FR2740301A1 - High-pressure treatment unit for agricultural and food products - Google Patents
High-pressure treatment unit for agricultural and food products Download PDFInfo
- Publication number
- FR2740301A1 FR2740301A1 FR9512860A FR9512860A FR2740301A1 FR 2740301 A1 FR2740301 A1 FR 2740301A1 FR 9512860 A FR9512860 A FR 9512860A FR 9512860 A FR9512860 A FR 9512860A FR 2740301 A1 FR2740301 A1 FR 2740301A1
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- Prior art keywords
- piston
- cylinder
- food products
- diameter
- agricultural
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Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/015—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with pressure variation, shock, acceleration or shear stress or cavitation
- A23L3/0155—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with pressure variation, shock, acceleration or shear stress or cavitation using sub- or super-atmospheric pressures, or pressure variations transmitted by a liquid or gas
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- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
Description
Machine de traitement sous haute pression de produits agroalimentaires.High pressure processing machine for food products.
La présente invention concerne une machine de traitement sous haute pression de produits agroalimentaires. The present invention relates to a machine for treating food products under high pressure.
Plus particulièrement l'invention s'applique au cas d'un produit liquide ou pâteux qui est injecté directement dans une chambre d'un cylindre séparé en deux chambres par un piston libre, l'autre chambre étant alimenté en fluide sous très haute pression pouvant atteindre jusqu'à 10 000 bars. More particularly the invention applies to the case of a liquid or pasty product which is injected directly into a chamber of a cylinder separated into two chambers by a free piston, the other chamber being supplied with fluid under very high pressure which can reach up to 10,000 bars.
Actuellement, le piston métallique est entouré d'un joint élastomère assurant l'étanchéité entre les deux chambres. Currently, the metal piston is surrounded by an elastomeric seal ensuring the seal between the two chambers.
Cependant lors de la montée en pression, compte-tenu des très fortes pressions exercées, le joint élastomère perd son étanchéité car il se contracte alors même que le cylindre, lui, se dilate. il en résulte des fuites entre le fluide de pressurisation (généralement de l'eau) et le produit traité. Il peut même se produire une chute du piston au fond du cylindre. However, during the pressure increase, taking into account the very high pressures exerted, the elastomeric seal loses its tightness because it contracts while the cylinder itself expands. this results in leaks between the pressurizing fluid (generally water) and the treated product. The piston may even fall at the bottom of the cylinder.
La présente invention a pour but de remédier à ce grave inconvénient. The object of the present invention is to remedy this serious drawback.
L'invention a ainsi pour objet une machine de traitement sous haute pression de produits agro-alimentaires comportant un cylindre à l'intérieur duquel est situé un piston libre partageant l'intérieur du cylindre en deux chambres dont l'une est alimentée en fluide de pressurisation et l'autre en produit à traiter, caractérisée en ce que ledit piston libre est en caoutchouc et en ce qu'il est de révolution, son diamètre maximal constituant au moins une arête circulaire qui, en position de repos du piston, en dehors du cylindre, a un diamètre compris entre 1,05 et 1,50 fois le diamètre intérieur du cylindre. The subject of the invention is therefore a machine for high-pressure treatment of food products comprising a cylinder inside which is a free piston dividing the inside of the cylinder into two chambers, one of which is supplied with pressurization and the other in product to be treated, characterized in that said free piston is made of rubber and in that it is of revolution, its maximum diameter constituting at least one circular edge which, in the position of rest of the piston, outside of the cylinder, has a diameter between 1.05 and 1.50 times the inside diameter of the cylinder.
Il est bien entendu que par le mot caoutchouc on englobe aussi bien les caoutchoucs synthétiques que le caoutchouc naturel et donc les produits dits élastomères. It is understood that by the word rubber is meant both synthetic rubbers and natural rubber and therefore so-called elastomer products.
Par ailleurs, par l'expression : "son diamètre maxima constituant au-moins une arête circulaire", on veut dire que la hauteur de portion de piston possédant ce diamètre peut se réduire à une simple arête, par exemple dans le cas d'une forme tronconique, mais que bien entendu, cette hauteur peut n'être pas nulle et l'on a alors, non plus une simple arête, mais une surface cylindrique qui peut d'ailleurs éventuellement s'étendre sur toute la hauteur du piston dans le cas d'un piston cylindrique. Furthermore, by the expression: "its maximum diameter constituting at least one circular edge", it is meant that the height of the portion of piston having this diameter can be reduced to a simple edge, for example in the case of a frustoconical shape, but that of course, this height may not be zero and there is then no longer a simple edge, but a cylindrical surface which can moreover possibly extend over the entire height of the piston in the case of a cylindrical piston.
