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
  • A47J27/09—Safety devices
  • A47J27/092—Devices for automatically releasing pressure before opening
• • 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
  • A47J27/0813—Locking devices using a clamping ring or clamping segments

Definitions

• the present invention relates to the general technical field of food cooking appliances, in particular of domestic nature, intended to form a sealed cooking chamber, in which are cooked foods under steam pressure.
• the present invention more particularly relates to a food cooking apparatus under pressure arranged to form a cooking chamber, provided with a conduit for the establishment of a vapor leakage flow from the inside of the enclosure to the chamber. and defining a first vapor passage section, said apparatus comprising a pressure regulating member capable of having on the one hand a regulation configuration, in which it adjusts the first passage section to maintain the pressure prevailing in the enclosure at a predetermined level, and secondly a decompression configuration, in which it adjusts the first passage section to allow, regardless of the level of pressure in the chamber, the communication of the interior of the the enclosure with the outside, said duct further defining a second passage section located upstream of the first section in the direction leakage flow.
• Pressurized cooking appliances in particular for domestic use, of the pressure cooker type, are well known in the prior art.
• Such devices generally comprise a tank and a lid to be attached to the tank to form a sealed cooking chamber in which are placed the food to be cooked.
• This chamber can thus achieve high pressures and temperatures when the device is subjected to the influence of a heating source.
• Such devices are also generally provided with a control valve to maintain the pressure within the chamber at a predetermined level, usually referred to as the "operating pressure".
• the operating pressure is indeed, because of its high level, incompatible with a secure opening, ie without risk of sudden escape of the lid under the effect of pressure.
• a first method it is possible to place the apparatus under a stream of cold water.
• Such a solution is unsatisfactory, however, because it involves abundantly wetting the outer surface of the device, with all the disadvantages that this entails for the user.
• Such a method of decompression is also relatively difficult to execute by the user, because it requires the displacement of the heavy and burning apparatus, with all the discomfort and the related risk, towards a water point.
• such a method can lead, for some devices at least, to an internal depression of the device, which prevents the separation of the tank and lid.
• An alternative method is to act on the regulating valve of the apparatus, so as to forcibly communicate the interior of the chamber with the outside.
• Devices are thus known provided on the one hand with a circular orifice formed in the lid, and on the other hand with a spring-loaded regulating valve comprising a circular head, of diameter greater than that of the orifice and from of which rises, at its periphery, an annular seal.
• the annular seal is intended to bear tightly against the lid under the action of the spring, so as to surround the orifice and thus form with the head a sealed chamber capping the orifice to prevent any escape of steam towards outside.
• the pressure in the chamber exceeds a predetermined value, the head and its seal are pushed away from the orifice against the action of the spring, thereby allowing automatic regulation of the pressure in the chamber.
• the regulation valve In order to obtain a good quality of regulation, it is necessary that the regulation valve is extremely sensitive to the evolution of the pressure within the enclosure, so as to be able to react quickly to possible pressure fluctuations in the chamber. inside the enclosure. To this end, it is necessary that the surface of the valve seat, that is to say the pressure exchange surface between the valve and the interior of the enclosure, be as large as possible. This means that the valve head must have the largest possible diameter, within the constraints of space and technical feasibility.
• the objects assigned to the invention therefore aim at proposing a novel pressure food cooking appliance which remedies the various disadvantages of the prior art listed above and which offers an excellent compromise between the quality of regulation on the one hand and the efficiency and safety of decompression on the other hand, while being very simple and economical design.
• Another object of the invention is to propose a new device for cooking pressurized food allowing, during its decompression, to effectively limit the disturbances of the vapor leakage flow.
• Another object of the invention is to propose a new apparatus for cooking food under pressure of particularly compact construction.
• Another object of the invention is to propose a new pressure food cooking appliance of particularly simplified construction allowing a very reliable operation.
• Another object of the invention is to propose a new device for cooking food under pressure whose design is based on proven principles.
• Another object of the invention is to propose a new device for cooking food under pressure which is capable of providing a particularly fine pressure regulation.
• Another object of the invention is to propose a new device for cooking food under pressure allowing excellent control of the decompression flow.
• Another object of the invention is to provide a new pressure food cooking appliance constructed from a minimum number of parts.
