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WO2016006106A1 - Unité extérieure de climatiseur - Google Patents

Unité extérieure de climatiseur Download PDF

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Publication number
WO2016006106A1
WO2016006106A1 PCT/JP2014/068606 JP2014068606W WO2016006106A1 WO 2016006106 A1 WO2016006106 A1 WO 2016006106A1 JP 2014068606 W JP2014068606 W JP 2014068606W WO 2016006106 A1 WO2016006106 A1 WO 2016006106A1
Authority
WO
WIPO (PCT)
Prior art keywords
inverter
outdoor
air conditioner
outdoor unit
compressor
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.)
Ceased
Application number
PCT/JP2014/068606
Other languages
English (en)
Japanese (ja)
Inventor
真 三浦
孝 大石
将志 大田
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.)
Hitachi Global Life Solutions Inc
Original Assignee
Hitachi Appliances Inc
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 Hitachi Appliances Inc filed Critical Hitachi Appliances Inc
Priority to PCT/JP2014/068606 priority Critical patent/WO2016006106A1/fr
Publication of WO2016006106A1 publication Critical patent/WO2016006106A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to an outdoor unit of an air conditioner including a plurality of outdoor fans.
  • the outdoor unit of the air conditioner is provided with a compressor that compresses refrigerant, an outdoor heat exchanger, and an outdoor fan for sending air to the outdoor heat exchanger.
  • a compressor that compresses refrigerant
  • an outdoor heat exchanger for sending air to the outdoor heat exchanger.
  • two outdoor fans for example, an inverter board dedicated to a compressor having an inverter circuit for driving the compressor, and the two outdoor fans, respectively
  • inverter boards dedicated to the fans each having an inverter circuit dedicated to each outdoor fan.
  • the inverter board dedicated to the compressor and the inverter board dedicated to the two fans are provided with microcomputers (arithmetic units) for controlling the respective inverter circuits. Therefore, in a conventional outdoor unit having two outdoor fans, three microcomputers are required to mount the microcomputers on three inverter boards.
  • noise is generated from the plurality of inverter boards.
  • noise from the inverter board may travel through the wiring and generate noise from the wiring. Since such noise affects peripheral devices, a device for suppressing the generation of noise has been conventionally made. For example, one described in Patent Document 1 is known.
  • each inverter controlled component is controlled.
  • An inverter board is provided for each inverter controlled component.
  • one compressor inverter board having an inverter (compressor motor inverter) circuit for driving the compressor and an inverter (fan) for driving the outdoor fan
  • an inverter board for driving the outdoor fan
  • Each inverter board is provided with a microcomputer for controlling the inverter circuit. In this case, a total of three microcomputers are required.
  • the number of inverter boards corresponding to the number of inverter controlled parts is required, and the commercial power source and each inverter board, and each inverter board and the inverter controlled part are connected. In order to do so, a large number of wirings were required. For this reason, since the noise generated from each inverter board is placed on the wiring, there is a problem that the noise that affects the operation of the peripheral device cannot be sufficiently reduced.
  • An object of the present invention is to provide an outdoor unit for an air conditioner that can reduce the number of wires connected to an inverter board to reduce noise generated from the wires, and also reduce the number of arithmetic devices that control the inverter circuit. There is in getting.
  • the present invention provides an outdoor unit of an air conditioner including a compressor for compressing a refrigerant, an outdoor heat exchanger, and a plurality of outdoor fans for ventilating the outdoor heat exchanger.
  • a control board for controlling the refrigeration cycle; an inverter circuit for the compressor for driving the compressor; a plurality of inverter circuits for the fans for driving each of the plurality of outdoor fans; and a command from the control board
  • an inverter board having an arithmetic unit (microcomputer) for controlling the compressor inverter circuit and the plurality of fan inverter circuits, and an electric box containing the control board and the inverter board.
  • the number of wires connected to the inverter board can be reduced, so that noise generated from the wires can be reduced, and the number of arithmetic devices for controlling the inverter circuit is also reduced. An effect that can be reduced is obtained.
  • FIG. 1 It is a systematic diagram explaining the refrigerating cycle of the air conditioner in Example 1 of this invention. It is a block diagram explaining the structure in the electric box in Example 1 of the outdoor unit of the air conditioner of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining schematic structure of the outdoor unit in Example 1 of this invention, and is a front view which removes and shows a front panel. It is the top view which removed the upper surface panel and looked at the outdoor unit of FIG. 3 from upper direction.
