Humidifier

Abstract

The embodiment of the present application discloses a humidifier, which comprises a body, a wettable substrate arranged in the body, a fan assembly for driving airflow to flow through the wettable substrate, a liquid storage tank for storing liquid, a waterway assembly comprising a liquid supply pipeline for supplying liquid to the wettable substrate and a liquid return pipeline for collecting liquid flowing out of the wettable substrate, and a feeding assembly for feeding cleaning medium into the liquid storage tank or the liquid supply pipeline.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and more particularly to a humidifier. Background Technology

[0002] During the use of a humidifier, scale will gradually accumulate on the surface of the mesh or filter. The scale will block the microporous structure of the mesh, thereby reducing the air permeability and water retention of the mesh, which in turn leads to a decrease in humidification efficiency.

[0003] Especially in areas with hard water, scale is more likely to accumulate, requiring users to frequently remove the mesh from the humidifier for cleaning and maintenance. However, the mesh is usually installed inside the humidifier, making the disassembly process complicated and reducing the convenience of using the humidifier. Utility Model Content

[0004] This application discloses a humidifier that can automatically clean a wettable substrate, improving the ease of use of the humidifier.

[0005] The humidifier provided in this application includes: a body; a wettable substrate disposed within the body; a fan assembly for driving airflow through the wettable substrate; a liquid storage tank for storing liquid; a water circuit assembly including a liquid supply pipe for supplying liquid to the wettable substrate and a return pipe for collecting liquid flowing out of the wettable substrate; and a feeding assembly for dispensing cleaning medium into the liquid storage tank or the liquid supply pipe.

[0006] In one possible implementation, the outlet end of the return pipeline is connected to the storage tank or a drainage channel for draining liquid.

[0007] In one possible implementation, the humidifier further includes:

[0008] The wastewater tank can be detachably disposed within the machine body to receive the liquid discharged from the drain channel, or the wastewater tank can be located outside the machine body to receive the liquid discharged from the drain channel.

[0009] In one possible implementation, the humidifier further includes:

[0010] A first valve is disposed in the liquid supply pipeline, and the first valve is used to connect or block the liquid supply pipeline to the liquid storage tank.

[0011] A second valve is provided in the return liquid pipeline. The second valve is used to connect or block the outlet end of the return liquid pipeline to the storage tank, the supply liquid pipeline, or the drainage channel.

[0012] In one possible implementation, the return line includes:

[0013] A water collection tray, wherein the wettable substrate is disposed in the water collection tray;

[0014] A liquid guide tube is connected to the water receiving tray, the second valve is disposed on the liquid guide tube, and the liquid guide tube has the liquid outlet end.

[0015] In one possible implementation, the waterway component further includes:

[0016] A water pump is installed in the liquid supply pipeline, and the water pump is located between the first valve and the wettable substrate.

[0017] In one possible implementation, the humidifier further includes:

[0018] A pH sensor is installed in the return liquid pipeline;

[0019] Specifically, if the rate of change of the pH sensor's detected value within a first preset time period is lower than a first preset threshold, the liquid supply pipeline stops supplying liquid.

[0020] In one possible implementation, the feeding component includes:

[0021] The storage box is connected to the liquid storage tank or liquid supply pipeline through an openable and closable connection channel, and the storage box is used to store the cleaning medium.

[0022] In one possible implementation, the feeding component further includes:

[0023] A metering component is disposed in the connection channel, and the metering component is used to quantitatively dispense the cleaning medium into the storage tank or the supply pipeline.

[0024] In one possible implementation, the liquid storage tank includes a tank cover, the tank cover being provided with a feeding port communicating with the connecting channel;

[0025] The connecting channel is equipped with a one-way valve, which is configured to allow the cleaning fluid to flow unidirectionally from the storage box to the storage tank or the supply pipeline; and / or the connection between the feeding port and the connecting channel is provided with a sealing structure.

[0026] Thus, the humidifier provided in this application embodiment can dispense cleaning medium into the storage tank or supply pipeline through the dispensing component, thereby forming a cleaning solution for cleaning the wettable substrate. The cleaning of the wettable substrate is completed within the humidifier's internal casing, eliminating the need to disassemble the wettable substrate for cleaning. By using cleaning liquid injected into the wettable substrate, the service life of the wettable substrate can be extended, and the ease of use of the humidifier can be improved. Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments 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.

