Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J27/00—Cooking-vessels
  • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
  • A47J27/0804—Locking devices
  • A47J27/0806—Locking devices of the bayonet-type
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J27/00—Cooking-vessels
  • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
  • A47J27/0804—Locking devices
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J27/00—Cooking-vessels
  • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16J—PISTONS; CYLINDERS; SEALINGS
  • F16J15/00—Sealings
  • F16J15/02—Sealings between relatively-stationary surfaces
  • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S220/00—Receptacles
  • Y10S220/912—Cookware, i.e. pots and pans

Definitions

• the present invention relates to the general technical field of apparatus for cooking food under pressure in an atmosphere charged with steam, such as pressure cookers.
• the present invention relates more particularly to seals intended to be put in place in such devices to ensure, in operation, the seal between the inside and the outside of the device.
• the present invention thus relates to a seal for a device for cooking food under pressure, said apparatus comprising:
• a tank and a lid intended to be attached to said tank to define a cooking chamber
• locking means making it possible to hold the lid on the tank, said locking means comprising at least one first locking member integral with the lid and at least one second locking member integral with the tank, the first locking member being intended for be engaged under the second locking member, after the cover has been placed on the tank, to maintain said lid on said tank,
• the seal being designed to be interposed between the lid and the tank to ensure the sealing of the cooking chamber.
• the present invention also relates to a pressurized food cooking appliance equipped or capable of being equipped with a seal according to the invention.
• a rope type joint or a lip seal, which is arranged in the cover so that, when placing the cover on the vessel of the apparatus, said seal can come to bear against the tank and ensure the tightness of the device.
• the introduction of the lid on the tank leads to a compression of the seal, which is necessary for the latter to perform its sealing function.
• the objects assigned to the invention therefore aim to remedy the aforementioned drawbacks and to propose a new seal for a pressure food cooking appliance which, while ensuring a good seal of the cooking chamber, allows a in place and a lid lock on the tank that are particularly simple, intuitive and safe.
• Another object assigned to the invention is to propose a new seal whose mounting is particularly easy.
• Another object assigned to the invention is to propose a new seal which has a simple and robust structure, and which is inexpensive to manufacture. Another object assigned to the invention is to provide a new seal which gives the cooking appliance increased reliability, durability and operational safety.
• Another object assigned to the invention is to propose a new device for cooking food under pressure whose closure is particularly easy, intuitive, safe and requires little effort.
• Another object assigned to the invention is to propose a new device for cooking food under pressure which has good ergonomics and offers excellent guarantees of safety during handling.
• the objects assigned to the invention are achieved by means of a seal for pressure cooking apparatus, said apparatus comprising:
• a tank and a lid intended to be attached to said tank to define a cooking chamber
• locking means making it possible to hold the lid on the tank, said locking means comprising at least one first locking member integral with the lid and at least one second locking member integral with the tank, the first locking member being intended for be engaged under the second locking member, after the cover has been placed on the tank, to maintain said lid on said tank,
• the seal being designed to be interposed between the lid and the tank to seal the cooking chamber, said seal being characterized in that it is arranged to cap the upper rim ( 7) of the tank and designed for, when the cover docking the tank, first come into simultaneous contact with said lid and said tank while the first locking member is at an altitude greater than or equal to that of the second body locking and then collapse under the sole weight of the lid sufficiently to bring the first locking member to an altitude lower than that of the second locking member.
• the objects assigned to the invention are also achieved by means of a pressure food cooking appliance characterized in that it is provided with a seal according to the invention.
• FIG. 1 illustrates, in a three-dimensional view from above, an embodiment of the seal according to the invention.
• - Figure 2 illustrates, in a three-dimensional view from below, the seal shown in the figure.
• FIG. 3 illustrates, according to an overall view in partial section, an alternative embodiment of the pressure cooker according to the invention at the moment when the lid accostes the tank so that the seal comes into contact with this last.
• - Figure 4 illustrates, in a sectional view, the configuration of the apparatus shown in Figure 3 when the lid is placed on the tank and released by the user, so as to rest under its own weight.
• FIG. 5 illustrates, in a sectional view, the configuration of the cooking apparatus shown in Figures 3 and 4 after the locking members have been engaged so as to lock the lid on the tank.
• FIG. 6 illustrates, in a sectional view, the apparatus shown in Figures 3 to 5 after the lid has been locked on the tank and when the pressure has risen in the cooking chamber.
