WO2008047815A1 - Climatiseur avec unité d'environnement extérieur avec espaceur fermé imperméable aux insectes entre un tableau de connexion imprimé et un module électrique - Google Patents

Climatiseur avec unité d'environnement extérieur avec espaceur fermé imperméable aux insectes entre un tableau de connexion imprimé et un module électrique Download PDF

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Publication number
WO2008047815A1
WO2008047815A1 PCT/JP2007/070216 JP2007070216W WO2008047815A1 WO 2008047815 A1 WO2008047815 A1 WO 2008047815A1 JP 2007070216 W JP2007070216 W JP 2007070216W WO 2008047815 A1 WO2008047815 A1 WO 2008047815A1
Authority
WO
WIPO (PCT)
Prior art keywords
wiring board
printed wiring
module
fixing spacer
outdoor unit
Prior art date
Application number
PCT/JP2007/070216
Other languages
English (en)
Inventor
Seiji Fukui
Masanori Kawanishi
Yuji Tani
Original Assignee
Panasonic Corporation
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 Panasonic Corporation filed Critical Panasonic Corporation
Publication of WO2008047815A1 publication Critical patent/WO2008047815A1/fr

Links

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
    • F24F1/24—Cooling of electric components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/301—Assembling printed circuits with electric components, e.g. with resistor by means of a mounting structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/141—One or more single auxiliary printed circuits mounted on a main printed circuit, e.g. modules, adapters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10409—Screws
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
    • H05K2201/2018—Presence of a frame in a printed circuit or printed circuit assembly
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
    • H05K2201/2036—Permanent spacer or stand-off in a printed circuit or printed circuit assembly

