EP2565544B1 - Climatiseur - Google Patents

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Publication number
EP2565544B1
EP2565544B1 EP12157833.0A EP12157833A EP2565544B1 EP 2565544 B1 EP2565544 B1 EP 2565544B1 EP 12157833 A EP12157833 A EP 12157833A EP 2565544 B1 EP2565544 B1 EP 2565544B1
Authority
EP
European Patent Office
Prior art keywords
cover
base
air conditioner
unit
electrical unit
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
EP12157833.0A
Other languages
German (de)
English (en)
Other versions
EP2565544A2 (fr
EP2565544A3 (fr
Inventor
Yoshiaki Matsubara
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.)
Panasonic Corp
Original Assignee
Panasonic Corp
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Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Publication of EP2565544A2 publication Critical patent/EP2565544A2/fr
Publication of EP2565544A3 publication Critical patent/EP2565544A3/fr
Application granted granted Critical
Publication of EP2565544B1 publication Critical patent/EP2565544B1/fr
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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0087—Indoor units, e.g. fan coil units with humidification means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F24F2013/207—Casings or covers with control knobs; Mounting controlling members or control units therein

Definitions

  • the present invention relates to an arrangement of an electrical unit mounted in an indoor unit of an air conditioner.
  • a conventional air conditioner includes an electrical unit accommodating electrical components therein and disposed on a front side of an indoor unit to increase the width of an indoor heat exchanger to thereby increase the amount of heat exchange (see, for example, Patent Document 1).
  • Patent Document 1 Japanese Laid-Open Patent Publication No. 8-110085 EP2325572 discloses a n air conditioner upon which the preamble of appending claim 1 is based.
  • the present invention has been developed to overcome the above-described disadvantage.
  • the air conditioner according to the present invention includes an indoor unit, an indoor heat exchanger placed in the indoor unit and an electrical unit, wherein the electrical unit includes a base, a substrate mounted on the base and having electrical components placed thereon, and a cover for covering the base.
  • the base has a groove portion defined therein so as to extend along an outer periphery thereof, the cover has a protrusion formed therewith so as to be fitted into the groove portion, and the electrical unit is placed in the indoor unit at a location delimited by a front face of the indoor heat exchanger, an upper suction opening, and a front suction opening.
  • the air conditioner according to the present invention is effective in restraining impurities from entering the electrical unit.
  • An air conditioner includes an indoor unit and an electrical unit accommodated in the indoor unit on a front side thereof, wherein the electrical unit includes a base, a substrate mounted on the base and having electrical components placed thereon, and a cover for covering the base.
  • the base has a groove portion defined therein so as to extend along an outer periphery thereof, and the cover has a protrusion formed therewith so as to be fitted into the groove portion.
  • a flame-retardant member is interposed between the base and the cover to enhance safety.
  • the flame-retardant member be flexible to enhance the sealing performance between the base and the cover.
  • the base includes an inner side wall and an outer side wall confronting each other, and the groove portion is formed therebetween, the inner side wall being higher than the outer side wall. This configuration further prevents impurities from entering the electrical unit.
  • a sheet-metal cover for covering the cover be provided to prevent fire from spreading outside, thereby enhancing safety.
  • An outer surface of the sheet-metal cover is preferably coated or painted to restrain a user from being injured by edges or burrs of the sheet-metal during maintenance, thus further enhancing safety.
  • the cover preferably has a groove portion defined therein, in which an end portion of the sheet-metal cover is inserted.
