CN212029698U - Heat sink assembly and electric oil heater - Google Patents

Abstract

The utility model provides a radiating fin component and an electric oil heater, wherein the radiating fin component comprises a first radiating fin and a second radiating fin which are mutually connected, an oil conveying channel is arranged between the first radiating fin and the second radiating fin, and the oil conveying channel is used for conveying heat-conducting oil; in the direction from bottom to top, the oil conveying channel comprises a lower channel, a middle channel and an upper channel which are communicated in sequence; the sectional area of the lower channel is larger than that of the middle channel, and the sectional area of the middle channel is smaller than that of the upper channel. In the scheme, the larger the position of the cross section area of the oil conveying channel is, the more heat conduction oil is contained, the larger the heat storage amount is, and the more heat is transferred. By adopting the scheme, the temperature of the upper part of the radiating fin component can be kept within a certain range, so that the requirement on heating performance is met, and the overhigh temperature of the upper part area of the radiating fin component is avoided.

Description

Heat sink assembly and electric oil heater

Technical Field

The utility model relates to an electric oil spit of fland technical field particularly, relates to a fin assembly and electric oil spit of fland.

Background

The core component of the existing electric oil heater is an oil heater body, and the oil heater body is composed of a plurality of radiating fin components, an electric heating tube component, a sealing component and heat-conducting oil. Wherein, the radiating fin component is formed by mutually attaching two radiating fins with independent sheet structures.

The conventional heat sink assembly has poor temperature uniformity in use, the peripheral temperature of the upper area of the heat sink assembly is increased too fast to exceed a specified limit range, hands are easy to scald, and the heating and warming effects of the heat sink assembly are affected if other control measures are taken.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fin subassembly and electric oil spit of fland to avoid the upper portion regional high temperature of fin subassembly, and guarantee the heating performance.

In order to achieve the above object, according to an aspect of the present invention, the present invention provides a heat sink assembly, including: the cooling structure comprises a first cooling fin and a second cooling fin which are connected with each other, wherein an oil conveying channel is arranged between the first cooling fin and the second cooling fin and is used for conveying heat conducting oil; in the direction from bottom to top, the oil conveying channel comprises a lower channel, a middle channel and an upper channel which are communicated in sequence; wherein the cross-sectional area of the lower passage is greater than the cross-sectional area of the middle passage, and the cross-sectional area of the middle passage is less than the cross-sectional area of the upper passage.

Further, the oil delivery passage comprises a plurality of oil passages arranged at intervals.

Further, in the direction from bottom to top, each oil path comprises a lower section, a middle section and an upper section which are communicated in sequence; the sum of the sectional areas of the lower sections of the plurality of oil paths of the oil delivery passage is the sectional area of the lower passage, the sum of the sectional areas of the middle sections of the plurality of oil paths of the oil delivery passage is the sectional area of the middle passage, and the sum of the sectional areas of the upper sections of the plurality of oil paths of the oil delivery passage is the sectional area of the upper passage.

Further, in each of the oil passages, a sectional area of the lower section is larger than a sectional area of the middle section, and the sectional area of the middle section is smaller than the sectional area of the upper section.

Further, the first heat sink has a recessed first raised platform, and the periphery of the second heat sink matches the periphery of the first raised platform.

Furthermore, a first positioning piece is arranged on the first heat dissipation piece, a second positioning piece is arranged on the second heat dissipation piece, and the second positioning piece is matched with the first positioning piece so as to position the first heat dissipation piece and the second heat dissipation piece.

Furthermore, one of the first positioning piece and the second positioning piece is a protruding structure, the other one of the first positioning piece and the second positioning piece is a groove structure, and the protruding structure is buckled with the groove structure.

Furthermore, first fin include the main part and with the heating panel of the peripheral connection of main part, the second fin with the main part is connected, oil delivery passageway is located between the main part and the second fin, have sunken second heavy platform on the heating panel.