Definitions

  • the present invention relates to an air conditioner provided with an outdoor unit having a power circuit that includes a printed wiring board, a module mounted on the printed wiring board, and a fixing spacer for fixing the module to the printed wiring board.
  • a conventional air conditioner is provided with an outdoor unit having a power circuit.
  • the power circuit includes a printed wiring board and a module mounted on the printed wiring board in spaced relation to each other.
  • a fixing spacer is placed therebetween to fix the module to the printed wiring board by means of screws (see Patent document
  • Fig. 3A depicts such a power circuit mounted in the outdoor unit of the conventional air conditioner as disclosed in Patent document 1
  • Fig. 3B depicts a fixing spacer mounted in the power circuit.
  • the power circuit includes a printed wiring board 100, a module 300 mounted on the printed wiring board 100 via a fixing spacer 400, and a radiating plate 200 mounted on the module 300.
  • the printed wiring board 100, the module 300, and the fixing spacer 400 have respective through-holes defined therein, while the radiating plate 200 has tapped holes defined therein, so that all of them may be connected together by means of screws 500.
  • Patent document 1 Japanese Laid-Open Patent Publication No. 2002-111250
  • the present invention has been developed to overcome the above-described disadvantages.
  • the air conditioner according to the present invention is provided with an outdoor unit having a power circuit, the power circuit including a printed wiring board, a module mounted on the printed wiring board and having a plurality of lead portions, a fixing spacer interposed between the printed wiring board and the module to fix the module to the printed wiring board, and a radiating member mounted on the module for radiating heat emitted from the module, wherein the plurality of lead portions of the module are all encircled with the fixing spacer.
  • the fixing spacer has a plurality of continuous side walls with which the plurality of lead portions of the module are all encircled.
  • the power circuit further includes a plurality of screws, wherein each of the printed wiring board, the fixing spacer, and the module has a plurality of through-holes defined therein for insertion of the plurality of screws, respectively, and the plurality of screws are screwed into the radiating member.
  • the fixing spacer has a plurality of hooks unitarily formed therewith, and the printed wiring board has a plurality of holes defined therein, with each of which one of the plurality of hooks engages to temporarily fix the fixing spacer to the printed wiring board.
  • the fixing spacer acts to prevent insects from approaching the lead portions of the module that extend between the printed wiring board and the module, thereby preventing short-circuit between the lead portions.
  • the use of the fixing spacer of the above-described construction can dispense with any coating material, making it possible to reduce costs or the production time.
  • Fig. 1 is a perspective view of an outdoor unit of an air conditioner according to the present invention
  • Fig. 2A is a side view of a power circuit mounted on the outdoor unit of Fig. 1 ;
  • Fig. 2B is a top plan view of a fixing spacer mounted in the power circuit of Fig. 2A;
  • Fig. 2C is a side view, partly in section, of the fixing spacer of Fig. 2B;
  • Fig. 3A is a side view of a power circuit mounted on an outdoor unit of a conventional air conditioner;
  • Fig. 3B is a top plan view of a fixing spacer mounted in the power circuit of Fig. 3A. Detailed Description of the Preferred Embodiment
  • Fig. 1 depicts an outdoor unit of an air conditioner according to the present invention.
  • the outdoor unit includes a unit body 10, a top plate 11 secured to a top surface of the unit body 10, an outdoor fan 12 accommodated in the unit body 10, and a compressor 13 accommodated in the unit body 10.
  • a power circuit C such as, for example, an inverter circuit, a power supply circuit, or the like is mounted on the top surface of the unit body 10 and covered with the top plate 11.
  • the power circuit C includes a printed wiring board 1 , a module (an assembly of electrical component parts) 2 mounted on a lower surface of the printed wiring board 1 via a fixing spacer 4, and a radiating plate (radiating member) 3 mounted on the module 2 and made of a metal for radiating heat emitted from the module 2.
  • Fig. 2B is a top plan view of the fixing spacer 4
  • Fig. 2C is a side view, partly in section, of the fixing spacer 4.
  • the fixing spacer 4 interposed between the printed wiring board 1 and the module 2 has a generally rectangular spacer frame 6 having four continuous side walls of a substantially identical thickness.
  • the four side walls are made up of two opposing long side walls 6a and two opposing short side walls 6b.
  • the spacer frame 6 also has a bottom wall 6c unitarily formed with the four side walls 6a, 6b.
  • the bottom wall 6c has a rectangular opening 6d defined therein.
  • the fixing spacer 4 also has two supports 5 each unitarily formed with one of the two short side walls 6b so as to protrude inwardly therefrom.
  • Each support 5 has a hook 5a unitarily formed therewith so as to extend upwardly therefrom for engagement with a corresponding hole in the printed wiring board 1.
  • Each support 5 also has a through-hole 5b defined therein at a location adjacent to and inwardly of the hook 5a for insertion of a screw 9 thereinto.
  • the module 2 has a plurality of lead portions 7 encircled with the side walls 6a, 6b of the fixing spacer 4 and extending through the rectangular opening 6d in the bottom wall 6c of the fixing spacer 4.
  • the module 2 also has two through-holes 2a defined therein for insertion of the screw 9 into each of them.
  • the printed wiring board 1 similarly has two through-holes (not shown) defined therein for insertion of the screw 9 into each of them, while the radiating plate 3 has two tapped holes (not shown) defined therein.
  • the lead portions 7, a circuit pattern formed on an upper surface of the printed wiring board 1 , and the like are coated with a coating material 8.
  • the hooks 5a of the fixing spacer 4 are first inserted into and engaged with the corresponding holes in the printed wiring board 1 , thereby temporarily fixing the fixing spacer 4 to the printed wiring board 1.
  • the module 2 and the radiating plate 3 are then aligned with the fixing spacer 4 temporarily fixed to the printed wiring board 1 , and the screw 9 is inserted into the mutually aligned through-holes 4a, 2a in the printed wiring board 1 , the fixing spacer 4, and the module 2, and is finally screwed into each of the two tapped holes in the radiating plate 3, thereby connecting the printed wiring board 1 , the fixing spacer 4, the module 2, and the radiating plate 3 together.
  • a closed chamber is formed in the fixing spacer 4 between the printed wiring board 1 and the module 2. Accordingly, those portions of the lead portions 7 of the module 2 that extend between the printed wiring board 1 and the module 2 are all accommodated in such a closed chamber in the fixing spacer 4 and, hence, the spacer frame 6 prevents insects from approaching the lead portions 7. That is, the power circuit C does not have any apertures that allow insects to intrude therein.
  • insects can easily intrude in the outdoor unit through a clearance between the unit body 10 and the top plate 11 or through openings defined in a front wall of the outdoor unit in front of the outdoor fan 12. If such insects reach the printed wiring board 1 , they tend to gather on a self-heating component part such as, for example, the module 2 or on the radiating plate 3 that radiates heat emitted from the module 2. Although the insects have hitherto intruded between the lead portions 7 of the module 2, the frame 6 of the fixing spacer 4 tightly closes an aperture between the printed wiring board 1 and the radiating plate 3 and, hence, prevents intrusion of the insects, making it possible to avoid short-circuit that has been hitherto caused by the insects. Further, because the solder side (upper surface side) of the printed wiring board 1 is coated with the coating material 8, short-circuit between the lead portions 7 of the module 2 on this side is also avoided. Industrial Applicability
  • the fixing spacer as employed therein can be applied to any other electronic equipment having a printed wiring board irrespective of the configuration of the printed wiring board.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

