Humidifier

Abstract

The application provides a humidifier. The humidifier comprises a casing, a water tank, a gauze, a water circuit assembly, a fan and a water level sensor. The water circuit assembly is arranged in the casing and is communicated with the water tank, and the gauze is arranged in an air flow passage of the casing. The water circuit assembly can draw water in the water tank to heat and transmit to the gauze, so that the heated water can wet the gauze. The fan generates air flow which enters the air flow passage through an air inlet and is discharged through an air outlet. The air flow blows through the wet gauze, and the water in the gauze can be easily vaporized and discharged from the air outlet along with the air flow, so that the air can be efficiently humidified. The water level sensor in the water circuit assembly can detect the water level in the water tank.

Description

Technical Field

[0001] This application belongs to the field of air humidification technology, and particularly relates to a humidifier. Background Technology

[0002] Current evaporative humidifiers consist of a water tank, a water pump, a mesh screen, and a fan. The water pump draws water from the tank to wet the mesh screen, and the airflow generated by the fan passes over the mesh screen, causing the water on the screen to evaporate and be blown out with the airflow, thus humidifying the air. How to provide a humidifier with high humidification efficiency and the ability to detect the water level in the tank is a challenge that the industry needs to address. Utility Model Content

[0003] This application provides a humidifier with high humidification efficiency and the ability to detect the water level in the water tank.

[0004] This application provides a humidifier, including a housing, a water tank, a mesh fabric, a water circuit assembly, a fan, and a water level sensor. The housing has an air inlet, an air outlet, and an airflow channel. The water tank is installed in the housing. The mesh fabric is located within the airflow channel. The water circuit assembly is located in the housing and communicates with the water tank, for drawing water from the water tank for heating and transferring it to the mesh fabric. The fan is located in the housing and is used to generate airflow from the air inlet to the air outlet. The water level sensor is located within the water circuit assembly and is used to detect the water level in the water tank.

[0005] In one implementation, the water level sensor includes a float, a magnet, and a Hall sensor. The float is movably mounted in the housing of the water circuit assembly in the vertical direction. The magnet is fixed to the float, and the Hall sensor is fixed to the housing. The magnet and the Hall sensor cooperate to detect the water level of the water tank.

[0006] In one implementation, the water circuit assembly includes a water pump and a pumping channel, the water pump being disposed on the pumping channel, one end of the pumping channel being disposed inside the water tank, and the other end of the pumping channel facing the mesh fabric.

[0007] In one implementation, the water pumping channel includes an inlet pipe and a heating pipe, one end of the inlet pipe and one end of the heating pipe are connected, the inlet pipe is located below the heating pipe and connected to the water pump, and a heating element is provided outside the heating pipe.

[0008] In one implementation, the water level sensor is located below the heating tube and outside the water inlet pipe.

[0009] In one implementation, the heating tube and the heating element are an integral structure;

[0010] In one implementation, the heating element is disposed around the outer periphery of the heating tube;

[0011] In one implementation, the heating element is provided with a flame-retardant insulation layer.

[0012] In one implementation, the heating element is a metal tube.

[0013] In one implementation, the inner cavity of the water inlet pipe is inverted conical in shape;

[0014] In one implementation, the water inlet pipe is a plastic pipe or a silicone pipe.

[0015] In one implementation, the water pump and the pumping channel are mounted on the housing of the water circuit assembly, and the housing is fixed to the machine casing.

[0016] In one implementation, the housing of the water circuit assembly has an opening that connects the interior of the housing to the interior of the water tank, and the water level sensor is at least partially located inside the housing.

[0017] In one implementation, the opening is located at the bottom or side of the housing.

[0018] The beneficial effects of the humidifier provided in this application embodiment are as follows: the water circuit assembly is located in the casing and connected to the water tank, and the mesh fabric is located in the airflow channel of the casing. The water circuit assembly can draw water from the water tank, heat it, and transfer it to the mesh fabric, so that the heated water wets the mesh fabric. The airflow generated by the fan enters the airflow channel through the air inlet and is discharged through the air outlet. The airflow blows over the wetted mesh fabric, and the moisture in the mesh fabric easily vaporizes and is blown out from the air outlet with the airflow, achieving high-efficiency humidification of the air. The water level sensor in the water circuit assembly can detect the water level in the water tank. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A perspective view of a humidifier provided in an embodiment of this application;

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

[0022] Figure 3 for Figure 1 Cross-section of a humidifier Figure 1 ;

[0023] Figure 4 for Figure 3 A diagram showing a humidifier with water in its tank and placed horizontally.

