WO2024122026A1 - Outdoor unit of refrigeration cycle device - Google Patents

Outdoor unit of refrigeration cycle device Download PDF

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Publication number
WO2024122026A1
WO2024122026A1 PCT/JP2022/045304 JP2022045304W WO2024122026A1 WO 2024122026 A1 WO2024122026 A1 WO 2024122026A1 JP 2022045304 W JP2022045304 W JP 2022045304W WO 2024122026 A1 WO2024122026 A1 WO 2024122026A1
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Prior art keywords
blower
outdoor unit
heat exchanger
disposed
housing
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PCT/JP2022/045304
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French (fr)
Japanese (ja)
Inventor
拓矢 寺本
弘恭 林
亮志 阿部
浩平 葛西
幸治 山口
和也 岡田
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三菱電機株式会社
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Priority to PCT/JP2022/045304 priority Critical patent/WO2024122026A1/en
Publication of WO2024122026A1 publication Critical patent/WO2024122026A1/en

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  • This disclosure relates to an outdoor unit for a refrigeration cycle device.
  • the blower is a centrifugal blower (sirocco fan)
  • the air intake is at least on the rear side of the housing
  • the air outlet is on either the right side, left side, both left and right sides, or the top of the housing (see, for example, Patent Document 1).
  • the present disclosure has been made to solve these problems. Its purpose is to provide an outdoor unit for a refrigeration cycle device that can obtain a high air volume even when the static pressure outside the outdoor unit is high, while preventing the outdoor unit from becoming too large, and that can also achieve low noise and low input.
  • the outdoor unit of the refrigeration cycle device includes a housing having a machine room in which a compressor is housed, and a blower room partitioned from the machine room and housing a heat exchanger and a blower arranged on the secondary side of the heat exchanger, the blower being a double-suction centrifugal blower including an impeller having a plurality of blades arranged in a circumferential direction around a rotation axis, and a scroll casing in which the impeller is arranged and in which two bell mouths serving as suction ports and a discharge port are formed, the housing having a front face, a back face facing the front face, and a side face connecting the front face and the back face, the heat exchanger having a first heat exchanger arranged on the front side in the blower room and a second heat exchanger arranged on the back side in the blower room, the blower being arranged between the first heat exchanger and the second heat exchanger in the blower room, and the discharge port being arranged on the side face
  • the outdoor unit of the refrigeration cycle device disclosed herein has the advantage of being able to provide a high airflow rate even when the static pressure outside the outdoor unit is high, while preventing the size from increasing, thereby achieving low noise and low input power.
  • FIG. 2 is a perspective view showing a main part of an outdoor unit of the refrigeration cycle apparatus according to the first embodiment.
  • FIG. 2 is a top view showing a main part of the outdoor unit of the refrigeration cycle apparatus according to the first embodiment.
  • FIG. 1 is a perspective side view of a main portion of an outdoor unit of a refrigeration cycle apparatus according to a first embodiment.
  • FIG. FIG. 2 is a plan view of a blower provided in the outdoor unit according to the first embodiment. 2 is a cross-sectional view of a blower provided in the outdoor unit according to the first embodiment.
  • FIG. FIG. 2 is a plan view of an impeller of a blower provided in the outdoor unit according to the first embodiment.
  • FIG. 10 is a perspective view showing a modification of the outdoor unit of the refrigeration cycle apparatus according to the first embodiment with a main part seen through.
  • FIG. 10 is a perspective view showing a modification of the outdoor unit of the refrigeration cycle apparatus according to the first embodiment with a main part seen through.
  • FIG. 10 is a perspective view showing a modification of the outdoor unit of the refrigeration cycle apparatus according to the first embodiment with a main part seen through.
  • FIG. 11 is a perspective top view of a main part of a modified example of the outdoor unit of the refrigeration cycle apparatus according to the first embodiment.
  • Fig. 1 is a perspective view showing a main part of an outdoor unit of a refrigeration cycle device.
  • Fig. 2 is a top view showing a main part of an outdoor unit of a refrigeration cycle device.
  • Fig. 3 is a side view showing a main part of an outdoor unit of a refrigeration cycle device.
  • Fig. 4 is a plan view of a blower provided in the outdoor unit.
  • Fig. 5 is a cross-sectional view of a blower provided in the outdoor unit.
  • Fig. 6 is a plan view of an impeller of a blower provided in the outdoor unit.
  • Figs. 7 to 9 are each a perspective view showing a main part of a modified example of an outdoor unit of a refrigeration cycle device.
  • Fig. 10 is a top view showing a main part of a modified example of an outdoor unit of a refrigeration cycle device.
  • the refrigeration cycle device includes an indoor unit and an outdoor unit. Each of the indoor unit and the outdoor unit is provided with a heat exchanger. The heat exchanger of the indoor unit and the heat exchanger of the outdoor unit are connected by a refrigerant pipe that is provided in a circular manner.
  • the refrigeration cycle device functions as a heat pump that transfers heat between the heat exchanger of the indoor unit and the heat exchanger of the outdoor unit by circulating the refrigerant that flows through the refrigerant pipe between the heat exchanger of the indoor unit and the heat exchanger of the outdoor unit.
  • the outdoor unit of the refrigeration cycle device includes a housing 10, as shown in Figs. 1 to 3.
  • the housing 10 has, for example, a rectangular parallelepiped shape. That is, in the illustrated configuration example, the housing 10 has a front surface 11, a back surface 12, a top surface 13, a bottom surface 14, and left and right side surfaces 15, which are a first side surface 15a and a second side surface 15b.
  • the front surface 11 and the back surface 12 face each other.
  • the left and right side surfaces 15, i.e., the first side surface 15a and the second side surface 15b also face each other.
  • the first side surface 15a and the second side surface 15b which are the left and right side surfaces 15, each connect the front surface 11 and the back surface 12.
  • the housing 10 is formed with a machine chamber 21 and a blower chamber 22.
  • the machine chamber 21 is located on one of the left and right sides of the housing 10.
  • the blower chamber 22 is located on the other left and right side of the housing 10. In the illustrated example, the blower chamber 22 is located on the first side 15a side of the housing 10, and the machine chamber 21 is located on the second side 15b side of the housing 10.
  • the machine chamber 21 and the blower chamber 22 are partitioned.
  • a compressor, an electrical equipment box, etc. (not shown) are housed inside the machine chamber 21.
  • the blower chamber 22 houses a heat exchanger 30 and a blower 100.
  • An outdoor unit inlet is formed on the front 11 and back 12 of the housing 10 in the portion where the blower chamber 22 is located.
  • an outdoor unit outlet 16 is formed on the first side 15a, which is the side surface 15 of the housing 10 in the portion where the blower chamber 22 is located.
  • the inside of the blower chamber 22 forms an air passage that leads from the outdoor unit inlet to the outdoor unit outlet 16.
  • the heat exchanger 30 includes a first heat exchanger 31 and a second heat exchanger 32.
  • the first heat exchanger 31 is disposed on the front side 11 of the blower chamber 22.
  • the second heat exchanger 32 is disposed on the back side 12 of the blower chamber 22.
  • the blower 100 is disposed downstream of the heat exchanger 30 in the air passage in the blower chamber 22. In other words, the blower 100 is disposed on the secondary side of the heat exchanger 30. In the outdoor unit according to this embodiment, the blower 100 is disposed between the first heat exchanger 31 and the second heat exchanger 32 in the blower chamber 22.
  • blower 100 As shown in Figures 1 and 3, in the configuration example described here, three blowers 100 are provided in the blower chamber 22. In this configuration example, the three blowers 100 are arranged in a vertical line. Each blower 100 is a so-called double-suction type centrifugal blower. As shown in Figures 4 and 5, the blower 100 includes an impeller 200, a scroll casing 110, a motor 101, and a shaft 102.
  • the impeller 200 is a centrifugal fan for generating an airflow for the blower 100.
  • the impeller 200 is disposed inside the scroll casing 110.
  • the impeller 200 is rotatable around a rotation axis inside the scroll casing 110.
