CN109424535B - Energy-saving control method of resonant piezoelectric gas pump - Google Patents
Energy-saving control method of resonant piezoelectric gas pump Download PDFInfo
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- CN109424535B CN109424535B CN201710720110.9A CN201710720110A CN109424535B CN 109424535 B CN109424535 B CN 109424535B CN 201710720110 A CN201710720110 A CN 201710720110A CN 109424535 B CN109424535 B CN 109424535B
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- 238000009413 insulation Methods 0.000 description 4
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- 238000005265 energy consumption Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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Abstract
本案提供一种共振式压电气体泵的节能控制方法，包含步骤：步骤(a)提供共振式压电气体泵及控制模块，其中共振式压电气体泵与控制模块电性连接；步骤(b)于单位时间起始时，控制模块发送致能信号至共振式压电气体泵，使共振式压电气体泵进行气体传输；步骤(c)于单位时间内，控制模块调整致能信号的占空比，用以控制共振式压电气体泵作动或停止共振式压电气体泵；以及步骤(d)于单位时间结束后，起始下一单位时间，并重复步骤(b)及步骤(c)直到气体传输完成。
The present case provides an energy-saving control method for a resonant piezoelectric gas pump, comprising the following steps: step (a) providing a resonant piezoelectric gas pump and a control module, wherein the resonant piezoelectric gas pump is electrically connected to the control module; step (b) at the beginning of a unit time, the control module sends an enable signal to the resonant piezoelectric gas pump to enable the resonant piezoelectric gas pump to perform gas transmission; step (c) within the unit time, the control module adjusts the duty cycle of the enable signal to control the resonant piezoelectric gas pump to start or stop the resonant piezoelectric gas pump; and step (d) after the unit time ends, starting the next unit time, and repeating steps (b) and (c) until the gas transmission is completed.
Description
[ technical field ] A method for producing a semiconductor device
The present disclosure relates to an energy saving control method for a resonant piezoelectric gas pump, and more particularly, to an energy saving control method for driving a resonant piezoelectric gas pump by adjusting a duty ratio.
[ background of the invention ]
With the progress of technology, gas transmission has been widely applied to various electronic devices or medical devices, and various effects can be achieved through gas transmission.
In the prior art, in order to maximize the amount of gas transported in a unit time, a resonant piezoelectric gas pump or a micro motor for gas transportation is usually driven continuously, however, the continuous operation is power-consuming, and the consumed electric energy cannot achieve the most efficient gas transportation even under the condition of continuous use, so how to improve the gas transportation efficiency of the resonant piezoelectric gas pump or the micro motor and achieve the effect of energy saving is a problem that needs to be solved at present.
In addition, during the continuous driving operation of the resonant piezoelectric gas pump or the micro motor, the temperature of the element may be too high, which may cause the element inside the resonant piezoelectric gas pump or the micro motor to be damaged due to high temperature or the efficiency of gas transmission to be reduced, and may also cause the temperature of the output gas to be too high, so how to avoid the problem of too high temperature during the gas transmission process of the resonant piezoelectric gas pump or the micro motor is also one of the important issues at present.
In view of the above, how to develop a resonant piezoelectric gas pump or a micro motor that can improve the above-mentioned drawbacks of the prior art to solve the problems of the conventional resonant piezoelectric gas pump or micro motor, such as the decrease of gas transmission performance, energy consumption and high temperature, is a problem that needs to be solved.
[ summary of the invention ]
The present invention provides an energy-saving control method for a resonant piezoelectric gas pump, which utilizes a duty ratio to drive the resonant piezoelectric gas pump, so as to solve the problems of the known resonant piezoelectric gas pump, such as the reduction of gas transmission efficiency, energy consumption and high temperature caused by continuous operation.
To achieve the above object, a broader aspect of the present invention is to provide an energy-saving control method for a resonant piezoelectric gas pump, comprising: (a) providing a resonant piezoelectric gas pump and a control module, wherein the resonant piezoelectric gas pump is electrically connected with the control module; (b) when unit time starts, the control module sends an enabling signal to the resonant piezoelectric gas pump to enable the resonant piezoelectric gas pump to carry out gas transmission; (c) in unit time, the control module adjusts the duty ratio of the enabling signal to control the resonance type piezoelectric gas pump to actuate or stop the resonance type piezoelectric gas pump; and (d) after the unit time is over, starting the next unit time, and repeating the steps (b) and (c) until the gas transmission is completed.
