A kind of atomization device with adaptive speed regulation

Abstract

The invention relates to the technical field of atomizers, and discloses an adaptive speed-adjustable atomizer device, comprising a seat, a bottle and an atomizer motor, wherein a piezoelectric ceramic sheet is arranged between the bottle and the seat; a control unit is also arranged in the seat, the control unit is connected to the piezoelectric ceramic sheet by signal, the piezoelectric ceramic sheet is used to transmit a pressure signal to the control unit, the control unit is used to receive the pressure signal and judge the liquid level of the atomized liquid and the actual atomization rate; the atomizer motor is connected to the control unit by signal, a preset atomization rate is preset in the control unit, the control unit is used to compare the actual atomization rate with the preset atomization rate and transmit a speed signal to the atomizer motor. When the liquid level changes, the control unit can obtain the actual atomization rate according to the rate of change of the liquid level, and the control unit adjusts the speed of the atomizer motor after comparing the actual atomization rate with the value of the preset atomization rate, thereby completing the closed-loop control of "liquid level-atomizer motor speed" and realizing adaptive atomization rate adjustment.

Description

Technical Field

[0001] The invention relates to the technical field of atomizers, and in particular to an atomizer device with adaptive speed regulation. Background Art

[0002] The atomizer uses an air pump to break down the liquid in the liquid container into fine water droplets and disperse them into the surrounding environment. It has been widely used in daily life, such as aromatherapy machines in hotels, lobbies and other places.

[0003] The atomization device includes an atomization motor and a liquid storage container. The liquid storage container is simply a container for storing liquid. It cannot obtain the liquid level in time and does not have a liquid level prompt function. The user cannot add atomization liquid in time, causing the atomization motor to do useless work and unnecessary energy loss, which cannot meet the requirements of green living.

[0004] The utility model patent with the authorization announcement number CN209645581U and the authorization announcement date of November 19, 2019 discloses an ultrasonic atomizing liquid storage device, including a liquid storage tank, a motor, a transmission rod, a stirring rod, a heater and a liquid level meter. A base is provided at the bottom of the liquid storage tank, a motor is provided on the inner side of the base, a transmission rod is provided on the upper side of the motor, stirring rods are provided on both sides of the transmission rod, a heater is installed between the stirring rods, a motor is provided on the inner side of the stirring rod, a propeller is installed on the lower side of the motor, a through pipe is provided on the lower left side of the liquid storage tank, a control panel is provided on the left side of the liquid storage tank, a liquid level meter is installed on the right side of the liquid storage tank, a transparent glass tube is provided on the inner side of the liquid level meter, the transparent glass tube is connected to the liquid storage tank through a wire, and a float is provided on the inner side of the transparent glass tube. The above-mentioned ultrasonic atomizing liquid storage device installs a liquid level meter on the liquid storage tank, and uses the transparent glass tube and the inner float to detect the liquid level, so that the user can add liquid in time.

[0005] Most of the existing atomizer motors work at a fixed speed, that is, the atomization rate of the atomizer motor remains fixed when the remaining reserve of the atomized liquid changes. However, the actual atomization rate of the atomizer is affected by the working conditions such as the air humidity and temperature of the external environment. For example, the atomizer is used in an aromatherapy machine. Since the aromatic hydrocarbons in the aromatherapy essential oil are low-toxic and most of them are chemically synthesized, there are many chemical toxins in them, which can cause great harm to people. If the concentration of the aroma volatiles of the aromatherapy is too high, inhaling the overly strong fragrance for a long time will be harmful to health.

[0006] When the remaining reserve of the atomized liquid changes, the atomized liquid has different solute concentrations at different liquid levels due to the precipitation of solutes, stratification of different solutions in the mixed solution, etc., resulting in different masses of aromatic hydrocarbons contained in the atomized droplets released at the same atomization rate. As the atomization time increases, the amount of solutes in the mixed solution increases, which will cause the concentration of aroma volatiles in the aromatherapy to be too high. If a high-precision liquid level sensor is used in the atomization container, the cost will increase significantly. Therefore, adaptive adjustment of the atomization rate of the atomization device is crucial. Summary of the invention

[0007] The purpose of the present invention is to provide an atomizing device with adaptive speed regulation to solve the problem in the prior art that the atomizing rate remains unchanged when the liquid level of the atomized liquid changes, which is harmful to the health of personnel.

