Bulk food heat preservation packaging device

Abstract

The invention discloses a bulk food heat preservation packaging device, and relates to the technical field of food packaging, the bulk food heat preservation packaging device comprises an outer packaging assembly, and the outer packaging assembly comprises a shell; according to the bulk food heat preservation packaging device, the cover disc and the packaging disc are divided into two parts by tearing the sealing strip, the cover disc can serve as a heat preservation protection cover to cover the packaging disc and can be used for containing heated chicken, the cover disc can be prevented from making direct contact with a table top through the heat insulation frame, the table top is protected, and when roast chicken is heated, the heat preservation protection effect is achieved. Each folded plate is pulled outwards, so that the packaging tray is unfolded, the heating area of the unfolded packaging tray is larger during heating, the net rack is placed on charcoal fire or a gas stove, a certain distance is kept between flame and the bottom of the packaging tray, the packaging tray is prevented from being burnt through by inner flame with the too high temperature, and the service life of the packaging tray is prolonged. In the process of heating and containing the roast chicken, a pot and tableware do not need to be additionally used, and higher convenience is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of food packaging, and particularly to a thermal insulation packaging device for bulk food. Background Art

[0002] Bulk food refers to food without pre-packaging in a fixed quantity and needs to be sold by weighing. As a kind of food, if a roasted chicken is not packaged in a fixed quantity but sold by weighing, then it belongs to bulk food. For example, in a traditional deli, the roasted chicken is placed in a display cabinet, and customers choose the size according to their needs, and then the clerk weighs and prices it. This form of roasted chicken is bulk food.

[0003] In the prior art, as in Chinese Patent No.: CN210364766U, there is disclosed a packaging box for transporting bulk baked food, including a base, a partition and a thickening layer. A first cavity is provided at the upper end of the base, the partition is installed at the upper end of the first cavity, the upper surface of the partition is connected with a box body, a second cavity is provided at the upper end of the partition, an upper box body is fixedly connected to the upper end of the box body, a handle is fixedly connected to the upper end of the upper box body, a packaging layer is provided on the outer surface of the box body, the thickening layer is arranged inside the box body, and a heat insulation layer is inlaid on the inner surface of the box body. In the packaging box for transporting bulk baked food, a first cavity and a second cavity are provided, which are respectively used to place a moisture-proof agent and the food itself, effectively separating them and also being able to play a good role in moisture-proofing. A heat insulation layer made of tin foil material is also provided on the box body of the device, which can effectively achieve the purpose of keeping the food fresh and simply and effectively play the role of freshness preservation and moisture-proofing.

[0004] However, in the prior art, when a roasted chicken is purchased in a deli, a hot roasted chicken can be selected according to the customer's needs. After being packaged and sold to the customer, it can be eaten immediately after opening the bag. However, there is a period of time from when the customer buys the roasted chicken to when they eat it. In cold weather, even if the roasted chicken is packaged, it will quickly lose its heat. But the current packaging box cannot be directly heated by an open flame, and in a family without a microwave oven, the roasted chicken cannot be heated. One can only open the packaging of the roasted chicken and then transfer the roasted chicken to a pot to use a gas stove for heating. Such packaging does not provide convenience for subsequent heating.

[0005] Therefore, we propose a thermal insulation packaging device for bulk food to solve the problems raised above. Summary of the Invention

