CN220822927U

CN220822927U - Oscillating circuit and water treatment device

Info

Publication number: CN220822927U
Application number: CN202322033390.XU
Authority: CN
Inventors: 周振洋; 董君永; 钱律求; 曹源; 高梦奇; 唐丽; 杜宏峰
Original assignee: Runa Smart Equipment Co Ltd
Current assignee: Runa Smart Equipment Co Ltd
Priority date: 2023-07-28
Filing date: 2023-07-28
Publication date: 2024-04-19
Anticipated expiration: 2033-07-28

Abstract

An oscillating circuit comprises an inductance coil, a plurality of controllable switches and the waveform conversion device, wherein the waveform conversion device comprises a control circuit, a direct current wave generation circuit and a conversion circuit, and the conversion circuit comprises a capacitor; the direct current wave generating circuit, the inductance coil and part of the controllable switch form an inductive load branch, the direct current wave generating circuit, the inductance coil, the capacitor and part of the controllable switch form an oscillation branch, and the inductance coil is arranged corresponding to the water transmission component and is used for generating electromagnetic field signals so as to realize electromagnetic scale prevention and removal of the water transmission component.

Description

Oscillating circuit and water treatment device

Technical Field

The present utility model relates to the field of electronic technology, and in particular, to a waveform conversion device, an oscillating circuit, and a water processor.

Background

The waveform output by the DC wave generating circuit is generally a unipolar DC wave (such as a DC square wave), and few AC waves, especially those with symmetrical positive and negative amplitudes and no zero drift, are generated. For this reason, it is proposed in the related art to convert a direct current wave into an alternating current wave.

However, the above-mentioned technology requires the use of a complicated inverter circuit, resulting in high development cost, long cycle, and short service life. In addition, the converted alternating current wave is easily influenced by more components in the inverter circuit, so that the ringing phenomenon of the obtained alternating current wave is obvious, and the alternating current wave is irregular in waveform and even distorted.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present utility model is to provide a waveform conversion device, an oscillation circuit, and a water processor for converting a direct current wave into an alternating current wave and for making the converted alternating current wave zero drift free.

To achieve the above object, a first aspect of the present utility model provides a waveform converting apparatus, comprising: a control circuit, a DC wave generation circuit and a conversion circuit; the control circuit is connected with the direct current wave generation circuit and is configured to control the direct current wave with variable output frequency and duty ratio of the direct current wave generation circuit; the conversion circuit is connected to the direct current wave generation circuit and is configured to convert the direct current wave into an alternating current wave.

In addition, the waveform conversion device of the present utility model may further have the following additional technical features:

In some examples, the dc wave generation circuit includes: the input end of the driving sub-circuit is connected with the control circuit; the direct-current end of the inversion sub-circuit is configured to be connected with a preset direct-current power supply, the control end of the inversion sub-circuit is connected with the output end of the driving sub-circuit, and the alternating-current end of the inversion sub-circuit is connected with the conversion circuit; the driving sub-circuit is configured to drive the inversion sub-circuit to output the direct current wave under the action of the control circuit.

In some examples, the inverter sub-circuit includes an H-bridge composed of a first bridge arm and a second bridge arm, a bus end of the first bridge arm and a bus end of the second bridge arm are used as a direct current end of the inverter sub-circuit, a midpoint of the first bridge arm is connected with a first input end of the conversion circuit, a midpoint of the second bridge arm is connected with a second input end of the conversion circuit, and a control end of the first bridge arm and a control end of the second bridge arm are connected with an output end of the driving sub-circuit.

In some examples, the conversion circuit includes: the first end of the first capacitor is connected with the midpoint of the first bridge arm, and the second end of the first capacitor is used as a first output end of the conversion circuit; and the first end of the second capacitor is connected with the midpoint of the second bridge arm, and the second end of the second capacitor is used as the second output end of the conversion circuit.

In some examples, the first capacitance and the second capacitance employ a non-polar capacitance.

To achieve the above object, a second aspect of the present utility model provides an oscillating circuit, comprising: the switching circuit in the waveform conversion device comprises a capacitor; the direct current wave generating circuit, the inductance coil and part of the controllable switch form an inductive load branch, the direct current wave generating circuit, the inductance coil, the capacitor and part of the controllable switch form an oscillation branch, and the inductance coil is arranged corresponding to the water transmission component and is used for generating electromagnetic field signals so as to realize electromagnetic scale prevention and removal of the water transmission component.

