CN214084966U - Air-conditioning packaging machine - Google Patents
Air-conditioning packaging machine Download PDFInfo
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- CN214084966U CN214084966U CN202021962982.XU CN202021962982U CN214084966U CN 214084966 U CN214084966 U CN 214084966U CN 202021962982 U CN202021962982 U CN 202021962982U CN 214084966 U CN214084966 U CN 214084966U
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 18
- 238000004378 air conditioning Methods 0.000 title description 6
- 239000011261 inert gas Substances 0.000 claims abstract description 116
- 238000009448 modified atmosphere packaging Methods 0.000 claims abstract description 61
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000005086 pumping Methods 0.000 abstract description 3
- 235000013305 food Nutrition 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 229920006280 packaging film Polymers 0.000 description 3
- 239000012785 packaging film Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 235000014102 seafood Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The application discloses a modified atmosphere packaging machine, which comprises an upper film and a lower film for packaging articles, and an upper cavity and a lower cavity which are arranged between the upper film and the lower film, wherein the lower cavity can be combined with or separated from the upper cavity, the upper cavity and the lower cavity are respectively provided with an upper concave inner cavity and a lower concave inner cavity, a heating plate for pressing the peripheral parts of the upper film and the lower film is arranged in the upper concave inner cavity to realize the packaging of the articles, when the lower cavity body and the upper cavity body are combined, a first space between the upper film and the upper concave cavity body, a second space between the upper film and the lower film and a third space between the lower film and the lower concave cavity body are formed in the modified atmosphere packaging machine, the upper cavity body is provided with a channel for pumping air in the first space and the second space, a channel for filling inert gas into the first space and the second space after the vacuum degree of the second space meets the requirement, and the lower cavity body is provided with a channel for pumping air in the third space and a channel for filling inert gas into the third space. The packaging machine and the method can reduce equipment cost and processing cost.
Description
Technical Field
The application relates to the technical field of packaging machinery, in particular to an air-conditioning packaging machine.
Background
Now to maintain the freshness of fresh food materials such as vegetables, fruits, seafood and meat, it is common practice to use a modified atmosphere packaging machine to package the fresh food materials with a packaging film to form a package in which air is extracted and an inert gas is filled, so as to maintain the freshness and prolong the shelf life of the fresh food materials.
Fig. 4 shows a schematic view of a prior art modified atmosphere packaging machine. As shown in fig. 4, the modified atmosphere packaging machine comprises an upper chamber 1 and a lower chamber 2 which are arranged oppositely, and the lower chamber 2 can move up and down relative to the upper chamber 1 to be combined with the upper chamber 1 or leave the upper chamber 1. The upper cavity 1 and the lower cavity 2 are respectively provided with an upper concave cavity 11 which is opened downwards and a lower concave cavity 21 which is opened upwards, and a heating plate which can move up and down is arranged in the upper concave cavity 11. When the fresh food material is to be packaged, the fresh food material to be packaged, an upper packaging film (referred to as an upper film for short) above the fresh food material and a lower packaging film (referred to as a lower film for short) below the upper film and bearing the fresh food material move together from the outside of the modified atmosphere packaging machine into the modified atmosphere packaging machine and are positioned between an upper cavity 1 and a lower cavity 2, wherein the fresh food material and the lower film are arranged in the lower cavity 2, and the upper film is close to the lower end face of the lower cavity 1. Before entering the modified atmosphere packaging machine, air holes are punched in advance on both sides of the lower film 6 across the direction in which it enters and leaves the modified atmosphere packaging machine. A first air passage 12 and a first inert gas passage 13 communicating the upper concave cavity 11 with the outside of the modified atmosphere packaging machine are respectively provided on both sides of the upper chamber 1 as viewed from the direction in which the lower film moves into and out of the modified atmosphere packaging machine, and a third air passage 24 and a third inert gas passage 25 are respectively provided on the flanks on both sides of the lower chamber 2 opposite to the air holes of the lower film 6. The lower chamber 2 is provided at the bottom of the lower concave inner chamber 21 with a second air passage 22 and a second inert gas passage 23 which communicate the lower concave inner chamber 21 with the outside of the air conditioning packing machine.
