EP0647305A1 - Oven door - Google Patents

Oven door

Info

Publication number
EP0647305A1
EP0647305A1 EP94915194A EP94915194A EP0647305A1 EP 0647305 A1 EP0647305 A1 EP 0647305A1 EP 94915194 A EP94915194 A EP 94915194A EP 94915194 A EP94915194 A EP 94915194A EP 0647305 A1 EP0647305 A1 EP 0647305A1
Authority
EP
European Patent Office
Prior art keywords
frame
window
plate
door
oven
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Withdrawn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
EP94915194A
Other languages
German (de)
French (fr)
Inventor
Pierre Lancelot
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.)
Eurofours SA
Original Assignee
Eurofours SA
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 Eurofours SA filed Critical Eurofours SA
Publication of EP0647305A1 publication Critical patent/EP0647305A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/04—Doors specially adapted for stoves or ranges with transparent panels
    • F24C15/045—Doors specially adapted for stoves or ranges with transparent panels being dismountable, e.g. giving access for cleaning

Definitions

  • the present invention relates to an oven door with two panes, which is adaptable to different types of ovens used in particular in the food industry, and more particularly to bakery ovens. It relates more particularly to an oven door whose inner window is pivoting.
  • a first type of oven the door of which comprises a frame and at least one internal window which is fixed directly to the door frame, being kept at a distance from the frame, by specific fastening means, of the screw or bolt type, acting as spacers.
  • the tight closure of this first type of oven is obtained by directly applying the interior glass of the door to the oven muffle, by means of a seal.
  • This seal can either be fixed on the periphery of the interior glass, or be fixed directly on the oven muffle.
  • the door used in this first type of oven also has the advantage of providing very good thermal insulation to the frame with respect to the interior glass, which glass is the only element of the door in contact with the oven muffle.
  • the thermal bridges between the interior glass and the frame are limited to point spacers, and the space existing between the glass and the frame makes it possible to obtain ventilation of the interior glass and of the frame.
  • this first type of oven has a second external window, this is for example directly embedded in the frame of the door.
  • a second type of oven has also been proposed, in particular in document GB 451 702, comprising a double-glazed door, in which one of the two panes is pivotally mounted relative to the frame of the door, which door comprises in besides means for closing the pivoting window.
  • These closing means of the pivoting window are quick to lock and unlock and are located opposite the pivot axis of the window. They allow the pivoting window to be locked in a position where it is parallel and spaced from the other window.
  • the pane which is pivotally mounted is the outer pane.
  • the pivoting window may be the interior window.
  • this second solution is preferable, so that the exterior window cannot be opened when the oven is operating, the door being closed.
  • the door of this double-glazed oven described in this document has the advantage of allowing quick and easy access to the space between the two panes, without requiring disassembly of one of the two panes.
  • this door is of the traditional type in that the inner glass is not intended to come to cooperate with a seal to achieve a sealed closure of the oven, unlike the first type of oven mentioned above.
  • This oven door therefore does not have the advantages of oven doors of the first type mentioned above.
  • the interior window is pivotally mounted, it is located inside the oven when the door is closed, which causes significant contamination of the pivoting members and locking means with locking and quick release of the interior window.
  • the goal that the applicant has set is to propose an oven door to two panes which on the one hand has an inner pane pivotally mounted relative to the frame, so as to allow quick and easy access to the space between the two panes, but which also has all the advantages of sealing and thermal insulation of oven doors of the first type.
  • the oven door comprises:
  • - a frame on which are mounted two panes which are parallel and spaced from each other, one of which is pivotally mounted relative to the frame, by means of a hinge piece, - and closing means quick locking and unlocking, which are located opposite the pivot axis of the interior window, and which allow the interior window to be kept in the closed position relative to the frame.
  • the closing means consist of one or more quick-closing closing spacers with quick locking and unlocking, which make it possible to keep the inner window at a distance relative to the inner face of the frame, when the inner window is closed;
  • the hinge part comprises at least one plate and the internal window is fixed at a distance from said plate by at least one point fixing spacer, so that said plate is applied and supported on the internal face of the frame, when the inner window is in the closed position.
  • each point fixing spacer crosses on either side each corresponding plate of the hinge part, and the internal face of the frame has an opening for the passage of said end, so that each plate of the hinge part is applied perfectly and positioned against said internal face of the frame.
  • FIG. 1 is a top view of an oven door of the invention
  • FIG. 2 is a front view of the door of Figure 1
  • FIG. 3 is a sectional view along the plane AA of a punctual spacer for closing the door of FIG. 1,
  • FIG. 4 is a sectional view along the plane BB of a point spacer for fixing the oven door of Figure 1
  • - Figures 5A is a front view of the part for fixing the hinge part on the frame of the door of FIG. 1,
  • FIG. 5B is a sectional view along the plane CC of the part in FIG. 5A,
  • FIG. 6A is a front view of the hinge part of the door of Figure
  • Figure 6B is a sectional view along the plane DD of the hinge part of Figure 6A.
  • the oven door 1 of the invention which is shown in Figure 1 has a hollow metal frame 2, of substantially rectangular shape, on which are mounted parallel an outer window 3 and an inner window 4.
