Patent Description:
In related arts, electronic products, such as mobile phones, are becoming thinner and lighter, leaving less and less assembly space for components. Therefore, vapor chamber, as an application hotspot of heat dissipation technology, is being applied to more types of mobile phones. According to existing technologies, the vapor chamber subjected to a heat treatment has greatly weakened material strength and lacks mechanical strength, thus being greatly limited in application. In addition, existing vapor chambers are all covered on electronic components in a traditional middle frame, and only have a heat dissipation function, thus being relatively simple in function.

<CIT> discloses a stainless steel vapor chamber. The stainless steel vapor chamber comprises a wick, an upper cover and a lower cover, wherein the upper cover and the lower cover are made of stainless steel, the upper cover and the lower cover are welded to form a closed cavity, the wick is arranged in the cavity, surfaces of the upper cover and the lower cover are passivated, and at least the inner wall of the cavity is completely passivated. Meanwhile, <CIT> provides a manufacturing method of the stainless steel vapor chamber according to the preamble of claim <NUM>.

While the above patent application may achieve its intended purposes, there is still a need for a new and improved a manufacturing method for vapor chamber, vapor chamber and middle frame vapor chamber.

The disclosure aims to solve at least one of the technical problems in the existing technology. Therefore, the invention provides a manufacturing method for a vapor chamber according to claim <NUM>, which has a good anti-aging performance, and has a heat dissipation effect and a high mechanical strength at the same time, so that the vapor chamber has a supporting effect when electronic components are mounted, thus being multi-functional.

The invention further provides a vapor chamber manufactured by the manufacturing method for a vapor chamber above.

The invention further provides a middle frame vapor chamber having the vapor chamber above.

The features of the manufacturing method for a vapor chamber, the vapor chamber and the middle frame vapor chamber according to embodiments of the present invention are set out in the appended set of claims.

The manufacturing method for a vapor chamber according to an embodiment of the invention has at least the following beneficial effects. The vapor chamber does not react with water by the surface heat treatment, so that an anti-aging performance of the vapor chamber is effectively improved. In addition, the manufacturing method for a vapor chamber in the disclosure enhances an overall mechanical strength of the vapor chamber by welding the reinforcing rib for the vapor chamber, so that the vapor chamber has a heat dissipation effect and a high mechanical strength at the same time. The vapor chamber can have a supporting effect when electronic components are mounted, thus being multi-functional. Therefore, the vapor chamber manufactured by the manufacturing method for a vapor chamber in the disclosure has a good anti-aging performance and a very good mechanical strength, and can have a supporting effect on electronic components, thus being multi-functional.

The middle frame vapor chamber according to an embodiment of the invention has at least the following beneficial effects. The vapor chamber and the middle frame are connected into a whole by welding the vapor chamber with the middle frame, which enhances a mechanical strength of the middle frame vapor chamber, thus reducing a thickness of the middle frame vapor chamber on the premise of achieving the same effect, and realizing large-area heat dissipation.

Additional aspects and advantages of the invention will be given in part in the following description, which will become apparent from the following description or be understood through practice of the disclosure.

The invention is further described hereinafter with reference to the drawings and the embodiments, wherein:.

Reference numerals:
<NUM> refers to vapor chamber, <NUM> refers to upper cover, <NUM> refers to reinforcing rib, <NUM> refers to liquid suction core, <NUM> refers to lower cover, <NUM> refers to welding point, <NUM> refers to middle frame, and <NUM> refers to opening.

Embodiments of the invention are described in detail hereinafter, examples of the embodiments are shown in the drawings, and the same or similar reference numerals throughout the drawings denote the same or similar elements or elements having the same or similar functions. The embodiments described hereinafter with reference to the drawings are exemplary, are only intended to explain the disclosure, and cannot be understood as limiting the disclosure.

In the description of the invention, it should be understood that, the description with reference to the orientation or position relationship, such as the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", and the like is based on the orientation or position relationship shown in the drawings, which is only used for convenience of the description of the disclosure and simplification of the description instead of indicating or implying that the indicated device or element must have a specific orientation, and be constructed and operated in a specific orientation, and thus should not be understood as a limitation to the disclosure.

In the description of the invention, the term "several" refers to being one or more, the term "multiple" refers to being two or more, and the terms "greater than", "less than", "more than" and the like are understood as not including the following number, while the terms "above", "below", "within" and the like are understood as including the following number. If there is the description of first and second, it is only for the purpose of distinguishing between technical features, and should not be understood as indicating or implying relative importance, implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

In the description of the invention, unless otherwise explicitly defined, the terms "setting", "mounting" and "connecting" should be understood in a broad sense, and those of ordinary skills in the art can reasonably determine the specific meanings of the above terms in the disclosure in combination with the specific contents of the technical solution.