When the fresh food material starts to be packed, the lower cavity 2 moves to be integrated with the upper cavity 1, thereby forming a first space between the upper film 5 and the upper concave inner cavity 11, a second space between the upper film 5 and the lower film 6, and a third space between the lower film 6 and the lower concave inner cavity 21. A set of vacuum equipment and inert gas filling equipment is used to draw air of the second space through the air holes of the lower membrane 6 via the third air passage 24 and the third inert gas passage 25, respectively, and then fill the inert gas. In order that the shape of the lower membrane 6 remains unchanged during the time when the air of the second space is drawn away and the inert gas is filled thereto, a second set of vacuum device and inert gas filling device needs to be used to draw away the air of the second space and fill it with the inert gas while drawing away the air of the third space and then filling it with the inert gas via the second air passage 22 and the second inert gas passage 23, respectively. In order that the air holes on the lower membrane 6 are not blocked by the upper membrane 5 during the time of drawing off the air of the second space and filling it with the inert gas, a third set of vacuum device and inert gas filling device needs to be used to draw off the air of the first space and then fill it with the inert gas via the first air passage 12 and the first inert gas passage 13, respectively, while drawing off the air of the second space and filling it with the inert gas.
It can be seen that the existing modified atmosphere packaging machines require three sets of vacuum pumping equipment and three sets of inert gas charging equipment, which increases the cost of the equipment. Meanwhile, the existing modified atmosphere packaging machine needs to be provided with the third air passage 24 and the third inert gas passage 25 on the lower cavity 2, which increases the processing procedures of the lower cavity 2 and thus increases the processing cost of the modified atmosphere packaging machine.
SUMMERY OF THE UTILITY MODEL
In view of the above, embodiments of the present application provide a modified atmosphere packaging machine, which can reduce equipment cost and processing cost.
A modified atmosphere packaging machine according to an embodiment of the present application includes an upper chamber and a lower chamber opposed to each other in an up-and-down direction, an upper film and a lower film for packaging an article being placed therebetween, wherein the lower chamber is movable up and down to be combined with or separated from the upper chamber, the upper chamber and the lower chamber are respectively provided with an upper concave chamber opened downward and a lower concave chamber opened upward for accommodating the lower film, a heating plate movably provided in the upper concave chamber for pressing peripheral portions of the upper film and the lower film together to package the article, and a first space formed between the upper film and the upper concave chamber, a second space formed between the upper film and the lower film, and a third space formed between the lower film and the lower concave chamber are formed in the modified atmosphere packaging machine when the lower chamber and the upper chamber are combined, wherein the upper chamber is provided with a first air passage for drawing air in the first space therethrough and drawing air in the second space therethrough through the first film hole of the upper film and the first space, and, a first inert gas passage for filling the first space with an inert gas therethrough and also filling the second space with an inert gas therethrough through second film holes of the first space and the upper film after the degree of vacuum of the second space reaches a set requirement, and the lower chamber is provided with a second air passage for drawing air in the third space therethrough while air in the second space is drawn away, and, a second inert gas passage for filling the third space with an inert gas therethrough while filling the second space with an inert gas.
In view of the above, the modified atmosphere packaging machine of the present application draws off air in both the first space and the second space via a single air passage and draws off air in the third space via another air passage by means of the first film holes of the upper film, and charges both the first space and the second space with inert gas via a single inert gas passage and charges the third space with inert gas via another inert gas passage by means of the second film holes of the upper film, and therefore, compared with the prior art, the modified atmosphere packaging machine of the present application can draw off air in the first, second, and third spaces and charge inert gas thereto by only two sets of vacuum devices and two sets of inert gas charging devices, and does not require a passage for drawing off air in the second space and a passage for charging inert gas into the second space to be provided on the lower chamber, thereby reducing equipment costs and tooling costs. In addition, the mechanical strength of the lower chamber can be ensured only by the presence of the third air passage, so that the wall thickness of the lower chamber edge is at least 1.2-1.5 times larger than the size of the third air passage. The third air channel is eliminated, the wall thickness of the edge of the lower cavity can be made smaller, and the size of the waste edge of the envelope is reduced, so that the envelope is saved.