  • the impeller 200 has a plurality of blades 210.
  • the plurality of blades 210 of the impeller 200 are arranged in a circumferential direction around the rotation axis of the impeller 200.
  • the scroll casing 110 straightens the air blown out from the impeller 200.
  • the scroll casing 110 has two side walls and a peripheral wall.
  • the side walls of the scroll casing 110 are provided on both sides of the impeller 200 in the direction of the rotation axis of the impeller 200.
  • the peripheral wall of the scroll casing 110 is provided so as to surround the impeller 200 from the radial outside of the impeller 200.
  • the two side walls are arranged opposite each other via the peripheral wall.
  • the scroll casing 110 has two bell mouths 111.
  • the two bell mouths 111 of the scroll casing 110 are the suction ports of the blower 100.
  • the bell mouths 111 are provided on each of the two side walls of the scroll casing 110.
  • the suction port formed by the bell mouths 111 is circular with the rotation axis of the impeller 200 as the center.
  • the shape of the suction port is not limited to a circular shape, and may be other shapes such as an elliptical shape.
  • the bell mouths 111 straighten the gas sucked into the impeller 200 and allow it to flow into the suction port of the impeller 200.
  • the bell mouths 111 are formed so that the opening diameter gradually becomes smaller from the outside to the inside of the scroll casing 110. As a result, the air near the suction port flows smoothly along the bell mouths 111 and efficiently flows into the impeller 200 from the suction port.
  • the scroll casing 110 is formed with a discharge port 112.
  • the discharge port 112 is an opening through which the airflow generated by the impeller 200 within the scroll casing 110 is discharged.
  • the opening shape of the discharge port 112 is, for example, rectangular. However, the opening shape of the discharge port 112 is not limited to a rectangular shape.
  • the opening surface of the discharge port 112 is arranged parallel to the rotation axis of the impeller 200.
  • the peripheral wall of the scroll casing 110 guides the airflow generated by the impeller 200 along the curved wall surface to the discharge port 112.
  • the peripheral wall is a wall provided between opposing side walls.
  • the peripheral wall is arranged, for example, parallel to the direction of the rotation axis of the impeller 200. Note that the peripheral wall may be inclined with respect to the direction of the rotation axis of the impeller 200, and is not limited to being arranged parallel to the direction of the rotation axis.
  • the peripheral wall of the scroll casing 110 is formed into a curved surface that has a spiral shape when viewed from a direction parallel to the rotation axis of the impeller 200.
  • the spiral shape include a logarithmic spiral, an Archimedean spiral, or a spiral shape based on an involute curve. This allows the air sent out from the impeller 200 to flow smoothly through the gap between the impeller 200 and the peripheral wall in the direction of the discharge port 112. Therefore, inside the scroll casing 110, the static pressure of the air increases efficiently toward the discharge port 112.
  • the scroll casing 110 has a discharge section 113.
  • the discharge section 113 connects the scroll section of the scroll casing 110, in which the bell mouth 111 is provided, to the discharge port 112.
  • the discharge section 113 guides the airflow generated by the rotating impeller 200 to the discharge port 112.
  • One side of the peripheral wall of the discharge section 113 smoothly continues to the end of the spiral shape described above.
  • the other side of the peripheral wall of the discharge section 113 is connected to the beginning of the spiral shape described above via a tongue section 114.
  • the tongue section 114 is a convex section that bulges into the inside of the scroll casing 110.
  • the airflow that has passed through the impeller 200 is divided by the tongue section 114 into an airflow that re-flows into the gap between the impeller 200 and the peripheral wall of the scroll casing 110, and an airflow that heads toward the discharge port 112.
  • the discharge section 113 is formed so that the cross-sectional area of the air passage gradually increases from the scroll section to the discharge port 112. As a result, the discharge section 113 also functions as a diffuser that spreads the airflow blown out from the discharge port 112.
  • the "rotation shaft of the impeller 200" may also be referred to as the "rotation shaft of the blower 100."
  • the blower 100 configured as described above is a double-suction centrifugal blower that draws in air from both ends of the rotation shaft of the blower 100 and blows out air in a direction perpendicular to the rotation shaft of the blower 100.
  • the motor 101 and shaft 102 are common to each blower 100. That is, in the configuration example described here, one motor 101 and one shaft 102 are provided for three blowers 100.
  • the motor 101 is disposed outside the scroll casing 110 of each blower 100. In the example shown in FIG. 3, the motor 101 is disposed above the three blowers 100 that are arranged vertically.
  • the shaft 102 transmits the rotational driving force of the motor 101 to each of the impellers 200 of each blower 100.
  • the blowers 100 are disposed so that the rotation axes of the impellers 200 of each blower 100 coincide with each other.
  • the shaft 102 is provided along the rotation axis of each of the impellers 200 of each blower 100. The center of each of the impellers 200 of each blower 100 is fixed to the shaft 102.
  • the first side surface 15a of the housing 10 has an outdoor unit outlet 16 formed thereon.
  • the outdoor unit outlets 16 are provided in the same number as the outlets 112 of the blowers 100. In the configuration example described here, three blowers 100 are provided, and each blower 100 has one outlet 112, so that the outdoor unit has a total of three outlets 112 as a whole.
  • Three outdoor unit outlets 16 are also formed on the first side surface 15a of the housing 10. The position and size of each outdoor unit outlet 16 are adjusted to match the position and size of each outlet 112. Each outlet 112 is then disposed in its respective outdoor unit outlet 16.
  • the outlet 112 of the blower 100 is arranged at the outdoor unit outlet 16 on the first side 15a of the housing 10.
  • the inlet of each blower 100 is arranged facing the top surface 13 and bottom surface 14 of the housing 10.
  • the rotation axis of the blower 100 is arranged along the vertical direction. Note that the number of outlets 112 and outdoor unit outlets 16 that the outdoor unit has is not limited to three, and it is sufficient if there is one or more outlets 112 and outdoor unit outlets 16.
  • the outdoor unit of the refrigeration cycle device configured as described above, makes it possible to increase the area through which the airflow passes through the heat exchanger 30 without increasing the size of the outdoor unit, and even when the static pressure outside the outdoor unit is high, a high air volume can be obtained, resulting in lower noise levels and lower input power.
  • each of the multiple blades 210 of the impeller 200 has a turbo blade portion 211 and a sirocco blade portion 212.
  • the turbo blade portion 211 is provided on the inner circumferential side of the sirocco blade portion 212 in the radial direction centered on the rotation axis of the impeller 200.
  • the sirocco blade portion 212 is provided on the outer circumferential side of the turbo blade portion 211 in the radial direction centered on the rotation axis of the impeller 200.
  • the turbo blade portion 211 constitutes a backward blade with an exit angle formed at an angle of 90 degrees or less.
  • the sirocco blade portion 212 constitutes a forward blade with an exit angle formed at an angle greater than 90 degrees.
  • the exit angle is the angle formed by the center line of the blade 210 and the tangent to the outer diameter circle of the impeller 200 at the intersection of the outer diameter circle of the impeller 200 and the center line of the blade 210.
  • the boundary between the turbo blade portion 211 and the sirocco blade portion 212 is indicated by a dashed line in FIG. 6.
  • the sirocco blade portion 212 is not necessarily provided. However, providing the sirocco blade portion 212 can increase the air volume of the blower 100.
  • Each of the multiple blades 210 is formed so that the height from the plate surface of the main plate portion 201 decreases the further inward from the inner peripheral end portion 204.
  • the turbo blade portion 211 includes this inner peripheral end portion 204.
  • the position of the inner peripheral end portion 204 is indicated by a dashed line in Figure 6.
  • the turbo blade portion 211 when the blower 100 is viewed in a direction parallel to the rotation axis of the blower 100, the turbo blade portion 211 is exposed from the intake port of the blower 100. In this way, the turbo blade portion 211 can improve the pressure recovery performance of the blower 100, making it possible to achieve even lower input power.
  • the tongue portion 114 of the blower 100 is disposed on the rear surface 12 side of the housing 10.
