Air treatment device and control method thereof, and fresh air system

Abstract

The present invention discloses an air treatment device and a control method thereof, and a fresh air system, which relate to the field of air conditioning technology, in order to solve the technical problems in related technologies that the filter cleaning effect is poor or that resources are easily wasted during cleaning. An embodiment of the present invention provides an air treatment device, which includes a shell, a filter device, a high-pressure jet device and a controller. An air inlet and an air outlet are provided on the shell, and an air duct is formed between the air inlet and the air outlet. The filter device is arranged in the air duct, and is used to filter the air passing through the filter device. The high-pressure jet device is arranged in a part of the air duct located on the leeward side of the filter device, and is used to clean the filter device. The controller is electrically connected to the high-pressure jet device, and the controller can control the opening or closing of the high-pressure jet device. The present invention is used for air purification.

Description

Technical Field

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

[0002] Existing air purifiers are usually equipped with a filter device to filter the air. During use, the filter device continuously absorbs dust and is prone to becoming clogged, thereby affecting its filtering and air supply effects. Therefore, the filter device needs to be cleaned or replaced regularly. Summary of the Invention

[0003] The purpose of the present invention is to provide an air treatment device and its control method, and a fresh air system, which are used to solve the technical problems in the related art that the filter device is easily dirty and blocked or the cleaning and replacement easily cause waste of resources.

[0004] In a first aspect, embodiments of the present invention provide an air treatment device. The air treatment device includes a housing, a filter device, a high-pressure jet device, and a controller. The housing is provided with an air inlet and an air outlet, forming an air duct between the air inlet and the air outlet. The filter device is disposed within the air duct and is configured to filter air passing through the filter device. The high-pressure jet device is disposed within a portion of the air duct located on the leeward side of the filter device and is configured to clean the filter device. The controller is electrically connected to the high-pressure jet device and can control the high-pressure jet device to be turned on or off.

[0005] In a second aspect, an embodiment of the present invention provides a control method for an air treatment device according to the first aspect, comprising the steps of: determining whether a filtration time of a filter device has reached a first threshold or an integer multiple of the first threshold; if so, controlling a high-pressure jet device to activate to clean the filter device; and controlling the high-pressure jet device to deactivate after the cleaning is complete.

[0006] In a third aspect, an embodiment of the present invention provides a fresh air system, comprising the air treatment device in the first aspect.

[0007] The air treatment device provided in an embodiment of the present invention has a filter device disposed within an air duct, so that when air passes through the filter device, dust particles in the air can be blocked by the filter device and accumulate on the filter device, thereby achieving air filtration. The air treatment device also includes a high-pressure jet device and a controller, and the high-pressure jet device is disposed within the portion of the air duct located on the leeward side of the filter device. The controller can control the high-pressure jet device to be turned on. When the filter device needs to be cleaned, the high-pressure jet device can be controlled to be turned on by the controller. After the high-pressure jet device is turned on, it can spray high-pressure gas toward the leeward side of the filter device. In this way, under the impact of the high-pressure gas, dust particles blocked on the filter device can be blown off, thereby achieving effective cleaning of the filter device. Compared with the prior art, the use of a high-pressure jet device and the use of high-pressure gas to clean the filter device has a good cleaning effect, is easy to use, and can effectively reduce the waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0009] Figure 1 A schematic structural diagram of an air treatment device provided in an embodiment of the present invention (the air inlet is provided on the side wall of the housing);

[0010] Figure 2 A schematic structural diagram of an air treatment device provided in an embodiment of the present invention (the air inlet is provided at the bottom of the housing);

[0011] Figure 3 A schematic structural diagram of a high-pressure jetting device provided in an embodiment of the present invention (including two fixed rails);

[0012] Figure 4 A schematic structural diagram of a high-pressure jet injection device provided in an embodiment of the present invention (including a fixed rail);

[0013] Figure 5 A flow chart of a control method for a high-pressure jetting device provided by an embodiment of the present invention;

