CN217275761U - Novel embedded 3D samming plate structure of air runner - Google Patents

Abstract

The utility model relates to a novel embedded 3D samming structure of air runner is higher to the manufacturing cost who solves current like product, and stability is not good enough, and the comparatively inconvenient not good enough technical problem of stability of production assembly designs. The inner cavity of the shell formed by the plate body and the cover plate of the temperature equalizing plate is provided with embedded fins, and the contact surface 3a of each fin is provided with a groove, a fin sintered layer or a hydrophobic layer; the key points are that an inner cavity between the outer diameter of the inner fin of the shell and the inner diameter of the shell is a steam cavity, liquid injection in the steam cavity is a liquid working medium for phase change heat exchange, the peripheral surface of the outer diameter of the inner fin of the shell is a contact surface 3a, fins distributed at equal intervals are arranged in the fins and are divided into corresponding air flow channels 3b, and orifices at two ends of the air flow channels 3b are respectively sealed and exposed out of the shell; the evaporation surface 2a is provided with columnar arrays or shell sintering layers distributed at equal intervals, fins are embedded in the middle of the shell through the columnar arrays or the sintering layers, and the shell can also form a box body through plates.

Description

Novel embedded 3D samming plate structure of air runner

Technical Field

The utility model relates to a board-like heat abstractor is a novel embedded 3D samming plate structure of air runner.

Background

The heat dissipation device is used for quickly dissipating heat in equipment components such as mechanical equipment, a metal cabinet, a circuit board and the like so as to ensure the normal work of the equipment components, and comprises a heat dissipation fan, a heat dissipation plate, a cooling tower, a condensate pipe, a temperature equalization plate and the like. The temperature equalizing plate is similar to a heat pipe in principle, but is different in conduction mode; the heat pipe is one-dimensional heat conduction, and the heat in the vapor chamber of the vacuum chamber is conducted on a two-dimensional surface, so that the efficiency is higher. Compared with a traditional two-dimensional temperature equalizing plate, the 3D temperature equalizing plate is more flexible in structural design, and has the characteristics of higher integration level, higher steam diffusion efficiency, lower thermal resistance and higher heat dissipation upper limit. With the improvement of the integration level of electronic devices such as chips and the like and the increase of heat dissipation requirements, the 3D temperature-uniforming plate is increasingly widely applied. The existing 3D vapor chamber has two ways, one is to insert a copper heat pipe to expand a vapor space on the original two-dimensional vapor chamber, and the other is to add a vertical cavity space on the vapor chamber, such as application No. 202110144725.8 disclosed in the chinese patent document, application publication No. 2021.05.11, and the utility model discloses a double-layer 3D vapor chamber, a heat dissipation module and a method for manufacturing the heat dissipation module. But the former depends on the performance of the heat pipe, and the copper heat pipe has the problems of high cost and lower environmental protection performance than aluminum; the latter has a complex inner cavity structure, high manufacturing difficulty and failure risk.

Disclosure of Invention

For overcoming the above-mentioned not enough, the utility model aims at providing a novel embedded 3D samming structure of air runner to this field, make its manufacturing cost who solves current like product higher, stability is not good enough, the comparatively inconvenient technical problem of production assembly. The purpose is realized by the following technical scheme.

