JPS5835332Y2 - Ultrasonic liquid atomizer - Google Patents

Description

[Detailed description of the invention] This invention relates to an ultrasonic liquid atomization device, and in particular displays the operating state when a liquid is being atomized by ultrasonic waves, so that the user can know the atomizing operating state and abnormal state. This invention relates to an ultrasonic liquid atomization device that is easily known.

Recently, humidifiers that humidify rooms, medical inhalers that treat bronchial diseases by inhaling atomized liquid, facial beauty devices, etc., use ultrasonic waves to atomize liquid. .

Conventional ultrasonic liquid atomizers are provided with a pilot lamp that lights up when a power switch is turned on, and the user is informed of the power-on state by whether or not the pilot lamp is lit.

However, using a pilot lamp to indicate only the power-on state has the disadvantage that if the amount of atomization is relatively small, it is easy to mistake the device for failure.

In addition, since conventional ultrasonic liquid atomizers simply notify the power-on status by displaying a lit pilot lamp, it is necessary to check the liquid tank one by one to find out whether there is more than a predetermined amount of liquid in the liquid tank. Moreover, even if a temperature abnormality occurs, the user is not notified in any way, so it will remain abnormal until the ultrasonic vibrator, power transistor, etc. included in the device are thermally destroyed and the atomization generation operation stops. There was a problem with not knowing things.

Therefore, if there is a water shortage or temperature abnormality, it is desirable to notify the user in advance so that malfunctions can be prevented.

Therefore, the main purpose of this invention is to be able to display and notify the user of the state in which liquid is being atomized;
To provide an ultrasonic liquid atomization device that a user can use with peace of mind.

Another object of this invention is to provide an ultrasonic liquid atomizer that has a simple configuration and is inexpensive, and can display the atomization operating status and drought or abnormal temperature conditions, and can prevent failures. be.

To summarize this invention, a lighting display (or light emitting display) is performed based on a variable pulse generated from a variable pulse generation circuit for regulating the ultrasonic oscillation period and variably controlling the amount of atomization.
An operating state display section is provided to notify whether or not the atomization operation is normal based on the display state of the operating state display section.

More preferably, an abnormality display section is provided, and depending on the combination of the display state of the operation status display section and the display state of the abnormality display section, it is possible to determine whether the atomization is operating normally or when there is a water shortage.
The temperature abnormal state can be distinguished from the abnormal temperature state, and many types (three types) of the status can be displayed using a small number of display units.

FIG. 1 shows an ultrasonic liquid atomization device 10 according to an embodiment of this invention.
FIG.

In the figure, the main body 11 of the ultrasonic liquid atomization device 10 includes:
An atomized liquid blowing nozzle 111 is formed on the side surface, and a handle 112 is integrally formed for convenient carrying.

A liquid tank 12 is formed in this main body 11 .

A transparent member is preferably used for the front portion of the liquid tank 12 so that the inside of the liquid tank can be seen through.

A liquid such as water is put in this liquid tank 12, but when generating an atomized liquid containing a mixture of medicines, a medicine storage cylinder 13 is used. will be satisfied.

A liquid equivalent to a predetermined amount of liquid is placed on the inner wall of the liquid tank 12 to prevent the amount of liquid such as water from becoming less than a predetermined amount and causing thermal damage to the ultrasonic transducer (not shown). An electrode 14 is arranged at the surface position.

This electrode 14 is a conductive plate-like piece or a pin-shaped electrode in order to detect changes in the liquid level with extremely high accuracy.

A part of the main body 11 of the ultrasonic liquid atomization device 10 includes a changeover switch 15 for selecting an atomization generating operation or a stopping operation and for greatly changing the amount of atomization in several stages as necessary; An atomization amount adjustment knob 16 for adjusting the atomization amount (ml) per unit time (minute) is provided.

Further, on the front surface of the main body 11, an atomizing operation display section (for example, a lamp or a light emitting diode) 17, which is a feature of this invention, is disposed.

More preferably, a water shortage indicator (for example, a lamp or a light emitting diode) 18 is disposed on the front surface of the main body 11, as an example of an abnormality indicator, to indicate that the liquid in the liquid tank 12 has fallen below a predetermined amount. be done.

FIG. 2 is a block diagram schematically showing an embodiment of this invention.

