Heat dissipating device and engine

Abstract

The application provides a heat dissipation device and an engine. The heat dissipation device has a cooling liquid inlet for the cooling liquid to flow in and a cooling liquid outlet for the cooling liquid to flow out. The heat dissipation device comprises a heat dissipation cylinder assembly, which comprises a heat dissipation component, a first heat dissipation cylinder and a second heat dissipation cylinder. The first heat dissipation cylinder has a first cavity and the cooling liquid inlet. The second cylinder wall of the second heat dissipation cylinder has a third cavity which is communicated with the cooling liquid outlet. The first heat dissipation cylinder and the second heat dissipation cylinder form a first heat dissipation channel, and the heat dissipation component is arranged in the first heat dissipation channel so that the gas flowing through the first heat dissipation channel passes through the heat dissipation component. The heat dissipation component comprises a plurality of heat dissipation pieces, and the heat dissipation pieces have fourth cavities which are respectively communicated with the first cavity and the third cavity. The heat dissipation device solves the problem of low heat dissipation efficiency caused by the difficulty of the cooling liquid backflow of the engine radiator in the prior art.

Description

Technical Field

[0001] This invention relates to the field of radiator technology, and more specifically, to a heat dissipation device and an engine. Background Technology

[0002] The engine radiator, also known as the engine water tank, is a key component of a water-cooled engine cooling system. It cools the engine through forced water circulation, ensuring continuous operation within its normal temperature range. The radiator primarily utilizes the heat loss of the coolant; this heat loss is essential for maintaining the proper temperature of the internal combustion engine. Generally, a water pump driven by the engine forces the coolant to circulate throughout the engine. The radiator is the device that absorbs the heat generated by the engine and dissipates it into the air.

[0003] The basic performance of a radiator is characterized by the various temperatures and heats before and after heat exchange between the low-temperature fluid air and the high-temperature fluid water. For stacked hybrid radiators, the front motor radiator and intercooler radiator will seriously hinder the heat dissipation of the rear engine radiator, resulting in poor airflow in the engine radiator, affecting the heat exchange between the low-temperature air and the high-temperature coolant in the engine radiator, and thus affecting the heat dissipation efficiency of the engine radiator.

[0004] To address the low heat dissipation efficiency of engine radiators, an internally driven fan-blade internal circulation radiator has been proposed in the prior art. Cooling is achieved through guide tubes arranged inside the fan blades. High-temperature coolant enters the guide tubes inside the fan blades through an inlet chamber integrated with the shaft, circulates through the fan blades, and then re-enters the outlet chamber integrated with the shaft. The inlet and outlet chambers are separated by a wheel core partition. Each stage of the cooling fan is connected by a connecting shaft integrated with the shaft, enabling multi-stage heat dissipation. The main feature of this internally driven fan-blade internal circulation radiator is that the coolant flows from the root of the heat dissipation fins through the guide tubes to the fin surface for cooling, and then returns to the root of the heat dissipation fins through the guide tubes.

[0005] However, the return flow from the fins to the outlet chamber can be difficult due to centrifugal force, and the reduced diameter of the guide tube increases water resistance. Furthermore, because the coolant temperature varies significantly over time, the thermal expansion and contraction effect places high demands on the sealing of the entire system, whether connected in series or parallel. Summary of the Invention

[0006] The main objective of this invention is to provide a heat dissipation device and an engine to solve the problem of low heat dissipation efficiency caused by the difficulty of coolant return in the engine radiator in the prior art.

[0007] To achieve the above objectives, according to one aspect of the present invention, a heat dissipation device is provided, having a coolant inlet for introducing coolant and a coolant outlet for discharging coolant. The heat dissipation device includes: a heat dissipation cylinder assembly, rotatably disposed, the heat dissipation cylinder assembly including a heat dissipation component, a first heat dissipation cylinder, and a second heat dissipation cylinder sleeved on the first heat dissipation cylinder; the first heat dissipation cylinder has a first cavity and a coolant inlet communicating with the first cavity; the second cylinder wall of the second heat dissipation cylinder has a third cavity communicating with the coolant outlet; a first heat dissipation channel is formed between the first heat dissipation cylinder and the second heat dissipation cylinder; the heat dissipation component is disposed within the first heat dissipation channel so that gas flowing through the first heat dissipation channel passes through the heat dissipation component; the heat dissipation component includes a heat dissipation element, the heat dissipation element having a fourth cavity, the fourth cavity communicating with the first cavity and the third cavity respectively.

