CN220472419U - Heat dissipation structure - Google Patents
Heat dissipation structure Download PDFInfo
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- CN220472419U CN220472419U CN202322000898.XU CN202322000898U CN220472419U CN 220472419 U CN220472419 U CN 220472419U CN 202322000898 U CN202322000898 U CN 202322000898U CN 220472419 U CN220472419 U CN 220472419U
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- heat
- heat dissipation
- combustion chamber
- fins
- piece
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 69
- 238000002485 combustion reaction Methods 0.000 claims abstract description 37
- 238000001816 cooling Methods 0.000 claims description 16
- 238000009423 ventilation Methods 0.000 claims description 16
- 230000005855 radiation Effects 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000010248 power generation Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model discloses a heat dissipation structure, which is used for dissipating heat of a combustion chamber, wherein the combustion chamber is provided with a combustion chamber and comprises a cover shell and a cylinder mouth for covering the combustion chamber, the cover shell comprises a cover body and a heat dissipation part, the cover body is provided with a first surface facing the cylinder mouth of the combustion chamber and a second surface opposite to the first surface, and the heat dissipation part is arranged on the first surface and the second surface of the cover body; the heat conducting piece is sleeved on the periphery of the burning-extending cavity; the thermoelectric generation piece is provided with a hot end conduction surface, and the hot end conduction surface is attached to the outer wall of the heat conducting piece. The heat dissipation is carried out on the combustion chamber of the combustion chamber through the housing and the heat conducting piece, so that the heat tolerance value of the thermoelectric generation sheet is not exceeded, the thermoelectric generation sheet is protected, and the service life of the thermoelectric generation sheet is prolonged; in addition, the heat conducting piece is favorable for providing a stable thermal field for the hot end conducting surface of the thermoelectric generation piece, and is favorable for generating stable and sufficient electric energy.
Description
Technical Field
The utility model relates to the technical field of heat dissipation, in particular to a heat dissipation structure.
Background
When the thermal energy generated by fuel combustion is directly used for thermoelectric power generation, for example, when diesel combustion is adopted, the temperature of generated hot air is higher than 400 ℃ due to higher combustion heat value of the diesel, and exceeds the tolerance value of a semiconductor thermoelectric power generation sheet, so that the thermoelectric power generation sheet is protected, the service life is prolonged, the hot end of the semiconductor thermoelectric power generation sheet is required to be heated after the hot air generated by diesel combustion is radiated in advance, and the temperature of the hot end of the thermoelectric power generation sheet is not more than 200 ℃.
For this purpose, a proper heat dissipation structure needs to be designed.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a heat dissipation structure capable of protecting a thermoelectric generation sheet aiming at the current state of the art.
The utility model adopts the technical proposal for solving the technical problems that: a heat dissipation structure for giving the combustion chamber heat dissipation, this combustion chamber has and postpones burning chamber, characterized in that: comprising
The cover covers the nozzle of the combustion chamber, the cover comprises a cover body and a heat dissipation part, the cover body is provided with a first surface facing the nozzle of the combustion chamber and a second surface opposite to the first surface, and the heat dissipation part is arranged on the first surface and the second surface of the cover body;
the heat conducting piece is sleeved on the periphery of the burning-extending cavity;
the thermoelectric generation piece is provided with a hot end conduction surface, and the hot end conduction surface is attached to the outer wall of the heat conducting piece.
In order to facilitate heat backflow, the cover body is hemispherical and is recessed towards the second face. Thus, there is a converging effect on the heat reaching the enclosure, which is reflected back.
The structure of the heat dissipation part is that the heat dissipation part comprises a plurality of first heat dissipation fins which are arranged on the first surface and distributed at intervals.
In order to improve the heat dissipation effect, the first cooling fins extend along the first surface of the cover body in the axial direction, and all the first cooling fins are distributed at intervals in the circumferential direction.
