Air purifier and control method of air purifier

Abstract

The embodiment of the invention provides an air purifier and a control method of the air purifier, the air purifier comprises a carbon dioxide absorption module and a controller, the controller controls the carbon dioxide absorption module to switch the working state, the carbon dioxide absorption module can efficiently adsorb carbon dioxide in air, and the carbon dioxide in the air can be effectively absorbed by the controller. Adsorbed carbon dioxide is released during indoor ventilation, the carbon dioxide treatment capacity of the air purifier is effectively improved, the replacement frequency is reduced by using a renewable adsorption material, and the use cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of air purification, and particularly to an air purifier and a control method thereof. Background Art

[0002] With the deterioration of air quality, the harm of harmful components in the air to the human body increases, and people's attention to air pollution is getting higher and higher. At present, common air purifiers on the market mainly focus on functions such as filtering particulate matter, removing harmful gases, and sterilization and disinfection, and have extremely limited ability to handle carbon dioxide. Although some products have tried to introduce a carbon dioxide adsorption function, the adsorption material has a short service life, needs to be frequently replaced, has a high use cost and is inconvenient. These problems make the existing air purifiers appear powerless in dealing with the increase in indoor carbon dioxide concentration and are difficult to effectively improve indoor air quality. Summary of the Invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide an air purifier and a corresponding control method of the air purifier that overcome the above problems or at least partially solve the above problems.

[0004] To solve the above problems, embodiments of the present invention disclose an air purifier, including: A carbon dioxide absorption module, configured to adsorb carbon dioxide in the air inhaled by the air purifier, or desorb the adsorbed carbon dioxide; A controller, configured to control the carbon dioxide absorption module to desorb the adsorbed carbon dioxide when the indoor is in a ventilation state; after the desorption of the carbon dioxide absorption module ends, control the carbon dioxide absorption module to adsorb carbon dioxide in the air inhaled by the air purifier.

[0005] Optionally, the carbon dioxide absorption module includes: an absorption material and a heating device; The absorption material is configured to adsorb carbon dioxide in the inhaled air in an adsorption state, or desorb the adsorbed carbon dioxide in a desorption state; The heating device is configured to heat the absorption material to switch the absorption material from the adsorption state to the desorption state; The controller is configured to control the heating device to heat when the indoor is in a ventilation state.

[0006] Optionally, the air purifier further includes a fan; The controller is further configured to control the fan to blow air at a preset wind speed after the heating of the absorption material ends.

[0007] Optionally, the air purifier further includes a dehumidification module; The controller is further configured to control the dehumidification module to dehumidify when the indoor humidity is greater than or equal to a preset humidity threshold until the indoor humidity is less than the preset humidity threshold.

[0008] Optionally, the controller is further configured to control the output of a reminder message after the sleep mode of the air purifier is turned on, and the reminder message is used to remind the user to ventilate the room.

[0009] Optionally, the carbon dioxide absorption module further includes a metal filter screen for wrapping the absorption material.

[0010] Optionally, the absorption material is in a spherical or cylindrical shape, and the particle size of the absorption material is 2 mm to 4 mm.

[0011] On the other hand, a control method for an air purifier is provided. The air purifier includes a carbon dioxide absorption module and a controller; the method includes: Controlling the carbon dioxide absorption module to desorb the adsorbed carbon dioxide when the room is in a ventilated state; After the desorption of the carbon dioxide absorption module ends, adsorbing the carbon dioxide in the air inhaled by the air purifier through the carbon dioxide absorption module.

[0012] Optionally, the carbon dioxide absorption module includes: an absorption material and a heating device; The absorption material is configured to adsorb the carbon dioxide in the inhaled air in the adsorption state, or desorb the adsorbed carbon dioxide in the desorption state; The step of controlling the carbon dioxide absorption module to desorb the adsorbed carbon dioxide when the room is in a ventilated state includes: When the room is in a ventilated state, heating the absorption material through the heating device so that the absorption material switches from the adsorption state to the desorption state.

[0013] Optionally, the air purifier further includes a fan; the method further includes: After the heating of the absorption material ends, the fan blows air at a preset wind speed.

[0014] Optionally, the air purifier further includes a dehumidification module, and the method further includes: When the indoor humidity is greater than or equal to a preset humidity threshold, controlling the dehumidification module to dehumidify until the indoor humidity is less than the preset humidity threshold.

[0015] Optionally, it further includes: After the sleep mode of the air purifier is turned on, a reminder message is output, and the reminder message is used to remind the user to ventilate the room.