[0006] The purpose of the present invention is to provide a thermal insulation packaging device for bulk food to solve the problem that the current packaging of roasted chicken does not provide convenience for subsequent heating as mentioned in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A thermal insulation packaging device for bulk food, comprising an outer packaging assembly. The outer packaging assembly includes a housing. An inner packaging assembly is arranged inside the housing, and the inner packaging assembly is used for packaging roasted chickens. The inner packaging assembly includes a packaging tray. The packaging tray includes an aluminum foil layer, and the aluminum foil layer is used to withstand high temperatures. A ceramic coating is arranged on the inner wall of the aluminum foil layer, and the ceramic coating is used to enhance the high-temperature resistance. An aluminum foil lining paper layer is arranged on the inner wall of the ceramic coating, and the aluminum foil lining paper layer is used to prevent the roasted chicken from sticking to the packaging when taken out. Folding plates are fixedly connected to the four corners of the packaging tray. Connecting membranes are fixedly connected between the folding surfaces of each folding plate, and the connecting membranes are used to tighten the folding surfaces of the folding plates. A support base is fixedly connected to the bottom of the packaging tray. A plurality of through holes are formed on the outer surface of the support base. A wire rack is fixedly connected between the inner walls of the support base. A sealing strip is fixedly connected to the top of the packaging tray. A tear opening is fixedly connected to one end of the sealing strip, and the tear opening is used to quickly and conveniently tear off the sealing strip. A plurality of auxiliary grooves are formed on the outer surface of the sealing strip near the top edge and the bottom edge. A cover plate is fixedly connected to the top of the sealing strip, and the cover plate is used to hold the roasted chicken. A heat insulation frame is fixedly connected to the top of the cover plate, and the heat insulation frame is used to separate the high-temperature cover plate from the placed tabletop; by tearing open the sealing strip, the cover plate and the packaging tray are divided into two parts. The cover plate can be used as a thermal insulation protection lid to cover the packaging tray and can also be used to hold the heated chicken. The heat insulation frame can prevent the cover plate from directly contacting the tabletop and has a protective effect on the tabletop. When heating the roasted chicken, by pulling each folding plate outwards, the packaging tray is unfolded. The unfolded packaging tray has a larger heat receiving area during heating. Place the wire rack on the charcoal fire or gas stove so that the flame keeps a certain distance from the bottom of the packaging tray to avoid the inner flame with too high temperature from burning through the packaging tray. During the heating and loading process of the roasted chicken, there is no need to use an additional pot and tableware, which has higher convenience. The aluminum foil lining paper layer is located in the innermost part and is directly in contact with the roasted chicken. The aluminum foil lining paper layer provides good support during packaging, can make the whole packaging more upright, and is convenient for operation. When wrapping the roasted chicken, the aluminum foil lining paper layer can prevent the aluminum foil layer from directly contacting the roasted chicken and sticking, so as to keep the complete shape of the roasted chicken. In addition, it is not easy to break during the subsequent heating process. The aluminum foil layer is made of metal material and has excellent thermal conductivity. When heating the roasted chicken, whether in an oven, a microwave oven or on a barbecue grill, it can quickly and evenly conduct heat, so that each part of the roasted chicken is heated evenly. During the packaging process, the aluminum foil layer has good barrier effects on oxygen, water vapor and light, which helps to maintain the freshness and flavor of the bulk roasted chicken. The ceramic coating has a higher melting point and good heat insulation performance. Coating a layer of high-temperature resistant ceramic coating on the surface of the aluminum foil layer can prevent the whole packaging tray from being burned through when using an open fire such as a gas stove for heating to a certain extent.

[0008] Preferably, outer covers are fixedly connected to the tops of both sides of the shell, and extraction grooves are provided on the tops of the two outer covers, and the extraction grooves are used to conveniently take out the packaged roast chicken.

[0009] Preferably, the top of one of the outer covers is fixedly connected to two adhesives, and the top of the other outer cover is fixedly connected to two adhesive surfaces, and each adhesive is respectively adhered to each corresponding adhesive surface.

[0010] Preferably, the shell includes a packaging layer, and the packaging layer is used to keep the packaging device stiff, and a waterproof layer is pasted on the outside of the packaging layer, and the waterproof layer is used to protect the packaging layer.

[0011] Preferably, a foam layer is provided on the inner wall of the packaging layer, and the foam layer is used to cushion the packaged roast chicken, and a heat-insulating layer is provided on the inner wall of the foam layer, and the heat-insulating layer is used to keep the roast chicken warm.

[0012] Preferably, a plurality of connecting mesh belts are fixedly connected to the corners on both sides of the bottom of the shell, and a limiting airbag is fixedly connected to one side of each connecting mesh belt, and the limiting airbag is used to reduce the shaking of the inner packaging component inside the shell.

[0013] Preferably, both inner walls of the shell are fixedly connected with a closing component, the two closing components are symmetrically arranged, and the two closing components are used to strengthen the positioning of the inner packaging component; the material used for the packaging layer is hard cardboard printed with the merchant logo, which can prevent the roast chicken from being squeezed and deformed during transportation; the material used for the waterproof layer is PE film, which is soft and transparent, and can fit tightly on the packaging layer to form a waterproof barrier, which can prevent external moisture from entering the packaging box and avoid the packaging box from being soaked and damaged; the foam layer is PU foam, which has better flexibility and Thermal insulation performance: when the packaging box is hit, the foam layer can cushion the impact force and prevent the roast chicken bones from piercing the packaging or damaging the roast chicken meat. At the same time, it plays a role of heat preservation, thereby achieving the benefit of extending the heat preservation time. The insulation layer is made of aluminum foil composite insulation material, which can delay heat loss and allow customers to enjoy hot roast chicken for a period of time. When the inner packaging component is placed inside the outer shell, the airflow inside the multiple limiting airbags will be transferred to the outer end, automatically forming a wrapping protection structure, thereby limiting the inner packaging component in the middle position, which can prevent the inner packaging component from shaking inside the outer shell.

