A foamed anti-cold bridge freezer and its processing method

Abstract

This invention discloses a foamed anti-cold bridge freezer and its processing method, relating to the field of commercial refrigeration equipment technology. The foamed anti-cold bridge freezer includes a foamed box body and a resin baffle mounting component. The foamed box body includes an outer sheet metal part, an inner sheet metal part, and a side sheet metal part. The resin baffle mounting component has horizontally arranged slot structures on its left and right sides. The processing method includes the following steps: (1) assembling the foamed box body; (2) pre-embedding the resin baffle mounting component without nails; (3) integral foaming molding without the need for metal fasteners to fix it, thus obtaining the foamed anti-cold bridge freezer. This foamed anti-cold bridge freezer has strong heat insulation effect, stable structure, and outstanding anti-cold bridge function, solving the problems of complex processing and assembly of existing freezer frames, poor installation accuracy and strength, and easy condensation.

Description

Technical Field

[0001] This invention relates to the field of commercial refrigeration equipment technology, and in particular to a foamed anti-cold bridge freezer and its processing method. Background Technology

[0002] Currently, in the field of commercial refrigeration equipment technology, freezers are the main refrigeration equipment in supermarkets and convenience stores. Their refrigeration principle utilizes cold air blown out from the bottom and sides, evenly covering every corner of the freezer to achieve product preservation. Freezers typically have an open-type foamed cabinet, which serves as the supporting and insulating frame structure for the entire freezer. The processing of the foamed cabinet usually includes three stages: Sheet metal processing stage: According to the pre-set shape of the freezer, aluminum alloy raw materials are processed through punching, rolling, bending, welding, etc., to produce outer shell sheet metal parts, inner liner sheet metal parts, and side sheet metal parts; Pre-assembly stage: The processed outer shell sheet metal parts, inner liner sheet metal parts, and side sheet metal parts are assembled together to form a hollow pre-assembled cabinet. At this stage, internal components such as condensation pipes, evaporators, and drain pipes are pre-installed; Foaming stage: The pre-assembled cabinet is sent to the foaming production line, and foaming material is injected into the hollow interlayer through pre-reserved injection holes. The foaming material reacts, expands, and eventually solidifies within the cavity, forming a foamed box that combines structural strength and thermal insulation.

[0003] However, the frame of the refrigerator's opening is generally made of aluminum alloy. In actual use, due to the significant difference in humidity and temperature between the inside and outside of the refrigerator, the frame temperature is relatively low, often resulting in a large amount of condensation on the frame surface. This not only affects the food display and shopping experience but also increases the overall energy consumption of the unit. To solve this condensation problem, a glass baffle is usually added to the frame of the refrigerator's opening, i.e., the air vent frame, to reduce the outward transfer of cold air, thereby reducing condensation and preventing cold bridging.

[0004] However, the above methods still have many problems, specifically in the following aspects:

[0005] 1. The process involves numerous steps, high labor costs, long processing time, and low efficiency. Existing glass baffles typically require the foam-molded body of the freezer to be attached to the vent frame using an alloy mounting bracket. Specifically, the bracket has an upward-facing glass slot and two downward-extending legs. The two legs are manually engaged with the bracket at the vent frame of the foam-molded body, secured with silicone sealant, and then screwed in from the side. Finally, the glass baffle is installed into the slot of the bracket. This post-installation method results in a complex assembly process requiring numerous manual steps, including clamping, applying sealant, and screwing. This not only leads to high labor costs but also low processing efficiency, severely restricting production cycle time and batch delivery capabilities.

[0006] 2. The foamed enclosure is prone to deformation, affecting the flatness and strength of the alloy mounting components. During the foaming process, the enclosure's dimensions and frame shape are easily deformed due to foaming pressure and cooling contraction. Existing alloy mounting components are installed after the enclosure is foamed, making them more susceptible to deformation and hindering the flatness of the mounting components against the enclosure frame. Furthermore, the reliance on snap-fit ​​and screw fastening methods poses a risk of loosening and detachment during long-term use, impacting the structural strength and reliability of the foamed enclosure.

