Heat preservation lunch box for nutrition catering processing
By using heating packs, rubber air bladders, and aluminum foil film structures in the nutritional meal preparation and insulated lunch boxes, the problem of poor food insulation during food delivery has been solved, and the food temperature has been effectively maintained.
Patent Information
- Application Number
- CN202520023850.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-06
AI Technical Summary
Existing disposable food containers do not keep food warm during delivery, and the taste changes when food is reheated after it has cooled down.
A nutritious meal preparation and insulated lunch box was designed, which includes a heating pack, a rubber air bladder, an aluminum foil film, and vents. Cold water is poured into the heating pack through the rubber air bladder to generate hot steam, and the hot steam heats the aluminum foil film through the vents to maintain the temperature of the food in the plate.
It effectively maintains the heat of food on the plate, prevents the food temperature from dropping, and ensures that the taste of the food remains unchanged during the delivery process.
Smart Images

Figure CN223799418U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a heat preservation lunch box, in particular to a nutrition meal processing heat preservation lunch box. BACKGROUND
[0002] The disposable lunch box structure is relatively simple, and is mainly responsible for storing food. When delivering, the food in the disposable lunch box needs to be kept warm by a heat preservation box, but the heat preservation effect is general, and the taste of the meal will also change after the food is heated again after cooling. Therefore, how to ensure that the food maintains an appropriate temperature during meal delivery is a problem to be solved. UTILITY MODEL CONTENTS
[0003] The utility model aims at providing a nutrition meal processing heat preservation lunch box to solve the above problems.
[0004] In order to achieve the above purpose, the utility model provides the following technical scheme:
[0005] A nutrition meal processing heat preservation lunch box, comprising a lunch plate fixedly arranged on the cross section of the port of the base, wherein a inner ring barrier is fixedly arranged in the center of the base, and an annular cavity is formed between the inner ring barrier and the base;
[0006] A heating bag and a rubber air bag for storing a predetermined volume of cold water are sequentially arranged in the inner ring barrier;
[0007] An aluminum foil film is fixedly arranged on the cross section of the top port of the inner ring barrier, and air holes are arranged on the side wall of the inner ring barrier and distributed along the adjacent four sides and close to the aluminum foil film.
[0008] Preferably, the aluminum foil film is in contact with the bottom of the lunch plate.
[0009] Preferably, the side wall of the base is divided into a connecting edge and a corrugated edge according to the structure, and the corrugated edge is arranged at one end of the connecting edge and connected with the lunch plate.
[0010] Preferably, a high-temperature-resistant film bag is fixedly arranged in the annular cavity between the connecting portion of the inner ring barrier and the base and the edge of the lunch plate, and the high-temperature-resistant film bag wraps the bottom of the lunch plate and the inner ring barrier.
[0011] Preferably, the width of the high-temperature-resistant film bag is equal to the height of the corrugated edge after being stretched.
[0012] Preferably, a plastic stamping sheet is further arranged, a plastic bag tube with a predetermined length is fixedly arranged on the high-temperature-resistant film bag, and one end of the plastic stamping sheet penetrates through the perforation in the side wall of the inner ring barrier.
[0013] The plastic stamp sheet is fixed on the plastic bag cylinder, and the plastic bag cylinder is stretched along with the plastic stamp sheet.
[0014] The other end of the plastic stamp sheet extends into the hole on the side surface of the base.
[0015] As preferred, a push handle arranged in the hole and connected with the hole through a connecting point is further included, and the push handle is fixedly connected with the plastic stamp sheet.
[0016] As preferred, the base and the tray are made of degradable plastic.
[0017] As preferred, the end surface of the tray is provided with a thermoplastic easy-to-tear plastic cover.
[0018] In the above technical solution, the nutritional meal processing and heat preservation lunch box has the following beneficial effects: after the rubber air bag is pierced, the cold water in the rubber air bag is immersed into the heating bag, then the heating bag generates hot steam after reacting with water, the hot steam enters the annular cavity through the air hole, and in the reaction process, the aluminum foil film absorbs heat to heat the tray, thereby protecting the heat of the food in the tray. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments or prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.
[0020] Figure 1 The overall structure schematic view provided by the embodiments of the present application is shown in the figure.
[0021] Figure 2 The schematic view of the explosion structure provided by the embodiments of the present application is shown in the figure.
