Air Purifier

Abstract

The present invention provides an air purifier. The air purifier includes: a casing having an air inlet, an air outlet and an air duct, wherein the air inlet is connected to the air outlet through the air duct; a wet curtain assembly, which is arranged in the casing and located at the air outlet of the air duct, wherein the wet curtain assembly includes a wet curtain and a first buffer structure, wherein the first buffer structure is used to buffer liquid, wherein at least part of the wet curtain is located in the first buffer structure so as to wet the wet curtain with liquid; a liquid supply assembly, which is arranged in the casing in a liftable manner, wherein the liquid supply assembly includes a liquid supply device; wherein the liquid supply device has a first position connected to the first buffer structure to supply liquid to the first buffer structure and a second position disconnected from the first buffer structure and avoiding the air outlet of the air duct. The present invention effectively solves the problem in the prior art that the air output of the air freshener in the purification mode is small and cannot meet the user's use requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of household electrical appliances, and in particular to an air purifier. Background Art

[0002] At present, the functions of air purifiers are more diverse. They are not only used to purify particulate matter, odor, harmful gases, etc. in the air, but also have derived more complex functions, such as anti-virus, humidification, dehumidification, etc., making the application scenarios of air purifiers more and more extensive and meeting the various needs of consumers. Among them, the humidification air purifier (referred to as the air freshener) is a product that integrates humidification and purification. It can humidify the air while purifying it, making the ambient air fresher and more comfortable.

[0003] In the prior art, air fresheners are usually of the water tank evaporation type, that is, water is allowed to flow into a water tank through a valve at the bottom of the water tank. A wet curtain assembly is installed in the water tank. The wet curtain absorbs moisture after being immersed in water, filling the entire wet curtain with moisture. Air is then supplied by a fan to pass through the wet curtain, thereby evaporating the moisture to achieve a humidification effect.

[0004] However, in the prior art, the water tank and the wet curtain assembly of the air freshener are placed side by side, and the water tank takes up a large part of the air outlet duct, resulting in too small air volume and poor purification effect when the user uses the purification function alone, and the noise is too loud, affecting the user experience. Summary of the invention

[0005] The main purpose of the present invention is to provide an air purifier to solve the problem that the air output of the air freshener in the prior art in the purification mode is small and cannot meet the user's use needs.

[0006] In order to achieve the above-mentioned objectives, the present invention provides an air purifier, comprising: a casing, having an air inlet, an exhaust port and an air duct, the air inlet being connected to the exhaust port through the air duct; a wet curtain assembly, arranged in the casing and located at the air duct outlet of the air duct, the wet curtain assembly comprising a wet curtain and a first cache structure, the first cache structure being used to cache liquid, at least a portion of the wet curtain being located in the first cache structure so as to wet the wet curtain with liquid; a liquid supply assembly, arranged in a liftable manner in the casing, the liquid supply assembly comprising a liquid supply device; wherein the liquid supply device has a first position connected to the first cache structure to supply liquid to the first cache structure and a second position disconnected from the first cache structure and avoiding the air duct outlet.

[0007] Furthermore, the first position is located above the second position, and the liquid supply device has an air guide surface; wherein, when the liquid supply device is in the first position, the wet curtain is located between the air duct outlet and the air guide surface, and the air guide surface is arranged toward the air duct outlet to guide the gas to the exhaust port.

[0008] Furthermore, the liquid supply component also includes: a second cache structure, which is connected to the liquid supply device; wherein the liquid supply component has a liquid supply state and a liquid return state, and when the liquid supply component is in the liquid supply state, the liquid in the liquid supply device enters the first cache structure through the second cache structure; when the liquid supply component is in the liquid return state, the liquid cached in the first cache structure flows back to the second cache structure.

[0009] Furthermore, the air purifier also includes: a fan, which is arranged in the casing and is used to suck the gas into the air duct through the air inlet; a purification component, which is arranged in the air duct and includes a filter and / or a deodorizing net.

[0010] Furthermore, the air purifier has a purification mode and a humidification mode. When the liquid supply device is located at the first position, the air purifier is in the humidification mode; when the liquid supply device is located at the second position, the air purifier is in the purification mode.

[0011] Furthermore, the air purifier includes: a lifting device, the liquid supply device is arranged on the lifting device, and at least a part of the lifting device can be lifted to drive the liquid supply device to switch between the first position and the second position.