[0007] 3. The existing glass baffles are not ideal in preventing thermal bridging. The existing alloy mounting components are made of aluminum alloy, as are the outer shell panels of the foamed enclosure. Because aluminum alloy has a high thermal conductivity, a heat transfer channel exists between it and the outer metal shell of the foamed enclosure, failing to effectively solve the thermal bridging problem and resulting in persistent condensation. Furthermore, most existing alloy mounting components are exposed or semi-exposed snap-fit ​​structures, with parts of the alloy mounting components exposed on the outside of the enclosure, affecting aesthetics.

[0008] It is evident that the existing foam cabinet opening anti-condensation structure of freezers has significant shortcomings in terms of ease of processing and assembly, installation accuracy and strength, and anti-condensation performance, and a more optimized technical solution is urgently needed. Summary of the Invention

[0009] To overcome the shortcomings of existing technologies, the present invention aims to provide a foamed anti-cold bridge freezer for air curtain cabinets, a processing method thereof, and an air curtain cabinet including the foamed anti-cold bridge freezer. The foamed anti-cold bridge freezer of the present invention has strong heat insulation effect, stable structure, and outstanding anti-cold bridge function, solving the problems of obvious cold bridges on the frame of existing freezers, easy condensation, and poor heat insulation performance.

[0010] One of the objectives of this invention is achieved by the following technical solution: a processing method for a foamed anti-cold bridge freezer, the foamed anti-cold bridge freezer comprising a foamed box body and a resin baffle mounting component, the foamed box body comprising an outer sheet metal part, an inner sheet metal part, and a side sheet metal part; the resin baffle mounting component has horizontally arranged slot structures on its left and right sides respectively.

[0011] Includes the following steps:

[0012] (1) Assemble the foam box: According to the preset shape of the freezer, set the outer sheet metal parts and the inner sheet metal parts opposite each other, and leave an opening at the edge of the freezer door. Except for this opening, seal the other side parts of the foam box with the side sheet metal parts.

[0013] (2) Nail-free pre-embedded resin baffle mounting parts: The resin baffle mounting parts are placed at the opening. The tops of the outer shell sheet metal parts and the inner liner sheet metal parts are bent and then respectively horizontally inserted into the slot structure for snap-fit ​​positioning. No metal fasteners are required for fixing. Then the resin baffle mounting parts are pre-embedded on the foamed box body instead of being installed with screws after the foamed box body is foamed, thus obtaining a pre-assembled box frame structure with hollow interlayer.

[0014] (3) Integrated foaming molding: The pre-assembled box frame structure is fed into the foaming production line. Foaming material is injected into the hollow interlayer through the reserved injection hole. The foaming material reacts, expands and finally solidifies in the cavity, and tightens and fixes the entire resin baffle installation part. No metal fasteners are required to fix it, and a foamed anti-cold bridge freezer is obtained.

[0015] Furthermore, in step (2), the decondensation heating pipe is no longer pre-embedded in the foaming box or / and the resin baffle mounting component.

[0016] Furthermore, in step (2), glass glue is applied to the joint of the outer shell sheet metal part, the inner liner sheet metal part and the resin baffle mounting part slot structure for fixing, or the integrated limiting structure built into the slot structure is used for further limiting and pre-fixing.

[0017] Furthermore, in step (3), the injection hole is located at the bottom of the foaming box or at the far end of the opening. When the foaming material is injected into the foaming box, the foaming material fills and expands from bottom to top until it completely presses against and fixes the entire resin baffle mounting component.

[0018] Further, in step (3), polyurethane foam is injected into the interior of the foaming box.

[0019] Furthermore, step (4) includes adding the function of installing a glass baffle or a price strip; a glass mounting groove extending along its length is recessed in the middle of the top surface of the resin baffle mounting component, and the glass baffle is inserted into the glass mounting groove to reduce the outward transmission of cold air; a price strip slot is recessed in the inner wall of the glass mounting groove for locking the price strip, and the price strip is inserted into the price strip slot to display the price strip when necessary.

[0020] Furthermore, in the processing method of the foamed anti-cold bridge freezer, the resin baffle mounting component is a long strip profile integrally formed from heat-insulating resin material, and the internal cross section of the resin baffle mounting component is provided with multiple independent chambers; the multiple chambers extend along the length direction of the cabinet opening frame, and the multiple chambers are arranged at intervals along the width direction of the profile, and each chamber is separated by a resin wall.