[ description of the drawings ]
Fig. 1A is a schematic diagram of a resonant piezoelectric gas pump and a control module according to a preferred embodiment.
Fig. 1B is a schematic flow chart illustrating an energy saving control method of the resonant piezoelectric gas pump according to the present embodiment.
Fig. 2A is a schematic diagram of output signal versus time for a resonant piezoelectric gas pump driven at a 100% duty cycle.
Fig. 2B is a schematic diagram of output gas pressure versus time for a resonant piezoelectric gas pump driven at a 100% duty cycle.
Fig. 2C is a schematic diagram of the relationship between the output signal and time of the duty-cycle driven resonant piezoelectric gas pump according to the first preferred embodiment of the present invention.
Fig. 2D is a schematic diagram of the relationship between the output signal and time of the duty-cycle driven resonant piezoelectric gas pump according to the first preferred embodiment of the present invention.
Fig. 2E is a schematic diagram of the relationship between the output signal and time of the duty-cycle driven resonant piezoelectric gas pump according to the second preferred embodiment of the present invention.
Fig. 3A is a schematic front exploded view of a resonant piezoelectric gas pump according to a preferred embodiment of the present invention.
FIG. 3B is a schematic diagram of a rear exploded view of the resonant piezoelectric gas pump shown in FIG. 3A.
Fig. 4A is a schematic front assembly view of the piezoelectric actuator of the resonant piezoelectric gas pump shown in fig. 3A.
Fig. 4B is a schematic diagram of a back assembly structure of the piezoelectric actuator of the resonant piezoelectric gas pump shown in fig. 3A.
Fig. 4C is a schematic cross-sectional view of the piezoelectric actuator of the resonant piezoelectric gas pump shown in fig. 3A.
Fig. 5A to 5E are schematic operation diagrams of the resonant piezoelectric gas pump shown in fig. 3A.
[ detailed description ] embodiments
Exemplary embodiments that embody features and advantages of this disclosure are described in detail below in the detailed description. It will be understood that the present disclosure is capable of various modifications without departing from the scope of the disclosure, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.
The resonant piezoelectric gas pump 12 is a resonant piezoelectric gas pump for gas transmission, and can be applied to various electronic components or various medical devices, for example: but not limited to, a notebook computer, a smart phone, a smart watch, a tablet computer, etc. First, referring to fig. 1A, fig. 1A is a schematic diagram illustrating a resonant piezoelectric gas pump and a control module according to a preferred embodiment of the present invention. As shown in the figure, the resonant piezoelectric gas pump 12 and the control module 11 are electrically connected, and the control module 11 is used to control the driving and stopping of the resonant piezoelectric gas pump 12, but not limited thereto. In the present embodiment, the control module 11 is connected to a power source (not shown) for providing a driving power to the control module 11, and the control module 11 controls whether the driving power is transmitted to the resonant piezoelectric gas pump 12, so as to control the on/off of the resonant piezoelectric gas pump 12.
Referring to fig. 1A and 1B, fig. 1B is a schematic flow chart illustrating an energy saving control method of a resonant piezoelectric gas pump according to a preferred embodiment of the present disclosure. The energy-saving control method of the resonant piezoelectric gas pump of the present embodiment is to adjust the ratio (i.e. duty ratio) of the actuating signal of the resonant piezoelectric gas pump 12 in a unit time, so as to achieve energy-saving and efficient gas transmission, as shown in fig. 1A and 1B, firstly, step S1 is performed, a resonant piezoelectric gas pump 12 and a control module 11 are provided, and in the present embodiment, the resonant piezoelectric gas pump 12 is electrically connected to the control module 11, and the control module 11 is used to control the driving and stopping of the resonant piezoelectric gas pump 12, but not limited thereto, and the detailed structure of the resonant piezoelectric gas pump 12 will be further detailed in the later section of the description.
Next, in step S2, at the beginning of a unit time, the control module 11 sends an enable signal to the resonant piezoelectric gas pump 12, so that the resonant piezoelectric gas pump 12 starts gas transmission. In the present embodiment, the unit time is the interval between the starting time of each time the resonant piezoelectric gas pump 12 is energized, in other words, the time interval from the time point when the resonant piezoelectric gas pump 12 is energized to the time point when the resonant piezoelectric gas pump 12 is energized again next time is a unit time, and the unit time is a specific value, but not limited thereto, and may be changed arbitrarily according to the actual situation.
