Efficient radiator capable of being inversely installed
By incorporating heat dissipation capillary structures and temperature equalization capillary structures into the radiator, the problem of the cooling medium circulation being affected by gravity when the radiator is inverted is solved, achieving efficient heat exchange and heat dissipation.
Patent Information
- Application Number
- CN202520121788.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-17
AI Technical Summary
When existing radiators need to be installed upside down, they are greatly affected by gravity, making it difficult to achieve efficient heat exchange cycles, especially limiting the phase change and reflux process of the cooling medium.
The system employs heat dissipation capillary structures and heat homogenization capillary structures within the heat spreader and fins, including a gate-shaped main microtube and obliquely connected oblique microtubes, combined with a Tesla check valve, to ensure directional flow of the cooling fluid and efficient thermosiphon circulation.
In the inverted configuration, efficient circulation and heat exchange of the cooling medium are achieved, overcoming the influence of natural gravity on the heat dissipation process and improving heat dissipation efficiency.
Smart Images
Figure CN223826851U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a heat sink technical field especially relates to a high -efficient heat sink of upside -down. BACKGROUND
[0002] The existing heat sink that utilizes the heat siphon principle and cooling working medium phase change principle to radiate heat, its main component includes the uniform temperature board, the heat dissipation fin and the heat pipe, and the uniform temperature board and the heat dissipation fin are provided with the passageway for the phase change circulation of cooling working medium, the uniform temperature board stores cooling working medium, and the uniform temperature board directly contacts the heat source, and the heat dissipation fin utilizes the heat siphon effect to make the cooling working medium of secondary phase change circulation backflow to the uniform temperature board, thereby completing heat exchange circulation radiating heat. This heat sink has the following defects:
[0003] 1) the heat dissipation fin that completes the heat siphon effect needs to preset the circulation passageway of certain fall of cooling working medium, and let the liquid cooling after phase change backflow to the uniform temperature board under the natural gravity, therefore, this structure is greatly influenced by gravity, and the volume is also larger, and the limitation is obvious. For example, when the heat sink needs upside -down to meet the actual production demand, the heat siphon assembly is difficult to utilize the natural gravity to drive the cooling working medium after phase change to backflow to the uniform temperature board, leading to difficult to complete heat exchange.
[0004] 2) when the heat sink needs upside -down, the cooling working medium in the liquid storage cavity of the uniform temperature board is also greatly influenced by the natural gravity, because the cooling working medium will flow down to the circulation passageway of the heat dissipation fin under the natural gravity, and it is difficult to complete the first phase change from liquid to gas efficiently, and it is difficult to complete the heat exchange radiating process efficiently. UTILITY MODEL CONTENTS
[0005] In view of the deficiencies of the prior art, the utility model provides a high -efficient heat sink of upside -down to overcome the deficiencies in the prior art.
[0006] To achieve the above object, the utility model is realized by the following technical schemes:
[0007] A high -efficient heat sink of upside -down, including the uniform temperature board and a plurality of fins that are vertically erected on the uniform substrate and are side by side and spaced apart.
[0008] The uniform temperature board includes a substrate and a cover plate covering the substrate, the top surface of the substrate is provided with a liquid storage groove, the side wall of the liquid storage groove is provided with a liquid injection port, and the cover plate is provided with clamping grooves that are side by side and spaced apart.
[0009] The fin has several heat dissipation capillary structures spaced apart inside. Each heat dissipation capillary structure includes a gate-shaped main microtube and several oblique microtubes connected obliquely between the main microtubes. A first Tesla one-way valve is provided at the top of the main microtube, and a second Tesla one-way valve is provided on the oblique microtubes. The second Tesla one-way valve is arranged in the opposite direction to the first Tesla one-way valve.
[0010] The bottom of the main microtube is connected to the liquid storage tank on the substrate through a through hole corresponding to the slot in the cover plate.
[0011] Furthermore, the liquid storage tank of the substrate is filled with a uniform temperature capillary structure, which is at least one of a multilayer copper mesh layer or a multilayer sintered copper powder layer.
