EP3771651A1 - Detection system and detection method for detecting the actuation of a lid in a vacuum packaging machine - Google Patents
Detection system and detection method for detecting the actuation of a lid in a vacuum packaging machine Download PDFInfo
- Publication number
- EP3771651A1 EP3771651A1 EP19382670.8A EP19382670A EP3771651A1 EP 3771651 A1 EP3771651 A1 EP 3771651A1 EP 19382670 A EP19382670 A EP 19382670A EP 3771651 A1 EP3771651 A1 EP 3771651A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vat
- lid
- vacuum
- detection system
- detecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 238000009461 vacuum packaging Methods 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 101100372509 Mus musculus Vat1 gene Proteins 0.000 description 8
- 238000012856 packing Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
-
- 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
- B65B57/00—Automatic control, checking, warning, or safety devices
Definitions
- the present invention relates to a detection system and method for detecting the actuation of a lid in vacuum packing machines which can be applied to tabletop or free-standing vacuum packing machines.
- Vacuum packing machines basically consist of a vacuum pump (where the suction capacity of the pump is different depending on the model), a hood where the vacuum is generated, a sealing system, solenoid valves and an electronic or electromechanical control system.
- the food is introduced in a bag, which in turn is introduced in the hood of the packer.
- the packer then extracts air from the hood by means of a vacuum pump until reaching the level desired by the user.
- the bag is sealed and atmospheric pressure is restored in the chamber. Since the bag containing the food is sealed before restoring atmospheric pressure, it stays at the pressure desired by the user.
- Said machines usually have different models depending on the size of the food to be packed, the productivity to be obtained, or simply depending on the space where the packer is to be located, which results in the development of different machines that are larger in size (type of element to be packed) or different pumps with different suction flow rate values (depending on productivity and size).
- the user To start a packing cycle, the user must close the lid of the packer, and when the packer detects that the lid is lowered, it switches on the vacuum pump, suctioning out the air in the enclosure. It is therefore understood that a vacuum cycle starts when the lid is closed.
- a switch is used to detect the state of the lid. This switch can be visible in the upper portion, between a vat and the lid, or invisible, actuated by the hinge. This switch is connected to the control electronics of the packer which, upon receiving the signal that it has actuated, switches on the vacuum pump.
- Vacuum packers also comprise a vacuum sensor of the control electronics, the vat and the pump, which are pneumatically connected.
- the vacuum sensor can thereby detect changes in pressure in the vat due to the actuation of the pump. This allows the control electronics to determine the end of the vacuum cycle.
- an objective of the present invention is to provide a detection system and method for detecting a lid in a vacuum packing machine that does not use a switch, resulting in the cost of the packing machine being lower than conventional packing machines using a switch.
- the present invention relates to a detection system for detecting the actuation of a lid in vacuum packing machines, the vacuum packing machine comprising a vat which is closed by means of a lid, said lid comprising a sealing gasket, wherein the detection system comprises a vacuum sensor connected with the vat, which detects a pressure value in the vat, such that it is determined that the lid is closed depending on said pressure value detected by the vacuum sensor.
- said vacuum sensor is connected to control electronics.
- said vacuum sensor is connected with the vat preferably by means of a connection tube.
- the detection system according to the present invention also preferably comprises a vacuum pump connected to said vat, for example, by means of a suction tube.
- said lid is assembled in said vat in an articulated manner by means of one or more hinges.
- a second aspect of the present invention relates to a detection method for detecting the actuation of a lid in vacuum packing machines, the vacuum packing machine comprising a vat which is closed by means of a lid, said lid comprising a sealing gasket, the method comprising the following steps:
- the vacuum pump is switched off.
- said first predetermined time period is comprised between 0 and 1 second
- the second predetermined time period is comprised between 0 and 10 seconds.
- the main advantage of the present invention is a reduction in costs, greater ease of assembly and a higher reliability as movable parts are eliminated in the apparatus.
- the present invention relates to a vacuum packing machine comprising a detection system for detecting the actuation of the lid without the use of a switch.
- the vacuum sensor of the actual packing machine is used to detect that the user has closed the lid, and the vacuum cycle can thus start.
- the vacuum packing machine comprises:
- the vacuum packing machine further comprises a chassis, casing, solenoid valves, sealing bar, transformer, etc., which, while necessary for the remaining functions of the packing machine, are conventional and not part of the present invention. Therefore, for the sake of simplicity, these additional elements of the packing machine will not be described in detail.
- control electronics 7 constantly monitors the value of the vacuum sensor 8.
- the vacuum sensor 8 Since it is attached to the vacuum sensor 8 by means of the connection tube 9, the vacuum sensor 8 can detect this slight and sudden increase in pressure.
- control electronics switches on the vacuum pump 5 for a time T.