The outline of this invention will be explained with reference to FIG.
(See Figure 4 a below) or the period T (i.e. frequency) or the high level period TH and low level period TL of the pulse.
A variable pulse a with a variable O ratio (that is, duty) is derived and is applied to the display circuit 90 during operation as well as to the drive circuit 30.

The in-operation display circuit 90 intermittently displays the operating state display section 17 at the repetition period of the variable pulse a to indicate that the atomization operation is in progress.

The drive circuit 30 operates during the low level period TL of the variable pulse a.
A relatively large output is derived to excite the ultrasonic vibrator to the extent that it can be atomized by the ultrasonic oscillation output, and a relatively small output that is not enough to atomize the liquid during the high level period To of the variable pulse a. An output pulse b (see FIG. 4, which will be described later) is generated and applied to the ultrasonic oscillation circuit 40.

Note that the polarities of the output pulse b of the drive circuit 30 and the variable pulse a may be reversed.

This ultrasonic oscillation circuit 40 includes a rectifier circuit, and an AC power source 5
0 is received, rectified, and this rectified output is sent to a constant voltage power supply circuit 6.
Give to 0.

Further, the high frequency oscillation output of the ultrasonic oscillation circuit 40 is increased or decreased based on the output pulse b given from the drive circuit 30, and the high frequency oscillation output is applied to the ultrasonic oscillator 70 to excite it, thereby generating ultrasonic waves. make it work.

In this way, the ultrasonic vibrator 70 is constantly excited, and by exciting the ultrasonic vibrator 70 with an oscillation output sufficient to atomize the liquid in synchronization with the pulse output of the variable pulse generation circuit 20, The ultrasonic transducer is repeatedly caused to oscillate ultrasonic waves at a repetition period of the variable pulse a so as to be in an atomization region or a non-atomization region.

The constant voltage circuit 60 converts the rectified output provided from the ultrasonic oscillation circuit 40 into a constant voltage, and applies the constant voltage output to the variable pulse generating circuit 20. Drive circuit 30. to the media source position detection circuit 80.

The input end of the medium source position detection circuit 80 is connected to an electrode 14 disposed at a liquid level position to be detected in the liquid tank 12 .

The medium source position detection circuit 80 changes the capacitance when the electrode 14 is not immersed in liquid, detects the change in capacitance, and stops the pulse generation operation of the variable pulse generation circuit 20.

FIG. 3 shows an ultrasonic liquid atomization device 10 according to an embodiment of this invention.
FIG. 2 is a circuit diagram showing a specific circuit configuration.

4 and 5 are waveform diagrams for explaining the operation of this invention. In particular, for example, FIG. 4 a shows the output pulse a of the variable pulse generation circuit 20, and FIG. 4 shows the output level fixed. The waveform of the output pulse b of the drive circuit 30 in this case is shown.

Further, FIG. 5 is a waveform diagram showing the output pulse b when the output can be changed stepwise by the drive circuit 30.

Next, with reference to FIGS. 1 to 5, the specific circuit configuration and operation of FIG. 3 will be described.

First, a case will be described in which there is a predetermined amount or more of liquid in the liquid tank 12, there is no temperature abnormality, and the system is operating normally.

The ultrasonic oscillation circuit 40 includes a full-wave rectifier circuit 41, a smoothing capacitor 42, and a Colpitts oscillation circuit 43.

This full-wave rectifier circuit 41 performs full-wave rectification of the AC voltage supplied from the AC power supply 50, and the rectified voltage is transferred to the smoothing capacitor 4.
2 and is applied to the constant voltage circuit 60 via the resistor 44.

The constant voltage circuit 60 includes a Zener diode 61 and a capacitor 62, and converts the DC voltage rectified by the full-wave rectifier circuit 41 into a constant voltage and supplies it to the drive circuit 30. Variable pulse circuit 20.
to the media source position detection circuit 80.

The variable pulse generation circuit 20 stops generating variable pulses based on the detection output of the first pulse generation circuit 21 that generates pulses at a constant repetition period and the detection output of the medium source position detection circuit 80 indicating that there is no liquid. and a second pulse generation circuit 23 that generates a pulse with a variable frequency or a variable intensity between a high level period and a low level period based on the output pulse of the first pulse generation circuit 21.

Specifically, the first pulse generation circuit 21 includes a resistor 211,
The capacitor 214 is charged with a charging time constant determined by the resistance value of the capacitor 212 and the capacitance of the capacitor 214, and the terminal voltage of the capacitor 214 is applied to the programmable unijunction transistor (PUT) via the resistors 213 and 216.
) 215 between the anode and cathode.