[0028] Figure 1 This is one of the structural schematic diagrams of a humidifier provided in an embodiment of this application;

[0029] Figure 2 This is a second schematic diagram of the structure of a humidifier provided in an embodiment of this application;

[0030] Figure 3 A schematic diagram of the assembly structure of a humidifier's liquid storage tank and feeding assembly provided in an embodiment of this application;

[0031] Explanation of reference numerals in the attached figures:

[0032] 1-Humidifier; 10-Main body; 20-Immersable substrate; 30-Fan assembly; 40-Liquid storage tank; 401-Tank cover; 402-Feeding port; 50-Water circuit assembly; 501-Liquid supply pipeline; 502-Liquid return pipeline; 5021-Water receiving tray; 5022-Liquid guide pipe; 503-Water pump; 504-Drainage channel; 60-Feeding assembly; 601-Storage box; 602-Connection channel; 603-One-way valve; 70-Switching assembly; 701-First valve; 702-Second valve; 80-Wastewater tank; 90-pH sensor. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0035] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0036] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0037] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0038] During the use of evaporative humidifiers, scale deposits will gradually form on the surface of the mesh fabric. The main components of the scale are calcium carbonate and magnesium carbonate. This scale will gradually clog the fiber pores of the mesh fabric, affecting its normal penetration and evaporation. With prolonged use, scale accumulation will cause the humidification efficiency of the mesh fabric to gradually decrease.

[0039] For evaporative humidifiers without mist, the mesh fabric is in constant contact with water, making its cleaning and maintenance even more important. Typically, users need to manually remove the mesh fabric from inside the humidifier for cleaning, but this process is inconvenient because the mesh fabric is usually installed deep inside the humidifier and connected to the water supply system.

[0040] In view of this, this application proposes a humidifier that, by setting up a feeding component, a liquid supply pipeline and a liquid return pipeline, can not only supply liquid to the wettable substrate in humidification mode, but also automatically clean the mesh fabric according to the user's needs, thus improving the ease of use of the humidifier.

[0041] Please see Figures 1 to 2This application provides a humidifier 1, which includes a body 10, a fan assembly 30, and a wettable substrate 20. The body 10 has an air inlet and an air outlet, forming an airflow channel between them, within which the wettable substrate 20 is located. When the fan assembly 30 operates, it generates negative pressure, drawing air from the indoor environment through the air inlet, passing through the moistened wettable substrate 20, and then exiting through the air outlet, thereby increasing the humidity of the airflow entering the indoor environment.

[0042] The wettable substrate 20 can be a filter material made of hydrophilic polymer composite material or natural / synthetic fiber fabric. The surface of the wettable substrate 20 can be treated with a nano-coating or gradient porosity to optimize capillary water absorption performance. The wettable substrate 20 forms a high specific surface area air-water contact interface through a multi-layer composite or three-dimensional honeycomb structure. A support frame can be provided inside or outside the wettable substrate 20 to maintain the initial shape and structural stability of the wettable substrate 20.

[0043] The humidifier 1 also includes a liquid storage tank 40. The liquid storage tank 40 is detachably disposed within the body 10 to facilitate the user's replenishment of the liquid storage tank 40. The liquid storage tank 40 is used to store humidification water as a water source for wetting and cleaning the wettable substrate 20.

[0044] The humidifier 1 also includes a water circuit assembly 50. The water circuit assembly 50 is located within the body 10 and includes a supply pipe 501 for supplying liquid to the wettable substrate 20, and a return pipe 502 for collecting liquid flowing out of the wettable substrate 20. The supply pipe 501 and the return pipe 502 can be made of PP, PVC, or silicone, respectively, thus providing good corrosion resistance.

[0045] The humidifier 1 also includes a feeding assembly 60. The feeding assembly 60 is disposed inside the body 10. The feeding assembly 60 stores a cleaning medium for preparing cleaning solution and can be controlled to be connected to the liquid storage tank 40 or the liquid supply line 501, so as to feed the cleaning medium into the liquid storage tank 40 or the liquid supply line 501 to prepare cleaning solution.

[0046] For example, the cleaning medium can be an acidic medium such as citric acid or acetic acid. This acidic medium can not only dissolve scale in the wettable substrate 20, but also kill most of the microorganisms growing in the wettable substrate 20, thereby achieving cleaning of the wettable substrate 20. Of course, the cleaning medium can also be an alkaline substance capable of decomposing scale; this application embodiment does not specifically limit this. The cleaning medium can be at least one of solid particles, sustained-release capsules, or liquid concentrate.

