CN114233640B

CN114233640B - High-efficient radiating double fluid passage water pump

Info

Publication number: CN114233640B
Application number: CN202111204517.9A
Authority: CN
Inventors: 林荣; 颜成刚
Original assignee: Leo Group Zhejiang Pump Co Ltd
Current assignee: Leo Group Zhejiang Pump Co Ltd
Priority date: 2020-12-25
Filing date: 2021-10-15
Publication date: 2023-03-10
Anticipated expiration: 2041-10-15
Also published as: CN112576519A; CN114233639A; CN114233640A; CN114278576A; CN114233639B; WO2023060848A1; WO2023060842A1; CN114278576B; WO2023060843A1

Abstract

The invention discloses a double-flow-passage water pump capable of efficiently dissipating heat, which comprises a water pump outer barrel, a stator assembly, a rotor assembly and a diversion shell, wherein the stator assembly comprises a stator and a rotor assembly; the stator assembly is arranged in the water pump outer barrel in a closed mode, the rotor assembly is rotationally arranged in the stator assembly, the water pump outer barrel and the outer wall of the stator assembly enclose to form a first space, and the outer wall of the rotor assembly and the inner wall of the stator assembly enclose to form a second space; an impeller connected with the rotor assembly is arranged in the guide shell, an installation cavity matched with the impeller is arranged in the guide shell, a plurality of vortex grooves are formed in the peripheral wall of the installation cavity, and a water permeable hole matched with the rotor assembly is formed in the guide shell; a water inlet end of the water pump, the vortex groove, the first space and a water outlet end of the water pump form a first flow channel; the water inlet end of the water pump, the water permeable hole, the second space and the water outlet end of the water pump form a second flow channel; a stator support is arranged on the outer side of the stator assembly, and a plurality of cooling grooves are formed in the stator support; two ends of the stator bracket are respectively provided with a flow blocking ring.

Description

High-efficient radiating double fluid passage water pump

Technical Field

The application relates to the technical field of shield pumps, in particular to a high-efficiency radiating double-flow-channel water pump.

Background

The pump body of the canned motor pump is connected with the motor, and the rotor of the motor and the impeller of the pump body are fixed on the same rotating shaft. Although there is the cooling runner that realizes the shield pump motor cooling among the prior art, the cooling runner nevertheless sets up in the motor outside, and the cooling effect is not good, and the coolant liquid of shield pump sets up alone with the fluid that needs the pumping moreover, is unfavorable for the water pump integration, has increased the water pump cost.

For example, in chinese patent document, patent No. CN2016214699800 discloses a utility model issued in 2017, 8/8, the application discloses a water pump with an inner flow channel, which includes a pump body and a motor, the left end of the motor is fixed with an end cap, the end cap is fixedly connected with the pump body, a cavity is formed between the pump body and the inside of the end cap, a flow channel for water to flow is provided on the inner side wall of the cavity, and the flow channel is communicated with the cavity. The disadvantages are that: the runner sets up on the pump body and end cover, can only accomplish the cooling of motor front end, and the holistic cooling efficiency of motor is poor.

Disclosure of Invention

Based on the defects in the prior art, the invention provides the efficient heat dissipation double-flow-channel water pump which can provide a first flow channel corresponding to the motor stator and a second flow channel corresponding to the space between the motor stator and the motor rotor, so that the integrated heat dissipation of the motor is realized through the first flow channel and the second flow channel, and a cooling flow channel is not required to be arranged outside the motor; support stator module through stator support, when improving stability, form the vortex through stator support, improve cooling efficiency.

In order to achieve the above object, the present invention adopts the following technical solutions.

A high-efficiency heat-dissipation double-channel water pump is characterized by comprising a water pump outer cylinder, a stator assembly, a rotor assembly and a diversion shell;

the stator assembly is arranged in the water pump outer cylinder in a sealing mode, the rotor assembly is arranged in the stator assembly in a rotating mode, the water pump outer cylinder and the outer wall of the stator assembly enclose to form a first space, and the outer wall of the rotor assembly and the inner wall of the stator assembly enclose to form a second space;

