EP3346199B1 - Outdoor unit - Google Patents

Outdoor unit Download PDF

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Publication number
EP3346199B1
EP3346199B1 EP15902943.8A EP15902943A EP3346199B1 EP 3346199 B1 EP3346199 B1 EP 3346199B1 EP 15902943 A EP15902943 A EP 15902943A EP 3346199 B1 EP3346199 B1 EP 3346199B1
Authority
EP
European Patent Office
Prior art keywords
terminal block
outdoor unit
securing
plate
securing plate
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.)
Active
Application number
EP15902943.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3346199A1 (en
EP3346199A4 (en
Inventor
Yuto Takeuchi
Kentaro Yonehara
Kazuho Ito
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
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP3346199A1 publication Critical patent/EP3346199A1/en
Publication of EP3346199A4 publication Critical patent/EP3346199A4/en
Application granted granted Critical
Publication of EP3346199B1 publication Critical patent/EP3346199B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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

Definitions

  • the present invention relates to a terminal block securing device of an outdoor unit.
  • a related-art outdoor unit of an air-conditioning apparatus components such as a compressor, a heat exchanger, and fan are housed in a housing.
  • the fan is driven to supply outside air to the heat exchanger and the compressor is operated to circulate refrigerant of a refrigeration cycle.
  • a power source for operating the compressor, the fan, and so forth is supplied to a terminal block of the outdoor unit or an indoor unit through power wiring from the outside.
  • the outdoor unit and the indoor unit are connected to each other through signal wiring for control and connection wiring for the power, and these types of wiring are also connected to the terminal block (see, for example, Patent Literature 1).
  • Patent Literature 2 describes an outdoor unit with a heat exchange chamber and a machine chamber and an electric component box comprising a main body portion with a first electrical component unit and a protrusion portion with a second electrical component unit protruding into the heat exchange chamber. The main body portion and the protrusion portion are joined to form an air flowing path for sucking cooling air passing over electrical parts of the first electrical component unit and to a heat sink of the second electrical component unit. Patent Literature 2 thereby discloses an outdoor unit comprising the features of the preamble of claim 1.
  • Patent Literature 3 discloses an outdoor unit with a plate for terminal blocks, the plate being bent to form different planes being inclined to each other.
  • a plurality of terminal blocks are arranged on a flat plate-shaped terminal block securing plate. Accordingly, when the number of indoor units connected to the outdoor unit is increased or external signals (for example, demand signals of a power usage amount monitoring board or control signals of a home energy management system (HEMS) or the like) are connected as extended functions, the number of terminal blocks two-dimensionally increases.
  • HEMS home energy management system
  • An object of the present invention is to improve work efficiency by preventing wiring from becoming complex during connection of various types of wiring to a plurality of terminal blocks and to standardize components of an outdoor unit by fixing the dimension of a terminal block securing plate in the horizontal direction.
  • the outdoor unit includes a first terminal block and a second terminal block that are arranged in a vertical direction.
  • the outdoor unit also includes a terminal block securing device that includes a first terminal block securing plate to which the first terminal block is attached and a second terminal block securing plate to which the second terminal block is attached.
  • the terminal block securing device has a first securing surface of the first terminal block securing plate to which the first terminal block is secured and a second securing surface of the second terminal block securing plate to which the second terminal block is secured.
  • the first securing surface and the second securing surface are set at different angles.
  • the configuration of the outdoor unit described below is only an example.
  • the outdoor unit according to the present invention is not limited to such a configuration.
  • the same or similar elements are denoted by the same reference signs or denoting such elements with signs is omitted.
  • illustration of detailed structures is simplified or omitted where appropriate.
  • duplicated or similar description is simplified or omitted where appropriate.
  • Embodiment 1 An outdoor unit according to Embodiment 1 is described with reference to Figs. 1 to 13 .
  • Fig. 1 is a perspective view of the outdoor unit according to Embodiment 1.
  • Fig. 2 is a side view of the outdoor unit according to Embodiment 1.
  • Fig. 3 is an exploded perspective view of the outdoor unit according to Embodiment 1.