[0008] In order to achieve the above-mentioned object, the present invention provides an adaptive speed regulating atomization device, comprising a seat, a bottle body arranged on the seat, and an atomization motor, wherein the bottle body has a receiving cavity for receiving atomized liquid, and a piezoelectric ceramic sheet for detecting the pressure of the bottle body on the seat is arranged between the bottle body and the seat;

[0009] A control unit is also arranged in the seat body, and the control unit is connected to the piezoelectric ceramic sheet by signal. The piezoelectric ceramic sheet is used to transmit a pressure signal to the control unit, and the control unit is used to receive the pressure signal and determine the liquid level of the atomized liquid and the actual atomization rate;

[0010] The atomizing motor is connected to the control unit by signal. A preset atomizing rate is preset in the control unit. The control unit is used to compare the actual atomizing rate with the preset atomizing rate and transmit a rotation speed signal to the atomizing motor.

[0011] Preferably, a pressure amplification mechanism is arranged between the bottle body and the piezoelectric ceramic sheet.

[0012] Preferably, the pressure amplification mechanism includes a first pressure-bearing plate, a second pressure-bearing plate and a spring, the first pressure-bearing plate is arranged at the bottom of the bottle body, the area of ​​the second pressure-bearing plate is smaller than the area of ​​the piezoelectric ceramic plate, and the spring is connected between the first pressure-bearing plate and the second pressure-bearing plate.

[0013] Preferably, the first pressure-bearing plate and the second pressure-bearing plate are both circular structures, are coaxially arranged with the bottle body, and the spring is perpendicular to the first pressure-bearing plate and the second pressure-bearing plate.

[0014] Preferably, the seat body comprises a base and a bottle shell arranged on the base, the bottle body is sleeved in the bottle shell, the height of the bottle body is higher than the height of the bottle shell, and the piezoelectric ceramic sheet is arranged at the inner bottom of the bottle shell.

[0015] Preferably, the control unit comprises a liquid level detection module and a charge amplification module, and the charge amplification module is connected between the piezoelectric ceramic sheet and the liquid level detection module.

[0016] Preferably, a display screen is also arranged on the base, and the display screen is connected to the control unit by signal, and the display screen is used to receive the liquid level signal and the atomization rate signal transmitted by the control unit.

[0017] Compared with the prior art, the atomizing device with adaptive speed regulation in the embodiment of the present invention has the following beneficial effects: the piezoelectric ceramic piece has the characteristic of pressure sensitivity, and can convert extremely weak mechanical vibration into an electrical signal. By utilizing the positive piezoelectric effect of the piezoelectric ceramic piece, when the liquid level changes, the pressure on the piezoelectric ceramic piece changes, and the amount of charge generated by the piezoelectric ceramic piece changes with the change of the external force received. The control unit can continuously measure the liquid level in real time by detecting the change of the amount of charge, and can detect the change of the liquid level without direct contact with the atomized liquid, which not only avoids contamination of the liquid, but also prolongs the service life of the atomizing device; the actual atomization rate can be obtained according to the rate of change of the liquid level, and the control unit compares the actual atomization rate with the value of the preset atomization rate, and then transmits a speed signal to the atomizing motor, adjusts the speed of the atomizing motor, completes the closed-loop control of "liquid level-atomizing motor speed", realizes adaptive adjustment of the atomization rate, outputs the same solute concentration at different liquid levels, and ensures the health of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the atomizing device with adaptive speed regulation of the present invention;

[0019] Figure 2 yes Figure 1 A schematic diagram of the internal structure of an atomization device with adaptive speed regulation;

[0020] Figure 3 yes Figure 2 An enlarged schematic diagram of the adaptive speed regulating atomization device at A;

[0021] Figure 4 yes Figure 1 A structural exploded view of an adaptive speed regulating atomization device;

[0022] Figure 5 yes Figure 1 A structural block diagram of an atomization device with adaptive speed regulation;

[0023] Figure 6 yes Figure 1 Workflow diagram of the adaptive speed regulation atomization device.