  • the tongue portion 114 of the blower 100 is disposed on the front surface 11 side of the housing 10.
  • the peripheral wall on the front surface 11 side of the discharge portion 113 is disposed so that the closer it is to the discharge port 112, the closer it is to the front surface 11 of the housing 10.
  • the airflow blown out from the outlet 112 spreads toward the front 11 side along the peripheral wall of the outlet portion 113 on the front 11 side, and is in a direction that is tilted toward the front 11 side rather than perpendicular to the side surface 15.
  • the outdoor unit housing 10 is often in a state where the rear 12 side is close to a wall of a building or the like.
  • the airflow blown out from the outlet 112 and the outdoor unit air outlet 16 heads toward the front 11 side and away from the rear 12 side, suppressing the increase in pressure loss caused by the influence of the wall of a building or the like on the rear 12 side, making it possible to achieve low noise and low input.
  • the intake port of the blower 100 may be arranged facing the front 11 and rear 12 directions of the housing 10.
  • the rotation axis of the blower 100 is arranged along the front-to-rear direction.
  • the bell mouth 111 (intake port) of the blower 100 is arranged facing the heat exchanger 30, thereby improving the intake efficiency of the blower 100 and increasing the air volume.
  • the machine room 21 is disposed to the side of the blower room 22.
  • the relative positional relationship between the machine room 21 and the blower room 22 in the housing 10 is not limited to this.
  • the machine room 21 may be disposed below the blower room 22.
  • the blower chamber 22 When the machine chamber 21 is disposed below the blower chamber 22, the blower chamber 22 is disposed on the upper side of the housing 10, from the first side surface 15a to the second side surface 15b. Therefore, in this case, the outdoor unit outlet 16 and the outlet 112 of the blower 100 may be disposed not only on the first side surface 15a but also on the second side surface 15b.
  • two outlets 112 a first outlet 112a and a second outlet 112b, are formed in the scroll casing 110 of the blower 100. Therefore, one blower 100 has the first outlet 112a and the second outlet 112b as the outlets 112.
  • the first outlet 112a and the second outlet 112b are provided at positions on opposite sides of the impeller 200.
  • the first outlet 112a of the blower 100 is disposed on the first side 15a of the housing 10.
  • the second outlet 112b of the blower 100 is disposed on the second side 15b of the housing 10. In this way, the number of outlets 112 can be increased to increase the air volume, which makes it possible to reduce noise and input.
  • This disclosure can be used in the outdoor unit of a refrigeration cycle device that has a double-suction centrifugal blower in the blower chamber of the housing.

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Abstract

The present invention provides an outdoor unit of a refrigeration cycle device, with which a reduced size can be achieved and a large airflow amount can be obtained even when external static pressure is high. To this end, the outdoor unit comprises a housing in which a machine chamber and a blower chamber accommodating a heat exchanger and a blower therein are formed. The blower is a double suction-type centrifugal blower which comprises an impeller and a scroll casing having suction ports and a discharge port formed therein and having the impeller disposed therein. The heat exchanger has a first heat exchanger which is disposed on the front side in the blower chamber and a second heat exchanger which is disposed on the rear side in the blower chamber. The blower is disposed between the first heat exchanger and the second heat exchanger in the blower chamber. The discharge port is disposed in a side surface of the housing.

Description

冷凍サイクル装置の室外機Outdoor unit for refrigeration cycle equipment
　本開示は、冷凍サイクル装置の室外機に関するものである。 This disclosure relates to an outdoor unit for a refrigeration cycle device.
　空気熱交換器と送風機を設けた空気調和機の室外機において、送風機を遠心送風機（シロッコファン）とし、空気吸込口を筐体の少なくとも背面側に、空気吹出口を筐体の右側面、左側面、左右両側面、上面のいずれかに設けたものが知られている（例えば、特許文献１参照）。 In an outdoor unit of an air conditioner equipped with an air heat exchanger and a blower, the blower is a centrifugal blower (sirocco fan), the air intake is at least on the rear side of the housing, and the air outlet is on either the right side, left side, both left and right sides, or the top of the housing (see, for example, Patent Document 1).
日本特開平０７－０２７３６９号公報Japanese Patent Publication No. 07-027369
　しかしながら、特許文献１に示されるような冷凍サイクル装置の室外機においては、室外機の筐体のサイズに対して、気流が空気熱交換器を通過する面積を増大させることが難しく、従来のプロペラファンを搭載した同サイズの室外機と比較して、風量が小さくなってしまう。このため、特に室外機外部の静圧が高い場合には十分な風量を得ることが困難である。また、風量が小さくなり、十分な圧力回復が難しいため、騒音増大、入力悪化を招いてしまう。 However, in the outdoor unit of a refrigeration cycle device such as that shown in Patent Document 1, it is difficult to increase the area through which the airflow passes through the air heat exchanger relative to the size of the outdoor unit's housing, and the air volume is smaller than that of an outdoor unit of the same size equipped with a conventional propeller fan. For this reason, it is difficult to obtain a sufficient air volume, especially when the static pressure outside the outdoor unit is high. Furthermore, the smaller air volume makes it difficult to fully recover pressure, leading to increased noise and a worsening of input power.
　本開示は、このような課題を解決するためになされたものである。その目的は、室外機のサイズの大型化を抑制しつつ、室外機外部の静圧が高い場合であっても、高い風量を得ることができ、ひいては低騒音化、低入力化を図ることができる冷凍サイクル装置の室外機を提供することにある。 The present disclosure has been made to solve these problems. Its purpose is to provide an outdoor unit for a refrigeration cycle device that can obtain a high air volume even when the static pressure outside the outdoor unit is high, while preventing the outdoor unit from becoming too large, and that can also achieve low noise and low input.
　本開示に係る冷凍サイクル装置の室外機は、内部に圧縮機が収容された機械室と、前記機械室と区画され内部に熱交換器及び前記熱交換器の２次側に配置された送風機が収容された送風機室とが形成された筐体を備え、前記送風機は、回転軸を中心とする周方向に配列した複数の羽根を有する羽根車と、吸込口となる２つのベルマウスと吐出口とが形成され、内部に前記羽根車が配置されたスクロールケーシングと、を備えた両吸込型の遠心送風機であり、前記筐体は、正面と、前記正面に対向する背面と、前記正面と前記背面とを接続する側面とを有し、前記熱交換器は、前記送風機室内における前記正面側に配置された第１熱交換器と、前記送風機室内における前記背面側に配置された第２熱交換器と、を有し、前記送風機は、前記送風機室内における前記第１熱交換器と前記第２熱交換器との間に配置され、前記吐出口は、前記筐体の前記側面に配置される。 The outdoor unit of the refrigeration cycle device according to the present disclosure includes a housing having a machine room in which a compressor is housed, and a blower room partitioned from the machine room and housing a heat exchanger and a blower arranged on the secondary side of the heat exchanger, the blower being a double-suction centrifugal blower including an impeller having a plurality of blades arranged in a circumferential direction around a rotation axis, and a scroll casing in which the impeller is arranged and in which two bell mouths serving as suction ports and a discharge port are formed, the housing having a front face, a back face facing the front face, and a side face connecting the front face and the back face, the heat exchanger having a first heat exchanger arranged on the front side in the blower room and a second heat exchanger arranged on the back side in the blower room, the blower being arranged between the first heat exchanger and the second heat exchanger in the blower room, and the discharge port being arranged on the side face of the housing.
　本開示に係る冷凍サイクル装置の室外機によれば、サイズの大型化を抑制しつつ、室外機外部の静圧が高い場合であっても、高い風量を得ることができ、ひいては低騒音化、低入力化を図ることができるという効果を奏する。 The outdoor unit of the refrigeration cycle device disclosed herein has the advantage of being able to provide a high airflow rate even when the static pressure outside the outdoor unit is high, while preventing the size from increasing, thereby achieving low noise and low input power.