[0021] In step (2), when pre-embedding the resin baffle mounting component, the slot structure includes an outer plate snap-fit ​​slot and an inner plate snap-fit ​​slot arranged horizontally on the left and right sides of the resin baffle mounting component. The outer sheet metal part and the inner sheet metal part are respectively provided with a first bending part and a second bending part. When the bending parts of the outer sheet metal part and the inner sheet metal part cooperate with the outer plate snap-fit ​​slot and the inner plate snap-fit ​​slot to be snap-fit ​​and positioned, the multiple chambers are covered in the foam box, and then the entire resin baffle mounting component is pre-embedded.

[0022] Furthermore, in the processing method of the foamed anti-cold bridge freezer, the chambers arranged at intervals along the width direction of the profile include at least three independent chambers, namely a first chamber, a second chamber, and a third chamber. The first chamber is located on the side near the outer shell sheet metal mounting area, the second chamber is located near the inner liner sheet metal mounting area, and the third chamber is located on the side near the opening of the cabinet frame.

[0023] After the inner liner sheet metal part is horizontally inserted into the inner plate slot, the inner plate slot also has a reserved fourth chamber, or / and after the outer shell sheet metal part is horizontally inserted into the outer plate slot, the outer plate slot also has a reserved fourth chamber.

[0024] Furthermore, in the processing method of the foamed anti-cold bridge freezer, the inner side of the resin baffle mounting component is provided with a night curtain snap hook and a return air grille support.

[0025] The second objective of this invention is achieved by the following technical solution: a foamed anti-cold bridge freezer, which is manufactured by the processing method described above.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. Simplified process flow, significantly improved production efficiency, and reduced labor and material costs. In the foamed anti-cold bridge of this invention, the baffle mounting component is pre-embedded into the foamed box during the molding process, eliminating the multiple steps (clamping, applying glass glue, screwing, etc.) required to separately install the alloy mounting component for the glass baffle after the box is foamed in the traditional solution. This significantly reduces manual operation, shortens processing time, greatly improves production efficiency, and reduces labor and material costs, effectively solving the problems of limited production cycle and insufficient batch delivery capacity caused by the numerous processes in the existing technology.

[0028] 2. Stable and reliable structure with no risk of loosening or detachment. This invention employs an integrated foaming structure. During the foaming process, the resin baffle mounting component is directly embedded within the polyurethane foam as part of the foamed box. The foam material fills and encapsulates the entire insulation structure. After foaming, the insulation structure is completely encapsulated and fixed within the polyurethane foam, forming a robust whole with the box. This contrasts sharply with existing technologies that involve manually snapping, applying silicone sealant, or using screws to fix the foamed box—the latter is greatly affected by foaming deformation, resulting in poor installation flatness and a tendency to loosen and detach over long-term use. This invention eliminates these risks, significantly enhancing the structural integrity and durability.

[0029] 3. Eliminating cold bridges at the source significantly improves insulation performance. This invention uses a low thermal conductivity resin material to replace traditional aluminum alloy profiles as the main material of the insulation structure. Simultaneously, multiple chambers spaced apart along the width direction are designed inside the insulation structure. The metal-free insulation structure is integrated into the freezer's frame structure via a pre-foamed composite process, forming a multi-layered insulation barrier of "resin wall + multi-chamber air layer + polyurethane foam." Compared to existing product structures, aluminum alloy solutions, due to their high thermal conductivity and reliance on metal fasteners such as screws for fixation, cannot effectively block heat transfer between internal and external metal components. This invention, through material optimization and the synergistic effect of the multi-chamber structure, significantly reduces thermal conductivity, eliminating cold bridge paths at the source, effectively preventing condensation on the freezer frame, and reducing overall energy consumption.

[0030] 4. Simple and beautiful structure. The thermal insulation structure of this invention is completely embedded inside the foam box and is not exposed, avoiding the problem of exposed or partially exposed thermal insulation structure affecting the aesthetics in traditional solutions, making the cabinet frame simpler and flatter. Attached Figure Description

[0031] Figure 1 This is a schematic diagram (glass baffle scene) of the installation position of the foamed anti-cold bridge freezer according to a preferred embodiment of the present invention, and a partial enlarged schematic diagram thereof;

[0032] Figure 2 This is a schematic diagram (price bar scene) of the installation position of the foamed anti-cold bridge freezer according to a preferred embodiment of the present invention, and a partially enlarged schematic diagram thereof;

[0033] Figure 3 This is a partial structural diagram of a foamed anti-cold bridge freezer according to a preferred embodiment of the present invention after assembly;

[0034] Figure 4 This is a partial structural diagram of a foamed anti-cold bridge freezer according to a preferred embodiment of the present invention after disassembly.