[0024] In the figure; 1. bottle body; 2. first pressure-bearing plate; 3. piezoelectric ceramic plate; 4. bottle shell; 5. base; 6. switch button; 7. power interface; 8. output port; 9. control unit; 10. display screen; 11. second pressure-bearing plate; 12. spring; 13. pressure amplification mechanism; 14. wire; 201. display module; 202. liquid level detection module; 203. mixed liquid; 204. atomizing motor; 205. adjustment module. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] A preferred embodiment of the atomizing device with adaptive speed regulation of the present invention is as follows: Figures 1 to 6 As shown, the adaptive speed-regulating atomizing device comprises a seat, a bottle 1, a piezoelectric ceramic sheet 3, an atomizing motor 204 and a control unit 9. The bottle 1 is arranged on the seat, and the bottle 1 is used to contain atomized liquid. The control unit 9 is arranged on the seat, and the atomizing motor 204 is connected to the control unit 9 by signal. The control unit 9 is used to control the action of the atomizing motor 204 to control the operation of the adaptive speed-regulating atomizing device.

[0027] The bottle body 1 is a cylindrical cavity structure, the inner cavity of the bottle body 1 forms a receiving cavity for accommodating the atomized liquid, and the top of the bottle body 1 is an open structure. The bottle body 1 is made of insulating material, and the bottle body 1 uses high-density polyethylene (HDPE). HDPE is a kind of high crystallinity, non-polar surface is translucent to a certain extent, it has good heat resistance and cold resistance, good chemical stability, high rigidity and toughness, good mechanical strength, dielectric properties, environmental stress cracking resistance is also good, hardness, tensile strength and creep are better than low-density polyethylene; wear resistance, electrical insulation, toughness and cold resistance are good; chemical stability is good, at room temperature, it is insoluble in any organic solvent, and is resistant to corrosion by acids, alkalis and various salts.

[0028] The base body includes a base 5 and a bottle shell 4. The bottle shell 4 is a cylindrical structure. The top of the bottle shell 4 is an open structure. The bottom of the bottle shell 4 is provided with a stepped outer wall surface with a reduced outer diameter. The base 5 is a cylindrical structure. The top of the base 5 is formed with an annular groove. The annular groove cooperates with the stepped outer wall surface at the bottom of the bottle body 1, so that the bottle body 1 can be assembled on the base 5. The bottle shell 4 and the base 5 are connected by threaded sealing. The bottom surface of the base 5 is a plane, which is convenient for the base 5 to be stably supported.

[0029] A rectangular groove is provided inside the base 5, and a control unit 9 is installed in the rectangular groove. A power interface 7 and a switch button 6 are also arranged on the outer wall of the base 5. The power interface 7 is used to connect to an external power source, and the switch button 6 is used to control the start and stop operation of the adaptive speed-adjusting atomization device. An output port 8 is also arranged on the base 5. The output port 8 is connected to the signal of the adjustment module 205 of the control unit 9. The output port 8 is used to connect to the signal of the atomization motor 204. The output port 8 can transmit the speed signal of the control unit 9 to the atomization motor 204 to adjust the speed of the atomization motor 204, so as to realize the adaptive adjustment of the atomization rate according to the working conditions.

[0030] The inner diameter of the bottle shell 4 is larger than the outer diameter of the bottle body 1. The bottle body 1 is coaxially sleeved in the bottle shell 4. The open end face of the bottle body 1 is higher than the upper end face of the bottle shell 4. The inner bottom of the bottle shell 4 is provided with a stepped groove. The diameter of the stepped groove gradually decreases in the direction close to the base 5. The diameter of the upper part of the stepped groove is slightly smaller than the diameter of the piezoelectric ceramic sheet 3. The piezoelectric ceramic sheet 3 is interference fitted in the upper part of the stepped groove. The height of the upper part of the stepped groove is slightly larger than the thickness of the piezoelectric ceramic. The piezoelectric ceramic is glued and fixed on the stepped surface of the stepped groove by epoxy resin AB glue.

[0031] The lower part of the stepped groove forms a hollow layer between the piezoelectric ceramic sheet 3 and the base 5, that is, there is no contact in the middle part of the piezoelectric ceramic sheet 3, which allows the piezoelectric ceramic sheet 3 to deform in the vertical direction. The polarized electrodes of the piezoelectric ceramic sheet 3 are respectively welded with wires 14 and pass through the middle channel at the bottom of the bottle shell 4 to connect to the control unit 9 on the base 5.

