Electric control silicone oil water pump with impeller assembly

Abstract

The electric control silicone oil water pump is used in an automobile, the impeller assembly comprises an impeller lining and a plastic wrapping part, the plastic wrapping part is connected with the impeller lining in an injection wrapping mode, the plastic wrapping part comprises a plurality of impeller blades and a plurality of fluid outflow channels, and the cross section of each impeller blade is a snakelike line. According to the impeller assembly, the serpentine line design is adopted for the impeller blades, so that the impeller assembly can keep high efficiency under various working conditions, and particularly, the efficiency is improved more remarkably under the high rotating speed.

Description

Technical Field

[0001] The utility model relates to a water pump device, in particular to a high-efficiency electrically controlled silicone oil water pump with an impeller assembly. Background Art

[0002] With the continuous application and promotion of electronically controlled engines, customers are paying more and more attention to the power consumption of the engine fuel system. In order to maximize fuel consumption and extend the service life of engine cooling system components, the promotion and application of electronically controlled silicone oil water pump technology has greatly met the above requirements of customers. The main function of the electronically controlled silicone oil water pump is to provide water flow power in the water pump system to achieve effective circulation of the coolant.

[0003] In the existing electronically controlled silicone oil water pumps, the centrifugal pump impeller blades mostly adopt an involute design. This design can effectively convert the kinetic energy of the fluid, but it limits the pressure increase and efficiency of the water pump to a certain extent. It may not be possible to effectively maintain the stability of the fluid during high-speed operation, resulting in energy loss and reduced efficiency. In addition, the existing technology fails to effectively separate the high and low pressure areas, affecting the stability and efficiency of the water pump. In addition, the pressure difference is adjusted by adjusting the end face clearance, and the clearance is a very sensitive data that will affect the flow rate and there is also the risk of mechanical scratches.

[0004] Therefore, there is still room for improvement in the impeller blades of the water pump in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a high-efficiency electrically controlled silicone oil water pump with an impeller assembly, which has a reliable structure and consistent product quality, so as to solve the existing technical problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An electrically controlled silicone oil water pump with an impeller assembly is used in the interior of an automobile. The impeller assembly includes an impeller bushing and a plastic package. The plastic package is injection-molded and connected to the impeller bushing. The plastic package includes a plurality of impeller blades and a plurality of fluid outflow channels. The cross section of the impeller blade is a serpentine line.

[0008] The electrically controlled silicone oil water pump with an impeller assembly described in the preferred embodiment of the present application has a pressure angle of 45 degrees for the impeller blade, a pitch circle concentric with the impeller assembly, an outer diameter size of the center hole of the plastic-wrapped component equals the diameter size of the arc circle, the center of the arc circle is at the intersection of the pitch circle and the pressure angle, the serpentine line includes a straight line segment and an arc line segment, the arc line segment is an arc line extending from the intersection of the arc circle and the pitch circle toward the inside of the pitch circle; the straight line segment is a line connecting the intersection point and the end point of the pressure angle; the intersection point of the straight line segment and the arc line segment is an arc transition.

[0009] In the electronically controlled silicone oil water pump with an impeller assembly described in a preferred embodiment of the present application, the number of impeller blades is eight.

[0010] In the electronically controlled silicone oil water pump with an impeller assembly described in a preferred embodiment of the present application, the diameter of the pitch circle is equal to the diameter of the outer circle divided by 1.618.

[0011] The electrically controlled silicone oil water pump with an impeller assembly described in a preferred embodiment of the present application further comprises pressure isolating ribs protruding from the plastic covering member.

[0012] The electrically controlled silicone oil water pump with an impeller assembly described in a preferred embodiment of the present application further comprises a plurality of overpressure holes.

[0013] The electronically controlled silicone oil water pump with an impeller assembly described in the preferred embodiment of the present application also includes a valve plate assembly, the valve plate assembly includes a valve plate, a butterfly spring and an iron derivative, the valve plate is arranged on the butterfly spring, and the butterfly spring is arranged on the iron derivative; wherein, the valve plate includes an inlet valve plate, an outlet valve plate and a valve plate body, the inlet valve plate and the outlet valve plate are arranged on the valve plate body; the inlet valve plate includes an annular arc bending portion and an inlet valve plate portion, the annular arc bending portion is an arc-shaped plate body, and the annular arc bending portion is used to increase To increase the rigidity of the inlet valve plate, the arc of the annular arc bend is concentric with the central through hole of the butterfly spring piece, one side of the annular arc bend is connected to the inlet valve plate portion, and the other side of the annular arc bend is connected to the valve plate body; the outlet valve plate includes a connecting portion, an outlet valve plate portion and a concave punching point, one side of the connecting portion is connected to the outlet valve plate portion, and the other side of the connecting portion is connected to the valve plate body, the concave punching point is arranged on the connecting portion and the outlet valve plate portion, and the concave punching point is used to increase the rigidity of the outlet valve plate.

[0014] The electronically controlled silicone oil water pump with an impeller assembly described in the preferred embodiment of the present application also includes a speed sensor including an active Hall, a PCB circuit board, three pins and a plastic overmolded component. The active Hall is welded and connected to the PCB circuit board, the three pins are welded and connected to the PCB circuit board, the plastic overmolded component is plastic-coated and connected to the active Hall, PCB circuit board and three pins. The speed sensor is arranged on the pump casing base of the electronically controlled silicone oil water pump, one end of the three pins is outside the pump casing base, and one end of the active Hall is inside the pump casing base.

[0015] The electrically controlled silicone oil water pump with an impeller assembly described in the preferred embodiment of the present application also includes a coil assembly, the coil assembly includes a coil, a winding skeleton and two winding pins, the coil winding is connected to the winding skeleton, the winding skeleton shooting package is connected to the two winding pins, the winding skeleton includes an upper ring part, a winding shaft and a lower ring part, the upper ring part and the lower ring part are annular hollow sheets, the winding shaft is an annular hollow cylinder, the surface of the winding shaft includes a plurality of straight grooves and a smooth surface located between the ends of the plurality of straight grooves, the width of the straight grooves is 0.5% larger than the wire diameter of the coil, and the inclination angle of the wire on the smooth surface is greater than 0 degree and less than or equal to 30 degrees or greater than 180 degrees and less than or equal to 210 degrees.

[0016] The electronically controlled silicone oil water pump with an impeller assembly described in the preferred embodiment of the present application further comprises a pump casing base, one side of the pump casing base is connected to the impeller assembly, and the other side of the pump casing base comprises an axially protruding pump casing base shaft cylinder for installing a shaft-connected bearing and a first large rib, a second large rib, a third large rib, a fifth large rib, a sixth large rib and a seventh large rib extending from the outer wall of the pump casing base shaft cylinder to the circumference of the pump casing base for support, wherein the first large rib is a vertical protruding rib located below the pump casing base shaft cylinder; the second large rib and the third large rib are protruding ribs located on the left side of the pump casing base shaft cylinder, and the angle between the second large rib and the third large rib is parallel to the bending angle of the belt; the fifth large rib and the seventh large rib are protruding ribs located on the right side of the pump casing base shaft cylinder, and the angle between the fifth large rib and the seventh large rib forms a symmetrical angle with the main motion angle of the belt; the sixth large rib is a protruding rib located in the middle of the angle between the fifth large rib and the seventh large rib.

