Pumping device and household appliance

Abstract

The application discloses a pumping device and a household appliance, and belongs to the technical field of pumping devices. The pumping device comprises a shell, an impeller, and a flow guide piece. The shell is provided with an inlet and an outlet. The impeller is located in the shell and is arranged in correspondence with the inlet along an axial direction of the impeller. The flow guide piece is located in the shell and comprises a ring-shaped base body and guide vanes arranged on an outer side surface of the base body. The base body is nested on an outer side of the impeller, an axial end of the base body abuts against a part around the inlet of the shell, an outer side of the base body is a flow-through space for medium flow, a side opening is arranged on the base body and communicates a space on an inner side of the base body with the flow-through space, the impeller is arranged in correspondence with the side opening along a radial direction of the impeller, the guide vanes are located in the flow-through space, at least a part of the guide vanes is arranged along an edge of the side opening, and an extension direction of the guide vanes is inclined relative to the axial direction of the base body. The pumping device can reduce energy loss of liquid and improve the efficiency of the pumping device.

Description

Technical Field

[0001] This application belongs to the field of pumping device technology, specifically relating to a pumping device and a household appliance. Background Technology

[0002] In related technologies, the pumping device includes an impeller and guide vanes. The guide vanes are located on one axial side of the impeller. After being thrown out by the impeller, the liquid undergoes a 90° turn around the impeller and then flows axially through the guide vanes located on one axial side of the impeller before finally being discharged from the pumping device. This design is not hydraulically perfect and will result in unnecessary fluid energy loss. Utility Model Content

[0003] This application aims to provide a pumping device and household appliance that can reduce energy loss of liquids and improve the efficiency of the pumping device.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] In a first aspect, this application proposes a pumping device, comprising: a housing having an inlet and an outlet; an impeller located inside the housing, the impeller being disposed axially opposite to the inlet; and a guide member located inside the housing, the guide member having an annular base portion and guide vanes disposed on the outer surface of the base portion, the base portion being nested on the outer side of the impeller, one axial end of the base portion abutting against a portion around the inlet of the housing, the outer side of the base portion being a flow space for medium to flow, a side opening provided on the base portion connecting the space inside the base portion with the flow space, the impeller being disposed radially opposite to the side opening, the guide vanes being located within the flow space, at least a portion of the guide vanes being disposed along the edge of the side opening, and the extension direction of the guide vanes being inclined relative to the axial direction of the base portion.

[0006] In the pumping device of this application embodiment, since one axial end of the base abuts against the inlet area of ​​the housing, and a side opening is provided on the base, with the side opening corresponding to the radial direction of the impeller itself, when the impeller is working, liquid can be drawn in from the inlet and discharged into the flow space from the side opening. Since the guide vane is located in the flow space, at least a portion of the guide vane is provided along the edge of the side opening, and the extension direction of the guide vane is inclined relative to the axial direction of the base, the liquid discharged into the flow space from the side opening can be directly guided by the guide vane. This allows the liquid discharged into the flow space from the side opening to flow directly along the surface of the guide vane at an inclined direction relative to the axial direction of the base. Compared to the related technology where the liquid turns 90° around the impeller before flowing axially through the guide vane, in this solution, since the liquid discharged from the impeller passes radially through the side opening and is directly guided by the guide vane to flow at an inclined direction along the guide vane, and finally discharged from the outlet, the 90° turning flow of the liquid can be reduced. Therefore, the turbulence formed by the liquid turning 90° around the impeller is reduced, thereby greatly reducing the energy loss of the liquid and improving the efficiency of the pumping device.

[0007] According to some technical solutions of this application, optionally, the guide vane and the housing are correspondingly arranged in the axial direction of the base, and the distance between the guide vane and the housing gradually increases along the extension direction of the guide vane, and the side opening is located between the guide vane and the housing.

[0008] In this design, the side opening is located between the guide vane and the housing along the axial direction of the base. This allows the liquid discharged into the flow space from the side opening to directly enter the space between the guide vane and the housing. Furthermore, as the axial distance between the guide vane and the housing gradually increases along the extension direction of the guide vane, the liquid between the guide vane and the housing gradually diffuses and increases in pressure as it flows along the guide vane. This increases the pumping head. The gradually increasing distance between the guide vane and the housing also prevents the liquid exiting the impeller from mixing at high speeds. Instead, it diffuses and slows down through the flow channel between the guide vane and the housing before mixing, further reducing fluid energy loss.

