WO2020208669A1 - Outdoor unit for air conditioner, and air conditioner - Google Patents

Outdoor unit for air conditioner, and air conditioner Download PDF

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Publication number
WO2020208669A1
WO2020208669A1 PCT/JP2019/015263 JP2019015263W WO2020208669A1 WO 2020208669 A1 WO2020208669 A1 WO 2020208669A1 JP 2019015263 W JP2019015263 W JP 2019015263W WO 2020208669 A1 WO2020208669 A1 WO 2020208669A1
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WO
WIPO (PCT)
Prior art keywords
outdoor
air
housing
outdoor unit
air conditioner
Prior art date
Application number
PCT/JP2019/015263
Other languages
French (fr)
Japanese (ja)
Inventor
岩瀬　拓
佐藤　庸子
Original Assignee
日立ジョンソンコントロールズ空調株式会社
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.)
Filing date
Publication date
Application filed by 日立ジョンソンコントロールズ空調株式会社 filed Critical 日立ジョンソンコントロールズ空調株式会社
Priority to JP2020527970A priority Critical patent/JP6808098B1/en
Priority to CN201980093458.7A priority patent/CN113518885B/en
Priority to PCT/JP2019/015263 priority patent/WO2020208669A1/en
Publication of WO2020208669A1 publication Critical patent/WO2020208669A1/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
    • F24F1/20—Electric components for separate outdoor units
    • F24F1/22—Arrangement or mounting thereof
    • 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
    • F24F1/20—Electric components for separate outdoor units
    • F24F1/24—Cooling of electric components
    • 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

Definitions

  • the present invention relates to an outdoor unit for an air conditioner and an air conditioner.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2013-79807
  • This publication states, "The outdoor unit body, the heat exchanger housed in the outdoor unit body, the blower fan provided on the upper part of the outdoor unit body, and the air sucked from the side surface of the outdoor unit body are blown upward.
  • a ventilation member that surrounds the outer circumference of the fan and forms an air outlet, and an electrical component that is housed in the outdoor unit body and is placed in the opening between one side end and the other side end of the heat exchanger.
  • the electrical component unit is provided so as to straddle the lower end of the ventilation member in the vertical direction, and the electrical component unit is arranged on the lateral side of the ventilation member above the lower end of the ventilation member.
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2013-292222
  • This ventilation guide is provided with a wall having a plurality of holes formed in the middle of the air passage, and a stray air passage bent at least once above and below is formed, and an electrical box.
  • the direction in which the outside air is blown out at the inlet is bent approximately 90 degrees with respect to the direction in which the outside air is sucked in at the suction port.
  • Patent Documents 1 and 2 describe a technique for cooling an electrical component unit and an electrical box by blowing air in an outdoor unit of an air conditioner.
  • the techniques of Patent Documents 1 and 2 directly blow air for cooling the electrical component unit and the electrical box by driving an outdoor fan. Therefore, the outdoor fan must blow not only the outside air that ventilates the outdoor heat exchanger, but also the air that cools the electrical component unit and the electrical component box. Therefore, there is a problem that directly blowing air for cooling the electrical component unit or the electrical box leads to an increase in the load on the outdoor fan.
  • an object of the present invention is to provide an outdoor unit for an air conditioner and an air conditioner capable of suppressing an increase in the load of an outdoor fan.
  • the present invention presents a housing, an outdoor heat exchanger provided in the housing for heat exchange between outside air and a refrigerant, an outdoor fan provided in the housing, and an outer periphery of the outdoor fan.
  • a bell mouth that surrounds the bell mouth to form an air outlet by the outdoor fan, electrical components provided in a space between the side of the bell mouth and the inside of the housing, and an inlet and an outlet are the housing. It is provided with an opening to the outside of the bell mouth and has a flow path through which air passes through the electrical component or a member in contact with the electrical component, and the outlet is adjacent to the bell mouth and the bell mouth blows out air. It is characterized in that it is arranged facing the same direction as the direction.
  • FIG. 2 is a cross-sectional view taken along the line AA of FIG. It is a vertical sectional view of the upper part of the outdoor unit which concerns on Example 2 of this invention. It is a vertical sectional view of the upper part of the outdoor unit which concerns on Example 3 of this invention. It is a vertical sectional view of the upper part of the outdoor unit which concerns on Example 4 of this invention. It is a top view of the outdoor unit which concerns on Example 5 of this invention.
  • Patent Document 2 which is also an upper blow-out type outdoor unit
  • the electrical box is cooled only by the outside air that does not pass through the heat exchanger, so that the electrical box can be sufficiently cooled by the relatively low temperature outside air. ..
  • the electrical box does not exist on the upstream side of the outdoor fan (downstream side of the heat exchanger)
  • the pressure loss of the air on the upstream side does not occur, and the noise does not increase.
  • the air after cooling the electrical box is directly discharged to the outside of the bell mouth by the drive of the outdoor fan. Therefore, even with this technology, the load on the outdoor fan increases.
  • Patent Documents 1 and 2 have a problem that the fan directly creates the flow of air for cooling the electrical component box and the electrical component box, which leads to an increase in the load of the fan. ..
  • examples of the present invention in which such a defect is solved will be described.
  • FIG. 1 is a system diagram showing the overall configuration of the air conditioner 100 according to the first embodiment.
  • the air conditioner 100 is composed of a compressor 131, a four-way valve 132, an indoor heat exchanger 101, an expansion valve 103, an outdoor heat exchanger 12, and the like, and each member is connected by a pipe 121.
  • the indoor heat exchanger 101 and the indoor fan 102 are provided in the indoor unit 108.
  • the compressor 131, the four-way valve 132, the expansion valve 103, the outdoor heat exchanger 12, and the outdoor fan 13 are provided in the outdoor unit 1 which is the outdoor unit for the air conditioner according to the embodiment of the present invention.
  • the expansion valve 103 may be provided in the indoor unit 108, or may be provided in both the indoor unit 108 and the outdoor unit 1.
  • the compressor 131 is a device that compresses a low-temperature low-pressure gas refrigerant by driving a compressor motor and discharges it as a high-temperature high-pressure gas refrigerant.
  • the four-way valve 132 is a valve that switches the flow path of the refrigerant according to the operation mode of the air conditioner 100.
  • the expansion valve 103 is a valve that reduces the pressure of the refrigerant condensed by the "condenser" (one of the outdoor heat exchanger 12 and the indoor heat exchanger 101 depending on the type of air conditioning operation). The refrigerant decompressed by the expansion valve 103 is guided to an "evaporator" (the other of the outdoor heat exchanger 12 and the indoor heat exchanger 101 depending on the type of air conditioning operation).
  • the indoor heat exchanger 101 is a heat exchanger that exchanges heat between the refrigerant flowing through the outdoor heat exchanger 12 and the indoor air (air in the air conditioning target space) sent from the indoor fan 102.
  • the indoor fan 102 is a fan that sends indoor air to the indoor heat exchanger 101, and is installed in the vicinity of the indoor heat exchanger 101.
  • the outdoor heat exchanger 12 is a heat exchanger that exchanges heat between the refrigerant flowing through the heat transfer tube and the outdoor air sent from the outdoor fan 13.
  • the outdoor fan 13 is a fan that sends outdoor air to the outdoor heat exchanger 12.
  • the refrigeration cycle of the heat pump type air conditioner 100 will be described with reference to FIG. 1 by taking the heating operation as an example.
  • the flow of the refrigerant during the heating operation is indicated by the solid arrow 141.
  • the compressor 131 is a device that compresses the gas refrigerant, and the gas refrigerant that has been in a high temperature / high pressure state by the compressor 131 is sent to the indoor heat exchanger 101 (condenser) in the indoor unit 108 via the four-way valve 132. Be guided.
  • the high-temperature refrigerant flowing through the indoor heat exchanger 101 dissipates heat to the indoor air supplied from the indoor fan 102, thereby warming the room.
  • the gas refrigerant that has been deprived of heat gradually liquefies in the outdoor heat exchanger 12, and the liquid refrigerant in the overcooled state, which is several ° C. lower than the saturation temperature, flows out from the outlet of the indoor heat exchanger 101. To do.
  • the liquid refrigerant flowing out of the indoor unit 108 becomes a gas-liquid two-phase refrigerant in a low temperature / low pressure state due to the expansion action when passing through the expansion valve 103.
  • This low-temperature / low-pressure gas-liquid two-phase refrigerant is guided to the outdoor heat exchanger 12 (evaporator) in the outdoor unit 1.
  • the refrigerant is gasified and returns to the compressor 131 in a state where the degree of superheat has increased by about several ° C.
  • the heating operation of the air conditioner 100 is realized by the series of refrigeration cycles described above.
  • the flow of the refrigerant during the cooling operation is indicated by the broken line arrow 142.
  • the four-way valve 132 is switched to form a refrigeration cycle in which the refrigerant circulates in the direction of the dashed arrow 142.
  • the indoor heat exchanger 101 acts as an evaporator
  • the outdoor heat exchanger 12 acts as a condenser.
  • the cooling operation of the air conditioner 100 is realized by this series of refrigeration cycles.
  • the air conditioner 100 may be realized as a device dedicated to cooling operation or as a device dedicated to heating operation. In these cases, the four-way valve 132 becomes unnecessary.
  • FIG. 2 is a vertical sectional view of the outdoor unit 1 according to the first embodiment
  • FIG. 3 is a sectional view taken along the line AA of FIG.
