Warm air purifier

Abstract

The utility model provides a warm air purifier which comprises a main control module, a power module, an air supply module, a heating module, a multiple temperature protection module and an air purification module. The main control module is connected with the power module, the air supply module, the heating module and the air purification module. The power module is used for supplying power to all the modules, the air supply module is used for supplying air to the outside, and the heating module is used for increasing the air supply temperature of air supplied by the air supply module. The multi-temperature protection module comprises a first temperature protection module and a second temperature protection module, and the main control module is connected with the first temperature protection module and used for detecting the air supply temperature so as to close the heating module when the air supply temperature is higher than a first preset temperature; the second temperature protection module is used for cutting off power supply of the heating module when the air supply temperature is higher than a second preset temperature; the second preset temperature is higher than the first preset temperature. Based on the arrangement of multiple over-temperature protection modules, the use safety of the warm air purifier is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a warm air purifier. Background Art

[0002] A warm air purifier is an electrical device that combines heating and air purification functions. It can provide warm air and purify the air, saving space while meeting the dual needs of users for heating and air purification in winter. Therefore, it has become one of the more common electrical appliances in modern office environment seats. The warm air purifier is mainly installed in the console and can provide personal micro-environment air conditioning and temperature regulation for the office seat area.

[0003] However, there are still some problems with the existing warm air purifiers in terms of safety of use and control flexibility. In terms of safety of use, it is mainly manifested in the lack of a reasonable overheating protection mechanism, which makes it impossible to ensure that the heating module can be controlled to stop heating in time when the heat dissipation of the device fails. Therefore, it often causes the device to overheat, causing safety hazards and poor safety of use. In terms of control flexibility, it is mainly manifested in the single control method and the inability to achieve centralized control of multiple devices. Often, a single device can only be controlled manually, which is inconvenient to use and has poor flexibility.

[0004] Therefore, it is necessary to propose a solution to solve at least one of the above problems. Utility Model Content

[0005] In order to overcome the defects of the above-mentioned prior art, the utility model provides a warm air purifier, which improves the safety of the device based on the setting of multiple temperature protection modules. The specific technical solution is as follows:

[0006] The utility model provides a warm air purifier, comprising: a main control module, a power module, an air supply module, a heating module, a multiple temperature protection module and an air purification module for sterilization and disinfection;

[0007] The main control module is respectively connected to the power supply module, the air supply module, the heating module and the air purification module;

[0008] The air supply module is used to supply air to the outside, and the heating module is used to increase the air supply temperature of the air supplied by the air supply module;

[0009] The multiple temperature protection module includes a first temperature protection module and a second temperature protection module; the main control module is connected to the first temperature protection module and is used to obtain the supply air temperature so as to turn off the heating module when the supply air temperature is higher than the first preset temperature; the second temperature protection module is used to obtain the supply air temperature so as to cut off the power supply of the heating module when the supply air temperature is higher than the second preset temperature and the main control module does not turn off the heating module; the second preset temperature is higher than the first preset temperature.

[0010] In a specific embodiment, the first temperature protection module includes a temperature and humidity detection chip and a first capacitor. The temperature and humidity detection chip is connected to the main control module via the first capacitor. The temperature and humidity detection chip is used to obtain the supply air temperature and send it to the main control module.

[0011] In a specific embodiment, the second temperature protection module includes a temperature control switch, and a thermocouple temperature sensor, a second capacitor and a thermocouple digital converter connected in sequence;

[0012] The temperature control switch is connected to the main control module and the heating module respectively; the thermocouple temperature sensor is used to detect the supply air temperature and generate an analog signal, the thermocouple digital converter is used to convert the analog signal into a digital signal and send it to the main control module, and the temperature control switch is used to connect or cut off the power supply of the heating module.

[0013] In a specific embodiment, the first preset temperature ranges from 150°C to 170°C, and the second preset temperature ranges from 170°C to 190°C.

[0014] In a specific embodiment, the multiple temperature protection module also includes a third temperature protection module, and the third temperature protection module includes a radiator. The radiator is connected to the main control module and is used to continuously dissipate heat for the heating module when the main control module turns off the heating module and the temperature of the heating module is higher than a third preset temperature.

[0015] In a specific embodiment, the heating module includes a PTC ceramic heating sheet.