  • the outer window 3 is directly embedded in the frame 2.
  • the inner window 4 is fixed and kept at a distance from the internal face 2a of the frame 2, so as to thermally insulate the outer window 3 and the frame 2, from the inner window 4, and d on the other hand to leave between the frame 2 and the interior window 4 a space 5, which is large enough to act as a ventilation corridor, by natural convection of the ambient air.
  • the door 1 equips an oven (not shown), it is pivotally mounted along a vertical pivot axis. In this case, when the door is closed, the external window 3 faces the user of the oven; the inner glass 4 is applied against the muffle of the oven, so as to ensure the tight closure thereof, by means of a seal surrounding the opening of the oven muffle.
  • the oven door 1 comprises a hinge part 6, which is pivotally mounted on the internal face 2a of the frame 2, along a pivot axis lb, which is in the particular example of FIG. 1 parallel to the pivot axis la from door 1; the internal window 4 is fixed, on the one hand directly to the internal face 2a of the frame 2, by two point closing spacers 7, with quick locking and unlocking which are located opposite the pivot axis 1b, and on the other hand to the hinge part 6 by two punctual fixing spacers 8.
  • each point closing spacer 7 comprises a locking ring 12 / quarter-turn screw 13 assembly.
  • the two quarter-turn screws 13 are fixed through the interior glass 4, respectively near the two angles of this window which are opposite to the pivot axis lb.
  • the two locking rings 12 are clips for quarter-turn screws, which are fixed directly to the internal face 2a of the frame 2, so that each quarter-turn screw 13 comes to fit in the corresponding locking ring 12 , when the interior window is in the closed position, as shown in FIG. 1.
  • Each locking ring 12 / quarter-turn screw 13 assembly also includes a seal 14, made of rubber.
  • This rubber seal 14 surrounds the corresponding quarter-turn screw 13 and passes through the interior window 4, so that it comes to bear on the internal face 2a of the frame 2 when the interior window 4 is closed (FIG. 3) . Its function is therefore on the one hand to ensure sealing at the level of the passage of the quarter-turn screw 13 through the interior glass 4, and on the other hand to serve as a spacer between the internal face 2a of the frame 2 and the inner glass 4.
  • the hinge part 6 consists of a metal rod 9, at the two ends of which are fixed in the same plane, for example by welding, two identical plates 10 , of rectangular shape and of small width compared to the length of the rod 9.
  • the rod 9 of the hinge part 6 of the door 1 is pivotally mounted along the pivot axis lb, by through part 11 of FIGS. 5A and 5B.
  • This part 11 comprises a flat part 1 la which is intended to be fixed on the internal face 2a of the frame 2, by means of three screws, and a part 1 lb, which has the shape of a gutter a V (FIG. 5B) , and which is intended to serve as a housing for the rod 9 of the hinge part 6, when said part 11 is fixed to the frame 2.
  • the two point fixing spacers 8 consist of two screws 15, which pass through the inner glass 4 and respectively each plate 10 of the hinge part 6. At each screw 15 is in further provided a rubber seal 17. On the internal face 2a of the frame 2, at each of the two plates 10 of the hinge part 6, an opening 16 has been made, in order to allow the passage of the end 15a of each screw 15, which is located at the other side of the plate 10, with respect to the interior glass 4.
  • the plates 10 are applied perfectly and bear on their entire surface, against the inner face 2a of the frame 2 of the door 1, and the inner window 4 is always correctly positioned relative to the frame 2.
  • the internal glass 4 is always correctly positioned with respect to this seal , and is perfectly applied with be this, when the door 1 is in the closed position, which makes it possible to obtain an optimum tight closure of the oven.
  • the door of the invention also makes it possible to obtain very good thermal insulation of the external glass 3 and of the frame 2 with respect to the internal glass 4.
  • this thermal insulation is increased by the fact that the number of points of contact between the internal glass 4 and the internal face 2a of the frame 2 has been limited to four, and that the surface of each of these contact points was deliberately chosen to be as small as possible, in particular with regard to the surface of the plates 10.
  • To access the space between the two panes 3 and 4 simply unblock the two screws 13, by turning them a quarter of a turn, then open the inner pane 4 by rotating it in the direction of the arrow F (FIG. 1), around the pivot axis lb. It is therefore no longer necessary to completely disassemble the interior window 4.
  • the invention is not limited to the description of a particular embodiment which has just been given by way of nonlimiting example.
  • the pivot axis of the interior window may possibly be horizontal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Wing Frames And Configurations (AREA)

Abstract

Oven door (1) comprising: a frame (2) on which are mounted two glass panes (3, 4) parallel and spaced part from one another, the inner pane (4) being pivotably mounted in relation to the frame (2) by means of a hinge element. The oven door also comprises closure means for fast locking and unlocking located opposite the pivot pin (1b^_) of the inner glass pane (4). The closure means maintain the inner glass pane (4) in a closed position in relation to the frame (2). According to the invention, the closure means consist of one or more individual closure spacers (7), capable of fast locking and unlocking, serving to maintain the inner glass pane (4) at a distance in relation to the inner frame surface (2a^_), when the inner glass pane is closed. The hinge piece (6) comprises at least one plate (10), and the inner glass pane is secured at a distance from the plate (10) by at least one pin-like fastening spacer (8), so that the plate (10) contacts and bears on the inner face of the frame (2), when the inner glass pane is in the closed position.

