WO2012133392A1 - Heat source unit - Google Patents

Heat source unit Download PDF

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Publication number
WO2012133392A1
WO2012133392A1 PCT/JP2012/057908 JP2012057908W WO2012133392A1 WO 2012133392 A1 WO2012133392 A1 WO 2012133392A1 JP 2012057908 W JP2012057908 W JP 2012057908W WO 2012133392 A1 WO2012133392 A1 WO 2012133392A1
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WO
WIPO (PCT)
Prior art keywords
fans
outdoor
fan
heat source
source unit
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PCT/JP2012/057908
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French (fr)
Japanese (ja)
Inventor
崇史 畠田
諭 太田
克浩 清水
Original Assignee
東芝キヤリア株式会社
Priority date (The priority date 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 date listed.)
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Application filed by 東芝キヤリア株式会社 filed Critical 東芝キヤリア株式会社
Priority to CN201280015165.5A priority Critical patent/CN103443551B/en
Publication of WO2012133392A1 publication Critical patent/WO2012133392A1/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
    • 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
    • F24F1/40—Vibration or noise prevention at 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
    • 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
    • F24F1/46—Component arrangements in separate outdoor units
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
    • F24F1/54—Inlet and outlet arranged on opposite sides

Definitions

  • Embodiments of the present invention relate to a heat source unit.
  • an outdoor unit of an air conditioner is known as an example of a heat source unit.
  • a rotating shaft of a blower that circulates heat exchange air through a heat exchanger is set in a horizontal direction.
  • This type of laterally blown outdoor unit is divided into, for example, two spaces in the horizontal direction by a partition plate extending in the vertical direction in the unit housing, and a heat exchanger and a blower are disposed in one of the spaces.
  • the other space is configured as a machine room in which the compressor is arranged.
  • the present invention has been made in consideration of such circumstances, and its purpose is to optimize the relationship between the number of installed fans and the diameter of the propeller fan and the height of the unit housing, thereby providing input to the fan. Another object is to provide a heat source unit that can reduce noise.
  • the inside of the unit housing is partitioned by a partition plate in the horizontal direction, and one space thereof is a heat exchange chamber in which a heat exchanger and a blower are arranged, and the other space is a machine room in which a compressor is arranged.
  • the heat source unit of the present embodiment it is possible to optimize the relationship between the number of fans installed, the diameter of the propeller fan, and the height of the unit housing, and the fan input and noise can be reduced.
  • the plane schematic diagram of the outdoor unit shown in FIG. The side view which mainly shows the support structure of the three propeller fans shown in FIG.
  • FIG. 2 is a schematic plan view of the outdoor unit of the air conditioner according to the first embodiment.
  • an outdoor unit R of an air conditioner that is an example of a heat source unit includes an outdoor unit body 1 made of sheet metal that is an example of a unit housing.
  • the outdoor unit main body 1 has a horizontally long bottom plate 1a, a front plate 1b standing on the front side of the bottom plate 1a, a left plate 1c standing on the left side of the bottom plate 1a in the drawing, and standing on the right side. It is comprised from the right board 1d, the rear board 1e standingly arranged by the back side, and the top plate (illustration omitted) provided over the front, right and left, and the upper end of rear board 1b, 1c, 1d, 1e.
  • the front plate 1b is formed with an air outlet 2 in which a bell mouth (not shown) is formed, and a fan guard (not shown) is fitted into the air outlet 2.
  • the left side plate 1c is formed with a plurality of reinforcing steps, and the right side plate 1d is provided with an opening through which piping such as a refrigerant pipe is inserted, and this opening is covered with a packed valve cover.
  • the left side plate 1c and the rear plate 1e are provided with crosspieces, and suction ports 1c1 and 1e1 are formed between the crosspieces, and the outside air enters the outdoor unit main body 1 as indicated by white arrows in FIG. It is configured to inhale.
  • a top plate consists of a flat plate which has the shoulder part bent along the periphery.
  • the interior of the outdoor unit main body 1 configured in this way is divided into two chambers, a heat exchange chamber 4A and a machine chamber 4B, by a partition plate 3 made of solid sheet metal that partitions the inside of the unit housing in the horizontal direction.
  • the heat exchange chamber 4A has a larger volume than the machine room 4B.
  • an L-shaped outdoor heat exchanger 5 is disposed on the bottom plate 1a at a position close to the rear plate 1e in parallel with the rear plate 1e and the left side plate 1c. That is, the outdoor heat exchanger 5 is formed in an L shape in plan view. The upper end of the outdoor heat exchanger 5 is close to the top plate.
  • an outdoor blower 6 and a blower support member 7 that supports the outdoor blower 6 are disposed therein.
  • the outdoor blower 6 is disposed so as to be surrounded by the outdoor heat exchanger 5, the partition plate 3, the left side plate 1c, and the front plate 1b, and includes a fan motor 6M and a propeller fan 6F attached to a rotation shaft of the fan motor 6M. Have.
