A pulsating heat pipe plate type notebook computer radiator

Abstract

The application discloses a pulsation uniform heating plate type plate-pen notebook computer radiator, which comprises a bottom plate, a pulsation channel is arranged on the bottom plate, a cover plate is arranged on the pulsation channel, the pulsation channel is a closed air channel structure, refrigerant is arranged in the pulsation channel, and the pulsation channel is a negative pressure structure. When the device is implemented, the pulsation channel is filled with refrigerant. Because the pulsation channel is small enough, the air bubble column and the liquid column are arranged in an interval and in a random distribution state. In a high-temperature area, the refrigerant absorbs heat to generate air bubbles, which expand and increase pressure rapidly, push the refrigerant after heat absorption to flow to a low-temperature area, and the air bubbles in the low-temperature area are cooled, shrink and break, and the pressure decreases. Because there is a pressure difference between the two ends and a pressure imbalance between adjacent pulsation channels, the refrigerant oscillates between the high-temperature area and the low-temperature area, so that heat transfer is realized. In the whole process, external mechanical work and electric work are not consumed, and self-oscillation under thermal driving is realized.

Description

Technical Field

[0001] This invention belongs to the field of laptop cooling technology, specifically a pulsed heat dissipation plate laptop cooling system. Background Technology

[0002] Since its inception, the cooling methods of laptops have evolved from fanless cooling to single-fan cooling, to fan plus heatsink, and then to fan plus vapor chamber (copper VC) heatsink. Cooling technology has gradually evolved along with the improvement of chip performance.

[0003] Based on performance and portability, laptops can be categorized into business laptops and gaming laptops; based on thickness and weight, they can be divided into ultra-thin laptops and standard laptops. Regardless of the classification method, from a heat dissipation perspective, we can categorize them into fanless laptops and fan-cooled laptops (also known as passive cooling and active cooling). Currently, ultra-thin laptops mostly use fanless cooling (low power consumption) or a fan plus an ultra-thin heatsink / copper VC cooling system (high power consumption); standard laptops (high-end business laptops, gaming laptops) mostly use a fan + standard heatsink / copper VC cooling system (high power consumption). With the further increase in chip power consumption, fan-plus-heatsink coolers are gradually becoming insufficient for cooling requirements, especially for gaming laptops, where power consumption has reached 180-240W. Copper VC coolers are currently one of the preferred cooling methods for high-performance laptops.

[0004] While copper heat exchangers (VCs) offer good heat dissipation, two factors limit their large-scale application: the heat transfer limit and manufacturing cost. Regarding the heat transfer limit, in conventional large-size two-phase heat exchange components driven by capillary force, the heat transfer capacity is constrained by the capillary pressure difference. This capillary pressure difference is related to the internal capillary structure and the refrigerant; once the capillary structure and refrigerant are determined, the capillary heat transfer limit is fixed. The heat transfer limit of conventional copper VCs ranges from 35W to 230W (varying depending on thickness). For laptops with higher heat dissipation requirements (AI laptops), the use of copper VCs is significantly limited.

[0005] The manufacturing process of copper VC is complex, involving as many as 25 steps or more from blank cutting to finished product shipment. At the same time, the number and cost of processing tooling involved in each step are high, resulting in a high price for VC, which limits its use in consumer laptops. Summary of the Invention

[0006] To address the problems mentioned in the background section, the present invention provides the following technical solution: a pulsed heat dissipation plate-type laptop cooler, comprising a base plate, wherein a pulsed channel is provided on the base plate, and a cover plate is provided on the pulsed channel. The pulsed channel is a closed air duct structure, and a refrigerant is provided inside the pulsed channel, which is also a negative pressure structure. Heat dissipation fins are provided on both sides of the back of the base plate. Two heat dissipation fins form a low-temperature zone, and a high-temperature zone is formed between the two heat dissipation fins. After being heated in the high-temperature zone, the refrigerant can flow towards the low-temperature zone.

[0007] Preferably, the refrigerant exists in the form of intermittent water columns within the pulsating channel.

[0008] Preferably, a fan mounting port is also provided on the base plate, and a cooling fan is installed in the fan mounting port and electrically connected to the laptop.

[0009] Preferably, an upper fixing block is provided inside the fan mounting port, the cooling fan has a rotating shaft, the rotating shaft is inserted into the fixing block and can rotate inside the fixing block, and the fixing block is fixed to the base plate by a support frame.

