EP1417443B1 - Thermal barrier for air handling unit (ahu) cabinet - Google Patents

Thermal barrier for air handling unit (ahu) cabinet Download PDF

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Publication number
EP1417443B1
EP1417443B1 EP02761102A EP02761102A EP1417443B1 EP 1417443 B1 EP1417443 B1 EP 1417443B1 EP 02761102 A EP02761102 A EP 02761102A EP 02761102 A EP02761102 A EP 02761102A EP 1417443 B1 EP1417443 B1 EP 1417443B1
Authority
EP
European Patent Office
Prior art keywords
wall
panel
air handling
opening
cover
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.)
Expired - Lifetime
Application number
EP02761102A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1417443A1 (en
Inventor
John C. Adams
Michael W. Austin
Christain C. Herbeck
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.)
Carrier Corp
Original Assignee
Carrier 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
Priority claimed from US09/905,234 external-priority patent/US6497256B1/en
Priority claimed from US09/904,676 external-priority patent/US6820952B2/en
Application filed by Carrier Corp filed Critical Carrier Corp
Publication of EP1417443A1 publication Critical patent/EP1417443A1/en
Application granted granted Critical
Publication of EP1417443B1 publication Critical patent/EP1417443B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/062—Walls defining a cabinet
    • F25D23/063—Walls defining a cabinet formed by an assembly of panels

