A cryogenic tank door seal structure

Abstract

The utility model discloses a kind of deep cooling box door seal structure, including the box door structure and box body structure connected by hinge, box door structure is clamped with integrated full PVC door frame, three same-depth adhesive tape inlets are set in the end face of full PVC door frame opposite box body structure, box body structure side surface is sequentially provided with staggered rear inside corner column and inside plate according to from outside to inside, rear inside corner column is clamped with rear side PVC profile, rear side PVC profile other end is clamped with rear side lining plate, and rear side lining plate other end is fixed on inside plate. The utility model integrates the originally segmented butt joint PVC door frame section and aluminum alloy door frame section into integrated high-strength full PVC door frame, fundamentally eliminates the problem of aluminum alloy door frame rusting;Increase the number of rear side PVC profile's hook, reduce the gap between door gap, reduce the risk of original insertion recess.

Description

Technical Field

[0001] This utility model relates to the field of refrigerated container technology, and more specifically, to a cryogenic container door seal structure. Background Technology

[0002] Due to their special insulation requirements, cryogenic chambers require extra-thick insulation layers. However, existing cryogenic chamber door frames are composed of PVC and aluminum alloy sections. (See attached diagram in the instruction manual.) Figure 2 The diagram shown is a schematic of an existing cryogenic chamber door seal structure, including a fixed rear inner corner post 6. A rotatable door structure is located on the outer side of the rear inner corner post 6. A rear PVC profile 4 is connected to the inner side of the rear inner corner post 6. The outer end of the rear PVC profile 4 has a single snap-fit ​​hook. The other end of the rear PVC profile 4 has a latch, into which a rear inner lining plate 5 is inserted. The other end of the rear inner lining plate 5 is fixed to the inner side panel 7 inside the chamber. (Door structure...) The door frame consists of two parts: an aluminum alloy door frame section 3 and a PVC door frame section 2. One end of the aluminum alloy door frame section 3 is bolted to the door hinge. The other end of the aluminum alloy door frame section 3, opposite the rear inner corner post 6, has a rubber strip inlet and a split inlet in sequence from the outside to the inside. An outer rubber strip 8 is inserted into the rubber strip inlet. The outer rubber strip 8 has only two upturned ends. The longer upturned end covers and is stuck to the outer end of the rear inner corner post 6, and the shorter upturned end abuts against the end edge of the rear inner corner post 6. The split inlet is used to insert the PVC door frame section 2. The joint end of the PVC door frame section 2 has two folded sections. One folded section connects to the split inlet of the aluminum alloy door frame section 3, and the other end, in conjunction with its own structure, forms two rubber strip inlets with different depths. These two rubber strip inlets are respectively inserted into the corresponding inner rubber strip 9, which abuts against the rear inner lining plate 5. An additional hook structure is provided at the other end of the PVC door frame to engage the inner side plate 7 of the box door structure. The rear inner lining panel 5 has a multi-bent structure, and the inner panel 7 is staggered with the rear inner corner post 6. The rear inner lining panel 5 fills the relevant dimensional differences and ensures structural integrity. The three rubber strip inlays in the door frame have different depths due to the segmented door frame design.

[0003] However, this two-section door frame structure has a potential difference between the aluminum alloy and the steel, making it prone to rusting. The two-section connection method also introduces potential problems in this part of the structure. Because customers have requirements for the corrosion resistance of the door frame structure, the insulation layer usually has a thickness requirement and there are three rubber strips. This makes it easy for the rear PVC profile 4 and the rear inner lining plate 5 to be recessed, resulting in a larger door gap and affecting the sealing effect of the cabinet door. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a cryogenic chamber door sealing structure to solve one or more of the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A cryogenic enclosure door sealing structure includes an enclosure door structure and an enclosure body structure connected by hinges. An integral full PVC door frame is fitted onto the enclosure door structure. The full PVC door frame has three rubber strip inlays of the same depth on the end face of the enclosure body structure. The side of the enclosure body structure has staggered rear inner corner posts and inner side panels arranged in order from the outside to the inside. A rear PVC profile is fixed on the rear inner corner post. A rear inner lining plate is clamped to the other end of the rear PVC profile. The other end of the rear inner lining plate is attached to and fixed on the inner side panel.