[0024] Figure 5 for Figure 3 Enlarged view of point B on the humidifier;

[0025] Figure 6 for Figure 3 Enlarged view of point A on the humidifier;

[0026] Figure 7 for Figure 1 Cross-section of a humidifier Figure 2 . Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] In the description of the embodiments of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0029] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0031] Please see Figures 1 to 3 This application provides a humidifier 100, including a housing 10, a water tank 20, a mesh fabric 30, a water circuit assembly 40, a fan 50, and a water level sensor 80. The housing 10 has an air inlet 11, an air outlet 12, and an airflow channel 10c. The water tank 20 is installed in the housing 10. The mesh fabric 30 is located within the airflow channel 10c. The water circuit assembly 40 is located in the housing 10 and communicates with the water tank 20, for drawing water from the water tank 20 for heating and transferring it to the mesh fabric 30. The fan 50 is located in the housing 10 and generates an airflow from the air inlet 11 to the air outlet 12. The water level sensor 80 is located within the water circuit assembly 40 and is used to detect the water level in the water tank 20. The air inlet 11, the air outlet 12, and the airflow channel 10c are interconnected.

[0032] The humidifier 100 provided in this embodiment has a water circuit assembly 40 disposed in the housing 10 and connected to the water tank 20, and a mesh fabric 30 located within the airflow channel 10c of the housing 10. The water circuit assembly 40 can draw water from the water tank 20, heat it, and transfer it to the mesh fabric 30, so that the heated water wets the mesh fabric 30. The airflow generated by the fan 50 enters the airflow channel 10c through the air inlet 11 and is discharged through the air outlet 12. The airflow blows over the wetted mesh fabric 30, and the moisture in the mesh fabric 30 easily vaporizes and is blown out from the air outlet 12 with the airflow, achieving high-efficiency humidification of the air. The water level sensor 80 in the water circuit assembly 40 can detect the water level in the water tank 20.

[0033] In some embodiments, please refer to Figure 1 , Figure 3 The casing 10 can be cylindrical, cuboid, cube, etc. The water tank 20 and the casing 10 are compatible in shape, and the outer wall of the water tank 20 can be located close to the inner wall of the casing 10. Given the limited volume of the casing 10, the water tank 20 is made larger to hold more water.

[0034] For example, the housing 10 is generally cylindrical, and the water tank 20 is cylindrical. The water tank 20 is installed at the bottom of the housing 10, and the bottom of the housing 10 is fitted over the water tank 20, giving the humidifier 100 a good overall appearance.

[0035] In some embodiments, the mesh fabric 30 may also be referred to as a wet curtain or humidification component. As a wettable and evaporative substrate for evaporative humidifiers that can retain and evaporate water, it may include a wettable filter material made of hydrophilic polymer composite materials or natural / synthetic fiber fabrics. Its surface may be treated with a nano-coating or gradient porosity to optimize capillary water absorption performance. The wettable filter material can be wetted to form an air-water contact interface with a high specific surface area through a multi-layer composite or three-dimensional honeycomb structure, and may be wetted with antibacterial agents or anti-mildew coatings that resist biofouling. The wettable filter material may be equipped with a support frame integrating guide channels or asymmetric corrugated units to directionally guide the airflow and moisture diffusion path. At the same time, the mesh fabric may have a modular assembly structure and a detachable installation interface that can be adapted to different air supply systems.

[0036] In some embodiments, please refer to Figure 3 The water level sensor 80 includes a float 81, a magnet 82, and a Hall sensor 83. The float 81 is movably mounted on the housing 46 of the water circuit assembly 40 in the vertical direction. The magnet 82 is fixed to the float 81, and the Hall sensor 83 is fixed to the housing 46. The magnet 82 and the Hall sensor 83 cooperate to detect the water level of the water tank 20.

