Liquid vaporization heat absorption refrigeration module and transport box

Abstract

Liquid vaporization heat absorption refrigeration module and transport box, the liquid vaporization heat absorption refrigeration module includes a barrier shell, a switch part, a first sealing bag, a cooling layer, a water expansion layer, a water blocking sheet, a heat preservation layer, an absorption layer, a second sealing bag and a sealing film; the first sealing bag and the second sealing bag are respectively filled with liquid to be vaporized, the first sealing bag and the second sealing bag are connected through a capillary, the inner surfaces of the first sealing bag and the second sealing bag are respectively provided with concave-convex patterns, the concave-convex patterns form a number of liquid flow channels and a number of filtering flow channels, and the liquid in the second sealing bag only flows to the capillary through the filtering flow channels. The utility model realizes active refrigeration by means of liquid vaporization heat absorption refrigeration, and the concave-convex patterns require the liquid in the second sealing bag to be filtered before flowing into the capillary, and then flows into the first sealing bag, which solves the problem that the stable low-temperature environment cannot be maintained within the effective time limit due to excessive refrigeration or blockage of the capillary and inability to supply water for refrigeration.

Description

Technical Field

[0001] The utility model relates to the technical field of cold chain transportation, in particular to a liquid vaporization heat absorption refrigeration module and a transportation box. Background Art

[0002] In the traditional cold chain transportation process, in order to prevent the products that need to be cooled from deteriorating and becoming ineffective and to extend the shelf life of the products, refrigerants (such as ice packs, frozen gels, etc.) are generally used to maintain the low temperature state of the products. The refrigerants are placed around the product packaging to provide a cooling effect. On the one hand, this method is only suitable for drugs that need to maintain a low temperature for a short period of time, and the frozen refrigerants need to be prepared in advance, which cannot achieve the "open and use" effect. On the other hand, the melting or consumption of the refrigerant will cause temperature fluctuations, and the temperature control effect is not good.

[0003] In addition, in some existing small active refrigeration devices, the coolant is packaged under the influence of various external factors, resulting in the presence of impurities in the coolant, which causes the capillary tube to be blocked, and the release of the coolant cannot be sustained, making it difficult to ensure the timeliness of refrigeration. Therefore, how to design a liquid vaporization heat absorption refrigeration module that can be used immediately and provide a more durable and stable temperature environment has become a difficult problem in the cold chain transportation industry. Utility Model Content

[0004] In view of the problems raised by the background technology, the purpose of the present utility model is to propose a liquid vaporization heat absorption refrigeration module and a transport box, which solves the problems of complicated temperature control and poor temperature control timeliness in existing cold chain transportation.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A liquid vaporization heat absorption refrigeration module comprises a barrier shell, a switch part, a first sealing bag, a cooling layer, a water expansion layer, a water blocking sheet, a heat preservation layer, an absorption layer, a second sealing bag and a sealing film; the barrier shell is provided with an opening, the opening is covered and sealed by the sealing film, and the barrier shell and the sealing film are sealed to form a sealed cavity;

[0007] The first sealing bag, the cooling layer, the water diffusion layer, the water blocking sheet, the heat preservation layer, the absorption layer and the second sealing bag are sequentially stacked in the sealing cavity, and the first sealing bag is bonded to the inner wall of the barrier shell, and the second sealing bag is bonded to the sealing film; the switch part is located between the first sealing bag and the barrier shell, and the switch part is used to pierce the first sealing bag and the cooling layer;

[0008] The first sealing bag and the second sealing bag are respectively filled with liquid to be vaporized, the first sealing bag and the second sealing bag are connected by a capillary, the inner surfaces of the first sealing bag and the second sealing bag are respectively provided with concave-convex patterns, the concave-convex patterns form a plurality of liquid flow channels in the first sealing bag, the concave-convex patterns form a plurality of filtering flow channels in the second sealing bag, and the liquid in the second sealing bag flows to the capillary only through the filtering flow channels, and the maximum inner diameter of the filtering flow channels is smaller than the inner diameter of the capillary.

[0009] Preferably, when the first sealing bag and the second sealing bag are in a sealed state, the concave-convex patterns on the upper inner surface of the first sealing bag are partially fitted with the concave-convex patterns on the lower inner surface of the first sealing bag, and the unfitted portions form the liquid flow channel; the concave-convex patterns on the upper inner surface of the second sealing bag are partially fitted with the concave-convex patterns on the lower inner surface of the second sealing bag, and the unfitted portions form the filtration flow channel, and the filtration flow channel is arranged close to the capillary.

[0010] Preferably, the concavo-convex pattern is formed by a plurality of convex points arranged and combined, the total height of each two convex points on opposite sides is smaller than the inner diameter of the capillary, and the distance between each two adjacent convex points on the same side is smaller than the inner diameter of the capillary;

[0011] Or, the concave-convex pattern is formed by arranging and combining a plurality of horizontal patterns and a plurality of vertical patterns, the total height of the horizontal patterns and the vertical patterns is smaller than the inner diameter of the capillary; the spacing between every two adjacent horizontal patterns and every two adjacent vertical patterns on the same side is smaller than the inner diameter of the capillary;

[0012] The maximum inner diameter of the filtering channel close to the capillary tube is smaller than the inner diameter of the capillary tube.

[0013] Preferably, the water diffusion layer includes absorbent paper, a vaporization net and breathable cotton; the absorbent paper is attached to the cooling layer, the breathable cotton is attached to the water blocking sheet, and the vaporization net is arranged between the absorbent paper and the breathable cotton to form a vaporization space.

