Double-layer radiator

Abstract

The utility model provides a double-layer radiator. The double-layer radiator comprises a first radiating structure and a second radiating structure which are communicated with each other, the first heat dissipation structure comprises a first liquid tank, a second liquid tank and a first heat dissipation assembly connected between the first liquid tank and the second liquid tank, and the second heat dissipation structure comprises a third liquid tank, a fourth liquid tank and a second heat dissipation assembly connected between the third liquid tank and the fourth liquid tank; the first heat dissipation structure is fixedly arranged on the upper surface of the second heat dissipation structure, the first liquid tank is communicated with the third liquid tank, and the second liquid tank is communicated with the fourth liquid tank; the first heat dissipation assembly comprises an upper liquid passing channel used for conducting cooling liquid, and the second heat dissipation assembly comprises a lower liquid passing channel used for conducting cooling liquid. According to the double-layer radiator, the double-layer heat dissipation structure is arranged, so that the cooling liquid circularly flows between the first heat dissipation structure and the second heat dissipation structure, and the cooling efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of heat dissipation technology, and in particular to a liquid-cooled double-layer radiator. Background Art

[0002] With the development of electronic devices, especially the improvement of computer and server performance and the increase of processor computing, the heat generated by the equipment has increased significantly. In order to ensure the stability and reliability of the equipment, efficient heat dissipation technology has become particularly important.

[0003] Traditional air radiators can no longer meet the heat dissipation requirements of high-power equipment. Liquid cooling radiators have become an important choice due to their excellent heat dissipation performance.

[0004] However, the existing liquid cooling radiators still have room for improvement in structure and heat dissipation efficiency. The need to set up a coolant circulation pipeline will increase the overall volume and occupy limited chassis space; if the volume of the radiator is reduced, the heat dissipation effect will be reduced. Especially in the field of double-layer radiators, how to improve its thermal conductivity, simplify the structural design, and improve the flow efficiency of the coolant are still urgent issues to be solved. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present application provides a liquid-cooled double-layer radiator to solve the problems of low heat dissipation efficiency and complex structure existing in the prior art.

[0006] Specifically, the present application provides a double-layer radiator, which includes a first heat dissipation structure and a second heat dissipation structure that are connected to each other; the first heat dissipation structure includes a first liquid tank, a second liquid tank, and a first heat dissipation component connected between the first liquid tank and the second liquid tank, and the second heat dissipation structure includes a third liquid tank, a fourth liquid tank, and a second heat dissipation component connected between the third liquid tank and the fourth liquid tank; the first heat dissipation structure is fixedly arranged on the upper surface of the second heat dissipation structure, the first liquid tank and the third liquid tank are connected to each other, and the second liquid tank and the fourth liquid tank are connected to each other; the first heat dissipation component includes an upper liquid passage for conducting the cooling liquid, and the second heat dissipation component includes a lower liquid passage for conducting the cooling liquid.

[0007] In an optional implementation, a first partition and a second partition are arranged side by side inside the first liquid tank, and the first partition and the second partition divide the interior of the first liquid tank into a first upper liquid chamber, a second upper liquid chamber and a third upper liquid chamber; a third partition is arranged inside the second liquid tank, and the third partition divides the interior of the second liquid tank into a fourth upper liquid chamber and a fifth upper liquid chamber; the fourth upper liquid chamber is connected to the first upper liquid chamber and the second upper liquid chamber respectively through an upper liquid passage, and the fifth upper liquid chamber is connected to the second upper liquid chamber and the third upper liquid chamber respectively through an upper liquid passage.

[0008] In an optional implementation, a fourth partition and a fifth partition are arranged side by side inside the third liquid tank, and the fourth partition and the fifth partition divide the interior of the first liquid tank into a first lower liquid chamber, a second lower liquid chamber and a third lower liquid chamber; a sixth partition is arranged inside the second liquid tank, and the sixth partition divides the interior of the second liquid tank into a fourth lower liquid chamber and a fifth lower liquid chamber; the fourth lower liquid chamber is connected to the first lower liquid chamber and the second lower liquid chamber respectively through the lower liquid passage, and the fifth lower liquid chamber is connected to the second lower liquid chamber and the third lower liquid chamber respectively through the lower liquid passage.

