OA10119A - Solar cooker-sterilizer - Google Patents

Abstract

Solar cooker or sterilizer consisting of an open heat-insulated chamber (1) for receiving a recipient (2) with or without a lid made of a heat conducting material in which are disposed the products to be cooked. An absorber (3) is fitted on at least one of the walls of the inner chamber, the opening of the latter being provided with a glass panel (4). The cooker according to the invention includes a first and second assembly capable of fitting into and/or onto one another with freedom and amplitude of motion in relation to one another, thereby enabling the cooker's inner volume to be adjusted to that of the recipient.

Description

PCI7EN93 / 00567 • 1 1> VO 93/25854! i. '; 1 <1 'SOLAR COOKER-STERILIZER.

The present invention relates to a new type of solar cooker-sterilizer box type.

The known solar cookers-sterilizers are generally constituted by an upper open box or enclosure.

The walls of the enclosure are insulated.

In the enclosure is placed a heat conducting container and optionally absorbent with the food to be cooked 10 and the opening is arranged a movable glazing to per-put light to penetrate.

They can be equipped with exterior and interior reflectors.

In a more advanced form, the bottom of the box is provided with a heat conductive absorber wall and fixed levitation is cut from a fixed container opening which is closed by a preferably glass lid.

In the first case, the thermal transport is not optimized.

In the second case, the container is paired with the box at least because of the diameter of the orifice of vitra-ge and the distance between the glazing and the absorber.

The present invention aims to provide a new type of cooker-sterilizer with a removable container in which the heat transfer between the absorber and the interior of the container is optimized. For this purpose, the solar cooker-sterilizer according to the invention consists of an open enclosure made of a heat-insulating material intended to receive a container in a heat-conducting material, said enclosure being provided on at least one of its inner walls with an absorber and the opening being closed by a glazing is essentially characterized in that it consists of a first set and a second set nestable one inside the other and / or one over the other with a relative freedom and relative movement of one relative to the other without heat discontinuity, which allows to adapt the internal volume of the cooker to that of the container.

Advantageously, the first set is constituted by the sides of the enclosure and the glazing and the second set by the bottom of the enclosure. Other advantages and features of the invention will appear on reading the following description of an embodiment of the invention given by way of nonlimiting example and illustrated by the accompanying drawings in which: FIGS. 1 and 2 are views showing box-type cookers of the prior art; FIGS. 3 and 4 show a first embodiment of the invention. - Figures 5 and 6 show another embodiment of the invention. Figure 7 is yet another embodiment of the invention. Figures 8 and 9 show another embodiment.

WO 93/25854 PCT / FR93 / 00567O1 ο I ί, 9 1 - Figures 10-11 are variants of Figures 3-9. Figures 12-13 and 14-15 show another embodiment of the invention. FIG. 16 shows an embodiment with an auxiliary burner, FIG. 17 is a sectional view of the open cooker-sterilizer, FIG. 1.8 represents the same closed, FIG. FIGS. 20 to 24 show embodiments with reflector, FIG. 25 shows an inclinable cooker-sterilizer, FIGS. 26 and 27 show another embodiment with "lid". Figs. 28 and 29 show fastening systems of the "cover" and the bottom, - Figs. 30 and 31 show an embodiment of the bottom with absorber, covered by a protection including a film; FIGS. 32 and 33 show two embodiments with an auxiliary burner; FIGS. 34 and 35 are a view of another embodiment of the cooker-sterilizer according to the invention; FIG. cut with spring between the cover, from FIG. 37 illustrates a further embodiment with top and bottom illumination, FIGS. 38 and 39 show a preferred embodiment of the invention. FIG. FIGS. 40 and 41 show a device with articulation of the two assemblies, FIGS. 42 and 43 represent a device with articulation and latch, FIGS. 44, 45 and 46 represent another form of embodiment with input. heat.

In Figure 1 and 2 are shown cookers type box of the prior art. In FIG. 1 it can be seen that the enclosure open on the top is closed by a glazing unit 2.

The containers 3 are at a distance from the glazing 2.

In the embodiment of FIG. 2 the bottom of the enclosure is provided with an absorber 4. The glazing 2 is pierced for the passage and the collapse of the container 3.

As a result, the cooker is connected to the container and vice versa.

As shown in the accompanying drawings, Figures 3/420 the cooker according to the invention consists of an enclosure 1 of any shape, for example, rectangular or round.

This enclosure is made of heat insulating material.

This enclosure is intended to receive a container 3 made of a heat-conducting material which rests on the bottom of the enclosure provided with an absorber wall 4. The enclosure is provided with at least one opening, for example in part superior and its opening is: closed by a vi f the a <, <2. The cooker consists of a first set 5 and a second set 6.

The first set consists of the side walls and the glazing 2 and the second set by the bottom and the absorber 4.

