CN215682648U - Power supply circuit structure, drying equipment and power supply set - Google Patents

Abstract

The utility model discloses a power supply circuit structure, drying equipment and a power supply set. The power supply circuit structure is used for connecting a power supply and supplying power to the radiation source, the power supply provides alternating current signals with periodic variation, the radiation source can radiate light rays with preset frequency bands, and the power supply circuit structure comprises a main control circuit and a signal conduction circuit. The main control circuit receives and detects the alternating current signal and generates a control signal with the same frequency as the alternating current signal according to a preset frequency band, wherein the control signal comprises a zero amplitude part; the signal conduction circuit receives the alternating current signal and the control signal and generates an output signal, the amplitude of the output signal is zero in a zero amplitude part of the control signal, and the amplitude of the output signal corresponds to the amplitude of the alternating current signal in other parts of the control signal; when the output signal is input, the radiation source is used for radiating light rays of a preset frequency band, and the preset frequency band corresponds to the power of the output signal. The power supply circuit structure can realize good heating and drying effects of the radiation source.

Description

Power supply circuit structure, drying equipment and power supply set

Technical Field

The utility model relates to the field of electrical equipment, in particular to a power supply circuit structure, drying equipment and a power supply set.

Background

In the related art, when the blower is powered by accessing an ac power source, the ac power source needs to be rectified to obtain dc power, so as to supply power to the blower in a dc manner. In practical use, alternating currents have different electrical parameter standards, and for a hair dryer adopting a radiation source as a heat source, the alternating currents with different parameter standards can prevent the radiation source from radiating light rays in a preset frequency band, so that the heat productivity is unstable.

SUMMERY OF THE UTILITY MODEL

The utility model provides a power supply circuit structure, drying equipment and a power supply set.

The power supply circuit structure provided by the embodiment of the utility model is used for connecting a power supply and supplying power to a radiation source, wherein the power supply provides alternating current signals with periodic variation, and the radiation source can radiate light rays with a preset frequency band, and the power supply circuit structure comprises:

the main control circuit receives and detects the alternating current signal, and generates a control signal with the same frequency as the alternating current signal according to the preset frequency band, wherein the control signal comprises a zero amplitude part;

the signal conduction circuit is used for receiving the alternating current signal and the control signal and generating an output signal, the amplitude of the output signal is zero in the zero amplitude part of the control signal, and the amplitude of the output signal corresponds to the amplitude of the alternating current signal in other parts of the control signal;

when the output signal is input, the radiation source is used for radiating light rays of the preset frequency band, and the preset frequency band corresponds to the power of the output signal.

Above-mentioned power supply circuit structure, through changing the proportion of zero amplitude part in the control signal, the power that can accurate change power supply circuit structure exports to the radiation source to make the radiation source can output the radiant light of predetermineeing the frequency channel, and then ensure the good heating drying effect of radiation source.

In some embodiments, the power supply circuit structure includes an optical sensor, the optical sensor is configured to detect a light frequency radiated by the radiation source, and when the light frequency exceeds the preset frequency band, the main control circuit adjusts the control signal, so that the adjusted light frequency of the output signal passing through the radiation source is within the preset frequency band.

In some embodiments, the main control circuit changes the duty ratio of the zero amplitude portion, and the signal conduction circuit correspondingly adjusts the power of the output signal, so that the light frequency of the radiation source is within the preset frequency band.

In some embodiments, the power supply circuit structure includes a sampling unit, where the sampling unit is configured to sample an electrical parameter value of the output signal, and when the electrical parameter value exceeds a preset parameter threshold range, the main control circuit adjusts the control signal, so that the adjusted electrical parameter value is within the preset parameter threshold range.

In some embodiments, the main control circuit changes the duty ratio of the zero amplitude portion, and the signal conduction circuit correspondingly adjusts the power of the output signal, so that the electrical parameter value of the output signal reaches a preset electrical parameter value.

In some embodiments, the power supply circuit structure includes a protection circuit for shutting off the power supply in the event of an abnormality in the power supply.

In some embodiments, the power supply circuit structure includes a rectifier circuit, the main control circuit includes a control unit, the rectifier circuit is connected between the control unit and the power supply, and the rectifier circuit receives the ac electrical signal and outputs a dc electrical signal having a preset amplitude value to supply power to the control unit.

In some embodiments, the power supply circuit arrangement includes a monitoring circuit for monitoring an amplitude of the alternating current electrical signal, the main control circuit receiving the amplitude and adjusting the control signal.

In certain embodiments, when the number of the radiation sources is plural, the plural radiation sources are connected in series or in parallel.

In some embodiments, the power supply circuit structure includes an output rectifying unit and an output filtering unit, the output rectifying unit is connected to the output filtering unit, the output rectifying unit is configured to rectify the output signal to obtain an output rectified signal, the output filtering unit is configured to filter the output rectified signal to obtain an output filtered signal, and when the power of the output filtered signal does not satisfy a preset condition, the main control circuit is configured to adjust the control signal, so that the power of the output filtered signal obtained after adjustment satisfies the preset condition.

In some embodiments, the light within the predetermined frequency band is infrared light.

In some embodiments, the main control circuit includes a zero-crossing detection circuit configured to form a zero-crossing detection signal according to a zero-crossing time of the ac electrical signal when the ac electrical signal is applied thereto, and the main control circuit receives the zero-crossing detection signal and determines the zero-crossing time of the control signal according to the zero-crossing detection signal.