[0035] Figure 5 for Figure 4Enlarged view of point A in the middle;

[0036] Figure 6 This is a schematic diagram of the structure of the resin baffle mounting component according to a preferred embodiment of the present invention.

[0037] In the picture:

[0038] 100. Air curtain cabinet body; 100a. Open cabinet frame;

[0039] 1. Foamed box body; 11. Outer sheet metal parts; 111. First bend; 12. Inner sheet metal parts; 121. Second bend; 13. Side sheet metal parts; 1a. Opening; 1b. Hollow sandwich layer;

[0040] 2. Resin baffle mounting parts; 21. Outer panel snap-fit ​​groove; 22. Inner panel snap-fit ​​groove; 23. Chamber; 231. First chamber; 232. Second chamber; 233. Third chamber; 234. Fourth chamber; 24. Glass mounting groove; 25. Price strip slot; 26. Night curtain snap-fit ​​hook part; 27. Return air grille support part; 2a. First panel; 2b. Second panel; 2c. Third panel; 2d. First connecting plate; 2e. Second connecting plate; 2f. Third connecting plate; 2g. Fourth connecting plate;

[0041] 3. Glass baffle;

[0042] 4. Price tag;

[0043] 200. Display shelves;

[0044] 300. Air curtain cabinet. Detailed Implementation

[0045] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0046] Example 1

[0047] like Figures 1-6 As shown, an air curtain cabinet 300 includes an air curtain cabinet body 100 and a display shelf 200 disposed on the air curtain cabinet body 100; the air curtain cabinet body 100 has an open cabinet frame 100a, and the air curtain cabinet body uses the foamed anti-cold bridge freezer described in this invention.

[0048] The foamed anti-cold bridge freezer includes a foamed cabinet 1 and a resin baffle mounting component 2. The foamed cabinet 1 includes an outer sheet metal part 11, an inner sheet metal part 12, and a side sheet metal part 13. The outer sheet metal part 11 and the inner sheet metal part 12 are arranged opposite to each other, with an opening 1a at the edge of the freezer's opening. The outer sheet metal part 11 and the inner sheet metal part 12 are respectively provided with a first bend 111 and a second bend 121 at the opening. Except for the opening, the remaining side parts of the foamed cabinet 1 are sealed by the side sheet metal parts 13. The resin baffle mounting component 2 is sealed horizontally on both sides. The outer panel snap-fit ​​groove 21 and inner panel snap-fit ​​groove 22 are designed to engage with the bent portions of the outer sheet metal part 11 and the inner sheet metal part 12 for positioning without the need for metal fasteners. This allows the resin baffle mounting part 2 to be pre-embedded in the foamed box 1, rather than being installed with screws after the foamed box 1 has finished foaming. This results in a pre-assembled box frame structure with a hollow interlayer 1b. The hollow interlayer 1b of the foamed box 1 is filled with foaming material (not shown in the figure). The foaming material reacts, expands and eventually solidifies in the cavity, and then presses against and fixes the entire resin baffle mounting part 2 without the need for metal fasteners, resulting in a foamed anti-cold bridge freezer.

[0049] The freezer door frame is typically where the air inlet and outlet are located. Existing split-molded glass baffles usually require alloy mounting parts and numerous metal screws and other fasteners for fixing at the door frame. However, the foamed anti-cold bridge freezer of this invention has no metal structure at the door frame. That is, the outer sheet metal parts and inner sheet metal parts are no longer connected by alloy side sheet metal parts 13. Instead, they are assembled by the resin baffle mounting parts themselves and the metal plates. Finally, the foamed material expands and cures to tighten the components at the door frame, eliminating the need for fixing with metal screws and other fasteners. This achieves alloy-free mounting parts, nail-free assembly, and completely avoids the cold bridge effect of the door frame sheet metal parts and screw positions.

[0050] Furthermore, existing glass baffle mounting components and foamed cabinet 1 are typically manufactured separately, meaning the cabinet is basically assembled before further installation. In contrast to this separate assembly method, this invention eliminates the need for handling the foamed cabinet 1 during secondary assembly, reducing the time spent applying sealant and screws, thus increasing efficiency by 100%. Simultaneously, the sheet metal body reduces the need for opening metal plates at openings and drilling holes for screw fastening of alloy mounting components, reducing cumbersome processes and lowering material costs. The baffle mounting component of this invention is pre-constructed along with the freezer's foamed structure, becoming part of the cabinet structure, thus avoiding the subsequent installation of the glass baffle mounting component, thereby reducing assembly steps.

