EP4241351A1 - Structure de toit pour une installation électrique - Google Patents

Structure de toit pour une installation électrique

Info

Publication number
EP4241351A1
EP4241351A1 EP21799251.0A EP21799251A EP4241351A1 EP 4241351 A1 EP4241351 A1 EP 4241351A1 EP 21799251 A EP21799251 A EP 21799251A EP 4241351 A1 EP4241351 A1 EP 4241351A1
Authority
EP
European Patent Office
Prior art keywords
roof
hood
base body
wall
frame according
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.)
Pending
Application number
EP21799251.0A
Other languages
German (de)
English (en)
Inventor
Adam ONDRICEK
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.)
ABB Schweiz AG
Original Assignee
ABB Schweiz AG
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 ABB Schweiz AG filed Critical ABB Schweiz AG
Publication of EP4241351A1 publication Critical patent/EP4241351A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56—Cooling; Ventilation
    • H02B1/565—Cooling; Ventilation for cabinets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/305—Cable entries

Definitions

  • the invention relates to a roof surround for arranging on the roof of an electrical system or for arranging on a cover spaced upwards from the installation surface of the electrical system.
  • a disadvantage of known active cooling systems, such as air conditioning, is the high consumption of electrical energy. Furthermore, the known cooling systems can include other components with poor reliability and increase the overall maintenance requirements and maintenance costs.
  • the invention is therefore based on the object of providing an electrical system with a largely closed housing with a cooling device that is as immune to faults and requires little maintenance as possible.
  • the roof surround mentioned at the outset is characterized by a base body for attachment to the roof or the cover, the base body having at least one layer of wire mesh and the base body being provided with a hood which has openings for the passage of air.
  • a purely mechanical device can cause hot air to be discharged through the roof from a largely or completely closed electrical system, in particular from a network distribution system or a low-voltage switchgear. Furthermore, it has been recognized that the device is based on the dissipation of convection heat.
  • IP code or "Ingress Protection Code” is defined according to the IEC standard 60529.
  • the IP code classifies the degree of protection that can be offered by enclosures and in particular electrical switchgear enclosures against access, dust, water and hazardous contact. Furthermore, it has also been recognized that, against this background, naturally ventilating and open devices can offer adequate protection, but require a much larger installation area and therefore lead to systems that take up a lot of space.
  • the roof surround according to the invention is designed with the wire screen and the hood with openings for the passage of air in such a way that there is sufficient access protection through the roof or a cover of a housing of an electrical system that is far above and still a flow of cooling air or the outflow of hot air from the inside.
  • the base body has a base with a central passage surrounded and enclosed by one or more walls, the wall or walls projecting towards the hood.
  • a peripheral wall or walls can create a dome on which the hood can be placed.
  • the walls create a chimney effect that extracts the hot air from the interior of an enclosure, with the central passage of the base being at least partially or substantially aligned with an opening in the roof of the enclosure.
  • At least one wall preferably carries a layer of wire mesh.
  • the wire screen can be made of a metal or a heat-resistant plastic.
  • the base body of the roof edging has the wire screen so that hot air can flow out naturally from the electrical system. The hot air passes through the wire screen and then passes through the openings for the passage of air in the hood and also preferably through gaps between the hood and the base body.
  • At least one wall has a frame which has or surrounds a recess, the layer of wire mesh covering the recess.
  • the recess offers a large cross-sectional area for air to pass through and the weight of the roof frame remains low due to frame-like walls.
  • the base plate advantageously has recesses or holes.
  • the base plate has four corners, in each of which a recess or a hole is formed. So the base body can be easily screwed to a roof of an electrical system.
  • the hood overlaps the wall or walls with a circumferential collar, forming a circumferential double wall, with the openings for the passage of air being formed in the collar.
  • two surfaces formed by the walls ensure better protection against air pollution and the ingress of corrosive substances. The two surfaces also guide the air.
  • At least one opening is advantageously covered by a protuberance or bulge in the collar, which directs the escaping air downwards, namely in the direction of the base plate.
  • the roof surround protects people and devices that are outside the electrical system from unqualified access and from dangerous parts inside the electrical system. Furthermore, the components within the electrical system are protected against the ingress of foreign particles and liquids. Water coming from above, in particular rainwater, can run off on the bulge or bulge in the direction of the roof of the system without penetrating into the openings for the passage of air.
  • the hood has recesses or holes in edge or corner areas that are aligned with recesses or holes in edge or corner areas of the wall or walls. This allows the hood to be screwed to the base body.
  • the hood advantageously has a collar which protrudes from a cover plate of the hood in the direction of the base body, the cover plate being of closed design.
  • the hood on the base body provides adequate protection according to an IP code.
  • the hood also advantageously has a collar that protrudes from a cover plate of the hood in the direction of the base body, the cover plate being provided with passages for cables and/or the cover plate only being provided with passages for cables but not with openings for passage from air.
  • the cover plate of the hood can thus provide space for arranging cables that lead into or out of the electrical system.
  • an electrical system comprises a housing which houses electrical components and has a roof or top cover, and a roof surround of the type described herein which is arranged on the roof or top cover. Access to the interior of the housing and entry of foreign matter can thus be largely prevented with good ventilation.
  • the overall roof of the electrical system can be of relatively small dimensions and provide more space for the extraction or exhaust of hot air without the roof edging exceeding the footprint of the electrical system.
  • the electrical system is preferably designed as a low-voltage switchgear.
  • the roof surround described herein allows for natural ventilation of an electrical system enclosure and does not have pumps or fans.
  • the roof frame is purely mechanical and has no electric motors or the like.
  • FIG. 1 shows a perspective view of an electrical system with a housing on the roof of which a roof frame is arranged, through the hood of which cables are routed,
  • FIG. 2 shows a perspective view of a roof frame of the type shown in FIG. 1, but with a closed cover plate without cable bushings,
  • FIG. 3 is a perspective view of the roof fascia with a base body and a hood removed
  • FIG. 4 is a side sectional view of the roof fascia of Figure 2 showing a plan view of a wire screen.
  • Fig. 1 shows a roof frame T for arrangement on the roof 2 of an electrical system 3.
  • the roof frame 1 has a base body 4 for attachment to the roof 2, the base body 4 having at least one layer of wire mesh 5 and the base body 4 is provided with a hood 6 which has openings 7 for the passage of air.
  • the hot air that flows through the wire screen 5 can flow out through the openings 7 for the passage of air into the atmosphere.
  • the electrical system 3 comprises a housing 8, which accommodates electrical components (not shown) and has a roof 2, and the roof frame 1', which is arranged on the roof 2.
  • the electrical system 3 is designed as a low-voltage switchgear and has a base area 9 over which the roof frame T does not protrude.
  • the hood 6 of the roof frame T has a collar 10 which protrudes from a cover plate 11 in the direction of the base body 4, the cover plate 11 being provided with passages for cables 12.
  • FIG. 2 shows a further roof surround 1, in which the hood 6 has a collar 10 which protrudes from a cover plate 11 in the direction of the base body 4, the cover plate 11 being closed in its center. No cables pass through the cover plate 11.
  • FIG. 3 shows that the base body 4 of the roof surround 1, 1' has a base plate 13 with a rectangular or square central passage 14 surrounded and enclosed by four walls 15, which walls 15 protrude towards the hood 6.
  • Each wall 15 supports a layer of wire mesh 5.
  • Each wall 15 has a frame 16 which includes and surrounds a recess 17, the layer of wire mesh 5 covering the recess 17.
  • the base plate 13 has four corners, in each of which a hole 18 is formed.
  • the hood 6 overlaps all of the walls 15 with a peripheral collar 10 to form a peripheral double wall, with the openings 7 being formed in the collar 10 for the passage of air.
  • the hood 6 also has recesses 19 in edge or corner areas which are aligned with recesses 19 in edge or corner areas of the walls 15 .
  • FIG. 4 shows, in a sectional view through the roof frame 1 according to FIG.
  • the sectional drawing shows that three rows of bulges 20 are arranged one above the other.
  • Each bulge 20 is designed in the manner of a canopy, on which water coming from above can run off without penetrating an opening 7 for the passage of air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Patch Boards (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