[0032] The piezoelectric ceramic piece 3 is pressure-sensitive and can convert extremely weak mechanical vibrations into electrical signals. By utilizing the positive piezoelectric effect of the piezoelectric ceramic piece 3, when the liquid level changes, the pressure on the piezoelectric ceramic piece 3 changes, and the amount of charge generated by the piezoelectric ceramic piece 3 changes with the change of the external force. The control unit 9 can continuously measure the liquid level in real time by detecting the change in the amount of charge, and the actual atomization rate can be obtained based on the rate of change of the liquid level.

[0033] A pressure amplification mechanism 13 is also arranged between the bottom of the bottle body 1 and the piezoelectric ceramic sheet 3. The pressure amplification mechanism 13 is used to amplify the pressure transmitted from the bottle body 1 to the piezoelectric ceramic sheet 3, increase the charge of the piezoelectric ceramic sheet 3, and improve the accuracy of the detection result. The pressure amplification mechanism 13 includes a first pressure-bearing sheet 2, a second pressure-bearing sheet 11, and a spring 12. The first pressure-bearing sheet 2 and the second pressure-bearing sheet 11 are both circular structures. The first pressure-bearing sheet 2, the second pressure-bearing sheet 11, and the spring 12 are all made of metal and are coaxially arranged with the bottle body 1. The spring 12 is perpendicular to the first pressure-bearing sheet 2 and the second pressure-bearing sheet 11 to ensure that the pressure is transmitted in the axial direction of the bottle body 1, thereby improving the accuracy of the detection result.

[0034] The first pressure-bearing sheet 2 is fixed to the bottom of the bottle body 1, the top surface of the first pressure-bearing sheet 2 contacts the bottom surface of the bottle body 1, the bottom surface of the second pressure-bearing sheet 11 contacts the end surface of the piezoelectric ceramic sheet 3, the top end of the spring 12 is welded and fixed to the first pressure-bearing sheet 2, and the bottom end of the spring 12 is welded and fixed to the second pressure-bearing sheet 11, so that the force transmission path is stable. The diameter of the first pressure-bearing sheet 2 is the same as the diameter of the bottle body 1, the diameter of the first pressure-bearing sheet 2 is larger than the diameter of the second pressure-bearing sheet 11, and the diameter of the second pressure-bearing sheet 11 is smaller than the diameter of the piezoelectric ceramic sheet 3, that is, the area of ​​the second pressure-bearing sheet 11 is smaller than the areas of the first pressure-bearing sheet 2 and the piezoelectric ceramic sheet 3.

[0035] Since the middle part of the piezoelectric ceramic piece 3 is suspended, the gravity of the bottle body 1 and the atomized liquid in the bottle body 1 indirectly acts on the horizontal plane of the piezoelectric ceramic piece 3 through the amplification mechanism. Since the center of the circle of the pressure amplification mechanism 13, the bottle body 1, and the piezoelectric ceramic piece 3 are coaxially arranged, the maximum disturbance deformation of the piezoelectric ceramic piece 3 on the vertical plane is located at the center of the piezoelectric ceramic piece 3. When the diameter of the second pressure-bearing piece 11 is smaller, the force-bearing area of ​​the piezoelectric ceramic piece 3 is smaller, and the maximum deflection of the piezoelectric ceramic piece 3 is larger. Therefore, when the liquid level changes (that is, the pressure on the piezoelectric ceramic piece 3 changes), the maximum deflection of the piezoelectric ceramic piece 3 changes more significantly, and the change in the amount of charge generated is more obvious, so the sensitivity of the liquid level detection is greatly improved.

[0036] In addition, a spring 12 is arranged between the first pressure-bearing plate 2 and the second pressure-bearing plate 11. As the liquid level drops, the elastic potential energy stored in the spring 12 is gradually released. At the moment of releasing the potential energy, a vertical upward acceleration will be generated. According to Newton's second law, the piezoelectric ceramic plate 3 will be subjected to an upward combined external force, which increases the deformation recovery amount of the piezoelectric ceramic plate 3 and improves the sensitivity of liquid level detection to a certain extent. However, if the ratio of the diameter of the piezoelectric ceramic plate 3 to the diameter of the second pressure-bearing plate 11 is too large, the maximum deflection of the piezoelectric ceramic plate 3 is too large, which exceeds the mechanical strength that the piezoelectric ceramic plate 3 can bear. In this embodiment, the diameter of the second pressure-bearing plate 11 is 1 / 3 of the diameter of the piezoelectric ceramic plate 3, and the diameter of the spring 12 is half of the diameter of the second pressure-bearing plate 11.