  • the groove portion acts to cover or conceal the edges of the sheet-metal cover, thereby further enhancing safety.
  • Fig. 1 is a perspective view of an indoor unit of an air conditioner embodying the present invention.
  • Fig. 2A is a front view of the indoor unit with a front panel installed
  • Fig. 2B is a front view of the indoor unit with the front panel removed.
  • Fig. 3A is a cross-sectional view taken along line A-A in Fig. 2A when the indoor unit is not in operation
  • Fig. 3B is a cross-sectional view taken along line A-A in Fig. 2A when the indoor unit is in operation.
  • the air conditioner in this embodiment includes an indoor unit 1 to be installed in a room and an outdoor unit (not shown) to be installed outside the room, both connected to each other via refrigerant piping and electric wires.
  • FIG. 1 A construction of the indoor unit 1 is explained hereinafter with reference to Fig. 1, Figs. 2A and 2B , and Figs. 3A and 3B .
  • the indoor unit 1 in this embodiment has an upper suction opening 2a defined in an upper wall thereof, through which indoor air is sucked from above, and a front suction opening 2b defined in a front wall thereof through which indoor air is sucked from front.
  • the indoor unit 1 includes a front panel 2 for covering the front suction opening 2b from front. When the indoor unit 1 is brought into operation, the front panel 2 moves forward to open the front suction opening 2b, thereby increasing the amount of air sucked through the front suction opening 2b.
  • the indoor unit 1 has a discharge opening 3 defined therein to blow out into a room air that has been sucked into the indoor unit 1.
  • the indoor unit 1 also includes a plurality of vertical wind direction changing blades 3a and a plurality of horizontal wind direction changing blades 3 disposed in proximity to the discharge opening 3 to vertically and horizontally change the direction of air blown out through the discharge opening 3, respectively.
  • the indoor unit 1 accommodates therein an indoor heat exchanger 5 generally in the form of an inverted V, an indoor fan 6 for conveying air sucked into the indoor unit 1 toward a room through the discharge opening 3, and an air filter 7 for collecting dust.
  • the air filter 7 is held by a filter frame 7a, on which an automatic cleaning device for automatically cleaning the air filter 7 is mounted. Detailed explanation of the automatic cleaning device is omitted.
  • Operation of the indoor fan 6 generates an air current, which in turn causes indoor air to be sucked into the indoor unit 1 through the upper suction opening 2a and the front suction opening 2b.
  • the air sucked into the indoor unit 1 is heat exchanged with a refrigerant in the indoor heat exchanger 5 so that cold or warm air may be introduced into a room during cooling or heating.
  • an electrical unit 8 is disposed at a location delimited by the upper suction opening 2a, the front suction opening 2b, and a front face of the indoor heat exchanger 5.
  • This arrangement of the electrical unit 8 can make effective use of a dead space delimited by the upper suction opening 2a, the front suction opening 2b, and the front face of the indoor heat exchanger 5. Accordingly, it is not necessary to arrange the electrical unit 8 lateral to the indoor heat exchanger 5 and, hence, the width of the indoor heat exchanger 5 can be increased, thus making it possible to enhance the heat exchanging performance of the indoor heat exchanger 5.
  • the electrical unit 8 includes a substrate, on which electrical components are placed, and accordingly generates heat, but the electrical unit 8 is cooled by a wind (indoor air) sucked through the upper suction opening 2a and front suction opening 2b. Further, because the electrical unit 8 is disposed above the indoor heat exchanger 5, drainage water generated in the indoor heat exchanger 5 is prevented from dripping on the electrical unit 8, thus making it possible to enhance the reliability.
  • FIG. 4 is a perspective view of the electrical unit 8
  • Fig. 5 is an exploded perspective view of the electrical unit 8.
  • Fig. 6 is an exploded perspective view depicting a positional relationship between the electrical unit 8 and the filter frame 7a.