[0037] A float 81, with a fixed magnet 82, is movably mounted on the housing 46 of the water circuit assembly 40 and can float freely on the water surface. A Hall sensor 83 converts the changing magnetic field into a change in output voltage. The Hall sensor 83 can be positioned at a predetermined location in the water tank 20. As the water level in the water tank 20 changes, the magnet 82 moves up and down with the float 81. The Hall sensor 83 detects the change in the magnetic field of the magnet 82, thereby detecting the position of the float 81 and achieving water level detection in the water tank 20.

[0038] For example, the Hall sensor 83 is positioned at a high position within the water tank 20. (As...) Figure 4 As shown, when the water level in the water tank 20 is higher than the predetermined position C, that is, when the float 81 with the magnet 82 fixed is higher than the predetermined position C, the Hall sensor 83 can detect the magnetic field of the magnet 82 and determine that the water tank 20 has a certain amount of water.

[0039] like Figure 3 As shown, when the water level in the water tank 20 is lower than the predetermined position C, that is, when the float 81 with the magnet 82 fixed is lower than the predetermined position C, the Hall sensor 83 cannot detect the magnetic field of the magnet 82, and it can be determined that the water level in the water tank 20 is low or there is no water.

[0040] In some embodiments, please refer to Figure 4The water system assembly 40 includes a water pump 41 and a water pumping channel 40a. The water pump 41 is mounted on the water pumping channel 40a, one end of which is located inside the water tank 20, and the other end of which faces the mesh fabric 30. The water pump 41 and the water pumping channel 40a work together to transfer water 1 from the water tank 20 to the mesh fabric 30 through the water pumping channel 40a, thus wetting the mesh fabric 30.

[0041] The water pump 41 can be located near the center area 10a of the housing 10. There is a lot of water 1 around the water pump 41. The noise generated by the water pump 41 during operation is blocked by the water 1 to a certain extent, reducing the operating noise of the water pump 41 and improving the user experience.

[0042] In some embodiments, please refer to Figure 3 The water pumping channel 40a includes an inlet pipe 42 and a heating pipe 43. One end of the inlet pipe 42 is connected to one end of the heating pipe 43. The inlet pipe 42 is located below the heating pipe 43 and is connected to the water pump 41. The heating pipe 43 is provided with a heating element 44.

[0043] When the mesh fabric 30 needs to be wetted, water 1 from water tank 20 is pumped into inlet pipe 42 by water pump 41. After passing through heating pipe 43, the water is transferred to the mesh fabric 30. The water in heating pipe 43 can be heated by heating element 44, so that the heated water 1 wets the mesh fabric 30. When the airflow passes through the wetted mesh fabric 30, the preheated water evaporates more easily, and the moisture is blown out from air outlet 12 with the airflow, enhancing the humidification effect.

[0044] The heating element 44 can be a positive temperature coefficient (PTC) thermistor.

[0045] In some embodiments, please refer to Figure 3 It also includes a controller 90, a Hall sensor 83, and a heating element 44, all electrically connected to the controller 90. The controller 90, Hall sensor 83, and heating element 44 work together, and based on the detection signal of the magnetic field of the magnet 82 by the Hall sensor 83, the controller 90 can determine the water level in the water tank 20.

[0046] When the controller 90 determines that there is a certain amount of water, the controller 90 activates the heating element 44 to heat the water in the heating tube 43. When the controller 90 determines that the water level in the water tank 20 is low or there is no water, the controller 90 stops the heating element 44 from working, to avoid or reduce the possibility of fire caused by the heating element 44 burning dry in the heating tube 43 which is short of water, and to improve the reliability of the heating element 44 and the heating tube 43.

[0047] The controller 90 can be represented as a circuit board assembly and can be set inside the housing 10, for example, inside the housing 10 near the fan 50, avoiding the mesh 30 and the water tank 20.

[0048] In some embodiments, please refer to Figure 3 The housing 46 has a guide groove 461 extending along the height direction Z of the housing 10, within which the float 81 can move. Confining the float 81 within the guide groove 461 causes the magnet 82 to move within a predetermined range, allowing the Hall sensor 83 and the magnet 82 on the float 81 to cooperate in detecting the position of the float 81. The Hall sensor 83 can be fixed to the housing 46.

[0049] In some embodiments, please refer to Figure 3 The water level sensor 80 is located below the heating tube 43 and outside the water inlet pipe 42. This ensures that the water level sensor 80 can operate reliably to detect the water level in the water tank 20.