[0016] An embodiment of the present invention provides an air purifier and a control method for the air purifier. The air purifier includes a carbon dioxide absorption module and a controller. The controller controls the carbon dioxide absorption module to switch its working state. The carbon dioxide absorption module can efficiently adsorb carbon dioxide in the air and release the adsorbed carbon dioxide when the room is ventilated. This not only effectively improves the processing ability of the air purifier for carbon dioxide, but also reduces the replacement frequency and the use cost by using renewable adsorption materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0018] Figure 1 is a structural block diagram of an air purifier provided by an embodiment of the present invention; Figure 2 is a structural block diagram of another air purifier provided by an embodiment of the present invention; Figure 3 is a schematic structural diagram of a carbon dioxide absorption module provided by an embodiment of the present invention; Figure 4 is a step flow chart of a control method for an air purifier provided by an embodiment of the present invention; Figure 5 is a schematic diagram of the steps of a desorption process of a carbon dioxide absorption module provided by an embodiment of the present invention; Figure 6 is a step flow chart of a control method for the sleep mode of an air purifier provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will further describe the present invention in detail with reference to the drawings and specific embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0020] With the continuous decline of air quality, the threat of harmful substances in the air to human health is increasing day by day, and the public's attention to air pollution problems is also constantly rising. As an effective indoor air improvement device, an air purifier can significantly remove indoor pollutants, thereby improving the air quality of the home environment. Relevant research data shows that during sleep, due to the relatively closed bedroom environment, with the breathing of the human body, the indoor air will gradually become turbid, and the concentration of carbon dioxide (CO2) will also rise accordingly. Sleeping in an environment with a high carbon dioxide concentration for a long time will have many adverse effects on human health, such as causing a decline in sleep quality, dizziness, fatigue, etc., and may even lead to more serious health problems. Therefore, during the sleep period, people's demand for air purifiers is more urgent. However, the market research results show that among the current air purifiers on the market, there are very few products that can effectively reduce the carbon dioxide concentration in the sleep environment.

[0021] One of the core concepts of the embodiments of the present invention is to propose an air purifier and a control method for the air purifier. The air purifier includes a carbon dioxide absorption module and a controller. The controller controls the carbon dioxide absorption module to switch its working state. The carbon dioxide absorption module can efficiently adsorb carbon dioxide in the air and release the adsorbed carbon dioxide when the indoor is ventilated, which not only effectively improves the processing ability of the air purifier for carbon dioxide, but also reduces the replacement frequency and the use cost by using renewable adsorption materials.

[0022] Refer to Figure 1 , which shows a structural block diagram of an air purifier provided by an embodiment of the present invention, and specifically may include: A carbon dioxide absorption module 10, which is used to adsorb carbon dioxide in the air inhaled by the air purifier, or desorb the adsorbed carbon dioxide; The operation of the air purifier mainly inhales indoor air into the device through a built-in fan, then passes through a series of filtration and purification modules to remove pollutants in the air, and finally releases the clean air back into the room.

[0023] The carbon dioxide absorption module is a key component of the air purifier, which is specifically designed to adsorb carbon dioxide in indoor air and improve air quality. Usually, specific materials with a high specific surface area and strong adsorption capacity, such as activated carbon, molecular sieves, or metal-organic frameworks (MOFs), etc., are used to effectively adsorb carbon dioxide in indoor air.

[0024] In the embodiments of the present invention, the carbon dioxide absorption module 10 may have two main functions: adsorption and desorption.

[0025] In one embodiment, when the air purifier is operating, i.e., in the adsorption mode, air is drawn into the device and passes through the carbon dioxide absorption module 10. The carbon dioxide absorption module can adsorb carbon dioxide molecules in the air, thereby reducing the carbon dioxide concentration in the air.

[0026] In another embodiment, when it is necessary to process the adsorbed carbon dioxide, the carbon dioxide absorption module can be switched to the desorption mode, and the adsorbed carbon dioxide is released by changing the operating conditions to complete the desorption process.

[0027] The controller 20 is configured to control the carbon dioxide absorption module to desorb the adsorbed carbon dioxide when the room is in a ventilated state; after the desorption of the carbon dioxide absorption module is completed, control the carbon dioxide absorption module to adsorb the carbon dioxide in the air inhaled by the air purifier.

[0028] In the embodiment of the present invention, the controller 20 is an intelligent control unit in the air purifier, and can manage the working mode of the carbon dioxide absorption module 10 according to the indoor ventilation state. When the system detects that the room is in a ventilated state, such as when a window or a door is opened to allow fresh air to flow in, the controller 20 will precisely activate the desorption function of the carbon dioxide absorption module 10 to release the adsorbed carbon dioxide, thereby not only clearing the residual gas in the module but also effectively restoring the adsorption capacity of the module, making it ready for the next round of carbon dioxide capture. Once the desorption process is completed, the controller 20 will switch the mode to make the carbon dioxide absorption module 10 enter the adsorption state again. In this mode, the module will start actively capturing carbon dioxide from the air inhaled by the air purifier again, further reducing the carbon dioxide concentration in the room and ensuring that the indoor air quality always remains good.

