TW202323670A - Blower - Google Patents

Abstract

A blower is disclosed and includes a suspension plate, a cavity frame, an actuator, an insulation frame and a conductive frame. The suspension plate includes a suspension part. The cavity frame is disposed on the suspension plate. The actuator includes a piezoelectric carrier, a resonance adjusting plate and a piezoelectric plate. The actuator is disposed on the cavity frame. The insulation frame is disposed on the actuator. The conductive frame is disposed on the insulation frame. The suspension plate, the cavity frame, the piezoelectric carrier, the insulation frame and the conductive frame are produced as a modular structure. The modular structure has a length and a width, the length is between 14 mm to 18 mm, and the width is between 14 mm to 18 mm.

Description

blower

This case concerns a blower, especially a thin, portable blower.

When many blowers are driven, the gas is pushed out by vibration. In order to increase the gas transmission capacity, this type of blower must be light and portable. Transformation of the blower is an urgent problem to be solved at present.

The main purpose of this case is to provide an improved air flow rate when the blower is activated. The blower designed and improved in this case can further increase the transmission volume of the blower.

A broad implementation aspect of this case is a blower, including: a suspension piece, including a suspension part, the suspension part has a hollow hole, and the suspension part can bend and vibrate; a cavity frame is arranged on the suspension piece; The moving body is composed of a piezoelectric carrier plate, an adjustment resonant plate and a piezoelectric plate stacked in sequence, the actuating body is arranged on the cavity frame, and the piezoelectric carrier plate is used to receive A voltage and a second voltage cause the piezoelectric plate to generate reciprocating bending vibrations, wherein the first voltage and the second voltage are alternately applied to the piezoelectric carrier plate at a frequency; an insulating frame is arranged on the on the moving body; and a conductive frame, which is arranged on the insulating frame; wherein, the suspension plate, the cavity frame, the piezoelectric carrier, the insulating frame and the conductive frame are made into a modular structure, and the The module structure has a length and a width, the length is between 14 mm and 18 mm and the width is between 14 mm and 18 mm.

Embodiments embodying the features and advantages of this case will be described in detail in the description of the latter paragraph. It should be understood that the present case can have various changes in different aspects without departing from the scope of the present case, and the descriptions and diagrams therein are used for illustration in nature rather than limiting the present case.

Please refer to Figure 1A, Figure 1B, Figure 2, Figure 3A and Figure 3B. This case provides a blower 11, including a suspension piece 111, a cavity frame 112, an actuating body 113, an insulating frame 114 and A conductive frame 115 . The suspension piece 111 includes a suspension part 111a, a hollow hole 111b is formed at the center of the suspension part 111a, and the suspension part 111a can bend and vibrate. The cavity frame 112 is disposed on the suspension sheet 111 . The actuating body 113 is composed of a piezoelectric carrier plate 113 a , an adjusting resonant plate 113 b and a piezoelectric plate 113 c sequentially stacked from bottom to top, and the actuating body 113 is disposed on the cavity frame 112 . The piezoelectric carrier plate 113a is used to receive a first voltage and a second voltage to cause the piezoelectric plate 113c to generate reciprocating bending vibration, and the first voltage and the second voltage are alternately applied to the piezoelectric carrier plate 113a at a frequency . The first voltage and the second voltage may respectively be the positive pole and the negative pole of the same power system (not shown), but not limited thereto. In other embodiments, the power system of the first voltage or the second voltage can also be adjusted according to design requirements (such as sine wave, pulse wave, square wave, sawtooth wave, etc.). In the embodiment of this case, the first voltage is a square wave +15 volts, and the second voltage is a square wave -15 volts, that is, the first voltage and the second voltage are between ±15 volts, and the first voltage and the second voltage are between ±15 volts. The peak-to-peak value (V _PP ) of the two voltages is 30 volts, and the alternating frequency of the first voltage and the second voltage is between 20 kHz and 25 kHz, preferably around 21 kHz, but not limited thereto . In other embodiments of the present application, the power supply system, the voltage value, and the alternating frequency of the first voltage and the second voltage can also be adjusted according to design requirements. The output air volume of the blower 11 is about 1 liter per minute, and the output air volume of the blower 11 is about 15 millimeters of mercury (mmHg). The insulating frame 114 is disposed on the actuating body 113 . The conductive frame 115 is disposed on the insulating frame 114 . It should be noted that the difference between the first embodiment and the second embodiment is that the piezoelectric pin 113d of the piezoelectric carrier plate 113a of the actuating body 113 of the first embodiment does not have a circular hole (as shown in FIG. 1A, As shown in Figure 1B), the piezoelectric pin 113d of the piezoelectric carrier plate 113a of the actuator 113 of the second embodiment has a circular hole (as shown in Figure 2, Figure 3A, and Figure 3B), But not limited thereto, the piezoelectric pin 113d can be changed according to its design requirements. In addition, it is worth noting that the other difference between the first embodiment and the second embodiment is that the conductive electrode 115b of the conductive frame 115 of the first embodiment is a single contact point (as shown in FIG. 1A and FIG. 1B ), The conductive electrode 115b of the conductive frame 115 of the second embodiment is Y-shaped with two contact points (as shown in FIG. 2 and FIG. 3A ). The conductive frame 115 of the first embodiment is manufactured in an integrated manner, and the second embodiment is manufactured by welding the conductive electrode 115b on the conductive frame 115 by welding, but not limited thereto, the conductive electrode 115b It is designed to transmit the first voltage or the second voltage received by the conductive pin 115a to the piezoelectric plate 113c of the actuating body 113 through the conductive electrode 115b, no matter whether it is manufactured in one-piece molding or through welding The conductive electrodes 115b all belong to the scope of this embodiment.