[0008] Furthermore, the first heat dissipation channel has a first inlet and a first outlet sequentially arranged along the axial direction of the second heat dissipation cylinder; the first heat dissipation channel includes a first channel section, the flow cross-sectional area of ​​the first channel section gradually decreasing from the first inlet to the first outlet. Further, from the first inlet to the first outlet, the first channel section has a first end and a second end sequentially arranged, wherein the first heat dissipation channel also includes a second channel section, one end of which is connected to the second end of the first channel section, and the other end of the second channel section forms the first outlet; from the first inlet to the first outlet, the flow cross-sectional area of ​​the second channel section gradually increases.

[0009] Furthermore, in the direction from the first inlet to the first outlet, the first channel segment has a first end and a second end arranged sequentially. The first heat dissipation channel also includes a third channel segment, one end of which is connected to the first end of the first channel segment, and the other end of the third channel segment forms the first inlet. In the direction from the first inlet to the first outlet, the flow cross-sectional area of ​​the third channel segment is equal.

[0010] Furthermore, the second heat dissipation cylinder includes a first cylinder section, a second cylinder section, and a third cylinder section connected sequentially in the direction from the first inlet to the first outlet; in the direction from the first inlet to the first outlet, the diameter of the first cylinder section is equal, the diameter of the second cylinder section gradually decreases, and the diameter of the third cylinder section gradually increases.

[0011] Furthermore, the heat dissipation component includes multiple heat dissipation elements, which are spaced apart along the circumferential direction of the first heat dissipation cylinder; and / or, the heat dissipation device includes multiple heat dissipation components, which are spaced apart along the axial direction of the first heat dissipation cylinder; and / or, the fourth cavity extends along a preset trajectory, which is one of a straight line, a spiral line, and an S-shaped line.

[0012] Furthermore, the heat dissipation device also includes a third cylinder for fixed connection with external components. The third cylinder is sleeved on the second heat dissipation cylinder and forms a second heat dissipation channel with the second heat dissipation cylinder so that gas flows through the second heat dissipation channel; wherein, the heat dissipation cylinder assembly is rotatably arranged relative to the third cylinder.

[0013] Furthermore, the first end of each heat sink component is connected to the first heat sink cylinder, and the second end of each heat sink component is connected to the second heat sink cylinder; the heat dissipation device also includes a driving component, which is drivenly connected to the first heat sink cylinder so that the driving component drives the heat sink cylinder assembly to rotate.

[0014] Furthermore, the heat dissipation device also includes a liquid collection device having a liquid collection chamber and a coolant outlet communicating with the liquid collection chamber, and a third communication port located inside the liquid collection chamber; the heat dissipation cylinder assembly is rotatably disposed relative to the liquid collection device; wherein, the heat dissipation device also includes a sealing device disposed between the liquid collection device and the second heat dissipation cylinder to seal the space between the liquid collection device and the second heat dissipation cylinder; and / or, the heat dissipation device also includes a bearing sleeved on the second heat dissipation cylinder and located between the second heat dissipation cylinder and the liquid collection device.

[0015] According to another aspect of the present invention, an engine is provided, including the aforementioned cooling device.

[0016] According to the technical solution of this invention, the heat dissipation device has a coolant inlet for introducing coolant and a coolant outlet for discharging coolant. The heat dissipation device includes a heat dissipation cylinder assembly, which includes a heat dissipation component, a first heat dissipation cylinder, and a second heat dissipation cylinder. High-temperature coolant flows into the first cavity from the coolant inlet, then enters the fourth cavity of the heat dissipation component. After being cooled by the heat dissipation component, it flows through the third cavity and exits from the coolant outlet. Simultaneously, low-temperature gas flows into the first heat dissipation channel, passes through the heat dissipation component, and exits from the first heat dissipation channel. When the low-temperature air flows through the heat dissipation component containing high-temperature coolant, it exchanges heat with the heat dissipation component, carrying away heat and achieving cooling of the coolant. The rotation of the heat dissipation component increases the flow rate of the low-temperature air, improving the heat exchange rate between the low-temperature air and the heat dissipation component, and thus improving the cooling rate of the high-temperature coolant. Since the coolant flowing out of the heat dissipation component can flow through the third cavity and then exit from the coolant outlet, it does not need to flow back to the first cavity through the heat dissipation component, thereby solving the problem of low heat dissipation efficiency caused by the difficulty of coolant return in the prior art. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of an embodiment of the heat dissipation device according to the present invention is shown;

[0019] Figure 2 A right view of an embodiment of the heat dissipation device according to the present invention is shown;

[0020] Figure 3 A left view of an embodiment of the heat dissipation device according to the present invention is shown.