  • FIG. 2 shows the arrangement members of the electric box storage space 33, which will be described later, shifted for convenience so that the structure of the arrangement members and the like in the electric box storage space 33 can be easily understood.
  • the illustration of FIG. 3 is correct as the arrangement position of the electric boxes 34a and 34b. The placement position is appropriately determined according to the purpose and the like. Further, with respect to FIGS. 2 and 3, the dimensions and the like are described in an exaggerated or dwarfed manner as appropriate.
  • the outdoor unit 1 is an upper blow-out type outdoor unit, and includes a housing 11, an outdoor heat exchanger 12, an outdoor fan 13, a bell mouth 14, electric boxes 34a, 34b, and the like.
  • the housing 11 is a rectangular parallelepiped case arranged on the base 19.
  • An outdoor heat exchanger 12 is provided on the inner side surface of the housing 11.
  • the outdoor heat exchanger 12 is a device that exchanges heat between the outside air and the refrigerant.
  • a compressor 131 and an accumulator 17 (not shown in FIG. 1) are installed in the housing 11 on the base 19.
  • a shroud 21 is installed on the upper part of the housing 11.
  • the outdoor fan 13 is provided on the upper part of the housing 11 so that the air blowing direction is upward through the shroud 21. Then, the outdoor fan 13 is driven by a motor 23 installed in a motor clamp 22 fixed to the shroud 21.
  • the bell mouth 14 is a member having a cylindrical shape in a top view and is provided so as to surround the outer periphery of the outdoor fan 13, and is provided on the upper portion of the housing 11.
  • the bell mouth 14 functions as an air outlet by the outdoor fan 13.
  • the bell mouth 14 is a duct type having a long dimension in the rotation axis direction of the outdoor fan 13 in order to improve the efficiency of the outdoor fan 13.
  • the bell mouth 14 is surrounded and supported by a rectangular side cover 31 which is formed of sheet metal and forms a part of the housing 11 in a top view. Further, the upper portion of the side cover 31 is partially closed by the upper cover 32.
  • a part of the space covered by the side cover 31, the upper cover 32 and the bell mouth 14 forms the electric box storage space 33.
  • the electric box storage spaces 33 are provided at two corners of the side cover 31 (FIG. 3).
  • Electric boxes 34a and 34b are stored in each electric box storage space 33, respectively.
  • inverter boards which are electrical components that generate high heat, are housed.
  • There are basically two types of the inverter board which are the inverter board 35a (first board) for driving the compressor 131 and the inverter board 35b (second board) for driving the outdoor fan 13.
  • the inverter board 35a is housed in the electric box 34a
  • the inverter board 35b is housed in the electric box 34b.
  • Heat sinks 36a and 36b which are members in contact with the inverter boards 35a and 35b and cool the inverter boards 35a and 35b, are connected to the outside of the electric boxes 34a and 34b, respectively.
  • the electric boxes 34a and 34b store the space between the bell mouth 14 and the side cover 31 (housing 11), which was the dead space in FIG. 7, as the electric box storage space 33. Effectively use it as a place. Then, the electric box 34a provided with the inverter board 35a and the heat sink 36a and the electric box 34b provided with the inverter board 35b and the heat sink 36b are divided and arranged on the side of the bell mouse 4.
  • an inlet 41 serving as an opening for communicating the outside air and the electric box storage space 33 is provided on the side cover 31 which is also a part of the housing 11. There is. Further, above each of the electric boxes 34a and 34b, there is an opening for communicating the outside air and the electric box storage space 33 between the end portion 14a of the bell mouth 14 and the upper cover 32 which is a part of the housing 11.
  • the outlet 42 is provided. As a result, the inlet 41 and the outlet 42 as shown by the arrow a are connected, and air flow paths passing through the electric box storage space 33 are formed (FIG. 2). Heat sinks 36a and 36b are located in the middle of each of the flow paths, respectively.
  • Each outlet 42 is arranged adjacent to the outer surface of the bell mouth 14 so that the air discharged from the outlet 42 flows toward the same direction (upper side in FIG. 1) as the direction in which the bell mouth 14 blows air. There is.
  • the shape of the side cover 31 and the housing 11 as viewed from above is substantially square.
  • the center 13a of the rotation axis of the outdoor fan 13 is biased upward in the drawing in FIG. That is, in FIG. 3, the distance from the sheet metal 31a of the side cover 31 corresponding to the upper side to the sheet metal 31b of the side cover 31 corresponding to the lower side is Wu. Further, the distance from the sheet metal 31a to the center of the rotation axis 13a is Wf. In this case, "Wf ⁇ Wu / 2". The action and effect of the first embodiment will be described.
  • the outside air By driving the outdoor fan 13, the outside air passes through the outdoor heat exchanger 12 and flows into the housing 11. At this time, the outside air and the refrigerant exchange heat.
  • the outside air that has flowed into the housing 11 is blown out above the outdoor unit 1 via the bell mouth 14 and discharged.
  • the flow of outside air in this case is shown by arrow b in FIG.
  • the air around the outlet 42 adjacent to the bell mouth 14 is also indicated by the arrow a due to the viscous action of the outside air flowing as shown by the arrow b. It flows like this and is caught in the flow of outside air indicated by arrow b.
  • Such a phenomenon is called the ejector effect. Due to this ejector effect or the Coanda effect caused by the jet flowing in the external fluid, the outside air is taken in from the inlet 41 and discharged from the outlet 42, and the air flow as shown by the arrow a is generated.
  • the air flow of the arrow a passes around the heat sinks 36a and 36b to cool the heat sinks 36a and 36b, and thus the inverter boards 35a and 35b. Then, it is discharged from the outlet 42.
  • the air required for cooling the inverter boards 35a and 35b that is, the air flow of the arrow a does not pass through the outdoor fan 13.
  • the air flow of the arrow b passing through the outdoor fan 13 is only the one in which the heat exchange is performed in the outdoor heat exchanger 12. Therefore, the air volume discharged from the bell mouth 14 can be reduced by driving the outdoor fan 13, the power of the outdoor fan 13 can be reduced by that amount, and the load of the outdoor unit 1 can be reduced and energy saving can be contributed. Further, since the air volume from the bell mouth 14 is reduced, the noise generated from the outdoor fan 13 can be reduced, which can contribute to the noise reduction of the outdoor unit 1.
  • the cooling performance of the inverter boards 35a and 35b is improved, which can contribute to the improvement of the reliability of the outdoor unit 1.
  • the outdoor heat exchanger 12 acts as a condenser, so that the air of the arrow b passing through the outdoor heat exchanger 12 has a higher temperature than the outside air.
  • the air of arrow a that does not pass through the outdoor heat exchanger 12 does not have such a situation.
  • the heat sinks 36a and 36b can be miniaturized, which can contribute to the reduction of the manufacturing cost of the outdoor unit 1.
  • the pressure loss is reduced, the air volume blown by the outdoor fan 13 is increased, and the heat exchange of the outdoor heat exchanger 12 is performed. It can contribute to the increase in performance.
  • the inverter boards 35a and 35b in separate electric box storage spaces 33, a large space for storing the inverter boards 35a and 35b can be taken. Further, the rotation axis center 13a of the outdoor fan 13 is biased upward in FIG. As a result, the electric box storage space 33 for accommodating the inverter boards 35a and 35b can be widened, and a large space for accommodating the inverter boards 35a and 35b can be taken.
  • the volume of the electric boxes 34a and 34b can be increased, and the degree of freedom in accommodating and arranging the inverter boards 35a and 35b and the heat sinks 36a and 36b. Can be increased.
  • the outdoor unit is not limited to the upper blow-out type and may be a horizontal blow-out type or the like.
  • FIG. 4 is a vertical cross-sectional view of the upper part of the outdoor unit 1A according to the second embodiment of the present invention.
  • the outdoor unit 1A of the second embodiment is different from the outdoor unit 1 of the first embodiment in that the heat sinks 36a and 36b are installed close to the outlet 42 of the air flow path indicated by the arrow a.
  • the flow velocity of the air flow path indicated by the arrow a is high in the vicinity of the outlet 42 due to the influence of the air flow of the arrow b. Therefore, by installing the heat sinks 36a and 36b in the vicinity of the outlet 42, the cooling effect of the heat sinks 36a and 36b and eventually the inverter boards 35a and 35b can be enhanced.
  • FIG. 5 is a vertical cross-sectional view of the upper part of the outdoor unit 1B according to the third embodiment of the present invention.
  • the same reference numerals as those of the first embodiment are used, and detailed illustration and description thereof will be omitted. The dimensions of the figure are exaggerated and dwarfed. This point is the same in the other figures relating to the following examples.
  • the outdoor unit 1B of the third embodiment is different from the outdoor unit 1 of the first embodiment in that the heat sinks 36a and 36b are installed near the inlet 41 of the air flow path indicated by the arrow a, respectively.
  • the temperature of the outside air taken in from the inlet 41 is lower than that of the inlet 41 of the flow path indicated by the arrow a. Therefore, by installing the heat sinks 36a and 36b in the vicinity of the inlet 41, the cooling effect of the heat sinks 36a and 36b and eventually the inverter boards 35a and 35b can be enhanced.
  • FIG. 6 is a vertical cross-sectional view of the upper part of the outdoor unit 1C according to the fourth embodiment of the present invention.
  • the same reference numerals as those in the first embodiment are used for the members in which the outdoor unit 1C is common to the outdoor unit 1 of the first embodiment, and detailed illustration and description thereof will be omitted.
