Automotive electronic water pump with filtering function

Abstract

The vehicle electronic water pump with the filtering function comprises a water pump volute, the water pump volute is downwards connected with a shell, the water pump volute is axially and upwards provided with a water inlet pipe, the water pump volute is tangentially connected with a water outlet pipe, a filter cartridge with an opening in the top is embedded in a pipe opening of the water inlet pipe, and the top end of the filter cartridge extends in the radial direction to be provided with a binding face. The attaching surface is downwards attached to the top end surface of the water inlet pipe; an annular positioning sealing strip is downwards arranged on the binding surface; the upper end face of the water inlet pipe is concavely provided with a positioning sealing groove matched with the positioning sealing strip, and the positioning sealing strip is embedded into the positioning sealing groove and is in tight pressing fit with the positioning sealing groove. The positioning sealing strip of the binding face is embedded into the positioning sealing groove, on one hand, the matching area between the binding face and the end face of the water inlet pipe is increased, and on the other hand, good sealing performance is achieved between the positioning sealing strip and the positioning sealing groove through tight pressing matching. The filter cartridge is embedded and matched with the water inlet pipe and is convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to a vehicle electronic water pump, in particular to a filtering technology of the electronic water pump. Background Art

[0002] Electronic water pumps are used to cool the engine in automobiles. They maintain the engine's optimal operating temperature by driving the circulating coolant, thereby improving fuel efficiency, reducing emissions, and extending engine life. They are essential components for turbocharged engines and are widely used in mid- to high-end models.

[0003] Electronic water pumps have the advantages of compact structure, easy installation, flexible control, reliable performance, low power consumption and high efficiency. They are gradually replacing traditional mechanical water pumps in the transformation and upgrading of the automotive industry.

[0004] The mechanical part of an electronic water pump has high-speed rotating parts, so the clearance between these rotating parts is a key design parameter of the water pump. At the same time, the size of the internal clearance also affects the operating efficiency of the water pump. In other words, the smaller the clearance, the higher the transmission efficiency.

[0005] Currently, the clearance between moving parts within a pump is primarily determined by the cleanliness of the fluid being transported. The minimum clearance should be greater than the dimensional limit for the fluid's cleanliness. Liquid cleanliness directly impacts the design value of the pump's hydraulic clearance, thus limiting the pump's transmission efficiency.

[0006] 1. To pursue higher transmission efficiency, it is necessary to reduce the fitting gap, which in turn requires the liquid passing through the electronic water pump to have a higher degree of cleanliness, making it necessary to filter the liquid.

[0007] 2. Wear is a common failure mode for high-speed rotating components. Impurities in the liquid entering the pump can cause the pump to become stuck or accelerate wear, damaging the hydraulic structure and ultimately causing pump failure. Filtering the liquid entering the pump to control its cleanliness can significantly reduce wear.

[0008] For these two reasons, the electronic water pump needs to be equipped with a liquid filter. Since the filter needs to be replaced if it becomes clogged, a removable filter is preferred. However, the filter must maintain a seal with the electronic water pump, making it difficult to achieve both easy removal and a good seal. Utility Model Content

[0009] The purpose of the utility model is to provide a vehicle electronic water pump with a filtering function, wherein the filtering structure has both the advantages of easy disassembly and good sealing.

[0010] To achieve the above-mentioned object, the utility model provides an electronic water pump with a filtering function for a vehicle, comprising a water pump volute, the water pump volute being downwardly connected to a housing, a motor being arranged in an inner cavity formed by the water pump volute and the housing, an impeller being installed at the output end of the motor, the impeller being located in the water pump volute, a water inlet pipe being axially upwardly provided in the water pump volute, a water outlet pipe being tangentially connected to the water pump volute, a filter cartridge with an open top being embedded in the pipe opening of the water inlet pipe, a fitting surface being radially extended from the top end of the filter cartridge, the fitting surface being fitted downwardly with the top end surface of the water inlet pipe;

[0011] An annular positioning sealing strip is provided downward on the fitting surface, and the vertical cross-section of the positioning sealing strip is a cone with a larger top and a smaller bottom; the upper end surface of the water inlet pipe is recessed with a positioning sealing groove that is compatible with the positioning sealing strip, and the positioning sealing strip is embedded in the positioning sealing groove and forms a tight fit with the positioning sealing groove.