In some embodiments, the master control circuit comprises:

the control unit is connected with the zero-crossing detection circuit and is used for generating a power control signal according to the amplitude of the alternating current signal, the preset frequency band and the zero-crossing detection signal;

and the random phase circuit is connected between the control unit and the signal conduction circuit and is used for generating the control signal according to the power control signal and determining the zero-crossing time of the control signal according to the zero-crossing detection signal.

An embodiment of the present invention provides a drying apparatus, including:

a housing;

one or more radiation sources;

in the power supply circuit structure of any one of the above embodiments, the radiation source and the power supply circuit structure are disposed in the housing, and the radiation source can be connected to the power supply circuit structure.

According to the drying equipment, the power output from the power supply circuit structure to the radiation source can be accurately changed by changing the ratio of the zero amplitude part in the control signal, so that the radiation source can output radiation light in a preset frequency range, and a good heating and drying effect of the radiation source is realized.

The power supply set provided by the embodiment of the utility model comprises:

a drying apparatus comprising one or more radiation sources;

a power supply device including the power supply circuit configuration according to any one of the above embodiments;

the drying device is detachably mounted on the power supply device, and a conductive assembly used for conducting the power supply circuit structure and the radiation source is arranged at the joint of the drying device and the power supply device.

Above-mentioned power supply suit, through changing the proportion of zero amplitude part in the control signal, the power that can accurate change supply circuit structure is exported to the radiation source to make the radiation source can output the radiant light of predetermineeing the frequency channel scope, and then realize the good heating drying effect of radiation source.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 to 10 are block configuration diagrams of a power supply circuit configuration of an embodiment of the present invention;

FIG. 11 is a partial structural schematic diagram of a power supply circuit configuration according to an embodiment of the present invention;

FIG. 12 is a schematic of the variation of various signals over time for an embodiment of the present invention;

FIG. 13 is a schematic block diagram of a drying apparatus according to an embodiment of the present invention;

fig. 14 is a schematic block diagram of a power supply kit according to an embodiment of the present invention.

Description of the main element symbols:

a power supply set 1000, a power supply circuit structure 100, a drying device 200, a power supply 300, and a power supply device 400;

the circuit comprises a main control circuit 11, a control unit 111, a random phase circuit 112, a signal conducting circuit 12, a light sensor 13, a sampling unit 14, a protection circuit 15, a rectifying circuit 16, a monitoring circuit 17, an output rectifying unit 181, an output filtering unit 182 and a zero-crossing detection circuit 19;

a radiation source 21, a housing 22;

a conductive member 51.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to 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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1 and fig. 2, a power supply circuit structure 100 according to an embodiment of the present invention is provided for connecting a power source 300 to supply power to one or more radiation sources 21. The power supply 300 is capable of providing a periodically varying alternating current signal, which is known in the relevant art as a current having a current direction that varies periodically with time, and in a more specific embodiment, the power supply 300 may be a commercial frequency alternating current. The radiation source 21 is an electrical component capable of radiating light after being energized, and the frequency band of the radiated light is related to the input electrical signal, that is, if the radiation source 21 is required to radiate light of a certain frequency band, an electrical signal with corresponding power is required to be input. In the operation process, the power supply circuit structure 100 receives the ac electrical signal and generates an output signal after adjustment, and the output signal is led into the radiation source 21 to enable the radiation source to radiate light of a preset frequency band, in other words, the power of the output signal is the input power of the radiation source 21.

The power supply circuit structure 100 specifically includes a main control circuit 11 and a signal conduction circuit 12, the main control circuit 11 is connected to the power supply 300, receives and detects an ac signal, and generates a control signal according to a preset frequency band, the control signal and the ac signal have the same frequency, that is, the same period, and a zero amplitude portion, that is, a portion whose amplitude is zero, is included in the control signal. It will be readily understood that, since the control signal is a periodic signal, the duty ratio of the zero amplitude portion described below means the duty ratio of the zero amplitude portion in each period of the control signal. The signal conducting circuit 12 is used for generating an output signal according to the alternating current signal and the control signal. The output signal is also of the same frequency as the alternating current signal, i.e. has the same period. In the zero amplitude part of the control signal, the amplitude of the output signal is zero, and no power is output; in other parts of the control signal, the amplitude of the output signal corresponds to the amplitude of the alternating current signal. And (3) introducing an output signal generated in the process into the radiation source 21, so that the radiation source 21 can radiate light rays in a preset frequency band.

It will be readily appreciated that the power supplied by the power supply 300 is much greater than the power required by the radiation source 21, and therefore the process of generating an output signal from an alternating current signal, i.e. the process of reducing the power of the alternating current signal as required. In the process that the power supply circuit structure 100 generates the output signal according to the alternating current signal and the preset frequency band, the ratio of the determined zero amplitude part is equivalent to cutting off the power of the alternating current signal in the interval where the zero amplitude part corresponding to the alternating current signal is located in each period, so that the output signal meeting the power supply requirement of the radiation source 21 is generated after the power of the cut-off part is reduced from the alternating current signal, and the power supply to the radiation source 21 is realized and the radiation source can radiate the light of the preset frequency band.

In other words, by changing the ratio of the zero amplitude portion in the control signal, the power output from the power supply circuit structure 100 to the radiation source 21 can be accurately changed, so that the radiation source 21 can output radiation light in a preset frequency band, and it is ensured that the radiation source 21 can maintain a good heating and drying effect during operation.

