humidifier

Abstract

A humidifier includes a housing, a water tank disposed within the housing, a drum mounted within the water tank, a drive assembly for rotating the drum, a partition assembly disposed within the housing, and a fan assembly, wherein the fan assembly is mounted above the partition assembly and the water tank is located below the partition assembly. The housing is provided with an air inlet and an exhaust port, the partition assembly includes an upper partition, the exhaust port and the air inlet are located on upper and lower sides of the upper partition, respectively, the upper partition is provided with an opening communicating with the air inlet, the fan assembly connects the opening and the exhaust port, and the fan assembly is used to drive air drawn in through the air inlet to flow out through the water tank and the opening and out of the exhaust port. The present invention drives the water in the water tank by rotating the drum, and uses the opening of the partition assembly to connect the exhaust port and the air inlet located on upper and lower sides of the upper partition, so that the air drawn in through the air inlet fully contacts the water in the water tank before being discharged, thereby unifying the airflow direction within the humidifier and improving the humidification effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of humidifiers, and more particularly, relates to a humidifier. Background Art

[0002] In daily life, dry air makes it difficult for dust in the air to settle, resulting in air pollution. Living in such a dry air environment for a long time will not only affect human skin and breathing, but will also further affect people's sleep quality and physical health, affecting people's quality of life. In order to make the indoor air fresher and more comfortable, and to meet the requirements of different people, a humidifier is usually used to adjust the humidity of the indoor air. The existing humidifier includes a shell, a water tank and a fan. The water tank and the fan are located in the inner cavity of the shell. The inner cavity of the shell includes an air outlet. The air outlet includes a first air outlet and a second air outlet. The first air outlet is connected from the fan to the water tank, and the second air outlet is connected from the water tank to the air outlet. When the fan blows air in from the first air outlet, due to the poor directionality of the airflow, the air can flow freely in the inner cavity of the shell, reducing the humidification effect. Summary of the Invention

[0003] The object of the present invention is to provide a humidifier, including but not limited to solving the technical problem of poor humidification effect in the prior art.

[0004] To solve the above technical problems, an embodiment of the present invention provides a humidifier, comprising a shell, a water tank arranged in the shell, a drum installed in the water tank, a driving assembly for driving the drum to rotate, a partition assembly and a fan assembly arranged in the shell, the fan assembly is installed on the upper side of the partition assembly, and the water tank is located on the lower side of the partition assembly; an air inlet and an exhaust port are provided on the shell, the partition assembly comprises an upper partition, the exhaust port and the air inlet are respectively located on the upper and lower sides of the upper partition, the upper partition is provided with an opening connected to the air inlet, the fan assembly connects the opening and the exhaust port, and the fan assembly is used to drive the air inhaled by the air inlet to flow out from the exhaust port through the water tank and the opening.

[0005] Furthermore, the drum includes a water absorption cylinder folded from an evaporation layer and a rotating shaft for supporting the water absorption cylinder.

[0006] Furthermore, the drum further comprises two end covers respectively supporting the two ends of the water suction cylinder, and the rotating shaft is arranged on the end covers.

[0007] Furthermore, at least one of the end covers is provided with an air inlet hole communicating with the inner cavity of the drum.

[0008] Furthermore, the driving assembly includes a first motor mounted on the partition assembly and a driving gear connected to the first motor; and a driven gear meshing with the driving gear is provided on the rotating shaft.

[0009] Furthermore, the partition assembly further includes an air outlet pipe provided on the lower side of the upper partition, one end of the air outlet pipe is connected to the opening, and the other end of the air outlet pipe extends toward the side of the drum.

[0010] Furthermore, the lower end of the air outlet pipe has an arc-shaped groove adapted to the side surface of the drum.

[0011] Furthermore, the partition assembly also includes a grille arranged below the upper partition and a lower partition extending outward from the lower end of the grille, the lower partition is placed on the water tank, and the grille is provided with an air inlet duct connecting the air inlet and the water tank.

[0012] Furthermore, the air inlet of the shell is arranged between the upper partition plate and the lower partition plate.

[0013] Furthermore, the fan assembly includes a volute, fan blades installed in the volute, a second motor driving the fan blades and a fixing base supporting the second motor. The volute is connected to the opening and the exhaust port, and the fixing base is installed on the volute.

[0014] Furthermore, a pressure cover is provided on the fixing seat, and the pressure cover and the fixing seat form a first cavity for sealing the second motor.

[0015] Furthermore, the top of the pressure cover is buckled with the inner side of the shell to form a second cavity for accommodating the circuit board.