[0009] According to some technical solutions of this application, optionally, the guide vane extends obliquely from one end of the base portion that abuts against the housing to the other end of the axial direction of the base portion, and the side opening extends from the guide vane to the end of the base portion that abuts against the housing, and a portion of the edge of the side opening extends obliquely from one end of the base portion that abuts against the housing to the other end of the axial direction of the base portion and overlaps with the guide vane.

[0010] In this design, both the guide vane and the side opening extend to the end of the base that abuts against the casing. A portion of the edge of the side opening extends obliquely from the end of the base that abuts against the casing to the other axial end of the base and overlaps with the guide vane. This reduces the 90° turning flow of the liquid, thereby reducing turbulence caused by the liquid turning 90° around the impeller, thus reducing energy loss of the liquid and improving the efficiency of the pumping device. At the same time, it allows the liquid between the guide vane and the casing to gradually diffuse as it flows along the guide vane, increasing the head of the pumping device. Furthermore, by extending both the guide vane and the side opening to the end of the base that abuts against the casing, the axial length of the guide component is utilized more fully, reducing the axial length requirement of the guide component and thus facilitating the reduction of the axial length dimension of the guide component, thereby reducing the volume of the pumping device.

[0011] According to some technical solutions of this application, optionally, the angle of inclination of the extension direction of the guide vane relative to the vertical direction of the axial direction of the base portion is in the range of 10° to 30°.

[0012] In this design, the angle of inclination of the guide vane's extension direction relative to the vertical direction of the base portion's axial direction is set to a range of 10° to 30°. By limiting the aforementioned angle to be greater than or equal to 10°, the distance between the guide vane and the housing in the axial direction of the base portion gradually increases, thereby improving the diffusion effect on the liquid and increasing the pumping head. By limiting the aforementioned angle to be less than or equal to 30°, the liquid flow direction can be better guided and straightened, further reducing turbulence, thereby reducing the energy loss of the liquid and improving the efficiency of the pumping device.

[0013] According to some technical solutions of this application, optionally, the guide vane has a body section and an extension section arranged along its own extension direction. Both the body section and the extension section are inclined relative to the axial direction of the base. The body section and the side opening are correspondingly arranged in the axial direction of the base. The body section is distributed along the edge of the side opening. The extension section is arranged at the end of the body section away from the shell. The extension section and the side opening are offset in the axial direction of the base.

[0014] In this design, by setting the main body section along the edge of the side opening, the liquid discharged from the side opening into the flow space is directly guided by the guide vanes to reduce turbulence. The extension section at the end of the main body section further guides the liquid flow, which can further straighten the flow direction of the liquid and further reduce turbulence. Moreover, since the side opening and the extension section are axially offset in the base, the diffusion effect of the liquid can be significantly improved, thereby increasing the head of the pumping device.

[0015] Optionally, according to some technical solutions of this application, the base portion is provided with multiple side openings, the multiple side openings are arranged at intervals along the circumference of the base portion, and multiple guide vanes are provided on the outer side surface of the base portion, and in the circumference of the base portion, a portion of the guide vanes are spaced between adjacent side openings.

[0016] In this design, multiple side openings are provided on the base to improve the efficiency of the impeller discharging liquid into the flow space, thereby improving the discharge efficiency of the pumping device. By arranging multiple side openings at intervals along the circumference of the base, and providing multiple guide vanes on the outer surface of the base, a portion of the guide vanes are spaced between adjacent side openings in the circumferential direction of the base. By using the guide vanes on both sides of the side openings to guide the liquid flow, the mutual flow of liquid between two adjacent side openings can be reduced, thereby reducing turbulence.

[0017] According to some technical solutions of this application, optionally, the end face of the base portion that abuts against the housing is a plane; and / or in the axial direction of the base portion, the end of the base portion that abuts against the housing extends beyond the radial edge of the impeller.

[0018] In this design, the end face of the base part that abuts against the shell is set to be a plane, which can improve the sealing effect between the base part and the shell, reduce liquid leakage from the abutment position between the base part and the shell, and allow most of the liquid to be guided by the guide vanes to reduce the 90° turning flow of the liquid, thereby reducing the turbulence formed by the liquid turning 90° around the impeller.

[0019] The base is positioned axially on the base portion, with one end of the base portion abutting the casing extending beyond the radial edge of the impeller. This ensures that the base portion and the impeller correspond fully in the radial direction of the impeller. On the one hand, this provides more space for impeller installation and reduces the risk of axial collision between the impeller and the casing. On the other hand, it can also increase the discharge volume of the impeller along the side opening and reduce the amount of liquid reflected by the casing from the impeller.