• FIG. 7, 8, 9, 10 illustrate, in schematic side sectional views, the operation of an embodiment of the cooking apparatus according to the invention provided with bayonet type locking members, according to the steps docking, releasing the lid, engaging the locking members and increasing the pressure of the apparatus.
• the present invention relates to an apparatus 1 for cooking food under pressure, preferably of the pressure cooker type for domestic use, said apparatus comprising a tank 2 and a lid 3 which is intended to be attached to said tank 2, and more preferentially to be placed on the upper rim 7 of said tank, to define a cooking chamber 4.
• the cooking appliance 1 is placed on a plane and horizontal work plane P, and that the lid 3 is superimposed substantially vertically above the tank 2 in the vertical direction ⁇ 22!).
• the cover 3 may be provided with a raised central area 3A raised and radially outwardly of the cover 3 by a fallen flank 3B, itself followed by an annular plate 3C which continues with a falling annular edge 3D , preferably substantially flat and vertical, the latter ending in an end end 3E rolled internally, as is the case on the embodiment corresponding to Figures 3 to 6.
• the lid 3 may have any diameter or any other embodiment, and in particular be substantially flat, that is to say present a central zone 3A not curved without falling flank 3B, and directly merging with the flat 3C annulus, as is the case on the embodiment, corresponding schematically to Figures 7 to 10.
• the upper rim 7 of the vessel 2 may advantageously comprise a rim that is dropped, rolled or stamped from the upper end of the vessel.
• the dome formed by said upper flange 7 may in particular be substantially horizontal, or, preferably, slightly inclined towards the inside of the vessel, as is illustrated in FIGS. 3 to 6.
• the lid and the tank will advantageously be made of a rigid material, preferably metal, able to withstand the heat and the constraints of pressure cooking.
• the apparatus 1 also comprises locking means 5 which make it possible to hold the lid on the tank and more particularly to avoid the separation of the lid and the tank, and a fortiori, the expulsion of the lid, when the cooking chamber 4 is under operating pressure.
• said locking means 5 comprise at least one first locking member 6 which is integral with the cover 3 and at least one second locking member 8 integral with the tank 2, the first locking member 6 being intended to be engaged under the second locking member 8, after the lid 3 has been placed on the tank 2, to maintain said lid on said tank.
• the cooking apparatus 1 will thus comprise a plurality of first locking members 6 and a plurality of corresponding second locking members 8 distributed, preferably regularly, around the periphery of the lid and the bowl respectively, to ensure a balanced and stable attachment of said lid to said tank.
• Said locking means 5 can be in various forms without this constituting a restriction of the invention, since they make it possible to alternate between locking and unlocking the lid 3 on the tank 2, and that they comprise for this purpose a first locking member 6, a portion of which is able to engage on and against the lower portion of a second locking member 8.
• said locking means 5 will preferably be formed by a system of jaws, comprising two diametrically opposed jaws and movably mounted at least according to a radial component on the cover 3, the first locking means corresponding to a jaw 6 and the second locking member 8 corresponding to the upper rim 7 of the tank.
• the locking means 5 are of the bayonet type, the first locking member 6 being formed by a plurality of cover ramps, while the second locking member 8 is formed by a plurality of corresponding tank ramps.
• the cooking appliance 1 can be provided with:
• first locking member 6 being formed by the upper face 101 of the lower reentrant edge 102 of a jaw 100
• second of the locking member 8 being formed by the lower face. 103 of the tank rim 7 or a ramp provided for this purpose, as shown in Figures 3 to 6
• first locking member 6 being formed by the upper face 200 of tenons or cover ramps 201 and the second locking member 8 being formed by the lower face 202 of vessel ramps 203, as shown in Figure 8,
• stirrup locking means (not shown), the first locking member 6 being formed by the upper face of each end of the stirrup, and the second locking member 8 being formed by the lower face of a fixing lug under which the end of the stirrup can be engaged.
• the cooking appliance 1 is provided with a seal 0 which is designed to be interposed between the lid 3 and the tank 2 in order to seal the enclosure of cooking 4, under normal operating conditions, and more particularly when said cooking chamber 4 is filled with steam at an overpressure substantially between 1 and 200 kPa and a temperature of the order of 100 ° C to 135 ° C.
• said seal 0 is designed for, when the lid 3 accosts the tank 2, first come into simultaneous contact with said lid 3 and said tank 2 while the first member of 6 lock is at a first altitude h 6 i greater than or equal to the altitude h 8 of the second locking member 8, as shown in Figures 3 and 7, and collapse under the weight of the lid 3 alone sufficiently to bring the first locking member 6 to a second altitude h 6 2 which is lower than the altitude h 8 of the second locking member 8.