In addition, when the number of the radiation sources 21 is plural, in some embodiments, the plural radiation sources 21 may be connected in series in sequence, or may be connected in parallel with each other. Specifically, whether the plurality of radiation sources 21 are connected in series or in parallel should be determined as the case may be, or determined through actual tests.

For convenience of description, in the following embodiment, the case that the number of the radiation sources 21 is one is described, and it is understood that when the number of the radiation sources 21 is multiple, an equivalent radiation source 21 can be obtained according to a topological structure among the multiple radiation sources 21, so that the equivalent radiation source 21 can be regarded as one radiation source 21, and an input to the equivalent radiation source 21 is still an output signal generated by the signal conducting circuit 12.

Referring to fig. 3, the power supply circuit structure 100 includes an optical sensor 13, the optical sensor 13 is configured to detect a light frequency radiated by the radiation source 21 and send obtained data to the main control circuit 11, and when the light frequency exceeds a preset frequency band, the main control circuit 11 is configured to adjust a control signal, so that the light frequency radiated by an output signal obtained by introducing the adjusted radiation source 21 returns to the preset frequency band.

In this way, the input power of the radiation source 21, that is, the power of the output signal generated by the signal-conducting circuit 12, can be adjusted by the frequency feedback of the light actually radiated by the radiation source 21.

Specifically, referring to fig. 3, the optical sensor 13 may be disposed at a position where the light emitted from the radiation source 21 can be irradiated, so that the optical sensor 13 can receive the light emitted from the radiation source 21 and detect the frequency of the light, and the detected data is sent to the main control circuit 11. When the detected light frequency is in the preset frequency band, it can be determined that the radiation source 21 radiates light in the preset frequency band, and it can be correspondingly determined that the output signal introduced into the radiation source 21 can meet the power supply requirement. And when the detected light frequency is not in the preset frequency band, it is determined that the current output signal fails to meet the power supply requirement of the radiation source 21, at this time, the control signal is adjusted by the main control circuit 11, the signal conduction circuit 12 correspondingly adjusts the output signal, the output signal generated after the adjustment is introduced into the radiation source 21, the light frequency of the radiation source 21 is detected again by the optical sensor 13, if the light frequency returns to the preset frequency band at this time, the adjustment process is completed, and if the light frequency is still outside the preset frequency band, the adjustment process is repeated again until the purpose of adjusting the light frequency radiated by the radiation source 21 to be in the preset frequency band is finally achieved. It is easy to understand that the radiation process of the radiation source 21 is a continuous process, and if the output signal itself fluctuates, the frequency of the light radiated by the radiation source 21 will change immediately, so the above process of detecting feedback and adjusting the output signal by the optical sensor 13 is a continuous closed-loop control process, detecting feedback in real time, and keeping dynamic adjustment to ensure that the light radiated by the radiation source 21 is within the preset frequency band during continuous operation.

In an embodiment, when it is determined that the frequency of the light emitted by the radiation source 21 is lower than the preset frequency band, it may be determined that the input power of the radiation source 21 is relatively low, and then the first output signal adjustment information may be sent to the main control circuit 11 through the optical sensor 13, so that the main control circuit 11 reduces the duty ratio of a zero amplitude portion in the control signal after receiving the first output signal adjustment information, so that the ac electrical signal may output more power to the radiation source 21 within a period, and further, the frequency of the light emitted by the radiation source 21 may be increased to the preset frequency band.

In another embodiment, when it is determined that the frequency of the light emitted by the radiation source 21 is higher than the preset frequency band, it may be determined that the input power of the radiation source 21 is relatively high, and then the optical sensor 13 may send the second output signal adjustment information to the main control circuit 11, so that the main control circuit 11 increases the duty ratio of the zero amplitude portion in the control signal after receiving the second output signal adjustment information, so that the ac electrical signal may output less power to the radiation source 21 within a cycle, and further, the frequency of the light emitted by the radiation source 21 may be reduced to the preset frequency band.

In other embodiments, the signal sent by the optical sensor 13 to the main control circuit 11 may only include the detected light frequency, and the main control circuit 11 compares the light frequency with the preset frequency band after receiving the signal to determine whether the control signal needs to be adjusted, and the adjustment manner of the control signal, such as increasing or decreasing the ratio of the zero amplitude part.

In summary, in some embodiments, when the frequency of the light radiated by the radiation source 21 needs to be adjusted, the main control circuit 11 adjusts the control signal, and the ratio of the zero amplitude portion is changed to adjust the power of the output signal, so that the frequency of the light radiated by the radiation source 21 is within the preset frequency band.

In addition, in other embodiments, the preset frequency band may be determined by specific conditions, or may be calibrated according to actual tests. The specific case can be for the condition that actually uses power supply circuit structure 100 in order to charge drying equipment 100, and the user can come to carry out artificial adjustment to the preset frequency channel according to actual demand to the preset frequency channel after making the adjustment can accord with user's demand. The actual test may be a parameter test in which a parameter before the power supply circuit structure 100 leaves a factory is calibrated, and by calibrating the parameter before the power supply circuit structure 100 leaves the factory, a specific range of a preset frequency band may be specified, so that the setting may not be performed in a use process.

In some embodiments, a fixed frequency band may be preset as the preset frequency band, and the radiation source 21 only radiates light within the preset frequency band when operating.