  • the blower support member 7 has a pair of left and right inverted L-shaped columns 7a and 7b. As shown in FIG. 3, these columns 7 a and 7 b are bent at the tip end portions (right end portions in FIG. 3) of the upper end portions 7 a 1 and 7 b 1 in a bowl shape, and the rear end corners on the upper end portion of the outdoor heat exchanger 5. Is engaged and fixed. For example, three pairs of horizontal members 7c, 7c, 7c installed in the lateral direction are arranged in parallel in the vertical direction (direction in the installed state) on the columns 7a, 7b, and these three pairs of horizontal members 7c are arranged in parallel. , 7c, 7c, respectively, three fan motors 6M (6MA, 6MB, 6MC) are fixed. The lower ends of the columns 7a and 7b are erected on the support base 7d, and the support base 7d is fixed on the bottom plate 1a of the outdoor unit body 1.
  • the fan motor 6M (6MA, 6MB, 6MC) has a variable rotation speed, and the propeller fan 6F (6FA, 6FB, 6FC) sucks heat exchange air from the rear side in the axial direction to the outside air from the air outlet 2 on the front side. It blows out air. That is, the rear plate 1e side and the left side plate 1c side of the opening structure are the outside air suction side, and the outlet 2 of the front plate 1b is the outlet side.
  • the bell mouth guides the outside air at the air outlet 2.
  • the machine room 4B accommodates the compressor 8 and a gas-liquid separator (not shown) and the pipes including a four-way switching valve connected to the compressor 8 and the gas-liquid separator.
  • the compressor 8 and the like are connected to an outdoor heat exchanger 5 in the heat exchange chamber 4A, an indoor heat exchanger accommodated in an indoor unit (not shown), etc. via a refrigerant pipe (not shown) to constitute a refrigeration cycle.
  • the outdoor unit body 1 has three outdoor fans 6 (6A, 6B, 6A, 6B, 6C). These three outdoor fans 6A, 6B, and 6C are fixed and supported at substantially equal intervals in the vertical direction on the fan support member 7 shown in FIG. In addition, even when there are four or more outdoor fans, accurate positioning can be easily performed by fixing and supporting them on the same fan support member extending in the vertical direction.
  • These outdoor fans 6A to 6C are configured to satisfy the following expressions (1) and (2).
  • the outdoor unit body 1 The distance between the upper end and the lower end of the propeller fan 6F is preferably 50 mm or more, and even when a plurality of outdoor fans are installed in the vertical direction, the distance between the outer circumferences of the adjacent propeller fans 6F and 6F Is based on new knowledge that has been found and accumulated as a result of our many years of research and development that 50 mm or more is preferable for improving blowing efficiency and reducing blowing noise.
  • the outdoor unit body 1 has a height H of 1500 mm and three outdoor fans 6A to 6C (propeller fans 6FA, 6FB, 6FC) are arranged in parallel in the height direction of the outdoor unit body 1, the above ( It is preferable that the diameter D of the propeller fans 6FA to 6FC is set to 372 mm or more according to the formulas 1) and (2).
  • FIG. 5 is a graph showing the relationship between ⁇ and input when a plurality of outdoor fans are installed in the outdoor unit main body 1 and operated so as to blow the same air volume.
  • FIG. 5 shows the relative relationship when ⁇ when calculated by the above equation (1) is on the horizontal axis and the total electric input (power consumption) W of the fan motor 6M of each outdoor fan is on the vertical axis.
  • curve A shows the characteristics when two outdoor fans are installed in the outdoor unit body 1 (2 fans)
  • curve B shows the characteristics when three outdoor fans are installed (3 fans)
  • Curve C shows the characteristics when four outdoor fans are installed (4 fans). From the above equation (1), the diameter of propeller fan 6F decreases as the value of ⁇ increases.
  • ⁇ satisfying the above expressions (1) and (2) is 2.0 ⁇ ⁇ ⁇ 2.5 when there are two outdoor fans (2 fans) and when there are three outdoor fans (3 fans). Is 3.0 ⁇ ⁇ ⁇ 3.5.
  • an E region indicated by a broken line is a region where ⁇ exceeds 2.5 in the case of two fans and does not satisfy the above expression (2).
  • the input can be made smaller in the case of 3 fans and ⁇ of 3.0 than in the E region in which ⁇ exceeds 2.5 with 2 fans.
  • the diameter D of the propeller fan 6F when ⁇ is 3.0 with 3 fans is 433 mm.
  • the input can be made smaller in the case of 4 fans and ⁇ of 4.0 than in the case of 3 fans and ⁇ exceeding 3.5.
  • FIG. 6 mainly shows the relationship between ⁇ and noise value (dB (decibel)) when the 2 fans, 3 fans, and 4 fans are operated to blow with the same air volume.
  • the F curve indicates the blowing noise characteristics in the case of two fans
  • the G region indicates a region that does not satisfy the above expression (2) with two fans, that is, a region where ⁇ exceeds 2.5.
  • the H curve indicates the blowing noise characteristics in the case of 3 fans
  • the I curve indicates the blowing noise characteristics in the case of 4 fans.
  • the noise value when ⁇ is 2.5 with 2 fans, the noise value is about 62 dB, whereas when the ⁇ is over 2.5, for example 2.8, the noise value is about It becomes about 66 dB. On the other hand, when ⁇ is 3.0 with three fans, the noise value is about 62 dB which is smaller than about 66 dB.
  • the noise value can be made smaller in the case of 3 fans and ⁇ of 3.0 than in the E region where ⁇ exceeds 2.5 with 2 fans.