[0016] In a specific embodiment, the power module includes a fuse, an X capacitor, a varistor, a discharge resistor, a first inductor, an AC-DC power module, a second inductor, a filter capacitor and a buck converter;

[0017] The input end of the fuse is used to connect to an external power supply, and the output end of the fuse is connected to the first inductor through the X capacitor, the varistor and the discharge resistor; the X capacitor, the varistor and the discharge resistor are connected in parallel; the first inductor is connected to the input end of the AC-DC power module, the output end of the AC-DC power module is connected to the input end of the buck converter through the second inductor and the filter capacitor, and the output end of the buck converter is connected to the main control module.

[0018] In a specific embodiment, it also includes a communication module whose signal is connected to the main control module, and the communication module is used to communicate with an external network and / or an external device; the communication module includes at least one wired communication module and / or at least one wireless communication module.

[0019] In a specific embodiment, the air purification module includes an ultraviolet light module and / or an ion generator and / or a PM2.5 detection module;

[0020] The PM2.5 detection module includes a controller, a fan driving circuit, a fan, a laser tube driving circuit, a laser tube, an amplifier circuit and a photosensitive tube; the controller is respectively connected to the fan driving circuit, the laser tube driving circuit and the amplifier circuit; the fan driving circuit is connected to the fan, the laser tube driving circuit is connected to the laser tube, and the amplifier circuit is connected to the photosensitive tube.

[0021] In a specific embodiment, a touch module is further included, and the touch module includes a touch sensing chip and at least one touch button; the touch button signal is connected to the touch sensing chip, and the touch sensing chip signal is connected to the main control module.

[0022] The utility model has at least the following beneficial effects:

[0023] The utility model provides a warm air purifier, which, by setting multiple temperature protection modules, can prevent the heating module from continuing to heat up and causing the device temperature to be too high, thereby causing safety hazards, through a multi-level over-temperature protection mechanism when the heat dissipation function of the device fails. Specifically, the first temperature protection module serves as the first barrier. When the first temperature protection module detects that the supply air temperature is higher than the first preset temperature, the main control module can promptly control the heating module to stop heating. When the first temperature protection module fails, the supply air temperature continues to rise to exceed the second preset temperature, and the second temperature protection module can cut off the power supply to the heating module, thereby stopping the heating module from heating. When the heating module is turned off and the temperature of the heating module exceeds the third preset temperature, the third temperature protection module can also be used to continuously dissipate the heat of the heating module, so as to further improve the safety of the device and provide a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the module structure of the warm air purifier;

[0026] Figure 2 is a circuit diagram of a first temperature protection module;

[0027] Figure 3 is a circuit diagram of a second temperature protection module;

[0028] Figure 4 is a circuit diagram of a power module;

[0029] Figure 5 This is a circuit diagram of the PM2.5 detection module;

[0030] Figure 6 This is a circuit diagram of a touch module;

[0031] Figure 7 It is a schematic diagram of the shell structure of the warm air purifier;

[0032] Figure 8 It is a schematic diagram of the structure of the touch module on the shell.

[0033] Reference numerals:

[0034] 1-main control module; 2-power module; 3-air supply module; 4-heating module; 5-air purification module; 6-first temperature protection module; 7-second temperature protection module; 8-third temperature protection module; 9-communication module; 10-housing; 101-air outlet; 11-touch module; 111-touch button. DETAILED DESCRIPTION

[0035] In the following, various embodiments of the present invention will be described more fully. The present invention may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present invention to the specific embodiments disclosed herein, but rather the present invention should be understood to cover all adjustments, equivalents and / or alternatives that fall within the spirit and scope of the various embodiments of the present invention.

[0036] Hereinafter, the terms "include" or "may include" used in various embodiments of the present invention indicate the presence of disclosed functions, operations or elements, and do not limit the addition of one or more functions, operations or elements. In addition, as used in various embodiments of the present invention, the terms "include", "have" and their cognates are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing or the possibility of adding one or more features, numbers, steps, operations, elements, components or combinations of the foregoing.

[0037] In various embodiments of the present invention, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0038] The expressions (such as "first", "second", etc.) used in the various embodiments of the present invention may modify the various components in the various embodiments, but may not limit the corresponding components. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the present invention, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0039] It should be noted that in the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Please refer to Figure 1 The present embodiment provides a warm air purifier, comprising: a main control module 1, a power module 2, an air supply module 3, a heating module 4, a multiple temperature protection module and an air purification module 5 for sterilization and disinfection.