A novel 3D temperature-equalizing plate structure embedded in an air flow channel comprises a plate body and a cover plate, wherein a top plate opening of the plate body and the cover plate are connected into a whole to form a shell, an embedded fin is arranged in an inner cavity of the shell and is cylindrical, the bottom plate surface of the plate body is a heating surface, and the inner wall surface of the inner cavity in the shell is an evaporation surface 2 a; the structure design key points are that an inner cavity between the outer diameter of each fin and the inner diameter of a shell is a steam cavity, liquid injection in the steam cavity is a liquid working medium for phase change heat exchange, the peripheral surface of the outer diameter of each fin is a contact surface 3a, fins distributed at equal intervals are arranged in the fins and are divided into corresponding air flow channels 3b, and orifices at two ends of each air flow channel 3b are respectively exposed out of the shell in a sealing way; the evaporation surface 2a is provided with a columnar array or a shell sintering layer which are distributed at equal intervals, and the fins are embedded in the middle of the shell through the columnar array or the sintering layer. The mass transfer process of the steam cavity comprises the following steps: liquid working medium is phase-change evaporated and diffused to the steam cavity on the evaporation surface 2a, then steam is condensed on the steam cavity 3a, and the liquid working medium generated by condensation flows back to the steam cavity 2a under the action of gravity; the heat transfer process of the steam cavity is as follows: heat enters the temperature-uniforming plate from a heat source through the 2a, liquid working media carry away the heat through evaporation phase change of the 2a, along with the diffusion of gaseous working media in the steam cavity, the heat is diffused to the whole steam cavity at the same time, then the steam is condensed at the 3a to transfer the heat to the 3b, and the air in the 3b and the surfaces of the fins perform forced convection heat exchange to carry away the heat.

The contact surface 3a of the fin is provided with a groove, a fin sintered layer or a hydrophobic layer. The structure improves the circulation and heat transfer of the working medium in the fins.

The fins in the fins are arranged at intervals transversely or longitudinally. The above is an example of the arrangement structure of two kinds of fins.

The fins are symmetrically arranged on two sides of an inner cavity of the shell formed by the plate body and the cover plate, orifices at two ends of the air flow channel 3b are respectively exposed out of the shell through the end cover plate in a sealing mode, and orifices at two ends of the air flow channel 3b of the fins are respectively exposed out of the shell through the end cover plate in a fixed sealing mode. The above-mentioned structure embodiment is that the fin is fixed to the casing through the cover plate, and it can also omit the cover plate and be fixedly connected through welding.

The fin is the cuboid, and the bottom of fin is the plane, and the top is the inclined plane, and the top of fin is by the middle outside bottom inclined plane setting of inner chamber, and middle one side fin corner bottom tilt up setting of inner chamber, the bottom of plate body are equipped with equidistance distribution and bellied bar post, and the top of apron is equipped with and corresponds bellied circular post with fin top inclined plane. The structure embodiment of above-mentioned fin is convenient for improve its inside heat dissipation ventilation effect, and according to the setting of above-mentioned apron, the bar post of plate body and the circular post of apron also can omit.

The plate body is replaced by a box base, the cover plate is replaced by a box cover plate, the box base, the box cover plate and the box side plate are connected to form a box body, orifices at two ends of the air flow channel 3b of the fins are respectively exposed out of the shell through the box cover plate in a fixed and sealed mode, and the fins are distributed at equal intervals. The above is another structural embodiment.

The fin is rhombus, and the both ends closed angle of fin sets up from top to bottom respectively towards, is equipped with the equidistance in the bottom recess of case base and distributes and bellied square post. The above is a specific structure of the fin in another embodiment.

The utility model has the advantages of reasonable structural design, high integration level, low production cost, convenient production and assembly, good heat dissipation effect and small thermal resistance; the air flow channel embedded 3D temperature-equalizing plate is suitable for being used as an air flow channel embedded 3D temperature-equalizing plate and is further improved for similar products.

Drawings

Fig. 1 is an exploded schematic view of an embodiment of the present invention.

Fig. 2 is a schematic view of the bottom structure of the cover plate of fig. 1.

Fig. 3 is a schematic perspective view of fig. 1.

Fig. 4 is a schematic sectional structure view of fig. 3.

Fig. 5 is a schematic perspective view of a second embodiment of the present invention, in which a portion a is framed.

Fig. 6 is an enlarged view of a portion a of fig. 5.

Fig. 7 is a schematic diagram of the exploded structure of fig. 5.

Reference numbers and designations: 1. plate body, 101, bar post, 2, apron, 201, circular post, 3, fin, 4, end cover board, 5, bottom of the case seat, 501, square post, 6, case apron, 7, case curb plate.

