CN213847377U - Heat dissipation shell with compact large heat dissipation surface and mobile terminal - Google Patents
Heat dissipation shell with compact large heat dissipation surface and mobile terminal Download PDFInfo
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- CN213847377U CN213847377U CN202022303280.7U CN202022303280U CN213847377U CN 213847377 U CN213847377 U CN 213847377U CN 202022303280 U CN202022303280 U CN 202022303280U CN 213847377 U CN213847377 U CN 213847377U
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Abstract
The embodiment of the utility model discloses heat dissipation casing and mobile terminal of big cooling surface of compact. The heat dissipation casing includes casing and interval distribution in the heat dissipation fin of casing, heat dissipation fin includes certainly the convex main part muscle in surface of casing and certainly the local convex extension muscle of at least one side surface of main part muscle, the extension muscle certainly the casing to the free end direction interval distribution of main part muscle. The surface of the radiating fin protrudes to form an expansion rib, the expansion rib enables the surface of the radiating fin to have a curved surface structure with fluctuation, the radiating area is large, and the radiating efficiency of the radiating shell is improved.
Description
Technical Field
The utility model belongs to the technical field of the electronic equipment technique and specifically relates to a radiating shell and mobile terminal of big cooling surface of compact.
Background
In the related art, the surface of the heat dissipation housing is provided with straight-wall-shaped heat dissipation ribs, and the surfaces of the heat dissipation ribs are smooth, so that the heat dissipation area of the heat dissipation ribs is small, and the heat dissipation efficiency cannot be improved, and therefore improvement is needed.
Disclosure of Invention
To the technical problem, the embodiment of the utility model provides a heat dissipation casing and mobile terminal of big cooling surface of compact.
The embodiment of the utility model provides a first aspect provides a big cooling surface's of compact heat dissipation casing, including casing and interval distribution in the cooling fin of casing, cooling fin includes certainly the convex main part muscle in surface of casing and certainly the local convex extension muscle of at least one side surface of main part muscle, the extension muscle certainly the casing to the free end direction interval distribution of main part muscle.
In one embodiment, the expansion ribs are distributed at equal intervals on the main body rib; or, the distance between the extending ribs from the casing to the free end of the main body rib is gradually reduced.
In one embodiment, the height of the expanded ribs protruding out of the main body ribs is the same; or, the height of the expansion rib protruding the main body rib is gradually reduced from the casing to the spacing distance in the direction of the free end of the main body rib.
In one embodiment, the expansion rib is a linear convex rib in a cantilever shape; or, the expansion ribs are bent relative to the main body ribs; or the expansion ribs are arc convex ribs.
In an embodiment, a ratio of a maximum height of the expansion rib protruding the main body rib to a thickness of the main body rib where the expansion rib is located is K, wherein K is greater than or equal to 0.5 and less than or equal to 3.
In one embodiment, the thickness dimension of the expansion rib gradually decreases from the main body rib to the free end.
In one embodiment, the expansion ribs are distributed on two side surfaces of the main body rib, which are opposite to each other.
In one embodiment, the oppositely disposed expansion ribs are flush with or offset from each other.
In one embodiment, the expansion ribs in two adjacent heat dissipation fins are correspondingly aligned or distributed in a staggered manner.
A second aspect of the embodiments of the present invention provides a mobile terminal, including a main board assembly and a heat dissipation housing as above, the main board assembly is installed in the heat dissipation housing and with the casing heat conduction connection.
The embodiment of the utility model provides a heat radiation fins's surface protrusion forms the extension muscle among the technical scheme that provides, and this extension muscle makes heat radiation fins's surface have the curved surface structure that undulates and changes, and heat radiating area is big, improves the radiating efficiency of heat dissipation casing.