[0041] The main control module 1 is respectively connected to the power module 2, the air supply module 3, the heating module 4 and the air purification module 5. Exemplarily, the main control module 1 includes a microcontroller MCU and a circuit board, the microcontroller MCU is used to send control signals to each module, and the circuit board is used to transfer the power input by the power module 2 to each module so that each module can operate normally.

[0042] The air supply module 3 is used to supply air to the outside, and the heating module 4 is used to heat the air supplied by the air supply module 3, thereby increasing the air supply temperature of the air supplied by the air supply module 3 to achieve the effect of providing warm air.

[0043] The multiple temperature protection module includes a first temperature protection module 6 and a second temperature protection module 7. The main control module 1 is connected to the first temperature protection module 6, and obtains the supply air temperature based on the first temperature protection module 6, so as to turn off the heating module 4 when the supply air temperature is higher than the first preset temperature, thereby achieving the effect of stopping heating in time when the heat dissipation of the device fails.

[0044] The second temperature protection module 7 can also obtain the air supply temperature, and the second temperature protection module 7 is used to cut off the power supply of the heating module 4 when the air supply temperature is higher than the second preset temperature and the main control module 1 does not turn off the heating module 4, so that the heating module 4 stops heating. The second preset temperature is higher than the first preset temperature.

[0045] It can be understood that since the first preset temperature is lower than the second preset temperature, the first temperature protection module 6 will serve as the first heavy over-temperature protection barrier. When the first temperature protection module 6 detects that the supply air temperature is higher than the first preset temperature, it sends a signal to the main control module 1, so that the main control module 1 controls the heating module 4 to stop heating. However, when the first temperature protection module 6 fails due to a malfunction or other reasons, the main control module 1 cannot control the heating module 4 to stop heating. The heating module 4 continues to heat so that the supply air temperature continues to rise. When the supply air temperature is higher than the second preset temperature, the second temperature protection module 7 works, cuts off the power supply to the heating module 4, and the heating module 4 is powered off and stops heating. Based on the settings of the first temperature protection module 6 and the second temperature protection module 7, the utility model has good safety in use.

[0046] Optionally, the first preset temperature may range from 150° C. to 170° C., and the second preset temperature may range from 170° C. to 190° C. Preferably, the first preset temperature is 160° C., and the second preset temperature is 180° C.

[0047] In this embodiment, please refer to Figure 2, the first temperature protection module 6 includes a temperature and humidity detection chip U3 and a first capacitor C7. The temperature and humidity detection chip U3 is connected to the main control module 1 via the first capacitor C7, and is used to obtain the air supply temperature and send it to the main control module 1. Specifically, the temperature and humidity detection chip U3 is used to convert the detected temperature and humidity analog signal into a digital signal and send it to the main control module 1, so that the main control module 1 sends a control signal to the heating module 4 to start or stop heating according to the digital signal. In addition, it should be noted that the temperature and humidity detection chip U3 can also be used to detect the temperature and humidity in the external environment, so that the device also has a temperature and humidity detection function.

[0048] Furthermore, the device may also include a communication module 9 connected to the main control module 1 by signal, and the communication module 9 includes at least one wired communication module and / or at least one wireless communication module, and the wired communication module and the wireless communication module are used to communicate with an external network and / or an external device. On the basis of the above embodiment, the temperature and humidity data detected by the temperature and humidity detection chip U3 can be sent to an external gateway through a wired communication module and / or a wireless communication module, so that the data is forwarded or stored through the external gateway, so as to facilitate subsequent air quality analysis, monitoring, etc. based on the data. The temperature and humidity detection chip U3 can also send the temperature and humidity data to an external device, such as a display, through a wired communication module and / or a wireless communication module, and display it through the display, thereby improving the degree of data visualization.