In order to facilitate heat backflow, the first radiating fin extends to the middle of the first surface, and is located at a distance from the center of the first surface, wherein the distance is the radius of the burning-in cavity. When the heat reaches the middle part of the first surface, the heat flows back through reflection, and the heat dissipation is performed through the first heat dissipation plate.
The structure of the heat dissipation part is that the heat dissipation part comprises a plurality of second heat dissipation fins which are arranged on the second surface and are distributed at intervals.
In order to improve the heat dissipation effect, the second radiating fins comprise core radiating fins and auxiliary radiating fins, and the core radiating fins are provided with fins and are distributed at intervals along the second surface of the housing; two auxiliary cooling fins are respectively arranged on two sides of each core cooling fin, the auxiliary cooling fins and the corresponding core cooling fins are distributed at intervals in parallel, and the lengths of the auxiliary cooling fins are gradually reduced from the core cooling fins to two sides;
the outermost auxiliary radiating fins corresponding to one core radiating fin and the outermost auxiliary radiating fins corresponding to the other adjacent core radiating fin are distributed in a splayed mode, and a radiating air diversion trench is defined between the outermost auxiliary radiating fins and the outermost auxiliary radiating fins.
For mounting, the cover has a mounting portion disposed between the first face and the second face, the mounting portion having a mounting hole.
For air outlet, also include
The shell is provided with a containing cavity and a ventilation opening communicated with the containing cavity;
the combustion chamber is arranged in the accommodating cavity;
the housing is connected with the heat conducting piece and exposed to the ventilation opening, and a space is formed between the periphery of the housing and the ventilation opening to form a ventilation channel.
In order to facilitate air outlet, the heat dissipation part comprises a second heat dissipation fin arranged on the second surface, wherein the second heat dissipation fin comprises a first part positioned in the accommodating cavity and a second part connected with the first part and positioned outside the accommodating cavity;
the outer edge of the first part gradually extends from the inside of the accommodating cavity to the outside of the accommodating cavity to the direction adjacent to the vent opening wall;
the outer edge of the second part gradually extends from the inside of the accommodating cavity to the outside of the accommodating cavity in a direction away from the vent opening wall and extends towards the center of the cover body;
the edges of all the second portions are planar and define a circular plane.
Therefore, the air blown out from the ventilation opening is converged towards the middle part of the cover body, the heat dissipation of the cover body is facilitated, and the formation of warm air with larger air quantity is also facilitated.
In order to dispel the heat for the cold junction of thermoelectric generation piece, hold the intracavity and be provided with:
the heat dissipation piece comprises a bottom plate sleeved on the periphery of the heat conduction piece and heat dissipation fins arranged on the bottom plate, and a space is reserved between two adjacent heat dissipation fins to form a heat dissipation channel communicated with the ventilation opening;
the thermoelectric generation piece is arranged between the heat dissipation piece and the heat conduction piece, and the cold end conduction surface of the thermoelectric generation piece is attached to the bottom plate of the heat dissipation piece;
the heat dissipation part arranged on the first surface of the cover body is propped against the heat conduction piece.
Therefore, the heat dissipation piece is used for dissipating heat for the cold end of the thermoelectric generation piece, and a stable cold field is provided for the cold end of the thermoelectric generation piece, so that the thermoelectric generation piece is favorable for generating electricity.
Compared with the prior art, the utility model has the advantages that: the heat dissipation is carried out on the combustion chamber of the combustion chamber through the housing and the heat conducting piece, so that the heat cannot exceed the heat tolerance value of the thermoelectric generation sheet, the thermoelectric generation sheet is protected, and the service life of the thermoelectric generation sheet is prolonged;
in addition, the heat conducting piece is favorable for providing a stable thermal field for the hot end conducting surface of the thermoelectric generation piece, and is favorable for generating stable and sufficient electric energy for the thermoelectric generation piece.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present utility model;
FIG. 2 is a schematic view of FIG. 1 in the direction A-A;
FIG. 3 is an enlarged schematic view of part B of FIG. 2;
FIG. 4 is a schematic perspective view of a housing in an embodiment of the utility model;
FIG. 5 is a schematic view of another angle of the housing according to an embodiment of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
Referring to fig. 1-5, a preferred embodiment of the present utility model is shown. The heat dissipation structure is used for dissipating heat to the combustion chamber 1, and the combustion chamber 1 is provided with a combustion chamber 11. The heat radiation structure comprises a housing 7, a heat conduction piece 2 and a thermoelectric generation piece 3.