Preferably, the upper concave cavity has a larger opening than the lower concave cavity, and the first and second film holes are positioned in the upper film so as to be outside the heating plate and inside the upper concave cavity; and when the upper membrane and the lower membrane are placed between the upper cavity and the lower cavity, the first membrane hole and the second membrane hole are located within a projection of the opening of the upper concave inner cavity on a first plane and are located outside a projection of the opening of the lower concave inner cavity on the first plane, and the first plane is a plane located between the upper cavity and the lower cavity.
The first film hole and the second film hole are arranged on the upper film, are arranged outside the heating plate and are arranged in the upper concave inner cavity, but are arranged on the upper frame of the lower concave inner cavity, so that when the upper concave inner cavity and the lower concave inner cavity are combined, the heating plate presses and seals the upper film and the lower film between the first film hole and the second film hole on the upper frame of the lower concave inner cavity, and then the upper film and the lower film with the first film hole and the second film hole are cut off; the arrangement is such that the first film hole and the second film hole are pressed against the peripheral portion of the lower film by the heating plate when the packaging of the article is effected, so that the inert gas in the package obtained by packaging the article with the upper film and the lower film does not leak out through the first and second film holes or the outside air enters the package through the first and second film holes.
Preferably, the first air passage and the first inert gas passage are respectively disposed on two sides of the upper cavity body crossing the first direction, and the first film hole and the second film hole are respectively disposed on two sides of the upper film crossing the first direction, wherein the first direction is a direction in which the upper film and the lower film enter and leave the modified atmosphere packaging machine, and the second air passage and the second inert gas passage are disposed at the bottom of the lower concave cavity.
By the above, disposing the first air passage and the first inert gas passage on both sides of the upper chamber body across the first direction, respectively, and disposing the first film hole and the second film hole on both sides of the upper film across the first direction, respectively, can help to completely extract air in the second space and fill the entire space of the second space with inert gas.
Preferably, one opening of each of the first air passage and the first inert gas passage is provided on a lower end surface of the upper chamber.
By the way, one opening of each of the first air channel and the first inert gas channel is arranged on the lower end face of the upper cavity, the whole width of the modified atmosphere packaging machine can be reduced, and meanwhile, operators can stand on two sides of the modified atmosphere packaging machine conveniently to operate.
Preferably, the modified atmosphere packaging machine further comprises: a first vacuum apparatus connected to the first air passage to draw air in the first space and the second space; a second vacuum apparatus connected to the second air passage to draw air in the third space; a first inert gas filling device connected to the first inert gas passage to fill the first space and the second space with an inert gas; and a second inert gas filling device connected to the second inert gas passage to fill the third space with an inert gas.
Preferably, the modified atmosphere packaging machine further comprises: the vacuum detection element is used for detecting the vacuum degrees of the first space and the second space; and a pressure detecting element for detecting the pressure in the first and second spaces.
Drawings
Fig. 1 is a side view of a modified atmosphere packaging machine according to an embodiment of the present application;
fig. 2 is a top view of a modified atmosphere packaging machine according to an embodiment of the present application;
FIG. 3 shows a schematic flow diagram of a modified atmosphere packaging method according to an embodiment of the application;
fig. 4 is a schematic structural diagram of a conventional modified atmosphere packaging machine.
Description of reference numerals:
1 upper cavity, 2 lower cavity, 3 heating plate, 5 upper film, 6 lower film,
11 an upper concave cavity, 12 a first air passage, 13 a first inert gas passage,
a recessed cavity 21, a second air passage 22, a second inert gas passage 23,
24 a third air passage, 25 a third inert gas passage,
51 first film hole, 52 second film hole, 100 modified atmosphere packaging machine, 102 article.