  • the outdoor unit 1C of the fourth embodiment is different from the outdoor unit 1 of the first embodiment in that the heat sinks 36a and 36b are not provided. Further, in the vicinity of the inlet 41 in the housings of the electric boxes 34a and 34b, inlets 34a1 and 34b1 communicating with the inside of the housing and the inlet 41 are provided, respectively.
  • outlets 34a2 and 34b2 that communicate the inside of the housing and the outlet 42 are provided, respectively.
  • a closing plate 51 is provided between the electric boxes 34a and 34b and the bell mouth 14, respectively.
  • the closing plate 51 is a member that closes the flow path of the arrow a in the first embodiment.
  • the inverter boards 35a and 35b can be directly cooled by the flow of the outside air indicated by the arrow c. Therefore, according to the fourth embodiment, the manufacturing cost of the outdoor unit 1C can be reduced by eliminating the need for the heat sinks 36a and 36b.
  • FIG. 7 is a top view of the outdoor unit 1D according to the fourth embodiment of the present invention.
  • the same reference numerals as those in the first embodiment are used for the members in which the outdoor unit 1D is common to the outdoor unit 1 of the first embodiment, and detailed illustration and description thereof will be omitted.
  • the difference between Example 5 and Example 1 is the following points.
  • the side cover 31 of the outdoor unit 1D and the housing 11 have a rectangular shape when viewed from above, and two outdoor fans 13 and a bell mouth 14 are housed in the housing 11 side by side in the longitudinal direction thereof.
  • Each electric box storage space 33 is provided inside the side cover 31 at each intermediate position between the two long sides in a rectangular shape with the side cover 31 viewed from above.
  • FIG. 1 The side cover 31 of the outdoor unit 1D and the housing 11 have a rectangular shape when viewed from above, and two outdoor fans 13 and a bell mouth 14 are housed in the housing 11 side by side in the longitudinal direction thereof.
  • Each electric box storage space 33 is provided inside the side cover 31
  • the positions of the rotation shafts 13a of each outdoor fan 13 are arranged closer to both ends of the rectangular shape than the central portion of the rectangular shape. That is, assuming that the length of the rectangle in the longitudinal direction is Lu and the length from the rotation shaft 13a of each outdoor fan 13 to the nearest end of the rectangle in the longitudinal direction is Lf, it is called "Lf ⁇ Lu / 4". The relationship holds. According to the fifth embodiment, since the positions of the rotating shafts 13a of each outdoor fan 13 are set as described above, the volumes of the electric boxes 34a and 34b can be increased, and the inverter boards 35a and 35b and the heat sinks 36a and 36b can be increased. The degree of freedom of storage and placement of the inverter can be increased.
  • the present invention is not limited to the above-mentioned examples, and includes various modifications.
  • the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to those having all the described configurations.
  • it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. It is also possible to add / delete / replace a part of the configuration of each embodiment with another configuration.
  • Outdoor unit (outdoor unit for air conditioner) 11 Housing 12 Outdoor heat exchanger 13 Outdoor fan 13a Rotating shaft 14 Bellmouth 31 Side cover (housing) 35a Inverter board (electrical components, first board) 35b Inverter board (electrical components, second board) 36a, 36b heat sink (member in contact with electrical components) 41 Inlet 42 Outlet 100 Air conditioner 101 Indoor heat exchanger 102 Indoor fan 103 Expansion valve 131 Compressor a Flow path

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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

The invention comprises: a housing (11) having a rectangular parallelepiped shape; an outdoor heat exchanger (12) that is provided to the housing (11) and exchanges heat between outside air and a refrigerant; an outdoor fan (13) provided to the housing (11); a bell mouth (14) that surrounds the outer periphery of the outdoor fan (13) and forms an opening for blowing out air by the outdoor fan (13); an inverter substrate (35a, 35b) provided in a space between the lateral side of the bell mouth (14) and the inner side of a side surface cover (31) which constitutes the housing; and a flow path (a) through which air passing the inverter substrate (35a, 35b) or a heat sink (36a, 36b) flows, the flow path being provided to the side surface cover (31) and having an inlet (41) and an outlet (42) which are opened toward the outside. The outlet (42) is arranged adjacent to the bell mouth (14), and is oriented toward the side in the same direction as the direction in which the bell mouth (14) blows out air.

Description

空気調和機用室外機及び空気調和機Outdoor unit for air conditioner and air conditioner
　本発明は、空気調和機用室外機及び空気調和機に関する。 The present invention relates to an outdoor unit for an air conditioner and an air conditioner.
　本技術分野の背景技術として、特開平２０１３－７９８０７号公報（特許文献１）がある。この公報には、「室外機本体と、室外機本体に収容された熱交換器と、室外機本体の上部に設けられ、室外機本体の側面から吸い込んだ空気を上方へ吹き出す送風ファンと、送風ファンの外周を囲い、空気の吹き出し口を形成する通風部材と、室外機本体に収容され、熱交換器における一の側端部と他の側端部との間の開口部に配置された電装品ユニットとを備え、電装品ユニットが、通風部材の下端を上下方向に跨いで設けられており、通風部材の下端よりも上側において、電装品ユニットが通風部材の水平方向外側に配置されている。」と記載されている（要約参照）。 As a background technology in this technical field, there is Japanese Patent Application Laid-Open No. 2013-79807 (Patent Document 1). This publication states, "The outdoor unit body, the heat exchanger housed in the outdoor unit body, the blower fan provided on the upper part of the outdoor unit body, and the air sucked from the side surface of the outdoor unit body are blown upward. A ventilation member that surrounds the outer circumference of the fan and forms an air outlet, and an electrical component that is housed in the outdoor unit body and is placed in the opening between one side end and the other side end of the heat exchanger. The electrical component unit is provided so as to straddle the lower end of the ventilation member in the vertical direction, and the electrical component unit is arranged on the lateral side of the ventilation member above the lower end of the ventilation member. "(See summary).
　また、本技術分野の別の背景技術として、特開平２０１３－２９２２２号公報（特許文献２）がある。この公報には、「電装箱、それを支持するフレームおよび電装箱の外面を覆う正面パネルによって閉じた空間を形成し、この閉じた空間の吸込み口の下流に、外気を電装箱に導く風路を備えた通風ガイドを設置する。この通風ガイドは、風路の途中に複数の穴が形成された壁が設けられ、上方および下方に少なくとも１回折れ曲がった迷走風路が形成され、かつ電装箱導入口における外気の噴出し方向が吸込み口における外気の吸込み方向に対し略９０度曲がっている。」と記載されている（要約参照）。 Further, as another background technology in this technical field, there is Japanese Patent Application Laid-Open No. 2013-292222 (Patent Document 2). In this publication, "an air passage that forms a closed space by an electrical box, a frame that supports it, and a front panel that covers the outer surface of the electrical box, and guides outside air to the electrical box downstream of the suction port of this closed space. This ventilation guide is provided with a wall having a plurality of holes formed in the middle of the air passage, and a stray air passage bent at least once above and below is formed, and an electrical box. The direction in which the outside air is blown out at the inlet is bent approximately 90 degrees with respect to the direction in which the outside air is sucked in at the suction port. "(See summary).
特開２０１３－７９８０７号公報Japanese Unexamined Patent Publication No. 2013-79807 特開２０１３－２９２２２号公報Japanese Unexamined Patent Publication No. 2013-292222
　前記特許文献１，２には、空気調和機の室外機において、電装品ユニットや電装箱を送風によって冷却する技術が記載されている。しかし、特許文献１，２の技術は、電装品ユニットや電装箱を冷却する空気を直接室外ファンの駆動によって送風している。そのため、室外ファンは室外熱交換器に通風する外気のみならず、電装品ユニットや電装箱を冷却する空気も送風しなければならない。そのため、電装品ユニットや電装箱を冷却する空気を直接送風することが室外ファンの負荷の増大につながるという不具合がある。 Patent Documents 1 and 2 describe a technique for cooling an electrical component unit and an electrical box by blowing air in an outdoor unit of an air conditioner. However, the techniques of Patent Documents 1 and 2 directly blow air for cooling the electrical component unit and the electrical box by driving an outdoor fan. Therefore, the outdoor fan must blow not only the outside air that ventilates the outdoor heat exchanger, but also the air that cools the electrical component unit and the electrical component box. Therefore, there is a problem that directly blowing air for cooling the electrical component unit or the electrical box leads to an increase in the load on the outdoor fan.
　そこで、本発明は、室外ファンの負荷の増大を抑制することができる空気調和機用室外機及び空気調和機を提供することを課題とする。 Therefore, an object of the present invention is to provide an outdoor unit for an air conditioner and an air conditioner capable of suppressing an increase in the load of an outdoor fan.
　上記課題を解決するため、本発明は、筐体と、前記筐体に設けられ外気と冷媒とを熱交換する室外熱交換器と、前記筐体に設けられる室外ファンと、前記室外ファンの外周を囲い前記室外ファンによる空気の吹出し口を形成するベルマウスと、前記ベルマウスの側方と前記筐体の内側との間の空間に設けられた電装品と、入口と出口とが前記筐体の外部に開口して設けられ前記電装品又は当該電装品に接触した部材を通過する空気が流通する流路とを備え、前記出口は、前記ベルマウスと隣接して当該ベルマウスが空気を吹き出す方向と同方向側に向いて配置されていることを特徴とする。 In order to solve the above problems, the present invention presents a housing, an outdoor heat exchanger provided in the housing for heat exchange between outside air and a refrigerant, an outdoor fan provided in the housing, and an outer periphery of the outdoor fan. A bell mouth that surrounds the bell mouth to form an air outlet by the outdoor fan, electrical components provided in a space between the side of the bell mouth and the inside of the housing, and an inlet and an outlet are the housing. It is provided with an opening to the outside of the bell mouth and has a flow path through which air passes through the electrical component or a member in contact with the electrical component, and the outlet is adjacent to the bell mouth and the bell mouth blows out air. It is characterized in that it is arranged facing the same direction as the direction.