[0029] Refer to Figure 2 , which shows a structural block diagram of another air purifier provided by the embodiment of the present invention, and specifically may include: The carbon dioxide absorption module 10 includes: an absorption material and a heating device; In the embodiment of the present invention, the carbon dioxide absorption module 10 is used to process carbon dioxide in the air purifier, and may be composed of an absorption material and a heating device. The absorption material and the heating device work together to achieve the adsorption and desorption of carbon dioxide.

[0030] The absorption material is used to adsorb carbon dioxide in the inhaled air in the adsorption state, or desorb the adsorbed carbon dioxide in the desorption state; In the embodiments of the present invention, the absorbent material has the special property of effectively interacting with carbon dioxide molecules in the air in the adsorbed state, enabling the absorbent material to firmly adsorb carbon dioxide molecules on its surface or in its internal pores, thereby significantly improving the capture efficiency of carbon dioxide. When the air purifier operates, the carbon dioxide molecules in the inhaled air are quickly adsorbed by the absorbent material, effectively removing carbon dioxide from the air and significantly reducing the carbon dioxide concentration in the air, improving the indoor air quality.

[0031] The adsorption performance of the absorbent material stems from its special physical and chemical properties, such as high specific surface area, appropriate pore size, and good chemical stability. In some embodiments, the absorbent material may contain a variety of substances with excellent adsorption performance, such as activated carbon, molecular sieves, metal-organic frameworks (MOFs), and some specific chemical adsorbents, etc.

[0032] The heating device is used to heat the absorbent material to switch the absorbent material from the adsorbed state to the desorbed state; In the embodiments of the present invention, the heating device is used to heat the absorbent material to achieve the switching from the adsorbed state to the desorbed state. Specifically, the heating device provides heat to increase the temperature of the absorbent material. The increase in temperature can change the adsorption performance of the absorbent material, prompting the adsorbed carbon dioxide molecules to be released from the surface or internal pores of the absorbent material. The heating device usually adopts electric heating elements, such as resistance wires, heating sheets, etc., which can precisely control the heating temperature and heating time.

[0033] Through the action of the heating device, the absorbent material can switch from the adsorbed state to the desorbed state, restoring its adsorption capacity and preparing for the next adsorption process. This switching is achieved by changing the temperature of the absorbent material: In the adsorbed state, the absorbent material is usually at a relatively low temperature, which is conducive to its adsorption of carbon dioxide molecules. In a low-temperature environment, the adsorption sites of the absorbent material have a strong attraction to carbon dioxide molecules, and can effectively adsorb carbon dioxide molecules on its surface or in its internal pores, thereby reducing the carbon dioxide concentration in the air; as the adsorption process progresses, the adsorption sites of the absorbent material will gradually be occupied by carbon dioxide molecules, and its adsorption capacity will gradually decline. To restore the adsorption capacity of the absorbent material, a desorption process is required. At this time, the heating device heats the absorbent material to a higher temperature. In a high-temperature environment, the internal thermal motion of the absorbent material is enhanced, and the carbon dioxide molecules adsorbed on the material surface obtain sufficient energy to overcome the adsorption force and be released from the absorbent material.

[0034] Realizing the adsorption-desorption cycle through temperature change can not only effectively restore the adsorption capacity of the absorbent material, improve its service life, but also flexibly control the desorption process according to actual needs.

[0035] The controller 20 is configured to control the heating device to perform heating when the room is in a ventilation state.

[0036] In an embodiment of the present invention, when the room is in a ventilation state, the controller 20 sends an instruction to the heating device to activate its heating function. The heating device heats the absorption material, causing the adsorbed carbon dioxide molecules to desorb from the absorption material.

[0037] In some embodiments, when the user opens the indoor doors and windows for ventilation, the controller 20 controls the heating device to heat the absorption material to ensure that the carbon dioxide absorption module 10 can efficiently perform the desorption operation in a ventilation state.

[0038] In other embodiments, the controller 20 can also detect whether the room is in a ventilation state by means of built-in sensors or connection to an external ventilation system.

[0039] The air purifier further includes a blower 30; In an embodiment of the present invention, the controller 20 is further configured to control the blower 30 to blow air at a preset wind speed after the heating of the absorption material is completed.

[0040] The blower 30 is responsible for sucking indoor air into the device. The air flows through each module, and pollutants in the air are removed one by one. Finally, the clean air is released back into the room, completing the entire process of air purification.

[0041] During the desorption process, some desorbed carbon dioxide may still remain on the surface or in the internal pores of the absorption material. By blowing air, these residual carbon dioxide gases can be blown out, further cleaning the absorption material to ensure its efficient operation during the next adsorption. After the heating device finishes heating the absorption material, the temperature of the absorption material is still relatively high. By controlling the blower 30 to blow air at a preset wind speed, the temperature of the absorption material can be quickly reduced, enabling it to return to a suitable state for adsorption as soon as possible.

[0042] In some embodiments, the controller 20 can precisely control the operation of the blower according to preset wind speed parameters to ensure the efficiency and effect of the air-blowing process.