[0016] Furthermore, a liquid level sensor is provided on one side of the water tank, and the liquid level sensor is used to detect the water level of the water tank; an indicator light for indicating the liquid level or a transmitter for sending liquid level information to an intelligent terminal is installed on the shell.

[0017] Furthermore, the water tank is provided with a first top contact electrically connected to the liquid level sensor, and the partition assembly is provided with a second top contact detachably connected to the first top contact.

[0018] The humidifier provided by the present invention uses an upper partition to separate the exhaust port and the air inlet. The air inhaled from the air inlet first flows through the water tank and then flows out through the fan assembly and the exhaust port, reducing the air discharged without flowing through the water tank, and the air flow direction is unified; the rotation of the drum in the water tank drives the water, and the inhaled air is fully mixed with the water when flowing through the water tank and then discharged, thereby improving the humidification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a humidifier provided in an embodiment of the present invention;

[0021] Figure 2 for Figure 1 Exploded view of the humidifier;

[0022] Figure 3 for Figure 2 Schematic diagram of the structure of the middle and lower shells, water tank and drum;

[0023] Figure 4 for Figure 2 Exploded view of the middle drum;

[0024] Figure 5 for Figure 2 Schematic diagram of the three-dimensional structure of the middle partition assembly;

[0025] Figure 6 for Figure 5 A schematic diagram of the three-dimensional structure of the middle partition assembly cut along the AA section line;

[0026] Figure 7 for Figure 1 Top view of the humidifier;

[0027] Figure 8 for Figure 7 Cross-sectional view of the middle humidifier along BB;

[0028] Figure 9 for Figure 7 Cross-sectional view of the middle humidifier along CC;

[0029] Figure 10 for Figure 9 Enlarged view of point D in the middle;

[0030] Figure 11 A schematic diagram of a humidifier including a liquid level sensor provided in an embodiment of the present invention;

[0031] Figure 12 This is a circuit diagram of the liquid level sensor provided by the present invention.

[0032] Among them, the reference numerals in the figures are:

[0033] 11 - housing, 1101 - air inlet, 1102 - exhaust port, 111 - upper housing, 112 - lower housing, 113 - top cover, 1130 - second chamber, 1131 - convex ring, 114 - buckle cover, 1140 - third chamber, 115 - sealing plate, 12 - water tank, 121 - first top contact member, 122 - boss, 13 - partition assembly, 1301 - air inlet, 131 - upper partition, 1310 - opening, 132 - grille, 133 - lower partition, 134 - air outlet pipe, 1341 - arc-shaped groove;

[0034] 21 - roller, 211 - water suction cylinder, 212 - end cover, 2120 - air inlet, 213 - rotating shaft, 214 - driven gear, 22 - driving assembly, 221 - first motor, 222 - driving gear;

[0035] 30 - fan assembly, 31 - volute, 32 - fan blade, 33 - fixing seat, 331 - first fixing slot, 3310 - first cavity, 332 - fixed fan blade, 34 - second motor, 35 - gland, 351 - second fixing slot, 352 - buckle;

[0036] 40 - liquid level sensor, 41 - induction component, 42 - liquid level sensor circuit board;

[0037] 50—Circuit board. DETAILED DESCRIPTION

[0038] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0041] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0042] Please also refer to Figure 1 、 Figure 4 and Figure 8 , the humidifier provided by the present invention is now described. The humidifier includes a shell 11, a water tank 12, a drum 21, a drive assembly 22, a partition assembly 13 and a fan assembly 30. The water tank 12 is arranged in the shell 11, the drum 21 is installed in the water tank 12, the drive assembly 22 is used to drive the drum 21 to rotate, and the partition assembly 13 is arranged in the shell 11. The fan assembly 30 is installed on the upper side of the partition assembly 13, and the water tank 12 is located on the lower side of the partition assembly 13. An air inlet 1101 and an exhaust port 1102 are provided on the shell 11, and the partition assembly 13 includes an upper partition 131. The air inlet 1101 is located on the upper side of the upper partition 131, and the exhaust port 1102 is located on the lower side of the upper partition 131. The upper partition 131 is provided with an opening 1310 (please refer to Figure 5 ), the opening 1310 is connected to the air inlet 1101, and the fan assembly 30 is connected to the air inlet 1101 and the exhaust port 1102. The fan assembly 30 is used to drive the air sucked in by the air inlet 1101 to flow out from the exhaust port 1102 through the water tank 12 and the opening 1310.

