Sintering device for capillary structure of copper pipe

Abstract

The invention discloses a sintering device for a capillary structure of a copper pipe. The sintering device comprises a device base, an outer shell, a heating device, a gas mixing device, a supporting bracket, a supporting clamp and a gas inlet and outlet device. The supporting bracket is arranged at the top of the device base, the supporting clamp is clamped on the supporting bracket, and the heating device and the gas mixing device are arranged in the device base. The gas inlet and outlet device comprises a gas inlet pipeline, a degassing mechanism and a gas outlet device body, the gas inlet end of the gas inlet pipeline is connected with the gas mixing device, the gas outlet end of the gas inlet pipeline penetrates through the supporting bracket and extends to the top of the supporting bracket, the gas outlet device body is arranged at the bottom of the supporting bracket and at the top of the device base, and the outer shell covers the supporting bracket. The degassing mechanism is arranged in the gas inlet pipeline, the degassing mechanism comprises a connecting shell, an oxidizable metal object and a reducing object, the connecting shell is detachably connected in the gas inlet pipeline, and oxygen in the input helium-hydrogen mixed gas is removed through cooperation of the oxidizable metal object and the reducing object.

Description

Technical Field

[0001] The present invention relates to the field of heat pipe processing, and particularly to a sintering device for the capillary structure of copper tubes. Background Art

[0002] With the increasing advancement of existing electronic products, the manufacturing process, the decreasing volume, and the increasing power. These factors together have led to an increasing heat generation of electronic products. Therefore, the volume of the heat dissipation structure needs to be small enough and the heat dissipation efficiency needs to be high enough. Nowadays, in order to improve the heat dissipation efficiency, a capillary structure with good heat conduction effect is often added to the heat pipe and the vapor chamber to improve the heat conduction efficiency, thereby improving the heat dissipation effect.

[0003] The capillary structure in the existing copper tube is mainly sintered from copper powder. Such a processing technology generally requires about 8 hours of processing time. During this processing, nitrogen is input as a protective gas to prevent copper oxidation. Also, even after exhausting, there will still be some oxygen present, and there will also be oxygen in the actually input nitrogen. Therefore, hydrogen is often mixed into the nitrogen, and a small amount of oxidized copper is reduced through a reduction reaction. That is to say, a nitrogen-hydrogen mixed gas is continuously input during this processing time.

[0004] However, even so, some capillary structures will still be oxidized, reducing the overall yield. To solve this problem, one way is to solve the problem at the source, that is, to purify the input hydrogen-oxygen mixed gas and consume the internal oxygen during the input process, thereby reducing the oxygen content in the hydrogen-oxygen mixed gas. Another way is to use other structures as consumables during the sintering process to replace the capillary structure to react with oxygen, so as to prevent the capillary structure from being oxidized as much as possible and improve the yield. Summary of the Invention

[0005] The main object of the present invention is to provide a sintering device for the capillary structure of copper tubes, which can effectively protect the capillary structure of copper tubes and improve the final processing yield by setting a degassing mechanism in the intake pipe to remove oxygen from the nitrogen-hydrogen mixed gas and setting a degassing fixture that can replace the copper powder in the copper tube to react with oxygen.

[0006] The present invention provides a sintering device for the capillary structure of copper tubes, including a device base, an outer housing, a heating device, a gas mixing device, a support bracket, a support fixture, and an air inlet and outlet device;

[0007] The support bracket is arranged on the top of the device base, the support fixture is clamped on the support bracket, and the heating device and the gas mixing device are arranged in the device base;

[0008] The air inlet and outlet device includes an air inlet pipe, a deaeration mechanism, and an air outlet device body. The air inlet end of the air inlet pipe is connected to the gas mixing device. The air outlet end of the air inlet pipe passes through the support bracket and extends to the top of the support bracket. The air outlet device body is arranged on the top of the device base at the bottom of the support bracket. The outer casing covers the outside of the support bracket.

[0009] The deaeration mechanism is arranged in the air inlet pipe. The deaeration mechanism includes a connection shell, an oxidizable metal, and a reducing agent arranged in the connection shell. The connection shell is detachably connected in the air inlet pipe. Through the cooperation of the oxidizable metal and the reducing agent, oxygen in the input helium-hydrogen mixed gas is removed.