Further, the periphery of the heat dissipation plate is provided with a flanging structure.

Further, the height of the heat sink assembly is L, the distance between the lower end of the upper channel and the upper end face of the heat sink assembly is L1, L1 is equal to or less than 1/4L, the distance between the upper end of the lower channel and the lower end face of the heat sink assembly is L2, and L2 is equal to or less than 1/2L.

Further, the oil delivery passage extends in a vertical direction.

According to another aspect of the present invention, there is provided an electric oil heater, comprising the above-mentioned heat sink assembly.

The technical scheme of the utility model is applied, a radiating fin component is provided, the radiating fin component comprises a first radiating fin and a second radiating fin which are connected with each other, an oil transportation channel is arranged between the first radiating fin and the second radiating fin, and the oil transportation channel is used for transporting heat conducting oil; in the direction from bottom to top, the oil conveying channel comprises a lower channel, a middle channel and an upper channel which are communicated in sequence; the sectional area of the lower channel is larger than that of the middle channel, and the sectional area of the middle channel is smaller than that of the upper channel. In the scheme, the larger the position of the cross section area of the oil conveying channel is, the more heat conduction oil is contained, the larger the heat storage amount is, and the more heat is transferred. When the radiating fin component works, the lower channel absorbs heat and stores heat firstly, then transfers heat upwards and radiates the heat, the middle channel which is transmitted upwards becomes narrow, the heat transfer quantity becomes small and the speed is reduced, the temperature cannot rise too fast after being transmitted to the upper channel, and the upper area of the radiating fin component exchanges heat with the outside air to radiate while the upper channel obtains the heat transmitted by the middle channel. This allows the temperature of the upper portion of the fin assembly to be maintained within a certain range, thereby not only meeting the heating performance requirements, but also avoiding excessive temperatures in the upper region of the fin assembly.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a heat sink assembly according to an embodiment of the present invention;

FIG. 2 shows another view of the heat sink assembly of FIG. 1;

FIG. 3 shows a cross-sectional view of the heat sink assembly of FIG. 2 at a location T-T;

FIG. 4 shows a cross-sectional view of the heat sink assembly of FIG. 2 at position M-M;

FIG. 5 shows a cross-sectional view of the heat sink assembly of FIG. 2 at position D-D;

FIG. 6 shows an exploded view of the fin assembly of FIG. 1;

FIG. 7 shows a cross-sectional view of the heat sink assembly of FIG. 1 at position A-A;

FIG. 8 shows an exploded view of FIG. 7;

fig. 9 shows another view of the heat sink assembly of fig. 1.

Wherein the figures include the following reference numerals:

10. a first heat sink; 11. a first sinking platform; 12. a main body; 13. a heat dissipation plate; 14. a second sinking platform; 15. a flanging structure; 20. a second heat sink; 30. an oil delivery passage; 31. an oil path; 32. a lower section; 33. a middle section; 34. an upper section; 41. a first positioning member; 42. a second positioning member; 43. feeding oil; 44. and (4) discharging oil.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in the drawings, embodiments of the present invention provide a heat sink assembly comprising: the cooling structure comprises a first cooling fin 10 and a second cooling fin 20 which are connected with each other, wherein an oil conveying channel 30 is arranged between the first cooling fin 10 and the second cooling fin 20, and the oil conveying channel 30 is used for conveying heat conduction oil; in the direction from bottom to top, the oil delivery passage 30 includes a lower passage, a middle passage, and an upper passage that are sequentially communicated; the sectional area of the lower channel is larger than that of the middle channel, and the sectional area of the middle channel is smaller than that of the upper channel.