[0043] In one example, the blower 30 can be controlled to operate at the highest gear wind speed to efficiently complete the air-blowing during the desorption process. In an embodiment of the present invention, the preset wind speed can be optimized and adjusted according to the characteristics of the absorption material, the structure of the device, and the actual use environment.

[0044] The air purifier further includes a dehumidification module 40; The controller is further configured to control the dehumidification module to dehumidify when the indoor humidity is greater than or equal to a preset humidity threshold until the indoor humidity is less than the preset humidity threshold.

[0045] In the embodiment of the present invention, the dehumidification module 40 is an important part of the air purifier. By adopting physical or chemical methods, such as condensation dehumidification and desiccant dehumidification, etc., it can effectively remove the excess moisture in the air and reduce the indoor humidity, thereby creating a more comfortable and healthy living environment. The present invention does not make specific limitations on the selection of the dehumidification method, and can be flexibly selected and optimized according to the actual application scenario and requirements.

[0046] The operation of the dehumidification module 40 is intelligently managed by the controller 20. The controller 20 is built-in with a high-precision humidity sensor, which can monitor the change of indoor humidity in real time. When the humidity sensor detects that the indoor humidity is greater than or equal to the humidity threshold preset by the user, the controller 20 will automatically start the dehumidification module 40 to quickly respond to the change of indoor humidity. In some embodiments, the user can set the preset humidity threshold by himself through the control panel or the mobile phone APP according to the indoor environment and personal comfort requirements to achieve personalized humidity control.

[0047] After the dehumidification module 40 is started, it will efficiently remove the moisture in the air by means of condensation or moisture absorption, etc., and continuously reduce the indoor humidity. During the whole dehumidification process, the controller 20 will continuously monitor the indoor humidity to ensure that the humidity can be stably reduced below the preset threshold. When the indoor humidity reaches the set comfortable range, the controller 20 will automatically stop the operation of the dehumidification module 40 to avoid over-dehumidification and maintain the balance of the indoor environment.

[0048] By the operation of the dehumidification module 40, the air purifier can not only effectively control the indoor humidity, but also improve the adsorption efficiency of the carbon dioxide absorption material. In a high-humidity environment, water molecules often compete with carbon dioxide molecules for the adsorption sites on the surface of the absorption material, thereby reducing the adsorption amount of carbon dioxide. And the dehumidification module 40 reduces the competition of water molecules for the adsorption sites by reducing the indoor humidity, so that the absorption material can capture carbon dioxide molecules more efficiently and maintain excellent adsorption performance even in a relatively high-humidity environment.

[0049] The controller is further configured to control the output of a reminder message after the sleep mode of the air purifier is turned on, and the reminder message is used to remind the user to ventilate the indoor environment.

[0050] In the embodiment of the present invention, the controller 20 is not only responsible for controlling the operation of the carbon dioxide absorption module 10 and the dehumidification module 40, but also has the function of outputting a reminder message after the sleep mode of the air purifier is turned on.

[0051] In one example, when the user turns on the sleep mode of the air purifier, the controller 20 can automatically trigger the output of a reminder message. The reminder message can be output in various ways, such as displaying a text reminder on the device's display screen, giving a voice prompt, or sending a notification through a mobile application. The present invention places no restrictions on this.

[0052] In the embodiments of the present invention, the content of the reminder message is mainly to remind the user to ventilate the room, specifically suggesting that the user open the window. The purpose is to prevent the carbon dioxide released during the desorption process of the carbon dioxide absorption module 10 from accumulating indoors.

[0053] In some embodiments, the controller 20 can also automatically determine when to remind the user to ventilate through intelligent algorithms and sensor data, which can not only prevent the carbon dioxide released during the desorption process of the carbon dioxide absorption module 10 from accumulating indoors, but also improve the indoor air quality, optimize the sleep environment, and extend the service life of the air purifier.

[0054] Exemplarily, the embodiments of the present invention also provide a Figure 3 structural schematic diagram of a carbon dioxide absorption module as shown in A metal filter screen 201 for wrapping the absorption material.

[0055] An absorption material 202, the shape of the absorption material is spherical or cylindrical, and the particle size of the absorption material is 2 mm to 4 mm; A loading grid 203.

[0056] In the embodiments of the present invention, the metal filter screen 201 is located on the outermost layer of the carbon dioxide absorption module, used to wrap the absorption material, playing a role in protecting the internal structure and enhancing the overall strength of the module.

[0057] The carbon dioxide absorption material 202 is the core part of the module, made of a high-performance adsorption material, known for its high specific surface area and excellent carbon dioxide adsorption capacity. Its shape is designed to be spherical or cylindrical, and the particle size is controlled between 2 mm and 4 mm. Such a size is beneficial to improving the adsorption efficiency and desorption performance.

[0058] The absorption material 202 is evenly dispersed on the loading grid 203. The design of the grid can ensure good air circulation between the absorption materials, thereby improving the adsorption and desorption efficiency, and at the same time maintaining the stability of the entire structure, preventing the materials from shifting or aggregating during use.

