Water pumps and humidifiers

Abstract

Belonging to the field of water pumps, a water pump and humidifier are disclosed. The invention comprises a stator assembly, a rotor assembly, and an end cover, wherein an impeller is connected to the rotor assembly, and the end cover is configured to enclose at least the rotor assembly and the impeller within a housing chamber, and a hook structure is installed on the side of the end cover facing the impeller, and the hook structure is configured to suspend below the end cover when the impeller is assembled into the housing chamber and when it is removed from the housing chamber, and after the impeller is assembled into the housing chamber, the hook structure does not come into contact with the impeller. The water pump and humidifier according to this application allows for very easy removal and cleaning of the impeller, and can quickly solve the problem of the water pump becoming inoperable due to clogging.

Description

Technical Field

[0001] The present application belongs to the technical field of water pumps for humidifiers, and specifically relates to a water pump and a humidifier using the same.

[0002] (Cross-reference to Related Applications) The present application claims priority based on the Chinese application with application number CN202411081406.7 filed with the China National Intellectual Property Administration on August 8, 2024, entitled "Water Pump and Humidifier", the entire content of which is incorporated into the present application by reference.

Background Art

[0003] A spray-type wet curtain non-fog humidifier is usually provided with a water tank, and the wet curtain is arranged at the upper part of the water tank. A water pump pumps water from the water tank to the upper part of the wet curtain, the spray wets the wet curtain, and a fan is used to blow or suck dry air so that the dry air passes through the wet curtain and releases moisture into the air, thereby achieving the purpose of humidification. After a humidifier has been used for a certain period of time, there is a common problem that scale or accumulated foreign matter easily clogs the water pump, causing the water pump to fail to operate.

Summary of Invention

[0004] The object of the present application is to provide a water pump and a humidifier that can solve, for example, the problem that the water pump cannot operate due to clogging. With the water pump and the humidifier, the impeller can be taken out and cleaned very easily, and the problem that the water pump cannot operate due to clogging can be quickly solved. Embodiments of the present application are implemented as follows.

[0005] Embodiments of this application provide a water pump. The water pump comprises a stator assembly, a rotor assembly, and an end cover, wherein an impeller is connected to the rotor assembly, and the end cover is configured to enclose at least the rotor assembly and the impeller within a housing chamber, and a latching structure is installed on the side of the end cover facing the impeller, and the latching structure is configured to suspend below the end cover when the impeller is assembled into the housing chamber and when it is removed from the housing chamber, and after the impeller is assembled into the housing chamber, the latching structure does not come into contact with the impeller.

[0006] Optionally, the impeller includes an impeller body and a connecting shaft, the impeller body includes a disc and blades connected to the disc, and the connecting shaft has both axial ends connected to the disc and the rotor assembly, respectively.

[0007] Optionally, the engagement structure includes an arc-shaped rib, the inner arc radius of the arc-shaped rib is greater than the radius of the connecting shaft and less than the radius of the disc body, both ends of the arc-shaped rib extend in a direction away from the arc center of the arc-shaped rib to form an extended portion, the extended portion is connected to the end cover, and the arc-shaped rib can engage with the impeller.

[0008] Optionally, the extended portion extends along the edge of the end cover to form an arc-shaped side wall, and an engagement structure is provided on the outside of the arc-shaped side wall, so that the end cover is detachably connected to the stator assembly by the engagement structure.

[0009] Optionally, the end cover and the stator assembly are connected by interference fit.

[0010] Optionally, the engagement structure includes at least three convex ribs, the three convex ribs are evenly distributed along the outer circumference of the end cover, the convex ribs extend a certain distance from the end cover in the axial direction of the connecting shaft before bending toward the center of the disc, the radius of the inscribed circle of the end of all the convex ribs is greater than the radius of the connecting shaft and less than the radius of the disc, and the convex ribs are able to engage with the impeller.

[0011] Optionally, the convex rib is an elastic convex rib.

[0012] Optionally, the convex rib extends along the edge of the end cover to form an arc-shaped side wall, and an engagement structure is provided on the outside of the arc-shaped side wall, so that the end cover is removably connected to the stator assembly by the engagement structure.