  • FIG. 4 is a side view of the outdoor unit of FIG. 3 viewed from the side with the side panel removed.
  • FIG. 6 is a layout diagram of inverter circuits and microcomputers on the inverter board shown in FIGS. 2 to 5;
  • an air conditioner 1 is configured by connecting an outdoor unit 2 and an indoor unit 3 via a refrigerant pipe 5.
  • the outdoor unit 2 includes refrigeration cycle components such as a compressor 8, an outdoor heat exchanger 9, an accumulator 10, and a four-way valve 11 in a casing.
  • the compressor 8 is provided with a compressor motor 12 for driving a compression mechanism (not shown).
  • Reference numeral 13 denotes an outdoor fan for passing outdoor air through the outdoor heat exchanger 9, and a blade portion 13 ′ of the outdoor fan 13 is configured to be driven by a fan motor 14.
  • An electric box 15 accommodates a control board for controlling the entire refrigeration cycle, an inverter board for controlling the compressor motor 12 and the fan motor 14, and the like.
  • the outdoor fan 13 includes two units 13a and 13b as shown in FIG. An outdoor fan is provided.
  • the indoor unit 3 is provided with an indoor heat exchanger 16, an expansion valve 17, an indoor fan 18 for ventilating the indoor heat exchanger 16, and the like.
  • the refrigerant compressed by the compressor 8 passes through the accumulator 10 and then enters the indoor unit 3 as shown in FIG.
  • the indoor side heat exchanger 16 exchanges heat with the room air to heat the room air to heat the room, and condenses itself into a liquid refrigerant.
  • the liquid refrigerant is expanded by the expansion valve 17 to become a gas-liquid two-phase flow, enters the outdoor unit 2, and evaporates by exchanging heat with outdoor air in the outdoor heat exchanger 9.
  • the evaporated gas refrigerant constitutes a refrigeration cycle in which it is sucked into the compressor 8 via the four-way valve 11 and compressed again.
  • the four-way valve 11 is switched, and the compressed refrigerant gas from the compressor 8 flows to the outdoor heat exchanger 9 side and is condensed, and is expanded by the expansion valve 17 to become a low-pressure low-temperature refrigerant.
  • the indoor side heat exchanger 16 cools the room air to cool the room, evaporates itself into a gas refrigerant, and passes through the four-way valve 11 to be sucked into the compressor 8 to constitute a refrigeration cycle. To do.
  • FIG. 2 is a block diagram for explaining the configuration inside the electric box in the first embodiment of the outdoor unit of the air conditioner of the present invention, and is a diagram showing the configuration inside the electric box 15 shown in FIG.
  • the electric box 15 is formed of a metal box so that it does not spread to the outside even if an element in the electric box 15 ignites.
  • a control board 20 on which a control unit for controlling the entire refrigeration cycle shown in FIG. 1 is mounted, a fan motor 14 for the outdoor fan 13, and a compressor for the compressor 8.
  • An inverter board 21 for controlling the motor 12 is provided.
  • control board 20 and the inverter board 21 are configured as separate boards, and these are housed in one electric box 15.
  • the control board 20 is equipped with a control unit (not shown) for controlling the above-described refrigeration cycle and a power supply circuit 23 for operating the control unit, and the control unit constitutes a refrigeration cycle.
  • control unit for controlling the above-described refrigeration cycle
  • power supply circuit 23 for operating the control unit
  • the control unit constitutes a refrigeration cycle.
  • various devices such as the four-way valve 11 and the expansion valve 17 that are connected to the inverter board 21, it also controls the rotational speed commands of the compressor 12 and the outdoor fan 13. It is configured.
  • the inverter board 21 has a compressor inverter circuit 24 for sending a desired current to the compressor motor 12 of the compressor 8 and driving it, and the plurality of outdoor fans 13 (13a, 13a, 13b) (see FIG. 3), a plurality of fan inverter circuits 25a and 25b for sending desired currents to the respective fan motors 14a and 14b and driving them, and based on a command from the control board 20
  • a compressor inverter circuit 24 and a microcomputer (microcomputer; arithmetic unit) 26 for controlling the plurality of fan inverter circuits 25a and 25b are provided.
  • the inverter board 21 includes a converter circuit (rectifier) 28 provided between a commercial power source 27 and each of the inverter circuits 24, 25 a, 25 b, and between the commercial power source 27 and the converter circuit 28.
  • a noise filter 29 is provided for removing noise included in the input current flowing through the converter circuit 28.
  • control power for operating the microcomputer 26 on the inverter board 21 is supplied from a power circuit 23 provided on the control board 20.