[0012] Furthermore, the air purifier also includes: a humidity detection device for detecting the humidity value on the surface of the wet curtain; wherein, when the humidity detection value of the humidity detection device is less than or equal to a preset humidity value, the air purifier is controlled to be in purification mode.

[0013] Furthermore, the liquid supply component also includes: a connecting pipe, through which the first cache structure is connected to the second cache structure; a pump body structure, which is arranged on the connecting pipe, and the pump body structure is used to pump the liquid entering the second cache structure into the first cache structure; or, the pump body structure is used to pump the liquid cached in the first cache structure into the second cache structure.

[0014] Furthermore, one end of the connecting tube is connected to the second buffer structure, and the first buffer structure has a liquid passage hole; the other end of the connecting tube is telescopically arranged to extend into the liquid passage hole or withdraw from the liquid passage hole.

[0015] Furthermore, the first cache structure has a first recess, at least part of the wet curtain is located in the first recess, and a plurality of tooth-like portions are arranged on the outer peripheral surface of the wet curtain. The wet curtain assembly also includes: a driving device; a gear structure, which is drivingly connected to the driving device, and the gear structure is meshed with the tooth-like portions; wherein the driving device drives the gear structure to move to drive the wet curtain to rotate, thereby causing the wet curtain to be wetted by liquid.

[0016] Furthermore, the second cache structure has a second recess, the liquid supply device is arranged in the second recess, and the liquid outlet of the liquid supply device is used to communicate with the second recess.

[0017] By applying the technical solution of the present invention, the liquid supply assembly can be lifted and lowered in the casing and includes a liquid supply device, which has a first position connected to the first cache structure to supply liquid to the first cache structure and a second position disconnected from the first cache structure and avoiding the air outlet of the air duct. In this way, when the liquid supply device is in the first position, the liquid supply device supplies liquid to the first cache structure to wet the wet curtain and then humidify the gas. When the liquid supply device is in the second position, the liquid supply device does not supply liquid to the first cache structure, the wet curtain is in a dry state and cannot humidify the gas. At this time, the air purifier is in purification mode. In this mode, the liquid supply device avoids the air outlet of the air duct, thereby increasing the air outlet space of the air duct, and the gas discharged from the air outlet of the air duct can directly enter the exhaust port to be discharged into the room through the exhaust port.

[0018] Compared with the water tank and wet curtain assembly of the air freshener in the prior art, the liquid supply device in the present application can be raised and lowered. When the air purifier is in purification mode, the liquid supply device avoids the air outlet of the air duct, thereby increasing the air outlet space of the air duct, solving the problem that the air outlet of the air freshener in purification mode is small and cannot meet the user's use needs, and improving the purification effect. At the same time, the above arrangement can reduce the noise of the air outlet and improve the user's use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram showing the internal structure of an embodiment of an air purifier according to the present invention is shown;

[0021] Figure 2 Shows Figure 1 A schematic diagram of the structure of the wet curtain assembly of the air purifier; and

[0022] Figure 3 A control method of an air purifier according to the present invention is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Casing; 11. Air inlet; 12. Air duct; 121. Air duct outlet; 20. Wet curtain assembly; 21. Wet curtain; 22. First cache structure; 221. First recess; 23. Toothed portion; 24. Gear structure; 30. Liquid supply assembly; 31. Liquid supply device; 311. Wind guide surface; 32. Second cache structure; 40. Fan; 50. Purification assembly; 51. Filter; 52. Deodorizing net; 60. Lifting device; 70. Air inlet grille. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, the directional words used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0028] In order to solve the problem that the air output of the air freshener in the purification mode is small and cannot meet the user's usage needs, the present application provides an air purifier.

[0029] like Figure 1 and Figure 2 As shown, the air purifier includes a housing 10, a wet curtain assembly 20 and a liquid supply assembly 30. The housing 10 has an air inlet 11, an exhaust port and an air duct 12, and the air inlet 11 is connected to the exhaust port through the air duct 12. The wet curtain assembly 20 is arranged in the housing 10 and is located at the air duct outlet 121 of the air duct 12. The wet curtain assembly 20 includes a wet curtain 21 and a first buffer structure 22. The first buffer structure 22 is used to buffer liquid. At least part of the wet curtain 21 is located in the first buffer structure 22 to wet the wet curtain 21 with liquid. The liquid supply assembly 30 is arranged in the housing 10 in a liftable manner, and the liquid supply assembly 30 includes a liquid supply device 31. Among them, the liquid supply device 31 has a first position connected to the first buffer structure 22 to supply liquid to the first buffer structure 22 and a second position disconnected from the first buffer structure 22 and avoiding the air duct outlet 121.