Then, in step S3, the control module 11 adjusts the duty ratio of the enabling signal to control the resonant piezoelectric gas pump 12 to operate and stop within a unit time, until the unit time is over, that is, the control module 11 adjusts the duty ratio of the enabling signal to control the resonant piezoelectric gas pump 12 to operate or stop within the unit time according to the enabling signal. Finally, step S4 is performed, after the unit time is over, the next unit time is started, and the steps S2 and S3 are repeated for each next unit time until the gas transmission is completed.
Referring to fig. 2A and 2B, fig. 2A is a schematic diagram of the relationship between the output signal of the resonant piezoelectric gas pump driven at a 100% duty cycle and time, and fig. 2B is a schematic diagram of the relationship between the output gas pressure of the resonant piezoelectric gas pump driven at a 100% duty cycle and time. As shown in fig. 2A, the resonant piezoelectric gas pump 12 is continuously operated without stopping for a unit time a, i.e., the duty ratio of the resonant piezoelectric gas pump 12 is 100%. As shown in fig. 2B, the resonant piezoelectric gas pump 12 driven at a 100% duty cycle can reach a specific output pressure X at 5 unit times a, and the power consumption is calculated as (i.e., the area of the shaded area in fig. 2B): p100％＝X*5A*100％；
I.e. consumes power P100％＝5XA。
Referring to fig. 2C and 2D, fig. 2C is a schematic diagram showing a relationship between an output signal and time of the duty-cycle driven resonant piezoelectric gas pump according to the first preferred embodiment of the present disclosure, and fig. 2D is a schematic diagram showing a relationship between an output signal and time of the duty-cycle driven resonant piezoelectric gas pump according to the first preferred embodiment of the present disclosure. As shown in fig. 2C, the resonant piezoelectric gas pump 12 of the first embodiment starts to operate at the beginning of the unit time a, and has an enable signal in only 10% of the unit time a, in other words, the duty ratio of the enable signal for driving the resonant piezoelectric gas pump 12 is 10%, but the duty ratio can be changed arbitrarily according to the actual situation. As shown in FIG. 2D, the resonant piezoelectric gas pump 12 driven at a 10% duty cycle can reach a specific output pressure X at 7 units A, which is the pressure at which the pump can operateThe power consumption is calculated as (i.e., the area of the shaded area in FIG. 2D): p10％10% of X7A; i.e. consumes power P10％＝0.7XA。
Referring to fig. 2A to 2D, it can be seen from the above description that although the resonant piezoelectric gas pump 12 driven at a 100% duty cycle can quickly accumulate the gas pressure to reach the specific output gas pressure X, the resonant piezoelectric gas pump 12 consumes a large amount of power (P), which is the power consumed by the resonant piezoelectric gas pump 12100％5 XA). If the resonant piezoelectric gas pump 12 is driven at a 10% duty cycle, the pressure accumulation can reach X only after a long time, but the power (P) consumed by the resonant piezoelectric gas pump 12 is driven at a 10% duty cycle10％0.7XA) is the power consumed by the resonant piezoelectric gas pump 12 at much less than 100% duty cycle drive (P10％5XA), and the resonant piezoelectric gas pump 12 driven by a 10% duty cycle is intermittently operated, not only can the excess power consumption be reduced, but also the phenomenon that the resonant piezoelectric gas pump 12 is continuously operated to cause an over-high temperature, damage to the components or a reduction in the service life of the components can be avoided, and further, the effects of energy saving and high efficiency gas transmission can be achieved.
Referring to fig. 2E, fig. 2E is a schematic diagram illustrating a relationship between an output signal and time of a duty-cycle driven resonant piezoelectric gas pump according to a second preferred embodiment of the present disclosure. As shown in fig. 2E, the resonant piezoelectric gas pump 12 of the second embodiment of the present invention starts to operate at the beginning of a unit time a, and has an enable signal in a unit time a of only 50%, that is, the duty ratio of the enable signal for driving the resonant piezoelectric gas pump 12 is 50%, but not limited thereto, and the duty ratio may be changed arbitrarily according to actual situations. In other embodiments, the duty cycle of the resonant piezoelectric gas pump 12 is anywhere from one to ninety-nine thousandths of an hour, but not limited to.