• the seal 10 according to the invention is thus arranged and dimensioned so that by cooperating on the one hand with the cover 3 which exerts on him the simple action of its weight, and of on the other hand with the tank 2 which forms a retaining stop opposing the fall of said cover, it automatically ensures a positioning of the first locking member 6 relative to the second locking member 8 with a functional vertical clearance j which allows the engagement or insertion without friction or friction of said first locking member 6 under the second locking member 8.
• the mere fact of placing the lid 3 on the tank 2 and releasing said lid makes it possible to ensure a vertical positioning such as the subsequent operation of the locking means 5, and in particular the displacement of the first locking member 6 with respect to the second locking member 8 for closing the container, is done freely and without forcing, almost without encountering any resistance, which facilitates the use of the device 1 and makes it safer.
• the user can thus actuate the locking means 5 without having to exert any additional downward vertical pressure on the cover, which on the one hand avoids damaging the seal by excessive crushing stress of the latter , but also limits the risk of improper operation of the cooking appliance 1, and in particular of overturning thereof.
• the seal 10 allows the simultaneous collapse of all the first locking members 6 under their respective second locking members 8.
• said seal is arranged to cap the upper rim 7 of the tank, that is to say so as to overlap said upper flange 7 between the inside of the tank and the outside of the tank , which improves its stability and can further contribute to the automatic centering of the lid on the tank.
• the seal 10 may advantageously be provided with a heel 11, preferably peripheral, which may advantageously be extended by a substantially vertical centering protrusion 12 which is intended to be interposed between the outer lateral part of the tank rim 7 and the internal lateral face of the lid 3, and more particularly of the 3D dropped edge, in order to guarantee the centering of the lid 3 on the tank 2.
• the apparatus 1 is preferably designed to allow assembly and maintenance of the seal in the lid 3, including when said lid is separated from the tank.
• the annular plate 3C preferably defines with the falling edge 3D and the end rolled end 3E an annular groove in which is housed the seal 10, and more particularly its heel 11.
• the seal 10 is designed to be taken vertically sandwiched between the lid 3 and the tank 2, and more particularly to be clamped between the annular plate 3 which overhangs it and the upper end of the upper rim 7 of the tank which retains it, so as to form a kind of elastic spacer able to deform by compression or crushing under the weight of the lid 3.
• said seal 10 preferably comprises at least a first flexible lip 13, which protrudes from the heel 11, and whose deformation allows the collapse of said seal 10 under the weight of the lid 3.
• said first lip 13, which is preferably arranged to come into contact with the upper edge 7 of the tank, is designed to be sufficiently flexible to absorb at least a portion, preferably the majority, if not all, of the deformation necessary to allow the seal 10, when subjected to the weight of the cover 3, to reduce its interposition dimension H to allow the first locking member 6 to pass under the second locking member 8.
• dimension interposition H means the vertical space that the seal 10 opposes the approach of the lid 3 and the upper edge 7 of the tank 2, and more particularly the spacing distance between the upper edge of the tank 7 and the annular plate 3C of the cover 3 as determined by the apparent thickness of said seal at this location.
• the vertical compression of the seal which occurs spontaneously under the effect of the weight of the lid is produced by bending of the first lip 13.
• the first flexible lip 13 forms a flexible skirt which protrudes from the peripheral heel 11 towards the inside of the gasket 10.
• said first lip 13 thus has at least one centripetal radial extension component between the root 14 which connects it to the heel 1 and its free end 15.
• said root 14 forms a kind of hinge with respect to which the flexible skirt articulates to act as a leaf-spring which ensures the elastic suspension of the lid 3 with respect to the tank 2.
• the seal 10 according to the invention also has a substantially circular shape, its constituents, and in particular the heel 11 and the first lip 13, preferably having substantially a geometry of revolution with respect to the axis vertical ( ⁇ ').
• the invention is in no way limited to a particular form of seal, the latter being adaptable to any particular form of cooking appliance 1, and more particularly of tank rim 7, and in particular to have a general geometric shape. substantially oval, square, or any other suitable type.
