Water pump and dehumidifier

Abstract

This utility model discloses a water pump and a dehumidifier. The water pump includes a housing, a rotor assembly, an impeller, and baffles. The housing forms a receiving cavity with an inlet and an outlet. The rotor assembly is disposed within the receiving cavity and includes a shaft and a rotor. The rotor is sleeved outside the shaft and drives the shaft to rotate. The impeller is connected to the shaft, and the shaft drives the impeller to rotate, for discharging liquid entering the receiving cavity from the inlet from the outlet. Baffles are disposed between the rotor and the impeller, with the rotor passing through the baffles and connected to the impeller. The baffles are in linear contact with the shaft. By forming a linear contact between the baffles and the shaft, the contact area between the baffles and the shaft is reduced. When liquid enters between the shaft and the baffles, it avoids the formation of large adhesive forces due to liquid surface tension, reducing the possibility of shaft jamming, ensuring the efficiency of normal water pump operation, and effectively improving the reliability of the water pump.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, and in particular to a water pump and a dehumidifier. Background Technology

[0002] In the prior art, the circular hole on the water baffle of the water pump has a smooth surface. The rotating shaft fits into the circular hole and rotates inside the circular hole. When there is water between the rotating shaft and the circular hole, the rotating shaft is prone to jamming due to the high viscosity of the water surface tension, which reduces the reliability of the water pump. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a water pump that can improve the reliability of the water pump.

[0004] The second objective of this invention is to provide a dehumidifier, including the water pump described in the above embodiments.

[0005] According to a first aspect embodiment of the present invention, the water pump includes: a housing, a rotor assembly, an impeller, and a baffle. The housing forms a receiving cavity, which has an inlet and an outlet. The rotor assembly is disposed within the receiving cavity and includes a rotating shaft and a rotor. The rotor is sleeved outside the rotating shaft and drives the rotating shaft to rotate. The impeller is connected to the rotating shaft, and the rotating shaft drives the impeller to rotate, for discharging liquid entering the receiving cavity from the inlet from the outlet. The baffle is disposed between the rotor and the impeller, and the rotor passes through the baffle and is connected to the impeller. The baffle is in linear contact with the rotating shaft.

[0006] According to the embodiments of the present invention, the water pump forms a linear contact between the baffle and the rotating shaft, which can reduce the contact area between the baffle and the rotating shaft. When liquid enters between the rotating shaft and the baffle, it can avoid the formation of a large adhesive force between the rotating shaft and the baffle due to the surface tension of the liquid, reduce the possibility of the rotating shaft jamming, ensure the efficiency of normal operation of the water pump, and effectively improve the reliability of the water pump.

[0007] In some embodiments, the baffle has a through hole, the rotating shaft engages with the through hole, and a protrusion is provided on one of the outer wall of the rotating shaft and the inner wall of the through hole. The protrusion extends spirally along the axial direction of the rotating shaft from one end of the rotating shaft adjacent to the rotor to one end away from the rotor, on the outer wall of the rotating shaft and the inner wall of the through hole.

[0008] This minimizes the contact area between the inner wall of the through hole and the corresponding outer wall of the shaft, ensuring normal shaft rotation and thus ensuring normal pump operation.

[0009] In some embodiments, the direction of rotation of the shaft is opposite to the direction of spiral extension of the protrusion.

[0010] This creates a reverse thrust between impurities and the protrusions, reducing the amount of impurities entering the gap between the through hole and the shaft, preventing impurities from getting stuck between the shaft and the baffle. At the same time, the reverse thrust can carry away impurities between the shaft and the baffle, ensuring the normal operation of the water pump, extending its service life, and improving its reliability.

[0011] In some embodiments, the protrusion is disposed within the through hole, the protrusion is radially toward the center of the through hole along the axis of rotation, and the cross-sectional area of ​​the protrusion gradually decreases.

[0012] This facilitates linear contact between the protrusion and the outer wall of the shaft, effectively reducing the contact area between the protrusion and the outer wall of the shaft, reducing the possibility of shaft jamming, ensuring normal operation of the water pump, and improving the reliability of the water pump.

[0013] In some embodiments, the protrusion is provided on the rotating shaft, the protrusion is oriented radially away from the center of the rotating shaft, and the cross-sectional area of ​​the protrusion gradually decreases.

