Power supply circuit and air conditioning equipment

Abstract

The utility model relates to a power supply circuit and air conditioning equipment. The power supply circuit comprises a detection module used for detecting electrical information of the air conditioning equipment, and the electrical information is used for reflecting the working state of the air conditioning equipment; the switch module is electrically connected between a filter screen of the air conditioning equipment and the power supply, and the switch module is used for connecting or disconnecting the filter screen and the power supply; the control module is electrically connected with the detection module and the switch module, and the control module is used for controlling the switch module according to the electrical information so as to conduct the filter screen and the power supply or cut off the electrical connection between the filter screen and the power supply. The detection module can detect the working state of the air conditioning equipment, and the control module controls the switch-on or switch-off of the switch module when the working state of the air conditioning equipment is changed, so that the working state of the filter screen is consistent with that of the air conditioning equipment, and the power consumption of the filter screen is reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of power supply, and in particular to a power supply circuit and an air conditioning device. BACKGROUND

[0002] With the rapid development of science and technology, air conditioning devices can adjust indoor temperature and humidity to improve user comfort. The filter screen in the air conditioning device adsorbs particulate matter such as dust and bacteria through high-voltage static electricity, which can effectively filter pollutants in the air, thereby providing a healthier and more comfortable indoor environment for users. SUMMARY

[0003] To overcome the problems in the related art, the present disclosure provides a power supply circuit and an air conditioning device.

[0004] According to a first aspect of the present disclosure, a power supply circuit is provided, comprising:

[0005] a detection module configured to detect electrical information of an air conditioning device, the electrical information being used to reflect a working state of the air conditioning device;

[0006] a switch module electrically connected between a filter screen of the air conditioning device and a power supply, the switch module being configured to turn on or turn off the filter screen and the power supply;

[0007] a control module electrically connected to the detection module and the switch module, the control module being configured to control the switch module to turn on the filter screen and the power supply or to turn off the electrical connection between the filter screen and the power supply according to the electrical information.

[0008] In this embodiment, since the detection module can detect the working state of the air conditioning device, the control module controls the switch module to turn on or turn off when the working state of the air conditioning device changes, so that the filter screen is consistent with the working state of the air conditioning device, thereby reducing the power consumption of the filter screen.

[0009] In some embodiments of the present disclosure, the detection module comprises:

[0010] a current detection component electrically connected between the power supply and the air conditioning device and electrically connected to the control module, the current detection component being configured to detect the current of the air conditioning device as the electrical information.

[0011] In this embodiment, the control module controls the working state of the filter screen according to the current detected by the current detection component, so that the filter screen can be turned on and off synchronously with the air conditioning device, thereby improving the reliability of the filter screen control.

[0012] In some embodiments of the present disclosure, the detection module is configured to detect electrical information between the power supply and the air conditioning device.

[0013] In the present embodiment, the electrical information between the power supply and the air conditioning device is detected by the detection module, thereby improving the reliability of the detection module.

[0014] In some embodiments of the present disclosure, the current detection assembly comprises a Hall sensor.

[0015] In the present embodiment, the Hall sensor can realize non-contact current detection by using magnetic field induction, thereby avoiding mutual interference between strong current and weak current, and improving the reliability of the power supply circuit.

[0016] In some embodiments of the present disclosure, the current detection assembly further comprises:

[0017] a conversion unit, which is electrically connected to the Hall sensor and the control module, and is configured to convert the current detected by the Hall sensor into voltage and transmit the voltage to the control module.

[0018] In the present embodiment, the control module cannot directly read the current, and the conversion unit converts the current detected by the Hall sensor into voltage, so that the control module can control the working state of the filter screen according to the voltage, thereby improving the reliability of the filter screen control.

[0019] In some embodiments of the present disclosure, the control module is configured to control the switch module according to the current and a preset threshold.

[0020] In the present embodiment, the working state of the air conditioning device is determined according to the relationship between the current and the preset threshold to control whether the filter screen operates, thereby improving the reliability of the control module.

[0021] In some embodiments of the present disclosure, the detection module comprises:

[0022] a voltage detection assembly, which is electrically connected between the air conditioning device and a ground end, and is configured to detect the voltage of the air conditioning device as the electrical information.

[0023] In the present embodiment, the control module controls the working state of the filter screen according to the voltage detected by the voltage detection assembly, so that the filter screen can be opened and closed synchronously with the air conditioning device, thereby improving the reliability of the filter screen control.

[0024] In the embodiment, the power supply voltage and the power supply current of the filter screen are relatively high, and the thyristor can withstand high voltage and current, so that the reliability of the power supply circuit is improved by using the thyristor as the switching module.