• Another object of the invention is to propose a new domestic appliance for cooking food under pressure whose decompression is particularly rapid and secure, while having excellent control sensitivity.
• a pressurized food cooking apparatus arranged to form a cooking chamber, provided with a duct allowing the establishment of a steam leakage flow of the interior of the enclosure to the outside and defining a first section for the passage of steam
• said apparatus comprising a pressure regulating member capable of presenting on the one hand a regulation configuration, in which it regulates the first section; passage to maintain the pressure prevailing in the chamber to a predetermined level, and secondly a decompression configuration, wherein it regulates the first passage section to allow, regardless of the level of pressure in the chamber, setting communicating the interior of the enclosure with the exterior, said conduit further defining a second passage section located upstream of the first section in the direction of the leakage flow, said apparatus being characterized in that it comprises means for adjusting the second passage section designed so that the latter presents, when the regulator is in regulation configuration, a first value and, when the regulator is in the decompression configuration a second value substantially less than the first value.
• FIG. 1 illustrates, in a general exploded perspective view, a cooking apparatus according to the invention.
• FIG. 1 illustrates, in a schematic perspective view, the cover of the apparatus of Figure 1.
• FIG. 3 illustrates, in top (bottom) views from below, from the side and from above, a control module incorporating the pressure regulating device of the apparatus and intended to be attached and removably fixed. on the lid shown in Figure 2.
• FIG. 4 illustrates, in a schematic perspective view, a sectional detail of the module shown in FIG. 3.
• - Figure 5 shows a detail of the pressure adjusting member, when the latter has its control configuration.
• FIG. 6 shows a detail of the pressure adjusting member, when the latter has its decompression configuration.
• the pressurized food cooking apparatus 1 is intended for cooking different foods under steam pressure, preferably in a domestic context.
• the cooking apparatus 1 consists of a domestic pressure cooker.
• a domestic pressure cooker for the sake of simplicity of description, reference will be made hereinafter exclusively, in connection with the accompanying drawings, to an apparatus 1 constituted by a domestic pressure cooker, it being understood that the invention may also possibly relate to professional type appliances. or semi-professional.
• the apparatus 1 is designed to form a cooking chamber, which is preferably substantially sealed and intended to be subjected to the action of a heating source, the latter being external (for example: cooking plate) or internal (for example: on-board electrical resistance).
• a heating source for example: cooking plate
• internal for example: on-board electrical resistance
• the cooking apparatus 1 comprises a vessel 2 forming a cooking vessel and preferably having substantially a symmetry of revolution along an axis XX '(see FIG. 1).
• the adjective "axial" will refer to the direction of this axis of symmetry X-X 'direction which is similar to the vertical direction when the device is in normal operation.
• the shape of the tank 2 may not be a form of revolution (for example an oval shape), without departing from the scope of the invention.
• the tank 2 is conventionally manufactured from a metallic material such as stainless steel or aluminum, and is preferably provided with a heat-conducting bottom 2A secured to the tank 2 for example by striking at hot.
• the tank 2 may also comprise a gripping member, formed for example by one or more handle (s) 2B, 2C, which are preferably two in number and fixed on the tank 2 diametrically opposite.
• a gripping member formed for example by one or more handle (s) 2B, 2C, which are preferably two in number and fixed on the tank 2 diametrically opposite.
• the apparatus 1 also advantageously comprises a lid 3 intended to be attached and locked on the tank 2 to form with the latter, in cooperation with a seal 30, the cooking chamber.
• the tank 2 and the lid 3 are designed so that the enclosure they form is sufficiently sealed to allow a rise in pressure of the apparatus.
• the lid 3 whose shape is preferably complementary to that of the tank 2 and for example is substantially discoidal, comprises on the one hand an inner face 3A intended to lie opposite the tank 2 when the lid is locked on this last, and secondly an outer face 3B opposite to said inner face 3A, said outer face 3B being intended to be oriented towards the outside of the tank 2, when the tank 2 and the lid 3 form the cooking chamber .
• the lid 3 can be locked or unlocked on the tank 2 by means of locking / unlocking 4.
• the latter can be of any type known to those skilled in the art, and for example consist of a jaw system (corresponding to the variant shown in the figures), segments, bayonets or brackets, this list is not limiting.