[0051] In some preferred embodiments, the resin baffle mount 2 is designed as a glass baffle mounting structure with more functions. For example, the top surface of the resin baffle mount 2 has a recessed glass mounting groove 24 extending along its length, and the glass baffle 3 is inserted into the glass mounting groove 24 to reduce the outward transfer of cold air; the inner wall of the glass mounting groove 24 has a recessed price strip slot 25 for holding the price strip 4, and the price strip 4 is inserted into the price strip slot 25 to display the price strip 4 when necessary; the inner side of the resin baffle mount 2 has a night curtain hook portion 26 and a return air grille support portion 27.

[0052] The resin baffle mounting component 2 of the present invention integrates a night curtain connecting structure and a glass mounting groove 24. The glass mounting groove 24 can also be used as a price strip slot 25 and a glass baffle 3 snap-fit ​​slot, realizing multiple uses in one piece and further simplifying the types of cabinet opening parts and assembly process.

[0053] In some preferred embodiments, the pre-embedded resin baffle mounting component 2 of the present invention is a long strip profile integrally molded from resin material. The profile has multiple chambers 23 extending along its length, and these chambers 23 are spaced apart along the width of the profile, separated by resin walls. In this embodiment, the specific number of chambers 23 can be adjusted according to actual heat insulation requirements, preferably 3 to 5, and most preferably 4. This structure uses a resin material with low thermal conductivity to replace the traditional aluminum alloy profile as the main material of the heat insulation structure. Simultaneously, it designs multiple chambers 23 spaced apart along the width, utilizing multiple air layers to significantly enhance thermal resistance, slowing down the outward transfer of cold energy, forming an air barrier layer. The thermal resistance is much higher than that of solid or single-cavity heat insulation strips, resulting in a significant improvement in heat insulation capacity.

[0054] Specifically, the resin baffle mounting component 2 has three independently spaced chambers 23 along the width of the profile, namely a first chamber 231, a second chamber 232, and a third chamber 233. The first chamber 231 is located near the mounting area of ​​the outer shell sheet metal component 11, the second chamber 232 is located near the mounting area of ​​the inner liner sheet metal component 12, and the third chamber 233 is located near the opening 1a of the cabinet frame. After the inner liner sheet metal component 12 is horizontally inserted into the inner panel snap-fit ​​groove 22, the inner panel snap-fit ​​groove 22 also reserves a fourth chamber 234, or / and after the outer shell sheet metal component 11 is horizontally inserted into the outer panel snap-fit ​​groove 21, the outer panel snap-fit ​​groove 21 also reserves a fourth chamber 234.

[0055] After testing, under standard operating conditions, with the same four-chamber insulation structure, the pre-embedded assembly of this invention improves the insulation efficiency, anti-condensation effect, and anti-cold bridge effect of the freezer by 60% compared to the separately molded assembly. It is evident that the foamed anti-cold bridge freezer of this invention has strong insulation effect, stable structure, and outstanding anti-cold bridge function, solving the problems of easy condensation on the frame, obvious cold bridges, and poor insulation performance of existing freezers.

[0056] Specifically, such as Figures 5-6 As shown, the resin baffle mounting component 2 has a roughly rectangular cross-sectional shape, including a first panel 2a, a second panel 2b, and a third panel 2c arranged horizontally from bottom to top, and a first connecting plate 2d, a second connecting plate 2e, a third connecting plate 2f, and a fourth connecting plate 2g arranged vertically from the outside of the freezer to the inside. The above-mentioned plates are interlocked. The bottom surface of the first panel 2a serves as a support surface for contact with the foaming material. The glass mounting groove 24 is disposed between the second connecting plate 2e and the third connecting plate 2f. The first chamber 231 is disposed between the first connecting plate 2d and the second connecting plate 2e and is close to the mounting area of ​​the outer shell sheet metal component 11. The second chamber 232 is disposed between the third connecting plate 2f and the fourth connecting plate 2g and is close to the mounting area of ​​the inner liner sheet metal component 12. The third chamber 233 is disposed between the first panel 2a and the second panel 2b and is close to the opening 1a of the cabinet frame.

