Composite board structure for refrigerated container and refrigerated container
By adopting a composite plate structure consisting of a base layer, a connecting layer, and a corrosion-resistant layer in refrigerated containers, and utilizing a combination of carbon steel plates and thin-layer stainless steel plates, the problem of excessively high costs in refrigerated containers has been solved, achieving effective cost reduction while maintaining performance.
Patent Information
- Application Number
- CN202521946632.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-09-10
AI Technical Summary
The use of solid stainless steel sheets in refrigerated containers results in excessively high costs, necessitating the development of a lower-cost alternative material structure.
The composite plate structure consists of a base layer, a connecting layer, and a corrosion-resistant layer. The base layer uses carbon steel plate, the connecting layer is connected to the stainless steel plate layer through explosive bonding, hot rolling bonding, cold rolling bonding, or friction stir brazing, and the corrosion-resistant layer uses a thinner stainless steel plate, forming a thickness ratio of 1:3 to 2:1.
While ensuring strength and corrosion resistance, the manufacturing cost of refrigerated containers has been reduced by using lower-priced carbon steel plates and reducing the amount of stainless steel used.
Smart Images
Figure CN224857514U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of container technology, specifically, it relates to a composite board structure for refrigerated containers and a refrigerated container. Background Technology
[0002] Refrigerated containers play a crucial role in modern logistics as essential equipment for transporting perishable goods. To ensure effective refrigeration and cargo quality, the container body typically requires excellent corrosion resistance, strength, and insulation properties. Currently, 0.7mm thick stainless steel plates (such as SUS 304 or BN4) are commonly used as the main structural material for the top, side, or door panels of refrigerated containers to meet their operational requirements.
[0003] However, the high cost of stainless steel sheets keeps the manufacturing cost of refrigerated containers high. With the rapid development of the logistics industry, the demand for refrigerated containers is increasing, making cost reduction a pressing issue. Therefore, it is necessary to develop a material structure that can replace traditional 0.7mm stainless steel sheets at a lower cost.
[0004] Therefore, the development of a composite panel structure for refrigerated containers and a refrigerated container itself is an urgent technical problem to be solved in order to address the issue of excessively high costs caused by using integral stainless steel plates in existing refrigerated containers. Utility Model Content
[0005] The purpose of this utility model is to provide a composite panel structure for refrigerated containers, so as to solve the problem that the cost of using integral stainless steel plates in refrigerated containers is too high in the prior art.
[0006] To achieve the above-mentioned objectives, the present invention employs the following technical solution: In one aspect, this utility model proposes a composite panel structure for refrigerated containers, comprising: a base layer, a connecting layer, and a corrosion-resistant layer, wherein the base layer, the connecting layer, and the corrosion-resistant layer extend in the same direction; The base layer and the corrosion-resistant layer are connected by a connecting layer, and the thickness ratio of the corrosion-resistant layer to the base layer is in the range of 1:3 to 2:1.
[0007] In some embodiments of this application, the base layer includes a carbon steel plate layer; The corrosion-resistant layer includes a stainless steel plate layer; The connecting layer includes a diffusion transition layer; The diffusion transition layer is obtained by diffusion from the base layer and the corrosion-resistant layer.
[0008] In some embodiments of this application, the base layer includes a carbon steel plate layer; The corrosion-resistant layer includes a stainless steel plate layer; The connecting layer includes an explosive composite layer; The carbon steel plate layer and the stainless steel plate layer are connected by the explosive composite layer through collision. Alternatively, the connecting layer may include a hot-rolled composite layer, wherein the carbon steel plate layer and the stainless steel plate layer are connected through the hot-rolled composite layer; Alternatively, the connecting layer may include a cold-rolled composite layer, wherein the carbon steel plate layer and the stainless steel plate layer are connected through the cold-rolled composite layer; Alternatively, the connecting layer may include a friction stir brazing layer, wherein the carbon steel plate layer and the stainless steel plate layer are connected by the friction stir brazing layer.