• the apparatus 1 comprises a control module 5 intended to be attached to the lid 3, preferably in a removable manner, thanks to a threaded pin 6 cooperating with a hole 7 in the cover 3 and a locking nut 8 to be screwed onto the threaded shaft 6.
• the module 5 carries a series of operating and safety members, such as two control buttons 9, 10 respectively controlling the closing and opening of the locking / unlocking means 4, a removable timer 11, an overpressure safety valve 12, and a sliding finger 13, on the one hand to prevent the device from mounting in pressure in the event of poor closure of the cover, and on the other hand to prevent the opening the lid as long as the pressure in the device is incompatible with the safety of the user.
• operating and safety members such as two control buttons 9, 10 respectively controlling the closing and opening of the locking / unlocking means 4, a removable timer 11, an overpressure safety valve 12, and a sliding finger 13, on the one hand to prevent the device from mounting in pressure in the event of poor closure of the cover, and on the other hand to prevent the opening the lid as long as the pressure in the device is incompatible with the safety of the user.
• the apparatus 1 is provided with a duct 14 allowing the establishment of a vapor leakage flow from the interior of the enclosure to the outside.
• the duct 14 extends from the cover 3 and continues within the module 5 to the outside of the apparatus 1.
• the module 5 comprises a bottom 5A intended to be pressed against the upper face 3B of the cover 3.
• a chamber 15 delimited laterally by an annular seal 15A rising from the bottom 5A and surrounding the volume interior defined by said chamber 15.
• the chamber 15 communicates with a discharge pipe 16.
• the seal 15A bears tightly against the upper face 3B the cover 3, so as to surround a through hole 17 formed in the entire thickness of the cover 3.
• the chamber 15 is placed in sealed communication on the one hand with the interior of the chamber via the orifice 17, and secondly with the outside of the device via the discharge pipe 16, the chamber 15 being interposed between the orifice 17 and the discharge pipe 16.
• the orifice 17 thus forms a communication port of the interior of the enclosure with the conduit 14.
• the conduit 14 is formed, in this particular embodiment, by the juxtaposition and the mutual communication of the orifice 17, the chamber 15 and the discharge pipe 16.
• conduit 14 is not limiting, and it is quite conceivable that the conduit 14 is made in another way, particularly in the case where the device does not adopt a design implementing a removable module, such as that illustrated in the figures.
• the conduit 14 defines a first section 18 for steam passage, section 18 through which the steam contained in the chamber to escape to the outside.
• steam is to be taken here in a general sense, that is to say as designating the gas phase or pseudo-gas present within the cooking chamber and cohabiting with the food and the cooking liquid.
• the apparatus 1 comprises a pressure regulator 19 which may have a regulation configuration
• the predetermined level of pressure is preferably substantially between 55 and 90 kPa.
• the pressure adjusting member 19 is designed to adjust the size of the first section 18 as a function of the instantaneous pressure prevailing in the chamber to: allow a leak of steam by the first section 18 if the instantaneous pressure is greater than the predetermined level, or preventing any leakage of steam by the first section 18 if the instantaneous pressure prevailing in the chamber is below the predetermined level, so as to allow the rise (or the limitation) in pressure of the device 1.
• the pressure regulating member 19 comprises a valve 20 which, when the regulating member is in regulation configuration, on the one hand closes (that is to say cancels) the first passage section 18 as long as the pressure in the chamber is less than or equal to said predetermined level, and on the other hand releases said first section (i.e., gives it a non-zero value) as soon as that the pressure prevailing in the enclosure exceeds said predetermined level.
• the valve 20 is designed to, when in the control configuration, on the one hand prohibit any communication from the inside of the enclosure with the outside as long as the pressure prevailing in the enclosure is less than or equal to the predetermined level and secondly automatically communicate, under the effect of pressure, the interior of the enclosure with the outside as soon as the pressure prevailing in the enclosure exceeds said predetermined level .
• the adjustment member 19 is also capable of having a decompression configuration (illustrated in FIG. 6) in which it adjusts the first passage section 18 to allow, independently of the pressure prevailing in the enclosure , putting the interior of the enclosure into communication with the outside.