[0014] Figure 6 One of the flow charts of the control method of the spray device provided in an embodiment of the present invention;

[0015] Figure 7 This is a second flow chart of a method for controlling a spray device according to an embodiment of the present invention;

[0016] Figure 8Flowchart 3 of the control method for the spray device provided in an embodiment of the present invention;

[0017] Figure 9 This is a control principle diagram of a controller in an air treatment device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0021] In a first aspect, an embodiment of the present invention provides an air treatment device. Figure 1 and Figure 9 As shown, the air treatment device comprises a housing 1, a filter device 2, a high-pressure jet device 3, and a controller. Housing 1 is provided with an air inlet 11 and an air outlet 12, forming an air duct 4 between air inlet 11 and air outlet 12. Filter device 2 is disposed within air duct 4 and is configured to filter air passing through filter device 2. High-pressure jet device 3 is disposed within the leeward portion of air duct 4, located away from filter device 2, and is configured to clean filter device 2. The controller is electrically connected to high-pressure jet device 3 and can control the opening and closing of high-pressure jet device 3.

[0022] It should be noted that if Figure 2 As shown, the air treatment device further includes a fan 5, which is arranged at the air outlet 12. Under the action of the fan 5, air can flow into the housing 1 of the air treatment device from the air inlet 11 and flow out from the air outlet 12. In addition, the opening positions of the air inlet 11 and the air outlet 12 are not unique. Figure 1 (the air inlet 11 is provided on the side wall of the housing 1) and Figure 2 (The air inlet 11 is provided at the bottom of the housing 1 ) These are only two examples and do not limit the scope of protection of the present invention.

[0023] The air treatment device provided by the embodiment of the present invention is as follows: Figure 1 As shown, a filter device 2 is provided within the air duct 4. When air passes through the filter device 2, dust particles in the air are blocked by the filter device 2 and accumulate on the filter device 2, thereby achieving air filtration. Since the air treatment device also includes a high-pressure jet device 3 and a controller, and the high-pressure jet device 3 is provided within the air duct 4, the controller can control the high-pressure jet device 3 to be turned on. Thus, when the filter device 2 needs to be cleaned, the high-pressure jet device 3 can be controlled to be turned on by the controller. Once turned on, the high-pressure jet device 3 sprays high-pressure gas toward the filter device 2. The impact of the high-pressure gas can blow off dust particles blocking the filter device 2, thereby effectively cleaning the filter device 2.

[0024] Because high-pressure jet device 3 is disposed within the portion of air duct 4 located on the leeward side of filter device 2, when high-pressure jet device 3 is activated, high-pressure gas is blown from the leeward side of filter device 2 toward filter device 2. Dust particles blown off fall into the portion of air duct 4 located between filter device 2 and air inlet 11. These dust particles are prevented from being blown out of air outlet 12 along with the air, and thus do not affect the filtering effect of the air treatment device. Compared to the prior art, the use of high-pressure jet device 3 and high-pressure gas to clean filter device 2 provides better cleaning results, is easier to use, and effectively reduces water waste.

[0025] In the air treatment device provided by the embodiment of the present invention, the structure of the high-pressure jet device 3 is not unique.

[0026] For example, Figure 1 、 Figure 3 and Figure 9 As shown, the high-pressure jet device 3 includes a guide rail assembly 31 and an air pump nozzle 32. The guide rail assembly 31 is installed in the part of the air duct 4 located on the leeward side of the filter device 2. The air pump nozzle 32 is arranged on the guide rail assembly 31 and can slide along the guide rail assembly 31 so that the jet range of the air pump nozzle 32 covers the filter device 2. The controller is electrically connected to the air pump nozzle 32 and is used to control the opening or closing of the air pump nozzle 32 and the movement of the air pump nozzle 32 on the guide rail assembly 31. When using the high-pressure jet device 3 with the above structure to clean the filter device 2, under the action of the controller, the air pump nozzle 32 can be driven to slide along the guide rail assembly 31 so that the jet range of the air pump nozzle 32 can cover the filter device 2, ensuring that the high-pressure jet device 3 can fully clean the filter device 2. The high-pressure jet device 3 with the above structure can effectively reduce the number of air pump nozzles 32 while ensuring the cleaning effect, thereby saving costs.