an impeller connected with the rotor assembly is arranged in the guide shell, an installation cavity matched with the impeller is arranged in the guide shell, a plurality of vortex grooves are arranged on the peripheral wall of the installation cavity, the vortex grooves are communicated with two axial ends of the guide shell, and a flow blocking surface matched with the vortex grooves is arranged on the rear side of the guide shell, which is back to the installation cavity;

a water permeable hole matched with the rotor assembly is arranged in the diversion shell and is communicated with the front end and the rear end of the diversion shell;

a water inlet end of the water pump, the vortex groove, the first space and a water outlet end of the water pump form a first flow channel;

the water inlet end of the water pump, the water permeable hole, the second space and the water outlet end of the water pump form a second flow channel;

the outer side of the stator assembly is provided with a stator support, the inner side of the stator support is attached to the outer wall of the stator assembly, and the stator support is provided with a plurality of cooling grooves; two ends of the stator support are respectively provided with a flow blocking ring, and one side of the flow blocking ring, which faces the outer end of the stator support, is provided with a plurality of sections of flow blocking grooves.

The first flow channel can introduce water inflow of the water pump into the first space from the vortex groove to finish heat dissipation outside the stator, the second flow channel can introduce water in the water pump into the second space through the water permeable holes to finish heat dissipation between the stator and the rotor, the heat dissipation efficiency is high, the arrangement of the first flow channel and the second flow channel can meet the requirement of conveying fluid, and can also ensure cooling of the stator assembly, the rotor assembly and the bearing, the cooling mode that cooling liquid needs to be independently arranged to cool in the prior art is improved, and normal pumping of the fluid can also be ensured, so that the water pump has the characteristics of simple structure, convenience in use and good economic benefit; the diversion shell is arranged to complete diversion of the water body, the water permeable holes and the vortex groove respectively correspond to the second flow channel and the first flow channel, sufficient cooling of the water body of the two groups of flow channels is guaranteed, and cooling efficiency is guaranteed; support stator module through stator support, when improving stability, form the vortex through stator support, improve cooling efficiency.

Preferably, the water pump further comprises a rear end cover, and a fixed seat matched with the rotating shaft is arranged in the outer cylinder of the water pump; a plurality of connecting rods are arranged between the fixing seat and the rear end cover, a flow blocking ring of the stator support is provided with a limiting hole matched with the connecting rods, and a limiting cylindrical surface matched with the connecting rods is arranged between the cooling grooves of the stator support.

Preferably, the stator assembly comprises a stator outer cylinder, a stator inner cylinder, a stator winding and a closed end piece;

the stator inner barrel and the stator outer barrel are concentrically arranged to enclose to form an accommodating space for accommodating the stator winding;

the closed end piece is respectively connected with the stator outer cylinder and the stator inner cylinder so as to close the accommodating space;

and the inner wall and two ends of the stator inner cylinder are respectively provided with insulating paper.

The stator winding is installed, sealed and fixed through the stator outer cylinder and the stator inner cylinder, the insulativity of the stator assembly is guaranteed, and the reliability of the arrangement of the cooling flow channel in the motor is guaranteed.

Preferably, the rotor assembly comprises a rotating shaft and a rotor on the rotating shaft, and an insulating layer is arranged on the outer side of the rotor;

the fixing seat is connected with the rotating shaft through a bearing, a water passing groove is formed in the inner peripheral side of the bearing, and a water diversion groove is formed in the end face of the bearing.

The water passing groove completes radial water passing and serves as a channel to further ensure the water passing capacity of the second flow channel, so that the cooling performance of the second flow channel is ensured, the heat dissipation of the bearing position can be completed, and the heat dissipation capacity of the motor is improved; the bearing rotates with the pivot together, and the setting of distributive channel can make things convenient for the water diffusion, can follow the water channel fast dispersion to the second space or with the water in the second space extract the water channel fast when the bearing rotates, can form the negative pressure moreover, is favorable to the water flow heat dissipation in the second runner.

Preferably, the water passing groove is linear and parallel to the axis of the bearing.

Preferably, the water passing groove has a linear shape, the cross-sectional shape of the water passing groove is semicircular, the axis of the water passing groove is located on the tangential plane of the inner peripheral side of the bearing, the axis of the water passing groove and the axis of the bearing are obliquely arranged, and the intersection point of the axis of the water passing groove and the inner peripheral side of the bearing is located at the middle position in the axial direction of the bearing.