- the vacuum pump 5 Since the vacuum pump 5 is connected to the vat 1 by means of the suction tube 6, if the lid 2 is suitably closed, at the end of this time T the vacuum sensor 8 should detect a decrease in pressure of amplitude A in the vat 1.
- Figure 3 shows a correct detection process, in which an increase in pressure A' in an interval T', followed by a decrease in pressure A in an interval T, is detected.
- Figure 4 thereby shows a failed detection process, in which an increase in pressure A' in an interval T' is detected. It can be seen that at the end of time T, the pressure has not dropped below the amplitude A, so the pump is stopped and the original pressure is restored.
- the main advantage of the present invention is a reduction in costs, greater ease of assembly and a higher reliability as movable parts are eliminated in the apparatus.
Abstract
Description
- The present invention relates to a detection system and method for detecting the actuation of a lid in vacuum packing machines which can be applied to tabletop or free-standing vacuum packing machines.
- Vacuum packing machines basically consist of a vacuum pump (where the suction capacity of the pump is different depending on the model), a hood where the vacuum is generated, a sealing system, solenoid valves and an electronic or electromechanical control system.
- To vacuum pack a food by means of one of these packers, the food is introduced in a bag, which in turn is introduced in the hood of the packer. The packer then extracts air from the hood by means of a vacuum pump until reaching the level desired by the user.
- Once the air is extracted, the bag is sealed and atmospheric pressure is restored in the chamber. Since the bag containing the food is sealed before restoring atmospheric pressure, it stays at the pressure desired by the user.
- Said machines usually have different models depending on the size of the food to be packed, the productivity to be obtained, or simply depending on the space where the packer is to be located, which results in the development of different machines that are larger in size (type of element to be packed) or different pumps with different suction flow rate values (depending on productivity and size).
- To start a packing cycle, the user must close the lid of the packer, and when the packer detects that the lid is lowered, it switches on the vacuum pump, suctioning out the air in the enclosure. It is therefore understood that a vacuum cycle starts when the lid is closed.
- In the current state of the art, a switch is used to detect the state of the lid. This switch can be visible in the upper portion, between a vat and the lid, or invisible, actuated by the hinge. This switch is connected to the control electronics of the packer which, upon receiving the signal that it has actuated, switches on the vacuum pump.
- Vacuum packers also comprise a vacuum sensor of the control electronics, the vat and the pump, which are pneumatically connected. The vacuum sensor can thereby detect changes in pressure in the vat due to the actuation of the pump. This allows the control electronics to determine the end of the vacuum cycle.
- It is evident that the need to incorporate a switch for detecting the state of the lid increases the cost of the vacuum packing machine.
- Therefore, an objective of the present invention is to provide a detection system and method for detecting a lid in a vacuum packing machine that does not use a switch, resulting in the cost of the packing machine being lower than conventional packing machines using a switch.
- The mentioned drawbacks are solved with the detection system and method for detecting the actuation of a lid of the invention, while presenting other advantages described below.
- According to a first aspect, the present invention relates to a detection system for detecting the actuation of a lid in vacuum packing machines, the vacuum packing machine comprising a vat which is closed by means of a lid, said lid comprising a sealing gasket, wherein the detection system comprises a vacuum sensor connected with the vat, which detects a pressure value in the vat, such that it is determined that the lid is closed depending on said pressure value detected by the vacuum sensor.
- Advantageously, said vacuum sensor is connected to control electronics.
- Furthermore, said vacuum sensor is connected with the vat preferably by means of a connection tube.
- The detection system according to the present invention also preferably comprises a vacuum pump connected to said vat, for example, by means of a suction tube.
- According to a preferred embodiment, said lid is assembled in said vat in an articulated manner by means of one or more hinges.
- A second aspect of the present invention relates to a detection method for detecting the actuation of a lid in vacuum packing machines, the vacuum packing machine comprising a vat which is closed by means of a lid, said lid comprising a sealing gasket, the method comprising the following steps:
- constantly monitoring the pressure inside said vat;
- detecting if the pressure inside the vat has increased in a first predetermined time period;
- if an increase in pressure inside the vat is detected, switching on a vacuum pump for a second predetermined time period;
- detecting if the pressure inside the vat has decreased after switching on the vacuum pump; and
- if a decrease in pressure inside the vat has been detected, determining that the lid is closed.
- Advantageously, in the event that a decrease in pressure inside the vat is not detected after said second predetermined time period, the vacuum pump is switched off.
- According to a preferred embodiment, said first predetermined time period is comprised between 0 and 1 second, and the second predetermined time period is comprised between 0 and 10 seconds.
- Furthermore, according to said preferred embodiment, it is determined that there is an increase in pressure if said increase is comprised between 0 and 10 kPa, and it is determined that there is a decrease in pressure if said decrease is comprised between 0 and 100 kPa.