[0017] The design concept of this application is to design an impeller blade for use in an electronically controlled silicone oil water pump, whose main function is to provide efficient water flow power in the water pump system and realize effective circulation of the coolant; by adopting a serpentine line design, the impeller blade is intended to improve the working efficiency of the water pump, reduce energy consumption, and significantly reduce noise. At the same time, through the pressure isolation rib design at the bottom of the impeller, the high and low pressure areas are effectively separated to optimize the overall performance of the water pump; the fluid dynamics efficiency of the water pump is improved, energy consumption is reduced, the cooling efficiency of the cooling system is enhanced at idle state, the buffering performance of speed changes is improved, and the impact on the bearings is reduced.

[0018] Due to the adoption of the above technical solution, the utility model has the following advantages and effects:

[0019] First, efficiency improvement: The serpentine design enables the impeller assembly to maintain high efficiency under various working conditions, especially at high speeds, the efficiency improvement is more significant;

[0020] Second, noise reduction: The innovative impeller blade design effectively reduces fluid resonance and reduces the noise during the operation of the pump;

[0021] Third, performance optimization: The design of the pressure-isolating ribs helps to optimize the separation of high-pressure and low-pressure areas of the water pump, thereby improving the overall performance and stability of the water pump.

[0022] Of course, implementing any specific embodiment of the present application does not necessarily have all of the above technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the electronically controlled silicone oil water pump for this application;

[0024] Figure 2 This is a schematic diagram of the explosion of the electronically controlled silicone oil water pump for this application;

[0025] Figure 3 This is a cross-sectional schematic diagram of the electronically controlled silicone oil water pump of this application;

[0026] Figure 4 This is a schematic diagram of the valve plate assembly for this application;

[0027] Figure 5 This is an exploded schematic diagram of the valve plate assembly of this application;

[0028] Figure 6 This is a schematic diagram of the valve plate for this application;

[0029] Figure 7 This is a schematic diagram of the butterfly shrapnel of this application;

[0030] Figure 8 This is a schematic diagram of the iron derivative for this application;

[0031] Fig. 9 This is a schematic diagram of the appearance of the impeller assembly of this application;

[0032] Fig.10 This is a cross-sectional schematic diagram of the impeller assembly of this application;

[0033] Fig.11 This is a schematic diagram of the serpentine impeller blade of this application;

[0034] Fig.12 This is a schematic diagram of the assembly position of the impeller assembly in the water pump system of this application;

[0035] Fig.13 This is a schematic diagram of the overall structure of the speed sensor of this application;

[0036] Fig.14 This is a schematic diagram of the explosion of the speed sensor of this application;

[0037] Fig.15 This is the installation diagram of the speed sensor position for this application;

[0038] Fig.16 This is a schematic diagram of the structure and position of the speed sensor of this application;

[0039] Fig.17 This is a schematic diagram of the coil assembly of this application;

[0040] Fig.18 This is an exploded schematic diagram of the coil assembly of this application;

[0041] Fig.19 This is a schematic cross-sectional view of the winding skeleton of this application;

[0042] Fig. 20 for Fig.19 BB cross-sectional diagram;

[0043] Fig.21 for Fig. 20 Schematic diagram of CC cross section;

[0044] Fig. 22 for Fig.19 Schematic diagram of point A;

[0045] Fig.23 This is a cross-sectional schematic diagram of the coil assembly of the present application;

[0046] Fig.24 This is a schematic diagram of the coil assembly and pump housing base for this application;

[0047] Fig.25 This is a schematic diagram of the overall structure of the electronically controlled silicone oil water pump of this application;

[0048] Fig.26 This is a schematic diagram of the reinforcement ribs of the pump casing base for this application;

[0049] Fig. 27 This is a cross-sectional schematic diagram of the electronically controlled silicone oil water pump of this application;

[0050] Fig.28 This is a schematic diagram of the pump casing base reinforcement rib from another angle of this application;

[0051] Fig.29 This is a schematic cross-sectional view of the pump casing base of this application;

[0052] Fig.30 for Fig.29 The enlarged schematic diagram of the middle circle D;

[0053] Fig.31 for Fig.29 Enlarged schematic diagram after riveting at the middle circle D. DETAILED DESCRIPTION

[0054] For ease of understanding, preferred embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0055] Please refer to Figure 1 , Figure 2 and Figure 3 The schematic diagram, explosion diagram and cross-sectional diagram of the electronically controlled silicone oil water pump of the present application, the electronically controlled silicone oil water pump of the present application comprises an upper cover 1, a transmission plate 2, a connecting flange 3, a transmission plate fixing screw 4, an oil sealing plate 6, a valve plate assembly 5, a lower shell 7, a sealing ring 8, a positioning pin 9, a shaft-connected bearing 10, a magnetic ring 11, a speed sensor 12, a sensor fixing screw 13, a coil assembly 14, a coil assembly fixing screw 15, a pump housing base 16, a water seal 17, an impeller assembly 19 and a fastening screw 20; the upper cover 1 and the pulley are integrally forged and are an integral part; the upper cover 1 and the lower shell 7 are connected by fastening screws 20, the transmission plate 2 and the connecting flange 3 are connected and fixed on the shaft-connected bearing 10 by the transmission plate fixing screws 4 and are connected to the upper cover 1 by the viscosity of silicone oil, and when there is no silicone oil in the first working chamber 22, the upper cover 1 and the transmission plate 2 are relatively independent and not connected; When there is silicone oil in the first working chamber 22, the upper cover 1 is connected to the transmission plate 2 through silicone oil, the oil sealing plate 6 and the valve plate assembly 5 are installed on the lower shell 7 and fixed in position by the locating pin 9; the coil assembly 14 is fixed to the pump casing base 16 by the coil assembly fixing screw 15, the upper cover 1 and the pulley are an integral part structure, the pulley and the engine gear train are connected by belt transmission, the shaft bearing 10 and the pump casing base 16 are connected together by interference fit, and the pump casing base 16 is fixedly installed with the engine casing by bolts; the magnetic ring 11 is fixed on the shaft bearing 10, the speed sensor 12 is fixed to the pump casing base 16 by the sensor fixing screw 13, the water seal 17 is used to seal the shaft bearing 10 and the pump casing base 16 and is fixed between the two parts, and the impeller assembly 19 is interference mounted on the main shaft of the shaft bearing 10.

