CN204425882U - A kind of driving type piezoelectric actuator heat radiation module - Google Patents
A kind of driving type piezoelectric actuator heat radiation module Download PDFInfo
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- CN204425882U CN204425882U CN201520157848.5U CN201520157848U CN204425882U CN 204425882 U CN204425882 U CN 204425882U CN 201520157848 U CN201520157848 U CN 201520157848U CN 204425882 U CN204425882 U CN 204425882U
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Abstract
The utility model relates to a kind of driving type piezoelectric actuator heat radiation module, comprise: power part, diffusion part and heat exchange department, wherein power part comprises a piezoelectric vibrator and two cavity parts, form gas by special runner design to enter from power part inflow hole, from the fluid driving force that power part flow-out hole is discharged; Diffusion part comprises diffusion part fin and diffusion part base plate; Heat exchange department comprises heat exchange department base plate and some shunting bodies; During work, heater members is close to heat exchange department base plate bottom surface, the heat of heater members passes to each shunting body of heat exchange department through heat exchange department base plate, gas enters from heat radiation module power part inflow hole, discharge from power part flow-out hole, enter diffusion part, after the diffusion of diffusion part fin, flow through each shunting body of heat exchange department, the heat diffusion of heat exchange department will be transmitted to by heater members in surrounding air, realize heat radiation.The utility model have structure simple, be convenient to produce in enormous quantities, volume is little is convenient to microminiaturization and the advantage such as the life-span is long.
Description
Technical field
The present invention relates to a kind of heat radiation module, be specifically related to a kind of piezoelectric element that utilizes as the heat radiation module in system dynamic source.
Background technology
Along with the fast development of electronics and information industry, heater members high speed, high frequency and integrated its caloric values that make such as central processing unit increase severely, as got rid of these heats not in time, the rising of heater members own temperature will be caused, and then causing the damage of heater members or the reduction of its performance, the module that therefore dispels the heat is widely used in this field.Traditional heat-dissipating module power part is generally centrifugal fan, and institute takes up space larger.Utilize piezoelectric as system dynamic source in the present invention, when producing reciprocal transformation under the effect of piezoelectric vibrator at alternating voltage, make the volume of heat radiation module power part airtight cavity that back and forth change occur, and in conjunction with special runner design, produce gas-powered ability, realize the heat sinking function of heat radiation module.This driving type piezoelectric actuator heat radiation module can be applicable to the aspects such as the active cooling in instrument and meter, checkout equipment and mechano-electronic field, has that structure is simply convenient to produce in enormous quantities, volume is little is convenient to the advantages such as microminiaturized.
Summary of the invention
The invention provides one utilizes piezoelectric as power source, driving gas enters from heat radiation module power part inflow hole, flow-out hole is discharged, the gas of discharging from power part flows through each shunting body of heat exchange department after the diffusion of diffusion part fin, the heat diffusion of heat exchange department will be passed to by heater members in surrounding air, realize heat radiation.The present invention has that structure is simply convenient to produce in enormous quantities, volume is little is convenient to the advantages such as microminiaturized.
For achieving the above object, the invention provides a kind of driving type piezoelectric actuator heat radiation module, comprising power part, diffusion part and heat exchange department.
Described power part comprises piezoelectric vibrator, the first cavity part and the second cavity part, wherein: piezoelectric vibrator employing is pasted onto on elastic base plate by a slice thin sheets of piezoelectric material and forms single-chip structure, or be pasted onto elastic base plate both sides by two panels thin sheets of piezoelectric material and form double wafer structure, piezoelectric vibrator can occur to be out of shape along the cyclic bending of axis direction under the effect of alternating voltage.Described piezoelectric vibrator is made up of piezoelectric ceramic, piezoelectricity ferro material, piezopolymer, piezo-electricity composite material one or a combination set of.