　本発明によれば、室外ファンの負荷の増大を抑制することができる空気調和機用室外機及び空気調和機を提供することができる。
　上記した以外の課題、構成及び効果は、以下の実施形態の説明により明らかにされる。 According to the present invention, it is possible to provide an outdoor unit for an air conditioner and an air conditioner capable of suppressing an increase in the load of an outdoor fan.
Issues, configurations and effects other than those described above will be clarified by the description of the following embodiments.
本発明の実施例１に係る空気調和機の全体構成を示す系統図である。It is a system diagram which shows the whole structure of the air conditioner which concerns on Example 1 of this invention. 本発明の実施例１に係る室外機の縦断面図である。It is a vertical sectional view of the outdoor unit which concerns on Example 1 of this invention. 図２のＡ－Ａ断面図である。FIG. 2 is a cross-sectional view taken along the line AA of FIG. 本発明の実施例２に係る室外機の上部の縦断面図である。It is a vertical sectional view of the upper part of the outdoor unit which concerns on Example 2 of this invention. 本発明の実施例３に係る室外機の上部の縦断面図である。It is a vertical sectional view of the upper part of the outdoor unit which concerns on Example 3 of this invention. 本発明の実施例４に係る室外機の上部の縦断面図である。It is a vertical sectional view of the upper part of the outdoor unit which concerns on Example 4 of this invention. 本発明の実施例５に係る室外機の上面図である。It is a top view of the outdoor unit which concerns on Example 5 of this invention.
　以下、本発明の実施例について図面を用いて説明する。
　まず、本実施例の課題について説明する。前記の特許文献１の技術では、上吹出し型の室外機において、特許文献１の図１２に示すように、室外機本体の筐体とベルマウスとの間の空間から、室外機本体の筐体の下方にかけて電装品箱が設けられている。そして、送風ファンを駆動させると、送風ファンが発生させた上吹出しの風は、電装品箱の周囲も通過してベルマウスから排出され、この風によって電装品箱は冷却される。 Hereinafter, examples of the present invention will be described with reference to the drawings.
First, the problems of this embodiment will be described. In the technique of Patent Document 1, in the upper blow-out type outdoor unit, as shown in FIG. 12 of Patent Document 1, the housing of the outdoor unit main body is formed from the space between the housing of the outdoor unit main body and the bell mouth. An electrical equipment box is provided below. Then, when the blower fan is driven, the upper blown wind generated by the blower fan also passes around the electrical component box and is discharged from the bell mouth, and the electrical component box is cooled by this wind.
　特許文献１の技術では、熱交換器を介さずに直接外部から取り入れた空気も電装品箱の冷却に一部用いてはいるが、熱交換器を通過した熱交換後の空気も電装品箱の冷却に用いられている。このような熱交換後の空気は空気調和機が冷房運転中の場合は温度が高いため、電装品箱を十分に冷却することができない。また、電装品箱が送風ファンの上流側にも配置されているため、室外機本体の筐体内を流通する空気の圧力損失となり、また、騒音の増大にもつながる。そして、電装品箱を冷却した空気は送風ファンによって直接外部に排出されるので、送風ファンの負荷の増大となる。また、送風ファンから上方に吹き出される気流に対して、Ｃ部から第１取入口に取り入れられる気流は逆向きになる。このため、Ｃ部の矢印で示される空気の流れは弱められてしまう。 In the technique of Patent Document 1, air taken in directly from the outside without passing through a heat exchanger is also partially used for cooling the electrical component box, but the air after heat exchange that has passed through the heat exchanger is also used in the electrical component box. It is used for cooling. Since the temperature of the air after such heat exchange is high when the air conditioner is in the cooling operation, it is not possible to sufficiently cool the electrical component box. Further, since the electrical component box is also arranged on the upstream side of the blower fan, the pressure loss of the air circulating in the housing of the outdoor unit main body is caused, and the noise is increased. Then, the air that has cooled the electrical component box is directly discharged to the outside by the blower fan, which increases the load on the blower fan. Further, the airflow taken into the first intake from the C portion is in the opposite direction to the airflow blown upward from the blower fan. Therefore, the air flow indicated by the arrow in the C portion is weakened.
　一方、同じく上吹出し型の室外機である特許文献２の技術では、熱交換器を介さない外気だけで電装箱を冷却するので、比較的低温の外気で電装箱を十分に冷却することができる。また、電装箱は室外ファンの上流側（熱交換器の下流側）に存在するわけではないため、当該上流側の空気の圧力損失になることもなく、騒音が増大することもない。
　しかし、特許文献２の技術でも、特許文献２の図１に示すように、電装箱を冷却後の空気は室外ファンの駆動によって直接ベルマウス外に排出される。そのため、本技術でも、室外ファンの負荷は増大する。 On the other hand, in the technique of Patent Document 2, which is also an upper blow-out type outdoor unit, the electrical box is cooled only by the outside air that does not pass through the heat exchanger, so that the electrical box can be sufficiently cooled by the relatively low temperature outside air. .. Further, since the electrical box does not exist on the upstream side of the outdoor fan (downstream side of the heat exchanger), the pressure loss of the air on the upstream side does not occur, and the noise does not increase.
However, even in the technique of Patent Document 2, as shown in FIG. 1 of Patent Document 2, the air after cooling the electrical box is directly discharged to the outside of the bell mouth by the drive of the outdoor fan. Therefore, even with this technology, the load on the outdoor fan increases.
　このように、特許文献１，２の技術は、いずれも電装品箱、電装箱を冷却する空気の流れはファンが直接作り出しているので、当該ファンの負荷の増大についながるという不具合がある。
　以下では、かかる不具合を解消した本発明の実施例について説明する。 As described above, the techniques of Patent Documents 1 and 2 have a problem that the fan directly creates the flow of air for cooling the electrical component box and the electrical component box, which leads to an increase in the load of the fan. ..
Hereinafter, examples of the present invention in which such a defect is solved will be described.
　図１は、本実施例１に係る空気調和機１００の全体構成を示す系統図である。空気調和機１００は、圧縮機１３１、四方弁１３２、室内熱交換器１０１、膨張弁１０３、室外熱交換器１２等で構成され、各部材は配管１２１で接続されている。室内熱交換器１０１及び室内ファン１０２は室内機１０８に設けられている。圧縮機１３１、四方弁１３２、膨張弁１０３、室外熱交換器１２、室外ファン１３は本発明の実施例の空気調和機用室外機である室外機１に設けられている。なお、膨張弁１０３は、室内機１０８に設けてもよいし、室内機１０８及び室外機１の両方に設けてもよい。 FIG. 1 is a system diagram showing the overall configuration of the air conditioner 100 according to the first embodiment. The air conditioner 100 is composed of a compressor 131, a four-way valve 132, an indoor heat exchanger 101, an expansion valve 103, an outdoor heat exchanger 12, and the like, and each member is connected by a pipe 121. The indoor heat exchanger 101 and the indoor fan 102 are provided in the indoor unit 108. The compressor 131, the four-way valve 132, the expansion valve 103, the outdoor heat exchanger 12, and the outdoor fan 13 are provided in the outdoor unit 1 which is the outdoor unit for the air conditioner according to the embodiment of the present invention. The expansion valve 103 may be provided in the indoor unit 108, or may be provided in both the indoor unit 108 and the outdoor unit 1.
　圧縮機１３１は、圧縮機モータの駆動によって、低温低圧のガス冷媒を圧縮し、高温高圧のガス冷媒として吐出する装置である。
　四方弁１３２は、空気調和機１００の運転モードに応じて、冷媒の流路を切り替える弁である。
　膨張弁１０３は、「凝縮器」（空調運転の種類に応じて室外熱交換器１２及び室内熱交換器１０１のうちの一方）で凝縮した冷媒を減圧する弁である。なお、膨張弁１０３において減圧された冷媒は、「蒸発器」（空調運転の種類に応じて室外熱交換器１２及び室内熱交換器１０１のうちの他方）に導かれる。 The compressor 131 is a device that compresses a low-temperature low-pressure gas refrigerant by driving a compressor motor and discharges it as a high-temperature high-pressure gas refrigerant.
The four-way valve 132 is a valve that switches the flow path of the refrigerant according to the operation mode of the air conditioner 100.
The expansion valve 103 is a valve that reduces the pressure of the refrigerant condensed by the "condenser" (one of the outdoor heat exchanger 12 and the indoor heat exchanger 101 depending on the type of air conditioning operation). The refrigerant decompressed by the expansion valve 103 is guided to an "evaporator" (the other of the outdoor heat exchanger 12 and the indoor heat exchanger 101 depending on the type of air conditioning operation).
　室内熱交換器１０１は、その室外熱交換器１２を通流する冷媒と、室内ファン１０２から送り込まれる室内空気（空調対象空間の空気）との間で熱交換を行う熱交換器である。
　室内ファン１０２は、室内熱交換器１０１に室内空気を送り込むファンであり、室内熱交換器１０１の近傍に設置されている。
　室外熱交換器１２は、その伝熱管を通流する冷媒と、室外ファン１３から送り込まれる屋外空気との間で熱交換を行う熱交換器である。 The indoor heat exchanger 101 is a heat exchanger that exchanges heat between the refrigerant flowing through the outdoor heat exchanger 12 and the indoor air (air in the air conditioning target space) sent from the indoor fan 102.
