US20180274800A1 - Outdoor unit - Google Patents

Outdoor unit Download PDF

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Publication number
US20180274800A1
US20180274800A1 US15/764,111 US201515764111A US2018274800A1 US 20180274800 A1 US20180274800 A1 US 20180274800A1 US 201515764111 A US201515764111 A US 201515764111A US 2018274800 A1 US2018274800 A1 US 2018274800A1
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US
United States
Prior art keywords
fan
body casing
unit
outdoor unit
intake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US15/764,111
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English (en)
Inventor
Yutaka Aoyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Assigned to MITSUBISHI ELECTRIC CORPORATION reassignment MITSUBISHI ELECTRIC CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AOYAMA, YUTAKA
Publication of US20180274800A1 publication Critical patent/US20180274800A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
    • F24F1/50—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow with outlet air in upward direction

Definitions

  • the present invention relates to an outdoor unit configured to suck air from a lateral side and blow out the sucked air upward.
  • Patent Literature 1 Conventionally, outdoor units that suck air from a lateral side and blow out the sucked air upward are known (see, for example, Patent Literature 1).
  • Patent Literature 1 Japanese Patent No. 5398283
  • the present invention has been made in view of the above problem and has an object to provide a downsized outdoor unit.
  • An outdoor unit comprises: a body casing including an intake portion that is formed in a lateral side of the body casing and through which air is sucked, a blowout portion formed in a top of the body casing, the blowout portion being configured to blow out the air sucked through the intake portion, and an air path formed between the intake portion and the blowout portion; a heat exchanger disposed in the air path; a fan unit disposed in the air path above the heat exchanger; and a mounting member mounting the fan unit on the body casing, wherein the mounting member includes a fixture portion fixed to the body casing and a fan-unit holding portion holding the fan unit, and the fan-unit holding portion retreats downward from the fixture portion.
  • the present invention provides a downsized outdoor unit.
  • FIG. 1 is a diagram showing an example of a configuration of an outdoor unit according to Embodiment 1 of the present invention.
  • FIG. 2 is a diagram showing an example of a configuration of an indoor unit connected to the outdoor unit shown in FIG. 1 .
  • FIG. 3 is a diagram of a front face and left side face of the outdoor unit according to Embodiment 1 of the present invention as viewed obliquely.
  • FIG. 4 is a diagram of a rear face and right side face of the outdoor unit shown in FIG. 3 as viewed obliquely.
  • FIG. 5 is a diagram schematically showing a cross section of a heat exchange chamber of the outdoor unit shown in FIGS. 3 and 4 .
  • FIG. 6 is a diagram schematically showing a cross section of that part of the outdoor unit shown in FIGS. 3 and 4 in which a fan unit is housed.
  • FIG. 7 is a diagram describing how a mounting member shown in FIG. 6 is attached to a body casing.
  • FIG. 8 is an enlarged view of a fan motor and the mounting member shown in FIG. 7 .
  • FIG. 9 is a diagram describing a relationship between radial position of a fan and intake rate of the fan.
  • FIG. 10 is a diagram of Comparative Example 1, which is a comparative example to FIG. 5 .
  • FIG. 11 is a diagram of Comparative Example 2, which is a comparative example to FIG. 6 .
  • FIG. 12 is a diagram comparing the outdoor unit of Embodiment 1, Comparative Example 1, and Comparative Example 2 with one another in terms of intake/exhaust losses of the outdoor unit.
  • FIG. 1 is a diagram showing an example of a configuration of an outdoor unit according to Embodiment 1 of the present invention
  • FIG. 2 is a diagram showing an example of a configuration of an indoor unit connected to the outdoor unit shown in FIG. 1 .
  • the outdoor unit 1 shown in FIG. 1 and the indoor unit 200 shown in FIG. 2 are connected with each other via refrigerant pipes, thereby making up a non-illustrated refrigeration cycle apparatus.
  • the non-illustrated refrigeration cycle apparatus is applied, for example, to air-conditioning devices configured to air-condition buildings, commercial facilities, or the like.
  • the outdoor unit 1 and indoor unit 200 are interconnected via the refrigerant pipes at least a compressor 12 , a flow path selector 14 , a use side heat exchanger 202 , an expansion device 204 , and a heat exchanger 18 are interconnected via the refrigerant pipes, forming a refrigerant circuit in which refrigerant circulates.
  • the indoor unit 200 shown in FIG. 2 is installed in a room or the like to be air-conditioned and equipped, for example, with the use side heat exchanger 202 and expansion device 204 .