[0025] In some embodiments of the present disclosure, the switching module is integrated in the filter screen.

[0026] In the embodiment, the switching module is integrated in the filter screen, so that an additional switching module is not needed to turn on and off the filter screen and the power supply, thereby reducing the complexity of the power supply circuit structure.

[0027] In some embodiments of the present disclosure, the power supply is used to supply power to the air conditioning device and the control module.

[0028] In the embodiment, the power supply is used to supply power to the air conditioning device and the control module, thereby reducing the complexity of the power supply circuit and the complexity of the power supply circuit structure.

[0029] In some embodiments of the present disclosure, the power supply circuit further comprises:

[0030] The first protection module is electrically connected between the power supply, the air conditioning device and the control module, and is used to protect the control module and the air conditioning device.

[0031] The second protection module is electrically connected between the first protection module and the control module, and is used to protect the control module. In the embodiment, the first protection module can protect the air conditioning device and the control module, and the second protection module can further protect the control module, thereby improving the reliability of the power supply circuit.

[0032] In some embodiments of the present disclosure, the first protection module comprises at least one of:

[0033] The overcurrent protection component has a first end electrically connected to the power supply, a second end electrically connected to the air conditioning device and the control module, and is used to protect the air conditioning device and the control module from overcurrent.

[0034] The surge protection component is electrically connected between the overcurrent protection component, the air conditioning device and the control module.

[0035] In the embodiment, when the load of the air conditioning device is abnormal, the control module is abnormal or the power supply is abnormal, the surge protection component and the overcurrent protection component can protect the air conditioning device and the control module from damage, thereby improving the reliability of the power supply circuit.

[0036] In some embodiments of the present disclosure, the second protection module comprises at least one of:

[0037] A backflow prevention component is electrically connected between the first protection module and the control module, and is configured to prevent current from flowing back from the control module to the first protection module.

[0038] A current limiting component is electrically connected between the first protection module and the control module, and is configured to limit the current flowing from the first protection module to the control module.

[0039] A voltage stabilizing component has a first end electrically connected between the first protection module and the control module, and a second end configured to be electrically connected to a ground terminal, and is configured to stabilize the voltage output from the first protection module to the control module.

[0040] A filtering component is electrically connected between the first protection module and the control module, and is configured to filter the voltage and / or current output from the first protection module to the control module.

[0041] In the present embodiment, by providing the backflow prevention component, the current limiting component, the voltage stabilizing component and the filtering component, the first protection module can transmit appropriate and stable current to the control module in one direction, thereby improving the reliability of the power supply circuit.

[0042] According to a second aspect of the present disclosure, there is provided an air conditioning device comprising the power supply circuit as described above.

[0043] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects:

[0044] The power supply circuit comprises a detection module, a switching module and a control module, the switching module is electrically connected between a filter screen of the air conditioning device and a power supply, and the control module is electrically connected to the detection module and the switching module. Since the detection module can detect the working state of the air conditioning device, the control module controls the switching module to be turned on or turned off when the working state of the air conditioning device changes, so that the filter screen is consistent with the working state of the air conditioning device, thereby reducing the power consumption of the filter screen.

[0045] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0046] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments that are consistent with the present application, and together with the description, serve to explain the principles of the present application.

[0047] Figure 1 is a structural schematic diagram of a power supply circuit provided by an example embodiment of the present disclosure;

[0048] Figure 2 is a structural schematic diagram of a power supply circuit provided by another example embodiment of the present disclosure;

[0049] Figure 3 is a structural schematic diagram of a power supply circuit provided by another example embodiment of the present disclosure;

[0050] Figure 4 is a structural schematic diagram of a power supply circuit provided by another example embodiment of the present disclosure;

[0051] Figure 5 is a structural schematic diagram of a power supply circuit provided by another example embodiment of the present disclosure;

[0052] Figure 6 is a system block diagram of an air conditioning device provided by an example embodiment of the present disclosure.

[0053] In the drawings:

[0054] 1 - electrostatic filter; 2 - power frequency AC power supply; 10 - detection module; 11 - Hall sensor; 20 - switch module; 30 - control module; 40 - filter; 50 - power supply; 60 - first protection module; 61 - overcurrent protection component; 62 - surge protection component; 70 - second protection module; 71 - anti-backflow component; 72 - current limiting component; 73 - voltage stabilizing component; 74 - filtering component; 400 - air conditioning device; 402 - processing component; 404 - memory; 406 - power component; 408 - multimedia component; 410 - audio component; 412 - input / output interface; 414 - sensor component; 416 - communication component; 420 - processor; S - thyristor; D - diode; ZD - zener diode; C - capacitor; R - second resistor; GND - ground; L - hot line; N - neutral line; A - plug; B - socket; F - fuse. DETAILED DESCRIPTION

[0055] The exemplary embodiments will be described in detail below with reference to the accompanying drawings. In the following description, unless otherwise indicated, like numbers refer to like elements throughout the different drawings. The following description of exemplary embodiments is not representative of all possible embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims. It should also be understood that the term "and / or" as used herein refers to any or all possible combinations of one or more of the associated listed items.

