Cooling fin, cooling fin assembly and oil heater body
By designing the upper oil bag, lower oil bag and transfer oil chamber in the heat sink for electric heating oil, and connecting multiple oil channels, the temperature imbalance caused by the heat sink structure is solved, and the heating effect is significantly improved.
Patent Information
- Application Number
- CN202421926604.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The existing heat sink structure of electric heating oil tin leads to uneven temperature on the outer surface, limiting the heating effect, especially when the temperature cannot be higher than 85K.
A heat sink is designed, including an oil-up bag, an oil-up bag and a transfer oil chamber, which is connected to the oil-up bag through m first oil passages and n second oil passages are connected to the oil-up bag, which increases the flow path of thermally conductive oil and improves temperature uniformity.
By increasing the flow path of thermally conductive oil, the uniformity of the thermally conductive oil transfer temperature is improved, thereby improving the heating effect of the product.
Smart Images
Figure CN222887413U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heating equipment, and particularly relates to a heat sink, a heat sink assembly and an oil-filled radiator body. Background Art
[0002] The electric oil-filled radiator, also called an oil-filled electric heater, is a common electric heater. The oil-filled electric heater includes a plurality of heat sink structures, and there are upper and lower connected oil bag channels between the heat sink structures. The heat sink has an upper oil bag and a lower oil bag, and the two oil bags are connected through a plurality of passages. The lower oil bag is provided with a heating pipe. When the heating pipe is powered on, the heat-conducting oil is heated, and the heat-conducting oil boils and flows upward, so as to realize heat transfer from bottom to top, and then transfer the heat to the surrounding environment.
[0003] However, due to the structural design of the heat sink, the temperatures at various positions on the outer surface of the existing electric oil-filled radiator are not balanced. Under the limitation that the outer surface temperature cannot be higher than 85K, many oil-filled radiators are limited in heat generation, resulting in an unclear heating effect. Summary of the Utility Model
[0004] The utility model provides a heat sink, a heat sink assembly and an oil-filled radiator body, aiming to solve the problem that the existing heat sink structure cannot be heated evenly.
[0005] An embodiment of the utility model provides a heat sink, including:
[0006] A heat sink body;
[0007] An upper oil bag, arranged at the upper end of the heat sink body;
[0008] A lower oil bag, arranged at the lower end of the heat sink body;
[0009] A transfer oil cavity, arranged on the heat sink body and located between the upper oil bag and the lower oil bag. The transfer oil cavity is communicated with the lower oil bag through m first oil paths, and the transfer oil cavity is communicated with the upper oil bag through n second oil paths, where m, n ≥ 1.
[0010] Specifically, the length of a single first oil path is less than the length of a single second oil path.
[0011] Specifically, a single first oil path is a straight oil path.
[0012] Specifically, a single second oil path is a curved oil path.
[0013] Specifically, the cross-sectional area of a single first oil path is larger than the cross-sectional area of a single second oil path.
[0014] Specifically, diversion grooves are provided at the upper and lower edges of the heat sink body.
[0015] Specifically, m = 1 and n > 1.
[0016] An embodiment of the present utility model further provides a fin assembly, including a plurality of fins as described above. Adjacent fins are connected to each other, the lower oil pockets of adjacent fins are communicated in sequence, and the upper oil pockets of adjacent fins are communicated in sequence.
[0017] Specifically, the transfer oil cavities of adjacent fins are not communicated.
[0018] An embodiment of the present utility model further provides an oil-filled radiator body, including the fin assembly as described above.
[0019] An embodiment of the present utility model provides a fin, a fin assembly and an oil-filled radiator body. By respectively arranging the upper oil pocket and the lower oil pocket at the upper end and the lower end of the fin body, and adding a transfer oil cavity between the upper oil pocket and the lower oil pocket, and communicating with the lower oil pocket through m first oil paths and communicating with the upper oil pocket through n second oil paths, the boiling heat-conducting oil can be stabilized in flow, the flow path of the heat-conducting oil is increased, compared with the traditional oil path design, the uniformity of the temperature transferred by the heat-conducting oil is improved, and thus the heating effect of the product is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0021] Figure 1 It is a schematic structural diagram of the fin provided by the embodiment of the present utility model;
[0022] Figure 2 It is another schematic structural diagram of the fin provided by the embodiment of the present utility model;
[0023] Figure 3 It is a schematic length diagram of the first oil path and the second oil path provided by the embodiment of the present utility model;
[0024] Figure 4 It is a schematic cross-sectional diagram of the first oil path and the second oil path provided by the embodiment of the present utility model;
[0025] Figure 5 It is a top view of the fin assembly provided by the embodiment of the present utility model;
[0026] Figure 6 It is a schematic structural diagram of the fin assembly provided by the embodiment of the present utility model;
[0027] Figure 7Schematic cross-sectional view of the heat sink assembly provided by the embodiment of the present utility model.