[0014] Preferably, the closing assembly includes an inner cover, the bottom of the inner cover is fixedly connected to a plurality of positioning airbags, the plurality of positioning airbags are evenly divided into three groups, the outer surfaces of each group of positioning airbags are fixedly connected to a ventilation tube, a connecting tube is fixedly embedded in the top of the inner cover, the three ends of the connecting tube are respectively fixedly connected to the middle tops of the three groups of positioning airbags, and the outer surface of the connecting tube is fixedly connected to an air blowing tube.

[0015] Preferably, a positioning frame is fixedly connected to the top of the inner cover. A clamping groove is fixedly connected between the opposite inner walls of the positioning frame. A fixed frame is rotatably connected to one side of the positioning frame. A clamping strip is fixedly connected between the opposite inner walls of the fixed frame. The outer surface of the clamping strip is engaged with the inner wall of the clamping groove.

[0016] Preferably, a magic tape is fixedly connected to one side of the inner cover, and an opening strip is fixedly connected to one side of the fixed frame; by pasting the magic tapes on the tops of the two inner covers together, inflating the inside of the blowing tube, the air flow enters the three groups of positioning air bags after passing through the connecting tube. Under the connection of the ventilation tube, the air flow can reach each positioning air bag. The positioning air bags filled with gas squeeze the top of the cover plate, so as to further prevent the roasted chicken wrapped inside from shaking inside the outer shell. After the positioning air bags are inflated, the fixed frame is stuck outside the positioning frame by means of the opening strip. At this time, the clamping strip will press the blowing tube while being inserted into the inside of the clamping groove, avoiding air leakage at the blowing tube.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In the present invention, when in use, by tearing the sealing strip, the cover plate and the packaging tray are divided into two parts. The cover plate can be used as a heat preservation and protection cover to cover the packaging tray and can also be used to hold the heated chicken. The heat insulation frame can prevent the cover plate from directly contacting the tabletop, playing a protective role for the tabletop. When heating the roasted chicken, by pulling each folding plate outwards, the packaging tray is unfolded. The unfolded packaging tray has a larger heat receiving area during heating. Place the wire rack on the charcoal fire or gas stove so that the flame keeps a certain distance from the bottom of the packaging tray, avoiding the inner flame with too high temperature from burning through the packaging tray. During the heating and loading process of the roasted chicken, there is no need to use a pot and tableware additionally, which has higher convenience. The aluminum foil lining layer is located in the innermost part and is in direct contact with the roasted chicken. The aluminum foil lining layer provides good support force during packaging, enabling the overall packaging to be more upright and facilitating operation. When wrapping the roasted chicken, the aluminum foil lining layer can prevent the aluminum foil layer from directly contacting the roasted chicken and sticking, so as to keep the complete shape of the roasted chicken. In addition, it is not easy to break during subsequent heating. The aluminum foil layer is made of metal material and has excellent heat conduction performance. When heating the roasted chicken, whether in the oven, microwave oven or on the barbecue grill, it can quickly and evenly conduct heat, making each part of the roasted chicken evenly heated. During the packaging process, the aluminum foil layer has good barrier effects on oxygen, water vapor and light, which helps to maintain the freshness and flavor of the bulk roasted chicken. The ceramic coating has a higher melting point and good heat insulation performance. Coating a layer of high-temperature resistant ceramic coating on the surface of the aluminum foil layer can prevent the entire packaging tray from being burned through when heated by an open flame such as a gas stove to a certain extent.

[0019] 2. When in use, the material used for the packaging layer is hard cardboard printed with the merchant logo, which can prevent the roasted chicken from being squeezed and deformed during transportation. The material used for the waterproof layer is PE film. The PE film is soft and transparent, and it can closely adhere to the packaging layer to form a waterproof barrier, which can prevent external moisture from entering the packaging box and avoid damage to the packaging box due to being soaked. The foam layer is made of PU foam, which has better flexibility and heat insulation performance. When the packaging box is impacted, the foam layer can buffer the impact force, prevent the bones of the roasted chicken from piercing the packaging or damaging the meat of the roasted chicken, and at the same time play a heat preservation role, so as to achieve the benefit of extending the heat preservation time. The heat preservation layer is made of aluminum foil composite heat preservation material, which can delay the heat dissipation, so that customers can enjoy the hot roasted chicken for a period of time. When the inner packaging component is placed inside the outer shell, the air flow inside the multiple limiting air bags will transfer to the outer end, automatically forming a wrapped protection structure, thereby limiting the inner packaging component in the middle position and preventing the inner packaging component from shaking inside the outer shell.