  • the noise value can be made smaller in the case of 4 fans and ⁇ of 4.0 than in the case of ⁇ of more than 3.5 with 3 fans.
  • each outdoor fan 6A, 6B, 6C can be easily and accurately positioned, The intervals between the outdoor fans 6A, 6B, and 6C can be made uniform to further reduce noise.
  • R outdoor unit (heat source unit), 1 ... outdoor unit body (unit housing), 3 ... partition plate, 4A ... heat exchange chamber, 4B ... machine room, 5 ... outdoor heat exchanger, 6 ... outdoor blower, 6F ... Propeller fan, 6M ... fan motor, 7 ... blower support member, 8 ... compressor.

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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)

Abstract

A main body of an outdoor compressor unit is horizontally divided by a divider, wherein one of the spaces is a heat exchange room with a heat exchanger and air blowers installed within, and the other space is a machine room with a compressor installed within. A plurality of air blowers are installed extending in the vertical direction in the heat exchange room. The air blower is formed of a fan motor and propeller fans (6) fitted to an axis of rotation of the fan motor. The relationship v between the number of installed units n of the propeller fans, the height H (mm) of the main body of an outdoor compressor and the diameter D (mm) of the propeller fans is configured so as to satisfy Formula (1) and Formula (2). The aforementioned configuration reduces the input power and the noise of the air blowers. [Mathematical Expression 1] v = (H - 50 × (n + 1 ) / D …… (1) n ≤ v ≤ ( n + 0.5) …… (2)

Description

熱源ユニットHeat source unit
　本発明の実施形態は熱源ユニットに関する。 Embodiments of the present invention relate to a heat source unit.
　一般に、熱源ユニットの一例としては空気調和機の室外機が知られており、この種の空気調和機の室外機としては、熱交換器に熱交換空気を流通させる送風機の回転軸を水平方向に配置した横吹き型がある。この種の横吹き型の室外機は、ユニット筐体内を上下方向に延びる仕切板により、水平方向に、例えば２つの空間に仕切り、その一方の空間を熱交換器および送風機を配置する熱交換室に構成し、他方の空間を圧縮機を配置する機械室として構成している。 In general, an outdoor unit of an air conditioner is known as an example of a heat source unit. As an outdoor unit of this type of air conditioner, a rotating shaft of a blower that circulates heat exchange air through a heat exchanger is set in a horizontal direction. There is a horizontal blow type. This type of laterally blown outdoor unit is divided into, for example, two spaces in the horizontal direction by a partition plate extending in the vertical direction in the unit housing, and a heat exchanger and a blower are disposed in one of the spaces. The other space is configured as a machine room in which the compressor is arranged.
　しかしながら、この種の従来の横吹き型空気調和機用室外機では、熱交換器に熱交換空気を流通させる送風機の設置台数と、そのプロペラファンの直径およびユニット筐体の高さとの関係の最適化が図られていないために、この関係の最適化にする事による送風機の消費電力や送風騒音の低減が十分に図られていないという課題がある。 However, in this type of conventional outdoor unit for horizontal blow type air conditioners, the optimum relationship between the number of fans installed to distribute heat exchange air to the heat exchanger, the diameter of the propeller fan, and the height of the unit housing Therefore, there is a problem that the power consumption and blowing noise of the blower are not sufficiently reduced by optimizing this relationship.
　本発明は、このような事情を考慮してなされたもので、その目的は、送風機の設置台数と、そのプロペラファンの直径およびユニット筐体高さとの関係の最適化を図ることにより、送風機の入力と騒音の低減を図ることができる熱源ユニットを提供することにある。 The present invention has been made in consideration of such circumstances, and its purpose is to optimize the relationship between the number of installed fans and the diameter of the propeller fan and the height of the unit housing, thereby providing input to the fan. Another object is to provide a heat source unit that can reduce noise.
　本実施形態は、ユニット筐体内を水平方向に仕切板で仕切り、その一方の空間を熱交換器および送風機を配置する熱交換室とし、他方の空間を圧縮機を配置する機械室とするとともに、前記送風機を前記熱交換室に上下方向に複数台並べて配置した熱源ユニットであって、前記送風機は、ファンモータと、このファンモータの回転軸に嵌着されるプロペラファンとからなり、前記プロペラファンの設置数ｎと、前記ユニット筐体の高さＨ（ｍｍ）および前記プロペラファンの直径Ｄ（ｍｍ）との関係νが次の（１）式と（２）式を満たすように構成されていることを特徴とする。 In the present embodiment, the inside of the unit housing is partitioned by a partition plate in the horizontal direction, and one space thereof is a heat exchange chamber in which a heat exchanger and a blower are arranged, and the other space is a machine room in which a compressor is arranged. A heat source unit in which a plurality of the blowers are arranged in the heat exchange chamber in the vertical direction, and the blower includes a fan motor and a propeller fan fitted to a rotation shaft of the fan motor, and the propeller fan The relationship ν between the number n of installations, the height H (mm) of the unit casing and the diameter D (mm) of the propeller fan satisfies the following formulas (1) and (2): It is characterized by being.