[0020] According to some technical solutions of this application, optionally, the housing includes: a first pump housing with an inlet, a guide member and an impeller located inside the first pump housing, one axial end of the base abutting against the area around the inlet of the first pump housing, and the other axial end of the base abutting against a support cover; a second pump housing with an outlet, the first pump housing and the second pump housing connected, the end of the support cover away from the base abutting against the second pump housing to press the base against the first pump housing, the support cover blocking and sealing the other axial end of the base, and the impeller located between the inlet and the support cover along its own axial direction.

[0021] In this design, the base and the support cover are axially clamped between the first pump housing and the second pump housing. By axially corresponding the base and the support cover, and using the first and second pump housings to clamp the base and the support cover facing each other between the first and second pump housings, the installation of the base and the support cover can be made stable, with a simple structure and convenient assembly.

[0022] According to some technical solutions of this application, optionally, a support boss is provided on the inner side of the base portion, and the end of the support cover away from the second pump housing is nested in the base portion, and the support cover abuts against the support boss to press the base portion against the first pump housing.

[0023] In this design, the end of the support cover furthest from the second pump housing is nested inside the base, and the support cover abuts against the support boss. This makes the axial abutment between the support cover and the base more stable, and the support cover and the base less likely to loosen. Correspondingly, the abutment between the base and the housing is also more stable and reliable, which can better ensure the guiding and diffusion effect of the flow guide on the liquid.

[0024] According to some technical solutions of this application, optionally, the pumping device further includes: a heater located inside the housing, the heater being configured in a cylindrical shape, the heater being nested outside the base portion and spaced apart from the base portion, a flow space being formed between the heater and the base portion, and a guide vane being located between the base portion and the heater.

[0025] In this design, a heater is nested outside the base, forming a flow space between the heater and the base. Guide vanes are located between the base and the heater. This allows the liquid flowing along the flow space to be heated by the heater, integrating heating and pumping functions into a single pumping device. For equipment or systems requiring both liquid pumping and heating, a single pumping device can meet the needs, simplifying the complexity of the equipment or system and reducing its size. Furthermore, by creating a flow space between the heater and the base, the fluid entering the flow space from the side opening is immediately guided and diffused by the guide vanes, extending the contact time between the liquid and the heater and thus improving the heating effect.

[0026] Secondly, embodiments of this application propose a household appliance that includes the pumping device described in any of the above technical solutions.

[0027] The household appliance in this application embodiment has the pumping device in any of the above technical solutions, and therefore also has all the beneficial effects of the aforementioned pumping device.

[0028] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is one of the cross-sectional structural schematic diagrams of the pumping device in a pair of proportions of this application;

[0031] Figure 2 This is the second cross-sectional structural schematic diagram of the pumping device in one of the proportions of this application;

[0032] Figure 3 This is the third cross-sectional structural schematic diagram of the pumping device in one of the proportions of this application;

[0033] Figure 4 This is a schematic diagram of the main structure of the pumping device in a pair of proportions of this application;

[0034] Figure 5 This is a schematic diagram of the left-hand structure of the pumping device in a pair of proportions of this application;

[0035] Figure 6 This is a top view of the pumping device in a pair of proportions of this application;

[0036] Figure 7 This is an exploded structural diagram of the pumping device in a pair of proportions of this application;

[0037] Figure 8 This is one of the three-dimensional structural schematic diagrams of the guide element in a pair of proportions of this application;

[0038] Figure 9 This is the second three-dimensional structural schematic diagram of the guide component in a pair of proportions of this application;

[0039] Figure 10 This is one of the three-dimensional structural schematic diagrams of the support cover in a pair of proportions of this application;

[0040] Figure 11 This is the second of a three-dimensional structural schematic diagrams of the support cover in a pair of proportions of this application;

[0041] Figure 12 This is a structural schematic diagram of a household appliance in a pair of proportions of this application.

[0042] Figure label:

[0043] 1. Household appliance; 10. Pumping device; 100. Housing; 101. Flow space; 110. First pump housing; 111. Inlet; 112. Snap-fit; 120. Second pump housing; 121. Outlet; 122. Slot; 123. Inner side wall; 200. Impeller; 300. Guide component; 310. Base; 311. Side opening; 312. Plane; 313. Support boss; 320. Guide vane; 321. Body section; 322. Extension section; 400. Heater; 500. Support cover; 501. Through hole; 600. Motor; 610. Stator; 620. Rotor; 630. End cover. Detailed Implementation

[0044] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0046] In related technologies, guide vanes are set on one side of the impeller's axial direction. After the liquid is thrown out by the impeller to the vicinity of the impeller, it turns 90° around the impeller and then flows axially through the guide vanes located on one side of the impeller's axial direction before finally being discharged from the pumping device.