[0020] 3. When in use, the present invention pastes the tops of the two inner covers together with magic stickers, inflates the inside of the blow tube, and the air flow enters the three groups of positioning air bags after passing through the connecting tube. Under the connection of the ventilation tube, the air flow can reach each positioning air bag, and the positioning air bag filled with gas squeezes the top of the cover plate, so as to further prevent the roasted chicken wrapped in the packaging from shaking inside the outer shell. After inflating the positioning air bags, the fixed frame is stuck outside the positioning frame with the help of the opening strip. At this time, the clamping strip will be stuck inside the clamping groove while pressing the blow tube, avoiding air leakage at the blow tube. Description of the Drawings

[0021] Figure 1 is the front perspective view of a bulk food heat preservation packaging device of the present invention;

[0022] Figure 2 is the structural unfolded perspective view of a bulk food heat preservation packaging device of the present invention;

[0023] Figure 3 is the partial bottom perspective view of the closing component of a bulk food heat preservation packaging device of the present invention;

[0024] Figure 4 is the partial top perspective view of the closing component of a bulk food heat preservation packaging device of the present invention;

[0025] Figure 5 is the partial sectional perspective view of the outer shell of a bulk food heat preservation packaging device of the present invention;

[0026] Figure 6 is the partial bottom perspective view of the inner packaging component of a bulk food heat preservation packaging device of the present invention;

[0027] Figure 7 This is a three-dimensional unfolded view of the partial structure of the inner packaging component of a heat-insulating packaging device for bulk food according to the present invention;

[0028] Figure 8 According to the present invention Figure 7 The enlarged view at position A in;

[0029] Figure 9 This is a schematic diagram of the partial structure of the packaging tray of a heat-insulating packaging device for bulk food according to the present invention;

[0030] Figure 10 This is a schematic diagram of the partial structure of the outer shell of a heat-insulating packaging device for bulk food according to the present invention.

[0031] In the figure:

[0032] 1. Outer packaging component; 101. Outer shell; 1011. Packaging layer; 1012. Waterproof layer; 1013. Foam layer; 1014. Heat-insulating layer; 102. Outer cover; 103. Extraction groove; 104. Adhesive; 105. Adhesive surface; 2. Sealing component; 201. Inner cover; 202. Positioning airbag; 203. Magic tape; 204. Positioning frame; 205. Clamping groove; 206. Fixed frame; 207. Card strip; 208. Opening strip; 209. Connecting pipe; 210. Blowing pipe; 211. Vent pipe; 3. Inner packaging component; 301. Packaging tray; 3011. Aluminum foil layer; 3012. Ceramic coating; 3013. Aluminum foil liner layer; 302. Sealing strip; 303. Cover plate; 304. Support base; 305. Penetrating hole; 306. Grid; 307. Folding plate; 308. Heat-insulating frame; 309. Auxiliary groove; 310. Connecting film; 311. Tear opening; 4. Limiting airbag; 5. Connecting mesh belt. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1: Refer to Figure 1 - Figure 10As shown in the figure, the present invention provides a technical solution: a heat preservation packaging device for bulk food, including an outer packaging component 1. The outer packaging component 1 includes a housing 101. An inner packaging component 3 is arranged inside the housing 101, and the inner packaging component 3 is used for packaging roasted chickens. The inner packaging component 3 includes a packaging tray 301. The packaging tray 301 includes an aluminum foil layer 3011, and the aluminum foil layer 3011 is used to withstand high temperatures. A ceramic coating 3012 is arranged on the inner wall of the aluminum foil layer 3011, and the ceramic coating 3012 is used to enhance the high-temperature resistance. An aluminum foil lining paper layer 3013 is arranged on the inner wall of the ceramic coating 3012, and the aluminum foil lining paper layer 3013 is used to prevent the roasted chicken from sticking to the packaging when taken out. Folding plates 307 are fixedly connected to the four corners of the packaging tray 301. A connecting film 310 is fixedly connected between the folding surfaces of each folding plate 307, and the connecting film 310 is used to tighten the folding surfaces of the folding plates 307. A support base 304 is fixedly connected to the bottom of the packaging tray 301. A plurality of through holes 305 are formed on the outer surface of the support base 304. A wire mesh 306 is fixedly connected between the inner walls of the support base 304. A sealing strip 302 is fixedly connected to the top of the packaging tray 301. A tear opening 311 is fixedly connected to one end of the sealing strip 302, and the tear opening 311 is used to quickly and conveniently tear off the sealing strip 302. A plurality of auxiliary grooves 309 are formed on the outer surface of the sealing strip 302 near the top edge and the bottom edge. A cover plate 303 is fixedly connected to the top of the sealing strip 302, and the cover plate 303 is used to hold the roasted chicken. A heat insulation frame 308 is fixedly connected to the top of the cover plate 303, and the heat insulation frame 308 is used to separate the high-temperature cover plate 303 from the placed tabletop.