　　［数１］
　　ν＝（Ｈ－５０×（ｎ＋１））／Ｄ　　　……（１）
　　ｎ≦ν≦（ｎ＋０．５）　　　　　　　　……（２）
　また、前記送風機は、前記熱交換器に対向して設けられ、上下方向に延びる同一の支持部材に固定することが好ましい。 [Equation 1]
ν = (H−50 × (n + 1)) / D (1)
n ≦ ν ≦ (n + 0.5) (2)
Moreover, it is preferable that the said air blower is fixed to the same supporting member provided facing the said heat exchanger, and extended in an up-down direction.
　本実施形態の熱源ユニットによると、送風機の設置台数と、そのプロペラファンの直径およびユニット筐体高さとの関係の最適化を図ることが可能となり、送風機の入力と騒音の低減を図ることができる。 According to the heat source unit of the present embodiment, it is possible to optimize the relationship between the number of fans installed, the diameter of the propeller fan, and the height of the unit housing, and the fan input and noise can be reduced.
第１の実施形態に係る空気調和機の室外機本体（ユニット筐体）とプロペラファン（本実施形態では３台）の正面模式図。The front schematic diagram of the outdoor unit main body (unit housing | casing) and propeller fan (this unit 3 units) of the air conditioner which concerns on 1st Embodiment. 図１で示す室外機の平面模式図。The plane schematic diagram of the outdoor unit shown in FIG. 図１で示す３台のプロペラファンの支持構造を主に示す側面図。The side view which mainly shows the support structure of the three propeller fans shown in FIG. 第２の実施形態に係る空気調和機の室外機本体（ユニット筐体）とプロペラファン（本実施形態では２台）を示す模式図。The schematic diagram which shows the outdoor unit main body (unit housing | casing) and the propeller fan (2 units | sets in this embodiment) of the air conditioner which concern on 2nd Embodiment. 第１，第２の実施形態の節電効果を示すグラフ。The graph which shows the power saving effect of 1st, 2nd embodiment. 第１，第２の実施形態の低減効果を示すグラフ。The graph which shows the reduction effect of 1st, 2nd embodiment.
　以下、本発明の実施形態を図面に基づいて説明する。なお、複数の図面中、同一または相当部分には同一符号を付している。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or an equivalent part in several drawing.
　図２は第１の実施形態に係る空気調和機の室外機の平面模式図である。この図２に示すように熱源ユニットの一例である空気調和機の室外機Ｒは、ユニット筐体の一例である板金製の室外機本体１を有する。 FIG. 2 is a schematic plan view of the outdoor unit of the air conditioner according to the first embodiment. As shown in FIG. 2, an outdoor unit R of an air conditioner that is an example of a heat source unit includes an outdoor unit body 1 made of sheet metal that is an example of a unit housing.
　室外機本体１は、横長矩形状の底板１ａ、底板１ａの前面側に立設される前板１ｂ、底板１ａの図中左側部に立設される左側板１ｃ、右側部に立設される右側板１ｄ、背面側に立設される後板１ｅ、およびこれら前、左右、後板１ｂ，１ｃ，１ｄ，１ｅの上端に亘って設けられる天板（図示省略）とから構成される。 The outdoor unit main body 1 has a horizontally long bottom plate 1a, a front plate 1b standing on the front side of the bottom plate 1a, a left plate 1c standing on the left side of the bottom plate 1a in the drawing, and standing on the right side. It is comprised from the right board 1d, the rear board 1e standingly arranged by the back side, and the top plate (illustration omitted) provided over the front, right and left, and the upper end of rear board 1b, 1c, 1d, 1e.
　前板１ｂには、ベルマウス（図示省略）が形成される吹出口２が形成され、この吹出口２には図示省略のファンガードが嵌め込まれる。左側板１ｃには複数の補強用段部が形成され、右側板１ｄは冷媒配管等の配管類を挿通させるための開口部を備えており、この開口部はパックドバルブカバーによって覆われている。 The front plate 1b is formed with an air outlet 2 in which a bell mouth (not shown) is formed, and a fan guard (not shown) is fitted into the air outlet 2. The left side plate 1c is formed with a plurality of reinforcing steps, and the right side plate 1d is provided with an opening through which piping such as a refrigerant pipe is inserted, and this opening is covered with a packed valve cover.
　左側板１ｃと後板１ｅには桟部が設けられ、これら桟部相互間には吸込口１ｃ１，１ｅ１を形成し、図２中白抜き矢印に示すように、外気を室外機本体１内に吸い込むように構成されている。天板は、周縁に沿って折曲加工された肩部を有する平板からなる。このようにして構成される室外機本体１内部は、ユニット筐体内を水平方向に仕切る固体板金製の仕切板３によって熱交換室４Ａと機械室４Ｂの左右２室に区分される。熱交換室４Ａは機械室４Ｂよりも大きい容積を有する。 The left side plate 1c and the rear plate 1e are provided with crosspieces, and suction ports 1c1 and 1e1 are formed between the crosspieces, and the outside air enters the outdoor unit main body 1 as indicated by white arrows in FIG. It is configured to inhale. A top plate consists of a flat plate which has the shoulder part bent along the periphery. The interior of the outdoor unit main body 1 configured in this way is divided into two chambers, a heat exchange chamber 4A and a machine chamber 4B, by a partition plate 3 made of solid sheet metal that partitions the inside of the unit housing in the horizontal direction. The heat exchange chamber 4A has a larger volume than the machine room 4B.
