WO2005044667A1 - System zum evakuieren eines nahrungsmittelbehälters, behälter mit deckel und verfahren - Google Patents
System zum evakuieren eines nahrungsmittelbehälters, behälter mit deckel und verfahren Download PDFInfo
- Publication number
- WO2005044667A1 WO2005044667A1 PCT/DE2003/003430 DE0303430W WO2005044667A1 WO 2005044667 A1 WO2005044667 A1 WO 2005044667A1 DE 0303430 W DE0303430 W DE 0303430W WO 2005044667 A1 WO2005044667 A1 WO 2005044667A1
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- WO
- WIPO (PCT)
- Prior art keywords
- container
- vacuum pump
- lid
- valve
- control valve
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
- B65B31/046—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles co-operating, or being combined, with a device for opening or closing the container or wrapper
- B65B31/047—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles co-operating, or being combined, with a device for opening or closing the container or wrapper the nozzles co-operating with a check valve in the opening of the container or wrapper
Definitions
- the invention relates to a system for evacuating a food container according to the preamble of claims 1 and 8 as well as a vacuum pump, a container and a method therefor.
- Such a system for evacuating a container which can be closed with a lid is known from EP 0644 128 A1.
- a valve is formed in the lid closing the container in the bottom of a depression, which acts here as a check valve.
- the annular edge of the depression forms a sealing surface on which a manually operable vacuum pump can be placed in a sealing manner.
- the valve designed as a check valve opens and air flows out of the container space via the valve into the vacuum pump, where it is released to the outside during the next idle stroke after closing another check valve formed in the vacuum pump is transported to the atmosphere.
- the check valve in the lid closes as soon as the pressure in the container space is lower than the pressure in the vacuum pump or in the atmosphere. However, it is closed both in the container space and in the vicinity when atmospheric pressure is present.
- the check valve opens as soon as the pressure in the vacuum pump is lower than the pressure in the tank space.
- the check valve in the cover is formed by a membrane which is elastically biased in the starting position so that it blocks the flow path in the idle state. If there is sufficient vacuum in the container space, which is indicated by the fact that the pump can be operated with increasing difficulty, the suction connection of the vacuum pump can be separated from the suction connection on the cover by an operator. This is possible because after each stroke on the vacuum pump the check valve closes again and there is therefore no significant suction effect on the coupling connection.
- the object of the invention is to provide a system with a vacuum pump for evacuating a container which can be closed with a lid and which is used for storing food, with which the above disadvantages are avoided. In particular, a Misuse of the vacuum pump can be prevented. It is also to be avoided that the vacuum pump can be used to evacuate containers which are not suitable for the high pressures generated by the vacuum pump, which could lead to injuries.
- the system should also be able to generate a vacuum in the container that is only predetermined within narrow tolerances in order to extend the shelf life of the food in the container space as far as possible.
- a vacuum pump and a container / lid arrangement are to be created which ensure that only certain vacuum pressures can be achieved in the container space and through which only that vacuum pump can suck air out of the container space which fulfills the safety requirements.
- the vacuum pump itself is secure against misuse, i.e. that it can only be used to evacuate containers approved for this purpose. It is not possible to aspirate media other than air because the upstream control valve always remains closed in these states.
- a regulator valve is formed in the vacuum pump which only permits this specified pressure. If the vacuum is exceeded, the regulator valve opens automatically despite further pumping operations and thus keeps the vacuum constant.
- the stop surface is formed in the outlet of the flow channel, so that the control valve is opened when the vacuum pump is attached.
- the stop surface can also be formed outside the flow channel on the container or lid, only then the valve member of the valve must protrude outwards and be guided there, which is more complex. Due to the features of claim 3, the control valve can be operated easily. Instead of a pen, you can Of course, a depression at the suction outlet of the flow channel can also be formed if the control valve has a pin which engages in the depression when the vacuum pump is placed on it, thereby ensuring that the control valve opens.
- a flap valve is selected as a control valve on the vacuum pump according to the features of claim 4.