In some embodiments, the predetermined frequency band may be adjusted in response to external operation, i.e., the radiation source 21 may be adjusted to radiate different light frequencies during operation. It will be readily appreciated that in this embodiment, real-time adjustment of the control signal in accordance with the adjusted frequency of light is required to enable the radiation source 21 to achieve an adjustable effect.

In some embodiments, the light within the predetermined frequency band is infrared light.

Specifically, in one embodiment, when the radiation source 21 radiates infrared light, the object may be radiated by infrared light to have a characteristic of heating the radiated object, so that the radiation source 21 has an effect of heating and drying.

Referring to fig. 4, the power supply circuit structure 100 includes a sampling unit 14, where the sampling unit 14 is configured to sample an electrical parameter value of the output signal, and when the sampled electrical parameter value exceeds a preset parameter threshold range, the main control circuit 11 is configured to adjust the control signal, so that the electrical parameter value of the output signal obtained after adjustment is within the preset parameter threshold range.

In this way, the input power of the radiation source 21 can be adjusted by feedback of the electrical parameter value of the output signal.

In one embodiment, the electrical parameter value of the output signal may be determined on a case-by-case basis, or may be calibrated based on actual testing. In a more specific real-time mode, the electrical parameter value of the output signal may be a voltage value of the output signal, a current value of the output signal, or a power of the output signal.

Specifically, referring to fig. 4, when the electrical parameter value sampled by the sampling unit 14 is within the preset parameter threshold range, it may be determined that the radiation source 21 performs light radiation in the preset frequency band. When the electrical parameter value sampled by the sampling unit 14 exceeds the preset parameter threshold range, it may be determined that the radiation source 21 fails to perform light radiation in the preset frequency band, and at this time, the control signal is adjusted by the main control circuit 11, so that the output signal may be correspondingly adjusted, the electrical parameter value returns to the preset parameter threshold range, and finally, the purpose of adjusting the radiation source 21 to perform light radiation in the preset frequency band is achieved. It is easy to understand that, in this embodiment, the process of adjusting the control signal is also a continuous dynamic adjustment process, the sampling unit 14 samples the electrical parameter value of the output signal in real time, and performs adjustment when the electrical parameter value exceeds the preset parameter threshold range, and if the electrical parameter value of the adjusted output signal still exceeds the preset parameter threshold range, the main control circuit 11 continues to perform adjustment until the electrical parameter value of the output signal returns to the preset parameter threshold range.

In an embodiment, when it is determined that the electrical parameter value sampled by the sampling unit 14 is lower than the preset parameter threshold range, it may be determined that the input power of the radiation source 21 is lower, so that the light frequency radiated by the radiation source 21 is also lower, and then the sampling unit 14 may send third output signal adjustment information to the main control circuit 11, so that the main control circuit 11, after receiving the third output signal adjustment information, reduces the duty ratio of a zero amplitude portion in the control signal, and increases the electrical parameter value of the output signal until the electrical parameter value is in the preset parameter threshold range, so that it may be determined that the ac signal can output more power to the radiation source 21 within a period, and further, the light frequency radiated by the radiation source 21 may be increased to the preset frequency band.

In another embodiment, when it is determined that the electrical parameter value sampled by the sampling unit 14 is higher than the preset parameter threshold range, it may be determined that the input power of the radiation source 21 is higher, so that the frequency of the light radiated by the radiation source 21 is also higher, and then the sampling unit 14 may send fourth output signal adjustment information to the main control circuit 11, so that the main control circuit 11 increases the duty ratio of a zero amplitude portion in the control signal after receiving the fourth output signal adjustment information, and decreases the electrical parameter value of the output signal until the electrical parameter value is in the preset parameter threshold range, so that it may be determined that the ac electrical signal can output less power to the radiation source 21 within a period, and further decrease the frequency of the light radiated by the radiation source 21 to the preset frequency band.

In other embodiments, the signal sent by the sampling unit 14 to the main control circuit 11 may only include the sampled electrical parameter value, and the main control circuit 11 compares the electrical parameter value with a preset parameter threshold range after receiving the signal to determine whether the control signal needs to be adjusted, and the adjustment mode of the control signal, such as increasing or decreasing the ratio of the zero amplitude part.

In summary, in some embodiments, when the main control circuit 11 adjusts the control signal, the ratio of the zero amplitude portion in the control signal is changed to adjust the power of the output signal, so that the electrical parameter value of the output signal is within the preset parameter threshold range.

Referring to fig. 5, the power supply circuit structure 100 includes a protection circuit 15, the main control circuit 11 is connected to the power supply 300 through the protection circuit 15, and when an abnormality occurs in the power supply 300, the protection circuit 15 is configured to cut off the power supply 300, that is, disconnect the power supply 300 from the main control circuit 11, so as to provide protection for the power supply circuit structure 100.

Specifically, in the embodiment shown in fig. 5, the power supply 300 is connected to the power supply circuit structure 100 through the protection circuit 15, and when an abnormality occurs in the power supply 300 (for example, the voltage amplitude exceeds the rated amplitude), the protection circuit 15 can prevent the main control circuit 11 from being damaged when the abnormality occurs in the power supply 300, so that the protection circuit 15 can disconnect the main control circuit 11 from the power supply 300, the main control circuit 11 can be prevented from affecting the input power of the radiation source 21 due to unstable power supply, the damage of the components of the power supply circuit structure 100 can be prevented, and the safety of the power supply circuit structure 100 is improved. In more specific embodiments, the protection circuit 15 may include air-operated safety switches, fuses, and the like, which are directly opened when power is excessive.