[0021] The above figures include the following reference numerals:

[0022] 1. Coolant inlet; 2. Coolant outlet; 10. Radiator assembly; 11. Heat dissipation component; 111. Heat dissipation element; 12. First radiator; 121. First cavity; 122. First connecting port; 123. First inlet; 124. First outlet; 125. First channel section; 1251. First transition section; 1252. Connecting section; 1253. Second transition section; 126. Second channel section; 127. Third channel section; 13. Second radiator; 131. Second cavity; 132. Second connecting port; 133. Third connecting port; 134. Third cavity; 135. First cylinder section; 136. Second cylinder section; 137. Third cylinder section; 30. Third cylinder; 31. Second heat dissipation channel; 40. Drive component; 50. Liquid collection device; 51. Liquid collection chamber; 60. Sealing device; 70. Bearing. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] This invention provides a heat dissipation device; please refer to [the relevant documentation]. Figures 1 to 3The device has a coolant inlet 1 for introducing coolant and a coolant outlet 2 for discharging coolant. The heat dissipation device includes a heat dissipation cylinder assembly 10, rotatably mounted, comprising a heat dissipation component 11, a first heat dissipation cylinder 12, and a second heat dissipation cylinder 13 sleeved on the first heat dissipation cylinder 12. The first heat dissipation cylinder 12 has a first cavity 121 and a coolant inlet 1 communicating with the first cavity 121. The second cylinder wall of the second heat dissipation cylinder 13 has a third cavity 134 communicating with the coolant outlet 2. A first heat dissipation channel is formed between the first heat dissipation cylinder 12 and the second heat dissipation cylinder 13. The heat dissipation component 11 is disposed within the first heat dissipation channel so that gas flowing through the first heat dissipation channel passes through the heat dissipation component 11. The heat dissipation component 11 includes a heat dissipation element 111, which has a fourth cavity communicating with both the first cavity 121 and the third cavity 134.

[0027] The heat dissipation device of the present invention has a coolant inlet 1 for introducing coolant and a coolant outlet 2 for discharging coolant. The heat dissipation device includes a heat dissipation cylinder assembly 10, which includes a heat dissipation component 11, a first heat dissipation cylinder 12, and a second heat dissipation cylinder 13. High-temperature coolant flows into the first cavity 121 from the coolant inlet 1, then enters the fourth cavity of the heat dissipation component 111. After being dissipated by the heat dissipation component 111, it flows through the third cavity 134 and then flows out from the coolant outlet 2. At the same time, low-temperature gas flows into the first heat dissipation channel, flows through the heat dissipation component 11, and then flows out from the first heat dissipation channel. When the low-temperature air flows through the heat dissipation component 111 containing high-temperature coolant, it exchanges heat with the heat dissipation component 111 and carries away heat, thereby cooling the coolant. The rotation of the heat dissipation component 111 increases the flow rate of the low-temperature air, improves the heat exchange rate between the low-temperature air and the heat dissipation component 111, and improves the cooling rate of the high-temperature coolant. Since the coolant flowing out of the heat sink 111 can flow through the third cavity 134 and then out of the coolant outlet 2, it does not need to flow back to the first cavity 121 through the heat sink 111 a second time, thus solving the problem of low heat dissipation efficiency caused by the difficulty of coolant return in the engine radiator in the prior art.

[0028] The first heat sink 12 has a first connecting port 122 penetrating its first cylinder wall, and the first connecting port 122 is connected to the first cavity 121; the second heat sink 13 has a second cavity 131 for accommodating the first heat sink 12 and the heat dissipation component 11, and the second cylinder wall of the second heat sink 13 has a second connecting port 132 and a third connecting port 133 connected to the third cavity 134, and the third connecting port 133 is connected to the coolant outlet 2; a first heat dissipation channel is formed between the first heat sink 12 and the second heat sink 13, and a first inlet 123 and a first outlet 124 connected to the first heat dissipation channel are formed. The heat dissipation component 11 is disposed in the first heat dissipation channel so that the gas flowing in from the first inlet 123 flows out from the first outlet 124 after passing through the heat dissipation component 11; the heat dissipation component 11 includes a plurality of heat dissipation elements 111, each heat dissipation element 111 has a fourth cavity, and the fourth cavity is connected to the first connecting port 122 and the second connecting port 132 respectively.