[0057] In some embodiments, mounting structures are provided on the left and right sides of the profile to fix the outer sheet metal part 11 and the inner sheet metal part 12 of the foam box 1. In this embodiment, the mounting structure is as follows: the outer plate snap-fit ​​groove 21 is located on the outer side of the third connecting plate 2f, and the inner plate snap-fit ​​groove 22 is located on the inner side of the first connecting plate 2d. This design can satisfy the overall insulation effect and increase the concealment effect, and also leave design space for the additional functions of the pre-embedded structure. When the inner sheet metal part 12 is horizontally snapped into the inner plate snap-fit ​​groove 22, the fourth chamber 234 is still left between the inner sheet metal part 12 and the first panel 2a, or / and when the outer sheet metal part 11 is horizontally snapped into the outer plate snap-fit ​​groove 21, the fourth chamber (not shown in the figure) is still left between the outer sheet metal part 11 and the third panel 2c.

[0058] In this embodiment, the resin baffle mounting component 2 offers advantages in terms of thermal insulation: This structure uses an integrated extruded profile to form four independent chambers 23 (first to fourth chambers). Each chamber 23 is completely physically isolated by the resin profile wall, with no connecting channels. This avoids the defects of direct convection of hot and cold air in a single large chamber or simple two-chamber design, structurally blocking the convection heat transfer path of hot and cold air and creating conditions for subsequent foaming filling. Traditional thermal insulation structures rely solely on the air within the chamber 23 as the thermal insulation medium. Due to the interconnectedness of the chambers, the air can flow freely, resulting in limited thermal insulation and an inability to adapt to the foaming filling process, leading to unstable thermal insulation performance. The glass baffle 3 is installed in the glass mounting groove 24 in the middle of the profile. The inner wall of the glass mounting groove 24 adopts a non-sheet metal direct contact thermal insulation support design. An air buffer layer is formed between the glass and the metal sheet metal parts of the foam box 1 through the multi-chamber wall, completely avoiding direct contact between the sheet metal parts and the glass, structurally cutting off the cold bridge heat transfer path. In addition, the night curtain latch hook 26 is formed by bending the end of the third panel 2c near the inner side, while the return air grille support 27 is formed by horizontally extending the end of the second panel 2b near the inner side.

[0059] This invention employs a foam-type anti-cold bridge freezer with "integrated foam pre-embedded assembly + resin material + multi-chamber structure". First, the processing of this pre-embedded structure reduces the use of the original foam box body 1's side sheet metal parts 13, and uses the resin baffle mounting parts 2 for integrated molding, simplifying the process, reducing costs, and improving production efficiency. Second, the inner layer of polyurethane foam serves as the core insulation body, relying on the polyurethane foam material to stably block heat conduction and compensate for the defects of air layer convection, cold bridging, and moisture absorption; at the same time, the irregular and narrow space of the air outlet can be formed by the multi-chamber resin structure, solving the problems of pure foam being unable to form thin-walled irregular shapes and having excessive weight. Finally, the outer layer of resin multi-chamber air layer acts as the first-level buffer against temperature differences, significantly reducing the temperature difference between the inner and outer surfaces, reducing the absolute temperature difference on both sides of the polyurethane foam, and weakening the internal radiative heat transfer of the foam material; the multi-chamber segmentation blocks large-scale convection, serving as the first heat insulation buffer layer, while also being lightweight and adaptable to the irregular shape of the air outlet. The above multiple heat insulation barriers achieve synergistic heat insulation gains. In summary, this invention, through a comprehensive technical solution of "integrated foaming pre-embedded assembly + resin material + multi-chamber structure", not only meets the needs of strength and additional functions of the foaming box 1, but also fulfills the function of preventing cold bridges, while improving production efficiency and reducing production costs, and solves multiple problems in the prior art such as complex processing and assembly, installation accuracy and strength, and condensation.

[0060] Example 2

[0061] Taking the foamed anti-cold-bridge freezer used in the air curtain cabinet of Example 1 as an example, the relevant structure of Example 1 is introduced into this example to illustrate its assembly and processing method. The processing method of the foamed anti-cold-bridge freezer includes the following steps:

[0062] (1) Assemble the foam box 1: According to the preset shape of the open air curtain cabinet, set the outer sheet metal part 11 and the inner sheet metal part 12 opposite to each other, and leave an opening 1a at the edge of the cabinet opening. Except for the opening 1a, seal the other side parts of the foam box 1 with the side sheet metal parts 13.