[0010] Preferably, an end block is fixed to the end of the rotating shaft, and a slot is provided on the end block. One end of the rod is inserted into the slot, and the other end extends out of the end block. A toggle block is fixed to the other end of the rod. A first spring is provided between the rod and the end block. When the rotating shaft rotates, the rod is subjected to centrifugal force and can slide in the direction of extending out of the end block. An insertion hole is provided in the support frame, and the insertion rod is inserted into the insertion hole. A first gear set and a second gear set are provided in the fixed block. The first gear set and the second gear set are respectively located on both sides of the insertion rod. The toggle block can actuate the first gear set and the second gear set so that the first gear set and the second gear set push the insertion rod to one side.

[0011] Preferably, there are multiple actuating blocks, which are arranged in a circular array on the side of the rotating shaft. The actuating blocks can simultaneously contact and drive with the first gear set and the second gear set, and the next actuating block can contact the second gear set / first gear set before the previous actuating block is completely separated from the first gear set / second gear set.

[0012] Preferably, the lower end of the support frame is evenly provided with inclined grooves, and a brush is provided outside the insertion rod. The brush can pass through the inclined groove and extend downward. When the shaft is stopped and / or rotating at low speed, the brush can contact the upper surface of the fan blades of the cooling fan. When the shaft is rotating at high speed, the insertion rod is pushed to one side, causing the brush to separate from the fan blades.

[0013] Preferably, one end of the socket is open, a second spring is provided on one end of the plug rod, and a plug is installed on the end of the second spring away from the plug rod, with the plug and the socket being interference-fitted.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] When refrigerant is filled into a pulsating channel, because the pulsating channel is small enough, bubbles and liquid columns will be formed in a randomly distributed state. In the high-temperature zone, the refrigerant absorbs heat and generates bubbles, which expand rapidly and increase in pressure, pushing the refrigerant after absorbing heat to flow to the low-temperature zone. In the low-temperature zone, the bubbles cool, contract and burst, and the pressure drops. Due to the pressure difference between the two ends and the pressure imbalance between adjacent pulsating channels, the refrigerant oscillates and flows between the high-temperature zone and the low-temperature zone, thereby achieving heat transfer. In the whole process, no external mechanical work or electrical work is required, and it is entirely a self-oscillation driven by heat.

[0016] When this device is implemented, it can also clean the surface of the fan blades, preventing a large amount of dust from accumulating on the surface of the fan blades after long-term use. Moreover, the cleaning method does not require manual intervention, making it convenient for users. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the back structure of the base plate of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the fan mounting port of the present invention;

[0021] Figure 4 This is a top view of the internal structure of the fixing block and support frame of the present invention;

[0022] Figure 5 This is a top view of the internal structure of the support frame of the present invention;

[0023] Figure 6 This is a schematic diagram of one side of the insertion rod of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the present invention when it has multiple pulsating channels;

[0025] In the diagram: 1. Base plate; 2. Cover plate; 3. Pulsating channel; 4. Fan mounting port; 5. Heat dissipation fins; 6. Cooling fan; 7. Shaft; 8. Fixing block; 9. Support frame; 10. End block; 11. Rod; 12. Actuating block; 13. First gear set; 14. Second gear set; 15. Inclined groove; 16. Brush; 17. Second spring; 18. First spring; 19. Block; 20. Insert rod. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] Depend on Figure 1-7 This invention discloses a pulsed vapor chamber heat sink for laptops, comprising a base plate 1, on which a pulsed channel 3 is provided, and a cover plate 2 is provided on the pulsed channel 3. The pulsed channel 3 is a closed air passage structure, and refrigerant is provided inside the pulsed channel 3. The pulsed channel 3 is a negative pressure structure. Heat dissipation fins 5 are provided on both sides of the back of the base plate 1. Two heat dissipation fins 5 form a low temperature zone at their respective positions, and a high temperature zone is formed between the two heat dissipation fins 5. After being heated in the high temperature zone, the refrigerant can flow towards the low temperature zone.

[0028] When the computer is in use, the heat generated is conducted to the cover plate 2. The refrigerant inside the cover plate 2 absorbs heat and undergoes a phase change, changing from a liquid to a gaseous state. The unheated refrigerant remains liquid. Under the action of pressure difference, the gas-liquid two-phase working fluid is driven to flow from the high-temperature zone of the pulsating channel 3 to the low-temperature zone, where it condenses and releases heat. The heat is conducted from the low-temperature zone of the pulsating channel 3 to the heat dissipation fins 5, and finally transferred to the atmospheric environment through convective heat exchange between the heat dissipation fins 5 and the air.

