Air purification system with fresh air function and working method

Abstract

The present invention relates to an air purification system with a fresh air function, comprising an air quality detection device, which is arranged in each space; a central control unit, which is connected to each air quality detection device in communication; an air purifier, which is connected to the central control unit in communication and can be moved to each space; a fresh air duct, which is arranged in each space and communicated with the outside of the space; an air duct is arranged in the machine body, and the outlet of the air duct forms an air outlet on the machine body, and an external circulation air inlet and an internal circulation air inlet are provided on the machine body corresponding to the upstream section of the air duct, and the external circulation air inlet is respectively provided with a valve that can be opened and closed, and the external circulation air inlet can be matched and docked with the fresh air duct. The air purification system is convenient for modification and can also introduce fresh air. The present invention also relates to a working method of the air purification system with a fresh air function, which controls the air purifier to move into a space according to air quality parameters, docks with the fresh air duct in the space, and then introduces fresh air and purifies the air.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and mainly to an air purification system with a fresh air function, and also to a working method of the air purification system with a fresh air function. Background Art

[0002] The existing air purification equipment mainly includes air purifiers, air purification robots, and fresh air systems. Among them, air purifiers and air purification robots are mainly used to purify particulate pollutants such as PM2.5 in indoor air. The purification ability of pollutants such as CO2 and HCHO is relatively weak, and due to their structure, air purifiers and air purification robots cannot be effectively connected with the outside air when working, and cannot effectively introduce fresh air. For example, the Chinese invention patent application "A Household Air Purification Robot and Its Pollution Source Determination and Purification Method" with publication number CN1112379000A (application number 202010044777.3) discloses an air purification robot that can move to the pollution source according to the air pollution detection structure, and then purify the air at the pollution source. Although this solution can autonomously find the pollution source, it cannot solve the problem of connecting with the outside world, and it is still impossible to introduce fresh air from the outside world, and the application effect is limited.

[0003] There are two types of mainstream fresh air systems on the market. One is the "central duct fresh air system" that uses a structure similar to "central air conditioning" and is installed on the roof of the house to provide fresh air. Its characteristics are high installation costs and the need to redecorate the interior during installation. The other is the "wall-mounted ductless fresh air system" that is hung on the wall, has holes opened on the wall, and uses ducts to connect to the outside air to provide fresh air. Its characteristics are limited purification area and can only purify the air within the installation space. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide an air purification system with a fresh air function that is easy to modify and can purify the air in the entire space and can be connected to the outside world to introduce fresh air.

[0005] The second technical problem to be solved by the present invention is to provide a working method of the aforementioned air purification system with fresh air function in view of the above-mentioned prior art.

[0006] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: an air purification system with a fresh air function, comprising:

[0007] Air quality detection devices are installed in each space;

[0008] A central control unit is connected to communicate with each air quality detection device;

[0009] An air purifier comprises a body and a driving device for driving the body to move, wherein the driving device is arranged in the body and is communicatively connected with a central control unit;

[0010] It is characterized by: it also includes

[0011] Fresh air ducts are arranged in each space and communicated with the outside of the space;

[0012] An air duct is arranged in the machine body, and the outlet of the air duct forms an air outlet on the machine body. An external circulation air inlet and an internal circulation air inlet are opened on the machine body corresponding to the upstream section of the air duct. The external circulation air inlet is respectively provided with openable and closable valves, and the external circulation air inlet can be matched and connected with the fresh air duct.

[0013] In order to facilitate the air purifier to achieve autonomous movement, a positioning module is provided on the body and is communicatively connected to the central control unit.

[0014] Preferably, the positioning module includes positioning devices respectively arranged on the front side, rear side, left side and right side of the machine body.

[0015] In order to facilitate the movement of the rear side of the machine body to move against the wall, two positioning devices are arranged on the rear side of the machine body along the left and right directions.

[0016] In order to facilitate accurate docking between the air purifier and the fresh air duct and to achieve reliability of docking, a first magnetic part is provided on the docking surface of the external circulation air inlet, and a second magnetic part that matches and engages with the first magnetic part is provided on the docking surface of the fresh air duct.