[0056] With the rapid development of technology, air conditioning equipment can adjust indoor temperature and humidity to improve user comfort. The filter screen in the air conditioning equipment adsorbs particulate matter such as dust and bacteria through high-voltage electrostatic adsorption, which can effectively filter pollutants in the air, thereby providing a healthier and more comfortable indoor environment for users. The filter screen includes an ionization zone and a dust collection zone. The ionization zone charges the particulate matter such as dust and bacteria in the air through high voltage, and the dust collection zone adsorbs the charged particulate matter through a metal plate with opposite charges to filter the air. Moreover, since the filter screen does not need to be replaced, the maintenance cost of the air conditioning equipment is reduced.

[0057] An example embodiment of the present disclosure provides an air conditioning equipment, as shown in Figure 1 The air conditioning equipment includes an electrostatic filter screen 1, which is electrically connected to a power frequency alternating power supply 2. The power frequency alternating power supply 2 supplies power to both the load of the air conditioning equipment and the electrostatic filter screen 1. However, since the electrostatic filter screen operates immediately after being powered, and the air conditioning equipment is frequently started and stopped according to the indoor temperature and / or user settings, the electrostatic filter screen and the air conditioning equipment lack effective synchronization control, which can increase power consumption. For example, when the air conditioning equipment switches from a running state to a standby state or a shutdown state (hereinafter referred to as a stopped running state), if the electrostatic filter screen continues to run, it will increase power consumption.

[0058] An example embodiment of the present disclosure provides a power supply circuit, as shown in Figure 2 The power supply circuit includes a detection module 10, a switching module 20, and a control module 30. The detection module 10 is configured to detect electrical information of the air conditioning equipment, and the electrical information is used to reflect the working state of the air conditioning equipment. The switching module 20 is electrically connected between the filter screen 40 of the air conditioning equipment and the power supply 50, and is configured to make the filter screen 40 and the power supply 50 conductive or disconnected. The control module 30 is electrically connected to the detection module 10 and the switching module 20, and is configured to control the switching module 20 according to the electrical information to make the filter screen 40 and the power supply 50 conductive or disconnected.

[0059] In the embodiment, the power supply circuit comprises a detection module, a switching module and a control module, the switching module is electrically connected between the filter screen and the power supply of the air conditioning device, and the control module is electrically connected with the detection module and the switching module. Since the detection module can detect the working state of the air conditioning device, the control module controls the switching module to be turned on or turned off when the working state of the air conditioning device changes, so that the filter screen is consistent with the working state of the air conditioning device, thereby reducing the power consumption of the filter screen.

[0060] Exemplarily, the control module 30 can comprise a microcontroller unit (MCU) and its peripheral circuit of the air conditioning device, can also comprise a separately arranged microcontroller unit and its peripheral circuit, and can also comprise a circuit composed of devices such as operational amplifiers and comparators. The application protects the structural composition and connection relationship of the power supply circuit. The filter screen 40 can be an electrostatic filter screen. The power supply 50 can be a power frequency alternating current power supply for providing 220V / 50Hz alternating current.

[0061] Exemplarily, the control module 30 can be electrically connected with the display screen of the air conditioning device to display the working state of the filter screen 40 through the display screen. The control module 30 can also be electrically connected with the communication module of the air conditioning device, so that the user controls the control module 30 to turn on or turn off the filter screen 40 through an application program.

[0062] Exemplarily, when the control module 30 determines that the air conditioning device is switched from the stop running state to the running state according to the electrical information detected by the detection module 10, the control module 30 controls the switching module 20 to turn on the filter screen 40 and the power supply 50, so that the filter screen 40 and the air conditioning device are turned on at the same time. When the control module 30 determines that the air conditioning device is switched from the running state to the stop running state according to the electrical information detected by the detection module 10, the control module 30 controls the switching module 20 to turn off the filter screen 40 and the power supply 50, so that the filter screen 40 and the air conditioning device are turned off at the same time. By arranging the detection module 10, the switching module 20 and the control module 30, the control module 30 can control the switching module 20 to be turned on and turned off based on the detection result of the detection module 10, so that the filter screen 40 and the air conditioning device can be turned on and turned off at the same time, thereby reducing the power consumption of the filter screen.

