阅读说明：本技术 净化设备输出功率的控制方法及控制装置、空气净化设备 (Control method and control device for output power of purification equipment and air purification equipment ) 是由 刘鹏宇 胡逢亮 陈颜钱 张秋俊 欧泽 于 2020-12-11 设计创作，主要内容包括：本发明公开了一种净化设备输出功率的控制方法及控制装置、空气净化设备。其中,该方法包括：确定空气净化设备中目标负载在当前时刻所处的负载功率阶段,其中,不同负载功率阶段之间的输出功率的变化趋势不同；在负载功率阶段为目标功率阶段时,获取目标负载的负载电流值；基于负载电流值所处的电流区间,控制设备预设电路的功率档位,以调整空气净化设备输出功率的下降速度。本发明解决了相关技术中集尘组件在灰尘增多或有异物时产生微打火,导致臭氧显著增加甚至超标的技术问题。(The invention discloses a control method and a control device for output power of purification equipment and air purification equipment. Wherein, the method comprises the following steps: determining a load power stage of a target load in the air purification equipment at the current moment, wherein the variation trend of the output power is different between different load power stages; when the load power stage is a target power stage, acquiring a load current value of a target load; and controlling the power gear of a preset circuit of the equipment based on the current interval of the load current value so as to adjust the reduction speed of the output power of the air purification equipment. The invention solves the technical problem that the dust collecting component in the related technology generates micro-ignition when dust is increased or foreign matters exist, so that ozone is obviously increased or even exceeds the standard.)

1. A method of controlling output power of a purifying apparatus, comprising:

determining a load power stage of a target load in the air purification equipment at the current moment, wherein the variation trend of the output power is different between different load power stages;

when the load power stage is a target power stage, acquiring a load current value of the target load;

and controlling a power gear of a preset circuit of the equipment based on the current interval of the load current value so as to adjust the reduction speed of the output power of the air purification equipment.

2. The control method according to claim 1, wherein the step of determining the load power phase of the target load in the air cleaning apparatus at the current time comprises:

acquiring a power supply voltage value of the air purification equipment;

and if the power supply voltage value is in a first voltage interval, determining that the load power stage of the target load at the current moment is a first stage.

3. The control method according to claim 2, wherein the step of determining the load power phase at which the target load is located at the current time in the air cleaning apparatus comprises:

if the power supply voltage value is in a second voltage interval, detecting a current change parameter and a power change parameter of the target load within a preset time period, wherein the voltage value of the second voltage interval is higher than that of the first voltage interval;

and if the current change parameter and the power change parameter are both positive numbers, determining that the load power stage of the target load at the current moment is a second stage.

4. The control method according to claim 3, wherein the step of determining the load power phase of the target load in the air cleaning apparatus at the current time comprises:

and if the power supply voltage value starts to decrease from the maximum voltage threshold value and the output current value of the target load continuously increases, determining that the load power stage of the target load at the current moment is the third stage.

5. The control method according to claim 4, wherein the step of determining the load power phase of the target load in the air cleaning apparatus at the current time comprises:

if the power supply voltage value is in a third voltage interval, acquiring the duty ratio of a circuit MOS tube of the target load at the current moment and the output current value;

and if the duty ratio of the MOS tube of the circuit is equal to a preset duty ratio threshold value and the output current value is equal to a maximum current threshold value, determining that the load power stage enters a target power stage.

6. The control method according to claim 5, wherein the first phase is an idle phase, the second phase is a power increasing phase, and the third phase is a constant power phase; the target power phase is a power down phase.

7. The control method according to claim 1, wherein the step of controlling the device to preset the power level of the circuit based on the current interval in which the load current value is located comprises:

if the load current value exceeds a preset current interval, reducing the power gear of the duty ratio of the MOS tube of the circuit;

if the load current value is lower than a preset current interval, detecting the duration lower than the current interval;

and if the duration time lower than the current interval reaches a preset time threshold, increasing the power gear of the duty ratio of the MOS tube of the circuit.

8. The control method according to claim 1, wherein before determining the load power phase in the air cleaning apparatus at which the target load is at the present time, the control method further comprises:

determining a target load to be detected in the air purification equipment;

and carrying out self-checking operation on the power supply of the air purification equipment to obtain a self-checking result, wherein the self-checking result is used for indicating whether the state of the power supply is normal or not.

9. The control method according to any one of claims 1 to 8, wherein the target load is a dust collection assembly of the air purifier.