- With respect to switch-based lid detection systems, the main advantage of the present invention is a reduction in costs, greater ease of assembly and a higher reliability as movable parts are eliminated in the apparatus.
- To better understand what has been set forth, several drawings are attached in which a practical embodiment is schematically depicted merely by way of non-limiting example.
-
Figure 1 is a perspective view of a vacuum packing machine incorporating the detection system for detecting the actuation of a lid according to the present invention; -
Figure 2 is a block diagram of the steps of the detection method for detecting the actuation of a lid according to the present invention; -
Figure 3 is a diagram showing a correct detection process, wherein it is detected that the lid is closed; and -
Figure 4 is a diagram showing an incorrect detection process, wherein it is detected that the lid is open. - The present invention relates to a vacuum packing machine comprising a detection system for detecting the actuation of the lid without the use of a switch. According to the present invention, the vacuum sensor of the actual packing machine is used to detect that the user has closed the lid, and the vacuum cycle can thus start.
- In a preferred embodiment shown in
Figure 1 , the vacuum packing machine comprises: - a
vat 1, where the food to be vacuum packed is placed, - a
lid 2 provided with sealinggasket 3 and attached to thevat 1 by means of one ormore hinges 4, - a
vacuum pump 5 connected to thevat 1 by means of afirst suction tube 6, -
control electronics 7 provided with avacuum sensor 8, and - a
connection tube 9 connecting thevat 1 with thevacuum sensor 8. - The vacuum packing machine further comprises a chassis, casing, solenoid valves, sealing bar, transformer, etc., which, while necessary for the remaining functions of the packing machine, are conventional and not part of the present invention. Therefore, for the sake of simplicity, these additional elements of the packing machine will not be described in detail.
- As shown in
Figure 2 , thecontrol electronics 7 constantly monitors the value of thevacuum sensor 8. - When the user closes the
lid 2, because of the sealing of the sealinggasket 3 with thevat 1, a slight and rapid rise in the pressure value in thevat 1 takes place. - Since it is attached to the
vacuum sensor 8 by means of theconnection tube 9, thevacuum sensor 8 can detect this slight and sudden increase in pressure. - If this increase is within a certain interval of time T' and amplitude A', the control electronics switches on the
vacuum pump 5 for a time T. - Since the
vacuum pump 5 is connected to thevat 1 by means of thesuction tube 6, if thelid 2 is suitably closed, at the end of this time T thevacuum sensor 8 should detect a decrease in pressure of amplitude A in thevat 1. - If this drop in pressure has not occurred, it would mean that the
lid 2 has not been suitably closed, and thecontrol electronics 7 switches off thevacuum pump 5 and returns to the initial point of the detection algorithm. -
Figure 3 shows a correct detection process, in which an increase in pressure A' in an interval T', followed by a decrease in pressure A in an interval T, is detected. -
Figure 4 thereby shows a failed detection process, in which an increase in pressure A' in an interval T' is detected. It can be seen that at the end of time T, the pressure has not dropped below the amplitude A, so the pump is stopped and the original pressure is restored. - According to a preferred embodiment:
- 0 < T' < 1 s
- 0 < A' < 10 kPa
- 0 < T < 10 s
- 0 < A < 100 kPa
- As indicated above, with respect to switch-based lid detection systems, the main advantage of the present invention is a reduction in costs, greater ease of assembly and a higher reliability as movable parts are eliminated in the apparatus.
- Despite having made reference to a specific embodiment of the invention, it is evident to one skilled in the art that the described system and method are susceptible to a number of variations and modifications, and all the mentioned details mentioned can be replaced with other technically equivalent details without departing from the scope of protection defined by the attached claims.
Claims (12)
- A detection system for detecting the actuation of a lid (2) in vacuum packing machines, the vacuum packing machine comprising a vat (1) which is closed by means of a lid (2), said lid (2) comprising a sealing gasket (3), characterised in that the detection system comprises a vacuum sensor (8) connected with the vat (1), which detects a pressure value in the vat (1), such that it is determined that the lid (2) is closed depending on said pressure value detected by the vacuum sensor (8).
- The detection system according to claim 1, wherein said vacuum sensor (8) is connected to control electronics (7).
- The detection system according to claim 1, wherein said vacuum sensor (8) is connected with the vat (1) by means of a connection tube (9).
- The detection system according to claim 1, also comprising a vacuum pump (5) connected to said vat (1).
- The detection system according to claim 4, wherein the vacuum pump (5) is connected to said vat (1) by means of a suction tube (6).
- The detection system according to claim 1, wherein said lid (2) is assembled in said vat (1) in an articulated manner by means of one or more hinges (4).