[0059] Electric heating elements (not shown in the figure) evenly distributed on the loading grid 203 are used to heat the absorbent material to help achieve effective desorption of carbon dioxide. A temperature sensor (not shown in the figure) is used to monitor the temperature change during the heating process in real time, ensuring precise control of the heating process, preventing overheating or insufficient temperature, thereby optimizing the desorption effect and extending the service life of the material.

[0060] The air purifier according to the embodiment of the present invention includes a carbon dioxide absorption module and a controller. The controller controls the carbon dioxide absorption module to switch its working state. The carbon dioxide absorption module can efficiently adsorb carbon dioxide in the air and release the adsorbed carbon dioxide during indoor ventilation, which not only effectively improves the carbon dioxide treatment capacity of the air purifier, but also reduces the replacement frequency and usage cost by using renewable absorbent materials.

[0061] Refer to Figure 4 , which shows a flowchart of the steps of a control method for an air purifier provided by an embodiment of the present invention. The air purifier includes a carbon dioxide absorption module and a controller. The method may specifically include the following steps: Step 301, when the indoor is in a ventilation state, control the carbon dioxide absorption module to desorb the adsorbed carbon dioxide; The indoor ventilation state is that there is effective convection between the indoor air and the outdoor air, so that the indoor air can be replaced or updated. In one example, natural ventilation can be used, such as opening doors and windows. In another example, mechanical ventilation can also be achieved, such as through a ventilation fan, a fresh air system, etc.

[0062] In the embodiment of the present invention, the user can manually set the indoor to be in a ventilation state through the control panel of the air purifier or the mobile phone APP, and flexibly control the indoor ventilation and air purification process according to their own needs and preferences. For example, when opening the window for ventilation, manually turn on the ventilation mode.

[0063] In some other embodiments, the air flow situation can also be monitored by a ventilation sensor installed indoors. When the monitored air flow speed reaches a certain threshold or the indoor-outdoor air pressure difference reaches a certain range, it is determined as the ventilation state. In one example, a CO2 sensor is added to monitor the carbon dioxide concentration in the indoor air. When the concentration is lower than 600 ppm, it can be judged that the ventilation is completed.

[0064] The carbon dioxide absorption module, as a key component of the air purifier, usually uses an adsorbent to adsorb carbon dioxide in the indoor air. However, as the adsorption capacity of the adsorbent gradually saturates, a desorption process is required to restore its adsorption capacity. Desorption refers to the process of releasing the adsorbed carbon dioxide from the adsorbent through physical or chemical methods to restore its adsorption capacity, which is crucial for maintaining the long-term effective operation of the air purifier.

[0065] In an embodiment of the present invention, the controller may send a desorption instruction to the carbon dioxide absorption module according to the judgment result of the indoor ventilation state. In one example, when the sensor detects that the indoor is in a ventilation state, the controller automatically triggers the desorption process, so that under the indoor ventilation state, the carbon dioxide absorption module is effectively controlled to perform the desorption operation, thereby restoring the adsorption capacity and improving the air purification efficiency.

[0066] In one embodiment, the carbon dioxide absorption module may include: an absorption material and a heating device. When the indoor is in a ventilation state, the absorption material is heated by the heating device so that the absorption material switches from the adsorption state to the desorption state.

[0067] In an embodiment of the present invention, the heating device is an important component of the carbon dioxide absorption module, which is used to heat the absorption material to switch it from the adsorption state to the desorption state. The heating device may include a heating element and a temperature control unit. By heating the absorption material, its temperature is increased, thereby reducing the adsorption force between the absorption material and carbon dioxide molecules, and enabling the carbon dioxide molecules to desorb from the surface of the absorption material.

[0068] In an embodiment of the present invention, a suitable heating temperature may be set according to the properties of the absorption material and the desorption requirements. In some other embodiments, the heating time may also be set by using the adsorption amount and desorption speed of the absorption material.

[0069] In one example, during the heating process, the temperature of the absorption material may be monitored in real time by a temperature sensor, and the temperature information is fed back to the controller. The controller can adjust the power of the heating device according to the fed-back temperature information to ensure that the temperature of the absorption material is stabilized within the set range.

[0070] For a better understanding of the present invention, reference is made to Figure 5 for illustration. Figure 5 FIG. is a schematic diagram of the steps of a desorption process of a carbon dioxide absorption module provided by an embodiment of the present invention, which may specifically include: When the air purifier detects that the indoor is in a ventilation state, a specific control process may be started to achieve the desorption and purification of the carbon dioxide absorption material. First, the fan of the purifier is turned on and set to run at the highest wind speed, aiming to ensure that during the desorption process, there is a strong enough air flow passing through the absorption material to help the desorbed carbon dioxide quickly discharge from the purifier.