Please refer to Fig. 2 and Fig. 3A, the blower 11 is made into a module structure by the suspension plate 111, the cavity frame 112, the piezoelectric carrier plate 113a, the insulating frame 114 and the conductive frame 115, and the module structure has a length L and a width W, wherein the length L of the modular structure is between 14 millimeters (mm) and 18 millimeters (mm), and the width W is between 14 millimeters (mm) and 18 millimeters (mm), But not limited to this. In one embodiment, the length L of the module structure is 16 millimeters (mm), and the width W is 16 millimeters (mm), but not limited thereto. It is worth noting that the ratio of the length or width of the suspension plate 111, the cavity frame 112, the piezoelectric carrier plate 113a (excluding electrode pins), the insulating frame 114 and the conductive frame 115 (excluding electrode pins) is the same . In some embodiments, the length or width of the conductive frame 115 may be slightly smaller than the length or width of the insulating frame 114 (as shown in FIG. 3A ).

It should be noted that in this embodiment, when the piezoelectric carrier plate 113a receives the first voltage and the conductive frame 115 receives the second voltage, the piezoelectric plate 113c generates bending vibration in a first direction. When the piezoelectric carrier plate 113a receives the second voltage and the conductive frame 115 receives the first voltage, the piezoelectric plate 113c generates bending vibration in a second direction opposite to the first direction. In this embodiment, the first direction and the second direction are two opposite directions, but not limited thereto. In other embodiments of the present application, the first direction and the second direction may also be expressed as other direction relationships, but not limited thereto.

It should be noted that in this embodiment, a resonant chamber 116 is formed between the actuating body 113, the cavity frame 112 and the suspension part 111a, and the first voltage and the second voltage are alternately applied to the actuating body at a frequency. Body 113, driving the actuating body 113 to drive the suspension plate 111 to generate resonance, so that the suspension part 111a of the suspension plate 111 produces reciprocating bending vibration, so that the gas enters the resonance chamber 116 through the hollow hole 111b of the suspension plate 111 and then Exhaust to realize the transmission flow of gas.

In addition, it is worth noting that in the embodiment of the present case, the hollow hole 111b in the suspension sheet 111 is a circle. In one embodiment, the hollow hole 111b of the suspension sheet 111 can also be a square, a rhombus or a parallelogram, and the width of the hollow hole 111b is between 0.4 millimeters (mm) and ~2 millimeters (mm), but Not limited thereto, the shape and width of the hollow hole 111b in the suspension plate 111 can be changed according to design requirements.