[0047] The liquid supply line 501 may be selectively connected to the liquid storage tank 40. For example, a solenoid valve may be installed between the liquid supply line 501 and the liquid storage tank 40, which can open or close the connection between the liquid supply line 501 and the liquid storage tank 40. Alternatively, the liquid supply line 501 and the liquid storage tank 40 may also be connected or closed via a mechanical rotary valve.

[0048] Thus, the humidifier provided in this application embodiment can dispense cleaning medium into the storage tank or supply pipeline through the feeding component, thereby forming a cleaning solution for cleaning the wettable substrate. The cleaning of the wettable substrate is completed within the casing of the humidifier, eliminating the need to disassemble the wettable substrate from the machine for cleaning. By using cleaning liquid injected into the wettable substrate, the service life of the wettable substrate can be extended, and the ease of use of the humidifier can be improved.

[0049] The return line 502 can be selectively connected to the supply line 501 or the storage tank 40. For example, a three-way valve can be installed on the return line 502, connecting the storage tank 40, the supply line 501, and the return line 502 respectively. The three-way valve can switch the connection state between the storage tank 40, the supply line 501, and the return line 502 according to the operating mode of the humidifier 1.

[0050] When the humidifier 1 is operating in humidification mode, the water circuit assembly 50 is in its first working state. In the first working state, both the liquid supply line 501 and the liquid return line 502 are connected to the liquid storage tank 40 to form a humidification circulating water circuit.

[0051] Specifically, the humidifying water in the storage tank 40 is transported to the top of the wettable substrate 20 via the supply pipe 501. A water distribution plate can be installed on the top of the wettable substrate 20, through which the humidifying water flows evenly into the wettable substrate 20. Under the action of gravity, the liquid wets the wettable substrate 20 from top to bottom, and the excess water that is not evaporated is collected back to the storage tank 40 via the return pipe 502, forming a humidification circulation water path. During this process, the fan assembly 30 operates continuously, causing air to flow through the humidified wettable substrate 20, achieving efficient humidification.

[0052] When the performance parameters of the wettable substrate 20 decrease, it indicates that the wettable substrate 20 needs to be cleaned to remove scale. In this case, a cleaning solution needs to be prepared for subsequent cleaning of the wettable substrate 20.

[0053] For example, a differential pressure sensor may be installed in the humidifier 1 to detect the air pressure difference between the air inlet and outlet sides of the wettable substrate 20. The operating performance parameter is the aforementioned air pressure difference value. A timer may also be installed in the humidifier 1 to calculate the cumulative usage time of the wettable substrate 20. The operating performance parameter is the aforementioned cumulative usage time. When the operating performance parameter drops to a preset value, the humidifier 1 can use a cleaning solution to descale and clean the wettable substrate 20.

[0054] like Figure 2 and Figure 3 As shown, in one possible implementation, the feeding component 60 feeds the cleaning medium into the storage tank 40, which can prepare a large amount of cleaning liquid at one time, suitable for scenarios where scale accumulation is severe in the substrate 20 that can be soaked.

[0055] like Figure 2 As shown, in another possible implementation, the feeding assembly 60 feeds the cleaning medium into the supply line 501. The humidifier in the storage tank 40 is used to mix the cleaning medium with the liquid in the supply line 501 in real time. The humidifying water in the storage tank 40 is kept clean, and the cleaning solution prepared in real time has higher reactivity.

[0056] After the feeding component 60 feeds the material, the water circuit component 50 in the humidifier 1 can maintain its first working state for a preset time (a relatively short time, such as 1-2 minutes), allowing the preset metered cleaning liquid (prepared centrally or on-the-spot) to fully wet the entire surface of the wettable substrate 20. That is, when the water circuit component 50 is in its first working state, in addition to implementing the humidification mode of the humidifier 1, it can also inject new cleaning liquid into the wettable substrate 20. Subsequently, the humidifier 1 switches the working state of the water circuit component 50, putting it into a second working state to circulate and clean the wettable substrate 20.