[0009] In some embodiments of this application, the side end includes an outer side plate, an inner side plate, a front corner post, a rear corner post, a front side sealing plate, a rear side sealing plate, a top side beam, a bottom side beam, a top corner seal, and a crash barrier; the two ends of the inner side plate along the horizontal direction are riveted to the front side sealing plate and the rear side sealing plate respectively, the upper end of the inner side plate is riveted to the top corner seal, and the lower end of the inner side plate is inserted into the crash barrier; the two ends of the outer side plate along the horizontal direction are welded to the front corner post and the rear corner post respectively, and the two ends of the outer side plate along the vertical direction are welded to the top side beam and the bottom side beam respectively; the outer side plate includes the composite panel structure for refrigerated containers as described above, and the corrosion-resistant layer of the outer side plate is disposed away from the inner side of the container; the inner side plate includes the composite panel structure for refrigerated containers, and the corrosion-resistant layer of the inner side plate is disposed close to the inner side of the container.
[0010] In some embodiments of this application, it further includes: a top end, a front end, a door end, and a bottom end, wherein the top end and the bottom end are arranged opposite each other in a vertical direction, the door end and the front end are arranged opposite each other in a horizontal direction, and there are two side ends, which are arranged opposite each other between the front end and the door end, and the front end, the door end, and the two side ends are arranged around the top end and the bottom end.
[0011] In some embodiments of this application, the top end includes an outer top plate, an inner top plate, a front top beam, a rear top beam, a front side sealing plate, and a rear side sealing plate; the two ends of the outer top plate near the door end and the front end are respectively welded to the front top beam and the rear top beam, and the two ends of the outer top plate near the two side ends are respectively welded to the top side beam; The inner top plate is riveted to the front side sealing plate and the rear side sealing plate at both ends near the door end and at the front end, respectively; the inner top plate is riveted to the top corner sealing plate at both ends near the side end. The inner roof panel includes the composite panel structure used in refrigerated containers, and the corrosion-resistant layer of the inner roof panel is disposed close to the inside of the container; the outer roof panel includes the composite panel structure used in refrigerated containers, and the corrosion-resistant layer of the outer roof panel is disposed away from the inside of the container.
[0012] In some embodiments of this application, the door end includes an outer door panel and an inner door panel; The outer door panel is inserted into the inner door panel and the rear corner post at both ends along the horizontal direction, respectively. The outer door panel includes the composite board structure used for container storage, and the corrosion-resistant layer of the outer door panel is disposed away from the inner side of the container; the inner door panel includes the composite board structure used for container storage, and the corrosion-resistant layer of the inner door panel is disposed close to the inner side of the container.
[0013] In some embodiments of this application, the thickness of the outer side plate ranges from 0.64 mm to 0.80 mm; The thickness of the inner side plate ranges from 0.56 mm to 0.70 mm.
[0014] In some embodiments of this application, the thickness of the outer top plate ranges from 0.64 mm to 0.80 mm; The thickness of the inner top plate ranges from 0.64 mm to 0.80 mm.
[0015] In some embodiments of this application, the thickness of the outer door panel ranges from 1.28 mm to 1.6 mm; The thickness of the inner door panel ranges from 0.56 mm to 0.70 mm.
[0016] Compared with the prior art, the advantages and positive effects of this utility model are: By setting a base layer to ensure the strength and toughness of the composite panel structure for refrigerated containers, relatively inexpensive carbon steel can be used, controlling costs while ensuring sufficient support strength. By setting a corrosion-resistant layer, the composite panels can be guaranteed to be less susceptible to corrosion in the operating environment of refrigerated containers. In this case, a thin stainless steel layer can be used, reducing the amount of stainless steel used and lowering costs while ensuring corrosion resistance. By forming a connecting layer between the base layer and the corrosion-resistant layer, the connection between the base layer and the corrosion-resistant layer is achieved, ultimately forming the composite panel structure for refrigerated containers.