[0047] To address one or more problems in related technologies, some embodiments of this application provide a pumping device and a household appliance. The guide member has an annular base and guide vanes disposed on the outer surface of the base. The base is nested outside the impeller. One axial end of the base abuts against the area around the inlet of the housing. The outer side of the base is a flow space for media circulation. A side opening is provided on the base, connecting the inner space of the base with the flow space. The impeller is radially aligned with the side opening. The guide vanes are located within the flow space, with at least a portion of the guide vanes disposed along the edge of the side opening. The extension direction of the guide vanes is inclined relative to the axial direction of the base. Liquid radially ejected by the impeller flows into the flow space through the side opening. Because at least a portion of the guide vanes is disposed along the edge of the side opening, liquid flowing into the flow space from the side opening can directly contact the guide vanes and be directly guided by the inclined guide vanes, thereby reducing the 90° turning flow of the liquid. Therefore, turbulence caused by the liquid turning 90° around the impeller is reduced, which can greatly reduce the energy loss of the liquid and improve the efficiency of the pumping device.

[0048] Please refer to the following. Figures 1 to 12The present application describes a pumping device 10 and a household appliance 1 according to some embodiments.

[0049] The direction of the centerline around which the impeller 200 rotates is defined as the axial direction of the impeller 200. The direction of the centerline of the annular base portion 310 is defined as the axial direction of the base portion 310. Both the axial direction of the impeller 200 and the axial direction of the base portion 310 can be determined by... Figure 1 , Figure 2 and Figure 8 The y-direction is illustrated in the diagram. The perpendicular direction of the axial direction of the base portion 310 can be represented by... Figure 1 The x-direction is illustrated in the diagram.

[0050] The circumferential direction of the base portion 310 is defined as the direction around the axial direction of the base portion 310. The circumferential direction of the base portion 310 can be... Figure 8 and Figure 9 The direction Ac is shown in the diagram.

[0051] The radial direction of the impeller 200 is defined as the direction perpendicular to the axial direction of the impeller 200 and pointing outward from the axial direction of the impeller 200. The radial direction of the base portion 310 is defined as the direction perpendicular to the axial direction of the base portion 310 and pointing outward from the axial direction of the base portion 310. Both the radial direction of the impeller 200 and the radial direction of the base portion 310 can be defined by... Figure 1 and Figure 2 The Ar direction in the diagram is illustrated.

[0052] The side of the base portion 310 that is closer to the axis y along its own radial direction is the inner side of the base portion 310, and the side of the base portion 310 that is farther away from the axis y along its own radial direction is the outer side of the base portion 310.

[0053] The distance between the guide vane 320 and the housing 100 in the axial direction of the base portion 310 can be achieved through... Figure 1 and Figure 2 The 'h' shown is for illustrative purposes.

[0054] The extension direction of guide vane 320 can be understood as the length direction of guide vane 320 itself. The extension direction of guide vane 320 can be determined by... Figure 1 and Figure 8 The 's' direction is shown in the diagram.

[0055] like Figure 1 and Figure 7 As shown, in a first aspect, this application proposes a pumping device 10, including a housing 100, an impeller 200, and a flow guide 300.

[0056] The housing 100 is provided with an inlet 111 and an outlet 121. The inlet 111 is a structure of the housing 100 for drawing in liquid. The outlet 121 is a structure of the housing 100 for discharging liquid.

[0057] Impeller 200 is located inside housing 100. Impeller 200 is arranged axially with inlet 111. Impeller 200 is a component used to drive liquid.

[0058] The flow guide 300 is located inside the housing 100. The flow guide 300 has an annular base portion 310 and a guide vane 320 provided on the outer side of the base portion 310. The base portion 310 is nested on the outside of the impeller 200. One axial end of the base portion 310 abuts against the area around the inlet 111 of the housing 100. The outer side of the base portion 310 is a flow space 101 for medium flow. The base portion 310 is provided with a side opening 311 that connects the space inside the base portion 310 with the flow space 101. The impeller 200 is arranged radially to correspond to the side opening 311. The guide vane 320 is located inside the flow space 101. At least a portion of the guide vane 320 is arranged along the edge of the side opening 311. The extension direction of the guide vane 320 is inclined relative to the axial direction of the base portion 310.