Please refer to Fig. 1A to Fig. 1B, Fig. 4A to Fig. 4C, the blower 11 includes: a suspension piece 111, including a suspension part 111a and a hollow hole 111b, the suspension part 111a can bend and vibrate, and the hollow hole 111b is formed in the suspension part Center location of 111a. The cavity frame 112 is carried and stacked on the suspension part 111a. The actuating body 113 is carried and stacked on the cavity frame 112 and includes a piezoelectric carrier plate 113a, an adjustment resonant plate 113b, and a piezoelectric plate 113c. The piezoelectric carrier plate 113a is loaded and stacked on the cavity frame 112, the adjustment resonance plate 113b is loaded and stacked on the piezoelectric carrier plate 113a, and the piezoelectric plate 113c is loaded and stacked on the adjustment resonance plate 113b, for receiving voltage and Driving the piezoelectric carrier plate 113a and adjusting the resonant plate 113b generates reciprocating bending vibration. The insulating frame 114 is carried and stacked on the actuating body 113 . The conductive frame 115 is stacked on the insulating frame 114 . The suspension plate 111 is fixed on the bearing area 118 of the air guide assembly, so that the space 111c defined outside the suspension plate 111 surrounds it for gas circulation. An air flow chamber 117 is formed between the suspension sheet 111 and the bottom of the air guiding component bearing area 118 . A resonant chamber 116 is formed between the actuating body 113 , the cavity frame 112 and the suspension part 111 a. By driving the actuating body 113, the suspension plate 111 is driven to resonate, and the suspension part 111a of the suspension plate 111 is driven to produce a reciprocating vibration displacement, which is used to attract gas to enter the airflow chamber 117 through the gap 111c and then discharge, so as to realize the transmission flow of the gas .

Please refer to FIG. 1A and FIG. 1B , the above blower 11 includes a suspension piece 111 , a cavity frame 112 , an actuating body 113 , an insulating frame 114 and a conductive frame 115 . Wherein, the suspending sheet 111 is made of flexible material, and has a suspending portion 111a and a hollow hole 111b. The suspension part 111a is a sheet-like structure capable of bending and vibrating. Its shape and size roughly correspond to the inner edge of the air guide component bearing area 118, but not limited thereto. The shape of the suspension part 111a can also be square, circular, or elliptical. , triangle and polygon one of them. The hollow hole 111b runs through the center of the suspension part 111a for gas circulation.

Please refer to FIG. 1A , FIG. 1B and FIG. 4A , the above cavity frame 112 is stacked on the suspension sheet 111 , and its shape corresponds to the suspension sheet 111 . The actuating body 113 is stacked on the cavity frame 112 and defines a resonant chamber 116 between the suspension plate 111 and the suspension part 111a. The insulating frame 114 is stacked on the actuating body 113 , and its appearance is similar to that of the cavity frame 112 . The conductive frame 115 is stacked on the insulating frame 114, its appearance is similar to the insulating frame 114, and the conductive frame 115 has a conductive pin 115a and a conductive electrode 115b, the conductive pin 115a extends outward from the outer edge of the conductive frame 115, The conductive electrodes 115b extend inward from the inner edge of the conductive frame 115 . In addition, the actuating body 113 further includes a piezoelectric carrier plate 113a, an adjustment resonant plate 113b, and a piezoelectric plate 113c. The piezoelectric carrier 113 a is carried and stacked on the cavity frame 112 . The adjustment resonance plate 113b is carried and stacked on the piezoelectric carrier plate 113a. The piezoelectric plate 113c is carried and stacked on the adjustment resonant plate 113b. The adjustment resonance plate 113 b and the piezoelectric plate 113 c are housed in the insulating frame 114 , and are electrically connected to the piezoelectric plate 113 c by the conductive electrodes 115 b of the conductive frame 115 . Wherein, the piezoelectric carrier plate 113a and the adjustment resonant plate 113b are both made of conductive materials. The piezoelectric carrier plate 113a has a piezoelectric pin 113d, and the piezoelectric pin 113d is connected to the conductive pin 115a on the actuator body 113. The drive circuit (not shown) is used to receive the drive signal (drive frequency and drive voltage, that is, the aforementioned first voltage and second voltage), and the drive signal can be adjusted by the piezoelectric pin 113d, the piezoelectric carrier plate 113a, and the resonant plate 113b, the piezoelectric plate 113c, the conductive electrode 115b, the conductive frame 115, and the conductive pin 115a form a loop, and the insulating frame 114 blocks the conductive frame 115 from the actuating body 113, so as to avoid a short circuit and enable the drive signal to be transmitted to the piezoelectric plate 113c. After receiving the driving signal (driving frequency and driving voltage), the piezoelectric plate 113c is deformed due to the piezoelectric effect to further drive the piezoelectric carrier plate 113a and adjust the resonant plate 113b to produce reciprocating bending vibration.