[0029] In specific implementation, the first heat sink 12 has a first cavity 121 and a coolant inlet 1, and the first heat sink 12 has a first connecting port 122. The second heat sink 13 has a second cavity 131. The second cylinder wall of the second heat sink 13 has a third cavity 134, a second connecting port 132 and a third connecting port 133. The third connecting port 133 is connected to the coolant outlet 2. A first heat dissipation channel is formed between the first heat sink 12 and the second heat sink 13, and a first inlet 123 and a first outlet 124 connected to the first heat dissipation channel are formed. The heat dissipation component 11 includes a plurality of heat dissipation elements 111. Each heat dissipation element 111 has a fourth cavity, and the fourth cavity is connected to the first connecting port 122 and the second connecting port 132 respectively. High-temperature coolant flows into the first cavity 121 from the coolant inlet 1, passes through the first connecting port 122, and enters the fourth cavity of the heat sink 111. After being cooled by the heat sink 111, it flows sequentially through the second connecting port 132, the third cavity 134, the third connecting port 133, and the coolant outlet 2 before exiting. At the same time, low-temperature gas flows into the first heat dissipation channel from the first inlet 123, passes through the heat dissipation component 11, and exits from the first outlet 124. When the low-temperature air flows through multiple heat sinks 111 containing high-temperature coolant, it exchanges heat with the heat sinks 111 and carries away heat, thereby cooling the coolant. The rotation of multiple heat sinks 111 increases the flow rate of the low-temperature air, improves the heat exchange rate between the low-temperature air and the heat sinks 111, and improves the cooling rate of the high-temperature coolant. Since the coolant flowing out of the heat sink 111 can flow through the second connecting port 132, the third cavity 134, the third connecting port 133 and the coolant outlet 2 in sequence, it does not need to flow back to the first cavity 121 through the heat sink 111 a second time, thus solving the problem of low heat dissipation efficiency caused by the difficulty of coolant return in the engine radiator in the prior art.

[0030] In this embodiment, the first heat dissipation channel has a first inlet 123 and a first outlet 124 arranged sequentially along the axial direction of the second heat dissipation cylinder 13; the first heat dissipation channel includes a first channel section 125, and the flow cross-sectional area of ​​the first channel section 125 gradually decreases in the direction from the first inlet 123 to the first outlet 124.

[0031] Specifically, in the direction from the first inlet 123 to the first outlet 124, the cross-sectional area of ​​the first channel section 125 gradually decreases. When low-temperature air flows through the first channel section 125, the first channel section 125 can increase the air flow speed due to the Venturi effect, thereby increasing the heat exchange rate between the air and the heat sink 111 at the first channel section 125, and thus increasing the cooling rate of the first channel section 125.

[0032] Specifically, the first channel segment 125 includes a first transition segment 1251, a connecting segment 1252, and a second transition segment 1253 connected sequentially along its extension direction. The first end of the first transition segment 1251 is connected to the third channel segment 127, and the diameters at the connection points of the first transition segment 1251 and the third channel segment 127 are the same. The second end of the first transition segment 1251 is connected to the first end of the connecting segment 1252, and the second end of the connecting segment 1252 is connected to the first end of the second transition segment 1253. The second end of the second transition segment 1253 is connected to the second channel segment 126. The diameter of the first transition segment 1251 gradually decreases along its extension direction, the diameter of the second transition segment 1253 gradually increases along its extension direction, the diameter at the connection point of the second transition segment 1253 and the second channel segment 126 is the same, and the diameter of the connecting segment 1252 remains unchanged along its extension direction.

[0033] In this embodiment, in the direction from the first inlet 123 to the first outlet 124, the first channel segment 125 has a first end and a second end arranged sequentially. The first heat dissipation channel also includes a second channel segment 126. One end of the second channel segment 126 is connected to the second end of the first channel segment 125, and the other end of the second channel segment 126 forms the first outlet 124. In the direction from the first inlet 123 to the first outlet 124, the flow cross-sectional area of ​​the second channel segment 126 gradually increases.

[0034] Specifically, after exchanging heat with the heat sink 111 in the first channel section 125, the air temperature rises and becomes high-temperature air. The high-temperature air flows out from the first outlet 124 after passing through the second channel section 126. In the direction from the first inlet 123 to the first outlet 124, the flow cross-sectional area of ​​the second channel section 126 gradually increases, which can increase the flow volume of the high-temperature air in the second channel section 126, thereby allowing the high-temperature air to flow out of the second channel section 126 quickly and preventing the temperature of the heat sink from rising due to the high-temperature air.