[0013] Optionally, the housing chamber includes a rotor housing chamber and an impeller housing chamber, the rotor housing chamber is provided within the stator assembly, a support shaft is installed at the center of the rotor housing chamber, the impeller housing chamber communicates with the rotor housing chamber, the impeller is housed within the impeller housing chamber, the rotor assembly has a central shaft hole, the rotor assembly is housed within the rotor housing chamber, and the support shaft is inserted into the central shaft hole.

[0014] Optionally, the end of the support shaft protrudes from the bottom of the rotor housing chamber and extends into the impeller housing chamber.

[0015] Optionally, a projection base is provided on the support shaft, and the rotor assembly is supported on the projection base, thereby allowing the impeller body to avoid the overhang structure in the axial direction of the connecting shaft.

[0016] Optionally, a clearance groove is provided in the stator assembly at the connection point between the impeller housing chamber and the rotor housing chamber, and when assembling the water pump, the clearance groove is used to avoid the jamming structure.

[0017] Optionally, the water pump further comprises a filtering member, the filtering member being connected to the side of the end cover away from the engagement structure, and the filtering member and the end cover being rotatably engaged.

[0018] Embodiments of this application further provide a humidifier, the humidifier comprising the water pump described above. Optionally, the humidifier may further include a tank, and the water pump may be positioned below the bottom of the tank.

[0019] Optionally, a through-hole is provided at the bottom of the tank, communicating with its interior, a housing is installed outside the tank, the housing is positioned at the location of the through-hole and sealed to the tank, and the water pump is installed inside the housing.

[0020] Optionally, a vibration-damping material is filled between the water pump and the housing.

[0021] Optionally, the humidifier further comprises a constraint detection module, which is configured to determine whether the water pump has become constrained and stopped operating by detecting the current of the water pump.

[0022] Optionally, the humidifier further comprises a display module, which is connected to the restraint detection module, and the display module displays the situation when the water pump is restrained and stops operating.

[0023] The above-mentioned technical proposal of this application has the following beneficial effects compared to the prior art. For example, Regarding a water pump and a humidifier according to an embodiment of the present application, the water pump comprises a stator assembly, a rotor assembly, an end cover and a hooking structure, an impeller is connected to the rotor assembly, the end cover is configured to enclose the rotor assembly, the impeller and the hooking structure in an accommodating chamber, the hooking structure is hung below the end cover, and the hooking structure is configured to hook the impeller when it is necessary to take out the impeller for cleaning; the impeller can be taken out from the accommodating chamber by driving the hooking structure to hook the impeller only by removing the end cover, thereby allowing the impeller to be taken out and cleaned very easily, and the problem that the water pump cannot operate due to clogging can be quickly solved. [BRIEF DESCRIPTION OF THE DRAWINGS]

[0024] [Figure 1] It is a schematic perspective structural view of a water pump according to an embodiment of the present application. [Figure 2] It is an exploded view of the water pump shown in FIG. 1. [Figure 3] It is a cross-sectional view of the water pump shown in FIG. 1. [Figure 4] It is a schematic view showing the assembly of an impeller and a rotor assembly in the water pump shown in FIG. 2. [Figure 5] It is a front view of FIG. 4. [Figure 6] It is a schematic structural view of an end cover connected with a hooking structure according to an embodiment of the present application. [Figure 7] It is a schematic structural view of FIG. 6 viewed from another angle. [Figure 8] It is a schematic structural view of a stator assembly in the water pump shown in FIG. 2. [Figure 9] It is a schematic view showing the assembly of a stator assembly and a rotor assembly in the water pump shown in FIG. 2. [Figure 10] It is a schematic perspective structural view of a water pump according to another embodiment of the present application. [Figure 11] It is a cross-sectional view of the device shown in FIG. 10. [Figure 12] This is a schematic diagram of an end cover connected to an overlay structure according to an embodiment of this application. [Figure 13] This is a schematic perspective view of a humidifier according to an embodiment of this application. [Figure 14] Figure 13 is an exploded view of the humidifier. [Figure 15] Figure 13 is a cross-sectional view of the humidifier. [Figure 16] Figure 15 is a magnified view of area A in the humidifier shown. [Modes for carrying out the invention]

[0025] To more clearly describe the specific embodiments of this application or the technical concepts in the prior art, the drawings used in the specific embodiments or the prior art are briefly described below. The drawings described are only a few embodiments of this application, and those skilled in the art can obtain other relevant drawings based on these drawings without employing inventive capabilities.