Said first set 5 and the second set 6 are mounted on one another and / or one in the other with a freedom and a relative movement amplitude of one with respect to the other. Advantageously, the interval between the assemblies 5 and 5 during their nesting is a few millimeters.

This interval does not affect any possible heat loss as the heat tends to rise. The nesting of the assembly 5 on the assembly 6 may be more or less complete, there will always bethermic continuity as long as the two sets are nested.

The relative displacement of one with respect to the other of the sets 5/6 makes it possible to adapt the cooker to the size of the container 3 while always obtaining a pressure contact between the glazing unit 2, the container 3 and Absorber 4. 25

It goes without saying that the glazing 2 is liéde any known manner making it irremovable, by gluing, or leaving it removable. The absorber 4 can be of any typetionnant by conduction or any other method, by means of heat pipes. for example, to the chamber known for example WO 93 / 25K54 PCT / FR93 / 00567 ϋ 0 i o | Advantageously according to the invention the upper edge of the container is closed by the glazing; 2. However, it is conceivable that a lid is provided on the container and is in pressure for example under the weight of the element 5. Advantageously, the container may itself be absorbent, the interior being coated with a black layer .

In the exemplary embodiment of the invention shown in FIGS. 5 and 6, an organ; Elastic 7, for example, a spring: a coil is disposed between the absorber 4 and the bottom of the enclosure to contribute to the pressurization of components, glazing, containers, absorber.

In the example of FIG. 7, the elastic member 7 is placed under the bottom constituting the element 6 which is pushed upwards, the elastic member 7 resting on a superstretch, the self or a table for example not shown.

FIGS. 8 and 9 show another embodiment of the invention according to which the first assembly 5 is constituted by the movable and removable glazing and the second assembly is constituted by the open enclosure 20 on one of its faces, preferably the face. higher.

The glazing 2 is held in position by a closure system schematized in 0.

FIGS. 10 and 11 show a variant of the embodiment of the invention according to FIGS. 8 and 9 in which an elastic member 7, for example a spring, is disposed between the absorber wall and the bottom of the enclosure, in order to to obtain a satisfactory pressurization of the components, absorber, container, glazing. \ VO 93/25354 PCT / FR93 / 00567 1. 10 15 20 25

In Figures 12 and 13 is shown another embodiment of the invention in which the assembly 5constituted by the sides of the enclosure and the glazing is mounted tilting and sliding on the assembly 6 constituted by the bottom and the absorber.

An oblong slot 8 of one of the sides in which a peg 9 of the bottom guides the tilting and sinking of the assembly 5 on the assembly 6, depression which isfunction of the height of the container, (not shown). As illustrated in FIG. 13, the cooker according to the invention can be stored at its bottom on a support 10.

FIGS. 14 and 15 show a variant embodiment in which the cooker rests on a support plane schematized by the line 11 and in which the assembly 5 is tilted by any means known from the assembly 6 to the support 11 and vice versa.

FIG. 16 shows a variant embodiment according to which the cooker according to the invention is appended with an auxiliary heat source which in the embodiment is constituted by a gas burner 12 with a bottle 13, said heat source being arranged under or in the bottom of the enclosure.

This arrangement allows a booster heating when necessary.

In the exemplary embodiments of the invention shown in the accompanying drawings, the enclosure is provided with an opening in the upper part, but it goes without saying that the enclosure can be provided with openings with glazing on the WO 93/25854 PCT / FR93 / 00567 B: .il ·! ! 1 9 1 sides, one or more glazed openings being envisaged.

As shown in FIGS. 17/18, the cooker-sterilizer according to the invention consists of an enclosure 5 1 made of an insulated material provided with an opening closed by a glazing unit 2 receiving a receptacle 3 and provided on at least one of its walls. , the bottom opposite the glazing in the example of FIGS. 17/18 of an abscirbeur 4. The enclosure 1 consists of two sets 5 and 10 6 emfcoi tables and / or stackable 1 'uτι on the other preferably with a relative range of motion from one to the other. The invention is not limited to the case in which · the two sets 5 and 6 have a relative amplitude of movement relative to each other but also includes the case where they are interlocking or stacking at a fixed position one compared to each other.

The first set 5 is constituted by the sides of the enclosure and the glazing 2 constitutes the "cover". The second assembly 6 is constituted by the bottom of the enclosure on the upper wall of which is the absorber wall.

The container 3 is of the type with a lid including autoclave closure can be used for high temperatures for sterilization.

The glazing 2 bears against the container lid 3.

The absorbing surface on the conductive plate of heat may be provided with a central circular cut-out 14 in which the bottom of the container 3 is housed.