Preferably, the rear side of the guide shell is provided with a flow blocking surface matched with the vortex groove;

a plurality of guide plates are arranged on the peripheral wall of the mounting cavity;

the guide plates are arranged in a circumferential array around the axis of the installation cavity;

one end of the guide plate, facing the side of the installation cavity, is provided with a guide surface which is eccentrically arranged with the installation cavity; the other end of the guide plate, back to one side of the installation cavity, is provided with a downstream surface; a vortex groove is formed between the flow guide surface and the downstream surface on the adjacent flow guide plate;

the flow guide surface is tangent to the peripheral wall of the installation cavity.

A vortex groove is formed between the guide plates, the structural shape of the vortex groove is stable, flow gathering is realized through the guide surfaces, the downstream surface accelerates the outflow of the water body, when the impeller rotates, the water body is ejected from the vortex groove along the tangential direction of the guide shell, the impact on the outer cylinder of the water pump is small, and the sealing property and the service life of the outer cylinder of the water pump can be ensured; the water flowing out of the vortex groove can strike the flow blocking surface and then flow, vortex is formed at the position of the flow blocking surface, and the heat dissipation effect is improved.

Preferably, one end of the downstream surface, which is far away from the bottom surface of the installation cavity, is provided with a water retaining strip, the outer end of the bottom of the vortex groove is provided with a flow guide inclined surface which is inclined towards the bottom surface of the installation cavity, and the water retaining strip is provided with a matching inclined surface which is matched with the flow guide inclined surface.

Because the setting on water conservancy diversion inclined plane and cooperation inclined plane, the slope direction passageway to the installation cavity outside has been formed, when the water flows along water conservancy diversion shell tangential direction from the vortex groove, because setting up of slope direction passageway makes the water can form the slope on the tangent plane of water conservancy diversion shell when penetrating, realize the slope collision of water and fender stream face, change the vortex that forms the convolution, thereby be favorable to the water distribution to flow to first space, avoid appearing laminar cooling gradient, improve the cooling efficiency that first space corresponds the stator.

Preferably, the impeller comprises a front wheel cover and a rear wheel body, the rear wheel body is provided with a plurality of vortex plates arranged around the axis of the rear wheel body in a circumferential array mode, the front wheel cover is attached and fixed to the outer ends of the vortex plates, the axis of the front wheel cover is provided with a water inlet hole, and the axis of the rear wheel body is provided with a mounting hole connected with the rotating shaft.

The water inlet hole is used for water inlet, the front wheel cover and the rear wheel body are hermetically matched with the vortex plate to form flow guide water outlet from the axial direction to the circumferential direction, one-way driving of water flow is achieved, the impeller can guide a part of water into the flow guide shell after water is guided, and the flow guide shell is convenient to distribute and guide the water.

Preferably, the rear end cover comprises a rear disc body and a rear end body which are connected with each other; the rear end body is of a cylindrical tubular structure, and a transition space with a U-shaped cross section is arranged in the rear disc body; one side of the middle part of the transition space is communicated with the second space, and the edge of the transition space is communicated with the first space; the transition space is communicated with the rear end body; a pressure sensor is arranged in the transition space; the rear end body is internally provided with a flow sensor.

The smoothness of the first flow channel and the second flow channel is measured by matching the pressure sensor with the flow sensor, so that the motor in the water pump can be cooled by enough water, and the cooling efficiency is improved; and the real-time overhaul is convenient.

The invention has the following beneficial effects: the first flow channel corresponding to the motor stator and the second flow channel corresponding to the space between the motor stator and the motor rotor can be provided, the integrated heat dissipation of the motor is realized through the first flow channel and the second flow channel, a cooling flow channel does not need to be arranged outside the motor, and the cooling efficiency is high; the diversion shell is arranged to complete diversion of the water body, the water permeable holes and the vortex grooves respectively correspond to the first flow channels and the second flow channels, sufficient cooling of the water body of the two sets of flow channels is guaranteed, and cooling efficiency is guaranteed.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a side view schematically illustrating the construction of the guide shell according to the present invention.

Fig. 4 is a front structural view of the guide shell of the present invention.

Fig. 5 is a schematic structural view of a stator frame in the present invention.

Fig. 6 is a schematic structural view of a first embodiment of the bearing of the present invention.