  • the use side heat exchanger 202 is designed to exchange heat, for example, between refrigerant and air, and is configured to include, for example, a heat transfer tube through which the refrigerant flows, and plural fins attached to the heat transfer tube.
  • An indoor fan (not illustrated) configured to send air to the use side heat exchanger 202 is installed in a neighborhood of the use side heat exchanger 202 .
  • the expansion device 204 is designed to expand refrigerant and is, for example, an LEV (linear electronic expansion valve) whose opening degree can be adjusted, but may be a capillary tube or the like whose opening degree cannot be adjusted.
  • LEV linear electronic expansion valve
  • the outdoor unit 1 shown in FIG. 1 is installed outdoors outside the room and functions as a heat source apparatus configured to discharge or supply heat produced by air-conditioning.
  • the outdoor unit 1 includes a compressor 12 , a first flow path selector 14 A, a second flow path selector 14 B, a first decompressor 16 A, a second decompressor 16 B, a first heat exchanger 18 A, a second heat exchanger 18 B, and an accumulator 26 .
  • first flow path selector 14 A and second flow path selector 14 B may be referred to simply as a flow path selector 14
  • first decompressor 16 A and second decompressor 16 B may be referred to simply as a decompressor 16
  • first heat exchanger 18 A and second heat exchanger 18 B may be referred to simply as a heat exchanger 18 .
  • the compressor 12 is designed to suck and compress refrigerant, and then discharge the refrigerant in a high-temperature, high-pressure state.
  • the compressor 12 is, for example, a capacity-controllable inverter compressor, but may be a constant velocity type.
  • the flow path selector 14 is designed to switch between heating flow path and cooling flow path according to operation mode, which is switched between cooling operation and heating operation, and is made up, for example, of a four-way valve.
  • the flow path selector 14 may be configured by combining plural two-way valves or the like.
  • the decompressor 16 is designed to decompress the refrigerant caused to flow into the heat exchanger 18 and is, for example, a motor-operated valve whose opening degree can be adjusted, but may be a capillary tube or the like whose opening degree cannot be adjusted.
  • the heat exchanger 18 is designed to exchange heat between refrigerant and air, and is configured to include, for example, a heat transfer tube through which the refrigerant flows, and plural fins attached to the heat transfer tube.
  • the heat transfer tube has, for example, a circular or flat shape.
  • the fins are disposed in a direction parallel to a direction in which air flows.
  • the accumulator 26 is designed to accumulate the refrigerant and is connected to a suction side of the compressor 12 . Of the refrigerant accumulated in the accumulator 26 , the compressor 12 sucks gas refrigerant.
  • each of the first flow path selector 14 A and second flow path selector 14 B shown in FIG. 1 is interconnecting flow paths as indicated by dashed lines. That is, the first flow path selector 14 A and second flow path selector 14 B are connecting a discharge side of the compressor 12 to the first heat exchanger 18 A and second heat exchanger 18 B while connecting the suction side of the compressor 12 to the use side heat exchanger 202 of the indoor unit 200 shown in FIG. 2 via the accumulator 26 .
  • the refrigerant condensed by flowing through the first heat exchanger 18 A and second heat exchanger 18 B flows out of the outdoor unit 1 and flows into the indoor unit 200 shown in FIG. 2 .
  • the refrigerant flowing into the indoor unit 200 is expanded in the expansion device 204 and flows through the use side heat exchanger 202 .
  • the refrigerant evaporated while flowing through the use side heat exchanger 202 flows out of the indoor unit 200 and flows into the outdoor unit 1 shown in FIG. 1 .
  • the refrigerant flowing into the outdoor unit 1 is accumulated in the accumulator 26 via the first flow path selector 14 A.
  • the refrigerant accumulated in the accumulator 26 is sucked into the compressor 12 and compressed again.
  • each of the first flow path selector 14 A and second flow path selector 14 B shown in FIG. 1 is interconnecting flow paths as indicated by solid lines. That is, the first flow path selector 14 A and second flow path selector 14 B are connecting the discharge side of the compressor 12 to the use side heat exchanger 202 of the indoor unit 200 shown in FIG. 2 while connecting the suction side of the compressor 12 shown in FIG. 1 to the first heat exchanger 18 A and second heat exchanger 18 B via the accumulator 26 .
  • the refrigerant compressed by the compressor 12 flows out of the outdoor unit 1 via the first flow path selector 14 A and flows into the indoor unit 200 shown in FIG. 2 .