[0035] In this embodiment, during use, first, place the bulk roasted chickens to be packaged inside the packaging tray 301. At this time, the folding plates 307 at the four corners of the packaging tray 301 are all in a folded state. When folding, a connecting film 310 is fixed between every two adjacent folding surfaces of the folding plate 307. The connecting film 310 can pull the folding plate 307, so the folding plate 307 will not automatically unfold. Only when a force is applied can the connecting film 310 be torn. Then, sequentially paste the sealing strip 302 and the cover plate 303 above the packaging tray 301 to complete the packaging of the roasted chicken. Among them, the aluminum foil lining layer 3013 is located in the innermost part and directly contacts the roasted chicken. The aluminum foil lining layer 3013 provides good support during packaging, enabling the overall packaging to be more upright and facilitating operation. When wrapping the roasted chicken, the aluminum foil lining layer 3013 can prevent the aluminum foil layer 3011 from directly contacting the roasted chicken and causing adhesion, thus being able to maintain the complete shape of the roasted chicken. Additionally, it is not easily broken during subsequent heating. The aluminum foil layer 3011 is made of a metal material and has excellent heat conduction performance. When heating the roasted chicken, whether in an oven, a microwave oven, or on a barbecue grill, it can quickly and evenly conduct heat, making each part of the roasted chicken receive uniform heat. During the packaging process, the aluminum foil layer 3011 has good barrier effects against oxygen, water vapor, and light, which helps to maintain the freshness and flavor of the bulk roasted chicken. The ceramic coating 3012 has a higher melting point and good heat insulation performance. Coating a layer of high-temperature-resistant ceramic coating 3012 on the surface of the aluminum foil layer 3011 can, to a certain extent, prevent the entire packaging tray 301 from being burned through when using an open flame such as a gas stove for heating. When heating this packaging, first tear the sealing strip 302 from the tear opening 311. The opening of multiple auxiliary grooves 309 can make the tearing of the sealing strip 302 more convenient. At this time, the cover plate 303 and the packaging tray 301 are divided into two parts. The cover plate 303 can be used as a heat-insulating protective lid to cover the packaging tray 301 and can also be used to hold the heated chicken. The heat-insulating frame 308 can prevent the cover plate 303 from directly contacting the tabletop, protecting the tabletop. When heating the roasted chicken, by pulling each folding plate 307 outwards, the packaging tray 301 is unfolded. The unfolded packaging tray 301 has a larger heat-receiving area during heating. Place the wire rack 306 on the charcoal fire or gas stove, keeping a certain distance between the flame and the bottom of the packaging tray 301 to prevent the inner flame with too high a temperature from burning through the packaging tray 301. During the heating and serving process of the roasted chicken, there is no need to use additional pots and tableware, which has higher convenience.

[0036] Embodiment Two: Figure 1 - Figure 10As shown in the figure, outer covers 102 are fixedly connected to the top of both sides of the outer shell 101. Extraction slots 103 are provided at the top of the two outer covers 102, and the extraction slots 103 are used for conveniently taking the roasted chicken after packaging. Two adhesives 104 are fixedly connected to the top of one of the outer covers 102, and two adhesive surfaces 105 are fixedly connected to the top of the other outer cover 102. Each adhesive 104 is respectively pasted on each corresponding adhesive surface 105. The outer shell 101 includes a packaging layer 1011, and the packaging layer 1011 is used to keep the packaging device upright. A waterproof layer 1012 is pasted on the outside of the packaging layer 1011, and the waterproof layer 1012 is used to protect the packaging layer 1011. A foam layer 1013 is provided on the inner wall of the packaging layer 1011, and the foam layer 1013 is used to buffer the roasted chicken during packaging. A heat preservation layer 1014 is provided on the inner wall of the foam layer 1013, and the heat preservation layer 1014 is used to keep the roasted chicken warm. A plurality of connecting mesh belts 5 are fixedly connected to the bottom corners on both sides of the outer shell 101. A limiting airbag 4 is fixedly connected to one side of each connecting mesh belt 5, and the limiting airbag 4 is used to reduce the shaking of the inner packaging component 3 inside the outer shell 101.