10. A control apparatus for output power of a purifying device, comprising:

the determining unit is used for determining the load power stage of the target load in the air purifying equipment at the current moment, wherein the variation trend of the output power is different between different load power stages;

the obtaining unit is used for obtaining the load current value of the target load when the load power stage is a target power stage;

and the control unit is used for controlling the power gear of a preset circuit of the equipment based on the current interval where the load current value is located so as to adjust the reduction speed of the output power of the air purification equipment.

11. An air purification apparatus, comprising:

a processor; and

a memory for storing executable instructions of the processor;

wherein the processor is configured to perform the method of controlling the output power of the purge device of any of claims 1 to 9 via execution of the executable instructions.

12. A computer-readable storage medium, comprising a stored computer program, wherein the computer program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform the method for controlling output power of a purification apparatus according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of equipment control, in particular to a control method and a control device for output power of purifying equipment and air purifying equipment.

Background

In the related art, the electrostatic air cleaner on the market has a core unit, namely an ionizer, and a control method thereof includes a voltage feedback method, a feedback-free method, and some of the electrostatic air cleaners are provided with an overcurrent protection unit, an overtemperature protection unit and the like. The high-voltage power supply control mode of the electrostatic air purifier is one of the core technologies. The load characteristics of the dust collecting component of the electrostatic purifier can change along with the increase of dust collection, the change of humidity and other environmental factors. For example, under the same voltage of 7.5KV, the ozone of a brand-new dust collecting component is very low, and the sterilization and dust removal performance is very good; when the purification assembly is full of dust after one month of dust collection, a serious ignition may be generated by a voltage of 7.5KV, the ozone generation rate is greatly increased, and the dust removal performance is remarkably reduced. Therefore, a proper control of the high voltage power supply is necessary and critical. If the control is not proper, the dust collecting component generates micro-ignition when dust is increased or foreign matters exist, so that the ozone is obviously increased and even exceeds the national standard; if the control is too dead, the performance is not optimal.

In view of the above problems, no effective solution has been proposed.

Disclosure of Invention

The embodiment of the invention provides a control method and a control device for output power of purification equipment and air purification equipment, which at least solve the technical problem that ozone is obviously increased or even exceeds the standard due to micro-ignition generated when dust is increased or foreign matters exist in a dust collection assembly in the related technology.

According to an aspect of an embodiment of the present invention, there is provided a control method of output power of a purifying apparatus, including: determining a load power stage of a target load in the air purification equipment at the current moment, wherein the variation trend of the output power is different between different load power stages; when the load power stage is a target power stage, acquiring a load current value of the target load; and controlling a power gear of a preset circuit of the equipment based on the current interval of the load current value so as to adjust the reduction speed of the output power of the air purification equipment.

Optionally, the step of determining the load power phase of the target load in the air purification apparatus at the current time includes: acquiring a power supply voltage value of the air purification equipment; and if the power supply voltage value is in a first voltage interval, determining that the load power stage of the target load at the current moment is a first stage.

Optionally, the step of determining the load power phase of the target load in the air purification apparatus at the current time includes: if the power supply voltage value is in a second voltage interval, detecting a current change parameter and a power change parameter of the target load within a preset time period, wherein the voltage value of the second voltage interval is higher than that of the first voltage interval; and if the current change parameter and the power change parameter are both positive numbers, determining that the load power stage of the target load at the current moment is a second stage.

Optionally, the step of determining the load power phase of the target load in the air purification apparatus at the current time includes: and if the power supply voltage value starts to decrease from the maximum voltage threshold value and the output current value of the target load continuously increases, determining that the load power stage of the target load at the current moment is the third stage.

Optionally, the step of determining the load power phase of the target load in the air purification apparatus at the current time includes: if the power supply voltage value is in a third voltage interval, acquiring the duty ratio of a circuit MOS tube of the target load at the current moment and the output current value; and if the duty ratio of the MOS tube of the circuit is equal to a preset duty ratio threshold value and the output current value is equal to a maximum current threshold value, determining that the load power stage enters a target power stage.

Optionally, the first stage is an idle stage, the second stage is a power increasing stage, and the third stage is a constant power stage; the target power phase is a power down phase.