[0037] The control unit 9 includes a liquid level detection module 202, a display module 201, an adjustment module 205 and a charge amplifier module. The charge amplifier module is connected between the piezoelectric ceramic sheet 3 and the liquid level detection module 202, that is, the polarized electrode of the piezoelectric ceramic sheet 3 is connected to the charge amplifier module, and then connected to the liquid level detection module 202 via the charge amplifier module. Under the positive piezoelectric effect of the piezoelectric ceramic sheet 3, the change in liquid level causes the pressure acting on the piezoelectric ceramic sheet 3 to change, and the amount of charge generated by the piezoelectric ceramic sheet 3 changes with the change in pressure. The charge amplifier module converts the weak charge change generated by the piezoelectric ceramic sheet 3 into a voltage change proportional to it. The display module 201 is used to connect the display screen 10 on the bottle body 1 with a signal to display information such as the liquid level; the adjustment module 205 is used to connect the atomizing motor 204 with a signal to adjust the speed of the atomizing motor 204.

[0038] The liquid level detection module 202 is used to analyze the voltage transmitted by the charge amplifier module, and judge the specific liquid level of the atomized liquid in the bottle body 1 according to the voltage. When the atomization device starts to work, the liquid level detection module 202 of the control unit 9 only needs to detect the change curve of the charge amplifier output voltage, and then filter the external interference factors except the liquid level change through bandpass filtering, that is, to obtain the change curve of the single independent variable of "liquid level-voltage", and finally, obtain the one-to-one matching mechanism of "liquid level-voltage" under actual working conditions.

[0039] The control unit 9 is preset with preset atomization rates corresponding to different liquid levels. The preset atomization rates can be modified according to the needs of the user or the environmental requirements of the atomization device to meet the needs of different users and achieve the most appropriate control effect. The control unit 9 sets a certain actual atomization interval, and the setting of the atomization time interval can be 1s, 2s, 3s, 4s, 5s, 6s, etc. The control unit 9 detects the first liquid level and the second liquid level within the atomization time interval according to the aforementioned principle, calculates the actual atomization rate of the atomization device according to the liquid level difference between the first liquid level and the second liquid level and the atomization time interval, compares the actual atomization rate with the preset atomization rate, and transmits a speed signal to the atomization motor 204 to change the speed of the atomization motor 204, thereby adjusting the actual atomization rate.

[0040] In this embodiment, the control unit 9 adjusts the rotation speed of the atomizer motor 204 by changing the driving voltage of the atomizer motor 204. If the actual atomization rate is greater than the preset atomization rate, the control unit 9 transmits a voltage reduction signal to the atomizer motor 204 to reduce the rotation speed by reducing the driving voltage of the atomizer motor 204; if the actual atomization rate is less than the preset atomization rate, the control unit 9 transmits a pressure increase signal to the atomizer motor 204 to increase the rotation speed by increasing the driving voltage of the atomizer motor 204.

[0041] A display screen 10 is also arranged on the bottle shell 4 , and the display screen 10 is signal-connected to the display module 201 of the control unit 9 . The display screen 10 is used to receive and display the liquid level signal and atomization rate signal transmitted by the control unit 9 , and to feed back the actual rotation speed of the atomization motor 204 .

[0042] The working process of the present invention is as follows: connect the power cord to the power interface 7, connect the output port 8 to the atomizing motor 204, start the switch button 6, the adaptive speed-regulating atomizing device starts atomizing, and the atomizing motor 204 pumps the atomized liquid mixed with air in the bottle body 1 to the external environment. Relying on the closed-loop control of "liquid level-atomizing motor speed", the actual atomizing rate of the atomizing device always maintains the preset atomizing rate for atomization.

