Cooling fin structure and electrical oil heater

Abstract

The utility model provides a radiating fin structure and an electrical oil heater, the radiating fin structure comprises a plurality of first radiating fin assemblies and a plurality of second radiating fin assemblies, the first radiating fin assemblies and the second radiating fin assemblies are internally provided with oil path channels, and the first radiating fin assemblies and the second radiating fin assemblies are alternately stacked. A gap between the first cooling fin assembly and the second cooling fin assembly forms an air exchange area, and the edge of the first cooling fin assembly or the second cooling fin assembly is provided with a circle of heat conduction fins. Through the design that the heat conducting fins are arranged at intervals, an air exchange area is enlarged, uniform temperature distribution of the heat dissipation structure is ensured, and formation of surface overheat points is reduced. Due to the fact that the first cooling fin assembly with the high temperature is not provided with the cooling fins, the surface temperature can be fully increased, the temperature of a heat source can be increased, the first cooling fin assembly is clamped between the two second cooling fin assemblies with the cooling fins and located in the non-touchable area, and the risk that a user is scalded is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heaters, in particular to a heat sink structure and an electric oil heater. Background Art

[0002] Oil-filled Radiator, also known as oil radiator or electric oil furnace, is a common household electric heater. It heats the internal enclosed thermal oil through electric heating elements, and uses the thermal oil to transfer heat to the external heat sink, thereby heating the surrounding environment. The core component of the existing oil-filled radiator is the oil-filled radiator body, which is mainly composed of several heat sink assemblies, electric heating tube assemblies, sealing components and thermal oil. Among them, the structural design of the heat sink assembly plays a vital role in the overall performance of the oil-filled radiator. Usually, the heat sink assembly is composed of two independent sheet-like heat sinks that are bonded to each other. This design aims to improve the heat dissipation efficiency and the overall heating effect.

[0003] However, in actual use, the design of existing heat sink assemblies has some significant defects. First, the temperature uniformity of the heat sink assembly during operation is poor. This means that the temperature distribution of different areas of the heat sink is uneven, causing some areas to overheat while other areas are relatively cool. Secondly, due to the heat between the heat sinks, the heat is difficult to dissipate effectively, further exacerbating the temperature unevenness phenomenon.

[0004] In particular, the peripheral temperature of the upper area of ​​the heat sink assembly tends to rise rapidly and easily exceeds the specified safety limit range. This not only increases the risk of burns to users when touching the oil heater, but also inevitably affects the heating effect of the heat sink assembly when trying to reduce the temperature through control measures. Control measures such as reducing the heating power can alleviate the problem of excessive surface temperature of the heat sink to a certain extent, but will directly lead to a decrease in the overall heating capacity of the oil heater, which cannot meet the heating needs of users.

[0005] Therefore, how to improve the design of the existing heat sink assembly so that it can evenly dissipate heat and ensure user safety while maintaining efficient heating performance has become a key issue in the development of electric oil heater technology. Utility Model Content

[0006] In order to solve the technical problem of poor temperature uniformity of the heat sink assembly of the electric oil heater in the prior art, the utility model provides a heat sink structure and an electric oil heater.

[0007] The technical solution adopted by the utility model is:

[0008] The utility model proposes a heat sink structure, comprising: a plurality of first heat sink assemblies and a plurality of second heat sink assemblies, wherein the first heat sink assemblies and the second heat sink assemblies are provided with oil passages inside, the first heat sink assemblies and the second heat sink assemblies are alternately stacked, the gap between the first heat sink assemblies and the second heat sink assemblies forms an air exchange area, and a circle of heat-conducting fins is provided on the edge of the first heat sink assembly or the second heat sink assembly.

[0009] Furthermore, both sides of the first heat sink assembly and the second heat sink assembly are protruding near both ends and are respectively provided with oil passage holes, and the adjacent sides of the first heat sink assembly and the second heat sink assembly are fitted together near the protruding positions at both ends, so that the oil passages of multiple first heat sink assemblies and multiple second heat sink assemblies intersect and penetrate.

[0010] Specifically, the first heat sink assembly and the second heat sink assembly each include two heat sinks that are bonded and spliced ​​to form a cavity.