Optionally, the step of controlling, based on the current interval in which the load current value is located, a power stage of a preset circuit of the device includes: if the load current value exceeds a preset current interval, reducing the power gear of the duty ratio of the MOS tube of the circuit; if the load current value is lower than a preset current interval, detecting the duration lower than the current interval; and if the duration time lower than the current interval reaches a preset time threshold, increasing the power gear of the duty ratio of the MOS tube of the circuit.

Optionally, before determining the load power stage of the target load in the air purification apparatus at the current time, the control method further includes: determining a target load to be detected in the air purification equipment; and carrying out self-checking operation on the power supply of the air purification equipment to obtain a self-checking result, wherein the self-checking result is used for indicating whether the state of the power supply is normal or not.

Optionally, the target load is a dust collection assembly of the air purifier.

According to another aspect of the embodiments of the present invention, there is also provided a control apparatus for output power of a purifying device, including: the determining unit is used for determining the load power stage of the target load in the air purifying equipment at the current moment, wherein the variation trend of the output power is different between different load power stages; the obtaining unit is used for obtaining the load current value of the target load when the load power stage is a target power stage; and the control unit is used for controlling the power gear of a preset circuit of the equipment based on the current interval where the load current value is located so as to adjust the reduction speed of the output power of the air purification equipment.

Optionally, the determining unit includes: the first acquisition module is used for acquiring a power supply voltage value of the air purification equipment; and the first determining module is used for determining that the load power stage of the target load at the current moment is a first stage when the power supply voltage value is in a first voltage interval.

Optionally, the determining unit further includes: the first detection module is used for detecting a current change parameter and a power change parameter of the target load within a preset time period when the voltage value of the power supply is in a second voltage interval, wherein the voltage value of the second voltage interval is higher than that of the first voltage interval; and the second determining module is used for determining the load power stage of the target load at the current moment as a second stage when the current change parameter and the power change parameter are both positive numbers.

Optionally, the determining unit further includes: and the third determining module is used for determining the load power stage of the target load at the current moment as a third stage when the power supply voltage value starts to decrease from the maximum voltage threshold value and the output current value of the target load continuously increases.

Optionally, the determining unit further includes: the second obtaining module is used for obtaining the duty ratio and the output current value of the circuit MOS tube of the target load at the current moment when the power supply voltage value is in a third voltage interval; and the fourth determining module is used for determining that the load power stage enters a target power stage when the duty ratio of the MOS tube of the circuit is equal to a preset duty ratio threshold value and the output current value is equal to a maximum current threshold value.

Optionally, the first stage is an idle stage, the second stage is a power increasing stage, and the third stage is a constant power stage; the target power phase is a power down phase.

Optionally, the control unit comprises: the first reduction module is used for reducing the power gear of the duty ratio of the MOS tube of the circuit when the load current value exceeds a preset current interval; the first detection module is used for detecting the duration of the current interval when the load current value is lower than the preset current interval; the first increasing module is used for increasing the power gear of the duty ratio of the MOS tube of the circuit when the duration time lower than the current interval reaches a preset time threshold.

Optionally, the control device for output power of the purification apparatus further comprises: the fifth determining module is used for determining the target load to be detected in the air purification equipment before determining the load power stage of the target load in the air purification equipment at the current moment; the detection module is used for carrying out self-checking operation on the power supply of the air purification equipment to obtain a self-checking result, wherein the self-checking result is used for indicating whether the state of the power supply is normal or not.

Optionally, the target load is a dust collection assembly of the air purifier.

According to another aspect of the embodiments of the present invention, there is also provided an air purifying apparatus including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the method of controlling output power of a purification apparatus of any one of the above via execution of the executable instructions.

According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, which includes a stored computer program, wherein when the computer program runs, the apparatus where the computer-readable storage medium is located is controlled to execute the control method for output power of the purification apparatus according to any one of the above.

In the embodiment of the invention, the load power stage of the target load in the air purification equipment at the current moment is determined, wherein the variation trends of the output power between different load power stages are different; when the load power stage is a target power stage, acquiring a load current value of a target load; and controlling the power gear of a preset circuit of the equipment based on the current interval of the load current value so as to adjust the reduction speed of the output power of the air purification equipment. In the embodiment, the current output in the equipment circuit can be controlled by detecting the load current according to the voltage and current change characteristics of each power stage, so that the abnormal work of the high-voltage generator is prevented, and the rapid increase of ozone is avoided, thereby solving the technical problem that the dust collecting component in the related art generates micro-ignition when dust is increased or foreign matters exist, so that the ozone is obviously increased or even exceeds the standard.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a flow chart of an alternative method of controlling output power of a purge device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an alternative load power curve according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an alternative control arrangement for output power of a purification apparatus, in accordance with an embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example one

In accordance with an embodiment of the present invention, there is provided an embodiment of a method for controlling output power of a purifying device, wherein the steps illustrated in the flowchart of the figure may be performed in a computer system, such as a set of computer executable instructions, and wherein, although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order different than that illustrated.