In addition, the oscillating circuit of the present utility model may further have the following additional technical features:

in some examples, the plurality of controllable switches comprises: the first end of the first controllable switch is connected with the first output end of the direct current wave generation circuit, the second end of the first controllable switch is connected with the first end of the inductance coil, the first end of the second controllable switch is connected with the second end of the inductance coil, and the second end of the second controllable switch is connected with the second output end of the direct current wave generation circuit.

In some examples, the plurality of controllable switches further comprises: the DC wave generating circuit comprises a third controllable switch, a fourth controllable switch, a fifth controllable switch and a sixth controllable switch, wherein the first end of the third controllable switch is connected with the first output end of the DC wave generating circuit, the second end of the third controllable switch is connected with the first end of the fourth controllable switch, the second end of the fourth controllable switch is connected with the first end of the capacitor, the first end of the fifth controllable switch is connected with the second end of the capacitor, the second end of the fifth controllable switch is connected with the second end of the first controllable switch and the first end of the inductance coil respectively, the first end of the sixth controllable switch is connected with the first end of the second controllable switch and the second end of the inductance coil respectively, and the second end of the sixth controllable switch is connected with the second output end of the DC wave generating circuit.

In some examples, the number of capacitors is two, denoted as a first capacitor and a second capacitor, respectively, the first capacitor being connected between the fourth controllable switch and the fifth controllable switch, the plurality of controllable switches further comprising: and the first end of the seventh controllable switch is connected with the first end of the second controllable switch and the second end of the inductance coil respectively, and the second end of the seventh controllable switch is connected with the first end of the sixth controllable switch through the second capacitor.

To achieve the above object, a third aspect of the present utility model provides a water treatment apparatus comprising: the oscillating circuit.

The waveform conversion device, the oscillating circuit and the water processor can convert the direct-current square wave into the alternating-current square wave with equal positive and negative amplitudes, and also can convert the direct-current square wave into the alternating-current square wave with unequal positive and negative amplitudes, so that the effect of converting high-frequency and low-frequency direct-current square waves into the alternating-current square wave is realized, and the alternating-current square wave has no zero drift.

Drawings

Fig. 1 is a block diagram of a waveform converting apparatus according to an embodiment of the present utility model;

Fig. 2 is a block diagram of a dc wave generation circuit according to an embodiment of the present utility model;

FIG. 3 is a circuit topology of an inverter sub-circuit according to one embodiment of the present utility model;

FIG. 4 is a block diagram of an oscillating circuit of one embodiment of the present utility model;

FIG. 5 is a circuit topology of an oscillating circuit of one embodiment of the present utility model;

FIG. 6 is a circuit topology of an oscillating circuit according to another embodiment of the present utility model;

Fig. 7 is a block diagram of a water treatment apparatus according to an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The waveform conversion apparatus, the oscillation circuit, and the water processor according to the embodiment of the present utility model are described below with reference to the drawings.

Fig. 1 is a block diagram of a waveform converting apparatus according to an embodiment of the present utility model.

As shown in fig. 1, the waveform conversion apparatus 100 includes: a control circuit 101, a direct current wave generation circuit 102, and a conversion circuit 103; wherein, the control circuit 101 is connected with the DC wave generating circuit 102 and is configured to control the DC wave generating circuit to output the DC wave with variable frequency and duty ratio; the conversion circuit 103 is connected to the dc wave generation circuit 102 and is configured to convert a dc wave (e.g., a dc square wave) into an ac wave (e.g., an ac square wave).

The waveform conversion device provided by the embodiment of the utility model can convert the direct current wave into alternating current waves with equal positive and negative amplitudes, and also can convert the direct current wave into alternating current waves with unequal positive and negative amplitudes, so that the effect of converting high-frequency and low-frequency direct current waves into alternating current waves is realized, and the converted alternating current waves have no zero drift.