[0011] Furthermore, a plurality of convex strips are provided between the two ends of the two heat sinks to form oil passages, and positions near the two ends protrude outward to form oil cavities, and oil passage holes are provided at the positions of the oil cavities.

[0012] Furthermore, the second heat sink assembly specifically includes: a second heat sink sub-sheet and a second heat sink mother sheet which are fitted and sealed to form a cavity, and the heat conducting fins are arranged on the edge of the second heat sink mother sheet.

[0013] Furthermore, the first heat sink assembly specifically includes: two first heat sinks that are fitted together and sealed to form a cavity.

[0014] Furthermore, the edges of the heat conducting fins are bent.

[0015] Furthermore, the two heat sink assemblies located on the outermost sides are heat sink assemblies having the thermal conductive fins.

[0016] Furthermore, a heating element is provided through the oil cavity at one end of the first heat sink assembly and the second heat sink assembly.

[0017] The utility model also provides an electric oil heater, comprising the above-mentioned heat sink structure.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The design of setting the heat-conducting fins at intervals increases the air exchange area, ensures the uniform temperature distribution of the heat dissipation structure, and reduces the formation of hot spots on the surface. The first heat sink assembly with a higher temperature can fully increase the surface temperature because it has no heat dissipation fins, thereby increasing the temperature of the heat source. In addition, the first heat sink assembly is sandwiched between two second heat sink assemblies with heat dissipation fins and is in an untouchable area, reducing the risk of burns to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a side view of an embodiment of the utility model;

[0022] Figure 2 It is a top view of an embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the structure in which the first heat sink assembly and the second heat sink assembly are stacked in an embodiment of the utility model;

[0024] Figure 4 It is a side view of the stacked first heat sink assembly and the second heat sink assembly in the embodiment of the utility model;

[0025] Figure 5 A side view of a first heat sink assembly in an embodiment of the utility model;

[0026] Figure 6 An exploded view of the first heat sink assembly in the embodiment of the utility model;

[0027] Figure 7 A side view of the second heat sink assembly in the embodiment of the utility model;

[0028] Figure 8 An exploded view of the second heat sink assembly in the embodiment of the utility model;

[0029] 1. A first heat sink assembly;

[0030] 11. A first heat sink;

[0031] 2. A second heat sink assembly;

[0032] 21. a second heat sink; 22. a second heat sink mother plate;

[0033] 31. Air exchange area; 32. Heat conduction area; 33. Heat dissipation area;

[0034] 4. Thermal fins. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] The principle and structure of the present utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0037] The core component of the oil heater is the oil heater body, which is mainly composed of several heat sink assemblies, electric heating tube assemblies, sealing components and thermal oil. Usually, the heat sink assembly is composed of two independent sheet-shaped heat sinks that are bonded to each other. In actual use, the design of the existing heat sink assembly has some significant defects. First, the temperature uniformity of the heat sink assembly is poor during operation. This means that the temperature distribution of different areas of the heat sink is uneven, resulting in overheating in some areas and relatively low temperatures in other areas. Secondly, due to the mutual influence of heat between the heat sinks, the heat is difficult to dissipate effectively, further aggravating the temperature unevenness. The peripheral temperature of the upper area of ​​the heat sink assembly tends to rise rapidly and easily exceeds the specified safety limit range. This not only increases the risk of burns when users touch the oil heater, but also inevitably affects the heating effect of the heat sink assembly when trying to reduce the temperature through control measures. Control measures such as reducing the heating power can alleviate the problem of excessive surface temperature of the heat sink to a certain extent, but will directly lead to a decrease in the overall heating capacity of the oil heater, which cannot meet the heating needs of users.

