CN104929916A - Double-cavity piezoelectric gas pump - Google Patents
Double-cavity piezoelectric gas pump Download PDFInfo
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- CN104929916A CN104929916A CN201510407780.6A CN201510407780A CN104929916A CN 104929916 A CN104929916 A CN 104929916A CN 201510407780 A CN201510407780 A CN 201510407780A CN 104929916 A CN104929916 A CN 104929916A
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Abstract
The invention relates to a double-cavity piezoelectric gas pump which comprises a housing, a gas inlet valve and a gas outlet valve. The housing comprises an upper housing and a lower housing, the gas inlet valve comprises an upper gas inlet valve and a lower gas inlet valve which are communicated with the outside, the gas outlet valve comprises an upper gas outlet valve and a lower gas outlet valve, the upper gas outlet valve is communicated with an upper gas outlet pipe, the lower gas outlet valve is communicated with a lower gas outlet pipe, a double-faced piezoelectric ceramic oscillator is arranged between the upper housing and the lower housing, a sealing ring is arranged between the piezoelectric ceramic oscillator and the upper housing and between the piezoelectric ceramic oscillator and the lower housing respectively, a sealed upper gas cavity is formed between the piezoelectric ceramic oscillator and the upper gas inlet valve and the upper gas outlet valve and the upper housing, a sealed lower gas cavity is formed between the double-faced piezoelectric ceramic oscillator and the lower gas inlet valve and the lower gas outlet valve and the lower housing, and an electrode is arranged at one end of the double-faced piezoelectric ceramic oscillator and is connected with a power line. The double-cavity piezoelectric gas pump is of a single-oscillator driven double-cavity structure, gas amount and pressure are remarkably improved by more than twice, and the double-cavity piezoelectric gas pump is lighter, thinner, lower in powder consumption, lower in noise and quicker in response and is resistant to interference.
Description
Technical field
The invention belongs to gas pump technical field, be specifically related to a kind of two-chamber piezo gas pump.
Background technique
The advantages such as piezo gas pump has volume little compared with conventional air pumps, lightweight, and response is fast, low noise, low power consumption, anti-interference.These advantages make the application of piezo gas pump more and more extensive, but also expose deficiency in the application, and such as flow is little, and outlet pressure is little, and the life-span is short, and the shortcoming such as decay fast.Occur that the reason of these shortcomings is, the driving source of piezo gas pump is piezoelectric ceramics driving piece (hereinafter referred to as piezoelectric vibrator).The performance of piezoelectric vibrator determines piezo gas pump performance to a great extent.The piezoelectric vibrator that the piezoelectric vibrator that current technical specifications lower piezoelectric gas pump uses is one side work, pasted by piezoelectric ceramic and tinsel and make, be difficult to dual face seals, an oscillator can only seal an air cavity, or multiple oscillator seals an air cavity, can not bear high voltage for a long time.So the poor-performing of piezoelectric vibrator, cause piezo gas pump overall performance occurs that flow is little, outlet pressure is little, and the life-span is short, and the shortcoming such as decay fast.
Summary of the invention
The object of the present invention is to provide a kind of two-chamber piezo gas pump using simple oscialltor as driving source.
The technical solution adopted for the present invention to solve the technical problems is: two-chamber piezo gas pump, comprise shell, suction valve and gas outlet valve, described shell comprises upper casing and lower casing, described upper casing is connected by fixing column with lower casing, described suction valve comprises the upper inlet valve and lower inlet valve that are in communication with the outside, described gas outlet valve comprises gas outlet valve and lower gas outlet valve, described upper inlet valve and upper gas outlet valve are individually fixed on upper casing, described lower inlet valve and lower gas outlet valve are individually fixed on lower casing, described upper gas outlet valve is communicated with upper outlet pipe, described lower gas outlet valve is communicated with lower outlet pipe, two-sided piezoelectric ceramic oscillator is provided with between described upper casing and lower casing, two-sided piezoelectric ceramic oscillator and be respectively equipped with seal ring between upper casing and lower casing, described two-sided piezoelectric ceramic oscillator and upper inlet valve, the upper gas chamber of sealing is formed between upper gas outlet valve and upper casing, described two-sided piezoelectric ceramic oscillator and lower inlet valve, the lower air chamber of sealing is formed between lower gas outlet valve and lower casing, one end of described two-sided piezoelectric ceramic oscillator is provided with electrode, described electrode is connected with power line.