[0017] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a top view of one embodiment of a refrigerated container proposed in this utility model; Figure 2 This is a front view of one embodiment of a refrigerated container proposed in this utility model; Figure 3 This is an exploded view of one embodiment of the composite panel structure for refrigerated containers proposed in this utility model; Figure 4 yes Figure 1 Sectional view along the middle AA direction; Figure 5 yes Figure 4 A partial schematic diagram at point D in the middle; Figure 6 yes Figure 4 A partial schematic diagram at point E in the middle; Figure 7 yes Figure 2 Sectional view along the BB direction; Figure 8 yes Figure 7 A partial schematic diagram at point F in the middle; Figure 9 yes Figure 7 A partial schematic diagram at point G in the middle; Figure 10 yes Figure 2 A cross-sectional view along the CC direction; Figure 11 yes Figure 10 A partial schematic diagram at point H in the middle; Figure 12 yes Figure 10 A partial schematic diagram at point I in the middle; In the picture, 110. Grassroots level; 120. Connecting layer; 130. Corrosion-resistant layer; 200, Top; 211. Outer roof panel; 212. Front top beam; 213. Rear top beam; 221. Inner top plate; 222. Front side panel; 223. Rear side panel; 300. Front-end; 400. Door End; 411. Outer door panel; 421. Inner door panel; 500, bottom; 600, side end; 611. Outer side plate; 612. Front side panel; 613. Rear side panel; 614. Top corner seal; 615. Bumper guards; 621. Inner side panel; 622, Front corner post; 623. Rear corner post; 624. Top and side beams; 625. Bottom side beam. Detailed Implementation
[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0021] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0025] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.
[0026] Some embodiments of this application relate to a composite panel structure for refrigerated containers, such as... Figure 3 As shown, it includes a base layer 110, a connecting layer 120, and a corrosion-resistant layer 130.
[0027] A connecting layer 120 is formed between the base layer 110 and the corrosion-resistant layer 130. The base layer 110 and the corrosion-resistant layer 130 are connected by the connecting layer 120.
[0028] Specifically, the base layer 110 and the corrosion-resistant layer 130 can be connected by multiple connecting layers 120.
[0029] In some embodiments of this application, the base layer 110 includes a carbon steel plate layer, which has good strength and toughness and is relatively inexpensive.
[0030] The corrosion-resistant layer 130 includes a stainless steel layer. Stainless steel has excellent corrosion resistance, which can ensure that the composite panel is not easily corroded in the environment of refrigerated containers. Using a thinner stainless steel layer can reduce the amount of stainless steel used and lower costs while meeting the corrosion resistance requirements.
[0031] The connecting layer 120 includes an explosive composite layer; the carbon steel plate layer and the stainless steel plate layer are connected by collision through the explosive composite layer. The instantaneous high temperature and pressure generated by the explosive explosion cause the carbon steel plate layer and the stainless steel plate layer to collide and bond.
[0032] In other embodiments of this application, the connecting layer includes a hot-rolled composite layer, through which the carbon steel plate layer and the stainless steel plate layer are connected. The stainless steel plate layer and the carbon steel plate layer are rolled at a high temperature (approximately 1200°C) using a rolling mill to achieve metallurgical bonding.
[0033] In other embodiments of this application, the connecting layer includes a cold-rolled composite layer, wherein the carbon steel plate layer and the stainless steel plate layer are connected by the cold-rolled composite layer. The metals are plastically bonded through multiple rolling passes at room temperature, requiring a pre-hot-rolled billet.
[0034] In other embodiments of this application, the connecting layer includes a friction stir brazing layer, through which the carbon steel plate layer and the stainless steel plate layer are connected. The brazing filler metal is melted by frictional heat generated by the stirring head, thus connecting the stainless steel plate layer and the carbon steel plate layer.
[0035] To ensure the corrosion resistance of the corrosion-resistant layer 130 and the structural strength of the base layer 110, the thickness ratio of the corrosion-resistant layer 130 to the base layer 110 is between 1:3 and 2:1.
[0036] In other embodiments of this application, the base layer 110 comprises a carbon steel plate layer, the corrosion-resistant layer 130 comprises a stainless steel layer, and the connecting layer 120 comprises a diffusion transition layer. The diffusion transition layer is obtained by diffusion between the base layer 110 and the corrosion-resistant layer 130.
[0037] Under high temperature, plastic flow occurs at the contact point between the carbon steel plate layer and the stainless steel layer, forming a diffusion transition layer.
[0038] In other embodiments of this application, a refrigerated container is involved, such as... Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 10As shown, it includes a top 200, a front 300, a door 400, a bottom 500, and a side 600. The top 200 and the bottom 500 are arranged opposite each other in the vertical direction, the door 400 and the front 300 are arranged opposite each other in the horizontal direction, and there are two side 600s. The two side 600s are arranged opposite each other between the front 300 and the door 400, and the front 300, the door 400, and the two side 600s are arranged in a surrounding arrangement between the top 200 and the bottom 500.