- the flap valve consists of two flap halves made of elastomeric material or rubber material, the sealing lips of which, in the closed state, bear against one another in a pressure-resistant manner due to the prestress formed in the elastomeric or rubber-like material and thus close the channel outlet formed between the flaps. Only when an actuating element, such as a pin, engages in the slot formed by the two flaps, are the two flaps pushed apart and the flow channel is partially released in the process.
- bevels are formed on the free end of the two flaps as actuating surfaces, which enables easier engagement of the stop element between the two flap sections.
- the flap valve is advantageously formed in one piece with the suction connection of the vacuum pump.
- the suction connection with its sealing surface itself engages sealingly in a sealing surface formed on the cover, which is preferably formed by a recess.
- the features of claim 5 indicate a poppet valve.
- other types of valves such as slide valve, ball valve, etc. are also possible.
- a particularly simple coupling of the vacuum pump to the lid or container is achieved in a particularly simple manner by the features of patent claim 6. Due to the frustoconical design of the suction nozzle on the vacuum pump and the appropriately adapted frustoconical design of the recess on the lid or on the container, the suction nozzle of the vacuum pump can be inserted and sealed into this opening particularly easily by hand without difficult coupling maneuvers. When the two coupling halves are centered, the control valve is automatically opened in the simplest way at the same time.
- a circular design of the sealing surface at the outlet of the flow channel (claim 7) is particularly advantageous and can also be easily manufactured.
- the vacuum pump is connected to an electric drive unit in order to generate vacuum in a particularly simple manner without the pumping force having to be provided by an operator.
- the vacuum pump according to the invention used here because a regulator valve is formed in it, which regulates (increases) the pressure as soon as a certain vacuum is reached.
- a regulator valve is formed in it, which regulates (increases) the pressure as soon as a certain vacuum is reached.
- a control valve is also arranged in the flow channel receiving the non-return valve, which control valve can only be opened when the correct pressure-controlled vacuum pump is attached to the outlet of the flow channel of the cover or the container which has the corresponding means according to the invention, namely an actuating surface for opening the control valve, which on the other hand can only generate a certain vacuum, as has already been described above.
- This is the only way to ensure that the correct or optimal pressure is applied to the container devices according to the invention.
- the pressure desired for the food storage containers according to the invention is thereby achieved and is always maintained within very narrow limits.
- the optimal vacuum pressure is 80% ⁇ 5%, ie 0.2 bar + 0.05 bar.
- the lid / container-side valve arrangement according to the invention can be designed either on the lid or on the container.
- the claims are based on both variants. It is advantageous, however, to design the valve unit on the cover, because the cover placed on a container generally runs horizontally, thus making it easier to place the vacuum pump vertically from above onto the top of the cover if the coupling device of the valve arrangement runs perpendicular to the cover. With this vertical coupling, the container does not slide off to the side on the storage plate. If, on the other hand, the valve arrangement were to be formed on the container, which would be more complex, the container would have to have either a lateral bulge with a preferably horizontally vertical or oblique surface in which the valve arrangement would be integrated.
- the position of the vacuum pump when coupling to the valve device would have to be oriented so that its suction port is concentric with the suction port of the valve arrangement.
- the vacuum pump then has to be attached obliquely from above or to the side of the container, which would be less advantageous in practice because the container has to be countered.
- valve can only be opened by the delivered vacuum when the control valve has been opened, and only then is the flow path to the container clear.
- a control valve downstream of the valve would in principle also be possible, but then an additional actuating device, for example in the form of an actuating lever, would have to be used to open the control valve, which would, however, entail a greater outlay.
- both the control valve and the downstream valve (actual vacuum check valve) of the valve arrangement are formed on the container or on the cover of check valves (claim 12), because these always automatically return to their closed state.
- the check valves are equipped with spring elements equips or these are integrated in them, so that their closed positions are always reached in the non-actuated state.
- a particularly simple to produce control valve is created by a movable closing device, preferably in the form of a sleeve, is displaceable on a pin or pin or other guide device, which the flow channel formed in the pin or the sleeve, which is on its lateral Extent of the pin emerges, closes or releases in the actuated state.