Particularly, described suction valve is identical with air outlet valve structure but installation direction is contrary, be cap-shaped structure, the brim of a hat make a circle week as fixing, centre is semicircle ball-type, and thickness is about 0.5mm, and semi-round ball leaves otch, the otch of suction valve is towards two-sided piezoelectric ceramic oscillator, and the otch of gas outlet valve is towards shell and be communicated with outlet pipe.Gas can outwardly, but can not be flowed by semi-round ball outside to inside by semi-round ball, can form the unidirectional restriction of gas flow with this.
Particularly, described upper outlet pipe is connected with total air outlet of threeway with lower outlet pipe, and described threeway is sheathed on the shell of outlet pipe and lower outlet pipe one end.Threeway is flexible glue material, can play good sealing effect, and so upper and lower two-part tolerance pools together and to be flowed out by total air outlet, has significantly improved and throughput and outlet pressure.
Particularly, one end of described shell is provided with power line tail card, and power line is connected with electrode welding through power line tail card.
Particularly, described upper casing is fixedly connected with by five fixing column interference with lower casing.
Particularly, described two-sided piezoelectric ceramic oscillator is pasted by two piezoelectric ceramics and is formed.
Piezoelectric vibrator upper and lower surfaces for driving source, are all sealed to air cavity by seal ring with single two-sided piezoelectric ceramic oscillator by two-chamber piezo gas pump of the present invention.And piezo gas pump oscillator in the past can only seal an air cavity, or multiple oscillator seals an air cavity, never occurs the situation of air cavity number more than element number.A this piezoelectric vibrator drives the structure of two air cavitys to cut the shell space shared by the encapsulation of piezoelectric vibrator electrode welding face on the one hand thus reduced air pump volume, substantially increases overall output tolerance and delivery pressure on the other hand.
The present invention has following beneficial effect:
1, the present invention uses two-sided piezoelectric ceramic oscillator, two-sided piezoelectric ceramic oscillator is pasted by two piezoelectric ceramics and is formed, larger voltage can be born, piezo gas pump is made to have more lasting anti-decay property and longer life-span, avoid the passive vibration of tinsel simultaneously, improve energy conversion efficiency.
2, the present invention's breakthrough use simple oscialltor in the shell construction of gas pump drives double cavity structure, can effect be driven to derive the fluid of two of a two-sided piezoelectric ceramic oscillator drive surface simultaneously, again through three-port structure unification, thus reach tolerance and pressure significantly brings up to twice the above object.
3, piezo gas pump of the present invention is more frivolous compared with existing product, and power consumption is lower, has low noise concurrently simultaneously, and response is fast, jamproof feature.
Through tight Experimental comparison, the output flow of existing piezo gas pump is about 500ml/min, delivery pressure is about 10kPa, 4000h is about to life-span when obviously decaying, and under the identical condition of other parameter, two-chamber piezo gas POF of the present invention is about 1500ml/min, and delivery pressure is about 25kPa, and the life-span is more than 8000h.
Accompanying drawing explanation
Fig. 1 is the structural representation of the gas pump of the embodiment of the present invention 1.
Fig. 2 is the structural representation of the gas pump of the embodiment of the present invention 2.
In figure, 1, upper casing, 2, lower casing, 3, fixing column, 4, two-sided piezoelectric ceramic oscillator, 5, seal ring, 6, electrode, 7, power line tail card, 8, upper inlet valve, 9, upper gas outlet valve, 10, upper outlet pipe, 11, threeway, 12, total air outlet, 13, upper gas chamber, 14, lower inlet valve, 15, lower gas outlet valve, 16, lower air chamber, 17, lower outlet pipe.