  • a housing 1 of the outdoor unit is formed of sheet metal and has a substantially rectangular parallelepiped shape.
  • the housing 1 includes a top panel 1a, a front panel 1b, a rear panel 1c, a side panel 1d, and a bottom plate 1e.
  • a grille 2 functioning as an air outlet is attached to the front panel 1b. Furthermore, a service cover 3 that houses terminal blocks and so forth therein is attached to the side panel 1d. A louver 3a through which outside air is introduced into the housing 1 is formed in the service cover 3. Furthermore, a valve cover 4 is attached to a lower portion of the side panel 1d.
  • a wiring opening 1f that allows access to the terminal blocks and so forth disposed inside the outdoor unit is formed in the side panel 1d of the outdoor unit according to Embodiment 1.
  • a first main terminal block 20a and a second main terminal block 20b which are secured to a first terminal block securing plate 21 are visible in the wiring opening 1f in side view of the housing 1. Furthermore, a terminal block opening 21d in which a sub-terminal block 20c is disposed and an air opening 21e through which the outside air having passed through the louver 3a of the service cover 3 passes are formed in the first terminal block securing plate 21.
  • an inner structure of the outdoor unit according to Embodiment 1 is separated by a separator 5 into a fan chamber A and a machine chamber B. Furthermore, components inside the outdoor unit are disposed on the bottom plate 1e having legs.
  • a fan 6, a heat exchanger 7, and so forth are disposed in the fan chamber A. Furthermore, a compressor 8, refrigerant pipes, a controller unit 9, and so forth are disposed in the machine chamber B.
  • Fig. 4 is a perspective view of the controller unit of the outdoor unit according to Embodiment 1.
  • Fig. 5 is a perspective view of the controller unit of the outdoor unit according to Embodiment 1 when seen at a different angle from an angle at which the controller unit is seen in Fig. 4 .
  • Fig. 6 is an exploded perspective view of the controller unit of the outdoor unit according to Embodiment 1.
  • the controller unit 9 of the outdoor unit includes an electrical component support 14 that supports a control board 10 (corresponding to a first control board of the present invention) and the first terminal block securing plate 21 to which the terminal blocks are attached.
  • the controller unit 9 performs computation in accordance with input values from a variety of sensors of a refrigeration cycle apparatus and a variety of setting values to perform capacity control on the compressor 8, fan 6, and so forth.
  • the control board 10 includes circuits such as an inverter circuit.
  • the electrical component support 14 is formed of sheet metal and, as illustrated in Fig. 6 , includes an L-shaped structural surface 14a having a substantially L-shape in section.
  • the electrical component support 14 also includes a bottom plate surface 14b formed on one end side of the L-shaped structural surface 14a.
  • a radiator unit 12 that cools heat generating components of the control board 10 is attached to the electrical component support 14 with a radiator-unit support 13 interposed therebetween.
  • the radiator unit 12 is, for example, a heat sink that includes fins formed of aluminum.
  • a radiator-unit protecting member 15 that protects the radiator unit 12 is attached to the electrical component support 14 from the fan chamber A side to cover the radiator unit 12.
  • the radiator-unit protecting member 15 has a duct shape having a flow path to allow the air that cools the radiator unit 12 to flow therethrough.
  • a first opening 14c having a rectangular shape is formed in the electrical component support 14.
  • the radiator unit 12 is inserted into the first opening 14c.
  • a second opening 14d is formed adjacent to the first opening 14c.
  • the cooling air having cooled the control board 10 flows into the fan chamber A through the second opening 14d.
  • the control board 10 is attached to the electrical component support 14 with a flat-shaped board support member 11 interposed therebetween. At this time, electrical components generating large amount of heat disposed on the control board 10 are thermally coupled to the radiator unit 12.
  • the first terminal block securing plate 21 stands erect on the bottom plate surface 14b of the electrical component support 14.
  • the first main terminal block 20a and the second main terminal block 20b attached to the first terminal block securing plate 21 are connected to the control board 10 through first wiring 16.
  • the terminal block opening 21d in which the sub-terminal block 20c is disposed and the air opening 21e through which the outside air having passed through the louver 3a of the service cover 3 passes are formed in the first terminal block securing plate 21.
  • an extended board support member 32 is disposed beside the first terminal block securing plate 21.
  • the extended board support member 32 supports an extended function control board 31, which will be described later.