[0035] In this embodiment, in the direction from the first inlet 123 to the first outlet 124, the first channel segment 125 has a first end and a second end arranged sequentially. The first heat dissipation channel also includes a third channel segment 127, one end of which is connected to the first end of the first channel segment 125, and the other end of the third channel segment 127 forms the first inlet 123. In the direction from the first inlet 123 to the first outlet 124, the flow cross-sectional area of ​​the third channel segment 127 is equal.

[0036] Specifically, low-temperature air enters the third channel section 127 from the first inlet 123 and then flows into the first channel section 125. The flow cross-sectional area of ​​the third channel section 127 is equal in the direction from the first inlet 123 to the first outlet 124, which helps the low-temperature air to fully exchange heat with the heat sink 111 in the third channel section 127, thereby improving the heat dissipation rate of the third channel section 127.

[0037] In this embodiment, the second heat dissipation cylinder 13 includes a first cylinder section 135, a second cylinder section 136, and a third cylinder section 137 connected sequentially in the direction from the first inlet 123 to the first outlet 124; in the direction from the first inlet 123 to the first outlet 124, the diameter of the first cylinder section 135 is equal, the diameter of the second cylinder section 136 gradually decreases, and the diameter of the third cylinder section 137 gradually increases.

[0038] Specifically, in the direction from the first inlet 123 to the first outlet 124, the diameter of the first cylindrical section 135 is equal, the diameter of the second cylindrical section 136 gradually decreases, the diameter of the third cylindrical section 137 gradually increases, and the diameter of the first heat dissipation cylinder 12 is equal, so that a third channel section 127 is formed between the first heat dissipation cylinder 12 and the first cylindrical section 135, a first channel section 125 is formed between the first heat dissipation cylinder 12 and the second cylindrical section 136, and a second channel section 126 is formed between the first heat dissipation cylinder 12 and the third cylindrical section 137, thereby improving the heat dissipation rate of the first heat dissipation channel.

[0039] Specifically, the third channel section 127 can remove as much heat as possible. After being heated by three to four heat sinks 111, the temperature of the low-temperature air rises, and the cooling effect weakens. To further enhance the cooling effect, the first channel section 125 uses the Venturi effect to accelerate the high-temperature air and improve the cooling capacity of the first channel section 125. After being heated by the first two channel sections, the high-temperature air passes through the second channel section 126, which is designed as a variable diameter section with a gradually increasing radius, so that the high-temperature air can be discharged as quickly as possible.

[0040] In this embodiment, the heat dissipation component 11 includes a plurality of heat dissipation elements 111, which are spaced apart along the circumferential direction of the first heat dissipation cylinder 12; and / or, the heat dissipation device includes a plurality of heat dissipation components 11, which are spaced apart along the axial direction of the first heat dissipation cylinder 12; and / or, the fourth cavity extends along a preset trajectory, which is one of a straight line, a spiral line, and an S-shaped line.

[0041] Specifically, multiple heat sinks 111 are spaced apart along the circumferential direction of the first heat sink cylinder 12, so that the multiple heat sinks 111 can fully dissipate heat from the high-temperature coolant, thereby improving the heat dissipation rate of the heat sink 11.

[0042] Specifically, multiple heat dissipation components 11 are spaced apart along the axial direction of the first heat dissipation cylinder 12, so that the multiple heat dissipation components 11 can further increase the air flow speed, thereby increasing the heat dissipation rate of the heat dissipation device.

[0043] Specifically, the fourth cavity extends along a preset trajectory, which is one of a straight line, a spiral line, or an S-shaped line, so that the shape of the heat sink 111 can be processed according to the actual situation, thereby improving the application range of the heat sink device.

[0044] Specifically, the shape and number of heat sink 111 are not limited; it can be a conventional fan style or a special style, and it can be three or six pieces.

[0045] In this embodiment, the heat dissipation device further includes a third cylinder 30 for fixed connection with an external component. The third cylinder 30 is sleeved on the second heat dissipation cylinder 13 and forms a second heat dissipation channel 31 with the second heat dissipation cylinder 13 so that gas flows through the second heat dissipation channel 31. The heat dissipation cylinder assembly 10 is rotatably disposed relative to the third cylinder 30.

