EP0674865A1 - Unité de vitrage isolant amélioré avec éléments de chauffage - Google Patents

Unité de vitrage isolant amélioré avec éléments de chauffage Download PDF

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Publication number
EP0674865A1
EP0674865A1 EP95104073A EP95104073A EP0674865A1 EP 0674865 A1 EP0674865 A1 EP 0674865A1 EP 95104073 A EP95104073 A EP 95104073A EP 95104073 A EP95104073 A EP 95104073A EP 0674865 A1 EP0674865 A1 EP 0674865A1
Authority
EP
European Patent Office
Prior art keywords
glazing unit
insulating glazing
low
glass sheet
unit 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.)
Withdrawn
Application number
EP95104073A
Other languages
German (de)
English (en)
Inventor
Alberto Bertolini
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.)
Isoclima SpA
Original Assignee
Isoclima SpA
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 Isoclima SpA filed Critical Isoclima SpA
Publication of EP0674865A1 publication Critical patent/EP0674865A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0404—Cases or cabinets of the closed type
    • A47F3/0426—Details
    • A47F3/0434—Glass or transparent panels

Definitions

  • the present invention relates to an improved insulating glazing unit with heating elements.
  • insulating glazing units that have one or more air spaces and occasionally heating elements, are used in industrial sectors in which it is necessary to reduce the heat transmission rate (U) of the glazing (i.e., to reduce the flow of heat between the outside and the inside) and to demist the outer surface.
  • U heat transmission rate
  • a particular field in which insulating glass panes with heating elements are in widespread use is the field of refrigeration, which uses cold-storage units inside which the operating temperature is as low as -25 o Celsius.
  • one of the glass sheets is a "low-emissive" (LE) type glass, that is to say, it is a sheet that has been treated on its surface by depositing metals and/or metal oxides and has the known function of "reflecting" the long-wavelength radiant component of the heat emitted by the heating elements that are present inside enclosed spaces (radiators, people, walls, etcetera).
  • LE low-emissive
  • the position of the low-emissive glass sheet with respect to the orientation of the glazing unit is not particularly relevant, so long as the treated side is directed towards the inside of the chamber.
  • Glass sheets on which electrically conducting material (coating) is deposited are instead used for demisting.
  • the power levels required for demisting vary according to the structure of the glazing unit (normally between 1 and 2.5 W/dm2) and according to the operating temperatures.
  • the coating is discontinued in the vicinity of the peripheral region of the glass sheet to avoid possibly short-circuiting it by means of the perimetrically located spacer profiles and by means of the metal frame and to fully insulate the region, which is normally subjected to an electric voltage of 220 volts, taken directly from the electric mains.
  • An aim of the present invention is to provide an insulating glazing unit with heating elements which despite ensuring optimum heating uniformity allows low supply voltages so as to increase safety.
  • a consequent important object is to provide an insulating glazing unit with heating elements that is satisfactory both optically and aesthetically.
  • Another important object is to provide an insulating glass pane that is constructively simpler than current ones.
  • Another important object is to provide an insulating glazing unit that is composed of elements that are particularly flexible from the operational point of view.
  • Another important object is to provide an insulating glazing unit that has, with respect to conventional types, a lower heat transmission rate, thickness being equal.
  • Another object is to provide an insulating glazing unit that is thinner and lighter than current ones.
  • an improved insulating glazing unit with heating elements characterized in that at least one of the glass sheets is a low-emissive (LE) type glass sheet which has two collectors for electric power supply and consequent heating.
  • LE low-emissive
  • figure 1 is a schematic sectional view.
  • an insulating glazing unit with heating elements comprises a first inner glass sheet 10 of the normal float type and a second tempered glass sheet 11 of the low-emissive type with a conducting deposit 12 on the surface directed towards the first glass sheet 10.
  • a screen print is in fact performed on said conducting deposit 12 so as to form two electric collectors 13 and is vitrified by means of a heat tempering process.
  • the final Rq values allow to use power supply voltages that for most geometrical configurations of the glazing units are lower than 50 volts (RMS), thus improving safety.
  • Interchangeability of the electronic module for the various insulating glazing unit sizes can be easily achieved by using an adapted electrical resistor for the appropriate adjustment of the duty cycle of the internal switching.
  • a perimetric spacer 14 spacer profile
  • spacer profile can be constituted by a conventional aluminum profile or by a profile which has thermal insulation functions and is based on flexible silicone foam containing a 3-Angstrom molecular sieve which has the lowest heat conductivity in the field of spacers.
  • this spacer made of flexible silicone foam it is possible to produce insulating glazing units with a single 12-mm air space with a heat transmission rate that is equal to that of a conventional glazing unit with aluminum spacers and two 6-mm air spaces.
  • this solution achieves reductions in the overall weight of the glazing unit which are of about 30% and better light transmission due to the reduced thickness of the glass sheets and to lower light reflection.
  • the elements of the glazing unit are kept together by a butyl seal 15.
  • Figure 1 also illustrates an external frame 16 for supporting a glazing unit with heating elements of the structural type.
  • the perimetric part of said portion 12 is covered by means of a layer of paint 17 which has insulating characteristics.
  • collectors 13 can be placed at the greatest possible distance so as to heat the entire surface of the glass sheet 11.
  • Another advantage is that it is possible to transfer the heating layer onto the outer glass sheet, in view of the low voltages involved.
  • the materials employed may be any according to the requirements.
EP95104073A 1994-03-28 1995-03-20 Unité de vitrage isolant amélioré avec éléments de chauffage Withdrawn EP0674865A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT94PD000057A ITPD940057A1 (it) 1994-03-28 1994-03-28 Vetrata isolante riscaldante perfezionata.
ITPD940057 1994-03-28