[0057] It is worth noting that when the water circuit assembly 50 is in the first working state, the humidifier 1 can also operate in the circulating cleaning mode. The circulating cleaning water circuit includes a liquid storage tank 40, a liquid supply line 501, and a liquid return line 502. Specifically, the cleaning liquid in the liquid storage tank 40 flows back to the liquid storage tank 40 after passing through the liquid supply line 501, the wettable substrate 20, and the liquid return line 502, forming the first circulating water circuit of the whole system.

[0058] When the water circuit assembly 50 is in its second operating state, the humidifier 1 can operate in a circulating cleaning mode. Specifically, when the water circuit assembly 50 is in its second operating state, both the supply pipe 501 and the return pipe 502 are isolated from the storage tank 40. The outlet end of the return pipe 502 is connected to the supply pipe 501 to form a second circulating water circuit. Compared to the first circulating water circuit, the second circulating water circuit can be considered a local circulating water circuit. The cleaning liquid is delivered from the supply pipe 501 to the top of the wettable substrate 20. The cleaning liquid flows from top to bottom through the entire wettable substrate 20. The cleaning liquid that still has a cleaning effect is collected through the return pipe 502 and returns to the supply pipe 501, forming a continuous circulating cleaning. This achieves efficient utilization of the cleaning liquid, reduces the amount of cleaning liquid used, and the multiple cyclic rinsing improves the dissolution effect on scale, allowing the wettable substrate 20 to restore its initial water absorption performance.

[0059] To prevent cleaning solution from being blown into the indoor environment, the fan assembly 30 can be stopped when the humidifier 1 is running in the circulating cleaning mode.

[0060] Thus, the humidifier 1 provided in this embodiment can switch between humidification mode and circulating cleaning mode by switching the water circuit component 50, eliminating the need for manual disassembly and cleaning of the wettable substrate 20, thereby improving the ease of use of the humidifier 1. By circulating the cleaning solution, the cleaning solution is injected into the wettable substrate 20 multiple times, improving the utilization efficiency and cleaning effect of the cleaning solution, extending the service life of the wettable substrate 20, and enabling the humidifier 1 to maintain stable humidification performance for a long time. At the same time, the circulating cleaning mode can also include two different circulation methods: overall circulation and partial circulation, allowing the selection of a suitable cleaning scheme according to the degree of contamination of the wettable substrate 20. In the case of light scaling on the wettable substrate 20, the partial circulation mode can be used to save cleaning solution consumption, while in the case of heavy scaling on the wettable substrate 20, the overall circulation mode can further improve the cleaning effect.

[0061] In some embodiments, the water circuit assembly 50 further includes a third operating state. In the third operating state, the outlet end of the return liquid line 502 is connected to the drain channel 504 for draining liquid, so that the humidifier 1 is in draining mode. At this time, the valve provided with the return liquid line 502 can be a four-way valve. The drain channel 504 is used to discharge the used cleaning liquid to the outside of the body 10, or to guide the used waste liquid to the wastewater tank 80 or the waste liquid chamber of the storage tank 40 inside the body 10 for storing waste liquid.

[0062] Specifically, after the circulating cleaning mode is completed, the water circuit component 50 can switch to the third working state. In the third working state, the outlet of the return liquid line 502 is switched from being connected to the supply liquid line 501 to being connected to the drain channel 504, so that the circulating cleaning liquid can be discharged outside the machine body 10. The used cleaning liquid can be thoroughly removed, avoiding contamination of the solution (cleaning liquid / humidifying water) in the storage tank 40 by the used cleaning liquid.

[0063] In some embodiments, the humidifier 1 further includes a wastewater tank 80. The wastewater tank 80 is detachably disposed within the body 10 to receive liquid discharged from the return liquid line 502. The wastewater tank 80 is disposed independently of the main liquid storage tank 40 to prevent the used cleaning solution from mixing with the humidification water.

[0064] Specifically, in the drain mode, the second valve 702 switches the return line 502 to connect with the drain channel 504, and the used cleaning fluid is discharged into the wastewater tank 80 through the drain channel 504. The wastewater tank 80 is equipped with a handle for easy removal, and the user can periodically pull the wastewater tank 80 out of the machine body 10 to empty and clean it.

[0065] The sewage tank 80 and the drainage channel 504 can be connected by a quick-release interface, and the sewage tank 80 and the drainage channel 504 can be automatically sealed after installation.