In some embodiments, as shown in fig. 2, the dc wave generation circuit 102 includes: a drive sub-circuit 201 and an inverter sub-circuit 202. The input end of the driving sub-circuit 201 is connected with the control circuit 101; the dc end of the inverter sub-circuit 202 is configured to be connected to a preset dc power supply (e.g., 24V dc power supply), the control end of the inverter sub-circuit 202 is connected to the output end of the driving sub-circuit 201, and the ac end of the inverter sub-circuit 202 is connected to the conversion circuit 103; wherein the driving sub-circuit 201 is configured to drive the inverter sub-circuit 202 to output a direct current wave under the action of the control circuit 101.

Wherein, the control circuit 101 may be a single chip microcomputer.

In some embodiments, as shown in fig. 3, the inverter sub-circuit 202 includes an H-bridge composed of a first bridge arm and a second bridge arm, where a bus terminal of the first bridge arm and a bus terminal of the second bridge arm are used as a dc terminal of the inverter sub-circuit 202, a midpoint OUT1 of the first bridge arm is connected to a first input terminal of the conversion circuit 103, a midpoint OUT2 of the second bridge arm is connected to a second input terminal of the conversion circuit, and a control terminal of the first bridge arm and a control terminal of the second bridge arm are connected to an output terminal of the driving sub-circuit 201.

Specifically, the H-bridge may include four switching tubes Q1-Q4, each of which may be connected in parallel with an anti-parallel diode, denoted as D1-D4, the first bridge arm includes switching tubes Q1, Q3 and anti-parallel diodes D1, D3, and the second bridge arm includes switching tubes Q2, Q4 and anti-parallel diodes D2, D4, where the control ends of the first bridge arm and the second bridge arm are the control ends of the corresponding switching tubes. The driving sub-circuit 201 may include two half-bridge driving chips (such as IR2104 chips), and the driving sub-circuit 201 controls the inverting sub-circuit 202, specifically: the control circuit 101 inputs pulse width modulation signals PWM1 and PWM2 to the two half-bridge driving chips respectively, and can drive the inverter sub-circuit 202 to output signals, such as driving the H-bridge to output square wave signals. The frequency, amplitude, etc. of the output signal of inverter sub-circuit 202 may be adjusted by the PWM1 and PWM2 signals.

In some embodiments, as shown in fig. 3, the conversion circuit 103 includes: a first capacitor C1 and a second capacitor C2. A first end of the first capacitor C1 is connected to the midpoint OUT1 of the first bridge arm, and a second end of the first capacitor C1 is used as a first output end of the conversion circuit 103. The first end of the second capacitor C2 is connected to the midpoint OUT2 of the second bridge arm, and the second end of the second capacitor C2 is used as the second output end of the conversion circuit 103.

In some embodiments, the first capacitor C1 and the second capacitor C2 employ a non-polar capacitor.

The following describes the principle of use of the waveform conversion apparatus 100 according to the embodiment of the present utility model with reference to fig. 1 to 3:

The control circuit 100 outputs a signal source with frequency F and duty ratio N; the signal source acts on the H bridge through the driving sub-circuit 201, and outputs a direct current square wave signal with frequency F and duty ratio N, the peak voltage of the square wave is recorded as Umax, the trough voltage is recorded as Umin, the direct current square wave signal can be measured at the output end of the H bridge by using an oscilloscope, and the trough voltage Umin=0 can be obtained. The output end of the conversion circuit 103 outputs a square wave signal with the peak voltage of Umax104 and the peak-to-valley voltage of Umin 104.

When the duty ratio N is adjusted to 10%, the square wave peak voltage Umax at the output end of the H-bridge is equal to the trough voltage umax=0, the peak voltage umax104=umax- (0.1) Umax and the trough voltage umax104= - (0.1) Umax at the output end of the conversion circuit 103. At this time, the dc square wave has been converted into an ac square wave, the peak is (0.9) ×umax, and the trough is- (1/8) ×umax.

When the duty ratio N is adjusted to 20%, the square wave peak voltage Umax at the output end of the H-bridge is equal to the trough voltage umax=0, the peak voltage umax104=umax- (0.2) Umax and the trough voltage umax104= - (0.2) Umax are equal to the peak voltage umax104=umax at the output end of the conversion circuit 103. At this time, the dc square wave has been converted into an ac square wave, the peak is (0.8) Umax, and the trough is- (0.2) Umax.