[0056] The working principle of the electronically controlled silicone oil water pump of the present application is described as follows: the engine gear train is connected to the pulley through a belt transmission to transmit the rotation speed to the upper cover 1. The silicone oil in the second working chamber 23 is affected by the centrifugal force, and oil is introduced from the oil inlet hole of the oil sealing plate 6 to fill the first working chamber 22 with silicone oil. The torque is transmitted through the viscosity of the silicone oil to rotate the transmission plate 2, thereby driving the main shaft of the shaft-connected bearing 10 to rotate, and causing the impeller assembly 19 to start rotating, thereby achieving the purpose of pumping water. When the flow is excessive, the speed sensor 12 obtains the speed by collecting the rotation of the magnetic ring 11 and transmits it to the ECU. The ECU controls the opening frequency of the valve plate assembly 5 through the coil assembly 14, thereby controlling the amount of silicone oil to adjust the speed of the impeller assembly 19, that is, the speed of the impeller assembly 19 is controlled by adjusting the silicone oil in the working chamber of the water pump.

[0057] Please refer to Figure 4 and Figure 5The schematic diagram of the valve plate assembly of the present application and the exploded schematic diagram of the valve plate assembly; the valve plate assembly 5 is a butterfly spring, and the valve plate assembly 5 includes a valve plate 51, a butterfly spring piece 52 and an iron derivative 53, the valve plate 51 is arranged on the butterfly spring piece 52, and the butterfly spring piece 52 is arranged on the iron derivative 53; the assembly method of the three is: a convex riveting point is punched out on the iron derivative 53, the butterfly spring piece 52 and the valve plate 51 are placed on it according to the hole position, and then they are fixed by riveting to form the valve plate assembly 5.

[0058] Please refer to Figure 5 and Figure 6 Schematic diagram of the valve plate of the present application, the valve plate 51 includes an inlet valve plate 511, an outlet valve plate 512 and a valve plate body 513, and the inlet valve plate 511 and the outlet valve plate 512 are arranged on the valve plate body 513. In the embodiment of the present application, the inlet valve plate 511, the outlet valve plate 512 and the valve plate body 513 are formed as one piece; the shapes of the inlet valve plate 511 and the outlet valve plate 512 are both plates that protrude axially from the valve plate assembly 5 and are bent horizontally, the lower surface of the inlet valve plate 511 corresponds to the oil inlet groove of the oil sealing plate 6, and the upper surface of the outlet valve plate 512 corresponds to the oil return groove of the oil sealing plate 6, and a single-piece design of valve plate oil inlet and oil return is adopted, so that the oil return and oil inlet form a switching mode, which becomes an operating mode in which the oil return hole is closed when the oil inlet hole is open, and the oil return hole is open when the oil inlet hole is closed.

[0059] The inlet valve plate 511 includes an annular arc bending portion 5111 and an inlet valve plate portion 5112. Since the valve plate sealing method adopts a contact seal, the plane stiffness of the inlet valve plate portion 5112 will directly determine its sealing performance and durability. The annular arc bending portion 5111 is an arc-shaped plate body. The annular arc bending portion 5111 is used to increase the stiffness of the inlet valve plate 511. The arc of the annular arc bending portion 5111 and the central through hole of the butterfly spring 52 Concentric, that is, the arc of the annular arc bend 5111 is a smooth arc, and the center of the arc and the center of the central through hole of the butterfly spring 52 are on the same axis, one side of the annular arc bend 5111 is connected to the inlet valve plate 5112, and the other side of the annular arc bend 5111 is connected to the valve plate body 513; after molding, the existence of the annular arc bend 5111 generates two-directional tensile stresses on the inlet valve plate 511 such as Figure 6 The arrows drawn on both sides of the inlet valve plate portion 5112 ensure the rigidity of the inlet valve plate 511; the arc design of the annular arc bending portion 5111 of the present application has better rigidity than the plane design of the prior art, which greatly increases the stability of the product.

[0060] like Figure 6As shown, the outlet valve plate 512 includes a connecting portion 5121, an outlet valve plate portion 5122 and a concave punching point 5123, one side of the connecting portion 5121 is connected to the outlet valve plate portion 5122, and the other side of the connecting portion 5121 is connected to the valve plate body 513, the concave punching point 5123 is arranged on the connecting portion 5121 and the outlet valve plate portion 5122, the concave punching point 5123 is used to increase the rigidity of the outlet valve plate 512, and the forming method of the concave punching point 5123 is: a groove is formed at the right-angle bend of the outlet valve plate 512 by stamping, and the groove formed by the stamping is the concave punching point 5123, and the design of the concave punching point 5123 causes the outlet valve plate 512 to generate tensile stress in two directions such as Figure 6 The arrows drawn on both sides of the outlet valve plate 5122 ensure the rigidity of the outlet valve plate 512, thereby greatly increasing the stability of the product.

[0061] Please refer to Figure 7 Schematic diagram of the butterfly-shaped spring piece of the present application, the butterfly-shaped spring piece 52 comprises an inner ring 521, an outer ring 522 and a plurality of spring pieces 523, the inner ring 521 is an annular sheet, the outer ring 522 is an annular sheet, and the spring piece 523 is an arc-shaped sheet; the inner ring 521 is fixedly connected to the ferrite 53, one end of the plurality of spring pieces 523 is connected to the outer edge of the inner ring 521, and the other end of the plurality of spring pieces 523 is connected to the inner edge of the outer ring 522. In the embodiment of the present application, the inner ring 521 and the outer ring 522 of the butterfly-shaped spring piece 52 are connected by five spring pieces 523, and because the shape of the five spring pieces 523 resembles the wings of a butterfly, it is called a butterfly-shaped spring piece. Figure 7 The shadow lines indicate that there are five spring pieces 523 in total. When designing the spring pieces 523, the smaller the elastic force, the longer the service life. However, if the elastic force is small, the rebound force is insufficient. Therefore, the present application adopts a five-piece combination to reduce the elastic force of each spring piece 523, thereby ensuring the service life. At the same time, when the five spring pieces 523 work together, the rebound force becomes larger, thereby ensuring its rebound force.

[0062] Please refer to Figure 8The schematic diagram of the iron derivative of the present application shows that the iron derivative 53 includes a plurality of diamond-shaped spots 531 on the surface facing the butterfly-shaped spring piece 52. The plurality of diamond-shaped spots 531 are formed by using a diamond punch to shape the surface of the iron derivative 53. After shaping, many diamond-shaped spots 531 appear on the surface of the iron derivative 53. The diamond-shaped spots 531 are used to make the iron derivative 53 flat. In addition, the iron derivative 53 is a hollow sheet body with an outer edge of four arcs connecting four straight lines. Specifically, it is a circular periphery with four sides of a square cut off. The iron derivative 53 is a dynamic iron derivative that receives the electromagnetic force of the solenoid valve. The material is pure iron. The electromagnetic force acting on the iron derivative 53 cannot be absolutely uniform. Therefore, the square cut edges on the periphery are left by dynamic balancing and to ensure its own flatness.

[0063] The main working process of the valve plate assembly 5 is: during movement, the inner ring 521 of the butterfly spring piece 52 is fixed on the derivative iron 53. When the derivative iron 53 moves downward, the inner ring 521 of the butterfly spring piece 52 also moves downward. At this time, the five spring pieces 523 on the butterfly spring piece 52 play an elastic role. When the speed becomes faster, for example, reaching 5Hz-10Hz, the parallel spring pieces of the present application will be more stable than traditional spring pieces.