Described first cavity part and described second cavity part is flat rectangular block and inside is furnished with the first cavity slot and the second cavity slot respectively; Described first cavity slot is identical with the diameter of section of described second cavity slot, and both degree of depth are identical and be greater than the displacement peak value of piezoelectric vibrator central point; Described piezoelectric vibrator is arranged between described first cavity slot and described second cavity slot, forms with the first cavity slot the first cavity sealed, and forms with the second cavity slot the second cavity sealed; The diameter of section of described piezoelectric vibrator mounting groove is greater than the diameter of section of described first cavity slot and the degree of depth is greater than the gross thickness of described piezoelectric vibrator and described piezoelectric vibrator central point displacement peak value sum; Be furnished with the first flow-out hole and the second flow-out hole that described first cavity and described second cavity are communicated with extraneous air respectively in described first cavity part and the side of described second cavity part, described first flow-out hole is identical with described second flow-out hole sectional dimension and be positioned at the same side of power part; In side arrangement and the vertical first through inflow hole of described first flow-out hole of described first cavity part, in side arrangement and the vertical second through inflow hole of described second flow-out hole of described second cavity part, described first inflow hole and described second inflow hole are all through holes;
Described diffusion part is made up of diffusion part base plate and fin, wherein: described diffusion part base plate is rectangular thin plate; Described fin is foil and vertical with diffusion part base plate, comprises central fins and side fin; Described central fins is rectangle and the centre position of two sides about being positioned at diffusion part base plate; Described side fin is that axial symmetry is arranged with central fins; Each described side fin is projected as a level and smooth camber line on diffusion part base plate; The often pair of symmetric side fin is less near diffusion part base plate leading flank place spacing, and along with away from diffusion part base plate leading flank, spacing increases; Outermost two symmetric side fins are forming diffusion part air intake near diffusion part base plate leading flank place, are forming diffusion part gas outlet near diffusion part floor rear face place; On described diffusion part base plate, the quantity of fin can adjust as the case may be.
Described heat radiation module heat exchange department is made up of heat exchange department base plate and shunting body, wherein: described heat exchange department base plate is rectangular thin plate; Each described shunting body vertical distribution is on heat exchange department base plate, and some shunting bodies are dividing in a row with heat exchange department leading flank length direction, and each row's shunting body is uniformly distributed, and adjacent two row's shunting body interlaced arrangement; In heat exchange department, the row of shunting body and the quantity of often arranging shunting body can adjust as the case may be.
Described heat exchange section fluid cross-section can be circle, ellipse, triangle, rectangle, pentagon, U-shaped, rhombus.
Described diffusion part air intake is just being arranged described power part first flow-out hole and the second flow-out hole and the size of described diffusion part air intake and the first flow-out hole of power part and the second flow-out hole measure-alike, is just arranged heat exchange department leading flank described diffusion part gas outlet.
During work, the bottom surface of heat exchange department base plate is close to heater members and is arranged, the heat that heater members sends is transmitted to each shunting body of heat exchange department by heat exchange department base plate; There is reciprocal transformation in the piezoelectric vibrator in the power part of driving type piezoelectric actuator heat radiation module, the volume of the first cavity and the second cavity increases a reduction along with the motion one of piezoelectric vibrator, and two cavity volume variation tendencies are contrary under the effect of alternating voltage; There is back and forth change in the volume due to cavity, causes gas to flow through flow-out hole and inflow hole, forms local depression at the intersectional region of flow-out hole and inflow hole; When cavity volume increases, cavity internal pressure reduces, extraneous gas passes through flow-out hole suction chamber body and forms suction high velocity air, and described suction high velocity air forms local depression at runner intersectional region, and the gas sucked from inflow hole enters cavity along with sucking high velocity air; When cavity volume reduces, inside cavity pressure increase, in cavity, gas is formed along flow-out hole and discharges high velocity air, and described discharge high velocity air forms local depression at runner intersectional region, and the gas flowed into from inflow hole is discharged from flow-out hole along with discharging high velocity air; In the heat radiation module power part course of work, define gas suck from inflow hole, from the gas-powered ability that flow-out hole is discharged; The gas of discharging from power part first flow-out hole and the second flow-out hole enters diffusion part, flows through each shunting body of heat exchange department, will be transmitted to the heat diffusion of heat exchange department in surrounding air, realize heat radiation by heater members after being diffused the fin diffusion in portion.
