Air purification method and device

Abstract

The invention belongs to the field of air purification, and discloses an air purification method and device. The method comprises the steps that air purification equipment sends an air detection request to air detection equipment and sends a rotating speed detection request to a range hood, and an information receiving time window with preset duration is opened; after the air detection equipment receives the air detection request, the air pollution degree is detected, a current air detection value is obtained, and the current air detection value is sent to the air purification equipment in an information receiving time window; the range hood detects the current rotating speed of a range hood motor and sends the current rotating speed of the range hood motor to the air purification equipment within the information receiving time window; and the air purification equipment determines the target motor rotating speed according to the current air detection value and / or the current range hood motor rotating speed, and the air purification equipment is controlled to operate according to the target motor rotating speed. By the adoption of the air purifier, indoor air can be refreshed, and indoor air purification is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and in particular to an air purification method and device. Background Art

[0002] Indoor air quality has attracted more and more attention. The pollution of indoor air quality in the home mainly comes from the fumes generated by cooking in the kitchen. Although the range hood can absorb the fumes during cooking to prevent the fumes from escaping, the method of extracting air and exhausting it through the range hood can easily cause a negative pressure environment indoors, and the exhaust effect of the fumes is not thorough. When the range hood is stopped, the fumes that are not exhausted in time will spread back into the room and cause secondary pollution. Therefore, a method of indoor air purification is urgently needed. Summary of the invention

[0003] Based on this, it is necessary to provide an air purification method and device to address the above technical issues.

[0004] In a first aspect, a method for air purification is provided, the method being applied to an air purification system, the air purification system comprising an air purification device, an air detection device and a range hood, the air purification device being installed in a suspended ceiling indoors, the air outlet of the air purification device being downwardly parallel to the bottom of the suspended ceiling, an air inlet pipe being arranged above the air purification device, the air inlet pipe extending to the outdoors, the air purification device being connected to the air detection device and the range hood respectively, the method comprising:

[0005] The air purification device sends an air detection request to the air detection device, sends a speed detection request to the range hood, and opens a time window for receiving information of a preset duration;

[0006] After receiving the air detection request, the air detection device detects the air pollution level, obtains the current air detection value, and sends the current air detection value to the air purification device within the information receiving time window;

[0007] The range hood detects the current motor speed of the range hood and sends the current motor speed of the range hood to the air purification device within the information receiving time window;

[0008] The air purification device determines the target motor speed of its own motor based on the current air detection value and / or the current range hood motor speed, and controls the motor of the air purification device to operate according to the target motor speed, so that fresh air from outdoor enters the air purification device from the air inlet pipe and is discharged into the room from the air outlet of the air purification device.

[0009] As an optional implementation, when the air purification device determines the target motor speed of its own motor based on the current air detection value, the air purification device queries the target motor speed of the air purification device corresponding to the current air detection value in the pre-stored correspondence between the air detection value and the motor speed of the air purification device.

[0010] As an optional implementation, when the air purification device determines the target motor speed of its own motor based on the current range hood motor speed, the air purification device queries the target motor speed of the air purification device corresponding to the current range hood motor speed in the pre-stored correspondence between the range hood motor speed and the motor speed of the air purification device.

[0011] As an optional implementation, when the air purification device determines the target motor speed of its own motor according to the current air detection value and the current range hood motor speed, if the current air detection value is greater than or equal to the preset air detection value, and the current range hood motor speed is greater than or equal to the preset range hood motor speed, the air purification device determines the first preset motor speed as the target motor speed;

[0012] If the current air detection value is less than the preset air detection value, and the current range hood motor speed is greater than or equal to the preset range hood motor speed, the target motor speed of the air purification device is zero, and a gear downshift instruction is sent to the range hood;

[0013] If the current air detection value is greater than or equal to the preset air detection value, and the current range hood motor speed is less than the preset range hood motor speed, the target motor speed of the air purification device is zero, and a gear-up instruction is sent to the range hood;

[0014] If the current air detection value is less than the preset air detection value, and the current range hood motor speed is less than the preset range hood motor speed, the target motor speed of the air purification device is zero, and a shutdown command is sent to the range hood.

[0015] As an optional implementation, after sending the gear-up instruction to the range hood, the method includes:

[0016] After a preset time, the air purification device sends an air detection request to the air detection device and opens a time window for receiving information for a preset time;

[0017] After receiving the air detection request, the air detection device re-detects the air pollution level to obtain a re-detected air detection value;

[0018] If the re-detected air detection value is less than the current air detection value, the range hood is maintained in operation according to the increased gear; if the re-detected air detection value is greater than or equal to the current air detection value, the air purification device determines the second preset motor speed as the target motor speed; wherein the first preset motor speed is greater than the second preset motor speed.

[0019] As an optional implementation, the air outlet of the air purification device is provided with a blowing blade with an adjustable air outlet angle, and the air purification device is respectively connected to a plurality of air detection devices installed at different positions indoors, and the method further includes:

[0020] The air purification device sequentially communicates with a plurality of air detection devices to obtain a plurality of air detection values ​​and position information corresponding to each air detection value;

[0021] The air purification device determines a maximum air detection value from the multiple air detection values, and adjusts the air outlet angle of the blowing blade to the azimuth information corresponding to the maximum air detection value to discharge air.