[0059] In this embodiment of the pumping device 10, since one axial end of the base portion 310 abuts against the area around the inlet 111 of the housing 100, and the base portion 310 is provided with a side opening 311 that is radially corresponding to the impeller 200 itself, when the impeller 200 is working, it can draw liquid in from the inlet 111 and discharge liquid from the side opening 311 into the flow space 101. Since the guide vane 320 is located in the flow space 101, at least a portion of the guide vane 320 is provided along the edge of the side opening 311, and the extending direction of the guide vane 320 is inclined relative to the axial direction of the base portion 310, the liquid discharged into the flow space 101 from the side opening 311 can be directly guided by the guide vane. The 320 guide vane directs the liquid into the flow space 101 from the side opening 311 directly along the surface of the guide vane 320 at an axial angle relative to the base portion 310. Compared to the related art structure where the liquid turns 90° around the impeller before flowing axially through the guide vane, in this solution, the liquid discharged from the impeller 200 passes radially through the side opening 311 and is directly guided by the guide vane 320 to flow at an angle along the guide vane 320, and is finally discharged from the outlet 121. This reduces the 90° turning flow of the liquid, thus reducing the turbulence formed by the liquid turning 90° around the impeller 200, thereby greatly reducing the energy loss of the liquid and improving the efficiency of the pumping device 10.

[0060] like Figure 1 As shown, according to some technical solutions of this application, optionally, in the axial direction of the base portion 310, the guide vane 320 is correspondingly provided with the housing 100, and along the extension direction of the guide vane 320, the distance between the guide vane 320 and the housing 100 gradually increases, and the side opening 311 is located between the guide vane 320 and the housing 100.

[0061] In this design, since the side opening 311 is located between the guide vane 320 and the housing 100 along the axial direction of the base portion 310, the liquid discharged from the side opening 311 into the flow space 101 directly enters the space between the guide vane 320 and the housing 100. Furthermore, because the distance between the guide vane 320 and the housing 100 along the axial direction of the base portion 310 gradually increases along the extension direction of the guide vane 320, the liquid between the guide vane 320 and the housing 100 gradually diffuses and increases in pressure as it flows along the guide vane 320. This increases the head of the pumping device 10. Moreover, the gradually increasing distance h between the guide vane 320 and the housing 100 prevents the liquid from mixing at high speeds. Instead, it diffuses and slows down through the flow channel between the guide vane 320 and the housing 100 before mixing, further reducing fluid energy loss.

[0062] like Figure 2 , Figure 8 and Figure 9 As shown, according to some technical solutions of this application, optionally, the guide vane 320 extends obliquely from one end of the base portion 310 that abuts against the housing 100 to the other end of the axial direction of the base portion 310, and the side opening 311 extends from the guide vane 320 to the end of the base portion 310 that abuts against the housing 100, and a portion of the edge of the side opening 311 extends obliquely from one end of the base portion 310 that abuts against the housing 100 to the other end of the axial direction of the base portion 310 and overlaps with the guide vane 320.

[0063] In this design, both the guide vane 320 and the side opening 311 extend to the end of the base portion 310 that abuts against the housing 100. A portion of the edge of the side opening 311 extends obliquely from the end of the base portion 310 that abuts against the housing 100 toward the other axial end of the base portion 310 and overlaps with the guide vane 320. This reduces the 90° turning flow of the liquid, thereby reducing the turbulence formed by the liquid turning 90° around the impeller 200, thus reducing the energy loss of the liquid and improving the efficiency of the pumping device 10. This allows the liquid between the guide vane 320 and the housing 100 to gradually diffuse and increase the head of the pumping device 10 as it flows along the guide vane 320. Furthermore, since both the guide vane 320 and the side opening 311 extend to the end of the base 310 that abuts against the housing 100, the axial length of the guide member 300 is utilized more fully, which reduces the axial length requirement of the guide member 300 and thus helps to reduce the axial length dimension of the guide member 300, thereby reducing the volume of the pumping device 10.

[0064] like Figure 1 As shown, according to some technical solutions of this application, optionally, the inclination angle μ of the extension direction of the guide vane 320 relative to the vertical direction of the axial direction of the base portion 310 is in the range of 10°~30°.

[0065] In this design, the angle of inclination of the guide vane 320 relative to the vertical direction of the base portion 310 is set to a range of 10° to 30°. By limiting the aforementioned angle to be greater than or equal to 10°, the distance between the guide vane 320 and the housing 100 in the axial direction of the base portion 310 gradually increases, thereby improving the diffusion effect on the liquid and increasing the head of the pumping device 10. By limiting the aforementioned angle to be less than or equal to 30°, the flow direction of the liquid can be better guided and straightened, further reducing turbulence, thereby reducing the energy loss of the liquid and improving the efficiency of the pumping device 10.

[0066] It is understandable that the angle μ of the extension direction of the guide vane 320 relative to the vertical direction of the axial direction of the base 310 is further ranged from 15° to 20°.

