Getter for vacuum insulated panel

Abstract

The utility model provides a getter for a vacuum insulated panel, which relates to the technical field of getters, and comprises a shell, the interior of the shell is divided into different sections for accommodating a getter cavity and a drying agent cavity, and the side wall of the shell, which is positioned on the drying agent section, is provided with an open hole for communicating the getter with gas outside the shell; the opening is formed by stamping the side wall, deviating from the gap, of the shell in the radial direction. The blanking gap in the getter shell does not affect filling of suction powder and sealing of the opening end, the opening of the shell is used for communicating suction components with gas escaping into the vacuum insulation panel, the gas can be absorbed, the high vacuum degree and the low heat conductivity coefficient of the vacuum insulation panel can be maintained, the reserved opening does not need to be additionally provided with a four-claw nail for manual hole forming, and the working efficiency is greatly improved. Deviation caused when the four-claw nail is punched is avoided, and the flatness of the vacuum insulation panel is also prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of getter agents, in particular to a getter agent used for a vacuum insulation panel. Background Art

[0002] Vacuum insulation panel (VIP panel) is the abbreviation of Vacuum Insulation Panel in English. It is a kind of vacuum insulation material. It is filled with adsorbent to remove gas in the insulation panel, thereby improving the insulation performance. Adsorbent is usually a porous material with a large specific surface area. When the insulation panel is in a vacuum state, the adsorbent can adsorb gas molecules in the insulation panel, thereby reducing the heat conduction and convection of gas molecules and improving the insulation effect. This adsorption-release process can effectively reduce the transfer of heat and provide better insulation performance.

[0003] After searching, the patent document of "a composite room temperature getter for vacuum insulation panel" proposed by our company with announcement number CN218924262U adopts a long metal shell at one end to contain a mixture of barium-lithium alloy powder and metal powder, a first desiccant, a metal oxide and a second desiccant in sequence. The shell of the present application also has barium-lithium alloy powder and a desiccant built in. In order to make the gas in the vacuum insulation panel contact with the getter component sealed in the metal shell, the prior art needs to use four-claw nails to open holes on the surface of the metal shell, which will cause the following problems:

[0004] Use tape to fix the four-claw nail to the sealing end of the tubular getter. When in use, press down the four-claw nail to pierce the metal shell of the getter. The size of the opening and whether it completely penetrates the metal shell cannot be determined, and the direction of the force is prone to deviation, the direction of the tooth nail is prone to offset, and at the same time, the surface of the vacuum insulation board after vacuum packaging has traces of the four-claw nail, affecting the flatness, which causes troubles in the subsequent control of the getter performance indicators. Utility Model Content

[0005] In order to solve the above technical problems, the utility model utilizes the long strip opening of the shell to not affect the filling of the inhaled powder and the sealing of the opening end, and the punching and enlarging opening of the shell replaces the four-claw nail opening. The specific technical scheme is as follows:

[0006] A getter for a vacuum insulation panel comprises an outer shell, the interior of which is divided into different sections for accommodating a getter and a desiccant cavity, and an opening for connecting the getter with the gas outside the outer shell is provided on the side wall of the outer shell located in the desiccant section; the opening is formed by stamping the side wall of the outer shell in the radial direction and deviating from the gap.

[0007] Preferably, the stamping direction of the shell is perpendicular to the direction of gas flowing through the gaps of the shell.

[0008] Preferably, the shell comprises a material end for accommodating the getter and the desiccant therein and a sealing end which is open and can be sealed after being filled with the getter and the desiccant, and the opening is provided on the side wall of the material end.

[0009] Preferably, the opening is located at one end of the edge sealing end.

[0010] Preferably, the opening is rhombus-shaped or crescent-shaped.

[0011] It can be seen from the above technical solutions that the utility model has the following beneficial effects:

[0012] 1. The openings in the outer shell are used to connect the inhaled components with the gas that escapes into the vacuum insulation panel. The gas can be absorbed to maintain a high vacuum degree and a low thermal conductivity coefficient of the vacuum insulation panel. The reserved openings do not require additional four-claw nails to open the holes manually, so as to avoid deviations caused by the four-claw nails when opening the holes, and also avoid affecting the flatness of the vacuum insulation panel.

[0013] 2. The punching gap on the getter shell does not affect the filling of the getter powder and the sealing of the opening end. When the shell is sealed, there is some gas inside. During the process of flattening the getter, the volume of the sealed getter without punching gaps becomes smaller, the internal pressure becomes larger, and it is easy to break the seal; while the getter with reserved punching gaps can escape from the opening during the compression process, which will not affect the sealed end after punching, thereby improving the sealing of the seal.

[0014] 3. Use a punching machine to compress the gaps on both sides of the shell and expand the connecting pores, which helps the getter to work. The opening direction is on both sides of the column, which is not easy to puncture the barrier film and has a high overall flatness. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the square gap structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the diamond-shaped gap structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the crescent-shaped gap structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the diamond-shaped opening structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the crescent-shaped opening structure of the utility model.