[0050] In some embodiments, please refer to Figure 3 The heating tube 43 and the heating element 44 are integrated into one structure. This allows for convenient assembly of the heating tube 43 and the heating element 44 into the housing 46, with the heating element 44 heating the water inside the heating tube 43.

[0051] In some embodiments, please refer to Figure 3 The heating element 44 is arranged around the outer periphery of the heating tube 43 to improve the heating effect of the water inside the heating tube 43.

[0052] In some embodiments, please refer to Figure 3 The heating element 44 is surrounded by a flame-retardant insulation layer 441. This enhances fire resistance and insulation performance, keeping the heating element 44 insulated and preventing or reducing the occurrence of fires. The flame-retardant insulation layer 441 can surround the heating element 44 to improve the insulation effect. The flame-retardant insulation layer 441 can be made of materials such as rock wool, foam glass, and polyurethane.

[0053] In some embodiments, please refer to Figure 3 Heating element 43 is a metal tube. The metal tube is heat-resistant. When heating element 44 heats the water inside the metal tube, the heat is conducted through the metal tube to the water. The metal tube has high thermal conductivity and does not experience high-temperature aging. The metal tube can be stainless steel, copper, etc.

[0054] In some embodiments, please refer to Figure 3 The inner cavity of the inlet pipe 42 is inverted conical. This can effectively reduce the impact of water pressure on the inlet pipe 42 when the water pump 41 starts operating, which could cause damage due to high internal pressure, thus improving the reliability of the inlet pipe 42.

[0055] In some embodiments, please refer to Figure 3The inlet pipe 42 is made of plastic or silicone. The inlet pipe 42 can be made of high-temperature resistant plastic or silicone. The plastic can be polyimide, polyphenylene sulfide, polytetrafluoroethylene, etc. The silicone can be high-temperature silicone, high-temperature resistant platinum silicone, high-temperature resistant fluorosilicone, etc.

[0056] In some embodiments, please refer to Figure 5 A sealing connection structure 47 is provided between the water inlet pipe 42 and the heating pipe 43 to achieve a sealed connection between the two pipes.

[0057] For example, the sealing connection structure 47 may include a convex ring 432 and an annular groove 421. The convex ring 432 may be disposed on the outer wall of the constricted section 431, and the annular groove 421 may be disposed on the inner wall of the port of the water inlet pipe 42. When the heating tube 43 is assembled into the water inlet pipe 42, the convex ring 432 may be engaged into the annular groove 421 to achieve a sealed connection between the heating tube 43 and the water inlet pipe 42.

[0058] In some embodiments, please refer to Figure 5 One end of the heating tube 43 is a constricted section 431, which can be inserted into one end of the water inlet pipe 42. The constricted section 431 and the water inlet pipe 42 are tightly fitted. When the constricted section 431 is inserted into the end of the water inlet pipe 42, the end face of the water inlet pipe 42 abuts against the stepped surface 433 of the heating tube 43, thereby achieving the positioning and assembly of the heating tube 43 and the water inlet pipe 42.

[0059] In some embodiments, please refer to Figure 3 The water pumping channel 40a also includes an outlet pipe 45, one end of which is connected to one end of the heating pipe 43, and the other end of which faces the mesh fabric 30. The outlet pipe 45 can extend horizontally, and its end can be located above the mesh fabric 30. The outlet pipe 45 is used to allow water inside the heating pipe 43 to flow to the mesh fabric 30. When the water pump 41 is working, the water in the water tank 20 flows sequentially through the inlet pipe 42, the heating pipe 43, and the outlet pipe 45 to the mesh fabric 30, thus fully wetting the mesh fabric 30.

[0060] In some embodiments, please refer to Figure 3 The water pump 41 and the water pumping channel 40a are installed in the housing 46 of the water circuit assembly 40, and the housing 46 is fixed to the casing 10. The water circuit assembly 40 and the casing 10 are an integral structure. When the water tank 20 is assembled into the casing 10, the water pump 41 of the water circuit assembly 40 is positioned at the bottom of the water tank 20. During the process of the user lifting the casing 10 to separate the casing 10 and the water tank 20, the water circuit assembly 40 follows the casing 10 to separate the water tank 20.