[0014] This facilitates linear contact between the protrusion and the inner wall of the through hole, effectively reducing the contact area between the protrusion and the inner wall of the through hole, reducing the possibility of shaft jamming, ensuring normal operation of the water pump, improving the reliability of the water pump, reducing the processing difficulty of the protrusion, and improving processing efficiency.

[0015] In some embodiments, the protrusion is disposed within the through hole, and the surface of the protrusion that contacts the rotating shaft is an arc surface; or, the protrusion is disposed on the rotating shaft, and the surface of the protrusion that contacts the through hole is an arc surface.

[0016] This effectively reduces the contact area between the protrusion and the outer wall of the shaft or the inner wall of the through hole, reduces the possibility of shaft jamming, ensures normal operation of the water pump, and improves the reliability of the water pump.

[0017] In some embodiments, the cross-sectional shape of the protrusion is triangular.

[0018] This facilitates linear contact between the protrusion and the outer wall of the shaft or the inner wall of the through hole, effectively reducing the contact area between the protrusion and the outer wall of the shaft or the inner wall of the through hole, reducing the possibility of shaft jamming, ensuring normal operation of the water pump, and improving the reliability of the water pump.

[0019] In some embodiments, the housing includes: a first housing portion and a second housing portion, the first housing portion and the second housing portion being connected, a baffle being disposed between the first housing portion and the second housing portion, and the baffle being detachably engaged with at least one of the first housing portion and the second housing portion.

[0020] This improves the assembly efficiency of the water pump, facilitates the installation of internal structural components, reduces the amount of liquid entering the first housing from the second housing, enhances the safety of the water pump, and facilitates the installation and removal of the baffles.

[0021] In some embodiments, at least one of the first housing portion and the second housing portion is provided with a mounting groove, and the baffle is disposed in the mounting groove.

[0022] This improves the reliability and stability of the baffle installation and prevents the baffle from falling off.

[0023] The dehumidifier according to a second aspect of the present invention includes the water pump described in any of the above embodiments.

[0024] This ensures the dehumidifier functions properly and improves its reliability.

[0025] Additional aspects and advantages of this invention 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 invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a cross-sectional schematic diagram of a water pump according to an embodiment of the present utility model;

[0028] Figure 2 yes Figure 1 Enlarged schematic diagram of region P in the middle;

[0029] Figure 3 This is a cross-sectional schematic diagram of the baffle according to an embodiment of the present utility model;

[0030] Figure 4 yes Figure 3 Enlarged schematic diagram of the mid-Q region;

[0031] Figure 5 This is a schematic diagram of a water pump according to an embodiment of the present utility model;

[0032] Figure 6 This is a schematic diagram of a water pump according to another perspective of an embodiment of the present utility model.

[0033] Figure label:

[0034] 100. Water pump;

[0035] 10. Shell; 11. First shell section; 12. Second shell section; 13. Inlet; 14. Outlet;

[0036] 20. Rotor assembly; 21. Shaft; 22. Rotor;

[0037] 30. Impeller;

[0038] 40. Baffle; 41. Through hole; 42. Protrusion. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figures 1-6 The water pump 100 according to an embodiment of the present utility model includes: a housing 10, a rotor assembly 20, an impeller 30, and baffles 40.

[0040] Specifically, such as Figure 1 As shown, the housing 10 forms a receiving cavity, which has an inlet 13 and an outlet 14; the rotor assembly 20 is disposed in the receiving cavity, and the rotor assembly 20 includes a rotating shaft 21 and a rotor 22, with the rotor 22 sleeved outside the rotating shaft 21, and the rotor 22 driving the rotating shaft 21 to rotate; the impeller 30 is connected to the rotating shaft 21, and the rotating shaft 21 drives the impeller 30 to rotate, for discharging the liquid that enters the receiving cavity from the inlet 13 from the outlet 14; the baffle 40 is disposed between the rotor 22 and the impeller 30, and the rotor 22 passes through the baffle 40 and is connected to the impeller 30, with the baffle 40 in linear contact with the rotating shaft 21.