[0030] By applying the technical solution of this embodiment, the liquid supply assembly can be lifted and lowered in the housing and includes a liquid supply device, which has a first position connected to the first cache structure to supply liquid to the first cache structure and a second position disconnected from the first cache structure and avoiding the air outlet of the air duct. In this way, when the liquid supply device is in the first position, the liquid supply device supplies liquid to the first cache structure to wet the wet curtain and then humidify the gas. When the liquid supply device is in the second position, the liquid supply device does not supply liquid to the first cache structure, the wet curtain is in a dry state and cannot humidify the gas. At this time, the air purifier is in purification mode. In this mode, the liquid supply device avoids the air outlet of the air duct, thereby increasing the air outlet space of the air duct, and the gas discharged from the air outlet of the air duct can directly enter the exhaust port to be discharged into the room through the exhaust port.

[0031] Compared with the water tank and wet curtain assembly of the air freshener in the prior art, the liquid supply device in the present application can be raised and lowered. When the air purifier is in purification mode, the liquid supply device avoids the air outlet of the air duct, thereby increasing the air outlet space of the air duct, solving the problem that the air outlet of the air freshener in purification mode is small and cannot meet the user's use needs, and improving the purification effect. At the same time, the above arrangement can reduce the noise of the air outlet and improve the user's use experience.

[0032] In this embodiment, the position of the liquid supply device 31 is adjustable, which increases the controllability of the position of the liquid supply device 31 and further improves the internal space utilization of the air purifier.

[0033] like Figure 1 As shown, the first position is located above the second position, and the liquid supply device 31 has an air guide surface 311. Among them, when the liquid supply device 31 is in the first position, the wet curtain 21 is located between the air duct outlet 121 and the air guide surface 311, and the air guide surface 311 is arranged toward the air duct outlet 121 to guide the gas to the exhaust port. In this way, during the operation of the air purifier, the gas discharged from the air duct outlet 121 first passes through the wet curtain 21, and the wet curtain 21 humidifies the above-mentioned gas. The gas humidified by the wet curtain 21 is blown to the air guide surface 311, so as to guide the gas to the exhaust port through the air guide surface 311, thereby ensuring that the gas in the air purifier can be smoothly discharged into the room, thereby improving the purification efficiency of the air purifier.

[0034] In this embodiment, the air guide surface 311 is an arc-shaped surface, and the center of the arc-shaped surface is located on the same side as the wet curtain 21, further increasing the air outlet space of the air duct outlet 121, avoiding gas turbulence at this position and causing vibration or noise in the air purifier.

[0035] like Figure 1As shown, the liquid supply component 30 also includes a second buffer structure 32. The second buffer structure 32 is connected to the liquid supply device 31. Among them, the liquid supply component 30 has a liquid supply state and a liquid return state. When the liquid supply component 30 is in the liquid supply state, the liquid in the liquid supply device 31 enters the first buffer structure 22 through the second buffer structure 32; when the liquid supply component 30 is in the liquid return state, the liquid cached in the first buffer structure 22 flows back to the second buffer structure 32. In this way, the above-mentioned setting ensures that the liquid in the liquid supply device 31 can flow into the first buffer structure 22 through the second buffer structure 32 to wet the wet curtain 21, thereby humidifying the gas; on the other hand, it ensures that the liquid cached in the first buffer structure 22 flows back to the second buffer structure 32, so that the wet curtain 21 is in a dry state and the air purifier is in a purification mode. At the same time, the second buffer structure 32 plays the role of caching liquid. If the liquid supply device 31 cannot replenish liquid in time, it can also temporarily supply liquid to the first buffer structure 22 through the second buffer structure 32 to ensure that the air purifier can operate normally.

[0036] Optionally, the air purifier further includes a fan 40 and a purification component 50. The fan 40 is disposed in the housing 10, and the fan 40 is used to draw the gas into the air duct 12 through the air inlet 11. The purification component 50 is disposed in the air duct 12, and the purification component 50 includes a filter 51 and / or a deodorizing net 52. In this way, the fan 40 is used to draw the gas outside the air purifier into the housing 10 through the air inlet 11 to provide an air source for the air purifier. The purification component 50 is used to purify foreign particles, pollutants, etc. in the gas entering the air duct 12, so that clean gas is discharged from the exhaust port.