実施の形態１に係る冷凍サイクル装置の室外機の要部を透視した斜視図である。2 is a perspective view showing a main part of an outdoor unit of the refrigeration cycle apparatus according to the first embodiment. FIG. 実施の形態１に係る冷凍サイクル装置の室外機の要部を透視した上面図である。2 is a top view showing a main part of the outdoor unit of the refrigeration cycle apparatus according to the first embodiment. FIG. 実施の形態１に係る冷凍サイクル装置の室外機の要部を透視した側面図である。1 is a perspective side view of a main portion of an outdoor unit of a refrigeration cycle apparatus according to a first embodiment. FIG. 実施の形態１に係る室外機が備える送風機の平面図である。FIG. 2 is a plan view of a blower provided in the outdoor unit according to the first embodiment. 実施の形態１に係る室外機が備える送風機の断面図である。2 is a cross-sectional view of a blower provided in the outdoor unit according to the first embodiment. FIG. 実施の形態１に係る室外機が備える送風機の羽根車の平面図である。FIG. 2 is a plan view of an impeller of a blower provided in the outdoor unit according to the first embodiment. 実施の形態１に係る冷凍サイクル装置の室外機の変形例を示す要部を透視した斜視図である。10 is a perspective view showing a modification of the outdoor unit of the refrigeration cycle apparatus according to the first embodiment with a main part seen through. FIG. 実施の形態１に係る冷凍サイクル装置の室外機の変形例を示す要部を透視した斜視図である。10 is a perspective view showing a modification of the outdoor unit of the refrigeration cycle apparatus according to the first embodiment with a main part seen through. FIG. 実施の形態１に係る冷凍サイクル装置の室外機の変形例を示す要部を透視した斜視図である。10 is a perspective view showing a modification of the outdoor unit of the refrigeration cycle apparatus according to the first embodiment with a main part seen through. FIG. 実施の形態１に係る冷凍サイクル装置の室外機の変形例を示す要部を透視した上面図である。FIG. 11 is a perspective top view of a main part of a modified example of the outdoor unit of the refrigeration cycle apparatus according to the first embodiment.
　本開示に係る冷凍サイクル装置の室外機を実施するための形態について添付の図面を参照しながら説明する。各図において、同一又は相当する部分には同一の符号を付して、重複する説明は適宜に簡略化又は省略する。以下の説明においては便宜上、図示の状態を基準に各構造の位置関係を表現することがある。なお、本開示は以下の実施の形態に限定されることなく、本開示の趣旨を逸脱しない範囲において、各実施の形態の自由な組み合わせ、各実施の形態の任意の構成要素の変形、又は各実施の形態の任意の構成要素の省略が可能である。 The following describes an embodiment for implementing the outdoor unit of the refrigeration cycle device according to the present disclosure with reference to the attached drawings. In each drawing, the same or corresponding parts are given the same reference numerals, and duplicated explanations are appropriately simplified or omitted. For convenience, in the following description, the positional relationship of each structure may be expressed based on the illustrated state. Note that this disclosure is not limited to the following embodiments, and the embodiments may be freely combined, any component of each embodiment may be modified, or any component of each embodiment may be omitted, within the scope of the spirit of this disclosure.
実施の形態１．
　図１から図１０を参照しながら、本開示の実施の形態１について説明する。図１は冷凍サイクル装置の室外機の要部を透視した斜視図である。図２は冷凍サイクル装置の室外機の要部を透視した上面図である。図３は冷凍サイクル装置の室外機の要部を透視した側面図である。図４は室外機が備える送風機の平面図である。図５は室外機が備える送風機の断面図である。図６は室外機が備える送風機の羽根車の平面図である。図７から図９のそれぞれは冷凍サイクル装置の室外機の変形例を示す要部を透視した斜視図である。図１０は冷凍サイクル装置の室外機の変形例を示す要部を透視した上面図である。 Embodiment 1.
A first embodiment of the present disclosure will be described with reference to Figs. 1 to 10. Fig. 1 is a perspective view showing a main part of an outdoor unit of a refrigeration cycle device. Fig. 2 is a top view showing a main part of an outdoor unit of a refrigeration cycle device. Fig. 3 is a side view showing a main part of an outdoor unit of a refrigeration cycle device. Fig. 4 is a plan view of a blower provided in the outdoor unit. Fig. 5 is a cross-sectional view of a blower provided in the outdoor unit. Fig. 6 is a plan view of an impeller of a blower provided in the outdoor unit. Figs. 7 to 9 are each a perspective view showing a main part of a modified example of an outdoor unit of a refrigeration cycle device. Fig. 10 is a top view showing a main part of a modified example of an outdoor unit of a refrigeration cycle device.
　この実施の形態に係る冷凍サイクル装置は、室内機と室外機とを備えている。室内機及び室外機のそれぞれには熱交換器が設けられている。室内機の熱交換器と室外機の熱交換器とは、循環的に設けられた冷媒配管により接続されている。冷凍サイクル装置は、室内機の熱交換器と室外機の熱交換器との間で冷媒配管内を流通する冷媒が循環することで、室内機の熱交換器と室外機の熱交換器との間で熱を移動させるヒートポンプとして働く。 The refrigeration cycle device according to this embodiment includes an indoor unit and an outdoor unit. Each of the indoor unit and the outdoor unit is provided with a heat exchanger. The heat exchanger of the indoor unit and the heat exchanger of the outdoor unit are connected by a refrigerant pipe that is provided in a circular manner. The refrigeration cycle device functions as a heat pump that transfers heat between the heat exchanger of the indoor unit and the heat exchanger of the outdoor unit by circulating the refrigerant that flows through the refrigerant pipe between the heat exchanger of the indoor unit and the heat exchanger of the outdoor unit.
　この実施の形態に係る冷凍サイクル装置の室外機は、図１から図３に示すように、筐体１０を備えている。筐体１０は、例えば直方体状の外形を有する。すなわち、図示の構成例では、筐体１０は、正面１１、背面１２、上面１３、底面１４及び左右の両側面１５である第１側面１５ａ及び第２側面１５ｂを有している。正面１１と背面１２とは対向している。また、左右の両側面１５同士すなわち第１側面１５ａ及び第２側面１５ｂも対向している。左右の両側面１５である第１側面１５ａ及び第２側面１５ｂのそれぞれは、正面１１と背面１２とを接続している。 The outdoor unit of the refrigeration cycle device according to this embodiment includes a housing 10, as shown in Figs. 1 to 3. The housing 10 has, for example, a rectangular parallelepiped shape. That is, in the illustrated configuration example, the housing 10 has a front surface 11, a back surface 12, a top surface 13, a bottom surface 14, and left and right side surfaces 15, which are a first side surface 15a and a second side surface 15b. The front surface 11 and the back surface 12 face each other. The left and right side surfaces 15, i.e., the first side surface 15a and the second side surface 15b, also face each other. The first side surface 15a and the second side surface 15b, which are the left and right side surfaces 15, each connect the front surface 11 and the back surface 12.
　筐体１０には、機械室２１と送風機室２２とが形成されている。機械室２１は、筐体１０における左右の一側に配置されている。送風機室２２は、筐体１０における左右の他側に配置されている。図示の例では、送風機室２２は筐体１０の第１側面１５ａ側に配置され、機械室２１は筐体１０の第２側面１５ｂ側に配置されている。機械室２１と送風機室２２とは区画されている。機械室２１の内部には、図示しない圧縮機及び電気品箱等が収容されている。送風機室２２の内部には、熱交換器３０と送風機１００とが収容されている。 The housing 10 is formed with a machine chamber 21 and a blower chamber 22. The machine chamber 21 is located on one of the left and right sides of the housing 10. The blower chamber 22 is located on the other left and right side of the housing 10. In the illustrated example, the blower chamber 22 is located on the first side 15a side of the housing 10, and the machine chamber 21 is located on the second side 15b side of the housing 10. The machine chamber 21 and the blower chamber 22 are partitioned. A compressor, an electrical equipment box, etc. (not shown) are housed inside the machine chamber 21. The blower chamber 22 houses a heat exchanger 30 and a blower 100.