[0041] A receiving cavity is formed within the housing 10, where the rotor assembly 20, impeller 30, and baffle 40 are all disposed. The rotor 22 extends along the height direction of the water pump 100 and is rotatable within the receiving cavity. The rotor 22 and impeller 30 are spaced apart along the height direction of the water pump 100, which is the axial direction of the rotating shaft 21. One end of the rotating shaft 21, adjacent to the rotor 22 along the height direction of the water pump 100, passes through the interior of the rotor 22 and engages with it. Simultaneously, this other end of the rotating shaft 21 extends out of the rotor 22 and is rotatably connected to the housing 10, allowing the rotating shaft 21 to rotate around its own central axis under the drive of the rotor 22. A baffle 40 is disposed between the rotor 22 and the impeller 30 along the height direction of the pump 100. The baffle 40 is adapted to prevent liquid from flowing from the side of the baffle 40 adjacent to the impeller 30 to the side of the baffle 40 adjacent to the rotor 22. The end of the rotating shaft 21 away from the rotor 22 along the height direction of the pump 100 passes through the baffle 40 and cooperates with the impeller 30 to fix the impeller 30, so that the rotating shaft 21 drives the impeller 30 to rotate. The impeller 30 is adapted to discharge the liquid entering the receiving cavity from the inlet 13 from the outlet 14. The baffle 40 and the rotating shaft 21 passing through it form a linear contact to reduce the contact area between the baffle 40 and the rotating shaft 21. The linear contact between the baffle 40 and the rotating shaft 21 includes, but is not limited to, line-surface contact and line-to-line contact.

[0042] According to the embodiment of the present invention, the water pump 100 forms a linear contact between the baffle 40 and the rotating shaft 21, which can reduce the contact area between the baffle 40 and the rotating shaft 21 through which it passes. When liquid enters between the rotating shaft 21 and the baffle 40, it can avoid the formation of a large adhesive force between the rotating shaft 21 and the baffle 40 due to the surface tension of the liquid, reduce the possibility of the rotating shaft 21 getting stuck, ensure the efficiency of normal operation of the water pump 100, and effectively improve the reliability of the water pump 100.

[0043] According to some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the baffle 40 has a through hole 41, the rotating shaft 21 is fitted with the through hole 41, and a protrusion 42 is provided on one of the outer wall of the rotating shaft 21 and the inner wall of the through hole 41. The protrusion 42 extends spirally along the axial direction of the rotating shaft 21, that is, the height direction of the water pump 100, from the end of the rotating shaft 21 adjacent to the rotor 22 to the end away from the rotor 22, on the one of the outer wall of the rotating shaft 21 and the inner wall of the through hole 41.

[0044] A through hole 41 penetrates the central region of the baffle 40 along the height direction of the water pump 100. The end of the rotating shaft 21 away from the rotor 22 along the height direction of the water pump 100 passes through the through hole 41 and mates with it. A protrusion 42 can be provided on the inner wall of the through hole 41 or on the outer wall of the rotating shaft 21 that mates with the through hole 41. The protrusion 42 extends spirally around the through hole 41 from the end adjacent to the rotor 22 toward the end away from the rotor 22 along the height direction of the water pump 100. In this application, the protrusion 42 is provided on the inner wall of the through hole 41 and extends spirally from one end of the through hole 41 to the other along the axial direction of the rotating shaft 21 on the inner wall of the through hole 41, thereby reducing the contact area between the baffle 40 and the rotating shaft 21 and reducing the surface tension of the water at the gap. Therefore, a protrusion 42 is provided on one of the inner walls of the rotating shaft 21 and the through hole 41, which can minimize the contact area between the inner wall of the through hole 41 and the corresponding outer wall of the rotating shaft 21, ensuring that the rotating shaft 21 rotates normally, and ensuring that the water pump 100 operates normally.

[0045] According to some embodiments of the present invention, the direction of rotation of the shaft 21 is opposite to the direction of spiral extension of the protrusion 42.

[0046] That is, the direction of rotation of the shaft 21 is opposite to the direction of spiral extension of the protrusion 42 along the height direction of the pump 100 from one end adjacent to the rotor 22 toward the end away from the rotor 22. For example, the shaft 21 rotates counterclockwise along its own central axis, and the protrusion 42 extends clockwise around the central axis of the shaft 21 from one end adjacent to the rotor 22 toward the end away from the rotor 22 on the inner wall of the through hole 41. Thus, when impurities in the receiving cavity enter between the through hole 41 and the corresponding shaft 21, since the direction of rotation of the shaft 21 is opposite to the direction of spiral extension of the protrusion 42, a reverse thrust can be formed between the impurities and the protrusion 42, thereby reducing the amount of impurities entering the gap between the through hole 41 and the shaft 21, preventing impurities from getting stuck between the shaft 21 and the baffle 40. At the same time, the reverse thrust can carry away the impurities between the shaft 21 and the baffle 40, ensuring the normal operation of the pump 100, extending the service life of the pump 100, and improving the reliability of the pump 100.