[0014] Preferably, the switch portion comprises a cap body, the top end of the cap body is connected to two piercing members, the piercing members are respectively provided with sharp points capable of piercing the first sealing bag and the cooling conduction layer, and the sharp points are arranged toward the first sealing bag;

[0015] The cap body is provided with a deformation layer, so that when the cap body is pressed, the deformation layer is deformed and cracks are generated after being subjected to the force, and the structure of the cap body is destroyed and cannot rebound.

[0016] Preferably, the barrier shell adopts a composite layer structure of PE-PA-PE, PE-EVOH-PE, PE-EVOH-PA-PE, PE-PA-EVOH-PE or PP-PA-EVOH-PA-PE; the outer layer of the barrier shell is made of PE material or PP material.

[0017] Preferably, the absorption layer is composed of a waterproof breathable bag and anhydrous calcium chloride particles. The anhydrous calcium chloride particles are contained in the waterproof breathable bag, and the anhydrous calcium chloride particles are used to absorb vaporized water vapor.

[0018] Preferably, the cooling layer is a graphene sheet, and the area of ​​the graphene sheet of the cooling layer is matched with the cross-sectional area of ​​the barrier shell; the water blocking sheet is a graphene sheet, and the ratio of the area of ​​the graphene sheet of the water blocking sheet to the area of ​​the graphene sheet of the cooling layer is ≤1:4.

[0019] Preferably, the thermal insulation layer is composed of a waterproof breathable bag and glass fibers. The glass fibers are contained in the waterproof breathable bag. The glass fibers are used to retain cold energy and thus keep warm. The glass fibers have a diameter of 1-100 μm.

[0020] Accordingly, the utility model provides a liquid vaporization heat absorption refrigeration transport box, comprising a vacuum insulation panel, a heat preservation frame, a carton and the liquid vaporization heat absorption refrigeration module;

[0021] The vacuum insulation panel is formed by integrally forming two side panels and a bottom panel, and the two side panels are rotatably connected to the two ends of the bottom panel, and the rotation angle is ≤90°;

[0022] The heat preservation frame is composed of a foam shell surrounded on all sides, and the inner wall of the heat preservation frame is provided with two oppositely arranged grooves and two oppositely arranged avoidance recesses, the grooves are used to clamp the side panels, and the avoidance recesses are used to accommodate the bottom plate, the vacuum insulation board is clamped in the heat preservation frame, and is surrounded by the heat preservation frame to form a square accommodating cavity with an open opening, the liquid vaporization heat absorption refrigeration module is used to cover the open opening of the square accommodating cavity, and a fully enclosed refrigeration cavity is formed in the square accommodating cavity;

[0023] The inner top surface of the carton is provided with cushioning cotton, which is arranged in a ring shape and is used to abut against the sealing film of the liquid vaporization heat absorption refrigeration module; the carton is used to load the liquid vaporization heat absorption refrigeration module, the vacuum insulation panel and the insulation frame.

[0024] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0025] The utility model realizes active refrigeration by liquid vaporization and heat absorption refrigeration. At the same time, the first sealed bag and the second sealed bag filled with liquid are provided with concave-convex patterns, the concave-convex patterns form a plurality of liquid flow channels in the first sealed bag, and the concave-convex patterns form a plurality of filtering flow channels in the second sealed bag, so that the second sealed bag first filters the liquid before flowing into the capillary tube, and then flows into the first sealed bag, and finally the liquid is stably released and then vaporized and heat-absorbed for refrigeration, which solves the problem that a stable low-temperature environment cannot be maintained within the effective time limit due to excessive refrigeration or clogging of the capillary tube and inability to supply water for refrigeration. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0027] Figure 2 This is a schematic structural diagram of a sealed water bag in one embodiment of the utility model;

[0028] Figure 3 yes Figure 2 A partial enlarged view of the filter flow channel;

[0029] Figure 4 yes Figure 3 A partial cross-sectional view of the filter flow channel of the barrier housing without evacuating the vacuum;

[0030] Figure 5 yes Figure 3 A partial cross-sectional view of the filter flow channel after the barrier housing is evacuated;

[0031] Figure 6 It is a structural schematic diagram of a sealed water bag in another embodiment of the utility model;

[0032] Figure 7 yes Figure 6 A partial enlarged view of the filter flow channel;

[0033] Figure 8 yes Figure 6 A cross-sectional view of the filter flow channel of the barrier housing without evacuating the vacuum;

[0034] Fig. 9 yes Figure 6 A cross-sectional view of the filter flow channel after the barrier housing is evacuated;

[0035] Fig.10 It is a structural schematic diagram of a filter flow channel of an embodiment of the utility model;

[0036] Fig.11 This is a schematic structural diagram of a water expansion layer in one embodiment of the utility model;

[0037] Fig.12 It is a structural schematic diagram of a switch portion of an embodiment of the utility model;

[0038] Fig.13 yes Fig.11 A bottom view of the switch portion;

[0039] Fig.14 It is a structural schematic diagram of an absorption layer of an embodiment of the utility model;

[0040] Fig.15 It is a structural schematic diagram of a liquid vaporization heat absorption refrigeration module and a transport box;

[0041] Fig.16 It is a structural schematic diagram of a liquid vaporization heat absorption refrigeration transport box according to an embodiment of the utility model;

[0042] Fig.17 It is a schematic structural diagram of a vacuum insulation panel according to an embodiment of the utility model;

[0043] Fig.18 It is a structural schematic diagram of a heat preservation frame of an embodiment of the utility model.