- the pin or pin preferably serves at the same time as an actuating element for the control valve formed on the vacuum pump and opens it when the suction port of the vacuum pump engages in a sealing manner in the suction port of the valve arrangement formed on the cover or on the container.
- a spring or an elastic spring element acts on the sleeve according to the features of claim 14.
- a vacuum pump for the system according to claim 1 is protected according to the invention, in which a control valve is formed in the suction channel, which is opened when the suction connection of the vacuum pump is placed on the valve arrangement formed on the cover or on the container.
- a vacuum pump is then only functional on vacuum containers which have a corresponding stop surface through which the control valve is opened. This prevents incorrect operation of the vacuum pump, which is essential in the food sector due to the prescribed hygiene.
- a particularly simple control valve design according to the features of claim 16 is achieved by a flap valve, which is injection molded in one piece from elastomeric material and can be inserted and fastened in the housing of the vacuum pump.
- the latter enables rapid replacement if the flap valve is defective.
- it can also be injection molded in one piece from the elastomeric material with the flap valve, which is then firmly but nonetheless detachably mounted on the suction collar of the vacuum pump.
- the features of claim 17 simplify the vacuum pump and its manufacture, because the suction port is also molded with the manufacture of the flap valve or both parts are integrally molded onto the housing. Such an embodiment is inexpensive and also relatively easy to manufacture.
- the sealing surface on the suction connection can either be formed on the circumference or on the end face. The sealing surface of the valve arrangement on the cover or on the container must then be adapted in accordance with a tight coupling.
- the features of claim 18 also allow easier insertion of the vacuum pump into the corresponding coupling recess of the valve arrangement on the container or on the lid.
- the conical sealing surface creates a particularly high sealing effect even when the vacuum pump is pressed lightly. Good sealing effects are achieved with elastomeric material (claim 19).
- the conical sealing surface can also be oval in cross-section or otherwise configured as a closed surface, in which case the connection connection on the valve arrangement on the lid or on the container must always be adapted.
- the features of claim 20 provide a vacuum pump with an electric drive unit under protection, which transfers the motor power via a drive shaft to the drive shaft of the vacuum pump after switching on the device, where then, for example in a vane pump, vacuum is generated, which in a particularly short time Container evacuated. A few seconds are enough to achieve the required pressure in the container. This can be indicated optically or acoustically, for example, by a pressure sensor formed on the vacuum pump when the correct pressure is present. An operator can then turn off the electrical switch of the vacuum pump. However, it is also possible to specify a minimum switch-on time at which all container sizes offered in the program for the corresponding vacuum pump must have reached the optimum pressure. If the pump remains switched on and coupled for a longer period of time, the pressure in the pump is kept at a constant level when it is present in the container.
- a container with a lid for a system according to claim 1 is finally protected, in which a stop surface is formed either on the container or on the lid, which has the task of opening the control valve in the vacuum pump if this is placed on the valve arrangement of the lid or container.
- a stop surface is formed either on the container or on the lid, which has the task of opening the control valve in the vacuum pump if this is placed on the valve arrangement of the lid or container.
- the stop surface is formed in the outlet of the flow channel of the valve arrangement, ie the flow path formed with the cover or with the container and the vacuum pump remains self-contained and does not need through an outlet opening from which an actuating lever for scanning the stop surface is then required emerges, to be interrupted, via which the lever then scans the lid or the container and then opens the control valve.
- an elevation, curvature or pin is claimed as a stop surface, all of which have the advantage that when the vacuum pump is placed, it engages in a recess formed on the vacuum pump, here the suction connection. If a flat stop surface or even a recessed stop surface were present on the valve arrangement on the cover or on the container, then an extension would have to be arranged at the suction connection of the vacuum pump, which extends to the lower stop surface when it is put on. This would have the disadvantage that the extension would also have to extend out of the suction connection of the vacuum pump, which could easily damage the control valve.