Detailed Description

The structure and use of the present invention will now be further described with reference to the accompanying drawings. As shown in fig. 1-4, in the first embodiment, the temperature equalization plate includes a plate body 1, a cover plate 2 and fins 3, the top plate opening of the plate body and the cover plate are connected into a whole to form a housing, the fins are embedded in the inner cavity of the housing, the fins are cylindrical, the bottom plate surface of the plate body is a heating surface, and the inner wall surface of the inner cavity in the housing is an evaporation surface 2 a. An inner cavity between the outer diameter and the inner diameter of each fin is a steam cavity, liquid injection in the steam cavity is a liquid working medium for phase change heat exchange, the peripheral surface of the outer diameter of each fin is a contact surface 3a, fins distributed at equal intervals are arranged in the fins and are divided into corresponding air flow channels 3b, and orifices at two ends of each air flow channel 3b are respectively sealed and exposed out of the shell; the evaporation surface 2a is provided with a columnar array or a shell sintering layer which are distributed at equal intervals, and the fins are embedded in the middle of the shell through the columnar array or the sintering layer. The contact surface 3a of the fin is provided with grooves, a fin sintered layer or a hydrophobic layer, and fins in the fin are arranged at intervals transversely or longitudinally. The concrete structure is as follows: the fins are symmetrically arranged on two sides of an inner cavity of the shell formed by the plate body and the cover plate, orifices at two ends of the air flow channel 3b are respectively exposed out of the shell in a sealing mode through the end cover plate 4, and orifices at two ends of the air flow channel 3b of the fins are respectively exposed out of the shell in a fixed sealing mode through the end cover plate. The fin is the cuboid, and the bottom of fin is the plane, and the top is the inclined plane, and the top of fin is by the middle outside bottom inclined plane setting of inner chamber, and middle one side fin corner bottom tilt up setting of inner chamber, the bottom of plate body are equipped with equidistance distribution and bellied bar post 101, and the top of apron is equipped with and corresponds bellied circular post 201 with fin top inclined plane. The fins are embedded in the shell, 2a is an evaporation surface of the temperature-uniforming plate, 3a is a contact surface of the embedded fins and the steam cavity, 3b is an air flow channel for air circulation, a plate body, a cover plate and the fins of the temperature-uniforming plate are integrally formed by aluminum materials, the cover plate can be omitted, and orifices at two ends of the air flow channel 3b of the direct fins are directly welded and fixed to corresponding orifices of the plate body.

A certain amount of liquid working medium is filled in the temperature-equalizing plate, so that the temperature-equalizing plate can normally work; liquid working media in the steam cavity are subjected to phase change evaporation and diffusion to the steam cavity on the evaporation surface 2a, then steam is condensed on the evaporation surface 3a, and the liquid working media generated by condensation flow back to the evaporation surface 2a under the action of gravity; meanwhile, heat enters the temperature-uniforming plate from a heat source through the 2a, the liquid working medium evaporates in the 2a to take away the heat, the heat is simultaneously diffused to the whole steam cavity along with the diffusion of the liquid working medium in the steam cavity, and then the steam is condensed in the 3a to transfer the heat to the air in the 3b to perform forced convection heat exchange with the surfaces of the fins to take away the heat.

As shown in fig. 5-7, in the second embodiment, the plate body is replaced by a box base 5, the cover plate is replaced by a box cover plate 6, the box base, the box cover plate and the box side plate 7 are connected to form a box body, the openings at the two ends of the air flow channel 3b of the fin are respectively exposed out of the shell through the box cover plate in a fixed and sealed manner, and the fins are distributed at equal intervals. The fins are rhombic, sharp corners at two ends of each fin are arranged up and down, and the bottom grooves of the box bases are internally provided with the raised square columns 501 which are distributed at equal intervals, so that the heat exchange area and the size of the inner cavity are large. The temperature equalizing plate is suitable for working conditions of different heat fluxes, heat exchange areas and air fluxes, and the principle of the temperature equalizing plate is that the number, the shape and the fin density of embedded fins and the shape and the size of an evaporation cavity are adjusted according to the heat fluxes, the heat exchange areas and the air flow.