[0022] As an optional implementation, the air purification device communicates with multiple air detection devices in sequence to obtain multiple air detection values ​​and position information corresponding to each air detection value, including:

[0023] The air purification device sends an air detection request to any air detection device and opens a receiving information time window of a preset duration. After receiving the air detection value of the air detection device and the direction information corresponding to the air detection value, or after the receiving information time window of a preset duration ends, the air detection request is sent to the next air detection device, and the step of opening the receiving information time window of a preset duration is performed until communication with the multiple air detection devices is completed and multiple air detection values ​​and the direction information corresponding to each air detection value are obtained.

[0024] As an optional implementation manner, the air detection request includes a pairing MAC; and the method further includes:

[0025] For each air detection device, after receiving the air detection request, it identifies whether the paired MAC is its own address information. If so, it detects the degree of air pollution, obtains the air detection value, and sends the air detection value and the position information corresponding to the air detection value to the air purification device within the information receiving time window. Otherwise, it does not respond.

[0026] In a second aspect, an air purification device is provided, the device is applied to an air purification system, the air purification system comprises an air purification device, an air detection device and a range hood, the air purification device is installed in a suspended ceiling indoors, the air outlet of the air purification device is downwardly parallel to the bottom of the suspended ceiling, an air inlet pipe is arranged above the air purification device, the air inlet pipe extends to the outdoors, the air purification device is respectively connected to the air detection device and the range hood, the device comprises:

[0027] A first request module, configured for the air purification device to send an air detection request to the air detection device, and to send a speed detection request to the range hood, and to open a time window for receiving information of a preset duration;

[0028] A first detection module, configured to detect the degree of air pollution after the air detection device receives the air detection request, obtain a current air detection value, and send the current air detection value to the air purification device within the information receiving time window;

[0029] A second detection module is used for the range hood to detect the current motor speed of the range hood and send the current motor speed of the range hood to the air purification device within the information receiving time window;

[0030] The first determination module is used for the air purification device to determine the target motor speed of its own motor according to the current air detection value and / or the current range hood motor speed, and to control the motor of the air purification device to operate according to the target motor speed, so that outdoor fresh air enters the air purification device from the air inlet pipe and is discharged into the room from the air outlet of the air purification device.

[0031] As an optional implementation, when the air purification device determines the target motor speed of its own motor based on the current air detection value, the air purification device queries the target motor speed of the air purification device corresponding to the current air detection value in the pre-stored correspondence between the air detection value and the motor speed of the air purification device.

[0032] As an optional implementation, when the air purification device determines the target motor speed of its own motor based on the current range hood motor speed, the air purification device queries the target motor speed of the air purification device corresponding to the current range hood motor speed in the pre-stored correspondence between the range hood motor speed and the motor speed of the air purification device.

[0033] As an optional implementation, when the air purification device determines the target motor speed of its own motor according to the current air detection value and the current range hood motor speed, if the current air detection value is greater than or equal to the preset air detection value, and the current range hood motor speed is greater than or equal to the preset range hood motor speed, the air purification device determines the first preset motor speed as the target motor speed;

[0034] If the current air detection value is less than the preset air detection value, and the current range hood motor speed is greater than or equal to the preset range hood motor speed, the target motor speed of the air purification device is zero, and a gear downshift instruction is sent to the range hood;

[0035] If the current air detection value is greater than or equal to the preset air detection value, and the current range hood motor speed is less than the preset range hood motor speed, the target motor speed of the air purification device is zero, and a gear-up instruction is sent to the range hood;

[0036] If the current air detection value is less than the preset air detection value, and the current range hood motor speed is less than the preset range hood motor speed, the target motor speed of the air purification device is zero, and a shutdown command is sent to the range hood.

[0037] As an optional implementation, after sending the gear-up instruction to the range hood, the device further includes:

[0038] A second request module, configured to cause the air purification device to send an air detection request to the air detection device after a preset time period, and to open a time window for receiving information of a preset time period;

[0039] A third detection module, configured for the air detection device to re-detect the air pollution level after receiving the air detection request, and obtain a re-detected air detection value;

[0040] The second determination module is used to maintain the operation of the range hood according to the increased gear if the re-detected air detection value is less than the current air detection value, and if the re-detected air detection value is greater than or equal to the current air detection value, the air purification device determines the second preset motor speed as the target motor speed; wherein the first preset motor speed is greater than the second preset motor speed.

[0041] As an optional implementation, the device further includes:

[0042] A communication module, used for the air purification device to communicate with multiple air detection devices in sequence to obtain multiple air detection values ​​and position information corresponding to each air detection value;

[0043] The third determination module is used for the air purification device to determine the maximum air detection value from the multiple air detection values, and adjust the air outlet angle of the blowing blade to the azimuth information corresponding to the maximum air detection value to discharge air.

[0044] As an optional implementation manner, the communication module is specifically used to:

[0045] The air purification device sends an air detection request to any air detection device and opens a receiving information time window of a preset duration. After receiving the air detection value of the air detection device and the azimuth information corresponding to the air detection value, or after the receiving information time window of a preset duration ends, the air detection request is sent to the next air detection device and the step of opening the receiving information time window of a preset duration is performed until communication with the multiple air detection devices is completed and multiple air detection values ​​and the azimuth information corresponding to each air detection value are obtained.