Description

PORTE DE FOUR OVEN DOOR
La présente invention concerne une porte de four à deux vitres, qui est adaptable sur différents types de fours employés notamment dans l'industrie alimentaire, et plus particulièrement sur des fours de boulangerie. Elle concerne plus particulièrement une porte de four dont la vitre intérieure est pivotante.The present invention relates to an oven door with two panes, which is adaptable to different types of ovens used in particular in the food industry, and more particularly to bakery ovens. It relates more particularly to an oven door whose inner window is pivoting.
On connaît déjà, notamment par le document FR 2 561 359, un premier type de four dont la porte comporte un cadre et au moins une vitre intérieure qui est fixée directement sur le cadre de la porte, en étant maintenue à distance du cadre, par des moyens de fixation ponctuels, du type vis ou boulons, faisant office d'entretoises. La fermeture étanche de ce premier type de four est obtenue en appliquant directement la vitre intérieure de la porte sur le moufle du four, par l'intermédiaire d'un joint d'étanchéité. Ce joint peut être soit fixé sur le pourtour de la vitre intérieure, soit être fixé directement sur le moufle du four. Lorsque la porte est en position fermée, la vitre intérieure est maintenue efficacement en position à distance du cadre de la porte par les entretoises ponctuelles, ce qui permet d'obtenir une fermeture étanche optimale. On évite par là-même les problème de fuites au niveau de la vitre intérieure que l'on rencontre dans les portes de fours traditionnels, dans lesquels la fermeture étanche du four est obtenue en faisant coopérer le cadre de la porte, et non pas la vitre intérieure, avec un joint entourant l'ouverture du four et la vitre intérieure est enchâssée dans le cadre de la porte. La porte utilisée dans ce premier type de four présente également l'avantage de conférer une très bonne isolation thermique au cadre par rapport à la vitre intérieure, laquelle vitre est le seul élément de la porte en contact avec le moufle du four. En effet, les ponts thermiques entre la vitre intérieure et le cadre sont limités aux entretoises ponctuelles, et l'espace existant entre la vitre et le cadre permet d'obtenir une ventilation de la vitre intérieure et du cadre. Lorsque ce premier type de four comporte une deuxième vitre extérieure, celle-ci est par exemple directement enchâssée dans le cadre de la porte. Dans ce cas, pour accéder à l'espace existant entre les deux vitres, notamment lors d'opérations de nettoyage, il est nécessaire de démonter la vitre intérieure en la désolidarisant complètement du cadre sur lequel elle est fixée. Une telle opération de démontage nécessite de l'outillage, est coûteuse en temps, et implique une manipulation de la vitre pouvant occasionner une brisure de celle- ci.There is already known, in particular from document FR 2 561 359, a first type of oven, the door of which comprises a frame and at least one internal window which is fixed directly to the door frame, being kept at a distance from the frame, by specific fastening means, of the screw or bolt type, acting as spacers. The tight closure of this first type of oven is obtained by directly applying the interior glass of the door to the oven muffle, by means of a seal. This seal can either be fixed on the periphery of the interior glass, or be fixed directly on the oven muffle. When the door is in the closed position, the interior window is effectively kept in position away from the door frame by the point spacers, which allows optimal sealing. This avoids the problem of leaks at the interior glass that is encountered in the doors of traditional ovens, in which the tight closing of the oven is obtained by making the door frame cooperate, and not the interior glass, with a seal surrounding the oven opening and the interior glass is embedded in the door frame. The door used in this first type of oven also has the advantage of providing very good thermal insulation to the frame with respect to the interior glass, which glass is the only element of the door in contact with the oven muffle. In fact, the thermal bridges between the interior glass and the frame are limited to point spacers, and the space existing between the glass and the frame makes it possible to obtain ventilation of the interior glass and of the frame. When this first type of oven has a second external window, this is for example directly embedded in the frame of the door. In this case, to access the space between the two panes, in particular during cleaning operations, it is necessary to disassemble the interior glass by completely detaching it from the frame on which it is fixed. Such a dismantling operation requires tools, is costly in time, and involves manipulation of the glass which may cause the glass to break.