Drawings
Fig. 1 is a schematic perspective view of a heat dissipation housing according to the present invention;
fig. 2 is a schematic cross-sectional structure view of the heat dissipation housing with spherical expansion ribs of the present invention;
fig. 3 is a schematic cross-sectional structure view of the heat dissipation housing with the expansion ribs flush with each other according to the present invention;
fig. 4 is a schematic cross-sectional structure view of the heat dissipation housing with staggered expansion ribs of the present invention;
fig. 5 is a schematic cross-sectional structure view of the heat dissipation casing with the expansion ribs being arc-shaped convex ribs of the present invention.
In the figure: a housing 10; heat dissipating fins 20; a main body rib 21; the ribs 22 are expanded.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the following embodiments may be combined without conflict.
See fig. 1 and 2 for illustration: the utility model discloses a heat dissipation casing of big cooling surface of compact, heat dissipation casing include casing 10 and interval distribution in casing 10's heat radiation fins 20. The heat dissipation fins 20 include main body ribs 21 protruding from the surface of the housing 10 and expansion ribs 22 protruding from at least one side surface of the main body ribs 21, and the expansion ribs 22 are distributed from the housing 10 to the free end direction of the main body ribs 21 at intervals.
The heat dissipation case is made of a metal material such as copper and its alloy, aluminum and its alloy, and other metal materials. The heat dissipation fins 20 are arranged on the surface of the housing 10 at intervals, and the heat dissipation fins 20 are in a convex wall or a convex rib shape, and increase the contact area between the housing 10 and the air.
The main body rib 21 protrudes from the surface of the casing 10 and has a convex wall or a convex rib shape. The surface of the main rib 21 is distributed with the expanded ribs 22 at intervals, so that the surface of the main rib 21 forms a non-planar wall surface to increase the heat dissipation area of the heat dissipation fins 20.
The expansion ribs 22 are distributed at intervals along the extension direction of the main body rib 21, the distribution range is wide, the adjacent expansion ribs 22 cannot interfere with each other, the heat dissipation effect is good, and the air flow performance is good. In one embodiment, the expansion ribs 22 are equidistantly distributed on the main ribs 21, so as to make air circulation in each portion of the heat sink 20 smooth. The expansion ribs 22 are distributed at equal intervals, and the heat dissipation of the heat dissipation fins 20 is balanced in all directions.
In another embodiment, the distance between the expansion ribs 22 decreases gradually from the casing 10 to the free end of the main body rib 21. The concentration of the expansion ribs 22 is increased in the direction of the free ends of the heat dissipation fins 20, so that the heat of the chassis 10 at the ends of the heat dissipation fins 20 is concentrated, the air circulation speed of the heat dissipation fins 20 around the surface of the heat dissipation housing is high, and the heat dissipation efficiency is further improved.
The expansion ribs 22 are formed by locally protruding from the surface of the main body rib 21, wherein the protruding height of the expansion ribs 22 can be flexibly adjusted according to design requirements and application scenes.
In one embodiment, the height of the expansion ribs 22 protruding the main body ribs 21 is the same, so that the heat dissipation area formed by the expansion ribs 22 has high consistency and high overall aesthetic degree.
In another embodiment, the height of the expansion rib 22 protruding the main body rib 21 is gradually reduced from the casing 10 to the free end direction of the main body rib 21, so that the heat dissipation area of the expansion rib 22 is gradually reduced from the casing 10 to the end direction of the main body rib 21, thereby forming a temperature difference. Accordingly, the air flow area is gradually decreased from the free end of the radiator fin 20 toward the casing 10 to improve the efficiency of air convection.
See fig. 2-5 for illustration: the expansion ribs 22 are formed by partially protruding from the surface of the main body rib 21, and the shape thereof can be flexibly adjusted according to design requirements and application scenarios.
In one embodiment, the expansion rib 22 is a linear rib in a cantilever shape, and the expansion rib 22 extends along the transverse extension direction of the main rib 21. Alternatively, the projecting direction of the expanded bead 22 is perpendicular to the bisector plane of the main body bead 21; alternatively, the extending direction of the expansion rib 22 is inclined with respect to the main body rib 21. For example, the expansion ribs 22 may be in the form of plates, spheres, triangles, terraces, or other ribs.
