Air purifier

Abstract

The utility model discloses an air purifier relates to air purifier technical field, wherein, air purifier includes casing, fan, filter module and humidification module, and the casing is equipped with air duct, the air duct's air inlet and air outlet are connected, and fan, filter module and humidification module all are located in air duct, the air inlet of fan's air inlet side is connected with, and the air outlet of fan's air outlet side is connected with, and the fan is equipped with at least one, and the air inlet is equipped with at least two, and the humidification module is installed in the air inlet side of fan, and the humidification module is equipped with at least one. The technical scheme provided by the utility model can improve the humidification performance and purification performance of air purifier.

Description

Technical Field

[0001] This utility model relates to the field of air purifier technology, and in particular to an air purifier. Background Technology

[0002] In related technologies, air purifiers are equipped with filters and humidification modules to simultaneously perform filtration and humidification functions. However, adding a humidification module to the existing air duct structure design reduces the flow rate of purified air output by the device, thus failing to meet users' needs for a compact purifier with high-performance purification and humidification capabilities. Utility Model Content

[0003] The main purpose of this invention is to propose an air purifier that aims to improve the purification and humidification performance of air purifiers.

[0004] To achieve the above objectives, the air purifier proposed in this utility model includes:

[0005] The casing is provided with an air duct, an air inlet and an air outlet connecting the air duct, and the air inlet is provided with at least two;

[0006] A fan is disposed in the air duct, the air inlet side of the fan is connected to the air inlet, and the air outlet side of the fan is connected to the air outlet; the fan is provided at least one; and

[0007] A filter module and a humidification module are provided in the air duct. The humidification module is installed on the air inlet side of the fan, and there is at least one humidification module.

[0008] In one embodiment, the fan is configured as a centrifugal fan, the centrifugal fan includes a centrifugal impeller, the centrifugal impeller has two sets of blades that are axially opposite each other to form an air inlet side on both sides of the centrifugal impeller, one of the air inlet sides is connected to an air inlet, and the two sets of blades are arranged in a symmetrical or asymmetrical structure.

[0009] In one embodiment, the housing has two first sides opposite each other in the axial direction of the centrifugal fan, and two air inlets are respectively disposed on the two first sides and are connected to the two air inlet sides of the centrifugal fan in a one-to-one correspondence. At least one of the two air inlet sides of the centrifugal fan is correspondingly provided with the humidification module.

[0010] In one embodiment, the housing has two second sides opposite each other in the radial direction of the centrifugal fan, and the air outlet is provided in two locations on the two second sides.

[0011] In one embodiment, the air duct is provided with at least two, and each air duct is provided with at least two air inlet chambers. The air inlet chambers are connected to the air inlet, and the humidification module is installed in at least one of the air inlet chambers.

[0012] In one embodiment, at least four filter modules are provided, and the at least four filter modules are disposed in four air inlet chambers.

[0013] In one embodiment, at least two humidification modules are provided, and the at least two humidification modules are respectively disposed in two air inlet chambers.

[0014] In one embodiment, the two air inlet chambers located on the same side of the housing are connected to the same air inlet.

[0015] In one embodiment, there are four air inlets, and the four air inlets are connected to the four air inlet chambers in a one-to-one correspondence.

[0016] In one embodiment, the humidification module includes a wet membrane and is installed in the lower air inlet cavity. The air purifier also includes a water tank and a water pumping mechanism. The water tank is located at the bottom of the housing, and the water pumping mechanism can pump water from the water tank to the wet membrane.

[0017] In one embodiment, the housing includes a main housing, an air inlet panel and an air outlet panel disposed on the main housing, the air inlet panel having the air inlet, the air outlet panel having the air outlet, the air duct disposed on the main housing and including a volute and a channel cover plate, the air inlet chamber being disposed on the channel cover plate, the centrifugal fan being disposed on the volute, and a partition plate being disposed in the middle of the channel cover plate to divide the channel cover plate into upper and lower air inlet chambers.

[0018] In one embodiment, the air duct is provided with an air inlet cavity connecting the air inlet side of the fan and the air inlet. At least one of the air inlet cavities is equipped with the humidification module and / or the humidification module. When the same air inlet cavity is equipped with both the humidification module and the filter module, the filter module is located on the side of the humidification module closer to the air inlet.

[0019] In one embodiment, the humidification module includes a mounting bracket and a wet membrane disposed on the mounting bracket. The air purifier also includes a water tank and a water pumping mechanism. The water pumping mechanism is capable of pumping water from the water tank to the wet membrane. The mounting bracket is provided with a support structure, which is disposed between the filter module and the wet membrane to create a gap between the filter module and the wet membrane.