Detailed Description
Various embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 and 2 show schematic views of a modified atmosphere packaging machine according to an embodiment of the present application. As shown in fig. 1, the modified atmosphere packaging machine 100 may include an upper chamber 1 and a lower chamber 2 which are arranged opposite to each other, wherein the upper chamber 1 is fixedly disposed, and the lower chamber 2 can be driven to move up and down to be combined with or separated from the upper chamber 1. In the process of packaging an article 102 such as a raw fresh food material by the modified atmosphere packaging machine 100, an upper film 5 and a lower film 6 for packaging the article 102 are moved from outside the modified atmosphere packaging machine 100 into the modified atmosphere packaging machine 100 and are positioned between the upper chamber 1 and the lower chamber 2, wherein the packaged article 102 is carried on the lower film 6, and the upper film 5 is positioned above the article 102. Before moving into the modified atmosphere packaging machine 100, the upper film 5 is punched with first and second film holes 51, 52 on both sides across the direction in which it moves into the modified atmosphere packaging machine 100. In addition, the number of the first film holes and the second film holes in the moving direction of the product is determined by the size of the product. The larger the typical product, the greater the number of membrane pores.
The upper chamber 1 and the lower chamber 2 are provided with an upper concave inner chamber 11 opened downward and a lower concave inner chamber 21 opened upward, respectively. When the upper and lower membranes 5, 6 are positioned between the upper and lower chambers 1, 2, the lower membrane 6 carrying the article 102 is positioned within the recessed cavity 21. A first air passage 12 and a first inert gas passage 13 for connecting the upper concave inner cavity 11 and the outside of the air conditioning packing machine 100 are provided in the upper chamber 1. A second air passage 22 and a second inert gas passage 23 for connecting the recessed inner cavity 21 and the outside of the air conditioning packing machine 100 are provided in the lower chamber 2.
When the article 102 is to be packed, the lower chamber 2 is driven to move upward to be united with the upper chamber 1, thereby forming a first space a between the upper film 5 and the upper concave cavity 11, a second space B between the upper film 5 and the lower film 6, and a third space C between the lower film 6 and the lower concave cavity 21.
The first air passage 12 is used for drawing air of the first space a by a first vacuum apparatus (not shown) connected thereto, and is also used for drawing air of the second space B by the first vacuum apparatus through the first space a and the first film hole 51 of the upper film 5. The second air passage 22 serves to draw air of the third space C by a second vacuum apparatus (not shown) connected thereto while air of the second space B is drawn.
The first inert gas passage 13 is used for filling the first space a with an inert gas by a first inert gas filling device (not shown) connected thereto after the degree of vacuum of the second space B reaches a set requirement, and is also used for filling the second space B with an inert gas by the first inert gas filling device through the first space a and the second film holes 52 of the upper film 5. The second inert gas channel 23 is used to fill the third space C with inert gas by a second inert gas filling device (not shown) connected thereto while the second space B is filled with inert gas. In the present embodiment, after the degree of vacuum of the second space B reaches the set requirement, the air of the first space a and the second space B may be stopped being drawn through the first air passage 12 and the air of the third space C may be stopped being drawn through the second air passage 22, or the air of the first space a and the second space B may still be continuously drawn through the first air passage 12 for a while and the air of the third space C may still be drawn through the second air passage 22 for a while.
The upper concave cavity 11 is provided with a heating plate 3 which can move up and down, and is used for pressing the peripheral parts of the upper film 5 and the lower film 6 together by downward movement to package the article 102 after the second space B is filled with inert gas so that the pressure of the second space B reaches the set pressure.
The modified atmosphere packaging machine 100 of the present embodiment draws off the air in both the first space a and the second space B via the first air passage 12 and the air in the third space C via the second air passage 22 by means of the first film holes 51 of the upper film 5, and charges the inert gas into both the first space a and the second space B via the first inert gas passage 13 and the inert gas into the third space C via the second inert gas passage 23 by means of the second film holes 52 of the upper film 5, and therefore, the modified atmosphere packaging machine 100 of the present embodiment can draw off and charge the air in the first space a, the second space B and the third space C with the inert gas only by two sets of vacuum devices (i.e., the first vacuum device and the second vacuum device) and two sets of inert gas charging devices (i.e., the first inert gas charging device and the second inert gas charging device), and does not require to provide the passages for drawing off the air in the second space B and for charging the inert gas into the second space B on the lower chamber 2 The space B is filled with a passage of inert gas, thereby reducing equipment cost and processing cost.