When the duty ratio N is adjusted to 30%, the peak voltage Umax of the square wave at the output end of the H-bridge is equal to umax=0, the peak voltage Umax at the output end of the conversion circuit 103 is equal to umax104=umax- (0.3) Umax, the peak voltage umax104= - (0.3) Umax, at this time, the direct current square wave is converted into an alternating current square wave, the peak is (0.7) Umax, and the trough is- (0.3) Umax.

When the duty ratio N is adjusted to 40%, the square wave peak voltage Umax at the output end of the H-bridge is equal to the trough voltage umax=0, the peak voltage umax104=umax- (0.4) Umax and the trough voltage umax104= - (0.4) Umax at the output end of the conversion circuit 103. At this time, the dc square wave has been converted into an ac square wave, the peak is (0.6) Umax, and the trough is- (0.4) Umax.

When the duty ratio N is adjusted to 50%, the square wave peak voltage Umax at the output end of the H-bridge is equal to the trough voltage umax=0, the peak voltage umax104=umax- (0.5) Umax and the trough voltage umax104= - (0.5) Umax are equal to the peak voltage umax104=umax at the output end of the conversion circuit 103. At this time, the direct current square wave is converted into an alternating current square wave, the wave peak is (0.5) Umax, the wave trough is- (0.5) Umax, and the alternating current square wave with equal positive and negative amplitude and no zero drift is output.

When the duty ratio N is adjusted to 60%, the square wave peak voltage Umax at the output end of the H-bridge is equal to the trough voltage umax=0, the peak voltage umax104=umax- (0.6) Umax and the trough voltage umax104= - (0.6) Umax are equal to the peak voltage umax104=umax at the output end of the conversion circuit 103. At this time, the dc square wave has been converted into an ac square wave, the peak is (0.4) Umax, and the trough is- (0.6) Umax.

When the duty ratio N is adjusted to 70%, the square wave peak voltage Umax at the output end of the H-bridge is equal to the trough voltage umax=0, the peak voltage umax104=umax- (0.7) Umax and the trough voltage umax104= - (0.7) Umax are equal to the peak voltage umax104=umax at the output end of the conversion circuit 103. At this time, the dc square wave has been converted into an ac square wave, the peak is (0.3) Umax, and the trough is- (0.7) Umax.

When the duty ratio N is adjusted to 80%, the square wave peak voltage Umax at the output end of the H-bridge is equal to the trough voltage umax=0, the peak voltage umax104=umax- (0.8) Umax and the trough voltage umax104= - (0.8) Umax are equal to the peak voltage umax104=umax at the output end of the conversion circuit 103. At this time, the dc square wave has been converted into an ac square wave, the peak is (0.2) Umax, and the trough is- (0.8) Umax.

When the duty ratio N is adjusted to 90%, the square wave peak voltage Umax at the output end of the H-bridge is equal to the trough voltage umax=0, the peak voltage umax104=umax- (0.9) Umax and the trough voltage umax104= - (0.9) Umax are equal to the peak voltage umax104=umax at the output end of the conversion circuit 103. At this time, the dc square wave has been converted into an ac square wave, the peak is (0.1) Umax, and the trough is- (0.9) Umax.

When the duty ratio N is adjusted to 100%, the square wave peak voltage Umax at the output end of the H-bridge is equal to wmin=0, the peak voltage Umax at the output end of the conversion circuit 103 is equal to umax104=umax- (1) ×umax, and the valley voltage umax104= - (1) ×umax. At this time, the dc square wave has been converted into an ac square wave, the peak is (0) Umax, and the trough is- (1) Umax.

From the above data, it is possible to derive the peak voltage umax104=umax-n×umax, the valley voltage umax104= -n×umax, where N is the value range [0,100] at the output of the conversion circuit 103. The alternating current square wave with freely regulated positive and negative amplitude values can be realized according to a derived formula, and then the actual positive and negative amplitude values of the output square wave can be regulated independently according to actual conditions, so that the high-frequency and low-frequency direct current square wave can be converted into high-frequency and low-frequency alternating current square wave.