Fig. 7 is a schematic view of the structure of the impeller of the present invention.

Fig. 8 is a schematic structural view of a second embodiment of the bearing of the present invention.

Fig. 9 is a front view of the bearing shown in fig. 8.

In the figure: a stator assembly 2 rotor assembly 3 guide shell 4 front end cover 5 front shell 6 rear end cover 7 rear shell 8 front disk body 9 front end body 10 inlet 11 extending port 12 rotating shaft 13 rotor 14 rotor sleeve 15 fixing base 16 bearing 17 water diversion groove 18 through water tank 19 stator outer barrel 20 stator inner barrel 21 stator winding 22 sealing end piece 23 limiting hole 26 stator support 27 cooling groove 28 flow blocking ring 29 flow blocking groove 30 connecting rod 31 limiting cylindrical surface 32 first space 33 rear disk body 34 rear end body 35 second space 36 pressure sensor 37 flow sensor 38 impeller 40 rear wheel body 42 vortex plate 43 water inlet hole 44 mounting hole 45 mounting cavity 46 vortex 47 guide plate 48 guide surface 49 downstream surface 50 water diversion strip 51 water diversion inclined surface 52 matching inclined surface 53 flow blocking surface 54 water diversion surface 54 trough 55 water diversion hole 56 control box 57 bottom shell 58 aluminum piece 59 pressure plate 60 controller 61 power cord 62.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are only used to distinguish one description from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

In the case of the example 1, the following examples are given,

as shown in fig. 1 to 7, the double-flow-passage water pump with high heat dissipation efficiency is characterized by comprising a water pump outer cylinder 1, a stator assembly 2, a rotor assembly 3 and a guide shell 4.

The water pump outer cylinder 1 is in a cylindrical shape with two smooth ends, and further comprises a front end cover 5, a front shell 6, a rear end cover 7 and a rear shell 8; along the axis direction of the water pump outer cylinder 1, the front end cover 5 and the front shell 6 are respectively fixed on the inner wall and the outer wall of one end of the water pump outer cylinder 1, and the rear end cover 7 and the rear shell 8 are respectively fixed on the inner wall and the outer wall of the other end of the water pump outer cylinder. The front end cover 5, the front shell 6, the rear end cover 7 and the rear shell 8 are all circular ring disk-shaped structures. The front end cover 5 includes a front disk body 9 and a front end body 10 connected to each other. The front end body 10 is a cylindrical barrel structure with a hollow passage forming the inlet 11 of the water pump. The front plate 9 has a trumpet-shaped open cavity that extends through the entire front plate 9. The lumen has a small end with a smaller cross-section and a large end with a larger cross-section. The opening of the small end part is communicated with the hollow channel of the front end cover 5. The large end part and the end surface of the guide shell 4 enclose to form a mounting cavity 46. The front cover 5 further includes a cylindrical extension port 12, and the extension port 12 is located between the front body 10 and the front disk 9. The diameter of the extension 12 is smaller than the diameter of the inlet opening 44, and the extension 12 extends into the inlet opening 44 to form an internal orifice structure. The inner orifice ring structure has the effects of reducing the caliber, improving the lift and preventing backflow. It is understood that in other embodiments of the present invention, the diameter of the extension 12 may be larger than the diameter of the water inlet hole 44, and the water inlet hole 44 may extend into the extension 12 to form an external orifice ring structure. Such an outer orifice structure has an effect of increasing the flow rate. This is merely an example and is not intended to be limiting.