[0064] The butterfly spring of the present application is made of high-quality heat-resistant alloy material and has the following characteristics:

[0065] 1. Butterfly structure design: The center of the butterfly spring is concave, and the two sides are symmetrically convex, forming a stable triangular support structure; this design can provide uniform elastic force distribution when the valve is closed, ensuring the sealing of the valve;

[0066] 2. Material selection: The selected heat-resistant alloy material has good thermal stability and fatigue resistance, and can maintain its shape and performance unchanged in a high temperature environment for a long time;

[0067] 3. Surface treatment: The surface of the butterfly shrapnel is specially treated, such as plating or coating, to enhance its corrosion resistance and wear resistance;

[0068] 4. Assembly design: The connection between the butterfly spring and the valve plate is designed with precise matching dimensions to ensure the accuracy and reliability of assembly.

[0069] Please refer to Fig. 9 and Fig.10The impeller assembly of the present application is shown in a schematic diagram of its appearance and a schematic diagram of its cross-section. The impeller assembly 19 of the present application adopts a centrifugal pump impeller blade with innovative structure and excellent performance. This impeller blade is a serpentine impeller blade, which is used in the electronically controlled silicone oil water pump inside the car. It provides efficient water flow power in the water pump system, realizes effective circulation of the coolant, and significantly reduces noise. At the same time, the pressure-isolating rib design at the bottom of the impeller assembly effectively separates high and low pressure areas, thereby optimizing the overall performance of the water pump. Fig. 9 In the embodiment, the impeller assembly 19 includes an impeller bushing 191 and a plastic-coated part 192. The plastic-coated part 192 is injection-coated and connected to the impeller bushing 191. The impeller bushing 191 has the characteristics of axial slotting and external squareness, so as to ensure the torque in both axial and radial directions. The plastic-coated part 192 includes a plurality of impeller blades 1921 and a plurality of fluid outflow channels 1922. The cross section of the impeller blade 1921 is a serpentine line. The impeller blade 1921 adopts a serpentine line design. Compared with the involute design of the prior art, it can more effectively reduce the fluid resistance, improve the working efficiency of the water pump, and help to overcome the fluid resonance phenomenon, so as to maintain a low noise level even at a high speed, thereby improving the operating environment of the water pump. The plurality of fluid outflow channels 1922 are composed of closed impeller blades. Fig.10 The area marked “low” is the low pressure area, the area marked “rising” is the rising pressure area, and the area marked “high” is the high pressure area.

[0070] Please refer to Fig.11 The schematic diagram of the serpentine impeller blade of the present application, in which only the impeller blade in the upper left corner is used to illustrate the design of the serpentine line, the pressure angle 195 of the impeller blade 1921 is 45 degrees, and the pitch circle 193 is concentric with the impeller assembly, Fig.11 For the sake of convenience, the pressure angle is marked as 195 and the pitch circle is marked as 193. It should be noted that the pitch circle is a tool for measuring angles. It divides a complete circle into equal parts and corresponds each part to the scale line on the plane disk to determine the angle. The pressure angle refers to the angle between the direction line of the driving force exerted on the follower when the mechanism moves and the velocity direction line of the force application point, without considering the friction in each moving pair and the influence of the gravity and inertia of the components. It is an indicator for judging the dynamic performance of the mechanism.

[0071] The composition of the serpentine line is described below. The diameter of the outer circle 1923 of the central hole of the plastic package 192 is equal to the diameter of the arc circle 194. The center 1941 of the arc circle 194 is at the intersection of the pitch circle 193 and the pressure angle 195. The serpentine line includes a straight line segment 19211 and an arc segment 19212. The intersection of the straight line segment 19211 and the arc segment 19212 is an arc transition; the arc segment 19212 is the intersection of the arc circle 194 and the pitch circle 193 toward the inside of the pitch circle 193. The straight line segment 19211 is a line connecting the intersection point and the end point of the pressure angle 195; the straight line segment 19211 and the arc segment 19212 form a serpentine curve of the impeller blade 1921, which is an overview of the entire serpentine line; the formed serpentine line impeller blade is like a snake. In the embodiment of the present application, the total number of impeller blades 1921 is 8, so the pressure angle is also uniformly 45 degrees. In addition, the diameter of the pitch circle 193 in the present application is equal to the diameter of the outer circle 1923 divided by 1.618.

[0072] Please refer to Fig.12 The schematic diagram of the assembly position of the impeller assembly of the present application in the water pump system, the impeller assembly also includes a pressure-isolating rib 1924, and the pressure-isolating rib 1924 is an annular convex rib, and the pressure-isolating rib 1924 protrudes from the plastic-encapsulated part 192, specifically, the surface of the plastic-encapsulated part 192 on the side facing the pump casing base 16, and a pump casing base groove is opened on the pump casing base 16 corresponding to the position of the pressure-isolating rib 1924, and the pressure-isolating rib 1924 rotates in the pump casing base groove. In the prior art, the pressure difference is adjusted by adjusting the end face clearance. The advantage of the pressure-isolating rib 1924 used in the present application is obvious. The height of the pressure-isolating rib 1924 can be quickly adjusted by turning it. Under this design, when the impeller assembly rotates, the pressure-isolating rib 1924 attached to the impeller assembly also starts to rotate. At this time, the pressure-isolating rib 1924 will also drive water around the low-pressure area to rotate, thereby forming a water wall barrier, so that the high and low pressure partition is completed in such a simple way. The present application designs water-isolating pressure-isolating ribs 1924 at the bottom of the impeller assembly, which can effectively separate high-pressure and low-pressure areas, reduce energy loss, and improve the stability and efficiency of the water pump.

[0073] The impeller assembly of the present application is a part of an electrically controlled silicone oil water pump, and its main function is to pump water. The working principle is to use the centrifugal force of the rotating impeller blades to generate suction to achieve the purpose of pumping water. Therefore, it can be divided into the following types: Fig.10 The three areas shown, namely the inlet pressure of the impeller assembly and the area where the oil seal is located, are low-pressure areas. For ease of understanding, Fig.11There are four overpressure holes 1925 at the upper and lower ends of the impeller assembly shown. The inside of the closed impeller blade is the boost zone (that is, the inside of the fluid outflow channel 1922 is the boost zone), and the outside of the impeller assembly is the outlet pressure high pressure zone. At this time, it is easy to understand the pressure of the electronically controlled silicone oil water pump. When the water pump pressure is required to reach 270kPa, the pressure difference between the outlet pressure high pressure zone and the inlet pressure low pressure zone is 270kPa. Here is a supplementary explanation. This pressure difference is not the larger the better, nor the smaller the better. It is generally required to be guaranteed within plus or minus 5kPa. In terms of adjusting the pressure difference, the existing technology uses adjusting the end face gap to adjust the pressure difference, but the gap is a very sensitive data, which will affect the flow rate and there is also the risk of mechanical scratches. At this time, the advantage of the pressure-isolating rib 225 is very obvious. It can be quickly adjusted by simply turning the height of the pressure-isolating rib 225. The principle of this design is that when the impeller assembly rotates, the pressure-isolating rib 225 attached to the impeller assembly also starts to rotate. At this time, the pressure-isolating rib 225 will also drive the water around the low-pressure area to rotate, thereby forming a water wall barrier. In this simple way, the high and low pressure division is completed.