  • the refrigerant flowing into the indoor unit 200 flows to the use side heat exchanger 202 , condensed, and expanded in the expansion device 204 .
  • the refrigerant expanded in the expansion device 204 flows out of the indoor unit 200 and flows into the outdoor unit 1 shown in FIG. 1 .
  • the refrigerant flowing into the outdoor unit 1 is decompressed in the first decompressor 16 A and second decompressor 16 B and flows through the first heat exchanger 18 A and second heat exchanger 18 B.
  • the refrigerant evaporated while flowing through the first heat exchanger 18 A and second heat exchanger 18 B is accumulated in the accumulator 26 via the first flow path selector 14 A and second flow path selector 14 B.
  • the refrigerant accumulated in the accumulator 26 is sucked into the compressor 12 and compressed again.
  • FIG. 3 is a diagram of a front face and left side face of the outdoor unit according to Embodiment 1 of the present invention as viewed obliquely
  • FIG. 4 is a diagram of a rear face and right side face of the outdoor unit shown in FIG. 3 as viewed obliquely
  • FIG. 5 is a diagram schematically showing a cross section of a heat exchange chamber of the outdoor unit shown in FIGS. 3 and 4
  • FIG. 6 is a diagram schematically showing a cross section of that part of the outdoor unit shown in FIGS. 3 and 4 in which a fan unit is housed
  • FIG. 7 is a diagram describing how a mounting member shown in FIG. 6 is attached to a body casing
  • FIG. 8 is an enlarged view of a fan motor and the mounting member shown in FIG. 7 .
  • a specific structure of the outdoor unit 1 according to the present embodiment will be described with reference to FIGS. 3 to 8 .
  • the outdoor unit 1 includes a body casing 101 , which houses a compressor 12 , a flow path selector 14 , a decompressor 16 , a heat exchanger 18 , an accumulator 26 , and other components inside.
  • the body casing 101 has, for example, a cuboid shape, in which intake portions 104 configured to suck air are formed in lateral sides and a blowout portion 109 is formed in a top to blow out air. That is, the outdoor unit 1 according to the present embodiment sucks air from the lateral sides and blows out the sucked air through the top.
  • a lower part of the body casing 101 is covered with an open/close panel 102 A, a left lower panel 102 B, a rear lower panel 102 C, and a right lower panel 102 D, forming a machine chamber 103 in which, for example, the compressor 12 is housed.
  • the open/close panel 102 A, left lower panel 102 B, rear lower panel 102 C, and right lower panel 102 D are substantially flat-plate members, making up an outer shell of a lower part of the outdoor unit 1 .
  • the open/close panel 102 A is disposed in a lower part of the front face of the outdoor unit 1
  • the left lower panel 102 B is disposed in a lower part of the left side face of the outdoor unit 1
  • the rear lower panel 102 C is disposed in a lower part of the rear face of the outdoor unit 1
  • the right lower panel 102 D is disposed in a lower part of the right side face of the outdoor unit 1 .
  • the open/close panel 102 A shown in FIG. 3 is attached openably/closably to the body casing 101 . By opening the open/close panel 102 A, it is possible to perform maintenance and the like of the compressor 12 , electrical component box (not illustrated), and the like disposed inside the body casing 101 . Note that in the outdoor unit 1 in the example of the present embodiment, all or part of the open/close panel 102 A, left lower panel 102 B, rear lower panel 102 C, and right lower panel 102 D may be omitted.
  • a heat exchange chamber 105 housing the heat exchanger 18 is formed on top of the machine chamber 103 of the body casing 101 .
  • the intake portions 104 configured to suck air are provided all around the body casing 101 . That is, the body casing 101 includes a front intake portion 104 A configured to suck air through a front face, a left intake portion 104 B configured to suck air through a left side face, a rear intake portion 104 C configured to suck air through a rear face, and a right intake portion 104 D configured to suck air through a right face.
  • a panel in which plural air inlets configured to pass air is formed on each of the front intake portion 104 A, left intake portion 104 B, rear intake portion 104 C, and right intake portion 104 D.
  • the outdoor unit 1 may be a frame-type outdoor unit in which panels are omitted.
  • an upper part of the heat exchange chamber 105 of the body casing 101 forms a bell-mouth unit 106 .
  • the bell-mouth unit 106 has a cylindrical shape, with the blowout portion 109 formed in a top to blow out air.
  • a fan 22 is housed inside the bell-mouth unit 106 .
  • a fan guard portion 110 configured to cover a top of the fan 22 is mounted on the bell-mouth unit 106 .
  • An outer periphery of the fan guard portion 110 is fixed to the bell-mouth unit 106 .