In some embodiments, as shown in fig. 1, the opening of the upper concave cavity 11 is arranged to be larger than the opening of the lower concave cavity 21, and the positions of the first film holes 51 and 52 in the upper film 5 are arranged such that when the upper film 5 and the lower film 6 are placed between the upper cavity 1 and the lower cavity 2, the first film holes 51 and 52 are located inside the upper concave cavity 11 and outside the heating plate, and the projection of the opening of the upper concave cavity 11 on a first plane, which is a plane located between the upper cavity 1 and the lower cavity 2, and the projection of the opening of the lower concave cavity 21 on the first plane are located outside. Thereby, the first film holes 51 and 52 are located in the peripheral portion of the upper film 5 and the first film holes 51 and 52 are pressed by the heating plate 3 outside the peripheral portion of the lower film 6 when the packaging of the article 102 is effected, so that the inert gas in the package obtained by packaging the article 102 with the upper film 5 and the lower film 6 does not leak out through the first film holes 51 and 52 or the outside air enters the package through the first film holes 51 and 52.
Further, in other embodiments, the first film holes 51 and 52 may be located not in the peripheral portion of the upper film 5 but in any other suitable portion of the upper film 5 as long as the air of the second space B can be pumped out through the first space a and the first film holes 51 of the upper film 5 via the first air passage 12 and the inert gas can be charged into the second space B through the first space a and the second film holes 52 of the upper film 5 via the first inert gas passage 13. In this case, in order that the inert gas in the package obtained by packaging the article 102 with the upper film 5 and the lower film 6 does not leak out through the first film holes 51 and 52 or external air enters into the package through the first film holes 51 and 52, the first film holes 51 and 52 may be closed by any suitable means, such as, but not limited to, providing a suitable device in the upper concave cavity 11 to close the first film holes 51 and 52 with a film patch.
In some embodiments, as shown in fig. 1, the first air passage 12 and the first inert gas passage 13 are respectively provided on both sides of the upper chamber 1 across a first direction, which is a direction in which the upper film 5 and the lower film 6 enter and exit the modified atmosphere packaging machine 100, and the first film hole 51 and the second film hole 52 are respectively provided on both sides of the upper film 5 across the first direction, and the second air passage 22 and the second inert gas passage 23 are provided on the bottom of the lower concave inner chamber 21. The provision of the first air passage 12 and the first inert gas passage 13 on both sides of the upper chamber 1 across the first direction and the provision of the first film hole 51 and the second film hole 52 on both sides of the upper film 5 across the first direction, respectively, can help to purge the air in the second space B and fill the entire space of the second space B with the inert gas.
Furthermore, in some other embodiments, the first air channel 12 and the first inert gas channel 13 may not be respectively disposed on two sides of the upper cavity 1 across the first direction, the first film hole 51 and the second film hole 52 are not respectively disposed on two sides of the upper film 5 across the first direction, and the second air channel 22 and the second inert gas channel 23 are not disposed on the bottom of the recessed inner cavity 21, but any other suitable manner is adopted to dispose the positions of the first air channel 12 and the first inert gas channel 13 in the upper cavity 1, the positions of the first film hole 51 and the second film hole 52 in the upper film 5, and the positions of the second air channel 22 and the second inert gas channel 23 in the lower cavity 2.
In some embodiments, the first air passage 12 and the first inert gas passage 13 may be disposed on the same side.
In some embodiments, as shown in fig. 1, one opening of each of the first air passage 12 and the first inert gas passage 13 is provided on the lower end surface of the upper chamber 1, and the other opening of each of the first air passage 12 and the first inert gas passage 13 is provided at the upper concave inner cavity 11. By providing one of the openings of the first air passageway 12 and the first inert gas passageway 13 on the lower end surface of the upper chamber 1, the overall width of the modified atmosphere packaging machine 100 is reduced, while facilitating the operation of the operator standing on both sides of the modified atmosphere packaging machine 100.
Further, in other embodiments, one of the openings of each of the first air passage 12 and the first inert gas passage 13 may be provided on any suitable portion of the upper chamber 1 facing the outside of the modified atmosphere packaging machine 100, such as, but not limited to, the upper end surface, the left and right end surfaces, the front and rear end surfaces, and the like of the upper chamber 1.