[0012] Furthermore, the invertible high-efficiency radiator of this invention also includes an external condenser connected to the fins.
[0013] Preferably, the fins are further provided with horizontal fins spaced apart and arranged side by side.
[0014] Preferably, a heat pipe groove is formed on the back of the heat spreader, and a heat pipe is installed in the heat pipe groove.
[0015] Preferably, there are two liquid storage tanks arranged side by side on the substrate; there are four heat dissipation capillary structures in the fins, and the four heat dissipation capillary structures are grouped in pairs, with the two heat dissipation capillary structures in the first group corresponding to the first liquid storage tank, and the two heat dissipation capillary structures in the second group corresponding to the second liquid storage tank.
[0016] Preferably, the cover plate is connected and sealed to the substrate by welding.
[0017] Preferably, the fins and the cover plate are connected and sealed by welding after being embedded in the slots on the cover plate.
[0018] Preferably, the diameter of both the main microtube and the oblique microtube in the fin is less than 2 mm.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0020] 1) The present invention provides a high-efficiency radiator that can be inverted, wherein heat dissipation capillary structures are arranged at intervals inside the fins. Each heat dissipation capillary structure includes a gate-shaped main microtube and an oblique microtube connected between the main microtubes. A first Tesla one-way valve is provided at the top of the main microtube, and a second Tesla one-way valve is provided on the oblique microtube. The heat dissipation capillary structure makes the cooling working fluid in the circulation pipe less affected by natural gravity, ensuring that the cooling working fluid in the circulation pipe at the end of the heat dissipation fins can flow in a direction and complete a highly efficient thermosiphon heat exchange process.
[0021] 2) In this case, a high-efficiency heat sink that can be flipped is provided with a temperature-equalizing capillary structure in the liquid storage tank of the heat exchange plate. The temperature-equalizing capillary structure is a multi-layer copper mesh layer or a multi-layer sintered copper powder layer. The temperature-equalizing capillary structure makes the cooling working fluid in the liquid storage tank less affected by natural gravity, ensuring that the heat exchange plate end can efficiently concentrate heat and efficiently exchange heat with the fins, thereby further achieving efficient heat dissipation.
[0022] To provide a clearer understanding of this invention, the preferred embodiments of this invention will be described below in conjunction with the accompanying drawings. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 This is an exploded view of the utility model;
[0025] Figure 3 yes Figure 1 Sectional view along the middle AA direction;
[0026] Figure 4 yes Figure 3 Enlarged view of point B in the middle;
[0027] Figure 5 This is a structural schematic diagram of Embodiment 2 of the present invention;
[0028] Figure 6 This is a structural schematic diagram of Embodiment 3 of this utility model.
[0029] Attached image labels:
[0030] 1-Heat spreader, 2-Fins, 3-Horizontal fins, 4-Heat pipe groove; 11-Base plate, 12-Cover plate, 111-Liquid reservoir, 112-Injection port, 121-Card slot; 21-Heat dissipation capillary structure, 211-Main microtube, 212-Inclined microtube, 213-First Tesla check valve, 214-Second Tesla check valve. Detailed Implementation
[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0032] Furthermore, if terms such as "first" or "second" are used for descriptive purposes only, they are mainly used to distinguish different devices, components or parts (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, components or parts, and should not be construed as indicating or implying relative importance.
[0033] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0034] Example 1
[0035] Please also refer to Figures 1-4 This utility model provides an invertible high-efficiency heat sink, including a heat spreader plate 1 and several fins 2 that are arranged side by side at intervals on the heat spreader plate.
[0036] A heat spreader 1 includes a substrate 11 and a cover plate 12 covering the substrate 11. A liquid storage tank 111 is provided on the top surface of the substrate 11 for storing a cooling medium, and an injection port 112 is provided on the side wall of the liquid storage tank 111 for injecting the cooling medium. The cover plate 12 has slots 121 spaced apart side-by-side for embedding and securing the fins 2. In this embodiment, the cover plate 12 is connected and sealed to the substrate 11 by welding; the fins 2 are embedded in the slots 121 on the cover plate 12 and then connected and sealed by welding.