[0026] To enable those skilled in the art to better understand and implement this application, the application will be further described below with reference to the drawings and specific embodiments, and the embodiments described herein are not intended to limit this application.

[0027] The embodiments of this application disclose a water pump that allows for very easy removal and cleaning of the impeller, thereby quickly resolving the problem of the water pump becoming inoperable due to clogging.

[0028] As shown in Figures 1, 2, and 3, the water pump comprises a stator assembly 1, a rotor assembly 2, and an end cover 3, with an impeller 4 connected to the rotor assembly 2. The rotor assembly 2 and the impeller 4 may be an integrated structure or separate structures. If the impeller 4 and the rotor assembly 2 are an integrated structure, the rotor assembly 2 can be removed at the same time as the impeller 4. If the impeller 4 and the rotor assembly 2 are separate structures, the impeller 4 can be removed independently.

[0029] A water inlet 34 is provided in the center of the end cover 3, and a water outlet 12 is provided on one side of the stator assembly 1. In an optional embodiment of this application, the end cover 3 and the stator assembly 1 are detachably connected, and a housing chamber 6 is formed inside both when the end cover 3 and the stator assembly 1 are connected, and the stator assembly 1, rotor assembly 2, and impeller 4 are housed in the housing chamber 6 to form a water pump. In another embodiment, the end cover 3 may be connected to other members to form a housing chamber 6 inside which is sealed by the end cover 3, for example, when the water pump is used in a humidifier, the end cover 3 may be connected to the housing of the humidifier to form a housing chamber 6.

[0030] Optionally, a mounting structure 5 is installed on the side of the end cover 3 facing the impeller 4, and the mounting structure 5 is configured to hang below the end cover 3 when assembling the impeller 4 into the housing chamber 6 and when removing it from the housing chamber 6, and after the impeller 4 is assembled into the housing chamber 6, the mounting structure 5 does not come into contact with the impeller 4.

[0031] The water pump according to the embodiment of this application comprises a stator assembly 1, a rotor assembly 2, an end cover 3, and a locking structure 5, with an impeller 4 connected to the rotor assembly 2. The end cover 3 seals the rotor assembly 2, the impeller 4, and the locking structure 5 within a housing chamber 6, and when the end cover 3 is closed, the housing chamber 6 is formed. In a preferred embodiment, the end cover 3 and the stator assembly 1 are detachably connected, and when the end cover 3 and the stator assembly 1 are connected, a closing housing chamber 6 is formed inside both, and the rotor assembly 2, the impeller 4, and the locking structure 5 are sealed within the housing chamber 6. When the connection between the end cover 3 and the stator assembly 1 is released, for example, the end cover 3 is removed from the stator assembly 1, and the locking structure 5 is driven by the end cover 3 to engage with the impeller 4, thereby removing the impeller 4 from the housing chamber 6. Specifically, in the embodiment of this application, the position and structure of the overlay structure 5 are related to the end cover 3 and have at least the following three states.

[0032] Condition 1: When the impeller 4 is assembled inside the housing chamber 6, the support structure 5 is positioned below the end cover 3.

[0033] Condition 2: After the impeller 4 is assembled in the housing chamber 6, the mounting structure 5 is positioned below the end cover 3 and does not come into contact with the impeller 4, thus not interfering with the normal rotation of the impeller 4.

[0034] State 3: When removing the impeller 4 from the housing chamber 6, the hooking structure 5 is hooked under the end cover 3, and when the end cover 3 is removed, the hooking structure hooks onto the impeller 4 located below it, and the impeller 4 is removed from the housing chamber 6 as the end cover 3 is removed.

[0035] The aforementioned mounting structure 5 is mounted below the end cover 3 and is configured to mount on the impeller 4 when it is necessary to remove the impeller 4 for cleaning. By simply removing the end cover 3, the mounting structure 5 can be driven to mount on the impeller 4, allowing the impeller 4 to be removed from the housing chamber 6 without the use of any other tools, which is very ingenious and convenient. This makes it very easy to remove and clean the impeller 4, and quickly solves the problem of the water pump becoming inoperable due to clogging.