[0027] For example, the high-pressure jet device 3 may further include a mounting frame and multiple air pump nozzles, the mounting frame is mounted on the housing 1 , and the multiple air pump nozzles are spaced apart on the mounting frame, and the jet range of the multiple air pump nozzles can cover the filter device 2 .

[0028] In the air treatment device provided in the above embodiment, when the high-pressure jet device 3 includes the guide rail assembly 31 and the air pump nozzle 32, the structure of the guide rail assembly 31 is not unique.

[0029] For example, Figure 1 、 Figure 3 and Figure 9 As shown, the guide rail assembly 31 includes a fixed rail 311 and a sliding rail 312. The fixed rail 311 is fixedly arranged in the housing 1 along a first direction. The sliding rail 312 is slidably arranged on the fixed rail 311 along a second direction. The controller is electrically connected to the sliding rail 312, and the controller can control the sliding rail 312 to move along the first direction on the fixed rail 311. The air pump nozzle 32 is slidably arranged on the sliding rail 312, and the controller can control the air pump nozzle 32 to move along the second direction on the sliding rail 312. The first direction and the second direction are both parallel to the filtering surface of the filter device 2, and the first direction intersects with the second direction.

[0030] Here, the filtering surface of the filter device 2 refers to its cross section perpendicular to the extending direction of the air duct.

[0031] When using the high-pressure jet device 3 of the above structure to clean the filter device 2, under the action of the controller, the air pump nozzle 32 moves along the first direction on the sliding rail 312, and at the same time the sliding rail 312 moves along the second direction on the fixed rail 311, so that on the plane parallel to the filtering surface of the filter device 2, the air pump nozzle 32 can move in all directions, thereby ensuring that the jet range of the air pump nozzle 32 covers the filter device 2.

[0032] The embodiment of the present invention utilizes a combination of fixed rails 311 and sliding rails 312, effectively expanding the range of motion of the air pump nozzle 32 with fewer components, simplifying the structure of the guide rail assembly 31 and reducing the space occupied by the guide rail assembly 31. Consequently, when the guide rail assembly 31 is installed in the air duct 4, it provides less resistance to the flowing air, resulting in less energy loss when the air passes through the air duct 4, thereby improving the practicality of the air treatment device.

[0033] It should be noted that the angle between the first direction and the second direction is not unique. In order to further simplify the structure of the guide rail assembly 31 and improve its reliability, as shown in FIG. Figure 1 and Figure 2 As shown, the angle between the first direction and the second direction can be designed to be 90 degrees or approximately 90 degrees. In this way, when the sliding rail 312 moves on the fixed rail 311, the control of its moving direction is simpler.

[0034] For example, the guide rail assembly 31 may also include a plurality of fixed rails. The plurality of fixed rails are connected to form a movable path of the air pump nozzle 32. When the air pump nozzle 32 moves on the plurality of fixed rails, its jetting range can cover the filter device 2.

[0035] Furthermore, when the guide rail assembly 31 includes a fixed rail 311 and a sliding rail 312, the number and combination of the fixed rail 311 and the sliding rail 312 are not unique. Figure 3 As shown, the guide rail assembly 31 can also be composed of two fixed rails 311 and a sliding rail 312. Alternatively, as shown in FIG. Figure 4 As shown, the guide rail assembly 31 is composed of a fixed rail 311 and a sliding rail 312. It should be noted that, Figure 3 and Figure 4 Only two structural examples of guide rail assemblies 31 are provided, which does not constitute a limitation on the scope of protection of the present invention. In some embodiments, the number and combination of rails can be adjusted according to the size of the cross-sectional dimensions of the air duct 4, and no specific limitation is made here.