• the flexible skirt 13 comes into contact with the cooking apparatus, and preferably the tank 2, in the manner of a continuous elastic ring which creates a substantially annular sealed contact area all around the upper periphery of the bowl. 2, which makes it possible to ensure excellent sealing of the cooking chamber 4 by compensating, if necessary, certain imperfections in the surface condition of the tank rim 7 or any differences in the positioning of the seal 10 related to the tolerances of the manufacture or assembly of the appliance 1.
• said thickness e will be substantially between 1 mm and 3 mm, and preferably close to 1, 8 mm.
• the lip 13 will also have a substantially constant thickness e from its root 14 to its inner free end.
• the lip 13 will extend substantially rectilinearly between its root 14 and its free end 15, thus defining substantially planar upper and lower faces and preferably substantially parallel to each other.
• the length L of said first lip 13, measured between its root 14 and its opposite free end 15, will be determined in particular according to the relative dimensions of the tank 2 and the lid 3, and more particularly those of the tank rim. 7 or the peripheral edge 3A of the cover, but also the elasticity that it is desired to give to the seal 0.
• said length L will be substantially between 5 mm and 15 mm, and preferably close to 13 mm.
• the first lip 13 has, at least when the seal 10 is at rest, a substantially planar structure which is inclined, downwards in FIGS. 1 and 3 to 6, by an opening angle substantially understood. between 20 degrees and 50 degrees, and preferably close to 35 degrees, relative to the horizontal plane of the seal P1, itself substantially parallel to the work plane P.
• the seal 10 is dimensioned so as to also maintain a non-zero opening angle, that is to say a deviation of the first lip 13 relative to the horizontal plane of the seal P1, preferably substantially between 10 degrees and 30 degrees when under load, ie when subjected to the weight of the cover before the pressure buildup of the device.
• said opening angle confers on the one hand the first lip 13 its spring effect when it approaches the tank rim 7, but also allows said first lip 13 to define, in combination with the centering protrusion 12 and the heel 11, a clearance zone 16 of substantially flared section in which is housed the tank rim 7 when the latter comes into contact with the lower surface of said first lip 13.
• the seal 10 can therefore be provided with a clearance zone 16 forming a recess, which is preferably in the form of an annular groove which opens downwards, through example substantially in "U” or "V", recess in the hollow of which penetrates the upper rim 7 of the tank.
• this clearance 16 confers a self-centering character to the seal 10, and therefore to the cover 3, and allows the latter to come to cap the vessel substantially covering the upper flange 7 in a particularly stable, precise and reproducible manner .
• such an arrangement automatically and immediately ensures the centering of the cover 3, a certain lateral transverse support of the seal 10 and said cover 3 relative to the tank 2, as well as a definition and an angular hold (in pitch and roll ) a lid plate adapted to lock the latter.
• the lid 3 has a mass substantially between 1 kg and 3 kg, which corresponds to a weight of the order of 10 N to 30 N.
• these values are not limiting, the skilled person being able to dimension the seal 10 or any other element of the cooking appliance 1 according to the destination and the desired capacity of the latter.
• the useful vertical stroke C authorized by the seal 10 that is to say the difference between the first altitude h 6 i of the first locking member 6 when the seal 10 is substantially at rest and the second altitude h 6 2 of said first locking member 6 when the seal 10 is subjected to the only constraint of the weight of the cover 3 is substantially between 2 mm and 8 mm, and preferably close to 5.5 mm .
• the functional clearance [resulting from the collapse of the seal 10, and more particularly the minimum vertical distance separating the upper bearing surface from the first locking member 6 of the lower bearing face of the corresponding second locking member 8 is substantially between 1 mm and 3 mm.
• the vertical travel C authorized by said seal 10 is preferably such that it corresponds to a proportion of vertical subsidence of the seal, that is to say to a ratio between the interposition dimension H of said seal when the latter is collapsed under the weight of the cover, as shown in Figure 4, and the same interposition dimension H when said seal is at rest, as shown in Figure 3, which is substantially between 0.50 and 0.80, and preferably close to 0.65 (ie a slump of about one-third).
• the seal 10 according to the invention comprises a second lip 20 which protrudes from the same heel 11 as the first lip 13 and which has a stiffness to vertical deformation higher than the first lip, c that is, a higher apparent vertical stiffness than the latter.
• Said first lip may therefore preferably constitute a deforming member allowing the functional collapse of the seal.
• this second lip 20 forms an upper lip intended to bear against the annular plate 3C of the cover 3, preferably at a terminal bead 21, which ensures a reinforced seal between said cover 3 and the seal 0.
• said second lip 20 is solid and mounted substantially in opposition to the first lip 13, so that the seal has a substantially divergent transverse section "V".