Wherein, the cover shell 7 covers the nozzle of the flame spreading cavity 11, and the cover shell 7 comprises a cover body 71 and a heat dissipation part 72. The cover 71 has a first surface facing the nozzle of the flame-retardant chamber 11 and a second surface opposite to the first surface, and the cover 71 has a mounting portion 73 provided between the first surface and the second surface, and the mounting portion 73 has a mounting hole 731. The heat dissipation portion 72 is provided on the first and second faces of the cover 71. The heat dissipation portion 72 includes a plurality of first heat dissipation fins 721 disposed on the first surface, and the first heat dissipation fins 721 are distributed at intervals. The first fins 721 are circumferentially spaced apart along the first surface of the cover 71. The first heat sink 721 extends to the middle of the first face with a distance from the center of the first face, which is the radius of the burn-in chamber 11. The heat dissipation portion 72 further includes a second heat dissipation fin 722 disposed on the second surface, and a plurality of second heat dissipation fins 722 are distributed at intervals. The second heat sink 722 includes a core heat sink 722a and a sub heat sink 722b, the core heat sink 722a having 10 fins and being circumferentially spaced along the second face of the housing 7; two auxiliary cooling fins 722b are respectively arranged at two sides of each core cooling fin 722b, the auxiliary cooling fins 722b and the corresponding core cooling fins 722a are distributed at intervals in parallel, and the lengths of the auxiliary cooling fins 722b gradually decrease from the core cooling fins 722a to two sides; the outermost secondary fins 722b corresponding to one core fin 722a are splayed from the outermost secondary fins 722b corresponding to an adjacent other core fin 722a to define heat dissipation air flow channels therebetween. Specifically, the second heat sink 722 includes a first portion 7221 located inside the housing cavity 61, and a second portion 7222 connected to the first portion 7221 and located outside the housing cavity 61; the outer edge of the first portion 7221 extends gradually from inside the accommodating chamber 61 to outside the accommodating chamber 61 in a direction adjacent to the opening wall of the vent 62; the outer edges of the second portion 7222 extend from the inside of the accommodating chamber 61 to the outside of the accommodating chamber 61 in a direction away from the opening wall of the vent 62 and toward the center of the cover 71, and the edges of all the second portions 7222 are planar to define a circular plane. The cover shell 7 has the following effects that firstly, the heat dissipation of the combustion chamber 1 is facilitated, and secondly, the middle part of the cover body 71 is beneficial to the backflow of hot air after reaching; thirdly, the hot air blown out from the hot air outlet 62 is facilitated to be converged toward the middle part of the cover 71 (the arrow in fig. 3 indicates the flow direction of the hot air), which is favorable for radiating the heat of the cover 7 and also favorable for forming warm air with larger air volume.
The heat conducting piece 2 is sleeved on the periphery of the burning-spreading cavity 11. The heat radiating portion 72 provided on the first surface of the cover 71 abuts against the heat conductive member 2. Specifically, the heat conductive member 2 includes an annular wall 21 fitted around the outer periphery of the combustion chamber 11 of the combustion chamber 1, and an extension 22 extending from the annular wall 21 toward the combustion chamber 11. The extension 22 is plate-shaped and radially extends with the combustion chamber 11 as a center; the plurality of extension portions 22 are circumferentially spaced around the combustion chamber 11. The outer wall of the heat conductive member 2 has a mounting groove 23 for mounting the bottom of the thermoelectric generation sheet 3.
