Water pump for a dishwasher and dishwasher having the same

Abstract

This invention discloses a water pump for a dishwasher and a dishwasher having the same. The water pump for the dishwasher includes: a plastic-encapsulated motor, which includes a plastic-encapsulated housing, a stator core, stator windings, and a rotor. The stator core and stator windings are plastic-encapsulated within the wall of the plastic-encapsulated housing. A mounting cavity is formed within the plastic-encapsulated housing, and the rotor is rotatably disposed within the mounting cavity. A groove extending axially is provided on the outer end face of the plastic-encapsulated housing; a pump body, which is mounted on the plastic-encapsulated housing and is drively connected to the rotor shaft of the rotor; and a cooling fan, a portion of which fits within the groove and another portion protrudes from the outer end face of the plastic-encapsulated housing. The cooling fan is connected to the rotor shaft to rotate together with the rotor shaft. The water pump for the dishwasher according to the embodiments of this invention has advantages such as ease of use and good heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of electrical appliance manufacturing technology, and more specifically, to a water pump for a dishwasher and a dishwasher having the water pump for the dishwasher. Background Technology

[0002] In related technologies, dishwashers use encapsulated motors in their water pumps to improve the pump's quietness and moisture resistance. However, encapsulated motors rely solely on the encapsulated housing to conduct heat to the outside. Since the water pump needs to be installed inside the sealed chassis of the dishwasher during use, the heat dissipation of the encapsulated motor is poor, affecting the dishwasher's performance and user experience. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a water pump for a dishwasher, which has the advantages of being easy to use and having good heat dissipation.

[0004] The present invention also proposes a dishwasher having the aforementioned water pump for a dishwasher.

[0005] To achieve the above objectives, according to an embodiment of the first aspect of the present invention, a water pump for a dishwasher is provided, the water pump for a dishwasher comprising: a plastic-encapsulated motor, the plastic-encapsulated motor comprising a plastic-encapsulated housing, a stator core, a stator winding, and a rotor, the stator core and the stator winding being plastic-encapsulated within the wall of the plastic-encapsulated housing, a mounting cavity being formed within the plastic-encapsulated housing, the rotor being rotatably disposed within the mounting cavity, and a groove extending axially on the outer end face of the plastic-encapsulated housing; a pump body, the pump body being mounted on the plastic-encapsulated housing and being drively connected to the rotor shaft of the rotor; and a cooling fan, a portion of the cooling fan fitting within the groove and another portion protruding from the outer end face of the plastic-encapsulated housing, the cooling fan being connected to the rotor shaft to rotate together with the rotor shaft.

[0006] The water pump for a dishwasher according to an embodiment of the present invention has advantages such as ease of use and good heat dissipation.

[0007] In addition, the water pump for a dishwasher according to the above embodiments of the present invention may also have the following additional technical features:

[0008] According to one embodiment of the present invention, the encapsulated housing has a first end face and a second end face, a first shaft hole is provided on the first end face, a second shaft hole is provided on the second end face, one end of the rotor shaft passes through the first shaft hole and is connected to the pump body for transmission, and the other end passes through the second shaft hole and is connected to the heat dissipation fan blade, and the groove is formed on the second end face.

[0009] According to one embodiment of the present invention, the plastic-encapsulated housing is provided with heat dissipation holes communicating with the groove and the mounting cavity.

[0010] According to one embodiment of the present invention, the encapsulated motor further includes two bearings, which are installed inside the encapsulated housing, and the two bearings pass through both ends of the rotor shaft, respectively.

[0011] According to one embodiment of the present invention, in the axial direction of the encapsulated housing, both bearings are located inside the outer end of the stator winding.

[0012] According to one embodiment of the present invention, the bearing is integrally formed with the encapsulated housing by injection molding.

[0013] According to one embodiment of the present invention, the second end face is provided with an upper windshield protrusion and a lower windshield protrusion that surround the groove and are spaced apart in the vertical direction.