Embodiment
Now the present invention is described in detail by reference to the accompanying drawings.
Embodiment 1
As shown in Figure 1, two-chamber piezo gas pump, comprise shell, suction valve and gas outlet valve, one end of described shell is provided with power line tail card 7, described shell comprises upper casing 1 and lower casing 2, described upper casing 1 is connected by fixing column 3 with lower casing 2, described suction valve comprises the upper inlet valve 8 and lower inlet valve 14 that are in communication with the outside, described gas outlet valve comprises gas outlet valve 9 and lower gas outlet valve 15, described upper inlet valve 8 and upper gas outlet valve 9 are individually fixed on upper casing 1, described lower inlet valve 14 and lower gas outlet valve 15 are individually fixed on lower casing 2, described upper gas outlet valve 9 is communicated with upper outlet pipe 10, described lower gas outlet valve 15 is communicated with lower outlet pipe 17, two-sided piezoelectric ceramic oscillator 4 is provided with between described upper casing 1 and lower casing 2, two-sided piezoelectric ceramic oscillator 4 and be respectively equipped with seal ring 5 between upper casing 1 and lower casing 2, described two-sided piezoelectric ceramic oscillator 4 and upper inlet valve 8, the upper gas chamber 13 of sealing is formed between upper gas outlet valve 9 and upper casing 1, described two-sided piezoelectric ceramic oscillator 4 and lower inlet valve 14, the lower air chamber 16 of sealing is formed between lower gas outlet valve 15 and lower casing 2, one end of described two-sided piezoelectric ceramic oscillator 4 is provided with electrode 6, described electrode 6 is welded to connect with the power line through power line tail card 7.
Particularly, described suction valve is identical with air outlet valve structure but installation direction is contrary, be cap-shaped structure, the brim of a hat make a circle week as fixing, centre is semicircle ball-type, semi-round ball leaves otch, and the otch of suction valve is towards two-sided piezoelectric ceramic oscillator 4, and the otch of gas outlet valve is towards shell and be communicated with outlet pipe.
Particularly, described upper casing 1 is fixedly connected with by the interference of five fixing columns 3 with lower casing 2.
Gas in upper gas chamber 13 is flowed out by upper outlet pipe 10, and the gas in lower air chamber 16 is flowed out by lower outlet pipe 17, and this Novel dual-cavity piezo gas pump can realize twin flue and give vent to anger.
Embodiment 2
As shown in Figure 2, two-chamber piezo gas pump, comprise shell, suction valve and gas outlet valve, one end of described shell is provided with power line tail card 7, described shell comprises upper casing 1 and lower casing 2, described upper casing 1 is connected by fixing column 3 with lower casing 2, described suction valve comprises the upper inlet valve 8 and lower inlet valve 14 that are in communication with the outside, described gas outlet valve comprises gas outlet valve 9 and lower gas outlet valve 15, described upper inlet valve 8 and upper gas outlet valve 9 are individually fixed on upper casing 1, described lower inlet valve 14 and lower gas outlet valve 15 are individually fixed on lower casing 2, described upper gas outlet valve 9 is communicated with upper outlet pipe 10, described lower gas outlet valve 15 is communicated with lower outlet pipe 17, two-sided piezoelectric ceramic oscillator 4 is provided with between described upper casing 1 and lower casing 2, two-sided piezoelectric ceramic oscillator 4 and be respectively equipped with seal ring 5 between upper casing 1 and lower casing 2, described two-sided piezoelectric ceramic oscillator 4 and upper inlet valve 8, the upper gas chamber 13 of sealing is formed between upper gas outlet valve 9 and upper casing 1, described two-sided piezoelectric ceramic oscillator 4 and lower inlet valve 14, the lower air chamber 16 of sealing is formed between lower gas outlet valve 15 and lower casing 2, one end of described two-sided piezoelectric ceramic oscillator 4 is provided with electrode 6, described electrode 6 is welded to connect with the power line through power line tail card 7.