FIGS. 20 to 24 show different embodiments of the invention in which the casing 1 is provided with one or more lateral reflectors 15 positioned above its edges and with the glazing 2,

The reflector or reflectors are mounted by any means known to be movable and reclining.

In particular, we postpone it by axamplaverticals as in figure 24 or inclined as in figure 23.

FIG. 25 shows an embodiment of the cooker-sterilizer according to the invention in which the bottom 6 is provided with at least one articulating foot 16 for orienting the cooker by inclination.

In this exemplary embodiment, the element 5 may have the periphery of the reflector glazing 15.

Figures 26 and 27 show a form of réa-lisation cooker-sterilizer in which the element 5 is mounted hinged and tilting on the element 6 constituting the bottom.

FIGS. 28 and 29 show embodiments in which between the absorber wall 4 and the base 6 is interposed a spring member 7.

The pressure attachment of the element 5 on the bottom 6 is effected by gravity or by means of attachment.

In FIG. 28, the fasteners 17 are arranged at the beginning of this cycle 5. They are preferably formed by flexible and elastic straps endowed with WO 93/25 "54 PCT / FR93 / 00567 G t ί * ll 9 1 in particular end rings or loops which thread on legs 18 or lateral rods of the bottom 6. "In FIG. 13, the fasteners are hooks 19 or elastic suspension brackets which cooperate in blocking with the legs 18 of the bottom 6.

Figures 30 and 31 show a realization mode of the element 6 with an exploded view (Figure 30) and a view of the assembled assembly (Figure 31).

According to this embodiment on the bottom 6, a heat-conducting plate 20 is placed, then the absorbing or absorber surface 4, then a protective film 21.

The film 21 is fixed on the periphery of the bottom.

The film 21 is provided at its center with a circular cut-out 22 in which the bottom of the container 3 passes. Advantageously, a fastening ring 23 is screwed or riveted around the cut-out 22.

FIGS. 32 and 33 show partial views of embodiments of the cooker-sterilizer according to the invention having an auxiliary heat source including a gas burner 24 for example. For this purpose, the bottom 5 is provided with a bore 25 of the burner.

The absorber plate 4 is raised above the bottom 5 by any known means and the combustion gases are evacuated by the space between the bottom and the absorber. "

In the embodiment of FIG. 33, the absorber wall is provided with a central orifice 26 for passing the flame of the flame. burner to the bottom of the container. > VO 93/25854 PCT / FR93 / 00567 11 9 ί ο ι I 9 1 The heat input can be obtained in any other appropriate way and especially above the desorber plate 4 and with any other heat source than dugaz, for example by means of tablets of solidified alcohol, 5 kerosene, wood, electricity.

FIGS. 34 and 35 show an embodiment of the cooker-sterilizer according to the invention in which wheels 27 are arranged "at the base of the box and fastened to either the element 5 or the bottom 6. 10 elastic member 7 is fixed to the glazing 2 and presses on the lid of the container 3.

An adjustable tilt cover 28 can be mounted on the element 5 which can receive one or more removable side reflectors. For this purpose, the upper edge of the walls of the element 5 is provided with end caps 29 shown schematically and for fixing the lateral reflector or reflectors.

Figure 36 shows the cooker-sterilizer with elastic member 7 between the glazing 2 and the lid 20 of the container.

FIG. 37 shows a version of the cooker or sterilizer in which the bottom 6 consists of a glaze or a transparent or translucent insulation permitting the passage of light. The absorber 4 is a double-sided absorber and the light is sent by means of a reflector 30 suitably positioned at a level lower than that of the sterilizer cooker. . WO 93/25354 PCT / FR93 / 00567 12 ohiH9 The bottom 6 may for example consist of a polycarbonate honeycomb wall or any other suitable material.

Figures 38 and 39 show a form of realization in which the cooker-sterilizer according to the invention is based on a support shown schematically, which is provided with a horizontal base 31 of support of the ele- 6 and element: 5 and a flange 32 preferably inclined but which can be horizontal and which receives the element 5 at the opening. In this embodiment of the invention, the horizontal base 31 of the support is at a lower level than the bottom position 6, which allows a movement of 5 compared to 6. The inclination of the flange 32 allows the equilibrium of the element 5 as shown in FIG.

In FIGS. 40 and 41, the element 5 is connected to the element 6, preferably at the base of one of its sides by means of a hinge 33.

In FIGS. 42 and 43, the elements 5 and 6 are connected by a hinge system 33.

The branch of the hinge attached to the rocker element 5 is fixed on a rigid rod 35 on which is mounted a coil type of type 36.

With respect to the articulation 33, there are in principle two and mounted through the wall 6 a rod 35 which "is fixed on the element 5 and has an elastic member of the coil type 36 which cooperates with a transverse latch 37 of the element 5. WO 93/25854 PCT / FR93 / 00567 13 Obi 1 9 1 This arrangement allows a relative amplitude of movement of the element 5 with respect to the element 6.