　熱交換室４Ａには、後板１ｅに近接する位置の底板１ａ上に、後板１ｅおよび左側板１ｃと並行してＬ形の室外熱交換器５が配置される。すなわち、室外熱交換器５は平面視でＬ字状に形成されている。室外熱交換器５の上端は天板に近接している。 In the heat exchange chamber 4A, an L-shaped outdoor heat exchanger 5 is disposed on the bottom plate 1a at a position close to the rear plate 1e in parallel with the rear plate 1e and the left side plate 1c. That is, the outdoor heat exchanger 5 is formed in an L shape in plan view. The upper end of the outdoor heat exchanger 5 is close to the top plate.
　さらに、熱交換室４Ａには、その内部に、室外送風機６と、この室外送風機６を支持する送風機支持部材７を配設している。室外送風機６は、室外熱交換器５と仕切板３と左側板１ｃおよび前板１ｂとにより囲まれて配置され、ファンモータ６Ｍと、このファンモータ６Ｍの回転軸に取り付けられるプロペラファン６Ｆとを有する。 Furthermore, in the heat exchange chamber 4A, an outdoor blower 6 and a blower support member 7 that supports the outdoor blower 6 are disposed therein. The outdoor blower 6 is disposed so as to be surrounded by the outdoor heat exchanger 5, the partition plate 3, the left side plate 1c, and the front plate 1b, and includes a fan motor 6M and a propeller fan 6F attached to a rotation shaft of the fan motor 6M. Have.
　送風機支持部材７は、左右一対の逆Ｌ字状の支柱７ａ，７ｂを有する。図３に示すように、これら支柱７ａ，７ｂは、その上端部７ａ１，７ｂ１の先端部（図３では右端部）を鉤状に折曲し、室外熱交換器５の上端部背面側角部に係合され、固定される。支柱７ａ，７ｂには、その横方向に架設された例えば３対の横架部材７ｃ，７ｃ，７ｃが上下方向(設置状態における方向)に３段並設され、これら３対の横架部材７ｃ，７ｃ，７ｃにより、３台のファンモータ６Ｍ（６ＭＡ，６ＭＢ，６ＭＣ）をそれぞれ固定している。支柱７ａ，７ｂの下端部は支持台７ｄに立設され、支持台７ｄは室外機本体１の底板１ａ上に固定される。 The blower support member 7 has a pair of left and right inverted L- shaped columns 7a and 7b. As shown in FIG. 3, these columns 7 a and 7 b are bent at the tip end portions (right end portions in FIG. 3) of the upper end portions 7 a 1 and 7 b 1 in a bowl shape, and the rear end corners on the upper end portion of the outdoor heat exchanger 5. Is engaged and fixed. For example, three pairs of horizontal members 7c, 7c, 7c installed in the lateral direction are arranged in parallel in the vertical direction (direction in the installed state) on the columns 7a, 7b, and these three pairs of horizontal members 7c are arranged in parallel. , 7c, 7c, respectively, three fan motors 6M (6MA, 6MB, 6MC) are fixed. The lower ends of the columns 7a and 7b are erected on the support base 7d, and the support base 7d is fixed on the bottom plate 1a of the outdoor unit body 1.
　ファンモータ６Ｍ（６ＭＡ，６ＭＢ，６ＭＣ）は回転速度を可変としており、プロペラファン６Ｆ（６ＦＡ, ６ＦＢ, ６ＦＣ)は軸方向の背面側から熱交換空気を吸い込んで前面側の吹出口２から外気へ吹き出す送風作用をなす。すなわち、開口構造の後板１ｅ側、左側板１ｃ側が外気の吸込側となり、前板１ｂの吹出口２が吹出側となる。ベルマウスは、吹出口２において外気吹出を案内する。 The fan motor 6M (6MA, 6MB, 6MC) has a variable rotation speed, and the propeller fan 6F (6FA, 6FB, 6FC) sucks heat exchange air from the rear side in the axial direction to the outside air from the air outlet 2 on the front side. It blows out air. That is, the rear plate 1e side and the left side plate 1c side of the opening structure are the outside air suction side, and the outlet 2 of the front plate 1b is the outlet side. The bell mouth guides the outside air at the air outlet 2.
　機械室４Ｂには、圧縮機８と図示省略の気液分離器及びこれら圧縮機８と気液分離器に接続される四方切換弁等を備えた前記配管類が収容される。圧縮機８等は、熱交換室４Ａ内の室外熱交換器５や、図示しない室内機に収容される室内熱交換器等と、図示しない冷媒配管を介して接続されて冷凍サイクルを構成する。 The machine room 4B accommodates the compressor 8 and a gas-liquid separator (not shown) and the pipes including a four-way switching valve connected to the compressor 8 and the gas-liquid separator. The compressor 8 and the like are connected to an outdoor heat exchanger 5 in the heat exchange chamber 4A, an indoor heat exchanger accommodated in an indoor unit (not shown), etc. via a refrigerant pipe (not shown) to constitute a refrigeration cycle.