[0036] In order to further improve the self-cleaning ability of air handling units, such as Figure 1 and Figure 9 As shown, the air treatment device provided in this embodiment of the present invention further includes a spray device 6. Spray device 6 is disposed within the portion of air duct 4 located on the windward side of filter device 2. Spray device 6 includes a water inlet pipe and a nozzle disposed on the water inlet pipe, with the nozzle facing filter device 2. A controller is electrically connected to spray device 6 for controlling the opening and closing of spray device 6.

[0037] When dust particles on the filter device 2 are clumped and difficult to remove using the high-pressure air jet device 3 alone, the spray device 6 can be used for cleaning. Specifically, when impurities that are difficult to remove adhere to the filter device 2, the controller activates the spray device 6. When the spray device 6 is in operation, the nozzle sprays water toward the windward side of the filter device 2. This water spray loosens the clumped dust particles, which are then removed from the filter device 2 by the flushing action of the water spray and the blowing of the high-pressure air, effectively enhancing the self-cleaning capability of the air treatment device.

[0038] In addition, when the spray device 6 is turned on, the spraying water can also take away the dust in the air, thereby achieving the effect of cleaning the air, and can further enhance the filtering effect of the above-mentioned air treatment device on the air.

[0039] In addition, when the spray device 6 is turned on, it can also increase the humidity of the air in the air duct 4 and reduce the temperature of the air. That is, when the spray device 6 is turned on, the above-mentioned air treatment device has the functions of cooling and filtering at the same time.

[0040] Furthermore, in order to ensure uniform water spraying, an atomizing nozzle can be selected as the nozzle.

[0041] The number of nozzles may be determined according to the size of the filter device 2 and the cleaning requirements, and is not specifically limited here.

[0042] It should be noted that when the spray device 6 sprays water toward the filter device 2 and the moist air passes through the filter device 2, the filter device 2 will be soaked. Since the increased humidity of the filter device 2 will reduce its ventilation effect, in order to ensure that the ventilation of the air handling device is not affected, the spray device 6 should be selectively turned on or off to control the humidity of the filter device 2.

[0043] Since the humidity and temperature of the air will change when it passes through the spray device 6, the spray device 6 can be controlled to be turned on or off according to the changes in humidity and temperature.

[0044] For example, Figure 1 and Figure 9 As shown, the air handling device includes a first temperature sensor 71 and a second temperature sensor 72. The first temperature sensor 71 is disposed outside the housing 1 and is used to detect the temperature of the air outside the housing 1. The second temperature sensor 72 is disposed within the portion of the air duct 4 located on the leeward side of the filter device 2 and is used to detect the temperature of the air within the air duct 4. The controller is used to obtain the temperature information detected by the first and second temperature sensors 71, 72 and control the opening or closing of the spray device 6 based on the temperature information.

[0045] After receiving the temperature information from the first temperature sensor 71 and the second temperature sensor 72, the controller calculates the difference between the temperature of the air outside the housing 1 and the temperature of the air inside the air duct 4. When the difference is less than a preset value, it indicates that the humidity is too high. In this case, the controller can control the spray device 6 to be turned off. The preset value can be set according to the specific situation and is not specifically limited here.

[0046] For example, Figure 1 and Figure 9 As shown, the air treatment device includes a first humidity sensor 73 and a second humidity sensor 74. The first humidity sensor 73 is disposed outside the housing 1 and is used to detect the humidity of the air outside the housing 1. The second humidity sensor 74 is disposed within the portion of the air duct 4 located on the leeward side of the filter device 2 and is used to detect the humidity of the air within the air duct 4. The controller is used to obtain humidity information detected by the first humidity sensor 73 and the second humidity sensor 74 and control the opening or closing of the spray device 6 based on the humidity information.