At one end of the water pump outer cylinder 1 close to an inlet 11 of the water pump, the peripheral wall of the front end cover 5 is sleeved on the inner wall of the water pump outer cylinder 1, and the front end cover 5 and the inner wall of the water pump outer cylinder 1 are sealed through a sealing element. And the inner wall of the front shell 6 is sleeved on the outer wall of the water pump outer cylinder 1. The front end cover 5 and the front outer shell 6 jointly seal the end part of the water pump outer cylinder 1 close to the water pump inlet 11. The front housing 6 is detachably connected to the front cover 5 via a fixing cover. At one end of the water pump outer barrel 1 close to the water pump outlet, the peripheral wall of the rear end cover 7 is sleeved on the inner wall of the water pump outer barrel 1, and the rear end cover 7 and the inner wall of the water pump outer barrel 1 are sealed through a sealing element. And the inner wall of the rear shell 8 is sleeved on the outer wall of the water pump outer cylinder 1. The rear end cover 7 and the rear shell 8 jointly seal the end part of the water pump outer cylinder 1 close to the outlet of the water pump. The end part of the water pump outer cylinder 1 close to the water pump outlet is also provided with a bending part extending in the radial direction. The bent portion is embedded in a narrow space formed by the rear end cover 7 and the rear housing 8. In the narrow space, another sealing element is arranged between one side of the bending part, which is close to the outlet of the water pump, and the rear shell 8. The front housing 6 is sleeved on the front body 10 of the front cover 5, and the disk surface of the front housing 6 is pressed against the front disk body 9 of the front cover 5. The outer annular surface of the fixed cover is clamped on the inner annular surface of the front shell 6. The inner wall of the fixed cover is provided with internal threads, and the outer wall of the front end body 10 is provided with external threads. The inner wall of the fixed cover is in threaded connection with the outer wall of the front end body 10, so that the front shell 6 is firmly connected with the front end cover 5.

Preferably, the front end cover 5 and the rear end cover 7 are integrally formed by cast steel. The arrangement mode has the advantages of being good in structural strength and assembly reliability, and the problems of installation errors and leakage caused by the matching of multiple parts are solved better.

The rotor assembly 3 comprises a rotating shaft 13 and a rotor 14 on the rotating shaft 13, the rotating shaft 13 is provided with a rotor sleeve 15, the rotor 14 is fixed on the rotor sleeve 15, and the outer side of the rotor 14 is provided with an insulating layer; the length of the rotor sleeve 15 is greater than that of the rotor 14, and therefore, the second space 36 includes a space between the rotating shaft 13 and the stator inner cylinder 21, and a space between the rotor 14 and the stator inner cylinder 21. One end of the water pump outer barrel 1 close to the impeller 40 is provided with a fixed seat 16 arranged at the outer end of the stator assembly 2; the fixed seat 16 is connected with the rotating shaft 13 through a bearing 17, and the bearing 17 is also arranged between the rotating shaft 13 and the rear end cover 7. The fixed seat 16 is of an annular structure, one end of the fixed seat 16 is abutted against the front end cover 5 through the diversion shell 4, and the other end of the fixed seat 16 is connected with the rear end cover 7 through the connecting rod 31; the overall structural stability of the water pump is further enhanced by the connection of the fixing seat 16 and the rear end cover 7 through the connecting rod 31. A water passing groove 19 is provided on the inner peripheral side of the bearing 17, and a water diversion groove 18 is provided on the end face of the bearing 17. The bearing 17 is a graphite bearing 17 made of graphite. The graphite bearing 17 is a bushing structure, and the graphite bearing 17 is matched with the rotating shaft 13 through a sliding bearing 17. The water passing groove 19 is arranged parallel to the axis of the bearing 17, and the water diversion groove 18 is arranged in the radial direction of the end face of the bearing 17. The water passing groove 19 is linear, and the cross section of the water passing groove 19 is semicircular.

The stator assembly 2 comprises a stator outer cylinder 20, a stator inner cylinder 21, a stator winding 22 and a closed end piece 23; the stator inner barrel 21 and the stator outer barrel 20 are concentrically arranged to form an accommodating space for accommodating the stator winding 22; the closed end piece 23 is connected with the stator outer cylinder 20 and the stator inner cylinder 21 respectively to close the accommodating space; the inner wall and two ends of the stator inner cylinder 21 are respectively provided with insulating paper.