L'invention concerne une structure de toit (1, 1') destinée à être disposée sur le toit d'une installation électrique ou destinée à être disposée sur un couvercle qui est espacé vers le haut de la surface de support de l'installation électrique. L'objectif de la présente invention est de mettre au point une installation électrique comprenant un boîtier qui est en grande partie étanche et qui présente un dispositif de refroidissement qui, autant que possible, demande une maintenance faible et n'est pas sujet au malfonctionnement, la structure de toit est caractérisée par un corps principal (4) destiné à être fixé sur le toit ou le couvercle, le corps principal (4) présentant au moins une couche en treillis métallique (5) et le corps principal (4) étant pourvu d'un capot (6) qui présente des ouvertures (7) pour le passage de l'air.
EP21799251.0A 2020-11-03 2021-10-25 Structure de toit pour une installation électrique Pending EP4241351A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202020106285.9U DE202020106285U1 (de) 2020-11-03 2020-11-03 Dacheinfassung für eine elektrische Anlage
PCT/EP2021/079493 WO2022096301A1 (fr) 2020-11-03 2021-10-25 Structure de toit pour une installation électrique

Publications (1)

Publication Number Publication Date
EP4241351A1 true EP4241351A1 (fr) 2023-09-13

Family

ID=73654004

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21799251.0A Pending EP4241351A1 (fr) 2020-11-03 2021-10-25 Structure de toit pour une installation électrique

Country Status (4)

Country Link
EP (1) EP4241351A1 (fr)
CN (1) CN116458023A (fr)
DE (1) DE202020106285U1 (fr)
WO (1) WO2022096301A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5441946Y2 (fr) * 1974-01-28 1979-12-07
CN104270915A (zh) * 2014-10-23 2015-01-07 北京新利同创电子设备有限责任公司 一种防雨电控制柜
CN108233222A (zh) * 2016-12-10 2018-06-29 镇江凯勒电力科技有限公司 一种开关柜顶板结构
US10362698B2 (en) * 2017-01-20 2019-07-23 Yaskawa America, Inc. Method and system for environmental sealing of electrical enclosures
CN208955438U (zh) * 2018-10-11 2019-06-07 波瑞电气有限公司 一种具有散热防尘功能的出线柜

Also Published As

Publication number Publication date
CN116458023A (zh) 2023-07-18
DE202020106285U1 (de) 2020-11-18
WO2022096301A1 (fr) 2022-05-12

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