[0043] Air is sucked into the shell 11 through the air inlet 1101, and the air inlet 1101 and the exhaust port 1102 are separated by an upper partition 131. The opening 1310 on the upper partition 131 connects the air inlet 1101 and the exhaust port 1102, separating the water tank 12 and the drum 21 in the shell 11 from the fan assembly 30. The air sucked in from the air inlet 1101 first flows through the water tank 12 and then flows out through the fan assembly 30 and the exhaust port 1102, reducing the air discharged without flowing through the water tank 12, and making the direction of air flow unified; the driving assembly 22 drives the drum 21 to rotate, and the drum 21 drives the water in the water tank 12, so that the air flowing into the water tank 12 is fully in contact with the water. After the air and water vapor are fully mixed, they are discharged from the exhaust port 1102 through the opening 1310 and the fan assembly 30, thereby improving the humidification effect of the air. At the same time, since the air comes into contact with the water in the water tank 12 after entering the water tank 12, the water in the water tank 12 can reduce impurities in the air and play a better role in purifying the air.

[0044] In one embodiment, see Figure 2 and Figure 3 The housing 11 includes an upper shell 111 and a lower shell 112, and the upper shell 111 and the lower shell 112 are detachably connected; the water tank 12 and the drum 21 are installed in the lower shell 112, and the drive assembly 22, the partition assembly 13 and the fan assembly 30 are installed in the upper shell 111 (see Figure 8 and Figure 9 This makes it easier to disassemble the upper and lower shells 111 and 112 of the humidifier, and facilitates the disassembly and maintenance of the water tank 12 and the drum 21 in the humidifier. When the water tank 12 and the drum 21 need to be cleaned, only the upper and lower shells 111 and 112 need to be disassembled. Of course, in other embodiments, the drive assembly 22 can also be installed in the lower shell 112, and a pin or spring is provided in the upper shell 111 to abut against the connecting piece at the top of the lower shell 112 to achieve electrical connection.

[0045] In one embodiment, see Figure 3 and Figure 4 The drum 21 includes a water absorption cylinder 211 and a rotating shaft 213; the water absorption cylinder 211 is folded by an evaporation layer, and the rotating shaft 213 is used to support the water absorption cylinder 211. The evaporation layer is folded into the water absorption cylinder 211. When the rotating shaft 213 rotates, moisture is hung on the evaporation layer of the water absorption cylinder 211, which can make the air entering the water tank 12 fully contact with the water in the water tank 12, which is beneficial to improve the mixing efficiency of water vapor and air.

[0046] Further, see Figure 4 The drum 21 further includes two end covers 212, which respectively support the two ends of the water suction cylinder 211. The rotating shaft 213 is provided on the end covers 212. The two end covers 212 are used to fix the two ends of the water suction cylinder 211, which can maintain the structural strength of the water suction cylinder 211 and prevent the two ends of the water suction cylinder 211 from being deformed or damaged during the rotation process.

[0047] See also Figure 4 、 Figure 5 and Figure 8 At least one end cap 212 is provided with an air inlet 2120. When the fan assembly 30 draws air, the air enters the water tank 12 from outside the housing 11, enters the water absorption cylinder 211 through the air inlet 2120 of the end cap 212, and then passes through the evaporation layer of the water absorption cylinder 211 and the opening 1310 of the upper partition 131 before exiting the housing 11 through the fan assembly 30 and the exhaust port 1102. By folding the evaporation layer into the water absorption cylinder 211, the water absorption cylinder 211 is increased in surface area and the number of water seepage holes in the absorbent paper is increased, thereby improving the air filtration area, increasing air circulation rate, and enhancing humidification efficiency.

[0048] Optionally, see Figure 4 Both end covers 212 are provided with air inlet holes 2120, which can increase the air inlet area and reduce the resistance to air flow.

[0049] Optionally, the evaporation layer is folded along the axial surface of the rotating shaft 213. This provides greater strength for the water suction cylinder 211 and prevents deformation of the water suction cylinder 211 when the fan assembly 30 draws air. Furthermore, the end cap 212 seals both ends of the water suction cylinder 211, reducing the amount of air flowing from the outside of the water suction cylinder 211 through the opening 1310 to the fan assembly 30 and increasing the amount of air passing through the evaporation layer.

[0050] Optionally, the evaporation layer is absorbent paper, which is easy to process and replace, and helps reduce costs. At the same time, the absorbent paper has a high porosity and can hold more water, which helps remove impurities in the air and improve the efficiency of forming water vapor.