[0047] After receiving humidity information from the first humidity sensor 73 and the second humidity sensor 74, the controller calculates the difference between the humidity of the air outside the housing 1 and the humidity of the air within the air duct 4. When the difference is less than a preset value, it indicates that the humidity is too high. In this case, the controller can control the spray device 6 to be turned off. The preset value can be set according to the specific situation and is not specifically limited here.

[0048] In the above embodiment, by providing a temperature sensor or humidity sensor, changes in the air humidity within the air duct 4 can be detected in a timely manner, thereby determining the humidity level of the filter device 2. When the humidity of the filter device 2 is too high, the controller promptly controls the spray device 6 to shut down and reduce the amount of water sprayed. In this way, the humidity of the filter device 2 can be controlled to be maintained within a certain range, thereby ensuring that it has a good filtering effect and a good ventilation effect.

[0049] It should be noted that when the temperature difference is too small and the humidity difference is too large, the controller can also be used to control the spray device 6 to open to adjust the air supply temperature and humidity.

[0050] In some embodiments, in order to simplify the structure of the air treatment device, the temperature detection device and the humidity detection device can be integrated into one device, such as a temperature and humidity sensor, and the device can be used to simultaneously detect the temperature and humidity of the air.

[0051] In addition, in some embodiments, the water content information of the filter device 2 can also be directly measured, and the spray device 6 can be turned on or off according to the information. Figure 2 and Figure 9 As shown, the air handling device includes a water sensor 75. Water sensor 75 is located on the leeward side of the filter device 2 and is used to detect whether the leeward side of the filter device 2 is wet. A controller is electrically connected to the water sensor 75 and is used to obtain water information detected by the water sensor 75 and control the opening or closing of the sprinkler device 6 based on the water information. Thus, when the water sensor 75 detects that the leeward side of the filter device 2 is wet, the controller can control the sprinkler device 6 to be closed.

[0052] In the above embodiment, the water immersion sensor 75 is used to directly detect whether the leeward side of the filter device 2 is wetted by water, and the spray device 6 is controlled to be closed when it is wetted by water, thereby ensuring that the leeward side of the filter device 2 remains dry, thereby ensuring that the filter device 2 has a better ventilation effect.

[0053] Furthermore, to avoid water waste and maintain cleanliness in the air duct 4, the air handling unit may also include a return water tray. This tray collects spray water, which, when flowing into it, removes foreign matter filtered by the filter device 2 within the air duct 4. The location of the return water tray depends on the structure and installation method of the air handling unit and is not specifically limited here.

[0054] In the air treatment device provided in the embodiment of the present invention, the type of the filter device 2 is not unique. For example, Figure 1 As shown, the filter device 2 may include a large air volume filter 21, i.e., a W-type / V-type filter. Using a filter of this structure can increase the filter area of ​​the filter device 2 within a limited space, thereby improving the filtering effect and ventilation effect, and enhancing the practicality of the air treatment device.

[0055] In some embodiments, in order to ensure that the filter is not blocked and damaged by mosquitoes, Figure 1 As shown, the filter device 2 may further include an insect-proof net 22, wherein the insect-proof net 22 is arranged on the windward side of the filter. By setting the insect-proof net 22, larger particles and mosquitoes in the air can be initially filtered, thereby effectively reducing their damage to the filter.

[0056] In a second aspect, an embodiment of the present invention provides a control method for the air treatment device in the first aspect. When the air treatment device is in operation, such as Figure 5 As shown, the control method includes: determining whether the filtration time of the filter device 2 reaches a first threshold or an integer multiple of the first threshold. If so, controlling the high-pressure jet device 3 to turn on and clean the filter device 2. After the cleaning is completed, controlling the high-pressure jet device 3 to turn off.

[0057] The setting of the first threshold value is not unique, and its specific value can be determined according to the air quality of the environment and the cleaning requirements of the filter device 2, and is not specifically limited here.