[0044] Among them: barrier shell 1; switch part 2; first sealing bag 3; cooling layer 4; water expansion layer 5; water blocking sheet 6; thermal insulation layer 7; absorption layer 8; second sealing bag 9; sealing film 10; capillary 391, concave-convex pattern 392; filtering channel 393; absorbing paper 51; vaporization net 52; breathable cotton 53; cap body 21; puncture piece 22; air hole 211; deformation layer 212; waterproof breathable bag 81; anhydrous calcium chloride 82; temperature sensitive sticker 11; deoxidizer 12; vacuum insulation board 13; side plate 131; bottom plate 132; thermal insulation frame 14; groove 141; avoidance recess 142; carton 15; buffer cotton 151. DETAILED DESCRIPTION

[0045] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0047] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or more of the features.

[0048] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0049] The following is combined with Figures 1 to 18 The technical solution of the utility model is further illustrated by specific implementation methods.

[0050] like Figure 1 As shown, the liquid vaporization heat absorption refrigeration module comprises a barrier shell 1, a switch part 2, a first sealing bag 3, a cooling layer 4, a water expansion layer 5, a water blocking sheet 6, a heat preservation layer 7, an absorption layer 8, a second sealing bag 9 and a sealing film 10; the barrier shell 1 is provided with an opening, the opening is covered and sealed by the sealing film 10, and the barrier shell 1 and the sealing film 10 are sealed to form a sealed cavity;

[0051] The first sealing bag 3, the cooling layer 4, the water expansion layer 5, the water blocking sheet 6, the heat preservation layer 7, the absorption layer 8 and the second sealing bag 9 are sequentially stacked in the sealing cavity, and the first sealing bag 3 is arranged in contact with the inner wall of the barrier shell 1, and the second sealing bag 9 is arranged in contact with the sealing film 10; the switch part 2 is located between the first sealing bag 3 and the barrier shell 1, and the switch part 2 is used to pierce the first sealing bag 3 and the cooling layer 4;

[0052] The first sealing bag 3 and the second sealing bag 9 are respectively filled with liquid to be vaporized, and the first sealing bag 3 and the second sealing bag 9 are connected by a capillary 391. The inner surfaces of the first sealing bag 3 and the second sealing bag 9 are respectively provided with concave-convex patterns 392, and the concave-convex patterns 392 form a plurality of liquid flow channels in the first sealing bag 3, and the concave-convex patterns 392 form a plurality of filtering flow channels 393 in the second sealing bag 9, and the liquid in the second sealing bag 9 only flows to the capillary 391 through the filtering flow channels 393, and the maximum inner diameter of the filtering flow channel 393 is smaller than the inner diameter of the capillary 391.

[0053] Specifically, in the barrier shell 1, the switch part 2, the first sealing bag 3, the cold conduction layer 4, the water expansion layer 5, the water blocking sheet 6, the heat preservation layer 7, the absorption layer 8 and the second sealing bag 9 are stacked in sequence, and the bottom opening of the barrier shell 1 is covered and sealed by the sealing film 10. After the liquid vaporization heat absorption refrigeration module is evacuated and compressed into a vacuum state, a vacuum sealed cavity is formed in the barrier shell 1. When the switch part 2 is pressed, the first sealing bag 3 and the cold conduction layer 4 are punctured, and the liquid to be vaporized overflows. In the vacuum state, the boiling point of the liquid becomes lower and it is easy to boil. After boiling, it vaporizes and absorbs heat to cool. The top of the barrier shell 1 releases cold energy to cool the product to be cooled. Among them, the cold conduction layer 4 is used to conduct the cooling temperature of the liquid in the first sealing bag 3 after vaporization, the water expansion layer 5 is used to accelerate the diffusion area and speed of the liquid, the water blocking sheet 6 is used to block the liquid to prevent over-seepage, the heat preservation layer 7 is used to maintain the cooling temperature, and the absorption layer 8 is used to absorb the steam after the liquid is vaporized.

[0054] Furthermore, in order to solve the problem that the liquid to be cooled cannot be continuously supplied due to freezing due to excessive refrigeration or clogging of the capillary tube during use, resulting in the inability to maintain a low-temperature environment within the effective time limit, the capillary tube 391 is designed to connect the first sealed bag 3 and the second sealed bag 9 to achieve slow supply and prevent freezing due to excessive refrigeration. Figure 2-Figure 9As shown, the inner surfaces of the first sealing bag 3 and the second sealing bag 9 are respectively provided with concave-convex patterns, and the concave-convex patterns 392 form a plurality of liquid flow channels in the first sealing bag 3, and the concave-convex patterns 392 form a plurality of filtering channels 393 in the second sealing bag 9, and the liquid in the second sealing bag 9 only flows to the capillary 391 through the filtering channels 393 to filter impurities from the liquid in the second sealing bag 9, and the maximum inner diameter of the filtering channel 393 is smaller than the inner diameter of the capillary 391, that is, the impurities larger than the inner diameter of the capillary 391 can be intercepted in advance by the setting of the filtering channel 393, so as to realize the stable water supply of the capillary 391, and since a plurality of filtering channels 393 are provided, even if one of them is blocked by impurities, the other filtering channels 393 can also filter and supply normally, thereby ensuring that the product to be cooled is continuously and stably kept in a refrigerated state. In addition, the liquid to be cooled loaded in the first sealing bag 3 and the second sealing bag 9 is in a stable state at room temperature and pressure, and then the barrier shell 1 is evacuated, and the upper and lower inner surfaces of the first sealing bag 3 and the second sealing bag 9 are fitted together under pressure, and the liquid in the first sealing bag 3 and the second sealing bag 9 cannot circulate normally. Therefore, the presence of the concave-convex pattern 392 of the first sealing bag 3 makes it impossible to compact the upper and lower inner surfaces to form a liquid flow channel, thereby avoiding the first sealing bag 3 from forming a vacuum seal after the liquid inside it flows out, ensuring that the liquid in the second sealing bag 9 can flow out smoothly and solve the problem of poor temperature control timeliness.