[0074] Since the speed of the impeller assembly 19 is fed back to the engine ECU system through the speed sensor 12, the opening frequency of the valve plate is controlled by the electronic control of the coil assembly 14, thereby controlling the amount of silicone oil to adjust the speed of the impeller assembly 19, that is, the speed of the impeller assembly 19 is controlled by adjusting the silicone oil in the working chamber of the water pump; the transmission plate 2 and the impeller assembly 19 are connected by a double-bearing design mechanism, and the speed change of the impeller assembly 19 is driven by the speed change of the transmission plate 2; an annular magnetic return circuit breaker is installed on the pump housing base 16, which works together with the coil assembly 14 to control the closing action of the valve plate assembly 5, thereby controlling the amount of silicone oil to adjust the speed of the impeller assembly 19, and at the same time, the speed sensor 12 identifies the speed of the impeller assembly 19 and feeds it back to the engine ECU system for adjustment and control, which can achieve stepless speed buffering, while saving energy, it can also extend the life of the water pump bearing, thereby improving the durability of the water pump.

[0075] In summary, the purpose of the impeller assembly of this application is to:

[0076] 1. By adopting the serpentine line design, the fluid resistance is reduced and the pump efficiency is improved;

[0077] 2. Overcome fluid resonance and significantly reduce operating noise;

[0078] 3. Through the design of pressure isolation ribs, high and low pressure areas can be effectively separated to optimize the performance of the water pump.

[0079] Please refer to Fig.13 and Fig.14The overall structural diagram and explosion diagram of the speed sensor of the present application. The main function of the speed sensor of the present application is to accurately measure and monitor the speed of the impeller assembly 19; the speed sensor generates a pulse signal through the claw pole on the magnetic ring, and the speed sensor collects these signals to determine the real-time speed of the water pump, thereby providing accurate feedback to the electronic control unit (ECU) for adjusting the operating state of the water pump. The speed sensor 12 of the present application is a Hall speed sensor, and the speed sensor 12 includes an active Hall 121, a PCB circuit board 122, three pins 123 and a plastic package 125. The active Hall 121 is welded to the PCB circuit board 122. In the embodiment of the present application, the active Hall 121 and the PCB circuit board 122 are connected in the following manner: the connection pin of the active Hall 121 is bent and then inserted and welded on the PCB circuit board 122. In addition, the active Hall described in the present application refers to a Hall with a magnet.

[0080] like Fig.14 As shown, the three pins 123 are welded and connected to the PCB circuit board 122. In the embodiment of the present application, the three pins 123 are connected to the PCB circuit board 122 in the following manner: three T-shaped holes are opened on the PCB circuit board 122, and the three pins 123 are designed to be a T-shaped structure, which can just be embedded in the T-shaped holes of the PCB circuit board 122 to form a flat structure; the overmolded part 125 is overmolded to connect the active Hall 121, the PCB circuit board 122, and the three pins 123. After overmolding, the positions of the three pins 123 form a plug that can be electrically connected to the ECU through a wiring harness. The speed sensor 12 is arranged on the pump housing base 16 of the electronically controlled silicone oil water pump. Please refer to Fig.15 and Fig.16 In the embodiment of the present application, the speed sensor 12 is inserted into and connected to the pump casing base 16, and is locked to the pump casing base 16 by the sensor fixing screw 13. After assembly, one end of the three pins 123 is outside the pump casing base 16, and one end of the active Hall 121 is inside the pump casing base 16.

[0081] Please refer to Fig.14 The speed sensor 12 also includes a heat-insulating glue 124, which is a heat-resistant glue. The heat-insulating glue 124 is applied to connect each soldering point. As mentioned above, the PCB circuit board 122 is welded to connect the active Hall 121 and the three pins 123. After welding, the heat-insulating glue 124 is applied to each soldering point, and then the product is overmolded by injection molding to form a overmolded part 125. During the injection molding process, the heat-insulating glue 124 protects the soldering point from being affected by the high temperature of 220 degrees. The heat-resistant glue of the heat-insulating glue 124 is arranged on the soldering point to ensure the long-term stability of the soldering point.

[0082] like Fig.14 and Fig.16 As shown, the speed sensor 12 also includes a sensor sealing ring 126, and the sensor sealing ring 126 is arranged on the overmolded part 125. After the overmolded part 125 is equipped with the sensor sealing ring 126, the speed sensor 12 is formed. The speed sensor 12 is inserted and connected to the pump casing base 16. The sensor sealing ring 126 is located in the shell of the pump casing base 16 to play a role of waterproof and dustproof, thereby improving the service life of the electronically controlled silicone oil water pump.

[0083] like Fig.13 and Fig.16 As shown, the speed sensor 12 also includes a magnetic ring 11, and the magnetic ring 11 is provided with a plurality of claw poles. The magnetic ring 11 is arranged on the shaft bearing 10 with an interference fit, and the magnetic ring 11 corresponds to the position of the active Hall 121. The active Hall 121 is used to sense the plurality of claw poles and transmit the information to the ECU. In the embodiment of the present application, the number of the claw poles is six, but it cannot be used to limit the present application. As long as more or less claw poles can stably transmit information, they should be within the protection scope of the present application. The magnetic ring 11 is an important component for providing a signal source for the speed sensor 12. Fig.16 In the embodiment, the shaft-connecting bearing 10 is inserted into the pump housing base 16, and its upper end is fixed by rotation riveting, and the magnetic ring 11 is fitted at the lower end of the shaft-connecting bearing 10 by interference fit. Fig.16 As shown, the magnetic ring 11 and the installed speed sensor 12 are in suitable radial and axial positions. In addition, the radial clearance between the magnetic ring 11 and the speed sensor 12 must be between 0.3MM and 0.5MM. If it is too large, it will result in failure to collect data, and if it is too small, it will result in inaccurate collection.

[0084] The working principle of the speed sensor 12 described in the present application is: the working principle of the speed sensor 12 is relatively simple. After the shaft-connected bearing 10 rotates, it drives the magnetic ring 11 with an interference fit thereon to rotate. The magnetic ring 11 is provided with 6 claw poles. The speed sensor 12 collects 6 pulse signals, and each pulse corresponds to a passage of the claw pole. Six pulses are used as one rotation to calculate the speed of the water pump, and the feedback is given to the ECU for speed collection.

[0085] In summary, the speed sensor of the present application has the following characteristics:

[0086] 1. Magnetic ring design: There are 6 claw poles on the magnetic ring, which are used to generate 6 pulse signals. Each pulse corresponds to one passage of the claw pole, which is used to calculate the speed of the water pump;

[0087] 2. Interference fit assembly: The magnetic ring is assembled on the shaft of the shaft-connected bearing by interference fit to ensure the stable connection between the magnetic ring and the shaft;

[0088] 3. Speed ​​sensor structure: including active Hall, PCB circuit board and pins. These components are packaged through plastic one-piece molding process, which improves the integrity and waterproof performance of the speed sensor;

[0089] 4. Embedded pin design: The pin is embedded and integrated with the PCB circuit board, avoiding the problem of protruding pins affecting injection molding;

[0090] 5. Heat-resistant glue protection: During the injection molding process, in order to protect the solder joints from the influence of high temperature of 220 degrees, heat-resistant glue is arranged on the solder joints to ensure the long-term stability of the solder joints.