FIG. 1 is a flow chart of an alternative method of controlling the output power of a purification apparatus, as shown in FIG. 1, according to an embodiment of the present invention, comprising the steps of:

step S102, determining a load power stage of a target load in the air purification equipment at the current moment, wherein the variation trends of output power among different load power stages are different;

step S104, when the load power stage is the target power stage, acquiring the load current value of the target load;

and S106, controlling the power gear of a preset circuit of the equipment based on the current interval of the load current value so as to adjust the reduction speed of the output power of the air purification equipment.

Through the steps, the load power stage of the target load in the air purification equipment at the current moment can be determined, wherein the variation trend of the output power is different between different load power stages; when the load power stage is a target power stage, acquiring a load current value of a target load; and controlling the power gear of a preset circuit of the equipment based on the current interval of the load current value so as to adjust the reduction speed of the output power of the air purification equipment. In the embodiment, the current output in the equipment circuit can be controlled by detecting the load current according to the voltage and current change characteristics of each power stage, so that the abnormal work of the high-voltage generator is prevented, and the rapid increase of ozone is avoided, thereby solving the technical problem that the dust collecting component in the related art generates micro-ignition when dust is increased or foreign matters exist, so that the ozone is obviously increased or even exceeds the standard.

The embodiment of the invention can be applied to various air purification devices, including: air sanitizers, electrostatic air cleaners, and the like, which may include, but are not limited to: the device comprises an ion generator, a dust collection assembly, an overcurrent protection unit, an overtemperature protection unit and a PM2.5 sensor. The current output is controlled by detecting the voltage and the current, thereby preventing the abnormal work of the high-voltage generator and avoiding the sharp increase of ozone.

The target load related to the embodiment of the invention can be a dust collecting component of the air purifier.

The present invention will be described in detail with reference to the above steps.

Optionally, before determining the load power stage of the target load in the air purification apparatus at the current time, the control method includes: determining a target load to be detected in the air purification equipment; and carrying out self-checking operation on the power supply of the air purification equipment to obtain a self-checking result, wherein the self-checking result is used for indicating whether the state of the power supply is normal.

In the embodiment of the invention, when a power supply is connected to a brand-new polar plate for the first time, namely when a new air purification device is determined to be connected, the power supply can carry out self-detection firstly, and under the corresponding load condition, the working voltage of the load is fed back through the voltage, and the current of the load is monitored through the current detection circuit.

Step S102, determining a load power stage of a target load in the air purification equipment at the current moment, wherein the variation trend of the output power is different between different load power stages.

Fig. 2 is a schematic diagram of an alternative load power curve according to an embodiment of the present invention, as shown in fig. 2, although the output power of the load power curve gradually increases, the output power curve includes: the device comprises an idle load stage, a power increasing region stage, a constant power region stage, a power reducing region stage and an overload stage.

The meaning of each section of the load characteristic output power of the purification and dust collection component comprises the following steps:

1) and (3) no-load stage: almost no current is output, and the power supply is in a power output state close to 0;

2) a power increasing area stage: in this stage, the output high voltage (for example, 8KV) is kept stable, and as the load gradually increases to the rated load, the current increases and the power gradually increases;

3) a constant power area stage: the output power is kept constant at this stage, the output high voltage is gradually reduced from 8KV along with the increase of the load, and the current is continuously increased;

4) a power reduction area stage: at the moment, the load of the high-voltage power supply is greatly higher than the rated load, and power reduction treatment is needed to inhibit the increase of the ozone generation rate; in the embodiment of the invention, the power reduction area is mainly aimed at, and in order to inhibit the increase of the ozone generation rate at the stage, the power reduction treatment is realized;

5) and (3) overload stage: and when the load is overlarge, the power supply enters a protection state.

According to the description of the characteristics of each section of the power curve, the control of the power reduction area stage is particularly important, and the generation of ozone can be effectively inhibited.