[0037] The fin 2 has several heat dissipation capillary structures 21 arranged laterally inside it. Each heat dissipation capillary structure 21 includes a gate-shaped main microtube 211 and several oblique microtubes 212 connected obliquely between the main microtubes 211. A first Tesla one-way valve 213 is provided at the top of the main microtube 211, and a second Tesla one-way valve 214 is provided on the oblique microtubes 212. The second Tesla one-way valve 214 is arranged in the opposite direction to the first Tesla one-way valve 213. Since the oblique microtubes 212 are obliquely connected between the main microtubes 211, coupled with the one-way flow effect of the Tesla one-way valve, the cooling working fluid on the left and right sides of the heat dissipation capillary structure 21 can flow in a direction, thus having a natural height difference that can cause a siphon effect.
[0038] Furthermore, the bottom of the main microtube 211 is connected to the liquid storage tank 111 on the substrate 11 through a through hole 122 corresponding to the slot 121 of the cover plate 12, thus forming a medium channel inside the heat sink where the medium can circulate in a directional manner. This also allows the cooling medium in the liquid storage tank 111 to absorb heat and evaporate, flowing into the heat dissipation capillary structure 21 on the fins 2. In actual manufacturing, after injecting the cooling medium into the liquid storage tank 111 of the substrate 11, the entire medium channel needs to be evacuated before the injection port 112 is sealed by welding.
[0039] Furthermore, the present invention provides a flip-mountable high-efficiency radiator, which also includes an external condenser (not shown) connected to the fins 2. Under the action of the external condenser, the cooling medium that evaporates to the top of the main microtube 211 of the heat dissipation capillary structure 21 will undergo a phase change, causing the cooling medium to change from a gaseous state to a liquid state and flow back to the liquid storage tank 111 of the substrate 11 through the first Tesla one-way valve 213, thereby forming a heat dissipation phase change cycle.
[0040] Preferably, in this embodiment, two liquid storage tanks 111 are arranged side by side on the substrate 11; four heat dissipation capillary structures 21 are arranged in the fin 2. The four heat dissipation capillary structures 21 are grouped in pairs, and the two heat dissipation capillary structures 21 in the first group correspond to the first liquid storage tank 111, and the two heat dissipation capillary structures 21 in the second group correspond to the second liquid storage tank 111. This allows the cooling medium in one liquid storage tank 111 to evaporate into the corresponding two heat dissipation capillary structures 21, so that the heat dissipation effect of the fin 2 reaches the optimal state.
[0041] Preferably, the liquid storage tank 111 of the substrate 11 is filled with a uniform temperature capillary structure (not shown in the figure), which is at least one of a multilayer copper mesh layer or a multilayer sintered copper powder layer. The uniform temperature capillary structure allows the cooling medium to adhere to the copper mesh layer or the sintered copper powder layer and has the effect of capillary force, thereby effectively overcoming the influence of natural gravity on the cooling medium and effectively achieving the effect of gravity resistance and efficient uniform temperature heat accumulation of the liquid medium.
[0042] Preferably, in this embodiment, the diameters of the main microtube 211 and the inclined microtube 212 in the fin 2 are both less than 2 mm, ensuring that the cooling working fluid flowing through the main microtube 211 and the inclined microtube 212 generates capillary force, effectively overcoming the influence of natural gravity.
[0043] Working principle:
[0044] 1. The surface of the heat spreader 1 is in direct contact with the heat source. The heat from the heat source is transferred to the cooling medium in the liquid storage tank 111. The cooling medium undergoes its first phase change, changing from liquid to gas and evaporating into the heat dissipation capillary structure 21 of the fins 2.
[0045] 2. The continuously circulating gaseous working fluid in the heat dissipation capillary structure 21 flows continuously to the first side of the heat dissipation capillary structure 21 through the inclined microtube 212 and the second Tesla one-way valve 214.