The indoor fan 102 is a fan that sends indoor air to the indoor heat exchanger 101, and is installed in the vicinity of the indoor heat exchanger 101.
The outdoor heat exchanger 12 is a heat exchanger that exchanges heat between the refrigerant flowing through the heat transfer tube and the outdoor air sent from the outdoor fan 13.
　室外ファン１３は、室外熱交換器１２に屋外空気を送り込むファンである。
　図１を用いて、暖房運転時を例に、ヒートポンプ式の空気調和機１００の冷凍サイクルを説明する。空気調和機１００において、暖房運転時の冷媒の流れは実線矢印１４１で示している。圧縮機１３１は、ガス冷媒を圧縮する装置であり、圧縮機１３１で高温・高圧状態になったガス冷媒は、四方弁１３２を介して室内機１０８内の室内熱交換器１０１（凝縮器）に導かれる。そして、室内熱交換器１０１を流れる高温の冷媒が、室内ファン１０２から供給される室内空気に放熱することで、室内が暖められる。このとき、室外熱交換器１２内では、熱を奪われたガス冷媒が次第に液化し、室内熱交換器１０１の出口からは、飽和温度よりも数℃程度低温の過冷却状態の液冷媒が流出する。 The outdoor fan 13 is a fan that sends outdoor air to the outdoor heat exchanger 12.
The refrigeration cycle of the heat pump type air conditioner 100 will be described with reference to FIG. 1 by taking the heating operation as an example. In the air conditioner 100, the flow of the refrigerant during the heating operation is indicated by the solid arrow 141. The compressor 131 is a device that compresses the gas refrigerant, and the gas refrigerant that has been in a high temperature / high pressure state by the compressor 131 is sent to the indoor heat exchanger 101 (condenser) in the indoor unit 108 via the four-way valve 132. Be guided. Then, the high-temperature refrigerant flowing through the indoor heat exchanger 101 dissipates heat to the indoor air supplied from the indoor fan 102, thereby warming the room. At this time, the gas refrigerant that has been deprived of heat gradually liquefies in the outdoor heat exchanger 12, and the liquid refrigerant in the overcooled state, which is several ° C. lower than the saturation temperature, flows out from the outlet of the indoor heat exchanger 101. To do.
　その後、室内機１０８から流出した液冷媒は、膨張弁１０３を通過時の膨張作用により低温・低圧状態の気液二相冷媒となる。この低温・低圧の気液二相冷媒は、室外機１内の室外熱交換器１２（蒸発器）に導かれる。そして、室外熱交換器１２の伝熱管内を流れる低温の気液二相冷媒が、室外ファン１３から供給される外気から吸熱することで、冷媒の乾き度（＝ガス冷媒の質量速度／（液冷媒の質量速度＋ガス冷媒の質量速度））が高まる。室外熱交換器１２の出口では、冷媒はガス化して数℃程度、過熱度が上昇した状態で圧縮機１３１に戻る。以上で説明した、一連の冷凍サイクルによって、空気調和機１００の暖房運転が実現される。 After that, the liquid refrigerant flowing out of the indoor unit 108 becomes a gas-liquid two-phase refrigerant in a low temperature / low pressure state due to the expansion action when passing through the expansion valve 103. This low-temperature / low-pressure gas-liquid two-phase refrigerant is guided to the outdoor heat exchanger 12 (evaporator) in the outdoor unit 1. Then, the low-temperature gas-liquid two-phase refrigerant flowing in the heat transfer tube of the outdoor heat exchanger 12 absorbs heat from the outside air supplied from the outdoor fan 13, so that the dryness of the refrigerant (= mass velocity of gas refrigerant / (liquid)). (Mass rate of refrigerant + mass rate of gas refrigerant)) increases. At the outlet of the outdoor heat exchanger 12, the refrigerant is gasified and returns to the compressor 131 in a state where the degree of superheat has increased by about several ° C. The heating operation of the air conditioner 100 is realized by the series of refrigeration cycles described above.
　一方、冷房運転時の冷媒の流れは破線矢印１４２で示している。冷房運転時には、四方弁１３２を切り替えて、破線矢印１４２方向に冷媒が循環する冷凍サイクルを形成する。この場合、室内熱交換器１０１が蒸発器として作用し、室外熱交換器１２が凝縮器として作用する。この一連の冷凍サイクルによって、空気調和機１００の冷房運転が実現される。
　なお、空気調和機１００を冷房運転専用の装置として実現してもよいし、暖房運転専用の装置として実現してもよい。これらの場合は、四方弁１３２は不要になる。 On the other hand, the flow of the refrigerant during the cooling operation is indicated by the broken line arrow 142. During the cooling operation, the four-way valve 132 is switched to form a refrigeration cycle in which the refrigerant circulates in the direction of the dashed arrow 142. In this case, the indoor heat exchanger 101 acts as an evaporator, and the outdoor heat exchanger 12 acts as a condenser. The cooling operation of the air conditioner 100 is realized by this series of refrigeration cycles.
The air conditioner 100 may be realized as a device dedicated to cooling operation or as a device dedicated to heating operation. In these cases, the four-way valve 132 becomes unnecessary.
　図２は、本実施例１に係る室外機１の縦断面図であり、図３は、図２のＡ－Ａ断面図である。なお、図２は、後述する電気箱収納空間３３の配置部材を電気箱収納空間３３内の当該配置部材等の構造が解りやすいように便宜上ずらして図示している。本実施例１では、電気箱３４ａ，３４ｂの配置位置としては、図３の図示が正しい。なお、配置位置としては、目的等に応じて適宜決定される。さらに、図２、図３について、寸法等は、適宜、誇張や矮小化して記載している。
　室外機１は、上吹出し型の室外機であって、筐体１１、室外熱交換器１２、室外ファン１３、ベルマウス１４、電気箱３４ａ，３４ｂ等を備えている。筐体１１はベース１９の上に配置された直方体状のケースである。 FIG. 2 is a vertical sectional view of the outdoor unit 1 according to the first embodiment, and FIG. 3 is a sectional view taken along the line AA of FIG. Note that FIG. 2 shows the arrangement members of the electric box storage space 33, which will be described later, shifted for convenience so that the structure of the arrangement members and the like in the electric box storage space 33 can be easily understood. In the first embodiment, the illustration of FIG. 3 is correct as the arrangement position of the electric boxes 34a and 34b. The placement position is appropriately determined according to the purpose and the like. Further, with respect to FIGS. 2 and 3, the dimensions and the like are described in an exaggerated or dwarfed manner as appropriate.
The outdoor unit 1 is an upper blow-out type outdoor unit, and includes a housing 11, an outdoor heat exchanger 12, an outdoor fan 13, a bell mouth 14, electric boxes 34a, 34b, and the like. The housing 11 is a rectangular parallelepiped case arranged on the base 19.
　筐体１１の内側の側面には室外熱交換器１２が設けられている。室外熱交換器１２は、外気と冷媒とを熱交換する装置である。
　ベース１９上の筐体１１内には圧縮機１３１、アキュムレータ１７（図１においては図示を省略）が設置されている。
　筐体１１の上部にはシュラウド２１が設置されている。室外ファン１３は筐体１１の上部にシュラウド２１を介して空気の吹き出し方向が上向きになるように設けられている。そして、室外ファン１３は、シュラウド２１に固定されたモータクランプ２２に設置されたモータ２３によって駆動する。 An outdoor heat exchanger 12 is provided on the inner side surface of the housing 11. The outdoor heat exchanger 12 is a device that exchanges heat between the outside air and the refrigerant.
A compressor 131 and an accumulator 17 (not shown in FIG. 1) are installed in the housing 11 on the base 19.
A shroud 21 is installed on the upper part of the housing 11. The outdoor fan 13 is provided on the upper part of the housing 11 so that the air blowing direction is upward through the shroud 21. Then, the outdoor fan 13 is driven by a motor 23 installed in a motor clamp 22 fixed to the shroud 21.
　ベルマウス１４は室外ファン１３の外周を囲うように設けられた上面視で円筒形状の部材であり、筐体１１の上部に設けられている。ベルマウス１４は、室外ファン１３による空気の吹出し口として機能する。
　ベルマウス１４は室外ファン１３の高効率化のために、室外ファン１３の回転軸方向に寸法の長いダクト型である。ベルマウス１４は、安全上及びデザイン上の理由で、板金により形成され筐体１１の一部をなす上面視で矩形状の側面カバー３１で囲われ、また、支持されている。また、側面カバー３１の上部は、上カバー３２で一部塞がれている。 The bell mouth 14 is a member having a cylindrical shape in a top view and is provided so as to surround the outer periphery of the outdoor fan 13, and is provided on the upper portion of the housing 11. The bell mouth 14 functions as an air outlet by the outdoor fan 13.
The bell mouth 14 is a duct type having a long dimension in the rotation axis direction of the outdoor fan 13 in order to improve the efficiency of the outdoor fan 13. For safety and design reasons, the bell mouth 14 is surrounded and supported by a rectangular side cover 31 which is formed of sheet metal and forms a part of the housing 11 in a top view. Further, the upper portion of the side cover 31 is partially closed by the upper cover 32.
