Vacuum screen device

Abstract

The utility model relates to vacuum screen equipment field discloses vacuum screen equipment, including vacuum screen one, vacuum screen two and heat conduction block, the inside of vacuum screen one is provided with vacuum screen two, the inside of vacuum screen two is provided with heat conduction block, the outer wall of vacuum screen one is equipped with electric heating interface, the outer wall of vacuum screen one is equipped with vacuum interface, the top of vacuum screen one is fixedly connected with upper layer sealing ring, the top of upper layer sealing ring is fixedly connected with upper layer sealing cover, the top of upper layer sealing cover is fixedly connected with sensor interface. In the utility model, work is in the environment of ultralow temperature constant temperature, and electric heating block is in the inside and can control temperature faster, and the controllable temperature range is wider, and the low temperature can be 5K, has the effect of reducing equipment volume simultaneously, improves equipment operability, reaches the effect that the energy consumption is saved.

Description

Technical Field

[0001] This utility model relates to the field of cryogenic instruments and vacuum shield equipment, and in particular to cryogenic testing instruments and equipment. Background Technology

[0002] With the development of biopharmaceuticals, pharmaceuticals, and new energy batteries, the testing of key performance indicators for these products necessitates the rapid development of instruments and equipment, which require ultra-low temperature testing environments. Currently, testing instruments all use liquid nitrogen as a coolant, which, while providing rapid cooling, is difficult to control and poses safety risks. Furthermore, frequent inspections and the replenishment of liquid nitrogen are cumbersome. As ultra-low temperature technology advances, liquid nitrogen is increasingly being replaced, but solutions are needed to address insulation issues, reduce heat loss, minimize equipment size, and simplify operation. To address these challenges, a vacuum shield was invented using the principle of vacuum insulation.

[0003] Existing vacuum shielding devices typically consist of a vacuum chamber, a shielding structural layer, and sealing components. The vacuum chamber is the core insulation component; it removes internal air through a vacuuming process, significantly reducing heat transfer due to the extremely low thermal conductivity of a vacuum environment. The shielding structural layer is generally composed of multiple layers of glass or thin metal sheets, supporting the shape of the vacuum chamber and ensuring its strength. Some structural layers also feature a low-emissivity coating to further reduce heat exchange caused by thermal radiation. The sealing components surround the edge of the vacuum chamber, using sealing strips or welding techniques to keep the vacuum chamber airtight, preventing external air from seeping in and compromising the vacuum insulation effect. When vacuum shielding devices are applied to doors, windows, and household appliances, external heat is prevented from passing through the shielding via conduction or convection due to the vacuum chamber's barrier, thus achieving thermal insulation or cold preservation functions.

[0004] Current technology utilizes liquid nitrogen for refrigeration, achieving a cooling temperature of approximately -190℃, but the temperature control range is limited. When the heater is placed in an externally controlled environment, heat is introduced through heat conduction, but the amount of heat entering is also limited. After the liquid nitrogen is consumed for refrigeration, it needs to be added again for reuse, resulting in a large consumption of liquid nitrogen and high costs. Furthermore, if the operation of liquid nitrogen is inconvenient, it is prone to leakage, leading to waste and environmental pollution. Therefore, a vacuum shield device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a vacuum screen device, which aims to improve the problems of limited temperature control range, limited heat entry, high cost, and easy environmental pollution in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A vacuum screen device includes a vacuum screen one, a vacuum screen two, and a heat conduction block, wherein the vacuum screen one is provided with the vacuum screen two, and the vacuum screen two is provided with the heat conduction block. An electric heating interface is provided on the outer wall of the vacuum screen, and a vacuum interface is provided on the outer wall of the vacuum screen. An upper sealing ring is fixedly connected to the top of the vacuum screen, and an upper sealing cover is fixedly connected to the top of the upper sealing ring. A sensor interface is fixedly connected to the top of the upper sealing cover.

[0007] As a further description of the above technical solution: The top of the upper sealing cover is fixedly connected to an upper sealing cap, and an inner sealing frame is provided inside the upper sealing cap.

[0008] As a further description of the above technical solution: The upper sealing cap is provided with an inner sealing ring one, and the upper sealing cap is provided with an inner sealing ring two.

[0009] As a further description of the above technical solution: The upper sealing cap contains a test workpiece, and the bottom of the vacuum screen is fixedly connected to a vacuum screen bracket.

[0010] As a further description of the above technical solution: The vacuum screen has an ultra-low temperature cold source interface at its bottom.

[0011] As a further description of the above technical solution: A lower sealing ring is fixedly connected to the bottom of the vacuum screen, and a lower sealing component is fixedly connected to the bottom of the vacuum screen.

[0012] This utility model has the following beneficial effects: 1. In this utility model, the device operates in an ultra-low temperature constant temperature environment. The electric heating block is located inside, which can control the temperature more quickly and has a wider controllable temperature range, with the lowest temperature reaching 5K. At the same time, it can reduce the size of the equipment, improve the operability of the equipment, and achieve the effect of saving energy. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the vacuum screen device proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the heat conduction block of the vacuum screen device proposed in this utility model; Figure 3 This is a schematic diagram of the structure of the inner sealing ring of the vacuum screen device proposed in this utility model.