On a par ailleurs déjà proposé, notamment dans le document GB 451 702, un deuxième type de four comportant une porte à double vitre, dans lequel l'une des deux vitres est montée pivotante par rapport au cadre de la porte, laquelle porte comporte en outre des moyens de fermeture de la vitre pivotante. Ces moyens de fermeture de la vitre pivotante sont à blocage et déblocage rapides et sont situés à l'opposé de l'axe de pivotement de la vitre. Ils permettent de bloquer la vitre pivotante dans une position où elle est parallèle et espacée de l'autre vitre. Dans l'exemple particulier décrit et illustré dans ce document GB 451 702, la vitre qui est montée pivotante est la vitre extérieure. Dans ce document, il est suggéré que la vitre pivotante puisse être la vitre intérieure. Pour des raisons évidentes de sécurité, cette deuxième solution est préférable, afin qu'on ne puisse pas ouvrir la vitre extérieure lorsque le four fonctionne, la porte étant fermée. La porte de ce four à double vitre décrit dans ce document présente l'avantage de permettre un accès rapide et aisé à l'espace situé entre les deux vitres, sans nécessiter de démontage de l'une des deux vitres. Néanmoins, cette porte est de type traditionnel en ce que la vitre intérieure n'est pas destinée à venir coopérer avec un joint d'étanchéité pour réaliser une fermeture étanche du four, contrairement au premier type de four précité. Cette porte de four ne présente donc pas les avantages des portes de fours du premier type précité. De plus, dans l'éventualité où la vitre intérieure est montée pivotante, celle ci se trouve située à l'intérieure du four lorsque la porte est fermée, ce qui entraîne une souillure importante des organes de pivotement et des moyens de fermeture à blocage et déblocage rapides de la vitre intérieure.A second type of oven has also been proposed, in particular in document GB 451 702, comprising a double-glazed door, in which one of the two panes is pivotally mounted relative to the frame of the door, which door comprises in besides means for closing the pivoting window. These closing means of the pivoting window are quick to lock and unlock and are located opposite the pivot axis of the window. They allow the pivoting window to be locked in a position where it is parallel and spaced from the other window. In the particular example described and illustrated in this document GB 451 702, the pane which is pivotally mounted is the outer pane. In this document, it is suggested that the pivoting window may be the interior window. For obvious safety reasons, this second solution is preferable, so that the exterior window cannot be opened when the oven is operating, the door being closed. The door of this double-glazed oven described in this document has the advantage of allowing quick and easy access to the space between the two panes, without requiring disassembly of one of the two panes. However, this door is of the traditional type in that the inner glass is not intended to come to cooperate with a seal to achieve a sealed closure of the oven, unlike the first type of oven mentioned above. This oven door therefore does not have the advantages of oven doors of the first type mentioned above. In addition, in the event that the interior window is pivotally mounted, it is located inside the oven when the door is closed, which causes significant contamination of the pivoting members and locking means with locking and quick release of the interior window.
Le but que s'est fixé le demandeur est de proposer une porte de four à deux vitres qui d'une part comporte une vitre intérieure montée pivotante par rapport au cadre, en sorte de permettre un accès rapide et aisé à l'espace entre les deux vitres, mais qui d'autre part présente également tous les avantages de fermeture étanche et d'isolation thermique des portes de four du premier type. De manière connue par le document GB 451 702 la porte de four comporte :The goal that the applicant has set is to propose an oven door to two panes which on the one hand has an inner pane pivotally mounted relative to the frame, so as to allow quick and easy access to the space between the two panes, but which also has all the advantages of sealing and thermal insulation of oven doors of the first type. In a manner known from document GB 451 702 the oven door comprises:
- un cadre sur lequel sont montées deux vitres qui sont parallèles et espacées l'une de l'autre, dont l'une intérieure est montée pivotante par rapport au cadre, au moyen d'une pièce charnière, - et des moyens de fermeture à blocage et déblocage rapides, qui sont situés à l'opposé de l'axe de pivotement de la vitre intérieure , et qui permettent le maintien de la vitre intérieure en position fermée par rapport au cadre.- a frame on which are mounted two panes which are parallel and spaced from each other, one of which is pivotally mounted relative to the frame, by means of a hinge piece, - and closing means quick locking and unlocking, which are located opposite the pivot axis of the interior window, and which allow the interior window to be kept in the closed position relative to the frame.
Selon l'invention, les moyens de fermeture consistent en une ou plusieurs entretoises ponctuelles de fermeture à blocage et déblocage rapides, qui permettent de maintenir à distance la vitre intérieure par rapport à la face interne du cadre, lorsque la vitre intérieure est fermée ; la pièce charnière comporte au moins une plaque et la vitre intérieure est fixée à distance de ladite plaque par au moins une entretoise ponctuelle de fixation, de telle sorte que ladite plaque vient s'appliquer et prendre appui sur la face interne du cadre, lorsque la vitre intérieure est en position fermée.According to the invention, the closing means consist of one or more quick-closing closing spacers with quick locking and unlocking, which make it possible to keep the inner window at a distance relative to the inner face of the frame, when the inner window is closed; the hinge part comprises at least one plate and the internal window is fixed at a distance from said plate by at least one point fixing spacer, so that said plate is applied and supported on the internal face of the frame, when the inner window is in the closed position.
