CN105157272B - A kind of driving type piezoelectric actuator minitype thermoacoustic refrigerator machine - Google Patents
A kind of driving type piezoelectric actuator minitype thermoacoustic refrigerator machine Download PDFInfo
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- CN105157272B CN105157272B CN201510388614.6A CN201510388614A CN105157272B CN 105157272 B CN105157272 B CN 105157272B CN 201510388614 A CN201510388614 A CN 201510388614A CN 105157272 B CN105157272 B CN 105157272B
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- 238000005057 refrigeration Methods 0.000 abstract description 13
- 238000010276 construction Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000003486 chemical etching Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a kind of driving type piezoelectric actuator minitype thermoacoustic refrigerator machine, the refrigeration machine is mainly made up of piezoelectric buzzer, resonatron, regenerator and heat exchanger.Piezoelectric buzzer, hot junction resonatron, hot end heat exchanger are sequentially connected and connect, regenerator is located between hot end heat exchanger and cool end heat exchanger, cool end heat exchanger is followed by the resonatron of one section of closing of one end open, and such hot sound refrigerating machine is formed the loop of a closing, standing wave is produced in this loop.The invention relevant knowledge theoretical according to thermoacoustic, pump fuel factor is produced using standing wave in regenerator, regenerator two ends is produced temperature difference, and is exchanged heat by cool end heat exchanger and hot end heat exchanger with the external world, realizes refrigeration.The refrigeration machine is simple in construction, movement-less part, miniaturization and environmental protection, it is adaptable to the radiating of electronic component.
Description
Technical field
The present invention relates to a kind of refrigerating plant, more particularly to the minitype thermoacoustic refrigerator device applied to electronic applications.
Background technology
With developing rapidly for microelectric technique, constantly strengthen for the refrigeration and cooling requirements in terms of microelectronic component,
Traditional refrigeration radiating device it is impossible to meet requiring, governs the development of microelectric technique.Therefore, research and development is efficient
Miniature refrigerating technology tool be of great significance.
For traditional refrigeration radiating device, hot sound refrigerating machine has simple in construction, high reliability, longevity because of it
Life, movement-less part, non-environmental-pollution, operating temperature range are wide, the low plurality of advantages of energy requirements grade, can more be transported in high frequency
The volume and quality of the lower reduction system of row, it is adaptable to the field such as electronics, information, sensor, MEMS and medical equipment, together
When in terms of national defence and space research also great potential.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of miniature heat of driving type piezoelectric actuator
Acoustic refrigerator, the reliability that solves traditional fan cooling at present and produce is low, noise is big, the problems such as radiate slow.
Technical scheme：To achieve the above object, the technical solution adopted by the present invention is：
A kind of driving type piezoelectric actuator minitype thermoacoustic refrigerator machine, including piezoelectric buzzer, hot junction resonatron, hot end heat exchanger, return
Hot device, cool end heat exchanger and cold end resonatron, the piezoelectric buzzer are connected with one end of hot junction resonatron, the hot junction resonance
The other end of pipe and one end of hot end heat exchanger are connected, and the other end of the hot end heat exchanger and one end of regenerator are connected, institute
State one end of regenerator and one end of cool end heat exchanger to connect, the other end of the cool end heat exchanger and one end of cold end resonatron
Connection, the other end of the cold end resonatron is sealed end；One sine wave is applied to piezoelectric buzzer by signal generator
Signal, standing wave is formed in the minitype thermoacoustic refrigerator machine.
Further, the hot sound refrigerating machine cylinder, diameter 30mm, length 40mm, working frequency 5000HZ.
Further, the piezoelectric buzzer diameter 30mm, working frequency 5000Hz, sound pressure level is about 85dB.
Further, the hot end heat exchanger and cool end heat exchanger are plate stack structure, and it is 0.1mm, plate that plate, which folds gap,
Thickness is 0.1mm, and internal diameter is 28mm, and external diameter is 30mm；And the length of the hot end heat exchanger is cool end heat exchanger length
2 times.
Further, the length 0.4mm of the hot end heat exchanger, the length 0.2mm of cool end heat exchanger.
Further, described regenerator is plate stack structure, and it is 0.1mm that plate, which folds gap, and thickness of slab is 0.1mm, and internal diameter is
28mm, external diameter is 30mm, and length is 4.5mm, and the distance of its center position piezoelectric buzzer is 3.5mm.
Further, the length 0.85mm of the hot junction resonatron, the length 28.75mm of cold end resonatron.
Beneficial effect：The advantage that the present invention is provided is as follows：
1. relative to existing fan cooling mode, driving type piezoelectric actuator minitype thermoacoustic refrigerator machine of the invention has more simple
It is single, the higher structure of reliability.The refrigeration machine of the present invention includes piezoelectric buzzer, cold (heat) end heat exchanger, regenerator, cold (heat)
Resonatron is held, a sine wave signal is applied to piezoelectric buzzer by signal generator, standing wave is formed in resonatron.Do not having
In the case of having mechanical movement, driving type piezoelectric actuator minitype thermoacoustic refrigerator function of the invention is effectively freezed.Using this
Simple structure, can improve the radiating efficiency of electronic component, reduce the manufacturing cost of electronic product.