[0017] In order to facilitate the determination of the moving direction of the air purifier when docking with the fresh air duct, a magnetic sensor for detecting the magnetic force of the first magnetic member is provided on the machine body, and the magnetic sensor is communicatively connected with the central control unit.

[0018] A filter module and a fan are arranged in the air duct of the machine body. The filter module is arranged at the outlet end of the fan, and the fan is communicatively connected with a central control unit.

[0019] In order to perform primary filtration on the fresh air introduced from the outside, a filter is arranged in the fresh air duct.

[0020] In order to ensure the reliability of the connection between the fresh air duct and the air purifier, a connecting pipe is provided in the connecting end of the fresh air duct, a driver for driving the connecting pipe to move outward and reset is provided in the fresh air duct, and a wireless power module is provided on the docking surface of the fresh air duct, and the wireless power module is electrically connected to the driver;

[0021] A wireless charging module that can be matched and docked with the wireless power-on module is arranged on the docking surface of the external circulation air inlet, a battery is arranged in the body, and the wireless charging module and the driving device are electrically connected to the battery respectively.

[0022] Preferably, the central control unit is arranged on the air purifier.

[0023] The technical solution adopted by the present invention to solve the above second technical problem is: a working method of the above air purification system, characterized in that: the air quality detection device in each space detects and obtains the air quality parameters in the corresponding space, and then transmits them to the central control unit;

[0024] The central control unit controls the driving device to drive the air purifier to move to a space according to the air quality parameters, and the central control unit controls the driving device to drive the air purifier to operate, thereby achieving the connection between the air purifier and the fresh air duct in the space;

[0025] After the air purifier is connected to the fresh air duct, the central control unit controls the air purifier to start working to introduce fresh air and purify the air.

[0026] When multiple spaces require air purification, in order to ensure that the air purifier can work normally, the user sets the priority parameters in each space as needed. Before driving the air purifier to move, the priority parameters and air quality parameters are comprehensively calculated to obtain the purification order of each space. The central control unit controls the driving device to drive the air purifier to move to each space according to the purification order.

[0027] Preferably, for different air quality parameter intervals, different calculation parameters Ai of the same order of magnitude as the priority parameters are set;

[0028] Determine the calculation parameter Aj corresponding to each space according to the air quality parameters of each space;

[0029] Get the priority parameter corresponding to each space as Bj;

[0030] Calculate the purification sequence parameter Cj=Aj+Bj;

[0031] The purification order of each space is determined according to the purification order parameter Cj.

[0032] In order to ensure that the air purifier can better connect with the fresh air duct, after driving the air purifier to move into a space, the side of the air purifier with the external circulation air inlet is driven to face the wall of the space where the fresh air duct is set, and the side of the air purifier with the external circulation air inlet is driven to stick to the wall of the space where the fresh air duct is set, and then the air purifier is driven to move against the wall to a position connected with the fresh air duct.

[0033] Compared with the prior art, the advantages of the present invention are as follows: the air purification system with fresh air function in the present invention, on the basis of setting up a movable air purifier, is additionally provided with a fresh air duct in each space that can be connected with the air purifier, and the fresh air function is realized through the cooperation of the two. The installation of the fresh air duct does not require the overall decoration of the room to realize the establishment of the fresh air duct, and only requires drilling holes in the wall to install the fresh air duct, which is less difficult to modify and more convenient to install.

[0034] The working method of the air purification system with fresh air function can realize the introduction of fresh air on the basis of purifying the air in each space. The transformation cost is low and the air purification and renewal effects are better. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural block diagram of an air purification system with a fresh air function in an embodiment of the present invention.

[0036] Figure 2 It is a schematic structural diagram of an air purification system with a fresh air function in an embodiment of the present invention.

[0037] Figure 3 for Figure 2 sectional view of .

[0038] Figure 4 Schematic diagram of the structure of the new air duct in an embodiment of the present invention.