　筐体１０の送風機室２２が配置された部分における正面１１及び背面１２には、室外機吸込口が形成されている。また、筐体１０の送風機室２２が配置された部分の側面１５である第１側面１５ａには、室外機吹出口１６が形成されている。送風機室２２の内部は、室外機吸込口から室外機吹出口１６に通じる風路になっている。 An outdoor unit inlet is formed on the front 11 and back 12 of the housing 10 in the portion where the blower chamber 22 is located. In addition, an outdoor unit outlet 16 is formed on the first side 15a, which is the side surface 15 of the housing 10 in the portion where the blower chamber 22 is located. The inside of the blower chamber 22 forms an air passage that leads from the outdoor unit inlet to the outdoor unit outlet 16.
　この実施の形態に係る室外機においては、熱交換器３０として第１熱交換器３１と第２熱交換器３２とを有している。第１熱交換器３１は、送風機室２２内における正面１１側に配置されている。第２熱交換器３２は、送風機室２２内における背面１２側に配置されている。 In the outdoor unit according to this embodiment, the heat exchanger 30 includes a first heat exchanger 31 and a second heat exchanger 32. The first heat exchanger 31 is disposed on the front side 11 of the blower chamber 22. The second heat exchanger 32 is disposed on the back side 12 of the blower chamber 22.
　送風機１００は、送風機室２２内の風路中において、熱交換器３０の下流側に配置されている。換言すれば、送風機１００は、熱交換器３０の２次側に配置されている。この実施の形態に係る室外機においては、送風機１００は、送風機室２２内における第１熱交換器３１と第２熱交換器３２との間に配置されている。 The blower 100 is disposed downstream of the heat exchanger 30 in the air passage in the blower chamber 22. In other words, the blower 100 is disposed on the secondary side of the heat exchanger 30. In the outdoor unit according to this embodiment, the blower 100 is disposed between the first heat exchanger 31 and the second heat exchanger 32 in the blower chamber 22.
　図１及び図３に示すように、ここで説明する構成例では、３つの送風機１００が送風機室２２内に設けられている。そして、この構成例では、３つの送風機１００が上下方向に並んで配置されている。それぞれの送風機１００は、いわゆる両吸込型の遠心送風機である。図４及び図５に示すように、送風機１００は、羽根車２００と、スクロールケーシング１１０と、モータ１０１と、シャフト１０２とを備えている。 As shown in Figures 1 and 3, in the configuration example described here, three blowers 100 are provided in the blower chamber 22. In this configuration example, the three blowers 100 are arranged in a vertical line. Each blower 100 is a so-called double-suction type centrifugal blower. As shown in Figures 4 and 5, the blower 100 includes an impeller 200, a scroll casing 110, a motor 101, and a shaft 102.
　羽根車２００は、送風機１００の気流を発生させるための遠心式のファンである。羽根車２００は、スクロールケーシング１１０の内部に配置されている。羽根車２００は、スクロールケーシング１１０の内部において、回転軸を中心にして回転可能である。図６に示すように、羽根車２００は、複数の羽根２１０を有する。羽根車２００の複数の羽根２１０は、羽根車２００の回転軸を中心とする周方向に配列されている。 The impeller 200 is a centrifugal fan for generating an airflow for the blower 100. The impeller 200 is disposed inside the scroll casing 110. The impeller 200 is rotatable around a rotation axis inside the scroll casing 110. As shown in FIG. 6, the impeller 200 has a plurality of blades 210. The plurality of blades 210 of the impeller 200 are arranged in a circumferential direction around the rotation axis of the impeller 200.
　スクロールケーシング１１０は、羽根車２００から吹き出された空気を整流する。スクロールケーシング１１０は、２つの側壁と周壁とを有する。スクロールケーシング１１０の側壁は、羽根車２００の回転軸方向において羽根車２００の両側に設けられる。スクロールケーシング１１０の周壁は、羽根車２００の径方向の外側から羽根車２００を囲うようにして設けられる。２つの側壁は、周壁を介して互いに対向して配置されている。 The scroll casing 110 straightens the air blown out from the impeller 200. The scroll casing 110 has two side walls and a peripheral wall. The side walls of the scroll casing 110 are provided on both sides of the impeller 200 in the direction of the rotation axis of the impeller 200. The peripheral wall of the scroll casing 110 is provided so as to surround the impeller 200 from the radial outside of the impeller 200. The two side walls are arranged opposite each other via the peripheral wall.
　図５に示すように、スクロールケーシング１１０には、２つのベルマウス１１１が形成されている。スクロールケーシング１１０の２つのベルマウス１１１は、送風機１００の吸込口になる。ベルマウス１１１は、スクロールケーシング１１０の２つの側壁のそれぞれに設けられている。ベルマウス１１１により形成される吸込口は、羽根車２００の回転軸を中心とした円形状である。なお、吸込口の形状は、円形状に限定されるものではなく、例えば楕円形状等、他の形状であってもよい。ベルマウス１１１は、羽根車２００に吸入される気体を整流して羽根車２００の吸込口に流入させる。ベルマウス１１１は、スクロールケーシング１１０の外部から内部に向けて開口径が次第に小さくなるように形成されている。これにより、吸込口近傍の空気はベルマウス１１１に沿って滑らかに流動し、吸込口から羽根車２００に効率よく流入する。 As shown in FIG. 5, the scroll casing 110 has two bell mouths 111. The two bell mouths 111 of the scroll casing 110 are the suction ports of the blower 100. The bell mouths 111 are provided on each of the two side walls of the scroll casing 110. The suction port formed by the bell mouths 111 is circular with the rotation axis of the impeller 200 as the center. The shape of the suction port is not limited to a circular shape, and may be other shapes such as an elliptical shape. The bell mouths 111 straighten the gas sucked into the impeller 200 and allow it to flow into the suction port of the impeller 200. The bell mouths 111 are formed so that the opening diameter gradually becomes smaller from the outside to the inside of the scroll casing 110. As a result, the air near the suction port flows smoothly along the bell mouths 111 and efficiently flows into the impeller 200 from the suction port.
　スクロールケーシング１１０には、吐出口１１２が形成されている。吐出口１１２は、羽根車２００が発生させたスクロールケーシング１１０内の気流が吐き出される開口である。吐出口１１２の開口形状は、例えば矩形状である。ただし、吐出口１１２の開口形状は、矩形状に限定されない。吐出口１１２の開口面は、羽根車２００の回転軸と平行に配置されている。 The scroll casing 110 is formed with a discharge port 112. The discharge port 112 is an opening through which the airflow generated by the impeller 200 within the scroll casing 110 is discharged. The opening shape of the discharge port 112 is, for example, rectangular. However, the opening shape of the discharge port 112 is not limited to a rectangular shape. The opening surface of the discharge port 112 is arranged parallel to the rotation axis of the impeller 200.
　スクロールケーシング１１０の周壁は、羽根車２００が発生させた気流を、湾曲する壁面に沿わせて吐出口１１２に導く。周壁は、互いに対向する側壁の間に設けられた壁である。周壁は、例えば、羽根車２００の回転軸方向と平行に配置されている。なお、周壁は、羽根車２００の回転軸方向に対して傾斜していてもよく、回転軸方向と平行に配置される形態に限定されるものではない。 The peripheral wall of the scroll casing 110 guides the airflow generated by the impeller 200 along the curved wall surface to the discharge port 112. The peripheral wall is a wall provided between opposing side walls. The peripheral wall is arranged, for example, parallel to the direction of the rotation axis of the impeller 200. Note that the peripheral wall may be inclined with respect to the direction of the rotation axis of the impeller 200, and is not limited to being arranged parallel to the direction of the rotation axis.