  • the heat exchanger 18 of the example of the present embodiment includes four heat exchange units configured to exchange heat with the air sucked through the intake portions 104 formed in four side faces. That is, the air taken in through the front intake portion 104 A is heat-exchanged by passing through that part of a first heat exchanger 18 A that faces the front intake portion 104 A. The air taken in through the left intake portion 104 B is heat-exchanged by passing through that part of a second heat exchanger 18 B that faces the left intake portion 104 B. The air taken in through the rear intake portion 104 C is heat-exchanged by passing through that part of the second heat exchanger 18 B that faces the rear intake portion 104 C.
  • the air taken in through the right intake portion 104 D is heat-exchanged by passing through that part of the first heat exchanger 18 A that faces the right intake portion 104 D. Then, the air heat-exchanged by passing through the heat exchanger 18 is blown out through the blowout portion 109 shown in FIGS. 3 and 4 .
  • aerodynamic performance has been improved since air is sucked uniformly from all around the outdoor unit 1 including the front face, both side faces, and rear face of the outdoor unit 1 .
  • the outdoor unit 1 in the example of the present embodiment since the aerodynamic performance has been improved, electric power used to drive the fan is reduced, and noise produced when the fan is driven is reduced as well.
  • the fan unit 24 includes the fan 22 and a fan motor 23 .
  • the fan unit 24 is mounted on the body casing 101 using a mounting member 90 .
  • the mounting member 90 includes fixture portions 92 fixed to the body casing 101 and a fan-unit holding portion 94 holding the fan motor 23 of the fan unit 24 .
  • the fixture portions 92 are formed on opposite sides of the fan-unit holding portion 94 and fixed to the body casing 101 . That is, the fixture portions 92 are fixed to a front-side frame 86 in upper front part of the body casing 101 and to a rear-side frame 87 in upper rear part of the body casing 101 .
  • the fixture portions 92 may be fixed to a frame on a left side face of the body casing 101 and a frame on a right side face of the body casing 101 .
  • the fixture portions 92 and fan-unit holding portion 94 are connected together by connecting portions 93 and the fan-unit holding portion 94 retreats downward from the fixture portions 92 .
  • the mounting member 90 is shaped such that the fan-unit holding portion 94 projects downward from the fixture portions 92 .
  • the mounting member 90 is formed by bending or another process, and the fixture portions 92 , the connecting portions 93 , and the fan-unit holding portion 94 are formed integrally.
  • the fan motor 23 is fixed to the fan-unit holding portion 94 retreating downward from the fixture portions 92 .
  • the fan motor 23 includes a drive shaft 23 A protruding upward. As shown in FIG. 6 , the fan 22 is mounted on the drive shaft 23 A of the fan motor 23 .
  • the fan 22 includes a boss 22 A in a center and blades 22 B formed around the boss 22 A. An upper part of the boss 22 A retreats below tops of the blades 22 B, reducing the risk of contact between the fan guard portion 110 and the fan 22 . This is because an outer periphery of the fan guard portion 110 is fixed to the bell-mouth unit 106 . Therefore, as indicated by an imaginary line 110 A, when a force is applied to the fan guard portion 110 , a central portion of the fan guard portion 110 is most prone to flexure. In the example of the present embodiment, since the boss 22 A in the center of the fan 22 retreats downward from the blades 22 B, the risk of contact between the fan guard portion 110 and the fan 22 is curbed.
  • FIG. 9 is a diagram describing a relationship between radial position of the fan and intake rate of the fan.
  • a suction rate decreases on that side of the blades 22 B that is closer to the boss 22 A and increases on that side of the blades 22 B that is farther from the boss 22 A. Therefore, on an outer side of the blades 22 B, by providing a large distance between the blades 22 B and the mounting member 90 , it is possible to reduce intake loss of the fan 22 .
  • FIG. 9 is a diagram describing a relationship between radial position of the fan and intake rate of the fan.
  • a connection position between the fixture portion 92 and the connecting portion 93 is located outward of an intermediate position of a straight line joining a connecting portion between the boss 22 A and each blade 22 B to an end portion of the blade 22 B. That is, the mounting member 90 is shaped to start bending down from the fixture portion 92 at a position outward of an intermediate position of the blade 22 B.
  • the connecting portion 93 is shaped to bend down vertically from the fixture portion 92 , but may be shaped to bend down obliquely from the fixture portion 92 .