[0037] In this embodiment, the purification component 50 includes a filter 51 and a deodorizing net 52. The filter 51 is located below the deodorizing net 52. The gas first passes through the filter 51, then passes through the deodorizing net 52, and is finally discharged through the air duct outlet 121. The filter 51 and the deodorizing net 52 are used to intercept PM2.5, VOC, bacteria, viruses and other fine substances to achieve the purpose of purifying the air.

[0038] Optionally, the deodorizing net 52 is activated carbon.

[0039] like Figure 1 As shown, the air purifier also includes an air inlet grille 70, which is disposed at the air inlet 11 and is used to filter out large particles such as hair, dandruff, and dust.

[0040] like Figure 1As shown, the air purifier has a purification mode and a humidification mode. When the liquid supply device 31 is located at the first position, the air purifier is in the humidification mode; when the liquid supply device 31 is located at the second position, the air purifier is in the purification mode. In this way, the above configuration enables the air purifier to have two operating modes. The purification mode only purifies the gas, while the humidification mode purifies and humidifies the gas to meet the different usage needs of users.

[0041] Specifically, when the liquid supply device 31 is located in the first position, the liquid supply device 31 is connected to the first cache structure 22 through the second cache structure 32 to supply liquid into the first cache structure 22, so that the liquid cached in the first cache structure 22 wets the wet curtain 21, and the wet curtain 21 humidifies the gas passing through it, so that the air purifier is in the humidification mode. When the liquid supply device 31 is located in the second position, the liquid cached in the first cache structure 22 has flowed back into the second cache structure 32, so that the wet curtain 21 is in a dry state and cannot humidify the gas passing through it. At this time, the air purifier is in a simple purification mode.

[0042] like Figure 1 As shown, the air purifier includes a lifting device 60. The liquid supply device 31 is arranged on the lifting device 60, and at least a part of the lifting device 60 can be lifted to drive the liquid supply device 31 to switch between the first position and the second position. In this way, the lifting device 60 controls the liquid supply device 31 to be lifted and lowered, so that the liquid supply device 31 can switch between the first position and the second position, thereby facilitating the control of the air purifier to switch between the humidification mode and the purification mode, reducing the user's operating difficulty and realizing the automatic lifting of the liquid supply device 31.

[0043] In this embodiment, the lifting device 60 is an X-shaped lifting platform, and the height of the liquid supply device 31 can be adjusted by adjusting the angle of the X-shaped lifting platform. In this way, the above arrangement makes the structure of the lifting device 60 simpler and easier to process, thereby reducing the processing cost of the air purifier.

[0044] It should be noted that the structure of the lifting device 60 is not limited thereto and can be adjusted according to working conditions and usage requirements. Optionally, the lifting device 60 is a linear motor, or a drive cylinder, or a lead screw nut structure, or a gear rack structure, or a conveyor belt structure or a chain structure.

[0045] Optionally, the air purifier further includes a humidity detection device. The humidity detection device is used to detect the humidity value on the surface of the wet curtain 21. When the humidity detection value of the humidity detection device is less than or equal to a preset humidity value, the air purifier is controlled to be in purification mode. In this way, the humidity on the surface of the wet curtain 21 is detected in real time by the humidity detection device. When the humidity detection value of the humidity detection device is less than or equal to a preset humidity value, the wet curtain 21 cannot humidify the gas passing through it, and the air purifier can be controlled to be in purification mode to meet the user's simple air purification needs.

[0046] Optionally, the liquid supply component 30 also includes a connecting pipe and a pump body structure, and the first cache structure 22 is connected to the second cache structure 32 through the connecting pipe. The pump body structure is arranged on the connecting pipe, and the pump body structure is used to pump the liquid entering the second cache structure 32 into the first cache structure 22; or, the pump body structure is used to pump the liquid cached in the first cache structure 22 into the second cache structure 32. In this way, the above-mentioned setting of the connecting pipe makes the connection between the first cache structure 22 and the second cache structure 32 easier and simpler, and also ensures that liquid can flow between the first cache structure 22 and the second cache structure 32. At the same time, the operating state (liquid supply state and liquid return state) of the liquid supply component 30 is controlled by the pump body structure, thereby reducing the difficulty of the user's control over the air purifier.