[0091] Please refer to Fig.17 and Fig.18 The coil assembly schematic diagram and explosion schematic diagram of the present application. The coil assembly of the present application is used to generate a high-efficiency magnetic field to drive the valve plate assembly 5, thereby achieving precise control of the speed of the water pump impeller. The slots for winding on the winding frame are horizontally arranged straight slots, which are different from the spiral slots in the prior art, and the straight slots are designed to be smooth at the ends. That is, the straight slots are not 360-degree complete rings but slots that are disconnected at the ends. When winding, the wire enters the next straight slot at an angle at the smooth surface, and the winding is repeated up and down to form a coil. Fig.18 As shown, the coil assembly 14 of the present application includes a coil 141, a winding skeleton 142 and two winding pins 143. The coil 141 is connected to the winding skeleton 142 by winding, and the winding skeleton 142 is connected to the two winding pins 143 by injection molding. The process flow among the three is: first, the winding skeleton 142 is injection molded, and the two winding pins 143 are encapsulated by it on the winding skeleton 142 during injection molding, and then the wire is wound. In the embodiment of the present application, the wound wire is an enameled wire, and the wound enameled wire forms the coil 141. The wound coil 141 is wound around the two winding pins 143 from head to tail. The wound coil 141 is bound with auxiliary tape to prevent it from loosening. The method is to apply adhesive on the surface of the coil 141 to prevent the wire from loosening.

[0092] Please refer to Fig.19 , Fig. 20 , Fig.21 and Fig. 22 The winding skeleton cross-sectional diagram, BB cross-sectional diagram, CC cross-sectional diagram and A schematic diagram of the present application, the winding skeleton 142 includes an upper ring portion 1421, a winding shaft 1422 and a lower ring portion 1423, the upper ring portion 1421 and the lower ring portion 1423 are annular hollow sheets, the winding shaft 1422 is an annular hollow cylinder, and the upper ring portion 1421, the winding shaft 1422 and the lower ring portion 1423 are made of injection molding as a whole, as shown in FIG. Fig. 22As shown, the surface of the winding shaft 1422 includes a plurality of straight grooves 14221 and a smooth surface 14222 located between the ends of the plurality of straight grooves 14221. That is to say, the straight groove 14221 is not a 360-degree annular groove, but is connected with the smooth surface 14222 to form a 360-degree annular groove. Since the straight groove 14221 is not a spiral groove, the wound wire presents a Fig.21 The horizontal line in the figure, and the smooth surface 14222 is where the wire is wound from one straight slot 14221 to the next straight slot 14221. The inclination angle of the wire on the smooth surface 14222 is greater than 0 degree and less than or equal to 30 degrees or greater than 180 degrees and less than or equal to 210 degrees, preferably 10 degrees or 190 degrees, and these two angles represent the angles when going back or forth; the width of the straight slot 14221 is 0.5% larger than the wire diameter of the coil 141, ensuring that the wires can be stacked and arranged neatly layer by layer, achieving an electromagnetic efficiency of up to 95%, and significantly improving the performance of the water pump; the design of the straight slot 14221 and the smooth surface 14222 described in the present application reduces the friction and loss during the coil winding process, improves the winding efficiency and durability of the coil 141, and the optimized wire passing method and smooth surface design extend the service life of the coil assembly and reduce maintenance costs.

[0093] Please refer to Fig. 22 for Fig.19 A schematic diagram of point A, specifically an enlarged view of point A, the first groove of the plurality of straight grooves 14221 is a 0.5 groove, that is, Fig. 22 The rightmost slot in the plurality of straight slots 14221 is the last slot of 1.5 slots, that is, Fig. 22 The leftmost slot, and the height of the last slot is flush with the slot top, the winding skeleton 142 is opened with slots matching the wire diameter, and the total length of the slots is equal to the winding axis length of the winding skeleton to achieve close arrangement and efficient electromagnetic conversion of the coil 141 wire; the straight slot 14221 described in the present application starts to enter from 45 degrees of the winding skeleton 142, and adopts a straight slot design to ensure that the spiral trajectory of the coil 141 wire in the winding process can be smoothly transitioned, reducing friction and loss when passing the wire.

[0094] like Fig.18As shown, the coil assembly 14 also includes an enveloping iron skeleton 144, which is a hollow body with an annular groove. The winding skeleton 142 is arranged in the enveloping iron skeleton 144, that is, after the coil 141 is wound, it is bound with auxiliary tape to prevent it from loosening, and then the winding skeleton 142 is placed in the enveloping iron skeleton 144. In addition, the coil assembly 14 also includes a coil overmolded part 146 and two plug-in boards 145, wherein the coil overmolded part 146 is overmolded to connect the envelope iron frame 144 and the coil 141 therein and the winding frame 142; one end of the two plug-in boards 145 is connected to the two winding pins 143, and the other end of the two plug-in boards 145 is connected to the plug part of the coil overmolded part 146, and an external power source is connected to the two plug-in boards 145 by inserting the plug part of the coil overmolded part 146 to pass power to the coil 141 to complete electromagnetic conversion; the process flow is: after the winding frame 142 is placed in the envelope iron frame 144, the two plug-in boards 145 are welded, and then the coil overmolded part 146 is injection molded, and then three screw bushings 147 are installed; after completion, the coil diagram assembly 14 is formed, please refer to Fig.23 The cross-sectional schematic diagram of the coil assembly of the present application shows the plastic encapsulation.

[0095] Please refer to Fig.24 Schematic diagram of the coil assembly and pump housing base of the present application, the coil assembly 14 is installed on the pump housing base 16 and fixed by three coil assembly fixing screws 15, the three coil assembly fixing screws 15 are locked and connected to the three screw bushings 147 to fix the coil assembly 14 on the pump housing base 16; the present application uses layers of wires stacked and arranged neatly, which has the advantage of making the magnetic lines of force of the solenoid valve completely uniform and the magnetic field strength per unit area is maximized. In order to achieve the goal of maximizing the magnetic field strength per unit area, a perfect winding skeleton design is required, and the coil assembly of the present application has the following characteristics:

[0096] 1. Winding skeleton design: The winding skeleton is provided with grooves matching the wire diameter, and the width of the grooves is 0.5% larger than the wire diameter, ensuring that the coils can be stacked and arranged neatly layer by layer;

[0097] 2. Slot design: The total length of the slots must be equal to the length of the winding frame. The first slot is 0.5 slots, the last slot is 1.5 slots, and the height of the last slot is flush with the slot top to achieve close arrangement of the coils and efficient electromagnetic conversion;

[0098] 3. Wire passing method: The wire entry of the slot starts from the 45-degree angle of the winding frame, and adopts a straight slot design to ensure that the spiral line trajectory of the coil can transition smoothly during the winding process, reducing friction and loss during wire passing;

[0099] 4. Smooth surface design: The smooth surface winding angle is greater than 0-less than or equal to 30 degrees and greater than 180-less than or equal to 210 degrees, which ensures the smooth transition of the coil during the winding process and improves the wire passing efficiency.