  • the power supply for operating the microcomputer 26 is supplied from the control board 20 to the microcomputer 26 of the inverter board 21 via wiring.
  • a power supply for driving the switching circuits of the inverter circuits 24, 25a, and 25b is provided on the inverter board 21.
  • the microcomputer 26 By providing a control power supply for the microcomputer of the inverter board 21 on the control board 20 side, even if a failure occurs in any of the inverter circuits 24, 25a, 25b, the microcomputer 26 The control power supply will not break down together. For example, even if a short circuit or the like occurs in any inverter circuit and an overcurrent flows, the influence of the overcurrent only reaches a power supply circuit (not shown) on the inverter board 21, and the power supply circuit of the control board 20 23 can be prevented.
  • the present invention is not limited to this form, and a power supply circuit for supplying control power to the microcomputer 26 may be provided on the inverter board 21.
  • FIG. 3 is a diagram illustrating a schematic configuration of the outdoor unit in the first embodiment, and is a front view showing a front side panel removed.
  • FIG. 4 is a plan view of the outdoor unit shown in FIG.
  • FIGS. 5 and 5 are side views of the outdoor unit shown in FIG. 3 as seen from the side with the side panel removed.
  • the blades of the outdoor fans 13a and 14b are not shown, and the wiring from the inverter board 21 to the fan motors 14a and 14b is shown.
  • 3 to 5 illustrate the arrangement of the connection wiring from the electric box 15 to the fan motors 14a and 14b and the connection wiring from the electric box 15 to the compressor 8.
  • the electric box 15 is provided on the upper side in the casing constituting the outdoor unit 2.
  • the control board 20, the inverter board 21 and the like are accommodated.
  • an L-shaped heat exchanger is arranged vertically on the back side of the outdoor unit 2, and as shown in FIG.
  • a frame 30 extending in the vertical direction is provided along the front portion of the outdoor heat exchanger 9.
  • the frame 30 is used to mount the fan motors 14a and 14b of the outdoor fans 13a and 13b.
  • the frame 30 is composed of two angle members.
  • the fan motor 14a is disposed below the two angle members.
  • the fan motor 14b is attached.
  • the blade portions 13 'of the outdoor fans 13a and 13b are attached to the motor shaft 14' of the fan motors 14a and 14b.
  • the plurality of indoor fans 13a and 13b are configured to have a horizontal blowing structure that sucks outdoor air from the rear side and blows it forward, and two fans are installed in the vertical direction. It has a configuration.
  • the electric box 15 is installed on the side of the outdoor fan 13a installed on the top as shown in FIG.
  • the compressor 8 is installed on the bottom plate in the outdoor unit 2 below the electric box 15.
  • the control board 20 provided in the electric box 15 is installed at a front portion in the electric box 15, and the inverter board 21 is located on the back side of the control board 20 and the back side of the inverter board 21.
  • the control board 20 and the inverter board 21 are installed separately so as to face the outdoor fan 13a.
  • a heat radiating fin 22 is provided on the back side of the inverter board 21, and the heat radiating fin 22 is cooled by the outside air ventilated by the outdoor fan 13a, and a semiconductor element constituting the inverter circuits 24, 25a, 25b. This prevents the semiconductor from being thermally destroyed by the heat generated.
  • FIG. 6 is a layout diagram of the inverter circuits 24, 25a, 25b and the microcomputer 26 on the inverter board 21 shown in FIGS.
  • the fan inverter circuits 25a and 25b for driving the outdoor fans 13a and 13b, respectively, are disposed on the inverter board 21 and drive the compressor 8.
  • the compressor inverter circuit 24 is disposed below the inverter board 21.
  • the microcomputer (arithmetic unit) 26 is disposed between the fan inverter circuits 25a and 25b and the compressor inverter circuit 24, and the three inverter circuits 24, 25a and 25b are connected to one microcomputer 26. It is configured to be controlled by.
  • the converter circuit 28 and the noise filter 29 shown in FIG. 2 are not shown.
  • the wiring 31 from the inverter board 21 to the outdoor fans 13a and 14b is taken out from the upper part of the electric box 15 as shown in FIG.
  • the plurality of outdoor fans are disposed along the space above the outdoor heat exchanger 9, that is, along the frame at the top of the casing of the outdoor unit 2, and further along the frame 30 from here.
  • the fan motors 14a and 14b of 13a and 13b are connected respectively.
  • the wiring 32 from the inverter board 21 to the compressor 8 is taken out from the lower part of the electric box 15, and the machine room in which the compressor 8 and the like are installed, the outdoor heat exchanger 9 and the outdoor fan 13a. , 13b are connected to the compressor 8 along a partition plate (not shown) that partitions the heat exchanger chamber.