Referring to fig. 3A and 3B, fig. 3A is a schematic front exploded view of a resonant piezoelectric gas pump according to a preferred embodiment of the present invention. FIG. 3B is a schematic diagram of a rear exploded view of the resonant piezoelectric gas pump shown in FIG. 3A. As shown in the figure, the resonant piezoelectric gas pump 12 of the present embodiment includes an air inlet plate 121, a resonant plate 122, a piezoelectric actuator 123, insulating sheets 1241 and 1242, a conducting sheet 125, and the air inlet plate 121, the resonant plate 122, the piezoelectric actuator 123, the insulating sheet 1241, the conducting sheet 125, and another insulating sheet 1242 are sequentially stacked and positioned to complete the resonant piezoelectric gas pump 12 of the present embodiment. In the present embodiment, the piezoelectric actuator 123 is assembled by the suspension plate 1230 and the piezoelectric ceramic plate 1233, and is disposed corresponding to the resonator plate 122, but not limited thereto. Gas is introduced from at least one inlet hole 1210 of the inlet plate 121 of the resonant piezoelectric gas pump 12, and flows through a plurality of pressure chambers (not shown) by the operation of the piezoelectric actuator 123, thereby transferring the gas.
Referring to fig. 3A and 3B, as shown in fig. 3A, the air intake plate 121 of the resonant piezoelectric gas pump 12 of the present embodiment has air intake holes 1210, and the number of the air intake holes 1210 of the present embodiment is 4, but not limited thereto, and the number thereof can be changed arbitrarily according to actual requirements, and is mainly used for allowing air to flow into the resonant piezoelectric gas pump 12 from the air intake holes 1210 under the action of atmospheric pressure outside the device. As shown in fig. 3B, the lower surface of the intake plate 121 opposite to the intake holes 1210 further includes a central recess 1211 and bus holes 1212, wherein the number of the bus holes 1212 of the present embodiment is also 4, but not limited thereto, the 4 bus holes 1212 are respectively disposed to correspond to the 4 intake holes 1210 on the upper surface of the intake plate 121, and can guide and converge the gas entering from the intake holes 1210 to the central recess 1211 for downward transmission. In the present embodiment, the air inlet plate 121 has an air inlet hole 1210, a bus hole 1212 and a central recess 1211 formed integrally, and a converging chamber for converging air is formed at the central recess 1211 for temporarily storing air. In some embodiments, the material of the air inlet plate 121 may be, but is not limited to, a stainless steel material. In other embodiments, the depth of the bus chamber formed by the central recess 1211 is the same as the depth of the bus holes 1212, but not limited thereto.
In the present embodiment, the resonator plate 122 is made of a flexible material, but not limited thereto, and the resonator plate 122 has a hollow hole 1220 corresponding to the central recess 1211 of the lower surface of the gas inlet plate 121, so that the gas can flow downward. In other embodiments, the resonator plate 122 may be made of a copper material, but not limited thereto.
Referring to fig. 4A, fig. 4B and fig. 4C, which are a front view, a back view and a cross-sectional view of the piezoelectric actuator shown in fig. 3A, as shown in the figure, the piezoelectric actuator 123 of the present embodiment is assembled by the suspension plate 1230, the outer frame 1231, the plurality of supports 1232, and the piezoelectric ceramic plate 1233, wherein the piezoelectric ceramic plate 1233 is attached to the lower surface 1230b of the suspension plate 1230, and a plurality of brackets 1232 connected between the suspension plate 1230 and the outer frame 1231, wherein two ends of each bracket 1232 are connected to the outer frame 1231, and the other end is connected to the suspension plate 1230, and a plurality of gaps 1235 are defined between each of the support 1232, the suspension plate 1230 and the outer frame 1231 for air circulation, the arrangement, implementation and number of the suspension plate 1230, the outer frame 1231 and the support 1232 are not limited to this, and can be changed according to the actual situation. In addition, the housing 1231 further has a conductive pin 1234 protruding outward for providing power connection, but not limited thereto.