Selon une variante préférée, une extrémité de chaque entretoise ponctuelle de fixation traverse de part et d'autre chaque plaque correspondante de la pièce charnière, et la face interne du cadre comporte une ouverture pour le passage de ladite extrémité, de manière à ce que chaque plaque de la pièce charnière vienne parfaitement s'appliquer et se positionner contre ladite face interne du cadre. Cette variante permet avantageusement d'obtenir un positionnement toujours identique de la vitre intérieure en position fermée par rapport à la face interne du cadre de la porte, et par là-même de la vitre intérieure par rapport au moufle du four.According to a preferred variant, one end of each point fixing spacer crosses on either side each corresponding plate of the hinge part, and the internal face of the frame has an opening for the passage of said end, so that each plate of the hinge part is applied perfectly and positioned against said internal face of the frame. This variant advantageously makes it possible to obtain an always identical positioning of the interior glass in the closed position with respect to the internal face of the door frame, and therefore of the interior glass with respect to the oven muffle.
D'autres caractéristiques et avantages de l'invention ressortiront de la description suivante d'un mode particulier de réalisation d'une porte de four de l'invention, donnée à titre d'exemple non limitatif, et en référence aux dessins annexés sur lesquels :Other characteristics and advantages of the invention will emerge from the Following description of a particular embodiment of an oven door of the invention, given by way of nonlimiting example, and with reference to the appended drawings in which:
- la figure 1 est une vue de dessus d'une porte de four de l'invention, - la figure 2 est une vue de face de la porte de la figure 1,- Figure 1 is a top view of an oven door of the invention, - Figure 2 is a front view of the door of Figure 1,
- la figure 3 est une vue en coupe selon le plan AA d'une entretoise ponctuelle de fermeture de la porte de la figure 1,FIG. 3 is a sectional view along the plane AA of a punctual spacer for closing the door of FIG. 1,
- la figure 4 est une vue en coupe selon le plan BB d'une entretoise ponctuelle de fixation de la porte de four de la figure 1, - la figures 5A est une vue de face de la pièce permettant la fixation de la pièce charnière sur le cadre de la porte de la figure 1,- Figure 4 is a sectional view along the plane BB of a point spacer for fixing the oven door of Figure 1, - Figures 5A is a front view of the part for fixing the hinge part on the frame of the door of FIG. 1,
- la figure 5B est une vue en coupe selon le plan CC de la pièce de la figure 5A,FIG. 5B is a sectional view along the plane CC of the part in FIG. 5A,
- la figure 6A est une vue de face de la pièce charnière de la porte de la figure- Figure 6A is a front view of the hinge part of the door of Figure
1, - et la figure 6B est une vue en coupe selon le plan DD de la pièce charnière de la figure 6A.1, - and Figure 6B is a sectional view along the plane DD of the hinge part of Figure 6A.
La porte de four 1 de l'invention qui est représentée à la figure 1 comporte un cadre 2 métallique creux, de forme sensiblement rectangulaire, sur lequel sont montées parallèles une vitre extérieure 3 et une vitre intérieure 4. La vitre extérieure 3 est enchâssée directement dans le cadre 2. La vitre intérieure 4 est fixée et maintenue à distance de la face interne 2a du cadre 2, de manière d'une par à isoler thermiquement la vitre extérieure 3 et le cadre 2, de la vitre intérieure 4, et d'autre part à laisser entre le cadre 2 et la vitre intérieure 4 un espace 5, qui est suffisamment important pour faire office de couloir de ventilation, par convection naturelle de l'air ambiant. Lorsque la porte 1 équipe un four (non représenté), elle est montée pivotante selon un axe de pivotement la vertical. Dans ce cas, lorsque la porte est fermée, la vitre extérieure 3 fait face à l'utilisateur du four ; la vitre intérieure 4 vient s'appliquer contre le moufle du four, de manière à assurer la fermeture étanche de celui-ci, par l'intermédiaire d'un joint d'étanchéité entourant l'ouverture du moufle four.The oven door 1 of the invention which is shown in Figure 1 has a hollow metal frame 2, of substantially rectangular shape, on which are mounted parallel an outer window 3 and an inner window 4. The outer window 3 is directly embedded in the frame 2. The inner window 4 is fixed and kept at a distance from the internal face 2a of the frame 2, so as to thermally insulate the outer window 3 and the frame 2, from the inner window 4, and d on the other hand to leave between the frame 2 and the interior window 4 a space 5, which is large enough to act as a ventilation corridor, by natural convection of the ambient air. When the door 1 equips an oven (not shown), it is pivotally mounted along a vertical pivot axis. In this case, when the door is closed, the external window 3 faces the user of the oven; the inner glass 4 is applied against the muffle of the oven, so as to ensure the tight closure thereof, by means of a seal surrounding the opening of the oven muffle.
La porte de four 1 comporte une pièce charnière 6, qui est montée pivotante sur la face interne 2a du cadre 2, selon un axe de pivotement lb, qui est dans l'exemple particulier de la figure 1 parallèle à l'axe de pivotement la de la porte 1 ; la vitre intérieure 4 est fixée, d'une part directement à la face interne 2a du cadre 2, par deux entretoises ponctuelles de fermeture 7, à blocage et déblocages rapides qui sont situés à l'opposé de l'axe de pivotement lb, et d'autre part à la pièce charnière 6 par deux entretoises ponctuelles de fixation 8.The oven door 1 comprises a hinge part 6, which is pivotally mounted on the internal face 2a of the frame 2, along a pivot axis lb, which is in the particular example of FIG. 1 parallel to the pivot axis la from door 1; the internal window 4 is fixed, on the one hand directly to the internal face 2a of the frame 2, by two point closing spacers 7, with quick locking and unlocking which are located opposite the pivot axis 1b, and on the other hand to the hinge part 6 by two punctual fixing spacers 8.