[0046] As an optional implementation manner, the air detection request includes a pairing MAC; the communication module is specifically used to:

[0047] For each air detection device, after receiving the air detection request, it identifies whether the paired MAC is its own address information. If so, it detects the degree of air pollution, obtains the air detection value, and sends the air detection value and the position information corresponding to the air detection value to the air purification device within the information receiving time window. Otherwise, it does not respond.

[0048] In a third aspect, an air purification system is provided, the air purification system comprising: the air purification method as described in the first aspect and the air purification device as described in the second aspect.

[0049] The present application provides an air purification method, and the technical solution provided by the embodiment of the present application brings at least the following beneficial effects: by installing air purification equipment and air detection equipment indoors, the air purification equipment is linked with the air detection equipment and the range hood respectively to exchange data, and the amount of outdoor air introduced and / or the air detection result (separate detection device, or existing detection function on the range hood) are adaptively adjusted according to the rotation speed of the range hood, the motor speed of the air purification equipment is determined and operated, and indoor air is renewed to achieve the purpose of indoor and outdoor air pressure balance, air purification, and complete exhaust of indoor exhaust gas. Thus, linkage between equipment is realized, and kitchen air purification is realized more efficiently.

[0050] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0052] Figure 1 A schematic diagram of the structure of an air purification system provided in an embodiment of the present application;

[0053] Figure 2 A flow chart of an air purification method provided in an embodiment of the present application;

[0054] Figure 3 A flowchart of an example of an air purification method provided in an embodiment of the present application;

[0055] Figure 4 A schematic diagram of the structure of an air purification device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0057] The air purification method provided in the embodiment of the present application can be applied to an air purification system. Figure 1 As shown, the air purification system includes an air purification device 101, an air detection device 102 and a range hood 103, and the air purification device 101 is connected to the air detection device 102 and the range hood 103 respectively. The air purification device 101 is installed in the indoor ceiling, the air outlet of the air purification device 101 is downward and parallel to the bottom of the ceiling, and an air inlet pipe is arranged above the air purification device 101, and the air inlet pipe extends to the outdoors. The air detection device 102 can be arranged on the stove.

[0058] The air purification device 101 is used to send an air detection request to the air detection device 102 and open a preset time window for receiving information. Send a speed detection request to the range hood 103 and open a preset time window for receiving information. According to the current air detection value and / or the current range hood motor speed, the target motor speed of its own motor is determined, and the motor of the air purification device 101 is controlled to run at the target motor speed, so that fresh air from the outside enters the air purification device 101 from the air inlet pipe of the air purification device 101, and is discharged into the room from the air outlet of the air purification device 101.

[0059] The air detection device 102 is used to detect the air pollution level after receiving the air detection request, obtain the current air detection value, and send the current air detection value to the air purification device 101 within the information receiving time window.

[0060] The range hood 103 is used to detect the current motor speed of the range hood and send the current motor speed of the range hood to the air purification device 101 within the information receiving time window.

[0061] The following will describe in detail an air purification method provided by an embodiment of the present application in combination with a specific implementation method. Figure 2 A flow chart of an air purification method provided in an embodiment of the present application, such as Figure 2 As shown, the specific steps are as follows:

[0062] Step 201: The air purification device sends an air detection request to the air detection device, sends a speed detection request to the range hood, and opens a preset time window for receiving information.

[0063] In practice, people are paying more and more attention to indoor air quality. The pollution of indoor air quality in the home mainly comes from the fumes generated by cooking in the kitchen. Although the range hood can absorb the fumes in the cooking process to prevent the fumes from escaping, it is easy to cause a negative pressure environment indoors by extracting air from the range hood, and the exhaust effect of the fumes is not thorough. When the range hood is shut down, the fumes that are not discharged in time will diffuse back into the room and cause secondary pollution. Therefore, fresh air from the outside can be introduced to the room, and the balance of internal and external air pressure is conducive to the exhaust of fumes. Air purification equipment and air detection equipment are installed indoors. When the air detection equipment detects that the indoor air pollution level is high, the air purification equipment is used to replace the air to achieve indoor air purification. Therefore, the air purification equipment sends an air detection request to the air detection equipment and opens a preset time window for receiving information. In the subsequent steps, the air purification equipment can purify the air according to the air detection value fed back by the air detection equipment. The range hood absorbs the fumes in the cooking process and exhausts them. The air exhaust method easily causes a negative pressure environment indoors. Therefore, the motor speed of the air purification device can also be determined according to the motor speed of the range hood, so as to match the indoor exhaust volume with the intake volume and achieve the balance of internal and external air pressure. Therefore, the air purification device can also be linked with the range hood. The air purification device sends a speed detection request to the range hood and opens a preset time window for receiving information.

[0064] Step 202: After receiving the air detection request, the air detection device detects the air pollution level, obtains the current air detection value, and sends the current air detection value to the air purification device within the information receiving time window.

[0065] In implementation, after receiving the air detection request, the air detection device detects the degree of indoor air pollution, obtains the current air detection value, and sends the current air detection value to the air purification device within the receiving information time window of the air purification device. Among them, the air detection device can detect PM2.5 and VOC (volatile organic compounds) in the indoor air. The subsequent steps can determine the speed of the motor of the air purification device according to the current air detection value, so that the air purification device can operate to introduce fresh air from the outside to the room, and the balance of internal and external air pressure is conducive to the discharge of oil smoke.

[0066] Step 203, the range hood detects the current motor speed of the range hood and sends the current motor speed of the range hood to the air purification device within the information receiving time window.