In some embodiments, the modified atmosphere packaging machine 100 can include the first vacuum apparatus connected to the first air passageway 12, the second vacuum apparatus connected to the second air passageway 22, the first inert gas charging apparatus connected to the first inert gas passageway 13, and the second inert gas charging apparatus connected to the second inert gas passageway 23. In addition, in other embodiments, the first vacuum apparatus, the second vacuum apparatus, the first inert gas filling apparatus, and the second inert gas filling apparatus may not be part of the modified atmosphere packaging machine 100.
In some embodiments, the modified atmosphere packaging machine 100 may include a vacuum detecting element (not shown) for detecting the degree of vacuum of the first and second spaces a and B, and a pressure detecting element (not shown) for detecting the pressure in the first and second spaces a and B, so as to determine whether the degree of vacuum of the second space B reaches a set requirement and whether the pressure in the second space B reaches a set pressure. Such as, but not limited to, a vacuum sensor or the like, for example, but not limited to, located in the first space a, the second space B or the first air passage 12. Such as, but not limited to, a pressure sensor or the like, for example, but not limited to, located in the first space a, the second space B or the first air passage 12. In addition, in other embodiments, the vacuum sensing element and the pressure sensing element may not be part of the modified atmosphere packaging machine 100.
Figure 3 shows a schematic flow diagram of a modified atmosphere packaging method according to an embodiment of the present application. The modified atmosphere packaging method shown in fig. 3 utilizes a modified atmosphere packaging machine 100 to effect packaging of an item 102. As shown in fig. 3, the modified atmosphere packaging method may include steps S302 to S310.
In step S302, the lower chamber 2 of the mobile modified atmosphere packaging machine 100 is separated from the upper chamber 1 to move and place the upper and lower films 5 and 6 between the upper and lower chambers 1 and 2, and the article 102 to be packaged is placed in the lower film 6, the upper film 5 having been previously configured with the first and second film holes 51 and 52.
In step S304, the article 102 to be packaged is placed in the lower film 6, then the upper film 5, the lower film 6 are placed between the upper chamber 1 and the lower chamber 2, and the lower chamber 2 is moved to be united with the upper chamber 1 to form a first space a formed between the upper film 5 and the upper concave chamber 11, a second space B formed between the upper film 5 and the lower film 6, and a third space C formed between the lower film 6 and the lower concave chamber 21 in the modified atmosphere packaging machine 100.
In step S306, the air in the first space a is drawn through the first air passage 12 of the upper chamber 1 and the air in the second space B is also drawn through the first film hole 51 of the upper film 5 and the first space a through the first air passage 12, and the air in the third space C is drawn through the second air passage 22 of the lower chamber 2 while the air in the second space B is drawn.
In step S308, after the degree of vacuum of the second space B reaches the set requirement, the inert gas is filled into the first space a through the first inert gas channel 13 of the upper chamber 1 and also into the second space B through the first space a and the second film holes 52 of the upper film 5 through the first inert gas channel 13, and the inert gas is filled into the third space C through the second inert gas channel 23 of the lower chamber 2 while the inert gas is filled into the second space B.
After the pressure of the second space B reaches the set pressure, the heating plate 3 provided in the upper concave cavity 11 is moved to press the peripheral portions of the upper and lower films 5 and 6 together to achieve packaging of the article 102 at step S310.
In some embodiments, the modified atmosphere packaging method 300 can further comprise: after the vacuum degree of the second space B reaches the set requirement, the air in the first space a, the second space B and the third space C is continuously extracted for a period of time through the first air channel 12 and the second air channel 22, so that the air in the first space a, the air in the second space B and the air in the third space B, the air in the first air channel B and the air in the pipeline at the rear end of the electromagnetic valve are extracted to be cleaner.
The above description is only exemplary of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the scope of the present application.