Publications (1)

Publication Number Publication Date
EP0674865A1 true EP0674865A1 (fr) 1995-10-04

Family

ID=11390621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95104073A Withdrawn EP0674865A1 (fr) 1994-03-28 1995-03-20 Unité de vitrage isolant amélioré avec éléments de chauffage

Country Status (2)

Country Link
EP (1) EP0674865A1 (fr)
IT (1) ITPD940057A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2777762A1 (fr) * 1998-04-23 1999-10-29 Sovis Facade de meuble d'enceinte climatique.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036657A2 (fr) * 1980-03-25 1981-09-30 Ardco, Inc. Fenêtre réfléchissant le rayonnement infrarouge, transparente pour la lumière visible
FR2533754A1 (fr) * 1982-09-23 1984-03-30 Comp Generale Electricite Procede de fabrication de cellules solaires
FR2534007A1 (fr) * 1982-10-05 1984-04-06 Termofrost Sweden Ab Porte en verre pour congelateurs et chambres froides
JPS59141273A (ja) * 1983-02-01 1984-08-13 Anelva Corp 薄膜装置
EP0314477A2 (fr) * 1987-10-30 1989-05-03 Olo, Olavi Assemblage d'une porte en verre et d'une charnière
EP0406200A1 (fr) * 1989-06-30 1991-01-02 Termofrost Ab Construction de porte adaptée pour des enceintes de réfrigération et de congélation
WO1993018266A1 (fr) * 1992-03-12 1993-09-16 Anthony's Manufacturing Company, Inc. Porte a chassis en expanse
FR2695789A1 (fr) * 1992-09-15 1994-03-18 Techmeta Miroir chauffant, procédé et dispositif pour sa réalisation.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036657A2 (fr) * 1980-03-25 1981-09-30 Ardco, Inc. Fenêtre réfléchissant le rayonnement infrarouge, transparente pour la lumière visible
FR2533754A1 (fr) * 1982-09-23 1984-03-30 Comp Generale Electricite Procede de fabrication de cellules solaires
FR2534007A1 (fr) * 1982-10-05 1984-04-06 Termofrost Sweden Ab Porte en verre pour congelateurs et chambres froides
JPS59141273A (ja) * 1983-02-01 1984-08-13 Anelva Corp 薄膜装置
EP0314477A2 (fr) * 1987-10-30 1989-05-03 Olo, Olavi Assemblage d'une porte en verre et d'une charnière
EP0406200A1 (fr) * 1989-06-30 1991-01-02 Termofrost Ab Construction de porte adaptée pour des enceintes de réfrigération et de congélation
WO1993018266A1 (fr) * 1992-03-12 1993-09-16 Anthony's Manufacturing Company, Inc. Porte a chassis en expanse
FR2695789A1 (fr) * 1992-09-15 1994-03-18 Techmeta Miroir chauffant, procédé et dispositif pour sa réalisation.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 272 (E - 284) 13 January 1984 (1984-01-13) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2777762A1 (fr) * 1998-04-23 1999-10-29 Sovis Facade de meuble d'enceinte climatique.
WO1999055204A1 (fr) * 1998-04-23 1999-11-04 Bonnet-Neve Meuble d'enceinte climatique
US6435630B1 (en) * 1998-04-23 2002-08-20 Bonnet-Neve Climatic condition reproducer cabinet
CN1119967C (zh) * 1998-04-23 2003-09-03 邦内特－内夫公司 空气调节橱柜

Also Published As

Publication number Publication date
ITPD940057A0 (it) 1994-03-28
ITPD940057A1 (it) 1995-09-28

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