[0020] In the figure: 10, shell; 101, material end; 102, edge sealing end; 20, opening. DETAILED DESCRIPTION

[0021] The following is a detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. Before describing in detail the technical solutions of each embodiment of the present invention, the nouns and terms involved are explained. In this specification, components with the same name or the same number represent similar or identical structures and are only for illustrative purposes.

[0022] like Figure 1-Figure 4 As shown, a getter for a vacuum insulation panel comprises a shell 10, the interior of which is divided into different sections for accommodating a getter and a desiccant cavity, and a side wall of the shell 10 located in the desiccant section is provided with an opening 20; after the side wall of the shell 10 in the radial direction and deviating from the gap is punched, the gap area is enlarged and the opening 20 is formed, and the getter is connected with the gas outside the shell 10 through the opening 20; before the opening 20 is formed, it is a gap, and the gap is in a long strip shape. If the gap of the shell 10 is punched, the gap will not form the opening 20, so the side wall of the shell 10 deviating from the gap is punched. One side of the gap is deformed under pressure, so that the gap gradually expands due to the deformation of the shell 10, and a final opening 20 is formed. The stamping direction of the shell 10 is perpendicular to the direction of gas flow through the gap of the shell 10, which can ensure a better effect of forming the opening 20. Before stamping, the gap can be punched out. The cross-section of the shell 10 is circular, and the interior of the shell 10 is divided into different getter and desiccant sections. For example, a mixture of barium-lithium alloy powder and metal powder, a first desiccant, a metal oxide and a second desiccant can be placed in the shell 10 in sequence.

[0023] Among them, the outer shell 10 is preferably open at one end and sealed at the other end. The outer shell 10 includes a material end 101 and a sealing end 102. The opening 20 is opened on the side wall of the material end 101, and the opening 20 is located at one end of the sealing end 102. In the initial state, the material end 101 is used for built-in getter and desiccant, and the sealing end 102 is open. The getter and desiccant are filled into the interior of the material end 101 through the sealing end 102 until the getter and desiccant are filled, and then the sealing end 102 is sealed.

[0024] Specifically, the sealing of the edge sealing end 102 can be achieved by welding, bonding or stamping, preferably by stamping. If some gas exists inside the shell 10 when the edge sealing end 102 is stamped and sealed, the gas may overflow from the gap during the process of flattening the getter, that is, the stamping and sealing of the edge sealing end 102 causes some gas inside the shell 10 to overflow from the opening 20, thereby reducing the impact of the gas inside the shell 10.

[0025] like Figure 1-Figure 4As shown, the gap is in the shape of an elongated strip, and the shape can be set in various ways, such as square, diamond or crescent. After the outer shell 10 is filled with the getter and the desiccant, the edge sealing end 102 is punched and sealed to achieve the sealing operation of the edge sealing end 102. Then, the outer shell 10 is punched as a whole until the opening 20 is gradually made larger due to the punching. The square or diamond gap forms a diamond opening 20 with a larger area, and the crescent-shaped gap forms a crescent-shaped opening 20 with a larger area. The opening 20 promotes the contact between the getter and the air. The opening 20 is preferably diamond or crescent-shaped. Such a design can effectively promote the better expansion effect of the outer shell 10 after punching.

[0026] More specifically, the openings 20 are symmetrically arranged about the shell 10. Before stamping, the gap of the shell 10 is less than 0.2 mm, the length is less than 2 mm, and the distance between two adjacent openings 20 is between 1.4 mm and 4 mm. Such an arrangement can effectively prevent the material filling from overflowing outward from the openings 20 when the shell 10 is stamped as a whole, reduce the amount of material falling from the openings 20, and the distance between the openings 20 is set to prevent the shell 10 from being uneven in shape after being pressed.

[0027] The above-described embodiments are merely descriptions of preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A getter for a vacuum insulation panel, characterized in that: include: A housing (10) whose interior is divided into different sections for accommodating a getter and a desiccant cavity, and an opening (20) capable of connecting the getter with the gas outside the housing (10) is provided on a side wall located at the desiccant section; The opening (20) is formed by punching a side wall of the housing (10) in a radial direction and away from the slit.

2. The getter for a vacuum insulation panel according to claim 1, characterized in that: The stamping direction of the shell (10) is arranged perpendicular to the direction in which gas flows through the gaps of the shell (10).

3. The getter for a vacuum insulation panel according to claim 1, characterized in that: The housing (10) comprises a material end (101) for accommodating a getter and a desiccant therein, and a sealing end (102) which is open and can be sealed after being filled with the getter and the desiccant, and the opening (20) is provided on a side wall of the material end (101).

4. The getter for a vacuum insulation panel according to claim 3, characterized in that: The edge sealing end (102) is sealed by punching.

5. The getter for a vacuum insulation panel according to claim 3, characterized in that: The sealed edge (102) is sealed by welding.

6. The getter for a vacuum insulation panel according to claim 3, characterized in that: The opening (20) is located at one end of the edge sealing end (102).

7. The getter for a vacuum insulation panel according to claim 1, characterized in that: The opening (20) is in a rhombus or crescent shape.

8. The getter for a vacuum insulation panel according to claim 1, characterized in that: The gap of the opening (20) is no larger than 0.2 mm.

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