Referring to fig. 6, the power supply circuit structure 100 includes a rectifying circuit 16, the main control circuit 11 includes a control unit 111, the rectifying circuit 16 is connected between the control unit 111 and the power supply 300, and the rectifying circuit 16 is used for rectifying an ac electrical signal and outputting a dc electrical signal to power the control unit 111.

Specifically, in the embodiment shown in fig. 6, the periodically-varying alternating current signal output by the power supply 300 may be rectified by the rectifying circuit 16, so as to convert the alternating current signal into a direct current signal, and the output direct current signal may be used for supplying power to the control unit 111. In one embodiment, the dc electrical signal is a voltage signal, and the predetermined amplitude is a voltage amplitude of the dc electrical signal. In addition, the preset amplitude of the direct current signal can be determined according to specific conditions, and can also be calibrated through actual tests. In another embodiment, the predetermined amplitude of the dc signal converted by the rectifying circuit 16 may be 3.3V.

In addition, in some embodiments, a voltage regulating circuit may be further connected between the rectifying circuit 16 and the control unit 111, so that the dc signal can be regulated by the voltage regulating circuit, and then the regulated dc signal is output to the control unit 111 to supply power to the control unit 111.

The control unit 111 is an electrical component with data processing capability, which has high sensitivity to the power supply signal, and needs to supply power after rectifying and regulating the alternating current signal, so a special rectifying circuit 16 is provided. In other words, after the ac signal enters the power supply circuit structure 100, the ac signal is divided into at least two paths (see fig. 11), one path enters the rectifier circuit 16, and after rectification and/or voltage regulation, the ac signal is supplied to the control unit 111, the other path enters the signal conducting circuit 12, the signal conducting circuit 12 adjusts the ac signal led into the path according to the control signal sent by the control unit 111, and the generated output signal supplies power to the radiation source 21.

Referring to fig. 7, the power supply circuit structure 100 includes a monitoring circuit 17, the monitoring circuit 17 is connected to the main control circuit 11, and the monitoring circuit 17 is used for monitoring the amplitude of the ac electrical signal. The main control circuit 11 receives an amplitude adjustment control signal of the alternating current signal. In more specific embodiments, the detection circuit 17 may be directly connected to the power source 300 to detect the amplitude of the ac electrical signal, or may detect the amplitude of the ac electrical signal by communicating with the main control circuit 11.

Therefore, the alternating current signal can be adjusted in time when the alternating current signal is abnormal.

Specifically, in one embodiment, the monitoring circuit 17 may monitor the amplitude of the ac signal, and notify the main control circuit 11 when the amplitude of the ac signal changes, so that the main control circuit 11 adjusts the control signal according to the current amplitude of the ac signal. In some such embodiments, when the amplitude of the alternating current is increased, the main control circuit 11 correspondingly increases the duty ratio of the zero amplitude part in the control signal to decrease the power of the output signal, and when the amplitude of the alternating current is decreased, the main control circuit 11 correspondingly decreases the duty ratio of the zero amplitude part in the control signal to increase the power of the output signal. In one embodiment, the amplitude of the AC electrical signal is 220V, and the AC electrical signal varies by [ -20%, 20% ].

Referring to fig. 8, the power supply circuit structure 100 includes an output rectifying unit 181 and an output filtering unit 182, the output rectifying unit 181 is connected to the output filtering unit 182, the output rectifying unit 181 is configured to rectify an output signal to obtain an output rectified signal, the output filtering unit 182 is configured to filter the output rectified signal to obtain an output filtered signal, power of the output filtered signal is capable of reflecting power of the output signal, the output rectified signal and the output filtered signal have a certain mathematical relationship, the specific relationship is determined by an actual circuit design, when the power of the output filtering signal does not meet the preset condition, it is known that the power of the output signal also cannot meet the input power requirement of the radiation source 21, the main control circuit 11 is used for adjusting the control signal, so that the adjusted power of the output filtered signal meets the preset condition, i.e. the power of the output signal meets the input power requirement of the radiation source 21.

In this way, it is possible to avoid that the stability of the power of the output signal is insufficient to influence the input power to the radiation source 21.

Specifically, in the embodiment shown in fig. 8, the signal conducting circuit 12 is connected to the output rectifying unit 181, and when the signal conducting circuit 12 generates the output signal, the output rectifying unit 181 and the radiation source 21 are synchronously conducted to the output signal, so that the output filtering unit 182 can synchronously obtain the output filtered signal to synchronously detect the output signal conducted to the radiation source 21. Subsequent processing of the output signal may be facilitated by rectification by the output rectification unit 181 and filtering by the output filtering unit 182.

In some embodiments, when the power of the output filtered signal obtained by filtering through the output filtering unit 182 can satisfy the preset condition, it is determined that the current output signal can radiate light in the preset frequency band after passing through the radiation source 21. When the power of the output filtering signal obtained by filtering through the output filtering unit 182 is too high or too low, it may be determined that the power of the output signal is also too high or too low, that is, the current output signal cannot radiate light within the preset frequency band after passing through the radiation source 21, and if the radiation source 21 is powered, the frequency of the light radiated by the radiation source 21 is easily beyond the preset frequency band.