As mentioned above, the adjustment resonant plate 113b is located between the piezoelectric plate 113c and the piezoelectric carrier 113a, and serves as a buffer between the two to adjust the vibration frequency of the piezoelectric carrier 113a. Basically, the thickness of the adjustment resonant plate 113b is greater than that of the piezoelectric carrier plate 113a , and the thickness of the adjustment resonant plate 113b can be varied, thereby adjusting the vibration frequency of the actuating body 113 .

Please refer to Fig. 1A, Fig. 1B and Fig. 4A at the same time, the suspension plate 111, the cavity frame 112, the actuating body 113, the insulating frame 114 and the conductive frame 115 are stacked in sequence correspondingly and positioned on the air guide component bearing area 118 Inside, the blower 11 is urged to be placed and positioned in the bearing area 118 of the air guide assembly, and the bottom is fixed on the positioning projection 118b to support the positioning, so the blower 11 is between the suspension part 111a and the inner edge of the bearing area 118 of the air guide assembly A gap 111c is defined for gas to circulate.

Please refer to FIG. 4A first, an air flow chamber 117 is formed between the above-mentioned suspension plate 111 and the bottom surface of the air guiding component bearing area 118 . The airflow chamber 117 communicates with the resonance chamber 116 between the actuator body 113, the suspension sheet 111 and the suspension part 111a through the hollow hole 111b in the suspension sheet 111, and controls the vibration frequency of the gas in the resonance chamber 116 to make it compatible with the suspension The vibration frequency of the part 111a tends to be the same, so that the resonance chamber 116 and the suspension part 111a can produce a Helmholtz resonance effect (Helmholtz resonance), so that the gas transmission efficiency can be improved.

Please refer to FIG. 4B, when the piezoelectric plate 113c moves away from the bottom surface of the air guide component bearing area 118, the piezoelectric plate 113c drives the suspension part 111a of the suspension piece 111 to move away from the bottom surface of the air guide component bearing area 118, so that The volume of the air flow chamber 117 expands rapidly, and the internal pressure drops to form a negative pressure, which attracts the air outside the blower 11 to flow in through the gap 111c, and enters the resonance chamber 116 through the hollow hole 111b, so that the air pressure in the resonance chamber 116 increases to generate A pressure gradient; as shown in Figure 4C, when the piezoelectric plate 113c drives the suspension part 111a of the suspension plate 111 to move towards the bottom surface of the air guide component bearing area 118, the gas in the resonance chamber 116 flows out quickly through the hollow hole 111b , squeeze the gas in the gas flow chamber 117, and let the converged gas be quickly and massively ejected into the air hole 118a of the bearing area 118 of the gas guide component in an ideal gas state close to Bernoulli's law. Therefore, after repeating the actions in Figure 4B and Figure 4C, the piezoelectric plate 113c can vibrate reciprocally. According to the principle of inertia, the internal pressure of the resonant chamber 116 after exhaust is lower than the equilibrium pressure, which will guide the gas to enter again. In the resonance chamber 116, the vibration frequency of the gas in the resonance chamber 116 is controlled to be close to the same as the vibration frequency of the piezoelectric plate 113c, so as to generate a Helmholtz resonance effect, so as to realize high-speed and large-scale gas transmission.

In addition, the module structure of the blower 11 in this case takes the length L and width W of 16 millimeters (mm) as an example. The blower 11 in this case has improved the gas transmission capacity, and is light and portable. After the design improvement, the transmission capacity can be increased. The effect.

To sum up, the blower provided in this case not only miniaturizes, but also increases the gas transmission capacity and produces a stronger Bernoulli effect, which is extremely industrially applicable.

This case can be modified in various ways by a person who is familiar with this technology, but it does not deviate from the intended protection of the scope of the attached patent application.