This PUT 215 has a resistor 217 and 2
Since a constant voltage determined by a voltage division ratio of 18 is applied as the gate voltage, when the charging voltage of the capacitor 214 (that is, the terminal voltage) reaches a predetermined voltage, it becomes conductive, and the charging voltage of the capacitor 214 is discharged via the PUT 215. When the voltage is lowered to a predetermined potential, it becomes non-conductive.

At this time, a high level is derived from the cathode end of the PUT 215 during the conductive period, and a low level is derived from the cathode end during the non-conductive period.

This PUT215 output pulse is generated by resistors 211 and 212.
The signal is generated continuously at regular intervals with a time constant determined by the resistance value of the capacitor 214 and the capacitance of the capacitor 214.

The output pulse of this first pulse generating circuit 21 is given as the base input of the transistor 22.

On the other hand, the second pulse generating circuit 23 is connected to a variable resistor 231 .
The capacitor 234 is charged with a time constant determined by the resistance value of the resistor 232 and the capacitance of the capacitor 234, and when the terminal voltage of the capacitor 234 is charged to the voltage required to make the PUT 235 conductive, the PUT 235 becomes conductive. The circuit is configured as follows.

At this time, there are resistors 233 at both ends of the capacitor 234.
Since the parallel circuit of and transistor 22 is connected,
The charge in the capacitor 234 is discharged in synchronization with the conduction state of the transistor 22, which is conductive during the high level period of the output pulse of the first oscillation circuit 21.

Then, while the pulse generating circuit 21 generates one pulse, the terminal voltage of the capacitor 234 included in the second pulse generating circuit 23 reaches a voltage necessary to conduct the PUT 235, thereby rendering the PUT 235 conductive. .

As a result, a variable pulse a is derived from the cathode end of the PUT 235.

This variable pulse a becomes a pulse whose period (or duty) is varied by the variable resistor 231.

Then, the output pulse of the PUT 235 (that is, the output pulse a of the variable pulse generation circuit 20) is displayed by the operating display circuit 90.
is applied to a transistor 911 included in the transistor 911.

In the operating display circuit 90, the transistors 911 and 912 are turned on and off every time the variable pulse a is applied to intermittently flow a current to the operating display light emitting diode 17, so that the operating display light emitting diode 17 is intermittently Displays light emission.

As a result, during operation, the light emitting diode 17 emits light intermittently in synchronization with the cycle of the variable pulse a, but if the frequency of the variable pulse a is high (that is, the amount of atomization is controlled to be large), The period of intermittent display of the light emitting diode 17 becomes faster, and it appears to the user that the light is displayed continuously.

On the other hand, when the frequency of the variable pulse a is low (that is, the amount of atomization is controlled to be small), the light emitting diode 17
The light emitting display period is short and the period in which no light emitting display is performed becomes long.

Thereby, the user can see the light emitting display state (and intermittent cycle) of the light emitting diode 17, know the atomizing operation state, and know the amount of atomization at that time.

Further, the voltage at the emitter end of the transistor 912 (that is, the variable pulse a) is applied to the resistor 34 included in the drive circuit 30.
It is applied to the base input terminal of transistor 35 through.

The drive circuit 30 includes a transistor 33 that is always conductive when a transistor 85 (described later) is in a non-conductive state (that is, when the temperature is normal), and a transistor that is conductive during a low level period of the variable pulse a and non-conductive during a high level period of the variable pulse a. 35, a resistor 36 connected between the emitter and collector of the transistor 35, and a resistor 36 connected between the emitter and collector of the transistor 35.
3 and a fixed resistor 310 connected between the collector of No. 3 and the positive power supply line.

Note that when the fixed resistor 310 is connected, the output voltage of the transistor 35 is limited to a constant value, but if you want to vary the output voltage level by switching modes, use resistors 311, 312, and 313 with different resistance values. Alternatively, the selection switch 15 may be used to switch.

For example, consider the case where a fixed resistor 310 is connected between the positive power supply line and the collector terminal of the transistor 33.
During the low level period of variable pulse a, transistor 3
5 becomes conductive and derives an output with a relatively large amplitude required to drive the ultrasonic oscillation circuit 40, and the transistor 35 becomes non-conductive while the variable pulse a is at a high level.
An output with a relatively small amplitude determined by the resistance value of the resistor 36 is given to the ultrasonic oscillation circuit 40.