Hermetic end piece 23 includes a first end piece and a second end piece. The first end piece is arranged on one side of the stator outer cylinder 20 and the stator inner cylinder 21 close to the water pump inlet 11 to seal the first end of the accommodating space; the second end piece is arranged on one side of the stator outer cylinder 20 and the stator inner cylinder 21 close to the water pump outlet so as to seal the second end of the accommodating space. The arrangement mode not only ensures the airtightness of the stator winding 22 in the stator assembly 2, but also is convenient for the assembly and maintenance of the stator assembly 2. The first end piece is of an annular disc-shaped structure. An annular first protrusion is disposed on an end surface of the first end piece close to the stator outer cylinder 20, and the first protrusion extends in a direction away from the shield pump inlet 11. The first projection and the outer edge of the first end piece form a first step, on which the stator outer cylinder 20 is snapped. The first protrusion and the inner edge of the first end piece form a second step, and the stator inner cylinder 21 is clamped on the second step. The second end member is also of annular disc-like configuration. The outer edge of the second end piece abuts against the end face of the stator outer cylinder 20. The inner edge of the second end piece is provided with a third step, and the stator inner cylinder 21 is clamped on the third step. The outer side of the stator assembly 2 is provided with a stator support 27, the inner side of the stator support 27 is attached to the outer wall of the stator assembly 2, and the stator support 27 is provided with a plurality of cooling grooves 28; two ends of the stator bracket 27 are respectively provided with a flow blocking ring 29, and one side of the flow blocking ring 29 facing the outer end of the stator bracket 27 is provided with a plurality of sections of flow blocking grooves 30. Four connecting rods 31 are arranged between the fixed seat 16 and the rear end cover 7, a flow blocking ring 29 of the stator support 27 is provided with a limiting hole 26 matched with the connecting rod 31, and the cross section of the limiting hole 26 is semicircular. The stator frame 27 is provided with a limiting cylindrical surface 32 between the cooling slots 28 that fits the connecting rod 31. The cooling channels 28 are disposed between the restraining cylindrical surfaces 32. Four sections of cooling grooves 28 are arranged between the two limiting cylindrical surfaces 32, and the shape of each cooling groove 28 is an arc rectangle, so that the area of direct contact between the stator assembly 2 and water flow is enlarged.

The stator assembly 2 is hermetically arranged in the water pump outer cylinder 1, the rotor assembly 3 is rotationally arranged in the stator assembly 2, the outer walls of the water pump outer cylinder 1 and the stator assembly 2 enclose to form a first space 33, and the rear end cover 7 comprises a rear disc body 34 and a rear end body 35 which are connected with each other; the rear end body 35 is a cylindrical tubular structure, and a transition space with a U-shaped section is arranged in the rear disc body 34; one side of the middle part of the transition space is communicated with the second space 36, and the edge of the transition space is communicated with the first space 33; the transition space is communicated with the rear end body 35; a pressure sensor 37 is arranged in the transition space; a flow sensor 38 is provided in the rear body 35. The outer wall of the rotor assembly 3 and the inner wall of the stator assembly 2 enclose a second space 36; the shaft 13 is provided with a thrust piece 39 engaging the rotor sleeve 15, the thrust piece 39 being located in the second space 36.

An impeller 40 connected with the rotor assembly 3 is arranged in the guide shell 4, the impeller 40 comprises a front wheel cover 41 and a rear wheel body 42, five vortex plates 43 arranged around the axis of the rear wheel body 42 in a circumferential array are arranged on the rear wheel body 42, the front wheel cover 41 is attached and fixed to the outer ends of the vortex plates 43, a water inlet hole 44 is formed in the axis of the front wheel cover 41, and a mounting hole 45 connected with the rotating shaft 13 is formed in the axis of the rear wheel body 42. The guide shell 4 is internally provided with a mounting cavity 46 matched with the impeller 40, and the front end cover 5 and the guide shell 4 enclose the mounting cavity 46. Four vortex grooves 47 are arranged on the peripheral wall of the guide shell 4 corresponding to the installation cavity 46, and the vortex grooves 47 are communicated with the front end and the rear end of the guide shell 4; specifically, four air deflectors 48 are arranged on the peripheral wall of the mounting cavity 46; four baffles 48 are arranged in a circumferential array around the axis of the mounting cavity 46; one end of the guide plate 48 facing the installation cavity 46 is provided with a guide surface 49 eccentrically arranged with the installation cavity 46; the other end of the guide plate 48, which is back to the side of the installation cavity 46, is provided with a downstream surface 50; a vortex groove 47 is formed between the guide surface 49 and the downstream surface 50 on the adjacent guide plate 48; four swirl grooves 47 are provided; the deflector surface 49 is arranged tangentially to the peripheral wall of the mounting chamber 46. One end of the downstream surface 50, which is far away from the bottom surface of the mounting cavity 46, is provided with a water bar 51, the outer end of the bottom of the vortex groove 47 is provided with a flow guide inclined surface 52 which is inclined towards the bottom surface of the mounting cavity 46, and the water bar 51 is provided with a matching inclined surface 53 which is matched with the flow guide inclined surface 52. The rear side of the guide shell 4 is provided with a flow blocking surface 54 matched with the vortex groove 47; twelve blocks which are arranged in a circular array around the axis of the guide shell 4 are arranged on the flow blocking surface 54; a return groove 55 is formed between adjacent baffle surfaces 54; the outlet ends of the spiral grooves 47 correspond to the four return grooves 55.