In summary, the vapor chamber is provided with surface modification structures such as a columnar array and a shell sintering layer on the evaporation surface 2a for enhancing the evaporation effect; according to the temperature equalizing plate structure, surface modification structures such as grooves, fin sintering layers and hydrophobic layers are added on the surface of the plate 3a to enhance condensation and drainage effects; the structure of the temperature equalizing plate is designed to the structure of the fins in a special shape, a turbulent flow and other structures, so that the single-phase convective heat transfer effect is enhanced.

Compared with other forms of the temperature-uniforming plate with external fins, the fins and the air flow channels are embedded in the cavity of the temperature-uniforming plate, steam in the steam cavity is condensed at the inner side of the cavity with the embedded fins, the contact surface of the steam and the fins is larger, and the whole condensation process and the gas-liquid circulation process are more efficient; the whole temperature-equalizing plate is simple in structure, the related processes of section bar stretching, brazing and the like are relatively mature, and the manufacturing cost is low.

Claims (7)

1. A novel 3D temperature-uniforming plate structure embedded in an air flow channel comprises a plate body (1) and a cover plate (2), wherein a top plate opening of the plate body and the cover plate are connected into a whole to form a shell, an embedded fin (3) is arranged in an inner cavity of the shell and is cylindrical, a bottom plate surface of the plate body is a heating surface, and an inner wall surface at the position of the inner cavity in the shell is an evaporation surface (2 a); the heat exchanger is characterized in that an inner cavity between the outer diameter of the fin (3) and the inner diameter of the shell is a steam cavity, liquid injection in the steam cavity is a liquid working medium for phase change heat exchange, the peripheral surface of the outer diameter of the fin is a contact surface (3 a), fins distributed at equal intervals are arranged in the fin and are divided into corresponding air flow channels (3 b), and orifices at two ends of each air flow channel (3 b) are respectively sealed and exposed out of the shell; the evaporation surface (2 a) is provided with a columnar array or a shell sintering layer which are distributed at equal intervals, and the fins are embedded in the middle of the shell through the columnar array or the sintering layer.

2. The novel 3D temperature equalization plate structure embedded in an air flow channel according to claim 1, characterized in that the contact surface (3 a) of the fin (3) is provided with a groove, a fin sintered layer or a hydrophobic layer.

3. The novel air flow channel embedded 3D temperature-equalizing plate structure as claimed in claim 1, wherein the fins in the fins (3) are arranged in a transversely or longitudinally spaced manner.

4. The novel 3D temperature equalizing plate structure embedded in the air flow channel according to claim 1, wherein the fins (3) are symmetrically arranged on two sides of an inner cavity of the shell formed by the plate body (1) and the cover plate (2), two end openings of the air flow channel (3 b) are respectively exposed out of the shell through the end cover plate (4) in a sealing manner, and two end openings of the air flow channel (3 b) of each fin are respectively exposed out of the shell through the end cover plate in a fixed and sealed manner.

5. The novel 3D temperature equalizing plate structure embedded in the air flow channel as claimed in claim 4, wherein the fins (3) are cuboid, the bottom of each fin is a plane, the top of each fin is an inclined plane, the top of each fin is arranged from the middle of the inner cavity to the bottom inclined plane at the outer side, the bottom of the corner of each fin at one side of the middle of the inner cavity is inclined upwards, the bottom of the plate body (1) is provided with equally distributed and raised bar-shaped columns (101), and the top of the cover plate (2) is provided with raised circular columns (201) corresponding to the inclined planes at the tops of the fins.

6. The novel 3D temperature equalizing plate structure embedded in the air flow channel according to claim 1, wherein the plate body (1) is replaced by a box base (5), the cover plate (2) is replaced by a box cover plate (6), the box base and the box cover plate are connected with a box side plate (7) to form a box body, orifices at two ends of the air flow channel (3 b) of the fin (3) are respectively exposed out of the shell through the box cover plate in a fixed and sealed manner, and the fins are distributed at equal intervals.

7. The novel 3D temperature equalizing plate structure embedded in the air flow channel as claimed in claim 6, wherein the fins (3) are diamond-shaped, the sharp corners at the two ends of the fins are respectively arranged upward and downward, and the bottom grooves of the box base (5) are internally provided with the raised square columns (501) which are distributed at equal intervals.

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