The output of this drive circuit 30, that is, the output voltage generated when the transistor 35 is turned on, is the output voltage of the ultrasonic transducer 70.
The output voltage is selected to be the output voltage required to excite the ultrasonic transducer 70 to atomize the liquid. The resistance value of the resistor 36 is selected so that the output voltage is low enough to cause atomization (that is, the voltage in the non-atomization region).

The output voltage of the drive circuit 30 is applied to a Colpitts oscillation circuit 43 included in the ultrasonic oscillation circuit 40.

This Colpitts oscillation circuit 43 has an oscillation coil 431, a transistor 432, and an oscillation coil 434 connected in series, an oscillation capacitor 435 connected in parallel to the series circuit of the transistor 432 and the oscillation coil 434, and a connection between the base of the transistor 432 and the ground line. An oscillation capacitor 433 is connected to the transistor 432, and a series circuit of the ultrasonic transducer 70 and a capacitor 434 is connected between the base and collector of the transistor 432.

The Colpitts oscillation circuit 43 generates a relatively large high-frequency oscillation voltage in accordance with the output voltage derived when the transistor 35 of the drive circuit 30 is turned on, and generates a relatively large high-frequency oscillation voltage to
0, and the ultrasonic transducer 70 is strongly excited.

Further, when the transistor 35 of the drive circuit 30 is non-conductive, a relatively small high frequency oscillation voltage is generated, and the ultrasonic transducer 70 is excited with a relatively weak oscillation output.

As a result, the ultrasonic transducer 70 generates a relatively strong ultrasonic output in synchronization with the period of the variable pulse a and during the high level period of the variable pulse a, and generates a relatively weak ultrasonic output during the low level period of the variable pulse a. The output is repeatedly oscillated in synchronization with the variable pulse a.

In this way, in the case of ultrasonic oscillation, the ultrasonic vibrator 70 is constantly excited, and the ultrasonic wave that atomizes the liquid is generated at the repetition period of the variable pulse a, or the ultrasonic wave is generated that is insufficient to atomize the liquid. By controlling the amount of ultrasonic waves to be generated, the amount of atomization of liquid can be controlled with high precision even if the amount of atomization is relatively small, and there is an advantage that inrush current can be reduced.

In addition, when the drive circuit 30 is configured such that the resistors 311 to 313 can be switched by the changeover switch 15, the drive circuit 30 will be configured to have the highest resistance when the resistance with the largest resistance value is selected by the changeover switch 15, as shown in FIG. The oscillation output of the ultrasonic oscillation circuit 40 is limited so that a small amount of atomization can be obtained, and the oscillation output of the ultrasonic oscillation circuit 40 is limited so that a medium amount of atomization can be obtained when a medium resistance value is selected. is increased moderately, and the oscillation output of the ultrasonic oscillation circuit 40 is increased so that the largest amount of atomization can be obtained when the smallest resistance value is selected.

Next, when the ultrasonic oscillation operation is performed as described above, when the liquid in the liquid tank 12 becomes less than a predetermined amount, the ultrasonic oscillation operation is stopped to protect the device. Explain the operation.

When there is a predetermined amount or more of liquid in the liquid tank 12, the capacitance does not change, so the Hartle oscillation circuit 82 included in the medium liquid position detection circuit 80 does not operate in oscillation.

Therefore, the transistor 831 of the switching circuit 83
becomes non-conductive, and as a result, the transistor 833 becomes conductive, so that the collector terminal of the transistor 833 is held at a low level.

Since the voltage at the collector terminal of this transistor 833 is at a low level, a drought detection signal (that is, a high level) is not applied to the transistor 85 and the transistor 22 included in the variable pulse generating circuit 20.

However, when the liquid in the liquid tank 12 becomes less than a predetermined amount, the electrode 14 is exposed from the liquid surface, so the bar I and oscillation circuit 82
The capacitance of the oscillation capacitor 821 included in the oscillation capacitor 821 changes.

Due to this change in capacitance, the Hartle oscillation circuit 82, which is composed of the oscillation capacitor 821, the oscillation coil 823, and the transistors 822 and 826, oscillates, and the oscillation output is smoothed by the capacitor 828 and is used as the base input of the transistor 831. Given.