[0039] Figure 5 The present invention is a flowchart of the working method of the air purification system with fresh air function in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below with reference to the accompanying drawings.

[0041] like Figures 1 to 4 As shown, the air purification system with fresh air function in this embodiment includes an air quality detection device 100, a central control unit 200, an air purifier 300, and a fresh air duct 400.

[0042] The air quality detection device 100 is set in each space. Different air quality detection devices 100 can be selected according to different application sites. For example, when used at home, an air quality detection device 100 capable of detecting pollutant parameters such as PM2.5, CO2, and HCHO can be selected. If used in a chemical site, an air quality detection device 100 capable of detecting other pollutant parameters can be selected. The air quality detection devices 100 in each space are respectively connected to the central control power supply for communication, and data can be transmitted through wireless communication.

[0043] The central control unit 200 can be directly set in the air purifier 300 or in a main control console, etc., depending on the specific application of the system. The air purification system with fresh air function in this embodiment is mainly used in family houses. Specifically, in this embodiment, the central control unit 200 is set in the air purifier 300, so as to simplify its system structure while ensuring its basic working functions.

[0044] like Figure 2 As shown, the air purifier 300 includes a body 1 and a driving device 10 for driving the body 1 to move. In order to realize the movement of the body 1, a roller is provided at the bottom of the body 1. The roller in this embodiment adopts a Mecanum wheel, which facilitates the movement of the body 1 in various directions. The driving device 10 can adopt the matching structure of various drivers 43 and transmission mechanisms in the existing mechanical mechanism. The driving device 10 can meet the requirements of driving the body 1 to move forward, backward, circle, etc. The driving device 10 can also drive the body 1 to move in the up and down directions as needed. The driving device 10 is arranged in the lower space of the body 1 and is connected to the central control unit 200 for communication. The driving device 10 controls the body 1 to move according to the control signal of the central control unit 200.

[0045] The fresh air duct 400 is arranged in each space and communicated with the outside of the space. Specifically, the fresh air duct 400 is installed in the wall of the space. The fresh air duct 400 realizes the communication between the space and the outside air to facilitate the introduction of fresh air. When installing the fresh air duct 400, it is only necessary to drill holes on the wall to be installed, and there is no need to install it like the existing fresh air system, that is, there is no need to additionally decorate the inner wall of the building to form a fresh air channel connected to the outside. The fresh air duct 400 in this embodiment is easy to modify, easy to install and low in cost.

[0046] The air purification system with fresh air function is suitable for use in various buildings. The air purification system with fresh air function can purify the air and introduce fresh air into different small areas within a large space. For example, when it is used in a relatively large sports stadium or exhibition hall, the large space can be divided into areas, and a fresh air duct 400 is respectively set on the walls around the large space for each area.

[0047] The air purification system with fresh air function can also perform air purification and fresh air introduction for different room spaces in a house. In this scenario, a fresh air duct 400 is installed on the wall near the outside in each room.

[0048] The number of corresponding air purifiers 300 can be specifically set according to the size of the space. For example, for a place with a larger space, at least two air purifiers 300 can be used to work simultaneously. When at least two air purifiers 300 are used, a central control unit 200 can be set, and the central control unit 200 uniformly allocates each air purifier 300. A central control unit 200 can also be set in each air purifier 300, and each air purifier is responsible for air purification work in different spaces in a designated area.

[0049] The air purification system with fresh air function in this embodiment is mainly used in home buildings, so usually only one air purifier is required, and the corresponding central control unit 200 is also arranged in the air purifier 300.

