Humidifier

Abstract

The utility model belongs to air treatment equipment technical field, specifically provides a humidifier. The utility model aims at solving the problem that the existing humidifier is easy to make water enter the inside of fan and damage the fan when adding water. For this purpose, the utility model's humidifier includes casing, motor fixed shell, drive motor and impeller. The casing is limited to have the air inlet and the air outlet, and the air outlet is located at the top side of the casing. The motor fixed shell is fixedly connected with the casing or integrally made, and is limited to have the motor installation cavity, and the bottom wall of the motor installation cavity is provided with the through hole. The drive motor is fixedly installed in the motor installation cavity, and the rotating shaft of the drive motor penetrates the through hole. One of the motor fixed shell and the hub of the impeller is provided with the annular groove, and the other of the motor fixed shell and the hub of the impeller is provided with the annular flange, and the annular flange is embedded in the annular groove to form the labyrinth type water retaining structure. The utility model overcomes the above technical problem.

Description

Technical Field

[0001] This utility model belongs to the technical field of air handling equipment, and specifically provides a humidifier. Background Technology

[0002] With the improvement of people's living standards and the increasing requirements for indoor air quality, humidifiers, as electrical devices for regulating indoor humidity, are widely used in various scenarios such as homes, offices, and industrial workshops.

[0003] Many existing humidifiers are equipped with fans to drive the humidified air inside the humidifier out of the humidifier, especially for evaporative humidifiers.

[0004] In conventional humidifiers, the air inlet is typically located on the circumference, the air outlet on the top, and the fan is usually positioned between them. To facilitate water filling, some humidifiers place the water inlet on the top side. However, users may spill water while adding it, causing it to flow from the air outlet into the fan. This water can cause the fan to become unbalanced, leading to vibration. In severe cases, it can even damage the fan or the motor that drives it. Utility Model Content

[0005] One objective of this invention is to solve the problem that water can easily enter the fan and damage the fan when adding water to existing humidifiers.

[0006] To achieve the above objectives, this utility model provides a humidifier, comprising:

[0007] The housing has an air inlet and an air outlet, with the air outlet located on the top side of the housing;

[0008] A motor mounting housing is fixedly connected to or integrally formed with the housing and is located on the bottom side of the air outlet. The motor mounting housing defines a motor mounting cavity, and the bottom wall of the motor mounting cavity is provided with a through hole.

[0009] A drive motor is fixedly installed inside the motor mounting cavity, and the shaft of the drive motor passes through the through hole;

[0010] The impeller includes a hub, a plurality of blades disposed on the outer side of the hub, and a connecting shaft disposed on the inner side of the hub and connected to the rotating shaft; the hub has a clearance cavity facing the drive motor opening;

[0011] One of the motor mounting housing and the wheel hub is provided with an annular groove, and the other of the motor mounting housing and the wheel hub is provided with an annular flange. The annular flange is embedded in the annular groove to form a labyrinth-type water-blocking structure.

[0012] Optionally, the bottom side of the motor mounting housing is provided with an inner convex ring and an outer convex ring, and the annular groove is formed between the inner convex ring and the outer convex ring; the annular flange is formed on the top of the hub.

[0013] Optionally, the hub includes an annular plate connected to the impeller and a base plate connected to the connecting shaft, with the annular flange formed on the top of the base plate.

[0014] Optionally, at least one of the annular plate and the base plate is provided with at least one drainage hole to drain water accumulated inside the hub.

[0015] Optionally, the radial width of the annular groove is 2 to 10 times the radial thickness of the annular flange.

[0016] Optionally, the top side of the motor mounting cavity is provided with an opening; the humidifier also includes a waterproof component installed on the motor mounting housing to close the opening.

[0017] Optionally, the humidifier further includes an air outlet grille disposed on the top side of the waterproof component and a flow guide shroud located radially outward of the impeller, the air outlet being formed on the air outlet grille; a water inlet is disposed in the middle of the air outlet grille; the waterproof component is provided with a water receiving cavity aligned with the water inlet and a flow guiding channel communicating with the water receiving cavity, the flow guiding channel extending to the inner peripheral wall of the flow guide shroud to guide water injected from the water inlet to the inner peripheral wall of the flow guide shroud.

[0018] Optionally, the humidifier further includes a water tank disposed at the inner bottom of the housing, and the humidifier is configured such that water added from the air outlet can flow into the water tank via the air deflector.

[0019] Optionally, the humidifier further includes a water absorption and evaporation component and a water pumping system. The water absorption and evaporation component is disposed between the air inlet and the air outlet in the airflow path. The water pumping system is used to transport water from the water tank to the water absorption and evaporation component.