[0010] The copper tube is arranged in the support fixture. When oxygen enters the support fixture, it will first react with the support fixture and then with the capillary structure in the copper tube, thereby reducing the probability of the capillary structure reacting with oxygen and improving the yield.

[0011] Preferably, the connection shell includes an upper connection shell and a lower connection shell. The bottom of the upper connection shell and the top of the lower connection shell are fixedly connected by a threaded connection.

[0012] The air inlet pipe includes an upper air inlet pipe and a lower air inlet pipe. The upper air inlet pipe is arranged on the top of the upper connection shell and is fixedly connected to the upper connection shell by a threaded connection. The lower connection shell is arranged on the top of the lower air inlet pipe and is fixedly connected by a threaded connection. The lower air inlet pipe is fixedly connected to the device base.

[0013] Preferably, the oxidizable metal is iron wire. The metal oxide is arranged in the lower connection shell, and the reducing agent is charcoal. The reducing agent is arranged in the upper connection shell.

[0014] Preferably, it further includes a first connection baffle, a second connection baffle, and a third connection baffle. The first connection baffle is snap-connected to the bottom inside the lower connection shell to support the oxidizable metal. The second connection baffle and the third connection baffle are respectively arranged at the bottom and top inside the upper connection shell to support and limit the reducing agent.

[0015] Preferably, the first connection baffle, the second connection baffle, and the third connection baffle are respectively provided with a first connection baffle ventilation hole, a second connection baffle ventilation hole, and a third connection baffle ventilation hole.

[0016] Preferably, the copper tube includes a copper tube body, a removable sintered rod, and copper powder disposed between the copper tube body and the sintered rod for sintering to form a capillary structure;

[0017] A support fixture inner cavity is provided on the inner side of the support fixture, the copper tube is disposed in the support fixture inner cavity, and the support fixture is made of copper;

[0018] The top of the support fixture is higher than the copper tube body, and a plurality of support fixture grooves are provided on the inner side surface of the support fixture inner cavity, and partition bumps are provided between the support fixture grooves;

[0019] By disposing the copper tube body in the support fixture inner cavity, when oxygen enters the support fixture, it will react with the support fixture first and then with the copper tube body or the copper powder, thereby reducing the probability of the copper powder reacting with oxygen and thus improving the yield.

[0020] Preferably, one side of the partition bump close to the middle of the support fixture inner cavity is a conical surface. By providing a partition bump with a conical surface, it is possible to prevent the copper tube from adhering to the support fixture during sintering, thereby facilitating the removal of the copper tube from the support fixture after sintering.

[0021] Preferably, the air outlet device body includes an annular air outlet seat and an air outlet pipe. The air outlet seat surrounds the air inlet pipe, and the bottom of the air outlet seat is connected to the air inlet end of the air outlet pipe. Air outlet seat air inlet holes are provided on the side surface of the air outlet seat.

[0022] Preferably, the support bracket includes a support rod, a bottom support seat, and a limit support seat. The bottom of the support rod is fixedly connected to the device base, and the bottom support seat and the limit support seat are fixedly connected to the support rod;

[0023] One bottom support seat and a plurality of limit support seats form a support group. The bottom support seat is disposed at the bottom of the limit support seat. Limit support holes are provided on the limit support seat, and the support fixture is disposed on the bottom support seat through the limit support holes.

[0024] The beneficial effects of the copper tube capillary structure sintering device of the present invention are as follows:

[0025] 1. By providing iron and charcoal in the connection housing, the oxygen in the nitrogen-hydrogen mixed gas can be removed, thereby reducing the oxygen content in the copper tube capillary structure sintering device and improving the yield.

[0026] 2. The upper connection housing and the lower connection housing are fixedly connected by a threaded connection method, which can facilitate the replacement of the oxidizable metal and the reducing agent in the upper connection housing and the lower connection housing, and is convenient for installation, setting, and maintenance.

[0027] 3. The connecting housing is arranged in the intake pipe by means of threaded connection, which facilitates the installation and disassembly of the connecting housing.