[0067] like Figure 8 As shown, according to some technical solutions of this application, optionally, the guide vane 320 has a body section 321 and an extension section 322 arranged along its own extension direction. Both the body section 321 and the extension section 322 are inclined relative to the axial direction of the base portion 310. The body section 321 and the side opening 311 are correspondingly arranged in the axial direction of the base portion 310, and the body section 321 is distributed along the edge of the side opening 311. The extension section 322 is arranged at the end of the body section 321 away from the housing 100, and the extension section 322 and the side opening 311 are offset in the axial direction of the base portion 310.

[0068] In this design, the main body section 321 is arranged along the edge of the side opening 311, so that the liquid discharged from the side opening 311 into the flow space 101 is directly guided by the guide vane 320 to reduce turbulence. The extension section 322 at the end of the main body section 321 further guides the liquid, which can further straighten the flow direction of the liquid and further reduce turbulence. Moreover, since the side opening 311 and the extension section 322 are offset in the axial direction of the base 310, the diffusion effect of the liquid can be significantly improved, thereby increasing the head of the pumping device 10.

[0069] like Figure 3 , Figure 8 and Figure 9 As shown, according to some technical solutions of this application, optionally, a plurality of side openings 311 are provided on the base portion 310, the plurality of side openings 311 are arranged at intervals along the circumference of the base portion 310, and a plurality of guide vanes 320 are provided on the outer side surface of the base portion 310, and in the circumference of the base portion 310, a portion of the guide vanes 320 is spaced between adjacent side openings 311.

[0070] In this design, multiple side openings 311 are provided on the base portion 310, which can improve the efficiency of the impeller 200 discharging liquid into the flow space 101, thereby correspondingly improving the discharge efficiency of the pumping device 10. By providing multiple side openings 311 arranged at intervals along the circumference of the base portion 310, and providing multiple guide vanes 320 on the outer surface of the base portion 310, a portion of the guide vanes 320 are spaced between adjacent side openings 311 in the circumferential direction of the base portion 310. While using the guide vanes 320 on both sides of the side opening 311 to guide the liquid, the liquid mutual migration between two adjacent side openings 311 can be reduced, thereby reducing turbulence.

[0071] like Figure 3 and Figure 8 As shown, according to some technical solutions of this application, optionally, the end face of the base portion 310 used to abut against one end of the housing 100 is a plane 312.

[0072] In this design, the end face of the base portion 310 that abuts against the housing 100 is a plane 312, which can improve the sealing effect between the base portion 310 and the housing 100, reduce liquid leakage from the abutment position between the base portion 310 and the housing 100, and allow most of the liquid to be guided by the guide vane 320 to reduce the 90° turning flow of the liquid, thereby reducing the turbulence formed by the liquid turning 90° around the impeller 200.

[0073] like Figure 1 As shown, according to some technical solutions of this application, optionally, in the axial direction of the base portion 310, one end of the base portion 310 that abuts against the housing 100 extends beyond the radial edge of the impeller 200. That is, the end of the base portion 310 that abuts against the housing 100 protrudes a distance m from the radial edge of the impeller 200 along the axial direction y, where m is greater than 0 mm.

[0074] In this design, the base portion 310 is positioned axially, with one end of the base portion 310 abutting against the housing 100 extending beyond the radial edge of the impeller 200. This better ensures that the axial end of the base portion 310 abuts against the area around the inlet 111 of the housing 100. Furthermore, this allows the base portion 310 and the impeller 200 to correspond fully radially. On one hand, this provides more space for the installation of the impeller 200, reducing the risk of axial collision between the impeller 200 and the housing 100. On the other hand, it also increases the discharge volume of the impeller 200 along the side opening 311, reducing the amount of liquid reflected by the housing 100 from the impeller 200.

[0075] like Figure 1 and Figure 2 As shown, according to some technical solutions of this application, optionally, the housing 100 includes a first pump housing 110 and a second pump housing 120.

[0076] The first pump casing 110 is provided with an inlet 111. The guide member 300 and the impeller 200 are both located inside the first pump casing 110. One axial end of the base portion 310 abuts against the area around the inlet 111 of the first pump casing 110, and the other axial end of the base portion 310 abuts against a support cover 500. The second pump casing 120 is provided with an outlet 121. The first pump casing 110 and the second pump casing 120 are connected. The end of the support cover 500 away from the base portion 310 abuts against the second pump casing 120 to press the base portion 310 against the first pump casing 110. The support cover 500 covers and seals the other axial end of the base portion 310. The impeller 200 is located between the inlet 111 and the support cover 500 along its own axial direction.