[0043] When the control unit 9 detects the liquid level and adjusts the speed of the atomizing motor 204, the following steps are included:

[0044] Step 301, the operator inputs a preset atomization rate according to the use environment. The preset atomization rate can be modified according to the needs of the user or the environment where the atomization device is located to meet the needs of different users and achieve the most appropriate control effect.

[0045] Step 302, setting the atomization time interval for the control unit 9 to read the liquid level.

[0046] A certain atomization time interval is set, and the control unit 9 reads the liquid level of the mixed liquid in the bottle at the beginning and end of the atomization time interval. The setting of the atomization time interval can be 1s, 2s, 3s, 4s, etc. The size of the atomization time interval determines that the total actual atomization time is closer to the preset atomization time. The shorter the atomization time interval is, the closer to the preset atomization time, but the greater the amount of calculation required for the program, so a suitable atomization time interval should be selected. In the preferred embodiment, the atomization time interval is set to 5s.

[0047] Step 303, the control unit 9 obtains the first liquid level. The control unit 9 reads the liquid level at the beginning of the set atomization time interval as the first liquid level. When the adaptive speed regulating atomization device just starts atomizing, the control unit 9 uses the liquid level of the mixed liquid 203 in the bottle body 1 as the first liquid level;

[0048] Step 304: the control unit 9 determines whether the first liquid level is zero.

[0049] The specific judgment method is as follows: assuming that there is no liquid stored in bottle 1, and the net weight of bottle 1 is m 1 , the weight of the solution stored in bottle 1 is m 2 The force acting on the end face of the pressure amplification mechanism 13 and perpendicular to the end face is G = (m 1 +m 2)·g (where g is the gravitational acceleration at the location of the detection device), the pressure amplification coefficient of the pressure amplification mechanism 13 is λ, and the force perpendicular to the contact surface acting on the piezoelectric ceramic piece 3 through the pressure amplification mechanism 13 is F=λ·G.

[0050] Since the piezoelectric ceramic sheet 3 is subjected to pressure, the thickness of the piezoelectric ceramic sheet 3 will be deformed. According to the longitudinal piezoelectric effect of the piezoelectric ceramic sheet 3, the surface charge generated is Q=d·F, (where d is the piezoelectric constant of the piezoelectric ceramic sheet 3). Therefore, the surface charge generated by the piezoelectric ceramic sheet 3 is Q=d·λ·(m 1 +m 2 )·g.

[0051] As the liquid level changes (i.e. the weight of the solution stored in bottle 1 is m 2 When the bottle 1 does not store liquid, the control unit detects that the surface charge Q generated by the piezoelectric ceramic 3 is Q=d·λ·m 1 ·g, that is, the liquid level is zero.

[0052] Step 305a: If the first liquid level is not zero, the control unit 9 inputs a driving voltage to the atomizing motor 204 according to a preset atomizing rate, and the atomizing motor 204 matches the corresponding rotation speed and starts.

[0053] According to the atomization rate set by the user, the control unit 9 automatically matches the corresponding rotation speed of the atomization motor 204. The rotation speed of the atomization motor 204 can be achieved by controlling the driving voltage of the motor.

[0054] Step 305b: If the first liquid level is zero, the control unit 9 controls the atomizing motor 204 to stop working, and the control unit 9 reminds the user to add liquid through the display screen 10 and the alarm.

[0055] Step 306: The control unit obtains the second liquid level.

[0056] The control unit 9 reads the liquid level of the mixed liquid 203 in the bottle body 1 after the atomization time interval as the second liquid level, that is, the liquid level at the end of the set atomization time interval is used as the second liquid level.

[0057] Step 307: The control unit 9 determines whether the second liquid level is zero. The determination method is the same as the determination method of the first liquid level.

[0058] Step 308a: If the second liquid level is not zero, the control unit 9 calculates the actual atomization rate according to the liquid level difference between the first liquid level and the second liquid level and the atomization time interval.

[0059] The actual atomization rate is calculated by dividing the liquid level difference between the first liquid level and the second liquid level by the time taken for the liquid level of the atomized liquid in the bottle 1 to atomize from the first liquid level to the second liquid level, that is, the set atomization time interval.

[0060] Step 308b: If the second liquid level is zero, the control unit 9 controls the atomizing motor 204 to stop working, and reminds the user to add liquid through the display screen 10 and the alarm.