[0055] Preferably, the liquid to be vaporized is water; the sealing film 10 is encapsulated by an aluminum film having good thermal conductivity and barrier properties. The aluminum film is used as the encapsulation of the bottom opening of the barrier shell 1, which can not only more effectively block the entry of molecules such as oxygen and water, but also diffuse the adsorption heat generated by the absorption layer 8 into the external environment. In addition, the aluminum film can be firmly combined with the barrier shell 1 during sealing, and it is not easy to leak after the barrier shell 1 is evacuated and compressed into a vacuum.

[0056] Preferably, when the first sealing bag 3 and the second sealing bag 9 are in a sealed state, the concave-convex pattern 392 located on the upper inner surface of the first sealing bag 3 is partially fitted with the concave-convex pattern 392 located on the lower inner surface of the first sealing bag 3, and the unfitted portion forms the liquid flow channel; the concave-convex pattern 392 located on the upper inner surface of the second sealing bag 9 is partially fitted with the concave-convex pattern 392 located on the lower inner surface of the second sealing bag 9, and the unfitted portion forms the filtration flow channel 393, and the filtration flow channel 393 is arranged close to the capillary 391.

[0057] Specifically, Fig.10As shown, the liquid in the second sealing bag 9 needs to be filtered through the filtering channel 393 formed by the unfitted part of the second sealing bag 9, and then flows into the capillary 391, and finally flows through the liquid channel formed by the unfitted part of the first sealing bag 3, forming a stable flow path, thereby avoiding the phenomenon that the capillary 391 cannot be continuously supplied with liquid after being blocked, resulting in the inability to achieve continuous refrigeration.

[0058] Preferably, if Figure 2-5 As shown, the concave-convex pattern 392 is formed by a plurality of convex points arranged and combined, the total height of each two convex points on opposite sides is smaller than the inner diameter of the capillary 391, and the distance between each two adjacent convex points on the same side is smaller than the inner diameter of the capillary 391;

[0059] or, as Figure 6-9 As shown, the concave-convex pattern 392 is formed by a plurality of horizontal patterns and a plurality of vertical patterns arranged in combination, and the total height of the horizontal patterns and the vertical patterns is smaller than the inner diameter of the capillary 391; the spacing between each two adjacent horizontal patterns and each two adjacent vertical patterns on the same side is smaller than the inner diameter of the capillary 391;

[0060] The maximum inner diameter of the filtering channel 393 close to the capillary tube 391 is smaller than the inner diameter of the capillary tube 391 .

[0061] In a preferred embodiment of this solution, Figure 2 The first sealing bag 3 and the second sealing bag 9 are formed by a plurality of convex points arranged and combined. Figure 3 The filtering channel 393 is formed by a plurality of convex points arranged and combined. Figure 4 3 is a state diagram of the capillary 391 and the concavo-convex pattern 392 before the barrier housing 1 is evacuated. Figure 5 This is a state diagram of the capillary 391 and the concave-convex pattern 392 after the barrier shell 1 is evacuated.

[0062] In another preferred embodiment of this solution, Figure 6 The first sealed bag 3 and the second sealed bag 9 are formed by a combination of a plurality of horizontal stripes and a plurality of vertical stripes. Figure 7 The filtering channel 393 is formed by arranging and combining a plurality of horizontal stripes and a plurality of vertical stripes. Figure 8 3 is a state diagram of the capillary 391 and the concavo-convex pattern 392 before the barrier housing 1 is evacuated. Fig. 9 This is a state diagram of the capillary 391 and the concave-convex pattern 392 after the barrier shell 1 is evacuated.

[0063] By limiting the height and spacing of the concave-convex patterns 392 , the maximum inner diameter of the filtering channel 393 close to the capillary 391 is made smaller than the inner diameter of the capillary 391 , thereby achieving a filtering effect and ensuring that the capillary is not blocked.

[0064] Preferably, if Fig.11 As shown, the water expansion layer includes absorbent paper 51, a vaporization net 52 and breathable cotton 53; the absorbent paper 51 is attached to the cooling layer 4, the breathable cotton 53 is attached to the water blocking sheet 6, and the vaporization net 52 is arranged between the absorbent paper 51 and the breathable cotton 53 to form a vaporization space.