[0020] In one embodiment, the top of the mounting bracket is provided with a water distribution trough, and the bottom wall of the water distribution trough is provided with a plurality of water distribution holes located above the wet film. The diameter of the plurality of water distribution holes distributed sequentially in the air intake direction of the air inlet chamber is arranged to gradually decrease. The water pumping mechanism can pump water from the water tank to the water distribution trough.

[0021] In one embodiment, the top surface of the water tank is provided with a water collection trough, the bottom of the water collection trough is provided with a water inlet, the air purifier also includes a water supply pipe located above the water collection trough, the outer side of the casing is provided with a water supply port, and the water supply port is connected to the water collection trough of the water tank through the water supply pipe.

[0022] In one embodiment, the bottom of the mounting bracket is provided with a return groove, the bottom end of the wet membrane is inserted into the return groove, the bottom wall of the return groove is provided with a return hole, the water tank is located below the return hole and is provided with an inlet communicating with the return hole.

[0023] In one embodiment, the mounting bracket is configured as a frame structure and has an annular groove on its inner circumferential surface. The periphery of the wet membrane is embedded in the annular groove. The top of the annular groove is connected to the water distribution hole, and the bottom of the annular groove is configured as the return groove.

[0024] In one embodiment, the bottom wall of the air inlet cavity is provided with an overflow prevention groove, and the groove wall of the overflow prevention groove is provided with a first flow passage hole that communicates with the water inlet. The overflow prevention groove is located on the side of the return hole near the air inlet.

[0025] In one embodiment, the air inlet chambers are provided with at least four, the humidification modules are provided with at least two, and the at least two humidification modules are respectively disposed in two of the air inlet chambers; and / or, the filter modules are provided with at least four, and the at least four filter modules are respectively disposed in four of the air inlet chambers.

[0026] The technical solution of this utility model increases the overall air intake area of ​​the air purifier by increasing the number of air inlets, thereby increasing the airflow rate into the air purifier per unit time. This compensates for the increased energy loss of the intake airflow caused by the addition of the humidification module, which in turn leads to a decrease in the output purified airflow. Thus, the overall humidification and purification capacity of the equipment is improved, i.e., the humidification and purification performance is enhanced to meet users' needs for rapid humidification and purification. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of an embodiment of the air purifier provided by this utility model;

[0029] Figure 2 for Figure 1 The front view of the embodiment shown;

[0030] Figure 3 for Figure 2 Sectional view at point AA;

[0031] Figure 4 for Figure 1 Exploded view of the embodiment shown;

[0032] Figure 5 for Figure 4 Exploded view of the middle section of the parts;

[0033] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0034] Figure 7 for Figure 4 An installation diagram of the central channel cover, filter module, and humidification module;

[0035] Figure 8 for Figure 7 A cross-sectional view of the structure shown;

[0036] Figure 9 for Figure 8 A magnified view of a section at point C;

[0037] Figure 10 for Figure 8 The cross-sectional view at point DD shows that the filter module and humidification module are hidden at this point.

[0038] Explanation of icon numbers:

[0039] 100. Housing; 101. Air inlet; 102. Air outlet; 103. First side panel; 104. Second side panel; 105. Water inlet; 110. Air duct; 120. Volute; 130. Channel cover; 131. Air inlet cavity; 132. Overflow preventer; 133. First overflow hole; 134. Second overflow hole; 135. Partition; 136. Pull-out port; 140. Air inlet panel; 150. Air outlet panel;

[0040] 200. Humidification module; 210. Mounting bracket; 211. Support structure; 212. Water distribution trough; 213. Water distribution hole; 214. Return trough; 215. Return hole; 216. Annular trough; 217. Main frame; 218. Support frame; 220. Wet film; 230. Water guide pipe; 231. Extension pipe;

[0041] 300. Filtering module;

[0042] 400. Fan; 410. Blade;

[0043] 500, Water tank; 501, Water inlet; 502, Water collection trough.

[0044] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0046] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0047] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0048] In related technologies, air purifiers are equipped with filters and humidification modules to simultaneously perform filtration and humidification functions. However, based on the original duct structure design, with a fixed fan performance and air intake area, adding a humidification module will increase the energy loss of the intake airflow, resulting in a decrease in the flow rate of purified air output by the device. Therefore, it cannot meet users' needs for a small-sized purifier with high-performance purification and humidification.

[0049] In view of this, the present invention proposes an air purifier.