[0050] like Figure 3 As shown, an air duct 11 is arranged in the machine body 1, and the outlet of the air duct 11 forms an air outlet 111 on the machine body 1. The air outlet 111 in this embodiment is opened at the top of the machine body 1. An external circulation air inlet 12 and an internal circulation air inlet 13 are opened on the machine body 1 corresponding to the upstream section of the air duct 11. The external circulation air inlet 12 is respectively provided with an openable and closable valve 14, and the external circulation air inlet 12 can be matched and docked with the fresh air pipe 400. Usually, the internal circulation air inlet 13 is often in an open state, while the external circulation air inlet 12 is always in a closed state. The valves 14 on the external circulation air inlet 12 and the internal circulation air inlet 13 can adopt a manual opening and closing structure and can adopt an opening and closing mechanism that can be driven by a motor. When the valve 14 adopts a motor-driven opening and closing mechanism, a driving mechanism electrically connected to the central control unit 200 is correspondingly arranged in the machine body 1, and the valve 14 is driven by the driving mechanism to perform an opening and closing action.

[0051] A filter module 17 and a fan 18 are arranged in the air duct 11 of the machine body 1. The filter module 17 is arranged at the outlet end of the fan 18, and the fan 18 is connected to the central control unit 200. The filter module 17 can select different filter layers according to specific filtering requirements. For example, when used in a home, a filter module 17 composed of filter layers such as a basic dust filter 41 and a formaldehyde filter 41 can be selected.

[0052] In this embodiment, the upstream section of the air duct 11 is arranged near the rear of the body 1, and the external circulation air inlet 12 is opened on the rear wall of the body 1 and is connected to the air duct 11. The external circulation air inlet 12 is based on the limited height of the air purifier 300, and the height of the external circulation air inlet 12 relative to the ground of the space is limited, and the installation height of the air duct on the wall of the space cavity matches the height of the external circulation air inlet 12 on the air purifier 300, and is usually arranged at a position not high from the ground. Of course, the fresh air duct 400 can also be installed at a relatively high position, and the driving device 10 in the corresponding body 1 has the function of driving the body 1 to move up and down.

[0053] In order to facilitate the air purifier 300 to achieve autonomous movement, a positioning module 15 is provided on the body 1 that is in communication with the control central control unit 200. The positioning module 15 in this embodiment includes positioning devices 151 respectively arranged on the front side, rear side, left side and right side of the body 1. The positioning device 151 arranged on the front side of the body 1 adopts a laser radar, and the positioning device 151 arranged on the rear side, left side and right side of the body 1 adopts an ultrasonic radar. The positioning device 151 can realize the establishment of a plane map of the application space and can realize the positioning of the body 1 in the space. Usually, when the air purification system with fresh air function is used for the first time, the central control unit 200 controls the air purifier 300 to move, and uses the positioning device 151 to scan various spaces in the application building, construct a spatial plan view in the building and store it, and the scanning and construction method of the spatial plan view adopts the algorithm in the prior art.

[0054] When the air purifier 300 moves into a space and needs to be connected to the fresh air duct 400 in the space, in this embodiment, the control drive device 10 drives the side of the air purifier 300 with the external circulation air inlet 12 to be close to the wall of the space where the fresh air duct 400 is set, and then drives the air purifier 300 to move close to the wall and move to a position opposite to the fresh air duct 400.

[0055] In order to facilitate the movement of the rear side of the machine body 1 to move against the wall, two positioning devices 151 are provided on the rear side of the machine body 1 along the left and right directions.

[0056] During operation, the specific walking path driven by the driving device 10 of the air purifier 300 is as follows: after entering a space, the front side of the air purifier 300 is first controlled to move toward the wall where the fresh air duct 400 is set. After the front side of the air purifier 300 is at a set distance from the wall, the driving device 10 drives the air purifier 300 to rotate 180° so that the rear side of the air purifier 300 faces the wall. At this time, it is necessary to determine whether the fuselage is perpendicular to the wall. Assuming that the distance between the two positioning devices 151 on the rear side of the body 1 is a meter, and the distance difference between the two positioning devices 151 and the wall is b meters, if the distance value detected by the left positioning device 151 is greater than the distance value detected by the right positioning device 151, the fuselage rotates clockwise by tan-1 (b / a), otherwise the fuselage rotates counterclockwise by tan-1 (b / a); if the distance values ​​measured by the two positioning devices 151 from the wall are equal, no rotation is required. After rotating into place, the driving device 10 controls the body 1 to retreat toward the wall. When it runs to the wall, the driving device 10 drives the air purifier to move against the wall and move to a position corresponding to the fresh air duct 400.