The technical scheme of the utility model is applied, a radiating fin component is provided, the radiating fin component comprises a first radiating fin 10 and a second radiating fin 20 which are connected with each other, an oil transportation channel 30 is arranged between the first radiating fin 10 and the second radiating fin 20, and the oil transportation channel 30 is used for transporting heat conducting oil; in the direction from bottom to top, the oil delivery passage 30 includes a lower passage, a middle passage, and an upper passage that are sequentially communicated; the sectional area of the lower channel is larger than that of the middle channel, and the sectional area of the middle channel is smaller than that of the upper channel. In this embodiment, the larger the position of the cross-sectional area of the oil transfer passage 30, the more the heat transfer oil is accommodated, the larger the heat storage amount is, and the more the heat is transferred. When the radiating fin component works, the lower channel absorbs heat and stores heat firstly, then transfers heat upwards and radiates the heat, the middle channel which is transmitted upwards becomes narrow, the heat transfer quantity becomes small and the speed is reduced, the temperature cannot rise too fast after being transmitted to the upper channel, and the upper area of the radiating fin component exchanges heat with the outside air to radiate while the upper channel obtains the heat transmitted by the middle channel. This allows the temperature of the upper portion of the fin assembly to be maintained within a certain range, thereby not only meeting the heating performance requirements, but also avoiding excessive temperatures in the upper region of the fin assembly.

Specifically, the height of the heat sink assembly is L, the distance between the lower end of the upper channel and the upper end face of the heat sink assembly is L1, L1 is equal to or less than 1/4L, the distance between the upper end of the lower channel and the lower end face of the heat sink assembly is L2, and L2 is equal to or less than 1/2L. This also defines the length ranges of the lower, middle and upper channels. Through the limitation of the parameters, the temperature uniformity and the heating performance of the radiating fin component can be further improved.

In the present embodiment, the oil delivery passage 30 includes a plurality of oil passages 31 arranged at intervals. Through setting up a plurality of oil circuits 31, can make the conduction oil flow to the different positions in the fin subassembly, improve heat transfer effect and fin subassembly's temperature homogeneity. The plurality means two or more.

Further, in the present embodiment, the oil delivery passage 30 extends in a vertical direction, which facilitates the flow of the conduction oil and makes the fin assembly compact. In the case where the oil delivery passage 30 includes a plurality of oil passages 31, each oil passage 31 extends in the vertical direction.

In the present embodiment, each oil passage 31 includes, in a direction from bottom to top, a lower section 32, a middle section 33, and an upper section 34 that are sequentially communicated; the sum of the sectional areas of the lower sections 32 of the plurality of oil passages 31 of the oil delivery passage 30 is the sectional area of the lower passage, the sum of the sectional areas of the middle sections 33 of the plurality of oil passages 31 of the oil delivery passage 30 is the sectional area of the middle passage, and the sum of the sectional areas of the upper sections 34 of the plurality of oil passages 31 of the oil delivery passage 30 is the sectional area of the upper passage. This makes it possible to make the sectional area of the oil delivery passage 30 through which the conduction oil flows from bottom to top smaller and then larger.

Specifically, in each oil passage 31, the lower section 32 has a larger sectional area than the middle section 33, and the middle section 33 has a smaller sectional area than the upper section 34. Thus, for each oil path 31, the lower section 32 absorbs and stores heat, then transfers heat upwards and dissipates heat, the middle section 33 which is transferred upwards becomes narrow, the heat transfer amount becomes small and the speed is reduced, and then the heat is not heated too fast after being transferred to the upper section 34, and the upper section 34 obtains the heat transferred by the middle section 33 and simultaneously the upper area of the fin assembly exchanges heat with the outside air to dissipate heat. This is more advantageous in that the temperature of the upper portion of the heat sink assembly is maintained within a certain range and the uniformity of the temperature distribution of the heat sink assembly in the horizontal direction is improved.

In the present embodiment, the first heat sink 10 has a recessed first sinker 11, and the periphery of the second heat sink 20 matches the periphery of the first sinker 11. This facilitates positioning of the first and second heat sinks 10 and 20 at the time of assembly, and prevents positional deviation. Therefore, shaking and dislocation can be prevented, and the problem that the performance of products is influenced due to the fact that the conventional oil way is dislocated or obstructed is solved.