[0067] In the implementation, after receiving the speed detection request, the range hood detects the current motor speed of the range hood and sends the current motor speed of the range hood to the air purification device within the receiving information time window. In the subsequent steps, the motor speed of the air purification device is determined according to the current motor speed of the range hood to achieve the matching of indoor exhaust volume and intake volume.

[0068] In step 204, the air purification device determines the target motor speed of its own motor according to the current air detection value and / or the current range hood motor speed, and controls the motor of the air purification device to run according to the target motor speed, so that outdoor fresh air enters the air purification device from the air inlet pipe of the air purification device and is discharged into the room from the air outlet of the air purification device.

[0069] In implementation, when the air purification device is linked with the range hood, and the range hood does not have an air detection device. Then, when determining the target motor speed of the air purification device, it is necessary to match the amount of indoor air discharged by the range hood with the amount of air introduced into the room by the air purification device. At this time, the target motor speed can be determined by the current motor speed of the range hood. When the air purification device is linked with the range hood with air detection function, or is linked with the air detection device alone, the amount of outdoor air introduced by the air purification device needs to dilute the polluted air in the room. At this time, the target motor speed can be determined by the air detection value corresponding to the degree of air pollution. When the air purification device is linked with both the range hood and the air detection device, the target motor speed of the motor of the air purification device can be determined based on both the current air detection value and the current motor speed of the range hood. Therefore, the air purification device determines the target motor speed of its own motor according to the current air detection value and / or the current motor speed of the range hood, and controls the motor of the air purification device to run according to the target motor speed, so that the fresh air outside enters the air purification device from the air inlet pipe of the air purification device, and is discharged into the room from the air outlet of the air purification device.

[0070] Furthermore, when the air purification device determines the target motor speed of its own motor based on the current air detection value, the air purification device queries the target motor speed of the air purification device corresponding to the current air detection value in the pre-stored correspondence between the air detection value and the motor speed of the air purification device.

[0071] In implementation, when the air purification device determines the target motor speed of its own motor according to the current air detection value, that is, when the air purification device is linked with a range hood with an air detection function, or is linked with an air detection device alone, the amount of outdoor air introduced by the air purification device needs to dilute the indoor polluted air. The correspondence between the air detection value and the motor speed of the air purification device is pre-stored, so that the motor speed of the air purification device corresponding to different air detection values ​​can serve the purpose of diluting the indoor polluted air. After the range hood or air detection device sends the detected current air detection value to the air purification device through wireless communication, the air purification device queries the target motor speed of the air purification device corresponding to the current air detection value in the correspondence between the pre-stored air detection value and the motor speed of the air purification device. In this way, the intake speed of the air purification device corresponding to the appropriate air detection value has been calibrated, and then the air purification device dynamically adjusts its own motor speed to the motor speed of the air purification device through a software table lookup method, which can achieve the matching of the kitchen exhaust volume and the air detection value.

[0072] Furthermore, when the air purification device determines the target motor speed of its own motor based on the current range hood motor speed, the air purification device queries the target motor speed of the air purification device corresponding to the current range hood motor speed in the pre-stored correspondence between the range hood motor speed and the motor speed of the air purification device.

[0073] In implementation, when the air purification device determines the target motor speed of its own motor according to the current motor speed of the range hood, that is, when the air purification device is linked with the range hood, and the range hood does not have an air detection device. Then, when determining the target motor speed of the air purification device, it is necessary to match the amount of indoor air discharged by the range hood with the amount of air introduced into the room by the air purification device. The correspondence between the motor speed of the range hood and the motor speed of the air purification device is pre-stored, and according to the current motor speed of the range hood sent by the range hood via wireless communication, the air purification device queries the target motor speed of the air purification device corresponding to the current motor speed of the range hood in the correspondence between the motor speed of the range hood and the motor speed of the air purification device. In this way, the range hood has been calibrated to correspond to the appropriate intake speed of the air evolution device at a specific exhaust speed, and then the air purification device dynamically adjusts its own motor speed to the target motor speed through a software table lookup method, which can achieve the matching of the kitchen exhaust volume and the intake volume.

[0074] Furthermore, the specific steps of determining the target motor speed of the motor according to the current air detection value and the current motor speed of the range hood are as follows:

[0075] Step one, when the air purification device determines the target motor speed of its own motor based on the current air detection value and the current range hood motor speed, if the current air detection value is greater than or equal to the preset air detection value, and the current range hood motor speed is greater than or equal to the preset range hood motor speed, the air purification device determines the first preset motor speed as the target motor speed.

[0076] In implementation, when the air purification device determines the target motor speed of its own motor based on the current air detection value and the current range hood motor speed, the current air detection value is compared with the preset air detection value. If the current air detection value is greater than or equal to the preset air detection value, it indicates that the current indoor air pollution level is high. The current range hood motor speed is compared with the preset range hood motor speed. If the current range hood motor speed is greater than or equal to the preset range hood motor speed, it indicates that the current gear of the range hood is very high, but the exhaust capacity is not enough to reduce the polluted air in the room. Then, at this time, the air purification device needs to increase its own speed to increase the amount of outdoor air discharged and quickly replace the indoor air. Therefore, if the current air detection value is greater than or equal to the preset air detection value, and the current range hood motor speed is greater than or equal to the preset range hood motor speed, the air purification device determines the first preset motor speed as the target motor speed.