[0009] In an optional implementation, the lower surface of the first liquid tank is provided with a first upper liquid hole and a second upper liquid hole, the first upper liquid hole is connected to the first upper liquid chamber, and the second upper liquid hole is connected to the third upper liquid chamber; the upper surface of the third liquid tank is provided with a first lower liquid hole and a second lower liquid hole, the first lower liquid hole is connected to the first lower liquid chamber, and the second lower liquid hole is connected to the third lower liquid chamber; the first upper liquid hole is connected to the first lower liquid hole, and the second upper liquid hole is connected to the second lower liquid hole.

[0010] In an optional implementation, a third upper liquid passing hole and a fourth upper liquid passing hole are provided on the lower surface of the second liquid tank, the third upper liquid passing hole is connected to the fourth upper liquid chamber, and the fourth upper liquid passing hole is connected to the fifth upper liquid chamber; a third lower liquid passing hole and a fourth lower liquid passing hole are provided on the upper surface of the fourth liquid tank, the third lower liquid passing hole is connected to the fourth lower liquid chamber, and the fourth lower liquid passing hole is connected to the fifth lower liquid chamber; the third upper liquid passing hole is connected to the third lower liquid passing hole, and the fourth upper liquid passing hole is connected to the fourth lower liquid passing hole.

[0011] In an optional implementation, the first heat dissipation component and the second heat dissipation component both include a plurality of heat sinks for heat dissipation, the upper liquid passage and the lower liquid passage are both composed of liquid-passing flat tubes arranged side by side, and the heat sinks are arranged on the sides of the liquid-passing flat tubes and in contact with the liquid-passing flat tubes.

[0012] In an optional implementation, the first heat dissipation structure also includes a first side plate and a second side plate, which are arranged opposite to each other and are respectively arranged on both sides of the first heat dissipation component; the second heat dissipation structure also includes a third side plate and a fourth side plate, which are arranged opposite to each other and are respectively arranged on both sides of the second heat dissipation component; the two ends of the first side plate are respectively connected to the first liquid tank and the second liquid tank, and the two ends of the second side plate are respectively connected to the first liquid tank and the second liquid tank; the two ends of the third side plate are respectively connected to the third liquid tank and the fourth liquid tank, and the two ends of the fourth side plate are respectively connected to the third liquid tank and the fourth liquid tank.

[0013] In an optional implementation, the first heat dissipation structure also includes a first inner plate and a second inner plate for limiting the movement of the heat sink, the first inner plate is arranged between the first side plate and the first heat dissipation component, and the second inner plate is arranged between the second side plate and the first heat dissipation component; the second heat dissipation structure also includes a third inner plate and a fourth inner plate for limiting the movement of the heat sink, the third inner plate is arranged between the third side plate and the second heat dissipation component, and the fourth inner plate is arranged between the fourth side plate and the second heat dissipation component.

[0014] The double-layer heat sink provided by the aforementioned implementation has at least the following advantages:

[0015] (1) The double-layer radiator is provided with a double-layer heat dissipation structure so that the coolant circulates between the first heat dissipation structure and the second heat dissipation structure, thereby improving the cooling efficiency.

[0016] (2) The double-layer radiator provides partitions and liquid holes inside each liquid tank, so that the coolant can flow smoothly between the liquid chambers, thereby improving the heat conduction efficiency of the radiator.

[0017] (3) The double-layer radiator increases the surface area of ​​the radiator by arranging the liquid-passing flat tubes and folded radiator fins side by side, thereby significantly improving the heat dissipation efficiency.