[0038] In this regard, Figures 1 to 4As shown, the utility model proposes a heat sink structure, which can be applied to electric oil radiators, specifically including a plurality of first heat sink assemblies 1 and a plurality of second heat sink assemblies 2. Each heat sink assembly is provided with an oil channel inside, which is used to conduct internal heat, called a heat transfer zone 32, and can effectively transfer heat to the heat sink assembly. The first heat sink assembly 1 and the second heat sink assembly 2 are alternately stacked, and the oil channels inside them are interconnected, ensuring that the heat transfer oil flows freely in the entire structure, thereby evenly distributing heat. At the same time, there is a gap between the first heat sink assembly 1 and the second heat sink assembly 2 to form an air exchange zone. The edge of the first heat sink assembly or the second heat sink assembly is provided with a heat conduction fin 4, for example, a circle of heat conduction fins 4 is provided on the edge of the second heat sink assembly. The heat conduction fins 4 increase the surface area of ​​the heat sink assembly, forming a heat dissipation zone 33 of the heat sink assembly, further increasing the area of ​​the air exchange zone 31, thereby further improving the heat dissipation effect. Hot air can flow between the heat sink assemblies, enhancing the air convection effect, thereby improving the heat dissipation performance.

[0039] Since two second heat sink assemblies 2 with heat dissipation fins are stacked on both sides of each first heat sink assembly 1, this stacking method forms a larger air exchange area 31 in the area between the two second heat sink assemblies. The large air heat exchange area can effectively increase the convection gap between the air and the heat sink assembly, enhance air fluidity and heat exchange efficiency. Through this design, the heat of the thermal oil inside the heat sink assembly can be quickly exchanged with the external cold air through the air exchange area 31, which speeds up the heat dissipation speed of the electric oil heater.

[0040] The optimized air flow path and heat conducting fin design ensure uniform temperature distribution and reduce the formation of hot spots on the surface. The first heat sink assembly with a higher temperature can fully increase the surface temperature due to the lack of heat dissipation fins, thereby increasing the temperature of the heat source. In addition, the first heat sink assembly is sandwiched between two second heat sink assemblies with heat dissipation fins and is in an untouchable area, reducing the risk of burns to users.

[0041] like Figure 4 , 6 As shown in FIG. 8 , two oil passage holes are provided on two opposite sides of the heat sink assembly (including the first heat sink assembly 1 and the second heat sink assembly 2), and these through holes are respectively located near the upper end and the lower end of the heat sink assembly.

[0042] Since the first heat sink assembly 1 and the second heat sink assembly 2 are alternately stacked, the side of the first heat sink assembly 1 is attached to the side of the second heat sink assembly 2 and sealed and fixed. The oil passage hole on the side of the first heat sink assembly 1 is directly opposite to the oil passage hole on the side of the second heat sink assembly 2, so that the oil passages of the alternately stacked first heat sink assembly 1 and the second heat sink assembly 2 can intersect and penetrate. Such a design ensures that the heat transfer oil can flow continuously and evenly through each heat sink assembly, thereby improving the overall heat dissipation efficiency and uniformity of heat distribution.

[0043] This optimized structural design not only enhances the heat conduction efficiency between the heat sink components, but also ensures the uniform distribution of heat inside the heat sink components, effectively preventing the occurrence of local overheating. At the same time, this through-hole design combined with the alternating stacking method makes the flow of thermal oil smoother, reduces flow resistance and heat loss, and further improves the heat dissipation performance and heating effect of the electric oil heater.

[0044] In a specific embodiment, the first heat sink assembly 1 and the second heat sink assembly 2 each include two heat sinks that are joined together to form a cavity. Each heat sink is provided with two oil passage holes, which are located at the upper and lower ends of the heat sink (the heat sink is in the shape of a long strip).

[0045] That is, each heat sink assembly is formed by two heat sinks that are sealed together to form its internal cavity, and its overall structure is simple and reliable.

[0046] Specifically, a plurality of convex humps are provided between the two ends of the two heat sinks to form oil channels, specifically two convex humps, so that the heat transfer oil can diffuse upward from the bottom of the cavity, and the positions near the two ends of the heat sink protrude outward to form oil-enclosed cavities, and oil channel through holes are provided at the protruding positions, that is, when the first heat sink assembly and the second heat sink assembly are alternately stacked, the protruding positions at both ends, i.e., the oil-enclosed cavities, are close to each other, so that the oil channel through holes of all the heat sink assemblies are directly opposite and overlapped (at the same time, the positions surrounding the oil channel through holes are sealed and connected to prevent leakage of the heat transfer oil), and the internal oil channels intersect and penetrate.