[0036] As shown in Figures 4 and 5, the impeller 4 includes an impeller body 41 and a connecting shaft 42, the impeller body 41 includes a disc 411 and blades 412 connected to the disc 411. Optionally, both axial ends of the connecting shaft 42 are connected to the disc 411 and the rotor assembly 2, respectively. Optionally, as shown in Figure 6, the engagement structure 5 includes an arc-shaped rib 51, the arc-shaped rib 51 having an inner arc radius greater than the radius of the connecting shaft 42 and smaller than the radius of the disc 411. Both ends of the arc-shaped rib 51 extend in a direction away from the arc center of the arc-shaped rib 51 to form an extension portion 52, the extension portion 52 is connected to the end cover 3. The arc-shaped rib 51 can engage with the impeller 4.

[0037] The arc-shaped rib 51 is connected to the end cover 3 so as to be suspended from it. After the end cover 3 and the stator assembly 1 are connected, the arc-shaped rib 51 is positioned between the rotor assembly 2 and the disc 411 in the axial direction of the connecting shaft 42, and since the inner arc radius of the arc-shaped rib 51 is greater than the radius of the connecting shaft 42 and smaller than the radius of the disc 411, the arc-shaped rib 51 does not come into contact with the impeller 4 and does not interfere with the normal rotation of the impeller 4. When it is necessary to remove the impeller 4, the connection between the end cover 3 and the stator assembly 1 is released, and then the end cover 3 is moved, causing the blades 412 or the disc 411 to stop the movement of the arc-shaped rib 51, thereby causing the arc-shaped rib 51 to catch on the blades 412 or the disc 411 as it moves with the end cover 3, and removing the impeller 4 from the housing chamber 6.

[0038] Optionally, in order to facilitate the removal of the end cover 3 and the removal of the impeller 4, in the embodiment of this application, the end cover 3 and the stator assembly 1 are removably connected. In a preferred embodiment, as shown in Figures 6, 7, and 8, the extended portion 52 extends along the edge of the end cover 3 to form an arc-shaped side wall 31, and an engagement structure 7 is provided on the outside of the arc-shaped side wall 31, so that the end cover 3 is removably connected to the stator assembly 1 by the engagement structure 7. In one embodiment, the engagement structure 7 includes an engagement projection structure 71 and a first engagement groove 72, wherein the engagement projection structure 71 is provided on the outside of the arc-shaped side wall 31, and the first engagement groove 72 is provided on the inner wall of the housing chamber 6 of the stator assembly 1. When assembling the end cover 3 and the stator assembly 1, the arc-shaped side wall 31 is placed inside the housing chamber 6, and the assembly is performed by engaging the engagement projection structure 71 and the first engagement groove 72. In another embodiment, the positions of the engagement projection structure 71 and the first engagement groove 72 are swapped, i.e., the engagement projection structure 71 is provided on the inner wall of the housing chamber 6 of the stator assembly 1, and the first engagement groove 72 is provided on the arc-shaped side wall 31. In this case as well, a removable assembly of the stator assembly 1 and the end cover 3 can be achieved. The engagement of the engagement projection structure 71 and the first engagement groove 72 enables easy removal of the end cover 3, thereby enabling easy removal of the impeller 4. Of course, the end cover 3 and the stator assembly 1 may be assembled in a way that allows for removal by other structures in the prior art, such as insertion or screw connection.

[0039] Optionally, in other embodiments of this application, the end cover 3 and the stator assembly 1 are connected by an interference fit, and in particular, the end cover 3 is made of plastic, and by utilizing the deformation properties of plastic, the end cover 3 and the stator assembly 1 are connected by an interference fit, which allows for easy removal after assembly and prevents loosening after assembly.

[0040] As shown in Figures 8 and 9, the housing chamber 6 includes a rotor housing chamber 61, which is provided within the stator assembly 1, with a support shaft 63 installed at the center of the rotor housing chamber 61, and the rotor housing chamber 61 is configured to house the rotor assembly 2. As shown in Figure 4, the rotor assembly 2 has a central shaft hole 21, and when assembling the rotor assembly 2, the support shaft 63 is inserted into the central shaft hole 21. By inserting the support shaft 63 into the central shaft hole 21, the rotor assembly 2 can be assembled into the rotor housing chamber 61 very easily and reliably.