[0014] According to one embodiment of the present invention, in the axial direction of the plastic-encapsulated housing, the outer end of the heat dissipation fan blade is flush with or located inside the upper and lower windshield protrusions.

[0015] According to one embodiment of the present invention, the two ends of the upper windshield protrusion are in the same horizontal plane and the two ends of the lower windshield protrusion are in the same horizontal plane.

[0016] According to one embodiment of the present invention, the heat dissipation fan blade includes: a central shaft connected to the rotor shaft; and a plurality of blades, the plurality of blades being circumferentially spaced along the central shaft, each blade extending axially along the central shaft.

[0017] According to one embodiment of the present invention, the water pump for the dishwasher further includes an air guide ring, which is connected to a plurality of the blades and spaced apart from the central shaft.

[0018] According to one embodiment of the present invention, the air guide ring extends obliquely from the inside to the outside in the radial direction away from the plastic-encapsulated housing on the central axis.

[0019] According to one embodiment of the present invention, each blade is provided with a clearance notch, which is located at the junction of the inner end face of the blade in the radial direction and the inner end face in the axial direction.

[0020] According to one embodiment of the present invention, the heat dissipation fan blade is a plastic part.

[0021] According to an embodiment of a second aspect of the present invention, a dishwasher is provided, the dishwasher including a water pump for a dishwasher as described in an embodiment of a first aspect of the present invention.

[0022] The dishwasher according to embodiments of the present invention, by utilizing the water pump for dishwashers described in the first aspect of the present invention, has advantages such as ease of use and good heat dissipation.

[0023] Additional aspects and advantages of the 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

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the structure of a water pump for a dishwasher according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the structure of a water pump for a dishwasher according to an embodiment of the present invention.

[0027] Figure 3 This is a cross-sectional view of a water pump for a dishwasher according to an embodiment of the present invention.

[0028] Figure 4 This is a partial structural schematic diagram of a water pump for a dishwasher according to an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the air guide ring and heat dissipation fan blades of a water pump for a dishwasher according to an embodiment of the present invention.

[0030] Reference numerals: water pump 1, encapsulated motor 100, encapsulated housing 110, mounting cavity 111, groove 112, first end face 113, second end face 114, first shaft hole 115, second shaft hole 116, heat dissipation hole 117, stator core 120, stator winding 130, outer end 131, rotor 140, rotor shaft 141, bearing 150, upper windshield boss 161, lower windshield boss 162, pump body 200, heat dissipation fan blade 300, central shaft 310, blade 320, clearance notch 321, air guide ring 400, dishwasher inner cavity 2. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] A water pump 1 for a dishwasher according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0033] like Figures 1-5 As shown, the water pump 1 for a dishwasher according to an embodiment of the present invention includes a sealed motor 100, a pump body 200, and a cooling fan 300.

[0034] The encapsulated motor 100 includes an encapsulated housing 110, a stator core 120, a stator winding 130, and a rotor 140. The stator core 120 and stator winding 130 are encapsulated within the wall of the encapsulated housing 110. A mounting cavity 111 is formed within the encapsulated housing 110, and the rotor 140 is rotatably disposed within the mounting cavity 111. A groove 112 extending axially is provided on the outer end face of the encapsulated housing 110. The pump body 200 is mounted on the encapsulated housing 110 and is drively connected to the rotor shaft 141 of the rotor 140. A portion of the cooling fan 300 fits within the groove 112, and another portion protrudes from the outer end face of the encapsulated housing 110. The cooling fan 300 is connected to the rotor shaft 141 to rotate together with the rotor shaft 141.

[0035] It is important to understand here that "stator core 120 and stator winding 130 are encapsulated within the wall of encapsulated housing 110" means that stator core 120 and stator winding 130 are encapsulated between the inner and outer surfaces of encapsulated housing 110.