[0014] Legend: 1. Vacuum screen one; 2. Heating interface; 3. Sensor interface; 4. Detected workpiece; 5. Upper sealing cap; 6. Vacuum interface; 7. Upper sealing cover; 8. Upper sealing ring; 9. Inner sealing ring one; 10. Inner sealing ring two; 11. Inner sealing frame; 12. Heat conduction block; 13. Lower sealing ring; 14. Lower sealing element; 15. Ultra-low temperature cold source interface; 16. Vacuum screen bracket; 17. Vacuum screen two. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Reference Figures 1-3 The present invention provides an embodiment of a vacuum screen device, including a vacuum screen 1, which serves as one of the main structures of the core vacuum cavity, constructing a basic space for vacuum insulation and providing an initial vacuum barrier for the interior; a vacuum screen 2 17; and a heat conduction block 12. The vacuum screen 2 17 is disposed inside the vacuum screen 1, and the heat conduction block 12 is disposed inside the vacuum screen 2 17. The heat conduction block 12 includes components such as constant temperature heating and sensors. The outer wall of the vacuum screen 1 is provided with an electric heating interface 2, which is connected to an external electric heating device to provide a channel for heat input into the equipment. The outer wall of the vacuum screen 1 is provided with a vacuum interface 6, which can efficiently extract air from the cavity and quickly form the required vacuum environment, laying the foundation for subsequent heat insulation and temperature control operations and improving the efficiency of vacuum preparation. The top of the vacuum screen 1 is fixedly connected with an upper sealing ring 8, and the top of the upper sealing ring 8 is fixedly connected with an upper sealing cover 7. The upper sealing cover 7 and the upper sealing ring 8 can fill the gap between the upper sealing cover 7 and other components to achieve flexible sealing. The top of the upper sealing cover 7 is fixedly connected with a sensor interface 3. Reference Figures 1-3The upper sealing cap 7 is fixedly connected to the top of the upper sealing cap 5. The upper sealing cap 5 has an inner sealing frame 11, an inner sealing ring 9, and an inner sealing ring 10 inside. The upper sealing cap 5 also has a test workpiece 4 inside. The bottom of the vacuum screen 17 is fixedly connected to the vacuum screen bracket 16. The vacuum screen bracket 16 can improve the mechanical strength and deformation resistance of the equipment, prevent component displacement and vacuum cavity deformation, and extend the service life of the equipment. The bottom of the vacuum screen 11 has an ultra-low temperature cold source interface 15. The ultra-low temperature cold source interface 15 can meet the requirements of ultra-low temperature working conditions, expand the temperature application range of the equipment, and cope with a wider range of process scenarios. The bottom of the vacuum screen 11 is fixedly connected to the lower sealing ring 13 and the lower sealing element 14.

[0017] Working principle: When using this vacuum screen device, the vacuum interface 6 connects to an external vacuum pumping device, which extracts the air from the cavity formed by the sealing components, including vacuum screen 1, vacuum screen 2, upper sealing cap 5, upper sealing cover 7, upper sealing ring 8, inner sealing ring 1 9, inner sealing ring 2 10, lower sealing ring 13, and lower sealing element 14, creating a vacuum environment inside the cavity. When temperature-related operations need to be performed on the workpiece 4, a heating element can be connected through the heating interface 2 to provide heat to the system, or an ultra-low temperature cold source can be introduced through the ultra-low temperature cold source interface 15 to supplement the system with cooling. The heat or cold will be transferred to the workpiece 4 through the heat conduction block 12. At the same time, the sensor connected to the sensor interface 3 can monitor the temperature, pressure, and other parameters inside the cavity in real time. In conjunction with the vacuum environment and sealing structure, the temperature conditions of the workpiece 4 can be precisely controlled to meet the requirements of heat insulation and temperature control.

[0018] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vacuum screen device, comprising a vacuum screen one (1), a vacuum screen two (17), and a heat conduction block (12), characterized in that: Vacuum screen one (1) is provided with vacuum screen two (17) inside, and heat conduction block (12) is provided inside vacuum screen two (17). The outer wall of the vacuum screen (1) is provided with an electric heating interface (2), the outer wall of the vacuum screen (1) is provided with a vacuum interface (6), the top of the vacuum screen (1) is fixedly connected with an upper sealing ring (8), the top of the upper sealing ring (8) is fixedly connected with an upper sealing cover (7), and the top of the upper sealing cover (7) is fixedly connected with a sensor interface (3).

2. The vacuum screen apparatus according to claim 1, characterized in that: The upper sealing cap (7) is fixedly connected to the top of the upper sealing cap (5), and the upper sealing cap (5) is provided with an inner sealing frame (11).

3. The vacuum screen apparatus according to claim 2, characterized in that: The upper sealing cap (5) is provided with an inner sealing ring one (9) and the upper sealing cap (5) is provided with an inner sealing ring two (10).

4. The vacuum screen apparatus according to claim 2, characterized in that: The upper sealing cap (5) is equipped with a test workpiece (4), and the bottom of the vacuum screen (17) is fixedly connected to a vacuum screen bracket (16).

5. The vacuum screen apparatus according to claim 1, characterized in that: The vacuum screen (1) has an ultra-low temperature cold source interface (15) at its bottom.

6. The vacuum screen apparatus according to claim 1, characterized in that: The bottom of the vacuum screen (1) is fixedly connected to a lower sealing ring (13), and the bottom of the vacuum screen (1) is fixedly connected to a lower sealing element (14).

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