Definitions

  • This invention relates generally to a panel for use in an air handling unit that forms a thermal barrier to limit the flow of energy through the panel.
  • the outer casing of the unit will "sweat” due to condensation of water vapor in the relatively hot outside air upon contact with the casing.
  • the moisture so developed will run off the unit onto the floor or onto equipment contained in the unconditioned space. Such run off creates a safety hazard for people working in the area and can damage the equipment.
  • U.S. Patent 5,870,868 discloses an outer panel for an air conditioner.
  • the panel disclosed therein includes an outer peripheral frame formed of four channels interconnected by four corner blocks, each made of a heat insulating material.
  • a top cover and a bottom cover are assembled to the outer wall to define a cavity that is filled with an insulating material.
  • the top and bottom covers have flanges that are received in channels provided in the outer wall when assembled.
  • a further object of the present invention is to limit the loss of energy through the walls of a duct carrying conditioned air.
  • a still further object of the present invention is to provide an improved panel for use in an air handling unit.
  • Another object of the present invention is to provide a structural panel for use in an air handling unit that has a relatively high R value.
  • Yet another object of the present invention is to prevent ducts of an air handling unit from sweating when carrying conditioned air.
  • FIG. 1 there is illustrated a section of an air handling unit (AHU), generally referenced 10, that employs wall panels 12 embodying the teachings of the present invention.
  • the air handling unit is composed of a series of rectangular shaped modules each of which possess a superstructure including a pair of rectangular, planar end frames 13 and 14 that are connected at the corners by a pair of horizontally disposed upper beams 15 and a pair of horizontally disposed lower beams 16.
  • Each end frame includes a pair of opposed side rails 17 and 18 and an upper rail 20 and a lower rail 21.
  • the rails and the beams are retained slidably in corner pieces 23. The rails and the beams in assembly thus establish an open skeleton having rectangular openings.
  • wall panels embodying the teachings of the present invention can be placed in the skeleton openings to close the AHU sections.
  • Each panel is constructed so that it has an extremely high insulation value, thus greatly impeding the flow of heat into or out of the unit which, in turn, prevents the unit from sweating.
  • each panel 12 includes a rectangular frame 25 having a pair of opposed side walls 27 and 28 and a pair of opposed end walls 29 and 30.
  • Each wall contains mitered ends so that the walls can be brought together to form right angle corners.
  • Each wall is molded of a plastic material having a high insulation value and low thermal conductivity.
  • each wall contains a vertically disposed wall partition 31 having a rectangular shaped recess 32 formed centrally therein that extends along the length of the partition.
  • the recess 32 is inwardly disposed with reference to the outer surface of the partition 31.
  • An upper tab 33 and a lower tab 34 are integrally molded on the inside of the partition 31 on either side of the recess 32.
  • the tabs 33, 34 extend along the length of the wall.
  • the tabs 33, 34 run parallel to the partition 31 and coact therewith to form narrow channels 35 and 36.
  • the upper channel 35 opens towards the top of the wall while the lower channel 36 opens toward the bottom of the wall.
  • a flange 38 which is integral with the wall partition 31, runs along the top edge of the partition 31.
  • the flange 38 extends outwardly from the wall partition 31 and forms an angle that is slightly less than 90° with the partition 31 so that the flange 38 extends downwardly at a slight angle from the top edge of the partition.
  • a top cover 40 and a bottom cover 41 are used to close the frame and create a cavity inside the panel.
  • Each cover 40, 41 contains an inwardly directed skirt 45 that depends downwardly from the cover and extends around the entire periphery of the cover.
  • the skirts 45 are inserted into the upper and lower channels that encircle the panel frame.
  • a curable foam 43 is injected into the cavity to entirely fill the cavity with the foam. When the foam cures, it bonds the frame walls together in abating contact and bonds the covers to the frame.
  • the curable foam is a polyurethane material which like the panel frame walls has a high insulation value.
  • Each panel is sized so that the panel frame can be slipped into an opening in one of the unit sections.
  • a close sliding fit is provided between panel frame walls and the side rails and upper and lower beams that form the receiving opening.
  • the flange 38 that surrounds the panel frame is compressed against the outer surfaces of the rails and beams forming the opening.
  • compressible hollow seals 50 are preferably mounted around the panel receiving opening. At panel closure, the lower cover 41 of the panel compresses the seals as shown in Fig. 7 to prevent air inside the unit from escaping around the panel.
  • Each latching mechanism includes a cylindrical tumbler 62 that is retatchably contained within the tube 63.
  • the tumbler contains an outer flange 64 (see Figs. 8 and 9) that has a six sided slot 65 that passes inwardly through the flange.
  • An Allen wrench 67 is insertable into the slot and is used to turn the tumbler between an open position and a locking position.
  • An elongated arm 70 is secured to the tumbler that is arranged to pass upwardly through a slotted hole 69 in the containing tube as the tumbler is turned from an open position as illustrated in Fig. 8 to a locking position as illustrated in Fig. 9.