A water permeable hole 56 matched with the rotor assembly 3 is arranged in the guide shell 4, and the water permeable hole 56 is communicated with the front end and the rear end of the guide shell 4; the water inlet end of the water pump, the vortex groove 47, the first space 33 and the water outlet end of the water pump form a first flow channel; the water inlet end of the pump, the water permeable holes 56, the second space 36 and the water outlet end of the pump form a second flow path.

The water pump also comprises a control device arranged at the bottom of the water pump outer barrel 1. The control device includes a cylindrical control box 57, a plate-like bottom case 58, and an aluminum member 59, a pressure plate 60, a controller 61, and a power supply line 62. One side of the control box 57 close to the water pump outer barrel 1 is respectively clamped with the front end cover 5 and the rear end cover 7, and one side of the control box 57 far away from the water pump outer barrel 1 is respectively in threaded connection with the front end cover 5 and the rear end cover 7 through bolts. The control box 57 and the bottom case 58 enclose a closed box-shaped space. The aluminum piece 59 is clamped in the control box 57, and the aluminum piece 59 is connected with the water pump outer barrel 1 in a propping manner. The aluminum member 59 has a good conductive effect, so that the grounding effect of the water pump is guaranteed. The aluminum member 59 also has an extension member adjacent the bottom case 58 on which a controller 61 is provided via a pressure plate 60. The controller 61 is adhered to the pressing plate 60 by epoxy glue, and the whole of the two is fixed to the aluminum member 59.

Compared with the mode that the controller 61 is directly fixed on the aluminum piece 59 in the prior art, the controller 61 is more convenient to replace due to the arrangement, the controller 61 is attached to the outer face of the water pump outer barrel 1 through the pressing plate 60 and the aluminum piece 59, heat can be directly taken away through water flow, and the heat dissipation effect is achieved. Both the flow sensor 38 and the pressure sensor 37 are connected to the controller 61. One end of the power cord 62 is connected to the controller 61, and the other end of the power cord 62 extends in a direction away from the control box 57.

Optionally, the controller 61 here uses a low frequency hertz signal. Compared with the Bluetooth connection in the prior art, the method has the characteristics of good wall penetration and high sensitivity.

In the case of the example 2, the following examples are given,

a double-channel water pump with high heat dissipation efficiency, as shown in fig. 8 and 9, embodiment 2 is different from embodiment 1 in that: the water passing groove 19 is linear, the cross section of the water passing groove 19 is semicircular, the axis of the water passing groove 19 is positioned on the section of the inner peripheral side of the bearing 17, the axis of the water passing groove and the axis of the bearing are obliquely arranged, and the intersection point of the axis of the water passing groove and the inner peripheral side of the bearing is positioned in the middle of the axial direction of the bearing. The water diversion trench 18 is located in the radial direction of the end face of the bearing 17, chamfers are respectively arranged at two ends of the bearing 17, and the water diversion trench 18 is arranged in a zigzag shape along the end face and the chamfers of the bearing 17.

In use, the stator assembly 2 is energised and the stator windings 22 are generating a varying magnetic field to rotate the rotor 14. Because the rotor 14 is fixedly connected with the rotating shaft 13, when the rotor 14 rotates, the impeller 40 on the rotating shaft 13 rotates simultaneously. Specifically, after the water pump is started, the rotating shaft 13 drives the impeller 40 and the water to rotate at a high speed, and the water is thrown to the outer edge of the impeller 40 in a centrifugal motion, so that the water flow starts to move. A part of water flows into the first space 33 through the vortex groove 47 of the volute flow guide shell 4 and is pumped to an outlet on the rear end cover 7 from the transition space, so that a first flow channel is formed; the other part of the water flow enters the second space 36 from the water permeable holes 56 through the water passing groove 19 of the front end bearing 17, then enters the transition space from the second space 36 through the water passing groove 19 of the rear end bearing 17, and then is pumped to the outlet on the rear end cover 7 through the transition space, so that a second flow channel is formed. The arrangement of the first flow passage and the second flow passage can meet the requirement of conveying fluid, the stator assembly 2, the rotor assembly 3 and the bearing 17 can be cooled by the pumped fluid, and the cooling effect is excellent.

