FR2571931A1 - Device for baking oven with system of propellers and deflectors therefor - Google Patents

Device for baking oven with system of propellers and deflectors therefor Download PDF

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Publication number
FR2571931A1
FR2571931A1 FR8416233A FR8416233A FR2571931A1 FR 2571931 A1 FR2571931 A1 FR 2571931A1 FR 8416233 A FR8416233 A FR 8416233A FR 8416233 A FR8416233 A FR 8416233A FR 2571931 A1 FR2571931 A1 FR 2571931A1
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FR
France
Prior art keywords
shaft
propeller
deflectors
oven
fixing
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
FR8416233A
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French (fr)
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FR2571931B1 (en
Inventor
Jean Voigt
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VOIGT FILS
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VOIGT FILS
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Filing date
Publication date
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Priority to FR8416233A priority Critical patent/FR2571931B1/en
Publication of FR2571931A1 publication Critical patent/FR2571931A1/en
Application granted granted Critical
Publication of FR2571931B1 publication Critical patent/FR2571931B1/en
Expired legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/32Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • AHUMAN NECESSITIES
    • A21BAKING; EDIBLE DOUGHS
    • A21BBAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
    • A21B1/00Bakers' ovens
    • A21B1/02Bakers' ovens characterised by the heating arrangements
    • A21B1/24Ovens heated by media flowing therethrough
    • A21B1/26Ovens heated by media flowing therethrough by hot air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/263Rotors specially for elastic fluids mounting fan or blower rotors on shafts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The subject of the invention is a device for a baking oven fitted with a light, easy-to-replace sheet-metal fan system mounted on a shaft constructed in two parts welded together. Then machined on a lathe. Referring to Fig. 1, the fan 1 and the shaft on which it is mounted can be seen. In Fig. 2, the interior of the oven fitted with the fan and with its deflectors 9, 8, 10, 14. The part 4 of the shaft passing through the thermally insulated areas 25 and then the machined parts 2 taking the bearings 23, 15 pulley driving the unit clamped around the cross section 3 of the shaft.

Description

La présente invention a pour objet à titre de produit indus triel nouveau un dispes@tif de four pour cuire le pain et patisserie. Ce dispositif est remarquable en ce qu'il oom- porte une hélice avec déflecteurs d'air apportant des perfectionn ments par rapport aux techniques semblables existantes.The subject of the present invention is, as a new industrial product, an oven device for baking bread and pastry. This device is remarkable in that it has a propeller with air deflectors providing improvements over existing similar techniques.

Se retrouvant essentiellement dan.s la conception de l'hélice t l'arbre en deux éléments sur lequel elle se fixe, et les dé- flecteurs adoptant le rendement de l'hélice à l'enceinte du four. Une forme d'éxécution de l'invention estdéorite ci-aprés à titre indicatif et nullement limitatif, en se référant aux dessins annexés. ta figure 2 représente l'interieur du four le de@sus étant enlevé. La figure 9 l'hélice. La figure 4 une des deux pièces composant l'arbre de l'hélice. La figure 5 le cache se plaçant an bout d'hélice. La figure 6 démontre la circulation de l'air à l'interieur du four, et le déflec- teur circulaire (virole entourant l'héliee).Figurel ledétail de l'arbre d'hélice avec l'hélice se montant en bout de cet arbre. L'hélice 1 est eu tole d'alliage léger. La forme cir- culaire définitive déterminant le bord périohérique des pales est obtenue par tournage. Les 12 pales de e l'hélice sont ob- tenues par découpage. Une légère incurvation est donnée au moment du découpage sur la face des pales poussant l'air, intrados, le pas optimum de chacune des pales 370, s'obtient en vrillant la tole dana la zone se situant entre 22 et 13. Mainly found in the design of the propeller and the two-element shaft on which it is fixed, and the deflectors adopting the efficiency of the propeller inside the oven. A form of execution of the invention is described below by way of indication and in no way limiting, with reference to the accompanying drawings. your Figure 2 shows the interior of the oven the @ @ being removed. Figure 9 the propeller. Figure 4 one of the two parts making up the propeller shaft. Figure 5 the cover is placed at the end of the propeller. Figure 6 shows the air circulation inside the oven, and the circular deflector (ferrule surrounding the propeller). Figure of the detail of the propeller shaft with the propeller mounting at the end of this tree. The propeller 1 is made of light alloy sheet. The final circular shape determining the periherical edge of the blades is obtained by turning. The 12 blades of the propeller are obtained by cutting. A slight curvature is given at the time of cutting on the face of the blades pushing the air, intrados, the optimum pitch of each of the blades 370, is obtained by twisting the sheet in the zone lying between 22 and 13.