[0049] Exemplarily, the wired communication module may include an RS485 interface, a UART interface, and a PANEL interface, etc. An external gateway or other networked device may be connected via the RS485 interface, and after being connected to the external gateway, the user may also send a control signal to the main control module 1 by remote control. An external device, such as a touch screen, may be connected via the UART interface, so that various parameters and data in the circuit such as the temperature and humidity data collected by the temperature and humidity detection chip U3 can be displayed, and a control signal may also be sent to the main control module 1 by touching the touch screen. In addition, an external control panel may be connected via the PANEL interface to control the device via the external control panel, so as to meet the occasions and operation requirements of different installation requirements in actual applications. Wireless communication modules include, but are not limited to, WI FI modules, Zigbee modules, Bluetooth modules, etc.

[0050] In this embodiment, the second temperature protection module 7 includes a temperature control switch, and a thermocouple temperature sensor, a second capacitor and a thermocouple digital converter connected in sequence. Figure 1 and Figure 3Specifically, the temperature control switch is connected to the main control module 1 and the heating module 4 respectively, the thermocouple temperature sensor CN7 is used to detect the supply air temperature and generate an analog signal, and the thermocouple digital converter U9 is used to convert the analog signal into a digital signal and send it to the main control module, so that the main control module controls the temperature control switch to connect or cut off the power supply of the heating module 4 according to the digital signal.

[0051] In the present embodiment, the multiple temperature protection module also includes a third temperature protection module 8, and the third temperature protection module 8 includes a radiator, which is connected to the main control module 1 and is used to continuously dissipate heat to the heating module 4 when the main control module 1 turns off the heating module 4 and the temperature of the heating module 4 is higher than the third preset temperature. Specifically, the temperature of the heating module 4 can be acquired by the first temperature protection module 6 and transmitted to the main control module 1. When the main control module 1 determines that the temperature of the heating module 4 is greater than the third preset temperature, a control signal for turning on heat dissipation is sent to the radiator, so that the radiator continuously dissipates heat to the heating module 4. When the temperature of the heating module 4 is lower than the third preset temperature, the main control module 1 controls the radiator to stop dissipating heat. Exemplarily, the range of the third preset temperature can be between 40°C and 60°C, preferably 50°C.

[0052] In this embodiment, the heating module 4 may include a PTC ceramic heating sheet. In practical applications, when the radiator fails, since the heating circuit of the PTC ceramic heating sheet is sealed in the ceramic, the heater in the PTC ceramic heating sheet cannot be fully cooled, and the power will automatically drop sharply. At this time, the surface temperature of the heater will be maintained at about the Curie temperature (generally around 250°C), so that the surface of the heater will not appear "red", further improving the reliability and safety of the device.

[0053] In this embodiment, the power module 2 includes a fuse, an X capacitor, a varistor, a discharge resistor, a first inductor, an AC-DC power module, a second inductor, a filter capacitor and a buck converter.

[0054] Specifically, the input end of the fuse is used to connect to an external power source, such as an AC power source, and the output end of the fuse is connected to the first inductor through an X capacitor, a varistor and a discharge resistor. The X capacitor, the varistor and the discharge resistor are connected in parallel. The first inductor is connected to the input end of the AC-DC power module, and the output end of the AC-DC power module is connected to the input end of the buck converter through a second inductor and a filter capacitor, and the output end of the buck converter is connected to the main control module 1.

[0055] Please refer to Figure 4, exemplarily, the X capacitor may include X capacitors C1 and C2, and the discharge resistor may include discharge resistors R51 and R52. The fuse F1, X capacitor C1, varistor VD1, X capacitor C2, discharge resistor R51, discharge resistor R52 and first inductor L1 form an AC pre-stage protection filter circuit, wherein the fuse F1 is an overcurrent protection element, the X capacitors C1 and C2 are used to filter out differential mode interference, the varistor VD1 is a surge protection component for absorbing surge current in the power grid, the common mode inductor L1 is used to suppress common mode noise, and the discharge resistors R51 and R52 are used to reduce the voltage to a safe voltage within a certain period of time after disconnecting from the external power supply to avoid electric shock accidents. Furthermore, after the AC power supply passes through the pre-stage protection filter circuit, the power supply is reduced to a 5V DC power supply through the AC-DC power supply module 2U1, and then filtered through the second electrode L2, filter capacitors C3 and C5 to obtain a relatively pure 5V DC power supply. The 5V DC power supply is stepped down by the buck converter U2 to obtain a 3.3V DC power supply to power each module.