[0046] 3. The gaseous working fluid on the first side of the heat dissipation capillary structure 21 undergoes a second phase change after passing through the external condenser, transforming into a liquid working fluid. It then flows back to the second side of the heat dissipation capillary structure 21 through the first Tesla one-way valve 213 and finally returns to the liquid storage tank 111 of the heat spreader 1 to continue the phase change cycle. Thus, under the action of the thermosiphon principle, a highly efficient heat dissipation effect of circulating heat exchange is achieved.
[0047] Example 2
[0048] Please see Figure 5 In Example 2, based on Example 1, several spaced-apart horizontal wings 3 are added to the side of each fin 2 to increase the heat dissipation of the fin 2.
[0049] Example 3
[0050] Please see Figure 6 In Example 3, based on Example 1, a heat pipe groove 4 is opened on the back of the heat spreader 1, and a heat pipe is installed in the heat pipe groove 4 to make the heat more concentrated.
[0051] Compared to existing technologies, the heat exchanger with capillary fins in this case, by setting capillary structures in the heat exchange plate and fins respectively, ensures that even when inverted, it can overcome the influence of natural gravity on the circulating cooling medium and efficiently complete heat exchange and heat dissipation.
[0052] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A flip-mounted high-efficiency heat sink, comprising a heat spreader (1) and a plurality of fins (2) arranged side-by-side at intervals on the heat spreader substrate, characterized in that: The temperature equalization plate (1) includes a base plate (11) and a cover plate (12) covering the base plate (11); a liquid storage tank (111) is provided on the top surface of the base plate (11), and an injection port (112) is provided on the side wall of the liquid storage tank (111); and slots (121) are provided side by side at intervals on the cover plate (12). The fin (2) has several heat dissipation capillary structures (21) spaced apart inside. Each heat dissipation capillary structure (21) includes a gate-shaped main microtube (211) and several oblique microtubes (212) connected obliquely between the main microtubes (211). A first Tesla one-way valve (213) is provided at the top of the main microtube (211), and a second Tesla one-way valve (214) is provided on the oblique microtubes (212). The second Tesla one-way valve (214) is arranged in the opposite direction to the first Tesla one-way valve (213). The bottom of the main microtube (211) is connected to the liquid storage tank (111) on the substrate (11) through a through hole (122) in the slot (121) of the cover plate (12).
2. The invertible high-efficiency radiator according to claim 1, characterized in that: The liquid storage tank (111) of the substrate (11) is filled with a uniform temperature capillary structure, which is at least one of a multilayer copper mesh layer or a multilayer sintered copper powder layer.
3. The invertible high-efficiency radiator according to claim 1, characterized in that: It also includes an external condenser connected to the fins (2).
4. The invertible high-efficiency heat sink according to claim 1, characterized in that: The fins (2) are also provided with horizontal wings (3) arranged side by side at intervals.
5. The invertible high-efficiency radiator according to claim 1, characterized in that: The heat pipe groove (4) is opened on the back of the heat distribution plate (1), and a heat pipe is installed in the heat pipe groove (4).
6. The invertible high-efficiency heat sink according to claim 1, characterized in that: Two liquid storage tanks (111) are arranged side by side on the substrate (11); four heat dissipation capillary structures (21) are arranged in the fins (2). The four heat dissipation capillary structures (21) are grouped in pairs, and the two heat dissipation capillary structures (21) in the first group correspond to the first liquid storage tank (111), and the two heat dissipation capillary structures (21) in the second group correspond to the second liquid storage tank (111).
7. The invertible high-efficiency radiator according to claim 1, characterized in that: The cover plate (12) is connected and sealed to the substrate (11) by welding.
8. A high-efficiency, invertible radiator according to claim 1, characterized in that: The fins (2) and the cover plate (12) are connected and sealed by welding after being embedded in the slots (121) on the cover plate (12).
9. A high-efficiency, invertible radiator according to claim 1, characterized in that: The main microtube (211) and the oblique microtube (212) in the fin (2) both have a diameter of less than 2 mm.