[0028] Explanation of the markings in the figure:
[0029] 1. Heat sink body; 11. Flow guide groove; 2. Upper oil pocket; 3. Lower oil pocket; 4. Transfer oil cavity; 5. First oil path; 6. Second oil path; 7. Upper oil pocket channel; 8. Lower oil pocket channel. Detailed implementation manners
[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0031] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprise" indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their combinations.
[0032] It should also be understood that the terms used in this specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in this specification of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.
[0033] It should be further understood that the term " / and" as used in this specification of the present utility model and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.
[0034] Please refer to Figure 1 and Figure 2 , the embodiment of the present utility model provides a heat sink, including:
[0035] Heat sink body 1;
[0036] Upper oil pocket 2, provided at the upper end of the heat sink body 1;
[0037] Lower oil pocket 3, provided at the lower end of the heat sink body 1;
[0038] The transfer oil chamber 4 is arranged on the radiator body 1 and is located between the upper oil chamber 2 and the lower oil chamber 3. The transfer oil chamber 4 is communicated with the lower oil chamber 3 through m first oil passages 5, and the transfer oil chamber 4 is communicated with the upper oil chamber 2 through n second oil passages 6, where m and n are both ≥ 1.
[0039] In this embodiment, the heat-conducting oil is put into the lower oil chamber 3, and a heating device is installed in the lower oil chamber 3. The heat-conducting oil is heated by the heating device. After the heat-conducting oil boils in the lower oil chamber 3, it enters the transfer oil chamber 4 through the first oil passage 5, and undergoes a steady-flow circulation in the space of the transfer oil chamber 4, then flows into the second oil passage 6, thus reaching the upper oil chamber 2, and then flowing back to the lower oil chamber 3 from the upper oil chamber 2 through the second oil passage 6, the transfer oil chamber 4 and the first oil passage 5 in a reciprocating cycle. Since the upper oil chamber 2 and the lower oil chamber 3 are arranged at the upper and lower ends of the radiator body 1, when the heat-conducting oil flows reciprocally between the lower oil chamber 3 and the upper oil chamber 2, it transfers heat to various positions of the radiator, making the radiator evenly heated. Moreover, the transfer oil chamber 4 is communicated with the lower oil chamber 3 through m first oil passages 5, and the transfer oil chamber 4 is communicated with the upper oil chamber 2 through n second oil passages 6, which increases the flow path of the heat-conducting oil, thereby improving the heat conduction efficiency and making the heat conduction at various positions of the radiator uniform. Among them, the number of the first oil passage 5 and the second oil passage 6 can be set according to specific situations to meet the heat dissipation requirements under different powers, heat outputs and space limitations, so as to better control the temperature distribution of the radiator and maintain the stability and efficiency of the radiator body 1.
[0040] In this embodiment, by adding a transfer oil chamber 4 between the upper oil chamber 2 and the lower oil chamber 3, and communicating it with the lower oil chamber 3 through the first oil passage 5 and with the upper oil chamber 2 through the second oil passage 6, the flow rate of the heat-conducting oil is adjusted. Compared with the traditional oil passage design, the uniformity of the temperature transferred by the heat-conducting oil is improved, thereby enhancing the heating effect of the product.
[0041] Specifically, as Figure 2 and Figure 3 shown, the length of a single first oil passage 5 is less than the length of a single second oil passage 6.
[0042] In this embodiment, the length D1 of a single first oil passage 5 is less than the length D2 of a single second oil passage 6. That is to say, the position of the transfer oil chamber 4 is closer to the lower oil chamber 3, enabling the heat-conducting oil to flow into the radiator interior more quickly from the lower oil chamber 3, ensuring that the heat-conducting oil quickly covers the surface of the radiator, making the heat transfer more uniform, and helping to avoid problems such as local overheating or insufficient cooling. Moreover, the shorter first oil passage 5 can reduce the flow resistance of the heat-conducting oil before it enters the radiator, contributing to improving the heat dissipation efficiency.
