CN104837315A - Piezoelectric driving radiating module - Google Patents
Piezoelectric driving radiating module Download PDFInfo
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- CN104837315A CN104837315A CN201510122048.4A CN201510122048A CN104837315A CN 104837315 A CN104837315 A CN 104837315A CN 201510122048 A CN201510122048 A CN 201510122048A CN 104837315 A CN104837315 A CN 104837315A
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- heat exchange
- piezoelectric vibrator
- power part
- piezoelectric
- exchange department
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Abstract
The present invention relates to a piezoelectric driving radiating module. The piezoelectric driving radiating module comprises a power part and a heat exchange part, wherein the power part comprises two piezoelectric oscillators and a power part matrix. A fluid driving capability that a gas enters from an inflow hole of the power part and is discharged from an outflow hole of the power part is formed by a special channel design, and the heat exchange part comprises a heat exchange part bottom plate and a plurality of flow division bodies. When working, a heating device is attached to the lower surface of the heat exchange part bottom plate tightly, the heat of the heating device is transmitted to the flow division bodies of the heat exchange part via the heat exchange part bottom plate, the gas enters from the inflow hole of the power part of the radiating module and is discharged from the outflow hole of the power part, and the gas discharged from the outflow hole of the power part flows to the flow division bodies of the heat exchange part, so that the heat transmitted from the heating device to the heat exchange part is diffused to the surrounding air to realize the heat radiation. The piezoelectric driving radiating module of the present invention has the advantages of being simple in structure and small in size, being convenient for the mass production and the miniaturization, etc.
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, from power part discharge gas flow through each shunting body of heat exchange department, 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, heat exchange department.
Described power part comprises the first piezoelectric vibrator, the second piezoelectric vibrator and power part matrix, wherein: the first piezoelectric vibrator is identical with the second piezoelectric vibrator structure, 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.
Power part matrix is a flat rectangular block, is furnished with the first piezoelectric vibrator mounting groove at the end face of power part matrix, and the degree of depth of described first piezoelectric vibrator mounting groove is greater than the first piezoelectric vibrator thickness and the first piezoelectric vibrator center deformation peak value sum; Have the second piezoelectric vibrator mounting groove in the sole arrangement of power part matrix, the degree of depth of described second piezoelectric vibrator mounting groove is greater than the second piezoelectric vibrator thickness and the second piezoelectric vibrator center deformation peak value sum; Between the first piezoelectric vibrator mounting groove and the second piezoelectric vibrator mounting groove bottom surface, arrange an interstitial hole run through, the diameter of section of interstitial hole is less than the diameter of section of mounting groove; First piezoelectric vibrator is arranged in the first piezoelectric vibrator mounting groove, second piezoelectric vibrator is arranged in the second piezoelectric vibrator mounting groove, two piezoelectric vibrators after installation and described interstitial hole form the middle chamber of a sealing, and reciprocal change occurs along with the vibration of piezoelectric vibrator the volume of described middle chamber.At the side arrangement flow-out hole of power part matrix, described flow-out hole cross section is rectangle, described middle chamber is communicated with extraneous air by described flow-out hole, the depth of section of described flow-out hole is less than the height of middle chamber, be furnished with inflow hole in the vertical direction of described flow-out hole, described inflow hole runs through power part matrix and through with described flow-out hole.
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 in each row, shunting body is uniformly distributed, and adjacent two row's shunting body interlaced arrangement.
Described heat exchange section fluid cross-section can be circle, ellipse, triangle, rectangle, pentagon, U-shaped, rhombus.
Described power part flow-out hole is just arranged heat exchange department leading flank.
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; In the power part of driving type piezoelectric actuator heat radiation module there is reciprocal transformation and distortion sensing increase simultaneously cavity volume direction (or sensing reduces cavity volume direction simultaneously) in two piezoelectric vibrators under the effect of alternating voltage, there is back and forth change in the volume of middle chamber, cause gas to flow through flow-out hole and inflow hole, form local depression at the intersectional region of flow-out hole and inflow hole; When middle cavity volume increases, middle chamber internal pressure reduces, extraneous gas is formed from flow-out hole suction middle chamber and sucks high velocity air, and described suction high velocity air forms local depression in runner confluence, and the gas sucked from inflow hole enters middle chamber along with sucking high velocity air; When middle chamber volume reduces, middle chamber internal pressure rises, in middle chamber, gas is formed along flow-out hole and discharges high velocity air, and described discharge high velocity air forms local depression in runner confluence, and the gas flowed into from inflow hole is discharged from flow-out hole along with 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; From power part flow-out hole discharge gas 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.
Accompanying drawing explanation
Fig. 1 is driving type piezoelectric actuator heat emission module structure schematic diagram;
Fig. 2 is driving type piezoelectric actuator heat radiation module power part structural representation;
Fig. 3 is driving type piezoelectric actuator heat radiation module heat exchange department structural representation.
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, driving type piezoelectric actuator heat radiation module comprises power part 1, heat exchange department 2.
Described power part comprises power part matrix 11, first piezoelectric vibrator 12, second piezoelectric vibrator 13 wherein:
First piezoelectric vibrator 12 is thin sheets of piezoelectric material 121 formations bonding with elastic base plate 122, and the second piezoelectric vibrator 13 is thin sheets of piezoelectric material 131 formations bonding with elastic base plate 132.