[0077] In this design, the base portion 310 and the support cover 500 are axially clamped between the first pump housing 110 and the second pump housing 120. Thus, by axially correspondingly installing the base portion 310 and the support cover 500, and by using the first pump housing 110 and the second pump housing 120 to clamp the base portion 310 and the support cover 500 towards each other, the installation of the base portion 310 and the support cover 500 can be made stable, the structure is simple, and the assembly is convenient.

[0078] Optionally, such as Figure 4 and Figure 5 As shown, one of the first pump housing 110 and the second pump housing 120 is provided with a buckle 112 and the other is provided with a slot 122. The first pump housing 110 and the second pump housing 120 are connected and fixed by the buckle 112 and the slot 122 to accommodate the flow guide 300 and the support cover 500, and to clamp the flow guide 300 and the support cover 500 between the first pump housing 110 and the second pump housing 120.

[0079] To give a more detailed example, such as Figures 1 to 6 As shown, the first pump casing 110 is a cylindrical hollow shell 100. One axial end of the first pump casing 110 is provided with an end wall, on which a tubular inlet 111 extends. The impeller 200 is located inside the first pump casing 110 and is arranged axially corresponding to the inlet 111. The other axial end of the first pump casing 110 is an open opening.

[0080] The second pump housing 120 is also roughly cylindrical in shape. An outlet 121 extends tangentially from one side of the second pump housing 120. An inner wall 123 is provided inside the second pump housing 120, forming an axially penetrating channel. One axial end of the inner wall 123 abuts against the support cover 500. An end wall is also connected between the inner wall 123 and the second pump housing 120. This end wall and the support cover 500 allow the space outside the inner wall 123 to communicate with the outlet 121, but not with the channel inside the inner wall 123.

[0081] like Figure 10 and Figure 11 As shown, the support cover 500 is a cylindrical hollow cavity. One axial end of the support cover 500 has an end wall, and a through hole 501 is provided on the end wall of the support cover 500. The other axial end of the support cover 500 is an open opening. The end of the support cover 500 with the opening abuts against the inner sidewall 123 of the second pump housing 120.

[0082] Not explicitly shown above, the pumping device 10 also includes a motor 600, which is connected to the impeller 200 and drives the impeller 200 to rotate. Specifically, the motor 600 has a rotor 620, a stator 610, and an end cover 630. The rotor 620 passes through the inner wall 123 of the second pump housing 120 and the support cover 500, and a bearing is installed in the support cover 500 to connect with the rotor 620. The output end of the rotor 620 extends out of the support cover 500 through the through hole 501 and connects with the impeller 200. The stator 610 is located at the end of the second pump housing 120 away from the first pump housing 110, and the end cover 630 is located on the side of the stator 610 away from the second pump housing 120.

[0083] like Figure 2 As shown, according to some technical solutions of this application, optionally, a support boss 313 is provided on the inner side of the base portion 310, and the end of the support cover 500 away from the second pump housing 120 is nested in the base portion 310, and the support cover 500 abuts against the support boss 313 to press the base portion 310 against the first pump housing 110.

[0084] In this design, the end of the support cover 500 away from the second pump housing 120 is nested inside the base portion 310, and the support cover 500 abuts against the support boss 313. In this way, the axial abutment between the support cover 500 and the base portion 310 is more stable, and the support cover 500 and the base portion 310 are not easy to loosen. Correspondingly, the abutment between the base portion 310 and the housing 100 is also more stable and reliable. This can better ensure the guiding and diffusion effect of the flow guide 300 on the liquid.

[0085] like Figure 1 , Figure 2 and Figure 3 As shown, according to some technical solutions of this application, optionally, the pumping device 10 further includes a heater 400, which is located inside the housing 100. The heater 400 is configured in a cylindrical shape and is nested on the outside of the base portion 310 and spaced apart from the base portion 310. A flow space 101 is formed between the heater 400 and the base portion 310, and a guide vane 320 is located between the base portion 310 and the heater 400.

[0086] In this design, a heater 400 is nested outside the base portion 310, forming a flow space 101 between the heater 400 and the base portion 310. A guide vane 320 is located between the base portion 310 and the heater 400. Thus, the liquid flowing along the flow space 101 can be heated by the heater 400, integrating heating and pumping functions into the pumping device 10. For equipment or systems requiring liquid pumping and heating, a single pumping device 10 can meet the usage requirements, simplifying the complexity of the equipment or system and reducing its size. Furthermore, by forming a flow space 101 between the heater 400 and the base portion 310, the fluid entering the flow space 101 from the side opening 311 is immediately guided and diffused by the guide vane 320. This prolongs the contact time between the liquid and the heater 400, thereby improving the heating effect of the heater 400 on the liquid.