2. the driving type piezoelectric actuator minitype thermoacoustic refrigerator machine movement-less part of the present invention, can improve the reliability of refrigeration, nothing
Abrasion between machinery, can increase the service life.
3. the refrigeration machine of the present invention meets strategy of sustainable development criterion, do not consuming resource and do not producing harmful substance
In the case of, refrigeration is effectively realized, with higher benefit ratio, good economy performance, environmental protection.
, should with good 4. the driving type piezoelectric actuator minitype thermoacoustic refrigerator machine of the present invention is applied to the radiating of electronic component
Use prospect.
Brief description of the drawings
Fig. 1 is the structural representation of the refrigeration machine of the present invention.
Fig. 2 is the variation rule curve figure that refrigerating capacity Q folds length with plate.
Fig. 3 is the variation rule curve figure that consumption sound work(W folds length with plate.
Fig. 4 is the variation rule curve figure that coefficient of performance folds length with plate.
Fig. 5 is the cross-sectional structure figure that regenerator and cold (heat) in the present invention holds heat exchanger.
Fig. 6 is threedimensional model section view diagram of the present invention.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of driving type piezoelectric actuator minitype thermoacoustic refrigerator machine, is cylinder, diameter 30mm, length 40mm, work
Working frequency 5000HZ, including piezoelectric buzzer 1, hot junction resonatron 2, hot end heat exchanger 3, regenerator 4, cool end heat exchanger 5 and cold
Hold resonatron 6.
The piezoelectric buzzer 1 is connected with one end of hot junction resonatron 2, the other end of the hot junction resonatron 2 and hot junction
One end connection of heat exchanger 3, the other end of the hot end heat exchanger 3 is connected with one end of regenerator 4, and the one of the regenerator 4
End is connected with one end of cool end heat exchanger 5, and the other end of the cool end heat exchanger 5 is connected with one end of cold end resonatron 6, described
The other end of cold end resonatron 6 is sealed end；One sine wave signal is applied to piezoelectric buzzer 1 by signal generator,
Standing wave is formed in the driving type piezoelectric actuator minitype thermoacoustic refrigerator machine.
The hot sound refrigerating machine cylinder, diameter 30mm, length 40mm, working frequency 5000HZ.
The diameter 30mm of piezoelectric buzzer 1, working frequency 5000Hz, sound pressure level is about 85dB.The piezoelectric buzzer 1
It is made up of piezoelectric ceramic piece and cone basin.
The hot end heat exchanger 3 and cool end heat exchanger 5 are plate stack structure, and the plate is stacked as using chemical etching process system
Into copper sheet laminating cylindrical structural, plate fold gap be 0.1mm, thickness of slab is 0.1mm, and internal diameter is 28mm,
External diameter is 30mm；And the length of the hot end heat exchanger 2 is 2 times of the length of cool end heat exchanger 5.In the present invention, the hot junction
The length 0.4mm of heat exchanger 2, the length 0.2mm of cool end heat exchanger 5.
Described regenerator 4 is plate stack structure, and the plate is stacked as the stainless steel substrates laminating being made with chemical etching process
Cylindrical structural, plate fold gap be 0.1mm, thickness of slab is 0.1mm, and internal diameter is 28mm, and external diameter is 30mm, and length is
4.5mm, and the distance of its center position piezoelectric buzzer 1 is 3.5mm, is favorably improved hot sound refrigerating machine refrigeration performance,
Improve operating efficiency.
The length 0.85mm of the hot junction resonatron 2, the length 28.75mm of cold end resonatron 6, and add by ABS turning
Work is formed.
The present invention is designed according to thermoacoustic knowwhy.In the case where cold (heat) holds the internal diameter of resonator to fix, plate
Folded thickness determines the folded quantity of plate, and plate is folded thicker, and the folded number of the plate that can be placed is also just smaller, and the folded number of plate is few, phase
The solid interface of stream answered is reduced, and causes the reduction of thermoacoustic effect, the folded thickness of plate is relevant with porosity.Taken it is recommended that plate folds gap
2 times~5 times heat penetrations, therefore take plate to fold gap about 0.1mm.The folded porosity ranges of plate are 0.3 ＜ B ＜ 0.95, each
Individual porosity all folds length in the presence of an optimal plate makes refrigerating efficiency (COP) reach maximum, and porosity is bigger, COP curve energy
The maximum refrigerating efficiency reached is higher, and corresponding plate is folded shorter, when illustrating porosity increase, the logical viscous loss in gas road
Reduce, improve the Sonic heat changing rate of system, therefore take stack thickness to be 0.1mm.Plate is stacked in location in pipe and determines energy
It is no to reach preferably refrigerating efficiency.Program is write by MATLAB, Fig. 2-4 is respectively refrigerating capacity Q, consumption sound work(W, the coefficient of performance
COP folds the variation rule curve figure of length with plate.Consider, take plate to fold length for 4.5mm in the present invention, in regenerator center
Heart position is 3.5mm away from piezoelectric buzzer.