[0029] The pulsating channel 3 can be single-layered or multi-layered. The single-layered or multi-layered pulsating channel 3 is fabricated using micromachining. The interface of the pulsating channel 3 is generally square or rectangular, and the distribution of the pulsating channels 3 is a serpentine, closed-loop or topologically closed-loop structure. The single-layered or multi-layered pulsating channels 3 are welded to the cover plate 2 using vacuum brazing or diffusion welding to form a sealed cavity. After welding, the sealed cavity is evacuated (or under negative pressure), refrigerant is injected, and the cavity is sealed to complete the fabrication of the pulsating heat spreader. The refrigerant types include R134a, R245fa, R1234yf, R1233zd, and R1233ze, etc. This patent uses, but is not limited to, the above-mentioned refrigerant types.

[0030] Refrigerant is filled into the pulsating channel 3. Due to the sufficiently small size of the channel, columns of bubbles and liquid will be randomly distributed and interspersed within it. In the high-temperature zone, the refrigerant absorbs heat, generating bubbles that rapidly expand and increase in pressure, propelling the refrigerant towards the low-temperature zone. In the low-temperature zone, the bubbles cool, contract, and burst, causing a pressure drop. Due to the pressure difference between the two ends and the pressure imbalance between adjacent pulsating channels 3, the refrigerant oscillates and flows between the high-temperature and low-temperature zones, thus achieving heat transfer. Throughout this process, no external mechanical or electrical work is required; it is entirely a self-oscillation driven by heat.

[0031] The refrigerant exists in the form of intermittent water columns within the pulsating channel 3.

[0032] A fan mounting port 4 is also provided on the base plate 1. A cooling fan 6 is installed in the fan mounting port 4. The cooling fan 6 is electrically connected to the laptop and is powered through a USB port.

[0033] An upper fixing block 8 is provided inside the fan mounting port 4. The cooling fan 6 has a rotating shaft 7 and fan blades. The rotating shaft 7 is inserted into the fixing block 8 and can rotate within the fixing block 8. The fixing block 8 is fixed to the base plate 1 by a support frame 9. When the cooling fan 6 is in use, the use of the fixing block 8 can easily fix the cooling fan 6, and the use of the support frame 9 can fix the position of the fixing block 8.

[0034] An end block 10 is fixed to the end of the rotating shaft 7. A slot is provided on the end block 10. One end of the rod 11 is inserted into the slot, and the other end extends out of the end block 10. A toggle block 12 is fixed to the other end of the rod 11. A first spring 18 is provided between the rod 11 and the end block 10. When the rotating shaft 7 rotates, the rod 11 is subjected to centrifugal force and can slide in the direction of extending out of the end block 10. An insertion hole is provided in the support frame 9, and the insertion rod 20 is inserted into the insertion hole. A first gear set 13 and a second gear set 14 are provided in the fixing block 8. The first gear set 13 and the second gear set 14 are located on both sides of the insertion rod 20. The toggle block 12 can actuate the first gear set 13 and the second gear set 14 so that the first gear set 13 and the second gear set 14 push the insertion rod 20 to one side.

[0035] When the rotating shaft 7 rotates, the rod 11 and the actuating block 12 mounted on it will be subjected to centrifugal force, which will cause the rod 11 to extend outward. When the rotating shaft 7 rotates to a certain speed (after the rotation stabilizes), the actuating block 12 can contact and mesh with the first gear set 13 and the second gear set 14 respectively, thereby causing the first gear set 13 and the second gear set 14 to rotate. The first gear set 13 and the second gear set 14 can then actuate the insertion rod 20, thereby causing the insertion rod 20 to slide outward.

[0036] The actuating blocks 12 are multiple and are arranged in a circular array on the side of the rotating shaft 7. The actuating blocks 12 can simultaneously contact and drive the first gear set 13 and the second gear set 14. Before the previous actuating block 12 is completely separated from the first gear set 13 / second gear set 14, the next actuating block 12 can contact the second gear set 14 / first gear set 13, thereby ensuring that the insertion rod 20 will not move back and forth during the rotation of the rotating shaft 7.