- A detection method for detecting the actuation of a lid (2) in vacuum packing machines, the vacuum packing machine comprising a vat (1) which is closed by means of a lid (2), said lid (2) comprising a sealing gasket (3), characterised in that it comprises the following steps:- constantly monitoring the pressure inside said vat (1);- detecting if the pressure inside the vat (1) has increased in a first predetermined time period;- if an increase in pressure inside the vat (1) is detected, switching on a vacuum pump (5) for a second predetermined time period;- detecting if the pressure inside the vat (1) has decreased after switching on the vacuum pump (5); and- if a sufficient decrease in pressure inside the vat (1) has been detected, determining that the lid (2) is closed.
- The detection method according to claim 7, wherein in the event that a sufficient decrease in pressure inside the vat (1) is not detected after said second predetermined time period, the vacuum pump (5) is switched off.
- The detection method according to claim 7, wherein said first predetermined time period is comprised between 0 and 1 second.
- The detection method according to claim 7 or 8, wherein the second predetermined time period is comprised between 0 and 10 seconds.
- The detection method according to claim 7, wherein it is determined that there is an increase in pressure if said increase is comprised between 0 and 10 kPa.
- The detection method according to claim 7, wherein it is determined that there is a decrease in pressure if said decrease is comprised between 0 and 100 kPa.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19382670.8A EP3771651B1 (en) | 2019-08-01 | 2019-08-01 | Detection system and detection method for detecting the actuation of a lid in a vacuum packaging machine |
ES19382670T ES2914500T3 (en) | 2019-08-01 | 2019-08-01 | Detection system and detection method for detecting the actuation of a lid in a vacuum packaging machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19382670.8A EP3771651B1 (en) | 2019-08-01 | 2019-08-01 | Detection system and detection method for detecting the actuation of a lid in a vacuum packaging machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3771651A1 true EP3771651A1 (en) | 2021-02-03 |
EP3771651B1 EP3771651B1 (en) | 2022-03-02 |
Family
ID=67658459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19382670.8A Active EP3771651B1 (en) | 2019-08-01 | 2019-08-01 | Detection system and detection method for detecting the actuation of a lid in a vacuum packaging machine |
Country Status (2)
Country | Link |
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EP (1) | EP3771651B1 (en) |
ES (1) | ES2914500T3 (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3832824A (en) * | 1973-06-29 | 1974-09-03 | Grace W R & Co | Apparatus and method for evacuating packages |
US5655357A (en) * | 1995-05-02 | 1997-08-12 | Tilia International, Inc. | Exhaust flow rate vacuum sensor |
US6256968B1 (en) * | 1999-04-13 | 2001-07-10 | Tilia International | Volumetric vacuum control |
US20050011166A1 (en) * | 2001-02-09 | 2005-01-20 | Maina Germano | Machine for vacuum packing products in plastic bags or rigid containers |
EP1925556A2 (en) * | 2006-11-24 | 2008-05-28 | Marziano Salvaro | Apparatus for the vacuum packaging of food products |
US20140069057A1 (en) * | 2012-09-10 | 2014-03-13 | Multivac Sepp Haggenmuller Gmbh & Co. Kg | Method for operating a chamber packaging machine |
US20180257798A1 (en) * | 2012-03-27 | 2018-09-13 | Tosei Corporation | Vacuum packaging method and vacuum packaging apparatus |
JP6498955B2 (en) * | 2015-02-16 | 2019-04-10 | ホシザキ株式会社 | Vacuum packaging machine |
-
2019
- 2019-08-01 EP EP19382670.8A patent/EP3771651B1/en active Active
- 2019-08-01 ES ES19382670T patent/ES2914500T3/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3832824A (en) * | 1973-06-29 | 1974-09-03 | Grace W R & Co | Apparatus and method for evacuating packages |
US5655357A (en) * | 1995-05-02 | 1997-08-12 | Tilia International, Inc. | Exhaust flow rate vacuum sensor |
US6256968B1 (en) * | 1999-04-13 | 2001-07-10 | Tilia International | Volumetric vacuum control |
US20050011166A1 (en) * | 2001-02-09 | 2005-01-20 | Maina Germano | Machine for vacuum packing products in plastic bags or rigid containers |
EP1925556A2 (en) * | 2006-11-24 | 2008-05-28 | Marziano Salvaro | Apparatus for the vacuum packaging of food products |
US20180257798A1 (en) * | 2012-03-27 | 2018-09-13 | Tosei Corporation | Vacuum packaging method and vacuum packaging apparatus |
US20140069057A1 (en) * | 2012-09-10 | 2014-03-13 | Multivac Sepp Haggenmuller Gmbh & Co. Kg | Method for operating a chamber packaging machine |
JP6498955B2 (en) * | 2015-02-16 | 2019-04-10 | ホシザキ株式会社 | Vacuum packaging machine |
Also Published As
Publication number | Publication date |
---|---|
EP3771651B1 (en) | 2022-03-02 |
ES2914500T3 (en) | 2022-06-13 |
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