[0058] In the above control method, by periodically opening the high-pressure jet device 3 , the air treatment device can be self-cleaned, thereby ensuring that the filter device 2 has a good filtering effect and extending the service life of the filter device 2 .

[0059] Furthermore, when the air treatment device includes a spray device 6, a first temperature sensor 71 and a second temperature sensor 72, as shown in FIG. Figure 6 As shown, the control method provided by the embodiment of the present invention also includes:

[0060] The temperature information detected by the first temperature sensor 71 and the second temperature sensor 72 is acquired.

[0061] The difference between the temperatures detected by the first temperature sensor 71 and the second temperature sensor 72 is calculated.

[0062] It is determined whether the temperature difference is greater than or equal to a second threshold.

[0063] If yes, the spray device 6 is controlled to be closed.

[0064] The value of the second threshold is not unique, and its specific value can be set according to the structure, material and ventilation requirements of the filter device 2, and is not specifically limited here.

[0065] Furthermore, when the air treatment device includes a spray device 6, a first humidity sensor 73 and a second humidity sensor 74, as shown in FIG. Figure 7 As shown, the control method provided by the embodiment of the present invention also includes:

[0066] The humidity information detected by the first humidity sensor 73 and the second humidity sensor 74 is acquired.

[0067] The difference between the humidity detected by the first humidity sensor 73 and the humidity detected by the second humidity sensor 74 is calculated.

[0068] It is determined whether the humidity difference is less than or equal to a third threshold.

[0069] If yes, the spray device 6 is controlled to be closed.

[0070] The value of the third threshold is not unique, and its specific value can be set according to the structure, material and ventilation requirements of the filter device 2, and is not specifically limited here.

[0071] In the above control method, the humidity level of the filter device 2 can be determined based on the temperature or humidity difference before and after the air passes through the spray device 6. If the humidity of the filter device 2 is too high, the spray device 6 is promptly closed to reduce the amount of water sprayed. In this way, the humidity of the filter device 2 can be controlled to be maintained within a certain range, thereby ensuring that it has a good filtering effect and a good ventilation effect.

[0072] Furthermore, when the air handling device includes a spray device 6 and a water immersion sensor 75, as shown in FIG. Figure 8 As shown, the control method provided by the embodiment of the present invention also includes:

[0073] The water immersion information detected by the water immersion sensor 75 is obtained.

[0074] Determine whether the flooding information meets the preset conditions.

[0075] If yes, the spray device 6 is controlled to be closed.

[0076] The water immersion information includes "water-immersed" and "not water-immersed", and the preset condition is "water-immersed".

[0077] In the above control method, the water immersion sensor 75 is used to directly detect whether the leeward side of the filter device 2 is wetted by water, and the spray device 6 is controlled to be closed when it is wetted by water, which can ensure that the leeward side of the filter device 2 remains dry, thereby ensuring that the filter device 2 has a better ventilation effect.

[0078] In a third aspect, an embodiment of the present invention provides a fresh air system, comprising the air treatment device in the first aspect.

[0079] The technical problems solved and the technical effects achieved by the fresh air system provided in the embodiment of the present invention are the same as the technical problems solved and the technical effects achieved by the air treatment device in the first aspect, and will not be repeated here.

[0080] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0081] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An air treatment device, characterized in that: include: A housing, wherein an air inlet and an air outlet are provided on the housing, and an air duct is formed between the air inlet and the air outlet; a fan, disposed at the air outlet; a filter device, disposed in the air duct, for filtering the air passing therethrough; a high-pressure jet device, disposed in a portion of the air duct located on the leeward side of the filter device, for cleaning the filter device; a spray device disposed in a portion of the air duct located on the windward side of the filter device, the spray device comprising a water inlet pipe and a nozzle disposed on the water inlet pipe, the nozzle being disposed toward the filter device; a first temperature sensor, disposed outside the housing, for detecting the temperature of air outside the housing; a second temperature sensor, disposed in a portion of the air duct located on the leeward side of the filter device, for detecting the temperature of the air in the air duct; A controller is electrically connected to the high-pressure jet device, the first temperature sensor, the second temperature sensor and the spray device, and is used to control the opening or closing of the high-pressure jet device, and to obtain temperature information detected by the first temperature sensor and the second temperature sensor, and to control the opening or closing of the spray device according to the temperature difference detected by the first temperature sensor and the second temperature sensor.