[0071] Next, the heating device will be activated to start heating the absorption material. The heating device can heat the absorption material to a certain temperature through elements such as heating wires and heating sheets to reduce its adsorption force on carbon dioxide and promote the desorption of carbon dioxide. To achieve the best desorption effect and avoid potential damage to the absorption material caused by overheating, the purifier will monitor the temperature of the absorption material in real time through a temperature sensor and feed the data back to the controller. The controller adjusts the power of the heating device according to the feedback information to maintain the heating temperature at about 60°C.

[0072] During the heating process, the purifier will run continuously for 10 minutes to ensure that the carbon dioxide in the absorption material is fully desorbed. After 10 minutes, the controller will automatically turn off the heating device and stop heating. At this time, although the heating process has ended, to ensure that the desorbed carbon dioxide is completely discharged and the purification process is completed, the purifier will continue to run at the highest wind speed for 2 minutes.

[0073] After completing the above steps, the fan of the purifier will be turned off and the current desorption mode will be exited. At this time, the purifier can return to the automatic mode or standby mode and continue to run according to the environmental conditions and user settings. The system can notify the user that the desorption process has been completed through indicator lights, a display screen, or a mobile application.

[0074] Through the above desorption process, the air purifier can, under the condition of indoor ventilation, use heating and ventilation methods to achieve the desorption and purification of the carbon dioxide absorption material.

[0075] It should be noted that in the embodiments of the present invention, the preset wind speed of the fan, the heating temperature and heating time, and the fan operation time in the desorption process can all be selected and set according to actual needs, and the present invention does not limit this.

[0076] Step 302, after the desorption of the carbon dioxide absorption module ends, the carbon dioxide in the air inhaled by the air purifier is adsorbed through the carbon dioxide absorption module.

[0077] The carbon dioxide absorption module can use an adsorbent to adsorb carbon dioxide in the air. The adsorbent has a large number of micropores and surface active sites, which can adsorb carbon dioxide molecules in the air. In the embodiments of the present invention, the air purifier inhales indoor air into the device through its built-in fan. After the air passes through a pre-filter to remove large dust particles and impurities, it enters the carbon dioxide absorption module. The carbon dioxide molecules in the air bind to the active sites on the surface of the adsorbent and are adsorbed into the micropores of the adsorbent. After the air is processed by the carbon dioxide absorption module, the carbon dioxide concentration is significantly reduced, and then it is discharged through the air outlet of the air purifier to improve the indoor air quality.

[0078] In the method of the embodiment of the present invention, the control system of the air purifier first confirms that the desorption process has ended, and instructs the air purifier to switch to the adsorption mode. The fan of the air purifier starts to work and inhales indoor air at a set wind speed. The inhaled air first passes through a pre-filter to remove larger particulate matters, such as dust and pollen, to protect the subsequent carbon dioxide absorption material from physical damage.

[0079] In the embodiment of the present invention, after it is judged that the desorption process has ended, the controller can send an adsorption instruction to the carbon dioxide absorption module to start the adsorption process, effectively adsorb the carbon dioxide in the inhaled air, thereby reducing the indoor carbon dioxide concentration and improving the indoor air quality.

[0080] In some embodiments, the end of the desorption of the carbon dioxide absorption module can also be judged based on the following, and the present invention does not limit this: 1) Time judgment: Judge whether the desorption has ended according to the preset desorption time. In one example, if temperature-rising desorption is adopted and the preset time is 30 minutes, then the desorption process is considered to have ended after 30 minutes.

[0081] 2) Sensor monitoring: Monitor the carbon dioxide concentration through a gas sensor installed near the carbon dioxide absorption module. When the sensor detects that the carbon dioxide concentration no longer changes or is lower than a certain threshold, it is judged that the desorption process has ended.

[0082] 3) Temperature change: When temperature-rising desorption is adopted, when the temperature returns to the initial state, it can be judged that the desorption process has ended.

[0083] After the pre-filtered air enters the carbon dioxide absorption module, the carbon dioxide molecules in the air are adsorbed by the absorption material. After the air is processed by the carbon dioxide absorption module, the carbon dioxide concentration is significantly reduced, and then it is discharged through the air outlet of the air purifier. Thus, the carbon dioxide level in the indoor air can be effectively controlled, and the indoor air quality can be improved.

[0084] In some embodiments, after the heating of the absorption material ends, the blower can also blow air at a preset wind speed.

[0085] Even after the heating device is turned off, there may still be some carbon dioxide remaining in the absorption material. Continuing to operate the blower can completely remove the remaining carbon dioxide from the absorption material. At the same time, the heated adsorption material needs time to cool down to room temperature. The continuous operation of the blower can also accelerate this process, enabling the material to return to a state suitable for re-adsorbing carbon dioxide more quickly.

[0086] It should be noted that in actual operation, the preset wind speed of the blower may be fixed or variable, specifically depending on the design of the air purifier and the capabilities of the control system, and the present invention does not limit this.

[0087] In some embodiments, when the indoor humidity is greater than or equal to a preset humidity threshold, the dehumidification module can also be controlled to dehumidify until the indoor humidity is less than the preset humidity threshold.