• the adjustment member 19 confers on the first section 18 a non-zero value, maintained substantially permanently (even if the pressure prevailing in the enclosure becomes lower or equal to the predetermined level), to allow the decompression of the apparatus 1, that is to say the balancing of the internal pressure prevailing in the cooking chamber with the atmospheric pressure prevailing outside the chamber. pregnant.
• the pressure adjusting member 19 comprises a valve 20
• the latter thus releases the first passage section 18 when the adjustment member 19 is in the decompression configuration.
• the valve 20 gives the first section 18 a non-zero value, preferably predetermined, allowing the establishment of a vapor leakage flow leading to the decompression of the enclosure.
• the duct 14 further defines a second passage section 21 located upstream of the first passage section 18 in the direction of the leakage flow (that is to say from the inside). from the speaker to the outside).
• the steam contained in the cooking chamber will pass, when it escapes to the outside of the appliance 1 via the duct 14, firstly through the second passage section 21 and then through the first passage section 18, said first and second sections 18, 21 being preferentially distinct and located at a distance from each other, as illustrated in the figures.
• the apparatus 1 comprises an adjustment means 22 for the second passage section 21 designed so that said second passage section 21 has, when the adjustment member 19 is in the regulation configuration (cf. FIG. 5), a first value and, when the adjustment member is in the decompression configuration (see FIG.
• the general principle of the invention is therefore based on controlling the value of a second passage section 21 located upstream of the first passage section 18 on which the pressure adjusting member 19 acts. More specifically, the invention is based on the implementation of an upstream passage section 21 greater when the adjusting member 19 is in the control configuration that when the latter is in the decompression position. This allows both a high sensitivity regulation, optimizing the exchange of pressure between the control member 19 and the interior of the enclosure, and an optimal control of the speed of the leakage flow when the adjusting member 19 is in the decompression configuration, the restriction of the upstream passage section 21 to prevent the projection of steam and / or hot food material through the conduit 14.
• the second passage section 21 is located substantially towards, and preferably at, the interface between the enclosure and the conduit 14.
• the second passage section 21 defined by the conduit 14 is preferably located the most upstream possible of said duct 14, facing the direction of the leakage flow, that is to say that the vapor contained in the chamber enters the duct 14 passing in the first place by the second section 21.
• the adjustment means 22 of the second passage section 21 is functionally connected to the adjustment member 19 of the pressure inside the enclosure, so that the passage of the adjustment member 19 from its regulation configuration to its decompression configuration causes the value of the second passage section 21 to decrease, from its first value to its second value, and vice versa.
• the adjustment means 22 of the second passage section 21 is carried by the pressure adjusting member 19, as shown in the figures. This thus makes it possible, by means of a single particularly compact subassembly formed by the adjustment member 19 and the adjustment means 22, to perform numerous functions, and notably a control function, a function of decompression, and a function for adjusting the size of the second passage section 21.
• the adjustment means 22 of the second passage section 21 comprises an elongated body 23.
• the latter is preferably of cylindrical shape, and has a first section 23A and a second section 23B with a section greater than that of the first section 23A.
• the elongated body 23 is preferably slidably mounted coaxially with the opening 17 for placing the inside of the enclosure in communication with the conduit 14, so that when the regulating member 19 is in regulation configuration, the second passage section 21, which then has its first value, is defined by the cooperation of the first section 23A and the orifice 17 (such this is illustrated in FIG. 5), whereas when the adjustment member 19 is in the decompression configuration, the second passage section 21, which then has its second value, is defined by the cooperation of the second section 23B and the port 17 (as shown in FIG. 6).
• the port 17 placing in communication the interior of the chamber with the conduit 14 * has a circular shape, that is to say it extends through the thickness of the lid 3, between the outer face 3B and the inner face 3A of the latter in a cylindrical contour with a circular base axis of symmetry YY ', parallel to the axis X-X'.
• the elongate body 23 is advantageously mounted in translation along the axis Y-Y ', so that it enters the orifice 17 concentrically with the latter.
• the first section 23A and the second section 23B are positioned in the extension of one another and separated by a shoulder, the first section 23A and the second section 23B preferably having a symmetry of revolution about the Y axis.
• the first section 23A has a smaller radial size than the second section 23B, that is to say that the maximum diameter presented by the first section 23A is smaller than that presented by the second section 23B.