[0066] In some embodiments, the wastewater tank 80 may be located outside the main body 10. The wastewater tank 80 may be a user-configured water bucket or an accessory component of the humidifier 1. The drain channel 504 may extend to the outside of the main body 10 to drain the used cleaning solution into the external wastewater tank 80. In this way, users can select wastewater tanks 80 of different capacities according to their actual needs, which is particularly suitable for scenarios that require long-term continuous operation of the circulating cleaning mode.

[0067] In some embodiments, in the third operating state, the outlet end of the return liquid line 502 is connected to the storage tank 40, so that the humidifier 1 is in the draining mode. Specifically, after the circulation cleaning mode is completed, the water circuit assembly 50 switches to the third operating state, at which time the return liquid line 502 is reconnected to the storage tank 40. The used cleaning solution flows back to the storage tank 40 through the return liquid line 502 for temporary storage, to be disposed of by the user later. This simplifies the internal structure of the humidifier 1; the user only needs to remove the storage tank 40 and empty the waste liquid after the cleaning program is completely finished.

[0068] In some embodiments, the storage tank 40 may be provided with a separate waste liquid chamber specifically for storing used cleaning fluid input through the return line 502. When the feeding component 60 adds cleaning medium to the storage tank 40, the storage tank 40 contains cleaning fluid. Introducing the used cleaning fluid into the separate waste liquid chamber can prevent the used cleaning fluid from mixing with unused cleaning fluid, thus avoiding a reduction in the activity of the unused cleaning fluid. This ensures that the cleaning fluid in the storage tank 40 has good cleaning performance for the next cycle of cleaning, which is especially suitable for scenarios where there is a lot of scale buildup in the wettable substrate 20, requiring multiple cycles of cleaning. When the feeding component 60 adds cleaning medium to the supply line 501, the storage tank 40 contains humidifying water. Introducing the used cleaning fluid into the waste liquid chamber can prevent the humidifying water from being contaminated.

[0069] It should be noted that when the water circuit component 50 is in the third working state, the liquid supply component can be connected to or disconnected from the liquid storage tank 40.

[0070] For example, the liquid supply line 501 remains connected to the liquid storage tank 40. In this case, the humidifying water in the liquid storage tank 40 can be re-injected into the wettable substrate 20 through the liquid supply line 501 to rinse away any residual cleaning liquid. If the liquid storage tank 40 contains cleaning liquid, the cleaning liquid in the liquid storage tank 40 can be injected into the wettable substrate 20 through the liquid supply line 501 to perform a secondary cycle cleaning mode.

[0071] For example, the liquid supply line 501 can also be completely isolated from the liquid storage tank 40, and only the cleaning liquid after use is discharged in a centralized stage, without rinsing and secondary circulation cleaning.

[0072] In some embodiments, the humidifier 1 further includes a switching component 70. The switching component 70 is used to switch the water circuit component 50 between a first operating state, a second operating state, and a third operating state.

[0073] The switching component 70 may include a rotatable distribution plate with different flow channel grooves. By rotating the angle of the distribution plate, the water circuit component 50 can be switched between a first operating state, a second operating state, and a third operating state, respectively.

[0074] Alternatively, the switching component 70 may include a valve assembly, which controls the opening and closing combinations of the valves to switch the water circuit component 50 between a first operating state, a second operating state, and a third operating state.

[0075] In some embodiments, the switching component 70 includes a first valve 701 and a second valve 702.

[0076] In some embodiments, a first valve 701 is disposed on the liquid supply line 501. The first valve 701 is used to connect or disconnect the liquid supply line 501 from the liquid storage tank 40. The first valve 701 can be a two-way valve, with its two ports connected to the liquid storage tank 40 and the liquid supply line 501, respectively.

[0077] In some embodiments, a second valve 702 is disposed on the return line 502. The second valve 702 is used to connect or disconnect the outlet end of the return line 502 from the storage tank 40, the supply line 501, and the drain channel 504 for draining. The second valve 702 is used to control the flow direction switching of the return line 502. The second valve 702 can be a four-way valve, connected to the storage tank 40, the supply line 501, the return line 502, and the drain channel 504 respectively.

[0078] When the water circuit assembly 50 is in the first working state, the first valve 701 connects the liquid storage tank 40 and the liquid supply line 501. The humidifying water in the liquid storage tank 40 can be transported to the wettable substrate 20 through the liquid supply line 501. The second valve 702 connects the return line 502 to the liquid storage tank 40, so that the undried humidifying water can flow back to the liquid storage tank 40, and the humidifier 1 realizes the humidification mode.

