A new heat-insulation box door structure

Abstract

The utility model relates to a novel heat insulation box door structure mainly applied to high and low temperature environment test box. The structure includes box door outer frame, glass frame, FR4 board, stainless steel frame, first rubber strip, second rubber strip and stainless steel backplate. The glass frame is installed on the box door outer frame, and the FR4 board is arranged between the two to cut off heat conduction; the stainless steel frame is installed on the aforementioned components through the first connecting piece; the stainless steel backplate is provided with a notch containing the first rubber strip in the center, and is provided with notches containing the second rubber strip around, and is installed through the second connecting piece, so that the rubber strip blocks the direct contact between the stainless steel frame and the backplate, thereby effectively reducing the thermal bridge effect. The utility model completely cancels the traditional heat tracing band, has the advantages of simple structure, good heat insulation effect, anti-condensation, low energy consumption and uniform and stable temperature field.

Description

Technical Field

[0001] This utility model relates to the field of environmental testing equipment technology, specifically to a novel heat-insulated door structure for a high and low temperature environmental test chamber. Background Technology

[0002] During operation, high and low temperature environmental test chambers often need to simulate extremely low temperatures (such as -40℃, -70℃ or even lower). As a critical component, the chamber door, its edges, and the frame of the observation window are mostly made of metal, which can easily form thermal bridges. This can lead to the leakage of cold air from inside the chamber, condensation of water vapor on the outside, and even freezing, which seriously affects the accuracy of the test and the service life of the equipment.

[0003] Traditional solutions involve wrapping heating tape around the edges of the enclosure door and the frame of the observation window to prevent condensation through continuous heating. However, heating tape has the following problems: First, it continuously consumes energy, increasing operating costs; second, the installation position is prone to deviation, leading to damage to the heating tape, which requires disassembling the enclosure door and re-foaming, a complex and time-consuming process; and third, the heating tape itself can interfere with the uniformity of the temperature field inside the enclosure.

[0004] Therefore, how to provide a new type of door structure that does not require a heat tracing cable, has better heat insulation effect, and lower energy consumption has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a novel thermal insulation box door structure that fundamentally blocks thermal bridges and eliminates the need for heat tracing tape by optimizing structural design and material matching, thereby achieving energy-saving, stable and reliable thermal insulation effects.

[0006] The specific plan is as follows: A novel heat-insulating cabinet door structure includes a door outer frame, a glass frame, an FR4 plate, a stainless steel frame, a first rubber strip, a second rubber strip, and a stainless steel back panel. The glass frame is mounted on the door outer frame to form an outer frame assembly. The FR4 plate is disposed between the glass frame and the door outer frame to block heat conduction. The stainless steel frame is mounted on the outer frame assembly via a first connector to form a stainless steel outer frame assembly. The stainless steel back panel has a central notch for accommodating the first rubber strip, which is installed within the central notch. The stainless steel back panel also has peripheral notches for accommodating the second rubber strip. The stainless steel back panel is mounted on the stainless steel outer frame assembly via a second connector, and the second rubber strip is installed within the peripheral notches. This design effectively blocks direct contact between the stainless steel frame and the stainless steel back panel, reducing thermal bridging.

[0007] Furthermore, the stainless steel frame is mounted on the outer frame assembly by rivets.

[0008] Furthermore, the stainless steel back panel is mounted on the stainless steel outer frame assembly using nylon studs.

[0009] Furthermore, this also includes polyurethane foam materials.

[0010] Furthermore, the polyurethane foam material is filled in the space formed by the outer frame of the door, the glass frame, the FR4 board, the stainless steel frame, and the stainless steel back panel.

[0011] Furthermore, the FR4 board is an epoxy board, which has excellent insulation and low thermal conductivity.

[0012] Furthermore, the first and second rubber strips are made of elastic rubber material for sealing and heat insulation.

[0013] Beneficial effects: This invention uses FR4 board to isolate the metal contact between the glass frame and the outer frame of the cabinet door, and uses rubber strips to block the direct heat conduction path between the stainless steel frame and the stainless steel back panel, fundamentally eliminating the main thermal bridge, thereby completely eliminating the need for heat tracing tape, avoiding the energy consumption, installation and maintenance problems it brings, and achieving energy conservation and emission reduction.

[0014] This invention can effectively prevent condensation and freezing, improve the operational reliability of equipment in low-temperature environments, and significantly enhance the temperature uniformity and stability inside the chamber, providing more precise conditions for environmental testing.

[0015] This utility model has a reliable structure, long service life, reduced maintenance needs and operating costs, and is suitable for mass production. Attached Figure Description

[0016] Figure 1 This is a planar structural diagram of the front of this utility model; Figure 2 This is a planar structural diagram of the reverse side of this utility model; Figure 3 This is a three-dimensional structural diagram of the present invention; Figure 4 This is an exploded view of the three-dimensional structure of this utility model.