[0018] (4) The double-layer radiator can effectively limit the movement of the heat sink by setting the side plates and inner plates on both sides of the heat dissipation structure, ensuring the close contact between the heat sink and the liquid-passing flat tubes, thereby further improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A schematic diagram of the structure of a double-layer radiator provided in one embodiment of the present application;

[0021] Figure 2 A schematic structural diagram of a double-layer radiator provided in another angle in an embodiment of the present application;

[0022] Figure 3 An exploded view of a double-layer radiator provided in one embodiment of the present application;

[0023] Figure 4 A schematic diagram of the positions of the liquid-passing flat tubes and the heat sink of a heat dissipation assembly provided in one embodiment of the present application;

[0024] Figure 5 A schematic structural diagram of a first heat dissipation structure of a double-layer heat sink provided in one embodiment of the present application, wherein heat sinks are not shown;

[0025] Figure 6 A cross-sectional schematic diagram of a first heat dissipation structure of a double-layer heat sink provided in one embodiment of the present application, wherein the heat sink is not shown;

[0026] Figure 7 A schematic diagram of the structure of a second heat dissipation structure of a double-layer heat sink provided in one embodiment of the present application, wherein the heat sink is not shown;

[0027] Figure 8 A cross-sectional schematic diagram of a second heat dissipation structure of a double-layer heat sink provided in one embodiment of the present application, wherein the heat sink is not shown;

[0028] Fig. 9 A vertical cross-sectional view of a double-layer radiator provided in one embodiment of the present application.

[0029] Description of reference numerals:

[0030] 1. First heat dissipation structure; 2. Second heat dissipation structure; 11. First liquid tank; 111. First upper liquid chamber; 112. Second upper liquid chamber; 113. Third upper liquid chamber; 114. First upper liquid hole; 115. Second upper liquid hole; 116. First mounting hole; 117. Second mounting hole; 118. First liquid nozzle; 119. Second liquid nozzle; 12. Second liquid tank; 121. Fourth upper liquid chamber; 122. Fifth upper liquid chamber; 123. Third upper liquid hole ; 124, fourth upper liquid hole; 13, first heat dissipation component; 131, upper liquid channel; 14, first baffle; 15, second baffle; 16, third baffle; 17, first side plate; 171, first inner plate; 18, second side plate; 181, second inner plate; 19, blocking plate; 21, third liquid tank; 211, first lower liquid chamber; 212, second lower liquid chamber; 213, third lower liquid chamber; 214, first lower liquid hole; 215, second lower liquid hole;

[0031] 22, fourth liquid tank; 221, fourth lower liquid storage chamber; 222, fifth lower liquid storage chamber; 223, third lower liquid passage hole; 224, fourth lower liquid passage hole;

[0032] 23. Second heat dissipation component; 231. Lower liquid passage; 24. Fourth partition; 25. Fifth partition; 26. Sixth partition; 27. Third side plate; 271. Third inner plate; 28. Fourth side plate; 281. Fourth inner plate; 31. Liquid flat tube; 32. Heat sink. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] In this document, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0035] In addition, in this article, directional terms such as "upper" and "lower" are defined relative to the orientation of the structure schematically placed in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to the change of the orientation of the structure.

[0036] See also Figures 1 to 9 The present application provides a double-layer radiator, which includes a first heat dissipation structure 1 and a second heat dissipation structure 2 that are connected. The cooling liquid flowing through the first heat dissipation structure 1 and the second heat dissipation structure 2 can absorb heat and dissipate heat from the heating device, thereby achieving a cooling effect.

[0037] Specific, combined Figure 1 and Figure 2 In one embodiment, the double-layer radiator includes a first heat dissipation structure 1 and a second heat dissipation structure 2 that are connected to each other; the first heat dissipation structure 1 includes a first liquid tank 11, a second liquid tank 12, and a first heat dissipation component 13 connected between the first liquid tank 11 and the second liquid tank 12, and the second heat dissipation structure 2 includes a third liquid tank 21, a fourth liquid tank 22, and a second heat dissipation component 23 connected between the third liquid tank 21 and the fourth liquid tank 22; the first heat dissipation structure 1 is fixedly arranged on the upper surface of the second heat dissipation structure 2, the first liquid tank 11 and the third liquid tank 21 are connected to each other, and the second liquid tank 12 and the fourth liquid tank 22 are connected to each other.

[0038] Combination Figure 5 and Figure 7 The first heat dissipation component 13 includes an upper liquid passage 131 for conducting the cooling liquid, and the second heat dissipation component 23 includes a lower liquid passage 231 for conducting the cooling liquid.