[0037] The lower end of the support frame 9 is evenly provided with inclined slots 15, and a brush 16 is provided outside the insertion rod 20. The brush 16 can pass through the inclined slots 15 and extend downward. When the rotating shaft 7 is in a stopped state and / or rotating at a low speed (initial rotation), the brush 16 can contact the upper surface of the fan blades of the cooling fan 6. When the rotating shaft 7 is rotating at a high speed, the insertion rod 20 is pushed to one side, causing the brush 16 to separate from the fan blades.

[0038] In some embodiments, when the shaft 7 just starts to rotate, the lower end face of the brush 16 can contact the surface of the fan blade, thereby cleaning the surface of the fan blade. When the shaft 7 rotates to a certain speed, the brush 16 is blocked by the side wall of the inclined groove 15 and bends, thereby separating the brush 16 from the surface of the fan blade, preventing the high-speed rotating fan blade from cutting the brush 16, and ensuring that the brush 16 can be used stably for a long time.

[0039] One end of the socket is open, and a second spring 17 is provided on one end of the plug rod 20. A plug 19 is installed on the end of the second spring 17 away from the plug rod 20. The plug 19 is interference-fitted with the socket to facilitate the user to disassemble and assemble the plug rod 20.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pulsating heat plate type plate-pen notebook cooler, comprising a bottom plate (1), characterized in that: The bottom plate (1) is provided with a pulsation channel (3), the pulsation channel (3) is provided with a cover plate (2), the pulsation channel (3) is a closed air channel structure, the pulsation channel (3) is provided with refrigerant, and the pulsation channel (3) is a negative pressure structure, the bottom plate (1) is provided with a heat dissipation fin (5) near the two sides on the back, the two heat dissipation fins (5) form a low temperature area, the two heat dissipation fins (5) form a high temperature area, and the refrigerant can flow to the low temperature area after being heated in the high temperature area; The bottom plate (1) is provided with a fan mounting hole (4), and a heat dissipation fan (6) is mounted in the fan mounting hole (4), and the heat dissipation fan (6) is electrically connected with the notebook computer. An upper fixing block (8) is arranged in the fan mounting hole (4), the heat dissipation fan (6) has a rotating shaft (7), the rotating shaft (7) is inserted into the fixing block (8) and can rotate in the fixing block (8), and the fixing block (8) is fixed to the bottom plate (1) through a support frame (9). An end block (10) is fixed to the end of the rotating shaft (7), a slot is formed in the end block (10), one end of a rod body (11) is inserted into the slot, the other end of the rod body (11) extends out of the end block (10), a pushing block (12) is fixed to the other end of the rod body (11), a first spring (18) is arranged between the rod body (11) and the end block (10), when the rotating shaft (7) rotates, the rod body (11) can slide to the direction of extending out of the end block (10) under the action of centrifugal force, a insertion hole is formed in the support frame (9), a insertion rod (20) is inserted into the insertion hole, a first gear set (13) and a second gear set (14) are arranged in the fixing block (8), the first gear set (13) and the second gear set (14) are located on the two sides of the insertion rod (20), the pushing block (12) can push the first gear set (13) and the second gear set (14) to push the insertion rod (20) to one side; The lower end of the support frame (9) is uniformly provided with an inclined slot (15), a brush (16) is arranged outside the insertion rod (20), the brush (16) can extend downward through the inclined slot (15), when the rotating shaft (7) is in a stopped state and / or rotates at a low speed, the brush (16) can contact the upper surface of the fan blade of the heat dissipation fan (6), and when the rotating shaft (7) rotates at a high speed, the insertion rod (20) is pushed to one side, so that the brush (16) is separated from the fan blade. One end of the insertion hole is an open structure, a second spring (17) is arranged on one end of the insertion rod (20), a plug block (19) is mounted on the end of the second spring (17) away from the insertion rod (20), and the plug block (19) is in interference fit with the insertion hole.

2. A pulsating heat plate type notebook computer radiator according to claim 1, characterized in that: The refrigerant exists in the pulsation channel (3) in the form of intermittent water column.

3. A pulsating heat plate type notebook computer radiator according to claim 1, characterized in that: The plurality of the toggle blocks (12) are arranged in a ring array on the side of the rotating shaft (7), and the toggle blocks (12) can simultaneously contact and drive the first gear set (13) and the second gear set (14), and before the previous toggle block (12) is completely separated from the first gear set (13) / the second gear set (14), the next toggle block (12) can contact the second gear set (14) / the first gear set (13).

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