Accompanying drawing explanation
Fig. 1 is structure and the assembly relation schematic diagram of each parts first angle in the present invention.
Fig. 2 is structure and the assembly relation schematic diagram of each parts second angle in the present invention.
Fig. 3 is medium power portion of the present invention structural representation.
Fig. 4 is diffusion structures schematic diagram in the present invention.
Fig. 5 is the vertical view of diffusion part in the present invention.
Fig. 6 is the structural representation of heat exchange department in the present invention.
Embodiment
Be described in detail the execution mode of driving type piezoelectric actuator heat radiation module of the present invention below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, driving type piezoelectric actuator heat radiation module comprises power part I, diffusion part II and heat exchange department III
Described power part I comprises piezoelectric vibrator 1, first cavity part 2 and the second cavity part 3, wherein:
Described piezoelectric vibrator 1 adopts to be pasted onto on elastic base plate 12 by a slice thin sheets of piezoelectric material 11 and forms single-chip structure.
Described first cavity part 2 is flat rectangular blocks, first cavity part upper bottom surface 25 is furnished with piezoelectric vibrator mounting groove 26, described piezoelectric vibrator 1 is arranged in described piezoelectric vibrator mounting groove 26, and the degree of depth of described piezoelectric vibrator mounting groove 26 is greater than gross thickness and the described piezoelectric vibrator 1 central point displacement peak value sum of described piezoelectric vibrator 1; Be furnished with the first cavity slot 23 in the bottom centre of described piezoelectric vibrator mounting groove 26, the degree of depth of described first cavity slot 23 is greater than the largest motion amplitude of piezoelectric vibrator 1 central point and the diameter of section of described first cavity slot 23 is less than the diameter of section of described piezoelectric vibrator mounting groove 26; Piezoelectric vibrator 1 after installation and the first cavity slot 23 form the first cavity 24 sealed; Described second cavity part 3 is flat rectangular blocks, arrange the second cavity slot 33 at the second cavity part bottom surface 35, the degree of depth of described second cavity slot 33 is greater than the largest motion amplitude of described piezoelectric vibrator 1 central point and the diameter of section of described second cavity slot 33 is identical with described first cavity slot 23; Described first cavity part upper bottom surface 25 and described second cavity part bottom surface 35 are interconnected sealing; Described second cavity slot 33 forms the second cavity 34 jointly with described piezoelectric vibrator 1; Be furnished with the first flow-out hole 21 in the center of described first cavity part 2 side, described first cavity 24 is communicated with extraneous air by described first flow-out hole 21; Be furnished with the first inflow hole 22 in the vertical direction of described first flow-out hole 21, described first inflow hole 22 runs through the first cavity part 2 and through with described first flow-out hole 21; The second flow-out hole 31 is furnished with in the center of described second cavity part 3 side, described second cavity 34 is communicated with extraneous air by described second flow-out hole 31, be furnished with the second inflow hole 32 in the vertical direction of described second flow-out hole 31, described second inflow hole 32 runs through the second cavity part 3 and through with described second flow-out hole 31; Described first flow-out hole 21 is identical with the sectional dimension of described second flow-out hole 31 and be positioned at the same side of described power part I.