Optionally, the step of determining the load power phase of the target load in the air purification apparatus at the current time includes: acquiring a power supply voltage value of the air purification equipment; and if the power supply voltage value is in the first voltage interval, determining the load power stage of the target load at the current moment as a first stage.

Alternatively, the step of determining the load power stage of the target load in the air purification device at the current time includes: if the power supply voltage value is in a second voltage interval, detecting a current change parameter and a power change parameter of the target load within a preset time period, wherein the voltage value of the second voltage interval is higher than the voltage value of the first voltage interval; and if the current change parameter and the power change parameter are both positive numbers, determining that the load power stage of the target load at the current moment is the second stage.

Optionally, the step of determining the load power phase of the target load in the air purification apparatus at the current time includes: and if the power supply voltage value starts to decrease from the maximum voltage threshold value and the output current value of the target load continuously increases, determining that the load power stage of the target load at the current moment is the third stage.

Optionally, the step of determining the load power phase of the target load in the air purification apparatus at the current time includes: if the power supply voltage value is in a third voltage interval, acquiring the duty ratio of a circuit MOS tube of the target load at the current moment and the output current value; and if the duty ratio of the MOS tube of the circuit is equal to the preset duty ratio threshold value and the output current value is equal to the maximum current threshold value, determining that the load power stage enters a target power stage.

In the embodiment of the invention, the first stage is an idle load stage, the second stage is a power increasing stage, and the third stage is a constant power stage; the target power phase is a power down phase.

And step S104, when the load power stage is the target power stage, acquiring the load current value of the target load.

In the embodiment of the invention, when the high-voltage electrode and the collector of the purifying equipment reach rated voltage and normally run, the control chip records the duty ratio Ds of the MOS tube of the high-voltage generating circuit and the real-time load current I at the moment_PROThese two values are recorded as nominal values; when the load is increased continuously, the current is increased continuously, but the unlimited increase cannot be realized (the ozone generation rate is greatly increased due to the excessive current), so that a maximum current value I needs to be preset_MAX。

The above duty ratio Ds and the current I_PRO、I_MAXThe data can be recorded in a read-only memory of a chip or a special memory chip, so that the data is not lost when the power is off and is read out after the power is on.

When the power supply maintains stable output high voltage (for example, 8KV), the duty ratio is equal to Ds and the output current is equal to IMAX, the power supply enters a power reduction area at the moment, current change needs to be monitored in real time in the power reduction stage, and the real-time current I and the real-time duty ratio D are obtained.

And S106, controlling the power gear of a preset circuit of the equipment based on the current interval of the load current value so as to adjust the reduction speed of the output power of the air purification equipment.

In the embodiment of the invention, a corresponding lookup table is set for the power gear, the duty ratio D and the current value, and the lookup table is shown as the following table 1:

TABLE 1 Power Shift Table for devices

Optionally, the step of controlling the device to preset the power stage of the circuit based on the current interval where the load current value is located includes: if the load current value exceeds a preset current interval, reducing the power gear of the duty ratio of the MOS tube of the circuit; if the load current value is lower than the preset current interval, detecting the duration time lower than the current interval; and if the duration time lower than the current interval reaches a preset time threshold, increasing the power gear of the duty ratio of the MOS tube of the circuit.

For example, after the table is queried, if the real-time current I is greater than Idrop, the drive duty ratio D is decreased by one power step; and if the real-time current I is less than Irise, the current state lasts for 300s, and the power does not reach the maximum power ratio, the driving ratio D is increased by one power gear.

Through the embodiment, the equipment control method is provided aiming at the voltage and current change characteristics of the power reduction area, the current output is controlled through the detection of the voltage and the current, the abnormal work of the high-voltage generator is prevented, the rapid increase of ozone is avoided, the gradual reduction of the output power can be effectively controlled, and the generation of the ozone is reduced.

Example two

The invention is described below in connection with an alternative embodiment.

Fig. 3 is a schematic diagram of an alternative control device for output power of a purification apparatus according to an embodiment of the present invention, and as shown in fig. 3, the control device may include: a determination unit 31, an acquisition unit 33, a control unit 35, wherein,

a determining unit 31, configured to determine a load power phase in which a target load in the air purification apparatus is located at a current time, where a variation trend of the output power is different between different load power phases;

an obtaining unit 33, configured to obtain a load current value of the target load when the load power phase is the target power phase;

and the control unit 35 is configured to control a power stage of the preset circuit of the device based on the current interval where the load current value is located, so as to adjust a decreasing speed of the output power of the air purification device.