[0061] Step 309 , the control unit 9 compares the actual atomization rate with the preset atomization rate, and adjusts the driving voltage of the atomization motor 204 , so that the atomization motor 204 continues to atomize at the preset atomization rate.

[0062] If the actual atomization rate is greater than the preset atomization rate, the control unit 9 transmits a voltage reduction signal to the atomization motor 204 to reduce the rotation speed by reducing the driving voltage of the atomization motor 204. If the actual atomization rate is less than the preset atomization rate, the control unit 9 transmits a pressure increase signal to the atomization motor 204 to increase the rotation speed by increasing the driving voltage of the atomization motor 204, and continues atomization when the driving voltage is adjusted.

[0063] Finally, steps 303 to 309 are repeated in sequence until the atomization is completed.

[0064] In summary, the embodiment of the present invention provides an adaptive speed-regulating atomization device, in which the piezoelectric ceramic piece has a pressure-sensitive characteristic and can convert extremely weak mechanical vibrations into electrical signals. By utilizing the positive piezoelectric effect of the piezoelectric ceramic piece, when the liquid level changes, the pressure on the piezoelectric ceramic piece changes, and the amount of charge generated by the piezoelectric ceramic piece changes with the change of the external force received. The control unit can continuously measure the liquid level in real time by detecting the change in the amount of charge, and the actual atomization rate can be obtained according to the rate of change of the liquid level. The control unit compares the actual atomization rate with the value of the preset atomization rate and then transmits a speed signal to the atomization motor, adjusts the speed of the atomization motor, completes the closed-loop control of "liquid level-atomization motor speed", realizes adaptive adjustment of the atomization rate, outputs the same solute concentration at different liquid levels, and ensures the health of personnel.

[0065] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An adaptive speed regulating atomization device, characterized in that: It comprises a seat, a bottle arranged on the seat and an atomizing motor, wherein the bottle has a receiving cavity for receiving atomized liquid, and a piezoelectric ceramic sheet for detecting the pressure of the bottle on the seat is arranged between the bottle and the seat; A control unit is also arranged in the seat body, and the control unit is connected to the piezoelectric ceramic sheet by signal. The piezoelectric ceramic sheet is used to transmit a pressure signal to the control unit, and the control unit is used to receive the pressure signal and determine the liquid level of the atomized liquid and the actual atomization rate; The atomizing motor is connected to the control unit by signal. The control unit is preset with a preset atomizing rate. The control unit is used to compare the actual atomizing rate with the preset atomizing rate and transmit a speed signal to the atomizing motor. A pressure amplification mechanism is also arranged between the bottle body and the piezoelectric ceramic sheet, and the pressure amplification mechanism includes a first pressure-bearing sheet, a second pressure-bearing sheet and a spring. The first pressure-bearing sheet is arranged at the bottom of the bottle body, and the area of ​​the second pressure-bearing sheet is smaller than the area of ​​the piezoelectric ceramic sheet. The spring is connected between the first pressure-bearing sheet and the second pressure-bearing sheet, and the area of ​​the second pressure-bearing sheet is smaller than the area of ​​the first pressure-bearing sheet.

2. The adaptive speed regulating atomization device according to claim 1, characterized in that: The first pressure-bearing piece and the second pressure-bearing piece are both circular structures, and are coaxially arranged with the bottle body. The spring is perpendicular to the first pressure-bearing piece and the second pressure-bearing piece.

3. The adaptive speed regulating atomization device according to claim 1 or 2, characterized in that: The seat body comprises a base and a bottle shell arranged on the base, the bottle body is sleeved in the bottle shell, the height of the bottle body is higher than the height of the bottle shell, and the piezoelectric ceramic sheet is arranged at the inner bottom of the bottle shell.

4. The adaptive speed regulating atomizing device according to claim 1 or 2, characterized in that: The control unit comprises a liquid level detection module and a charge amplification module, and the charge amplification module is connected between the piezoelectric ceramic sheet and the liquid level detection module.

5. The adaptive speed regulating atomizing device according to claim 1 or 2, characterized in that: The seat body is also provided with a display screen, which is signal-connected to the control unit and is used to receive a liquid level signal and an atomization rate signal transmitted by the control unit.

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