[0047] The oil-packed cavities at both ends are connected to the oil channel in the middle to form a whole cavity. After the heating body heats the heat-conducting oil in the oil-packed cavity at the bottom, it will diffuse and flow upward along the oil channel while transferring heat. The heat-conducting oil with a lower temperature will flow back to the bottom and be reheated, thus forming a circulation. All cavities are connected through the oil-packed cavities, so that the oil channels of the entire heat dissipation structure are intersected and connected, and the temperature is balanced.

[0048] In a specific embodiment, a circle of heat-conducting fins may be provided at the edge of the first heat sink assembly, or a circle of heat-conducting fins 4 may be provided at the edge of the second heat sink assembly. The following embodiments specifically take the second heat sink assembly as an example:

[0049] like Figure 7 , 8 As shown, the second heat sink assembly specifically includes: a second heat sink 21 and a second heat sink 22. Both the second heat sink 21 and the second heat sink 22 are in the form of long strips, and the outline of the second heat sink 22 is larger than the second heat sink 21. Parts of the second heat sink 21 and the second heat sink 22 are convex to the opposite side. When the edge of the second heat sink 21 is sealed with the second heat sink 22, a cavity is formed between the two for the circulation of heat transfer oil, thereby forming a heat transfer area 32. A circle of heat transfer fins 4 are also provided at the edge of the second heat sink 22, and these fins can effectively dissipate the heat of the heat transfer area 32.

[0050] The second heat sink 21 of the second heat sink assembly is used in conjunction with the second heat sink 22, so that after their edges are sealed and fitted, a cavity for the circulation of heat transfer oil is formed, thereby ensuring that the heat transfer oil can efficiently flow inside the heat sink and transfer heat. The heat transfer fins 4 on the second heat sink 22 further enhance the heat dissipation effect, allowing the heat to be quickly dissipated to the external environment.

[0051] like Figure 5 , 6 As shown, the first heat sink specifically includes: two first heat sink fins 11, the shape of the first heat sink fins 11 is basically consistent with the shape of the second heat sink fin 21, a portion of the first heat sink fin 11 protrudes outward to the opposite side, and the edges of the two first heat sink fins 11 are sealed and fitted (a circle of connecting edges is provided at the edges, and the second heat sink fin 22 specifically extends and expands this circle of connecting edges to form heat-conducting fins 4), so that a cavity is formed between the two first heat sink fins 11, which is used to circulate heat-conducting oil to form a heat-conducting area 32.

[0052] The first heat sink assembly forms a cavity for the circulation of heat transfer oil by sealing and fitting the edges of the two first heat sinks 11. The heat sink assembly designed in this way has a simple structure, which not only improves the overall heat dissipation efficiency, but also ensures the uniform flow of heat transfer oil inside, thereby preventing local overheating and improving the safety and heating effect of the electric oil heater.

[0053] In a specific embodiment, the edges of the heat conducting fins 4 are bent.

[0054] This bending design further increases the surface area of ​​the heat dissipation fins, thereby enhancing the heat dissipation effect. Specifically, when the connecting edge at the edge of the second heat dissipation mother plate 22 is extended to form the heat conducting fins 4, the edges of the fins are bent, which can dissipate heat more effectively.

[0055] In addition, the bent heat-conducting fins 4 can improve air circulation efficiency and promote rapid heat dissipation. The bent fin edges can also increase the strength and stability of the structure and prevent the fins from being deformed or damaged during long-term high-temperature use.

[0056] Furthermore, the two heat sink assemblies located on the outermost sides of the stack are heat sink assemblies having heat conducting fins 4, namely, second heat sink assemblies, and the heat conducting fins 4 of the two second heat sink assemblies are bent inward.