11: Blower 111:Suspended film 111a: suspension part 111b: hollow hole 111c: Void 112: cavity frame 113: Actuating body 113a: Piezoelectric carrier plate 113b: Adjust the resonance plate 113c: piezoelectric plate 113d: piezoelectric pin 114: insulation frame 115: Conductive frame 115a: conductive pin 115b: conductive electrode 116: Resonance chamber 117: Air flow chamber 118: Air guide component bearing area 118a: ventilation hole 118b: positioning bump L: Length W: width

Fig. 1A is an exploded view from the first perspective of the first embodiment of the blower component of the present case. Fig. 1B is an exploded schematic diagram of the second perspective view of the first embodiment of the blower component of the present case. Fig. 2 is an exploded schematic diagram of the second embodiment of the blower component of the present case. Fig. 3A is a schematic view from the first perspective of the second embodiment of the blower in this case. Fig. 3B is a schematic diagram of a second perspective of the second embodiment of the blower in this case. Figures 4A to 4C are schematic diagrams of the operation of the blower in this case.

11: Blower

111:Suspended sheet

111a: suspension part

111b: hollow hole

112: cavity frame

113: Actuating body

113a: Piezoelectric carrier plate

113b: Adjust the resonance plate

113c: piezoelectric plate

113d: piezoelectric pin

114: insulation frame

115: Conductive frame

115a: conductive pin

115b: conductive electrode

Claims (10)

A blower (11), comprising: A suspension piece (111), comprising a suspension part (111a), the suspension part (111a) has a hollow hole (111b), and the suspension part (111a) can bend and vibrate; A cavity frame (112), arranged on the suspension sheet (111); An actuating body (113) is composed of a piezoelectric carrier plate (113a), an adjusting resonant plate (113b) and a piezoelectric plate (113c) stacked in sequence, wherein the actuating body (113) is arranged on On the cavity frame (112), the piezoelectric carrier plate (113a) is used to receive a first voltage and a second voltage to make the piezoelectric plate (113c) generate reciprocating bending vibration, wherein the first a voltage and a second voltage are alternately applied to the piezoelectric carrier plate (113a) at a frequency; an insulating frame (114), arranged on the actuating body (113); and a conductive frame (115), arranged on the insulating frame (114); Wherein, the suspension plate (111), the cavity frame (112), the piezoelectric carrier plate (113a), the insulating frame (114) and the conductive frame (115) are made into a module structure, and the module The group structure has a length (L) and a width (W), the length (L) is between 14 mm and 18 mm, and the width (W) is between 14 mm and 18 mm. The blower (11) as claimed in claim 1, wherein the length (L) of the module structure is 16 mm, and the width (W) is 16 mm. The blower (11) as claimed in claim 1, wherein the frequency is between 20 kHz and 25 kHz. The blower (11) as claimed in claim 1, wherein the frequency is 21 kilohertz. The blower (11) according to claim 1, wherein the first voltage and the second voltage are between ±15 volts, and the peak-to-peak value of the first voltage and the second voltage is 30 volts. As the blower (11) described in claim 1, its output air flow is 1 liter per minute. As the blower (11) described in claim item 1, its output air pressure is 15 mm Hg. The blower (11) as described in claim 1, wherein when the piezoelectric carrier plate (113a) receives the first voltage and the conductive frame (115) receives the second voltage, the piezoelectric plate (113c) generates bending vibration in a first direction, wherein when the piezoelectric carrier plate (113a) receives the second voltage and the conductive frame (115) receives the first voltage, the piezoelectric plate (113c) generates One direction is opposite to the second direction of bending vibration, wherein a resonance chamber (116) is formed between the actuating body (113), the cavity frame (112) and the suspension part (111a), through which the first voltage And the second voltage is alternately applied to the actuating body (113) at the frequency, driving the actuating body (113) to drive the suspension piece (111) to resonate, so that the suspension part of the suspension piece (111) (111a) produces a reciprocating bending vibration displacement to cause gas to enter the resonance chamber (116) through the hollow hole (111b) of the suspension part (111a) and then be discharged. The blower (11) according to claim 1, wherein the hollow hole (111b) of the suspension part (111a) is a circle. The blower (11) according to claim 1, wherein the hollow hole (111b) of the suspension part (111a) is a square, a rhombus or a parallelogram.

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