Described diffusion part II is made up of diffusion part base plate 4 and fin 5, wherein: described diffusion part base plate 4 is rectangular thin plate; Described fin 5 is made up of central fins 51 and side fin 52; Described central fins 51 is foil with side fin 52 and vertical with described diffusion part base plate 4; Described central fins 51 is rectangle and is positioned at the centre position of diffusion part base plate left surface 43 and diffusion part base plate right flank 44; Described side fin 52 with central fins 51 for axial symmetry arrange; Each described side fin 52 is projected as a level and smooth camber line on diffusion part base plate 4; The often pair of symmetric side fin 52 is less near diffusion part base plate leading flank 41 place spacing, and along with away from diffusion part base plate leading flank 41, spacing increases; Outermost two symmetric side fins 521 are forming diffusion part air intake 53 near described diffusion part base plate leading flank 41 place, are forming diffusion part gas outlet 54 near diffusion part floor rear face 42 place.
Described heat radiation module heat exchange department III is made up of heat exchange department base plate 6 and shunting body 7, wherein: described heat exchange department base plate 6 is rectangular thin plate; Each described shunting body 7 vertical distribution is on heat exchange department base plate 6, and some shunting bodies 7 are dividing in a row with heat exchange department leading flank 61 length direction, and in each row, shunting body 7 is uniformly distributed, and adjacent two row's shunting body 7 interlaced arrangement.
Described diffusion part air intake 53 is just arranged and the first flow-out hole 21 of the size of described diffusion part air intake 53 and power part I and the measure-alike of the second flow-out hole 31 the first flow-out hole 21 of described power part I and the second flow-out hole 31, is just arranged heat exchange department leading flank 61 described diffusion part gas outlet 54.
During work, the bottom surface of heat exchange department base plate 6 is close to heater members and is arranged, the heat that heater members sends is transmitted to each shunting body 7 of described heat exchange department III by heat exchange department base plate 6; For the power part I of driving type piezoelectric actuator heat radiation module, air-flow enters from the first inflow hole 22 of power part I and the second inflow hole 32, discharge from the first flow-out hole 21 of power part I and the second flow-out hole 31, enter diffusion part II, gas flows through each shunting body 7 of heat exchange department III after the fin 5 of diffusion part II spreads, the heat diffusion of heat exchange department III will be transmitted to by heater members in surrounding air, realize heat radiation.
Claims (3)
1. a driving type piezoelectric actuator heat radiation module, is characterized in that, comprising: power part (I), diffusion part (II) and heat exchange department (III); Described power part (I) comprises piezoelectric vibrator (1), the first cavity part (2) and the second cavity part (3), described first cavity part (2) and described second cavity part (3) is flat rectangular block and inside is furnished with the first cavity slot (23) and the second cavity slot (33) respectively; Described piezoelectric vibrator (1) is arranged between described first cavity slot (23) and described second cavity slot (33), forms with the first cavity slot (23) the first cavity (24) sealed, and forms with the second cavity slot (33) the second cavity (34) sealed; Be furnished with the first flow-out hole (21) and the second flow-out hole (31) that described first cavity (24) and described second cavity (34) are communicated with extraneous air respectively in described first cavity part (2) and the side of described second cavity part (3), described first flow-out hole (21) and described second flow-out hole (31) are positioned at the same side of power part (I); In the side arrangement of described first cavity part (2) through first inflow hole (22) vertical with described first flow-out hole (21), in the side arrangement of described second cavity part (3) through second inflow hole (32) vertical with described second flow-out hole (31), described first inflow hole (22) and described second inflow hole (32) are all through holes; Described diffusion part (II) is made up of diffusion part base plate (4) and fin (5), wherein: described diffusion part base plate (4) is rectangular thin plate; Described fin (5) is vertical with diffusion part base plate (4) for foil, comprises central fins (51) and side fin (52); Described central fins (51) is for rectangle and be positioned at the centre position of diffusion part base plate left surface (43) and right flank (44), some sides fin (52) are with central fins (51) for axial symmetry is arranged, each described side fin (52) is projected as a level and smooth camber line on diffusion part base plate (4); The spacing of often pair of symmetric side fin (52) less near diffusion part base plate leading flank (41) place, and increases along with away from diffusion part base plate leading flank (41) spacing; The outermost a pair symmetrical fin (521) in described side fin (52) is forming diffusion part air intake (53) near diffusion part base plate leading flank (41) place, is forming diffusion part gas outlet (54) near diffusion part floor rear face (42) place; Described heat exchange department (III) is made up of heat exchange department base plate (6) and shunting body (7), wherein: described heat exchange department base plate (6) is rectangular thin plate; Each described shunting body (7) vertical distribution is on heat exchange department base plate (6), some shunting bodies (7) are dividing in a row with heat exchange department leading flank (61) length direction, in each row, shunting body (7) is uniformly distributed, and adjacent two row's shunting body (7) interlaced arrangement; First flow-out hole (21) of described power part (I) and the second flow-out hole (31) are just arranged the air intake (53) of described diffusion part (II), and the size of first flow-out hole (21) of described power part (I) and the second flow-out hole (31) and the air intake (53) of described diffusion part (II) is measure-alike, the gas outlet (54) of described diffusion part (II) is just arranged the leading flank (61) of described heat exchange department (III).