Claims

1. A high-efficiency heat-dissipation double-channel water pump is characterized by comprising a water pump outer cylinder, a stator assembly, a rotor assembly and a diversion shell;

the outer side of the stator assembly is provided with a stator support, the inner side of the stator support is attached to the outer wall of the stator assembly, and the stator support is provided with a plurality of cooling grooves; two ends of the stator support are respectively provided with a flow blocking ring, and one side of the flow blocking ring, which faces the outer end of the stator support, is provided with a plurality of sections of flow blocking grooves;

a plurality of flow guide plates are arranged on the peripheral wall of the mounting cavity;

one end of the guide plate, facing the side of the installation cavity, is provided with a guide surface which is eccentrically arranged with the installation cavity; a downstream surface is arranged on one side of the other end of the guide plate, which is back to the mounting cavity; a vortex groove is formed between the flow guide surface and the downstream surface on the adjacent flow guide plate;

the flow guide surface is tangent to the peripheral wall of the installation cavity;

one end of the downstream surface, which is far away from the bottom surface of the installation cavity, is provided with a water retaining strip, the outer end of the bottom of the vortex groove is provided with a flow guide inclined surface which is inclined towards the bottom surface of the installation cavity, and the water retaining strip is provided with a matching inclined surface which is matched with the flow guide inclined surface.

2. The double-flow-channel water pump with efficient heat dissipation as recited in claim 1, wherein the water pump further comprises a rear end cover, and a fixed seat matched with the rotating shaft is arranged in an outer cylinder of the water pump; a plurality of connecting rods are arranged between the fixing seat and the rear end cover, a flow blocking ring of the stator support is provided with a limiting hole matched with the connecting rods, and a limiting cylindrical surface matched with the connecting rods is arranged between the cooling grooves of the stator support.

3. The double-channel water pump capable of efficiently dissipating heat according to claim 1, wherein the stator assembly comprises a stator outer cylinder, a stator inner cylinder, a stator winding and a closed end piece;

4. The double-flow water pump with the efficient heat dissipation function as claimed in claim 2, wherein the rotor assembly comprises a rotating shaft and a rotor on the rotating shaft, and an insulating layer is arranged on the outer side of the rotor;

5. The double-channel water pump for efficiently dissipating heat as claimed in claim 4, wherein the water passing groove is linear and parallel to the axis of the bearing.

6. The double-channel water pump for efficiently dissipating heat as claimed in claim 4, wherein the water passing groove has a linear shape, the cross-sectional shape of the water passing groove is semicircular, the axis of the water passing groove is located on a tangential plane of the inner circumferential side of the bearing, the axis of the water passing groove and the axis of the bearing are obliquely arranged, and the intersection point of the axis of the water passing groove and the inner circumferential side of the bearing is located at a middle position in the axial direction of the bearing.

7. The double-runner water pump with efficient heat dissipation as recited in claim 1, wherein the impeller comprises a front wheel cover and a rear wheel body, the rear wheel body is provided with a plurality of vortex plates circumferentially arrayed around an axis of the rear wheel body, the front wheel cover is attached and fixed to outer ends of the vortex plates, an inlet hole is formed in the axis of the front wheel cover, and a mounting hole connected with the rotating shaft is formed in the axis of the rear wheel body.

8. The double-flow water pump with efficient heat dissipation according to claim 2, wherein the rear end cover comprises a rear disc body and a rear end body which are connected with each other; the rear end body is of a cylindrical tubular structure, and a transition space with a U-shaped cross section is arranged in the rear disc body; one side of the middle part of the transition space is communicated with the second space, and the edge of the transition space is communicated with the first space; the transition space is communicated with the rear end body; a pressure sensor is arranged in the transition space; the rear end body is internally provided with a flow sensor.