CN202497989U - Ultrasonic atomizer circuit with adjustable voltage - Google Patents

Abstract

The utility model discloses an ultrasonic atomizer circuit with an adjustable voltage. The circuit comprises a voltage adjustable direct current power supply, a branch voltage current sampling comparison circuit which is electrically connected with the voltage adjustable direct current power supply, and an oscillating circuit which is connected with the branch voltage current sampling comparison circuit. The branch voltage current sampling comparison circuit is composed of three resistors and a comparator. An isolation inductor is in series connection between the branch voltage current sampling comparison circuit and the oscillating circuit. The ultrasonic atomizer circuit has the advantages of simple structure, ingenious and reasonable design, reliable work, low cost, energy saving and environmental protection.

Description

A kind of ultrasonic ultrasonic delay line memory circuit of adjustable voltage

Technical field

The utility model relates to a kind of atomizer, relates in particular to a kind of ultrasonic ultrasonic delay line memory circuit of adjustable voltage.

Background technology

Ultrasonic ultrasonic delay line memory generally need be regulated atomization quantity, but traditional approach is to adopt fixedly supply voltage, adjusts hunting power and then adjusting atomization quantity through regulating electric current, adds magnetic with tongue tube and floats to detect and have or not lack of water.In fact, under the condition of fixing supply voltage, when atomizer had water, because piezoelectric patches receives the resistance of water when doing ultrasonic vibration, thereby consumed power was bigger, thereby the used electric current of oscillating circuit is bigger; And atomizer is when anhydrous, and then electric current is less.Therefore, we can judge that atomizer has or not lack of water with detecting the supply current size.But because atomizer can regulate atomization quantity arbitrarily as required by the user, this just means that electric current possibly be an any number, with an any number define water or anhydrous obviously be unusual difficulty.

Summary of the invention

In order to overcome the deficiency of prior art, the utility model provides the ultrasonic ultrasonic delay line memory circuit of a kind of simple in structure, reliable operation, adjustable voltage with low cost.

The utility model solves the technical scheme that its technical problem adopted:

A kind of ultrasonic ultrasonic delay line memory circuit of adjustable voltage; The dividing potential drop current sampling comparison circuit that comprise the voltage adjustable dc source, is electrically connected, the oscillating circuit that is electrically connected with dividing potential drop current sampling comparison circuit with the voltage adjustable dc source; Said dividing potential drop current sampling comparison circuit is made up of three resistance and comparator, is in series with the isolation inductance between said dividing potential drop current sampling comparison circuit and the oscillating circuit.

Said oscillating circuit is made up of three electric capacity, triode and piezoelectric patches.

The beneficial effect of the utility model is: adopt a voltage adjustable dc source to supply power to atomizer; Make benchmark with a simple dividing potential drop; Just can be so that judge and have or not lack of water to become simply through detecting the oscillating circuit supply current, adopt tongue tube to add magnetic to float and detect the frame mode that has or not lack of water thereby replaced in the past.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is the circuit block diagram of the utility model;

Fig. 2 is the circuit theory diagrams of the utility model;

Fig. 3 is the circuit theory diagrams of traditional circuit.

The specific embodiment

With reference to Fig. 1, Fig. 2, Fig. 3; A kind of ultrasonic ultrasonic delay line memory circuit of adjustable voltage; The dividing potential drop current sampling comparison circuit 2 that comprise voltage adjustable dc source 1, is electrically connected, the oscillating circuit 3 that is electrically connected with dividing potential drop current sampling comparison circuit 2 with voltage adjustable dc source 1; Said dividing potential drop current sampling comparison circuit 2 is made up of with comparator PA resistance R 1, resistance R 2, resistance R 3, is in series with between said dividing potential drop current sampling comparison circuit 2 and the oscillating circuit 3 to isolate inductance L 1.

As the optimization of above-mentioned embodiment, said oscillating circuit (3) is made up of capacitor C 1, capacitor C 2, capacitor C 3, triode Q and piezoelectric patches TD.