In one embodiment, the output adjustment signal may be sent to the main control circuit 11 through the output filtering unit 182, and the main control circuit 11 may determine whether the power of the output signal is higher or lower according to the output adjustment signal when receiving the output adjustment signal sent by the output filtering unit 182. When the power of the output signal is determined to be high, the duty ratio of the zero amplitude part in the control signal can be increased, so that the alternating current signal can output less power to the radiation source 21 in a period, the input power can be reduced, and the frequency of light radiated by the radiation source 21 can be reduced until the light returns to the preset frequency band. When the power of the output signal is determined to be low, the duty ratio of a zero amplitude part in the control signal can be reduced, so that the alternating current signal can output more power to the radiation source 21 in a period, the input power can be improved, and the frequency of light rays radiated by the radiation source 21 can be increased until the light rays return to the corresponding preset frequency band.

In addition, in other embodiments, the power supply circuit structure 100 may further perform voltage stabilization processing on the output filtered signal, so that the voltage of the output filtered signal may be more stable, and thus, more accurate power detection may be performed on the output filtered signal.

Referring to fig. 9, the main control circuit 11 includes a zero-crossing detection circuit 19, when the ac electrical signal is fed, the zero-crossing detection circuit 19 is configured to form a zero-crossing detection signal according to a zero-crossing time of the ac electrical signal, and the main control circuit 11 receives the zero-crossing detection signal and determines a zero-crossing time of the control signal according to the zero-crossing detection signal.

In this way, the start time of each cycle of the control signal can be conveniently determined.

Specifically, in the embodiment shown in fig. 9, the zero-cross detection circuit 19 is connected between the main control circuit 11 and the power supply 300, when the power supply 300 supplies an ac electrical signal to the zero-cross detection circuit 19, the zero-cross detection circuit 19 may generate a zero-cross detection signal, where the zero-cross detection signal is a square wave signal that starts from a zero-cross time of the ac electrical signal and lasts for a preset time duration, and when the main control circuit 11 receives the zero-cross detection signal, the start time of each period of the control signal is determined according to the square wave signal in the zero-cross detection signal, so as to ensure that the control signal can be synchronized with the ac electrical signal, so that an output signal can be generated according to the ac electrical signal and the control signal that are synchronized, and the three maintain the same phase. In one embodiment, the predetermined duration is less than half of the period of the alternating current signal.

In a specific embodiment, the zero amplitude portion in each period of the control signal also starts from the zero-crossing time, i.e. the zero-crossing detection signal is simultaneously used as the starting time reference for the zero amplitude portion. Since the zero amplitude part and the zero-crossing time are both zero in amplitude on the waveform, the zero-crossing time is taken as the starting time of the zero amplitude part, so that the part with zero amplitude in the control signal is continuous.

In other embodiments, the zero-amplitude portion may be delayed by a predetermined time from the zero-crossing time.

Referring to fig. 10, in some embodiments, the main control circuit 11 includes a control unit 111 and a random phase circuit 112, the control unit 111 is connected to the zero-crossing detection circuit 19, the random phase circuit 112 is connected between the control unit 111 and the signal conducting circuit 12, the control unit 111 is configured to generate a power control signal according to the amplitude of the alternating current signal, the preset frequency band and the zero-crossing detection signal, and the random phase circuit 112 is configured to generate the control signal according to the power control signal and determine the zero-crossing time of the control signal according to the zero-crossing detection signal.

In this way, it is possible to synchronize the control signal with the zero-crossing timing of the alternating-current electric signal based on the zero-crossing detection signal and to serve as the start point of the signal period.

Specifically, in the embodiment shown in fig. 10, when the power supply 300 supplies the ac electrical signal to the zero-cross detection circuit 19, the zero-cross detection circuit 19 may generate a square wave signal that will last for a preset time period at the zero-cross time according to the ac electrical signal, and output the signal as zero when the ac electrical signal exceeds the preset time period from the zero-cross time, so as to form a zero-cross detection signal, so that the main control circuit 11 may determine the zero-cross time of the ac electrical signal according to the amplitude of the ac electrical signal, the preset frequency band, and the zero-cross detection signal when receiving the zero-cross detection signal, so as to generate a power control signal, and the random phase circuit 112 may generate the control signal according to the power control signal when receiving the power control signal, and may determine the phase of the control signal according to the zero-cross time of the ac electrical signal, so as to ensure that the control signal is synchronized with the start of the signal period of the ac electrical signal, and obtains the adjusted control signal so that the signal-conducting circuit 12 determines the phase of the output signal according to the control signal. The control signal can be synchronized with the alternating current signal and the control signal in a period by taking the zero-crossing time in the alternating current signal as a reference through the zero-crossing detection signal to be used as the starting point of the signal period so as to ensure phase synchronization, thereby achieving the aim of accurately adjusting the alternating current signal to obtain a required output signal.

Referring to fig. 11 and 12, in the embodiment shown in fig. 11, the ac signal provided by the power supply 300 and shown in fig. 12 is 220V ac, the protection circuit 15 is connected after the power supply 300 is switched, the rectification circuit 16, the zero-cross detection circuit 19 and the signal conduction circuit 12 are respectively connected after the protection circuit 15, the voltage regulation circuit structure for regulating voltage is connected after the rectification circuit 16, the electric signal obtained by the rectification circuit 16 is 310V dc, and the 310V dc can be sequentially reduced to 15V, 5V and 3.3V by the voltage regulation circuit structure, so that a regulated dc signal with a preset amplitude of 3.3V is obtained, and the control unit 111 is powered by the regulated dc signal. The monitoring circuit 17 is connected to the control unit 111 through a voltage dividing resistor, so that the amplitude of the alternating current signal can be monitored by the control unit 111. The zero-cross detection circuit 19 outputs a zero-cross detection signal shown in fig. 12 to the control unit 111 after the alternating current signal is input, so that the control unit 111 determines a power control signal according to the alternating current signal and a preset frequency band of the radiation source 21, and sends the power control signal to the phase random circuit, and the phase random circuit correspondingly generates the control signal shown in fig. 12 after receiving the power control signal, so that the signal conduction circuit 12 generates an output signal shown in fig. 12 according to the control signal and the alternating current signal, and finally the radiation source 21 radiates light in the preset frequency band after the output signal is input.