- the features of claim 24 also ensure that the flow channel in the lid or in the container is only released if the vacuum pump generating the optimum pressure is used. This measure ensures that the containers always reach the optimal pressure, which is not too high and not too low. This makes it possible to design the wall thicknesses of the lid and container only as thick as is necessary for the tightly tolerated pressure. This saves material costs and the containers and lids have a long shelf life.
- control valve is also formed by a check valve, which opens mechanically by placing the vacuum pump, but which closes again automatically after removal of the vacuum pump.
- control valve is designed in the flow direction upstream of the valve in the flow channel, this results in a valve arrangement that is easy to manufacture.
- the features of patent claim 27 show a particularly easy to manufacture, permanently working control valve, which in one embodiment is formed by a sleeve that slides on a pin that forms the valve seat.
- Such parts are easy to manufacture plastic parts that can be dimensioned and easily manufactured as molded parts made of plastic that they slide on each other with a precise fit.
- the channel bore formed in the pin, which forms part of the flow channel, is also easy to produce by spraying in the manufacture of the cover or a valve part.
- a spring acts on it in accordance with the features of patent claim 28.
- the spring can be designed as a spiral spring, as a leaf spring or as a rubber-elastic spring which acts on the sleeve.
- This spring element can even be molded onto the sleeve so that it only has to be attached to the lid or container, which can be done, for example, by gluing, screwing or welding, etc.
- a method for evacuating a container closed by a lid according to the system according to claim 1 is finally protected, in which a vacuum is generated and a connection connection to the container space takes place only when a control valve in the vacuum pump is formed, which is opened when coupling the vacuum pump to a lid or container by a stop surface formed on the lid or container.
- This method can easily be carried out by an operator without great effort, so that containers in which perishable food is stored can be evacuated quickly and without problems.
- FIG. 1 shows a longitudinal section through a system for evacuating a container which can be closed with a lid, the vacuum pump and drive unit and the container being partially shown and the suction outlet of the vacuum pump being shown placed on the valve unit;
- Figure 2 is a perspective view from the bottom right of the suction port of the vacuum pump on an enlarged scale. 3 shows a partial perspective view of the suction connection according to FIG. 3, but part of the housing has been cut out for better illustration of the flap valve; *
- FIG. 4 shows a partial top view of the valve arrangement according to FIG. 1 formed on the cover, the vacuum pump, however, not being placed on the inlet of the flow channel on the valve arrangement;
- FIG. 5 shows a section along the line V-V according to FIG. 1 through the flap valve according to the invention and the pin of the valve arrangement formed on the cover, the pin holding the flap valve in its open position;
- FIG. 6 shows a longitudinal section through the cover and the valve arrangement according to FIG. 1, but without a vacuum pump attached, but on an enlarged scale, the longitudinal section running perpendicularly in the plane of the drawing and in the center of the cover according to FIG. 1;
- FIG. 7 shows a further exemplary embodiment of a further valve arrangement according to the invention, in which, in addition to the check valve (not shown) customary in the cover, a further check valve is connected upstream of the valve arrangement and
- Fig. 8 is a perspective view of the lid according to the invention according to Fig. 6, but compared to Fig. 7 on a smaller scale and the individual components are shown in an exploded view.
- the system for evacuating a container that can be closed with a lid consists of a pot-shaped, essentially oval, circular or otherwise shaped and structured container 1, which is closed at its edge 2 forming the opening 4 by a lid 3. Between the edge 2 of the container 1 and the edge 5 of the lid 3 there is a seal 6 which seals the lid 3 against the container 1. For better centering, the lid 3 has a centering edge 8 which is centered on the inner wall 7 of the container.
- FIGS. 1 to 8 corresponding reference numerals have been used for corresponding components in FIGS. 1 to 8. So that the sealing ring 6 does not fall off the cover 3 according to FIGS. 1 and 6, it is inserted into a U-shaped annular groove 9 with pretension.
- the cover 3 has an oval depression 10 running over the center, as clearly shown in FIGS. 1, 6 and 8.