[0047] Optionally, one end of the connecting tube is connected to the second cache structure 32, and the first cache structure 22 has a liquid hole. The other end of the connecting tube is telescopically arranged to extend into the liquid hole or withdraw from the liquid hole. In this way, the first cache structure 22 and the second cache structure 32 can be turned on and off by controlling the other end of the connecting tube to extend into the liquid hole or withdraw from the liquid hole. At the same time, the connecting tube is telescopically arranged, and when the lifting device 60 drives the liquid supply device 31 to lift, the connecting tube can be retracted to prevent the connecting tube from interfering with the first cache structure 22 and affecting the normal lifting of the liquid supply device 31.

[0048] Optionally, the connecting pipe is a retractable plastic pipe to facilitate replacement of the connecting pipe and reduce costs.

[0049] It should be noted that the material of the connecting pipe is not limited thereto and can be adjusted according to working conditions and usage requirements. Optionally, the connecting pipe is made of rubber or stainless steel.

[0050] Optionally, the liquid-passing hole is a circular hole and there is only one of them. Thus, the above arrangement makes the first cache structure simpler, easier to process and reduces its cost.

[0051] It should be noted that the shape of the liquid passage hole is not limited thereto, and can be adjusted according to working conditions and usage requirements. Optionally, the liquid passage hole is a polygonal hole or an elliptical hole, or the liquid passage hole is a hole surrounded by straight line segments and curved line segments.

[0052] It should be noted that the number of the liquid holes is not limited thereto, and can be adjusted according to working conditions and usage requirements. Optionally, the number of the liquid holes is two, three, four, or more.

[0053] like Figure 1 and Figure 2 As shown, the first cache structure 22 has a first recess 221, at least part of the wet curtain 21 is located in the first recess 221, and a plurality of tooth-shaped portions 23 are arranged on the outer peripheral surface of the wet curtain 21. The wet curtain assembly 20 also includes a driving device and a gear structure 24. The gear structure 24 is drivingly connected to the driving device, and the gear structure 24 is meshed with the tooth-shaped portion 23. Among them, the driving device drives the gear structure 24 to move, so as to drive the wet curtain 21 to rotate, so that the wet curtain 21 is wetted by the liquid. In this way, the wet curtain 21 is rotatably arranged relative to the first cache structure 22. During the rotation of the wet curtain 21, the above arrangement ensures that the wet curtain 21 is in full contact with the liquid, thereby ensuring that the wet curtain 21 is completely wetted by the liquid. At the same time, the rotation of the wet curtain 21 is made more stable by the gear transmission, thereby improving the driving reliability of the driving device.

[0054] like Figure 1 As shown, the second buffer structure 32 has a second recess, the liquid supply device 31 is arranged in the second recess, and the liquid outlet of the liquid supply device 31 is used to communicate with the second recess. In this way, the second recess is used to accommodate the liquid supply device 31, and the overall occupied space of the liquid supply assembly 30 is reduced under the premise of ensuring that the liquid supply device 31 can communicate with the second buffer structure 32. On the one hand, it is prevented that the liquid supply device 31 will interfere with the movement of the remaining structures in the air purifier during the lifting process; on the other hand, it realizes the miniaturization design of the air purifier, so that the internal space of the housing 10 is reasonably utilized.

[0055] like Figure 1 As shown, the air inlet 11 is located below the exhaust port. In this way, after the fan 40 is started, the gas enters the air duct 12 through the air inlet 11, and flows from bottom to top in the air purifier under the suction action of the fan 40, passing through the filter 51 and the deodorizing net 52 in sequence to achieve the effect of purifying the air. At the same time, the above-mentioned setting of the exhaust port enables the air outlet of the air purifier to be located at a suitable height position to ensure that the user can breathe clean air.

[0056] Specifically, the operating modes of the air purifier are as follows:

[0057] If the air purifier is only in humidification mode, the lifting device 60 drives the liquid supply device 31 to rise to a specified position so that the liquid supply device 31 is connected to the first buffer structure 22 through the second buffer structure 32. At this time, when the wet curtain 21 is immersed in the water in the first buffer structure 22, it can absorb moisture to humidify the gas passing through it. If the air purifier is only in purification mode, the lifting device 60 drives the liquid supply device 31 down to the storage area to increase the air outlet space.