  • the electrical unit 8 includes a support plate 8a made by sheet-metal processing, a base 8b made of a flame-retardant resin, a substrate 8c on which electrical components are placed, a cover 8d made of a flame-retardant resin, and a metal cover 8e made by sheet-metal processing.
  • An ABS resin and the like can be used for the flame-retardant resin to form the base 8b and the cover 8d.
  • a terminal block 8f is separately disposed lateral to the electrical unit 8 and connected to electric wires that connect the electrical components on the substrate 8c and those accommodated in an outdoor unit (not shown).
  • a connecting portion to which the electric wires are connected is positioned at the front to allow wiring or other work from a front side.
  • the support plate 8a is disposed to support respective ends of the filter frame 7a. Because the support plate 8a is made by sheet-metal processing, it can prevent deformation of the electrical unit 8 that may be caused by an external force, for example, during transportation. Also, even if a worker applies an external force to the electrical unit 8 during maintenance, the shape of the support plate 8a acts to restrain a reduction in the distance between the electrical unit 8 and the filter frame 7a, thereby ensuring a predetermined amount of air to be sucked into the indoor unit 1. It is to be noted that the filter frame 7a and the support plate 8a may be connected to each other by screws or engaged with each other.
  • the support plate 8a extends over an entire width (longitudinal direction) of the filter frame 7a.
  • the substrate 8c is placed on a right side of the support plate 8a, and an opening or wind way 8g is formed on a left side of the support plate 8a so as not to impede an air current.
  • the opening 8g acts to reduce a resistance to draft.
  • the arrangement (positional relationship) of the substrate 8c and the opening 8g is not particularly limited, and it may be reversed horizontally or vertically.
  • Fig. 7 is a cross-sectional view taken along line B-B in Fig. 4 depicting the electrical unit 8
  • Fig. 8 is an enlarged cross-sectional view of a mating portion between the base 8b and the cover 8d.
  • the base 8b has a groove portion (groove configuration) 9 defined therein so as to extend along an outer periphery (circumference) thereof. That is, the base 8b has an inner side wall 9a and an outer side wall 9b along the outer periphery thereof so as to confront each other, and the groove portion 9 is formed between the inner side wall 9a and the outer side wall 9b.
  • the cover 8d has a protrusion 10 formed therewith at a location confronting the groove portion 9.
  • the cover 8d is mounted to the base 8b by fitting the protrusion (protruding portion) 10 into the groove portion 9.
  • a flame-retardant member 12 is interposed between the inner side wall 9a of the base 8b and a portion of the cover 8d confronting the inner side wall 9a to enhance safety.
  • the groove portion 9 and the protrusion 10 be engaged with each other without any gap therebetween. It is, however, difficult to eliminate a gap 11 due to, for example, manufacturing errors.
  • the flame-retardant member 12 be a flexible or elastic member such as, for example, an EPT sealing material.
  • the groove portion 9 is formed between the inner side wall 9a and the outer side wall 9b, and a height H1 of the inner side wall 9a is higher than a height H2 of the outer side wall 9b.
  • the sheet-metal cover 8e is mounted on the cover 8d to further restrain fire, which may occur inside the electrical unit 8, from spreading outside.
  • an outer surface of the sheet-metal cover 8e is coated or painted to thereby restrain a user from being injured by edges or burrs of the sheet-metal during maintenance.
  • both the cover 8d and the sheet-metal cover 8e are formed along the upper suction opening 2a and the front suction opening 2b and, in particular, both the cover 8d and the sheet-metal cover 8e are generally formed into a trapezoidal shape. This shape allows the electrical unit 8 to be accommodated in a generally triangular dead space that is formed by the upper suction opening 2a, the front suction opening 2b, and the front face of the indoor heat exchanger 5.
  • Fig. 9A is an enlarged perspective view of a portion C encircled by a dotted line in Fig. 4