[0063] Exemplarily, the air conditioning device refers to at least part of the load of the air conditioning device, including the filter screen 40, the fan, the compressor and the like, and can also include the control module 30.

[0064] In an embodiment, the detection module 10 comprises a current detection component. The current detection component is electrically connected between the power supply 50 and the air conditioning device, and is electrically connected with the control module 30. The current detection component is used to detect the current of the air conditioning device as electrical information.

[0065] In the embodiment, the current input by the power supply is small or zero when the air conditioning device is in the stop running state, and the current input by the power supply is large when the air conditioning device is in the running state. Therefore, when the working state of the air conditioning device changes, the current detected by the current detection component also changes. The control module controls the working state of the filter screen according to the current detected by the current detection component, so that the filter screen can be opened and closed synchronously with the air conditioning device, thereby improving the reliability of the filter screen control.

[0066] For example, the current detection component can be arranged on the power line of the air conditioning device, for example, can be arranged on the live wire.

[0067] In an embodiment, the detection module 10 is configured to detect the electrical information between the power supply 50 and the air conditioning device.

[0068] In the embodiment, the electrical information between the power supply and the air conditioning device is different when the air conditioning device is in the stop running state and the running state. By detecting the electrical information between the power supply and the air conditioning device through the detection module, the reliability of the detection module is improved.

[0069] In an embodiment, as shown in Figure 3 The current detection component includes a Hall sensor 11.

[0070] In the embodiment, the Hall sensor has a simple structure, and the current is detected by the Hall sensor, thereby reducing the complexity of the power supply circuit structure. Moreover, the Hall sensor can realize non-contact current detection by using magnetic field induction, thereby avoiding the mutual interference between strong current and weak current, and improving the reliability of the power supply circuit.

[0071] In an embodiment, the current detection component further includes a conversion unit. The conversion unit is electrically connected with the Hall sensor 11 and the control module 30, and is configured to convert the current detected by the Hall sensor 11 into voltage and transmit the voltage to the control module 30.

[0072] In the embodiment, the control module cannot directly read the current, and the current detected by the Hall sensor is converted into voltage by the conversion unit, so that the control module can control the working state of the filter screen according to the voltage, thereby improving the reliability of the filter screen control.

[0073] For example, the Hall sensor 11 can sample the full cycle current. The conversion unit can include a first resistor, a rectifier and a filter capacitor. One end of the first resistor is electrically connected with the third end and the ground end of the Hall sensor 11, and the other end is electrically connected with the fourth end of the Hall sensor 11 and the control module 30. The rectifier can be a half-wave rectifier or a full-wave rectifier.

[0074] In an embodiment, the control module 30 is configured to control the switch module 20 according to the current and the preset threshold value.

[0075] In the embodiment, when the control module determines that the current is lower than the preset threshold value, the air conditioning device is in the stop running state, and the control module controls the switch module to be off so as to make the filter screen in the stop running state, thereby improving the reliability of the power supply circuit. When the control module determines that the current is higher than the preset threshold value, the air conditioning device is in the running state, and the control module controls the switch module to be on so as to make the filter screen in the running state, thereby improving the reliability of the power supply circuit. The working state of the air conditioning device is determined according to the relationship between the current and the preset threshold value to control whether the filter screen is running, thereby improving the reliability of the control module.

[0076] In an embodiment, the detection module 10 comprises a voltage detection component. The voltage detection component is electrically connected between the air conditioning device and the ground, and the voltage detection component is configured to detect the voltage of the air conditioning device as the electrical information.

[0077] In the embodiment, when the air conditioning device is in the stop running state, the voltage detected by the voltage detection component is relatively small or zero. When the air conditioning device is in the running state, the voltage detected by the voltage detection component is relatively large. Therefore, when the working state of the air conditioning device changes, the voltage detected by the voltage detection component also changes. The control module controls the working state of the filter screen according to the voltage detected by the voltage detection component, so that the filter screen can be opened and closed synchronously with the air conditioning device, thereby improving the reliability of the filter screen control. Moreover, since the control module can directly read the voltage without setting an additional conversion unit, the complexity of the structure of the power supply circuit is reduced.

[0078] In an embodiment, the switch module 20 comprises a silicon controlled rectifier S.

[0079] In the embodiment, since the supply voltage and the supply current of the filter screen are relatively high, and the silicon controlled rectifier can withstand relatively high voltage and current, the silicon controlled rectifier is used as the switch module to improve the reliability of the power supply circuit. Moreover, since the silicon controlled rectifier has small conduction loss, the silicon controlled rectifier consumes less electric energy when the filter screen is in the running state, thereby reducing the loss of the power supply circuit.