On voit les troua 19 permettant par des vis la fixation de l'hélice sur l'arbre. Le cerole en pointillé 20 indique où prend appuile cache 12 se fixant par son centre en bout d'arbre avec une vis se vissant dans le taraudage 16. La pièce 5 comprend la partie 7 fraisé conique (chamfrein) permettant son assemblage par soudure électrique sur la partie en bout d'arbre réduite b cet effet. La pièce 5 est à l'état d'ébauche au moment de cet assemblage, son usinage définitif steffectuant au cours des opérations de tournage des épaulements 2-3-4 aue comporte l'arbre. Lapârtie réduite de l'arbre 3 reçoit une poulie entrainant l'arbre d'hélice. We see the holes 19 allowing by screws the fixing of the propeller on the shaft. The dotted line 20 indicates where the hiding pin 12 takes hold, fixing itself by its center at the end of the shaft with a screw screwed into the internal thread 16. The part 5 comprises the countersunk part 7 (chamfer) allowing its assembly by electrical welding the end of the tree reduced to this effect. The part 5 is in the draft state at the time of this assembly, its final machining effecting during the operations of turning the shoulders 2-3-4 aue comprises the shaft. The reduced part of the shaft 3 receives a pulley driving the propeller shaft.

La portion d'arbre 2 permet le montage de l'ensemble arbre et hélicesur des palliers auto-alligneurs 23. La section renforcés 4 est utilisée en porte à faux pour traverserles zones calorifugées 25 du four. 6 est une des parties essentielles du dispositif, il s'agit du centrage de l'hélioe par son alesage 18 obtenu dans la tole por poinçon et matrice, centrage trés précis qui perset le remplacement de l'hélice en peu de temps sana alé@@ d'équilibrage. La pièce 5 comporte six trous taraudés 24 correspondant au perçage 19 de l'héli- ce. Figure 2 17 représent@ la porte du four.La répartition do l'air ans l'enceinte utilisée poWr la ouisson se fait par les volets 14. L'air est repris, au travera de la grille de répar- tition 9 formée de trous oblong, par l'hélice 1 et sa virole 8 (renforcée par une nervure obtenue par molettage). A la sortie de llhélice l'air est canalisé par 1. déflecteur vertical 10 Tors les résistances 11 où tout autre moyen de chauffage et les volets 14. Le déflecteur vertical 10@est réalisé en tole inoxydable, son pliage permettant d'obtenir le résultat cherché et conforme au destin.The shaft portion 2 allows the assembly of the shaft and propeller assembly on self-aligning bearings 23. The reinforced section 4 is used cantilevered to pass through the heat-insulated zones 25 of the oven. 6 is one of the essential parts of the device, it is the centering of the helioe by its bore 18 obtained in the sheet metal for punch and die, very precise centering which persets the replacement of the propeller in a short time sana random @ @ balancing. The part 5 comprises six tapped holes 24 corresponding to the bore 19 of the propeller. Figure 2 17 shows @ the oven door. The distribution of air in the enclosure used for winding is done by the flaps 14. The air is taken in, through the distribution grid 9 formed of holes oblong, by the propeller 1 and its ferrule 8 (reinforced by a rib obtained by knurling). At the outlet of the propeller the air is channeled by 1. vertical deflector 10 As the resistors 11 where any other heating means and the flaps 14. The vertical deflector 10 @ is made of stainless steel, its folding allowing the result to be obtained sought and consistent with fate.

Il est bien entendu que la pr@@ente réalisation n'est pas limitée au mode de réalisation décrit et représenté, il oonsl titue seulement un exemple auquel de nombreuses modifications peuvent être apportées sans que l'on s'écarte de la présente invention. It is understood that the pr @@ ente embodiment is not limited to the embodiment described and shown, it oonsl titue only one example to which many modifications can be made without departing from the present invention.

Claims (3)