[0039] By fixing the first heat dissipation structure 1 on the second heat dissipation structure 2, an integral double-layer heat dissipation system is formed. This structural design increases the surface area of ​​the radiator and effectively improves the heat dissipation efficiency. At the same time, the arrangement of the upper liquid passage 131 and the lower liquid passage 231 ensures the effective circulation of the coolant, making the heat dissipation effect more significant.

[0040] Combination Figure 3 and Figure 6 As shown, in this embodiment, a first partition plate 14 and a second partition plate 15 are arranged side by side inside the first liquid tank 11, and the first partition plate 14 and the second partition plate 15 divide the interior of the first liquid tank 11 into a first upper liquid holding chamber 111, a second upper liquid holding chamber 112 and a third upper liquid holding chamber 113; a third partition plate 16 is arranged inside the second liquid tank 12, and the third partition plate 16 divides the interior of the second liquid tank 12 into a fourth upper liquid holding chamber 121 and a fifth upper liquid holding chamber 122; the fourth upper liquid holding chamber 121 is connected to the first upper liquid holding chamber 111 and the second upper liquid holding chamber 112 respectively through the upper liquid passage 131, and the fifth upper liquid holding chamber 122 is connected to the second upper liquid holding chamber 112 and the third upper liquid holding chamber 113 respectively through the upper liquid passage 131.

[0041] By arranging partitions inside the first liquid tank 11 and the second liquid tank 12, the liquid tanks can be divided into multiple liquid chambers, increasing the flow path of the coolant, thereby improving the heat dissipation effect. The arrangement of the partitions can also effectively prevent the coolant from short-circuiting during the flow process, ensuring that the coolant can be evenly distributed, further improving the heat dissipation efficiency.

[0042] Combination Figure 3 and Figure 8 As shown, in this embodiment, the fourth partition plate 24 and the fifth partition plate 25 are arranged side by side inside the third liquid tank 21, and the fourth partition plate 24 and the fifth partition plate 25 divide the interior of the first liquid tank 11 into a first lower liquid chamber 211, a second lower liquid chamber 212 and a third lower liquid chamber 213; the sixth partition plate 26 is arranged inside the second liquid tank 12, and the sixth partition plate 26 divides the interior of the second liquid tank 12 into a fourth lower liquid chamber 221 and a fifth lower liquid chamber 222; the fourth lower liquid chamber 221 is connected to the first lower liquid chamber 211 and the second lower liquid chamber 212 respectively through the lower liquid passage 231, and the fifth lower liquid chamber 222 is connected to the second lower liquid chamber 212 and the third lower liquid chamber 213 respectively through the lower liquid passage 231.

[0043] Similar to the design of the first liquid tank 11 and the second liquid tank 12, the third liquid tank 21 and the fourth liquid tank 22 form multiple lower liquid storage chambers through the arrangement of internal partitions, and connect different liquid storage chambers through the lower liquid passage 231. This not only increases the flow path of the coolant, but also ensures the uniform distribution of the coolant in the entire radiator, thereby improving the overall heat dissipation efficiency.

[0044] Combination Figure 5 , Figure 7 and Figure 8 As shown, in this embodiment, the lower surface of the first liquid tank 11 is provided with a first upper liquid hole 114 and a second upper liquid hole 115, the first upper liquid hole 114 is connected to the first upper liquid chamber 111, and the second upper liquid hole 115 is connected to the third upper liquid chamber 113; the upper surface of the third liquid tank 21 is provided with a first lower liquid hole 214 and a second lower liquid hole 215, the first lower liquid hole 214 is connected to the first lower liquid chamber 211, and the second lower liquid hole 215 is connected to the third lower liquid chamber 213; the first upper liquid hole 114 is connected to the first lower liquid hole 214, and the second upper liquid hole 115 is connected to the second lower liquid hole 215.