[0047] According to some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the protrusion 42 is provided inside the through hole 41, and the protrusion 42 is directed toward the center of the through hole 41 along the radial direction of the rotating shaft 21, and the cross-sectional area of ​​the protrusion 42 gradually decreases.

[0048] When the protrusion 42 is provided on the inner wall of the through hole 41, one end of the protrusion 42, radially adjacent to the inner wall of the through hole 41, is connected to the inner wall of the through hole 41, and the other end of the protrusion 42 protrudes radially toward the center of the through hole 41. The protrusion 42 and the rotating shaft 21 are coaxially arranged. Along the radial direction of the rotating shaft 21 from the inner wall of the through hole 41 toward the center of the through hole 41, the cross-sectional area of ​​the protrusion 42 gradually decreases, and the other end of the protrusion 42, radially adjacent to the center of the through hole 41, forms linear contact with the outer wall of the rotating shaft 21.

[0049] Therefore, when the protrusion 42 is located inside the through hole 41, the gradually decreasing cross-sectional area of ​​the protrusion 42 facilitates the formation of a linear contact between the protrusion 42 and the outer wall of the rotating shaft 21, effectively reducing the contact area between the protrusion 42 and the outer wall of the rotating shaft 21, reducing the possibility of the rotating shaft 21 getting stuck, ensuring the normal operation of the water pump 100, and improving the reliability of the water pump 100.

[0050] According to some embodiments of the present invention, the protrusion 42 is provided on the rotating shaft 21, and the protrusion 42 is oriented radially away from the center of the rotating shaft 21, and the cross-sectional area of ​​the protrusion 42 gradually decreases.

[0051] When the protrusion 42 is provided on the outer wall of the rotating shaft 21, one end of the protrusion 42 adjacent to the outer wall of the rotating shaft 21 in the radial direction is connected to the outer wall of the rotating shaft 21, and the other end of the protrusion 42 protrudes in the radial direction of the rotating shaft 21 toward the direction away from the center of the through hole 41. In the radial direction of the rotating shaft 21 from the outer wall of the rotating shaft 21 toward the direction away from the center of the through hole 41, the cross-sectional area of ​​the protrusion 42 gradually decreases, and the other end of the protrusion 42 in the radial direction of the rotating shaft 21 toward the direction away from the center of the through hole 41 forms a linear contact with the inner wall of the through hole 41.

[0052] Therefore, when the protrusion 42 is provided on the rotating shaft 21, the gradually decreasing cross-sectional area of ​​the protrusion 42 facilitates the formation of linear contact between the protrusion 42 and the inner wall of the through hole 41, effectively reducing the contact area between the protrusion 42 and the inner wall of the through hole 41, reducing the possibility of the rotating shaft 21 jamming, ensuring the normal operation of the water pump 100, and improving the reliability of the water pump 100. At the same time, providing the protrusion 42 on the rotating shaft 21 can reduce the processing difficulty of the protrusion 42 and improve the processing efficiency.

[0053] Optionally, the height of the protrusion 42 along the axial direction of the shaft 21 is less than the height of the through hole 41 along the axial direction of the shaft 21.

[0054] According to some embodiments of this utility model, the protrusion 42 is disposed in the through hole 41, and the surface of the protrusion 42 that contacts the rotating shaft 21 is an arc surface. When the protrusion 42 is disposed on the inner wall of the through hole 41, the surface of the protrusion 42 protruding in the radial direction of the rotating shaft 21 toward the center of the through hole 41 is an arc surface, and the surface of the protrusion 42 that contacts the rotating shaft 21 is an arc surface. The arc surface protrudes in the radial direction of the rotating shaft 21 from the side adjacent to the baffle 40 to the side adjacent to the rotating shaft 21. Since the outer wall of the rotating shaft 21 is curved, a linear contact can be formed between the protrusion 42 and the outer wall of the rotating shaft 21, thereby effectively reducing the contact area between the protrusion 42 and the outer wall of the rotating shaft 21, reducing the possibility of the rotating shaft 21 jamming, ensuring the normal operation of the water pump 100, and improving the reliability of the water pump 100.