[0058] In this embodiment, the air purifier will first enter the purification mode when it is turned on. According to the selection of the operation mode, the lifting device 60 will have the following four situations during operation:

[0059] 1. Continuous purification mode

[0060] In this mode, the air purifier keeps operating in the purification mode after being turned on until it is turned off, and the lifting device 60 does not move and remains in the storage area.

[0061] 2. Continuous humidification mode

[0062] In this mode, the air purifier selects the humidification mode after being turned on and keeps operating until it is turned off. When the humidification mode is started, the lifting device 60 rises, and when it is turned off, the lifting device 60 falls.

[0063] 3. Purify first and then humidify mode

[0064] In this mode, the air purifier maintains the purification mode after being turned on, and the lifting device 60 does not move. After the air purifier has been running for a period of time, the humidification mode is selected and the lifting device 60 rises. When the air purifier is turned off, the lifting device 60 falls.

[0065] 4. Humidification first, then purification mode

[0066] In this mode, the air purifier selects the humidification mode after it is turned on, and the lifting device 60 rises. After the air purifier runs for a period of time, the humidification function is turned off, and the lifting device 60 descends. When the air purifier is turned off, the lifting device 60 does not move.

[0067] In this embodiment, the air purifier further includes a position detection device, which is used to detect the real-time position of the liquid supply device 31 .

[0068] In view of the above four situations, when the air purifier is turned off, the position detection device detects the position of the liquid supply device 31. If the liquid supply device 31 is located above the storage area, the lifting device 60 needs to be started to drive the liquid supply device 31 down to the storage area. If the liquid supply device 31 is already in the storage area, it is directly turned off. Therefore, the final state of the liquid supply device 31 is in the storage area.

[0069] like Figure 3As shown, the present application also provides an air purification method, which is applicable to the above-mentioned air purifier, and the air purification method includes:

[0070] According to the operation mode of the air purifier, the liquid supply device of the air purifier is controlled to move to a first position connected with the first cache structure to supply liquid into the first cache structure; or the liquid supply device of the air purifier is controlled to move to a second position disconnected from the first cache structure and avoiding the air outlet of the air duct; wherein the operation modes include continuous purification mode, continuous humidification mode, purification-first-then-humidification mode and humidification-first-then-purification mode.

[0071] In this embodiment, the method for controlling the air purifier to be in a continuous purification mode includes: starting the air purifier, and controlling the liquid supply device to be in a second position.

[0072] In this embodiment, the method for controlling the air purifier to be in a continuous humidification mode includes: starting the air purifier, and controlling the liquid supply device to be in a first position.

[0073] In this embodiment, the method for controlling the air purifier to be in a purification-first-then-humidification mode includes: starting the air purifier, controlling the liquid supply device to be in a second position, and after the air purifier runs for a first preset time period, starting the lifting device of the air purifier to drive the liquid supply device from the second position to the first position through the lifting device.

[0074] In this embodiment, the method for controlling an air purifier to be in a humidification-then-purification mode includes: starting the air purifier, controlling the liquid supply device to be in a first position, and after the air purifier runs for a second preset time period, obtaining a humidity detection value of a humidity detection device of the air purifier, and when the humidity detection value is less than or equal to a preset humidity value, starting a lifting device of the air purifier to drive the liquid supply device to move from the first position to the second position through the lifting device.

[0075] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0076] The liquid supply assembly can be lifted and lowered in the housing and includes a liquid supply device, which has a first position connected to the first cache structure to supply liquid to the first cache structure and a second position disconnected from the first cache structure and avoiding the air outlet of the air duct. In this way, when the liquid supply device is in the first position, the liquid supply device supplies liquid to the first cache structure to wet the wet curtain and then humidify the gas. When the liquid supply device is in the second position, the liquid supply device does not supply liquid to the first cache structure, the wet curtain is in a dry state and cannot humidify the gas. At this time, the air purifier is in purification mode. In this mode, the liquid supply device avoids the air outlet of the air duct, thereby increasing the air outlet space of the air duct, and the gas discharged from the air outlet of the air duct can directly enter the exhaust port to be discharged into the room through the exhaust port.

[0077] Compared with the water tank and wet curtain assembly of the air freshener in the prior art, the liquid supply device in the present application can be raised and lowered. When the air purifier is in purification mode, the liquid supply device avoids the air outlet of the air duct, thereby increasing the air outlet space of the air duct, solving the problem that the air outlet of the air freshener in purification mode is small and cannot meet the user's use needs, and improving the purification effect. At the same time, the above arrangement can reduce the noise of the air outlet and improve the user's use experience.