[0077] Step 2: If the current air detection value is less than the preset air detection value, and the current range hood motor speed is greater than or equal to the preset range hood motor speed, the target motor speed of the air purification device is zero, and a gear down adjustment instruction is sent to the range hood.

[0078] In implementation, the current air detection value is compared with the preset air detection value. If the current air detection value is less than the preset air detection value, it indicates that the current indoor air pollution level is low. The current range hood motor speed is compared with the preset range hood motor speed. If the current range hood motor speed is greater than or equal to the preset range hood motor speed, it indicates that the suction gear of the current range hood is larger. Then, the range hood speed is high and the air pollution level is low, indicating that the exhaust volume of the range hood is excessive at this time. At this time, there is no need to turn on the air purification equipment, and the suction gear of the range hood can also be reduced or turned off to reduce the noise of the motor operation. Therefore, if the current air detection value is less than the preset air detection value, and the current range hood motor speed is greater than or equal to the preset range hood motor speed, the target motor speed of the air purification equipment is zero, and a gear adjustment instruction is sent to the range hood.

[0079] Step three, if the current air detection value is greater than or equal to the preset air detection value, and the current range hood motor speed is less than the preset range hood motor speed, the target motor speed of the air purification device is zero, and a gear increase instruction is sent to the range hood.

[0080] During implementation, the current air detection value is compared with the preset air detection value. If the current air detection value is greater than the preset air detection value, it indicates that the current indoor air pollution level is high. The current range hood motor speed is compared with the preset range hood motor speed. If the current range hood motor speed is less than the preset range hood motor speed, it indicates that the current range hood suction gear is relatively low. The range hood speed is low (or shut down) and the air pollution level is high, indicating that the gear of the range hood is not suitable to reduce indoor pollution. In order to reduce indoor noise, the air purification device does not start its own motor first. The air purification device prioritizes speeding up the exhaust of indoor air by sending a command to adjust the range hood to a high suction gear.

[0081] Furthermore, after executing step three, it is necessary to determine whether the indoor air pollution level has decreased. If it has decreased, continue to maintain it. If the air pollution level has not decreased but increased, it is necessary to turn on the air purification equipment for air purification. The specific process is as follows:

[0082] Step a: After a preset time, the air purification device sends an air detection request to the air detection device and opens a time window for receiving information with a preset time.

[0083] In implementation, after a period of time, the air pollution level is re-detected to determine whether the air pollution level has decreased. Therefore, the air purification device sends an air detection request to the air detection device and opens a preset time window for receiving information.

[0084] Step b: after receiving the air detection request, the air detection device re-detects the air pollution level to obtain a re-detected air detection value.

[0085] In implementation, after receiving the air detection request, the air detection device re-detects the air pollution level and obtains the re-detected air detection value, so that the air purification device can determine whether the indoor air pollution has decreased after a preset period of time.

[0086] Step c, if the re-detected air detection value is less than the current air detection value, the range hood is maintained in operation according to the increased gear; if the re-detected air detection value is greater than or equal to the current air detection value, the air purification device determines the second preset motor speed as the target motor speed; wherein the first preset motor speed is greater than the second preset motor speed.

[0087] In implementation, after a period of time, the air pollution level is re-detected. When the air pollution level is reduced, the current state is maintained until the air pollution is reduced to a normal level. When the air pollution level has not been reduced, the air purification device turns on its own motor to promote indoor air replacement until the air pollution is reduced to a normal level. Therefore, if the re-detected air detection value is less than the current air detection value, the range hood is maintained in operation according to the increased gear. If the re-detected air detection value is greater than or equal to the current air detection value, the air purification device determines the second preset motor speed as the target motor speed; wherein the first preset motor speed is greater than the second preset motor speed.

[0088] Step 4: If the current air detection value is less than the preset air detection value, and the current range hood motor speed is less than the preset range hood motor speed, the target motor speed of the air purification device is zero, and a shutdown command is sent to the range hood.

[0089] During implementation, the current air detection value is compared with the preset air detection value. If the current air detection value is less than the preset air detection value, it indicates that the current indoor air pollution level is low. The current range hood motor speed is compared with the preset range hood motor speed. If the current range hood motor speed is less than the preset range hood motor speed, it indicates that the current range hood suction gear is low. The range hood speed is low (or shut down) and the air pollution level is low, indicating that the indoor air quality is good at this time and there is no need to turn on the air intake or exhaust. Therefore, the air purification device is shut down, and at the same time, the air purification device issues an instruction to shut down the range hood. Therefore, if the current air detection value is less than the preset air detection value, and the current range hood motor speed is less than the preset range hood motor speed, the target motor speed of the air purification device is zero, and a shutdown instruction is sent to the range hood.

[0090] Furthermore, the air outlet of the air purification device is provided with a blowing blade with an adjustable air outlet angle. The air purification device is respectively connected to a plurality of air detection devices installed at different positions in the room, and the air inlet angle can be adjusted to quickly dilute or replace the air at a specific position. The specific process is as follows:

[0091] In step A, the air purification device communicates with a plurality of air detection devices in sequence to obtain a plurality of air detection values ​​and the position information corresponding to each air detection value.