[0080] Exemplarily, the control module 30 can control the silicon controlled rectifier S to be on and off through high and low level signals.

[0081] In an embodiment, the first end of the filter screen 40 is electrically connected to the first end of the power supply 50 through the live wire, the second end of the filter screen 40 is electrically connected to the second end of the power supply 50 through the zero wire, and the silicon controlled rectifier S is arranged on the live wire.

[0082] In the embodiment, when the control module controls the thyristor to be on, the first end of the filter screen is electrically connected to the first end of the power supply through the live wire, and the power supply can supply power to the filter screen to turn on the filter screen. When the control module controls the thyristor to be off, the first end of the filter screen cannot be electrically connected to the first end of the power supply, and the power supply stops supplying power to the filter screen to turn off the filter screen. By setting the thyristor on the live wire, the power supply can supply or stop supplying power to the filter screen to turn on and off the filter screen, thereby improving the reliability of the power supply circuit.

[0083] In an embodiment, the first end of the filter screen 40 is electrically connected to the first end of the power supply 50 through the live wire, the second end of the filter screen 40 is electrically connected to the second end of the power supply 50 through the zero wire, and the thyristor S is arranged on the zero wire.

[0084] In the embodiment, when the control module controls the thyristor to be on, the second end of the filter screen is electrically connected to the second end of the power supply through the zero wire, and the power supply can supply power to the filter screen to turn on the filter screen. When the control module controls the thyristor to be off, the second end of the filter screen cannot be electrically connected to the second end of the power supply, and the power supply stops supplying power to the filter screen to turn off the filter screen. By setting the thyristor on the zero wire, the power supply can supply or stop supplying power to the filter screen to turn on and off the filter screen, thereby improving the reliability of the power supply circuit.

[0085] In an embodiment, the first end of the filter screen 40 is electrically connected to the first end of the power supply 50 through the live wire, the second end of the filter screen 40 is electrically connected to the second end of the power supply 50 through the zero wire, and the thyristor S is arranged on the zero wire.

[0086] In the embodiment, when the control module controls the thyristor to be on, the first end of the filter screen is electrically connected to the first end of the power supply through the live wire, and the power supply can supply power to the filter screen to turn on the filter screen. When the control module controls the thyristor to be off, the first end of the filter screen cannot be electrically connected to the first end of the power supply, and the power supply stops supplying power to the filter screen to turn off the filter screen. By setting the thyristor on the live wire, the power supply can supply or stop supplying power to the filter screen to turn on and off the filter screen, thereby improving the reliability of the power supply circuit.

[0087] Exemplarily, the number of thyristors S can be multiple, and the multiple thyristors S can be arranged on the live wire and the zero wire respectively.

[0088] Exemplarily, when it is necessary to separately detect the working state of the filter screen 40, the detection module 10 can be arranged between the thyristor S and the filter screen 40. For example, the current detection component can be electrically connected between the thyristor S and the filter screen 40.

[0089] In an embodiment, the switch module 20 is integrated in the filter screen 40.

[0090] In the embodiment, the switch module is integrated in the filter screen, so that an additional switch module is not needed to turn on and turn off the filter screen and the power supply, thereby reducing the complexity of the power supply circuit structure.

[0091] In an embodiment, the power supply 50 is configured to supply power to the air conditioning device and the control module 30.

[0092] In the embodiment, the power supply circuit supplies power to the air conditioning device and the control module through the power supply, thereby reducing the complexity of the power supply circuit and the complexity of the power supply circuit structure.

[0093] In an embodiment, the power supply circuit further comprises a first protection module 60 and a second protection module 70. The first protection module 60 is electrically connected between the power supply 50, the air conditioning device and the control module 30, and the first protection module 60 is configured to protect the control module 30 and the air conditioning device. The second protection module 70 is electrically connected between the first protection module 60 and the control module 30, and the second protection module 70 is configured to protect the control module 30.

[0094] In the embodiment, the air conditioning device needs to receive power frequency alternating current, which may be subjected to various impacts. The first protection module is configured to protect the air conditioning device and the control module, thereby improving the reliability of the power supply circuit. Meanwhile, the control module needs to control the switch module according to the detection module. The second protection module is configured to protect the control module, thereby avoiding damage to the control module and affecting the control of the filter screen, and thereby improving the reliability of the power supply circuit.

[0095] In an embodiment, as shown in Figure 4 The first protection module 60 comprises at least one of the following: a current protection component 61, a first end of the current protection component 61 being configured to be electrically connected to the power supply 50, a second end of the current protection component 61 being electrically connected to the air conditioning device and the control module 30, and the current protection component 61 being configured to protect the air conditioning device and the control module 30 from overcurrent. A surge protection component 62 is electrically connected between the current protection component 61, the air conditioning device and the control module 30.