　そして、図１，図３に示すように、室外機本体１は、その高さ（ユニット筐体の高さ）Ｈ方向に所要の間隔ｇを置いて３台の室外送風機６（６Ａ，６Ｂ，６Ｃ）を並設している。これら３台の室外送風機６Ａ，６Ｂ，６Ｃは図３で示す送風機支持部材７に、上下方向にほぼ等間隔に固定支持されている。なお、室外送風機が４台以上の場合にも、上下方向に延びる同一の送風機支持部材に固定支持することにより、容易に正確な位置決めができる。 As shown in FIG. 1 and FIG. 3, the outdoor unit body 1 has three outdoor fans 6 (6A, 6B, 6A, 6B, 6C). These three outdoor fans 6A, 6B, and 6C are fixed and supported at substantially equal intervals in the vertical direction on the fan support member 7 shown in FIG. In addition, even when there are four or more outdoor fans, accurate positioning can be easily performed by fixing and supporting them on the same fan support member extending in the vertical direction.
　これら室外送風機６Ａ～６Ｃは、次の（１）式、（２）式を満たすように構成されている。 These outdoor fans 6A to 6C are configured to satisfy the following expressions (1) and (2).
　　［数２］
　　ν＝（Ｈ－５０×（ｎ＋１））／Ｄ　　　……（１）
　　ｎ≦ν≦（ｎ＋０．５）　　　　　　　　……（２）
　　ここで、ｎ：室外送風機６の設置台数
　　　　　　Ｈ：室外機本体１の高さ（ｍｍ）
　　　　　　Ｄ：プロペラファン６Ｆの直径（ｍｍ）
　なお、上記（１）式中の「５０」は、本発明者らの長年の研究開発の結果に基づく値であり、特に、室外送風機の設置台数が１台である場合に、室外機本体１の上端および下端からプロペラファン６Ｆの外周までの各々の間隔は、５０ｍｍ以上が好ましいことと、室外送風機を上下方向に複数台設置する場合にも、隣り合うプロペラファン６Ｆ，６Ｆの外周同士の間隔は、送風効率向上と送風騒音低減のために５０ｍｍ以上が好ましいことを、本発明者らの長年の研究開発の結果見出され、蓄積されてきた新しい知見に基づく。 [Equation 2]
ν = (H−50 × (n + 1)) / D (1)
n ≦ ν ≦ (n + 0.5) (2)
Here, n: Number of outdoor fans 6 installed H: Height of outdoor unit body 1 (mm)
D: Diameter of propeller fan 6F (mm)
In addition, “50” in the above formula (1) is a value based on the results of many years of research and development by the present inventors. In particular, when the number of outdoor fans installed is one, the outdoor unit body 1 The distance between the upper end and the lower end of the propeller fan 6F is preferably 50 mm or more, and even when a plurality of outdoor fans are installed in the vertical direction, the distance between the outer circumferences of the adjacent propeller fans 6F and 6F Is based on new knowledge that has been found and accumulated as a result of our many years of research and development that 50 mm or more is preferable for improving blowing efficiency and reducing blowing noise.
　したがって、例えば室外機本体１の高さＨが１５００ｍｍ、３台の室外送風機６Ａ～６Ｃ（プロペラファン６ＦＡ、６ＦＢ、６ＦＣ）を室外機本体１の高さ方向に並設する場合には、上記（１）、（２）式により、プロペラファン６ＦＡ～６ＦＣの直径Ｄを３７２ｍｍ以上にすることが好ましい。 Therefore, for example, when the outdoor unit body 1 has a height H of 1500 mm and three outdoor fans 6A to 6C (propeller fans 6FA, 6FB, 6FC) are arranged in parallel in the height direction of the outdoor unit body 1, the above ( It is preferable that the diameter D of the propeller fans 6FA to 6FC is set to 372 mm or more according to the formulas 1) and (2).
　また、図４に示すように２台の室外送風機６Ｄ、６Ｅ、すなわち、プロペラファン６ＦＤ、６ＦＥを室外機本体１の高さＨ方向に並設する場合には、これらプロペラファン６ＦＤ、６ＦＥの直径Ｄを５４０ｍｍ以上にすることが好ましい。 As shown in FIG. 4, when two outdoor fans 6D and 6E, that is, propeller fans 6FD and 6FE are arranged side by side in the height H direction of the outdoor unit body 1, the diameters of these propeller fans 6FD and 6FE are arranged. It is preferable that D is 540 mm or more.
　図５は、室外機本体１に、室外送風機を複数台設置し、それぞれ同一風量を送風するように運転したときのνと入力との関係を示すグラフである。 FIG. 5 is a graph showing the relationship between ν and input when a plurality of outdoor fans are installed in the outdoor unit main body 1 and operated so as to blow the same air volume.
　すなわち、図５は、上記（１）式で算出したときのνを横軸にし、各室外送風機のファンモータ６Ｍの合計の電気入力（消費電力）Ｗを縦軸にしたときの相対関係を示し、図中、曲線Ａは、室外機本体１に、室外送風機を２台設置した場合（２ファン）の特性を示し、曲線Ｂは、室外送風機を３台設置した場合（３ファン）の特性を示し、曲線Ｃは、室外送風機を４台設置した場合（４ファン）の特性を示している。上記（１）式から、νの数値が大きくなるに従ってプロペラファン６Ｆの直径が小さくなる。 That is, FIG. 5 shows the relative relationship when ν when calculated by the above equation (1) is on the horizontal axis and the total electric input (power consumption) W of the fan motor 6M of each outdoor fan is on the vertical axis. In the figure, curve A shows the characteristics when two outdoor fans are installed in the outdoor unit body 1 (2 fans), and curve B shows the characteristics when three outdoor fans are installed (3 fans). Curve C shows the characteristics when four outdoor fans are installed (4 fans). From the above equation (1), the diameter of propeller fan 6F decreases as the value of ν increases.