La présente invention concerne un climatiseur pourvu d'une unité d'environnement extérieur comprenant un circuit de puissance. Le circuit de puissance comprend un tableau de connexion imprimé, un module qui est monté sur le tableau de connexion imprimé et possède une pluralité de parties de fil de sortie, un espaceur de fixation interposé entre le tableau de connexion imprimé et le module pour fixer le module au tableau de connexion imprimé, et un élément de rayonnement monté sur le module pour faire rayonner la chaleur émise à partir du module. La pluralité de parties de fil de sortie du module sont toutes encerclées avec l'espaceur de fixation, empêchant ainsi les insectes d'entrer dans un espace entre le tableau de connexion imprimé et le module.
PCT/JP2007/070216 2006-10-16 2007-10-10 Climatiseur avec unité d'environnement extérieur avec espaceur fermé imperméable aux insectes entre un tableau de connexion imprimé et un module électrique WO2008047815A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-281094 2006-10-16
JP2006281094A JP2009243696A (ja) 2006-10-16 2006-10-16 空気調和機

Publications (1)

Publication Number Publication Date
WO2008047815A1 true WO2008047815A1 (fr) 2008-04-24

Family

ID=38800790

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/070216 WO2008047815A1 (fr) 2006-10-16 2007-10-10 Climatiseur avec unité d'environnement extérieur avec espaceur fermé imperméable aux insectes entre un tableau de connexion imprimé et un module électrique

Country Status (2)

Country Link
JP (1) JP2009243696A (fr)
WO (1) WO2008047815A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104254738A (zh) * 2012-04-27 2014-12-31 大金工业株式会社 制冷装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020100195A1 (fr) * 2018-11-12 2020-05-22 三菱電機株式会社 Carte de commande, et unité extérieure pour climatiseur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08274443A (ja) * 1995-03-29 1996-10-18 Matsushita Electric Works Ltd リードピン付電子部品の実装構造
JP2002111250A (ja) * 2000-09-29 2002-04-12 Matsushita Electric Ind Co Ltd 固定スペーサとその固定スペーサを用いた空気調和機
JP2003133681A (ja) * 2001-10-22 2003-05-09 Fujitsu Access Ltd 半導体装置取付具および半導体装置取付構造
US20040040327A1 (en) * 2001-07-09 2004-03-04 Masakazu Iida Power module and air conditioner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08274443A (ja) * 1995-03-29 1996-10-18 Matsushita Electric Works Ltd リードピン付電子部品の実装構造
JP2002111250A (ja) * 2000-09-29 2002-04-12 Matsushita Electric Ind Co Ltd 固定スペーサとその固定スペーサを用いた空気調和機
US20040040327A1 (en) * 2001-07-09 2004-03-04 Masakazu Iida Power module and air conditioner
JP2003133681A (ja) * 2001-10-22 2003-05-09 Fujitsu Access Ltd 半導体装置取付具および半導体装置取付構造

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104254738A (zh) * 2012-04-27 2014-12-31 大金工业株式会社 制冷装置

Also Published As

Publication number Publication date
JP2009243696A (ja) 2009-10-22

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