[0028] 4. By providing a support fixture and arranging a partition bump in the support fixture, the probability of the reaction between oxygen and the support fixture can be increased, which will reduce the probability of the reaction between the copper powder in the copper pipe body and oxygen, thereby improving the final yield.

[0029] 5. By arranging a conical surface on one side of the partition bump close to the middle of the inner cavity of the support fixture, the adhesion between the copper pipe and the support fixture during sintering can be prevented, which facilitates the removal of the copper pipe from the support fixture after sintering. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural view of the copper pipe capillary structure sintering device of the present invention;

[0031] Figure 2 is a top view of the copper pipe capillary structure sintering device of the present invention;

[0032] Figure 3 is a cross-sectional view of the air inlet and outlet device of the copper pipe capillary structure sintering device of the present invention;

[0033] Figure 4 is a cross-sectional view of the degassing mechanism of the copper pipe capillary structure sintering device of the present invention;

[0034] Figure 5 is a schematic structural view of the support fixture of the copper pipe capillary structure sintering device of the present invention;

[0035] Figure 6 is a cross-sectional view of the support fixture of the copper pipe capillary structure sintering device of the present invention;

[0036] Reference numerals in the drawings: 1, device base; 2, outer housing; 3, support bracket; 4, air inlet and outlet device; 5, support fixture; 6, copper pipe; 31, support rod; 32, bottom support seat; 33, limit support seat; 34, U-shaped groove; 41, intake pipe; 42, air outlet seat; 43, degassing mechanism; 44, air outlet pipe; 51, support fixture groove; 52, partition bump; 53, inner cavity of support fixture; 61, copper pipe body; 62, sintering rod; 63, copper powder; 331, limit support hole; 411, upper intake pipe; 412, lower intake pipe; 421, air inlet hole of air outlet seat; 431, upper connecting housing; 432, lower connecting housing; 433, reduction product; 434, oxidizable metal; 435, first connecting baffle; 436, second connecting baffle; 437, third connecting baffle.

[0037] The realization, functional features, and advantages of the object of the present invention will be further described in conjunction with embodiments with reference to the accompanying drawings. Specific Embodiments

[0038] It should be understood that the specific embodiments described herein are merely used to explain the present invention and are not used to limit the present invention.

[0039] Refer to Figures 1 to 6 , and an embodiment of the copper tube capillary structure sintering device of the present invention is proposed:

[0040] A copper tube capillary structure sintering device includes a device base 1, an outer housing 2, a heating device, a gas mixing device, a support bracket 3, a support fixture 5, and an air inlet and outlet device 4.

[0041] The support bracket 3 includes a support rod 31, a bottom support base 32, and a limit support base 33. The bottom of the support rod 31 is fixedly connected to the device base 1, and the bottom support base 32 and the limit support base 33 are fixedly connected to the support rod 31. One bottom support base 32 and two limit support bases 33 form a support group. The bottom support base 32 is arranged at the bottom of the limit support base 33. A limit support hole 331 is arranged on the limit support base 33. The support fixture 5 passes through the limit support holes 331 of the two limit support bases 33 and is arranged on the bottom support base 32. The copper tube 6 is limited by the limit support base 33, and the support fixture 5 is supported by the bottom support base 32. The outer housing 2 is sleeved outside the support bracket 3, and the inside and outside of the copper tube capillary structure sintering device are enclosed by the outer housing 2.

[0042] The air inlet and outlet device 4 includes an air inlet pipe 41, a degassing mechanism 43, and an air outlet device body. The air inlet end of the air inlet pipe 41 is connected to the gas mixing device. U-shaped grooves 34 are arranged on the front sides of the bottom support base 32 and the limit support base 33. The air outlet end of the air inlet pipe 41 passes through the support bracket 3 through the U-shaped groove 34 and extends to the top of the support bracket 3.

[0043] The degassing mechanism 43 includes a connection housing, an oxidizable metal object 434, a reducing agent 433, a first connection baffle 435, a second connection baffle 436, and a third connection baffle 437 arranged in the connection housing. The connection housing includes an upper connection housing 431 and a lower connection housing 432, and the bottom of the upper connection housing 431 and the top of the lower connection housing 432 are fixedly connected by a threaded connection method.