[0037] In this embodiment, during use, the tops of the two outer covers 102 are combined together, and the adhesives 104 are pasted on the adhesive surfaces 105 at the corresponding positions. It is more convenient to extract by means of the extraction slots 103. The materials used for the outer covers 102 and the outer shell 101 are the same. Among them, the material used for the packaging layer 1011 is hard cardboard printed with the merchant logo, which can prevent the roasted chicken from being squeezed and deformed during transportation. The material used for the waterproof layer 1012 is PE film. The PE film is soft and transparent, and it can be closely attached to the packaging layer 1011, thereby forming a waterproof barrier, which can prevent external moisture from entering the packaging box and avoid damage to the packaging box due to being soaked. The foam layer 1013 is PU foam, which has better flexibility and heat insulation performance. When the packaging box is impacted, the foam layer 1013 can buffer the impact force, prevent the bones of the roasted chicken from piercing the packaging or damaging the meat of the roasted chicken, and at the same time play a heat preservation role, so as to achieve the benefit of extending the heat preservation time. The heat preservation layer 1014 is made of aluminum foil composite heat preservation material, which can delay the heat dissipation, so that customers can enjoy the hot roasted chicken for a period of time. When the inner packaging component 3 is placed inside the outer shell 101, its bottom will simultaneously press down on a plurality of limiting airbags 4. Under the action of the pressure, the air flow inside the plurality of limiting airbags 4 will transfer to the outer end, automatically forming a wrapped protection structure, thereby limiting the inner packaging component 3 in the middle position and preventing the inner packaging component 3 from shaking inside the outer shell 101.

[0038] Embodiment Three: Figure 1 - Figure 10As shown in the figure, both inner walls on both sides of the outer shell 101 are fixedly connected with a closing assembly 2. The two closing assemblies 2 are symmetrically arranged, and the two closing assemblies 2 are used to strengthen the positioning of the inner packaging assembly 3. The closing assembly 2 includes an inner cover 201. A plurality of positioning airbags 202 are fixedly connected to the bottom of the inner cover 201. The plurality of positioning airbags 202 are evenly divided into three groups. A ventilation pipe 211 is fixedly communicated between the outer surfaces of each group of positioning airbags 202. A connecting pipe 209 is fixedly embedded in the top of the inner cover 201. The three ends of the connecting pipe 209 are fixedly communicated with the middle tops of the three groups of positioning airbags 202 respectively. A blowing pipe 210 is fixedly communicated with the outer surface of the connecting pipe 209. A positioning frame 204 is fixedly connected to the top of the inner cover 201. A clamping groove 205 is fixedly connected between the opposite inner walls of the positioning frame 204. One side of the positioning frame 204 is rotatably connected with a fixing frame 206. A clamping strip 207 is fixedly connected between the opposite inner walls of the fixing frame 206. The outer surface of the clamping strip 207 is engaged with the inner wall of the clamping groove 205. A magic tape 203 is fixedly connected to one side of the inner cover 201. An opening strip 208 is fixedly connected to one side of the fixing frame 206.

[0039] In this embodiment, when in use, after the inner packaging assembly 3 is placed, the tops of the two inner covers 201 are pasted together. The pasting method is to use the connection between the magic tapes 203 for pasting. By inflating the inside of the blowing pipe 210, the air flow enters the three groups of positioning airbags 202 after passing through the connecting pipe 209. Under the connection of the ventilation pipe 211, the air flow can reach each positioning airbag 202. The positioning airbags 202 filled with gas squeeze the top of the cover plate 303, so as to further prevent the roasted chicken packed from shaking inside the outer shell 101. After the positioning airbags 202 are inflated, the fixing frame 206 is clamped outside the positioning frame 204 by means of the opening strip 208. At this time, the clamping strip 207 will be pressed against the blowing pipe 210 and at the same time be inserted into the inside of the clamping groove 205 to avoid air leakage at the blowing pipe 210.