- two molded bearing journals 11 are formed on the side walls diametrically opposite one another, on which a valve cover 12 is pivotally mounted upwards.
- bearing bores 13 are formed on the valve cover 12 and are provided with slots 14 on one side for disassembly.
- the valve cover 12 has a conically tapering depression 15, on the bottom 16 (FIG. 6) of which a passage 17 is formed laterally, which forms the outlet of the flow channel 18 of the cover 3.
- Concentric to the conical recess 15 extends from the bottom 6 a pin or pin 19 which extends approximately to the surface 20 of the valve cover 12.
- a collar 36 is formed on the underside of the valve cover 12 concentrically with the conical recess 15 and presses a structured, band-shaped sealing sleeve 21 against the bottom 22 of the oval recess 10 of the cover.
- the bottom 22 is also structured like the sealing collar 21 and has three ring-shaped elevations 23, 24 and 25 as well as two guide pins 26, 27 projecting upwards, as can be seen particularly clearly from FIG. 6.
- the guide pins 26, 27 center the flat-shaped sealing sleeve 21 and penetrate the bores 52, 53 formed on the sealing sleeve 21.
- the elevation 23 is provided centrally with a passage 28, which from above is formed by a sealing tongue 29 formed in the structured sealing sleeve 21 is closed.
- the sealing tongue 29 is separated from the sealing sleeve 21 on one side via a slot 30 which runs essentially in a U-shape, while it is connected to the sealing sleeve 21 at the bottom of the U on the other side.
- the sealing tongue 29 can stand out from the sealing surface 31 of the valve 35 when a vacuum occurs on the underside 97.
- the passage 17, the channel space 32 and the passage 28 form the flow channel 18, which connects the container space 33 with the atmosphere 34.
- the sealing tongue 29 forms with the sealing surface 31 and the passage 28, the check valve 35 of the lid, as such check valves are also known per se from the general state of the art in vacuum containers. So that the sealing sleeve 21 on the valve 35 cannot lift off the elevation 23, the collar 36 presses this part of the sealing sleeve 21 against the outer upper edge of the elevation 23 when the valve cover 22 is closed.
- the valve cover 12 also has a downward-pointing sealing pin 37 which, in the assembled position of the valve cover 12, is formed laterally next to the valve 35 is and the tapering end 38 engages sealingly in a conical recess 39 of the structured sealing sleeve 21 so as to close the ventilation channel 40.
- the sealing pin 37 forms with the recess 39 the vent valve 41, which removes the vacuum from the container space 33 when the valve cover 12 is pivoted clockwise around the two bearing pins 12 (FIG. 6). This is because the ventilation channel 40 is released and air can penetrate from the outside to the container space 33. Since vacuum is present in the container space 33 before the venting process, the sealing tongue 29 is pressed against the sealing surface 31, ie the valve 35 is closed and cannot be opened in this way without intervention.
- a pressure indicator 42 which consists of a bellows-like membrane 43 rising upwards in one piece from the structured sealing sleeve 21, with a pin at its free end 44 is formed, which extends outwardly through a bore 45 from the valve cover 12.
- the pin 44 is extended all the way up when the pressure is off. If a vacuum is now created in the container space 33 when the cover 3 is placed on a container 1, the membrane 43 contracts due to the pressure conditions and the pin 44 moves downward into the bore 45 according to FIG. 6 and is therefore hardly visible from the outside that is, one only sees his end face 46. An operator now knows that there is a proper vacuum.
- a soft elastomer is sprayed onto the surface 20 of the cover 3, which is preferably injection molded from plastic, in order in this way to give the cover 3 a soft outer protective skin 47, so that the cover 3 can be gripped more easily and is better protected against damage.
- the protective skin 47 optical design features can also be carried out better.
- Fig. 8 it can still be seen that laterally resilient latching tongues 48 are formed on the distal end of the valve cover 12, which when the valve assembly 49 is closed by the valve cover 12 in lateral recesses 50 of the side wall 51 of the Snap the oval recess 10 into the cover 3 and so press the sealing collar 21 against the bottom 22.
