ファンは直流電源で駆動することを特徴とする請求項１記載の空調機の室外機。 The outdoor unit of the air conditioner according to claim 1, wherein the fan is driven by a DC power source. 冷却対象空気と冷媒とを熱交換する熱交換器と、
該熱交換器における前記冷却対象空気の通過方向と交差する通風面に沿って配置された複数のファンと
を備えた請求項１～５のいずれか一項に記載の空調機の室外機。 A heat exchanger that exchanges heat between the air to be cooled and the refrigerant,
The outdoor unit of an air conditioner according to any one of claims 1 to 5, further comprising a plurality of fans arranged along a ventilation surface intersecting the passing direction of the air to be cooled in the heat exchanger. 複数の前記ファンにより、前記熱交換器の前記通風面の全部を覆った、
請求項６に記載の空調機の室外機。 A plurality of the fans covered the entire ventilation surface of the heat exchanger.
The outdoor unit of the air conditioner according to claim 6.
JP2020152354A 2020-09-10 2020-09-10 Outdoor machine of air conditioner Pending JP2022046351A (en)

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