[0043] Specifically, as Figure 1 and Figure 2 shown, a single first oil passage 5 is a straight oil passage.
[0044] In this embodiment, the heat transfer oil is heated in the lower oil pocket 3. To reduce the resistance of the heat transfer oil during the flow process, it is preferred that the single first oil passage 5 is a straight oil passage, which can enable the heat transfer oil to quickly flow into the transfer oil cavity 4, enabling the heat sink to quickly absorb and carry away heat, effectively improving the heat dissipation efficiency. Moreover, the straight design reduces the risk of heat transfer oil leakage, improves the reliability and stability of the entire flow process, and the design of the straight oil passage helps to save design and installation time, reduce manufacturing costs, and is easier to clean and maintain in case of blockage of the straight oil passage.
[0045] Specifically, as Figure 1 and Figure 2 shown, the single second oil passage 6 is a curved oil passage.
[0046] In this embodiment, since the transfer oil cavity 4 is relatively far from the upper oil pocket 2, the process of the heat transfer oil flowing from the transfer oil cavity 4 into the upper oil pocket 2 through the second oil passage 6 is relatively long. If the second oil passage 6 is set as a straight oil passage, the temperature at the position of the heat sink body 1 close to the second oil passage 6 is relatively high, and the temperature at the position of the heat sink body 1 far from the second oil passage 6 is relatively low, resulting in uneven temperature distribution. Therefore, it is preferred to set the second oil passage 6 as a curved oil passage, so that the flow path and range of the second oil passage 6 are increased, and the heat transfer oil can contact the surfaces of more heat sinks during the flow, improving the heat transfer efficiency. Moreover, while increasing the flow path length of the heat transfer oil, the curved oil passage can also reduce the flow rate and pressure change of the heat transfer oil, avoid uneven cooling of each position of the heat sink caused by too fast flow, and reduce the vibration and noise problems that may occur during the flow process, improving the comfort and stability of the entire process. In some embodiments, the shape of the curved oil passage can be a wavy oil passage, a zigzag oil passage, or a stepped oil passage.
[0047] Specifically, as Figure 4 shown, the cross-sectional area of the single first oil passage 5 is larger than the cross-sectional area of the single second oil passage 6.
[0048] In this embodiment, since the first oil passage 5 is connected to the lower oil pocket 3 and there is heat transfer oil in the lower oil pocket 3, to ensure that the heat transfer oil can flow out of the lower oil pocket 3 faster, it is preferred to set the cross-sectional area of the first oil passage 5 to be larger, effectively avoiding the problem that heat accumulation in the lower oil pocket 3 causes a decrease in the performance or damage of the heat sink, while the cross-sectional area of the second oil passage 6 is set to be smaller, reducing the flow rate of the heat transfer oil and avoiding the problem of uneven cooling of each position of the heat sink caused by too fast flow. In this embodiment, by setting two oil passages with different cross-sectional areas, combined with the straight design of the first oil passage 5 and the curved design of the second oil passage 6, the control area of the heat transfer oil basin is increased, the heat dissipation area is expanded, and thus the reliability and stability of the heat sink operation are improved. Moreover, for the case of long-term high-load operation, this design can effectively extend the life of the heat sink.
[0049] Specifically, such as Figure 1 and Figure 2 As shown in , the upper edge and the lower edge of the heat sink body 1 are both provided with guide grooves 11.
[0050] In this embodiment, the heat sink body 1 includes a bottom plate and a fence member arranged around the bottom plate, the fence member is higher than the bottom plate in the thickness direction, the upper oil bag 2, the lower oil bag 3, the transfer oil chamber 4, the first oil circuit 5 and the second oil circuit 6 are all arranged on the bottom plate. When the heat transfer oil circulates, the temperature of the bottom plate is high, and since the fence member surrounds the bottom plate, the heat dissipation is slow. Therefore, in order to increase the up and down convection of air so that the heat sink can accelerate the heat dissipation, it is preferred to set a guide groove 11 on the upper edge and the lower edge of the heat sink body 1, that is, set on the upper edge and the lower edge of the fence member, and the bottom of the guide groove 11 is a plane and slightly higher than the bottom plate or flush with the bottom plate (such as Figure 5 shown), so that air can flow from the guide groove 11 into the bottom plate, and then guide the air to flow through the entire surface of the heat sink, ensuring that the heat can be effectively dissipated into the air, improving the heat dissipation efficiency, and solving the problem of the heat sink surface being too hot. Through the design of the guide groove 11, this embodiment can reduce the local accumulation of heat on the surface of the heat sink, avoid overheating at a certain location, and thus improve the overall heat dissipation uniformity.