[0022] Figure 3 The schematic view of the explosion structure provided by the embodiments of the present application is shown in the figure. Figure 1 The schematic view of the structure after the thermoplastic easy-to-tear plastic cover is torn off is shown in the figure.
[0023] Figure 4 The schematic view of the cross-sectional structure provided by the embodiments of the present application is shown in the figure.
[0024] Explanation of reference signs:
[0025] 1, base; 11, connecting edge; 12, corrugated edge; 2, tray; 3, inner ring; 4, annular cavity; 5, heating bag; 6, rubber air bag; 7, aluminum foil film; 8, high-temperature-resistant film bag; 81, plastic bag cylinder; 9, plastic stamp sheet; 91, push handle. DETAILED DESCRIPTION
[0026] In order to make the technical personnel in the art better understand the technical scheme of the utility model, the utility model will be described in further detail below with reference to the drawings.
[0027] As shown in Figures 1-4 A nutrition matching processing heat preservation lunch box, including fixedly arranged on the bottom 1 port section of the lunch plate 2, the bottom 1 is fixedly arranged with the inner ring fence 3 in the middle, and the annular cavity 4 is formed between the inner ring fence 3 and the bottom 1;
[0028] The inner ring fence 3 is sequentially placed with a heating bag 5 and a rubber air bag 6 for storing a predetermined volume of cold water;
[0029] The top of the inner ring fence 3 is fixedly provided with an aluminum foil film 7, and the sidewall of the inner ring fence 3 is provided with a plurality of air holes 71 distributed along the adjacent four sides and close to the aluminum foil film 7.
[0030] Specifically, the heating bag 5 is fixed on the bottom 1 by bonding and is not located in the inner ring fence 3. The rubber air bag 6 is arranged on the heating bag 5.
[0031] Further, the inner ring fence 3 and the bottom 1 in the above embodiment are integrally injection molded. Then the lunch plate 2 is thermoplasticly integrated. The aluminum foil film 7 is fixed on the top of the inner ring fence 3 by glue.
[0032] Secondly, the aluminum foil film 7 is in contact with the bottom of the lunch plate 2.
[0033] Furthermore, the end face of the lunch plate 2 is provided with a thermoplastic easy-to-tear plastic cover.
[0034] The above-mentioned, the bottom 1 and the lunch plate 2 are made of degradable plastic.
[0035] In the above technology, when the rubber air bag 6 is pierced, the cold water in the rubber air bag 6 will be immersed in the heating bag 5, then the heating bag 5 will produce hot steam after reacting with water, and the hot steam will enter the annular cavity 4 through the air holes 71. In the reaction process, the aluminum foil film 7 absorbs heat to heat the lunch plate 2, thereby protecting the heat of the food in the lunch plate 2.
[0036] As a further embodiment of the utility model, in combination with Figure 1 It can be seen that the sidewall of the bottom 1 is divided into a connecting edge 11 and a corrugated edge 12 arranged at one end of the connecting edge 11 and connected with the lunch plate 2. When the heating bag 5 reacts with water to produce hot steam, the hot steam accumulates in the annular cavity 4, and the corrugated edge 12 expands, thereby increasing the height.
[0037] It should be noted that the maximum limit of the expansion of the corrugated edge 12 in the embodiment can accommodate the maximum amount of hot steam produced after the heating bag 5 reacts with water.
[0038] As another embodiment of this utility model, combined with Figure 2 and Figure 4 It can be seen that a high-temperature resistant film bag 8 is fixedly installed between the connection between the inner ring retainer 3 and the base 1 and the edge of the plate 2, which is located inside the annular cavity 4. The high-temperature resistant film bag 8 makes the bottom of the plate 2 and the inner ring retainer 3 covered inside.
[0039] Furthermore, the width of the high-temperature resistant film bag 8 is equal to the height of the extended corrugated edge 12.
[0040] Specifically, in this embodiment, a high-temperature resistant film bag 8 is used to store the hot steam generated by the reaction of the heating pack 5 with water. The hot steam accumulates in the high-temperature resistant film bag 8, and the high-temperature resistant film bag 8 maintains a predetermined distance from the inner wall of the base 1, thereby dividing the annular cavity 4 into two parts. Figure 4 As shown, this creates a thermal insulation space near the base 1 in the annular cavity 4, thereby reducing the rate of heat dissipation.