• the seal 10 according to the invention thus preferably has a substantially asymmetrical structure comprising a first flexible lip 13 and a second more rigid lip 20 superimposed on said first lip 13, and preferably shorter than the latter.
• this asymmetric structure allows the seal to adopt a different behavior depending on whether it is mounted at the place or upside down in the cover, in particular since it has a compressive strength, and therefore the vertical depression of the lid on the tank, much higher when mounted upside down, so that its second lip 20 bears against the upper rim of the tank 7, only when it is mounted to the place, in the direction appropriate to its normal operation.
• the seal 10 according to the invention is formed integrally in an elastomeric material, and preferably silicone.
• FIGS. 3 to 6 which has jaw locking means
• FIGS. 7 to 10 having a bayonet locking system
• the tank 2 rests on the working plane P, the lid 3 being separated and lined with the seal 10, which is advantageously inserted into the annular groove of the latter, the back of the heel 11 bearing against the edge fell 3D while the bead 21 of the upper lip 20 abuts against the annular plate 3C, the latter forming a shoulder constituting a vertical retention abutment against said seal 10.
• the seal 10 substantially retains its shape at rest, as is illustrated in FIGS. 3 and 7, the first locking member 6, and more particularly the upper face 01 of the jaw. 02 or the upper face 200 of the cover ramp 201, being at a first altitude h 6 i greater than or equal to that of the second locking member 8, in this case the lower face 103 of the tank rim 7 on the variant illustrated in FIG. 3, or the lower face 202 of the tank ramp 203 illustrated in FIG. 7.
• the tightness of the cooking chamber 4 is ensured as soon as the first lip 13 comes to rest against the inner face of the upper tank rim 7 by forming a substantially annular sealing ring.
• the creation of the seal and the implementation of the guiding of the cover can occur particularly early on the descent of the cover 3 on the tank 2, without impeding the establishment of said cover. Sealing and guiding can also be reinforced by the subsidence of the seal 0. The closure of the device 1 is therefore particularly reliable, reproducible and intuitive.
• the seal 0 can advantageously form a damping pad which prevents the lid 2 and the upper rim 7 of the tank from colliding.
• the user allows the latter to exert, by the simple fact of its weight, a natural compressive stress, substantially predetermined and reproducible, on the seal 10, which spontaneously causes the elastic deformation of said seal, and more particularly, essentially, of the first lip 13.
• This collapse of the seal is accompanied by a controlled displacement of the lid 3 which sinks further towards, if not into, the tank 2 in a substantially vertical downward movement F1, that is to say approaches the bottom of the 2A tank, so that the first locking member 6, which is integral with said lid 3, sees its altitude decrease until it reaches a second altitude h 6 2 lower than the first altitude h 6 i and especially lower to that h 8 of the second locking member 8, the latter preferably remaining stationary at a substantially constant altitude h 8 .
• the first locking member 6 advantageously crosses the vertical threshold formed by the second locking member 8, which automatically places it in a position to bypass the obstacle initially formed by said second locking member 8 and more particularly to engage under the latter.
• the majority if not all of the useful stroke C authorized by the seal is obtained by elastic deflection of the first lip 13 around its root 14, said deflection having the effect of gradually reducing the opening angle a and consequently the interposition dimension H in which the seal, substantially in the manner of a wedge or a compressible wedge, maintains the gap, in this case not zero, between the upper edge of the vessel 7 and the annular plate 3C of the cover 3.
• the seal 10 also contributes to the centering of the lid 3 on the tank, since it engages substantially simultaneously on either side of the upper edge of the tank 7, the first lip 13 forming a kind of truncated cone penetration which is introduced inside the tank 2 by sliding on the upper flange 7, while the centering protrusion 12 is maintained outside said upper flange 7, said flange 7 thus preferably sinking progressively into the clearance zone 6 provided for this purpose.
• this centering phenomenon can be reinforced when the upper rim 7 is inclined gently towards the inside of the tank, as is illustrated in FIGS. 3 to 6.
• the lid 3 adopts and thus automatically maintains a substantially horizontal and balanced attitude, adapted to the operation of the locking means 5, so that, the cover being at an appropriate altitude and not substantially not leaning, each first member the locking device is indeed pre-positioned under the second locking member which corresponds to it and that it is therefore not necessary that the user controls one by one each pair of first and second locking members 6, 8 before to activate the closing command.