  • the outside air having flowed into the housing 1 through the louver 3a of the service cover 3 passes through the air opening 21e of the first terminal block securing plate 21 and cools the control board 10 and the extended function control board 31. After that, this air flows into the fan chamber A through the second opening 14d of the electrical component support 14 and is discharged to the outside of the housing 1 by the fan 6.
  • Fig. 7 is an exploded perspective view of a terminal block securing device of the outdoor unit according to Embodiment 1.
  • Fig. 8 is a perspective view of a second terminal block securing plate of the outdoor unit according to Embodiment 1.
  • Fig. 9 is a front view of the terminal block securing device of the outdoor unit according to Embodiment 1.
  • Fig. 10 is a rear view of the terminal block securing device of the outdoor unit according to Embodiment 1.
  • Fig. 11 is a view of an A-A section of the terminal block securing device of the outdoor unit according to Embodiment 1.
  • a terminal block securing device 100 includes the first terminal block securing plate 21 and a second terminal block securing plate 30 illustrated in Figs. 7 to 11 .
  • the first terminal block securing plate 21 includes a main plate 21a, a first rib 21b formed by being bent from the main plate 21a on one end side of the main plate 21a, and a second rib 21c formed by being bent from the main plate 21a on the other end side of the main plate 21a.
  • the terminal block opening 21d and the air opening 21e that are rectangular through holes are formed in the main plate 21a.
  • the first main terminal block 20a (corresponding to a first terminal block of the present invention) and the second main terminal block 20b (corresponding to a first terminal block of the present invention) are attached to the main plate 21a of the first terminal block securing plate 21 by screws 22 or the like such that the first main terminal block 20a and the second main terminal block 20b are arranged in the horizontal direction.
  • a surface of the main plate 21a where the first main terminal block 20a and the second main terminal block 20b are attached is defined as a front surface 21A (corresponding to a first securing surface of the present invention).
  • a surface of the main plate 21a on the opposite side to the front surface 21A is defined as a rear surface 21 B.
  • the second terminal block securing plate 30 to which the sub-terminal block 20c is secured is secured to the rear surface 21 B of the main plate 21a to cover the terminal block opening 21d of the first terminal block securing plate 21.
  • the following elements are arranged on or in the first terminal block securing plate 21 in the following order from the upper side in the vertical direction: the first main terminal block 20a and the second main terminal block 20b; the terminal block opening 21d; and the air opening 21e.
  • the second terminal block securing plate 30 includes an inclined plate 30a to which the sub-terminal block 20c (corresponding to a second terminal block of the present invention) is secured, substantially triangular support plates 30b formed at both end portions of the inclined plate 30a, and attachment piece portions 30c formed by being bent from the support plates 30b.
  • the inclined plate 30a includes a front surface 30A (corresponding to a second securing surface of the present invention) to which the sub-terminal block 20c is attached and a rear surface 30B being a surface on the opposite side to the front surface 30A.
  • the front surface 30A and the attachment piece portions 30c of the inclined plate 30a are formed to form different angles (for example, 45 degrees).
  • An attachment holes 30e for attachment of the sub-terminal block 20c are formed in bent portions at boundaries between the inclined plate 30a and the support plates 30b.
  • positioning projections 30f are formed at two positions on the inclined plate 30a. The positioning projections 30f facilitate positioning when attaching the sub-terminal block 20c.
  • the attachment piece portions 30c of the second terminal block securing plate 30 are, as illustrated in Fig. 10 , secured to the rear surface 21B of the first terminal block securing plate 21 by, for example, spot welding 30d along two sides the of the terminal block opening 21d facing each other.
  • the front surface 30A of the inclined plate 30a of the second terminal block securing plate 30 is formed at a different angle from an angle of the front surface 21A of the main plate 21a of the first terminal block securing plate 21.
  • the front surface 30A of the inclined plate 30a is inclined relative to the front surface 21A of the main plate 21a by 45 degrees.
  • the inclined plate 30a of the second terminal block securing plate 30 is attached on the rear surface 21B side of the main plate 21a of the first terminal block securing plate 21 such that the inclined plate 30a is inclined relative to the main plate 21a and extends toward a diagonally upper direction.
  • an opening 40 is formed between the inclined plate 30a of the second terminal block securing plate 30 and peripheral portion 21f of the terminal block opening 21d.