• the second passage section 21 has a shape of a circular ring delimited internally by the first section 23A (or the second section 23B according to the configuration adopted by the adjustment means 19) and externally by the contour of the orifice 17.
• the first passage section 18 has a value that does not substantially exceed the first value of the second passage section 21.
• the second section 18 passage section 21 which then has its first value, is greater than the first section 18 released by the valve 20.
• the first passage section 18 when the adjustment member 19 is in the decompression configuration, has a value that substantially exceeds the second value of the second passage section 21.
• the first section 18 defined by the valve 20 in the decompression configuration is greater than the second passage section 21, which then has its second value.
• the reduced section (second value of the second passage section 21) delimited by the second section 23B and the orifice 17 limits the leakage rate of steam sufficiently to limit the occurrence of an ejection phenomenon of water and / or food (phenomenon of "foaming” also referred to as “emulsion"), while the first section 18 then has a significant predetermined value, greater than that of the second section 21, chosen for however, allow a rapid pressure drop.
• the pressure adjusting member 19 comprises a valve 20
• the latter advantageously comprises a head 24, which is preferably mounted on and at the end of a rod valve 25, which is itself preferably mounted to slide axially along the axis YY 'in the module 5.
• the head 24 preferably extends substantially perpendicular to the axis YY' and advantageously has a generally discoidal shape, as illustrated in the figures.
• the valve 20 also comprises an annular seal 26 rising from the head 24, preferably at the periphery of the latter.
• This seal 26 is intended, when the valve 20 closes the first passage section 18 (illustrated in Figure 5), to bear substantially sealed against the cooking chamber, that is to say in the against the outer face 3B of the cover 3, so as to surround the orifice 17 and thus prevent the communication of the interior of the chamber with the outside, since the orifice 17 then opens into a closed chamber by the seal 26 and the head 24.
• the gasket 26 is made of material with the head 24, that is to say that it forms with the latter only one and the same piece in one piece, said piece coming to cap the stem 25.
• the elongated body 23 also rises from the head 24 of the valve 20, in the axial direction X-X '.
• the elongate body 23, the head 24 and the seal 26 are formed by one and the same piece of one piece, which is preferably a cap of material elastomer, for example of the silicone type, intended to be force-fitted on the rod 25.
• the rod 25 is advantageously subjected to the axial return action of a spring 27.
• the spring 27 continuously plates the seal 26 of the head 24 against the outer face 3B of the cover 3, which thus forms a seat for the valve 20, when the adjustment member 19 is in regulation configuration.
• the valve 20 rises, thus releasing the first passage section 18, which automatically regulates the pressure.
• the passage of the adjustment member 19 in decompression configuration corresponds to the exercise of an opposite force and greater than the return force exerted by the spring 27, so as to maintain the first passage section 18 released, which whatever the level of pressure prevailing in the enclosure, to allow the decompression of the latter.
• the ratio of the first value of the second passage section 21 to the second value of the second passage section 21 is substantially between 1, 05 and 2.5, and even more preferably between 1, 5 and 2
• the first value of the second passage section 21 is substantially between 10 and 15 mm 2 , and still more preferably substantially equal to 12.4 mm 2
• the second value of the second section of passage 21 is preferably substantially between 5 and 9 mm 2 , and still more preferably is substantially equal to 7.1 mm 2 .
• the user firstly returns the module 5 on the cover 3, by threading the threaded shaft 6 into the corresponding hole 7 formed in the cover 3 and fixing the module 5 with the locking nut 8 screwed onto the threaded spindle 6.
• the annular seal 15A bears against the outer face 3B of the cover 3, thus forming, in cooperation with the orifice 17, the conduit 14.
• the positioning of the module 5 on the cover 3 also causes the penetration of the elongate body 23 in the orifice 17, coaxially with the latter so as to define a second passage section 21 in the form of a circular ring.
• the user has within the tank 2 the food to be cooked, if necessary using a cooking basket (not shown) disposed within the tank 2.
• the user then returns the lid 3 equipped with his module of control 5 on the tank 2 and locks the device 1 with the jaws 4, the radial displacement of the latter being controlled by the buttons 9, 10.