[0007] The outermost adhesive strip inlet is fitted with an outer adhesive strip, which abuts against the outer end face of the full PVC door frame and the outer end face of the rear inner corner post; the two innermost adhesive strip inlets are fitted with two inner adhesive strips, which abut against the rear PVC profile.

[0008] Furthermore, the outer end of the rear PVC profile is provided with a locking section with a hook structure on the side opposite to the door structure, and the inner end of the rear PVC profile is provided with a locking section with a hook structure on the side opposite to the door structure. The locking interface on the locking section is inserted into one end of the rear inner lining plate, and the mating groove on the locking section is engaged with the folded end of the rear inner corner post.

[0009] Furthermore, the two ends of the all-PVC door frame away from the box structure are respectively provided with clamping openings, which are snapped onto the box door structure.

[0010] Furthermore, the rear inner lining plate has a multi-segment structure, with the side of the rear inner lining plate closest to the box structure connecting to the rear PVC profile, and the side of the rear inner lining plate furthest from the box structure connecting to the inner side plate.

[0011] Furthermore, the outer end of the outer adhesive strip has a double-hook structure, and the outer end face of the outer adhesive strip is hooked and abuts against the full PVC door frame and the rear inner corner post, respectively.

[0012] Furthermore, the end of the inner rubber strip is a fully enclosed arc-shaped structure and abuts against the rear PVC profile.

[0013] In summary, this utility model has the following beneficial effects: by integrating the originally segmented PVC door frame segments and aluminum alloy door frame segments into a single high-strength all-PVC door frame, the problem of aluminum alloy door frames rusting is fundamentally eliminated; by increasing the number of hooks on the rear PVC profile, the gap between the door seams is reduced, and the risk of the original joints being recessed is reduced. Attached Figure Description

[0014] Figure 1A schematic diagram of one embodiment of this utility model;

[0015] Figure 2 A schematic diagram of the prior art provided by this utility model.

[0016] In the diagram: 1. Full PVC door frame; 2. PVC door frame section; 3. Aluminum alloy door frame section; 4. Rear PVC profile; 5. Rear inner lining panel; 6. Rear inner corner post; 7. Inner side panel; 8. Outer rubber strip; 9. Inner rubber strip. Detailed Implementation

[0017] Example:

[0018] The following is in conjunction with the appendix Figure 1-2 The present invention will be described in further detail below.

[0019] by Figure 1 Based on perspective, Figure 2 This is a structural comparison with existing technologies. Figure 1 The right side is the direction outward from the box, the left side is the direction inward from the box, the top is the direction closer to the center of the box, and the bottom is the direction away from the center of the box.

[0020] A cryogenic enclosure door sealing structure is an improvement upon the existing door structure and enclosure structure connected by a hinge mechanism. The enclosure structure, from right to left, includes a rear inner corner post 6 and an inner side plate 7. The rear inner corner post 6 is fixedly located on the right side of the enclosure structure, directly contacting the hinge mechanism. The rear inner corner post 6 is divided into three sections: an outer section that folds back at the hinge at the bottom; a connecting section that bends upwards and to the left on the right side; and a support section that bends between the vertical section of the connecting section and the horizontal section of the outer section. These three sections are integrally formed. The inner side plate 7 is positioned higher than the rear inner corner post 6. The inner side plate 7 has a Z-shaped folded section, and this inner folded section is fixedly installed on the vertical inner wall of the enclosure structure. The connecting end of the rear inner corner post 6 is fitted with a rear PVC profile 4. The rear PVC profile 4 has a downward hook-shaped locking section at its end, and a locking slot on its upper surface. The locking interface on the locking slot directly inserts into the connecting section of the rear inner corner post 6. The left end of the rear PVC profile 4 has a clamping opening that opens to the left, and the lower side of this end has an integrated hook structure. Both hook structures abut against the support section of the rear inner corner post 6. The rear inner lining plate 5 is inserted and fixed at the clamping opening. The rear inner lining plate 5 has a four-section folded structure, which is folded upward as a whole. The tail end of the rear inner lining plate 5 overlaps and is fixed above the left end of the inner side plate 7. The rear inner corner post 6, the rear PVC profile 4, the rear inner lining plate 5, and the inner side plate 7 form a complete area associated with the box structure.