[0057] The outermost part needs to be a heat sink assembly with thermal fins 4 to prevent users from directly touching the heat sink assembly without thermal fins, so that the heat sink assembly without thermal fins is always sandwiched in the middle position, and the thermal fins 4 of the two second heat sink assemblies on the outer side are bent inward, which can effectively guide the air flow, so that the cold air can more fully contact the surface of the heat sink assembly, promoting the transfer and dissipation of heat. The bent thermal fins 4 on the inner side not only increase the surface area of ​​the heat sink assembly, but also form multiple efficient air circulation channels in the air exchange area 31. These channels help to enhance air convection and accelerate the process of heat transfer from the thermal oil to the heat sink surface and then dissipating to the surrounding air.

[0058] In a specific embodiment, the first heat sink assembly and the second heat sink assembly are alternately stacked, and the oil passage holes at the lower ends thereof are also sequentially opposite and connected, and the heating element sequentially passes through the oil passage holes at the lower ends of the first heat sink assembly and the second heat sink assembly (i.e., through the oil bag cavity), heating the heat transfer oil inside each heat sink assembly, so that the heat of the heating element can be evenly transferred to each heat sink assembly. The temperature of the entire heat sink structure is evenly distributed, and the heat of each air exchange area 31 is evenly distributed through the heat dissipation fins, and the heat is dissipated through air flow.

[0059] The utility model also provides an electric oil heater, comprising: the above-mentioned heat sink structure and heating element, a sealing component and heat transfer oil. The sealing component is mainly used to seal the heat sink structure, which is relatively common in the prior art and will not be described in detail.

[0060] The oil heater has an optimized heat dissipation structure design, which not only enhances the heat conduction efficiency between the heat sink components, but also ensures the uniform distribution of heat inside the heat sink components, effectively preventing the occurrence of local overheating. At the same time, by alternately stacking, users are prevented from touching the heat sink components with higher temperatures and no heat dissipation fins, thus avoiding burns. The heat sink components with heat dissipation fins can improve the heat dissipation effect, thereby further increasing the temperature of the heating element, i.e., the heat source.

[0061] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0062] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0063] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0064] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0065] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model. The above is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A heat sink structure, characterized in that: include: Multiple first heat sink assemblies and multiple second heat sink assemblies, the first heat sink assemblies and the second heat sink assemblies are provided with oil passages inside, the first heat sink assemblies and the second heat sink assemblies are alternately stacked, the gaps between the first heat sink assemblies and the second heat sink assemblies form air exchange areas, and a circle of heat-conducting fins is provided on the edge of the first heat sink assembly or the second heat sink assembly.

2. The heat sink structure according to claim 1, characterized in that: The two sides of the first heat sink assembly and the second heat sink assembly are protruding near the two ends and are respectively provided with oil passage holes. The adjacent sides of the first heat sink assembly and the second heat sink assembly are fitted together near the protruding positions at the two ends, so that the oil passages of multiple first heat sink assemblies and multiple second heat sink assemblies intersect and penetrate.

3. The heat sink structure according to claim 1, characterized in that: The first heat sink assembly and the second heat sink assembly each include two heat sinks that are sealed to form a cavity.

4. The heat sink structure according to claim 3, characterized in that: A plurality of convex strips are provided between the two ends of the two heat sinks to form an oil passage, and the positions near the two ends protrude outwards to form an oil cavity, and an oil passage through hole is provided at the position of the oil cavity.

5. The heat sink structure according to claim 1, characterized in that: The second heat sink assembly specifically includes: a second heat sink sub-sheet and a second heat sink mother sheet which are sealed to form a cavity inside, and the heat conducting fins are arranged on the edge of the second heat sink mother sheet.

6. The heat sink structure according to claim 1, characterized in that: The first heat sink assembly specifically includes: two first heat sinks that are fitted and sealed to form a cavity.

7. The heat sink structure according to claim 1, characterized in that: The edges of the heat conducting fins are bent.

8. The heat sink structure according to claim 1, characterized in that: The two heat sink assemblies located on the outermost sides are heat sink assemblies having the heat conducting fins.

9. The heat sink structure according to claim 4, characterized in that: A heating element is provided through the oil cavity at one end of the first heat sink assembly and the second heat sink assembly.

10. An electric oil heater, characterized in that: The heat sink structure comprises the heat sink structure as claimed in any one of claims 1 to 9.

Images