[0041] As shown in Figure 8, the housing chamber 6 further includes an impeller housing chamber 62 that communicates with the rotor housing chamber 61, and the impeller housing chamber 62 is configured to house the impeller 4 and the engagement structure 5. Thus, the end cover 3 can house and seal the engagement structure 5, the impeller 4, and the rotor assembly 2 within the housing chamber 6.

[0042] Optionally, as shown in Figures 8 and 9, the end of the support shaft 63 protrudes from the bottom of the rotor housing chamber 61 and extends into the impeller housing chamber 62. The end of the support shaft 63 is positioned to protrude and serve as a positioning and guiding device when assembling the rotor assembly 2 into the rotor housing chamber 61, thereby enabling the rotor assembly 2 to be quickly and accurately installed in the predetermined position.

[0043] In the embodiment of this application, the installation of the engagement structure 5 occupies a certain amount of the internal space of the housing chamber 6, and in particular occupies a certain amount of space in the axial direction of the connecting shaft 42. In this case, it is necessary to consider interference of the engagement structure 5 with the normal operation of the impeller 4. Optionally, as shown in Figures 3, 8, and 9, a projection base 64 is provided on the support shaft 63 in the water pump according to the embodiment of this application, and the rotor assembly 2 is supported by the projection base 64. This provides a gap between the impeller body 41 and the engagement structure 5 in the axial direction of the connecting shaft 42 to avoid the engagement structure 5. In other words, compared to a conventional water pump, in the embodiment of this application, the rotor assembly 2 is supported such that the bottom surface of the impeller body 41 is higher than the top surface of the engagement structure 5 in the axial direction of the connecting shaft 42 in order to avoid interference with the normal operation of the impeller 4.

[0044] Similarly, considering interference of the engagement structure 5 with the normal operation of the impeller 4, in another embodiment of the present application, as shown in Figures 8 and 9, a bypass groove 11 is provided in the stator assembly 1 at the connection point between the impeller housing chamber 62 and the rotor housing chamber 61, so that when the water pump is assembled, the engagement structure 5 is avoided by the bypass groove 11. In other words, compared to a conventional water pump, in the embodiment of the present application, the engagement structure 5 is housed in the bypass groove 11 when the impeller 4 is assembled in the housing chamber 6, and at this time, in the axial direction of the connecting shaft 42, the bottom surface of the impeller body 41 is set higher than the top surface of the engagement structure 5, thereby avoiding interference with the normal operation of the impeller 4.

[0045] In another embodiment of this application, as shown in Figure 10, the water pump further comprises a filtering member 8, the filtering member 8 being connected to the side of the end cover 3 away from the engagement structure 5, so that water enters the water inlet 34 of the water pump via the filtering member 8, and impurities are removed in advance by the filtering member 8, thereby solving to some extent the problem of clogging of the impeller 4 by impurities. The filtering member 8 may be a conventional filter mesh, and by changing the pore size of the filter mesh, impurities of different particle sizes can be blocked. Optionally, the filtering member 8 and the end cover 3 are rotatably engaged. Specifically, as shown in Figures 7 and 10, for example, three engagement blocks are evenly distributed at intervals around the outer circumference of the filtering member 8, three second engagement grooves 32 are evenly distributed at intervals around the side wall of the end cover 3, and the end cover 3 is provided with slide grooves 33 that communicate with each of the second engagement grooves 32. When assembling the filtering member 8, the three engagement blocks are inserted into the three slide grooves 33, and the filtering member 8 is rotated so that the engagement blocks move along the slide grooves 33 and engage with the second engagement grooves 32. When removing the filtering member, the filtering member 8 is rotated in the reverse direction so that the engagement blocks move in the reverse direction and are sequentially released from the second engagement grooves 32 and slide grooves 33. To facilitate the easy attachment and detachment of the filtering member 8, a gripping portion 83 is provided on the housing 82 on which the filter mesh is attached in the filtering member 8, and the gripping portion 83 is formed as the point of force for attaching and detaching the filtering member 8. Optionally, structurally, the filtering member 8 and the end cover 3 are engaged as a single unit, and the impeller 4 can be easily removed by applying force while operating the gripping portion 83.

