EP3029392A1 - Stabilisierungs- und Dichtungsanordnung - Google Patents

Stabilisierungs- und Dichtungsanordnung Download PDF

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Publication number
EP3029392A1
EP3029392A1 EP14196052.6A EP14196052A EP3029392A1 EP 3029392 A1 EP3029392 A1 EP 3029392A1 EP 14196052 A EP14196052 A EP 14196052A EP 3029392 A1 EP3029392 A1 EP 3029392A1
Authority
EP
European Patent Office
Prior art keywords
support plate
seal
panel
hatch
housing
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.)
Granted
Application number
EP14196052.6A
Other languages
English (en)
French (fr)
Other versions
EP3029392B1 (de
Inventor
Tobias SAGSTRÖM
Ann-Sofie Andersson
Marko Piispanen
Tomas Baltzer
Stephen Lilley
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.)
Flaekt Woods AB
Original Assignee
Flaekt Woods AB
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 Flaekt Woods AB filed Critical Flaekt Woods AB
Priority to EP14196052.6A priority Critical patent/EP3029392B1/de
Priority to LTEP14196052.6T priority patent/LT3029392T/lt
Publication of EP3029392A1 publication Critical patent/EP3029392A1/de
Application granted granted Critical
Publication of EP3029392B1 publication Critical patent/EP3029392B1/de
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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • 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
    • 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
    • F24F13/24—Means for preventing or suppressing noise