[0051] In one embodiment, see Figure 5 、 Figure 6 and Figure 9 The partition assembly 13 further includes an air outlet duct 134, which is disposed on the lower side of the upper partition 131. One end of the air outlet duct 134 is connected to the opening 1310, and the other end of the air outlet duct 134 faces the drum 21 (see Figure 8 and Figure 9 ) extending laterally. The use of the air outlet pipe 134 can enhance the suction effect on the surface of the water absorption cylinder 211, increasing the amount of air passing through the evaporation layer. On the one hand, the evaporation layer filters the air, improving the air purification effect. On the other hand, the air is used to atomize the water in the evaporation layer, allowing the water vapor to fully mix with the filtered air, thereby improving the air humidification effect.

[0052] Optionally, see Figure 5 and Figure 6 The lower end of the air outlet pipe 134 has an arc groove 1341, and the arc groove 1341 and the drum 21 (see Figure 8 and Figure 9 ) side. That is, the arcuate groove 1341 is adapted to the cylindrical surface of the drum 21. This prevents the air outlet pipe 134 from colliding with the drum 21 during its rotation, while also reducing the gap between the air outlet pipe 134 and the outer surface of the water suction cylinder 211. This reduces the proportion of air that flows into the air outlet pipe 134 without passing through the water tank 12 and the drum 21, and increases the proportion of air that passes through the evaporation layer of the drum 21.

[0053] In one embodiment, see Figure 3 and Figure 8The diameters of the two end caps 212 are greater than or equal to the diameter of the water suction cylinder 211. Thus, the end caps 212 seal both sides of the water suction cylinder 211, preventing air leakage from the end faces of the water suction cylinder 211 and preventing air from passing through the water suction cylinder 211 from the inside. Specifically, the difference between the diameters of the end caps 212 and the diameters of the water suction cylinder 211 is greater than 0.5 mm, 1 mm, or 2 mm. This prevents air outside the water suction cylinder 211 from moving along the axis of the water suction cylinder 211, thereby reducing the amount of air that does not pass through the evaporation layer and enters the fan assembly 30.

[0054] In one embodiment, see Figure 2 、 Figure 3 、 Figure 4 and Figure 8 The drive assembly 22 includes a first motor 221 and a driving gear 222. The first motor 221 is mounted on the partition assembly 13. A driven gear 214 is provided on the rotating shaft 213, meshing with the driving gear 222. The first motor 221 drives the driven gear 214 via the driving gear 222, thereby rotating the drum 21. This provides high-precision engagement and helps reduce noise during transmission. Furthermore, the driving gear 222 and the driven gear 214 are easily separated, facilitating disassembly of the drum 21 and improving the efficiency of replacing the water suction cylinder 211 on the drum 21. Alternatively, the driven gear 214 can be mounted on the rotating shaft 213, or the driven gear 214 and the rotating shaft 213 can be integrally formed.

[0055] In one embodiment, see Figure 2 and Figure 8 The diameter of the driven gear 214 is larger than the diameter of the driving gear 222. This helps reduce noise generated when the drive assembly 22 drives the drum 21. It also helps ensure the stability of the drum 21, maintaining a constant gap between the air outlet duct 134 and the drum 21, thereby ensuring smooth suction by the fan assembly 30 and reducing noise. Furthermore, the ratio R1 / R2 of the radius R1 of the driving gear 222 to the radius R2 of the driven gear 214 is less than or equal to 0.8. Optionally, R1 / R2 is less than or equal to 0.2, 0.5, 0.6, etc.

[0056] Optionally, see Figure 3 and Figure 4The drum 21 may be equipped with two driven gears 214, which are respectively mounted on both ends of the rotating shaft 213. The two driven gears 214 are respectively located on the outside of the two end caps 212. In this way, when the drum 21 with two driven gears 214 mounted thereon is placed in the water tank 12, the direction of the drum 21 does not need to be considered. Alternatively, the drum 21 may be equipped with only one driven gear 214, which is mounted on one of the rotating shafts 213. When the drum 21 with one driven gear 214 mounted thereon is placed in the water tank 12, the driven gear 214 needs to be placed opposite the driving gear 222. Of course, the rotating shaft 213 here can be arranged along the axis of the water suction cylinder 211, or it can be arranged on the outside of the end caps 212, as long as it can support the rotation of the end caps 212.

[0057] Specifically, see Figure 8 and Figure 9 The drum 21 is installed horizontally in the water tank 12. During the rotation of the drum 21, the outer periphery of the drum 21 can be continuously soaked by the water in the water tank 12, which can increase the wetting area of the absorbent paper on the drum 21 and improve the purification and humidification efficiency of the drum 21. The inner walls of the water tank 12 on both sides are provided with grooves to support the ends of the drum 21, which facilitates the installation and removal of the drum 21 and the maintenance of the drum 21.