[0046] Specifically, the third cylinder 30 is fitted onto the second heat sink 13 to wrap around the heat sink assembly 10, reducing harm to the human body or other objects; at the same time, the third cylinder 30 serves to connect the external components and the heat sink assembly 10; in addition, when the heat sink 111 rotates, it will drive the flow of low-temperature air in the space around the third cylinder 30, and at this time, the flowing low-temperature air will be guided by the second heat dissipation channel 31 under the guidance of the third cylinder 30, cooling the outer surface of the second heat sink 13.

[0047] Specifically, the third cylinder 30 includes a fourth cylinder section, a fifth cylinder section, and a sixth cylinder section connected sequentially in the direction from the first inlet 123 to the first outlet 124. In the direction from the first inlet 123 to the first outlet 124, the diameter of the fourth cylinder section gradually decreases, the diameter of the fifth cylinder section gradually decreases, and the diameter of the sixth cylinder section gradually increases.

[0048] Specifically, the second heat dissipation channel 31 includes a fourth channel segment, a fifth channel segment, and a sixth channel segment connected sequentially in the direction from the first inlet 123 to the first outlet 124. In the direction from the first inlet 123 to the first outlet 124, the flow cross-sectional area of ​​the fourth channel segment gradually decreases, the flow cross-sectional area of ​​the fifth channel segment gradually decreases, and the flow cross-sectional area of ​​the sixth channel segment gradually increases.

[0049] In this embodiment, the first end of each heat sink 111 is connected to the first heat sink 12, and the second end of each heat sink 111 is connected to the second heat sink 13; the heat dissipation device also includes a driving member 40, which is drivenly connected to the first heat sink 12 so that the driving member 40 drives the heat sink assembly 10 to rotate.

[0050] Specifically, the center lines of the first heat sink 12 and the second heat sink 13 coincide. The driving component 40 drives the first heat sink 12 to rotate, which in turn drives the heat sink 111 and the second heat sink 13 to rotate. This allows the high-temperature coolant to flow smoothly through the first connecting port 122, the fourth cavity, the second connecting port 132, the third cavity 134, the third connecting port 133 and the coolant outlet 2 under the action of centrifugal force. This helps to increase the flow rate of the coolant, reduce the water resistance of the heat dissipation device and increase the heat dissipation rate of the heat dissipation device.

[0051] Optionally, the drive element 40 is a motor.

[0052] In this embodiment, the heat dissipation device further includes a liquid collection device 50, which has a liquid collection chamber 51 and a coolant outlet 2 communicating with the liquid collection chamber 51. A third communication port 133 is located inside the liquid collection chamber 51. The heat dissipation cylinder assembly 10 is rotatably disposed relative to the liquid collection device 50. The heat dissipation device further includes a sealing device 60, which is disposed between the liquid collection device 50 and the second heat dissipation cylinder 13 to seal the space between the liquid collection device 50 and the second heat dissipation cylinder 13. And / or, the heat dissipation device further includes a bearing 70, which is sleeved on the second heat dissipation cylinder 13 and located between the second heat dissipation cylinder 13 and the liquid collection device 50.

[0053] Specifically, under the action of centrifugal force, the coolant flows into the collection chamber 51 from the third connecting port 133 and then flows out from the coolant outlet 2. The collection device 50 is used to collect the coolant and prevent it from overflowing. The sealing device 60 is used to seal between the collection device 50 and the second heat sink 13 to prevent the coolant in the collection device 50 from overflowing into the second heat sink 13. At the same time, centrifugal force can enhance the sealing effect of the sealing device 60 on the coolant. The bearing 70 is sleeved on the second heat sink 13 and located between the second heat sink 13 and the collection device 50. The bearing 70 is used to support the second heat sink 13.

[0054] Optionally, the sealing device 60 is an oil seal.

[0055] The present invention also provides an engine including the cooling device described in the above embodiments.