Therefore, the transistor 831 becomes conductive, and the base input of the transistor 833 becomes low level, so that the transistor 833 becomes non-conductive.

As a result, at the collector end of the transistor 833,
A high level voltage is generated and the high level voltage is applied to the resistor 87.
1 and a diode 872 as the base input of the transistor 22 included in the variable pulse generation circuit 20.

In response, transistor 22 becomes continuously conductive;
The charge in the capacitor 234 is discharged through the resistor 233 and the collector emitter of the transistor 22.

Capacitor 234 is no longer charged to a voltage that causes PUT 235 to conduct.

As a result, the variable pulse generation circuit 20 thereafter stops generating the variable pulse a based on the drought detection output.

As a result, the light emitting display of the in-operation display light emitting diode 17 also stops, indicating that the atomization operation is in a stopped state.

On the other hand, the high level output from the collector terminal of the transistor 833 makes the transistor 85 conductive.

Accordingly, the water shortage indicator light emitting diode 18 is output from the positive power supply line.
- Resistor 861 - Current flows through the collector-emitter of transistor 85 and the light emitting diode 18 indicates a water shortage condition.

At this time, since the voltage at the collector terminal of the transistor 85 drops to a low level, the base input terminal of the transistor 33 included in the drive circuit 30 becomes a low level, and therefore the transistor 33 becomes non-conductive.

In response, the drive circuit 30 stops deriving the drive voltage, and the ultrasonic oscillation circuit 40 therefore stops the oscillation operation to stop the ultrasonic generation operation.

Note that the high frequency oscillation output of the Hartle oscillation circuit 82 is
A capacitor 81 that functions as a filter is inserted between the capacitor 821 of the Hartle oscillation circuit 82 and the electrode 14 in order to prevent the damage to the human body of the person performing the repair.

Next, the operation when a temperature abnormality occurs will be explained.

Even if there is more than a predetermined amount of liquid in the liquid tank 12, the heat generated by the power transistor 432 included in the ultrasonic oscillation circuit 40 will be reduced when used for a long time with the amount of atomization adjusted to the maximum. increases, and the power transistor 43
A thermal abnormality detection circuit 84 is provided in order to prevent the ultrasonic transducer 2 from being thermally destroyed or the ultrasonic transducer 70 from being thermally destroyed.

This thermal abnormality detection circuit 84 includes a temperature-sensitive control type switching element 841 that is arranged in relation to the mounting unit to which the ultrasonic transducer 70 or the power transistor 432 is mounted.
including.

When a thermal abnormality occurs, the temperature-sensitive control type switching element 841 becomes conductive, so that a high-level signal is applied to the base end of the I transistor 85.

In response, transistor 85 conducts and transistor 33
By forcing the drive circuit 30 to be non-conductive, generation of the drive output voltage of the drive circuit 30 is stopped.

At this time, current is supplied to the water shortage indicating light emitting diode 18 due to the conduction of the transistor 85, and the light emitting diode 18 emits light to indicate an abnormal state.

However, since the high level of the output of the temperature sensitive control type switching element 841 is not applied to the base of the transistor 22 by the relatively high resistance value resistor 842 (or even if it is applied, it does not reach the voltage that makes the transistor 22 conductive),
Transistor 22 is not conductive.

Therefore, the variable pulse generation operation of the variable pulse generation circuit 20 is not controlled to stop, and therefore the light emitting diode 17 continues to emit light intermittently.

As a result, the user sees the light-emitting display of the water shortage indicator light-emitting diode 18 and the light-emitting diode 17 and knows that the temperature is abnormal.

The temperature abnormality detection circuit 84 uses the capacitor 843 to perform a Miller integration function and applies positive feedback, so the temperature around the temperature-sensitive switching element 841 increases, causing the temperature-sensitive switching element 841 to rise. Even when 841 approaches the conductive state, the noise spikes generated at that time are removed by capacitor 843, so the operation is extremely stable.

Furthermore, once the temperature-sensitive control type switching element 841 detects a state where the temperature is higher than a predetermined temperature and becomes conductive, it maintains the conductive state (that is, it remembers the temperature abnormality detection state) until the power is cut off. After stopping the ultrasonic atomization operation, even if the temperature drops below a predetermined value, the operation does not start again, which has the advantage of improving safety.