[0051] In other embodiments, guide grooves 11 can also be provided at both the left and right ends of the heat sink body 1. The guide grooves 11 at the left and right ends cooperate with the guide grooves 11 at the upper and lower ends to allow more air to flow through the surface of the heat sink, thereby accelerating the heat dissipation efficiency. Alternatively, the bottom of the guide groove 11 is set to be inclined and tilted toward one end of the oil bag, that is, the guide groove 11 close to the upper oil bag 2 is inclined toward the upper oil bag 2, and the guide groove 11 close to the lower oil bag 3 is inclined toward the lower oil bag 3, so that air can flow through the surface of the heat sink more smoothly. This is for the guide grooves 11 at the upper and lower ends of the heat sink body 1. If the guide grooves 11 are provided at the left and right ends of the heat sink body 1, the guide grooves 11 are inclined toward the bottom plate. Alternatively, the fence member is directly set to an inclined structure, the fence member is inclined toward the bottom plate, and is inclined to a predetermined angle, so that air convection can also be achieved.
[0052] Specifically, m=1, n>1.
[0053] In this embodiment, since the distance between the intermediate oil chamber 4 and the lower oil pocket 3 is short, it is preferably to set one first oil passage 5 to connect the two, and the first oil passage 5 is a straight oil passage, so that the heat-conducting oil can quickly flow into the intermediate oil chamber. And because the distance between the intermediate oil chamber 4 and the upper oil pocket 2 is long, setting only one second oil passage 6 cannot ensure uniform temperature in the area where the heat-conducting oil flows through. Therefore, multiple second oil passages 6 can be set, and the second oil passage 6 is a curved oil passage, so that the multiple second oil passages 6 can increase the flow area of the heat-conducting oil, thereby increasing the heat dissipation area. In specific implementation, it is preferably to set 2 second oil passages, and the heat-conducting oil in the intermediate oil chamber 4 flows into the upper oil pocket 2 through 2 oil passages. The number of intermediate oil chambers 4 can be one, that is, the lower oil pocket 3 is connected to the intermediate oil chamber 4 through the first oil passage 5, and the intermediate oil chamber 4 is connected to the upper oil pocket 2 through 2 second oil passages 6.
[0054] In other embodiments, multiple intermediate oil chambers 4 are provided between the upper oil pocket 2 and the lower oil pocket 3. The multiple intermediate oil chambers 4 are arranged at intervals in the horizontal direction and are interconnected. And on the side of each intermediate oil chamber 4 close to the lower oil pocket 3, the lower oil pocket 3 is connected to the intermediate oil chamber 4 with the shortest straight-line distance through the first oil passage 5. The multiple intermediate oil chambers 4 and the upper oil pocket 2 are connected through multiple second oil passages 6. At this time, 2 second oil passages 6 can be set or multiple second oil passages 6 corresponding to the number of intermediate oil chambers 4 can be set. When 2 second oil passages 6 are set, one is arranged between the leftmost intermediate oil chamber 4 and the upper oil pocket 2, and the other is arranged between the rightmost intermediate oil chamber 4 and the upper oil pocket 2. When multiple second oil passages 6 are set, each second oil passage 6 is arranged between each intermediate oil chamber 4 and the upper oil pocket 2. Since the multiple intermediate oil chambers 4 are interconnected, the heat-conducting oil in the lower oil pocket 3 can flow in the multiple intermediate oil chambers 4 after flowing into the intermediate oil chamber 4, expanding the flow range, and finally flowing out from different second oil passages 6, which can also increase the flow path of the oil passage and improve the temperature uniformity of the electric oil radiator.
[0055] In other embodiments, multiple intermediate oil chambers 4 are provided between the upper oil pocket 2 and the lower oil pocket 3. The multiple intermediate oil chambers 4 are arranged at intervals in the horizontal direction but are not interconnected. And on the side of each intermediate oil chamber 4 close to the lower oil pocket 3, the lower oil pocket 3 is connected to the corresponding intermediate oil chamber 4 through multiple first oil passages 5. The multiple intermediate oil chambers 4 and the upper oil pocket 2 are connected through multiple second oil passages 6. Since there are multiple intermediate oil chambers 4 connected to the lower oil pocket 3, in this way, the heat-conducting oil in the lower oil pocket 3 can quickly flow into their respective intermediate oil chambers 4, and the use of multiple intermediate oil chambers 4 can increase the flow path of the oil passage and improve the temperature uniformity of the electric oil radiator.