[0055] Optionally, the protrusion 42 is provided on the rotating shaft 21, and the surface of the protrusion 42 that contacts the through hole 41 is an arc surface. When the protrusion 42 is provided on the outer wall of the rotating shaft 21, the surface of the protrusion 42 protruding from the outer wall of the rotating shaft 21 in a direction away from the center of the through hole 41 along the radial direction of the rotating shaft 21 is an arc surface. The arc surface protrudes from the side adjacent to the rotating shaft 21 to the side adjacent to the baffle 40 along the radial direction of the rotating shaft 21. Since the inner wall of the through hole 41 is curved, a linear contact can be formed between the protrusion 42 and the inner wall of the through hole 41, thereby effectively reducing the contact area between the protrusion 42 and the inner wall of the through hole 41, reducing the possibility of the rotating shaft 21 jamming, ensuring the normal operation of the water pump 100, and improving the reliability of the water pump 100.

[0056] Optionally, the gap between the protrusion 42 and the outer wall of the rotating shaft 21 or the inner wall of the through hole 41 can be reduced, thereby further reducing impurities entering the gap between the rotating shaft 21 and the baffle 40.

[0057] Optionally, such as Figure 4 As shown, the cross-sectional shape of the protrusion 42 is triangular.

[0058] The protrusion 42 has a triangular cross-sectional shape along the circumference of the rotating shaft 21. When the protrusion 42 is located on the inner wall of the through hole 41, the vertex of the triangle in the radial direction of the rotating shaft 21 toward the center of the through hole 41 contacts the outer wall of the rotating shaft 21. When the protrusion 42 is located on the outer wall of the rotating shaft 21, the vertex of the triangle in the radial direction of the rotating shaft 21 away from the center of the through hole 41 contacts the inner wall of the through hole 41. That is, the cross-sectional profile of the protrusion 42 is triangular, and the triangle includes a first profile line, a second profile line, and a third profile line. The third profile line contacts the inner wall of the through hole 41. One end of the first profile line and the second profile line are respectively connected to the two ends of the third profile line. The other ends of the first profile line and the second profile line are connected to each other. The rotating shaft 21 contacts the protrusion 42 at the connection point of the other ends of the first profile line and the second profile line.

[0059] Therefore, by designing the cross-sectional shape of the protrusion 42 as a triangle, it is easy for the protrusion 42 to form a linear contact with the outer wall of the rotating shaft 21 or the inner wall of the through hole 41, effectively reducing the contact area between the protrusion 42 and the outer wall of the rotating shaft 21 or the inner wall of the through hole 41, reducing the possibility of the rotating shaft 21 getting stuck, ensuring the normal operation of the water pump 100, and improving the reliability of the water pump 100.

[0060] According to some embodiments of this utility model, such as Figure 1 , Figure 5 and Figure 6 As shown, the housing 10 includes a first housing portion 11 and a second housing portion 12, the first housing portion 11 and the second housing portion 12 are connected, a baffle 40 is disposed between the first housing portion 11 and the second housing portion 12, and the baffle 40 is detachably engaged with at least one of the first housing portion 11 and the second housing portion 12.

[0061] In this embodiment, the first housing portion 11 is disposed above the second housing portion 12 along the height direction of the water pump 100 and is detachably connected to the second housing portion 12. Both the first housing portion 11 and the second housing portion 12 have receiving cavities. The first housing portion 11 includes a stator, a rotor 22, and a baffle 40, all disposed within the receiving cavity of the first housing portion 11. The baffle 40 is detachably engaged with either the first housing portion 11 or the second housing portion 12. The impeller 30 is disposed within the receiving cavity of the second housing portion 12. One end of the shaft 21 along the height direction of the water pump 100 engages with the rotor 22 inside the first housing 11. The other end of the shaft 21 passes through the through hole 41 of the baffle 40 and engages with the impeller 30 inside the second housing 12. The receiving cavity of the second housing 12 has an inlet 13 and an outlet 14. The inlet 13 is located on the side wall of the second housing 12 opposite to the shaft 21 along the height direction of the water pump 100, and the outlet 14 is located on the side wall of the second housing 12 opposite to the shaft 21 along the radial direction of the shaft 21. The stator is fixed inside the first housing 11. When the stator is energized, it generates a magnetic field. The rotor 22 rotates within the magnetic field, driving the impeller 30 to rotate via the shaft 21.

[0062] Therefore, by providing the first housing part 11 and the second housing part 12, the assembly efficiency of the water pump 100 can be improved, and the installation of the internal structural components of the water pump 100 can be facilitated. By providing the baffle 40 between the first housing part 11 and the second housing part 12, the entry of liquid from the second housing part 12 into the first housing part 11 can be reduced, thereby improving the safety of the water pump 100. By providing a separable fit between the baffle 40 and at least one of the first housing part 11 and the second housing part 12, the installation and disassembly of the baffle 40 can be facilitated.