Selon une réalisation particulière, ledit piston comporte au moins une portion tronconique du côté du fluide de pressurisation, le plus grand diamètre de cette portion tronconique étant situé également du côté dudit fluide de pressurisation. According to a particular embodiment, said piston comprises at least one frustoconical portion on the side of the pressurizing fluid, the largest diameter of this frustoconical portion also being located on the side of said pressurizing fluid.
Ceci facilite l'introduction du piston dans le cylindre. This facilitates the introduction of the piston into the cylinder.
On va maintenant donner la description d'un exemple de mise en oeuvre de l'invention en se reportant au dessin annexé dans lequei
La figure 1 montre très schématiquement une machine de traitement sous haute pression selon l'invention.We will now give the description of an example of implementation of the invention with reference to the accompanying drawing in lequei
Figure 1 shows very schematically a high pressure treatment machine according to the invention.
La figure 2 et 3 donnent deux exemples de formes possibles de pistons, hors cylindre, donc au repos hors contraintes. FIGS. 2 and 3 give two examples of possible forms of pistons, excluding the cylinder, therefore at rest without constraints.
La figure 4 montre un autre exemple de piston de même forme extérieure que celui de la figure 3 mais comportant un évidement. FIG. 4 shows another example of a piston with the same external shape as that of FIG. 3 but comprising a recess.
La machine comprend essentiellement un cylindre 1 fermé hermétiquement par un fond 2 et un couvercle 3 et contenant en son intérieur un piston de révolution 4 partageant l'intérieur du cylindre en une première chambre 5 et en une seconde chambre 6. The machine essentially comprises a cylinder 1 hermetically closed by a bottom 2 and a cover 3 and containing inside it a piston of revolution 4 dividing the interior of the cylinder into a first chamber 5 and into a second chamber 6.
La première chambre 5 est alimentée en fluide de pressurisation, par exemple de l'eau par une conduite 7 équipée d'une vanne 8. Une conduite 9 équipée d'une vanne 10 permet la vidange de la chambre. The first chamber 5 is supplied with pressurization fluid, for example water through a pipe 7 equipped with a valve 8. A pipe 9 equipped with a valve 10 allows the chamber to be emptied.
La seconde chambre 6 est alimentée en produit à traiter, par exemple du jus de fruit, par une conduite 11 équipée d'une vanne 12. Une conduite 13 équipée d'une vanne 14 assure la vidange de la chambre 6 une fois le produit traité sous haute pression. The second chamber 6 is supplied with product to be treated, for example fruit juice, by a pipe 11 equipped with a valve 12. A pipe 13 equipped with a valve 14 empties the chamber 6 once the product has been treated under high pressure.
Le produit à traiter est soumis pendant 5 à 30 minutes à des pressions comprises entre 4000 et 10000 bars. The product to be treated is subjected for 5 to 30 minutes to pressures between 4,000 and 10,000 bars.
Conformément à l'invention, le piston 4 est en caoutchouc naturel ou synthétique. According to the invention, the piston 4 is made of natural or synthetic rubber.
On peut aussi, par exemple, utiliser outre du caoutchouc naturel, tout matériau synthétique élastomère tel qu'un silicone, du polyéthylène, du polyuréthane. It is also possible, for example, in addition to natural rubber, any elastomeric synthetic material such as silicone, polyethylene, polyurethane.
Les figures 2 et 3 montrent deux formes possibles, parmi d'autres, du piston 4, tel qu'il se présente à l'extérieur du cylindre 1, donc au repos en dehors de toute contrainte. Dans cet état, son diamètre maximal, compris entre 1,05 et 1,50 fois le diamètre interne du cylindre 4, forme au moins une arête 15. Figures 2 and 3 show two possible forms, among others, of the piston 4, as it appears outside the cylinder 1, therefore at rest without any constraint. In this state, its maximum diameter, between 1.05 and 1.50 times the internal diameter of the cylinder 4, forms at least one edge 15.