[0046] Optionally, as shown in Figure 12, an embodiment of the present application discloses another type of water pump. This embodiment differs from the above embodiment in that it has a different design of the engagement structure 5. The engagement structure 5 includes at least three convex ribs 53, the three convex ribs 53 are evenly distributed along the outer circumference of the end cover 3, i.e., the three convex ribs 53 are evenly distributed along the circumferential direction of the end cover 3. The convex ribs 53 extend a certain distance from the end cover 3 in the axial direction of the connecting shaft 42 and then bend toward the center of the plate body 411, the radius of the inscribed circle of the end of all the convex ribs 53 is greater than the radius of the connecting shaft 42, and the radius of the inscribed circle of the end of all the convex ribs 53 is smaller than the radius of the plate body 411. The convex ribs 53 can engage with the impeller 4.

[0047] The number of convex ribs 53 in the engagement structure 5 is three, four, five, or more, and the number is determined in accordance with the number that can actually stably engage with the impeller 4. All convex ribs 53 are evenly distributed at intervals along the outer circumference of the end cover 3 and are connected so as to be suspended from the end cover 3. After the end cover 3 and the stator assembly 1 are connected, all convex ribs 53 are positioned to be suspended between the rotor assembly 2 and the disc body 411 along the axial direction of the connecting shaft 42, and since the radius of the inscribed circle at the end of all convex ribs 53 is greater than the radius of the connecting shaft 42 and less than the radius of the disc body 411, the convex ribs 53 do not come into contact with the impeller 4 and do not interfere with the normal rotation of the impeller 4. If it is necessary to remove the impeller 4, the connection between the end cover 3 and the stator assembly 1 is released, and then the end cover 3 is moved, causing the blades 412 or the disc 411 to stop the protruding ribs 53, so that all the protruding ribs 53 catch on the blades 412 or the disc 411 as they move with the end cover 3, and remove the impeller 4 from the housing chamber 6.

[0048] Optionally, the radius of the rotor assembly 2 is greater than the radius of the connecting shaft 42. In order for the rotor assembly 2 to be successfully assembled into the rotor housing chamber 61, the radius of the inscribed circle at the end of all the convex ribs 53 must be designed to be greater than the radius of the rotor assembly 2. However, in order for the engagement structure 5 to engage with the impeller 4, the radius of the inscribed circle at the end of all the convex ribs 53 must be smaller than the radius of the disc body 411, thus requiring precise machining of the length of the convex ribs 53. To solve this technical problem, in the embodiment of this application, the convex ribs 53 are installed to be elastic convex ribs, and because the convex ribs 53 are elastic, the rotor assembly 2 can be successfully assembled even if the radius of the inscribed circle at the end of all the convex ribs 53 is smaller than the radius of the rotor assembly 2. In specific implementation, force can be applied to the rotor assembly 2 to spread the convex ribs 53 toward the rotor housing chamber 61, thereby enabling the rotor assembly 2 to be successfully assembled into the rotor housing chamber 61.

[0049] Optionally, the convex rib 53 extends along the edge of the end cover 3 to form an arc-shaped side wall 31, and an engagement structure 7 is provided on the outside of the arc-shaped side wall 31, so that the end cover 3 is removably connected to the stator assembly 1 by the engagement structure 7. An embodiment in which the connection between the end cover 3 and the stator assembly 1 is achieved by the engagement structure 7 on the outside of the arc-shaped side wall 31 after the convex rib 53 has extended to form an arc-shaped side wall 31 is the same as in the above embodiment, so its description is omitted here.

[0050] Optionally, embodiments of this application further disclose a humidifier comprising a water pump 100 according to the above embodiment. The water pump 100 can be mounted at any position on the humidifier 200. Because the impeller 4 of the water pump 100 can be removed and cleaned very easily, the humidifier 200 according to the embodiment of this application can solve very easily and quickly the problem of the water pump being constrained and unable to be used properly. Furthermore, because the impeller 4 and rotor assembly 2 can be removed individually, maintenance and replacement are easy, and there is no need to replace the entire water pump, thus reducing maintenance costs.