[0044] The intake pipe 41 includes an upper intake pipe 411 and a lower intake pipe 412. The upper intake pipe 411 is fixedly connected to the top of the upper connection housing 431 by means of threaded connection. The lower connection housing 432 is fixedly connected to the top of the lower intake pipe 412 by means of threaded connection. The lower intake pipe 412 is fixedly connected to the device base 1. The first connection baffle 435 is snap - connected to the inner bottom of the lower connection housing 432, and the oxidizable metal object 434, which is an iron wire, is supported by the first connection baffle 435. The second connection baffle 436 and the third connection baffle 437 are respectively arranged at the bottom and top of the inner side of the upper connection housing 431, and the reducing agent 433, which is charcoal, is supported and limited by the second connection baffle 436 and the third connection baffle 437. The first connection baffle 435, the second connection baffle 436 and the third connection baffle 437 are respectively provided with a first connection baffle ventilation hole, a second connection baffle ventilation hole and a third connection baffle ventilation hole.

[0045] The air outlet device body includes an annular air outlet seat 42 and an air outlet pipe 44. The air outlet seat 42 is arranged around the intake pipe 41, and the bottom of the air outlet seat 42 is connected to the intake end of the air outlet pipe 44. An air outlet seat intake hole 421 is provided on the side of the air outlet seat 42.

[0046] The copper tube 6 includes a copper tube body 61, a removable sintering rod 62 and copper powder 63 arranged between the copper tube body 61 and the sintering rod 62 for sintering to form a capillary structure. A support fixture inner cavity 53 is provided on the inner side of the support fixture 5. The copper tube 6 is arranged in the support fixture inner cavity 53, and the support fixture 5 is made of copper. The top of the support fixture 5 is higher than the copper tube body 61. A plurality of support fixture grooves 51 are provided on the inner side surface of the support fixture inner cavity 53. A partition bump 52 is arranged between the support fixture grooves 51. One side of the partition bump 52 close to the middle of the support fixture inner cavity 53 is a conical surface. By providing the partition bump 52 with a conical surface, it is possible to prevent the copper tube 6 from adhering to the support fixture 5 during sintering, so that it is convenient to take out the copper tube 6 from the support fixture 5 after sintering.

[0047] During use, first evacuate. At this time, the nitrogen in the nitrogen tank and the hydrogen in the hydrogen tank are mixed in a certain proportion by the gas mixing device, and the mixed helium - hydrogen gas is input into the outer housing 2 through the intake pipe 41, and the air in the outer housing 2 is discharged through the air outlet device body. During the sintering process, the helium - hydrogen mixed gas will also be continuously and slowly input. Whether during the evacuation process or the subsequent slow input process, the input gas will pass through the degassing mechanism 43. The oxygen in the helium - hydrogen mixed gas is removed by the degassing mechanism 43, thereby reducing the oxygen content in the copper tube capillary structure sintering device and improving the yield.

[0048] After the evacuation is completed, if oxygen enters the support fixture 5, the oxygen will first react with the inner side of the support fixture 5. And since there are multiple partition bumps 52 provided on the inner side of the support fixture 5, which can increase the contact surface on the inner side of the support fixture 5, the probability of the reaction between the oxygen and the support fixture 5 can be increased. This will reduce the probability of the reaction between the copper powder 63 in the copper tube body 61 and the oxygen, thereby increasing the final yield rate.

[0049] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A sintering device for the capillary structure of a copper tube, characterized in that it includes a device base, an outer shell, a heating device, a gas mixing device, a support bracket, a support fixture, and an air inlet and outlet device; The support bracket is arranged on the top of the device base, the support fixture is clamped on the support bracket, and the heating device and the gas mixing device are arranged in the device base; The air inlet and outlet device includes an air inlet pipe, a degassing mechanism, and an air outlet device body. The air inlet end of the air inlet pipe is connected to the gas mixing device, the air outlet end of the air inlet pipe passes through the support bracket and extends to the top of the support bracket, and the air outlet device body is arranged on the top of the device base at the bottom of the support bracket. The outer shell covers the outside of the support bracket; The degassing mechanism is arranged in the air inlet pipe. The degassing mechanism includes a connection shell and an oxidizable metal and a reducing substance arranged in the connection shell. The connection shell is detachably connected in the air inlet pipe. Through the cooperation of the oxidizable metal and the reducing substance, oxygen in the input helium-hydrogen mixed gas is removed; The copper tube is arranged in the support fixture. When oxygen enters the support fixture, it will first react with the support fixture and then with the capillary structure in the copper tube, so as to reduce the probability of the capillary structure reacting with oxygen and thus improve the yield.