　上記（１）式と（２）式を満たすνは、室外送風機が２台の場合（２ファン）が２．０≦ν≦２．５であり、室外送風機が３台の場合（３ファン）は、３．０≦ν≦３．５である。また、図５中、破線で示すＥ領域は、２ファンの場合において、νが２．５を超える場合であって、上記（２）式を満たさない領域を示す。 Ν satisfying the above expressions (1) and (2) is 2.0 ≦ ν ≦ 2.5 when there are two outdoor fans (2 fans) and when there are three outdoor fans (3 fans). Is 3.0 ≦ ν ≦ 3.5. In FIG. 5, an E region indicated by a broken line is a region where ν exceeds 2.5 in the case of two fans and does not satisfy the above expression (2).
　図５より、例えば２ファンでνが２．５の場合は、入力が約２９０Ｗ程度であるのに対し、νが２．５を超えるＤ領域の例えば２．８の場合は入力が約３７０Ｗ程度になる。一方、３ファンでνが３．０の場合は、入力が３７０Ｗより小さい約２９０Ｗ程度である。 From FIG. 5, for example, when 2 fans and ν is 2.5, the input is about 290 W, whereas when the ν is more than 2.5, for example 2.8, the input is about 370 W. become. On the other hand, when ν is 3.0 with 3 fans, the input is about 290 W, which is smaller than 370 W.
　したがって、２ファンでνが２．５を超えるＥ領域よりも、３ファンでνが３．０の場合の方が入力を小さくできる。 Therefore, the input can be made smaller in the case of 3 fans and ν of 3.0 than in the E region in which ν exceeds 2.5 with 2 fans.
　例えば、上記（１）式より、室外機本体１の高さＨが１５００ｍｍの場合、２ファン（ｎ＝２）でνが２．５のときのプロペラファン６Ｆの直径Ｄは、５４０ｍｍである。したがって、室外機本体１の横幅の制約等により、プロペラファン６Ｆの直径Ｄを５４０ｍｍ未満にする必要がある場合は、２ファンでプロペラファン６Ｆの直径Ｄを小さくする（νが２．５が大きくなるようにする）よりも、３ファン（ｎ＝３）にして、νが３．０となるようにプロペラファン６Ｆの直径Ｄを設定した方が入力を小さくすることができる。室外機本体１の高さＨが１５００ｍｍの場合、３ファンでνが３．０のときのプロペラファン６Ｆの直径Ｄは、４３３ｍｍである。 For example, from the above equation (1), when the height H of the outdoor unit body 1 is 1500 mm, the diameter D of the propeller fan 6F when ν is 2.5 with 2 fans (n = 2) is 540 mm. Therefore, when it is necessary to make the diameter D of the propeller fan 6F less than 540 mm due to restrictions on the lateral width of the outdoor unit main body 1, the diameter D of the propeller fan 6F is reduced with two fans (ν is increased by 2.5). It is possible to reduce the input by setting the diameter D of the propeller fan 6F so that ν is 3.0 with 3 fans (n = 3) rather than 3). When the height H of the outdoor unit body 1 is 1500 mm, the diameter D of the propeller fan 6F when ν is 3.0 with 3 fans is 433 mm.
　同様に、図５から明らかなように、３ファンでνが３．５を超える場合よりも、４ファンでνが４．０の場合の方が入力を小さくできる。 Similarly, as is apparent from FIG. 5, the input can be made smaller in the case of 4 fans and ν of 4.0 than in the case of 3 fans and ν exceeding 3.5.
　図６は、主に上記２ファン、３ファン、４ファンをそれぞれ同一風量で送風するように運転したときのνと騒音値（ｄＢ(デシベル)）の関係を示す。図６中、Ｆ曲線は２ファンの場合の送風騒音特性を示し、Ｇ領域は２ファンで上記（２）式を満たさない領域、すなわち、νが２．５を超える領域を示す。また、Ｈ曲線は３ファンの場合、Ｉ曲線は４ファンの場合の送風騒音特性を示す。 FIG. 6 mainly shows the relationship between ν and noise value (dB (decibel)) when the 2 fans, 3 fans, and 4 fans are operated to blow with the same air volume. In FIG. 6, the F curve indicates the blowing noise characteristics in the case of two fans, and the G region indicates a region that does not satisfy the above expression (2) with two fans, that is, a region where ν exceeds 2.5. In addition, the H curve indicates the blowing noise characteristics in the case of 3 fans, and the I curve indicates the blowing noise characteristics in the case of 4 fans.