Claims (6)
1. A modified atmosphere packaging machine comprises an upper cavity (1) and a lower cavity (2) which are opposite up and down, and an upper film (5) and a lower film (6) which are arranged between the upper cavity and the lower cavity and are used for packaging objects, wherein the lower cavity (2) can move up and down to be combined with or separated from the upper cavity (1), the upper cavity (1) and the lower cavity (2) are respectively provided with an upper concave inner cavity (11) with a downward opening and a lower concave inner cavity (21) with an upward opening and used for accommodating the lower film (6), a heating plate (3) which is movably used for pressing the peripheral parts of the upper film (5) and the lower film (6) together to package the objects is arranged in the upper concave inner cavity (11), and a first space, a first space and a second space are formed between the upper film (5) and the upper concave inner cavity (11) in the modified atmosphere packaging machine when the lower cavity (2) is combined with the upper cavity (1), A second space formed between the upper membrane (5) and the lower membrane (6) and a third space formed between the lower membrane (6) and the recessed cavity (21), characterized in that,
the upper chamber (1) is provided with a first air passage (12) for drawing air in the first space therethrough and through the first membrane hole (51) of the upper membrane (5) therethrough and also drawing air in the second space therethrough, and a first inert gas passage (13) for filling the first space with an inert gas therethrough and also filling the second space with an inert gas therethrough and through the second membrane hole (52) of the first space and the upper membrane (5) therethrough after the degree of vacuum of the second space reaches a set requirement, and,
the lower chamber (2) is provided with a second air passage (22) through which air in the third space is drawn while air in the second space is drawn, and a second inert gas passage (23) through which an inert gas is filled into the third space while the inert gas is filled into the second space.
2. The modified atmosphere packaging machine according to claim 1, wherein,
the opening of the upper concave cavity (11) is larger than the opening of the lower concave cavity (21), and the positions of the first film hole (51) and the second film hole (52) in the upper film (5) are configured to be outside the heating plate (3) and inside the upper concave cavity (11); and when the upper membrane (5) and the lower membrane (6) are placed between the upper cavity (1) and the lower cavity (2), the first membrane hole (51) and the second membrane hole (52) are located within a projection of the opening of the upper concave cavity (11) on a first plane and are located outside a projection of the opening of the lower concave cavity (21) on the first plane, the first plane being a plane located between the upper cavity (1) and the lower cavity (2).
3. The modified atmosphere packaging machine according to claim 1, wherein,
the first air passage (12) and the first inert gas passage (13) are respectively provided on both sides of the upper chamber (1) across a first direction, and the first film hole (51) and the second film hole (52) are respectively provided on both sides of the upper film (5) across the first direction, wherein the first direction is a direction in which the upper film (5) and the lower film (6) enter and exit the modified atmosphere packaging machine, and
the second air channel (22) and the second inert gas channel (23) are arranged at the bottom of the concave inner cavity (21).
4. Modified atmosphere packaging machine according to claim 3, characterized in that one of the openings of each of the first air passage (12) and the first inert gas passage (13) is provided on the lower end face of the upper chamber (1).
5. The modified atmosphere packaging machine of claim 1, further comprising:
a first vacuum device connected to the first air passage (12) to draw air in the first space and the second space,
a second vacuum device connected to the second air passage (22) to draw air in the third space,
a first inert gas filling device connected to the first inert gas passage (13) to fill the first space and the second space with an inert gas, an
A second inert gas filling device connected to the second inert gas passage (23) to fill the third space with an inert gas.
6. The modified atmosphere packaging machine of claim 1, further comprising:
a vacuum detecting element for detecting the degree of vacuum of the first and second spaces, an
And the pressure detection element is used for detecting the pressure in the first space and the second space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021962982.XU CN214084966U (en) | 2020-09-09 | 2020-09-09 | Air-conditioning packaging machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021962982.XU CN214084966U (en) | 2020-09-09 | 2020-09-09 | Air-conditioning packaging machine |
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| CN214084966U true CN214084966U (en) | 2021-08-31 |
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| CN202021962982.XU Active CN214084966U (en) | 2020-09-09 | 2020-09-09 | Air-conditioning packaging machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112093118A (en) * | 2020-09-09 | 2020-12-18 | 北京大森包装机械有限公司 | Air conditioning packaging machine and air conditioning packaging method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112093118A (en) * | 2020-09-09 | 2020-12-18 | 北京大森包装机械有限公司 | Air conditioning packaging machine and air conditioning packaging method |
| CN112093118B (en) * | 2020-09-09 | 2024-08-09 | 北京大森包装机械有限公司 | Modified atmosphere packaging machine and modified atmosphere packaging method |
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