[0078] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0079] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0080] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air purifier, characterized in that: include: A housing (10) having an air inlet (11), an air outlet and an air duct (12), wherein the air inlet (11) is connected to the air outlet through the air duct (12); A wet curtain assembly (20) is arranged in the housing (10) and located at the air duct outlet (121) of the air duct (12), the wet curtain assembly (20) comprising a wet curtain (21) and a first buffer structure (22), the first buffer structure (22) being used to buffer liquid, and at least a portion of the wet curtain (21) is located in the first buffer structure (22) so that the wet curtain (21) is wetted by the liquid; A liquid supply assembly (30) is movably disposed in the housing (10), and the liquid supply assembly (30) comprises a liquid supply device (31); The liquid supply device (31) has a first position connected to the first buffer structure (22) to supply liquid into the first buffer structure (22) and a second position disconnected from the first buffer structure (22) and avoiding the air duct outlet (121); The first position is located above the second position, and the liquid supply device (31) has an air guide surface (311); wherein, when the liquid supply device (31) is in the first position, the wet curtain (21) is located between the air duct outlet (121) and the air guide surface (311), and the air guide surface (311) is arranged toward the air duct outlet (121) to guide the gas to the exhaust port.

2. The air purifier according to claim 1, characterized in that: The liquid supply assembly (30) further comprises: A second buffer structure (32) is communicated with the liquid supply device (31); The liquid supply component (30) has a liquid supply state and a liquid return state. When the liquid supply component (30) is in the liquid supply state, the liquid in the liquid supply device (31) enters the first cache structure (22) through the second cache structure (32); when the liquid supply component (30) is in the liquid return state, the liquid cached in the first cache structure (22) flows back into the second cache structure (32).

3. The air purifier according to claim 1, characterized in that: The air purifier also includes: a fan (40), disposed in the housing (10), the fan (40) being used to draw gas into the air duct (12) through the air inlet (11); A purification component (50) is arranged in the air duct (12), and the purification component (50) includes a filter screen (51) and / or a deodorizing screen (52).

4. The air purifier according to claim 1, characterized in that: The air purifier has a purification mode and a humidification mode, and when the liquid supply device (31) is located at the first position, the air purifier is in the humidification mode; When the liquid supply device (31) is located at the second position, the air purifier is in the purification mode.

5. The air purifier according to claim 4, characterized in that: The air purifier comprises: A lifting device (60), the liquid supply device (31) being arranged on the lifting device (60), and at least a part of the lifting device (60) being arranged to be liftable so as to drive the liquid supply device (31) to switch between the first position and the second position.

6. The air purifier according to claim 5, characterized in that: The air purifier also includes: A humidity detection device is used to detect the humidity value on the surface of the wet curtain (21); wherein, when the humidity detection value of the humidity detection device is less than or equal to a preset humidity value, the air purifier is controlled to be in the purification mode.

7. The air purifier according to claim 2, characterized in that: The liquid supply assembly (30) further comprises: a connecting pipe, through which the first cache structure (22) is connected to the second cache structure (32); A pump body structure is arranged on the connecting pipe, and the pump body structure is used to pump the liquid entering the second cache structure (32) into the first cache structure (22); or, the pump body structure is used to pump the liquid cached in the first cache structure (22) into the second cache structure (32).

8. The air purifier according to claim 7, characterized in that: One end of the connecting tube is connected to the second buffer structure (32), and the first buffer structure (22) has a liquid passage hole; the other end of the connecting tube is telescopically arranged to extend into the liquid passage hole or withdraw from the liquid passage hole.

9. The air purifier according to claim 1, characterized in that: The first buffer structure (22) has a first recess (221), at least a portion of the wet curtain (21) is located in the first recess (221), a plurality of tooth-shaped portions (23) are provided on the outer peripheral surface of the wet curtain (21), and the wet curtain assembly (20) further comprises: Drive device; A gear structure (24) is drivingly connected to the driving device, and the gear structure (24) is meshed with the toothed portion (23); wherein the driving device drives the gear structure (24) to move, thereby driving the wet curtain (21) to rotate, thereby causing the wet curtain (21) to be wetted by liquid.

10. The air purifier according to claim 2, characterized in that: The second cache structure (32) has a second recess, the liquid supply device (31) is arranged in the second recess, and the liquid outlet of the liquid supply device (31) is used to communicate with the second recess.

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