Further, the first heat sink 10 has a first positioning member 41 thereon, the second heat sink 20 has a second positioning member 42 thereon, and the second positioning member 42 is matched with the first positioning member 41 to position the first heat sink 10 and the second heat sink 20. The first and second heat sinks 10 and 20 can be conveniently and quickly positioned by the first and second positioning members 41 and 42.

Optionally, two first positioning parts 41 are arranged on the first heat sink 10 at intervals, two second positioning parts 42 are arranged on the second heat sink 20 at intervals, and the two second positioning parts 42 and the two first positioning parts 41 are arranged in a one-to-one correspondence manner, so that the positioning effect can be further improved.

Specifically, one of the first positioning element 41 and the second positioning element 42 is a protruding structure, and the other of the first positioning element 41 and the second positioning element 42 is a recessed structure, and the protruding structure is buckled with the recessed structure. The structure has the advantages of accurate positioning and convenient operation. Further, the first positioning member 41 has a hemispherical convex structure, and the second positioning member 42 has a hemispherical concave structure, so that the positioning members can play a guiding role during assembly, thereby facilitating alignment.

In this embodiment, the first heat sink 10 includes a main body 12 and a heat sink 13 connected to a peripheral edge of the main body 12, the second heat sink 20 is connected to the main body 12, the oil transfer passage 30 is located between the main body 12 and the second heat sink 20, and the heat sink 13 has a recessed second sinker 14. The heat dissipation plate 13 can increase the contact area with air, thereby improving the heat exchange effect. Further, by providing the second sinking platform 14, the structural strength of the heat radiating plate 13 can be improved, and the deformation resistance can be improved.

Further, in the present embodiment, the periphery of the heat dissipation plate 13 has the burring structure 15. By providing the flange structure 15, the strength of the heat dissipation plate 13 can be further improved, and the heat dissipation plate 13 can be prevented from being deformed by force.

Optionally, an upper oil pocket 43 and a lower oil pocket 44 are further provided between the first and second fins 10 and 20, wherein the lower oil pocket 44 communicates with the lower end of the oil transfer passage 30, and the upper oil pocket 43 communicates with the upper end of the oil transfer passage 30. This facilitates the containment of the thermal oil and the flow of the thermal oil.

Another embodiment of the present invention provides an electric oil heater, which includes the above heat sink assembly. The radiating fin component comprises a first radiating fin 10 and a second radiating fin 20 which are connected with each other, an oil conveying channel 30 extending along the vertical direction is arranged between the first radiating fin 10 and the second radiating fin 20, and the oil conveying channel 30 is used for conveying heat conduction oil; in the direction from bottom to top, the oil delivery passage 30 includes a lower passage, a middle passage, and an upper passage that are sequentially communicated; the sectional area of the lower channel is larger than that of the middle channel, and the sectional area of the middle channel is smaller than that of the upper channel. In this embodiment, the larger the position of the cross-sectional area of the oil transfer passage 30, the more the heat transfer oil is accommodated, the larger the heat storage amount is, and the more the heat is transferred. When the radiating fin component works, the lower channel absorbs heat and stores heat firstly, then transfers heat upwards and radiates the heat, the middle channel which is transmitted upwards becomes narrow, the heat transfer quantity becomes small and the speed is reduced, the temperature cannot rise too fast after being transmitted to the upper channel, and the upper area of the radiating fin component exchanges heat with the outside air to radiate while the upper channel obtains the heat transmitted by the middle channel. This allows the temperature of the upper portion of the fin assembly to be maintained within a certain range, thereby not only meeting the heating performance requirements, but also avoiding excessive temperatures in the upper region of the fin assembly.

Furthermore, the electric oil heater comprises a plurality of arranged radiating fin assemblies, the upper oil pockets of two adjacent radiating fin assemblies are communicated, and the lower oil pockets of two adjacent radiating fin assemblies are communicated.

To facilitate an understanding of the present solution, further details are provided below.