Particularly, described suction valve is identical with air outlet valve structure but installation direction is contrary, be cap-shaped structure, the brim of a hat make a circle week as fixing, centre is semicircle ball-type, semi-round ball leaves otch, and the otch of suction valve is towards two-sided piezoelectric ceramic oscillator 4, and the otch of gas outlet valve is towards shell and be communicated with outlet pipe.
Particularly, described upper outlet pipe 13 is connected with total air outlet 12 of threeway 11 with lower outlet pipe 17, and described threeway 11 is sheathed on the shell of outlet pipe 13 and one end, lower steam outlet pipe 17 road.
Particularly, one end of described shell is provided with power line tail card 7, and power line is welded to connect through power line tail card 7 and electrode 6.
Particularly, described upper casing 1 is fixedly connected with by the interference of five fixing columns 3 with lower casing 2.
Upper lower casing respectively has a seal ring, and while the clamping of upper lower casing, two-sided piezoelectric ceramic oscillator is fixed by seal ring, and two-sided piezoelectric ceramic oscillator two surfaces form with fixing suction valve on upper lower casing and shell and gas outlet valve the air cavity sealed respectively.The electrode of two-sided piezoelectric ceramic oscillator welds with power line.During additional alternating voltage, two-sided piezoelectric ceramic oscillator produces constantly flexure vibrations up and down.When two-sided piezoelectric ceramic oscillator is bent upwards vibration, upper gas chamber volume reduces, and internal gas pressure increases, and upper inlet valve is closed, and upper gas outlet valve is opened, and has gas outwards to flow out; Now, lower air chamber volume increases, and air pressure inside reduces, and lower gas outlet valve cuts out, and lower inlet valve is opened, and has gas to enter lower air chamber.When two-sided piezoelectric ceramic oscillator is bent downwardly vibration, upper gas chamber volume increases, and air pressure inside reduces, and upper gas outlet valve cuts out, and upper inlet valve is opened, and has gas to enter upper gas chamber; Now lower air chamber volume reduces, and internal gas pressure increases, and lower inlet valve is closed, and lower gas outlet valve is opened, and has gas outwards to flow out.Two air cavitys are subject to the pressure difference that two-sided piezoelectric ceramic oscillator vibration produces simultaneously and drive each self-forming gas flow, are independent of each other.
When needs one-pipe is given vent to anger, threeway be enclosed within upper and lower two steam outlet pipe road junctions, threeway is flexible glue material, can play good sealing effect, and so upper and lower two-part tolerance pools together and to be flowed out by total air outlet, significantly improves out throughput and outlet pressure.
Piezo gas pump of the present invention is not limited to simple oscialltor described above and drives double cavity structure, also comprises that two oscillator drives three chambeies, two oscillator drives the cavity numbers such as four chambeies more than the similar structure of element number.
The present invention is not limited to above-mentioned mode of execution, and anyone should learn the structural change made under enlightenment of the present invention, and every have identical or close technological scheme with the present invention, all falls within protection scope of the present invention.
The technology that the present invention does not describe in detail, shape, structure part are known technology.
Claims (5)
1. two-chamber piezo gas pump, comprise shell, suction valve and gas outlet valve, it is characterized in that, described shell comprises upper casing and lower casing, described upper casing is connected by fixing column with lower casing, described suction valve comprises the upper inlet valve and lower inlet valve that are in communication with the outside, described gas outlet valve comprises gas outlet valve and lower gas outlet valve, described upper inlet valve and upper gas outlet valve are individually fixed on upper casing, described lower inlet valve and lower gas outlet valve are individually fixed on lower casing, described upper gas outlet valve is communicated with upper outlet pipe, described lower gas outlet valve is communicated with lower outlet pipe, two-sided piezoelectric ceramic oscillator is provided with between described upper casing and lower casing, two-sided piezoelectric ceramic oscillator and be respectively equipped with seal ring between upper casing and lower casing, described two-sided piezoelectric ceramic oscillator and upper inlet valve, the upper gas chamber of sealing is formed between upper gas outlet valve and upper casing, described two-sided piezoelectric ceramic oscillator and lower inlet valve, the lower air chamber of sealing is formed between lower gas outlet valve and lower casing, one end of described two-sided piezoelectric ceramic oscillator is provided with electrode, described electrode is connected with power line.