Tel que cela apparait aux figure 2 et 3, chaque entretoise ponctuelle de fermeture 7 comprend un ensemble bague de verrouillage 12 / vis quart de tour 13. Les deux vis quart de tour 13 sont fixées à travers la vitre intérieure 4, à proximité respectivement des deux angles de cette vitre qui sont opposés à l'axe de pivotement lb. Les deux bagues de verrouillage 12 sont des clips pour vis quart de tour, qui sont fixés directement sur la face interne 2a du cadre 2, de manière à ce que chaque vis quart de tour 13 vienne s'emboîter dans la bague de verrouillage 12 correspondante, lorsque la vitre intérieure est en position fermée, tel que cela est représenté à la figure 1. Chaque ensemble bague de verrouillage 12 / vis quart de tour 13 comprend également un joint d'étanchéité 14, en caoutchouc. Ce joint en caoutchouc 14 entoure la vis quart de tour 13 correspondante et passe à travers la vitre intérieure 4, de telle sorte qu'il vient prendre appui sur la face interne 2a du cadre 2 lorsque la vitre intérieure 4 est fermée (figure 3). Sa fonction est donc d'une part d'assurer l'étanchéité au niveau du passage de la vis quart de tour 13 à travers la vitre intérieure 4, et d'autre part de servir d'entretoise entre la face interne 2a du cadre 2 et la vitre intérieure 4. Si l'on se réfère aux figures 6A et 6B, la pièce charnière 6 consiste en une tige métallique 9, aux deux extrémités de laquelle sont fixées dans un même plan, par exemple par soudage, deux plaque 10 identiques, de forme rectangulaire et de faible largeur par rapport à la longueur de la tige 9. La tige 9 de la pièce charnière 6 de la porte 1 est montée pivotante selon l'axe de pivotement lb, par l'intermédiaire de la pièce 11 des figures 5A et 5B. Cette pièce 11 comporte une partie plane 1 la qui est destinée à être fixée sur la face interne 2a du cadre 2, au moyens de trois vis, et une partie 1 lb, qui a al forme d'une gouttière un V (figure 5B), et qui est destinée à servir de logement à la tige 9 de la pièce charnière 6, lorsque ladite pièce 11 est fixée sur le cadre 2.As shown in FIGS. 2 and 3, each point closing spacer 7 comprises a locking ring 12 / quarter-turn screw 13 assembly. The two quarter-turn screws 13 are fixed through the interior glass 4, respectively near the two angles of this window which are opposite to the pivot axis lb. The two locking rings 12 are clips for quarter-turn screws, which are fixed directly to the internal face 2a of the frame 2, so that each quarter-turn screw 13 comes to fit in the corresponding locking ring 12 , when the interior window is in the closed position, as shown in FIG. 1. Each locking ring 12 / quarter-turn screw 13 assembly also includes a seal 14, made of rubber. This rubber seal 14 surrounds the corresponding quarter-turn screw 13 and passes through the interior window 4, so that it comes to bear on the internal face 2a of the frame 2 when the interior window 4 is closed (FIG. 3) . Its function is therefore on the one hand to ensure sealing at the level of the passage of the quarter-turn screw 13 through the interior glass 4, and on the other hand to serve as a spacer between the internal face 2a of the frame 2 and the inner glass 4. If reference is made to FIGS. 6A and 6B, the hinge part 6 consists of a metal rod 9, at the two ends of which are fixed in the same plane, for example by welding, two identical plates 10 , of rectangular shape and of small width compared to the length of the rod 9. The rod 9 of the hinge part 6 of the door 1 is pivotally mounted along the pivot axis lb, by through part 11 of FIGS. 5A and 5B. This part 11 comprises a flat part 1 la which is intended to be fixed on the internal face 2a of the frame 2, by means of three screws, and a part 1 lb, which has the shape of a gutter a V (FIG. 5B) , and which is intended to serve as a housing for the rod 9 of the hinge part 6, when said part 11 is fixed to the frame 2.
Tel que cela apparaît aux figures 2 et 4 , les deux entretoises ponctuelles de fixation 8 consistent en deux vis 15, qui passent à travers la vitre intérieure 4 et respectivement chaque plaque 10 de la pièce charnière 6. Au niveau de chaque vis 15 est en outre prévu un joint d'étanchéité 17, en caoutchouc. Sur la face interne 2a du cadre 2, au niveau de chacune des deux plaques 10 de la pièce charnière 6, a été pratiquées une ouverture 16, afin de permettre le passage de l'extrémité 15a de chaque vis 15, qui est située à de l'autre coté de la plaque 10, par rapport à la vitre intérieure 4. Ainsi, lorsque la vitre intérieure 4 est en position fermée (figure 1), les plaques 10 vient parfaitement s'appliquer et prendre appui sur toute leur surface, contre la face interne 2a du cadre 2 de la porte 1, et la vitre intérieure 4 est toujours correctement positionnée par rapport au cadre 2. De la sorte, s'agissant d'un four qui est équipé avec la porte 1 et dont la fermeture est assurée part la vitre intérieure 4 qui coopère avec un joint d'étanchéité fixé soit sur le pourtour de la vitre, soit sur le pourtour de l'ouverture du four, la vitre intérieure 4 est toujours correctement positionnée par rapport à ce joint d'étanchéité, et vient parfaitement s'appliquer contre celui-ci, lorsque la porte 1 est en position fermée, ce qui permet obtenir une fermeture étanche optimale du four.As shown in Figures 2 and 4, the two point