[0092] In implementation, the air purification device body is equipped with an adjustable-angle blowing blade, which can quickly dilute or replace the air at a specific location by adjusting the air inlet angle. At the same time, the air purification device can be linked with multiple air detection devices, and multiple air detection devices are installed in different locations indoors. The communication information with the air purification device carries the orientation information and air detection value of the air detection device. Therefore, the air purification device communicates with multiple air detection devices in turn to obtain multiple air detection values ​​and the orientation information corresponding to each air detection value. Among them, the orientation information can be marked by GPS, millimeter-wave radar, manual input, etc.

[0093] Specifically, the specific process of executing step A is: the air purification device sends an air detection request to any air detection device, and opens a receiving information time window of a preset duration. After receiving the air detection value of the air detection device and the direction information corresponding to the air detection value, or after the receiving information time window of a preset duration ends, an air detection request is sent to the next air detection device, and the step of opening the receiving information time window of a preset duration is executed until communication with multiple air detection devices is completed, and multiple air detection values ​​and the direction information corresponding to each air detection value are obtained.

[0094] In implementation, the air purification device sends an air detection request to any one of the multiple air detection devices, and opens a receiving information time window of a preset duration, and waits for the air detection value fed back by the air detection device and the azimuth information corresponding to the air detection value. After receiving the air detection value of the air detection device and the azimuth information corresponding to the air detection value, or after the receiving information time window of a preset duration ends, an air detection request is sent to the next air detection device, and the step of opening the receiving information time window of a preset duration is performed until the communication with multiple air detection devices is completed, and multiple air detection values ​​and the azimuth information corresponding to each air detection value are obtained.

[0095] like Figure 3 As shown, the communication sequence between the air purification device and multiple air detection devices realizes the interconnection between n devices. When the air purification device has been paired and connected with n devices, the air purification device queries air detection devices 1 to n in sequence, and opens a receiving information time window each time an air detection request is issued. The air detection request device identifies whether it is its own information based on the pairing MAC carried in the air detection request. If so, it sends a response (air detection value and the position information corresponding to the air detection value) back to the air purification device within the receiving information time window. If not, there is no response. The inquiry information includes the detection operation instructions of the air detection device, and the response information includes the device's own position information and air detection value.

[0096] Furthermore, when the air purification device sends an air detection request to each air detection device, since there are multiple air detection devices, the air purification device can send an air detection request to any of the air detection devices in a directional manner. In this case, it is necessary to add the MAC address information of the air detection device to the air detection request. In this way, it can be determined that the air detection device set at the target position information is allowed to perform air detection. The specific steps are: for each air detection device, after receiving the air detection request, identify whether the paired MAC is its own address information. If so, detect the degree of air pollution, obtain the air detection value, and send the air detection value and the position information corresponding to the air detection value to the air purification device within the information receiving time window, otherwise, do not respond.

[0097] In implementation, for each air detection device, after receiving the air detection request, it identifies whether the paired MAC is its own address information. If so, it detects the degree of air pollution at the location, obtains the air detection value, and sends the air detection value and the position information corresponding to the air detection value to the air purification device within the information receiving time window.

[0098] Step B: the air purification device determines the maximum air detection value from multiple air detection values, and adjusts the air outlet angle of the blowing blades to the direction information corresponding to the maximum air detection value to discharge air.

[0099] In implementation, after the air purification device receives multiple air detection values ​​sent by multiple air detection devices, it compares the multiple air detection values ​​and determines the maximum air detection value from the multiple air detection values. The azimuth information corresponding to the maximum air detection value is the azimuth of the air detection device with the most serious pollution. At this time, the swing blades are adjusted to the azimuth information for air discharge, realizing the function of adjusting the angle of the air outlet following the pollution source. Therefore, the air purification device determines the maximum air detection value from multiple air detection values, and adjusts the air outlet angle of the blowing swing blades to the azimuth information corresponding to the maximum air detection value for air discharge.

[0100] Furthermore, the air purification equipment also has functions such as plasma sterilization and negative ion purification, which can achieve effects such as virus disinfection and particle adsorption and sedimentation during the kitchen air purification process.

[0101] The embodiment of the present application provides an air purification method, by installing an air purification device and an air detection device indoors, the air purification device is linked with the air detection device and the range hood respectively, data is exchanged, the amount of outdoor air introduced and / or the air detection result (a separate detection device or an existing detection function on the range hood) is adaptively adjusted according to the rotation speed of the range hood, the motor speed of the air purification device is determined and operated, the indoor air is renewed, and the indoor and outdoor air pressures are balanced, the air is purified, and the indoor exhaust gas is completely discharged. Thus, linkage between devices is realized, and kitchen air purification is realized more efficiently.

[0102] It should be understood that although Figures 2 to 3 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figures 2 to 3 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0103] It can be understood that the same / similar parts between the various embodiments of the above method in this specification can refer to each other, and each embodiment focuses on the differences from other embodiments. For related points, please refer to the description of other method embodiments.

[0104] The present application also provides an air purification device, such as Figure 4 As shown, the device comprises:

[0105] The first request module 401 is used for the air purification device to send an air detection request to the air detection device, and send a speed detection request to the range hood, and open a preset time window for receiving information;

[0106] The first detection module 401 is used for the air detection device to detect the air pollution level after receiving the air detection request, obtain the current air detection value, and send the current air detection value to the air purification device within the receiving information time window;

[0107] The second detection module 403 is used for the range hood to detect the current motor speed of the range hood and send the current motor speed of the range hood to the air purification device within the information receiving time window;

[0108] The first determination module 404 is used for the air purification device to determine the target motor speed of its own motor according to the current air detection value and / or the current range hood motor speed, and to control the motor of the air purification device to operate according to the target motor speed, so that outdoor fresh air enters the air purification device from the air inlet pipe and is discharged into the room from the air outlet of the air purification device.