　図６より、例えば２ファンでνが２．５の場合は、騒音値が約６２ｄＢ程度であるのに対し、νが２．５を超えるＧ領域の例えば２．８の場合は騒音値が約６６ｄＢ程度になる。一方、３ファンでνが３．０の場合は、騒音値が約６６ｄＢより小さい約６２ｄＢ程度である。 From FIG. 6, for example, when ν is 2.5 with 2 fans, the noise value is about 62 dB, whereas when the ν is over 2.5, for example 2.8, the noise value is about It becomes about 66 dB. On the other hand, when ν is 3.0 with three fans, the noise value is about 62 dB which is smaller than about 66 dB.
　したがって、２ファンでνが２．５を超えるＥ領域よりも、３ファンでνが３．０の場合の方が騒音値を小さくできる。 Therefore, the noise value can be made smaller in the case of 3 fans and ν of 3.0 than in the E region where ν exceeds 2.5 with 2 fans.
　同様に、図６から明らかなように、３ファンでνが３．５を超える場合よりも、４ファンでνが４．０の場合の方が騒音値を小さくできる。 Similarly, as is clear from FIG. 6, the noise value can be made smaller in the case of 4 fans and ν of 4.0 than in the case of ν of more than 3.5 with 3 fans.
　したがって、本実施形態によれば、複数の室外送風機を室外機本体１の高さＨ方向（上下方向）に並設する場合、上記（１）、（２）式を満たすようにすることにより、同一風量を送風する場合、室外送風機のファンモータの入力と送風騒音の低減を共に図ることができる。 Therefore, according to this embodiment, when arranging a plurality of outdoor fans in the height H direction (vertical direction) of the outdoor unit main body 1, by satisfying the above formulas (1) and (2), When the same air volume is blown, both the input of the fan motor of the outdoor fan and the reduction of the blowing noise can be achieved.
　また、３台の室外送風機６Ａ、６Ｂ、６Ｃを上下方向に延びる同一の送風機支持部材７に固定支持するようにしたので、各室外送風機６Ａ、６Ｂ、６Ｃの位置決めが容易に正確にでき、各室外送風機６Ａ、６Ｂ、６Ｃ間の間隔を均等にして、より低騒音化を図ることができる。 In addition, since the three outdoor fans 6A, 6B, 6C are fixedly supported by the same fan support member 7 extending in the vertical direction, each outdoor fan 6A, 6B, 6C can be easily and accurately positioned, The intervals between the outdoor fans 6A, 6B, and 6C can be made uniform to further reduce noise.
　以上、本発明の幾つかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。 Although several embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.
　Ｒ…室外機（熱源ユニット）、１…室外機本体（ユニット筐体）、３…仕切板、４Ａ…熱交換室、４Ｂ…機械室、５…室外熱交換器、６…室外送風機、６Ｆ…プロペラファン、６Ｍ…ファンモータ、７…送風機支持部材、８…圧縮機。 R: outdoor unit (heat source unit), 1 ... outdoor unit body (unit housing), 3 ... partition plate, 4A ... heat exchange chamber, 4B ... machine room, 5 ... outdoor heat exchanger, 6 ... outdoor blower, 6F ... Propeller fan, 6M ... fan motor, 7 ... blower support member, 8 ... compressor.

Claims (3)

  1. ユニット筐体内を水平方向に仕切板で仕切り、その一方の空間を熱交換器および送風機を配置する熱交換室とし、他方の空間を圧縮機を配置する機械室とするとともに、前記送風機を前記熱交換室に上下方向に複数台並べて配置した熱源ユニットにおいて、
    　前記送風機は、ファンモータと、このファンモータの回転軸に嵌着されるプロペラファンとからなり、前記プロペラファンの設置数ｎと、前記ユニット筐体の高さＨ（ｍｍ）および前記プロペラファンの直径Ｄ（ｍｍ）との関係νが次の（１）式と（２）式を満たすように構成されていることを特徴とする熱源ユニット。
    　　［数１］
    　　ν＝（Ｈ－５０×（ｎ＋１））／Ｄ　　　……（１）
    　　ｎ≦ν≦（ｎ＋０．５）　　　　　　　　……（２）     The inside of the unit housing is partitioned by a partition plate in the horizontal direction, one of the spaces is used as a heat exchange chamber in which a heat exchanger and a fan are arranged, and the other space is used as a machine room in which a compressor is arranged. In the heat source unit arranged in the exchange room in the vertical direction,
    The blower includes a fan motor and a propeller fan fitted to the rotation shaft of the fan motor. The number n of the installed propeller fans, the height H (mm) of the unit housing, and the propeller fan A heat source unit, characterized in that a relationship ν with a diameter D (mm) satisfies the following expressions (1) and (2).
    [Equation 1]
    ν = (H−50 × (n + 1)) / D (1)
    n ≦ ν ≦ (n + 0.5) (2)
  2. 前記送風機は、前記熱交換器に対向して設けられ、上下方向に延びる同一の支持部材に固定されていることを特徴とする請求項１記載の熱源ユニット。 2. The heat source unit according to claim 1, wherein the blower is provided to face the heat exchanger and is fixed to the same support member that extends in a vertical direction.
  3. 前記送風機の台数が３台以上であることを特徴とする請求項２記載の熱源ユニット。 The heat source unit according to claim 2, wherein the number of the blowers is three or more.
PCT/JP2012/057908 2011-03-28 2012-03-27 Heat source unit WO2012133392A1 (en)

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