  • first main terminal block 20a, the second main terminal block 20b, and the sub-terminal block 20c are attached to such a first terminal block securing plate 21 and a second terminal block securing plate 30
  • first main terminal block 20a and the second main terminal block 20b attached to the front surface 21A of the main plate 21a of the first terminal block securing plate 21 and the sub-terminal block 20c attached to the front surface 30A of the inclined plate 30a of the second terminal block securing plate 30 are attached such that the first main terminal block 20a and the second main terminal block 20b form a different angle (for example, 45 degrees) from the angle of the sub-terminal block 20c.
  • the extended board support member 32 is disposed on the first rib 21b side of the first terminal block securing plate 21.
  • the extended board support member 32 supports the extended function control board 31 (corresponding to a second control board of the present invention).
  • the extended board support member 32 stands erect on the bottom plate surface 14b of the electrical component support 14.
  • the extended function control board 31 is attached to the extended board support member 32 by the screws 22 or the like.
  • the extended function control board 31 and the sub-terminal block 20c are connected to each other through second wiring 33.
  • first terminal block securing plate 21 and the second terminal block securing plate 30 are separate plates secured to each other by spot welding in the above-described structure, as a tongue-shaped portion, the second terminal block securing plate 30 may be cut and raised from the terminal block opening 21d of the first terminal block securing plate 21 so as to have an integral structure with the first terminal block securing plate 21.
  • Each of the first main terminal block 20a, the second main terminal block 20b, and the sub-terminal block 20c includes board connection terminals 20y and external connection portions 20z.
  • Wiring is connected to the control board 10 and the extended function control board 31 through the board connection terminals 20y.
  • Wiring is connected to an external power source and an external device through the external connection portions 20z.
  • the first wiring 16 and the second wiring 33 are connected to the board connection terminals 20y through connectors. Furthermore, power source wiring and external signal wiring are connected to the external connection portions 20z.
  • each terminal block connects a three-phase power source for operation of the outdoor unit from the outside.
  • the second main terminal block 20b connects the outdoor unit and the indoor unit to each other for supplying the power source to the indoor unit and connects signal wiring for control.
  • the sub-terminal block 20c is for connecting external signals of external devices (for example, demand signals of a power usage amount monitoring board or control signals of a home energy management system (HEMS) or the like) as extended functions.
  • HEMS home energy management system
  • Fig. 12 is a perspective view of the second terminal block securing plate of the outdoor unit according to Embodiment 1.
  • Fig. 13 is a sectional view of the second terminal block securing plate of the outdoor unit according to Embodiment 1.
  • the sub-terminal block 20c includes a pair of attachment pieces 20d at both end portions of the sub-terminal block 20c facing each other.
  • Each of the attachment pieces 20d has a U-shaped cut at the center of the attachment piece 20d to allow a screw to secure the attachment piece 20d.
  • one of the attachment pieces 20d is inserted into an attachment hole 30e of the second terminal block securing plate 30.
  • one of a screw 22 is inserted into the U-shaped cut of the other attachment piece 20d to secure the sub-terminal block 20c to the second terminal block securing plate 30 as illustrated in Fig. 12 .
  • a driver pit 50 for rotation of the screw 22 is formed to allow work to be performed with a clearance 50a left from the peripheral portion 21f of the terminal block opening 21d of the first terminal block securing plate 21.
  • angles of the terminal block opening 21d of the first terminal block securing plate 21 and the inclined plate 30a of the second terminal block securing plate 30 are adjusted to reliably obtain visibility of a terminal block identification label 20e pasted on the sub-terminal block 20c when the sub-terminal block 20c has been attached to the second terminal block securing plate 30.
  • peripheral portion 21f of the terminal block opening 21d of the first terminal block securing plate 21 is hemmed or bent to avoid damage to the wiring connected to the sub-terminal block 20c.
  • end portions 30g of the inclined plate 30a of the second terminal block securing plate 30 are also hemmed or bent.
  • the outdoor unit according to Embodiment 1 is as follows.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Other Air-Conditioning Systems (AREA)
EP15902943.8A 2015-08-31 2015-08-31 Outdoor unit Active EP3346199B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/074580 WO2017037820A1 (ja) 2015-08-31 2015-08-31 室外機