[0020] Optionally, the air inlet is located on the circumferential wall of the housing; the water absorption and evaporation component is cylindrical.

[0021] Based on the foregoing description, those skilled in the art will understand that in the aforementioned technical solution of this utility model, by providing an annular groove in one of the motor mounting housing and the hub, and an annular flange in the other, with the annular flange embedded in the annular groove, a labyrinth-type water-blocking structure is formed, effectively preventing water from entering the fan (impeller and drive motor) when the humidifier is being filled. Therefore, this utility model effectively avoids the problem of the fan being damaged by water ingress.

[0022] Furthermore, by providing at least one drainage hole in at least one of the annular plate and the base plate, water accumulated inside the hub can be discharged. Even if water enters the interior of the impeller, it can be discharged through the drainage hole, thus improving the safety and reliability of the fan.

[0023] Furthermore, by making the radial width of the annular groove 2 to 10 times the radial thickness of the annular flange, sufficient clearance is ensured between the hub and the motor mounting housing to prevent interference between the hub and the motor mounting housing, which would affect the impeller rotation.

[0024] Other beneficial effects of this utility model will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the improvement purpose, features and advantages of this utility model. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this utility model, some embodiments of this utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the same reference numerals may indicate the same or similar components or parts in different drawings; the drawings of this utility model are not necessarily drawn to scale. In the drawings:

[0026] Figure 1 This is a perspective view of the humidifier in some embodiments of this utility model;

[0027] Figure 2 yes Figure 1 medium humidifier along Figure 1 Cross-sectional view (stereoscopic view) along the AA direction;

[0028] Figure 3 yes Figure 1 medium humidifier along Figure 1 A sectional view (plan view) along the AA direction;

[0029] Figure 4 yes Figure 3 Enlarged view of section F in the middle;

[0030] Figure 5 yes Figure 3 medium humidifier along Figure 1 Cross-sectional view (stereoscopic view) along the BB direction;

[0031] Figure 6 This is a first perspective view of the waterproof component in some embodiments of this utility model;

[0032] Figure 7 This is a second perspective view of the waterproof component in some embodiments of this utility model;

[0033] Figure 8 This is a first perspective view of the impeller in some embodiments of this utility model;

[0034] Figure 9 yes Figure 8 A cross-sectional view of the intermediate impeller along the CC direction;

[0035] Figure 10 This is a second perspective view of the impeller in some embodiments of this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 001. Humidifier;

[0038] 100. Housing; 101. Air inlet; 102. Air outlet;

[0039] 200. Motor mounting housing; 201. Annular groove; 210. Motor mounting cavity; 211. Opening; 212. Through hole; 220. Inner convex ring; 230. Outer convex ring;

[0040] 300. Drive motor; 310. Rotating shaft;

[0041] 400, Impeller; 401, Drainage hole; 410, Hub; 4101, Clearance cavity; 411, Annular plate; 4111, Annular flange; 412, Base plate; 413, Reinforcing rib; 420, Blade; 430, Connecting shaft; 431, Insertion hole;

[0042] 500. Waterproof component; 510. Water inlet cavity; 520. Drainage channel;

[0043] 600. Air vent grille; 601. Water inlet;

[0044] 700, fairing;

[0045] 810. Water tank; 820. Water absorption and evaporation components; 830. Water pumping system; 831. Water pump; 832. Water pipe. Detailed Implementation

[0046] Those skilled in the art should understand that the embodiments described below are merely some embodiments of the present invention, and not all embodiments of the present invention. These embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

[0047] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the corresponding device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. For example, unless otherwise specified, the terms "installation," "connection," "joining," and "fixing" can specifically refer to any feasible connection form such as bolt connection, screw connection, welding, insertion, riveting, fusion welding, or snap-fit.

[0049] Furthermore, it should be noted that in the description of this utility model, mm represents millimeter, cm represents centimeter, and m represents meter.

[0050] like Figures 1 to 5 As shown, in some embodiments of this utility model, the humidifier 001 includes a housing 100, a motor mounting housing 200, a drive motor 300, an impeller 400, a waterproof component 500, an air outlet grille 600, a flow guide 700, a water tank 810, a water absorption and evaporation component 820, and a water pumping system 830.