[0041] Furthermore, after the heat pack 5 reacts with water and generates the maximum amount of hot steam, the width of the entire high-temperature resistant film bag 8 reaches its maximum, which is the maximum extension limit of the corrugated edge 12.
[0042] As another embodiment of this utility model, combined with Figure 2 and Figure 4 It is known that it also includes a plastic stamp 9, and a plastic bag tube 81 of a predetermined length is fixedly set on the high-temperature resistant film bag 8. One end of the plastic stamp 9 passes through the perforation opened in the side wall of the inner ring barrier 3.
[0043] The plastic stamp 9 is fixed to the plastic bag tube 81, and the plastic bag tube 81 extends as the plastic stamp 9 moves;
[0044] The other end of the plastic stamp 9 extends into the hole on the side of the base 1.
[0045] Secondly, it also includes a push handle 91 arranged inside the hole, whose sidewall is connected to the hole through a connection point, and the push handle 91 is fixedly connected to the plastic stamp 9.
[0046] Specifically, in the embodiments, Figure 3 As shown, pressing the push handle 91 towards the inside of the base 1 disconnects the connection point. The plastic puncture piece 9 moves along with the push handle 91, and the plastic bag tube 81 extends towards the inner ring 3. The plastic puncture piece 9 then punctures the rubber airbag 6, causing the rubber airbag 6 to rupture instantly. At this time, cold water inside the rubber airbag 6 will seep into the heating pack 5. The heating pack 5 then reacts with the water to generate hot steam, which enters the annular cavity 4 through the vent 71. During the reaction, the aluminum foil film 7 absorbs heat and heats the plate 2, thus protecting the heat of the food inside the plate 2.
[0047] The above has described certain exemplary embodiments of the present application by way of illustration only, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and description are illustrative in nature, and should not be construed as limiting the scope of protection of the present application.
Claims
1. A nutritionally balanced meal processing thermal container characterized by, Including the fixed setting in the base (1) port section on the dinner plate (2), the inner ring of the base (1) is fixed in the middle and is provided with the ring (3), the ring (3) and the base (1) form annular cavity (4) between them; The inner ring (3) is sequentially placed with a heating bag (5) and a rubber airbag (6) for storing a predetermined volume of cold water; The top of the inner ring (3) is fixedly provided with an aluminum foil film (7) on the section of the port, and the side wall of the inner ring (3) is provided with a plurality of air holes (71) distributed along the adjacent four sides and close to the aluminum foil film (7).
2. The nutritional meal processing and warming lunch box according to claim 1, characterized in that, The aluminum foil film (7) is in contact with the bottom of the dinner plate (2).
3. The nutritional meal processing and warming lunch box according to claim 1, characterized in that, The side wall of the base (1) is divided into a connecting edge (11) and a corrugated edge (12) arranged at one end of the connecting edge (11) and connected with the dinner plate (2) according to the structure.
4. The nutritional meal processing and warming container of claim 1, wherein, The inner ring (3) and the base (1) are fixedly provided with a high-temperature-resistant film bag (8) arranged in the annular cavity (4) between the connecting edge (11) and the dinner plate (2), and the high-temperature-resistant film bag (8) is wrapped in the dinner plate (2) and the inner ring (3).
5. The nutritional meal processing and warming container of claim 4, wherein, The width of the high-temperature-resistant film bag (8) is equal to the height of the corrugated edge (12) after being stretched.
6. The nutritional meal processing and warming container of claim 4, wherein, It also includes a plastic stamp (9), the high-temperature-resistant film bag (8) is fixedly provided with a plastic bag barrel (81) with a predetermined length, one end of the plastic stamp (9) passes through the perforation in the side wall of the inner ring (3); The plastic stamp (9) is fixed with the plastic bag barrel (81), and the plastic bag barrel (81) is stretched with the movement of the plastic stamp (9); The other end of the plastic stamp (9) extends into the hole in the side of the base (1).
7. The nutritional meal processing and warming container of claim 6, wherein, It also includes a push handle (91) arranged in the hole, the side wall of which is connected to the hole through a connecting point, and the push handle (91) is fixedly connected with the plastic stamp (9).
8. The nutritional meal processing and warming container of claim 1, wherein, The base (1) and the dinner plate (2) are made of degradable plastic.
9. The nutritional meal processing and warming container of claim 1, wherein, The end face of the dinner plate (2) is provided with a thermoplastic easy-to-tear plastic cover.