[0063] (2) Nail-free pre-embedded resin baffle installation parts: The resin baffle installation parts 2 are placed at the opening 1a. The tops of the outer shell sheet metal parts 11 and the inner liner sheet metal parts 12 are bent and respectively horizontally inserted into the slot structure for snap-fit ​​positioning. No metal fasteners are required for fixing. Then the resin baffle installation parts 2 are pre-embedded on the foamed box 1 instead of installing with screws after the foamed box 1 is foamed, thus obtaining a pre-assembled box frame structure with a hollow interlayer 1b.

[0064] (3) Integrated foaming molding: The pre-assembled box frame structure is fed into the foaming production line. Foaming material is injected into the hollow interlayer 1b through the reserved injection hole. The foaming material reacts, expands and finally solidifies in the cavity, and tightens and fixes the entire resin baffle mounting part 2. No metal fasteners are required to fix it, and a foamed anti-cold bridge freezer is obtained.

[0065] As a further preferred option, in step (2), the decondensation heating pipe is no longer pre-embedded in the foaming box 1 or / and the resin baffle mounting component 2.

[0066] This structure, without the installation of a decondensation heating pipe, is more effective than the existing method of adding a decondensation heating pipe as a means of decondensation removal. It can be seen that this solution can save the complex process of arranging and wiring heating pipes and electrical circuits and the process of adapting and improving the structure, making the structure simpler and the effect better.

[0067] As a further preferred option, in step (2), glass glue is applied to the joint of the outer shell sheet metal part 11, the inner liner sheet metal part 12 and the resin baffle mounting part 2 slot structure for fixing, or the slot structure is further limited and pre-fixed by an integrally formed limiting structure.

[0068] As a further preferred option, in step (3), polyurethane foam is injected into the interior of the foaming box 1.

[0069] As a further preferred embodiment, the injection hole is located at the bottom of the foaming box 1 or at the far end of the opening 1a. When foaming material is injected into the foaming box 1, the foaming material fills and expands from bottom to top until it completely presses against and fixes the entire resin baffle mounting component 2. The foaming box 1 manufactured by this design will not have defects such as leakage or missing foam, and the installation firmness of the resin baffle mounting component 2 is high.

[0070] As a further preferred option, this processing method also includes step (4) adding the function of installing a glass baffle 3 or a price strip 4; a glass mounting groove 24 extending along its length is recessed in the middle of the top surface of the resin baffle mounting component 2, the glass baffle 3 is inserted into the glass mounting groove 24 to reduce the transfer of cold air to the outside; the inner wall of the glass mounting groove 24 is recessed with a price strip slot 25 for locking the price strip 4, the price strip 4 is inserted into the price strip slot 25 to display the price strip 4 when necessary.

[0071] As a further preferred embodiment, in this processing method, the resin baffle mounting component 2 is a long strip profile integrally formed from heat-insulating resin material, and the internal cross section of the resin baffle mounting component 2 is provided with multiple independent chambers 23; the multiple chambers 23 extend along the length direction of the cabinet opening frame, and the multiple chambers 23 are arranged at intervals along the width direction of the profile, and each chamber 23 is separated by a resin wall.

[0072] In step (2), when pre-embedding the resin baffle mounting component, the slot structure includes an outer plate snap-fit ​​slot and an inner plate snap-fit ​​slot arranged horizontally on the left and right sides of the resin baffle mounting component. The outer shell sheet metal part and the inner liner sheet metal part are respectively provided with a first bending part and a second bending part. When the bending parts of the outer shell sheet metal part and the inner liner sheet metal part are engaged and positioned with the outer plate snap-fit ​​slot and the inner plate snap-fit ​​slot, the multiple chambers 23 are enclosed in the foam box 1, and then the entire resin baffle mounting component 2 is pre-embedded. This setting can improve the strength of the foam box 1 and the anti-cold bridging effect.