[0056] In other embodiments, a plurality of intermediate oil cavities 4 are arranged at intervals in the vertical direction and communicate with each other. At this time, the first oil passage 5 can be one or more, and the second oil passage 6 can also be one or more. The adjacent intermediate oil cavities 4 can be connected through one or more intermediate oil passages. The intermediate oil passage can be a straight oil passage or a bent oil passage. Preferably, the intermediate oil passage close to the upper oil pocket 2 is set as a bent oil passage, and the intermediate oil passage close to the lower oil pocket 3 is set as a straight oil passage, so as to improve the flow rate of the heat transfer oil below and increase the flow path of the heat transfer oil above, and enhance the temperature uniformity of the electric oil radiator.
[0057] As Figure 6 and Figure 7 shown, an embodiment of the present invention also provides a heat sink assembly, including a plurality of heat sinks as described above. The adjacent heat sinks are connected to each other, and the lower oil pockets 3 of the adjacent heat sinks are connected in sequence, and the upper oil pockets 2 of the adjacent heat sinks are connected in sequence.
[0058] In this embodiment, a plurality of heat sinks are connected to each other by welding, and the lower oil pockets 3 of the adjacent heat sinks are connected in sequence to form a lower oil pocket passage 8, and the upper oil pockets 2 of the adjacent heat sinks are connected in sequence to form an upper oil pocket passage 7. The flow path of the heat transfer oil in the entire heat sink assembly is: the heat transfer oil flows from the lower oil pocket 3 into the intermediate oil cavity 4 through the first oil passage 5, then flows into the upper oil pocket 2 through the second oil passage 6, then flows into the adjacent heat sink through the upper oil pocket passage 7, flows back to the intermediate oil cavity through the second oil passage 6, and flows back to the lower oil pocket through the first oil passage 5, and then flows into the adjacent heat sink through the lower oil pocket passage 8, so as to realize circulation.
[0059] Specifically, as Figure 6 shown, the intermediate oil cavities 4 of the adjacent heat sinks are not connected.
[0060] In this embodiment, the intermediate oil cavities 4 between the adjacent heat sinks are not connected to each other, so that the heat transfer oil of a single piece operates independently and is not affected by the heat transfer oil of other heat sinks, minimizing the temperature imbalance caused by mutual influence.
[0061] An embodiment of the present invention also provides an oil radiator body, including the heat sink assembly as described above.
[0062] As mentioned above, the above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims
1. A heat sink, characterized in that: include: Heat sink body; An oil bag is arranged at the upper end of the heat sink body; A lower oil bag, arranged at the lower end of the heat sink body; The transfer oil chamber is arranged on the heat sink body and located between the upper oil bag and the lower oil bag. The transfer oil chamber is connected to the lower oil bag through m first oil passages, and the transfer oil chamber is connected to the upper oil bag through n second oil passages, and m and n are both ≥1.
2. The heat sink according to claim 1, characterized in that: The length of a single first oil passage is shorter than the length of a single second oil passage.
3. The heat sink according to claim 1, characterized in that: The single first oil passage is a straight oil passage.
4. The heat sink according to claim 1, characterized in that: The single second oil passage is a curved oil passage.
5. The heat sink according to claim 1, characterized in that: The cross-sectional area of a single first oil passage is greater than the cross-sectional area of a single second oil passage.
6. The heat sink according to claim 1, characterized in that: The upper edge and the lower edge of the heat sink body are both provided with guide grooves.
7. The heat sink according to claim 1, characterized in that: m=1,n>1.
8. A heat sink assembly, characterized in that: It comprises a plurality of heat sinks as described in any one of claims 1 to 7, wherein adjacent heat sinks are connected to each other, lower oil pockets of adjacent heat sinks are connected in sequence, and upper oil pockets of adjacent heat sinks are connected in sequence.
9. The heat sink assembly according to claim 8, characterized in that: The transfer oil chambers of adjacent heat sinks are not connected.
10. An oil filler body, characterized in that: Comprising a heat sink assembly as described in any one of claims 8-9.