• this operation will return either to bring about a substantially horizontal and centripetal movement of the jaws 102, preferably in translation, for example by means of a central control knob, as illustrated in FIG. rotating the lid about its vertical axis ( ⁇ ') by means of a handle, in order to rotate the lid ramps 201 with respect to the tank ramps 203 as shown in FIG. figure 9.
• the prior positioning of the first locking members 6 relative to the second locking members 8 allows said first members to locking 6 to perform their movement F2 without being obstructed by the second locking members 8, insofar as the suspension of the lid 3 has created a functional game j which allows said first locking members 6 to come and slide freely under said second locking members 8, substantially overlapping and in line with the latter.
• the locking means 5 of the cooking appliance according to the invention can advantageously be actuated, both on closing and on opening, on the one hand without it being necessary for the user to press on the cover 3 to drive more advantage, since the functional clearance i required for the operation of the first locking members 6, and more particularly for the "slam" of the jaws, appears from the outset, the simple fact of the installation of the cover 3 on the tank 2, and secondly without the first locking members 6 come into contact with said second locking members 8, and a fortiori without said first locking members 6 have to exercise during their movement and their implementation, a friction or any stress against said second locking members 8, the tank 3, and / or the seal 10.
• the user can then place the device 1 on a heating source so as to cause the rise in pressure of the cooking chamber 4.
• the cover 3 can lift slightly under the effect of said pressure, and make up the clearance initially allowed to allow the passage of the first locking members 6 under the second locking members 8.
• said first and second locking members come together to come into contact with each other, the second locking members 8 then acting as a stop against first locking members 6 to firmly hold the cover 3 against the tank.
• the seal 10 then deforms to pass from a collapsed configuration to an intermediate configuration, by re-deploying partially to accompany this rise of the lid 3, while maintaining the tightness of the cooking chamber 4.
• the first locking means 6 therefore advantageously occupy a third altitude h 3 Intermediate 6, between the first and the second elevation, and preferably substantially equal to h 8 second locking members 8.
• the first lip 13 substantially modifies the radial position of the zone of sealed contact that it forms with the upper rim 7 of the tank, the latter "rolling" somehow along the underside of said lip 13 away, respectively approximating, said contact area of the center of the tank as recovery, respectively tilting, of said lip.
• the apparatus is cooled and / or purged of its vapor, so that, since the lid is no longer maintained by the internal pressure of the cooking chamber, the latter collapses again for recover the configuration it occupied in Figures 4, 5, 8 and 9. The user can then operate the locking means in the opening direction to separate the lid 3 of the tank 2.
• the seal 10 is housed permanently on the tank 2 rather than the lid 3 and / or that the first flexible lip 13 is placed in the upper position.
• the seal 10 according to the invention makes it possible to confer on the cooking appliance 1 a predictable and reproducible behavior, as well as good ergonomics and a particularly intuitive and simple use, since it is sufficient for the user to approximately position the lid on the tank to ensure the proper centering of said lid, the proper pre-positioning of all the locking members, and finally the sealing of the cooking chamber 4.
• the constructive arrangements described above advantageously prevent the user from exerting excessive stress on the seal or on the locking means to the risk of damaging the device, compromising its sealing, or even turn it over during opening and closing maneuvers.
• the present invention substantially improves the operational safety and longevity of the cooking apparatus 1.
• the invention finds its industrial application in the design and manufacture of pressure cookers and pressure cooker seals.

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• Engineering & Computer Science (AREA)
• Food Science & Technology (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Cookers (AREA)
• Pressure Vessels And Lids Thereof (AREA)

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• 2010
  • 2010-01-11 FR FR1050144A patent/FR2955166B1/fr not_active Expired - Fee Related
• 2011
  • 2011-01-10 BR BR112012017052-0A patent/BR112012017052B1/pt active IP Right Grant
  • 2011-01-10 CN CN201180005844.XA patent/CN102711564B/zh active Active
  • 2011-01-10 JP JP2012547536A patent/JP6297779B2/ja active Active
  • 2011-01-10 KR KR1020127020454A patent/KR101894601B1/ko active Active
  • 2011-01-10 WO PCT/FR2011/050035 patent/WO2011083284A2/fr not_active Ceased
  • 2011-01-10 EP EP11704269.7A patent/EP2523584B1/fr active Active
  • 2011-01-10 US US13/520,622 patent/US8931402B2/en not_active Expired - Fee Related
  • 2011-01-10 ES ES11704269.7T patent/ES2572739T3/es active Active

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