[0050] Please see Figures 1 to 3 In one embodiment of the present invention, the air purifier includes a housing 100, a fan 400, a filter module 300, and a humidification module 200. The housing 100 is provided with an air duct 110, an air inlet 101 connected to the air duct 110, and an air outlet 102. The fan 400, the filter module 300, and the humidification module 200 are all located in the air duct 110. The air inlet side of the fan 400 is connected to the air inlet 101, and the air outlet side of the fan 400 is connected to the air outlet 102. At least one fan 400 is provided.

[0051] Specifically, driven by the fan 400, air enters the air duct 110 through the air inlet 101, is then filtered and purified by the filter module 300 and humidified by the humidification module 200, and finally flows out through the air outlet 102. In this way, the air purifier achieves air filtration, purification, and humidification to meet the user's air purification and humidification needs.

[0052] The arrangement of the filter module 300 and the humidification module 200 can be selected as needed. For example, the filter module 300 and the humidification module 200 can both be arranged on the air inlet side of the fan 400, or both can be arranged on the air outlet side of the fan 400, or one of them can be arranged on the air inlet side of the fan 400 and the other on the air outlet side of the fan 400.

[0053] Please see Figure 3 Optionally, the air inlet 101 has at least two inlets. By increasing the number of inlets, the overall air intake area of ​​the air purifier can be increased, thereby increasing the airflow rate into the air purifier per unit time. This compensates for the increased energy loss of the intake airflow caused by the addition of the humidification module 200, which in turn leads to a decrease in the output purified airflow. Thus, the overall humidification and purification capacity of the device can be improved, i.e., humidification and purification performance can be enhanced to meet the user's needs for rapid humidification and purification.

[0054] Optionally, the humidification module 200 is installed on the air inlet side of the fan 400, and at least one humidification module 200 is provided. Specifically, in this embodiment, there are two air inlets 101 and two humidification modules 200, with one humidification module 200 installed inside one air inlet 101 and the other humidification module 200 installed inside the other air inlet 101. Thus, by increasing the number of air inlets 101 and humidification modules 200, the airflow through the humidification module 200 per unit time can be increased, thereby improving the overall humidification capacity of the equipment, that is, improving humidification performance to meet the user's rapid humidification needs.

[0055] Please see Figure 3 and Figure 4 Optionally, the fan (400) is configured as a centrifugal fan, which includes a centrifugal impeller with two sets of blades 410 facing each other axially (i.e., in the front-to-back direction in the figure), forming an air inlet side on both sides of the centrifugal impeller, with each air inlet side corresponding to an air inlet (101). The two sets of blades 410 can be arranged in a symmetrical or asymmetrical structure. That is, in this embodiment, the fan 400 is a centrifugal fan with double-sided air intake. Its two sets of blades 410 rotate in the same direction and at the same speed under the drive of the same motor, simultaneously drawing in air from both sides of the centrifugal fan 400's axial direction, and then radially throwing the air towards the duct 110 and the air outlet 102. Thus, the centrifugal fan 400 can increase the airflow of the equipment, thereby achieving faster filtration and humidification without significantly increasing the size of the equipment. Of course, in other embodiments, the fan 400 may also be configured as a centrifugal fan 400 with a single set of blades 410, and two centrifugal fans 400 may be provided and arranged opposite each other along the axial direction; or, the fan 400 may also be configured as a cross-flow fan 400 or an axial flow fan 400, etc.

[0056] The two sets of blades 410 can be formed as a single unit or assembled as a single unit, and are driven by the same drive motor. Please refer to [link / reference]. Figure 3 In this embodiment, two sets of blades 410 are respectively formed on two opposite sides of a mounting plate to construct a centrifugal impeller, which is driven by a drive motor (not shown in the attached drawings). When the centrifugal impeller is a backward-curved type, a guide ring can also be provided at the end of the blades 410 furthest from the mounting plate.

[0057] Please see Figure 1 and Figure 3Optionally, the housing 100 has two first side surfaces 103 facing each other in the axial direction of the centrifugal fan 400. Two air inlets 101 are respectively disposed on the two first side surfaces 103 and are connected to the two air inlet sides of the centrifugal fan 400 respectively. At least one of the two air inlet sides of the centrifugal fan is provided with a humidification module 200. Optionally, in this embodiment, both air inlet sides of the centrifugal fan 400 are provided with a humidification module 200, that is, the two humidification modules 200 are respectively disposed on opposite sides of the centrifugal fan 400 in the axial direction, which is beneficial to reduce the width dimension of the equipment in the axial direction, thereby reducing the overall volume.