[0056] The engine of the present invention includes multiple cooling devices as described in the above embodiments. These multiple cooling devices can be combined in parallel, series or other ways to form a radiator assembly. The heat dissipation device has a coolant inlet 1 for introducing coolant and a coolant outlet 2 for discharging coolant. The heat dissipation device includes a heat dissipation cylinder assembly 10, which includes a heat dissipation component 11, a first heat dissipation cylinder 12, and a second heat dissipation cylinder 13. The first heat dissipation cylinder 12 has a first cavity 121 and a coolant inlet 1, and a first connecting port 122. The second heat dissipation cylinder 13 has a second cavity 131. The second cylinder wall of the second heat dissipation cylinder 13 has a third cavity 134, a second connecting port 132, and a third connecting port 133. The third connecting port 133 is connected to the coolant outlet 2. A first heat dissipation channel is formed between the first heat dissipation cylinder 12 and the second heat dissipation cylinder 13, and a first inlet 123 and a first outlet 124 are connected to the first heat dissipation channel. The heat dissipation component 11 includes a plurality of heat dissipation elements 111, each of which has a fourth cavity. The fourth cavity is connected to the first connecting port 122 and the second connecting port 132, respectively. High-temperature coolant flows into the first cavity 121 from the coolant inlet 1, passes through the first connecting port 122, and enters the fourth cavity of the heat sink 111. After being cooled by the heat sink 111, it flows sequentially through the second connecting port 132, the third cavity 134, the third connecting port 133, and the coolant outlet 2 before exiting. At the same time, low-temperature gas flows into the first heat dissipation channel from the first inlet 123, passes through the heat dissipation component 11, and exits from the first outlet 124. When the low-temperature air flows through multiple heat sinks 111 containing high-temperature coolant, it exchanges heat with the heat sinks 111 and carries away heat, thereby cooling the coolant. The rotation of multiple heat sinks 111 increases the flow rate of the low-temperature air, improves the heat exchange rate between the low-temperature air and the heat sinks 111, and improves the cooling rate of the high-temperature coolant. Since the coolant flowing out of the heat sink 111 can flow through the second connecting port 132, the third cavity 134, the third connecting port 133 and the coolant outlet 2 in sequence, it does not need to flow back to the first cavity 121 through the heat sink 111 a second time, thus solving the problem of low heat dissipation efficiency caused by the difficulty of coolant return in the engine radiator in the prior art.

[0057] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0058] The heat dissipation device of the present invention has a coolant inlet 1 for introducing coolant and a coolant outlet 2 for discharging coolant. The heat dissipation device includes a heat dissipation cylinder assembly 10, which includes a heat dissipation component 11, a first heat dissipation cylinder 12 and a second heat dissipation cylinder 13. The first heat dissipation cylinder 12 has a first cavity 121 and a coolant inlet 1, and a first connecting port 122. The second heat dissipation cylinder 13 has a second cavity 131. The second cylinder wall of the second heat dissipation cylinder 13 has a third cavity 134, a second connecting port 132 and a third connecting port 133. The third connecting port 133 is connected to the coolant outlet 2. A first heat dissipation channel is formed between the first heat dissipation cylinder 12 and the second heat dissipation cylinder 13, and a first inlet 123 and a first outlet 124 are connected to the first heat dissipation channel. The heat dissipation component 11 includes a plurality of heat dissipation elements 111, each heat dissipation element 111 having a fourth cavity, which is connected to the first connecting port 122 and the second connecting port 132 respectively. High-temperature coolant flows into the first cavity 121 from the coolant inlet 1, passes through the first connecting port 122, and enters the fourth cavity of the heat sink 111. After being cooled by the heat sink 111, it flows sequentially through the second connecting port 132, the third cavity 134, the third connecting port 133, and the coolant outlet 2 before exiting. At the same time, low-temperature gas flows into the first heat dissipation channel from the first inlet 123, passes through the heat dissipation component 11, and exits from the first outlet 124. When the low-temperature air flows through multiple heat sinks 111 containing high-temperature coolant, it exchanges heat with the heat sinks 111 and carries away heat, thereby cooling the coolant. The rotation of multiple heat sinks 111 increases the flow rate of the low-temperature air, improves the heat exchange rate between the low-temperature air and the heat sinks 111, and improves the cooling rate of the high-temperature coolant. Since the coolant flowing out of the heat sink 111 can flow through the second connecting port 132, the third cavity 134, the third connecting port 133 and the coolant outlet 2 in sequence, it does not need to flow back to the first cavity 121 through the heat sink 111 a second time, thus solving the problem of low heat dissipation efficiency caused by the difficulty of coolant return in the engine radiator in the prior art.