In summary, by adjusting the duty ratio of the input signal source, the waveform conversion device of the embodiment of the utility model can convert the direct current square wave into the alternating current square wave with equal positive and negative amplitudes, and also can convert the direct current square wave into the alternating current square wave with unequal positive and negative amplitudes, so as to realize the effect of converting the high-frequency direct current square wave into the alternating current square wave, and the alternating current square wave after conversion can have no zero drift.

Fig. 4 is a block diagram of an oscillating circuit according to an embodiment of the present utility model.

As shown in fig. 4, the oscillating circuit 400 includes: an inductor 401, a plurality of controllable switches 402 (four controllable switches 402 are shown in fig. 4 as an example), and the waveform conversion apparatus 100 described above, the conversion circuit 103 in the waveform conversion apparatus 100 includes a capacitor 403; the direct current wave generating circuit 102, the inductance coil 401 and a part of the controllable switch 402 form an inductive load branch, the direct current wave generating circuit 102, the inductance coil 401, the capacitor 403 and a part of the controllable switch 402 form an oscillation branch, and the inductance coil 401 is arranged corresponding to the water transmission component and is used for generating electromagnetic field signals so as to realize electromagnetic scale prevention and scale removal of the water transmission component.

The number of the inductance coils 401 and the capacitors 403 can be one or more, and the capacitors 403 can be selected according to the capacitance value; the controllable switch 402 may be a thyristor, a switch tube, a relay controlled by a coil, etc., which may be on-off controlled by a controller such as a single-chip microcomputer.

In some embodiments, as shown in fig. 5, the plurality of controllable switches 402 includes: the first end of the first controllable switch 4021 is connected with the first output end of the direct current wave generating circuit 102, the second end of the first controllable switch 4021 is connected with the first end of the inductance coil 401, the first end of the second controllable switch 4022 is connected with the second end of the inductance coil 401, and the second end of the second controllable switch 4022 is connected with the second output end of the direct current wave generating circuit 102.

In some embodiments, as shown in fig. 5, the plurality of controllable switches 402 further comprises: the third controllable switch 4023, the fourth controllable switch 4024, the fifth controllable switch 4025 and the sixth controllable switch 4026, wherein a first end of the third controllable switch 4023 is connected with a first output end of the direct current wave generating circuit 102, a second end of the third controllable switch 4023 is connected with a first end of the fourth controllable switch 4024, a second end of the fourth controllable switch 4024 is connected with a first end of the capacitor 403, a first end of the fifth controllable switch 4025 is connected with a second end of the capacitor 403, a second end of the fifth controllable switch 4025 is connected with a second end of the first controllable switch 4021 and a first end of the inductor 401 respectively, a first end of the sixth controllable switch 4026 is connected with a first end of the second controllable switch 4022 and a second end of the inductor 401 respectively, and a second end of the sixth controllable switch 4026 is connected with a second output end of the direct current wave generating circuit 102.

In some embodiments, as shown in fig. 6, the number of capacitors 403 is two, respectively denoted as a first capacitor 4031 and a second capacitor 4032, the first capacitor 4031 is connected between the fourth controllable switch 4024 and the fifth controllable switch 4025, and the plurality of controllable switches 402 further includes: the seventh controllable switch 4027, a first end of the seventh controllable switch 4027 is connected to a first end of the second controllable switch 4022 and a second end of the inductor 401, respectively, and a second end of the seventh controllable switch 4027 is connected to a first end of the sixth controllable switch 4026 through a second capacitor 4032.

Compared with the arrangement of one capacitor 403 in the embodiment shown in fig. 5, in the embodiment shown in fig. 6, two sides of the inductor 402 in the oscillating branch are respectively arranged by two capacitors 403, which can protect the switching tube in the H bridge and reduce the probability of the switching tube being damaged due to heat.

It should be noted that, the third controllable switch 4043, the fourth controllable switch 4044 and the sixth controllable switch 4046 are closed, and all the other controllable switches 404 are opened, so that the direct current square wave output by the H-bridge can be converted into the alternating current square wave (the square wave output by the H-bridge moves the electrons of the two polar plates of the first capacitor 4031 and the second capacitor 4032 mutually, so that the alternating current square wave is formed). Under the condition of being connected with the induction coil 402, the alternating-current square wave can form an alternating-current sine wave under the action of the induction coil 402, so that the use effect of the water treatment device can be improved.