[0109] As an optional implementation, when the air purification device determines the target motor speed of its own motor based on the current air detection value, the air purification device queries the target motor speed of the air purification device corresponding to the current air detection value in the pre-stored correspondence between the air detection value and the motor speed of the air purification device.

[0110] As an optional implementation, when the air purification device determines the target motor speed of its own motor based on the current range hood motor speed, the air purification device queries the target motor speed of the air purification device corresponding to the current range hood motor speed in the pre-stored correspondence between the range hood motor speed and the motor speed of the air purification device.

[0111] As an optional implementation, when the air purification device determines the target motor speed of its own motor according to the current air detection value and the current range hood motor speed, if the current air detection value is greater than or equal to the preset air detection value, and the current range hood motor speed is greater than or equal to the preset range hood motor speed, the air purification device determines the first preset motor speed as the target motor speed;

[0112] If the current air detection value is less than the preset air detection value, and the current range hood motor speed is greater than or equal to the preset range hood motor speed, the target motor speed of the air purification device is zero, and a gear downshift instruction is sent to the range hood;

[0113] If the current air detection value is greater than or equal to the preset air detection value, and the current range hood motor speed is less than the preset range hood motor speed, the target motor speed of the air purification device is zero, and a gear-up instruction is sent to the range hood;

[0114] If the current air detection value is less than the preset air detection value, and the current range hood motor speed is less than the preset range hood motor speed, the target motor speed of the air purification device is zero, and a shutdown command is sent to the range hood.

[0115] As an optional implementation, after sending the gear-up instruction to the range hood, the device further includes:

[0116] A second request module, configured to cause the air purification device to send an air detection request to the air detection device after a preset time period, and to open a time window for receiving information of a preset time period;

[0117] A third detection module, configured for the air detection device to re-detect the air pollution level after receiving the air detection request, and obtain a re-detected air detection value;

[0118] The second determination module is used to maintain the operation of the range hood according to the increased gear if the re-detected air detection value is less than the current air detection value, and if the re-detected air detection value is greater than or equal to the current air detection value, the air purification device determines the second preset motor speed as the target motor speed; wherein the first preset motor speed is greater than the second preset motor speed.

[0119] As an optional implementation, the device further includes:

[0120] A communication module, used for the air purification device to communicate with multiple air detection devices in sequence to obtain multiple air detection values ​​and position information corresponding to each air detection value;

[0121] The third determination module is used for the air purification device to determine the maximum air detection value from the multiple air detection values, and adjust the air outlet angle of the blowing blade to the azimuth information corresponding to the maximum air detection value to discharge air.

[0122] As an optional implementation manner, the communication module is specifically used to:

[0123] The air purification device sends an air detection request to any air detection device and opens a receiving information time window of a preset duration. After receiving the air detection value of the air detection device and the azimuth information corresponding to the air detection value, or after the receiving information time window of a preset duration ends, the air detection request is sent to the next air detection device and the step of opening the receiving information time window of a preset duration is performed until communication with the multiple air detection devices is completed and multiple air detection values ​​and the azimuth information corresponding to each air detection value are obtained.

[0124] As an optional implementation manner, the air detection request includes a pairing MAC; the communication module is specifically used to:

[0125] For each air detection device, after receiving the air detection request, it identifies whether the paired MAC is its own address information. If so, it detects the degree of air pollution, obtains the air detection value, and sends the air detection value and the position information corresponding to the air detection value to the air purification device within the information receiving time window. Otherwise, it does not respond.

[0126] The embodiment of the present application provides an air purification device, by installing an air purification device and an air detection device indoors, the air purification device is linked with the air detection device and the range hood respectively, data is exchanged, the amount of outdoor air introduced and / or the air detection result (a separate detection device or an existing detection function on the range hood) is adaptively adjusted according to the rotation speed of the range hood, the motor speed of the air purification device is determined and operated, indoor air is renewed, and the purpose of indoor and outdoor air pressure balance, air purification, and complete exhaust of indoor exhaust gas is achieved. Thus, linkage between devices is achieved, and kitchen air purification is achieved more efficiently.

[0127] For the specific definition of the air purification device, please refer to the definition of the air purification method above, which will not be repeated here. Each module in the above-mentioned air purification device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0128] It should be noted that, in this article, relational terms such as first and second, etc. 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 terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0129] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for display, data for analysis, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0130] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0131] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0132] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A method for air purification, characterized in that: The method is applied to an air purification system, which includes an air purification device, an air detection device and a range hood, wherein the air purification device is installed in a suspended ceiling indoors, an air outlet of the air purification device faces downward and is parallel to the bottom of the suspended ceiling, an air inlet pipe is arranged above the air purification device, and the air inlet pipe extends to the outdoors, and the air purification device is respectively connected to the air detection device and the range hood, and the method includes: The air purification device sends an air detection request to the air detection device, sends a speed detection request to the range hood, and opens a time window for receiving information of a preset duration; After receiving the air detection request, the air detection device detects the air pollution level, obtains the current air detection value, and sends the current air detection value to the air purification device within the information receiving time window; The range hood detects the current motor speed of the range hood and sends the current motor speed of the range hood to the air purification device within the information receiving time window; The air purification device determines the target motor speed of its own motor based on the current air detection value and / or the current range hood motor speed, and controls the motor of the air purification device to operate according to the target motor speed, so that fresh air from outdoor enters the air purification device from the air inlet pipe and is discharged into the room from the air outlet of the air purification device.

