Patent Application
20210199385
The present invention relates to a vapor chamber having sealing structure, and in particular to a vapor chamber having sealing structure that improves a seal structure and thus increase the air-tightness of the vapor chamber.
A vapor chamber is a heat transfer device that dispatches heat in three dimensions. The structure of the vapor chamber is generally formed by combining two opposing plates having a capillary wick together, forming a vacuum inside the chamber, and filling up with a working fluid, and a heat transfer device with a low boiling point is therefore manufactured. The vacuum within the chamber is created by a pump via a tube preset during the manufacturing. The tube allows the pump to draw air and the working fluid to be filled up, and the tube would be sealed in the final step to maintain the vacuum.
A Chinese utility model, published as CN202014433U, discloses a vapor chamber having a sealed inlet including a body, capillary wick, working fluid, and a tube via which a fluid is filled up and air is drawn. The body is formed by combining two opposing plates that define a chamber therein. The tube extending through the body has a channel in communication with the chamber. The upper plate is pressed and deformed in a spot where the tube is disposed inside so that the channel is sealed. In addition, an end edge of the tube is aligned with an side edge of the body. Therefore, no portion of the tube extends out and obstructs other mechanisms, the spot where the deformation occurs can be cut again by a shearing process, and so forth. However, the said vapor chamber still has a tube disposed between the body, such that the spot where the tube is disposed may cause a leakage even though the spot has been pressed and sealed. Furthermore, a leakage, decreasing the air-tightness of the vapor chamber, may also occur due to an unexpected external force.
Therefore, to deal with the drawbacks of the conventional vapor chamber is the priority for those having ordinary skill in the art.
Accordingly, for addressing the drawbacks of the prior arts, the main object of the present invention is to provide a vapor chamber having sealing structure that increase the air-tightness of the vapor chamber.
To achieve the above-mentioned object, the present invention is provided with a vapor chamber having sealing structure, comprising a body and a capillary wick. The body has a first plate and a second plate. The first and second plates are attached to each other, which collectively define a sealed chamber therein and form a lip side. The lip side has an inlet channel and a stamping seal. The inlet channel is connected to the sealed chamber at one end and is connected to the stamping seal at the other end. The stamping seal is formed in a non-I shape. The capillary wick is selectively disposed within the sealed chamber of the body. Therefore, the air-tightness of the vapor chamber is increased by the stamping seal.
The body 1 has a first plate 11 and a second plate 12 that, when attached to each other, collectively define a sealed chamber 13 therein and form a lip side 14. The lip side 14 surrounds the outer perimeter of the sealed chamber 13. The first plate 11 has a first surface 111 and a second surface 112, while the second plate 12 has a third surface 121 and a fourth surface 122. The first and second plates 11, 12 can be aluminum, copper, commercially pure titanium, aluminium alloy, copper alloy, ceramics, stainless steel, or any combination thereof.
The lip side 14 has a inlet channel 141 and a stamping seal 142. The inlet channel 141 is connected to the sealed chamber 13 at one end, and is connected to the stamping seal 142 at the other end. The stamping seal 142 is formed in a non-I shape, i.e., in a Ω shape, upside-down U shape, U shape, horseshoe shape, X shape, C shape, wave shape, or Union Jack shape. The height of the stamping seal 142 is lower than that of the lip side 14 of the first plate 11.
A groove 15 and the inlet channel 141 are defined by a structure that protrudes upwardly from the first surface 111 to the second surface 112 of the first plate 11. The second and fourth surfaces 112, 122 are disposed on the upper and lower sides of the body 1, respectively, in which the second surface 112 is defined as a condensation surface, while the fourth surface 122 is defined as a heat absorption surface. The groove 15 forms the sealed chamber 13 when the first and second plates 11, 12 are combined together.
The capillary wick 2 is selectively disposed within the sealed chamber 13 of the body 1, and in this embodiment is disposed on the first and third surfaces 111, 121 of the first and second plates 11, 12 inside the sealed chamber 13. The capillary wick 2 can be disposed on either the first surface 111 of the first plate 11 or the third surface 121 of the second plate 12, or both the first and third surfaces 111, 121 of the first and second plates 11, 12 (not shown).
Therefore, the stamping seal 142 can increase the air-tightness of the vapor chamber by preventing a vacuum and working fluid from leaking.
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The main object of the present invention is to provide a vapor chamber having sealing structure that is not provided with a pipe via which air is drawn and a fluid is filled up. So, the invention can deal with the drawback that the tube from conventional art may not be firmly sealed after being disposed so as not to prevent a vacuum leak. In addition, leakages in the direction of the inlet channel can be prevented, and a sealing range can be wider in other directions, which allows the multi directions of the lip side of the body to be sealed, preventing the vacuum leak.