[0065] Specifically, the blotting paper 51 diffuses the outflowing liquid to avoid local water accumulation that affects the cooling effect; preferably, the blotting paper 51 is provided with a diffusion texture, and the diffusion texture is formed by an embossing process, and the diffusion texture is in the shape of leather texture or linen texture or is composed of regularly arranged concave and convex patterns, and the diffusion texture quickly diffuses and extends the liquid along the texture to avoid excessive local water accumulation that affects the cooling effect; the vaporization net 52 expands the space for liquid vaporization and accelerates the rate of liquid vaporization; the breathable cotton 53 further diffuses the liquid, reduces the difficulty of liquid vaporization, and realizes liquid vaporization better and faster; the vaporization net 52 is criss-crossed in a grid arrangement, which can effectively separate the liquid in the blotting paper 51 into several small areas, so as to provide space for liquid vaporization. In a preferred embodiment of the present application, the absorbent paper 51 is made of raw pulp paper, the lateral liquid absorption height of the raw pulp paper is greater than 10mm / 100s, the number of layers of the raw pulp paper is single or multi-layer, the vaporization net 52 is made of PE net or PP net, the thickness of the vaporization net 52 is 0.2-2mm, and the mesh number of the PE net or PP net is 9 meshes, which is conducive to the stability and uniformity of liquid vaporization; the breathable cotton 53 is made of PP cotton; the thickness of the PP cotton is 1-2mm, the air permeability is ≥200mm / s, and the filtration accuracy is 0.5um. The combination of the raw pulp paper, the PE net and the PP cotton reduces the difficulty of liquid vaporization, and the liquid is continuously vaporized while diffusing, forming a stable vaporization space. In addition, the absorbent paper 51, the vaporization net 52 and the breathable cotton 53 are heat-sealed or ultrasonically heat-sealed to form a sealed seal to achieve a three-layer structure connection. The heat-sealed edges are at least two sides, and the heat-sealed edges on both sides are symmetrically arranged to ensure the firmness of the connection between the absorbent paper 51, the vaporization net 52 and the breathable cotton 53 to prevent them from falling off, deflecting or warping when placed in the refrigeration module.

[0066] Preferably, if Fig.12 and Fig.13As shown, the switch part 1 includes a cap body 21, and the top of the cap body 21 is connected to two piercing members 22, and the piercing members 22 are respectively provided with a tip that can pierce the first sealing bag and the cooling layer 4, and the tip is arranged toward the first sealing bag;

[0067] The piercing member 22 is a pyramid structure, the bottom surface of the pyramid structure is connected to the inner top surface of the cap body 21, and the side of the pyramid structure is provided with a groove, the length direction of the groove is the direction extending from the inner top surface of the cap body 21 to the top of the pyramid structure, the width of the groove gradually decreases along the length direction, and the end with the larger groove width is connected to the inner top surface of the cap body 21. It is understandable that the piercing member 22 can also be a piercing member structure formed by a combination of a cylinder and a cone. Preferably, at least two grooves are provided and are distributed opposite to each other. The liquid flows out from the two grooves at the same time, diffuses to the surroundings, and is more evenly distributed, which is conducive to vaporization and enhances the cooling effect. When one of the grooves is blocked, the other groove can still release the liquid normally, thereby improving the stability and reliability of the liquid outflow.

[0068] The cap body 21 is provided with a deformation layer 212 , so that when the cap body 21 is pressed, the deformation layer 212 is deformed and cracked after being subjected to the force, and the structure of the cap body 21 is destroyed and cannot rebound.

[0069] Specifically, when the cap body 21 is pressed, the piercing member 22 connected to the cap body 21 moves downward, and the tip pierces the first sealing bag and the cooling layer. When pressed, the cap body 21 is recessed downward; the cap body 21 is provided with a deformation layer 212 to prevent the cap body 21 from rebounding after the pressing is completed. The irreversible deformation of the cap body 21 indicates that the liquid vaporization heat absorption refrigeration module has been turned on and used, thereby ensuring the effectiveness of the liquid vaporization heat absorption refrigeration module. The cap body 21 is in the shape of a perfect circular arc, an ellipse, or a rectangle; the cap body 21 is made of ABS material or PP material, so as to provide a certain supporting force, ensuring that a certain amount of force is required when pressing, and when the cap body 21 is pressed until the deformation layer 212 breaks, the force required to be continuously applied is reduced, which can save more effort during the pressing process, thereby improving stability and reliability.

[0070] Preferably, the barrier shell 1 adopts a composite layer structure of PE-PA-PE, PE-EVOH-PE, PE-EVOH-PA-PE, PE-PA-EVOH-PE or PP-PA-EVOH-PA-PE; the outer layer of the barrier shell 1 is made of PE material or PP material.

[0071] It should be noted that since the PP material is a wear-resistant material, it is arranged in the outermost layer to prevent surface scratches and wear, thereby maintaining the beautiful appearance and overall durability, and the PP material has good antioxidant and waterproof properties, which can effectively prevent the penetration of external oxygen and water vapor, making the interior of the barrier shell 1 more stable. The PE material has good heat sealing properties and a certain water-blocking function, which can avoid the penetration of water and moisture. The PA material has the characteristics of good ductility, which can prevent the EVOH material from breaking during the stretching and compounding process and play a protective role. The PA material is affordable and has a certain oxygen isolation effect. The EVOH material has high barrier properties and can effectively reduce the oxygen permeability. At the same time, the EVOH material is expensive and easily damaged by external factors, so it needs to be protected. Therefore, the barrier shell 1 is formed by a multilayer lamination or co-extrusion process of PP material, PE material, PA material and EVOH material. The PP material or PE material is arranged in the outer layer, and the EVOH material is arranged in the inner layer. It is easy to form and has improved wear resistance and durability, enhanced antioxidant and waterproof properties, improved overall strength and stability, and effectively prevented the outside world from affecting the interior of the barrier shell 1, thereby extending the shelf life of the liquid vaporization heat absorption refrigeration module.

[0072] In a preferred embodiment, a temperature sensitive sticker 11 for checking the cooling function is provided on the top of the barrier shell 1. Specifically, the temperature change is detected by color change prompt. As the temperature decreases, the color of the temperature sensitive sticker gradually deepens to remind the user that the liquid vaporization heat absorption refrigeration module is in normal use. If the color of the temperature sensitive sticker does not change significantly after the liquid vaporization heat absorption refrigeration module is turned on, it is in an abnormal use state and needs to be replaced in time to avoid damaging the product to be cooled.