The principle of use of the oscillating circuit 400 according to an embodiment of the present invention is described below with reference to fig. 6:

The specific implementation method is as follows:

In the first step, the first controllable switch 4041 to the seventh controllable switch 4047 are turned off to form an open circuit by a control signal given by the singlechip, and the singlechip gives a square wave signal with the output frequency of the H-bridge being the preset frequency f, and records the current of the main circuit (the current of the main circuit where the inductive load branch and the oscillating branch are located, or the current of the power supply circuit of the H-bridge in fig. 3) as I1. After that, a control signal is given to turn on the third controllable switch 403, the main current is recorded as I2, and the power consumption current of the third controllable switch 403 is i0=i2-I1.

The main current detection can be provided with a corresponding detection circuit, such as a MAX44284 current detection amplifying circuit.

In the second step, the singlechip gives out a control signal to turn on the first controllable switch 4041 and the second controllable switch 4042, and all other controllable switches 404 are turned off, and at this time, the singlechip gives out a control signal to make the output frequency of the H bridge be a square wave signal with preset frequency f. The H-bridge, the first controllable switch 4041, the second controllable switch 4042 and the inductor 402 form a closed loop (i.e. the inductive load branch is on), and the 1 main current is recorded as I3 at this time. Since there are two controllable switches 404 in the closed loop, the actual current i4=i3-2×i0-I1 drawn through the inductor 402 can be obtained from the consumption current I0 of the single controllable switch 404 obtained in the first step.

Thirdly, according to the frequency f and the calculated current I4 given in the second step, and the effective voltage U (which can be calculated according to a square wave signal) output by the H-bridge, and the formula xl=2pi×f×l (where xl is the equivalent resistance of the coil, f is the preset frequency, and L is the inductance parameter), U/i4=2pi×f×l can be obtained, and the inductance parameter l=u/(i4×2pi×f) of the inductor 402.

Fourth, the singlechip gives out control signals to turn off the first controllable switch 4041 and the second controllable switch 4042, turn on the third controllable switch 4043-seventh controllable switch 4047, and form an oscillating branch by the H bridge, the third controllable switch 4043-seventh controllable switch 4047, the capacitor 403 and the inductance coil 402, according to a resonant frequency formula of the oscillating branch(Wherein, F is the resonant frequency of the oscillating branch, L is an inductance parameter, l=u/(i4×2pi×f), C is the capacitance of the capacitor 402, and the capacitance of the capacitor is a known parameter), and the resonant frequency F of the oscillating branch can be calculated.

And fifthly, adjusting the frequency of the H bridge through the singlechip, and adjusting the output power of the whole oscillating branch. The adjustable frequency of the H bridge can be set as [ F-N, F+N ], wherein the value of N is (-F, F), so that the oscillation branch can realize a random sweep frequency mode. Compared with fixed-point frequency output of an LC oscillating circuit in the related art, the random frequency sweep mode in the invention can be suitable for different water quality situations, and improves the adaptability of water treatment products.

Specifically, during actual product production, the parameters of the inductance coil 402 are affected by the winding process and the magnetic permeability of the ferrite core, so that the values of the inductance parameters are changed, in the related technology, the values of the inductance parameters cannot be detected, and therefore, the resonant frequency of the oscillating circuit cannot be determined, the output power of the product cannot be adjusted, the output intensity of the electromagnetic field of the same type cannot be ensured, the consistency of the product is poor, and the using effect is different.

The sixth step, the adjustment method of the power of the oscillating branch circuit comprises three steps:

1. the power output of the oscillating branch is regulated by regulating the time interval of single frequency (referring to the single frequency of the H bridge output square wave) fluctuation when the given value of N is constant;

2. The power output of the oscillation branch is regulated by continuously changing the value of N, so that the random sweep frequency mode of the oscillation circuit can be realized;

3. By adjusting the power output of the oscillating branch by changing the size of N and the time interval of the single frequency variation, a random sweep pattern of the oscillating circuit can be achieved.

The closer to the resonance frequency, the greater the output power of the oscillation branch.