[0012] The fitting surface radially extends out of the outer wall of the water inlet pipe and forms a suspended portion, which is used as a handle for disassembling the filter cartridge.

[0013] A mounting groove is provided at the bottom of the shell, and a PCB control board is provided in the mounting groove. The PCB control board is connected to the motor through a line. The PCB control board is connected to a connector through the line. The connector is located outside the mounting groove and is used to connect to the vehicle circuit; a potting glue layer is provided in the mounting groove below the PCB control board, and the mounting groove below the potting glue layer is connected to the back cover.

[0014] An ultrasonic vibrator is embedded in the water inlet pipe at the filter cartridge, and the ultrasonic vibrator is connected to the PCB control board through a circuit.

[0015] The utility model has the following advantages:

[0016] The positioning seal strip on the fitting surface is embedded in the positioning seal groove, which not only increases the matching area between the fitting surface and the end face of the water inlet pipe, but also ensures a good seal between the positioning seal strip and the positioning seal groove through a tight fit. The filter cartridge is embedded in the water inlet pipe, making it easy to disassemble.

[0017] The suspended portion facilitates application of axial pulling force to the filter cartridge when the filter cartridge is disassembled, thereby making it more convenient to disassemble the filter cartridge.

[0018] The connector facilitates connection of the present invention to the vehicle ECU via the vehicle circuit, thereby accepting control from the vehicle ECU. The potting layer provides insulation, waterproofing, and moisture-proofing for the PCB control board. The rear cover also provides physical protection for the PCB control board.

[0019] The vehicle ECU controls the on and off of the ultrasonic vibrator. The ultrasonic vibrator has the following technical functions:

[0020] ① High-frequency vibration reduces the accumulation of impurities and particles on the filter cartridge, slowing down the process of filter clogging. ② Partially removes impurities and particles that become embedded in the filter cartridge when it intercepts foreign matter in the water, slowing down the process of filter clogging. ③ Extends the life of the filter cartridge and reduces the frequency of filter replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model.

[0023] Figure 3 It is a three-dimensional structural diagram of the utility model.

[0024] Figure 4 yes Figure 2 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0025] like Figures 1 to 4 As shown, the electronic water pump with filtering function for a vehicle of the present invention includes a water pump volute 1, which is downwardly connected to a housing 2, and an inner cavity formed by the water pump volute 1 and the housing 2. A motor 3 is provided in the inner cavity, and an impeller 4 is installed at the output end of the motor 3. The impeller 4 is located in the water pump volute 1, and an inlet pipe 5 is axially upwardly provided in the water pump volute 1. A water outlet pipe 6 is tangentially connected to the water pump volute 1, and a filter cartridge 7 with an open top is embedded at the pipe mouth of the water inlet pipe 5. A fitting surface 8 is radially extended at the top end of the filter cartridge 7, and the fitting surface 8 is fitted downwardly with the top end surface of the water inlet pipe 5;

[0026] An annular positioning seal strip 9 extends downward from the mating surface 8. Its vertical cross-section is tapered, with a larger top and smaller bottom. The upper end surface of the water inlet pipe 5 is recessed with a positioning seal groove that mates with the positioning seal strip 9. The positioning seal strip 9 fits into the groove and forms a tight press fit. In the figure, the positioning seal groove and the positioning seal strip 9 occupy the same space; therefore, the positioning seal groove is not given a separate reference numeral.

[0027] The positioning seal strip 9 of the contact surface 8 is embedded in the positioning seal groove. This not only increases the mating area between the contact surface 8 and the end face of the water inlet pipe 5, but also ensures a tight seal between the positioning seal strip 9 and the positioning seal groove. The filter cartridge 7 is fitted into the water inlet pipe 5, making it easy to disassemble.

[0028] The fitting surface 8 radially extends out of the outer wall of the water inlet pipe 5 and forms a suspended portion 10 , which is used as a handle for disassembling the filter cartridge 7 .

[0029] The suspended portion 10 facilitates application of axial pulling force to the filter cartridge 7 when the filter cartridge 7 is disassembled, thereby making it easier to disassemble the filter cartridge 7 .