The operation principle of the utility model is: adopt a voltage adjustable dc source 1 to atomizer power supply, make benchmark with a simple dividing potential drop, just can have or not lack of water to become simple so that judge through detection oscillating circuit 3 supply currents.

We suppose that the user transfers voltage to V the morning ₁During value, think that atomization quantity meets the requirements, at this moment:

Supply voltage is V ₁, supply current was I when water was arranged ₁₁, be I when anhydrous ₁₂

We suppose that the user transfers voltage to V afternoon ₂During value, think that atomization quantity meets the requirements, at this moment:

Supply voltage is V ₂, supply current was I when water was arranged ₂₁, be I when anhydrous ₂₂

Prove through theory and practice:

When water was arranged, voltage with the ratio of electric current was:

$\frac{V_1}{I_{11}}=\frac{V_2}{I_{21}}=K_1$

When anhydrous, voltage with the ratio of electric current is:

$\frac{V_1}{I_{12}}=\frac{V_2}{I_{22}}={\mathrm{<figure-callout\; id="2"\; label="K"\; filenames="HSA00000688778600011.png,HSA00000688778600012.png"\; state="\{\{state\}\}">K</figure-callout>}}_2$

We simple with a resistance R to current sampling, then have:

V ₁₁＝RI ₁₁，V ₂₁＝RI ₂₁；

V ₁₂＝RI ₁₂，V ₂₂＝RI ₂₂。

Can obtain:

When water state is arranged:

V ₁ V ₂ ?K ₁

V ₁₁?V ₂₁ R

During anhydrous state:

V ₁ V ₂ K ₂

V ₁₂ V ₂₂ R

Having under the water state, because piezoelectric patches TD receives the resistance of water, piezoelectric patches TD will do work to water during vibration, thereby oscillator loading is heavier, so the power that consumes is bigger, causes supply current bigger, that is:

$\frac{V_1}{I_{11}}=\frac{V_2}{I_{21}}=K_1$ Value less;

When anhydrous, then:

$\frac{V_1}{I_{12}}=\frac{V_2}{I_{22}}={\mathrm{<figure-callout\; id="2"\; label="K"\; filenames="HSA00000688778600011.png,HSA00000688778600012.png"\; state="\{\{state\}\}">K</figure-callout>}}_2$ Value bigger,

K ₂＞K ₁

Therefore:

$\frac{V_1}{V_{12}}=\frac{V_2}{V_{22}}=\frac{K_2}{R}>\frac{K_1}{R}=\frac{V_1}{V_{11}}=\frac{V_2}{V_{21}}$

We choose a N and make satisfied following formula:

$\frac{K_2}{R}>N>\frac{K_1}{R}$

Just can judge has water or anhydrous.

Refer again to Fig. 2,

$N=\frac{R_2}{R_1+R_2},$

K wherein ₂, K ₁Can obtain through the reality test, R3 can select as far as possible little, and then calculates N, selects R1 and R2 value according to the N value again.

In addition, the utility model is not limited to above-mentioned embodiment, needs only the technique effect that reaches the utility model with essentially identical means, all belongs to the protection domain of the utility model.

Claims (2)

1. the ultrasonic ultrasonic delay line memory circuit of an adjustable voltage; It is characterized in that: comprise voltage adjustable dc source (1), the dividing potential drop current sampling comparison circuit (2) that is electrically connected with voltage adjustable dc source (1), the oscillating circuit (3) that is electrically connected with dividing potential drop current sampling comparison circuit (2); Said dividing potential drop current sampling comparison circuit (2) is made up of resistance (R1, R2, R3) and comparator (PA), is in series with between said dividing potential drop current sampling comparison circuit (2) and the oscillating circuit (3) to isolate inductance (L1).

2. the ultrasonic ultrasonic delay line memory circuit of a kind of adjustable voltage according to claim 1, it is characterized in that: said oscillating circuit (3) is made up of electric capacity (C1, C2, C3), triode (Q) and piezoelectric patches (TD).

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