2. driving type piezoelectric actuator heat radiation module according to claim 1, it is characterized in that: described piezoelectric vibrator (1) adopts and is pasted onto the upper single-chip piezoelectric vibrator formed of elastic base plate (12) by a slice thin sheets of piezoelectric material (11), or employing is pasted onto by two panels thin sheets of piezoelectric material (11) the bi-morph piezo-electric oscillator that elastic base plate (12) both sides are formed.
3. driving type piezoelectric actuator according to claim 1 heat radiation module, is characterized in that: the cross sectional shape of the shunting body (7) of described heat exchange department (III) can be circle, ellipse, rhombus, triangle, rectangle, pentagon, U-shaped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520157848.5U CN204425882U (en) | 2015-03-20 | 2015-03-20 | A kind of driving type piezoelectric actuator heat radiation module |
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| CN201520157848.5U CN204425882U (en) | 2015-03-20 | 2015-03-20 | A kind of driving type piezoelectric actuator heat radiation module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI663507B (en) * | 2018-04-09 | 2019-06-21 | 中原大學 | Miniature cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI663507B (en) * | 2018-04-09 | 2019-06-21 | 中原大學 | Miniature cooling system |
| US11306711B2 (en) * | 2018-04-09 | 2022-04-19 | Chung-Yuan Christian University | Miniature cooling system |
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Effective date of registration: 20210311 Address after: Room a602-2, 99 Keji 1st Street, building 18, innovation and entrepreneurship square, science and technology innovation city, high tech Zone, Harbin, Heilongjiang Province Patentee after: Zhongmian precision machinery (Harbin) Co.,Ltd. Address before: Room 305, 3rd floor, no.1357 Jinhu Road, high tech Zone, Changchun City, Jilin Province 130000 Patentee before: CHANGCHUN LONGMEI TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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Effective date of registration: 20220526 Address after: 215200 room 1303-3, business incubation base of science and Innovation Park, South Third Ring Road (Xinan Village), Shengze Town, Wujiang District, Suzhou City, Jiangsu Province Patentee after: Zituo electromechanical precision technology (Suzhou) Co.,Ltd. Address before: Room a602-2, 99 Keji 1st Street, building 18, innovation and entrepreneurship square, science and technology innovation city, high tech Zone, Harbin, Heilongjiang Province Patentee before: Zhongmian precision machinery (Harbin) Co.,Ltd. |
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Effective date of registration: 20221110 Address after: 311222 Room 7030, Building 2, No. 2098, South Hezhuang Road, Airport Economic Zone, Xiaoshan District, Hangzhou, Zhejiang Patentee after: Hangzhou Lizi Fluid Technology Co.,Ltd. Address before: 215200 room 1303-3, business incubation base of science and Innovation Park, South Third Ring Road (Xinan Village), Shengze Town, Wujiang District, Suzhou City, Jiangsu Province Patentee before: Zituo electromechanical precision technology (Suzhou) Co.,Ltd. |
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