[0058] Optionally, the housing 100 has two opposing second side surfaces 104 in the radial direction (i.e., the left-right direction in the figure) of the centrifugal fan 400, and two air outlets 102 are provided, respectively located on the two second side surfaces 104. In this embodiment, the housing 100 has a cuboid configuration and four side surfaces, including two first side surfaces 103 and two second side surfaces 104. The two first side surfaces 103 are for air intake and the two second side surfaces 104 are for air exhaust. That is, the device in this embodiment has a configuration with air intake and exhaust on both sides, which can make full use of the internal arrangement space of the device and improve the air volume and air exhaust coverage. Secondly, the centrifugal impeller of the centrifugal fan 400 can generate two airflows flowing towards the two air outlets 102 with one rotation, which can also improve the air exhaust efficiency of the centrifugal fan 400.

[0059] Of course, in other embodiments, there may be only one air outlet 102, or three or more, and the air outlet 102 may also be located on the top surface of the housing 100. The housing 100 may also adopt other configurations, such as a cylinder, etc., which are not specifically limited in this application.

[0060] Please see Figure 4 and Figure 5 Optionally, the air duct 110 has at least two sections, each with at least two air inlet chambers 131 connected to the air inlet 101. At least one air inlet chamber 131 contains a humidifying module 200. That is, there can be multiple air inlet chambers 131. Specifically, at least one air inlet chamber 131 may contain only a humidifying module 200, while the remaining air inlet chambers 131 contain a filter module 300, or a combination of a filter module 300 and a humidifying module 200; alternatively, at least one air inlet chamber 131 may contain only a filter module 300, while the remaining air inlet chambers 131 contain humidifying modules 200, or a combination of a filter module 300 and a humidifying module 200; or all air inlet chambers 131 may contain both a humidifying module 200 and a filter module 300. Furthermore, the number of humidifying modules 200 or filter modules 300 installed in each air inlet chamber 131 is not limited; it can be one, two, or more than two.

[0061] In this embodiment, there are two air ducts 110, and each air duct 110 has two air inlet chambers 131, so there are a total of four air inlet chambers 131 in the two air ducts 110. Among these four air inlet chambers 131, the upper two air inlet chambers 131 are equipped with one, two or more filter modules 300, while the lower two air inlet chambers 131 are equipped with both filter modules 300 and humidification modules 200. That is, the humidification module 200 is preferentially installed in the lower air inlet chambers 131.

[0062] In one embodiment, at least two centrifugal fans 400 are provided, spaced apart along the extension direction of the casing 100, with each centrifugal fan 400 correspondingly disposed within an air duct 110. The two air inlet chambers 131 of the same air duct 110 respectively connect to the two air inlet sides of the centrifugal fan 400, and the airflow within the two air ducts 110 is independent. Thus, by increasing the number of centrifugal fans 400, the overall performance of the fans can be improved, thereby further increasing the air output of the equipment. Of course, in other embodiments, only one centrifugal fan may be provided.

[0063] It should be noted that the extension direction of the housing 100 refers to the direction with the largest dimension. For example, in this embodiment, the vertical dimension of the housing 100 is the largest (i.e., a vertical device), so the extension direction of the housing 100 is the vertical direction. As another example, in other embodiments, the horizontal dimension of the housing 100 is the largest (i.e., a horizontal device), then the extension direction of the housing 100 is the horizontal direction.

[0064] Please see Figure 3 and Figure 4 Optionally, at least two humidification modules 200 are provided, with each of the at least two humidification modules 200 disposed in one of the two air inlet chambers 131. Thus, both the air inlet 101 and the humidification module 200 are provided in pairs, with one humidification module 200 installed inside one air inlet 101 and the other humidification module 200 installed inside the other air inlet 101. By increasing the number of air inlets 101 and humidification modules 200, the airflow through the humidification modules 200 per unit time can be increased, thereby improving the overall humidification capacity of the equipment, i.e., enhancing humidification performance to meet the user's rapid humidification needs.

[0065] Please see Figure 3 and Figure 4Optionally, the filter module (300) is provided with at least four, and the at least four filter modules 300 are distributed in the four air inlet chambers 131. That is, the air inlet chambers 131 of both air ducts 110 are equipped with filter modules 300, which can increase the overall effective filtration area of ​​the device and thus improve the overall air purification performance. The filter module 300 can be a single filter element, such as a HEPA filter, or a composite filter element, which is not specifically limited in this application. Of course, in other embodiments, the number of filter modules 300 can also be configured to other values, such as one, two, three, or five.