fixing spacers 8 consist of two screws 15, which pass through the inner glass 4 and respectively each plate 10 of the hinge part 6. At each screw 15 is in further provided a rubber seal 17. On the internal face 2a of the frame 2, at each of the two plates 10 of the hinge part 6, an opening 16 has been made, in order to allow the passage of the end 15a of each screw 15, which is located at the other side of the plate 10, with respect to the interior glass 4. Thus, when the interior glass 4 is in the closed position (FIG. 1), the plates 10 are applied perfectly and bear on their entire surface, against the inner face 2a of the frame 2 of the door 1, and the inner window 4 is always correctly positioned relative to the frame 2. In this way, being an oven which is equipped with the door 1 and the closure of which is provided by the inner glass 4 which cooperates with a seal fixed either on the periphery of the glass or on the periphery of the opening of the oven, the internal glass 4 is always correctly positioned with respect to this seal , and is perfectly applied with be this, when the door 1 is in the closed position, which makes it possible to obtain an optimum tight closure of the oven.
La porte de l'invention permet également d'obtenir une très bonne isolation thermique de la vitre extérieure 3 et du cadre 2 par rapport à la vitre intérieur 4 . Dans le cas de la porte 1 qui a été décrite, cette isolation thermique est augmentée par le fait que le nombre des points de contact entre la vitre intérieure 4 et la face interne 2a du cadre 2 a été limité à quatre, et que la surface de chacun de ces points de contact a été volontairement choisie la plus faible possible, notamment s'agissant de la surface des plaques 10. Pour accéder à l'espace situé entre les deux vitres 3 et 4, il suffit de débloquer les deux vis 13, en les faisant tourner d'un quart de tour, puis d'ouvrir la vitre intérieure 4 en la faisant pivoter dans le sens de la flèche F (figure 1), autour de l'axe de pivotement lb. Il n'est donc plus nécessaire, de démonter complètement la vitre intérieure 4. Les opérations de nettoyage des faces internes des deux vitres 3 et 4 et de l'intérieur du cadre 2 s'en trouve facilitées. En outre, lorsque cet espace sert de logement à l'éclairage du four, tel que cela est illustré à la figure 2 par les lampes 17, il est possible d'effectuer très rapidement le changement d'une lampe qui ne fonctionne plus. Pour refermer la vitre intérieure 3, il suffit de la faire pivoter dans le sens inverse de la flèche F, jusqu'à ce que les plaques 10 prennent appui sur le cadre 2, et que les vis 13 soient emboîtées dans leur bague de verrouillage 12, puis de bloquer les vis 13, en les faisant à nouveau tourner d'un quart de tour, dans le sens opposé à celui du déblocage, la vitre est alors opérationnelle pour assurer la fermeture étanche du four sur lequel est montée la porte 1.The door of the invention also makes it possible to obtain very good thermal insulation of the external glass 3 and of the frame 2 with respect to the internal glass 4. In the case of door 1 which has been described, this thermal insulation is increased by the fact that the number of points of contact between the internal glass 4 and the internal face 2a of the frame 2 has been limited to four, and that the surface of each of these contact points was deliberately chosen to be as small as possible, in particular with regard to the surface of the plates 10. To access the space between the two panes 3 and 4, simply unblock the two screws 13, by turning them a quarter of a turn, then open the inner pane 4 by rotating it in the direction of the arrow F (FIG. 1), around the pivot axis lb. It is therefore no longer necessary to completely disassemble the interior window 4. The cleaning operations of the internal faces of the two windows 3 and 4 and of the interior of the frame 2 are thereby facilitated. In addition, when this space serves as a housing for the lighting of the oven, as illustrated in FIG. 2 by the lamps 17, it is possible to very quickly change a lamp which no longer works. To close the inner window 3, it is sufficient to rotate it in the opposite direction to the arrow F, until the plates 10 are supported on the frame 2, and the screws 13 are fitted in their locking ring 12 , then to lock the screws 13, by turning them again by a quarter of a turn, in the opposite direction to that of the unlocking, the window is then operational to ensure the watertight closing of the oven on which the door 1 is mounted.
L'invention n'est pas limitée à la description d'un mode particulier de réalisation qui vient d'être faite à titre d'exemple non limitatif. On pourrait notamment concevoir une pièce charnière de forme différente, et constituée par exemple d'une seule plaque remplaçant les deux plaques 10 de faible dimension et s'étendant sur toute la longueur de la tige 9. On pourrait également utiliser un plus grand nombre de vis 15 ou d' ensembles bague de verrouillage / vis quart de tour , sans pour autant sortir du cadre de l'invention. L'axe de pivotement de la vitre intérieure peut éventuellement être horizontal. The invention is not limited to the description of a particular embodiment which has just been given by way of nonlimiting example. One could in particular design a hinge part of different shape, and consisting for example of a single plate replacing the two small plates 10 and extending over the entire length of the rod 9. One could also use a greater number of screws 15 or sets of locking rings / quarter-turn screws, without departing from the scope of the invention. The pivot axis of the interior window may possibly be horizontal.