The control device for the output power of the purification equipment can determine the load power stage of the target load in the air purification equipment at the current moment through the determination unit 31, wherein the variation trends of the output power between different load power stages are different, and the load current value of the target load is obtained through the obtaining unit 33 when the load power stage is the target power stage; the control unit 35 controls the power gear of the preset circuit of the device based on the current interval where the load current value is located, so as to adjust the reduction speed of the output power of the air purification device. In the embodiment, the current output in the equipment circuit can be controlled by detecting the load current according to the voltage and current change characteristics of each power stage, so that the abnormal work of the high-voltage generator is prevented, and the rapid increase of ozone is avoided, thereby solving the technical problem that the dust collecting component in the related art generates micro-ignition when dust is increased or foreign matters exist, so that the ozone is obviously increased or even exceeds the standard.

Optionally, the determining unit includes: the first acquisition module is used for acquiring a power supply voltage value of the air purification equipment; the first determining module is used for determining that the load power stage of the target load at the current moment is a first stage when the power supply voltage value is in a first voltage interval.

Alternatively, the determining unit further includes: the first detection module is used for detecting a current change parameter and a power change parameter of the target load in a preset time period when the voltage value of the power supply is in a second voltage interval, wherein the voltage value of the second voltage interval is higher than the voltage value of the first voltage interval; and the second determining module is used for determining the load power stage of the target load at the current moment as a second stage when the current change parameter and the power change parameter are both positive numbers.

Optionally, the determining unit further includes: and the third determining module is used for determining the load power stage of the target load at the current moment as a third stage when the voltage value of the power supply starts to decrease from the maximum voltage threshold and the output current value of the target load continuously increases.

In an embodiment of the present invention, the determining unit further includes: the second acquisition module is used for acquiring the duty ratio and the output current value of the circuit MOS tube of the target load at the current moment when the power supply voltage value is in a third voltage interval; and the fourth determining module is used for determining that the load power stage enters the target power stage when the duty ratio of the MOS tube of the circuit is equal to the preset duty ratio threshold value and the output current value is equal to the maximum current threshold value.

Optionally, the first stage is an idle load stage, the second stage is a power increasing stage, and the third stage is a constant power stage; the target power phase is a power down phase.

Optionally, the control unit includes: the first reduction module is used for reducing the power gear of the duty ratio of the MOS tube of the circuit when the load current value exceeds a preset current interval; the first detection module is used for detecting the duration time below the current interval when the load current value is lower than the preset current interval; the first increasing module is used for increasing the power gear of the duty ratio of the MOS tube of the circuit when the duration time lower than the current interval reaches a preset time threshold.

Optionally, the control device for output power of the purifying apparatus further includes: the fifth determining module is used for determining the target load to be detected in the air purification equipment before determining the load power stage of the target load in the air purification equipment at the current moment; the detection module is used for carrying out self-checking operation on the power supply of the air purification equipment to obtain a self-checking result, wherein the self-checking result is used for indicating whether the state of the power supply is normal or not.

Optionally, the target load is a dust collection assembly of the air purifier.

The control device for the output power of the purification apparatus may further include a processor and a memory, and the determining unit 31, the obtaining unit 33, the control unit 35, and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to implement corresponding functions.

The processor comprises a kernel, and the kernel calls a corresponding program unit from the memory. The kernel can be set to be one or more, and the power gear of the equipment preset circuit is controlled based on the current interval where the load current value is located by adjusting the kernel parameters so as to adjust the descending speed of the output power of the air purification equipment.

The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.

According to another aspect of the embodiments of the present invention, there is also provided an air purifying apparatus including: a processor; and a memory for storing executable instructions for the processor; wherein the processor is configured to perform the method of controlling the output power of the purge device of any of the above via execution of the executable instructions.

According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, which includes a stored computer program, wherein when the computer program runs, the apparatus where the computer-readable storage medium is located is controlled to execute the control method for output power of the purification apparatus according to any one of the above.

The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device: determining a load power stage of a target load in the air purification equipment at the current moment, wherein the variation trend of the output power is different between different load power stages; when the load power stage is a target power stage, acquiring a load current value of a target load; and controlling the power gear of a preset circuit of the equipment based on the current interval of the load current value so as to adjust the reduction speed of the output power of the air purification equipment.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.