In the description of the invention, the descriptions with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" refer to that the specific features, structures, materials, or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the disclosure. In the specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

A manufacturing method for a vapor chamber according to an embodiment of the invention is described hereinafter with reference to <FIG> and <FIG>.

As shown in <FIG> and <FIG>, the manufacturing method for a vapor chamber according to an embodiment of the disclosure includes:.

In related arts, a mobile phone is gradually becoming thinner and lighter, leaving less and less assembly space for electronic components. The vapor chamber <NUM>, as a technical solution for heat dissipation of the mobile phone, has been widely applied.

The vapor chamber <NUM> does not react with water by the surface heat treatment on the vapor chamber <NUM>, so that the anti-aging performance of the vapor chamber is effectively improved, and the reliability of the vapor chamber <NUM> is ensured. In addition, an overall mechanical strength of the vapor chamber <NUM> is enhanced by welding the reinforcing rib <NUM> for the vapor chamber <NUM>, so that the vapor chamber <NUM> has a heat dissipation effect and a high mechanical strength at the same time. The vapor chamber <NUM> can have a supporting effect when electronic components are mounted, thus being multi-functional. Therefore, the manufacturing method for a vapor chamber <NUM> in the disclosure has a good anti-aging performance and a very good mechanical strength. In addition to realizing heat dissipation of electronic components, the vapor chamber can also be used as a support for mounting electronic components, thus being multi-functional.

It can be understood that, as shown in <FIG>, preparing different raw materials for various parts of the vapor chamber <NUM>, and machining and molding the various parts according to predetermined shapes of the various parts by using corresponding raw materials, includes:.

Specifically, as shown in <FIG>, the vapor chamber <NUM> includes an upper cover <NUM>, a liquid suction core <NUM> and a lower cover <NUM>. The upper cover <NUM> and the lower cover <NUM> are both made of a stainless steel sheet, so that the vapor chamber <NUM> can have a better mechanical strength. Specifically, the liquid suction core <NUM> is a porous copper mesh.

Specifically, as shown in <FIG>, the predetermined shapes of the various parts include the following predetermined shapes: the upper cover <NUM> of the vapor chamber is in a rectangle shape, the liquid suction core <NUM> is in a rectangle shape with a plurality of through holes, the lower cover <NUM> is provided with a plurality of bumps matched with the through holes of the liquid suction core <NUM>, and the lower cover <NUM> is in a rectangle shape.

It can be understood that, as shown in <FIG>, the vapor chamber <NUM> further includes a working medium. The vapor chamber <NUM> assembled with the liquid injection pipe is injected with water, and the water is used as the working medium. Further, the vapor chamber <NUM> may also be injected with ethanol as the working medium.

It can be understood that, as shown in <FIG>, the vapor chamber <NUM> injected with water is vacuumized. In order to make the vapor chamber <NUM> injected with water have a better heat dissipation effect, the vapor chamber is usually vacuumized by vacuumizing equipment.

It can be understood that, as shown in <FIG>, performing a sealing treatment on the vacuumized vapor chamber <NUM>, includes:.

Further, the sealing treatment above is performed by a secondary degasser. The sealing treatment can effectively remove waste gas in the vapor chamber, and effectively seal the liquid injection pipe, thus improving the heat dissipation effect of the vapor chamber.

It can be understood that, as shown in <FIG>, welding the vapor chamber <NUM> subjected to the sealing treatment with a reinforcing rib <NUM>, includes:.

The welding of the reinforcing ribs <NUM> can effectively enhance the mechanical strength of the vapor chamber.

It can be understood that, as shown in <FIG>, assembling the machined and molded various parts of the vapor chamber <NUM>, and welding and sealing the assembled various parts of the vapor chamber <NUM>, includes:.

Specifically, the braze welding may be high temperature braze welding, the fusion welding may be laser welding, and the pressure welding may be diffusion welding. By adopting the above welding methods, a better welding effect and a good sealing effect can be achieved.

It can be understood that, as shown in <FIG>, performing a surface heat treatment on the vapor chamber <NUM> after welding and sealing, includes:
placing the vapor chamber <NUM> after welding and sealing in an oven, keeping a temperature of the oven between <NUM> and <NUM>, and baking the vapor chamber for <NUM> hour to <NUM> hours.

The surface heat treatment can make the vapor chamber <NUM> have a very good anti-aging performance.