Publications (3)

Publication Number Publication Date
EP3346199A1 EP3346199A1 (en) 2018-07-11
EP3346199A4 EP3346199A4 (en) 2019-05-15
EP3346199B1 true EP3346199B1 (en) 2021-06-09

Family

ID=58188849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15902943.8A Active EP3346199B1 (en) 2015-08-31 2015-08-31 Outdoor unit

Country Status (5)

Country Link
EP (1) EP3346199B1 (ja)
JP (1) JP6452829B2 (ja)
CN (1) CN207019198U (ja)
AU (1) AU2015407701B2 (ja)
WO (1) WO2017037820A1 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11306925B2 (en) 2018-04-10 2022-04-19 Mitsubishi Electric Corporation Outdoor unit of air-conditioning apparatus having terminal-block mounting portion with terminal-block seat
WO2020095342A1 (ja) * 2018-11-05 2020-05-14 三菱電機株式会社 空気調和機の室内機
CN217503820U (zh) * 2022-04-18 2022-09-27 广东美的暖通设备有限公司 电控组件、空调外机及空调器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234922U (ja) * 1988-08-25 1990-03-06
JPH03125831A (ja) * 1989-10-09 1991-05-29 Matsushita Electric Ind Co Ltd 空気調和機の電装部品取付装置
JP2007285617A (ja) * 2006-04-18 2007-11-01 Matsushita Electric Ind Co Ltd 空気調和機の室外機
JP4952351B2 (ja) * 2007-04-12 2012-06-13 ダイキン工業株式会社 電子基板及び端子台の取付部材、並びにこれを備えた空気調和機
JP4911119B2 (ja) * 2008-06-02 2012-04-04 株式会社富士通ゼネラル 空気調和機の室外機
IT1400737B1 (it) * 2009-05-20 2013-07-02 Sanyo Electric Co Unita' esterna per lo scambio di calore, particolarmente in scambiatori di calore e simili.
CN203100012U (zh) * 2013-01-04 2013-07-31 广东美的电器股份有限公司 电控盒组件和具有该电控盒组件的空调室外机
CN203837142U (zh) * 2014-02-20 2014-09-17 大金工业株式会社 端子台固定板及空调机室外机

Also Published As

Publication number Publication date
EP3346199A1 (en) 2018-07-11
JP6452829B2 (ja) 2019-01-16
WO2017037820A1 (ja) 2017-03-09
AU2015407701A1 (en) 2018-04-12
AU2015407701B2 (en) 2019-01-17
CN207019198U (zh) 2018-02-16
JPWO2017037820A1 (ja) 2018-04-05
EP3346199A4 (en) 2019-05-15

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