Power part matrix 11 is flat rectangular blocks, the end face of power part matrix 11 arranges the first piezoelectric vibrator mounting groove 14, the sole arrangement second piezoelectric vibrator mounting groove 15 of power part matrix 11, the degree of depth of the first piezoelectric vibrator mounting groove 14 is greater than gross thickness and the first piezoelectric vibrator 12 center deformation peak value sum of the first piezoelectric vibrator 12, the degree of depth of the second piezoelectric vibrator mounting groove 15 is greater than gross thickness and the second piezoelectric vibrator 13 center deformation peak value sum of the second piezoelectric vibrator 13, a centre bore 16 run through is arranged between two piezoelectric vibrator mounting groove bottom surfaces, the diameter of described centre bore 16 is less than the diameter of described piezoelectric vibrator mounting groove.
Described first piezoelectric vibrator 12 is arranged in the first piezoelectric vibrator mounting groove 14, and described second piezoelectric vibrator 13 is arranged in the second piezoelectric vibrator mounting groove 15, and after installing, two piezoelectric vibrators and matrix 11 together form a middle chamber sealed 17.
Arrange a flow-out hole 18 in the side of power part matrix 11, described flow-out hole 18 cross section is rectangle, and the depth of section of described flow-out hole 18 is less than the degree of depth of middle chamber 17, and middle chamber 17 is communicated with extraneous air by described flow-out hole 18;
Arrange an inflow hole 19 in the vertical direction of described flow-out hole 18, this inflow hole 19 cross section is rectangle, and described inflow hole 19 level runs through two sides of power part matrix 11 and through with described flow-out hole 18;
Described heat exchange department 2 is made up of heat exchange department base plate 21 and shunting body 22, wherein:
Described heat exchange department base plate 21 is rectangular thin plate; Some shunting bodies 22 are dividing in a row with heat exchange department base plate leading flank 211 length direction and each row's shunting body 22 is uniformly distributed, adjacent two row's shunting body 22 interlaced arrangement;
During work, the bottom surface of heat exchange department base plate 21 is close to heater members and is arranged, the heat that heater members sends is transmitted to each shunting body 22 of heat exchange department by heat exchange department base plate 21; For the power part 1 of driving type piezoelectric actuator heat radiation module, air-flow enters from the inflow hole 19 of power part 1, discharge from the flow-out hole 18 of power part 1, from power part flow-out hole 18 discharge gas flow through each shunting body 22 of heat exchange department, the heat diffusion of heat exchange department 2 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 (1) and heat exchange department (2); Described power part (1) is made up of power part matrix (11), the first piezoelectric vibrator (12), the second piezoelectric vibrator (13), wherein: described power part matrix (11) is a flat rectangular block, a pair piezoelectric vibrator mounting groove is arranged symmetrically with at its end face and bottom surface, be respectively the first piezoelectric vibrator mounting groove (14) and the second piezoelectric vibrator mounting groove (15), between two mounting groove bottom surfaces, arrange a centre bore (16) run through; Described first piezoelectric vibrator (12) is arranged in the first piezoelectric vibrator mounting groove (14), described second piezoelectric vibrator (13) is arranged in the second piezoelectric vibrator mounting groove (15), and described first piezoelectric vibrator (12) and the second piezoelectric vibrator (13) form middle chamber (17) with the centre bore (16) of described power part matrix (11); Side arrangement one flow-out hole (18) of described power part matrix (11), described flow-out hole (18) cross section is rectangle; Middle chamber (17) is communicated with extraneous air by described flow-out hole (18); The inflow hole (19) run through with described flow-out hole (18) is arranged in the vertical direction of flow-out hole (18); Described heat exchange department (2) is made up of heat exchange department base plate (21) and shunting body (22), wherein: described heat exchange department base plate (21) is rectangular thin plate; Each described shunting body (22) vertical distribution is on heat exchange department base plate (21), some shunting bodies (22) are dividing in a row with heat exchange department leading flank (211) length direction, in each row, shunting body (22) is uniformly distributed, and adjacent two row's shunting body (22) interlaced arrangement; Described power part flow-out hole (18) is just arranged heat exchange department leading flank (211).
2. driving type piezoelectric actuator heat radiation module according to claim 1, it is characterized in that: described first piezoelectric vibrator (12) second piezoelectric vibrator (13) structure is identical, adopt and be pasted onto by a slice thin sheets of piezoelectric material the single-chip structure that elastic base plate is formed, or be pasted onto by two panels thin sheets of piezoelectric material the double wafer structure that elastic base plate 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 described shunting body (32) can be circle, ellipse, triangle, rectangle, pentagon, U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510122048.4A CN104837315A (en) | 2015-03-20 | 2015-03-20 | Piezoelectric driving radiating module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510122048.4A CN104837315A (en) | 2015-03-20 | 2015-03-20 | Piezoelectric driving radiating module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104837315A true CN104837315A (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510122048.4A Pending CN104837315A (en) | 2015-03-20 | 2015-03-20 | Piezoelectric driving radiating module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104837315A (en) |
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2015
- 2015-03-20 CN CN201510122048.4A patent/CN104837315A/en active Pending
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150812 |
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| WD01 | Invention patent application deemed withdrawn after publication |