[0088] In the embodiments of the present invention, a humidity sensor is installed inside the air purifier device for real-time monitoring of the indoor humidity level. The humidity sensor can be a capacitive, resistive or other type of humidity sensor, capable of accurately measuring the water vapor content in the air.

[0089] In an environment with high humidity, water molecules in the air will compete with carbon dioxide molecules for adsorption on the surface of the adsorption material. Due to the polarity and relatively large size of water molecules, water molecules are often more easily captured by the adsorption material than carbon dioxide molecules. This competitive relationship causes the adsorption sites for carbon dioxide to be occupied by water molecules, thereby reducing the absorption efficiency of the adsorption material for carbon dioxide. Therefore, by reducing the environmental humidity, the competitive adsorption between water molecules and carbon dioxide can be reduced, thereby effectively improving the adsorption effect of the material on carbon dioxide.

[0090] In the embodiments of the present invention, when the indoor humidity reaches or exceeds the preset humidity threshold, the control system can activate the dehumidification module to perform dehumidification treatment.

[0091] The dehumidification module can condense and discharge water molecules in the air through technologies such as cooling dehumidification, rotary dehumidification or chemical dehumidification, thereby reducing the indoor humidity.

[0092] During the dehumidification process, the humidity sensor can real-time monitor the indoor humidity and feedback it to the control system.

[0093] The control system can automatically adjust the working state of the dehumidification module according to the real-time monitored humidity data until the indoor humidity drops below the preset threshold.

[0094] When the indoor humidity decreases, the water molecules on the surface of the adsorption material decrease, providing more adsorption sites for carbon dioxide molecules, significantly improving the absorption efficiency of carbon dioxide, and enabling the purifier to more effectively remove carbon dioxide in the indoor air and improve the indoor air quality.

[0095] In some embodiments, after the sleep mode of the air purifier is turned on, a reminder message can also be output, and the reminder message is used to remind the user to ventilate the room.

[0096] In the method of the embodiments of the present invention, after the carbon dioxide absorption module in the air purifier absorbs a certain amount of carbon dioxide, it needs to be desorbed to restore its absorption capacity. If the carbon dioxide released during the desorption process is not discharged in time, it may accumulate indoors and affect the air quality.

[0097] To ensure that the desorption process is completed quickly and to prevent the desorbed carbon dioxide from accumulating indoors, the fan of the air purifier needs to operate at a relatively high speed to quickly discharge the released carbon dioxide outdoors.

[0098] In sleep mode, reminding the user to ventilate the room can accelerate the discharge of carbon dioxide, introduce fresh air, further improve air quality, and at the same time help speed up the desorption and regeneration process of the absorption module.

[0099] In one example, the air purifier can automatically output a reminder message when entering sleep mode. This can be achieved through the display screen, indicator light, sound prompt on the device or through the connected smartphone APP.

[0100] In another example, the control system of the air purifier can further dynamically adjust the ventilation reminder in sleep mode according to the real-time monitored indoor carbon dioxide concentration and humidity level. For example, if the detected carbon dioxide concentration is close to or exceeds the safety threshold, a ventilation reminder can be issued immediately.

[0101] By outputting a reminder message in sleep mode to remind the user to ventilate the room, the air purifier can not only provide efficient air purification without disturbing the user's sleep, but also ensure the rapid completion of the desorption process and prevent the accumulation of carbon dioxide indoors.

[0102] Exemplarily, as Figure 6 The flowchart of the steps of a method for controlling the sleep mode of an air purifier provided by an embodiment of the present invention shown: First, the air purifier enters the startup stage of sleep mode, which is to operate at a lower noise and energy consumption at night or when the user is resting, while maintaining the air purification function. Then, the device will prompt the user to open the door or window and perform some preparatory work, which helps to ensure that there is proper air circulation in the room before starting the purification process.

[0103] Next, the air purifier starts the desorption mode of the carbon dioxide absorption material to release the carbon dioxide that has been adsorbed in the material and prepare the material to adsorb new carbon dioxide again. Then, the system will prompt the user to close the doors and windows to ensure that the purifier can work efficiently in a closed environment in sleep mode without being affected by the outdoor air quality.

[0104] The fan of the air purifier starts to operate at the set wind speed gear in sleep mode. The low wind speed operation mode can ensure air circulation and will not disturb the user's sleep.

[0105] At the same time, the humidity sensor starts to detect the indoor humidity and feedback the data to the control system to monitor whether the indoor environment is too humid, because high humidity may affect the carbon dioxide absorption effect.

[0106] The control system determines whether the indoor humidity is less than 50% based on the data from the humidity sensor. This is the preset humidity threshold used to decide whether to activate the dehumidification module.

[0107] If the humidity is greater than or equal to this threshold, the control system will activate the dehumidification module to start dehumidifying in order to reduce the indoor humidity. Once the indoor humidity is less than 50%, the dehumidification module will be turned off, and the air purifier will continue to operate at the wind speed gear of the sleep mode to maintain a comfortable indoor environment.