[0039] like Figure 7 , Figure 8 , Figure 9 As shown, the side end 600 includes an outer side plate 611, an inner side plate 621, a front corner post 622, a rear corner post 623, a front side sealing plate 612, a rear side sealing plate 613, a top side beam 624, a bottom side beam 625, a top corner seal 614, and a crash plate 615; The inner side plate 621 is riveted to the front side sealing plate 612 and the rear side sealing plate 613 at both ends along the horizontal direction, the upper end of the inner side plate 621 is riveted to the top corner sealing plate 614, and the lower end of the inner side plate 621 is inserted into the anti-collision plate 615.
[0040] The outer side plate 611 is welded to the front corner post 622 and the rear corner post 623 at both ends along the horizontal direction, and to the top side beam 624 and the bottom side beam 625 at both ends along the vertical direction. The outer panel 611 includes the aforementioned composite panel structure for refrigerated containers, and the corrosion-resistant layer 130 of the outer panel 611 is disposed away from the inner side of the container. The inner side panel 621 includes the composite panel structure for refrigerated containers described above, and the corrosion-resistant layer 130 of the inner side panel 621 is disposed close to the inner side of the container.
[0041] like Figure 4 , Figure 5 , Figure 6 As shown, the top 200 includes an outer top plate 211, an inner top plate 221, a front top beam 212, a rear top beam 213, a front side sealing plate 222, and a rear side sealing plate 223.
[0042] The two ends of the outer top plate 211 near the front end 300 and the door end 400 are welded to the front top beam 212 and the rear top beam 213, respectively.
[0043] The two ends of the outer top plate 211 near the two side ends 600 are welded to the top side beam 624 respectively.
[0044] The inner top plate 221 is riveted to the front end plate 222 and the rear end plate 223 at the two ends near the front end 300 and the door end 400, respectively.
[0045] The inner top plate 221 is riveted to the top corner seal 614 at both ends near the two side ends 600.
[0046] The inner roof panel 221 includes a composite panel structure for refrigerated containers; the corrosion-resistant layer 130 of the inner roof panel 221 is located close to the inside of the container.
[0047] The inner top panel 221 includes a composite panel structure for container storage, and the corrosion-resistant layer 130 of the outer top panel 211 is located away from the inner side of the container.
[0048] like Figure 10 , Figure 11 , Figure 12 As shown, the door end 400 includes an outer door panel 411 and an inner door panel 421. The two ends of the outer door panel 411 are respectively inserted into the inner door panel 421 and the rear corner post 623.
[0049] The outer door panel 411 includes a composite panel structure for container storage.
[0050] The outer door panel 411 includes the composite board structure for the container, and the corrosion-resistant layer of the outer door panel 411 is disposed away from the inner side of the container.
[0051] The inner door panel 421 includes the composite board structure for the container, and the corrosion-resistant layer of the inner door panel 421 is disposed close to the inside of the container.
[0052] The thickness of the outer side panel 611 ranges from 0.64 mm to 0.80 mm; The thickness of the inner side panel 621 ranges from 0.56 mm to 0.70 mm.
[0053] The thickness of the outer top plate 211 ranges from 0.64 mm to 0.80 mm; The thickness of the inner top plate 221 ranges from 0.64 mm to 0.80 mm.
[0054] The thickness of the outer door panel 411 ranges from 1.28 mm to 1.6 mm; The thickness of the inner door panel 421 ranges from 0.56 mm to 0.70 mm.
[0055] In other embodiments of this application, the composite panel structure for refrigerated containers may also include an aluminum alloy and a non-metallic composite, wherein the aluminum alloy and the non-metallic composite can be connected by adhesive bonding.
[0056] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
[0057] Whenever possible, the various aspects and features described and shown in the specification can be applied individually, and these individual aspects can serve as the subject of a divisional application.
[0058] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A composite panel structure for refrigerated containers, characterized in that, include: The base layer, the connecting layer, and the corrosion-resistant layer are provided, wherein the base layer, the connecting layer, and the corrosion-resistant layer extend in the same direction; The base layer and the corrosion-resistant layer are connected by a connecting layer. The thickness ratio of the corrosion-resistant layer to the base layer is between 1:3 and 2:
1. The base layer includes a carbon steel plate layer. The corrosion-resistant layer includes a stainless steel plate layer. The connecting layer includes a diffusion transition layer. The diffusion transition layer is obtained by diffusion from the base layer and the corrosion-resistant layer.