[0073] In a preferred embodiment, a deoxidizer 12 for absorbing oxygen molecules is provided at the bottom of the barrier shell 1. Specifically, after the barrier shell 1 is evacuated and compressed to a vacuum, although the barrier shell 1 is formed by a composite barrier material, oxygen molecules slowly penetrate into it due to the influence of the external environment, which will lead to a decrease in refrigeration energy efficiency over time. Therefore, the placement of the deoxidizer to absorb the infiltrated oxygen molecules is conducive to ensuring refrigeration energy efficiency and extending service life.

[0074] Preferably, if Fig.14 As shown, the absorption layer 8 is composed of a waterproof breathable bag 81 and anhydrous calcium chloride particles 82. The anhydrous calcium chloride particles 82 are contained in the waterproof breathable bag 81, and the anhydrous calcium chloride particles 82 are used to absorb vaporized water vapor.

[0075] Specifically, the anhydrous calcium chloride particles 82 are mixed with particles of different sizes, the particle size range of the particles is 1 to 4 mm, and the gaps between the particles form flow channels with different gap sizes. Among the particles, the proportions of 1 mm particles, 2 mm particles, 3 mm particles and 4 mm particles are 65 ± 5: 32 ± 5: 2: 1. The purpose of this setting is to increase the volume of the water-absorbing structure while increasing the particle size to increase the vaporization channel, so that the anhydrous calcium chloride particles 81 in the inner and outer layers can fully play their role to meet the adsorption effect and meet the requirements of the structural design. Since the anhydrous calcium chloride particles 82 have extremely strong water absorption, after absorbing a large amount of water, they can be completely deliquesced and dissolved in the absorbed water to form a solution, and the seepage of the solution is not conducive to the realization of the cooling effect. Therefore, a waterproof and breathable bag 81 is used to accommodate the anhydrous calcium chloride particles 82. Preferably, the waterproof and breathable bag 81 can be a non-woven bag with air permeability and water-blocking function to isolate the calcium chloride converted into liquid from seeping out of the non-woven bag.

[0076] Preferably, the anhydrous calcium chloride particles 82 are spherical calcium chloride particles, and the spherical calcium chloride particles are spherical anhydrous calcium chloride particles with uneven surfaces, or are glossy spherical anhydrous calcium chloride particles with smooth surfaces.

[0077] Specifically, the anhydrous calcium chloride particles 82 are spherical calcium chloride particles. While the spherical calcium chloride particles increase the vaporization contact area, the gaps between several spherical calcium chloride particles can form multiple groups of channels for adsorbing water vapor, which is conducive to the passage of water vapor to the inner layer and adsorption by the spherical calcium chloride particles in the inner layer. The spherical calcium chloride particles can be thorny spherical anhydrous calcium chloride particles with uneven surfaces, or light spherical anhydrous calcium chloride particles with smooth surfaces. The light spherical anhydrous calcium chloride particles have a faster adsorption rate than the thorny spherical anhydrous calcium chloride particles, but due to the irregularity of the shape of the thorny spherical anhydrous calcium chloride particles, the surface is uneven and has a larger surface area, and the gaps between the particles are relatively large, which can provide more adsorption sites, thereby increasing the adsorption area and adsorption effect. Therefore, the thorny spherical anhydrous calcium chloride particles are preferred in the present technical solution.

[0078] In addition, the absorption layer 8 is between the insulation layer 7 and the second sealing bag 9, and the adsorption heat generated by the anhydrous calcium chloride particles 82 heats the liquid in the second sealing bag, so that the liquid reaches the boiling point faster and thus increases the vaporization rate. At the same time, the adsorption heat is isolated by the insulation layer 7 to achieve cooling of the upper area of ​​the liquid vaporization heat absorption refrigeration module, that is, the space where the product to be cooled is located receives cold energy, while the lower area of ​​the liquid vaporization heat absorption refrigeration module dissipates heat to the outside through the sealing film 10.

[0079] Preferably, the cooling layer 4 is a graphene sheet, and the area of ​​the graphene sheet of the cooling layer is matched with the cross-sectional area of ​​the barrier shell 1; the water blocking sheet 6 is a graphene sheet, and the ratio of the area of ​​the graphene sheet of the water blocking sheet to the area of ​​the graphene sheet of the cooling layer is 1:4.

[0080] Specifically, when the liquid in the cooling layer 4 vaporizes and absorbs heat, the cold energy generated quickly diffuses to the surroundings, so that the internal temperature is evenly conducted and distributed. The switch part 2 punctures the graphene sheet of the cooling layer 4 so that the liquid in the first sealing bag 3 can flow out, and the liquid can reach the water expansion layer 5 for continuous water expansion and cooling. Preferably, the ratio of the graphene sheet of the water-blocking sheet 6 to the graphene sheet of the cooling layer 4 is 1:4. The water-blocking sheet 6 is arranged in the central area of ​​the bottom surface of the water expansion layer 5 to isolate the liquid and prevent the liquid from over-seeping and affecting the cooling effect. At the same time, there are spare areas on both sides, which are convenient for the liquid to reach the absorption layer and be adsorbed after vaporization.

[0081] Furthermore, the graphene sheet of the water-blocking sheet 6 is used to prevent the vaporization point of the liquid released from the puncture hole of the switch part 2 from being too concentrated, thereby causing the concentrated area to be overcooled and produce local ice. The design of the graphene sheet of the water-blocking sheet 6 diffuses the concentrated cold energy and reduces the temperature difference between each area.