Preferably, the thermoelectric generation sheet 3 has a hot end conduction surface 31 and a cold end conduction surface 32, and the hot end conduction surface 31 is fitted with the groove bottom of the installation groove 23 of the heat conductive member 2; the thermoelectric generation sheet 3 is disposed between the heat conductive member 2 and the heat dissipation member 4. The thermoelectric generation sheet 3 is preferably a semiconductor thermoelectric generation sheet. The thermoelectric generation pieces 3 are a plurality of and are distributed on the outer wall of the heat conducting piece 2 at intervals.
Also included are a housing 6 and a blower assembly 400, the housing 6 having a receiving chamber 61, a vent 62 in communication with the receiving chamber 61; the combustion chamber is disposed within the accommodation chamber 61; the cover 7 is connected to the heat conductive member 2 and exposed to the ventilation opening 62, and a space is provided between the outer periphery of the cover 7 and the ventilation opening 62 to form a ventilation passage. A heat dissipation member 4 is arranged in the accommodating cavity 61, the heat dissipation member 4 comprises a bottom plate 41 sleeved on the periphery of the heat conduction member 2 and heat dissipation fins 42 arranged on the bottom plate 41, and a space is arranged between two adjacent heat dissipation fins 42 to form a heat dissipation channel communicated with the ventilation opening 62; the thermoelectric generation sheet 3 is disposed between the heat sink 4 and the heat conductive member 2, and the cold end conduction surface 32 thereof is bonded to the bottom plate 41 of the heat sink 4.
The working principle is as follows.
The heat energy generated by the combustion is fully absorbed by the heat conducting piece 2 and then transferred to the hot end conduction surface 31 of the thermoelectric generation sheet 3 so as to provide a stable thermal field for the thermoelectric generation sheet 3, and the heat radiating piece 4 cools the cold end of the thermoelectric generation sheet 3, so that the thermoelectric generation sheet 3 is facilitated to generate stable and sufficient electric energy.
Because the heat value of combustion is higher, for example, the temperature of hot air generated during diesel combustion is higher than 400 ℃, and exceeds the tolerance value of the semiconductor thermoelectric generation sheet, the heat conduction member 2 and the housing 7 are used for radiating heat, and then the hot end of the semiconductor thermoelectric generation sheet is heated, so that the temperature of the hot end of the thermoelectric generation sheet 3 does not exceed 200 ℃, the thermoelectric generation sheet 3 is protected, and the service life of the thermoelectric generation sheet 3 is prolonged.
In addition, the blowing assembly 400 blows through the heat sink 4 to form hot wind, which is used for heating.
Claims (10)
1. A heat radiation structure for radiating heat from a combustion chamber (1), the combustion chamber (1) having a combustion chamber (11), characterized in that: comprising
A cover (7) covering the nozzle of the combustion chamber (11), the cover (7) comprising a cover body (71) and a heat dissipation part (72), the cover body (71) having a first face facing the nozzle of the combustion chamber (11), a second face opposite to the first face, the heat dissipation part (72) being arranged on the first face and the second face of the cover body (71);
the heat conducting piece (2) is sleeved on the periphery of the burning-extending cavity (11);
the thermoelectric generation sheet (3) is provided with a hot end conduction surface (31), and the hot end conduction surface (31) is attached to the outer wall of the heat conduction member (2).
2. The heat dissipating structure of claim 1, wherein: the cover (71) is hemispherical and is recessed toward the second surface.
3. The heat dissipating structure of claim 1, wherein: the heat dissipation part (72) comprises a plurality of first heat dissipation fins (721) arranged on the first surface, wherein the first heat dissipation fins (721) are distributed at intervals; the first cooling fins (721) are circumferentially spaced along the first face of the cover (71).