　スクロールケーシング１１０の周壁は、羽根車２００の回転軸に平行な方向から見て渦巻形状となる湾曲面に形成されている。渦巻形状としては、例えば、対数螺旋、アルキメデス螺旋、あるいは、インボリュート曲線等に基づく渦巻形状がある。これにより、羽根車２００から送り出された空気は、吐出口１１２の方向へ羽根車２００と周壁との間隙を滑らかに流動する。このため、スクロールケーシング１１０内では、吐出口１１２へ向かって空気の静圧が効率よく上昇する。 The peripheral wall of the scroll casing 110 is formed into a curved surface that has a spiral shape when viewed from a direction parallel to the rotation axis of the impeller 200. Examples of the spiral shape include a logarithmic spiral, an Archimedean spiral, or a spiral shape based on an involute curve. This allows the air sent out from the impeller 200 to flow smoothly through the gap between the impeller 200 and the peripheral wall in the direction of the discharge port 112. Therefore, inside the scroll casing 110, the static pressure of the air increases efficiently toward the discharge port 112.
　スクロールケーシング１１０は、吐出部１１３を備えている。吐出部１１３は、スクロールケーシング１１０のベルマウス１１１が設けられたスクロール部と吐出口１１２とを接続している。吐出部１１３により、回転する羽根車２００により生成された気流が吐出口１１２に導かれる。吐出部１１３の周壁の一方は、前述した渦巻形状の巻き終わり部と滑らかに連続している。吐出部１１３の周壁の他方は、前述した渦巻形状の巻き始め部に舌部１１４を介して接続されている。舌部１１４は、スクロールケーシング１１０の内部に膨出する凸部である。羽根車２００を通過した気流は、舌部１１４により、羽根車２００とスクロールケーシング１１０の周壁との間隙に再流入する気流と、吐出口１１２へ向かう気流とに分けられる。 The scroll casing 110 has a discharge section 113. The discharge section 113 connects the scroll section of the scroll casing 110, in which the bell mouth 111 is provided, to the discharge port 112. The discharge section 113 guides the airflow generated by the rotating impeller 200 to the discharge port 112. One side of the peripheral wall of the discharge section 113 smoothly continues to the end of the spiral shape described above. The other side of the peripheral wall of the discharge section 113 is connected to the beginning of the spiral shape described above via a tongue section 114. The tongue section 114 is a convex section that bulges into the inside of the scroll casing 110. The airflow that has passed through the impeller 200 is divided by the tongue section 114 into an airflow that re-flows into the gap between the impeller 200 and the peripheral wall of the scroll casing 110, and an airflow that heads toward the discharge port 112.
　吐出部１１３は、スクロール部から吐出口１１２にいくに従って風路断面積が次第に大きくなるように形成されている。これにより、吐出部１１３は、吐出口１１２から吹き出す気流が広がるようにするディフューザとしても機能している。 The discharge section 113 is formed so that the cross-sectional area of the air passage gradually increases from the scroll section to the discharge port 112. As a result, the discharge section 113 also functions as a diffuser that spreads the airflow blown out from the discharge port 112.
　以降の説明においては、「羽根車２００の回転軸」を「送風機１００の回転軸」とも呼ぶことがある。以上のように構成された送風機１００は、送風機１００の回転軸の両端側から空気を吸い込み、送風機１００の回転軸に垂直な方向に空気を吹き出す、両吸込型の遠心送風機である。 In the following explanation, the "rotation shaft of the impeller 200" may also be referred to as the "rotation shaft of the blower 100." The blower 100 configured as described above is a double-suction centrifugal blower that draws in air from both ends of the rotation shaft of the blower 100 and blows out air in a direction perpendicular to the rotation shaft of the blower 100.
　それぞれの送風機１００について、モータ１０１及びシャフト１０２は共通化されている。すなわち、ここで説明する構成例では、３つの送風機１００について、１つのモータ１０１と１本のシャフト１０２とが設けられている。モータ１０１は、それぞれの送風機１００のスクロールケーシング１１０の外部に配置されている。図３に示す例では、モータ１０１は、上下に並ぶ３つの送風機１００のさらに上側に配置されている。シャフト１０２は、モータ１０１の回転駆動力を各送風機１００の羽根車２００のそれぞれに伝達する。送風機１００は、各送風機１００の羽根車２００のそれぞれの回転軸が一致するように配置されている。シャフト１０２は、各送風機１００の羽根車２００のそれぞれの回転軸に沿って設けられている。各送風機１００の羽根車２００のそれぞれの中心は、シャフト１０２に固定されている。 The motor 101 and shaft 102 are common to each blower 100. That is, in the configuration example described here, one motor 101 and one shaft 102 are provided for three blowers 100. The motor 101 is disposed outside the scroll casing 110 of each blower 100. In the example shown in FIG. 3, the motor 101 is disposed above the three blowers 100 that are arranged vertically. The shaft 102 transmits the rotational driving force of the motor 101 to each of the impellers 200 of each blower 100. The blowers 100 are disposed so that the rotation axes of the impellers 200 of each blower 100 coincide with each other. The shaft 102 is provided along the rotation axis of each of the impellers 200 of each blower 100. The center of each of the impellers 200 of each blower 100 is fixed to the shaft 102.
　前述したように、筐体１０の第１側面１５ａには、室外機吹出口１６が形成されている。室外機吹出口１６は、送風機１００の吐出口１１２に合わせて吐出口１１２と同数設けられる。ここで説明する構成例では、３つの送風機１００が設けられ、各送風機１００が１つずつ吐出口１１２を有することで、室外機の全体として計３つの吐出口１１２を有している。そして、筐体１０の第１側面１５ａにも３つの室外機吹出口１６が形成されている。それぞれの室外機吹出口１６の位置及び大きさは、それぞれの吐出口１１２の位置及び大きさに合わせて調整されている。そして、それぞれの吐出口１１２が、それぞれの室外機吹出口１６に配置される。 As described above, the first side surface 15a of the housing 10 has an outdoor unit outlet 16 formed thereon. The outdoor unit outlets 16 are provided in the same number as the outlets 112 of the blowers 100. In the configuration example described here, three blowers 100 are provided, and each blower 100 has one outlet 112, so that the outdoor unit has a total of three outlets 112 as a whole. Three outdoor unit outlets 16 are also formed on the first side surface 15a of the housing 10. The position and size of each outdoor unit outlet 16 are adjusted to match the position and size of each outlet 112. Each outlet 112 is then disposed in its respective outdoor unit outlet 16.
　このようにして、送風機１００の吐出口１１２は、筐体１０の第１側面１５ａの室外機吹出口１６に配置される。また、各送風機１００の吸込口は、筐体１０の上面１３及び底面１４方向に向いて配置されている。つまり、送風機１００の回転軸は上下方向に沿って配置されている。なお、室外機が有する吐出口１１２及び室外機吹出口１６の数は３つに限られず、１つ以上の吐出口１１２及び室外機吹出口１６があればよい。 In this way, the outlet 112 of the blower 100 is arranged at the outdoor unit outlet 16 on the first side 15a of the housing 10. The inlet of each blower 100 is arranged facing the top surface 13 and bottom surface 14 of the housing 10. In other words, the rotation axis of the blower 100 is arranged along the vertical direction. Note that the number of outlets 112 and outdoor unit outlets 16 that the outdoor unit has is not limited to three, and it is sufficient if there is one or more outlets 112 and outdoor unit outlets 16.
　以上のように構成された、この実施の形態に係る冷凍サイクル装置の室外機によれば、室外機のサイズが大型化することなく、気流が熱交換器３０を通過する面積を増大させることが可能であり、室外機外部の静圧が高い場合であっても、高い風量を得ることができ、ひいては低騒音化、低入力化を図ることができる。 The outdoor unit of the refrigeration cycle device according to this embodiment, configured as described above, makes it possible to increase the area through which the airflow passes through the heat exchanger 30 without increasing the size of the outdoor unit, and even when the static pressure outside the outdoor unit is high, a high air volume can be obtained, resulting in lower noise levels and lower input power.