  • a distance between a lower part of the blade 22 B and the mounting member 90 is equal to a length between the lower part of the blade 22 B and the fan-unit holding portion 94 , making it possible to reduce intake loss of the fan 22 .
  • the intake loss of the fan 22 can be reduced by placing the connecting position between the fixture portion 92 and the connecting portion 93 outward of the intermediate position of the straight line joining the connecting portion between the boss 22 A and each blade 22 B to the end portion of the blade 22 B, more preferably the intake loss of the fan 22 can be reduced by placing the connecting position between the fixture portion 92 and the connecting portion 93 outward of the end portion of the blade 22 B.
  • FIG. 10 is a diagram of Comparative Example 1, which is a comparative example to FIG. 5
  • FIG. 11 is a diagram of Comparative Example 2, which is a comparative example to FIG. 6
  • FIG. 12 is a diagram comparing the outdoor unit of Embodiment 1, Comparative Example 1, and Comparative Example 2 with one another in terms of intake/exhaust losses of the outdoor unit.
  • A represents intake loss of the fan itself
  • B represents intake loss of the fan caused by a mounting member
  • C represents intake loss caused by placement of a heat exchanger
  • D represents exhaust loss caused during exhaust.
  • a heat exchanger 180 placed in a heat exchange chamber 150 has a double-bend shape.
  • Comparative Example 1 is configured such that the air sucked through three side faces—namely, a side face 140 A, a side face 140 B, and a side face 140 C—will pass through the heat exchanger 180 .
  • air is not sucked uniformly in a circumferential direction of the heat exchange chamber 150 , resulting in poor intake balance and thereby increasing the intake loss C due to the placement of the heat exchanger as shown in FIG. 12 .
  • a fan unit 240 including a fan 220 and a fan motor 230 is mounted on a body casing via a linear mounting member 190 .
  • a boss 220 A in a central portion of the fan 220 is located above blades 220 B and closest to a fan guard portion 111 .
  • the fan guard portion 111 is most prone to flexure in a central portion as indicated by an imaginary line 111 A. Therefore, in Comparative Example 2, there is increased risk of contact between the fan guard portion 111 and the boss 220 A.
  • the boss 22 A retreats downward from the blades 22 B as shown in FIG. 6 , the risk of contact between the fan guard portion 110 and the fan 22 is reduced.
  • the outdoor unit 1 according to the present embodiment does not need to make the lower parts of the blades 22 B protrude greatly downward to obtain aerodynamic characteristics. Therefore, the outdoor unit 1 according to the present embodiment allows a greater distance between the lower parts of the blades 22 B and the mounting member 90 , reducing the intake loss B of the fan caused by the mounting member as shown in FIG. 12 .
  • the fan unit 24 is mounted on the body casing 101 via the mounting member 90 .
  • the mounting member 90 includes the fixture portion 92 fixed to the body casing and the fan-unit holding portion 94 holding the fan unit 24 , where the fan-unit holding portion 94 retreats from the fixture portion 92 .
  • the outdoor unit 1 is downsized in a height direction. Also, since the fan unit 24 is held in the fan-unit holding portion 94 retreating downward from the fixture portion 92 , a center of gravity of the outdoor unit 1 can be lowered.
  • the boss 22 A in the center of the fan 22 retreats downward from the tops of the blades 22 B. Since the outer periphery of the fan guard portion 110 covering the top of the fan 22 is fixed to the bell-mouth unit 106 of the body casing 101 , the fan guard portion 110 is prone to flexure in the central portion. In the outdoor unit 1 according to the present embodiment, since the boss 22 A in the center of the fan 22 retreats, the risk of contact between the fan 22 and the fan guard portion 110 is curbed, improving safety.
  • the boss 22 A of the fan 22 retreats downward from the tops of the blades 22 B, and the blades 22 B partially protrude above the boss 22 A. Therefore, in the present embodiment, the lower parts of the blades 22 B can be placed at a higher level, allowing a greater distance between the lower parts of the blade 22 B and the mounting member 90 . Thus, the present embodiment reduces the intake loss of the fan 22 caused by the mounting member 90 and thereby reduces noise as well.
  • the present invention is not limited to the above embodiment, and various changes can be made without departing from the scope of the present invention. That is, the configurations of the above embodiment may be improved as appropriate and at least part of the configurations may be substituted with another configuration. Furthermore, components whose arrangement is not limited specifically are not limited to the arrangement disclosed in the embodiment and may be placed at positions where the functions of the components can be achieved.