[0036] According to an embodiment of the present invention, the water pump 1 for a dishwasher, by providing a plastic-encapsulated motor 100 in the water pump 1, not only facilitates the reduction of noise generated by the plastic-encapsulated motor 100 during operation and improves the quietness of the plastic-encapsulated motor 100, thus enhancing user comfort, but also facilitates the improvement of the moisture-proof performance of the plastic-encapsulated motor 100, reduces the installation requirements of the plastic-encapsulated motor 100, and allows the plastic-encapsulated motor 100 to be installed in harsher environments, thereby improving the working performance and application range of the water pump 1.

[0037] Furthermore, by setting up a cooling fan 300, which rotates together with the rotor shaft 141, the rotation of the cooling fan 300 generates airflow, which carries away the heat inside the encapsulated motor 100, thus facilitating heat dissipation. Compared with water pumps in related technologies, this method improves the heat dissipation performance of the encapsulated motor 100, preventing overheating or even damage, improving its reliability and stability, and thus enhancing the performance of the water pump 1. It also allows the water pump 1 to be installed in environments with harsh heat dissipation conditions, reducing installation requirements, improving its performance, and enhancing its applicability.

[0038] Furthermore, by fitting a portion of the cooling fan 300 within the groove 112 and having another portion protrude from the outer end face of the encapsulated housing 110, the cooling fan 300 can not only generate airflow within the mounting cavity 111 to remove heat generated by the encapsulated motor 100, thus facilitating heat dissipation inside the encapsulated motor 100, but also generate a large-scale circulating airflow in the external environment of the water pump 1, facilitating heat dissipation in the external environment of the water pump 1, for example, when the water pump 1 is located in the enclosed inner cavity 2 of the dishwasher and the cooling fan... The blade 300 is positioned adjacent to the side wall of the inner cavity 2. This not only allows the cooling blade 300 to generate turbulent airflow within the inner cavity 2, facilitating the removal of heat from the encapsulated motor 100 and improving its heat dissipation efficiency, but also facilitates faster heat exchange between the airflow within the inner cavity 2 and the external environment, further reducing the temperature of the encapsulated motor 100 and ensuring its temperature remains within a reasonable range. This improves the performance of the encapsulated motor 100 and enhances the reliability and stability of the water pump 1.

[0039] Therefore, the water pump 1 for a dishwasher according to the present invention has advantages such as ease of use and good heat dissipation.

[0040] A water pump 1 for a dishwasher according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0041] In some specific embodiments of the present invention, such as Figures 1-5 As shown, the water pump 1 for a dishwasher according to an embodiment of the present invention includes a sealed motor 100, a pump body 200, and a cooling fan 300.

[0042] Specifically, such as Figure 3 As shown, the plastic-encapsulated housing 110 has a first end face 113 and a second end face 114. The first end face 113 has a first shaft hole 115, and the second end face 114 has a second shaft hole 116. One end of the rotor shaft 141 passes through the first shaft hole 115 and is connected to the pump body 200 for transmission, while the other end passes through the second shaft hole 116 and is connected to the cooling fan 300. A groove 112 is formed on the second end face 114. This facilitates the arrangement of the pump body 200 and the cooling fan 300, makes the internal structure layout of the water pump 1 more reasonable, improves the space utilization rate inside the water pump 1, and further expands the application range of the water pump 1.

[0043] Optionally, such as Figure 3 As shown, the encapsulated housing 110 has heat dissipation holes 117 that connect the groove 112 and the mounting cavity 111. This facilitates airflow between the mounting cavity 111 and the groove 112, further facilitating heat dissipation from the mounting cavity 111 and improving the heat dissipation effect of the encapsulated motor 100.

[0044] Specifically, such as Figure 3 As shown, the encapsulated motor 100 also includes two bearings 150, which are installed inside the encapsulated housing 110. Both ends of the rotor shaft 141 pass through the two bearings 150 respectively. This facilitates the smooth rotation of the rotor 140 relative to the mounting cavity 111, improves the accuracy and reliability of the rotor 140's rotation, and further enhances the operational reliability of the encapsulated motor 100.