[0061] For example, the water pump 41 can be fastened to the housing 46 using fasteners. The inlet pipe 42 can be snapped onto the housing 46. The two ends of the heating pipe 43 are connected to the inlet pipe 42 and the outlet pipe 45, respectively. The outlet pipe 45 can be snapped onto the housing 46. The wires between the controller 90 and the motor 51, and between the controller 90 and the Hall sensor 83, can be arranged inside the housing 46.

[0062] In some embodiments, please refer to Figure 3 , Figure 4 The housing 46 of the water circuit assembly 40 has an opening 462 that connects the interior of the housing 46 to the interior of the water tank 20. The water level sensor 80 is at least partially located inside the housing 46. Water in the water tank 20 can enter the housing 46 through the opening 462, and the water level inside the housing 46 and the water level in the water tank 20 are kept at the same height, so that the water level sensor 80 can detect the water level in the water tank 20.

[0063] In some embodiments, please refer to Figure 3 , Figure 4 An opening 462 is provided at the bottom or side of the housing 46 of the water system assembly 40. This ensures that the water level inside the housing 46 and the water level in the water tank 20 are at the same height.

[0064] For example, opening 462 may be located on the side of housing 46 and extend along the height direction Z of housing 10. Opening 462 allows communication between the interior of housing 46 and the interior of water tank 20.

[0065] In some embodiments, please refer to Figure 3 The mesh fabric 30 is mounted on the connecting frame 31, and a bracket 60 is provided on the inner periphery of the top opening 22 of the water tank 20. The bottom of the connecting frame 31 is mounted on the bracket 60. This ensures that the mesh fabric 30 is reliably assembled on the bracket 60. The outer flange 61 of the bracket 60 abuts against the end face 23 of the water tank 20 at the top opening 22, thus limiting the bracket 60 at the top opening 22 and improving assembly efficiency.

[0066] In some embodiments, please refer to Figure 3 , Figure 6 The connecting frame 31 includes an annular top 311, an annular bottom 312, and a ventilation section 313, with the annular top 311 and the annular bottom 312 connected by the ventilation section 313. The annular top 311 has a water distribution groove 3111, and the bottom surface of the water distribution groove 3111 has seepage holes 3112. The mesh fabric 30 is sleeved outside the ventilation section 313, with its upper end face 30a fitting against the annular top 311 and its lower end face 30b fitting against the annular bottom 312. The annular bottom 312 is mounted in the positioning groove 62 of the bracket 60.

[0067] The water system assembly 40 draws water from the water tank 20 and transfers it to the water distribution trough 3111 of the connecting frame 31. The water in the water distribution trough 3111 falls onto the mesh fabric 30 through the seepage holes 3112, thus wetting the mesh fabric 30. The airflow generated by the fan 50 can pass through the mesh fabric 30 and the ventilation opening 3131 of the ventilation section 313, and the connecting frame 31 does not affect the airflow.

[0068] In some embodiments, see Figure 4 The top of the water distribution trough 3111 of the connecting frame 31 has a slot 3113, and one end of the water outlet pipe 45 can be located above the slot 3113 of the water distribution trough 3111. When the water pump 41 is working, the water in the water tank 20 flows into the water distribution trough 3111 in sequence through the inlet pipe 42, the heating pipe 43 and the outlet pipe 45, and then through the seepage hole 3112, so that the water falls onto the mesh cloth 30.

[0069] In other embodiments, the mesh fabric 30 may not have a connecting frame 31 and may be directly assembled onto the bracket 60.

[0070] In some embodiments, please refer to Figure 3 The water tank 20 is detachably installed at the bottom of the housing 10, with the bottom of the housing 10 fitted over the water tank 20. The water tank 20 is detachable from the housing 10, facilitating cleaning and maintenance of the water tank 20 and other components. The water tank 20 and the housing 10 can be connected using snap-fit, tight-fit, or fastener methods. When the water tank 20 is installed on the housing 10, the housing 10 serves as an exterior component of the entire machine, providing a better aesthetic appearance.

[0071] In other embodiments, the water tank 20 is detachably mounted to the bottom of the housing 10, with the bottom of the housing 10 connected to the upper end of the water tank 20. The water tank 20 is detachable from the housing 10, facilitating cleaning or maintenance of the water tank 20 and other components.