In the present embodiment, the suspension plate 1230 has a step-surface structure, that is, the upper surface 1230a of the suspension plate 1230 further has a convex portion 1230c, and the convex portion 1230c may be, but not limited to, a circular convex structure. As can be seen from fig. 4A to 4C, the convex portion 1230C of the suspension plate 1230 is coplanar with the upper surface 1231a of the outer frame 1231, the upper surface 1230a of the suspension plate 1230 and the upper surfaces 1232a of the brackets 1232 are also coplanar, and a specific depth is formed between the convex portion 1230C of the suspension plate 1230 and the upper surfaces 1231a of the outer frame 1231, the upper surface 1230a of the suspension plate 1230 and the upper surfaces 1232a of the brackets 1232. As for the lower surface 1230B of the suspension plate 1230, as shown in fig. 4B and 4C, the lower surface 1231B of the outer frame 1231 and the lower surface 1232B of the support 1232 are flat and coplanar, and the piezoelectric ceramic plate 1233 is attached to the flat lower surface 1230B of the suspension plate 1230. In some embodiments, the suspension plate 1230, the support 1232, and the outer frame 1231 can be integrally formed, and can be formed by a metal plate, such as stainless steel, but not limited thereto.
Referring to fig. 3A and fig. 3B, as shown in the figure, the resonant piezoelectric gas pump 12 of the present embodiment further includes an insulation sheet 1241, a conductive sheet 125 and another insulation sheet 1242, which are sequentially disposed under the piezoelectric actuator 123, and the shape of the insulation sheet generally corresponds to the shape of the outer frame 1231 of the piezoelectric actuator 123. The insulating sheets 1241 and 1242 of the present embodiment are made of an insulating material, for example: plastic, but not limited to this, for insulation. The conductive sheet 125 of the present embodiment is made of a conductive material, for example: but not limited to, metal for electrical conduction, and the conductive sheet 125 of the embodiment further includes a conductive pin 1251 for electrical conduction, but not limited to this.
Referring to fig. 3A, fig. 3B and fig. 5A to fig. 5E, wherein fig. 5A to fig. 5E are schematic operation diagrams of the resonant piezoelectric gas pump shown in fig. 3A. First, as shown in fig. 5A, the resonant piezoelectric gas pump 12 is formed by sequentially stacking the gas inlet plate 121, the resonator plate 122, the piezoelectric actuator 123, the insulating sheet 1241, the conducting sheet 125, and the other insulating sheet 1242, wherein a gap g0 is formed between the resonator plate 122 and the piezoelectric actuator 123, and a conductive adhesive is filled in the gap g0 between the outer frames 1231 of the resonator plate 122 and the piezoelectric actuator 123 of the present embodiment, but not limited thereto, so that the depth of the gap g0 can be maintained between the resonator plate 122 and the convex portion 1230c of the suspension plate 1230 of the piezoelectric actuator 123, and further the gas flow can be guided to flow more rapidly, and the convex portion 1230c of the suspension plate 1230 keeps a proper distance from the resonator plate 122, so that the contact interference between the convex portion 1230c and the resonator plate 122 is reduced, and the noise generation can be reduced; in other embodiments, the height of the outer frame 1231 of the high voltage electric actuator 123 can be increased to increase a gap when the outer frame is assembled with the resonator plate 122, but not limited thereto.
Referring to fig. 5A to 5E, as shown in the figure, after the air intake plate 121, the resonator plate 122 and the piezoelectric actuator 123 are correspondingly assembled in sequence, a chamber for collecting gas is defined between the hollow hole 1220 of the resonator plate 122 and the central recess 1211 of the air intake plate 121, and a first chamber 1221 is defined between the resonator plate 122 and the piezoelectric actuator 123 for temporarily storing the gas, and the first chamber 1221 is communicated with the chamber at the central recess 1211 of the lower surface of the air intake plate 121 through the hollow hole 1220 of the resonator plate 122, and the gas can be exhausted from both sides of the first chamber 1221 through the gap 1235 between the brackets 1232 of the piezoelectric actuator 123.