　側面カバー３１、上カバー３２及びベルマウス１４で覆われた空間の一部は電気箱収納空間３３をなす。本例では、電気箱収納空間３３が側面カバー３１の角部の２箇所に設けられている（図３）。
　各電気箱収納空間３３には、それぞれ電気箱３４ａ，３４ｂが収納されている。電気箱３４ａ，３４ｂには、それぞれ高発熱部品である電装品であるインバータ基板が収納されている。このインバータ基板は基本的に２種類あり、それは、圧縮機１３１の駆動用のインバータ基板３５ａ（第１基板）と、室外ファン１３の駆動用のインバータ基板３５ｂ（第２基板）とである。電気箱３４ａにはインバータ基板３５ａが収納され、電気箱３４ｂにはインバータ基板３５ｂが収納されている。電気箱３４ａ，３４ｂの外側には、インバータ基板３５ａ，３５ｂにそれぞれ接触した部材であり、インバータ基板３５ａ，３５ｂを冷却するヒートシンク３６ａ，３６ｂがそれぞれ接続されている。 A part of the space covered by the side cover 31, the upper cover 32 and the bell mouth 14 forms the electric box storage space 33. In this example, the electric box storage spaces 33 are provided at two corners of the side cover 31 (FIG. 3).
Electric boxes 34a and 34b are stored in each electric box storage space 33, respectively. In the electric boxes 34a and 34b, inverter boards, which are electrical components that generate high heat, are housed. There are basically two types of the inverter board, which are the inverter board 35a (first board) for driving the compressor 131 and the inverter board 35b (second board) for driving the outdoor fan 13. The inverter board 35a is housed in the electric box 34a, and the inverter board 35b is housed in the electric box 34b. Heat sinks 36a and 36b, which are members in contact with the inverter boards 35a and 35b and cool the inverter boards 35a and 35b, are connected to the outside of the electric boxes 34a and 34b, respectively.
　このように、室外機１においては、電気箱３４ａ，３４ｂは、図７におけるデッドスペースであったベルマウス１４と側面カバー３１（筐体１１）との間の空間を電気箱収納空間３３とし収納場所として有効利用する。そして、インバータ基板３５ａとヒートシンク３６ａとを備えた電気箱３４ａと、インバータ基板３５ｂとヒートシンク３６ｂとを備えた電気箱３４ｂに分けて、ベルマウス４の側方に配置する。 As described above, in the outdoor unit 1, the electric boxes 34a and 34b store the space between the bell mouth 14 and the side cover 31 (housing 11), which was the dead space in FIG. 7, as the electric box storage space 33. Effectively use it as a place. Then, the electric box 34a provided with the inverter board 35a and the heat sink 36a and the electric box 34b provided with the inverter board 35b and the heat sink 36b are divided and arranged on the side of the bell mouse 4.
　図２に示すように、電気箱３４ａ，３４ｂのそれぞれの下方には、筐体１１の一部ともなる側面カバー３１に外気と電気箱収納空間３３とを連通する開口となる入口４１を設けている。また、電気箱３４ａ，３４ｂのそれぞれの上方には、ベルマウス１４の端部１４ａと筐体１１の一部である上カバー３２との間に、外気と電気箱収納空間３３とを連通する開口となる出口４２を設けている。これによって、矢印ａに示すような入口４１と出口４２とを結び、電気箱収納空間３３を通過する空気の流路がそれぞれ形成される（図２）。この各流路の途中には、それぞれヒートシンク３６ａ，３６ｂが位置している。各出口４２は、ベルマウス１４の外面と隣接して当該ベルマウス１４が空気を吹き出す方向と同方向側（図１の上側）に向いて出口４２から排出される空気が流れるように配置されている。 As shown in FIG. 2, below each of the electric boxes 34a and 34b, an inlet 41 serving as an opening for communicating the outside air and the electric box storage space 33 is provided on the side cover 31 which is also a part of the housing 11. There is. Further, above each of the electric boxes 34a and 34b, there is an opening for communicating the outside air and the electric box storage space 33 between the end portion 14a of the bell mouth 14 and the upper cover 32 which is a part of the housing 11. The outlet 42 is provided. As a result, the inlet 41 and the outlet 42 as shown by the arrow a are connected, and air flow paths passing through the electric box storage space 33 are formed (FIG. 2). Heat sinks 36a and 36b are located in the middle of each of the flow paths, respectively. Each outlet 42 is arranged adjacent to the outer surface of the bell mouth 14 so that the air discharged from the outlet 42 flows toward the same direction (upper side in FIG. 1) as the direction in which the bell mouth 14 blows air. There is.
　図２に示すように、側面カバー３１及び筐体１１を上面視した形状は略正方形である。そして、室外ファン１３の回転軸中心１３ａは図３において図面上の上側に偏っている。すなわち、図３で上側の辺にあたる側面カバー３１の板金３１ａから下側の辺にあたる側面カバー３１の板金３１ｂまでの距離をＷｕとする。また、板金３１ａから回転軸中心１３ａまでの距離をＷｆとする。この場合に、“Ｗｆ＜Ｗｕ／２”となる。
　本実施例１の作用効果について説明する。 As shown in FIG. 2, the shape of the side cover 31 and the housing 11 as viewed from above is substantially square. The center 13a of the rotation axis of the outdoor fan 13 is biased upward in the drawing in FIG. That is, in FIG. 3, the distance from the sheet metal 31a of the side cover 31 corresponding to the upper side to the sheet metal 31b of the side cover 31 corresponding to the lower side is Wu. Further, the distance from the sheet metal 31a to the center of the rotation axis 13a is Wf. In this case, "Wf <Wu / 2".
The action and effect of the first embodiment will be described.
　室外ファン１３を駆動することによって、外気が室外熱交換器１２を通過して筐体１１に流入する。この際に外気と冷媒とが熱交換する。筐体１１に流入した外気はベルマウス１４を介して室外機１の上方に吹き出して排出される。この場合の外気の流れを図２に矢印ｂで示している。
　そして、ベルマウス１４から室外機１の上方に吹き出して外気が排出される際に、矢印ｂのように流れる外気の粘性の作用によって、ベルマウス１４に隣接する出口４２の周囲の空気も矢印ａのように流れ、矢印ｂの外気の流れに巻き込まれる。このような現象をエゼクタ効果という。このエゼクタ効果あるいは、噴流が外部の流体を引き込むことによって起こるコアンダ効果によって入口４１から外気が吸気され、出口４２から排出される、矢印ａのような空気の流れが発生する。 By driving the outdoor fan 13, the outside air passes through the outdoor heat exchanger 12 and flows into the housing 11. At this time, the outside air and the refrigerant exchange heat. The outside air that has flowed into the housing 11 is blown out above the outdoor unit 1 via the bell mouth 14 and discharged. The flow of outside air in this case is shown by arrow b in FIG.
Then, when the outside air is discharged from the bell mouth 14 above the outdoor unit 1, the air around the outlet 42 adjacent to the bell mouth 14 is also indicated by the arrow a due to the viscous action of the outside air flowing as shown by the arrow b. It flows like this and is caught in the flow of outside air indicated by arrow b. Such a phenomenon is called the ejector effect. Due to this ejector effect or the Coanda effect caused by the jet flowing in the external fluid, the outside air is taken in from the inlet 41 and discharged from the outlet 42, and the air flow as shown by the arrow a is generated.
　矢印ａの空気の流れはヒートシンク３６ａ，３６ｂの周囲を通過して、ヒートシンク３６ａ，３６ｂ、ひいてはインバータ基板３５ａ，３５ｂを冷却する。そして、出口４２から排出される。
　このような構成とすることにより、インバータ基板３５ａ，３５ｂの冷却に必要な空気、すなわち、矢印ａの空気の流れは室外ファン１３を通過しない。室外ファン１３を通過する矢印ｂの空気の流れは全て室外熱交換器１２における熱交換が行われたものだけである。そのため、室外ファン１３の駆動でベルマウス１４から排出される風量を低減でき、その分だけ室外ファン１３の動力を低減できて、室外機１の負荷の低減、省エネルギーに貢献することができる。さらに、ベルマウス１４からの風量が低減したことによって、室外ファン１３から発生する騒音も低減でき、室外機１の静音化にも貢献できる。 The air flow of the arrow a passes around the heat sinks 36a and 36b to cool the heat sinks 36a and 36b, and thus the inverter boards 35a and 35b. Then, it is discharged from the outlet 42.
With such a configuration, the air required for cooling the inverter boards 35a and 35b, that is, the air flow of the arrow a does not pass through the outdoor fan 13. The air flow of the arrow b passing through the outdoor fan 13 is only the one in which the heat exchange is performed in the outdoor heat exchanger 12. Therefore, the air volume discharged from the bell mouth 14 can be reduced by driving the outdoor fan 13, the power of the outdoor fan 13 can be reduced by that amount, and the load of the outdoor unit 1 can be reduced and energy saving can be contributed. Further, since the air volume from the bell mouth 14 is reduced, the noise generated from the outdoor fan 13 can be reduced, which can contribute to the noise reduction of the outdoor unit 1.