[0040] Usage method and working principle of this device: First, place the bulk roasted chickens to be packaged inside the packaging tray 301. At this time, the folding plates 307 at the four corners of the packaging tray 301 are all in a folded state. When folding, the connecting film 310 is fixed between every two adjacent folding surfaces of the folding plate 307. The connecting film 310 can pull the folding plate 307, so the folding plate 307 will not automatically unfold. Only when force is applied can the connecting film 310 be torn. Then, paste the sealing strip 302 and the cover plate 303 on the top of the packaging tray 301 in sequence to complete the packaging of the roasted chicken. Among them, the aluminum foil lining layer 3013 is located in the innermost part and is in direct contact with the roasted chicken. The aluminum foil lining layer 3013 provides good support during packaging. When wrapping the roasted chicken, the aluminum foil lining layer 3013 can prevent the aluminum foil layer 3011 from directly contacting the roasted chicken and causing adhesion, so as to keep the complete shape of the roasted chicken. In addition, it is not easy to break during subsequent heating. The aluminum foil layer 3011 is made of metal material and has excellent heat conduction performance. When heating the roasted chicken, whether in an oven, a microwave oven or on a barbecue grill, it can quickly and evenly conduct heat, making each part of the roasted chicken evenly heated. During the packaging process, the aluminum foil layer 3011 has good barrier effects on oxygen, water vapor and light. The ceramic coating 3012 has a higher melting point and good heat insulation performance. Coating a layer of high-temperature resistant ceramic coating 3012 on the surface of the aluminum foil layer 3011 can prevent the entire packaging tray 301 from being burned through when heating with an open flame such as a gas stove to a certain extent. When this packaging is heated subsequently, first tear the sealing strip 302 from the tear opening 311. The opening of multiple auxiliary grooves 309 can make the tearing of the sealing strip 302 more convenient. At this time, the cover plate 303 and the packaging tray 301 are separated into two parts. The cover plate 303 can be used as a heat preservation and protection lid to cover the packaging tray 301 and can be used to hold the heated chicken. The heat insulation frame 308 can prevent the cover plate 303 from directly contacting the tabletop. When heating the roasted chicken, by pulling each folding plate 307 outwards, the packaging tray 301 is unfolded. The unfolded packaging tray 301 has a larger heat receiving area when heated. Place the wire rack 306 on the charcoal fire or gas stove, so that the flame keeps a certain distance from the bottom of the packaging tray 301 to avoid the inner flame with too high temperature burning through the packaging tray 301. When in use, merge the tops of the two outer covers 102 together and paste the adhesive 104 on the corresponding paste surface 105. It can be more convenient to extract by means of the extraction groove 103. The materials used for the outer cover 102 and the outer shell 101 are the same. Among them, the material used for the packaging layer 1011 is hard cardboard printed with the merchant logo. It can prevent the roasted chicken from being squeezed and deformed during transportation. The material used for the waterproof layer 1012 is PE film. The PE film is soft and transparent. It can closely adhere to the packaging layer 1011 to form a waterproof barrier, which can prevent external moisture from entering the packaging box and avoid the packaging box being damaged due to being soaked.The foam layer 1013 is a PU foam, which has better flexibility and heat insulation performance. When the packaging box is impacted, the foam layer 1013 can buffer the impact force and play a heat preservation role at the same time, so as to achieve the benefit of extending the heat preservation time. The heat preservation layer 1014 is made of aluminum foil composite heat preservation material, which can delay the heat dissipation, so that customers can enjoy the hot roasted chicken for a period of time. When the inner packaging component 3 is placed into the outer shell 101, its bottom will simultaneously press down multiple limit air bags 4. Under the action of the pressure, the air flow inside the multiple limit air bags 4 will transfer to the outer end, automatically forming a wrapping protection structure, thereby limiting the inner packaging component 3 in the middle position and preventing the inner packaging component 3 from shaking inside the outer shell 101. When in use, after the inner packaging component 3 is placed, the tops of the two inner covers 201 are pasted together. The pasting method is to use the connection between the magic tapes 203 for pasting. By inflating the inside of the air blowing pipe 210, the air flow enters the three groups of positioning air bags 202 after passing through the connecting pipe 209. Under the connection of the ventilation pipe 211, the air flow can reach each positioning air bag 202. The positioning air bag 202 filled with gas squeezes the top of the cover plate 303, so as to further prevent the roasted chicken packaged from shaking inside the outer shell 101. After the positioning air bag 202 is inflated, the fixing frame 206 is stuck outside the positioning frame 204 by means of the opening strip 208. At this time, the clamping strip 207 will be stuck into the inside of the clamping groove 205 while pressing the air blowing pipe 210, avoiding air leakage at the air blowing pipe 210.,