[0056] In this embodiment, the air purification module 5 includes an ultraviolet light module and / or an ion generator and / or a PM2.5 detection module. The ultraviolet light module is integrated with an ultraviolet lamp, which can kill bacteria, viruses and other microorganisms in the air after being started. Preferably, the ultraviolet light module includes a UVC+UVA dual-band deep ultraviolet LED, so that the sterilization effect reaches 99.9%. The ion generator can release negative ions after being started, which can play a role in sterilization and air purification. Preferably, the ion concentration released by the ion generator reaches 10 million pcs / cm 3 The PM2.5 detection module can detect the external air quality, and can send the detected air quality data to an external gateway or external device through the communication module 9 for air quality monitoring and analysis.

[0057] For example, please refer to Figure 5 , the PM2.5 detection module may include a controller, a fan drive circuit, a fan, a laser tube drive circuit, a laser tube, an amplifier circuit and a photosensitive tube. Specifically, the controller is connected to the fan drive circuit, the laser tube drive circuit and the amplifier circuit respectively. The fan drive circuit is connected to the fan, the laser tube drive circuit is connected to the laser tube, and the amplifier circuit is connected to the photosensitive tube. In practical applications, through the operation of the fan, a negative pressure can be generated inside the warm air purifier to perform air sampling. The laser tube can irradiate the sampled gas, and when the particles in the sampled gas pass through a focused light beam such as a laser, light scattering will occur. The photosensitive tube can collect scattered light and generate an electrical signal, which is amplified by the amplifier circuit and transmitted to the controller. After being processed by the controller, the electrical signal can finally be sent to an external gateway or external device.

[0058] In this embodiment, a touch module is also included, and the touch module includes a touch sensing chip U5 and at least one touch button. The touch button signal is connected to the touch sensing chip U5, and the touch sensing chip U5 signal is connected to the main control module 1. For example, please refer to Figure 6 The touch keys may include touch keys K0, K1, K2 and K3. When the sensing disks of the touch keys K0, K1, K2 and K3 sense that the user's fingers are pressed, the corresponding touch sensing chip U5 output pins KEY0, KEY1, KEY2 and KEY3 output high levels, thereby completing the sensing detection of the touch keys. Based on sensing the user's touch, the touch sensing chip U5 sends a control signal to the main control module 1, so that the main control module 1 controls each module accordingly.

[0059] In actual application, for example, the touch buttons K0, K1, K2 and K3 can correspond to the power button, wind speed adjustment button, timing button and temperature adjustment button respectively. Specifically, the power button can be switched on and off by touching the power button, the ultraviolet light module and the ion generator can be turned on or off by long pressing the power button, the air supply wind speed of the air supply module 3 can be controlled by touching the wind speed adjustment button, for example, two gears of low speed and high speed can be set, the time of automatic shutdown can be set by touching the timing button, for example, four gears of 2 hours, 4 hours, 6 hours and 8 hours can be set, and the device can be automatically shut down after 8 hours by default, and the heating temperature of the heating module 4 can be adjusted by touching the temperature adjustment button, for example, three gears of low temperature, high temperature and heating off can be set.

[0060] Please refer to Figure 7 For example, the device further includes a housing 10, on which an air inlet and an air outlet 101 are provided. The air supply temperature detected by the first temperature protection module 6 and the second temperature protection module 7 is mainly the air temperature at the air outlet 101. The touch module 11 is located on the housing 10, and the touch module 11 may include Figure 8 The four touch buttons 111 arranged from left to right are respectively a power button, a wind speed adjustment button, a timing button and a temperature adjustment button, so as to realize the various control functions mentioned above.

[0061] In summary, a warm air purifier of the utility model is provided with multiple temperature protection modules, so that when the heat dissipation function of the device fails, it can prevent the heating module from continuing to heat up and causing the device temperature to be too high and cause safety hazards through a multi-level over-temperature protection mechanism. Specifically, the first temperature protection module 6 serves as the first barrier. When the first temperature protection module 6 detects that the supply air temperature is higher than the first preset temperature, the main control module 1 can promptly control the heating module 4 to stop heating. When the first temperature protection module 6 fails, the supply air temperature continues to rise to exceed the second preset temperature, and the second temperature protection module 7 can cut off the power supply of the heating module 4, so that the heating module 4 stops heating. When the heating module 4 is turned off and the temperature of the heating module 4 exceeds the third preset temperature, the third temperature protection module 8 can also be used to continuously dissipate heat for the heating module 4, so as to further improve the safety of the device and provide a good user experience.