[0066] Optionally, there are two air inlets 101, with two air inlets 131 located on the same side of the housing 100 connected to the same air inlet 101. That is, the two air inlets 131 share one air inlet 101. Specifically, the air inlet 101 on the front of the housing 100 is connected to the two air inlets 131 located on the front side of the upper and lower air ducts 110, and the air inlet 101 on the back of the housing 100 is connected to the two air inlets 131 located on the rear side of the upper and lower air ducts 110. This structure is simple and easy to implement, which helps to simplify the structure of the equipment and reduce its manufacturing cost. Of course, in other embodiments, the two air inlets 131 located on the same side of the housing 100 can also be connected to different air inlets 101. For example, there are four air inlets 101, with each of the four air inlets 101 corresponding to one of the four air inlets 131.

[0067] Please see Figure 4 Optionally, the housing 100 includes a main housing, an air inlet panel 140 and an air outlet panel 150 disposed on the main housing. The air inlet panel 140 has an air inlet 101, and the air outlet panel 150 has an air outlet 102. An air duct 110 is disposed on the main housing and includes a connecting volute 120 and a channel cover 130. An air inlet chamber 131 is disposed on the channel cover 130, and a centrifugal fan 400 is disposed on the volute 120. A partition 135 is provided in the middle of the channel cover 130 to divide the channel cover 130 into upper and lower air inlet chambers 131. The air inlet panel 140 may be detachably connected to the main housing for easy maintenance or replacement of the humidification module 200 and the filter module 300. Two channel covers 130 are provided, located on the front and rear sides of the housing 100 respectively. Figure 8 Only one passage cover plate 130 is shown in the diagram.

[0068] Please see Figure 5Optionally, the humidification module 200 includes a wet film 220, which is installed in the lower air inlet cavity 131. The air purifier also includes a water tank 500 and a water pumping mechanism. The water tank 500 is located at the bottom of the housing 100, and the water pumping mechanism can pump water from the water tank 500 to the wet film 220. That is, humidification of the air is achieved through the wet film 220, which makes the humidification effect more uniform and reduces the risk of the humidified air causing the indoor floor or walls to become damp. Secondly, placing the water tank 500 at the bottom of the device lowers the center of gravity of the device, thereby improving the stability of the device. Furthermore, placing the wet film 220 in the lower middle part of the device shortens the pumping path length of the water pumping mechanism and simplifies its structure, thereby helping to reduce the manufacturing difficulty and cost of the device. Of course, in other embodiments, the water tank 500 can also be arranged in other positions of the housing 100, and the humidification module 200 can also be configured in other forms, such as an ultrasonic atomizer.

[0069] Specifically, please refer to Figure 3 , Figure 4 and Figure 8 In this embodiment, four filter modules 300 and two humidification modules 200 are provided. The two air ducts 110 are distributed vertically. Each of the two air inlet chambers 131 of the lower air duct 110 is equipped with one filter module 300 and one humidification module 200, while each of the two air inlet chambers 131 of the upper air duct 110 is equipped with one filter module 300. This maximizes the effective filtration and humidification area of ​​the equipment, thereby improving its purification and humidification performance and meeting the user's needs for rapid humidification and purification. Of course, in other embodiments, the number of filter modules 300 and humidification modules 200 can be configured to other values.

[0070] Please see Figure 8 Optionally, the air duct 110 has an air inlet side connected to the fan 400 and an air inlet cavity 131 for the air inlet 101. At least one air inlet cavity 131 houses a humidification module 200 and a filter module 300, with the filter module 300 located on the side of the humidification module 200 closest to the air inlet 101. That is, the filter module 300 and the humidification module 200 are installed in the same air inlet cavity 131, and the filter module 300 is located downstream of the humidification module 200. This allows for a more compact structure while improving the purification and humidification performance of the equipment. Alternatively, in other embodiments, the humidification module 200 and the filter module 300 can be separately housed in different air inlet cavities 131; that is, at least one air inlet cavity 131 houses the humidification module 200, and at least one air inlet cavity 131 houses the filter module 300.

[0071] Please see Figure 5Optionally, the humidification module 200 includes a mounting bracket 210 and a wet membrane 220 disposed on the mounting bracket 210. The air purifier also includes a water tank 500 and a water pumping mechanism, which can pump water from the water tank 500 to the wet membrane 220. That is, air humidification is achieved through the wet membrane 220.

[0072] Please see Figure 3 and Figure 6 Optionally, the mounting bracket 210 is provided with a support structure 211, which is disposed between the filter module 300 and the wet membrane 220 to create a gap between them. In this way, the support structure 211 effectively separates the filter module 300 and the wet membrane 220, ensuring that moisture on the wet membrane 220 does not penetrate the filter module 300, thereby preventing the filter module 300 from malfunctioning. Of course, in other embodiments, the support structure 211 can be disposed on the filter module 300 or the housing 100, or it can be omitted entirely.