[0096] In the embodiment, when the load of the air conditioning device is abnormal, the control module is abnormal or the power supply is abnormal, the power supply outputs a large current to the air conditioning device. The current protection component can play a protection role to avoid the air conditioning device and the control module from being damaged, thereby improving the reliability of the power supply circuit. Meanwhile, the surge protection component can effectively suppress the impact of instantaneous high voltage and instantaneous large current on the air conditioning device and the control module, thereby avoiding damage to the air conditioning device and the control module, and thereby improving the safety of the power supply circuit.

[0097] Exemplarily, the overcurrent protection component 61 can include a fuse, which can include a fuse wire, etc.

[0098] In an embodiment, the second protection module 70 includes at least one of the following. A reverse flow prevention component 71 electrically connected between the first protection module 60 and the control module 30, the reverse flow prevention component 71 being configured to prevent current from flowing from the control module 30 to the first protection module 60. A current limiting component 72 electrically connected between the first protection module 60 and the control module 30, the current limiting component 72 being configured to limit current flowing from the first protection module 60 to the control module 30. A voltage stabilizing component 73 having a first end electrically connected between the first protection module 60 and the control module 30, and a second end configured to be electrically connected to the ground terminal GND, the voltage stabilizing component 73 being configured to stabilize voltage output from the first protection module 60 to the control module 30. A filtering component 74 electrically connected between the first protection module 60 and the control module 30, the filtering component 74 being configured to filter voltage and / or current output from the first protection module 60 to the control module 30.

[0099] In the embodiment, the reverse flow prevention component can ensure that the first protection module unidirectionally transmits current to the control module, thereby reducing the risk of failure of the power supply circuit and improving the reliability of the power supply circuit. The current limiting component can limit current input from the first protection module to the control module, thereby avoiding damage to the control module caused by excessively large current input to the control module, and improving the reliability of the power supply circuit. Moreover, the voltage stabilizing component can stabilize voltage output from the power supply to the control module within a constant value, regardless of whether the voltage of the power supply fluctuates, thereby improving the reliability of the power supply circuit. Since the voltage or current output from the power supply can fluctuate, the filtering component can filter out interference, thereby transmitting stable voltage or current to the control component and improving the reliability of the power supply circuit.

[0100] In an embodiment, the reverse flow prevention component 71 includes a diode, the current limiting component 72 includes a second resistor, and the voltage stabilizing component 73 includes a voltage stabilizing diode. The anode of the diode is electrically connected to the first protection module 60, the first end of the second resistor is electrically connected to the cathode of the diode, and the second end of the second resistor is electrically connected to the control module 30. The cathode of the voltage stabilizing diode is electrically connected to the second end of the second resistor and the control module 30, and the anode of the voltage stabilizing diode is configured to be electrically connected to the ground terminal.

[0101] In the embodiment, since the diode, the resistor, and the voltage stabilizing diode have simple structures, the reverse flow prevention component is formed by a diode, the current limiting component is formed by a resistor, and the voltage stabilizing component is formed by a voltage stabilizing diode, thereby reducing the complexity of the structure of the power supply circuit.

[0102] In an embodiment, the filtering component 74 comprises a capacitor. A first end of the capacitor is electrically connected to the control module 30, and a second end of the capacitor is electrically connected to a ground terminal.

[0103] In the embodiment, the capacitor has a simple structure, and the filtering component is formed by the capacitor, thereby reducing the complexity of the structure of the filtering component.

[0104] For example, the filtering component 74 can further comprise an inductor and the inductor and the capacitor.

[0105] In an embodiment, the power supply circuit further comprises an AC / DC conversion module. The AC / DC conversion module is electrically connected between the power supply and the control module, and the AC / DC conversion module is configured to convert the power frequency alternating current output by the power supply 50 into direct current.

[0106] In the embodiment, the control module needs to be powered by direct current, and the AC / DC conversion module is configured to convert the power frequency alternating current into direct current, thereby enabling the control module to operate normally and improving the reliability of the power supply circuit.

[0107] For example, the AC / DC conversion module can be arranged between the second protection module 70 and the control module 30, or arranged between the first protection module 60 and the second protection module 70. The AC / DC conversion module can comprise a rectifying component, a filtering component, and a direct current voltage conversion component.