[0057] In order to facilitate accurate docking between the air purifier 300 and the fresh air duct 400 and to achieve the reliability of docking, a first magnetic member 16 is provided on the docking surface of the external circulation air inlet 12, and a second magnetic member 401 that matches and attracts the first magnetic member 16 is provided on the docking surface of the fresh air duct 400. In addition, in order to facilitate the determination of the moving direction of the air purifier 300 when docking with the fresh air duct 400, a magnetic sensor 161 for detecting the magnetic force of the first magnetic member 16 is provided on the body 1, and the magnetic sensor 161 is connected to the central control unit 200 for communication. The central control unit 200 first controls the driving device 10 to drive the air purifier 300 to move in a fixed direction. During the movement, the detection data of the magnetic sensor 161 is detected in real time. If the detection data of the magnetic sensor 161 gradually decreases, it means that the air purifier 300 is moving against the wall away from the fresh air duct 400. At this time, it is necessary to control the driving device 10 to drive the air purifier 300 to move in the opposite direction until the air purifier 300 is driven to move to the position of the fresh air duct 400. At this time, the detection data of the magnetic sensor 161 reaches the maximum, and the external circulation air inlet 12 of the air purifier 300 is matched and docked with the fresh air duct 400 through the attraction of the first magnetic part 16 and the second magnetic part 401. If the detection data of the magnetic sensor 161 gradually increases, it means that the air purifier 300 is moving towards the fresh air duct 400 against the wall. Until the air purifier 300 is driven to move to the position of the fresh air duct 400, the detection data of the magnetic sensor 161 reaches the maximum. Through the attraction of the first magnetic part 16 and the second magnetic part 401, the external circulation air inlet 12 of the air purifier 300 is matched and docked with the fresh air duct 400.

[0058] After the external circulation air inlet 12 of the air purifier 300 is matched and connected with the fresh air duct 400, the central control unit 200 controls the fan 18 to start working. Under the action of the fan 18, fresh air can be introduced from the external circulation air inlet 12, and the ambient air in the space can be introduced from the internal circulation air inlet 13. After the fresh air and the introduced ambient air are filtered and processed by the filter module 17 in the air duct 11, the purified fresh air is output from the air outlet 111.

[0059] like Figure 4 As shown, in order to perform primary filtration on the fresh air introduced from the outside, a filter screen 41 is provided in the fresh air duct 400 , and the filter screen 41 can process and filter the introduced fresh air, thereby extending the service life of the filter module 17 in the air duct 11 .

[0060] In order to ensure the reliability of the connection between the fresh air duct 400 and the air purifier 300, a connecting tube 42 is provided in the connecting end of the fresh air duct 400, a driver 43 for driving the connecting tube 42 to move outward and reset is provided in the fresh air duct 400, and a wireless power module 431 is provided on the docking surface of the fresh air duct 400, and the wireless power module 431 is electrically connected to the driver 43. A wireless charging module 19 that can match and dock with the wireless power module 431 is provided on the docking surface of the external circulation air inlet 12, and a battery 191 is provided in the body 1, and the wireless charging module 19 and the driving device 10 are electrically connected to the battery 191 respectively. When the external circulation air inlet 12 in the air purifier 300 is matched and docked with the fresh air duct 400, the wireless charging module 19 and the wireless power module 431 are matched and docked, so that the driver 43 can be powered. After the driver 43 is powered, it drives the connecting tube 42 in the fresh air duct 400 to move outward, so that the connecting tube 42 goes from the external circulation air inlet 12 to the air duct 11, which improves the stability of the connection between the external circulation air inlet 12 and the fresh air duct 400. When the air purifier 300 needs to leave, the central control unit 200 controls the wireless charging module 19 to power off, and the driver 43 loses power and resets, which drives the connecting tube 42 to reset to the fresh air duct 400.