4. A heat dissipating structure according to claim 3, wherein: the first cooling fin (721) extends to the middle of the first surface and is located at a distance from the center of the first surface, wherein the distance is the radius of the burning-spreading cavity (11).
5. The heat dissipating structure of claim 1, wherein: the heat dissipation part (72) comprises a plurality of second heat dissipation fins (722) arranged on the second surface, and the second heat dissipation fins (722) are distributed at intervals.
6. The heat dissipating structure of claim 5, wherein: the second radiating fins (722) comprise core radiating fins (722 a) and auxiliary radiating fins (722 b), wherein the core radiating fins (722 a) are 10 in number and are distributed at intervals along the second circumferential direction of the housing (7); two auxiliary radiating fins (722 b) are respectively arranged at two sides of each core radiating fin (722 a), the auxiliary radiating fins (722 b) and the corresponding core radiating fins (722 a) are distributed at intervals in parallel, and the lengths of the auxiliary radiating fins (722 b) gradually decrease from the core radiating fins (722 a) to two sides;
the outermost auxiliary radiating fins (722 b) corresponding to one core radiating fin (722 a) and the outermost auxiliary radiating fins (722 b) corresponding to the adjacent other core radiating fin (722 a) are distributed in a splayed mode, and a radiating air diversion trench is defined between the two auxiliary radiating fins.
7. The heat dissipating structure of claim 1, wherein: the cover (71) has a mounting portion (73) disposed between the first surface and the second surface, the mounting portion (73) having a mounting hole (731).
8. The heat dissipating structure of claim 1, wherein: and also comprises
A housing (6) having a housing chamber (61) and a vent (62) communicating with the housing chamber (61);
the combustion chamber (1) is arranged in the accommodating cavity (61);
the housing (7) is connected with the heat conducting piece (2) and is exposed out of the ventilation opening (62), and a space is formed between the periphery of the housing (7) and the ventilation opening (62) to form a ventilation channel.
9. The heat dissipating structure of claim 8, wherein: the heat sink (72) comprises a second heat sink (722) arranged on the second face, the second heat sink (722) comprising a first portion (7221) located inside the housing cavity (61), a second portion (7222) connected to the first portion (7221) and located outside the housing cavity (61);
the outer edge of the first part (7221) gradually extends from the inside of the accommodating cavity (61) to the outside of the accommodating cavity (61) to the direction adjacent to the mouth wall of the ventilation opening (62);
the outer edge of the second part (7222) gradually extends from the inside of the accommodating cavity (61) to the outside of the accommodating cavity (61) in a direction away from the opening wall of the ventilation opening (62) and extends towards the center of the cover body (71);
the edges of all the second portions (7222) are planar, defining a circular plane.
10. The heat dissipating structure of claim 8, wherein: the accommodating cavity (61) is internally provided with:
the heat dissipation part (4) comprises a bottom plate (41) sleeved on the periphery of the heat conduction part (2), and heat dissipation fins (42) arranged on the bottom plate (41), wherein a space is reserved between two adjacent heat dissipation fins (42) to form a heat dissipation channel communicated with the ventilation opening (62);
the thermoelectric generation piece (3) is arranged between the heat dissipation piece (4) and the heat conduction piece (2), and the cold end conduction surface (32) of the thermoelectric generation piece is attached to the bottom plate (41) of the heat dissipation piece (4);
a heat dissipation portion (72) provided on a first surface of the cover (71) abuts against the heat conductive member (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322000898.XU CN220472419U (en) | 2023-07-27 | 2023-07-27 | Heat dissipation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322000898.XU CN220472419U (en) | 2023-07-27 | 2023-07-27 | Heat dissipation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220472419U true CN220472419U (en) | 2024-02-09 |
Family
ID=89805767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322000898.XU Active CN220472419U (en) | 2023-07-27 | 2023-07-27 | Heat dissipation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220472419U (en) |
-
2023
- 2023-07-27 CN CN202322000898.XU patent/CN220472419U/en active Active
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