In another embodiment, the expansion ribs 22 are bent relative to the main ribs 21 to form a corrugated or inclined or curved rib structure, and the heat dissipation area can be adjusted accordingly to increase the heat dissipation ratio.
In another embodiment, the expansion ribs 22 are arc-shaped ribs, so that two adjacent expansion ribs 22 on the same heat sink 20 are distributed at intervals in a curved surface, and the air circulation is smooth.
In one embodiment, the ratio of the maximum height of the expanded rib 22 protruding the main body rib 21 to the thickness of the main body rib 21 where the expanded rib 22 is located is K, where K is greater than or equal to 0.5 and less than or equal to 3. For example, if the length of the main body rib 21 is 70mm, the average thickness is 2mm, and the maximum height is 13mm, the maximum height of the main body rib 21 where the expanded rib 22 protrudes is 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, or the like. The maximum height of the expansion ribs 22 can be adjusted according to the size of the main body ribs 21, so as to ensure the processing strength and the heat dissipation area.
Optionally, the thickness of the expanded ribs 22 protruding from the main body rib 21 is uniform, or the thickness of the expanded ribs 22 gradually decreases from the main body rib 21 to the free end, so as to further enlarge the heat dissipation area.
In the above embodiment, the expansion rib 22 may be provided on one side of the main body rib 21; or, the expansion ribs 22 are distributed on the two opposite side surfaces of the main body rib 21, so as to enlarge the heat dissipation area and improve the balance of the heat dissipation fins 20.
When the expansion ribs 22 are distributed on the surfaces of the two opposite sides of the main body rib 21, the expansion ribs 22 arranged in a back-to-back manner are flush with each other, so that the processing stress and the heat dissipation uniformity are improved; alternatively, the expansion ribs 22 disposed opposite to each other are disposed in a staggered manner, and the smoothness of the gas flow is improved by the stress distribution of the heat dissipation fins 20.
As shown in fig. 3: furthermore, the expansion ribs 22 in two adjacent heat dissipation fins 20 are flush with each other, so that the heat dissipation spaces of the expansion ribs 22 in the heat dissipation fins 20 are communicated, and the smoothness of air circulation is improved. Alternatively, as shown in FIG. 4: the expansion ribs 22 in two adjacent heat dissipation fins 20 are distributed in a staggered manner, so that the expansion ribs 22 of two adjacent heat dissipation fins 20 are complementary, and the space utilization rate and the gas circulation are improved.
The experimental data of the straight heat dissipation fins 20 and the heat dissipation fins 20 with the expansion ribs 22 are compared, so as to further confirm that the heat dissipation efficiency of the heat dissipation fins 20 with the expansion ribs 22 is higher and the heat dissipation performance is better.
In a conventional profile with straight radiator fins 20: the heat dissipation fins 20 are plate-shaped straight fins formed by protruding from the surface of the profile, wherein the dimensions of the profile are as follows: the length is 70mm, the width is 51.2mm, the height is 13mm, the number of the radiating fins 20 in the section bar is 21, and the radiating surface area of the section bar is 38570 square millimeters according to calculation. Calculating the heat dissipation capacity: q ═ a (Tw-T0) F, where Q is the heat dissipation capacity, Tw is the surface temperature of the radiator (example value 60 ℃), T0 is the ambient temperature (example value 25 ℃), and F is the radiator surface area (38570 mm)2) And A is the comprehensive heat transfer coefficient (we take natural air convection as an example, about 5w/m2K). The heat dissipation of the conventional profile with straight fins 20 is obtained: q-5 (60 ℃ -25 ℃) 0.03857m2＝6.75W。
And the novel profile of the radiator fin 20 with the expansion ribs 22: the expansion muscle 22 is for setting up in the wave distribution structure that main part muscle 21 both sides surface is the protruding muscle of sphere, and wherein, the section bar size is: the length is 70mm, the width is 51.2mm, the height is 13mm, and the number of the radiating fins 20 in the section bar is 21. The heat sink fins 20 with the expansion ribs 22 are of a wave-shaped design and have a length, a width and a heightUnder the same size, the heat dissipation area of the wave-shaped fin heat sink is 5239 square millimeters larger than that of the straight fin heat sink. 2. Calculating the heat dissipation capacity: q ═ a (Tw-T0) F, where Q is the heat dissipation capacity, Tw is the surface temperature of the heat sink (e.g., 60 ℃), T0 is the ambient temperature (e.g., 25 ℃), and F is the surface area of the heat sink (43809 mm)2) And A is the comprehensive heat transfer coefficient (we take natural air convection as an example, about 5w/m2K). Heat dissipation capacity of the new profile of the cooling fin 20 with the expansion ribs 22: q ═ 5 ℃, (60 ℃ -25 ℃) 0.0438m2＝7.6W。
From the above data, it is calculated that the heat dissipation capacity of the heat sink with the heat dissipation fins 20 having the expansion ribs 22 is 0.8W more than that of the heat sink with the conventional straight fin design.