  • Fig. 9B is a front view of the portion C as viewed from a direction of D in Fig. 9A .
  • the cover 8d has a groove portion 13 defined therein, in which an end portion of the sheet-metal cover 8e is inserted for fixation of the sheet-metal cover 8e on the cover 8d.
  • the groove portion 13 accommodates or covers edges of the sheet-metal cover 8e, thus enhancing safety during maintenance.
  • Fig. 10 is a perspective view of the base 8b and the cover 8d installed.
  • the cover 8d is mounted to the base 8b so as to be rotatable about a plurality of connections 14 to open upward. That is, the electrical unit 8 is provided with the plurality of connections 14 on an upper side thereof.
  • the cover 8d has a protrusion 15 formed therewith or otherwise rigidly secured thereto, and the base 8b has a catch 16 similarly formed therewith or otherwise rigidly secured thereto. Engagement of the protrusion 15 of the cover 8d with the catch 16 of the base 8b prevents rotation of the cover 8d to thereby hold the cover 8d in a closed position.
  • cover 8d and the base 8d may be so designed that the former has a catch and the latter has a protrusion
  • the construction as described in this embodiment allows easy removal of the protrusion 15 from the catch 16 and subsequent rotation of the cover 8d toward an open direction by merely applying a force to the cover 8d in the open direction, thus enhancing the workability.
  • the cover 8d can be opened by rotating the cover 8d upward about the plurality of connections 14, the interior of the electrical unit 8 accommodated in the indoor unit 1, which is normally installed high in a room, can be confirmed from below during maintenance, thus making it possible to enhance the workability during maintenance.
  • Fig. 11A is an exploded perspective view of one of the plurality of connections 14, and Fig. 11B is a perspective view of the connection of Fig. 11A after assemblage.
  • Maintenance work for the electrical unit 8 includes replacement of the substrate 8c and, hence, a construction of the electrical unit 8 that allows easy replacement of the substrate 8c can enhance the working efficiency.
  • each connection 14 is configured to allow rotation of the cover 8d.
  • each connection 14 includes a shaft hole 17 formed in the base 8b and a rotary shaft 18 mounted to the cover 8d.
  • the rotary shaft 18 is provided with a stopper 19 to avoid removal of the rotary shaft 18 from the shaft hole 17.
  • the rotary shaft 18 has a groove (not shown) defined therein, in which the stopper 19 is received.
  • the stopper 19 is generally formed into a C and accordingly has an opening for insertion of the rotary shaft 18, thus resulting in easy attachment of the stopper 19 to the rotary shaft 18.
  • Fig. 12A is a front view of the stopper 19, and as shown therein, the stopper 19 has two recesses defined therein at an inner periphery thereof. That is, the stopper 19 has two narrowed portions 20 each having a width L (distance between an inner peripheral edge and an outer peripheral edge) shorter than that of other portions.
  • Fig. 12A depicts the stopper 19 having the two narrowed portions 20, but the present invention is not limited thereto.
  • the stopper 19 may have only one narrowed portion 20 as shown in Fig. 12B or three or more narrowed portions.
  • all the rotary shafts 18 are inserted into respective shaft holes 17 from the same direction to thereby enhance the workability during maintenance.
  • the arrangement of the electrical unit 8 on a front side of the indoor unit 1 can increase the width (longitudinal length) of the indoor heat exchanger 5 to enhance the heat exchanging performance. Also, because the electrical unit 8 is positioned on a wind way or air-conveying path, the cooling effect on the electrical unit 8 can be enhanced. Further, because the flame-retardant member 12 acts to prevent foreign substances such as dust or dirt from entering the electrical unit 8, the air conditioner is highly reliable.
  • the present invention is applicable not only to an air conditioner in which an indoor unit is connected to an outdoor unit, but also to a multi-air conditioner in which a plurality of indoor units are connected to an outdoor unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Casings For Electric Apparatus (AREA)