[0059] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0060] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A heat dissipation device having a coolant inlet (1) for introducing coolant and a coolant outlet (2) for discharging said coolant, characterized in that, The heat dissipation device includes: A heat sink assembly (10) is rotatably disposed. The heat sink assembly (10) includes a heat sink component (11), a first heat sink (12), and a second heat sink (13) sleeved on the first heat sink (12). The first heat sink (12) has a first cavity (121) and a coolant inlet (1) communicating with the first cavity (121). The second wall of the second heat sink (13) has a third cavity (134) communicating with the coolant outlet (2). A first heat dissipation channel is formed between the first heat dissipation cylinder (12) and the second heat dissipation cylinder (13). The heat dissipation component (11) is disposed in the first heat dissipation channel so that the gas flowing through the first heat dissipation channel passes through the heat dissipation component (11). The heat dissipation component (11) includes a heat dissipation element (111), which has a fourth cavity. The fourth cavity is connected to the first cavity (121) and the third cavity (134) respectively. The heat dissipation device further includes a third cylinder (30) for fixed connection with an external component. The third cylinder (30) is sleeved on the second heat dissipation cylinder (13) and forms a second heat dissipation channel (31) with the second heat dissipation cylinder (13) so that gas flows through the second heat dissipation channel (31). The heat dissipation cylinder assembly (10) is rotatably arranged relative to the third cylinder (30).

2. The heat dissipation device according to claim 1, characterized in that, The first heat dissipation channel has a first inlet (123) and a first outlet (124) arranged sequentially along the axial direction of the second heat dissipation cylinder (13); the first heat dissipation channel includes a first channel section (125), and the flow cross-sectional area of ​​the first channel section (125) gradually decreases in the direction from the first inlet (123) to the first outlet (124).

3. The heat dissipation device according to claim 2, characterized in that, In the direction from the first inlet (123) to the first outlet (124), the first channel segment (125) has a first end and a second end arranged sequentially, wherein, The first heat dissipation channel further includes a second channel segment (126), one end of which is connected to the second end of the first channel segment (125), and the other end of the second channel segment (126) forms the first outlet (124); the flow cross-sectional area of ​​the second channel segment (126) gradually increases in the direction from the first inlet (123) to the first outlet (124).

4. The heat dissipation device according to claim 2, characterized in that, In the direction from the first inlet (123) to the first outlet (124), the first channel segment (125) has a first end and a second end arranged sequentially, wherein, The first heat dissipation channel further includes a third channel segment (127), one end of which is connected to the first end of the first channel segment (125), and the other end of which forms the first inlet (123); the cross-sectional area of ​​the third channel segment (127) is equal in the direction from the first inlet (123) to the first outlet (124).

5. The heat dissipation device according to claim 2, characterized in that, The second heat dissipation cylinder (13) includes a first cylinder section (135), a second cylinder section (136) and a third cylinder section (137) connected sequentially in the direction from the first inlet (123) to the first outlet (124). In the direction from the first inlet (123) to the first outlet (124), the diameter of the first cylindrical section (135) is equal, the diameter of the second cylindrical section (136) gradually decreases, and the diameter of the third cylindrical section (137) gradually increases.

6. The heat dissipation device according to any one of claims 1 to 5, characterized in that, The heat dissipation component (11) includes a plurality of heat dissipation elements (111), which are spaced apart along the circumferential direction of the first heat dissipation cylinder (12); and / or, The heat dissipation device includes a plurality of heat dissipation components (11), which are spaced apart along the axial direction of the first heat dissipation cylinder (12); and / or, The fourth cavity extends along a preset trajectory, which is one of a straight line, a spiral, or an S-shaped line.

7. The heat dissipation device according to any one of claims 1 to 5, characterized in that, The first end of each of the heat sinks (111) is connected to the first heat sink (12), and the second end of each of the heat sinks (111) is connected to the second heat sink (13); the heat dissipation device also includes a drive (40), which is drivenly connected to the first heat sink (12) so that the drive (40) drives the heat sink assembly (10) to rotate.

8. The heat dissipation device according to claim 1, characterized in that, The heat dissipation device further includes a liquid collection device (50), which has a liquid collection chamber (51) and a coolant outlet (2) connected to the liquid collection chamber (51). A third connecting port (133) is located inside the liquid collection chamber (51). The heat dissipation cylinder assembly (10) is rotatably disposed relative to the liquid collection device (50). The heat dissipation device further includes a sealing device (60), which is disposed between the liquid collecting device (50) and the second heat dissipation cylinder (13) to seal the liquid collecting device (50) and the second heat dissipation cylinder (13); and / or, The heat dissipation device also includes a bearing (70), which is sleeved on the second heat dissipation cylinder (13) and located between the second heat dissipation cylinder (13) and the liquid collection device (50).

9. An engine, characterized in that, It includes the heat dissipation device according to any one of claims 1 to 8.

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