　さらに、矢印ａの空気は比較的低温の外気を吸気しているため、インバータ基板３５ａ，３５ｂの冷却性が向上して、室外機１の信頼性向上に貢献できる。例えば、外気温の高い夏場の場合、室外熱交換器１２は凝縮器として作用するので室外熱交換器１２を通過した矢印ｂの空気は外気よりもさらに温度が高くなる。一方、室外熱交換器１２を通過しない矢印ａの空気はこのようなことがない。
　また、この冷却性の向上によって、ヒートシンク３６ａ，３６ｂを小型化することができ、室外機１の低製造コスト化に貢献できる。
　さらに、矢印ｂに示す空気の流れの上流側に電気箱３４ａ，３４ｂを配置しないことで、圧力損失が低減して室外ファン１３によって送風される風量が増加し、室外熱交換器１２の熱交換性能の増加に貢献できる。 Further, since the air indicated by the arrow a takes in the outside air having a relatively low temperature, the cooling performance of the inverter boards 35a and 35b is improved, which can contribute to the improvement of the reliability of the outdoor unit 1. For example, in the summer when the outside air temperature is high, the outdoor heat exchanger 12 acts as a condenser, so that the air of the arrow b passing through the outdoor heat exchanger 12 has a higher temperature than the outside air. On the other hand, the air of arrow a that does not pass through the outdoor heat exchanger 12 does not have such a situation.
Further, by improving the cooling property, the heat sinks 36a and 36b can be miniaturized, which can contribute to the reduction of the manufacturing cost of the outdoor unit 1.
Further, by not arranging the electric boxes 34a and 34b on the upstream side of the air flow shown by the arrow b, the pressure loss is reduced, the air volume blown by the outdoor fan 13 is increased, and the heat exchange of the outdoor heat exchanger 12 is performed. It can contribute to the increase in performance.
　また、インバータ基板３５ａと３５ｂとを別個の電気箱収納空間３３に収納することで、インバータ基板３５ａ，３５ｂを収納するスペースを大きくとることができる。
　さらに、室外ファン１３の回転軸中心１３ａは図３において上側に偏っている。これによって、インバータ基板３５ａと３５ｂとを収納する電気箱収納空間３３を広くできて、インバータ基板３５ａ，３５ｂを収納するスペースを大きくとることができる。このように、インバータ基板３５ａ，３５ｂを収納するスペースを大きくとることで、電気箱３４ａ、３４ｂの体積を大きくすることができ、インバータ基板３５ａ、３５ｂやヒートシンク３６ａ、３６ｂの収納と配置の自由度を増すことができる。 Further, by storing the inverter boards 35a and 35b in separate electric box storage spaces 33, a large space for storing the inverter boards 35a and 35b can be taken.
Further, the rotation axis center 13a of the outdoor fan 13 is biased upward in FIG. As a result, the electric box storage space 33 for accommodating the inverter boards 35a and 35b can be widened, and a large space for accommodating the inverter boards 35a and 35b can be taken. By increasing the space for accommodating the inverter boards 35a and 35b in this way, the volume of the electric boxes 34a and 34b can be increased, and the degree of freedom in accommodating and arranging the inverter boards 35a and 35b and the heat sinks 36a and 36b. Can be increased.
　なお、本実施例１は、上吹出し型の室外機１について説明したが、室外機は上吹出し型に限定されるものではなく、横吹出し型等としてもよい。 Although the present embodiment 1 has described the upper blow-out type outdoor unit 1, the outdoor unit is not limited to the upper blow-out type and may be a horizontal blow-out type or the like.
　図４は、本発明の実施例２に係る室外機１Ａの上部の縦断面図である。室外機１Ａが実施例１の室外機１と共通する部材については実施例１と同様の符号を用い、詳細な図示と説明は省略する。
　本実施例２の室外機１Ａが実施例１の室外機１と異なるのは、ヒートシンク３６ａ，３６ｂを矢印ａで示す空気の流路の出口４２近傍に近づけてそれぞれ設置していることである。
　本実施例２によれば、矢印ａで示す空気の流路は矢印ｂの空気の流れの影響によって出口４２の近傍で流速が速い。そのため、ヒートシンク３６ａ，３６ｂを出口４２近傍に設置することで、ヒートシンク３６ａ，３６ｂ、ひいてはインバータ基板３５ａ，３５ｂの冷却効果を高めることができる。 FIG. 4 is a vertical cross-sectional view of the upper part of the outdoor unit 1A according to the second embodiment of the present invention. For the members in which the outdoor unit 1A is common to the outdoor unit 1 of the first embodiment, the same reference numerals as those of the first embodiment are used, and detailed illustration and description thereof will be omitted.
The outdoor unit 1A of the second embodiment is different from the outdoor unit 1 of the first embodiment in that the heat sinks 36a and 36b are installed close to the outlet 42 of the air flow path indicated by the arrow a.
According to the second embodiment, the flow velocity of the air flow path indicated by the arrow a is high in the vicinity of the outlet 42 due to the influence of the air flow of the arrow b. Therefore, by installing the heat sinks 36a and 36b in the vicinity of the outlet 42, the cooling effect of the heat sinks 36a and 36b and eventually the inverter boards 35a and 35b can be enhanced.
　図５は、本発明の実施例３に係る室外機１Ｂの上部の縦断面図である。室外機１Ｂが実施例１の室外機１と共通する部材については実施例１と同様の符号を用い、詳細な図示と説明は省略する。なお、図の寸法等については、誇張や矮小化を行っている。この点は以下の実施例に関する他の図においても同様である。
　本実施例３の室外機１Ｂが実施例１の室外機１と異なるのは、ヒートシンク３６ａ，３６ｂを矢印ａで示す空気の流路の入口４１近傍にそれぞれ設置していることである。
　本実施例３によれば、入口４１から吸気される外気の温度は矢印ａで示す流路の入口４１よりも下流側に比べて低い。そのため、ヒートシンク３６ａ，３６ｂを入口４１近傍に設置することで、ヒートシンク３６ａ，３６ｂ、ひいてはインバータ基板３５ａ，３５ｂの冷却効果を高めることができる。 FIG. 5 is a vertical cross-sectional view of the upper part of the outdoor unit 1B according to the third embodiment of the present invention. For the members in which the outdoor unit 1B is common to the outdoor unit 1 of the first embodiment, the same reference numerals as those of the first embodiment are used, and detailed illustration and description thereof will be omitted. The dimensions of the figure are exaggerated and dwarfed. This point is the same in the other figures relating to the following examples.
The outdoor unit 1B of the third embodiment is different from the outdoor unit 1 of the first embodiment in that the heat sinks 36a and 36b are installed near the inlet 41 of the air flow path indicated by the arrow a, respectively.
According to the third embodiment, the temperature of the outside air taken in from the inlet 41 is lower than that of the inlet 41 of the flow path indicated by the arrow a. Therefore, by installing the heat sinks 36a and 36b in the vicinity of the inlet 41, the cooling effect of the heat sinks 36a and 36b and eventually the inverter boards 35a and 35b can be enhanced.
　図６は、本発明の実施例４に係る室外機１Ｃの上部の縦断面図である。室外機１Ｃが実施例１の室外機１と共通する部材については実施例１と同様の符号を用い、詳細な図示と説明は省略する。
　本実施例４の室外機１Ｃが実施例１の室外機１と異なるのは、まず、ヒートシンク３６ａ，３６ｂが設けられていないことである。また、電気箱３４ａ，３４ｂの筐体における入口４１近傍には当該筐体内と入口４１を連通する入口３４ａ１，３４ｂ１がそれぞれ設けられている。また、電気箱３４ａ，３４ｂの筐体における出口４２近傍には当該筐体内と出口４２を連通する出口３４ａ２，３４ｂ２がそれぞれ設けられている。さらに、電気箱３４ａ，３４ｂとベルマウス１４との間には閉止板５１がそれぞれ設けられている。閉止板５１は実施例１における矢印ａの流路を閉鎖する部材である。これにより、エグゼクタ効果やコアンダ効果によって、入口４１，４１から入口３４ａ１，３４ｂ１に入って、出口３４ａ２，３４ｂ２を抜け、出口４２，４２から排出される外気の流路が矢印ｃに示すように形成される。この矢印ｃの示す流路中には電気箱３４ａ，３４ｂ内のインバータ基板３５ａ，３５ｂが配置されている。 FIG. 6 is a vertical cross-sectional view of the upper part of the outdoor unit 1C according to the fourth embodiment of the present invention. The same reference numerals as those in the first embodiment are used for the members in which the outdoor unit 1C is common to the outdoor unit 1 of the first embodiment, and detailed illustration and description thereof will be omitted.
The outdoor unit 1C of the fourth embodiment is different from the outdoor unit 1 of the first embodiment in that the heat sinks 36a and 36b are not provided. Further, in the vicinity of the inlet 41 in the housings of the electric boxes 34a and 34b, inlets 34a1 and 34b1 communicating with the inside of the housing and the inlet 41 are provided, respectively. Further, in the vicinity of the outlet 42 in the housings of the electric boxes 34a and 34b, outlets 34a2 and 34b2 that communicate the inside of the housing and the outlet 42 are provided, respectively. Further, a closing plate 51 is provided between the electric boxes 34a and 34b and the bell mouth 14, respectively. The closing plate 51 is a member that closes the flow path of the arrow a in the first embodiment. As a result, due to the executor effect and the Coanda effect, the flow path of the outside air entering the inlets 34a1, 34b1 from the inlets 41 and 41, passing through the outlets 34a2 and 34b2, and being discharged from the outlets 42 and 42 is formed as shown by the arrow c. Will be done. Inverter boards 35a and 35b in the electric boxes 34a and 34b are arranged in the flow path indicated by the arrow c.
　本実施例４によれば、矢印ｃの外気の流れによってインバータ基板３５ａ，３５ｂを直接冷却することができる。そのため、本実施例４によれば、ヒートシンク３６ａ，３６ｂを不要として室外機１Ｃの製造コストを低減することができる。 According to the fourth embodiment, the inverter boards 35a and 35b can be directly cooled by the flow of the outside air indicated by the arrow c. Therefore, according to the fourth embodiment, the manufacturing cost of the outdoor unit 1C can be reduced by eliminating the need for the heat sinks 36a and 36b.