In one embodiment, the protection circuit 15 may include an X capacitor (differential mode interference suppression capacitor), a Y capacitor (common mode interference suppression capacitor), an MOV (metal-oxide-varistor), and a Fuse.

In one embodiment, the signal conducting circuit 12 may include a lamp cup thyristor, so that the ac signal can be controlled to be conducted or disconnected by the lamp cup thyristor according to the control signal.

In one embodiment, a fuse is connected between the signal conducting circuit 12 and the radiation source 21, and when the power of the output signal is too high, the fuse can be automatically fused to disconnect the power supply circuit structure 100 from the radiation source 21, thereby preventing spontaneous combustion of the object caused by overloading the radiation source 21 and emitting light with a higher frequency to the surrounding object.

Referring to fig. 13, a drying apparatus 200 according to an embodiment of the present invention includes a housing 22, a radiation source 21, and the power supply circuit structure 100 according to any of the above embodiments, the radiation source 21 and the power supply circuit structure 100 are disposed in the housing 22, and the radiation source 21 can be connected to the power supply circuit structure 100.

Above-mentioned drying equipment 200, through obtaining the preset frequency channel of alternating current signal and radiation source 21, make supply circuit structure 100 can adjust the power of alternating current signal output, at control signal's zero amplitude part, cut off the power of alternating current signal in this interval equivalently, thereby intercept partial power in order to satisfy the power supply needs of radiation source 21 in the alternating current signal, thereby reach the effect of the power of control output signal, the power of adjustment to radiation source 21 output that can be accurate through adjusting control signal, thereby make radiation source 21 can output the radiant light of presetting the frequency channel, and then ensure the good drying effect that radiation source 21 can keep.

It is understood that the specific process and principle of the power supply circuit structure 100 for supplying power to the radiation source 21 have been described in the foregoing embodiments, and are not expanded herein for avoiding redundancy.

In addition, in the embodiment shown in fig. 13, the number of the radiation sources 21 is one, and it is understood that in other embodiments, the drying apparatus 200 may be provided with a plurality of radiation sources 21 according to specific situations, and the plurality of radiation sources 21 are connected to the power supply circuit structure 100, so that the power supply circuit structure 100 can supply power to the plurality of radiation sources 21. The drying device 200 may be a blower.

Referring to fig. 14, in the power supply kit according to the embodiment of the present invention, the power supply kit includes a drying device 200 and a power supply device 400 that are detachably connected, and a conductive component 51 is disposed at a connection position of the drying device 200 and the power supply device 400, so as to enable the power supply circuit structure 100 and the radiation source to be conducted when the drying device 200 and the power supply device 400 are in a connected state, so that the power supply circuit structure 100 can supply power to the radiation source 21. The drying apparatus 200 comprises one or more radiation sources 21 and the power supply apparatus 400 comprises the power supply circuit arrangement 100 according to any of the embodiments described above. When the drying apparatus 200 is connected to the power supply apparatus 400, the power supply circuit configuration 100 is used to supply power to the radiation source 21 by connecting the power supply 300. The conductive element 51 may be a plurality of contacts, plugs, sockets, etc., which is not the focus of the embodiment.

Specifically, the drying apparatus 200 may be connected to the power supply apparatus 400, and when the power supply apparatus 400 is connected to the power supply 300, power supply to the radiation source 21 of the drying apparatus 200 may be achieved through the power supply circuit configuration 100 of the power supply apparatus 400. When the power supply device 400 completes power supply to the drying device 200, the drying device 200 can be detached from the power supply device 400, and the drying device 200 can be conveniently placed, stored or carried separately, so that the power supply circuit structure 100 does not need to be arranged on the drying device 200, and the overall structure of the drying device 200 is prevented from being too large. The power supply apparatus 400 may be a power adapter.

Above-mentioned power supply suit, through the preset frequency channel that obtains alternating current signal and radiation source 21, make power supply circuit structure 100 can adjust the power of alternating current signal output, at control signal's zero amplitude part, cut off the power of alternating current signal in this interval equivalently, thereby intercept partial power in order to satisfy the power supply needs of radiation source 21 in the alternating current signal, thereby reach the effect of control output signal's power, through adjusting the power that control signal can accurate adjustment is exported to radiation source 21, so that the voltage of radiation source 21 has better stability, thereby ensure that radiation source 21 can export the radiant light of presetting the frequency channel, and then ensure that radiation source 21 can keep good drying effect.

In addition, in the embodiment shown in fig. 14, the number of the radiation sources 21 is one, and it is understood that in other embodiments, the drying apparatus 200 may be provided with a plurality of radiation sources 21 according to specific situations, and the plurality of radiation sources 21 are connected to the power supply circuit structure 100, so that the power supply circuit structure 100 can supply power to the plurality of radiation sources 21.