2. The method according to claim 1, characterized in that When the air purification device determines the target motor speed of its own motor based on the current air detection value, the air purification device queries the target motor speed of the air purification device corresponding to the current air detection value in the pre-stored correspondence between the air detection value and the motor speed of the air purification device.

3. The method according to claim 1, characterized in that When the air purification device determines the target motor speed of its own motor based on the current range hood motor speed, the air purification device queries the target motor speed of the air purification device corresponding to the current range hood motor speed in the pre-stored correspondence between the range hood motor speed and the motor speed of the air purification device.

4. The method according to claim 1, characterized in that When the air purification device determines the target motor speed of its own motor according to the current air detection value and the current range hood motor speed, if the current air detection value is greater than or equal to the preset air detection value, and the current range hood motor speed is greater than or equal to the preset range hood motor speed, the air purification device determines the first preset motor speed as the target motor speed; If the current air detection value is less than the preset air detection value, and the current range hood motor speed is greater than or equal to the preset range hood motor speed, the target motor speed of the air purification device is zero, and a gear downshift instruction is sent to the range hood; If the current air detection value is greater than or equal to the preset air detection value, and the current range hood motor speed is less than the preset range hood motor speed, the target motor speed of the air purification device is zero, and a gear-up instruction is sent to the range hood; If the current air detection value is less than the preset air detection value, and the current range hood motor speed is less than the preset range hood motor speed, the target motor speed of the air purification device is zero, and a shutdown command is sent to the range hood.

5. The method according to claim 4, characterized in that After sending the gear-up instruction to the range hood, the method includes: After a preset time, the air purification device sends an air detection request to the air detection device and opens a time window for receiving information for a preset time; After receiving the air detection request, the air detection device re-detects the air pollution level to obtain a re-detected air detection value; If the re-detected air detection value is less than the current air detection value, the range hood is maintained in operation according to the increased gear; if the re-detected air detection value is greater than or equal to the current air detection value, the air purification device determines the second preset motor speed as the target motor speed; wherein the first preset motor speed is greater than the second preset motor speed.

6. The method according to claim 1, characterized in that The air outlet of the air purification device is provided with a blowing blade capable of adjusting the air outlet angle, and the air purification device is respectively connected to a plurality of air detection devices installed at different positions indoors, and the method further comprises: The air purification device sequentially communicates with a plurality of air detection devices to obtain a plurality of air detection values ​​and position information corresponding to each air detection value; The air purification device determines a maximum air detection value from the multiple air detection values, and adjusts the air outlet angle of the blowing blade to the azimuth information corresponding to the maximum air detection value to discharge air.

7. The method according to claim 6, characterized in that The air purification device sequentially communicates with a plurality of air detection devices to obtain a plurality of air detection values ​​and position information corresponding to each air detection value, including: The air purification device sends an air detection request to any air detection device and opens a receiving information time window of a preset duration. After receiving the air detection value of the air detection device and the direction information corresponding to the air detection value, or after the receiving information time window of a preset duration ends, the air detection request is sent to the next air detection device, and the step of opening the receiving information time window of a preset duration is performed until communication with the multiple air detection devices is completed and multiple air detection values ​​and the direction information corresponding to each air detection value are obtained.

8. The method according to claim 7, characterized in that The air detection request includes a pairing MAC; the method further includes: For each air detection device, after receiving the air detection request, it identifies whether the paired MAC is its own address information. If so, it detects the degree of air pollution, obtains the air detection value, and sends the air detection value and the position information corresponding to the air detection value to the air purification device within the information receiving time window. Otherwise, it does not respond.

9. An air purification device, characterized in that: The device is applied to an air purification system, which includes an air purification device, an air detection device and a range hood. The air purification device is installed in a suspended ceiling indoors, and the air outlet of the air purification device is downward and parallel to the bottom of the suspended ceiling. An air inlet pipe is arranged above the air purification device, and the air inlet pipe extends to the outdoors. The air purification device is connected to the air detection device and the range hood respectively. The device includes: A first request module, configured for the air purification device to send an air detection request to the air detection device, and to send a speed detection request to the range hood, and to open a time window for receiving information of a preset duration; A first detection module, configured to detect the degree of air pollution after the air detection device receives the air detection request, obtain a current air detection value, and send the current air detection value to the air purification device within the information receiving time window; A second detection module is used for the range hood to detect the current motor speed of the range hood and send the current motor speed of the range hood to the air purification device within the information receiving time window; The first determination module is used for the air purification device to determine the target motor speed of its own motor according to the current air detection value and / or the current range hood motor speed, and to control the motor of the air purification device to operate according to the target motor speed, so that outdoor fresh air enters the air purification device from the air inlet pipe and is discharged into the room from the air outlet of the air purification device.

10. The device according to claim 9, characterized in that When the air purification device determines the target motor speed of its own motor based on the current air detection value, the air purification device queries the target motor speed of the air purification device corresponding to the current air detection value in the pre-stored correspondence between the air detection value and the motor speed of the air purification device.

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