[0051] Furthermore, those skilled in the art may omit at least one of the following components as needed: housing 100, motor mounting housing 200, drive motor 300, impeller 400, waterproof component 500, air outlet grille 600, air guide shroud 700, water tank 810, water absorption and evaporation component 820, and water pumping system 830. For example, the water absorption and evaporation component 820 and water pumping system 830 may be omitted, and an atomizer may be provided for the humidifier 001. As another example, the water pumping system 830 may be omitted, and the water tank 810 may be positioned above the water absorption and evaporation component 820, allowing the water in the water tank 810 to flow to the water absorption and evaporation component 820 under its own gravity.

[0052] The housing 100 includes an air inlet 101 and an air outlet 102. The air inlet 101 is located on the circumferential wall of the housing 100, and the air outlet 102 is located on the top side of the housing 100.

[0053] The motor mounting housing 200 is fixedly connected to or integrally formed with the housing 100 and is located on the bottom side of the air outlet 102. The motor mounting housing 200 defines a motor mounting cavity 210 (e.g., Figure 4 As shown), the top side of the motor mounting cavity 210 is provided with an opening 211 (as shown). Figure 3 As shown), the bottom wall of the motor mounting cavity 210 is provided with a through hole 212 (as shown). Figure 4 (As shown).

[0054] The drive motor 300 is fixedly installed inside the motor mounting cavity 210, and the shaft 310 of the drive motor 300 passes through the through hole 212. The impeller 400 is fixedly connected to the shaft 310.

[0055] The waterproof component 500 is installed on the motor mounting housing 200 to seal the opening 211 and prevent water from entering the motor mounting cavity 210 through the opening 211 and damaging the drive motor 300.

[0056] The air outlet grille 600 is located on the top side of the waterproof component 500, and the air outlet 102 is formed on the air outlet grille 600.

[0057] The deflector 700 is located on the radial outer side of the impeller 400. The deflector 700 is used to restrict the air driven by the impeller 400 in order to improve the driving efficiency of the impeller 400 on the air.

[0058] The water tank 810 is located inside the casing 100 and is used to hold the water added by the user.

[0059] The water-absorbing and evaporating component 820 is positioned between the air inlet 101 and the air outlet 102 along the airflow path. When the drive motor 300 operates, the impeller 400 drives the air to flow sequentially through the air inlet 101, the water-absorbing and evaporating component 820, and the air outlet 102. During this process, the airflow carries away moisture from the water-absorbing and evaporating component 820, creating air with higher humidity and humidifying the environment. The water-absorbing and evaporating component 820 can be made of any feasible material, such as cloth, porous ceramics, or porous metal.

[0060] The water pumping system 830 is used to transport water from the water tank 810 to the water absorption and evaporation component 820 to ensure that the water absorption and evaporation component 820 can absorb enough water to humidify the airflow.

[0061] The following reference Figures 2 to 10 The humidifier 001 in some embodiments of this utility model will be further described below.

[0062] like Figure 2 , Figure 3 and Figure 5 As shown, in some embodiments of this utility model, the air outlet grille 600 is mounted on the motor mounting housing 200.

[0063] Continue reading Figure 2 , Figure 3 and Figure 5 In some embodiments of this utility model, the water tank 810 is located directly below the air outlet grille 600 so that the user can add water to the water tank 810 through the air outlet 102.

[0064] from Figure 2 , Figure 3 and Figure 5 As can be seen, the waterproof component 500 is positioned between the air outlet grille 600 and the water tank 810, so that water is collected directly above the water tank 810 through the waterproof component 500.

[0065] Continue reading Figure 2 , Figure 3 and Figures 5 to 7 In some embodiments of this utility model, a water inlet 601 is provided in the middle of the air outlet grille 600. The waterproof component 500 is provided with a water receiving cavity 510 aligned with the water inlet 601 and a drainage channel 520 communicating with the water receiving cavity 510. The drainage channel 520 extends to the inner peripheral wall of the guide shroud 700 to guide the water injected from the water inlet 601 to the inner peripheral wall of the guide shroud 700.

[0066] Those skilled in the art will understand that when a user adds water to the humidifier 001 through the water inlet 601, the water will enter the water receiving chamber 510 through the water inlet 601, then flow through the flow channel 520 to the inner peripheral wall of the flow guide 700, and finally flow into the water tank 810.

[0067] from Figure 2 , Figure 3 and Figure 5 As can be seen, the water tank 810 is located at the bottom of the housing 100, and the humidifier 001 is configured to allow liquid added from the air outlet 102 to flow into the water tank 810.

[0068] like Figure 2 , Figure 3 and Figure 5 As shown, in some embodiments of this utility model, the water-absorbing evaporation member 820 is configured as a cylinder so that airflow passes through the water-absorbing evaporation member 820 radially. Furthermore, a gap (not marked in the figure) is formed between the water-absorbing evaporation member 820 and the peripheral wall of the housing 100 so that the airflow entering from the air inlet 101 can be evenly distributed in the gap and then evenly pass through the water-absorbing evaporation member 820.