[0061] The air purifier 300 can not only obtain the control signal through the driving device 10, and then drive the air purifier 300 to move to each space to work. According to needs, the air purifier can also be manually driven, that is, the user drags the air purifier to move to each space, and then docks with the fresh air duct 400 installed in each space, so as to achieve air purification and fresh air introduction.

[0062] like Figure 5 As shown, the working method of the aforementioned air purification system includes the following steps. The air quality detection device 100 in each space detects and obtains the air quality parameters in the corresponding space, and then transmits them to the central control unit 200; the central control unit 200 controls the driving device 10 to drive the air purifier 300 to move to a space according to the air quality parameters, and the central control unit 200 controls the driving device 10 to drive the air purifier 300 to move, thereby realizing the docking of the air purifier 300 with the fresh air duct 400 in the space; after the air purifier 300 is docked with the fresh air duct 400, the central control unit 200 controls the air purifier 300 to start working to introduce fresh air and purify the air. When the air quality parameters detected by the air quality detection device 100 in the space meet the set requirements, the central control unit 200 controls the driving device 10 to drive the air purifier to leave the space to the next space to be air purified. Or when the air quality parameters in all spaces meet the set requirements, the air purifier is driven to move to the set position or stay in the current space.

[0063] When multiple spaces need to be air purified, in order to ensure that the air purifier 300 can work normally, the user sets the priority parameters in each space as needed. Before driving the air purifier 300 to move, the priority parameters and air quality parameters are comprehensively calculated to obtain the purification order of each space. The central control unit 200 controls the driving device 10 to drive the air purifier 300 to move to each space according to the purification order.

[0064] Specifically, for different air quality parameter intervals, different calculation parameters Ai of the same order of magnitude as the priority parameters are set, where i represents the number of air quality parameter intervals; users can set different priorities for each space as needed, or may not set a priority. When not set, the priority parameters of each space are equal and the minimum.

[0065] Determine the calculation parameter Aj corresponding to each space according to the air quality parameter of each space, where j represents the number of spaces; obtain the priority parameter Bj corresponding to each space; calculate the purification order parameter Cj=Aj+Bj of each space; determine the purification order of each space according to the purification order parameter Cj.

[0066] For example, in a home building, higher priority parameters can be set for areas where people frequently move around, such as setting the priority of the living room to 5, the priority of the master bedroom to 4, the priority of the second bedroom to 3, the priority of the bathroom to 2, and the priority of the dining room to 1.

[0067] Three air quality parameter intervals are set, namely, excellent air quality parameter interval, good air quality parameter interval, and poor air quality parameter interval. The calculation parameters corresponding to the good air quality parameter interval and the poor air quality parameter interval are 2 and 5 respectively.

[0068] If it is detected that the air quality data of the living room belongs to the bad air quality parameter interval, the air quality data of the master bedroom belongs to the good air quality parameter interval, the air quality data of the second bedroom belongs to the good air quality parameter interval, the air quality data of the bathroom belongs to the bad air quality parameter interval, and the air quality data of the dining room belongs to the good air quality parameter interval. Then the corresponding calculated purification sequence parameters of the living room, master bedroom, second bedroom, bathroom, and dining room are 10, 6, 5, 7, and 3 respectively. In this way, the air purification order of each space by the air purifier 300 is the living room, bathroom, master bedroom, second bedroom, and dining room.

[0069] The air purification system with fresh air function in the present invention is provided with a movable air purifier 300, and a fresh air duct 400 that can be connected with the air purifier 300 is additionally provided in each space, so that the fresh air function is realized through the cooperation of the two. The installation of the fresh air duct 400 does not require the overall decoration of the room to realize the establishment of the fresh air duct 11, and only requires drilling holes in the wall to install the fresh air duct 400, which is the least difficult to modify and more convenient to install.

[0070] The working method of the air purification system with fresh air function can realize the introduction of fresh air on the basis of purifying the air in each space. The transformation cost is low and the air purification and renewal effects are better.