[0073] Please see Figure 6 Optionally, the top of the mounting bracket 210 is provided with a water distribution trough 212, and the bottom wall of the water distribution trough 212 is provided with multiple water distribution holes 213 located above the wet membrane 220. The pumping mechanism can pump water from the water tank 500 into the water distribution trough 212. Specifically, after the water in the water tank 500 is transported to the water distribution trough 212 located above the water tank 500 by the pumping mechanism, it will flow along the water distribution trough 212 and flow through the multiple water distribution holes 213 to the wet membrane 220 to wet the wet membrane 220. In this way, the structure is simple and easy to implement.

[0074] It is understandable that, since the water distribution trough 212 is located within the air inlet cavity 131, under the influence of the airflow, the water in the water distribution trough 212 tends to flow away from the air inlet 101, resulting in uneven water distribution in the air inlet direction. Specifically, more water tends to accumulate on the side of the water distribution trough 212 away from the air inlet 101, potentially leading to uneven water distribution flowing into the wet membrane 220. Therefore, please refer to... Figure 6Optionally, the apertures of the plurality of water distribution holes 213 sequentially distributed in the air intake direction of the air intake cavity 131 are arranged in a gradually decreasing manner. That is, the apertures of the water distribution holes 213 farther away from the air inlet 101 are smaller than the apertures of the water distribution holes 213 closer to the air inlet 101. In this way, even if the water in the water distribution tank 212 is affected by the air intake airflow and more water accumulates on the side farther away from the air inlet 101, the water flow rate into the wet film 220 through the water distribution holes 213 in this area will remain basically the same as the water flow rate into the wet film 220 through the water distribution holes 213 in the area closer to the air inlet 101 because the apertures of the water distribution holes 213 in this area are smaller. This makes the water distribution effect of the wet film 220 more uniform. Of course, in other embodiments, the apertures of the plurality of water distribution holes 213 sequentially distributed in the air intake direction of the air intake cavity 131 may also be arranged in a gradually increasing manner, or the apertures of the plurality of water distribution holes 213 may be configured to be the same.

[0075] The air intake direction of the air intake cavity 131 is the direction of the airflow as it passes through the air intake cavity 131. It should be noted that, for Figure 6 The air intake cavity 131 shown at the front of the housing 100 refers to the air intake direction from front to back. Figure 6 Regarding the air intake chamber 131 located at the rear of the housing 100 (not shown), its air intake direction refers to the direction from rear to front. That is, the air intake direction of the air intake chamber 131 is a relative concept.

[0076] Please see Figure 8 Optionally, the water pumping mechanism includes a water pump (not shown in the attached drawings), a water delivery pipe (not shown in the attached drawings), and a water guide pipe 230 connected in sequence. The water guide pipe 230 is located on one side of the water distribution trough 212 and extends along the length of the water distribution trough 212. An extension pipe 231 protrudes from the pipe wall of the water guide pipe 230 towards the water distribution trough 212 and extends into the opening of the water distribution trough 212. The water guide pipe 230 is located in the gap between the bottom wall of the upper air inlet chamber 131 and the top wall of the lower air inlet chamber 131 to fully utilize the installation space within the housing 100. The water pump can be directly installed in the water tank 500 or indirectly connected to the water tank 500 via a water pipe.

[0077] There are several ways to replenish water into the water tank 500; for example, please refer to [link / reference]. Figure 8 and Figure 10Optionally, the top surface of the water tank 500 is provided with a water collection trough 502, and the bottom of the water collection trough 502 is provided with a water inlet 501. The air purifier also includes a water supply pipe (not shown in the attached drawings) located above the water collection trough 502, and a water supply port 105 is provided on the outer side of the casing 100. The water supply port 105 is connected to the water collection trough 502 of the water tank 500 through the water supply pipe. Specifically, the water supply port 105 can be opened on the top surface of the casing 100, and the water supply pipe extends from top to bottom to the top of the water collection trough 502. In this way, the water supply port 105 is in a high position, which makes it convenient for users to add water to it, and the structure is simple and easy to implement. Of course, other forms are possible in other embodiments, and this application does not specifically limit them.

[0078] Please see Figure 7 and Figure 9 Optionally, the air inlet panel 140 is detachably connected to the main housing, and the bottom of the channel cover 130 is provided with a pull-out opening 136. The water tank 500 can pass through the pull-out opening 136 and be inserted into the main housing to be installed below the humidification module 200. In this way, when the water tank 500 may develop scale after a period of use, the user can remove the air inlet panel 140 and then pull the water tank 500 out from the pull-out opening 136 for cleaning.