[0082] Preferably, the thermal insulation layer 7 is composed of a waterproof breathable bag and glass fibers. The glass fibers are contained in the waterproof breathable bag and are used to retain cold energy and thereby keep warm. The glass fibers have a diameter of 1-100 μm.

[0083] Generally, the smaller the diameter of the glass fiber, the better the thermal insulation performance. However, the smaller the contact area between the glass fibers, the smaller the gaps produced, resulting in poor air permeability. Therefore, the use of glass fibers with a thickness of 1-100 μm and a diameter of mixed glass fibers in the thermal insulation layer can reduce the cost of producing the thermal insulation layer, and while ensuring thermal insulation, it does not affect the air permeability, making the cold energy transfer more efficient. In addition, the waterproof and breathable bag can be a non-woven bag with air permeability and water-blocking functions to isolate the residual liquid in the barrier shell 1 to avoid affecting the thermal insulation performance and durability of the glass fiber.

[0084] The utility model also provides a liquid vaporization heat absorption refrigeration transport box, such as Fig.15 As shown, it includes a vacuum insulation panel 13, a heat preservation frame 14, a carton 15 and the liquid vaporization heat absorption refrigeration module;

[0085] The vacuum insulation panel 13 is formed integrally of two side panels 131 and a bottom panel 132. The two side panels 131 are rotatably connected to the two ends of the bottom panel 132. The rotation angle is ≤90°.

[0086] The heat preservation frame 14 is composed of a foam shell surrounded on all sides, and the inner wall of the heat preservation frame 14 is provided with two oppositely arranged grooves 141 and two oppositely arranged avoidance recesses 142, the grooves 141 are used to clamp the side panels 131, and the avoidance recesses 142 are used to accommodate the bottom panel 132, the vacuum insulation panel 13 is clamped in the heat preservation frame 14, and is surrounded by the heat preservation frame 14 to form a square accommodating cavity with an open mouth, the liquid vaporization heat absorption refrigeration module is used to cover the open mouth of the square accommodating cavity, and a fully enclosed refrigeration cavity is formed in the square accommodating cavity;

[0087] The inner top surface of the carton 15 is provided with a buffer cotton 151, which is arranged in a ring shape and is used to abut against the sealing film 10 of the liquid vaporization heat absorption refrigeration module; the carton 15 is used to load the liquid vaporization heat absorption refrigeration module, the vacuum insulation panel 13 and the insulation frame 14.

[0088] Specifically, the product to be cooled is placed in the liquid vaporization heat absorption refrigeration transport box, and after pressing the switch part 2, the liquid vaporization heat absorption refrigeration module is turned upside down on the product to be cooled. The liquid vaporization heat absorption refrigeration module and the liquid vaporization heat absorption refrigeration transport box are embedded, so that the internal space where the product to be cooled is placed is closed, and the cold energy is not easy to be lost.

[0089] Specifically, Figure 16-18 As shown, the vacuum insulation panel 13 is integrally formed, and the two side panels 131 are rotatably connected to the two ends of the bottom panel 132. The two side panels 131 and the bottom panel 132 are panels that match the barrier shell 1 of the liquid vaporization heat absorption refrigeration module; when the rotation angle = 90°, the side panels 131 and the bottom panel 132 are closely connected, and the enclosed space is used to place the liquid vaporization heat absorption refrigeration module and the product to be cooled.

[0090] Furthermore, the insulation frame 14 is composed of a foam shell surrounded on all sides, and the inner wall of the insulation frame 14 is provided with two oppositely arranged grooves 141 and two oppositely arranged avoidance recesses 142, the grooves 141 are used to clamp the side panels 131, and the avoidance recesses 142 are used to accommodate the bottom plate 132, so that the bottom plate 132 of the vacuum insulation panel 13 is kept flush with the insulation frame 14. The vacuum insulation panel 13 can be smoothly clamped in the insulation frame 14, and is surrounded by the insulation frame 14 to form a square accommodating cavity with an open mouth and an inner bottom angle of 90°, so that the accommodating space is increased, and the liquid vaporization heat absorption refrigeration module is used to cover the open mouth of the square accommodating cavity, and a fully enclosed refrigeration cavity is formed in the square accommodating cavity, which has a compact structure, achieves better sealing, and effectively retains the cold energy in the space.

[0091] Furthermore, the buffer cotton 151 is arranged on the inner top surface of the carton 15, and abuts against the sealing film 10 of the liquid vaporization heat absorption refrigeration module. The heat preservation frame 14 and the buffer cotton 151 can effectively prevent the product from being damaged by bumps during transportation while enhancing the heat preservation performance. The foam shell can also support the wall of the carton 15, reduce the wall pressure of the carton 15, and better protect the product during transportation.

[0092] In summary, inside the carton 15, the arrangement of the vacuum insulation panel 13, the heat preservation frame 14 and the buffer cotton 151 provides a fully enclosed refrigeration chamber for the product, ensuring a better cooling effect for the product.