[0058] In one embodiment, see Figure 5 、 Figure 6 ,and Figure 9 The partition assembly 13 also includes a grille 132 and a lower partition 133. The grille 132 is arranged below the upper partition 131. The lower partition 133 extends outward from the lower end of the grille 132. The grille 132 is provided with an air inlet 1301, which connects the air inlet 1101 and the water tank 12. The top of the grille 132 is located adjacent to the edge of the upper partition 131. The upper partition 131 can support the fan assembly 30, making it easier to install the fan assembly 30. The grille 132 is used to connect the upper partition 131 and the lower partition 133. On the one hand, it can enhance the structural strength of the grille 132, and on the other hand, it can prevent foreign matter from being sucked into the water tank 12, thereby ensuring the normal operation of the humidifier drum 21 and protecting the safety of the humidifier. The lower partition 133 can enhance the structural strength of the grille 132 and support the grille 132, thereby ensuring the stability of the entire partition assembly 13.

[0059] Further, see Figure 5 and Figure 6 The air outlet pipe 134 is located in the grille 132 , and the grille 132 is arranged along the circumference of the air outlet pipe 134 .

[0060] In one embodiment, grille 132 includes a first grille and a second grille. The tops and bottoms of the first and second grilles are flush, and the second grille is located inside the first grille. The openings in the first grille and the openings in the second grille are offset from each other. This can enhance the barrier assembly 13's ability to block airborne foreign matter (e.g., long, sheet-like or linear foreign matter such as hair, thread, or paper scraps), strengthen the structural strength of the connection between upper and lower partitions 131 and 133, and facilitate the processing of barrier assembly 13.

[0061] In one embodiment, see Figure 8 and Figure 9 The lower partition 133 is placed on the water tank 12. This ensures the stability of the water tank 12 and the partition assembly 13, and ensures the stability of the transmission between the driving gear 222 and the driven gear 214. At the same time, the upper partition 131 and the lower partition 133 can ensure the structural strength of the partition assembly 13 and ensure the gap between the air outlet pipe 134 and the water suction cylinder 211. Furthermore, the partition assembly 13 can also be fixed to the upper shell 111, which facilitates the disassembly and maintenance of the humidifier while ensuring the stability of the humidifier structure. Of course, in other embodiments, a support structure can also be provided in the lower shell 112 to support the lower partition 133.

[0062] Specifically, see Figure 1 、 Figure 8 and Figure 9 The air inlet 1101 of the housing 11 is disposed between the upper partition 131 and the lower partition 133. That is, the air inlet 1101 is opened on the housing 11 at a position corresponding to the position between the upper partition 131 and the lower partition 133. This enhances the structural strength of the housing 11 through the partition assembly 13, preventing deformation of the housing 11 at the air inlet 1101. It also reduces resistance to air entering the drum 21.

[0063] In one embodiment, see Figure 5 、 Figure 8 and Figure 9 The cross-section of the air outlet pipe 134 is rectangular or substantially rectangular, and the cross-sectional area of the air outlet pipe 134 is greater than or equal to the area of the opening 1310 of the upper partition 131. The lower end of the air outlet pipe 134 is adapted to fit within the outer circumference of the water suction cylinder 211; the lower end of the air outlet pipe 134 is located between the two end caps 212. The spacing between the air outlet pipe 134 and the water suction cylinder 211 is less than 5 mm, and the spacing between the two sides of the air outlet pipe 134 and the end caps 212 is less than 5 mm. This increases the area above the water suction cylinder 211 through which air passes, increasing air permeability, reducing the amount of air entering the air outlet pipe 134 from outside the water suction cylinder 211, and improving air purification and humidification efficiency.

[0064] Optionally, the spacing between the air outlet pipe 134 and the water suction cylinder 211 is less than 0.5 mm, 1 mm, 2 mm, or 3 mm; the gap between the air outlet pipe 134 and the end cap 212 is less than 0.5 mm, 1 mm, 2 mm, or 3 mm. The smaller the spacing, the greater the amount of air flowing from the inner side of the water suction cylinder 211 into the air outlet pipe 134. The spacing can be adjusted according to user needs. The spacing between the air outlet pipe 134 and the water suction cylinder 211 refers to the minimum distance between the air outlet pipe 134 and the water suction cylinder 211, and the spacing between the two sides of the air outlet pipe 134 and the end cap 212 refers to the minimum distance between the two sides of the air outlet pipe 134 and the end cap 212.