Definitions

  • Present invention relates to a stabilizing and sealing arrangement for smaller air handling units with low installation height, so called “side-by-side” air handling units, which differs from “normal” air handling units which in turn can be categorized as “double deckers”.
  • the side-by-side air handling unit is often installed in the false ceiling and are normally available up to air flows around 3200 m 3 /s.
  • AHU air handling units
  • Air handling units in this segment can be divided into two types - "framework units” and “housing units”.
  • Framework units are designed in a similar way as what is common at larger AHU's, with framework profiles as the stabilizing construction and panels inserted and screwed to the framework, for enclosure, stability and isolation.
  • a typical panel consists of two steel sheet plates with insulation in between.
  • Access to the interior for maintenance and service of filters, heat exchangers, fans, controls etc. is normally solved by openable panels in form of doors with hinges and locks. Panels and doors are sealed with either sealing mastic, seals or sealing strips or a combination of them, depending on function and where in the construction. Typically, sealing mastic is used for permanent sealing and seals/sealing strips are often used at doors.
  • the framework units often have plastic or metal corners to join the framework profiles and a lot of efforts have to be done to solve the sealing issue at the corners, which are a critical spot in the framework construction.
  • the new design of the AHU comprises a top panel, a bottom panel and two connection panels in a similar way as existing units, but the invention is characterized by an extra support plate which is arranged on each long side of the AHU, i.e. one on the installation side and one on the service side.
  • the support plates are fixedly arranged to the sides of the top-, bottom- and connection panels i.e. the end sides facing the installation side and the service side.
  • each support plate comprises a first seal on a first side, the side facing the housing, and thereby forming a very air tight seal between the sides of the top-, bottom- and connection panel sides and the support plate, when the support plate is fixedly connected to the end sides.
  • the first seal is arranged in such way that any contact between adjacent end sides and the support plate has the first seal in between them, also including the contact between end sides of the interior structures, holders etc. and the support plate.
  • the support plate has openings, both for access of the interior, i.e. for service and maintenance, for installation purposes and also openings for assembly of the support plate and assembly of other parts as interior structures and accessories, like holes for pop-rivets and the like.
  • the first seal on the first side is complemented by that all openings in the support plate are in turn covered by one or more hatch-like panels, each comprising a second seal facing the support plate.
  • the seal abuts the second side of the support plate - the side facing away from the housing, in such way that the second seal is arranged between every possible contact of the hatch-like panel and the support plate.
  • the hatch-like panels are fitted to the support plate in a removable way for access to the interior and covers one or more underlying openings.
  • Existing solutions do not comprise this complete sealing solution since for example assembly holes for pop-rivets, screws or the like are not covered with sealing in a proper way.
  • the first seal surrounds all openings for assembly of the support plate to the sides of the housing in an overlaying manner so the risk of air leakage to the assembly hole is already here a minimum.
  • all openings in the support plate are in turn covered in an overlaying manner by the one or more hatch-like panels with the second sealing, meaning that also in this layer, every opening is surrounded by seal and thereby provides a complete tight seal.
  • a hatch for access to filters may also cover underlying pop-rivets and their assembly holes and also other eventual holes.
  • the first seal covers the complete surface of the first side of the support plate - the side facing the housing and the end sides of the housing panels. Holes provided for service and installation access are though not covered by this first seal.
  • This sealing arrangement all adjacent housing end sides and interior structures as filter holders, heat exchanger holders, heater holders, partition walls etc. all getting an air tight seal to the support plate, which thereby provides high leakage protection as well as stopping internal leakage between the different air spaces within the AHU.
  • the sealing arrangement in existing housing units often consists of a sealing strip applied at the side panel or door, hopefully in the correct position to seal between sides and adjacent interior structures or sides.
  • the present solution is a more "forgiving" design where the seal is overlapping every part which is to be sealed with respect to the sides, and the seal also covers any assembly hole in an overlapping manner, why the use of sealing mastic for sealing at the end sides is unnecessary. This gives a short assembly time and an easier assembly as well as a better over time sealing compared to prior art solutions.
  • the second side of the support plate has a substantially smooth surface at least in the area where the second seal abuts.
  • the seal thickness is of course adapted to accommodate any irregularities in the underlying surface, when the hatch-like panel is fitted to the support panel. But to keep the seal thickness as low as possible and the leakage as low as possible it is an object of the invention to keep the surface as smooth as possible for a good seal between the second side of the support plate and the abutting hatch-like panels.
  • the hatch-like panels are adapted in the same way as the support plate.
  • Some of the hatch-like panels comprises/carries installations as a heater or controls, which in turn needs to be covered since the installation in the hatch-like panel means holes in the panel. Therefore according to a preferred embodiment of the invention, any service opening, like for installations or maintenance, in the hatch-like panels is covered by a lid-like arrangement, each arranged with a third seal, facing the hatch-like panel, so that every contact between the lid-like arrangement and the hatch-like panel has the third seal between them.
  • the object of the invention is maintained with always having a seal surrounding any possible leakage source like openings.
  • the lid is screwed to the hatch-like panel and the seal is achieved when the lid is assembled. If a leakage occurs through openings in the hatch-like panels it is taken care of by the third sealing applied on the lid.
  • any assembly hole for pop-rivets or screws in the hatch-like panels is covered by a plug to further stop any possible leakage this way. Even though all assembly holes are surrounded with sealing through the second sealing attached to the hatch-like panel for sealing between the support plate and the panel, there might be a small leakage through the hole itself, if not covered by a lid as presented in the preceding claim description. Therefore an extra sealing is provided through the plug covering the assembly hole in the outer panel material. Throughout the whole construction design the seal arrangement is well thought out to fulfill the high demands regarding leakage. Known side-by-side units don't fulfill the demands and therefore suffers from high leakage values.
  • the support plate has a stabilizing C-shape design.
  • the C-shape is formed by folding a steel sheet plate in such a way as the web is forming the connection part with dimensions corresponding to the installation side and the service side of the housing and one flange at each end of the web is formed, i.e. along the top and the bottom of the AHU and protruding away from the housing. All eventual openings are located in the connection part and it is the connection part that is covered with the first seal on the side facing the housing.
  • the flanges haven't only a stabilizing function, they also embraces the hatch-like panels on the upper and lower side so that, when a hatch is opened it doesn't fall down, but instead rests on the lower flange, which is convenient for the service technician.
  • the upper flange is also used for connecting a roof in a simple manner, if the unit is arranged as an outdoor unit and need weather protection. By the flanges it is possible to attach a roof to the housing without making holes in the housing and thereby so to speak "puncture" the air tight enclosure.
  • Prior art solutions without the support plate have attachments for roof or eyebolts screwed directly into the housing.
  • Fig. 1 shows a preferred embodiment of the invention where a side-by-side air handling unit 1, with a housing 2 comprising a top panel 3, a bottom panel 4, and two connection panels 5, 6, for connection of air ducts on respective short end of the housing 2.
  • the long sides of the housing 2 can be described as a service side 7 and an installation side 8, and the housing 2 further comprises a number of interior structures 9, like filter holders, heat exchanger holders, heater holders, partition walls etc.
  • the side-by-side air handling unit 1 of course also includes normal equipment for an AHU, like supply fan, exhaust fan, controls, filters, heat exchangers etc. but these are not shown or described here.
  • the top panel 3, the bottom panel 4, and connection panels 5, 6 have end sides 3a, 3b; 4a, 4b; 5a, 5b; 6a, 6b facing the service side 7 and the installation side 8 respectively, which end sides 3a, 3b; 4a, 4b; 5a, 5b; 6a, 6b have a substantially smooth surface provided for best sealing possibilities. Also at least some of the interior structures 9 have at least one end side 9a, b facing the service side 7 and installation side 8 respectively.
  • a respective support plate 10 is fixedly attached to the housing 2, preferably by pop-rivets or screws.
  • the support plate 10 is preferably also fixedly attached to the interior structures 9 to stabilize also these structures which give a robust housing 2 and interior.
  • the support plate 10 has a stabilizing C-shape design.
  • the C-shape is formed by folding a steel sheet plate in such a way as a web 23 is formed and utilizing the connection part with dimensions corresponding to the service side 7 and the installation side 8 of the housing 2, and further one flange 24 at each end of the web 23 is formed and protruding away from the housing 2, in direction of a second side 14 of the support plate 10.
  • a weather protection roof not shown
  • the support plate 10 comprises a first seal 11, attached on a first side 12 (connection side) of the support plate 10.
  • the first side 12 is facing the housing 2 and thereby also facing the panel and interior end sides 3a, 3b; 4a, 4b; 5a, 5b; 6a, 6b; 9a, 9b.
  • the first seal 11 covers the whole surface of the first side 12 of the support plate, which means that only openings 13 in the support plate is not covered by the first seal 11.
  • Fig. 2 shows the side-by-side air handling unit 1 with the support plate 10 fixedly attached to the housing 2.
  • the support plate 10 comprises openings 13 for access to the interior for service and maintenance of fans, heat exchanger, filter exchange, etc. Any opening/hole in the support plate 10 is a possible leakage source and therefore any opening 13, like assembly holes, service openings and openings for installations like heaters etc. is covered in an overlapping manner by a hatch-like panel 15a...15n, each comprising a second seal 16a...16n, facing the second side 14 of the support plate 10, such as each opening 13 is surrounded by the second seal 16a...16n.
  • the second seal 16a...16n preferably covers the whole surface, facing the second side 14 of the support plate 10, of the hatch-like panel 15a...15n.
  • the hatch-like panel 15b with the second seal 16b covers the control installation plate in the same way as other hatch-like panels covers underlying openings/installations, but the hatch-like panel 15b in this case also comprises an opening 17, 18 for access the supervision and settings of the control system.
  • This opening 17, 18 is in turn covered by a lid-like arrangement 19, which is arranged with a third seal 20, facing the hatch-like panel 15b in such way that every contact between the lid-like arrangement 19 and the hatch-like panel 15b has the third seal 20 in between, for sealing of the underlying opening/openings.
  • Some of the hatch-like panels 15a...15n, like hatches for maintenance access of filters etc., are arranged to be easily removed and therefore comprises hand operated "finger screws" for unlocking and removing the hatch.