  • 33 shown in FIG. 6 is an input wiring from the commercial power supply 27 or the like.
  • the wiring 31 from the inverter board 21 to the outdoor fans 13a and 13b is arranged along the frame 30 and the like, so that it contacts the rotating parts such as the outdoor fans 13a and 13b.
  • the connection can be made in the shortest while ensuring reliability.
  • the wiring 32 from the inverter board 21 to the compressor 8 can be connected to the compressor installed almost directly below the electric box 15, it can be connected in the shortest without intersecting with the wiring 31. .
  • the inverter board 21 includes not only the compressor inverter circuit 24 but also a plurality of fan inverter circuits 25a and 25b corresponding to a plurality of outdoor fans. Since the inverter circuits 24, 25a and 25b are configured to be controlled, not only the number of microcomputers 26 can be reduced, but also the wiring can be simplified and the number of wirings from the commercial power supply 27 (see FIG. 2) can be reduced.
  • the number of wirings can be reduced and the length of the whole wiring can be shortened, so that the generation of noise can be suppressed and the influence of noise on peripheral devices can be reduced.
  • a service panel 34 is provided on the front side of the electric box 15, and by opening the service panel 34, as shown in FIG. It is arranged so that it can be seen from the front.
  • a service panel 35 is provided on the side of the electric box 15, and by opening the service panel 35, the inverter board 21 is arranged so that it can be seen from the side as shown in FIG.
  • the service panel 34 on the front side of the electric box and the service panel 35 on the side surface are integrally and detachable, the service panels 34 and 35 can be removed at the same time. This maintenance work can be performed more easily.
  • the control board for controlling the entire refrigeration cycle, the inverter circuit for the compressor for driving the compressor, and each of the plurality of outdoor fans are driven.
  • An inverter board comprising a plurality of fan inverter circuits and an arithmetic unit (microcomputer) for controlling the compressor inverter circuit and the plurality of fan inverter circuits based on a command from the control board; Since the electric box containing the board and the inverter board is provided, the number of wirings connected to the inverter board can be reduced, and as a result, noise generated from the wiring can also be reduced. Moreover, the effect that the number of the said arithmetic units which control an inverter circuit can also be reduced is acquired.
  • the wiring from the inverter board to the plurality of outdoor fans is routed along the frame, so that contact with rotating parts such as the outdoor fan is surely avoided and the connection is made in the shortest time. can do.
  • the wiring from the inverter board to the compressor can be made shorter, and from this point, the generation of noise can be suppressed and the influence of noise on peripheral devices can be reduced.
  • inverter circuits are controlled by one arithmetic device, not only the number of arithmetic devices can be reduced, but also the wiring can be simplified and the entire length of the wiring can be further increased. Since it can be shortened, generation of noise can be suppressed also from this point.
  • this invention is not limited to an above-described Example, Various modifications are included.
  • a recording device such as a memory, a hard disk, an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, or a DVD. Can be put in.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne une unité extérieure de climatiseur qui comprend un compresseur, qui comprime un fluide frigorigène, un échangeur de chaleur extérieur, et une pluralité de ventilateurs extérieurs, qui ventilent l'échangeur de chaleur extérieur. L'invention concerne également : une carte de commande (20) qui commande un cycle de réfrigération ; une carte d'onduleur (21) comprenant un circuit d'onduleur de compresseur (24) destiné à piloter le compresseur, une pluralité de circuits d'onduleur de ventilateur (25a, 25b), destinés respectivement à piloter la pluralité de ventilateurs extérieurs, et un dispositif de calcul (26), qui commande le circuit d'onduleur de compresseur et la pluralité de circuits d'onduleur de ventilateur ; et un boîtier électrique (15) qui stocke la carte de commande et la carte d'onduleur. En conséquence, il est possible de réduire le bruit résultant du câblage en réduisant le nombre de fils reliés à la carte d'onduleur, et il est possible de réduire le nombre de dispositifs de calcul destinés à commander des circuits d'onduleur.
PCT/JP2014/068606 2014-07-11 2014-07-11 Unité extérieure de climatiseur Ceased WO2016006106A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/068606 WO2016006106A1 (fr) 2014-07-11 2014-07-11 Unité extérieure de climatiseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/068606 WO2016006106A1 (fr) 2014-07-11 2014-07-11 Unité extérieure de climatiseur