[0079] When cleaning fluid is injected into the wettable substrate 20, the water circuit assembly 50 can remain in the first working state, and the first valve 701 remains open for a certain period of time. The water circuit assembly 50 is used to dispense cleaning fluid into the wettable substrate 20.

[0080] When the water circuit assembly 50 is in the second working state, the first valve 701 blocks the connection between the liquid supply line 501 and the liquid storage tank 40, and the second valve 702 switches the return line 502 to connect with the liquid supply line 501, forming a circulation loop of the cleaning liquid, and the humidifier 1 realizes the circulation cleaning mode.

[0081] When the water circuit assembly 50 is in the third working state, the second valve 702 connects the return liquid pipeline 502 to the drain channel 504 to discharge the used cleaning liquid, and the humidifier 1 realizes the drain mode.

[0082] Thus, through the cooperation of the first valve 701 and the second valve 702, the water circuit assembly 50 can be switched in different working states, thereby realizing the humidification mode, circulation cleaning mode and liquid drainage mode of the humidifier 1, and the switching of various modes can be completed without manual intervention.

[0083] In some embodiments, the return line 502 includes a water receiving tray 5021 and a liquid guide tube 5022. A wettable substrate 20 is disposed on the water receiving tray 5021, allowing liquid flowing down from the wettable substrate 20 to be collected by the water receiving tray 5021. The liquid guide tube 5022 communicates with the bottom of the water receiving tray 5021 for discharging the collected liquid.

[0084] The bottom of the water receiving tray 5021 may include a guide wall to facilitate the collection of liquid through the guide wall to the inlet of the liquid guide tube 5022, thereby reducing liquid residue.

[0085] The second valve 702 can be installed in the liquid guide pipe 5022 to control the flow direction of the liquid in the liquid guide pipe 5022. The end of the liquid guide pipe 5022 forms a liquid outlet. Depending on the different mode requirements, the second valve 702 can guide the liquid to the liquid storage tank 40, the liquid supply line 501, or the liquid drainage channel 504.

[0086] In some embodiments, the humidifier 1 further includes a water pump 503. The water pump 503 is disposed in the liquid supply line 501 and is located between the first valve 701 and the wettable substrate 20.

[0087] The inlet of the water pump 503 is connected to the liquid storage tank 40 through the first valve 701, and the outlet of the water pump 503 is connected to the water distribution plate on the top of the substrate 20 that can be wetted.

[0088] The water pump 503 can be a corrosion-resistant magnetic drive pump. When the switching component 70 switches the working state, the water pump 503 can automatically adjust the operating parameters.

[0089] In drainage mode, water pump 503 can be briefly started to assist in emptying residual liquid in return line 502. The operating status of water pump 503 is monitored in real time by a pressure sensor, and it can automatically shut down for protection when abnormal pressure is detected.

[0090] In some embodiments, the humidifier 1 further includes a pH sensor 90. The pH sensor 90 is disposed in the return liquid line 502. If the rate of change of the pH sensor 90 within a first preset time period is lower than a first preset threshold, the liquid supply line 501 stops supplying liquid.

[0091] In the circulating cleaning mode, the pH sensor 90 can detect the pH value of the cleaning solution after use. When the pH value is detected to remain basically stable within a set time, it indicates that the acidic components in the cleaning solution have been consumed, and the current circulating cleaning mode can be ended. Then, it can be determined whether to start the next round of circulating cleaning mode as needed.

[0092] In some embodiments, a heater may also be provided on the liquid supply line 501. The heater can heat the cleaning fluid in the circulating cleaning mode to improve cleaning efficiency. In the humidification mode, the heater can be used to heat the humidification water to improve humidification comfort.

[0093] In some embodiments, the feeding assembly 60 includes a storage box 601. The storage box 601 is connected to the liquid storage tank 40 or the liquid supply line 501 via an openable and closable connection channel 602, and the storage box 601 is used to store cleaning media.

[0094] The storage box 601 is connected to the liquid storage tank 40 or the liquid supply line 501 via an openable and closable connecting channel 602. A solenoid valve can be installed in the connecting channel 602 to control the on / off state. The storage box 601 can be made of corrosion-resistant material. The bottom outlet of the storage box 601 and the connecting channel 602 can be sealed together to ensure the airtightness of the storage box 601 when it is closed.