[0017] Among them: 1-Outer frame of the door, 2-Glass frame, 3-FR4 plate, 4-Stainless steel frame, 5-First rubber strip, 6-Stainless steel back panel, 7-Second rubber strip. Detailed Implementation

[0018] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0020] This utility model provides a novel heat-insulating box door structure, including a box door outer frame 1, a glass frame 2, an FR4 plate 3, a stainless steel frame 4, a first rubber strip 5, a stainless steel back panel 6, and a second rubber strip 7. The glass frame 2 is installed on the box door outer frame 1 to form an outer frame assembly. The FR4 plate 3 is disposed between the glass frame 2 and the box door outer frame 1 to block heat conduction. The stainless steel frame 4 is installed on the outer frame assembly by a first connector (e.g., a rivet or other common means in the art) to form a stainless steel outer frame assembly. The stainless steel back panel 6 has a central notch for accommodating the first rubber strip 5, and the first rubber strip 5 is installed in the central notch. The stainless steel back panel 6 also has peripheral notches for accommodating the second rubber strip 7. The stainless steel back panel 6 is installed on the stainless steel outer frame assembly by a second connector (e.g., a nylon stud or other common means in the art). The second rubber strip 7 is installed in the peripheral notches, so that the first rubber strip 5 and the second rubber strip 7 respectively block the direct contact between the stainless steel frame 4 and the stainless steel back panel 6 to reduce the thermal bridging effect.

[0021] As a preferred embodiment of the present invention, the structure of the present invention further includes polyurethane foam material, which is filled in the space formed by the outer frame of the door, the glass frame, the FR4 board, the stainless steel frame and the stainless steel back panel.

[0022] To better achieve the technical effects of this utility model, in the specific production process, the FR4 board is made of epoxy board with excellent insulation and low thermal conductivity; the first rubber strip and the second rubber strip are made of elastic rubber material with both sealing and heat insulation functions.

[0023] The assembly process of this utility model is as follows: First, the glass frame 2 is installed and fixed onto the outer frame 1 of the door, forming a preliminary outer frame assembly. Next, an FR4 plate 3 is installed onto this outer frame assembly, positioned between the glass frame 2 and the outer frame 1, thereby utilizing the extremely low thermal conductivity of the FR4 material to block the heat conduction path between them. Then, using rivets as the first connecting element, a stainless steel frame 4 is installed onto this assembly, forming the stainless steel outer frame assembly.

[0024] Next, prepare the stainless steel back panel 6 and insert the first rubber strip 5 into the central notch (central notch). Then, using nylon studs as second connectors, install the back panel assembly onto the aforementioned stainless steel outer frame assembly. Next, insert the second rubber strip 7 into the notches around the stainless steel back panel 6 (peripheral notches) to ensure no direct metal-to-metal contact between the back panel and the stainless steel frame 4.

[0025] Finally, polyurethane foam is applied to the cavity formed by the outer frame 1, glass frame 2, FR4 board 3, stainless steel frame 4, and stainless steel back panel 6 to form a complete, highly insulating door structure.

[0026] This invention, through the aforementioned layered heat insulation design, establishes an effective heat insulation barrier between various metal components, successfully eliminating the need for a heat tracing cable and achieving excellent heat insulation performance and long-term operational stability.

[0027] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A novel heat-insulating box door structure, characterized in that, The enclosure includes a door frame, a glass frame, an FR4 board, a stainless steel frame, a first rubber strip, a second rubber strip, and a stainless steel back panel. The glass frame is mounted on the door frame to form an outer frame assembly. The FR4 board is disposed between the glass frame and the door frame to block heat conduction. The stainless steel frame is mounted on the outer frame assembly via a first connector to form a stainless steel outer frame assembly. The stainless steel back panel has a central notch for accommodating the first rubber strip, which is installed within the central notch. The stainless steel back panel also has peripheral notches for accommodating the second rubber strip. The stainless steel back panel is mounted on the stainless steel outer frame assembly via a second connector, and the second rubber strip is installed within the peripheral notches. This design effectively blocks direct contact between the stainless steel frame and the stainless steel back panel, reducing thermal bridging.

2. The novel heat-insulating box door structure according to claim 1, characterized in that, The stainless steel frame is mounted on the outer frame assembly by rivets.

3. The novel heat-insulating box door structure according to claim 1, characterized in that, The stainless steel back panel is mounted on the stainless steel outer frame assembly using nylon studs.

4. The novel heat-insulating box door structure according to any one of claims 1-3, characterized in that, It also includes polyurethane foam materials.

5. The novel heat-insulating box door structure according to claim 4, characterized in that, The polyurethane foam material is filled in the space formed by the outer frame of the door, the glass frame, the FR4 board, the stainless steel frame, and the stainless steel back panel.

6. The novel heat-insulating box door structure according to claim 1, characterized in that, The FR4 board is an epoxy board.

7. The novel heat-insulating box door structure according to claim 1, characterized in that, The first and second rubber strips are made of elastic rubber material and are used for sealing and heat insulation.

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