2. two-chamber piezo gas pump according to claim 1, it is characterized in that, described suction valve is identical with air outlet valve structure but installation direction is contrary, be cap-shaped structure, the brim of a hat make a circle week as fixing, and centre is semicircle ball-type, and semi-round ball leaves otch, the otch of suction valve is towards two-sided piezoelectric ceramic oscillator, and the otch of gas outlet valve is towards shell and be communicated with outlet pipe.
3. two-chamber piezo gas pump according to claim 1, is characterized in that, described upper outlet pipe is connected with total air outlet of threeway with lower outlet pipe, and described threeway is sheathed on the shell of outlet pipe and lower outlet pipe one end.
4., according to the arbitrary described two-chamber piezo gas pump of claim 1-3, it is characterized in that, one end of described shell is provided with power line tail card, and power line is connected with electrode welding through power line tail card.
5. two-chamber piezo gas pump according to claim 1, is characterized in that, described upper casing is fixedly connected with by five fixing column interference with lower casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510407780.6A CN104929916A (en) | 2015-07-13 | 2015-07-13 | Double-cavity piezoelectric gas pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510407780.6A CN104929916A (en) | 2015-07-13 | 2015-07-13 | Double-cavity piezoelectric gas pump |
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| CN104929916A true CN104929916A (en) | 2015-09-23 |
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| CN201510407780.6A Pending CN104929916A (en) | 2015-07-13 | 2015-07-13 | Double-cavity piezoelectric gas pump |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002106470A (en) * | 2000-09-29 | 2002-04-10 | Matsushita Electric Works Ltd | Diaphragm pump |
| US20040202548A1 (en) * | 2003-04-09 | 2004-10-14 | Xunhu Dai | Micropump with integrated pressure sensor |
| CN101057077A (en) * | 2004-11-17 | 2007-10-17 | 夏普株式会社 | Piezoelectric pump and stirling refrigerator |
| JP2009121454A (en) * | 2007-10-24 | 2009-06-04 | Alps Electric Co Ltd | Four valve diaphragm pump |
| CN104066990A (en) * | 2012-03-07 | 2014-09-24 | 凯希特许有限公司 | Disc pump with advanced actuator |
| CN204312298U (en) * | 2014-10-24 | 2015-05-06 | 珠海市茂田科技有限公司 | A kind of miniature piezo-ceramic air pump |
| CN204805075U (en) * | 2015-07-13 | 2015-11-25 | 李伦 | Two -chamber piezoelectricity gas pump |
-
2015
- 2015-07-13 CN CN201510407780.6A patent/CN104929916A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002106470A (en) * | 2000-09-29 | 2002-04-10 | Matsushita Electric Works Ltd | Diaphragm pump |
| US20040202548A1 (en) * | 2003-04-09 | 2004-10-14 | Xunhu Dai | Micropump with integrated pressure sensor |
| CN101057077A (en) * | 2004-11-17 | 2007-10-17 | 夏普株式会社 | Piezoelectric pump and stirling refrigerator |
| JP2009121454A (en) * | 2007-10-24 | 2009-06-04 | Alps Electric Co Ltd | Four valve diaphragm pump |
| CN104066990A (en) * | 2012-03-07 | 2014-09-24 | 凯希特许有限公司 | Disc pump with advanced actuator |
| CN204312298U (en) * | 2014-10-24 | 2015-05-06 | 珠海市茂田科技有限公司 | A kind of miniature piezo-ceramic air pump |
| CN204805075U (en) * | 2015-07-13 | 2015-11-25 | 李伦 | Two -chamber piezoelectricity gas pump |
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Application publication date: 20150923 |
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