FIGS. 44, 45 and 46 show a variation of the invention of FIGS. 32 and 33. FIG. 44 shows that between the bottom 6 and the absorber 4 at least one passage 30 is provided. combustion gas released by the burner.

Advantageously, these passages consist of channels re-presented in fig 45 and extend on the sides of the bottom 6 downwards. The heating element, gas burner or other may be disposed either below the level of the absorber in a housing 39 or in the enclosure of the sterilizer, the wall of the absorber being able to provide a niche for this purpose.

FIG. 46 represents a variant of FIGS. 44 and 45 in which an insulating reflector 40 is mounted on the glazing 2 to reduce heat loss in the gas mode. In the various embodiments, the invention is shown with a pan-type container with or without a lid, which may or may not be self-cleaving.

It is obvious that any other type of container can be used in particular of planar shape or that in some cases the products to be cooked can be introduced directly.

Claims (20)

γνο 93/25854 PC17EN93 / 00567 14 0 U! ί j 9 1 CLAIMS: 1. Solar cooker-sterilizer of the type consisting of an enclosure made of a heat-insulating material (1) intended to receive a container (3) with self-cleaving closure or not in a heat-conducting material in which the products to be cooked are placed; interior of said enclosure beingdotéotéotéotéoté on at least one of its walls an absorber (4) andd'au least an opening closed by a glazing (2) characterized in that it consists of two sets 5 and 10 6 nestable l one in the other and / or one on the other with a relative range of motion relative to each other. 2. Solar cooker according to claim 1 charac-terized in that the glazing of the upper opening is a 13: continuous glass plate or any other form of glazingand the first set (5) is constituted by the sides of the enclosure and the glazing and the second set is formed by the bottom of the enclosure. 3. Solar cooker according to claim 1 and claim 2, characterized in that the sides of the enclosure constituting with the glazing unit (2) the first assembly (5) fit on the bottom of the enclosure constituting the second set (6). 4. Solar cooker according to claim 1, characterized in that the glazing (2) rests on the edge of the container. 5. Solar cooker according to claim 1 charac-terized in that the absorber elements (4), container (3) and glazing (2) are in pressure contact. WO 93/25854 PCT / FR93 / 00567 15 0 ί ο I J 9 6. Solar cooker according to claim 1 and claim 5 characterized in that a resilient member (7) is disposed between the absorber wall and the bottom constitutin'etemble (6) to push the components to the glazing 5 (2) which presses against the container by gravity. 7. Solar cooker according to claim 1 characterized in that the first set (5) is constituted by the glazing (2) and the second set (6) by the enclosure with its bottom and sides. 8. Solar cooker according to claim 1, characterized in that the first set (5) is pivotally and slidingly mounted on the second set (6). 9. solar cooker according to claim 1 charac-terized in that it comprises a heat source 15 booster. 10. Solar cooker according to the preceding claim characterized in that the heat source booster is a gas burner (12) disposed in the bottom of the enclosure. II. Solar cooker according to claim 1 characterized in that the chamber 1 is provided with movable or fixed lateral reflectors (15). 12. Solar cooker according to claim 1characterized in that the bottom (6) of the enclosure on which rppose the bottom of the container (3) is constituted successivelyad'a film (21) for protecting an absorbent surface (4) anda heat conducting plate (20). 13. Solar cooker according to claim 4, characterized in that the absorber plate (4) is elevated in relation to the bottom (6) which is provided with a passage (25) of a burner, the combustion gases evacuating through the gap between the bottom (6) and the absorber (4). 14. Solar cooker according to claim 1 5 characterized in that between the bottom (6) and the absorbing plate (4) or under the bottom (6) is disposed a spring member. 15. Solar cooker according to claim 1characterized in that the element (5) is fixed on the element (6) by gravity or by fastening devices. 16. Solar cooker according to claim 1 characterized in that a resilient member (7) is disposedatre the glazing and the lid of the container (3). 17. Solar cooker according to claim 1 characterized in that the bottom (6) is made of a transparent insulating material passing light rays in-sent by a reflector (30) and that the absorber (4) is an absorber double-sided absorbent. 18. Solar cooker according to claim 1 characterized in that the movable element (5) and the fixed element 20 (6) are articulated to one another. 19. Solar cooker according to claims 1 and 5 characterized by channels (38) of the bottom (6) between it and the gas evacuation absorber. 20. Solar cooker according to claim 1 characterized by a cover (40) insulating on the glazing (2). 21. Solar cooker according to claim 1 characterized; in that it rests on a support of which a central part receives the element 6, surrounded by a horizontal base (31) at a lower level with a rim (FIG. 32) receiving the lid (5) in equilibrium.