[0021] An integral PVC door frame 1 is simultaneously snapped onto the edges of the inner and outer panels of the door structure. The lower surface of the PVC door frame 1 has three equally deep adhesive strip inlets. The rightmost inlet differs from the other two; this inlet is used to install the outer adhesive strip 8, while the other two inlets install the inner adhesive strip 9. The upper surface of the PVC door frame 1 has outward-opening clamping openings on both sides, which snap onto the inner and outer panels of the door structure. The upper end of the outer adhesive strip 8 is a snap-fit ​​section, and the right end of the outer adhesive strip 8 has a double-hook structure, meaning the right end of the outer adhesive strip 8 has upward and downward rotating hammer hook sections. These two hammer hook sections respectively hook and abut against the PVC door frame 1 and the rear inner corner post 6. The hanging portion of the left end of the outer adhesive strip 8 abuts against the connecting section of the rear inner corner post 6. The upper ends of the two inner adhesive strips 9 are snap-fit ​​sections, and the lower ends of the inner adhesive strips 9 have closed arc-shaped head structures with a through cavity in the center. The lower end of the inner rubber strip 9 abuts against the upper surface of the rear PVC profile 4. The all-PVC door frame 1 directly connects to the cabinet door structure.

[0022] There is an unavoidable gap between the two areas of the door structure and the body structure, which is sealed by three rubber strips. The one-piece high-strength all-PVC door frame effectively avoids the rusting defects of segmented door frames.

[0023] It should be noted that this specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A cryogenic enclosure door sealing structure, comprising an enclosure door structure and an enclosure body structure connected by hinges, characterized in that: The box door structure is fitted with an integral full PVC door frame (1). The full PVC door frame (1) has three rubber strip inlets of the same depth on the end face of the box structure. The side of the box structure is provided with staggered rear inner corner posts (6) and inner side panels (7) in order from the outside to the inside. The rear inner corner posts (6) are fitted with rear PVC profiles (4). The other end of the rear PVC profiles (4) is clamped with a rear inner lining plate (5). The other end of the rear inner lining plate (5) is attached and fixed to the inner side panel (7). The outermost adhesive strip inlet is fitted with an outer adhesive strip (8), which abuts against the outer end face of the full PVC door frame (1) and the outer end face of the rear inner corner post (6); the two innermost adhesive strip inlets are fitted with two inner adhesive strips (9), which abut against the rear PVC profile (4).

2. The cryogenic chamber door sealing structure according to claim 1, characterized in that: The outer end of the rear PVC profile (4) is provided with a locking section with a hook structure on the side opposite to the door structure. The inner end of the rear PVC profile (4) is provided with a locking section with a hook structure on the side opposite to the door structure. The locking interface on the locking section is inserted into one end of the rear inner lining plate (5). The mating groove on the locking section is fitted into the folded end of the rear inner corner post (6).

3. The cryogenic chamber door seal structure according to claim 1, characterized in that: The full PVC door frame (1) has clamping openings at both ends on the side away from the box structure, and the clamping openings are engaged with the box door structure.

4. The cryogenic chamber door sealing structure according to claim 1, characterized in that: The rear inner lining plate (5) has a multi-segment structure. The side of the rear inner lining plate (5) closest to the box structure is connected to the rear PVC profile (4), and the side of the rear inner lining plate (5) away from the box structure is connected to the inner side plate (7).

5. The cryogenic chamber door seal structure according to claim 1, characterized in that: The outer end of the outer rubber strip (8) has a double hook structure, and the outer end face of the outer rubber strip (8) is hooked and abuts against the full PVC door frame (1) and the rear inner corner post (6).

6. The cryogenic chamber door seal structure according to claim 1, characterized in that: The end of the inner rubber strip (9) is a fully enclosed arc head structure and abuts against the rear PVC profile (4).

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