[0062] Those skilled in the art can understand that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily required for implementing the present utility model.

[0063] Those skilled in the art will appreciate that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the implementation scenario description, or can be changed accordingly and located in one or more devices different from the implementation scenario. The modules in the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules.

[0064] The above serial numbers of the utility model are for description only and do not represent the advantages or disadvantages of the implementation scenarios.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A warm air purifier, characterized in that: include: Main control module, power module, air supply module, heating module, multiple temperature protection module and air purification module for sterilization and disinfection; The main control module is respectively connected to the power supply module, the air supply module, the heating module and the air purification module; The air supply module is used to supply air to the outside, and the heating module is used to increase the air supply temperature of the air supplied by the air supply module; The multiple temperature protection module includes a first temperature protection module and a second temperature protection module; the main control module is connected to the first temperature protection module and is used to obtain the supply air temperature so as to turn off the heating module when the supply air temperature is higher than the first preset temperature; the second temperature protection module is used to obtain the supply air temperature so as to cut off the power supply of the heating module when the supply air temperature is higher than the second preset temperature and the main control module does not turn off the heating module; the second preset temperature is higher than the first preset temperature.

2. A warm air purifier according to claim 1, characterized in that: The first temperature protection module includes a temperature and humidity detection chip and a first capacitor. The temperature and humidity detection chip is connected to the main control module via the first capacitor. The temperature and humidity detection chip is used to obtain the supply air temperature and send it to the main control module.

3. A warm air purifier according to claim 1, characterized in that: The second temperature protection module includes a temperature control switch, and a thermocouple temperature sensor, a second capacitor and a thermocouple digital converter connected in sequence; The temperature control switch is connected to the main control module and the heating module respectively; the thermocouple temperature sensor is used to detect the supply air temperature and generate an analog signal, the thermocouple digital converter is used to convert the analog signal into a digital signal and send it to the main control module, and the temperature control switch is used to connect or cut off the power supply of the heating module.

4. A warm air purifier according to any one of claims 1 to 3, characterized in that: The first preset temperature ranges from 150°C to 170°C, and the second preset temperature ranges from 170°C to 190°C.

5. A warm air purifier according to claim 1, characterized in that: The multiple temperature protection module also includes a third temperature protection module, which includes a radiator. The radiator is connected to the main control module and is used to continuously dissipate heat for the heating module when the main control module turns off the heating module and the temperature of the heating module is higher than a third preset temperature.

6. A warm air purifier according to claim 1 or 5, characterized in that: The heating module includes a PTC ceramic heating sheet.

7. A warm air purifier according to claim 1, characterized in that: The power module includes a fuse, an X capacitor, a varistor, a discharge resistor, a first inductor, an AC-DC power module, a second inductor, a filter capacitor and a buck converter; The input end of the fuse is used to connect to an external power supply, and the output end of the fuse is connected to the first inductor through the X capacitor, the varistor and the discharge resistor; the X capacitor, the varistor and the discharge resistor are connected in parallel; the first inductor is connected to the input end of the AC-DC power module, the output end of the AC-DC power module is connected to the input end of the buck converter through the second inductor and the filter capacitor, and the output end of the buck converter is connected to the main control module.

8. The warm air purifier according to claim 1, characterized in that: It also includes a communication module whose signal is connected to the main control module, and the communication module is used to communicate with an external network and / or an external device; the communication module includes at least one wired communication module and / or at least one wireless communication module.

9. A warm air purifier according to claim 1, characterized in that: The air purification module includes an ultraviolet light module and / or an ion generator and / or a PM2.5 detection module; The PM2.5 detection module includes a controller, a fan driving circuit, a fan, a laser tube driving circuit, a laser tube, an amplifier circuit and a photosensitive tube; the controller is respectively connected to the fan driving circuit, the laser tube driving circuit and the amplifier circuit; the fan driving circuit is connected to the fan, the laser tube driving circuit is connected to the laser tube, and the amplifier circuit is connected to the photosensitive tube.

10. A warm air purifier according to claim 1, characterized in that: It also includes a touch module, which includes a touch sensing chip and at least one touch button; the touch button signal is connected to the touch sensing chip, and the touch sensing chip signal is connected to the main control module.

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