[0065] Optionally, see Figure 2 、 Figure 3 and Figure 8 The water tank 12 is placed in the lower shell 112. In this way, when the water tank 12 needs to be cleaned, it only needs to be taken out. In addition, it is easy to process and helps to reduce processing costs. Of course, in other embodiments of the present invention, the water tank 12 can also be integrally formed with the lower shell 112.

[0066] In one embodiment, see Figure 2 、 Figure 7 and Figure 8 The fan assembly 30 includes a volute 31, a fan blade 32, a second motor 34 and a fixing base 33. The volute 31 is connected to the opening 1310 (see Figure 5 ) is connected to the exhaust port 1102, and the fixing base 33 is mounted on the volute 31. The fan blades 32 are mounted within the volute 31, and the second motor 34 is mounted on the fixing base 33. The second motor 34 is used to drive the fan blades 32 to rotate. When the second motor 34 rotates, it drives the fan blades 32 to rotate, generating a suction effect on the surface of the water suction cylinder 211, providing power for air to pass through the drum 21. The fan blades 32 discharge the humidified air from the volute 31, achieving air circulation and humidification.

[0067] Further, see Figure 2 、 Figure 8 and Figure 10 The fixing seat 33 includes a first fixing slot 331 and a fixed fan blade 332. The second motor 34 is fixed in the first fixing slot 331. The fixed fan blade 332 is arranged circumferentially along the first fixing slot 331. The outer periphery of the fixed fan blade 332 is fixed to the volute 31. The fixed fan blade 332 can cooperate with the fan blade 32 to enhance the suction effect on the air outlet pipe 134 and the drum 21, increase the speed of air passing through the drum 21, and improve the air purification efficiency.

[0068] Further, see Figure 2 、 Figure 8 and Figure 10A gland 35 is provided on the fixing base 33. The gland 35 and the fixing base 33 form a first cavity 3310 that seals the second motor 34. The gland 35 and the fixing base 33 form the first cavity 3310 to seal the second motor 34, thereby preventing the humidified air from entering the second motor 34 when flowing upward in the volute 31, which would affect the product's service life and safety performance.

[0069] Further, see Figure 8 、 Figure 9 and Figure 10 The top of the pressure cover 35 is buckled with the inner side of the housing 11 to form a second cavity 1130, which accommodates the circuit board 50 (see Figure 11 ), so that the second cavity 1130 can be used to separate the circuit board 50 from water vapor to prevent the circuit board 50 from getting wet.

[0070] Specifically, see Figure 8 、 Figure 9 and Figure 10 The pressure cover 35 covers the opening of the first fixing groove 331. The top of the pressure cover 35 is provided with a second fixing groove 351. The inner wall of the top cover 113 extends downward with a protruding ring 1131. The protruding ring 1131 is buckled on the second fixing groove 351 to form a second cavity 1130. Optionally, a buckle cover 114 and a sealing plate 115 are provided inside the protruding ring 1131. The buckle cover 114 opens downward. The sealing plate 115 is detachably mounted on the bottom of the buckle cover 114. The buckle cover 114 and the sealing plate 115 enclose a third cavity 1140. The inner side of the second fixing groove 351 is provided with a buckle 352 that engages with the sealing plate 115. The circuit board 50 (see Figure 11 ) is installed in the third cavity 1140 formed by the buckle cover 114 and the sealing plate 115. When the humidifier is filled with water, the water flows downward along the outer wall formed by the engagement of the convex ring 1131 and the second fixing groove 351, and the double-layer isolation structure formed by the second cavity 1130 and the third cavity 1140 prevents the circuit board 50 from getting wet.

[0071] Optional, see Figure 2 、 Figure 6 and Figure 8 The volute 31 is trumpet-shaped, with its opening facing upward. The exhaust port 1102 is located at the top of the housing 11, and the upper partition 131 supports the bottom of the volute 31. This allows the air at the bottom to be drawn in, filtered and humidified, and then the air with higher humidity is sucked in and blown out. This facilitates the sedimentation and elimination of impurities in the air, thereby improving the efficiency of impurity removal and the speed of humidification. Moreover, when the inside of the volute 31 needs to be cleaned, water can be directly flushed downward through the exhaust port 1102, making it easier to clean the product.