[0095] In some embodiments, the feeding assembly 60 further includes a metering assembly. The metering assembly is disposed in the connection channel 602 and is used to control the amount of cleaning medium dispensed. For solid cleaning media, the metering assembly can be a screw conveyor mechanism to achieve quantitative dispensing; for liquid cleaning media, the metering assembly can be a micro-metering pump or a metering valve.

[0096] The metering component can adjust the amount of cleaning medium dispensed each time according to cleaning needs. The metering component can be linked with the solenoid valve in the connection channel 602, and the metering component operates after the solenoid valve opens the connection channel 602.

[0097] In some embodiments, the storage tank 40 includes a cover 401. The cover 401 is provided with a feeding port 402 communicating with the connection channel 602. The feeding port 402 is used to introduce the cleaning medium dispensed from the feeding assembly 60 into the storage tank 40. A clearance space may be provided at the center of the cover for placing a water receiving tray 5021.

[0098] In some embodiments, a one-way valve 603 is installed inside the connection channel 602. The one-way valve 603 only allows the cleaning medium to flow from the storage box 601 into the liquid storage tank 40, effectively preventing liquid backflow. The one-way valve 603 is fixed to the inner wall of the connection channel 602 by a snap-fit, facilitating disassembly and cleaning.

[0099] In some embodiments, a sealing structure is provided at the connection between the feeding port 402 and the connecting channel 602. The sealing structure includes an annular sealing groove disposed at the port of the connecting channel 602 and a sealing flange matching the bottom of the feeding port 402. The annular sealing groove and the sealing flange are in a sealing fit.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A humidifier, characterized in that, The humidifier includes: Organism; It can be used to wet the substrate and is disposed inside the machine body; Fan assembly for driving airflow through the wettable substrate; Liquid storage tank, used for storing liquid; The water system assembly includes a liquid supply line for supplying liquid to the wettable substrate and a return line for collecting liquid flowing out of the wettable substrate. The feeding assembly is used to feed the cleaning medium into the storage tank or the supply pipeline.

2. The humidifier according to claim 1, characterized in that, The outlet end of the return pipeline is connected to the storage tank or a drainage channel for draining liquid.

3. The humidifier according to claim 2, characterized in that, The humidifier also includes: The wastewater tank can be detachably disposed within the machine body to receive the liquid discharged from the drain channel, or the wastewater tank can be located outside the machine body to receive the liquid discharged from the drain channel.

4. The humidifier according to claim 2, characterized in that, The humidifier also includes: A first valve is disposed in the liquid supply pipeline, and the first valve is used to connect or block the liquid supply pipeline to the liquid storage tank. A second valve is provided in the return liquid pipeline. The second valve is used to connect or block the outlet end of the return liquid pipeline to the storage tank, the supply liquid pipeline, or the drainage channel.

5. The humidifier according to claim 4, characterized in that, The return pipeline includes: A water collection tray, wherein the wettable substrate is disposed in the water collection tray; A liquid guide tube is connected to the water receiving tray, the second valve is disposed on the liquid guide tube, and the liquid guide tube has the liquid outlet end.

6. The humidifier according to claim 4, characterized in that, The waterway assembly also includes: A water pump is installed in the liquid supply pipeline, and the water pump is located between the first valve and the wettable substrate.

7. The humidifier according to claim 1, characterized in that, The humidifier also includes: A pH sensor is installed in the return liquid pipeline; Specifically, if the rate of change of the pH sensor's detected value within a first preset time period is lower than a first preset threshold, the liquid supply pipeline stops supplying liquid.

8. The humidifier according to any one of claims 1 to 7, characterized in that, The feeding assembly includes: The storage box is connected to the liquid storage tank or liquid supply pipeline through an openable and closable connection channel, and the storage box is used to store the cleaning medium.

9. The humidifier according to claim 8, characterized in that, The feeding assembly also includes: A metering component is disposed in the connection channel, and the metering component is used to quantitatively dispense the cleaning medium into the storage tank or the supply pipeline.

10. The humidifier according to claim 8, characterized in that, The liquid storage tank includes a tank cover, and the tank cover is provided with a feeding port communicating with the connecting channel; The connecting channel is equipped with a one-way valve, which is configured to allow the cleaning fluid to flow unidirectionally from the storage box to the storage tank or the supply pipeline; and / or the connection between the feeding port and the connecting channel is provided with a sealing structure.

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