　図７は、本発明の実施例４に係る室外機１Ｄの上面図である。室外機１Ｄが実施例１の室外機１と共通する部材については実施例１と同様の符号を用い、詳細な図示と説明は省略する。
　本実施例５が実施例１と異なる点は、以下の諸点である。室外機１Ｄの側面カバー３１、筐体１１の上面視した形状は長方形状であり、その長手方向に並んで２台の室外ファン１３及びベルマウス１４が筐体１１内に収納されている。各電気箱収納空間３３は、側面カバー３１を上面視した長方形状における２つの長辺の各中間位置における側面カバー３１の内側にそれぞれ設けられている。図７においては、上カバー３２を除去して、電気箱３４ａ，３４ｂ、インバータ基板３５ａ，３５ｂを図示している、ヒートシンク３６ａ，３６ｂも図示している。しかし、入口４１、出口４２は、便宜上図示を省略するが、実施例１と同様に設けられている。 FIG. 7 is a top view of the outdoor unit 1D according to the fourth embodiment of the present invention. The same reference numerals as those in the first embodiment are used for the members in which the outdoor unit 1D is common to the outdoor unit 1 of the first embodiment, and detailed illustration and description thereof will be omitted.
The difference between Example 5 and Example 1 is the following points. The side cover 31 of the outdoor unit 1D and the housing 11 have a rectangular shape when viewed from above, and two outdoor fans 13 and a bell mouth 14 are housed in the housing 11 side by side in the longitudinal direction thereof. Each electric box storage space 33 is provided inside the side cover 31 at each intermediate position between the two long sides in a rectangular shape with the side cover 31 viewed from above. In FIG. 7, the heat sinks 36a and 36b, which show the electric boxes 34a and 34b and the inverter boards 35a and 35b with the upper cover 32 removed, are also shown. However, the inlet 41 and the outlet 42 are provided in the same manner as in the first embodiment, although not shown for convenience.
　各室外ファン１３の回転軸１３ａの位置は、何れも前記の長方形状の中央部よりも当該長方形状の両端部に近い位置に配置されている。すなわち、前記長方形状の長手方向の長さをＬｕ、各室外ファン１３の回転軸１３ａから前記長方形状の直近の長手方向端部までの長さをＬｆとすると、“Ｌｆ＜Ｌｕ／４”という関係が成り立つ。
　本実施例５によれば、各室外ファン１３の回転軸１３ａの位置を前記のようにしたので、電気箱３４ａ，３４ｂの体積を大きくすることができ、インバータ基板３５ａ，３５ｂやヒートシンク３６ａ，３６ｂの収納と配置の自由度を増大することができる。 The positions of the rotation shafts 13a of each outdoor fan 13 are arranged closer to both ends of the rectangular shape than the central portion of the rectangular shape. That is, assuming that the length of the rectangle in the longitudinal direction is Lu and the length from the rotation shaft 13a of each outdoor fan 13 to the nearest end of the rectangle in the longitudinal direction is Lf, it is called "Lf <Lu / 4". The relationship holds.
According to the fifth embodiment, since the positions of the rotating shafts 13a of each outdoor fan 13 are set as described above, the volumes of the electric boxes 34a and 34b can be increased, and the inverter boards 35a and 35b and the heat sinks 36a and 36b can be increased. The degree of freedom of storage and placement of the inverter can be increased.
　なお、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることも可能である。 The present invention is not limited to the above-mentioned examples, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to those having all the described configurations. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. It is also possible to add / delete / replace a part of the configuration of each embodiment with another configuration.
　１　　　室外機（空気調和機用室外機）
　１１　　筐体
　１２　　室外熱交換器
　１３　　室外ファン
　１３ａ　回転軸
　１４　　ベルマウス
　３１　　側面カバー（筐体）
　３５ａ　インバータ基板（電装品、第１基板）
　３５ｂ　インバータ基板（電装品、第２基板）
　３６ａ，３６ｂ　ヒートシンク（電装品に接触した部材）
　４１　　入口
　４２　　出口
　１００　空気調和機
　１０１　室内熱交換器
　１０２　室内ファン
　１０３　膨張弁
　１３１　圧縮機
　ａ　　　流路 1 Outdoor unit (outdoor unit for air conditioner)
11 Housing 12 Outdoor heat exchanger 13 Outdoor fan 13a Rotating shaft 14 Bellmouth 31 Side cover (housing)
35a Inverter board (electrical components, first board)
35b Inverter board (electrical components, second board)
36a, 36b heat sink (member in contact with electrical components)
41 Inlet 42 Outlet 100 Air conditioner 101 Indoor heat exchanger 102 Indoor fan 103 Expansion valve 131 Compressor a Flow path

Claims (7)

  1. 　筐体と、
    　前記筐体に設けられ外気と冷媒とを熱交換する室外熱交換器と、
    　前記筐体に設けられる室外ファンと、
    　前記室外ファンの外周を囲い前記室外ファンによる空気の吹出し口を形成するベルマウスと、
    　前記ベルマウスの側方と前記筐体の内側との間の空間に設けられた電装品と、
    　入口と出口とが前記筐体の外部に開口して設けられ前記電装品又は当該電装品に接触した部材を通過する空気が流通する流路とを備え、
    　前記出口は、前記ベルマウスと隣接して当該ベルマウスが空気を吹き出す方向と同方向側に向いて配置されていることを特徴とする空気調和機用室外機。     With the housing
    An outdoor heat exchanger provided in the housing for heat exchange between the outside air and the refrigerant,
    An outdoor fan provided in the housing and
    A bell mouth that surrounds the outer circumference of the outdoor fan and forms an air outlet by the outdoor fan.
    Electrical components provided in the space between the side of the bell mouth and the inside of the housing,
    An inlet and an outlet are provided so as to open to the outside of the housing, and include a flow path through which air passes through the electrical component or a member in contact with the electrical component.
    An outdoor unit for an air conditioner, wherein the outlet is arranged adjacent to the bell mouth and faces the same direction as the direction in which the bell mouth blows air.
  2. 　前記電装品として、第１基板と第２基板との２枚の基板を備えていて、
    　前記第１基板と前記第２基板は、双方とも前記ベルマウスと前記筐体との間の領域に設けられていることを特徴とする請求項１に記載の空気調和機用室外機。     As the electrical component, two boards, a first board and a second board, are provided.
    The outdoor unit for an air conditioner according to claim 1, wherein both the first substrate and the second substrate are provided in a region between the bell mouth and the housing.
  3. 　前記室外ファンは上吹き出しであり、
    　前記筐体は上面視で長方形状であり、その長手方向に並んで２台の前記室外ファンが収納配置されていて、
    　前記各室外ファンの回転軸の位置は、何れも前記長方形状の中央部よりも両端部に近い位置に配置されていることを特徴とする請求項１又は請求項２の何れかの一項に記載の空気調和機用室外機。     The outdoor fan is an upper blowout,
    The housing has a rectangular shape when viewed from above, and two outdoor fans are housed and arranged side by side in the longitudinal direction thereof.
    The position of the rotation shaft of each outdoor fan is one of claims 1 or 2, characterized in that the positions of the rotation shafts of the outdoor fans are closer to both ends than the central portion of the rectangular shape. The listed outdoor unit for air conditioners.
  4. 　前記電装品に接触した部材としてヒートシンクを備え、
    　前記ヒートシンクは、前記流路の前記出口の近傍に配置されていることを特徴とする請求項１乃至請求項３の何れかの一項に記載の空気調和機用室外機。     A heat sink is provided as a member in contact with the electrical components.
    The outdoor unit for an air conditioner according to any one of claims 1 to 3, wherein the heat sink is arranged in the vicinity of the outlet of the flow path.
  5. 　前記電装品に接触した部材としてヒートシンクを備え、
    　前記ヒートシンクは、前記流路の前記入口の近傍に配置されていることを特徴とする請求項１乃至請求項３の何れかの一項に記載の空気調和機用室外機。     A heat sink is provided as a member in contact with the electrical components.
    The outdoor unit for an air conditioner according to any one of claims 1 to 3, wherein the heat sink is arranged in the vicinity of the inlet of the flow path.
  6. 　前記電装品は、前記流路に配置されていることを特徴とする請求項１乃至請求項３の何れかの一項に記載の空気調和機用室外機。 The outdoor unit for an air conditioner according to any one of claims 1 to 3, wherein the electrical component is arranged in the flow path.
  7. 　請求項１乃至請求項６の何れかの一項に記載の空気調和機用室外機と、
    　前記冷媒を圧縮する圧縮機と、
    　前記冷媒を減圧する膨張弁と、
    　前記冷媒と室内空気との熱交換を行う室内熱交換器と、
    　前記室内空気を前記室内熱交換器に送風する室内ファンとを備えていることを特徴とする空気調和機。     The outdoor unit for an air conditioner according to any one of claims 1 to 6.
    A compressor that compresses the refrigerant and
    An expansion valve that reduces the pressure of the refrigerant and
    An indoor heat exchanger that exchanges heat between the refrigerant and indoor air,
    An air conditioner including an indoor fan that blows the indoor air to the indoor heat exchanger.
PCT/JP2019/015263 2019-04-08 2019-04-08 Outdoor unit for air conditioner, and air conditioner WO2020208669A1 (en)

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