[0030] The housing 2 is provided with a mounting groove 11 downwardly, and a PCB control board 12 is provided in the mounting groove 11. The PCB control board 12 is connected to the motor 3 via a circuit. The PCB control board 12 is connected to a connector 13 via a circuit. The connector 13 is located outside the mounting groove 11 and is used to connect to the vehicle circuit; a potting layer 14 is provided in the mounting groove 11 below the PCB control board 12, and a back cover 15 is connected to the mounting groove 11 below the potting layer 14.

[0031] Connector 13 facilitates connection of the present invention to the vehicle's ECU via the vehicle's onboard circuitry, allowing it to be controlled by the ECU. Potting layer 14 provides insulation, waterproofing, and moisture-proofing for PCB control board 12. Back cover 15 provides physical protection for PCB control board 12.

[0032] An ultrasonic vibrator 16 is embedded in the water inlet pipe 5 at the filter cartridge 7 (it can be buried in the pipe wall of the water inlet pipe 5 or embedded in the pipe wall of the water inlet pipe 5 with an exposed portion), and the ultrasonic vibrator 16 is connected to the PCB control board 12 through a circuit.

[0033] The vehicle ECU controls the on and off of the ultrasonic vibrator. The ultrasonic vibrator has the following technical functions:

[0034] ① High-frequency vibration reduces the accumulation of impurities and particles on the filter cartridge 7, slowing down the clogging process. ② Partially removes impurities and particles that become embedded in the filter cartridge 7 when it intercepts foreign matter in the water, slowing down the clogging process. ③ Extends the life of the filter cartridge 7, reducing the frequency of filter cartridge replacement.

[0035] During use, the present invention is installed on a motor vehicle near the engine and connected in series via a water inlet pipe 5 and a water outlet pipe 6 to the engine's cooling system. The cooling system includes a radiator. An electronic water pump extracts water cooled by the radiator and delivers it to the engine. As the water flows through the engine, it cools the engine, simultaneously increasing the water temperature. The heated water flows to the radiator, where it releases heat and cools down before being pumped out again by the electronic water pump, completing the cooling water cycle. During operation, if the ultrasonic vibrator 16 is turned on, high-frequency vibration can be used to mitigate clogging of the filter cartridge 7. After extended use, the filter cartridge 7 may become clogged or exhibit excessive filtration resistance. When the motor vehicle is stopped, the suspended portion 10 can be used as a handle to conveniently remove the filter cartridge 7 from the water inlet pipe 5. A new filter cartridge 7 can then be inserted back into the water inlet pipe 5, with the positioning seal 9 inserted into the positioning seal groove and tightened. This makes removal and replacement very convenient and quick.

[0036] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An electronic water pump for a vehicle with a filtering function, comprising a water pump volute, the water pump volute being downwardly connected to a housing, a motor being disposed in an inner cavity formed by the water pump volute and the housing, an impeller being mounted at the output end of the motor, the impeller being located within the water pump volute, a water inlet pipe being axially upwardly disposed in the water pump volute, and a water outlet pipe being tangentially connected to the water pump volute, characterized in that: A filter cartridge with an open top is embedded in the orifice of the water inlet pipe. A fitting surface is radially extended from the top of the filter cartridge, and the fitting surface fits downward with the top end surface of the water inlet pipe. An annular positioning sealing strip is provided downward on the fitting surface, and the vertical cross-section of the positioning sealing strip is a cone with a larger top and a smaller bottom; the upper end surface of the water inlet pipe is recessed with a positioning sealing groove that is compatible with the positioning sealing strip, and the positioning sealing strip is embedded in the positioning sealing groove and forms a tight fit with the positioning sealing groove.

2. The vehicle electronic water pump with filtering function according to claim 1, characterized in that: The fitting surface radially extends out of the outer wall of the water inlet pipe and forms a suspended portion, which is used as a handle for disassembling the filter cartridge.

3. The vehicle electronic water pump with filtering function according to claim 1, characterized in that: A mounting groove is provided at the bottom of the shell, and a PCB control board is provided in the mounting groove. The PCB control board is connected to the motor through a line. The PCB control board is connected to a connector through the line. The connector is located outside the mounting groove and is used to connect to the vehicle circuit; a potting glue layer is provided in the mounting groove below the PCB control board, and the mounting groove below the potting glue layer is connected to the back cover.

4. The vehicle electronic water pump with filtering function according to claim 3, characterized in that: An ultrasonic vibrator is embedded in the water inlet pipe at the filter cartridge, and the ultrasonic vibrator is connected to the PCB control board through a circuit.

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