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)
EP14196052.6A 2014-12-03 2014-12-03 Stabilisierungs- und Dichtungsanordnung Active EP3029392B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14196052.6A EP3029392B1 (de) 2014-12-03 2014-12-03 Stabilisierungs- und Dichtungsanordnung
LTEP14196052.6T LT3029392T (lt) 2014-12-03 2014-12-03 Stabilizuojantiir izoliuojanti įranga

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14196052.6A EP3029392B1 (de) 2014-12-03 2014-12-03 Stabilisierungs- und Dichtungsanordnung

Publications (2)

Publication Number Publication Date
EP3029392A1 true EP3029392A1 (de) 2016-06-08
EP3029392B1 EP3029392B1 (de) 2017-04-05

Family

ID=52102460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14196052.6A Active EP3029392B1 (de) 2014-12-03 2014-12-03 Stabilisierungs- und Dichtungsanordnung

Country Status (2)

Country Link
EP (1) EP3029392B1 (de)
LT (1) LT3029392T (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1031799A2 (de) * 1999-02-25 2000-08-30 Kooltronic Inc. Luftbehandlungsvorrichtung und Verfahren zur Befestigung in einem Gehäuse
WO2001050067A2 (en) * 1999-12-30 2001-07-12 Carrier Corporation Air handler framework
CN201616959U (zh) * 2009-08-18 2010-10-27 上海惠亚电子有限公司 一种户外机柜的结构
CN201629923U (zh) * 2010-03-11 2010-11-10 浙江省邮电器材公司杭州设备分公司 新型户外机柜

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1031799A2 (de) * 1999-02-25 2000-08-30 Kooltronic Inc. Luftbehandlungsvorrichtung und Verfahren zur Befestigung in einem Gehäuse
WO2001050067A2 (en) * 1999-12-30 2001-07-12 Carrier Corporation Air handler framework
CN201616959U (zh) * 2009-08-18 2010-10-27 上海惠亚电子有限公司 一种户外机柜的结构
CN201629923U (zh) * 2010-03-11 2010-11-10 浙江省邮电器材公司杭州设备分公司 新型户外机柜

Also Published As

Publication number Publication date
EP3029392B1 (de) 2017-04-05
LT3029392T (lt) 2017-06-12

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