Publications (1)

Publication Number Publication Date
WO2016006106A1 true WO2016006106A1 (fr) 2016-01-14

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PCT/JP2014/068606 Ceased WO2016006106A1 (fr) 2014-07-11 2014-07-11 Unité extérieure de climatiseur

Country Status (1)

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WO (1) WO2016006106A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018142738A1 (fr) * 2017-02-02 2018-08-09 日立ジョンソンコントロールズ空調株式会社 Climatiseur
JP2022113826A (ja) * 2017-03-28 2022-08-04 ダイキン工業株式会社 熱源ユニット
WO2023112987A1 (fr) * 2021-12-15 2023-06-22 ダイキン工業株式会社 Dispositif à cycle frigorifique

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000350484A (ja) * 1999-06-04 2000-12-15 Hitachi Ltd 空気調和機およびブラシレスモータ制御装置
JP2002250544A (ja) * 2001-02-22 2002-09-06 Toshiba Kyaria Kk 空気調和機の室外機
JP2003143871A (ja) * 2001-11-01 2003-05-16 Daikin Ind Ltd 電動機制御モジュールおよびそれを備えた空気調和装置
JP2005077016A (ja) * 2003-09-02 2005-03-24 Daikin Ind Ltd 電子回路基板支持体、電装品ユニットおよび電装品ユニット取付方法
WO2006068147A1 (fr) * 2004-12-22 2006-06-29 Toshiba Carrier Corporation Machine d’environnement exterieur pour climatiseur
JP2008138941A (ja) * 2006-12-01 2008-06-19 Daikin Ind Ltd 空気調和装置の電装品ユニット、およびこれを備えた空気調和装置の室外機
JP2008144982A (ja) * 2006-12-06 2008-06-26 Daikin Ind Ltd 空気調和機の室外機
JP2008281221A (ja) * 2007-05-08 2008-11-20 Sharp Corp 空気調和機の室外機
WO2014024405A1 (fr) * 2012-08-08 2014-02-13 東芝キヤリア株式会社 Unité extérieure pour dispositif à cycle de réfrigération

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000350484A (ja) * 1999-06-04 2000-12-15 Hitachi Ltd 空気調和機およびブラシレスモータ制御装置
JP2002250544A (ja) * 2001-02-22 2002-09-06 Toshiba Kyaria Kk 空気調和機の室外機
JP2003143871A (ja) * 2001-11-01 2003-05-16 Daikin Ind Ltd 電動機制御モジュールおよびそれを備えた空気調和装置
JP2005077016A (ja) * 2003-09-02 2005-03-24 Daikin Ind Ltd 電子回路基板支持体、電装品ユニットおよび電装品ユニット取付方法
WO2006068147A1 (fr) * 2004-12-22 2006-06-29 Toshiba Carrier Corporation Machine d’environnement exterieur pour climatiseur
JP2008138941A (ja) * 2006-12-01 2008-06-19 Daikin Ind Ltd 空気調和装置の電装品ユニット、およびこれを備えた空気調和装置の室外機
JP2008144982A (ja) * 2006-12-06 2008-06-26 Daikin Ind Ltd 空気調和機の室外機
JP2008281221A (ja) * 2007-05-08 2008-11-20 Sharp Corp 空気調和機の室外機
WO2014024405A1 (fr) * 2012-08-08 2014-02-13 東芝キヤリア株式会社 Unité extérieure pour dispositif à cycle de réfrigération

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018142738A1 (fr) * 2017-02-02 2018-08-09 日立ジョンソンコントロールズ空調株式会社 Climatiseur
JP2022113826A (ja) * 2017-03-28 2022-08-04 ダイキン工業株式会社 熱源ユニット
JP7271077B2 (ja) 2017-03-28 2023-05-11 ダイキン工業株式会社 電力変換装置及びそれを備えた熱源ユニット
WO2023112987A1 (fr) * 2021-12-15 2023-06-22 ダイキン工業株式会社 Dispositif à cycle frigorifique
JP2023088895A (ja) * 2021-12-15 2023-06-27 ダイキン工業株式会社 冷凍サイクル装置
JP7332963B2 (ja) 2021-12-15 2023-08-24 ダイキン工業株式会社 冷凍サイクル装置

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