The radiator assembly is designed with three or even a plurality of oil paths distributed on the radiator assembly, and the oil paths of the radiator assembly are from bottom to top: the cross section area of the oil circuit at the lower part of the heat sink assembly and the cross section area of the oil circuit at the upper part are both larger than the cross section area of the oil circuit at the middle part. Namely, the oil path gradually narrows from bottom to top, and gradually widens again from top to bottom after passing through the middle oil path. Under the driving action of temperature difference, heat is transferred from bottom to top by means of heat-conducting oil in the oil circuit. The section area of the oil path at the lower part of the radiating fin component is large, the transmitted heat conduction oil is more, and the heat storage capacity is large. The section area of the middle oil way is small, the transmitted heat conduction oil is less, the heat transfer is small, and the transfer speed is low. The sectional area of the upper oil way is large, the oil quantity transmitted is larger than that of the middle oil way, and the heat demand is larger than that of the middle oil way. When the oil-gas heat exchanger works, the lower part firstly absorbs heat and stores heat, then transfers heat upwards and dissipates heat, the oil quantity transmitted is reduced along with the narrowing of the oil path transmitted upwards, the heat transfer quantity is reduced, and the heat transfer speed is gradually reduced. The upper part of the radiating fin component obtains heat transferred from the middle part and exchanges heat with the outside air to radiate the heat. Through the control of the sectional areas of the upper oil circuit, the middle oil circuit and the lower oil circuit, the peripheral temperature of the outer surface of the upper part of the radiating fin component is kept within a certain range, and the temperature of the lower part of the radiating fin component is automatically regulated and controlled according to the heating requirement. Therefore, the heating performance requirement of the oil heater body is met, and the anti-scalding problem of the periphery of the outer surface of the oil heater body is solved.

Furthermore, the sinking platform and the positioning piece on the radiating fin component ensure that two radiating fins in the component are accurately attached together front and back, left and right, and the problem of possible dislocation between the two radiating fins is solved.

Furthermore, the sinking platform and the flanging structure on the periphery of the oil circuit of the radiating fin component solve the problem of low strength of the sheet parts.

It should be noted that the oil heater body of the electric oil heater product is formed by connecting a plurality of heat sink assemblies up and down through a plurality of oil pockets, so that a plurality of oil paths in each heat sink assembly are interconnected and can be communicated. The oil heater body consists of a plurality of radiating fin components, an electric heating tube, heat conducting oil, a sealing element and the like. The radiating fin components are mutually attached together by two independent radiating fin components, oil pocket cavities which are mutually connected and can be communicated are respectively arranged between the radiating fin components from top to bottom, a plurality of oil ways between each radiating fin component are communicated through the upper oil pocket cavity and the lower oil pocket cavity, and heat conducting oil is stored in the oil pocket cavities and the oil ways to realize heat transfer.

And the lower oil pocket cavity communicating channel of the radiating fin component is provided with a heating body which is used for generating a heat source position. After being electrified, the heat is transferred to the heat conduction oil, and is absorbed by the heat conduction oil and then transferred to the periphery. The heat conducting oil in the oil circuit of the radiating fin component transfers heat to the channel, and the transfer direction is from bottom to top. The oil path channels of the radiating fin assembly on the existing product are uniform in size, the quantity of heat conduction oil in unit cross section area on the oil path transfer channel is equal, the heat transfer rate cannot be automatically adjusted, the peripheral temperature of the upper part of the radiating fin assembly is caused to drift too fast and easily exceeds the specified limit range, and if other control measures are taken, the heating and warming effects of the oil heater body can be influenced.