[0072] In some embodiments, please refer to Figure 3 , Figure 4 Air inlets 11 are distributed on the outer periphery 10b of the casing 10. Air outlets 12 are located on the top of the casing 10. The mesh fabric 30 is annular and is arranged opposite to the air inlets 11. When the fan 50 is working, the airflow on the outer periphery 10b of the casing 10 enters the airflow channel 10c through the air inlets 11. After the airflow passes through the wetted mesh fabric 30 from the outside to the inside, the moisture in the mesh fabric 30 vaporizes and is blown out from the air outlet 12 with the airflow, thus humidifying the air.

[0073] In some embodiments, please refer to Figure 3The fan 50 can be positioned above the mesh fabric 30. The fan 50 includes a motor 51 and a fan blade 52. The fan blade 52 is mounted on the output shaft of the motor 51 and located on the outer periphery of the motor 51. The motor 51 can drive the fan blade 52 to rotate to generate airflow. The fan 50 can be an axial flow fan 50, capable of generating airflow along the axial direction. The air inlet side 50a of the fan 50 can be positioned close to the mesh fabric 30, and the air outlet side 50b of the fan 50 can be positioned close to the air outlet 12.

[0074] In some embodiments, please refer to Figure 7 The housing 10 has a water filling channel 15, which is arranged adjacent to the fan 50. The top of the water filling channel 15 forms a water inlet 151, and the bottom of the water filling channel 15 is connected to the slot 3113 of the water distribution groove 3111 of the connecting frame 31. When water is poured into the water inlet 151, the water enters the water distribution groove 3111 of the connecting frame 31 through the water filling channel 15, falls onto the mesh 30 through the seepage hole 3112, passes through the outlet 63 of the bracket 60, and finally flows down along the inner wall of the water tank 20 into the water tank 20.

[0075] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A humidifier, characterized in that, Includes casing, water tank, mesh fabric, water circuit components, fan, and water level sensor; The housing has an air inlet, an air outlet, and an airflow channel; The water tank is installed in the casing; The mesh fabric is located within the airflow channel; The water circuit assembly is located on the housing and connected to the water tank, and is used to draw water from the water tank for heating and transferring it to the mesh fabric; The fan is mounted on the casing and is used to generate airflow from the air inlet to the air outlet; The water level sensor is located inside the water circuit assembly and is used to detect the water level in the water tank.

2. The humidifier as described in claim 1, characterized in that, The water level sensor includes a float, a magnet, and a Hall sensor. The float is movably mounted on the housing of the water circuit assembly in the vertical direction. The magnet is fixed to the float, and the Hall sensor is fixed to the housing. The magnet and the Hall sensor work together to detect the water level in the water tank.

3. The humidifier as described in claim 1 or 2, characterized in that, The water system assembly includes a water pump and a pumping channel. The water pump is located on the pumping channel, one end of which is located inside the water tank, and the other end of which faces the mesh fabric.

4. The humidifier as described in claim 3, characterized in that, The water pumping channel includes an inlet pipe and a heating pipe. One end of the inlet pipe is connected to one end of the heating pipe. The inlet pipe is located below the heating pipe and connected to the water pump. A heating element is provided on the outside of the heating pipe.

5. The humidifier as described in claim 4, characterized in that, The water level sensor is located below the heating tube and outside the water inlet pipe.

6. The humidifier as described in claim 4, characterized in that, The heating tube and the heating element are an integral structure; And / or, the heating element is disposed around the outer periphery of the heating tube; And / or, the heating element is provided with a flame-retardant insulation layer; And / or, the heating element is a metal tube.

7. The humidifier as described in claim 4, characterized in that, The inner cavity of the water inlet pipe is inverted conical in shape; And / or, the water inlet pipe is a plastic pipe or a silicone pipe.

8. The humidifier as described in claim 3, characterized in that, The water pump and the water pumping channel are installed in the housing of the water circuit assembly, and the housing is fixed to the machine casing.

9. The humidifier as described in claim 1 or 2, characterized in that, The housing of the water circuit assembly has an opening that connects the interior of the housing to the interior of the water tank, and the water level sensor is at least partially located inside the housing.

10. The humidifier as described in claim 9, characterized in that, The opening is located at the bottom or side of the housing.

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