[0093] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. Liquid vaporization heat absorption refrigeration module, characterized in that: It comprises a barrier shell, a switch part, a first sealing bag, a cooling layer, a water expansion layer, a water blocking sheet, a heat preservation layer, an absorption layer, a second sealing bag and a sealing film; the barrier shell is provided with an opening, the opening is covered and sealed by the sealing film, and the barrier shell and the sealing film are sealed to form a sealed cavity; The first sealing bag, the cooling layer, the water diffusion layer, the water blocking sheet, the heat preservation layer, the absorption layer and the second sealing bag are sequentially stacked in the sealing cavity, and the first sealing bag is bonded to the inner wall of the barrier shell, and the second sealing bag is bonded to the sealing film; the switch part is located between the first sealing bag and the barrier shell, and the switch part is used to pierce the first sealing bag and the cooling layer; The first sealing bag and the second sealing bag are respectively filled with liquid to be vaporized, the first sealing bag and the second sealing bag are connected by a capillary, the inner surfaces of the first sealing bag and the second sealing bag are respectively provided with concave-convex patterns, the concave-convex patterns form a plurality of liquid flow channels in the first sealing bag, the concave-convex patterns form a plurality of filtering flow channels in the second sealing bag, and the liquid in the second sealing bag flows to the capillary only through the filtering flow channels, and the maximum inner diameter of the filtering flow channels is smaller than the inner diameter of the capillary.

2. The liquid vaporization heat absorption refrigeration module according to claim 1, characterized in that: When the first sealing bag and the second sealing bag are in a sealed state, the concavo-convex pattern on the upper inner surface of the first sealing bag is partially attached to the concavo-convex pattern on the lower inner surface of the first sealing bag, and the unattached portion forms the liquid flow channel; The concavo-convex patterns on the upper inner surface of the second sealing bag are partially fitted with the concavo-convex patterns on the lower inner surface of the second sealing bag, and the unfitted portions form the filtering channel, which is arranged close to the capillary tube.

3. The liquid vaporization heat absorption refrigeration module according to claim 2, characterized in that: The concavoconvex pattern is formed by a plurality of convex points arranged and combined, the total height of each two convex points on opposite sides is smaller than the inner diameter of the capillary, and the distance between each two adjacent convex points on the same side is smaller than the inner diameter of the capillary; Or, the concave-convex pattern is formed by arranging and combining a plurality of horizontal patterns and a plurality of vertical patterns, and the total height of the horizontal patterns and the vertical patterns is smaller than the inner diameter of the capillary; The distance between every two adjacent horizontal stripes and every two adjacent vertical stripes on the same side is smaller than the inner diameter of the capillary; The maximum inner diameter of the filtering channel close to the capillary tube is smaller than the inner diameter of the capillary tube.

4. The liquid vaporization heat absorption refrigeration module according to claim 1, characterized in that: The water diffusion layer includes absorbent paper, a vaporization net and breathable cotton; the absorbent paper is attached to the cooling layer, the breathable cotton is attached to the water blocking sheet, and the vaporization net is arranged between the absorbent paper and the breathable cotton to form a vaporization space.

5. The liquid vaporization heat absorption refrigeration module according to claim 1, characterized in that: The switch part comprises a cap body, the top end of which is connected to two piercing members, the piercing members are respectively provided with sharp points capable of piercing the first sealing bag and the cooling conduction layer, and the sharp points are arranged toward the first sealing bag; The cap body is provided with a deformation layer, so that when the cap body is pressed, the deformation layer is deformed and cracks are generated after being subjected to the force, and the structure of the cap body is destroyed and cannot rebound.

6. The liquid vaporization heat absorption refrigeration module according to claim 1, characterized in that: The barrier shell adopts a PE-PA-PE, PE-EVOH-PE, PE-EVOH-PA-PE, PE-PA-EVOH-PE or PP-PA-EVOH-PA-PE composite layer structure; the outer layer of the barrier shell is made of PE material or PP material.

7. The liquid vaporization heat absorption refrigeration module according to claim 1, characterized in that: The absorption layer is composed of a waterproof breathable bag and anhydrous calcium chloride particles. The anhydrous calcium chloride particles are contained in the waterproof breathable bag and are used to absorb vaporized water vapor.

8. The liquid vaporization heat absorption refrigeration module according to claim 1, characterized in that: The cooling layer is a graphene sheet, and the area of ​​the graphene sheet of the cooling layer is matched with the cross-sectional area of ​​the barrier shell; the water blocking sheet is a graphene sheet, and the ratio of the area of ​​the graphene sheet of the water blocking sheet to the area of ​​the graphene sheet of the cooling layer is ≤1:

4.

9. The liquid vaporization heat absorption refrigeration module according to claim 1, characterized in that: The heat-insulating layer is composed of a waterproof breathable bag and glass fibers. The glass fibers are contained in the waterproof breathable bag and are used to store cold energy and thereby keep warm. The glass fibers have a diameter of 1-100 μm.

10. Liquid vaporization heat absorption refrigeration transport box, characterized by: It comprises a vacuum insulation panel, a heat preservation frame, a carton and a liquid vaporization heat absorption refrigeration module according to any one of claims 1 to 9; The vacuum insulation panel is formed by integrally forming two side panels and a bottom panel, and the two side panels are rotatably connected to the two ends of the bottom panel, and the rotation angle is ≤90°; The heat preservation frame is composed of a foam shell surrounded on all sides, and the inner wall of the heat preservation frame is provided with two oppositely arranged grooves and two oppositely arranged avoidance recesses, the grooves are used to clamp the side panels, and the avoidance recesses are used to accommodate the bottom plate, the vacuum insulation board is clamped in the heat preservation frame, and is surrounded by the heat preservation frame to form a square accommodating cavity with an open opening, the liquid vaporization heat absorption refrigeration module is used to cover the open opening of the square accommodating cavity, and a fully enclosed refrigeration cavity is formed in the square accommodating cavity; The inner top surface of the carton is provided with cushioning cotton, which is arranged in a ring shape and is used to abut against the sealing film of the liquid vaporization heat absorption refrigeration module; the carton is used to load the liquid vaporization heat absorption refrigeration module, the vacuum insulation panel and the insulation frame.

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