Resonatron is the place that working fluid produces compression and expansion, and it affects the resonant frequency of hot sound refrigerating machine, made
Obtain the waveform in pipe and remain plane wave, and the acoustic energy of a part can be stored.This model machine uses half-wavelength resonatron, resonance
Pipe two ends are the zero point of velocity amplitude, and middle part amplitude maximum, pressure magnitude zero point is located at the middle part of resonatron, and two ends amplitude is most
Greatly.The length of resonatron and the value of diameter, to the sound power input of refrigeration machine, Sonic heat changing efficiency, internal sound work(loss etc. all
Have a great impact.The length of resonatron can determine by L=C/2f formulas, model machine overall length 34.7mm, with reference to regenerator, cold and hot end
The length of heat exchanger and center are obtained, hot junction resonance pipe range 0.85mm, cold end resonance pipe range 28.75mm.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (1)
1. a kind of driving type piezoelectric actuator minitype thermoacoustic refrigerator machine, it is characterised in that：Including piezoelectric buzzer (1), hot junction resonatron
(2), hot end heat exchanger (3), regenerator (4), cool end heat exchanger (5) and cold end resonatron (6), the piezoelectric buzzer (1) with
One end connection of hot junction resonatron (2), the other end of the hot junction resonatron (2) is connected with one end of hot end heat exchanger (3), institute
The other end for stating hot end heat exchanger (3) is connected with one end of regenerator (4), one end of the regenerator (4) and cool end heat exchanger
(5) one end connection, the other end of the cool end heat exchanger (5) is connected with one end of cold end resonatron (6), the cold end resonance
The other end for managing (6) is sealed end；One sine wave signal is applied to piezoelectric buzzer (1) by signal generator, it is micro- at this
Standing wave is formed in type hot sound refrigerating machine；
The hot sound refrigerating machine cylinder, diameter 30mm, length 40mm, working frequency 5000HZ；
Piezoelectric buzzer (1) the diameter 30mm, working frequency 5000Hz, sound pressure level is about 85dB；
The hot end heat exchanger (3) and cool end heat exchanger (5) are plate stack structure, and it is 0.1mm that plate, which folds gap, and thickness of slab is
0.1mm, internal diameter is 28mm, and external diameter is 30mm；And the length of the hot end heat exchanger (2) is cool end heat exchanger (5) length
2 times；
The length 0.4mm of the hot end heat exchanger (2), the length 0.2mm of cool end heat exchanger (5)；
Described regenerator (4) is plate stack structure, and it is 0.1mm that plate, which folds gap, and thickness of slab is 0.1mm, and internal diameter is 28mm, and external diameter is
30mm, length is 4.5mm, and the distance of its center position piezoelectric buzzer (1) is 3.5mm；
The length 0.85mm of the hot junction resonator (2), the length 28.75mm of cold end resonator (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510388614.6A CN105157272B (en) | 2015-07-03 | 2015-07-03 | A kind of driving type piezoelectric actuator minitype thermoacoustic refrigerator machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510388614.6A CN105157272B (en) | 2015-07-03 | 2015-07-03 | A kind of driving type piezoelectric actuator minitype thermoacoustic refrigerator machine |
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| CN105157272A CN105157272A (en) | 2015-12-16 |
| CN105157272B true CN105157272B (en) | 2017-09-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105783140B (en) * | 2016-04-06 | 2018-12-18 | 广东美的制冷设备有限公司 | The cooling device and cooling means of electronic control module in air conditioner and outdoor machine of air-conditioner |
| JP2018071821A (en) * | 2016-10-25 | 2018-05-10 | 三菱電機株式会社 | Thermoacoustic device |
| CN106657504A (en) * | 2016-12-26 | 2017-05-10 | 天津商业大学 | Mobile phone heat dissipation protecting jacket |
| CN108979864A (en) * | 2018-08-08 | 2018-12-11 | 北京航空航天大学 | A kind of miniature gas turbine and regenerator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556360A (en) * | 2004-01-12 | 2004-12-22 | 浙江大学 | Heat sound refrigerator using noise as driving source |
| CN102261712A (en) * | 2011-08-29 | 2011-11-30 | 华北电力大学（保定） | Carbon dioxide station air conditioner driven by industrial noise |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6574968B1 (en) * | 2001-07-02 | 2003-06-10 | University Of Utah | High frequency thermoacoustic refrigerator |
| US20110252810A1 (en) * | 2010-04-20 | 2011-10-20 | King Abdul Aziz City For Science And Technology | Standing wave thermoacoustic piezoelectric refrigerator |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556360A (en) * | 2004-01-12 | 2004-12-22 | 浙江大学 | Heat sound refrigerator using noise as driving source |
| CN102261712A (en) * | 2011-08-29 | 2011-11-30 | 华北电力大学（保定） | Carbon dioxide station air conditioner driven by industrial noise |
Non-Patent Citations (1)
| Title |
|---|
| 平行结构板叠参数对驻波型热声制冷机系统热声性能影响的研究;李超;《万方数据学术论文》;20140917;正文第13-37页 * |
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