[0045] A third upper liquid passage hole 123 and a fourth upper liquid passage hole 124 are provided on the lower surface of the second liquid tank 12. The third upper liquid passage hole 123 is connected to the fourth upper liquid chamber 121, and the fourth upper liquid passage hole 124 is connected to the fifth upper liquid chamber 122. A third lower liquid passage hole 223 and a fourth lower liquid passage hole 224 are provided on the upper surface of the fourth liquid tank 22. The third lower liquid passage hole 223 is connected to the fourth lower liquid chamber 221, and the fourth lower liquid passage hole 224 is connected to the fifth lower liquid chamber 222. The third upper liquid passage hole 123 is connected to the third lower liquid passage hole 223, and the fourth upper liquid passage hole 124 is connected to the fourth lower liquid passage hole 224.

[0046] By arranging liquid holes on the upper and lower surfaces of the liquid tank, communication between the upper liquid chamber and the lower liquid chamber is achieved, the flow path of the coolant is increased, and it is ensured that the coolant can flow smoothly in the entire double-layer radiator.

[0047] Combination Figure 3 and Fig. 9 As shown, in this embodiment, the first liquid tank 11 is provided with a first mounting hole 116 and a second mounting hole 117, the first mounting hole 116 is provided with a first liquid nozzle 118, the second mounting hole 117 is provided with a second liquid nozzle 119, the first liquid nozzle 118 is connected to the first upper liquid containing chamber 111, and the second liquid nozzle 119 is connected to the third upper liquid containing chamber 113.

[0048] The installation holes and liquid nozzles are set up to facilitate the injection and discharge of coolant into and out of the liquid tank, which enhances the maintainability and operation convenience of the radiator. The liquid nozzle is set up to ensure that the coolant can quickly enter or discharge the corresponding liquid chamber, thereby improving the heat dissipation efficiency and equipment reliability.

[0049] Combination Figures 3 to 8 As shown, the first heat dissipation component 13 and the second heat dissipation component 23 both include a plurality of heat sinks 32 for heat dissipation, the upper liquid passage 131 and the lower liquid passage 231 are both composed of liquid-passing flat tubes 31 arranged side by side, and the heat sinks 32 are arranged on the sides of the liquid-passing flat tubes 31 and are in contact with the liquid-passing flat tubes 31.

[0050] By providing the heat sink 32 and the liquid-passing flat tube 31, the heat dissipation area can be effectively increased and the heat dissipation efficiency can be improved. The design of the folded heat sink 32 further increases the surface area of ​​the heat sink 32, so that the coolant can contact more heat sinks 32 during the flow process, thereby improving the heat dissipation effect. The close contact between the heat sink 32 and the liquid-passing flat tube 31 ensures that the heat can be quickly transferred to the heat sink 32, thereby improving the heat conduction efficiency of the radiator.

[0051] Combination Figure 4 As shown, in this embodiment, the heat sink 32 is a folded heat sink 32. The folded heat sink 32 increases the surface area of ​​the heat sink 32, thereby improving the heat dissipation efficiency.

[0052] Combination Figure 3 As shown, in this embodiment, the first heat dissipation structure 1 also includes a first side plate 17 and a second side plate 18, which are arranged opposite to each other and are respectively arranged on both sides of the first heat dissipation component 13; the second heat dissipation structure 2 also includes a third side plate 27 and a fourth side plate 28, which are arranged opposite to each other and are respectively arranged on both sides of the second heat dissipation component 23; the two ends of the first side plate 17 are respectively connected to the first liquid tank 11 and the second liquid tank 12, and the two ends of the second side plate 18 are respectively connected to the first liquid tank 11 and the second liquid tank 12; the two ends of the third side plate 27 are respectively connected to the third liquid tank 21 and the fourth liquid tank 22, and the two ends of the fourth side plate 28 are respectively connected to the third liquid tank 21 and the fourth liquid tank 22.

[0053] By providing the side panels, the heat sink 32 and the liquid tank can be effectively fixed, thereby increasing the structural strength of the entire radiator and ensuring that the radiator is not easily deformed or damaged during use. In addition, the provision of the side panels can limit the movement of the heat sink 32, ensuring that the heat sink 32 is in close contact with the liquid-passing flat tube 31, thereby improving the heat dissipation efficiency.