[0108] An example embodiment of the present disclosure provides a power supply circuit, as shown in Figure 5As shown, the power supply circuit includes a Hall sensor 11, a silicon controlled rectifier S, a fuse F, a surge protection component 62, a diode D, a second resistor R, a zener diode ZD, a capacitor C, and a control module 30. The power supply line of the air conditioning device is electrically connected with the plug A. When the plug A is plugged into the socket B, the power supply 50 provides the air conditioning device with the power frequency alternating current through the power supply line. The power supply line includes a neutral wire N, a live wire L, and a ground wire (hereinafter, the live wire between the surge protection component 62 and the plug A is referred to as the first live wire, the live wire between the surge protection component 62 and the filter screen 40 is referred to as the second live wire, the neutral wire between the surge protection component 62 and the plug A is referred to as the first neutral wire, and the neutral wire between the surge protection component 62 and the filter screen 40 is referred to as the second neutral wire). The Hall sensor 11 is arranged on the first live wire, and the Hall sensor 11 is electrically connected with the power supply 50, the fuse F, and the first end of the control module 30. The first live wire is electrically connected with the first end of the surge protection component 62 through the fuse F, the first neutral wire is electrically connected with the second end of the surge protection component 62, the third end of the surge protection component 62 is electrically connected with the anode of the diode D and the first end of the silicon controlled rectifier S through the second live wire, and the fourth end of the surge protection component 62 is electrically connected with the anode of the zener diode ZD, the first end of the capacitor C, the second end of the filter screen 40, and the ground terminal GND. The second end of the silicon controlled rectifier S is electrically connected with the first end of the filter screen 40. The cathode of the diode D is electrically connected with the first end of the second resistor R. The second end of the second resistor R is electrically connected with the cathode of the zener diode ZD, the second end of the capacitor C, and the second end of the control module 30. The third end of the control module 30 is electrically connected with the control terminal of the silicon controlled rectifier S, and the fourth end of the control module 30 is electrically connected with the ground terminal GND.

[0109] For example, when the air conditioning device is switched from the stop state to the running state according to the current detected by the Hall sensor 11, the control module 30 sends a high-level signal to the silicon controlled rectifier S, so that the filter screen 40 and the air conditioning device are turned on at the same time. When the air conditioning device is switched from the running state to the stop state according to the current detected by the Hall sensor 11, the control module 30 sends a low-level signal to the silicon controlled rectifier S, so that the filter screen 40 and the air conditioning device are turned off at the same time.

[0110] In one example embodiment, an air conditioning device is provided, which includes the power supply circuit as described above. The air conditioning device is, for example, an air conditioner, a fresh air machine, an air purifier, or the like.

[0111] Reference Figure 6 As shown, the air conditioning device 400 can include one or more of the following components: a processing component 402, a memory 404, a power supply component 406, a multimedia component 408, an audio component 410, an input / output (I / O) interface 412, a sensor component 414, and a communication component 416.

[0112] The processing component 402 generally controls the overall operations of the air conditioning device 400, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 402 can include one or more processors 420 to execute instructions to complete all or part of steps of the above methods. In addition, the processing component 402 can include one or more modules to facilitate the interaction between the processing component 402 and other components. For example, the processing component 402 can include a multimedia module to facilitate the interaction between the multimedia component 408 and the processing component 402.

[0113] The memory 404 is configured to store various types of data to support operations of the air conditioning device 400. Examples of these data include instructions for any application or method operating on the air conditioning device 400, contact data, phonebook data, messages, pictures, videos, and the like. The memory 404 can be implemented by any type of volatile or non-volatile storage terminals or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0114] The power component 406 provides power to various components of the air conditioning device 400. The power component 406 can include a power management system, one or more power sources, and other components associated with generating, managing and distributing power for the air conditioning device 400.

[0115] The multimedia component 408 includes a screen to provide an output interface between the air conditioning device 400 and the user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense a touch, a slide and a gesture on the touch panel. The touch sensor can not only sense a boundary of a touching or sliding action, but also detect duration and pressure related to the touching or sliding operation. In some embodiments, the multimedia component 408 includes a front camera module and / or a rear camera module. The front camera module and / or the rear camera module can receive external multimedia data when the air conditioning device 400 is in an operation mode, such as a photographing mode or a video mode. Each of the front camera module and the rear camera module can be a fixed optical lens system or have a focal length and optical zoom capability.

[0116] The audio component 410 is configured to output and / or input audio signals. For example, the audio component 410 includes a microphone (MIC) that is configured to receive an external audio signal when the air conditioning device 400 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 404 or transmitted via the communication component 416. In some embodiments, the audio component 410 also includes a speaker for outputting audio signals.