Dans la figure 2 le piston est tronconique et dans la figure 3 il comporte une partie cylindrique 18 puis une partie tronconique 19. L'extrémité de plus gros diamètre l'arête 15 est située du côté de la première chambre 5 alimentée en fluide de pressurisation. La figure 4 montre un piston de même forme extérieure que le piston de la figure 3, mais possédant un évidement 20 qui permet de faciliter son montage dans le cylindre 1. D'autres formes peuvent aussi convenir. En particulier le diamètre maximal du piston peut ne pas constituer une simple arête 15 mais une surface cylindrique d'une certaine hauteur. Les deux formes représentées permettent une introduction aisée dans le cylindre 1. In FIG. 2 the piston is frustoconical and in FIG. 3 it has a cylindrical part 18 then a frustoconical part 19. The end of larger diameter the edge 15 is located on the side of the first chamber 5 supplied with pressurizing fluid . Figure 4 shows a piston of the same external shape as the piston of Figure 3, but having a recess 20 which facilitates its mounting in the cylinder 1. Other shapes may also be suitable. In particular the maximum diameter of the piston may not constitute a simple edge 15 but a cylindrical surface of a certain height. The two shapes shown allow easy introduction into cylinder 1.
Sur les figures 2 et 3 on a figuré par deux traits discontinus 16 et 17 les limites du diamètre interne du cylindre 1 dans lequel le piston devra être introduit. In Figures 2 and 3 there are shown by two broken lines 16 and 17 the limits of the internal diameter of the cylinder 1 into which the piston should be introduced.
Ainsi, grâce à l'invention on obtient une excellente étanchéité, jusqu'à la pression maximale, entre les deux chambres 5 et 6. Thus, thanks to the invention, an excellent seal is obtained, up to the maximum pressure, between the two chambers 5 and 6.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9512860A FR2740301A1 (en) | 1995-10-31 | 1995-10-31 | High-pressure treatment unit for agricultural and food products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9512860A FR2740301A1 (en) | 1995-10-31 | 1995-10-31 | High-pressure treatment unit for agricultural and food products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2740301A1 true FR2740301A1 (en) | 1997-04-30 |
Family
ID=9484104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9512860A Pending FR2740301A1 (en) | 1995-10-31 | 1995-10-31 | High-pressure treatment unit for agricultural and food products |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2740301A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6158981A (en) * | 1998-06-18 | 2000-12-12 | Flow International Corporation | Method and apparatus for aseptic pressure-processing of pumpable substances |
| US6164930A (en) * | 1998-06-18 | 2000-12-26 | Flow International Corporation | Apparatus for regulating flow of a pumped substance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3779383A (en) * | 1972-04-25 | 1973-12-18 | Becton Dickinson Co | Sealed assembly for separation of blood components and method |
| DE3619457A1 (en) * | 1986-06-10 | 1987-12-17 | Bolenz & Schaefer Maschf | Cylindrical pressure accumulator for hydraulic systems |
| US5228394A (en) * | 1990-11-02 | 1993-07-20 | Kabushiki Kaisha Kobeseikosho | Processing apparatus for food materials |
| FR2687590A1 (en) * | 1992-02-20 | 1993-08-27 | Kobe Steel Ltd | APPARATUS AND METHODS FOR PRESSURIZED TREATMENT OF LIQUID MATERIALS. |
| FR2690854A1 (en) * | 1992-05-05 | 1993-11-12 | Acb | High pressure stabilisation of fruit juice - in which liq. prod. is treated in high pressure chamber with double action jack |
-
1995
- 1995-10-31 FR FR9512860A patent/FR2740301A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3779383A (en) * | 1972-04-25 | 1973-12-18 | Becton Dickinson Co | Sealed assembly for separation of blood components and method |
| DE3619457A1 (en) * | 1986-06-10 | 1987-12-17 | Bolenz & Schaefer Maschf | Cylindrical pressure accumulator for hydraulic systems |
| US5228394A (en) * | 1990-11-02 | 1993-07-20 | Kabushiki Kaisha Kobeseikosho | Processing apparatus for food materials |
| FR2687590A1 (en) * | 1992-02-20 | 1993-08-27 | Kobe Steel Ltd | APPARATUS AND METHODS FOR PRESSURIZED TREATMENT OF LIQUID MATERIALS. |
| FR2690854A1 (en) * | 1992-05-05 | 1993-11-12 | Acb | High pressure stabilisation of fruit juice - in which liq. prod. is treated in high pressure chamber with double action jack |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6158981A (en) * | 1998-06-18 | 2000-12-12 | Flow International Corporation | Method and apparatus for aseptic pressure-processing of pumpable substances |
| US6164930A (en) * | 1998-06-18 | 2000-12-26 | Flow International Corporation | Apparatus for regulating flow of a pumped substance |
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