[0054] In this embodiment, both ends of the first liquid tank 11, the second liquid tank 12, the third liquid tank 21 and the fourth liquid tank 22 are set to open structures, and both ends of the first side plate 17, the second side plate 18, the third side plate 27 and the fourth side plate 28 are provided with plugging plates 19, and the shape of the plugging plates 19 matches the liquid tank openings. The first side plate 17 and the second side plate 18 respectively block the openings at both ends of the first liquid tank 11 and the second liquid tank 12, and the third side plate 27 and the fourth side plate 28 respectively block the openings at both ends of the third liquid tank 21 and the fourth liquid tank 22, so as to form closed boxes for containing coolant. By blocking the liquid tank with the side plate, the connection firmness between the side plate and the liquid tank can be improved, and the stability of the overall structure is improved.

[0055] In another embodiment, the first liquid tank 11, the second liquid tank 12, the third liquid tank 21 and the fourth liquid tank 22 may be closed box structures with both ends sealed to contain the cooling liquid. In other embodiments, a closed box structure and an open box structure may be combined.

[0056] Combination Figure 3 As shown, in this embodiment, the first heat dissipation structure 1 also includes a first inner plate 171 and a second inner plate 181 for limiting the movement of the heat sink 32, the first inner plate 171 is arranged between the first side plate 17 and the first heat dissipation component 13, and the second inner plate 181 is arranged between the second side plate 18 and the first heat dissipation component 13; the second heat dissipation structure 2 also includes a third inner plate 271 and a fourth inner plate 281 for limiting the movement of the heat sink 32, the third inner plate 271 is arranged between the third side plate 27 and the second heat dissipation component 23, and the fourth inner plate 281 is arranged between the fourth side plate 28 and the second heat dissipation components.

[0057] By providing the inner plate, the movement of the heat sink 32 can be effectively limited, ensuring the close contact between the heat sink 32 and the liquid-passing flat tube 31, further improving the heat dissipation effect. At the same time, the provision of the inner plate can also increase the overall rigidity and stability of the radiator, ensuring that the radiator maintains good performance and life during use.

[0058] The double-layer radiator provided by the implementation method of the present application is introduced in detail above, and the principle and implementation method of the present application are explained by using specific examples. The above description is only used to help understand the method of the present application and its core mechanism; at the same time, for general technical personnel in this field, according to the ideas of the present application, there will be changes in the specific embodiments and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A double-layer radiator, characterized in that: The double-layer radiator includes a first heat dissipation structure and a second heat dissipation structure that are connected to each other; the first heat dissipation structure includes a first liquid tank, a second liquid tank and a first heat dissipation component connected between the first liquid tank and the second liquid tank, and the second heat dissipation structure includes a third liquid tank, a fourth liquid tank and a second heat dissipation component connected between the third liquid tank and the fourth liquid tank; the first heat dissipation structure is fixedly arranged on the upper surface of the second heat dissipation structure, the first liquid tank and the third liquid tank are connected to each other, and the second liquid tank and the fourth liquid tank are connected to each other; the first heat dissipation component includes an upper liquid passage for conducting the cooling liquid, and the second heat dissipation component includes a lower liquid passage for conducting the cooling liquid.

2. The double-layer radiator according to claim 1, characterized in that: A first partition plate and a second partition plate are arranged side by side inside the first liquid tank, and the first partition plate and the second partition plate divide the interior of the first liquid tank into a first upper liquid chamber, a second upper liquid chamber and a third upper liquid chamber; a third partition plate is arranged inside the second liquid tank, and the third partition plate divides the interior of the second liquid tank into a fourth upper liquid chamber and a fifth upper liquid chamber; the fourth upper liquid chamber is connected to the first upper liquid chamber and the second upper liquid chamber respectively through the upper liquid passage, and the fifth upper liquid chamber is connected to the second upper liquid chamber and the third upper liquid chamber respectively through the upper liquid passage.