2. The sintering device for the capillary structure of a copper tube according to claim 1, characterized in that The connection shell includes an upper connection shell and a lower connection shell, and the bottom of the upper connection shell and the top of the lower connection shell are fixedly connected by a threaded connection; The air inlet pipe includes an upper air inlet pipe and a lower air inlet pipe. The upper air inlet pipe is arranged on the top of the upper connection shell and is fixedly connected to the upper connection shell by a threaded connection. The lower connection shell is arranged on the top of the lower air inlet pipe and is fixedly connected by a threaded connection. The lower air inlet pipe is fixedly connected to the device base.

3. The copper tube capillary structure sintering device according to claim 2, characterized in that, The oxidizable metal is iron wire, the metal oxide is arranged in the lower connection shell, the reducing substance is charcoal, and the reducing substance is arranged in the upper connection shell.

4. The copper tube capillary structure sintering device according to claim 3, characterized in that, It also includes a first connection baffle, a second connection baffle, and a third connection baffle. The first connection baffle is clamped on the inner bottom of the lower connection shell to support the oxidizable metal through the first connection baffle. The second connection baffle and the third connection baffle are respectively arranged at the bottom and top of the inner side of the upper connection shell to support and limit the reducing substance through the second connection baffle and the third connection baffle.

5. The copper tube capillary structure sintering device according to claim 4, characterized in that, The first connection baffle, the second connection baffle, and the third connection baffle are respectively provided with a first connection baffle ventilation hole, a second connection baffle ventilation hole, and a third connection baffle ventilation hole.

6. The sintering device for the capillary structure of a copper tube according to claim 1, characterized in that The copper tube includes a copper tube body, a removable sintering rod, and copper powder arranged between the copper tube body and the sintering rod for sintering to form a capillary structure; There is a support fixture inner cavity provided on the inner side of the support fixture. The copper tube is arranged in the support fixture inner cavity, and the support fixture is made of copper; The top of the support fixture is higher than the copper tube body. A plurality of support fixture grooves are arranged on the inner side surface of the support fixture inner cavity, and partition bumps are arranged between the support fixture grooves; By arranging the copper tube body in the support fixture inner cavity, when oxygen enters the support fixture, it will first react with the support fixture and then react with the copper tube body or the copper powder, thereby reducing the probability of the copper powder reacting with oxygen and improving the yield.

7. The copper tube capillary structure sintering device according to claim 1, characterized in that, One side of the partition bump close to the middle of the support fixture inner cavity is a conical surface. By arranging the partition bump with a conical surface, it can prevent the copper tube from adhering to the support fixture during sintering, thereby facilitating the removal of the copper tube from the support fixture after sintering.

8. The copper tube capillary structure sintering device according to claim 1, wherein The air outlet device body includes an annular air outlet seat and an air outlet pipe. The air outlet seat surrounds the air inlet pipe, and the bottom of the air outlet seat is connected to the air inlet end of the air outlet pipe. Air outlet seat air inlet holes are arranged on the side surface of the air outlet seat.

9. The copper tube capillary structure sintering device according to claim 1, wherein The support bracket includes a support rod, a bottom support seat, and a limit support seat. The bottom of the support rod is fixedly connected to the device base, and the bottom support seat and the limit support seat are fixedly connected to the support rod; One bottom support seat and a plurality of limit support seats form a support group. The bottom support seat is arranged at the bottom of the limit support seat. Limit support holes are arranged on the limit support seat, and the support fixture is arranged on the bottom support seat through the limit support holes.

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