[0073] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A processing method for a foamed anti-cold bridge freezer, characterized in that, The foamed anti-cold bridge freezer includes a foamed box body and a resin baffle mounting component. The foamed box body includes an outer sheet metal part, an inner sheet metal part, and a side sheet metal part. The resin baffle mounting component has horizontally arranged slot structures on its left and right sides. Includes the following steps: (1) Assemble the foam box: According to the preset shape of the freezer, set the outer sheet metal parts and the inner sheet metal parts opposite each other, and leave an opening at the edge of the freezer door. Except for this opening, seal the other side parts of the foam box with the side sheet metal parts. (2) Nailless pre-embedded resin baffle installation parts: The resin baffle installation parts are placed at the opening, and the tops of the outer shell sheet metal parts and the inner liner sheet metal parts are bent and respectively horizontally inserted into the slot structure for snap-fit ​​positioning. (3) Integrated foaming molding: The pre-assembled box frame structure is fed into the foaming production line. Foaming material is injected into the hollow interlayer through the reserved injection hole. The foaming material reacts, expands and finally solidifies in the cavity, and then tightens and fixes the entire resin baffle installation part.

2. The processing method of the foamed anti-cold bridge freezer as described in claim 1, characterized in that, In step (2), the decondensation heating pipe is no longer pre-embedded in the foaming box or / and the resin baffle mounting component.

3. The processing method of the foamed anti-cold bridge freezer as described in claim 1, characterized in that, In step (2), glass glue is applied to the joint of the outer shell sheet metal part, the inner liner sheet metal part and the resin baffle mounting part slot structure for fixing, or the slot structure is further limited and pre-fixed by an integrally formed limiting structure.

4. The processing method of the foamed anti-cold bridge freezer as described in claim 1, characterized in that, In step (3), the injection hole is located at the bottom of the foaming box or at the far end of the opening. When foaming material is injected into the foaming box, the foaming material fills and expands from bottom to top until it completely presses against and fixes the entire resin baffle mounting component.

5. The processing method of the foamed anti-cold bridge freezer as described in claim 1, characterized in that, In step (3), polyurethane foam is injected into the foaming box.

6. The processing method of the foamed anti-cold bridge freezer as described in claim 1, characterized in that, It also includes step (4) adding the function of installing a glass baffle or a price strip; a glass mounting groove extending along its length is recessed in the middle of the top surface of the resin baffle mounting component, and the glass baffle is inserted into the glass mounting groove to reduce the transfer of cold air to the outside; a price strip slot for locking the price strip is recessed in the inner wall of the glass mounting groove, and the price strip is inserted into the price strip slot.

7. The processing method of the foamed anti-cold bridge freezer as described in claim 1, characterized in that, The resin baffle mounting component is a long strip profile integrally formed from heat-insulating resin material. The internal cross-section of the resin baffle mounting component has multiple independent chambers. The multiple chambers extend along the length direction of the cabinet frame and are spaced apart along the width direction of the profile. Each chamber is separated by a resin wall. In step (2), when pre-embedding the resin baffle mounting component, the slot structure includes an outer plate snap-fit ​​slot and an inner plate snap-fit ​​slot arranged horizontally on the left and right sides of the resin baffle mounting component. The outer sheet metal part and the inner sheet metal part are respectively provided with a first bending part and a second bending part. When the bending parts of the outer sheet metal part and the inner sheet metal part cooperate with the outer plate snap-fit ​​slot and the inner plate snap-fit ​​slot to be snap-fit ​​and positioned, the multiple chambers are covered in the foam box, and then the entire resin baffle mounting component is pre-embedded.

8. The processing method of the foamed anti-cold bridge freezer as described in claim 7, characterized in that, The chambers arranged at intervals along the width of the profile include at least three independent chambers, namely a first chamber, a second chamber, and a third chamber. The first chamber is located near the mounting area of ​​the outer shell sheet metal part, the second chamber is located near the mounting area of ​​the inner liner sheet metal part, and the third chamber is located near the opening side of the cabinet frame. After the inner liner sheet metal part is horizontally inserted into the inner plate slot, the inner plate slot also has a reserved fourth chamber, or / and after the outer shell sheet metal part is horizontally inserted into the outer plate slot, the outer plate slot also has a reserved fourth chamber.

9. The processing method of the foamed anti-cold bridge freezer as described in claim 1, characterized in that, The inner side of the resin baffle mounting component is provided with a night curtain snap hook and a return air grille support.

10. A foamed anti-cold-bridge freezer, characterized in that, It is prepared by the processing method described in any one of claims 1-9.

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