[0100] Please refer to Fig.25 and Fig.26 Schematic diagram of the overall structure of the electronically controlled silicone oil water pump of this application and the schematic diagram of the reinforcement ribs of the pump casing base, Fig.25 and Fig.26 The electric-controlled silicone oil water pump in the text refers to the angle when it is installed on the car, so the up, down, left, and right in the text refer to the orientation of the electric-controlled silicone oil water pump in use; the electric-controlled silicone oil water pump integrated moisture management pump housing base of this application mainly provides structural support and integrates key components, while managing the tiny leakage of water that may occur during the operation of the water pump. The pump housing base includes a water storage cavity and an evaporation hole to ensure that the leaked water is effectively collected and evaporated, preventing water from damaging the shaft and bearings, thereby ensuring the service life and performance of the water pump. Fig. 27 In the present application, one side of the pump casing base 16 is connected to the impeller assembly 19, and the other side of the pump casing base 16 includes an axially protruding pump casing base shaft cylinder 169 for mounting the shaft-connected bearing 10 and reinforcing ribs extending from the outer wall of the pump casing base shaft cylinder 169 to the circumference of the pump casing base 16 for support. These reinforcing ribs play a supporting role and support the shaft-connected bearing 10 to withstand a torque of 25NM. Therefore, the position arrangement of the structural reinforcing ribs is very important, such as Fig.25 and Fig.26 As shown, these reinforcing ribs include the first largest rib 161, the second largest rib 162, the third largest rib 163, the fifth largest rib 165, the sixth largest rib 166 and the seventh largest rib 167. Fig.25 In order to show the direction of the belt 21, the upper cover pulley group is also drawn. Fig.26 If the belt 21 and the upper cover pulley assembly are removed, these reinforcing ribs can be clearly seen.

[0101] The reinforcing rib layout of the present application is as follows: the first large rib 161 is a vertical protruding rib located below the pump housing base shaft cylinder 169, and the first large rib 161 is on an absolute vertical line, which is the lowest position of the pump housing base shaft cylinder 169 assembled on the car; Fig.25 As shown, the second large rib 162 and the third large rib 163 are raised ribs located on the left side of the pump casing base shaft cylinder 169, and the angle between the second large rib 162 and the third large rib 163 is parallel to the bending angle of the belt 21; the fifth large rib 165 and the seventh large rib 167 are raised ribs located on the right side of the pump casing base shaft cylinder 169, and the angle between the fifth large rib 165 and the seventh large rib 167 forms a symmetrical angle with the main movement angle of the belt 21; the sixth large rib 166 is a raised rib located in the middle of the angle between the fifth large rib 165 and the seventh large rib 167.

[0102] like Fig.26 As shown, the pump casing base 16 also includes a fourth large rib 164 and an eighth large rib 168 for auxiliary support. The fourth large rib 164 is located between the third large rib 163 and the fifth large rib 165. The fourth large rib 164 is large enough to maintain its uniformity, but needs to avoid the position of the evaporation hole 1612; the eighth large rib 168 is located between the first large rib 161 and the seventh large rib 167. The eighth large rib 168 is large enough to maintain its uniformity. These eight reinforcing ribs play a supporting role and can support the shaft bearing 10 to withstand a torque of 25NM, thereby improving the service life and performance of the electronically controlled silicone oil water pump.

[0103] Fig.26 , Fig. 27 and Fig.28 In the embodiment, the pump casing base 16 further includes a water storage chamber 1611, an evaporation hole 1612 and a water baffle 1613. The chamber wall of the water storage chamber 1611 protrudes axially from the pump casing base 16. The two ends of the chamber wall of the water storage chamber 1611 are respectively connected to the first large rib 161 and the outer wall of the pump casing base shaft cylinder 169, and an outflow hole 1691 is provided on the barrel wall of the pump casing base shaft cylinder 169 within the range of the chamber wall of the water storage chamber 1611. The evaporation hole 1612 is a through hole provided on the upper side of the pump casing base shaft cylinder 169. The water baffle 1613 is a sheet provided above the evaporation hole 1612, and is used to prevent water from entering the evaporation hole 1612. Fig. 27 For the convenience of display, the evaporation hole 1612 is located on the wall on the left side of the pump casing base shaft cylinder 169. However, when in use, the evaporation hole 1612 is on the wall on the upper side of the pump casing base shaft cylinder 169 to ensure that water vapor evaporates from here. The water storage chamber 1611 needs to be located at the first large rib 161 to ensure the lowest point of the water. Because the water seal 17 is a dynamic seal and cannot be completely sealed, there is generally a leakage of 5ML within 10 hours. The purpose of the evaporation hole 1612 is to evaporate the 5ML leakage naturally. When the surrounding air temperature and humidity affect the evaporation, the water droplets formed must ensure that they quickly enter the water storage chamber 1611 and are collected to wait for natural evaporation when idle. In extreme working conditions, the water in the water storage chamber 1611 will naturally flow away after reaching 10ML.

[0104] Please refer to Fig. 27 , Fig.29 , Fig.30 and Fig.31 The schematic cross-sectional view of the pump casing base of this application is as follows: Fig. 27As shown, there are many parts attached to the pump housing base 16. The shaft bearing 10 is pressed in from the upper end and then closed by riveting. The closing method is as follows Fig.31 As shown ( Fig.29 The deformation of the enlarged view at D in the middle), after riveting, the opening of the pump housing base shaft cylinder 169 is closed towards the center of the circle: the state before closing is as follows Fig.30 The opening of the pump housing base shaft cylinder 169 is straight and not concave ( Fig.29 The Hall speed sensor 12 is fixed to the lower end of the shaft bearing 10 with screws, the coil assembly 14 is placed on 8 reinforcing ribs and fixed with screws, the lower end of the pump casing base 16 is equipped with a water seal 17, and the impeller assembly 19 is pressed in from below, and there is a water barrier between the impeller assembly 19 and the pump casing base 16, where the water barrier acts to isolate the high and low areas of water pressure, which directly determines the hydraulic efficiency.

[0105] In summary, the electrically controlled silicone oil water pump integrated moisture management pump housing base of the present application has the following characteristics:

[0106] 1. Integrated design: The pump housing base integrates key components such as water seal, shaft bearing, Hall speed sensor and coil assembly, which simplifies the assembly process and improves the integration and work efficiency of the overall system;

[0107] 2. Water storage chamber: The pump housing base is provided with a water storage chamber with a volume greater than 20ML. Its installation position is at the lowest surface of the shaft cylinder (installation hole) of the pump housing base. It is used to collect water leaked due to slight leakage of the water seal to prevent the water from directly contacting the shaft bearing;

[0108] 3. Evaporation hole and water baffle: An evaporation hole is set at the top of the water storage chamber to promote water evaporation and reduce water accumulation; in order to prevent external rainwater from flowing back, a water baffle is specially designed at the top of the evaporation hole;

[0109] 4. Reinforcement ribs: Reinforcement ribs are arranged on the pump casing base in the same direction as the belt movement to improve the structural strength and support performance of the pump casing base shell and ensure stability under high load working conditions;

[0110] 5. Riveted rolling joint: The pump casing base and the shaft bearing are connected by riveted rolling joint technology, which provides a firm and durable connection method to ensure stability under high load working conditions.