- a tapered tapered suction connection 55 of a vacuum pump 64 is inserted into the conical recess 15 in such a way that the free end of the pin 19 is inserted into the two half-sided partially annular sections 56, 57 of the flap valve 58 and presses it two tongues 59, 60 of the flap valve apart in such a way that passages 61, 62 (FIG. 5) are formed laterally in order to open the flow channel 63 of the suction connection 55 of the vacuum pump 64 to the passage 17 of the flow channel 18.
- FIGS. 2 and 3 a section of the suction connection 55 made from a well-sealing, elastomeric plastic is shown as an individual part, which according to FIG. 1 is firmly attached to the free end of the housing 70 of the vacuum pump 64 in a kind of clip connection.
- elastic locking elements 65 which engage in a recessed manner in the recesses 67 formed on the tubular connection piece 66 and thus firmly connect the suction connection 55 to the housing 70 of the vacuum pump 64.
- Two opposite tongues 59, 60 extend from the inner wall of the suction connection 55 and form a flap valve 58 (FIG. 5). In the closed state of the flap valve 58, the two tongues 59, 60 are pressed against one another on their sealing surfaces 68 in such a way that the passages 61, 62 are closed in a pressure-tight manner.
- the pin 19 can be clearly seen again, which has on its outer circumference in the longitudinal direction of the pin 19 grooves 69 which also provide better passage when the flap valve 58 is pushed open, as shown in Fig. 5.
- the two sealing surfaces 68 are separated from one another and passages 61, 62 are formed.
- Fig. 1 of the vacuum pump 64 only the housing 70 with the indicated rotor pump unit 94, electric motor 92, drive shafts 91, 93 and the suction connection 55 attached to the housing 70 is sketched.
- the design of the vacuum pump itself which consists of fins formed on a rotor and a finned housing and which also has a valve device for regulating the pressure, is not shown in the drawing. represents, since this does not constitute the actual invention.
- any vacuum pump can be used which is already known in the prior art, for example from US Pat. No. 5,195,427 or from DE 10060996 C1.
- the rotor unit 94 of the actual vacuum pump 64 is formed in the space 71 surrounded by the housing 70.
- the drive unit 72 is not clearly visible, only part of the housing 73 is shown, which is coupled to the vacuum pump 64 from above according to FIG. 1.
- the dividing line 74 shows the transition from the housing 70 of the vacuum pump 64 to the housing 73 of the drive unit 72.
- the drive unit consists of an electric drive motor 92 and a drive shaft 91 which is coupled to the drive shaft 93 of the vacuum pump 64.
- FIG. 7 yet another embodiment of a further invention of a valve arrangement 75 is shown in outline, here too, in the drive unit 64 provided with the vacuum pump 64, the flap valve 58, as previously described, is shown, which is also part of the suction connection 55 of the Vacuum pump 64 is.
- the pin 19 is cylindrical and is penetrated by a central bore 76 which leaves the pin 19 laterally at the free end at the outlet opening 77.
- a sleeve 79 is guided in a precisely fitting and sliding manner, which is acted upon by a spring 80 in such a way that when the suction connection 55 of the vacuum pump has been lifted off the cover 3, it shifts such that it closes the outlet opening 77 of the bore 76.
- the slot 82 is locally limited so that the two tongues 59, 60 can be sufficiently separated from one another to open at least one passage 62 (FIG. 5) upward to the flow channel 63 of the vacuum pump 64.
- the displaceable sleeve 79 forms with the channel 76 and the pin 19 the control valve 83 of the third invention.
- the flow channel 89 when the suction connection 55 is placed on the valve arrangement 75 consists of the suction channel 63 delimited by the suction connection 55, the passage 62, the slot 82, the outlet opening 77, the bore 76 and the channel section 84.
- a circumferential sealing surface 87 is formed, which is used for pressure-tight contact of the sealing surface 86 formed at the free end of the suction connection 55.
- the two Sealing surfaces 87, 86 are designed so that they come flush to the system.