[0045] More specifically, such as Figure 3 As shown, in the axial direction of the encapsulated housing 110, both bearings 150 are located inside the outer end 131 of the stator winding 130. This not only facilitates the bearings 150 to avoid interference with the cooling fan 300 during rotation, but also facilitates the control of the size of the stator winding 130 and its configuration, further making the structure of the encapsulated motor 100 more rational.

[0046] Optionally, the bearing 150 is integrally molded with the encapsulated housing 110 by injection molding. This not only facilitates the improvement of the structural strength and rigidity of the bearing 150 and the reliability of its installation, but also simplifies the assembly process of the encapsulated motor 100 and improves the production efficiency of the water pump 1.

[0047] Specifically, such as Figure 4 As shown, the second end face 114 is provided with an upper windshield protrusion 161 and a lower windshield protrusion 162 that surround the groove 112 and are spaced apart in the vertical direction (as shown in the vertical direction). Figure 1 (As shown by arrow A in the image). This facilitates the formation of notches on the left and right sides of the upper windshield protrusion 161 and the lower windshield protrusion 162 (left and right directions as shown in the image). Figure 1 As shown by arrow C in the diagram, the upper windshield protrusion 161 and the lower windshield protrusion 162 facilitate the guidance of airflow, allowing the airflow to flow in the horizontal direction.

[0048] More specifically, in the axial direction of the plastic-encapsulated housing 110, the outer end of the heat dissipation fan 300 is flush with or located inside the upper and lower windshield protrusions 161 and 162. This facilitates the enhancement of the airflow guiding effect of the upper and lower windshield protrusions 161 and 162, and further facilitates the airflow from the left and right sides of the upper and lower windshield protrusions 161 and 162.

[0049] Optionally, such as Figure 4As shown, both ends of the upper windshield protrusion 161 are in the same horizontal plane, and both ends of the lower windshield protrusion 162 are in the same horizontal plane. This facilitates the horizontal flow of air, making it suitable for the water pump 1 to be installed in the horizontally arranged inner cavity 2, which facilitates the generation of a large range of circulating airflow within the inner cavity 2, thereby utilizing the sidewalls of the inner cavity 2 to dissipate heat from the flowing airflow.

[0050] Specifically, such as Figure 5 As shown, the cooling fan 300 includes a central shaft 310 and multiple blades 320, with the central shaft 310 connected to the rotor shaft 141. The multiple blades 320 are spaced circumferentially along the central shaft 310, and each blade 320 extends axially along the central shaft 310. This facilitates the arrangement of the cooling fan 300 and allows it to rotate together with the rotor shaft 141 to generate airflow.

[0051] More specifically, such as Figure 5 As shown, the water pump 1 for the dishwasher also includes an air guide ring 400, which is connected to multiple blades 320 and spaced apart from the central shaft 310. This not only guides the airflow using the air guide ring 400, facilitating a diffused airflow, but also allows the two ends of the heat dissipation fan blades 300 to communicate with the mounting cavity 111 and the external environment of the water pump 1, respectively. This facilitates smooth airflow between the mounting cavity 111 and the external environment of the water pump 1, further improving the heat dissipation efficiency of the encapsulated motor 100.

[0052] Furthermore, the air guide ring 400 extends obliquely from the inside to the outside in the radial direction away from the plastic-encapsulated housing 110 along the central axis 310. This further facilitates the diffused flow of air and enhances the guiding effect of the air guide ring 400 on the airflow.

[0053] Optionally, such as Figure 5 As shown, each blade 320 is provided with a clearance notch 321, which is located at the connection between the inner end face of the blade 320 in the radial direction and the inner end face in the axial direction. This facilitates the setting of the heat dissipation fan 300, avoids interference between the heat dissipation fan 300 and the encapsulated motor 100 during rotation, and facilitates the smooth and flexible rotation of the heat dissipation fan 300.