The heat dissipation shell disclosed in the above embodiment is applied to a mobile terminal, wherein the mobile terminal includes a main board assembly and the heat dissipation shell as described above, and the main board assembly is installed in the heat dissipation shell and is in heat conduction connection with the casing 10. The mobile terminal includes but is not limited to a notebook computer, a tablet computer, a mobile phone, a wireless communication device, etc.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides a big cooling surface's of compact heat dissipation casing, its characterized in that, including casing and interval distribution in the cooling fin of casing, cooling fin includes certainly the convex main part muscle in surface of casing and certainly the local convex extension muscle of at least side surface of main part muscle, the extension muscle certainly the casing to the free end direction interval distribution of main part muscle.
2. The heat dissipation housing of claim 1, wherein the expansion ribs are equidistantly distributed over the main body ribs; or, the distance between the extending ribs from the casing to the free end of the main body rib is gradually reduced.
3. The heat dissipation housing of claim 1, wherein the height of the expanded ribs protruding from the main body ribs is the same; or, the height of the expansion rib protruding the main body rib is gradually reduced from the casing to the spacing distance in the direction of the free end of the main body rib.
4. The heat dissipation housing of claim 1, wherein the expansion ribs are linear ribs that are cantilevered; or, the expansion ribs are bent relative to the main body ribs; or the expansion ribs are arc convex ribs.
5. The heat dissipation housing as claimed in claim 1, wherein a ratio of a maximum height of the expansion ribs protruding from the main body ribs to a thickness of the main body ribs where the expansion ribs are located is K, wherein K is greater than or equal to 0.5 and less than or equal to 3.
6. The heat dissipation housing of claim 1, wherein the thickness dimension of the expansion ribs gradually decreases from the main body ribs toward the free ends.
7. The heat dissipating housing of any one of claims 1 to 6, wherein the expansion ribs are distributed on two opposite side surfaces of the main body ribs.
8. The heat dissipation housing of claim 7, wherein the oppositely disposed expansion ribs are aligned with or offset from each other.
9. The heat dissipation housing as claimed in claim 1, wherein the expansion ribs of two adjacent heat dissipation fins are correspondingly aligned or offset.
10. A mobile terminal, comprising a main board assembly and the heat dissipation housing as claimed in any one of claims 1 to 9, wherein the main board assembly is mounted in the heat dissipation housing and is in heat-conducting connection with the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022303280.7U CN213847377U (en) | 2020-10-16 | 2020-10-16 | Heat dissipation shell with compact large heat dissipation surface and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022303280.7U CN213847377U (en) | 2020-10-16 | 2020-10-16 | Heat dissipation shell with compact large heat dissipation surface and mobile terminal |
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| Publication Number | Publication Date |
|---|---|
| CN213847377U true CN213847377U (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022303280.7U Active CN213847377U (en) | 2020-10-16 | 2020-10-16 | Heat dissipation shell with compact large heat dissipation surface and mobile terminal |
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