- the two tongues were pressed so far apart that the passage 62 was opened, as can also be seen from FIG. 5.
- the actuating surfaces 90 formed on the tongues 60 on the inner surfaces have pushed the sleeve 79 downward in FIG. 7 via the annular corner 99 formed on the sleeve 79 such that the exit opening 77 is exposed.
- FIG. 1 The mode of operation of the system according to the invention and of the vacuum pump according to the invention for this purpose is as follows according to FIG. 1:
- the lid 3 can be removed or placed on the container 1. If, for example, after filling the container space 3 of the container 1, the latter is closed by the cover 3, the system can be evacuated.
- the suction connection 55 is inserted into the outlet 85 until its sealing surface 88 (FIGS. 2 and 3) lies sealingly against the conical recess 15.
- the pin 19 engages in the partially annular sections 56, 57 of the tongues 59, 60 and presses the tongues 59, 60 apart such that the sealing surface 68 formed by the flap valve 58 is opened and thus passages 61, 62 are released. In this position, the check valve 35 is still closed since there is atmospheric air both in the container space 33 and outside.
- a control valve (not shown) formed in the vacuum pump opens in order to now leave the pressure in the container space 33 constant.
- a pressure display device formed on the device can preferably indicate to an operator that the required pressure has been reached and that the device can be switched off and removed from the valve arrangement 35.
- the valve 35 designed as a check valve closes and the flow channel 18 is closed to the atmosphere 34.
- the suction connection 55 together with the vacuum pump 64 and the drive unit 72 coupled to it can be lifted off the cover 3 without air being able to enter the container space 33 from the atmosphere 34. This is also because the vent valve 41 is also securely closed and at the same time the lid 6 is pressed firmly and sealingly against the edge 2 of the container 1 due to the vacuum force formed in the container space 33.
- the membrane 43 contracts in such a way that the pin 44 slides into the bore 45, so that only the end face 46 is visible from above. This also indicates to an operator that the correct pressure in the container space 33 has been reached.
- the food can now be kept fresh in this way under a certain predetermined vacuum.
- FIG. 7 differs from that according to FIG. 1 only in that when the suction connection 55 is placed not only the flap valve 58 is opened by the pin 19, but at the same time by the on the tongues 59, 60th trained actuating surfaces 90 of the corner edge 99 of the 7 is pressed downwards against the force of the spring 80 in such a way that the sleeve 19 moves and thereby releases the outlet opening 77, whereby the channel 89 opens to the suction channel 63 and vacuum from the container space, which is shown in FIG. 7 is located below the channel section 84, can be sucked.
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03757710A EP1673282B1 (de) | 2003-10-16 | 2003-10-16 | System zum evakuieren eines nahrungsmittelbehälters mit deckel und verfahren |
AT03757710T ATE354521T1 (de) | 2003-10-16 | 2003-10-16 | System zum evakuieren eines nahrungsmittelbehälters mit deckel und verfahren |
PCT/DE2003/003430 WO2005044667A1 (de) | 2003-10-16 | 2003-10-16 | System zum evakuieren eines nahrungsmittelbehälters, behälter mit deckel und verfahren |
DE50306614T DE50306614D1 (de) | 2003-10-16 | 2003-10-16 | System zum evakuieren eines nahrungsmittelbehälters mit deckel und verfahren |
ES03757710T ES2280788T3 (es) | 2003-10-16 | 2003-10-16 | Sistema para someter a vacio un recipiente de alimentos, recipiente con tapa y procedimiento. |
AU2003273753A AU2003273753A1 (en) | 2003-10-16 | 2003-10-16 | System for evacuating a food container, container comprising a lid, and method |