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat preservation packaging device for bulk food, comprising an outer packaging component (1), the outer packaging component (1) includes a housing (101), an inner packaging component (3) is arranged inside the housing (101), and the inner packaging component (3) is used for packaging roasted chickens, and is characterized in that: The inner packaging component (3) includes a packaging tray (301). The packaging tray (301) includes an aluminum foil layer (3011), and the aluminum foil layer (3011) is used to withstand high temperatures. A ceramic coating (3012) is provided on the inner wall of the aluminum foil layer (3011), and the ceramic coating (3012) is used to enhance the high-temperature resistance. An aluminum foil backing paper layer (3013) is provided on the inner wall of the ceramic coating (3012), and the aluminum foil backing paper layer (3013) is used to prevent the roasted chicken from sticking to the packaging when taken out. Folding plates (307) are fixedly connected to the four corners of the packaging tray (301). A connecting film (310) is fixedly connected between the folding surfaces of each folding plate (307), and the connecting film (310) is used to tighten the folding surfaces of the folding plate (307). A support base (304) is fixedly connected to the bottom of the packaging tray (301). A plurality of through holes (305) are provided on the outer surface of the support base (304). A wire rack (306) is fixedly connected between the inner walls of the support base (304). A sealing strip (302) is fixedly connected to the top of the packaging tray (301). One end of the sealing strip (302) is fixedly connected with a tear opening (311), and the tear opening (311) is used to quickly and conveniently tear off the sealing strip (302). A plurality of auxiliary grooves (309) are provided on the outer surface of the sealing strip (302) near the top edge and the bottom edge. A cover plate (303) is fixedly connected to the top of the sealing strip (302), and the cover plate (303) is used to hold the roasted chicken. A heat insulation frame (308) is fixedly connected to the top of the cover plate (303), and the heat insulation frame (308) is used to separate the high-temperature cover plate (303) from the placed tabletop.

2. The bulk food thermal insulation packaging device according to claim 1, characterized in that: Outer covers (102) are fixedly connected to the tops of both sides of the outer shell (101). Extraction grooves (103) are provided on the tops of the two outer covers (102), and the extraction grooves (103) are used for conveniently taking the roasted chicken after packaging.

3. The bulk food thermal insulation packaging device according to claim 2, wherein: Two adhesives (104) are fixedly connected to the top of one of the outer covers (102), and two adhesive surfaces (105) are fixedly connected to the top of the other outer cover (102). Each adhesive (104) is respectively pasted on each corresponding adhesive surface (105).

4. The bulk food thermal insulation packaging device according to claim 3, characterized in that: The outer shell (101) includes a packaging layer (1011), and the packaging layer (1011) is used to keep the packaging device upright. A waterproof layer (1012) is pasted on the outside of the packaging layer (1011), and the waterproof layer (1012) is used to protect the packaging layer (1011).

5. The bulk food thermal insulation packaging device according to claim 4, wherein: A foam layer (1013) is provided on the inner wall of the packaging layer (1011), and the foam layer (1013) is used to buffer the roasted chicken during packaging. A heat preservation layer (1014) is provided on the inner wall of the foam layer (1013), and the heat preservation layer (1014) is used to keep the roasted chicken warm.

6. The bulk food thermal insulation packaging device according to claim 5, wherein: At both corners of the bottom of the outer shell (101), a plurality of connecting mesh belts (5) are fixedly connected. On one side of each connecting mesh belt (5), a limiting airbag (4) is fixedly connected, and the limiting airbag (4) is used to reduce the shaking of the inner packaging component (3) inside the outer shell (101).

7. The bulk food heat preservation packaging device according to claim 6, wherein: On both inner walls of the outer shell (101), a closing component (2) is fixedly connected. The two closing components (2) are symmetrically arranged, and the two closing components (2) are used to strengthen the positioning of the inner packaging component (3).

8. The bulk food thermal insulation packaging device according to claim 7, wherein: The closing component (2) includes an inner cover (201). At the bottom of the inner cover (201), a plurality of positioning airbags (202) are fixedly connected. The plurality of positioning airbags (202) are evenly divided into three groups. Between the outer surfaces of each group of positioning airbags (202), an air pipe (211) is fixedly communicated. At the top of the inner cover (201), a connecting pipe (209) is fixedly embedded. The three ends of the connecting pipe (209) are respectively fixedly communicated with the middle tops of the three groups of positioning airbags (202). On the outer surface of the connecting pipe (209), a blowing pipe (210) is fixedly communicated.

9. The bulk food heat preservation packaging device according to claim 8, wherein: At the top of the inner cover (201), a positioning frame (204) is fixedly connected. Between the opposite inner walls of the positioning frame (204), a clamping groove (205) is fixedly connected. On one side of the positioning frame (204), a fixed frame (206) is rotatably connected. Between the opposite inner walls of the fixed frame (206), a clamping strip (207) is fixedly connected. The outer surface of the clamping strip (207) is engaged with the inner wall of the clamping groove (205).

10. The bulk food thermal insulation packaging device according to claim 9, wherein: On one side of the inner cover (201), a magic tape (203) is fixedly connected. On one side of the fixed frame (206), an opening strip (208) is fixedly connected.

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