Claims

REVENDICATIONS
1. Porte de four (1) comportant :1. Oven door (1) comprising:
- un cadre (2) sur lequel sont montées deux vitres (3,4) qui sont parallèles et espacées l'une de l'autre, dont l'une (4) intérieure (4) est montée pivotante par rapport au cadre (2) au moyen d'une pièce charnière,- a frame (2) on which are mounted two panes (3,4) which are parallel and spaced from each other, one of which (4) inside (4) is pivotally mounted relative to the frame (2 ) by means of a hinge piece,
- et des moyens de fermeture à blocage et déblocage rapides, qui sont situés à l'opposé de l'axe de pivotement (lb) de la vitre intérieure (4), et qui permettent le maintien de la vitre intérieure (4) en position fermée par rapport au cadre (2), caractérisée en ce que les moyens de fermeture consistent en une ou plusieurs entretoises ponctuelles de fermeture (7) à blocage et déblocage rapides, qui permettent de maintenir à distance la vitre intérieure (4) par rapport à la face interne (2a) du cadre (2), lorsque la vitre intérieure est fermée, en ce que la pièce charnière (6) comporte au moins une plaque (10), et en ce que la vitre intérieure est fixée à distance de ladite plaque (10) par au moins une entretoise ponctuelle de fixation (8), de teile sorte que ladite plaque (10) vient s'appliquer et prendre appui sur la face interne du cadre (2), lorsque la vitre intérieure est en position fermée.- And fast locking and unlocking closing means, which are located opposite the pivot axis (lb) of the interior window (4), and which allow the interior window (4) to be held in position closed relative to the frame (2), characterized in that the closing means consist of one or more specific closing spacers (7) with rapid locking and unlocking, which make it possible to keep the inner window (4) at a distance from the internal face (2a) of the frame (2), when the internal window is closed, in that the hinge part (6) comprises at least one plate (10), and in that the internal window is fixed at a distance from said plate (10) by at least one point fixing spacer (8), in such a way that said plate (10) is applied and supported on the internal face of the frame (2), when the internal window is in the closed position .
2. Porte de four selon la revendication 1 caractérisée en ce que la pièce charnière (6) comporte au moins deux plaques (10) de faible dimension, et en ce que la vitre intérieure (4) est fixé à chaque plaque (10) au moyen d'une unique entretoise ponctuelle de fixation (8).2. Oven door according to claim 1 characterized in that the hinge part (6) comprises at least two plates (10) of small size, and in that the inner glass (4) is fixed to each plate (10) at by means of a single point fixing spacer (8).
3. Porte de four selon la revendication 1 ou 2 caractérisée en ce qu'une extrémité (15a) de chaque entretoise ponctuelle de fixation (8) traverse de part et d'autre chaque plaque (10) correspondante de la pièce charnière (6), et en ce que la face interne (2a) du cadre (2) comporte une ouverture (16) pour le passage de ladite extrémité (15a), en sorte que chaque plaque (10) de la pièce chamière(6) vient parfaitement s'appliquer et se positionner contre ladite face interne du cadre (2).3. Oven door according to claim 1 or 2 characterized in that one end (15a) of each point fixing spacer (8) passes on either side each plate (10) corresponding to the hinge part (6) , and in that the internal face (2a) of the frame (2) has an opening (16) for the passage of said end (15a), so that each plate (10) of the camber part (6) comes perfectly s 'apply and position against said inner face of the frame (2).
4. Porte de four selon l'une quelconque des revendications 1 à 3 caractérisée en ce que chaque entretoise ponctuelle de fermeture (7) comprend une bague de verrouillage (12), du type clips, qui est fixée sur le cadre (2) de la porte, et une vis quart de tour (13) qui est solidaire de la vitre intérieure (4) en sorte de venir coopérer avec la bague de verrouillage (12) lorsque la vitre intérieure (4) est en position fermée. 4. Oven door according to any one of claims 1 to 3 characterized in that each point closing spacer (7) comprises a ring of locking (12), of the clips type, which is fixed to the frame (2) of the door, and a quarter-turn screw (13) which is integral with the internal glass (4) so as to come to cooperate with the ring locking (12) when the interior window (4) is in the closed position.
EP94915194A 1993-04-29 1994-04-29 Oven door Withdrawn EP0647305A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9305315 1993-04-29
FR9305315A FR2705765B1 (en) 1993-04-29 1993-04-29 Oven door.
PCT/FR1994/000496 WO1994025802A1 (en) 1993-04-29 1994-04-29 Oven door

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EP0647305A1 true EP0647305A1 (en) 1995-04-12

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EP94915194A Withdrawn EP0647305A1 (en) 1993-04-29 1994-04-29 Oven door

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US (1) US5546927A (en)
EP (1) EP0647305A1 (en)
JP (1) JPH08502344A (en)
FR (1) FR2705765B1 (en)
WO (1) WO1994025802A1 (en)

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Also Published As

Publication number Publication date
FR2705765B1 (en) 1995-08-18
JPH08502344A (en) 1996-03-12
US5546927A (en) 1996-08-20
FR2705765A1 (en) 1994-12-02
WO1994025802A1 (en) 1994-11-10

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