[0087] Optionally, there is a gap between the heater 400 and the guide vane 320 to reduce direct heat transfer between the heater 400 and the guide vane 320, thereby reducing the risk of the guide vane 320 being burned by the heater 400.

[0088] Optionally, one axial end of the heater 400 abuts against the first pump housing 110, and the other axial end of the heater 400 abuts against the second pump housing 120.

[0089] like Figure 12 As shown, in a second aspect, embodiments of this application propose a household appliance 1, which includes the pumping device 10 in any of the above technical solutions.

[0090] The household appliance 1 in this embodiment of the application has the pumping device 10 in any of the above technical solutions, and therefore, the household appliance 1 also has all the beneficial effects of the aforementioned pumping device 10.

[0091] Optionally, the household appliance 1 can be a dishwasher, a faucet heater, a water heater, a water dispenser, etc.

[0092] In this application, the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0093] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. 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.

[0094] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pumping device, characterized in that, include: A housing, wherein the housing is provided with an inlet and an outlet; An impeller is located inside the housing, and the impeller is arranged along its own axial direction corresponding to the inlet; A flow guide is located within the housing. The flow guide has an annular base and guide vanes disposed on the outer surface of the base. The base is nested outside the impeller. One axial end of the base abuts against the portion around the inlet of the housing. The outer side of the base is a flow space for medium to flow. The base has a side opening that connects the space inside the base with the flow space. The impeller is disposed radially corresponding to the side opening. The guide vanes are located within the flow space. At least a portion of the guide vanes is disposed along the edge of the side opening. The extension direction of the guide vanes is inclined relative to the axial direction of the base.

2. The pumping device according to claim 1, characterized in that, Along the axial direction of the base portion, the guide vane is correspondingly disposed to the housing, and along the extending direction of the guide vane, the distance between the guide vane and the housing gradually increases, and the side opening is located between the guide vane and the housing.

3. The pumping device according to claim 2, characterized in that, The guide vane extends obliquely from one end of the base portion that abuts against the housing to the other end of the axial direction of the base portion. The side opening extends from the guide vane to the end of the base portion that abuts against the housing. A portion of the edge of the side opening extends obliquely from one end of the base portion that abuts against the housing to the other end of the axial direction of the base portion and overlaps with the guide vane.

4. The pumping device according to any one of claims 1 to 3, characterized in that, The angle of inclination of the extension direction of the guide vane relative to the perpendicular direction of the axial direction of the base portion ranges from 10° to 30°.

5. The pumping device according to any one of claims 1 to 3, characterized in that, The guide vane has a body section and an extension section arranged along its own extension direction. Both the body section and the extension section are inclined relative to the axial direction of the base portion. The body section and the side opening are correspondingly arranged in the axial direction of the base portion, and the body section is distributed along the edge of the side opening. The extension section is arranged at the end of the body section away from the housing, and the extension section and the side opening are offset in the axial direction of the base portion.

6. The pumping device according to any one of claims 1 to 3, characterized in that, The base portion is provided with a plurality of side openings, which are arranged at intervals along the circumference of the base portion. A plurality of guide vanes are provided on the outer surface of the base portion, and a portion of the guide vanes are spaced between adjacent side openings in the circumferential direction of the base portion.

7. The pumping device according to any one of claims 1 to 3, characterized in that, The end face of the base portion that abuts against one end of the housing is a plane; and / or In the axial direction of the base portion, one end of the base portion is used to abut against the housing, extending beyond the radial edge of the impeller.

8. The pumping device according to any one of claims 1 to 3, characterized in that, The housing includes: The first pump casing is provided with the inlet. The guide and the impeller are both located inside the first pump casing. One axial end of the base part abuts against the part around the inlet of the first pump casing, and the other axial end of the base part abuts against a support cover. The second pump casing is provided with the outlet. The first pump casing is connected to the second pump casing. The end of the support cover away from the base part abuts against the second pump casing to press the base part against the first pump casing. The support cover blocks and seals the other axial end of the base part. The impeller is located axially between the inlet and the support cover.

9. The pumping device according to claim 8, characterized in that, A support boss is provided on the inner side of the base portion. The end of the support cover away from the second pump housing is nested in the base portion, and the support cover abuts against the support boss to press the base portion against the first pump housing.

10. The pumping apparatus according to any one of claims 1 to 3, characterized in that, Also includes: A heater is located inside the housing. The heater is cylindrical in shape and is nested outside the base portion and spaced apart from the base portion. The flow space is formed between the heater and the base portion. The guide vane is located between the base portion and the heater.

11. A household appliance, characterized in that, Includes the pumping device as described in any one of claims 1 to 10.

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