The disclosure relates to a vapor chamber, more particularly to a vapor chamber structure.
Traditionally a vapor chamber is a vacuum chamber formed by an upper metal plate and a lower metal plate welded together. The inside of the vacuum chamber comprises highly efficient heat transfer components such as a capillary structure or a working fluid. This enables the vapor chamber to quickly transfer heat of a regional heat source to a large plate for cooling, thereby making the vapor chamber a heat dissipation device of high performance.
However, the heights and thicknesses of the heat sources are slightly different from each other. Thus, when the vapor chamber is in thermal contact with multiple heat sources, the higher or thicker heat sources are likely to be against the vapor chamber. This makes the vapor chamber unable to be in contact with lower or thinner heat sources; or, when the vapor chamber is in thermal contact with multiple heat sources, the higher or thicker heat sources are likely to depress the vapor chamber, thereby resulting in an uneven surface thereof. This problem leads to poor performance regarding the heat dissipation of the vapor chamber.
Consequently, the disclosure aims to provide an improved design capable of solving the aforementioned problems.
One purpose of the disclosure is to provide a vapor chamber structure in which a heating element provides the contact portion a thrust (namely a push force) when the contact portion is in contact with the heating element. The wrinkled ring portion is therefore forced to deform for helping the contact portion slightly adjust its position. This in turn ensures a tight and even contact between the contact portion and the heating element, thereby improving the heat dissipation efficiency of the vapor chamber structure.
To fulfill the purpose, the disclosure provides a vapor chamber structure which is configured for at least one heating element and comprises a main body having a heat receiving plate. The heat receiving plate has at least one wrinkled ring portion. An inner portion of the wrinkled ring portion surrounds a contact portion. The contact portion is in contact with the heating element.
The disclosure further provides the following effects:
Firstly, the main body has a condensing plate arranged in a way corresponding to the heat receiving plate. The condensing plate forms a plurality of stop sticks extending towards the heat receiving plate. Each stop stick and the contact portion abuts on each other to press the contact portion to contact the heating element more reliably, thereby improving the capability of heat dissipation of the vapor chamber structure.
Secondly, each return spring is accommodated in each stop stick and is sandwiched between the cooling fin and the stop stick. When the stop stick is pressed, the return spring gives the stop stick a return force to press each stop stick to abut on the contact portion. This ensures a more reliable contact between the contact portion and the heating element, thereby improving the heat dissipation function of the vapor chamber structure.
The disclosure will become more fully understood from the detailed description and the drawings given herein below for illustration only, and thus does not limit the disclosure, wherein:
In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.
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Specifically, the heat receiving plate 11 has a plurality of convex portions 13 protruding therefrom. Each wrinkled ring portion 12 is formed on the outer edge of each convex portion 13 while each contact portion 121 is formed on the top of each convex portion 13.
Moreover, the main body 1 has a condensing plate 14 arranged in a way corresponding to the heat receiving plate 11. The condensing plate 14 forms a plurality of stop sticks 141 extending towards each contact portion 121. A gap s is formed between each stop stick 141 and the contact portion 121. From the condensing plate 14, each stop stick 141 is formed by stamping in a direction towards the heat receiving plate 11. The inner portion of each stop stick 141 forms a concave 142 corresponding to the condensing plate 14.
Furthermore, the main body 1 comprises an upper case 15 and a lower case 16 assembled to each other. An accommodating chamber 17 is formed between the upper case 15 and the lower case 16. The heat receiving plate 11 is formed on the lower case 16 while the condensing plate 14 is formed on the upper case 15.
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Additionally, the main body 1 has the condensing plate 14 arranged in a way corresponding to the heat receiving plate 11. The condensing plate 14 forms the plurality of stop sticks 141 extending towards each contact portion 121. When the distance of the contraction of the contact portion 121 exceeds the gap s, the contact portion 121 abuts on each stop stick 141 to push the contact portion 121 for more reliable contact between the heating element 100 and the contact portion 121. This enhances the capability regarding heat dissipation of the vapor chamber structure 10.
Specifically, the outer edge of each stop stick 141 is disposed with a shrunken ring groove 1411 and each stop stick 141 abuts on the contact portion 121. Each return spring 4 is accommodated in each concave 142 and is sandwiched between the cooling fin 3 and the stop stick 141. When the stop stick 141 is pressed, the shrunken ring groove 1411 deforms, due to the press, to reduce the height of the stop stick 141. The return spring 4, at this point, gives the stop stick 141 a return force to enable the shrunken ring groove 1411 to adjust in relation to the return spring 4, for pressing each stop stick 141 to abut on the contact portion 121. This ensures the reliable contact between the contact portion 121 and the heating element 100, thereby improving the heat dissipation capability of the vapor chamber structure 10.
Specifically, the higher or thicker heating element 100 is in contact with the contact portion 121 while lower or thinner heating element 100 is in contact with the heat receiving plate 11. When the higher or thicker heating element 100 pushes the contact portion 121 to make it shrink, it does not affect the contact between the lower or thinner heating element 100 and the heat receiving plate 11. This way, the heating elements 100 with different thicknesses and heights may tightly and evenly contact the contact portion 121 or the heat receiving plate 11. Consequently, the third embodiment is capable of performing the same functions and yielding the same results as those of the first embodiment.
Specifically, the heat receiving plate 11 has one or multiple convex portions 13 and one or multiple block portions 131 protruding thereform. The heat receiving plate 11 has a convex section 111 protruding therefrom. The convex section 111 is disposed with one or multiple recessed ring grooves 112. The convex portion 13 is formed on the inside of the region surrounded by the recessed ring groove 112 while the block portion 131 is formed on the outside of the region surrounded by the recessed ring groove 112.
Thereby, a part of the heating element 100 is in contact with the contact portion 121 while the other part of the heating element 100 is in contact with the block portion 131. When the part of the heating element 100 presses the contact portion 121 to make it shrink, it does not affect the contact between the other part of the heating element 100 and the block portion 131. This way, the heating elements 100 with different thicknesses and heights may tightly and evenly contact the contact portion 121 and the block portion 131 respectively. Consequently, the fourth embodiment is capable of performing the same functions and yielding the same results as those of the first embodiment.
Specifically, the lower or thinner heating element 100 is in contact with the contact portion 121 while the higher or thicker heating element 100 is in contact with the heat receiving plate 11. When the higher or thicker heating element 100 is aligned to the heat receiving plate 11 for contact, the lower or thinner heating element 100 is able to press the contact portion 121 to make it shrink. This way, the heating elements 100 with different thicknesses and heights may tightly and evenly contact the contact portion 121 and the heat receiving plate 11 respectively. Consequently, the fifth embodiment is capable of performing the same functions and yielding the same results as those of the first embodiment.