[0108] During the operation of the sleep mode, the user can adjust the settings and exit the sleep mode at any time through the operation interface or remote control of the device.

[0109] Once the user adjusts and exits the sleep mode, the device will prompt the user to open the door or window for indoor ventilation, which helps to quickly blow away the desorbed carbon dioxide and ensures the rapid completion of the desorption process of the carbon dioxide absorption material.

[0110] Subsequently, the air purifier will start the desorption mode of the carbon dioxide absorption material again to restore the adsorption capacity of the material and prepare for a new round of carbon dioxide adsorption.

[0111] Finally, the device completely exits the sleep mode and resumes the normal operating state, continuing to monitor and adjust the indoor air quality.

[0112] Through this process, the air purifier can effectively purify the air and adjust the humidity in the sleep mode, and at the same time remind the user to ventilate at the appropriate time to optimize the carbon dioxide absorption effect and improve the indoor air quality.

[0113] It should be noted that in the embodiment of the present invention, the environmental humidity threshold in the sleep mode control process can be selected and set according to actual needs, and the present invention does not limit this.

[0114] In the method of the embodiment of the present invention, the activation time of the desorption mode of the carbon dioxide absorption module can be set by the user according to the actual situation and personalized needs, and the present invention does not limit this.

[0115] The air purifier provided by the embodiment of the present invention includes a carbon dioxide absorption module and a controller. The controller controls the carbon dioxide absorption module to switch the working state. The carbon dioxide absorption module can efficiently adsorb carbon dioxide in the air and release the adsorbed carbon dioxide during indoor ventilation, which not only effectively improves the carbon dioxide treatment capacity of the air purifier, but also reduces the replacement frequency and the use cost by using renewable adsorption materials.

[0116] It should be noted that, for method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the embodiments of the present invention are not limited by the described order of actions, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0117] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0118] The above-described embodiments are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

[0119] Although the preferred embodiments of the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

[0120] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the element.

[0121] The above has introduced in detail an air purifier and a control method thereof provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An air purifier, characterized in that, Comprising: A carbon dioxide absorption module, configured to adsorb carbon dioxide in the air inhaled by the air purifier, or desorb the adsorbed carbon dioxide; The carbon dioxide absorption module includes: an absorption material, a heating device, a metal filter screen, and a loading grid; The absorption material is in a spherical or cylindrical shape and is evenly dispersed in the loading grid; the absorption material is used to adsorb carbon dioxide in the inhaled air in the adsorption state, or desorb the adsorbed carbon dioxide in the desorption state; The metal filter screen is used to wrap the absorption material and the loading grid; The heating device includes electric heating elements evenly distributed on the loading grid, and is used to heat the absorption material so that the absorption material switches from the adsorption state to the desorption state; A controller, configured to control the heating device to heat when the room is in a ventilation state, so that the carbon dioxide absorption module desorbs the adsorbed carbon dioxide; after the desorption of the carbon dioxide absorption module ends, control the carbon dioxide absorption module to adsorb carbon dioxide in the air inhaled by the air purifier.

2. The air purifier according to claim 1, wherein The air purifier further includes a fan; The controller is further configured to control the fan to blow air at a preset wind speed after the heating of the absorption material ends.

3. The air purifier according to claim 1, wherein The air purifier further includes a dehumidification module; The controller is further configured to control the dehumidification module to dehumidify when the indoor humidity is greater than or equal to a preset humidity threshold until the indoor humidity is less than the preset humidity threshold.

4. The air purifier according to claim 1, wherein The controller is further configured to control the output of a reminder message after the sleep mode of the air purifier is turned on, and the reminder message is used to remind the user to ventilate the room.

5. The air purifier according to claim 1, wherein The particle size of the absorption material is 2 mm to 4 mm.

6. A control method for an air purifier, characterized in that, Applied to the air purifier according to any one of claims 1-5; the method includes: When the room is in a ventilation state, control the heating device to heat so that the carbon dioxide absorption module desorbs the adsorbed carbon dioxide; After the desorption of the carbon dioxide absorption module ends, adsorb carbon dioxide in the air inhaled by the air purifier through the carbon dioxide absorption module.

7. The control method of the air purifier according to claim 6, characterized in that, The air purifier further includes a fan; the method further includes: After the heating of the absorption material ends, the fan blows air at a preset wind speed.

8. The control method of the air purifier according to claim 6, wherein The air purifier further includes a dehumidification module, and the method further includes: When the indoor humidity is greater than or equal to a preset humidity threshold, control the dehumidification module to dehumidify until the indoor humidity is less than the preset humidity threshold.

9. The control method of the air purifier according to claim 6, characterized in that, Further comprising: After the sleep mode of the air purifier is turned on, output a reminder message, and the reminder message is used to remind the user to ventilate the room.

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