3. The double-layer radiator according to claim 2, characterized in that: A fourth partition plate and a fifth partition plate are arranged side by side inside the third liquid tank, and the fourth partition plate and the fifth partition plate divide the interior of the first liquid tank into a first lower liquid chamber, a second lower liquid chamber and a third lower liquid chamber; a sixth partition plate is arranged inside the second liquid tank, and the sixth partition plate divides the interior of the second liquid tank into a fourth lower liquid chamber and a fifth lower liquid chamber; the fourth lower liquid chamber is connected to the first lower liquid chamber and the second lower liquid chamber respectively through the lower liquid passage, and the fifth lower liquid chamber is connected to the second lower liquid chamber and the third lower liquid chamber respectively through the lower liquid passage.

4. The double-layer radiator according to claim 3, characterized in that: A first upper liquid hole and a second upper liquid hole are provided on the lower surface of the first liquid tank, the first upper liquid hole is communicated with the first upper liquid chamber, and the second upper liquid hole is communicated with the third upper liquid chamber; The upper surface of the third liquid tank is provided with a first lower liquid hole and a second lower liquid hole, the first lower liquid hole is communicated with the first lower liquid chamber, and the second lower liquid hole is communicated with the third lower liquid chamber; The first upper liquid-passing hole is communicated with the first lower liquid-passing hole, and the second upper liquid-passing hole is communicated with the second lower liquid-passing hole.

5. The double-layer radiator according to claim 4, characterized in that: A third upper liquid hole and a fourth upper liquid hole are provided on the lower surface of the second liquid tank, the third upper liquid hole is communicated with the fourth upper liquid chamber, and the fourth upper liquid hole is communicated with the fifth upper liquid chamber; The upper surface of the fourth liquid tank is provided with a third lower liquid through hole and a fourth lower liquid through hole, the third lower liquid through hole is communicated with the fourth lower liquid storage chamber, and the fourth lower liquid through hole is communicated with the fifth lower liquid storage chamber; The third upper liquid-passing hole is communicated with the third lower liquid-passing hole, and the fourth upper liquid-passing hole is communicated with the fourth lower liquid-passing hole.

6. The double-layer radiator according to claim 2, characterized in that: The first liquid tank is provided with a first mounting hole and a second mounting hole, the first mounting hole is provided with a first liquid nozzle, the second mounting hole is provided with a second liquid nozzle, the first liquid nozzle is connected to the first upper liquid chamber, and the second liquid nozzle is connected to the third upper liquid chamber.

7. The double-layer radiator according to claim 1, characterized in that: The first heat dissipation component and the second heat dissipation component both include a plurality of heat sinks for dissipating heat. The upper liquid passage and the lower liquid passage are both composed of liquid-passing flat tubes arranged side by side. The heat sinks are arranged on the sides of the liquid-passing flat tubes and are in contact with the liquid-passing flat tubes.

8. The double-layer radiator according to claim 7, characterized in that: The heat sink is a folded heat sink.

9. The double-layer radiator according to claim 1, characterized in that: The first heat dissipation structure further includes a first side plate and a second side plate, the first side plate and the second side plate are arranged opposite to each other and are respectively arranged on both sides of the first heat dissipation component; The second heat dissipation structure further includes a third side plate and a fourth side plate, wherein the third side plate and the fourth side plate are arranged opposite to each other and are respectively arranged on two sides of the second heat dissipation component; Two ends of the first side plate are connected to the first liquid tank and the second liquid tank respectively, and two ends of the second side plate are connected to the first liquid tank and the second liquid tank respectively; Two ends of the third side plate are connected to the third liquid tank and the fourth liquid tank respectively, and two ends of the fourth side plate are connected to the third liquid tank and the fourth liquid tank respectively.

10. The double-layer radiator according to claim 9, characterized in that: The first heat dissipation structure further includes a first inner plate and a second inner plate for limiting the movement of the heat sink, the first inner plate being arranged between the first side plate and the first heat dissipation assembly, and the second inner plate being arranged between the second side plate and the first heat dissipation assembly; The second heat dissipation structure also includes a third inner plate and a fourth inner plate for limiting the movement of the heat sink, the third inner plate is arranged between the third side plate and the second heat dissipation component, and the fourth inner plate is arranged between the fourth side plate and the second heat dissipation components.

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