Claims (7)

  1. Climatiseur comprenant une unité intérieure (1), un échangeur de chaleur intérieur (5) placé dans l'unité intérieure (1), et une unité électrique (8), dans lequel l'unité électrique (8) comprend une base (8b), un substrat (8c) monté sur la base (8b) et sur lequel sont placés des composants électriques, et un couvercle (8d) destiné à recouvrir la base (8b),
    dans lequel la base (8b) possède une partie de rainure (9) définie en son sein de façon à s'étendre le long d'une périphérie externe de celle-ci,
    le couvercle (8d) possède une saillie (10) formée avec celui-ci de façon à être ajusté dans la partie de rainure (9), et
    caractérisé en ce
    que l'unité électrique (8) est placée dans l'unité intérieure (1) à un emplacement délimité par une face avant de l'échangeur de chaleur intérieur (5), une ouverture d'aspiration supérieure (2a) et une ouverture d'aspiration avant (2b).
  2. Climatiseur selon la revendication 1, comprenant en outre un élément ignifuge (12) interposé entre la base (8b) et le couvercle (8d).
  3. Climatiseur selon la revendication 2, dans lequel l'élément ignifuge (12) est flexible.
  4. Climatiseur selon l'une quelconque des revendications 1 à 3, dans lequel la base (8b) comprend une paroi latérale interne (9a) et une paroi latérale externe (9b) se faisant face, et la partie de rainure (9) est formée entre celles-ci, la paroi latérale interne (9a) étant plus haute que la paroi latérale externe (9b).
  5. Climatiseur selon l'une quelconque des revendications 1 à 4, comprenant en outre un couvercle en tôle (8e) destiné à recouvrir le couvercle (8d).
  6. Climatiseur selon la revendication 5, dans lequel une surface extérieure du couvercle en tôle (8e) est revêtue ou peinte.
  7. Climatiseur selon la revendication 5 ou 6, dans lequel le couvercle (8d) possède une partie de rainure (9) définie en son sein, dans laquelle une partie d'extrémité du couvercle en tôle (8e) est insérée.
EP12157833.0A 2011-09-05 2012-03-02 Climatiseur Active EP2565544B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011192676A JP2013053820A (ja) 2011-09-05 2011-09-05 空気調和機

Publications (3)

Publication Number Publication Date
EP2565544A2 EP2565544A2 (fr) 2013-03-06
EP2565544A3 EP2565544A3 (fr) 2015-01-07
EP2565544B1 true EP2565544B1 (fr) 2018-11-14

Family

ID=45808233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12157833.0A Active EP2565544B1 (fr) 2011-09-05 2012-03-02 Climatiseur

Country Status (3)

Country Link
EP (1) EP2565544B1 (fr)
JP (1) JP2013053820A (fr)
CN (1) CN102980246A (fr)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0440111Y2 (fr) * 1986-07-17 1992-09-21
JPH08110085A (ja) 1994-10-14 1996-04-30 Hitachi Ltd 室内ユニット
JPH0964562A (ja) * 1995-08-30 1997-03-07 Yamatake Honeywell Co Ltd 電気機器取付用ブラケット
JPH10132326A (ja) * 1996-10-25 1998-05-22 Sanyo Electric Co Ltd 空気調和機
JP3423190B2 (ja) * 1997-06-05 2003-07-07 三洋電機株式会社 空気調和機
JPH11159800A (ja) * 1997-11-28 1999-06-15 Matsushita Electric Ind Co Ltd 空気調和機の電装品収納箱
JP3259719B2 (ja) * 1999-08-31 2002-02-25 ダイキン工業株式会社 空気調和機
JP2002206770A (ja) * 2002-01-15 2002-07-26 Daikin Ind Ltd 空気調和機
JP3730604B2 (ja) * 2002-08-01 2006-01-05 三菱電機株式会社 空気調和装置の室内ユニット
CN1755213A (zh) * 2004-09-30 2006-04-05 乐金电子(天津)电器有限公司 空调的室内机
CN1987237A (zh) * 2005-12-22 2007-06-27 乐金电子(天津)电器有限公司 空气调节器室内机的控制盒
JP5084813B2 (ja) * 2009-11-18 2012-11-28 三菱電機株式会社 空気調和機
JP2013124804A (ja) * 2011-12-14 2013-06-24 Panasonic Corp 空気調和機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2565544A2 (fr) 2013-03-06
EP2565544A3 (fr) 2015-01-07
CN102980246A (zh) 2013-03-20
JP2013053820A (ja) 2013-03-21

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