　図６に示すように、羽根車２００の複数の羽根２１０のそれぞれは、ターボ翼部２１１及びシロッコ翼部２１２を有している。ターボ翼部２１１は、羽根車２００の回転軸を中心とする径方向においてシロッコ翼部２１２よりも内周側に設けられる。逆に言えば、シロッコ翼部２１２は、羽根車２００の回転軸を中心とする径方向においてターボ翼部２１１よりも外周側に設けられる。ターボ翼部２１１は、出口角が９０度以下の角度に形成された後向羽根を構成している。シロッコ翼部２１２は、出口角が９０度より大きい角度に形成された前向羽根を構成している。ここで、出口角は、羽根車２００の外径円と羽根２１０の中心線との交点において、羽根２１０の中心線と羽根車２００の外径円の接線とが成す角である。ターボ翼部２１１とシロッコ翼部２１２との境界を、図６中の破線で示す。シロッコ翼部２１２は必ずしも設けられなくともよい。ただし、シロッコ翼部２１２を設けることで、送風機１００の風量を増大させることができる。 As shown in FIG. 6, each of the multiple blades 210 of the impeller 200 has a turbo blade portion 211 and a sirocco blade portion 212. The turbo blade portion 211 is provided on the inner circumferential side of the sirocco blade portion 212 in the radial direction centered on the rotation axis of the impeller 200. In other words, the sirocco blade portion 212 is provided on the outer circumferential side of the turbo blade portion 211 in the radial direction centered on the rotation axis of the impeller 200. The turbo blade portion 211 constitutes a backward blade with an exit angle formed at an angle of 90 degrees or less. The sirocco blade portion 212 constitutes a forward blade with an exit angle formed at an angle greater than 90 degrees. Here, the exit angle is the angle formed by the center line of the blade 210 and the tangent to the outer diameter circle of the impeller 200 at the intersection of the outer diameter circle of the impeller 200 and the center line of the blade 210. The boundary between the turbo blade portion 211 and the sirocco blade portion 212 is indicated by a dashed line in FIG. 6. The sirocco blade portion 212 is not necessarily provided. However, providing the sirocco blade portion 212 can increase the air volume of the blower 100.
　複数の羽根２１０のそれぞれは、内周端部２０４から内周側において、内周側にいくほど主板部２０１の板面からの高さが低くなるように形成されている。そして、ターボ翼部２１１は、この内周端部２０４を含んでいる。なお、内周端部２０４の位置は、図６中の一点鎖線で示されている。 Each of the multiple blades 210 is formed so that the height from the plate surface of the main plate portion 201 decreases the further inward from the inner peripheral end portion 204. The turbo blade portion 211 includes this inner peripheral end portion 204. The position of the inner peripheral end portion 204 is indicated by a dashed line in Figure 6.
　図４に示すように、送風機１００を送風機１００の回転軸に平行な方向から見たときに、ターボ翼部２１１が送風機１００の吸込口から露出している。このようにすることで、ターボ翼部２１１により送風機１００の圧力回復性能を向上でき、さらなる低入力化を図ることが可能である。 As shown in FIG. 4, when the blower 100 is viewed in a direction parallel to the rotation axis of the blower 100, the turbo blade portion 211 is exposed from the intake port of the blower 100. In this way, the turbo blade portion 211 can improve the pressure recovery performance of the blower 100, making it possible to achieve even lower input power.
　次に、この実施の形態に係る室外機の変形例をいくつか説明する。図１に示す構成例では、送風機１００の舌部１１４が筐体１０の背面１２側に配置されていた。これに対し、図７に示す変形例では、送風機１００の舌部１１４が筐体１０の正面１１側に配置されている。これにより、吐出部１１３の正面１１側の周壁は、吐出口１１２に近いほど筐体１０の正面１１に近づくよう配置される。 Next, some modified examples of the outdoor unit according to this embodiment will be described. In the configuration example shown in FIG. 1, the tongue portion 114 of the blower 100 is disposed on the rear surface 12 side of the housing 10. In contrast, in the modified example shown in FIG. 7, the tongue portion 114 of the blower 100 is disposed on the front surface 11 side of the housing 10. As a result, the peripheral wall on the front surface 11 side of the discharge portion 113 is disposed so that the closer it is to the discharge port 112, the closer it is to the front surface 11 of the housing 10.
　このため、吐出口１１２から吹き出す気流は、吐出部１１３の正面１１側の周壁に沿って正面１１側に広がり、側面１５に対して垂直方向よりも正面１１側に傾いた方向になる。一般的に、室外機の筐体１０は、背面１２側に建物等の壁が接近している状態となることが多い。このような変形例によれば、吐出口１１２及び室外機吹出口１６から吹き出す気流が正面１１側に向かい、背面１２側から離れるため、背面１２側にある建物等の壁の影響による圧損増大を抑制し、低騒音、低入力化が可能になる。 As a result, the airflow blown out from the outlet 112 spreads toward the front 11 side along the peripheral wall of the outlet portion 113 on the front 11 side, and is in a direction that is tilted toward the front 11 side rather than perpendicular to the side surface 15. Generally, the outdoor unit housing 10 is often in a state where the rear 12 side is close to a wall of a building or the like. With this type of modification, the airflow blown out from the outlet 112 and the outdoor unit air outlet 16 heads toward the front 11 side and away from the rear 12 side, suppressing the increase in pressure loss caused by the influence of the wall of a building or the like on the rear 12 side, making it possible to achieve low noise and low input.
　また、図８に示す変形例のように、送風機１００の吸込口を、筐体１０の正面１１及び背面１２方向に向いて配置してもよい。この場合、送風機１００の回転軸は前後方向に沿って配置されている。このような変形例によれば、送風機１００のベルマウス１１１（吸込口）が熱交換器３０に向けて配置されるため、送風機１００の吸込効率を向上し、風量を増大させることができる。 Also, as in the modified example shown in FIG. 8, the intake port of the blower 100 may be arranged facing the front 11 and rear 12 directions of the housing 10. In this case, the rotation axis of the blower 100 is arranged along the front-to-rear direction. According to this modified example, the bell mouth 111 (intake port) of the blower 100 is arranged facing the heat exchanger 30, thereby improving the intake efficiency of the blower 100 and increasing the air volume.
　図１に示す構成例では、機械室２１が送風機室２２の側方に配置されていた。しかしながら、筐体１０における機械室２１と送風機室２２との相対位置関係はこれに限られない。図９に示すように、機械室２１を送風機室２２の下方に配置してもよい。 In the configuration example shown in FIG. 1, the machine room 21 is disposed to the side of the blower room 22. However, the relative positional relationship between the machine room 21 and the blower room 22 in the housing 10 is not limited to this. As shown in FIG. 9, the machine room 21 may be disposed below the blower room 22.
　機械室２１を送風機室２２の下方に配置する場合、筐体１０の上側において送風機室２２が第１側面１５ａから第２側面１５ｂにわたって配置される。したがって、この場合、室外機吹出口１６及び送風機１００の吐出口１１２を第１側面１５ａだけでなく第２側面１５ｂに配置してもよい。 When the machine chamber 21 is disposed below the blower chamber 22, the blower chamber 22 is disposed on the upper side of the housing 10, from the first side surface 15a to the second side surface 15b. Therefore, in this case, the outdoor unit outlet 16 and the outlet 112 of the blower 100 may be disposed not only on the first side surface 15a but also on the second side surface 15b.
　例えば、図１０に示す構成では、送風機１００のスクロールケーシング１１０に、第１吐出口１１２ａ及び第２吐出口１１２ｂの２つの吐出口１１２が形成されている。したがって、１つの送風機１００は、吐出口１１２として第１吐出口１１２ａ及び第２吐出口１１２ｂを有している。図示の例では、１つの送風機１００のスクロールケーシング１１０において、第１吐出口１１２ａ及び第２吐出口１１２ｂが、羽根車２００に対して互いに反対側になる位置に設けられている。そして、送風機１００の第１吐出口１１２ａは、筐体１０の第１側面１５ａに配置されている。また、送風機１００の第２吐出口１１２ｂは、筐体１０の第２側面１５ｂに配置されている。このようにすることで、吐出口１１２の数を増やして風量を増大させることができるため、低騒音、低入力化が可能になる。 For example, in the configuration shown in FIG. 10, two outlets 112, a first outlet 112a and a second outlet 112b, are formed in the scroll casing 110 of the blower 100. Therefore, one blower 100 has the first outlet 112a and the second outlet 112b as the outlets 112. In the illustrated example, in the scroll casing 110 of one blower 100, the first outlet 112a and the second outlet 112b are provided at positions on opposite sides of the impeller 200. The first outlet 112a of the blower 100 is disposed on the first side 15a of the housing 10. The second outlet 112b of the blower 100 is disposed on the second side 15b of the housing 10. In this way, the number of outlets 112 can be increased to increase the air volume, which makes it possible to reduce noise and input.