And seventhly, carrying out self-adaptive adjustment on power, namely calculating actual output power P1 according to the detected main current I in real time under the condition of given output power P, comparing P1 with P, and continuously correcting the value of N according to the comparison result to realize self-adaptive adjustment on power.

Through self-adaptive adjustment, the output power of the same batch of products can be consistent, the output electromagnetic field signal intensity is stable, the product consistency is good, the defective rate is low, the use effect of the water processor is ensured, and meanwhile, the water processor products with different powers can be produced according to actual requirements, so that the actual working condition requirements are met.

As shown in fig. 7, the water processor 700 includes: the oscillating circuit 400 described above.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. An oscillating circuit, comprising: an inductance coil, a plurality of controllable switches and a waveform conversion device;

The waveform conversion device includes: a control circuit connected to the dc wave generation circuit and configured to control the dc wave generation circuit to output a dc wave with a variable frequency and a variable duty ratio, and a conversion circuit connected to the dc wave generation circuit and configured to convert the dc wave into an ac wave, the conversion circuit including a capacitor;

the direct current wave generating circuit, the inductance coil and part of the controllable switch form an inductive load branch, the direct current wave generating circuit, the inductance coil, the capacitor and part of the controllable switch form an oscillation branch, and the inductance coil is arranged corresponding to the water transmission component and is used for generating electromagnetic field signals so as to realize electromagnetic scale prevention and removal of the water transmission component.

2. The oscillating circuit of claim 1, wherein the dc wave generating circuit comprises:

The input end of the driving sub-circuit is connected with the control circuit;

The direct-current end of the inversion sub-circuit is configured to be connected with a preset direct-current power supply, the control end of the inversion sub-circuit is connected with the output end of the driving sub-circuit, and the alternating-current end of the inversion sub-circuit is connected with the conversion circuit;

the driving sub-circuit is configured to drive the inversion sub-circuit to output the direct current wave under the action of the control circuit.

3. The oscillating circuit of claim 2, wherein the inverter sub-circuit comprises an H-bridge comprising a first leg and a second leg, wherein the bus terminals of the first leg and the second leg are used as dc terminals of the inverter sub-circuit, wherein a midpoint of the first leg is connected to a first input terminal of the switching circuit, wherein a midpoint of the second leg is connected to a second input terminal of the switching circuit, and wherein a control terminal of the first leg and a control terminal of the second leg are connected to an output terminal of the driving sub-circuit.

4. The oscillating circuit of claim 1, wherein the plurality of controllable switches comprises:

The first end of the first controllable switch is connected with the first output end of the direct current wave generation circuit, the second end of the first controllable switch is connected with the first end of the inductance coil, the first end of the second controllable switch is connected with the second end of the inductance coil, and the second end of the second controllable switch is connected with the second output end of the direct current wave generation circuit.

5. The oscillating circuit of claim 4, wherein the plurality of controllable switches further comprises:

The DC wave generating circuit comprises a third controllable switch, a fourth controllable switch, a fifth controllable switch and a sixth controllable switch, wherein the first end of the third controllable switch is connected with the first output end of the DC wave generating circuit, the second end of the third controllable switch is connected with the first end of the fourth controllable switch, the second end of the fourth controllable switch is connected with the first end of the capacitor, the first end of the fifth controllable switch is connected with the second end of the capacitor, the second end of the fifth controllable switch is connected with the second end of the first controllable switch and the first end of the inductance coil respectively, the first end of the sixth controllable switch is connected with the first end of the second controllable switch and the second end of the inductance coil respectively, and the second end of the sixth controllable switch is connected with the second output end of the DC wave generating circuit.

6. The tank circuit of claim 5 wherein the number of capacitors is two, denoted as a first capacitor and a second capacitor, respectively, the first capacitor being connected between the fourth controllable switch and the fifth controllable switch, the plurality of controllable switches further comprising:

And the first end of the seventh controllable switch is connected with the first end of the second controllable switch and the second end of the inductance coil respectively, and the second end of the seventh controllable switch is connected with the first end of the sixth controllable switch through the second capacitor.

7. The oscillating circuit of claim 6, wherein the first capacitor and the second capacitor employ a non-polar capacitor.

8. A water treatment apparatus, comprising: the oscillating circuit according to any one of claims 1-7.