[0051] For example, specifically as shown in Figures 12 and 13, the humidifier 200 further comprises a tank 9. Optionally, the water pump 100 is installed below the bottom of the tank 9. Specifically, a through hole 91 communicating with the inside of the tank 9 is provided at the bottom of the tank 9, and a housing 10 is installed outside the tank 9, with the housing 10 positioned at the location of the through hole 91 and sealed to the tank 9. The water pump 100 is installed inside the housing 10. Because the tank 9 is for storing water and the water pump 100 is installed below the bottom of the tank 9, the problem of being unable to pump water when the water level in the tank 9 is low and the problem of dry running can be solved. However, because the water pump 100 is at the lowest position, scale can accumulate around the water pump 100, and after a certain period of time, the impeller 4 in the water pump 100 may stop and become stuck due to the scale and solid foreign matter. The humidifier according to the embodiment of this application uses the water pump 100 according to the above embodiment of this application, and therefore can solve very easily and quickly the problem of the water pump being constrained and unable to be used properly.

[0052] For example, specifically, the shape and size of the through-hole 91 are both matched to the end cover 3, and water in the tank 9 enters the water inlet of the end cover 3 through the through-hole 91, and the water is pumped up by the water pump 100. A seal ring 101 is installed at the connection point between the housing 10 and the tank 9 to prevent water leakage between them. The seal ring 101 is made of soft silicone rubber and plays a vibration damping role to some extent, preventing vibrations from the water pump 100 from being directly transmitted to and amplified in the tank 9. A screw-type fixed connection is preferred as the connection method between the housing 10 and the tank 9, as the connection is reliable and stable. As shown in Figure 14, the filtering member 8 is installed inside the tank 9, so that the end cover 3 can be easily removed from inside the tank 9 using the filtering member 8, and the impeller 4 can be removed and cleaned. Of course, if the filtering member 8 is not installed, it is preferable to install the end cover 3 inside the tank 9, and in this case as well, the end cover 3 can be easily operated from inside the tank 9 to remove the impeller 4 and clean it.

[0053] Optionally, as shown in Figures 13 and 14, a vibration damping member 20 is filled between the water pump 100 and the housing 10. Because the vibration damping member 20 is filled between the water pump 100 and the housing 10, vibrations from the water pump 100 are transmitted only to the space defined by the relatively small volume housing 10, resulting in a relatively small amplitude. This prevents vibrations from being directly transmitted to and amplified in the tank compared to the case where the water pump is directly fixed to the bottom of a relatively large, hollow tank, effectively reducing the operating noise of the water pump and improving the user experience.

[0054] Optionally, the humidifier 200 further includes a constraint detection module, which is configured to determine whether the water pump 100 has been constrained and stopped operating by detecting the current of the water pump 100. Specifically, a current threshold is pre-stored in the humidifier 200, and the current value of the water pump 100 is detected in real time or intermittently during operation. If the detected current value is greater than the current threshold, it is determined that the water pump 100 is currently constrained. Optionally, the humidifier 200 further includes a display module. The display module is connected to the constraint detection module, and when the water pump 100 is constrained, this situation is displayed on the display module. This allows the user to intuitively see from the display module that the water pump 100 is constrained, and to check and remove the impeller 4 in a timely manner for cleaning.

[0055] Of course, in other embodiments, the humidifier 200 may further include a warning module that, when it is detected that the water pump 100 is stuck, can issue an audible warning prompting the user to promptly check, remove the impeller 4, and clean it.

[0056] The embodiments described above are merely preferred embodiments provided to fully illustrate the present application, and the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by a person skilled in the art based on this application are within the scope of protection of this application. The scope of protection of this application is as defined in the claims. Industrial applicability

[0057] As described above, the water pump and humidifier according to this disclosure allow for very easy removal and cleaning of the impeller, and can quickly resolve the problem of the water pump becoming inoperable due to clogging. [Explanation of Symbols]

[0058] 100 water pumps 200 Humidifier 1 Stator Assembly 11 Avoidance Groove 12 water outlet 2 Rotor Assembly 21 central shaft hole 3 End cover 31 Arc-shaped side wall 32 Second engagement groove 33 Slide grooves 34 Water inlet 4 Impellers 41 Impeller body 411 Board 412 feathers 42 connecting shafts 5 Hanging structure 51 Arc-shaped ribs 52 Stretching section 53 Convex Rib 6 Confinement Rooms 61 Rotor containment chamber 62 Impeller containment chamber 63 Support shaft 64 Protrusion stand 7 Engagement structure 71 Engagement protrusion structure 72 First engagement groove 8 Filtering member 82 cabinets 83 Gripping part 9 tanks 91 Through hole 10 Housing 101 Seal ring 20 Vibration damping members

Claims

1. The system comprises a stator assembly, a rotor assembly, and an end cover, with an impeller connected to the rotor assembly, and the end cover configured to enclose at least the rotor assembly and the impeller within a housing chamber. A support structure is installed on the side of the end cover facing the impeller, and the support structure is configured to suspend below the end cover when assembling the impeller into the housing chamber and when removing it from the housing chamber, and after the impeller is assembled into the housing chamber, the support structure does not come into contact with the impeller. A water pump characterized by the following features.