  • the arm 70 is arranged to pass into the recess 32 surrounding the panel frame and to force the panel into sealing contact against the seals 50 surrounding the panel receiving opening as shown in Fig. 7.
  • at least one latching mechanism is employed to engage each of the walls making up the panel frame 25.
  • each of the panels is essentially identical to the panels previously described, in addition, each peripheral wall of the panel facing the peripheral wall of the adjacent panel possesses a generally U-shaped groove 90 associated with the channel.
  • each groove 90 extends generally parallel to an associated one of the channels in the wall and is disposed peripherally outwardly from the associated channel.
  • the depth of each groove 90 is substantially shorter than the depth of the associated channel, approximately one-quarter to one-half of the depth of the associated channel.
  • each groove 90 is formed by integrally molding the groove 90 with the wall.
  • At least one of the panels includes a substantially L-shaped bar 92 having a first leg 94 adapted to abut an associated one of the channels and to extend into the associated groove 90.
  • the first leg 94 includes a leg or boss 95 adapted to abut the upper edge of the associated groove 90 and is adapted to act as a stop.
  • the L-shaped bar 92 also includes a second leg 96 which preferably possesses a resiliently deformable bulbous section 98 adapted to compressably, sealingly abut with the cover of an adjacent panel, as best shown in Figs. 10 and 11.
  • the bulbous section 98 is fashioned in a tubular configuration having a hollow core.
  • the second leg 96 may possess deformable and resiliently deformable configurations other than a bulbous shape.
  • the remaining portion of the L-shaped bar 92, other than the bulbous section 98, is preferably rigid, and preferably the entire L-shaped bar 92 is fashioned as a dual durometer bulb seal.
  • the L-shaped bar 92 extends along the entire length of the interface between the two opposing walls of adjacent panels.
  • the bulbous section 98 substantially prevents air from flowing between the interior and the exterior of the duct, that is, prevents air from flowing through the region between the opposing walls adjacent panels.
  • the bulbous section 98 preferably possesses a substantially elliptical cross-section, as best shown in Figs. 12 and 13.
  • the bulbous section 98 is preferably tubular and possesses a hollow core, with open ends, the present invention contemplates that the bulbous section may be tubular with closed ends and may be filled with a fluid.
  • the core of the bulbous section 98 may be filled with a deformable solid such as a foam rubber or other elastomer.
  • the bulbous section 98 may not have any core section, but rather, may be fashioned from a unitary piece of material such as a foam rubber or other elastomer.
  • the bulbous section 98 may be fashioned of a material that is discrete from the material from which the remainder of the L-shaped bar 92 is fashioned, and for example, the bulbous section 98 may be adhered to or otherwise secured to the remaining portion of the L-shaped bar 92.
  • the L-shaped bar 92 may be releasably fastened to the associated panel by the provision of a screw 100 extending through the first leg 94 of the L-shaped bar 92, through the associated channel and cover skirt, and into the foam insulation, as best shown in Fig. 10.
  • a screw 100 extending through the first leg 94 of the L-shaped bar 92, through the associated channel and cover skirt, and into the foam insulation, as best shown in Fig. 10.
  • the L-shaped bar 92 is mounted to the wall of the associated panel by the insertion of the first leg 94 into the associated groove 90 and by the screw 100, it is within the scope of the present invention that other designs may also be used effectively, such as integrally forming the L-shaped leg 92 with the wall, adhering the L-shaped leg 92 to the wall, and clipping the L-shaped bar 92 to the wall.
  • the first leg 94 may extend substantially parallel to the second leg 96, with the second leg mounted on the cover 41 of the associated panel.
  • the L-shaped bar 92 is preferably selectively, releasably mounted to the associated panel, it is within the scope of the invention that the bar 92 may be fixedly mounted to the panel.
  • hinged wall panels 114 may be used instead of wall panels 12 when easy access to the interior of AHU 10 is required.
  • a latch holds hinged wall panel 114 closed by interacting with a side piece 18 0r another latch on an opposing wall.
  • Hinged wall panel 114 includes a living hinge 122 which in turn includes a mounting flange 124 for mounting panel 114 onto side piece 18, a hinge portion 126 which bends without breaking, and an edge extrusion 128 which connects living hinge 122 to a panel perimeter.
  • a seal 50 preferably hollow and compressible, is affixed to side piece 18. When wall panel 114 is closed, panel 114 compresses seal 50 to form a sealing fit with side piece 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Duct Arrangements (AREA)
  • Patch Boards (AREA)
  • Air-Flow Control Members (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Building Environments (AREA)
  • Catalysts (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Drying Of Solid Materials (AREA)
  • Drying Of Gases (AREA)
EP02761102A 2001-07-13 2002-07-11 Thermal barrier for air handling unit (ahu) cabinet Expired - Lifetime EP1417443B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US905234 1978-05-12
US09/905,234 US6497256B1 (en) 2001-07-13 2001-07-13 Thermal barrier for air handling unit (AHU) cabinet
US904676 2001-07-13
US09/904,676 US6820952B2 (en) 2001-07-13 2001-07-13 Hinged panel for air handler cabinet
PCT/US2002/022468 WO2003006891A1 (en) 2001-07-13 2002-07-11 Thermal barrier for air handling unit (ahu) cabinet