As described above, according to this embodiment, the atomizing operation state is displayed on the operating display section (light emitting diode 17) based on the variable pulse for defining the ultrasonic oscillation period and varying the ultrasonic oscillation output. This has the advantage that it is possible to know at a glance whether or not atomization is occurring normally, and it is easy to distinguish between a malfunction state and an atomization operating state, allowing the user to use the product with peace of mind. .

Further, there is an advantage that the amount of atomization can be easily determined by checking the period of the intermittent display state or the continuous display state of the display section during operation.

Furthermore, when the atomization is operating normally, only the in-operation display is displayed; in drought conditions, the in-operation display is turned off and only the drought abnormality display is displayed; and when the temperature is abnormal, the atomization is activated. By displaying the display section and the drought abnormality display section, it is possible to display three types of abnormal states, ie, the atomization operating state, the drought abnormal state, and the temperature abnormal state, with a combination of two display sections. It has the advantage of having a simple configuration, being inexpensive, and being able to display a wide variety of conditions.

In the above-described embodiment, a case has been described in which the ultrasonic transducer is constantly excited after the power is turned on using the drive circuit 30. However, the transistor 91 included in the operating display circuit 90
The voltage at the emitter end of No. 2 (that is, the variable pulse a) may be directly applied as the base input of the transistor 432 included in the ultrasonic oscillation circuit 40 so that the ultrasonic transducer 70 is not constantly excited.

As described above, according to this invention, an ultrasonic liquid atomizing device can be obtained that displays the atomizing operation status to inform the user and gives the user a sense of security.

[Brief explanation of the drawing]

FIG. 1 is an external view of an ultrasonic atomizer 10 according to an embodiment of this invention. FIG. 2 is a block diagram of one embodiment of this invention. FIG. 3 is a specific circuit diagram of an embodiment of this invention. 4 and 5 are waveform diagrams for explaining the operation of this invention. In the figure, 10 is an ultrasonic liquid atomization device, 11 is a main body,
12 is a liquid tank, 14 is an electrode, 15 is a changeover switch, 16 is an atomization amount adjustment knob, 17 is an atomization operation display section, 18 is a water shortage state display section, 20 is a variable pulse generation circuit, 30 is a drive circuit, 40 is an ultrasonic oscillation circuit, 50 is an AC power supply, 60 is a constant voltage power supply circuit, 70 is an ultrasonic vibrator, 80 is a medium liquid position detection circuit, and 90 is an operating display circuit.

Claims (4)

[Scope of utility model registration request] (1) variable pulse generating means for generating variable pulses for defining the ultrasonic oscillation period and varying the ultrasonic oscillation output; oscillation means for performing high-frequency oscillation in synchronization with the variable pulses output from the variable pulse generating means; An ultrasonic vibrator that generates ultrasonic waves by applying a high-frequency oscillation voltage output from the oscillation means and atomizes liquid with the ultrasonic output, and displays intermittently by variable pulses output from the variable pulse generation means. An ultrasonic liquid atomizer having an atomizing operating state indicating means for operating and indicating an atomizing operating state. (2) The ultrasonic liquid atomization device includes a liquid detection means for detecting that the amount of liquid to be atomized is less than a predetermined amount, and the variable pulse generation means generates a variable pulse according to the output of the liquid detection means. The ultrasonic liquid atomization device according to claim 1, which is a registered utility model, characterized in that generation of the atomization is stopped, thereby causing a display means to stop displaying the atomization state. (3) The ultrasonic liquid atomization device further includes a water shortage display means for displaying that the amount of liquid to be atomized is less than a predetermined amount, and the water shortage display means operates to display according to the output of the liquid detection means. The ultrasonic liquid atomization device according to claim (2) of the registered utility model, characterized in that it notifies a state of drought. (4) The ultrasonic liquid atomization device includes: a liquid detection means that detects that the amount of liquid to be atomized is less than a predetermined amount; a temperature abnormality detection means that detects a temperature abnormality; and an output of the liquid detection means. or abnormality display means that is displayed by the output of the temperature abnormality detection means, and displays that the atomization is operating normally by displaying only the atomization operation state display means, and by the display of the abnormality display means. Claims for registration of a utility model, characterized in that the display indicates that the amount of liquid has fallen below a predetermined amount, and the display of the atomizing operation state display means and the abnormality display means indicates that the temperature is abnormal. The ultrasonic liquid atomization device according to item (1).