[0117] The I / O interface 412 provides an interface between the processing component 402 and peripheral interface modules, which can be a keypad, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0118] The sensor component 414 includes one or more sensors for providing various aspects of state evaluation for the air conditioning device 400. For example, the sensor component 414 can detect an on / off state of the air conditioning device 400, relative positioning of components, such as a display and a keypad of the air conditioning device 400, a change of location of the air conditioning device 400 or a component of the air conditioning device 400, presence or absence of user contact with the air conditioning device 400, an orientation or acceleration / deceleration of the air conditioning device 400, and a temperature change of the air conditioning device 400. The sensor component 414 can include a proximity sensor configured to detect presence of a nearby object without any physical touch. The sensor component 414 can further include a light sensor, such as a CMOS or CCD image sensor, for use in an imaging application. In some embodiments, the sensor component 414 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0119] The communication component 416 is configured to facilitate wired or wireless communication between the air conditioning device 400 and another terminal. The air conditioning device 400 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof. In an example embodiment, the communication component 416 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an example embodiment, the communication component 416 further includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technology.

[0120] In an exemplary embodiment, the air conditioning apparatus 400 can be implemented with one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing terminals (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic elements.

[0121] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0122] In addition, the terms "first", "second", etc. are used only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0123] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the utility disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure following the general principles thereof and including such departures from the present disclosure that come within known or customary practice in the art to which the present disclosure pertains. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the present disclosure are indicated by the claims.

[0124] It should be understood that the present disclosure is not limited to the precise structures described and shown in the drawings, and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims appended hereto.

Claims

1. A power supply circuit, characterized by comprising: The power supply circuit comprises: a detection module, configured to detect electrical information of the air conditioning device, wherein the electrical information is used to reflect an operating state of the air conditioning device; a switch module, electrically connected between a filter screen of the air conditioning device and a power supply, and configured to make the filter screen and the power supply conductive or disconnected; a control module, electrically connected to the detection module and the switch module, and configured to control the switch module to make the filter screen and the power supply conductive or disconnected according to the electrical information.

2. The power supply circuit of claim 1, wherein, The detection module comprises: a current detection component, electrically connected between the power supply and the air conditioning device, and electrically connected to the control module, and configured to detect a current of the air conditioning device as the electrical information.

3. The power supply circuit according to claim 1 or 2, characterized in that, The detection module is configured to detect electrical information between the power supply and the air conditioning device.

4. The power supply circuit of claim 2, wherein, The current detection component comprises a Hall sensor.

5. The power supply circuit of claim 4, wherein, The current detection component further comprises: a conversion unit, electrically connected to the Hall sensor and the control module, and configured to convert the current detected by the Hall sensor into a voltage and transmit the voltage to the control module.

6. The power supply circuit of claim 2, wherein, The control module is configured to control the switch module according to the current and a preset threshold.

7. The power supply circuit of claim 1, wherein, The detection module comprises: a voltage detection component, electrically connected between the air conditioning device and a ground terminal, and configured to detect a voltage of the air conditioning device as the electrical information.

8. The power supply circuit of claim 1, wherein, The switch module comprises a thyristor.

9. The power supply circuit of claim 1, wherein, The switch module is integrated in the filter screen.

10. The power supply circuit of claim 1, wherein, The power supply is configured to supply power to the air conditioning device and the control module.

11. The power supply circuit of claim 10, wherein, The power supply circuit further comprises: a first protection module, electrically connected between the power supply, the air conditioning device and the control module, and configured to protect the control module and the air conditioning device; a second protection module, electrically connected between the first protection module and the control module, and configured to protect the control module.

12. The power supply circuit of claim 11, wherein, The first protection module comprises at least one of: an overcurrent protection component, having a first end electrically connected to the power supply, and a second end electrically connected to the air conditioning device and the control module, and configured to protect the air conditioning device and the control module from overcurrent; a surge protection component, electrically connected between the overcurrent protection component, the air conditioning device and the control module.

13. The power supply circuit of claim 11, wherein, The second protection module comprises at least one of: an anti-backflow component, electrically connected between the first protection module and the control module, and configured to prevent current from flowing back from the control module to the first protection module; an anti-backflow component, electrically connected between the first protection module and the control module, and configured to prevent current from flowing back from the control module to the first protection module; a current-limiting component electrically connected between the first protection module and the control module, the current-limiting component being configured to limit the current flowing from the first protection module to the control module; a voltage-stabilizing component having a first end electrically connected between the first protection module and the control module and a second end configured to be electrically connected to a ground terminal, the voltage-stabilizing component being configured to stabilize the voltage outputted from the first protection module to the control module; a filtering component electrically connected between the first protection module and the control module, the filtering component being configured to filter the voltage and / or current outputted from the first protection module to the control module.

14. An air conditioning apparatus characterized by comprising: The air conditioning device comprises the power supply circuit according to any one of claims 1 to 13.

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