Publications (2)

Publication Number Publication Date
EP1417443A1 EP1417443A1 (en) 2004-05-12
EP1417443B1 true EP1417443B1 (en) 2006-09-13

Family

ID=27129404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02761102A Expired - Lifetime EP1417443B1 (en) 2001-07-13 2002-07-11 Thermal barrier for air handling unit (ahu) cabinet

Country Status (18)

Country Link
EP (1) EP1417443B1 (ja)
JP (1) JP3923940B2 (ja)
KR (1) KR100548861B1 (ja)
CN (1) CN100343598C (ja)
AT (1) ATE339661T1 (ja)
AU (1) AU2002326393B2 (ja)
BR (1) BR0210961A (ja)
CA (1) CA2451409C (ja)
DE (1) DE60214736T2 (ja)
ES (1) ES2271319T3 (ja)
IL (2) IL159602A0 (ja)
MX (1) MXPA04000321A (ja)
NO (1) NO321232B1 (ja)
NZ (1) NZ530302A (ja)
PL (1) PL367103A1 (ja)
RU (1) RU2285207C2 (ja)
WO (1) WO2003006891A1 (ja)
YU (1) YU3004A (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012097908A1 (en) * 2011-01-18 2012-07-26 Tasson Pietro Enclosure system with thermal barrier for hvac air handling units
SG10201606130VA (en) * 2016-07-25 2018-02-27 Instad Pre Fabrication Pte Ltd A Duct Panel
KR102568407B1 (ko) * 2018-06-27 2023-08-21 엘지전자 주식회사 진공단열체 및 냉장고

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2180177A (en) * 1935-10-30 1939-11-14 Servel Inc Refrigerator
GB1127308A (en) * 1966-02-16 1968-09-18 Albans Rubber Company Ltd Improvements in or relating to sealing strips
DE1917949A1 (de) * 1969-04-09 1970-10-15 Niemeyer Soehne H Wendewerk fuer Drehpfluege
DE3014585A1 (de) * 1980-04-16 1981-10-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Kuehl- oder gefriergeraet
US4656795A (en) * 1983-06-10 1987-04-14 H. H. Robertson Company Floor panel for elevated floor assembly
DE4222971C2 (de) * 1992-07-13 1995-12-14 Robatherm Gmbh Waerme Und Klim Paneel zur Abdeckung bzw. Verkleidung
JP3261494B2 (ja) * 1996-06-25 2002-03-04 新晃工業株式会社 空調装置の外壁パネル
WO2001050068A1 (en) * 1999-12-30 2001-07-12 Carrier Corporation Extruded channel for insulating panel construction
NL1014208C2 (nl) * 2000-01-27 2001-07-30 Holland Heating Bv Samenstel van delen voor een kast, in het bijzonder een luchtbehandelingskast en een werkwijze voor het maken daarvan.

Also Published As

Publication number Publication date
NZ530302A (en) 2005-07-29
NO20040102L (no) 2004-01-09
RU2285207C2 (ru) 2006-10-10
CA2451409A1 (en) 2003-01-23
RU2004100838A (ru) 2005-05-27
DE60214736T2 (de) 2007-10-04
PL367103A1 (en) 2005-02-21
IL159602A0 (en) 2004-06-01
KR20040016904A (ko) 2004-02-25
CN1541319A (zh) 2004-10-27
BR0210961A (pt) 2004-06-08
IL159602A (en) 2007-05-15
YU3004A (sh) 2005-07-19
KR100548861B1 (ko) 2006-02-02
ES2271319T3 (es) 2007-04-16
EP1417443A1 (en) 2004-05-12
DE60214736D1 (de) 2006-10-26
MXPA04000321A (es) 2004-05-04
JP3923940B2 (ja) 2007-06-06
WO2003006891A1 (en) 2003-01-23
AU2002326393B2 (en) 2007-03-29
JP2004534931A (ja) 2004-11-18
ATE339661T1 (de) 2006-10-15
NO321232B1 (no) 2006-04-10
CA2451409C (en) 2007-01-30
CN100343598C (zh) 2007-10-17

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