R E V E N D I C A T I O N S 10- Dispositif de four pour boulangerie avec système dUhélice légère de remplacement rapide se montant sur un arbre construit en deux parties. Ce système comporte des déflecteurs donnant à l'ensemble un rendement élevé. 20- Dispositif selon les revendications 1, ce disposot@f se caractérise par l'hélice d'une seule pièce fuite à partir d'une tole d'alliage léger comportant 12 pales obtenues par décou- page, d'un arbre en deux parties assemblées par soudure éleotrique. Cet arbre comporte une partie aveo des trous taraudés permettant la fixation de l'hélice.R E V E N D I C A T I O N S 10- Bakery oven device with quick-change light helix system mounted on a tree built in two parts. This system includes deflectors giving the assembly a high efficiency. 20- Device according to claims 1, this device @ f is characterized by the single-piece propeller leaking from a sheet of light alloy comprising 12 blades obtained by cutting, from a shaft in two parts assembled by electrical welding. This shaft has a part with threaded holes for fixing the propeller. 3 - Selon la revendication 2, à partir des 12 pales découpées le pas de l'hélice 370 s'obtient en vrillant la tole. Une incurvation de la face prenant appui sur l'air, intrados, améliore le rendement. Des trous de fixation sont prévus pour la fixation de l'hélice sur l'arbre.3 - According to claim 2, from the 12 blades cut the pitch of the propeller 370 is obtained by twisting the sheet. A curvature of the face resting on the air, lower surface, improves the yield. Fixing holes are provided for fixing the propeller on the shaft. 40- Selon revendications 2, l'arbrecomporte des épaulements pour le montage d'une poulie d'entrainement, munir l'arbre de palliers auto-alligneurst traverser les zones calorifugées de l'arrière du four par une partie de l'arbre renforcée à cet effet, et se trouvant en porte à faux pour la dite traversée. 40- According to claims 2, the shaft has shoulders for mounting a drive pulley, provide the shaft of self-aligning bearings cross the insulated areas of the rear of the oven by a part of the shaft reinforced to this effect, and being cantilevered for the said crossing. 5 O Selon revendication 3, le centrage de l'hélice se fait par un trou oentral de précision.5 O According to claim 3, the centering of the propeller is done by a precision central hole. 6 - Selon revendication 4, l'arbre comporte du côté où se fixe l'hélice, un épaulement de précision afin de centrer celle-ci.6 - According to claim 4, the shaft comprises on the side where the propeller is fixed, a precision shoulder in order to center the latter. 70 Selon revendication 1, la forme et disposition des déflecteurs d'air (9-8-10-14 figure 2) entourant l'hélice, permettent @'obtenir le rendement élevé du dispositif. 70 According to claim 1, the shape and arrangement of the air deflectors (9-8-10-14 Figure 2) surrounding the propeller, allow @ 'obtain the high efficiency of the device. 8 - Selon revendication 1, plusieurs hélices peuvent équiper un même four . L'entrainement pouvant venir d1un seul moteur avec ses jeux de courroies y convenant. 8 - According to claim 1, several propellers can equip the same oven. The drive can come from a single motor with its sets of belts suitable for it.
FR8416233A 1984-10-22 1984-10-22 OVEN DEVICE FOR BAKERY WITH PROPELLER SYSTEM AND ITS DEFLECTORS Expired FR2571931B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8416233A FR2571931B1 (en) 1984-10-22 1984-10-22 OVEN DEVICE FOR BAKERY WITH PROPELLER SYSTEM AND ITS DEFLECTORS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8416233A FR2571931B1 (en) 1984-10-22 1984-10-22 OVEN DEVICE FOR BAKERY WITH PROPELLER SYSTEM AND ITS DEFLECTORS

Publications (2)

Publication Number Publication Date
FR2571931A1 true FR2571931A1 (en) 1986-04-25
FR2571931B1 FR2571931B1 (en) 1988-04-15

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Family Applications (1)

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FR8416233A Expired FR2571931B1 (en) 1984-10-22 1984-10-22 OVEN DEVICE FOR BAKERY WITH PROPELLER SYSTEM AND ITS DEFLECTORS

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1390542A (en) * 1920-03-03 1921-09-13 James J Reid Heating and baking structure
GB855029A (en) * 1958-09-05 1960-11-30 Denholm Andrew Improvements in or relating to ovens heated by hot air
FR1592286A (en) * 1968-11-08 1970-05-11
GB1247807A (en) * 1969-11-24 1971-09-29 Brdr Jorgensen S Mekaniske Vae Improvements in and relating to ovens having an oven space for accommodating an oven trolley
FR2215551A1 (en) * 1973-01-25 1974-08-23 Grundfos As
US4036562A (en) * 1975-06-30 1977-07-19 Barnes Jack H Food dehydrator and fan therefor
EP0096159A2 (en) * 1982-06-09 1983-12-21 Lincoln Foodservice Product, Inc. Impingement food preparation apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1390542A (en) * 1920-03-03 1921-09-13 James J Reid Heating and baking structure
GB855029A (en) * 1958-09-05 1960-11-30 Denholm Andrew Improvements in or relating to ovens heated by hot air
FR1592286A (en) * 1968-11-08 1970-05-11
GB1247807A (en) * 1969-11-24 1971-09-29 Brdr Jorgensen S Mekaniske Vae Improvements in and relating to ovens having an oven space for accommodating an oven trolley
FR2215551A1 (en) * 1973-01-25 1974-08-23 Grundfos As
US4036562A (en) * 1975-06-30 1977-07-19 Barnes Jack H Food dehydrator and fan therefor
EP0096159A2 (en) * 1982-06-09 1983-12-21 Lincoln Foodservice Product, Inc. Impingement food preparation apparatus

Also Published As

Publication number Publication date
FR2571931B1 (en) 1988-04-15

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