2. The impeller includes an impeller body and a connecting shaft. The impeller body includes a disc and blades connected to the disc. The connecting shaft is connected at both ends in the axial direction to the plate body and the rotor assembly, respectively. The water pump according to claim 1.

3. The engagement structure includes an arc-shaped rib, the inner arc radius of the arc-shaped rib is greater than the radius of the connecting shaft and less than the radius of the disc, both ends of the arc-shaped rib extend in a direction away from the arc center of the arc-shaped rib to form an extended portion, the extended portion is connected to the end cover, and the arc-shaped rib can engage with the impeller. The water pump according to claim 2.

4. The extended portion extends along the edge of the end cover to form an arc-shaped side wall, and an engagement structure is provided on the outside of the arc-shaped side wall, so that the end cover is detachably connected to the stator assembly by the engagement structure. The water pump according to claim 3.

5. The end cover and the stator assembly are connected by an interference fit. The water pump according to claim 1.

6. The engagement structure includes at least three convex ribs, the three convex ribs are evenly distributed along the outer circumference of the end cover, the convex ribs extend a certain distance from the end cover in the axial direction of the connecting shaft and then bend toward the center of the disc, the radius of the inscribed circle at the end of all the convex ribs is greater than the radius of the connecting shaft, and the radius of the inscribed circle at the end of all the convex ribs is smaller than the radius of the disc, and the convex ribs are capable of engaging with the impeller. The water pump according to claim 2.

7. The aforementioned convex rib is an elastic convex rib. The water pump according to claim 6.

8. The convex rib extends along the edge of the end cover to form an arc-shaped side wall, and an engagement structure is provided on the outside of the arc-shaped side wall, so that the end cover is removably connected to the stator assembly by the engagement structure. The water pump according to claim 6.

9. The aforementioned housing chamber includes a rotor housing chamber and an impeller housing chamber. The rotor housing chamber is provided within the stator assembly, and a support shaft is installed in the center of the rotor housing chamber. The impeller housing chamber is in communication with the rotor housing chamber, and the impeller is housed within the impeller housing chamber. The rotor assembly has a central shaft hole, the rotor assembly is housed in the rotor housing chamber, and the support shaft is inserted into the central shaft hole. The water pump according to feature 2.

10. The end of the support shaft protrudes from the bottom of the rotor housing chamber and extends into the impeller housing chamber. The water pump according to claim 9.

11. A projection base is provided on the support shaft, and the rotor assembly is supported on the projection base, thereby allowing the impeller body to avoid the overhang structure in the axial direction of the connecting shaft. The water pump according to claim 9.

12. In the stator assembly, a clearance groove is provided at the connection point between the impeller housing chamber and the rotor housing chamber, and when assembling the water pump, the clearance groove avoids the engagement structure. The water pump according to claim 9.

13. The device further comprises a filtering member, the filtering member being connected to the end cover on the side separated from the engagement structure, and the filtering member and the end cover being rotatably engaged. The water pump according to claim 1.

14. The water pump comprises the water pump described in any one of claims 1 to 13. A humidifier characterized by the following.

15. The system further includes a tank, and the water pump is installed in a position below the bottom of the tank. The humidifier according to claim 14.

16. A through-hole is provided at the bottom of the tank, communicating with its interior; a housing is installed outside the tank, the housing is located at the location of the through-hole and is sealed and connected to the tank; and the water pump is installed inside the housing. The humidifier according to claim 15.

17. A vibration damping material is filled between the water pump and the housing. The humidifier according to claim 16.

18. The system further includes a restraint detection module, which is configured to determine whether the water pump has become restrained and stopped operating by detecting the current of the water pump. The humidifier according to claim 14.

19. The system further includes a display module, which is connected to the restraint detection module, and when the water pump is restrained and stops operating, this situation is displayed by the display module. The humidifier according to claim 18.

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