It can be understood that, as shown in <FIG>, performing a passivating treatment on the vapor chamber <NUM> subjected to the surface heat treatment, includes:
placing the vapor chamber <NUM> subjected to the surface heat treatment in a hydrogen furnace, keeping a temperature of the hydrogen furnace between <NUM> and <NUM>, turning off the hydrogen furnace after heating for <NUM> hour to <NUM> hours, and cooling the vapor chamber <NUM> along with the hydrogen furnace to normal temperature.

The passivating treatment can make the vapor chamber <NUM> have a good anti-corrosion performance.

It can be understood that, as shown in <FIG>, assembling the vapor chamber <NUM> subjected to the passivating treatment with a liquid injection pipe, includes:.

Specifically, the annealing treatment is performed on the liquid injection pipe at an annealing temperature of <NUM> to <NUM>, and after heat preservation for <NUM> hour to <NUM> hours, the liquid injection pipe is cooled to room temperature along with the furnace, thus being simple to operate, and providing conditions for subsequent processes.

The vapor chamber <NUM> according to an embodiment of the disclosure is described hereinafter with reference to <FIG>.

As shown in <FIG>, the vapor chamber <NUM> according to an embodiment of the disclosure is manufactured by the manufacturing method for a vapor chamber <NUM> above.

After the process treatments above, the vapor chamber <NUM> has a good anti-aging performance, a certain anti-corrosion performance and a high mechanical strength, and can have a supporting effect on electronic components.

It can be understood that, as shown in <FIG> and <FIG>, a surface of one side of the upper cover <NUM> close to the liquid suction core <NUM> is provided with a plurality of reinforcing ribs <NUM>, the reinforcing ribs <NUM> abut against a surface of one side of the lower cover <NUM> close to the liquid suction core <NUM>, and the reinforcing ribs <NUM> are welded with the lower cover <NUM>.

The welding of the reinforcing ribs <NUM> effectively enhances the mechanical strength of the vapor chamber, so that the vapor chamber <NUM> can also be used as a support for mounting electronic components while having a heat dissipation effect, thus being multi-functional.

It can be understood that, as shown in <FIG> and <FIG>, a surface of one side of the lower cover <NUM> far away from the liquid suction core <NUM> is provided with a plurality of welding points <NUM>, a position of each of the welding points <NUM> faces directly one of the reinforcing ribs <NUM> inside the vapor chamber <NUM>, and the reinforcing ribs <NUM> are welded with the lower cover <NUM> through the welding points <NUM>.

Specifically, the reinforcing ribs <NUM> are welded by laser welding, with <NUM> welding points <NUM>, and connecting lines of the welding points <NUM> form a square, which is more conducive to uniform stress.

A middle frame vapor chamber according to an embodiment of the disclosure is described hereinafter with reference to <FIG> and <FIG>.

As shown in <FIG> and <FIG>, the middle frame vapor chamber according to an embodiment of the disclosure includes:.

The vapor chamber <NUM> and the middle frame <NUM> are connected into a whole by welding the vapor chamber <NUM> with the middle frame <NUM>, which enhances a mechanical strength of the middle frame <NUM> vapor chamber <NUM>, thus reducing a thickness of the middle frame <NUM> vapor chamber on the premise of achieving the same effect, and realizing large-area heat dissipation.

Specifically, the vapor chamber <NUM> and the middle frame <NUM> may be connected by laser welding, riveting or cementing.

Claim 1:
A manufacturing method for a vapor chamber, comprising:
preparing different raw materials for various parts of the vapor chamber (<NUM>), and machining and molding the various parts according to predetermined shapes of the various parts by using corresponding raw materials;
assembling the machined and molded various parts of the vapor chamber (<NUM>), and welding and sealing the assembled various parts of the vapor chamber (<NUM>);
performing a surface heat treatment on the vapor chamber (<NUM>) after welding and sealing;
performing a passivating treatment on the vapor chamber (<NUM>) subjected to the surface heat treatment;
assembling the vapor chamber (<NUM>) subjected to the passivating treatment with a liquid injection pipe;
injecting water into the vapor chamber (<NUM>) assembled with the liquid injection pipe;
vacuumizing the vapor chamber (<NUM>) injected with water;
performing a sealing treatment on the vacuumized vapor chamber (<NUM>); and
welding the vapor chamber (<NUM>) subjected to the sealing treatment with a reinforcing rib (<NUM>);
characterised in that performing a passivating treatment on the vapor chamber (<NUM>) subjected to the surface heat treatment, comprises:
placing the vapor chamber (<NUM>) subjected to the surface heat treatment in a hydrogen furnace, keeping a temperature of the hydrogen furnace between <NUM> and <NUM>, turning off the hydrogen furnace after heating for <NUM> hour to <NUM> hours, and cooling the vapor chamber (<NUM>) along with the hydrogen furnace to normal temperature.