US10/882,520 US7131550B2 (en) | 2000-12-08 | 2004-07-01 | Food storage containers |
US10/882,551 US7328730B2 (en) | 2000-12-08 | 2004-07-01 | Food storage containers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2003/003430 WO2005044667A1 (de) | 2003-10-16 | 2003-10-16 | System zum evakuieren eines nahrungsmittelbehälters, behälter mit deckel und verfahren |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/457,319 Continuation-In-Part US7096893B2 (en) | 2000-12-08 | 2003-06-09 | Food storage containers |
US10/457,285 Continuation-In-Part US20040040961A1 (en) | 2000-12-08 | 2003-06-09 | Food storage containers |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/882,551 Continuation-In-Part US7328730B2 (en) | 2000-12-08 | 2004-07-01 | Food storage containers |
US10/882,520 Continuation-In-Part US7131550B2 (en) | 2000-12-08 | 2004-07-01 | Food storage containers |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005044667A1 true WO2005044667A1 (de) | 2005-05-19 |
Family
ID=34558671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/003430 WO2005044667A1 (de) | 2000-12-08 | 2003-10-16 | System zum evakuieren eines nahrungsmittelbehälters, behälter mit deckel und verfahren |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1673282B1 (de) |
AT (1) | ATE354521T1 (de) |
AU (1) | AU2003273753A1 (de) |
DE (1) | DE50306614D1 (de) |
ES (1) | ES2280788T3 (de) |
WO (1) | WO2005044667A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8966869B2 (en) | 2009-05-12 | 2015-03-03 | Ball Packaging Europe Gmbh | Method for filling food containers |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0510360A1 (de) * | 1991-04-03 | 1992-10-28 | Jankovic, Milan | Saugvorrichtung zum Erzeugen eines Unterdrucks in Behältern |
EP0644128A1 (de) | 1993-09-20 | 1995-03-22 | Heng-Te Yang | Dichtverschliessbare Dose die mittels einer Vakuumpumpe evakuiert werden kann |
WO1996007590A1 (en) * | 1994-09-05 | 1996-03-14 | Conservator B.V. I.O. | Pump assembly |
DE10060996C1 (de) | 2000-12-08 | 2002-05-02 | Braun Gmbh | Vorrichtung zum Evakuieren eines durch ein Ventil verschließbaren Aufbewahrungsbehälters für Nahrungsmittel |
-
2003
- 2003-10-16 ES ES03757710T patent/ES2280788T3/es not_active Expired - Lifetime
- 2003-10-16 AU AU2003273753A patent/AU2003273753A1/en not_active Abandoned
- 2003-10-16 AT AT03757710T patent/ATE354521T1/de not_active IP Right Cessation
- 2003-10-16 DE DE50306614T patent/DE50306614D1/de not_active Expired - Lifetime
- 2003-10-16 EP EP03757710A patent/EP1673282B1/de not_active Expired - Lifetime
- 2003-10-16 WO PCT/DE2003/003430 patent/WO2005044667A1/de active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0510360A1 (de) * | 1991-04-03 | 1992-10-28 | Jankovic, Milan | Saugvorrichtung zum Erzeugen eines Unterdrucks in Behältern |
US5195427A (en) | 1991-04-03 | 1993-03-23 | Maina Germano | Suction device to create a vacuum in containers |
EP0644128A1 (de) | 1993-09-20 | 1995-03-22 | Heng-Te Yang | Dichtverschliessbare Dose die mittels einer Vakuumpumpe evakuiert werden kann |
WO1996007590A1 (en) * | 1994-09-05 | 1996-03-14 | Conservator B.V. I.O. | Pump assembly |
DE10060996C1 (de) | 2000-12-08 | 2002-05-02 | Braun Gmbh | Vorrichtung zum Evakuieren eines durch ein Ventil verschließbaren Aufbewahrungsbehälters für Nahrungsmittel |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8966869B2 (en) | 2009-05-12 | 2015-03-03 | Ball Packaging Europe Gmbh | Method for filling food containers |
Also Published As
Publication number | Publication date |
---|---|
ATE354521T1 (de) | 2007-03-15 |
EP1673282A1 (de) | 2006-06-28 |
ES2280788T3 (es) | 2007-09-16 |
AU2003273753A1 (en) | 2005-05-26 |
DE50306614D1 (de) | 2007-04-05 |
EP1673282B1 (de) | 2007-02-21 |
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