[0063] Optionally, the baffle 40 may also be disposed in the receiving cavity of the second housing portion 12 and detachably connected to the second housing portion 12.

[0064] According to some embodiments of the present invention, at least one of the first housing portion 11 and the second housing portion 12 is provided with a mounting groove, and the baffle 40 is disposed in the mounting groove.

[0065] Optionally, the baffle 40 is disposed within the receiving cavity of the first housing portion 11, and the first housing portion 11 has a mounting groove at one end adjacent to the second housing portion 12 along the height direction of the water pump 100. The mounting groove is suitable for mounting the baffle 40. This improves the reliability and stability of the baffle 40 and prevents the baffle 40 from falling off.

[0066] Optionally, when the baffle 40 is disposed in the receiving cavity of the second housing part 12, the second housing part 12 is provided with a mounting groove at one end of the first housing part 11 along the height direction of the water pump 100, thereby fixing the baffle 40 in the second housing part 12.

[0067] In this application, the inlet 13 of the water pump 100 is connected to the water tank, and the outlet 14 of the water pump 100 is connected to the drain pipe. After the water pump 100 is powered on, the stator generates a rotating magnetic field and drives the rotor 22 to rotate. The rotor 22 drives the rotating shaft 21 to rotate. Since the impeller 30 is connected to the rotating shaft 21, the impeller 30 follows the rotating shaft 21 to rotate at high speed, thereby discharging the liquid that enters the receiving cavity from the inlet 13 from the outlet 14.

[0068] The dehumidifier according to a second aspect embodiment of the present invention includes a water pump 100 as described in any of the above embodiments. This ensures the normal operation of the dehumidifier and improves its reliability.

[0069] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0070] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0072] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water pump, characterized in that, include: A housing having a receiving cavity, the receiving cavity having an inlet and an outlet; A rotor assembly is disposed within the receiving cavity. The rotor assembly includes a rotating shaft and a rotor. The rotor is sleeved outside the rotating shaft and drives the rotating shaft to rotate. An impeller connected to a rotating shaft, the rotating shaft driving the impeller to rotate, for discharging liquid that has entered the receiving cavity from the inlet from the outlet; A baffle is disposed between the rotor and the impeller, the rotor passes through the baffle and is connected to the impeller, and the baffle is in linear contact with the rotor axis.

2. The water pump according to claim 1, characterized in that, The baffle has a through hole, the rotating shaft engages with the through hole, and a protrusion is provided on one of the outer wall of the rotating shaft and the inner wall of the through hole. The protrusion extends spirally along the axial direction of the rotating shaft from one end of the rotating shaft adjacent to the rotor to the end away from the rotor, on one of the outer wall of the rotating shaft and the inner wall of the through hole.

3. The water pump according to claim 2, characterized in that, The direction of rotation of the shaft is opposite to the direction of spiral extension of the protrusion.

4. The water pump according to claim 2, characterized in that, The protrusion is located inside the through hole, and the protrusion is radially toward the center of the through hole along the axis of rotation, with the cross-sectional area of ​​the protrusion gradually decreasing.

5. The water pump according to claim 2, characterized in that, The protrusion is provided on the rotating shaft, and the protrusion is oriented radially away from the center of the rotating shaft, and the cross-sectional area of ​​the protrusion gradually decreases.

6. The water pump according to claim 2, characterized in that, The protrusion is located within the through hole, and the surface of the protrusion that contacts the rotating shaft is an arc surface; or, The protrusion is provided on the rotating shaft, and the surface of the protrusion that contacts the through hole is an arc surface.

7. The water pump according to claim 2, characterized in that, The cross-sectional shape of the protrusion is triangular.

8. The water pump according to any one of claims 1-7, characterized in that, The housing includes: First shell section; A second housing portion is connected to the first housing portion and the second housing portion. A baffle is disposed between the first housing portion and the second housing portion, and the baffle is detachably engaged with at least one of the first housing portion and the second housing portion.

9. The water pump according to claim 8, characterized in that, At least one of the first housing portion and the second housing portion is provided with a mounting groove, and the baffle is disposed in the mounting groove.

10. A dehumidifier, characterized in that, Includes the water pump according to any one of claims 1-9.

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