The number of the drying devices 200 and the power supply devices 400 in the power supply set may be one-to-one, or there may be a case where there are one-to-many. In one embodiment, a plurality of drying apparatuses 200, such as a blower, a hand dryer, a dryer, etc., share one power supply apparatus 400, and are detachably used as needed to save cost. In another specific embodiment, for example, the drying device 200 is a blower, the number of the power supply devices 400 is multiple, and a user places one power supply device 400 at home, at an office, at a gym, and when the user needs to use the drying device 200 at a different place, the user only needs to carry the drying device 200 to the corresponding place, and install the drying device 200 on the power supply device 400 arranged at the corresponding place for use, which is convenient to carry.

In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", 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 invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (15)

1. A power supply circuit structure for connecting a power supply and supplying power to a radiation source, the power supply providing an alternating current signal that varies periodically, the radiation source being capable of radiating light of a predetermined frequency band, comprising:

the main control circuit receives and detects the alternating current signal, and generates a control signal with the same frequency as the alternating current signal according to the preset frequency band, wherein the control signal comprises a zero amplitude part;

the signal conduction circuit is used for receiving the alternating current signal and the control signal and generating an output signal, the amplitude of the output signal is zero in the zero amplitude part of the control signal, and the amplitude of the output signal corresponds to the amplitude of the alternating current signal in other parts of the control signal;

when the output signal is input, the radiation source is used for radiating light rays of the preset frequency band, and the preset frequency band corresponds to the power of the output signal.

2. The power supply circuit structure of claim 1, wherein the power supply circuit structure comprises an optical sensor, the optical sensor is configured to detect a light frequency radiated by the radiation source, and when the light frequency exceeds the preset frequency band, the main control circuit adjusts the control signal, so that the adjusted light frequency of the output signal passing through the radiation source is within the preset frequency band.

3. The power supply circuit structure of claim 1 or 2, wherein the main control circuit changes the duty ratio of the zero amplitude portion, and the signal conducting circuit correspondingly adjusts the power of the output signal, so that the light frequency of the radiation source is within the preset frequency band.

4. The power supply circuit structure according to claim 1, wherein the power supply circuit structure includes a sampling unit, the sampling unit is configured to sample an electrical parameter value of the output signal, and when the electrical parameter value exceeds a preset parameter threshold range, the main control circuit adjusts the control signal so that the adjusted electrical parameter value is within the preset parameter threshold range.

5. The power supply circuit structure of claim 4, wherein the main control circuit changes the duty ratio of the zero amplitude portion, and the signal conducting circuit correspondingly adjusts the power of the output signal, so that the electrical parameter value of the output signal reaches a preset electrical parameter value.

6. The power supply circuit arrangement according to claim 1, characterized in that the power supply circuit arrangement comprises a protection circuit for shutting off the power supply in the event of an abnormality in the power supply.

7. The power supply circuit structure according to claim 1, wherein the power supply circuit structure includes a rectifier circuit, the main control circuit includes a control unit, the rectifier circuit is connected between the control unit and the power supply, and the rectifier circuit receives the alternating current signal and outputs a direct current signal having a preset amplitude to supply power to the control unit.

8. The power supply circuit arrangement of claim 1, wherein said power supply circuit arrangement includes a monitoring circuit for monitoring an amplitude of said alternating current signal, said main control circuit receiving said amplitude and adjusting said control signal.

9. The power supply circuit structure according to claim 1, wherein when the number of the radiation sources is plural, the plural radiation sources are connected in series or in parallel.

10. The power supply circuit structure of claim 1, wherein the power supply circuit structure includes an output rectifying unit and an output filtering unit, the output rectifying unit is connected to the output filtering unit, the output rectifying unit is configured to rectify the output signal to obtain an output rectified signal, the output filtering unit is configured to filter the output rectified signal to obtain an output filtered signal, and when the power of the output filtered signal does not satisfy a preset condition, the main control circuit is configured to adjust the control signal so that the power of the output filtered signal obtained after adjustment satisfies the preset condition.

11. The power supply circuit structure of claim 1, wherein the light within the predetermined frequency band is infrared light.

12. The power supply circuit arrangement of claim 1, wherein said main control circuit includes a zero-crossing detection circuit configured to form a zero-crossing detection signal based on a zero-crossing time of said ac electrical signal when said ac electrical signal is applied thereto, said main control circuit receiving said zero-crossing detection signal and determining a zero-crossing time of said control signal based on said zero-crossing detection signal.

13. The power supply circuit arrangement of claim 12, wherein the main control circuit comprises:

the control unit is connected with the zero-crossing detection circuit and is used for generating a power control signal according to the amplitude of the alternating current signal, the preset frequency band and the zero-crossing detection signal;

and the random phase circuit is connected between the control unit and the signal conduction circuit and is used for generating the control signal according to the power control signal and determining the zero-crossing time of the control signal according to the zero-crossing detection signal.

14. Drying apparatus, characterized in that it comprises:

a housing;

one or more radiation sources;

the power supply circuit arrangement of any one of claims 1-13, said radiation source and said power supply circuit arrangement being disposed within said housing, said radiation source being connectable to said power supply circuit arrangement.

15. A power kit, comprising:

a drying apparatus comprising one or more radiation sources;

a power supply device comprising the power supply circuit configuration of any one of claims 1-13;

the drying device is detachably mounted on the power supply device, and a conductive assembly used for conducting the power supply circuit structure and the radiation source is arranged at the joint of the drying device and the power supply device.

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