• the apparatus 1 illustrated in FIGS. can comprise several indexed regulation sub-configurations, each of these regulation sub-configurations corresponding to a different calibration of the valve 20, produced by more or less compressing the spring 27.
• the apparatus 1 is then subjected to the heat of a cooking plate on which it rests.
• the heat released by the cooking plate is transmitted via the bottom 2A to the food arranged inside the cooking chamber formed by the assembly of the tank 2 and the lid 3.
• the pressure prevailing inside the enclosure increases.
• this pressure becomes greater than a predetermined level, corresponding to the calibration of the spring 27, the head 24 and the seal 26 move away from the external face 3B of the cover, which causes a leakage of vapor towards the outside thus allowing the automatic regulation of the pressure.
• This vapor leakage flow first borrows the second passage section 21, then passes through the first passage section 18 located downstream of the second section 21 in the flow direction, then passes through the chamber 15 and s Finally escapes through the discharge pipe 16.
• the head 24 the diameter of which directly conditions the bearing surface, presents a large diameter, for example a diameter at the seal 26 of 10.5 mm, 33 mm perimeter.
• the second passage section 21 is relatively large, and for example substantially equal to 12.4 mm 2 , so as to allow an excellent exchange of pressure between the inside of the chamber and the exchange surface formed by the head 24.
• the orifice 17 advantageously has a diameter of 6 mm, while the first section 23A of the elongated body 23 has a substantially equal diameter. at 4.5 mm.
• the user can proceed to the decompression of the apparatus by bringing the selector 28 into an indexed decompression position, resulting in the exercise of an opposite axial force and greater than the effort restoring force exerted by the spring 27.
• This makes it possible to raise the valve 20 by a predetermined height, sufficient to ensure a loss of contact of the seal 26 with the external face 3B of the cover 3, thus releasing the first section 18 and causing the second section 23B in cooperation with the orifice 17 to give the second section 21 its second value.
• the valve 20 will be separated as much as possible from its seat formed by the outer face 3B of the lid 3, that is to say that the interstitial space between the outer face 3B of the lid 3 and the seal 26 coming from the head 24 will be as large as possible, its value being chosen according to the second value of the section 21 to obtain a maximum flow without causing the projection of food material and / or hot water towards the outside, through the conduit 14.
• the second section 23B has a diameter substantially equal to 5.2 mm, thus defining with the orifice 17 (whose diameter is preferably equal to substantially 6 mm) a second section passage 21 having a second value substantially equal to 7.1 mm 2 .
• the tests in question were conducted with a device 1 with a tank of capacity equal to six liters, filled to half capacity and placed on a cast iron electric heating plate whose power is 1.5 KW.
• the decompression of the apparatus 1 is effected in 16 seconds to go from an internal pressure of 80 kPa to an internal pressure of 40 kPa when the second section 21 is equal to 12.4 mm 2 , while it takes 26 seconds when this section is equal to 7.1 mm 2 , all things being equal.
• the regulation fineness which corresponds to the difference between the trigger value (that is to say, the opening of the first section 18) of the valve 20 and the maximum regulation value is 4 kPa when the first section is substantially equal to 12.4 mm 2 , while it is substantially equal to 6 kPa when said second section 21 is substantially equal to 7.1 mm 2 , all things being equal elsewhere.
• the seal 26 should be spaced from the outer face 3B of the cover 3 of a distance of 0.2 mm (with a diameter of the joint 26 of 10.5 mm, which corresponds to a perimeter of 33 mm).
• the manufacturing tolerances do not allow such a spreading accuracy to be obtained, so that there is a risk of violent decompression (if the spacing distance s is actually greater than 0.2 mm because of manufacturing tolerances) or lack of sufficient decompression (if the spacing distance is actually less than 0.2 mm because of manufacturing tolerances).
• the invention makes it possible, by driving a section 21 situated upstream of the section 18 set by the regulation valve, to overcome the constraints relating to manufacturing tolerances, by allowing a distance much greater than 0.2. mm without, as much to favor the appearance of phenomena of violent escape.
• the invention finds its industrial application in the design and manufacture of pressure cookers.

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• Engineering & Computer Science (AREA)
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• Cookers (AREA)
• Measuring Fluid Pressure (AREA)
• General Preparation And Processing Of Foods (AREA)

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