[0071] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. An air purification system with fresh air function, comprising: An air quality detection device (100) is arranged in each space; A central control unit (200) is communicatively connected with each air quality detection device (100); An air purifier (300) comprises a body (1) and a driving device (10) for driving the body (1) to move, wherein the driving device (10) is arranged in the body (1) and is communicatively connected to a central control unit (200); Features: Also includes A fresh air duct (400) is arranged in each space and communicated with the outside of the space; An air duct (11) is arranged in the machine body (1), the outlet of the air duct (11) forms an air outlet (111) on the machine body (1), an external circulation air inlet (12) and an internal circulation air inlet (13) are arranged on the machine body (1) corresponding to the upstream section of the air duct (11), and an openable and closable valve (14) is arranged on each of the external circulation air inlets (12), and the external circulation air inlet (12) can be matched and docked with a fresh air pipe (400); The machine body (1) is provided with a positioning module (15) which is in communication connection with the central control unit (200); The positioning module (15) comprises positioning devices (151) respectively arranged on the front side, rear side, left side and right side of the body (1); Two positioning devices (151) are arranged on the rear side surface of the machine body (1) in a left-right direction; A first magnetic member (16) is provided on the docking surface of the external circulation air inlet (12), and a second magnetic member (401) matching and engaging with the first magnetic member (16) is provided on the docking surface of the fresh air duct (400); The machine body (1) is provided with a magnetic sensor (161) for detecting the magnitude of the magnetic force of the first magnetic member (16), and the magnetic sensor (161) is communicatively connected with the central control unit (200); A connecting pipe (42) is arranged in the connection end of the fresh air pipe (400), a driver (43) for driving the connecting pipe (42) to move outward and reset is arranged in the fresh air pipe (400), a wireless power-on module (431) is arranged on the docking surface of the fresh air pipe (400), and the wireless power-on module (431) is electrically connected to the driver (43); A wireless charging module (19) capable of docking with the wireless power-on module (431) is arranged on the docking surface of the external circulation air inlet (12); a battery (191) is arranged in the machine body (1); and the wireless charging module (19) and the driving device (10) are respectively electrically connected to the battery (191).

2. The air purification system according to claim 1, characterized in that: A filter module (17) and a fan (18) are arranged in the air duct (11) of the machine body (1); the filter module (17) is arranged at the outlet end of the fan (18); and the fan (18) is communicatively connected to a central control unit (200).

3. The air purification system according to claim 1, characterized in that: A filter screen (41) is arranged in the fresh air duct (400).

4. The air purification system according to claim 1, characterized in that: The central control unit (200) is arranged on the air purifier (300).

5. A method for operating an air purification system according to any one of claims 1 to 4, characterized in that: Detect and obtain air quality parameters in each space; According to air quality parameters, the air purifier (300) is controlled to move into a space, and the air purifier (300) is controlled to move so as to dock with a fresh air duct (400) in the space; The air purifier (300) is controlled to start working so as to introduce fresh air and purify the air.

6. The working method of the air purification system according to claim 5, characterized in that: The user sets the priority parameters in each space as required, and before driving the air purifier (300) to move, the priority parameters and air quality parameters are comprehensively calculated to obtain the purification order of each space, and the air purifier (300) is driven to move to each space according to the purification order.

7. The working method of the air purification system according to claim 6, characterized in that: Different calculation parameters Ai are set for different air quality parameter ranges; Determine the calculation parameter Aj corresponding to each space according to the air quality parameters of each space; Get the priority parameter corresponding to each space as Bj; Calculate the purification sequence parameter Cj=Aj+Bj; The purification order of each space is determined according to the purification order parameter Cj.

8. The working method of the air purification system according to claim 5, characterized in that: After the air purifier (300) is driven to move into a space, the side of the air purifier (300) on which the external circulation air inlet (12) is set is driven to face the wall of the space on which the fresh air duct (400) is set, and the side of the air purifier (300) on which the external circulation air inlet (12) is driven to be close to the wall of the space on which the fresh air duct (400) is set, and then the air purifier (300) is driven to move close to the wall to a position opposite to the fresh air duct (400).

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