2. The composite panel structure for refrigerated containers according to claim 1, characterized in that, The base layer includes a carbon steel plate layer; The corrosion-resistant layer includes a stainless steel plate layer; The connecting layer includes an explosive composite layer; The carbon steel plate layer and the stainless steel plate layer are connected by the explosive composite layer through collision. Alternatively, the connecting layer may include a hot-rolled composite layer, wherein the carbon steel plate layer and the stainless steel plate layer are connected through the hot-rolled composite layer; Alternatively, the connecting layer may include a cold-rolled composite layer, wherein the carbon steel plate layer and the stainless steel plate layer are connected through the cold-rolled composite layer; Alternatively, the connecting layer may include a friction stir brazing layer, wherein the carbon steel plate layer and the stainless steel plate layer are connected by the friction stir brazing layer.
3. A refrigerated container, characterized in that, include: The side end includes an outer side panel, an inner side panel, a front corner post, a rear corner post, a front side sealing plate, a rear side sealing plate, a top side beam, a bottom side beam, a top corner seal, and a crash barrier. The inner side panel is riveted to the front side sealing plate and the rear side sealing plate at both ends along the horizontal direction, the upper end of the inner side panel is riveted to the top corner seal, and the lower end of the inner side panel is inserted into the crash barrier. The outer side panel is welded to the front corner post and the rear corner post at both ends along the horizontal direction, and to the top side beam and the bottom side beam at both ends along the vertical direction. The outer side panel includes a composite panel structure for refrigerated containers as described in any one of claims 1 to 2, with the corrosion-resistant layer of the outer side panel disposed away from the inner side of the container. The inner side panel includes the composite panel structure for refrigerated containers, with the corrosion-resistant layer of the inner side panel disposed close to the inner side of the container.
4. The refrigerated container according to claim 3, characterized in that, Also includes: The device comprises a top end, a front end, a door end, and a bottom end, wherein the top end and the bottom end are arranged opposite each other in a vertical direction, the door end and the front end are arranged opposite each other in a horizontal direction, and there are two side ends, which are arranged opposite each other between the front end and the door end, and the front end, the door end, and the two side ends are arranged around the top end and the bottom end.
5. The refrigerated container according to claim 4, characterized in that, The top end includes an outer top plate, an inner top plate, a front top beam, a rear top beam, a front side sealing plate, and a rear side sealing plate; the two ends of the outer top plate near the door end and the front end are respectively welded to the front top beam and the rear top beam, and the two ends of the outer top plate near the two side ends are respectively welded to the top side beam; The inner top plate is riveted to the front side sealing plate and the rear side sealing plate at both ends near the door end and at the front end, respectively; the inner top plate is riveted to the top corner sealing plate at both ends near the side end. The inner roof panel includes the composite panel structure used in refrigerated containers, and the corrosion-resistant layer of the inner roof panel is disposed close to the inside of the container; the outer roof panel includes the composite panel structure used in refrigerated containers, and the corrosion-resistant layer of the outer roof panel is disposed away from the inside of the container.
6. The refrigerated container according to claim 4, characterized in that, The door end includes an outer door panel and an inner door panel; The outer door panel is inserted into the inner door panel and the rear corner post at both ends along the horizontal direction, respectively. The outer door panel includes the composite board structure used for container storage, and the corrosion-resistant layer of the outer door panel is disposed away from the inner side of the container; the inner door panel includes the composite board structure used for container storage, and the corrosion-resistant layer of the inner door panel is disposed close to the inner side of the container.
7. The refrigerated container according to claim 3, characterized in that, The thickness of the outer side plate ranges from 0.64 mm to 0.80 mm; The thickness of the inner side plate ranges from 0.56 mm to 0.70 mm.
8. The refrigerated container according to claim 5, characterized in that, The thickness of the outer top plate ranges from 0.64 mm to 0.80 mm; The thickness of the inner top plate ranges from 0.64 mm to 0.80 mm.
9. The refrigerated container according to claim 6, characterized in that, The thickness of the outer door panel ranges from 1.28 mm to 1.6 mm; The thickness of the inner door panel ranges from 0.56 mm to 0.70 mm.