[0054] Specifically, the heat dissipation fan blade 300 is made of plastic. This facilitates the processing and manufacturing of the heat dissipation fan blade 300, reduces its production cost, and improves its production efficiency.

[0055] A dishwasher according to an embodiment of the present invention is described below. The dishwasher according to an embodiment of the present invention includes a water pump 1 for a dishwasher according to the above embodiment of the present invention.

[0056] The dishwasher according to the embodiments of the present invention has advantages such as ease of use and good heat dissipation by utilizing the water pump 1 for dishwasher according to the above embodiments of the present invention.

[0057] Other configurations and operations of the dishwasher according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0058] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, "above" or "below" a second feature may include direct contact between the first and second features, or it may include contact between the first and second features not being in direct contact but through another feature between them.

[0059] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0060] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; 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 invention based on the specific circumstances.

[0061] 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., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Although embodiments of the 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 invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water pump for a dishwasher, characterized in that, include: A plastic-encapsulated motor includes a plastic-encapsulated housing, a stator core, a stator winding, and a rotor. The stator core and the stator winding are plastic-encapsulated within the wall of the plastic-encapsulated housing. An installation cavity is formed within the plastic-encapsulated housing, and the rotor is rotatably disposed within the installation cavity. A groove extending axially is provided on the outer end face of the plastic-encapsulated housing. A pump body, which is mounted on the encapsulated housing and is drive-connected to the rotor shaft of the rotor; A heat dissipation fan blade, a portion of which fits into the groove and another portion protrudes from the outer end face of the plastic-encapsulated housing, the heat dissipation fan blade being connected to the rotor shaft to rotate together with the rotor shaft; The plastic encapsulation housing has a first end face and a second end face. The groove is formed on the second end face. The second end face is provided with an upper windshield protrusion and a lower windshield protrusion that surround the groove and are spaced apart in the vertical direction. The upper windshield protrusion and the lower windshield protrusion protrude outward from the second end face of the plastic encapsulation housing. In the axial direction of the plastic-encapsulated housing, the outer end of the heat dissipation fan blade is flush with or located inside the upper and lower windshield protrusions. Both ends of the upper windshield protrusion are in the same horizontal plane and both ends of the lower windshield protrusion are in the same horizontal plane. The heat dissipation fan blades include: Central axis; Multiple blades; It also includes an air guide ring, which is connected to multiple blades and spaced apart from the central shaft; the encapsulated motor also includes two bearings, which are installed inside the encapsulated housing, and the two bearings pass through both ends of the rotor shaft. In the axial direction of the encapsulated housing, both bearings are located inside the outer end of the stator winding.

2. The water pump for a dishwasher according to claim 1, characterized in that, The first end face is provided with a first shaft hole, and the second end face is provided with a second shaft hole. One end of the rotor shaft passes through the first shaft hole and is connected to the pump body for transmission, and the other end passes through the second shaft hole and is connected to the heat dissipation fan.

3. The water pump for a dishwasher according to claim 1, characterized in that, The plastic-encapsulated housing has heat dissipation holes that connect the groove and the mounting cavity.

4. The water pump for a dishwasher according to claim 1, characterized in that, The bearing is integrally formed with the plastic-encapsulated housing by injection molding.

5. The water pump for a dishwasher according to claim 1, characterized in that, The central shaft is connected to the rotor shaft; The plurality of blades are arranged circumferentially along the central axis, and each blade extends axially along the central axis.

6. The water pump for a dishwasher according to claim 5, characterized in that, The air guide ring extends radially from the inside out toward the direction away from the plastic-encapsulated housing along the central axis.

7. The water pump for a dishwasher according to claim 5, characterized in that, Each blade is provided with a clearance notch, which is located at the junction of the inner end face of the blade in the radial direction and the inner end face in the axial direction.

8. The water pump for a dishwasher according to claim 1, characterized in that, The cooling fan blades are made of plastic.

9. A dishwasher, characterized in that, Includes a water pump for a dishwasher as described in any one of claims 1-8.

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