[0111] It should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0112] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0113] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0114] Due to the adoption of the above technical solution, the utility model has the following advantages and effects:

[0115] First, efficiency improvement: The serpentine design enables the impeller assembly to maintain high efficiency under various working conditions, especially at high speeds, the efficiency improvement is more significant;

[0116] Second, noise reduction: The innovative blade design effectively reduces fluid resonance and reduces the noise during the operation of the pump;

[0117] Third, performance optimization: The design of the pressure-isolating ribs helps to optimize the separation of high-pressure and low-pressure areas of the water pump, thereby improving the overall performance and stability of the water pump.

[0118] Of course, any specific embodiment of the present invention does not necessarily have all of the above technical effects at the same time.

[0119] The above disclosure is only a preferred embodiment of the present invention, but is not intended to limit itself. Any equivalent changes and modifications made by any technician familiar with the field without violating the spirit and connotation of the present invention should fall within the protection scope of the present invention.

Claims

1. An electrically controlled silicone oil water pump with an impeller assembly, used inside a car, characterized in that: The impeller assembly includes an impeller bushing and a plastic-encapsulated component, wherein the plastic-encapsulated component is injection-molded and connected to the impeller bushing. The plastic-encapsulated component includes a plurality of impeller blades and a plurality of fluid outflow channels, and the cross section of the impeller blade is a serpentine line.

2. The electrically controlled silicone oil water pump with an impeller assembly as claimed in claim 1, characterized in that: The pressure angle of the impeller blade is 45 degrees, the pitch circle is concentric with the impeller assembly, the outer circle diameter of the center hole of the plastic-wrapped part is equal to the arc circle diameter, the center of the arc circle is at the intersection of the pitch circle and the pressure angle, the serpentine line includes a straight line segment and an arc line segment, the arc line segment is an arc line extending from the intersection of the arc circle and the pitch circle toward the inside of the pitch circle; the straight line segment is a line connecting the intersection point and the end point of the pressure angle; the intersection point of the straight line segment and the arc line segment is an arc transition.

3. The electrically controlled silicone oil water pump with an impeller assembly as claimed in claim 2, characterized in that: The number of the impeller blades is eight.

4. The electrically controlled silicone oil water pump with an impeller assembly as claimed in claim 2, characterized in that: The diameter of the pitch circle is equal to the diameter of the outer circle divided by 1.

618.

5. The electrically controlled silicone oil water pump with an impeller assembly as claimed in claim 2, characterized in that: The impeller assembly further comprises a pressure isolating rib, and the pressure isolating rib protrudes from the plastic covering member.

6. The electrically controlled silicone oil water pump with an impeller assembly as claimed in claim 2, characterized in that: The impeller assembly also includes a plurality of overpressure holes.

7. The electrically controlled silicone oil water pump with an impeller assembly as claimed in claim 6, characterized in that: The electronically controlled silicone oil water pump further comprises a valve plate assembly, the valve plate assembly comprises a valve plate, a butterfly spring plate and an iron derivative, the valve plate is arranged on the butterfly spring plate, and the butterfly spring plate is arranged on the iron derivative; wherein, The valve plate comprises an inlet valve plate, an outlet valve plate and a valve plate body, wherein the inlet valve plate and the outlet valve plate are arranged on the valve plate body; The inlet valve plate comprises an annular arc bending portion and an inlet valve plate portion, wherein the annular arc bending portion is an arc-shaped plate body, and the annular arc bending portion is used to increase the rigidity of the inlet valve plate, and the arc of the annular arc bending portion is concentric with the central through hole of the butterfly spring piece, one side of the annular arc bending portion is connected to the inlet valve plate portion, and the other side of the annular arc bending portion is connected to the valve plate body; The outlet valve plate includes a connecting portion, an outlet valve plate portion and a concave punching point, one side of the connecting portion is connected to the outlet valve plate portion, and the other side of the connecting portion is connected to the valve plate body, and the concave punching point is arranged on the connecting portion and the outlet valve plate portion, and the concave punching point is used to increase the rigidity of the outlet valve plate.

8. The electrically controlled silicone oil water pump with an impeller assembly as claimed in claim 7, characterized in that: The electronically controlled silicone oil water pump also includes a speed sensor including an active Hall, a PCB circuit board, three pins and a plastic overmolding. The active Hall is welded and connected to the PCB circuit board, the three pins are welded and connected to the PCB circuit board, the plastic overmolding is plastic-coated and connected to the active Hall, PCB circuit board and three pins. The speed sensor is arranged on the pump casing base of the electronically controlled silicone oil water pump, one end of the three pins is outside the pump casing base, and one end of the active Hall is inside the pump casing base.

9. The electrically controlled silicone oil water pump with an impeller assembly as claimed in claim 8, characterized in that: The electronically controlled silicone oil water pump also includes a coil assembly, which includes a coil, a winding skeleton and two winding pins. The coil is connected to the winding skeleton, and the winding skeleton is connected to the two winding pins by a winding package. The winding skeleton includes an upper ring portion, a winding shaft and a lower ring portion. The upper ring portion and the lower ring portion are annular hollow sheets, and the winding shaft is an annular hollow cylinder. The surface of the winding shaft includes a plurality of straight grooves and a smooth surface located between the ends of the plurality of straight grooves. The width of the straight groove is 0.5% larger than the wire diameter of the coil, and the inclination angle of the wire on the smooth surface is greater than 0 degrees and less than or equal to 30 degrees or greater than 180 degrees and less than or equal to 210 degrees.

10. The electrically controlled silicone oil water pump with an impeller assembly as claimed in claim 9, characterized in that: The electronically controlled silicone oil water pump further comprises a pump casing base, one side of the pump casing base is connected to the impeller assembly, and the other side of the pump casing base comprises an axially protruding pump casing base shaft cylinder for mounting a shaft-connected bearing and a first rib, a second rib, a third rib, a fifth rib, a sixth rib and a seventh rib extending from the outer wall of the pump casing base shaft cylinder to the circumference of the pump casing base for support, wherein: The first large rib is a vertical protruding rib located below the shaft cylinder of the pump housing base; The second and third major ribs are raised ribs located on the left side of the shaft cylinder of the pump housing base, and the included angle between the second and third major ribs is parallel to the bending angle of the belt; The fifth and seventh major ribs are raised ribs located on the right side of the shaft cylinder of the pump housing base, and the angle between the fifth and seventh major ribs forms a symmetrical angle with the main motion angle of the belt; The sixth major rib is a raised rib located exactly in the middle of the angle between the fifth major rib and the seventh major rib.

Images