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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)
US15/764,111 2015-11-30 2015-11-30 Outdoor unit Abandoned US20180274800A1 (en)

Applications Claiming Priority (1)

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PCT/JP2015/083553 WO2017094056A1 (ja) 2015-11-30 2015-11-30 室外ユニット

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US15/764,111 Abandoned US20180274800A1 (en) 2015-11-30 2015-11-30 Outdoor unit

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US (1) US20180274800A1 (ja)
EP (1) EP3385627B1 (ja)
JP (1) JP6482679B2 (ja)
CN (1) CN108431509A (ja)
WO (1) WO2017094056A1 (ja)

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US20180266707A1 (en) * 2017-03-15 2018-09-20 Fujitsu General Limited Outdoor unit of air conditioner
US10684054B2 (en) * 2017-05-22 2020-06-16 Trane International Inc. Tension support system for motorized fan

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US20170248330A1 (en) * 2016-02-29 2017-08-31 Fujitsu General Limited Outdoor unit of air conditioner

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US20170248330A1 (en) * 2016-02-29 2017-08-31 Fujitsu General Limited Outdoor unit of air conditioner

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180266707A1 (en) * 2017-03-15 2018-09-20 Fujitsu General Limited Outdoor unit of air conditioner
US10495329B2 (en) * 2017-03-15 2019-12-03 Fujitsu General Limited Outdoor unit of air conditioner
US10684054B2 (en) * 2017-05-22 2020-06-16 Trane International Inc. Tension support system for motorized fan

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Publication number Publication date
EP3385627B1 (en) 2023-04-12
CN108431509A (zh) 2018-08-21
JPWO2017094056A1 (ja) 2018-04-19
EP3385627A4 (en) 2018-12-05
JP6482679B2 (ja) 2019-03-13
WO2017094056A1 (ja) 2017-06-08
EP3385627A1 (en) 2018-10-10

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