[0079] Please see Figure 6 and Figure 9 Optionally, the bottom of the mounting bracket 210 is provided with a return groove 214, the bottom end of the wet membrane 220 is inserted into the return groove 214, the bottom wall of the return groove 214 is provided with a return hole 215, and the water tank 500 is located below the return hole 215 and is provided with an inlet 501 communicating with the return hole 215. In this way, the return groove 214 collects the excess water flowing out of the wet membrane 220 and allows this water to return to the water tank 500, thus forming a water circulation between the wet membrane 220 and the water tank 500, thereby saving water resources. In addition, the return groove 214 can also provide support and constraint for the wet membrane 220, thereby improving the installation reliability and stability of the wet membrane 220. Of course, in other embodiments, the return groove 214 may not be provided.

[0080] Please refer to the following: Figure 5Optionally, the mounting bracket 210 is configured as a frame structure, with an annular groove 216 on its inner circumferential surface. The periphery of the wet membrane 220 is embedded in the annular groove 216. The top of the annular groove 216 is connected to the water distribution hole 213, and the bottom of the annular groove 216 is configured as a return groove 214. Thus, the frame-shaped mounting bracket 210 has good structural strength and rigidity, and the periphery of the wet membrane 220 embedded in the annular groove 216 provides good support and constraint for the wet membrane 220, thereby improving the installation reliability and stability of the wet membrane 220. Furthermore, the structure is simple and easy to implement. Of course, in other embodiments, the annular groove 216 may not be provided. For example, the mounting bracket 210 may be configured as two separate mounting plates, located at the upper and lower ends of the wet membrane 220. The upper mounting plate has a water distribution groove 212, and the lower mounting plate has a return groove 214.

[0081] Please see Figure 6 and Figure 9 The mounting bracket 210 includes a main frame 217 and a support frame 218. An annular groove 216 is disposed on the main frame 217. The support frame 218 is connected to the side of the main frame 217 near the air inlet 101 and is configured as a support structure 211. The periphery of the filter module 300 abuts against the support frame 218. Thus, the frame-like support frame 218 can more reliably abut against the outer periphery of the filter module 300, reduce the air inlet pressure, and has a simple and easy-to-implement structure. Of course, in other embodiments, the support structure 211 can also be a support protrusion on the main frame 217, such as a rib, lug, or boss.

[0082] Please see Figure 6 and Figure 9 Optionally, the bottom wall of the air inlet cavity 131 is provided with an overflow prevention groove 132. The groove wall of the overflow prevention groove 132 is provided with a first flow-through hole 133 communicating with the water inlet 501. The overflow prevention groove 132 is located on the side of the return hole 215 near the air inlet 101. Specifically, there are multiple first flow-through holes 133, which are distributed in opposite directions along the length of the overflow prevention groove 132. Even if the water in the return groove 214 flows to the bottom wall of the air inlet cavity 131 and flows towards the air inlet 101, it will flow into the overflow prevention groove 132 and will not be able to continue flowing outward to the outside of the equipment. Secondly, the water in the overflow prevention groove 132 will flow back to the water inlet 501 through the first flow-through hole 133. In this way, the overflow prevention groove 132 can prevent the water in the return groove 214 from accidentally overflowing to the outside of the equipment, and the structure is simple and easy to implement. Of course, in other embodiments, the overflow prevention groove 132 may not be provided.

[0083] Please see Figure 6 , Figure 9 and Figure 10Optionally, multiple return holes 215 are spaced apart along the length of the return channel 214. At the end of the air inlet chamber 131 furthest from the air inlet 101, a second flow-through hole 134 is provided corresponding to the return holes 215, and the second flow-through hole 134 is axially close to the return holes 215. In this way, water flowing out of the return holes 215 will preferentially flow into the second flow-through hole 134, reducing the amount of water flowing into the overflow prevention channel 132, thereby reducing the problem of excessive water accumulation on the wet film 220 leading to overflow. The overflow prevention channel 132, the first flow-through hole 133, and the second flow-through hole 134 can be integrally formed on the channel cover plate 130 to simplify the equipment structure and assembly process.

[0084] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An air purifier, characterized in that, include: The casing is provided with an air duct, an air inlet and an air outlet connecting the air duct, and the air inlet is provided with at least two; A fan is disposed in the air duct, the air inlet side of the fan is connected to the air inlet, and the air outlet side of the fan is connected to the air outlet; the fan is provided at least one; and A filter module and a humidification module are provided in the air duct. The humidification module is installed on the air inlet side of the fan, and there is at least one humidification module.