[0072] In one embodiment, a liquid level sensor 40 is provided on one side of the water tank 12, and an indicator light is installed on the housing 11, which is used to indicate the liquid level; or a transmitter is installed on the housing 11, which is used to send the liquid level information of the water tank 12 to the smart terminal. The liquid level sensor 40 is used to detect the water level of the water tank 12. The transmitter can be a WIFI module or a Bluetooth module, etc. This makes it easy for the user to know the liquid level in the water tank 12 so that water can be added in time to ensure the working time of the humidifier. Optionally, when the liquid level in the water tank 12 is lower than the preset alarm value, the transmitter sends a message to remind the user to add water in time; if the user does not add water in time, the humidifier continues to run until the liquid level in the water tank 12 reaches the preset end liquid level, and the humidifier stops working to ensure the safety of the humidifier.

[0073] In one embodiment, see Figure 11 and Figure 12 The liquid level sensor 40 includes multiple sensing elements 41 and a liquid level sensing circuit board 42. The multiple sensing elements 41 are arranged longitudinally. The liquid level sensing circuit board 42 is used to process the signals generated by the sensing elements 41 and convert them into liquid level values. The multiple sensing elements 41 can be arranged longitudinally on the side wall of the water tank 12, for example, evenly distributed longitudinally on the side wall of the water tank 12. The sensing elements 41 can be capacitive sensing copper sheets, pole pieces, or electrodes. Of course, the liquid level sensing circuit board 42 can also be integrated into the humidifier circuit board 50.

[0074] Optionally, see Figure 11 and Figure 12 The sensor 41 is a capacitive copper sheet installed between the water tank 12 and the lower shell 112, creating a gap. When the water level in the water tank 12 reaches a certain level, the sensor 41 forms a capacitor with the water in the tank 12, generating a microcurrent. The liquid level sensing circuit board 42 converts this microcurrent into a liquid level signal.

[0075] Optionally, see Figure 11 and Figure 12 The liquid level sensing circuit board 42 may include an amplifier and a microprocessor. The amplifier can enhance the strength of the microcurrent signal so that the microprocessor can accurately convert the microcurrent signal into a corresponding liquid level value. The multiple sensing elements 41 may be connected to one amplifier or to multiple amplifiers in a one-to-one correspondence.

[0076] Specifically, see Figure 9 、 Figure 11 and Figure 12This circuit diagram shows a circuit configuration on a liquid level sensing circuit board 42. KEY1 represents the sensor 41, U1 represents the amplifier, U2 represents the microcontroller, and MCU represents the microprocessor. When the water level reaches the level corresponding to a particular sensor 41, the sensor 41 generates a microcurrent. The liquid level sensing circuit board 42 receives this microcurrent signal and converts it into liquid level information corresponding to the sensor 41.

[0077] In one embodiment, see Figure 3 The water tank 12 is provided with a first top contact 121, which is electrically connected to the liquid level sensor 40. The partition assembly 13 is provided with a second top contact, which is detachably connected to the first top contact 121. This allows the upper and lower circuits to be separated when the partition assembly 13 is removed from the water tank 12, partially disconnecting the water tank 12 and improving product safety. Once the partition assembly 13 is placed on the water tank 12, the circuit connection is maintained, allowing the liquid level within the water tank 12 to be detected. Specifically, the first top contact 121 is a plurality of ejector pins, and the second top contact is a spring that engages with the ejector pins. Of course, in other embodiments, a plug and socket connection can be used to achieve detachable connection between the upper and lower circuits, as long as they can be electrically connected upon contact. This is not further limited here. Alternatively, a transparent lower shell 112 and water tank 12 can be used, or a lower shell 112 and water tank 12 can be used with a window to facilitate observation of the liquid level within the water tank 12.

[0078] Optionally, a boss 122 is provided on the edge of the water tank 12, and the first top contact 121 is disposed on the boss 122. The partition assembly 13 is provided with a groove that mates with the boss 122, and the second top contact is disposed within the groove. This allows the first top contact 121 and the second top contact to be higher than the maximum liquid level in the water tank 12, preventing the water in the water tank 12 from causing a short circuit between the first top contact 121 and the second top contact, thereby affecting the accuracy of liquid level detection and the safety of the humidifier.

[0079] Optionally, there are multiple indicator lights, the number of which is the same as the number of the sensors 41, and the indicator lights and the sensors 41 are arranged at the same height, so that the multiple indicator lights correspond to multiple set values of the liquid level in the water tank 12. When the liquid level in the water tank 12 reaches each preset value, the corresponding indicator light lights up, so that the user can judge the liquid level in the water tank 12 based on the indicator lights.