[0069] Continue reading Figure 2 , Figure 3 and Figure 5 In some embodiments of this utility model, the water pumping system 830 includes a water pump 831 and a water pipe 832, which extends from the water pump 831 to the top of the water absorption and evaporation component 820. When the water pump 831 is working, it delivers water from the water tank 810 to the top of the water absorption and evaporation component 820 through the water pipe 832.

[0070] Continue reading Figure 2 , Figure 3 and Figure 5 In some embodiments of this utility model, the top of the water-absorbing evaporation component 820 is provided with an annular water-holding tank (not marked in the figure), and the bottom wall of the water-holding tank is provided with a plurality of spaced-apart drainage holes (not marked in the figure). The water pipe 832 delivers water to the water-holding tank, and the water in the water-holding tank is evenly sprayed onto the water-absorbing evaporation component 820 through the drainage holes.

[0071] like Figures 8 to 10 As shown, in some embodiments of this utility model, the impeller 400 includes a hub 410, a plurality of blades 420 disposed on the outer side of the hub 410, and a connecting shaft 430 disposed on the inner side of the hub 410.

[0072] The hub 410 has a clearance cavity 4101 opening toward the drive motor 300 to allow passage of the drive motor 300's shaft 310. The hub 410 includes an annular plate 411 connected to the impeller 400 and a base plate 412 connected to a connecting shaft 430. At least one of the annular plate 411 and the base plate 412 is provided with at least one drain hole 401 to drain water accumulated inside the hub 410. The connecting shaft 430 extends from the base plate 412 toward the shaft 310 to connect to the shaft 310.

[0073] Those skilled in the art will understand that by providing at least one drainage hole 401 in at least one of the annular plate 411 and the base plate 412, water accumulated in the hub 410 is drained, ensuring the dynamic balance of the impeller 400 during rotation and preventing eccentric vibration of the impeller 400. Furthermore, water on the blades 420, under the influence of its own gravity and the centrifugal force during the rotation of the blades 420, will quickly detach from the blades 420, further ensuring the dynamic balance of the impeller 400 during rotation and preventing eccentric vibration of the impeller 400.

[0074] Furthermore, the drain hole 401 is provided on the circumferential edge of the base plate 412 near the annular plate 411; and / or, the drain hole 401 is provided on the shaft end of the annular plate 411 near the base plate 412, so that the water in the hub 410 can flow quickly to the drain hole 401 and be discharged under the action of centrifugal force.

[0075] Furthermore, there are multiple drainage holes 401, which are evenly distributed around the connecting shaft 430 so that the center of gravity of the impeller 400 is basically coincident with the shaft 310 of the impeller 400, thus preventing the impeller 400 from vibrating eccentrically.

[0076] like Figure 8 and Figure 9 As shown, the inner peripheral wall of the annular plate 411 is provided with a plurality of reinforcing ribs 413 extending from the bottom plate 412 toward the drive motor 300 to improve the structural strength of the hub 410.

[0077] like Figure 9 As shown, in some embodiments of this utility model, the drain hole 401 can be set at the root of the reinforcing rib 413, and the drain hole 401 is located on the windward or leeward side of the reinforcing rib 413, so that when the hub 410 rotates, the reinforcing rib 413 guides the water in the hub 410 to the drain hole 401, thereby preventing water from stagnating at the reinforcing rib 413.

[0078] like Figure 9 and Figure 10 As shown, in some embodiments of this utility model, the connecting shaft 430 is provided with an insertion hole 431 that is adapted to the rotating shaft 310 of the drive motor 300, so that the connecting shaft 430 and the rotating shaft 310 can be inserted together.

[0079] Furthermore, in some embodiments of this utility model, one of the motor mounting housing 200 and the hub 410 is provided with an annular groove 201, and the other of the motor mounting housing 200 and the hub 410 is provided with an annular flange 4111. The annular flange 4111 is embedded in the annular groove 201 to form a labyrinth-type water-blocking structure.

[0080] Those skilled in the art will understand that by providing an annular groove 201 in one of the motor mounting housing 200 and the hub 410, and providing an annular flange 4111 in the other of the motor mounting housing 200 and the hub 410, and embedding the annular flange 4111 into the annular groove 201, a labyrinth-type water-blocking structure is formed, effectively preventing water from entering the fan (impeller 400 and drive motor 300) when the humidifier 001 is filled with water. Therefore, this utility model effectively avoids the problem of the fan being damaged by water ingress.