According to the scheme, the cross section area of the lower oil way and the cross section area of the upper oil way of the radiating fin component are larger than the cross section area of the middle oil way from bottom to top. Namely, the oil path gradually narrows from bottom to top, and gradually widens again from top to bottom after passing through the middle oil path. It can also be understood that the oil amount per unit cross-sectional area of the lower oil passage is larger than that of the middle oil passage, and the oil amount per unit cross-sectional area of the upper oil passage is larger than that of the middle oil passage. The heat transfer rate of the upper oil path, the middle oil path and the lower oil path is enabled to be non-uniform in gradual change, the transfer speed is changed from big to small and then increased in the process of heat transfer from bottom to top, the heat transfer proportion is adjusted through the gradual change mode of the oil path, the highest temperature of the periphery of the upper part of the radiating fin assembly is enabled to be lower than the temperature of the periphery of the lower part of the radiating fin assembly, the problem of scalding prevention of the periphery of the radiating fin assembly is convenient to solve, and the heating performance of the radiating fin.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A heat sink assembly, comprising:

a first radiating fin (10) and a second radiating fin (20) which are connected with each other, wherein an oil conveying channel (30) is arranged between the first radiating fin (10) and the second radiating fin (20), and the oil conveying channel (30) is used for conveying heat conduction oil;

in the direction from bottom to top, the oil delivery channel (30) comprises a lower channel, a middle channel and an upper channel which are communicated in sequence; wherein the cross-sectional area of the lower passage is greater than the cross-sectional area of the middle passage, and the cross-sectional area of the middle passage is less than the cross-sectional area of the upper passage.

2. A fin assembly according to claim 1, wherein the oil delivery passage (30) includes a plurality of spaced oil passages (31).

3. The fin assembly according to claim 2, wherein each of the oil passages (31) includes a lower section (32), a middle section (33) and an upper section (34) which are communicated in sequence in a direction from bottom to top; the sum of the sectional areas of the lower sections (32) of the plurality of oil passages (31) of the oil delivery passage (30) is the sectional area of the lower passage, the sum of the sectional areas of the middle sections (33) of the plurality of oil passages (31) of the oil delivery passage (30) is the sectional area of the middle passage, and the sum of the sectional areas of the upper sections (34) of the plurality of oil passages (31) of the oil delivery passage (30) is the sectional area of the upper passage.

4. A fin assembly according to claim 3, wherein in each of said oil passages (31), the cross-sectional area of said lower section (32) is greater than the cross-sectional area of said middle section (33), and the cross-sectional area of said middle section (33) is smaller than the cross-sectional area of said upper section (34).

5. A heat sink assembly according to claim 1, wherein the first heat sink (10) has a recessed first plateau (11), and the periphery of the second heat sink (20) matches the periphery of the first plateau (11).

6. A heat sink assembly according to claim 1, wherein the first heat sink (10) has a first locating feature (41) thereon and the second heat sink (20) has a second locating feature (42) thereon, the second locating feature (42) mating with the first locating feature (41) to locate the first heat sink (10) and the second heat sink (20).

7. A fin assembly according to claim 6, wherein one of said first (41) and second (42) locations is a raised structure and the other of said first (41) and second (42) locations is a recessed structure, said raised structure engaging said recessed structure.

8. A heat sink assembly according to claim 1, wherein the first heat sink (10) comprises a main body (12) and a heat sink plate (13) attached to the periphery of the main body (12), the second heat sink (20) being attached to the main body (12), the oil delivery passage (30) being located between the main body (12) and the second heat sink (20), the heat sink plate (13) having a recessed second landing (14) thereon.

9. A heat sink assembly according to claim 8, wherein the periphery of the heat sink plate (13) is provided with a flange formation (15).

10. A heat sink assembly as recited in claim 1 wherein the height of the heat sink assembly is L, the distance between the lower end of the upper channel and the upper end surface of the heat sink assembly is L1, L1 ≤ 1/4L, and the distance between the upper end of the lower channel and the lower end surface of the heat sink assembly is L2, L2 ≤ 1/2L.

11. A fin assembly according to claim 1, wherein the oil delivery passage (30) extends in a vertical direction.

12. An electric oil-filled radiator comprising a heat sink assembly as claimed in any one of claims 1 to 11.

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