In the present embodiment, when the resonant piezoelectric gas pump 12 is operated, the piezoelectric actuator 123 is mainly driven by voltage to perform reciprocating vibration in the vertical direction with the support 1232 as the fulcrum. As shown in fig. 5B, when the piezoelectric actuator 123 is driven by voltage to vibrate downward, the gas enters through at least one gas inlet hole 1210 on the gas inlet plate 121, and then flows down into the first chamber 1221 through at least one bus hole 1212 on the lower surface thereof to converge to the central recess 1211, and then flows through the hollow hole 1220 of the resonator plate 122 corresponding to the central recess 1211, then, the resonant diaphragm 122 is driven by the vibration of the piezoelectric actuator 123 to perform a vertical reciprocating vibration according to the resonance, as shown in fig. 5C, the resonator plate 122 also vibrates downward and adheres to and abuts on the convex portion 1230c of the suspension plate 1230 of the piezoelectric actuator 123, and by the deformation of the resonator plate 122, to compress the volume of the first chamber 1221 and close the middle flow space of the first chamber 1221, to promote the gas therein to flow toward both sides, and through the flow down through the gaps 1235 between the legs 1232 of the piezoelectric actuator 123. In fig. 5D, the resonator plate 122 returns to the initial position, and the piezoelectric actuator 123 is driven by the voltage to vibrate upwards, so as to compress the volume of the first chamber 1221, but at this time, since the piezoelectric actuator 123 is lifted upwards, the lifting displacement may be D, so that the gas in the first chamber 1221 flows towards two sides, and the gas is continuously introduced through the gas inlet hole 1210 of the gas inlet plate 121 and flows into the chamber formed by the central recess 1211, and as shown in fig. 5E, the resonator plate 122 is vibrated upwards by the upward lifting vibration of the piezoelectric actuator 123 to resonate upwards, so that the gas in the central recess 1211 flows into the first chamber 1221 through the hollow hole 1220 of the resonator plate 122, and flows downwards through the gap 1235 between the brackets 1232 of the piezoelectric actuator 123 and flows out of the resonant piezoelectric gas pump 12. Therefore, a pressure gradient is generated in the flow channel design of the resonant piezoelectric gas pump 12, so that the gas flows at a high speed, the gas is transmitted from the suction end to the discharge end through the impedance difference in the inlet and outlet directions of the flow channel, and the gas can be continuously pushed out under the condition that the discharge end has air pressure, and the effect of silence can be achieved. In some embodiments, the vertical reciprocating vibration frequency of the resonator plate 122 may be the same as the vibration frequency of the piezoelectric actuator 123, i.e. both of them may be upward or downward at the same time, which may be varied according to the actual implementation, and is not limited to the operation manner shown in this embodiment.
In the above embodiment, the frequency of the enabling signal may be 20K-28 KHz, which is exemplified by 28KHz, that is, the enabling signal drives the piezoelectric actuator 123 to operate 28000 times in one second at a duty ratio of 100%, the piezoelectric actuator 123 to operate 2800 times in one second at a duty ratio of 10%, and the piezoelectric actuator to vibrate 28 times in one second at a duty ratio of 0.1%. In addition, the unit time may also be 0.5 seconds, but is not limited thereto.
In summary, the duty ratio of the enabling signal for controlling the resonance type piezoelectric gas pump to actuate is adjusted through the control module, so that the power loss is reduced, overhigh temperature, component damage or component service life reduction caused by continuous operation of the resonance type piezoelectric gas pump can be avoided, and the effects of energy conservation and high-efficiency gas transmission are achieved.
Various modifications may be made by those skilled in the art without departing from the scope of the invention as defined by the appended claims.
[ notation ] to show
11: control module
12: resonance type piezoelectric gas pump
121: air inlet plate
1210: air intake
1211: central concave part
1212: bus bar hole
122: resonance sheet
1220: hollow hole
1221: the first chamber
123: piezoelectric actuator
1230: suspension plate
1230 a: upper surface of the suspension plate
1230 b: lower surface of the suspension plate
1230 c: convex part
1231: outer frame
1231 a: the upper surface of the outer frame
1231 b: lower surface of the outer frame
1232: support frame
1232 a: upper surface of the support
1232 b: lower surface of the support
1233: piezoelectric ceramic plate
1234. 1251: conductive pin
1235: voids
1241. 1242: insulating sheet
125: conductive sheet
g 0: gap
A: unit time
X: specific output air pressure
S1-S4: the flow steps of the energy-saving control method of the resonance type piezoelectric gas pump.
Claims (14)
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| CN109424535A (en) | 2019-03-05 |
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