　本開示は、筐体の送風機室内に両吸込型の遠心送風機を備えた冷凍サイクル装置の室外機に利用できる。 This disclosure can be used in the outdoor unit of a refrigeration cycle device that has a double-suction centrifugal blower in the blower chamber of the housing.
　１０　　筐体
　１１　　正面
　１２　　背面
　１３　　上面
　１４　　底面
　１５　　側面
　１５ａ　第１側面
　１５ｂ　第２側面
　１６　　室外機吹出口
　２１　　機械室
　２２　　送風機室
　３０　　熱交換器
　３１　　第１熱交換器
　３２　　第２熱交換器
１００　　送風機
１０１　　モータ
１０２　　シャフト
１１０　　スクロールケーシング
１１１　　ベルマウス
１１２　　吐出口
１１２ａ　第１吐出口
１１２ｂ　第２吐出口
１１３　　吐出部
１１４　　舌部
２００　　羽根車
２０１　　主板部
２０４　　内周端部
２１０　　羽根
２１１　　ターボ翼部
２１２　　シロッコ翼部 REFERENCE SIGNS LIST 10 Housing 11 Front 12 Rear 13 Top 14 Bottom 15 Side 15a First side 15b Second side 16 Outdoor unit outlet 21 Machine room 22 Blower room 30 Heat exchanger 31 First heat exchanger 32 Second heat exchanger 100 Blower 101 Motor 102 Shaft 110 Scroll casing 111 Bell mouth 112 Discharge port 112a First discharge port 112b Second discharge port 113 Discharge section 114 Tongue section 200 Impeller 201 Main plate section 204 Inner circumferential end section 210 Blade 211 Turbo blade section 212 Sirocco blade section

Claims (5)

  1. 　内部に圧縮機が収容された機械室と、前記機械室と区画され内部に熱交換器及び前記熱交換器の２次側に配置された送風機が収容された送風機室とが形成された筐体を備え、
    　前記送風機は、
    　回転軸を中心とする周方向に配列した複数の羽根を有する羽根車と、
    　吸込口となる２つのベルマウスと吐出口とが形成され、内部に前記羽根車が配置されたスクロールケーシングと、を備えた両吸込型の遠心送風機であり、
    　前記筐体は、正面と、前記正面に対向する背面と、前記正面と前記背面とを接続する側面とを有し、
    　前記熱交換器は、
    　前記送風機室内における前記正面側に配置された第１熱交換器と、
    　前記送風機室内における前記背面側に配置された第２熱交換器と、を有し、
    　前記送風機は、前記送風機室内における前記第１熱交換器と前記第２熱交換器との間に配置され、
    　前記吐出口は、前記筐体の前記側面に配置された冷凍サイクル装置の室外機。     The compressor includes a housing having a machine chamber in which a compressor is housed, and a fan chamber that is partitioned from the machine chamber and houses a heat exchanger and a fan disposed on a secondary side of the heat exchanger,
    The blower is
    an impeller having a plurality of blades arranged in a circumferential direction around a rotation axis;
    a scroll casing in which two bell mouths serving as suction ports and a discharge port are formed, and in which the impeller is disposed,
    the housing has a front surface, a rear surface opposite to the front surface, and a side surface connecting the front surface and the rear surface,
    The heat exchanger includes:
    A first heat exchanger disposed on the front side in the blower chamber;
    a second heat exchanger disposed on the rear side in the blower chamber,
    The blower is disposed between the first heat exchanger and the second heat exchanger in the blower chamber,
    The discharge port is an outdoor unit of a refrigeration cycle device arranged on the side surface of the housing.
  2. 　前記スクロールケーシングは、回転する前記羽根車により生成された気流を前記吐出口に導く吐出部を備え、
    　前記吐出部の前記正面側の周壁は、前記吐出口に近いほど前記筐体の前記正面に近づくよう配置される請求項１に記載の冷凍サイクル装置の室外機。     The scroll casing includes a discharge portion that guides the airflow generated by the rotating impeller to the discharge port,
    The outdoor unit of a refrigeration cycle apparatus according to claim 1 , wherein the peripheral wall on the front side of the discharge portion is disposed so as to approach the front surface of the housing as it approaches the discharge port.
  3. 　前記羽根車の複数の前記羽根のそれぞれは、出口角が９０度以下の角度に形成された後向羽根を構成するターボ翼部を有し、
    　前記送風機を前記回転軸に平行な方向から見たときに、前記ターボ翼部が前記吸込口から露出する請求項１又は請求項２に記載の冷凍サイクル装置の室外機。     Each of the plurality of blades of the impeller has a turbo vane portion constituting a backward inverted blade having an outlet angle of 90 degrees or less,
    3. The outdoor unit of a refrigeration cycle apparatus according to claim 1, wherein the turbo impeller is exposed from the suction port when the blower is viewed in a direction parallel to the rotation shaft.
  4. 　前記送風機の前記吸込口は、前記筐体の前記正面及び前記背面方向に向いて配置される請求項１から請求項３のいずれか一項に記載の冷凍サイクル装置の室外機。 The outdoor unit of a refrigeration cycle device according to any one of claims 1 to 3, wherein the air intake of the blower is arranged facing the front and rear directions of the housing.
  5. 　前記筐体は、前記側面として第１側面と前記第１側面に対向する第２側面とを有し、
    　１つの前記送風機は、前記吐出口として第１吐出口及び第２吐出口を有し、
    　前記第１吐出口は、前記筐体の前記第１側面に配置され、
    　前記第２吐出口は、前記筐体の前記第２側面に配置され、
    　前記機械室は、前記送風機室の下方に配置される請求項１から請求項４のいずれか一項に記載の冷凍サイクル装置の室外機。     the housing has a first side surface and a second side surface opposed to the first side surface,
    One of the blowers has a first outlet and a second outlet as the outlets,
    the first outlet is disposed on the first side surface of the housing,
    the second outlet is disposed on the second side surface of the housing,
    The outdoor unit of a refrigeration cycle apparatus according to any one of claims 1 to 4, wherein the machine chamber is disposed below the blower chamber.
PCT/JP2022/045304 2022-12-08 2022-12-08 Outdoor unit of refrigeration cycle device WO2024122026A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50109948U (en) * 1974-02-15 1975-09-08
JPS63144524U (en) * 1987-03-14 1988-09-22
JPH0727369A (en) * 1993-07-15 1995-01-27 Mitsubishi Heavy Ind Ltd Outdoor machine for air conditioner
CN205299776U (en) * 2016-01-15 2016-06-08 珠海格力电器股份有限公司 Outdoor machine for air conditioner
JP2020204328A (en) * 2019-04-25 2020-12-24 三菱電機株式会社 Impeller, multi-blade blower and air conditioner
CN215982930U (en) * 2021-09-26 2022-03-08 广东美的制冷设备有限公司 Air conditioner outdoor unit and air conditioner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50109948U (en) * 1974-02-15 1975-09-08
JPS63144524U (en) * 1987-03-14 1988-09-22
JPH0727369A (en) * 1993-07-15 1995-01-27 Mitsubishi Heavy Ind Ltd Outdoor machine for air conditioner
CN205299776U (en) * 2016-01-15 2016-06-08 珠海格力电器股份有限公司 Outdoor machine for air conditioner
JP2020204328A (en) * 2019-04-25 2020-12-24 三菱電機株式会社 Impeller, multi-blade blower and air conditioner
CN215982930U (en) * 2021-09-26 2022-03-08 广东美的制冷设备有限公司 Air conditioner outdoor unit and air conditioner

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