[0081] like Figure 4 As shown, an inner convex ring 220 and an outer convex ring 230 may be provided on the bottom side of the motor mounting housing 200, so that an annular groove 201 is formed between the inner convex ring 220 and the outer convex ring 230. An annular flange 4111 is formed on the top of the hub 410.

[0082] like Figure 8 and Figure 9 As shown, an annular flange 4111 is formed on the top of the base plate 412.

[0083] Furthermore, the radial width of the annular groove 201 is 2 to 10 times the radial thickness of the annular flange 4111 to ensure that there is sufficient clearance between the hub 410 and the motor mounting housing 200 to prevent interference between the hub 410 and the motor mounting housing 200 and affect the rotation of the impeller 400.

[0084] Specifically, the ratio of the radial width of the annular groove 201 to the radial thickness of the annular flange 4111 can be any feasible value such as 2, 3, 4, 4.5, 5, 7, 8, 9.5, 10, etc.

[0085] The technical solution of this utility model has been described in conjunction with several embodiments above. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is not limited to these specific embodiments. Without departing from the technical principles of this utility model, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to the relevant technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of this utility model will fall within the protection scope of this utility model.

[0086] Finally, it should be noted that in this invention, the term "connection" refers to fluid communication, allowing fluid (e.g., air, liquid) to flow between two interconnected entities. Furthermore, this "connection" can be either a leak-free flow of fluid between two interconnected entities, or a flow with slight leakage between two interconnected entities.

Claims

1. A humidifier, characterized in that, include: The housing has an air inlet and an air outlet, with the air outlet located on the top side of the housing; A motor mounting housing is fixedly connected to or integrally formed with the housing and is located on the bottom side of the air outlet. The motor mounting housing defines a motor mounting cavity, and the bottom wall of the motor mounting cavity is provided with a through hole. A drive motor is fixedly installed inside the motor mounting cavity, and the shaft of the drive motor passes through the through hole; The impeller includes a hub, a plurality of blades disposed on the outer side of the hub, and a connecting shaft disposed on the inner side of the hub and connected to the rotating shaft; the hub has a clearance cavity facing the drive motor opening; One of the motor mounting housing and the wheel hub is provided with an annular groove, and the other of the motor mounting housing and the wheel hub is provided with an annular flange. The annular flange is embedded in the annular groove to form a labyrinth-type water-blocking structure.

2. The humidifier according to claim 1, characterized in that, The bottom side of the motor mounting housing is provided with an inner convex ring and an outer convex ring, and the annular groove is formed between the inner convex ring and the outer convex ring; The annular flange is formed on the top of the hub.

3. The humidifier according to claim 1, characterized in that, The hub includes an annular plate connected to the impeller and a base plate connected to the connecting shaft. The annular flange is formed on the top of the base plate.

4. The humidifier according to claim 3, characterized in that, At least one of the annular plate and the base plate is provided with at least one drainage hole to drain water accumulated inside the hub.

5. The humidifier according to claim 1, characterized in that, The radial width of the annular groove is 2 to 10 times the radial thickness of the annular flange.

6. The humidifier according to any one of claims 1 to 5, characterized in that, The top side of the motor mounting cavity is provided with an opening; The humidifier also includes a waterproof component mounted on the motor housing to seal the opening.

7. The humidifier according to claim 6, characterized in that, The humidifier also includes an air outlet grille disposed on the top side of the waterproof component and a guide shroud located radially outside the impeller, with the air outlet formed on the air outlet grille; A water inlet is provided in the middle of the air outlet grille; The waterproof component is provided with a water receiving cavity aligned with the water inlet and a drainage channel communicating with the water receiving cavity. The drainage channel extends to the inner peripheral wall of the guide shroud to guide the water injected from the water inlet to the inner peripheral wall of the guide shroud.

8. The humidifier according to claim 7, characterized in that, The humidifier also includes a water tank disposed at the inner bottom of the housing, and the humidifier is configured such that water added from the air outlet can flow into the water tank via the air deflector.

9. The humidifier according to claim 8, characterized in that, The humidifier also includes a water absorption and evaporation component and a water pumping system. The water-absorbing and evaporating component is disposed between the air inlet and the air outlet along the air flow path; The pump system is used to transport water from the water tank to the water absorption and evaporation component.

10. The humidifier according to claim 9, characterized in that, The air inlet is located on the circumferential wall of the housing; The water-absorbing and evaporating component is cylindrical.

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