2. The air purifier as described in claim 1, characterized in that, The fan is configured as a centrifugal fan, which includes a centrifugal impeller. The centrifugal impeller has two sets of blades that are axially opposite each other to form an air inlet side on both sides of the centrifugal impeller. Each air inlet side is connected to an air inlet. The two sets of blades are arranged in a symmetrical or asymmetrical structure.

3. The air purifier as described in claim 2, characterized in that, The housing has two first sides opposite each other in the axial direction of the centrifugal fan. The two air inlets are respectively disposed on the two first sides and are connected to the two air inlet sides of the centrifugal fan in a one-to-one correspondence. At least one of the two air inlet sides of the centrifugal fan is correspondingly provided with the humidification module. And / or, the housing has two second sides opposite each other in the radial direction of the centrifugal fan, and the air outlet is provided in two locations on the two second sides.

4. The air purifier as described in claim 2, characterized in that, The air duct is provided with at least two, and each air duct is provided with at least two air inlet chambers. The air inlet chambers are connected to the air inlet, and the humidification module is installed in at least one of the air inlet chambers.

5. The air purifier as described in claim 4, characterized in that, The filter module is provided with at least four, and the at least four filter modules are respectively disposed in the four air inlet chambers; And / or, the humidification module is provided with at least two, and the at least two humidification modules are respectively disposed in two air inlet chambers; And / or, there are two air inlets, and the two air inlets located on the same side of the housing are connected to the same air inlet; or, there are four air inlets, and the four air inlets are connected to the four air inlets one by one. And / or, the humidification module includes a wet membrane and is installed in the lower air inlet cavity, and the air purifier also includes a water tank and a water pumping mechanism. The water tank is located at the bottom of the housing, and the water pumping mechanism can pump water from the water tank to the wet membrane. And / or, the housing includes a main housing, an air inlet panel and an air outlet panel disposed on the main housing, the air inlet panel is provided with the air inlet, the air outlet panel is provided with the air outlet, the air duct is disposed on the main housing and includes a volute and a channel cover plate connected to it, the air inlet chamber is disposed on the channel cover plate, the centrifugal fan is disposed on the volute, and a partition is provided in the middle of the channel cover plate to divide the channel cover plate into upper and lower air inlet chambers; And / or, at least two centrifugal fans are provided, and the at least two centrifugal fans are distributed at intervals along the extension direction of the casing, with one centrifugal fan correspondingly disposed in one of the air ducts.

6. The air purifier as described in claim 1, characterized in that, The air duct is provided with an air inlet cavity that connects the air inlet side of the fan and the air inlet. At least one of the air inlet cavities is equipped with the humidification module and / or the humidification module. When the same air inlet cavity is equipped with both the humidification module and the filter module, the filter module is located on the side of the humidification module closer to the air inlet.

7. The air purifier as described in claim 6, characterized in that, The humidification module includes a mounting bracket and a wet membrane disposed on the mounting bracket. The air purifier also includes a water tank and a water pumping mechanism. The water pumping mechanism can pump water from the water tank to the wet membrane. The mounting bracket is provided with a support structure, which is disposed between the filter module and the wet membrane to create a gap between them.

8. The air purifier as described in claim 7, characterized in that, The top of the mounting bracket is provided with a water distribution trough, and the bottom wall of the water distribution trough is provided with a plurality of water distribution holes located above the wet film. The diameter of the plurality of water distribution holes (213) distributed sequentially in the air intake direction of the air inlet cavity is gradually decreasing. The water pumping mechanism can pump the water in the water tank to the water distribution trough. And / or, the top surface of the water tank is provided with a water collection trough, the bottom of the water collection trough is provided with a water inlet, the air purifier also includes a water supply pipe located above the water collection trough, the outer side of the casing is provided with a water supply port, and the water supply port is connected to the water collection trough of the water tank through the water supply pipe.

9. The air purifier as described in claim 7, characterized in that, The bottom of the mounting bracket is provided with a return groove, the bottom end of the wet membrane is inserted into the return groove, the bottom wall of the return groove is provided with a return hole, the water tank is located below the return hole and is provided with an inlet that connects to the return hole.

10. The air purifier as described in claim 9, characterized in that, The mounting bracket is configured as a frame structure and has an annular groove on its inner circumferential surface. The periphery of the wet film is embedded in the annular groove, and the bottom of the annular groove is configured as the return groove. And / or, the bottom wall of the air inlet cavity is provided with an overflow prevention groove, the groove wall of the overflow prevention groove is provided with a first flow hole that communicates with the water inlet, and the overflow prevention groove is located on the side of the return hole near the air inlet.

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