[0080] Furthermore, a controller is provided within the upper shell 111. Preferably, the controller is disposed on the circuit board 50 within the third cavity 1140. The top cover 113 is provided with a touch key, physical button, or touch screen electrically connected to the controller. The user can control the operation of the humidifier via the touch key, physical button, or touch screen. The controller is electrically connected to the first motor 221, the second motor 34, and the liquid level sensor 40. This allows for a program to be set so that the control assembly can control the operation of the first motor 221 and the second motor 34 based on the liquid level. Of course, a signal transmitter can also be provided in connection with the controller to issue an alarm message when the liquid level is low and water needs to be added, or to send a water-addition message to a mobile phone.

[0081] Optionally, see Figure 2 and Figure 7 A top cover 113 is provided on the top of the upper shell 111, and an exhaust port 1102 is provided on the top cover 113. A plurality of blades are provided in the exhaust port 1102 along the circumference of the second motor 34. This can prevent foreign matter from falling into the volute 31 on the one hand, and on the other hand, it can divert water when adding water through the exhaust port 1102, avoiding water from entering the second motor 34 or outside the volute 31 due to too fast water addition.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A humidifier, characterized in that: The hood is provided with a housing, a water tank arranged in the housing, a drum installed in the water tank, a driving assembly for driving the drum to rotate, a partition assembly and a fan assembly arranged in the housing, the fan assembly being installed on the upper side of the partition assembly, and the water tank being located at the lower side of the partition assembly; the housing is provided with an air inlet and an exhaust port, the partition assembly comprises an upper partition, the exhaust port and the air inlet are respectively located on the upper and lower sides of the upper partition, the upper partition is provided with an opening connected to the air inlet, the fan assembly connects the opening and the exhaust port, the fan assembly is used to drive the air sucked in by the air inlet to flow out from the exhaust port through the water tank and the opening, the upper partition separates the water tank and the drum in the housing from the fan assembly, the air sucked in from the air inlet first flows through the water tank, and the air flowing into the water tank is discharged from the exhaust port through the opening and the fan assembly after contacting with water; wherein, the housing comprises an upper shell and a lower shell.

2. The humidifier according to claim 1, characterized in that: The drum comprises a water absorption cylinder formed by folding an evaporation layer and a rotating shaft for supporting the water absorption cylinder.

3. The humidifier according to claim 2, characterized in that: The drum further comprises two end covers respectively supporting the two ends of the water suction cylinder, and the rotating shaft is arranged on the end covers.

4. The humidifier according to claim 3, characterized in that: At least one of the end covers is provided with an air inlet hole communicating with the inner cavity of the drum.

5. The humidifier according to claim 2, characterized in that: The driving assembly includes a first motor mounted on the partition assembly and a driving gear connected to the first motor; a driven gear meshing with the driving gear is provided on the rotating shaft.

6. The humidifier according to claim 1, characterized in that: The partition assembly further includes an air outlet pipe provided on the lower side of the upper partition, one end of the air outlet pipe is communicated with the opening, and the other end of the air outlet pipe extends toward the side of the drum.

7. The humidifier according to claim 6, characterized in that: The lower end of the air outlet pipe is provided with an arc-shaped groove adapted to the side surface of the drum.

8. The humidifier according to claim 1, characterized in that: The partition assembly also includes a grille arranged below the upper partition and a lower partition extending outward from the lower end of the grille. The lower partition is placed on the water tank, and the grille is provided with an air inlet connecting the air inlet and the water tank.

9. The humidifier according to claim 8, characterized in that: The air inlet of the housing is disposed between the upper partition plate and the lower partition plate.

10. The humidifier according to claim 1, characterized in that: The fan assembly includes a volute, a fan blade installed in the volute, a second motor driving the fan blade and a fixing base supporting the second motor. The volute connects the opening and the exhaust port, and the fixing base is installed on the volute.

11. The humidifier according to claim 10, characterized in that: A pressure cover is provided on the fixing seat, and the pressure cover and the fixing seat form a first cavity for sealing the second motor; the top of the pressure cover is buckled with the inner side of the shell to form a second cavity for accommodating the circuit board.

12. The humidifier according to any one of claims 1 to 11, characterized in that: A liquid level sensor is provided on one side of the water tank, and the liquid level sensor is used to detect the water level of the water tank; an indicator light for indicating the liquid level or a transmitter for sending liquid level information to an intelligent terminal is installed on the housing.

13. The humidifier according to claim 12, characterized in that: The water tank is provided with a first top contact electrically connected to the liquid level sensor, and the partition assembly is provided with a second top contact detachably connected to the first top contact.

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