2. The air treatment device according to claim 1, characterized in that The high-pressure jet device comprises: a guide rail assembly mounted in a portion of the air duct located on the leeward side of the filter device; an air pump nozzle, disposed on the guide rail assembly and capable of relative movement with the guide rail assembly so that the air jet range of the air pump nozzle covers the filter device; The controller is also electrically connected to the air pump nozzle for controlling the opening or closing of the air pump nozzle and controlling the movement of the air pump nozzle on the guide rail assembly.

3. The air treatment device according to claim 2, characterized in that The guide rail assembly comprises: A fixed rail, fixedly disposed in the housing along a first direction; A sliding rail, slidably disposed on the fixed rail along a second direction; The controller is also electrically connected to the sliding rail, and the controller can control the sliding rail to move along the first direction on the fixed rail; The air pump nozzle is slidably arranged on the sliding rail, and the controller can control the air pump nozzle to move along the second direction on the sliding rail; The first direction and the second direction are both parallel to the filtering surface of the filtering device, and the first direction intersects with the second direction.

4. The air treatment device according to claim 1, characterized in that The air treatment device further comprises: a first humidity sensor, disposed outside the housing, for detecting the humidity of the air outside the housing; a second humidity sensor, disposed in a portion of the air duct located on the leeward side of the filter device, for detecting the humidity of the air in the air duct; The controller is also electrically connected to the first humidity sensor and the second humidity sensor, and is used to obtain humidity information detected by the first humidity sensor and the second humidity sensor, and to control the spray device to be turned on or off according to the humidity information.

5. The air treatment device according to claim 1, characterized in that The air treatment device further comprises: a water immersion sensor, disposed on the leeward side of the filter device, for detecting whether the leeward side of the filter device is wetted by water; The controller is also electrically connected to the water immersion sensor, and is used to obtain water immersion information detected by the water immersion sensor, and control the sprinkler device to be turned on or off according to the water immersion information.

6. The air treatment device according to claim 1, characterized in that The filtering device includes a large air volume filter.

7. A control method for the air treatment device according to any one of claims 1 to 6, characterized in that: The air treatment device includes a spray device, a first temperature sensor, and a second temperature sensor. When the air treatment device is in operation, the control method includes: Determining whether the filtering time of the filtering device reaches a first threshold or an integer multiple of the first threshold; If yes, the high-pressure jet device is controlled to be turned on to clean the filter device, and after one cleaning is completed, the high-pressure jet device is controlled to be turned off; Acquiring temperature information detected by the first temperature sensor and the second temperature sensor; calculating a difference between temperatures detected by the first temperature sensor and the second temperature sensor; Determining whether the temperature difference is greater than or equal to a second threshold; If yes, the spray device is controlled to be closed.

8. The control method according to claim 7, characterized in that: The air treatment device includes a spray device, a first humidity sensor and a second humidity sensor, and the control method further includes: Acquiring humidity information detected by the first humidity sensor and the second humidity sensor; calculating a difference in humidity detected by the first humidity sensor and the second humidity sensor; Determine whether the humidity difference is less than or equal to a third threshold, If yes, the spray device is controlled to be closed.

9. The control method according to claim 7, characterized in that: The air treatment device includes a spray device and a water immersion sensor, and the control method further includes: Acquiring water immersion information detected by the water immersion sensor; Determine whether the water immersion information meets a preset condition; if so, control the spray device to be closed.

10. A fresh air system, characterized in that: The air treatment device comprises the air treatment device according to any one of claims 1 to 6.

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