Electronic water pump with shock-absorbing and noise-reducing structure

Abstract

The application relates to the technical field of electronic water pumps, in particular to an electronic water pump with a damping and noise reduction structure, which comprises a water pump shell, a pump cover, a rotor assembly and a stator assembly, the rotor assembly is connected with the stator assembly in a matched mode, a damping mechanism capable of reducing vibration is arranged outside the stator assembly, the damping mechanism comprises a damping sleeve connected with the stator assembly and a damping frame connected with the damping sleeve, a noise reduction member capable of reducing noise is arranged on the inner wall of the water pump shell, and the noise reduction member is connected with the damping frame. The application provides the electronic water pump with the damping and noise reduction structure, the damping mechanism and the noise reduction member are arranged between the water pump shell and the stator assembly, direct contact between the water pump shell and the stator assembly is avoided, vibration and noise generated by the stator assembly during water pump operation can be reduced, and the influence on the working environment of the water pump is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of electronic water pump technology, specifically to an electronic water pump with a vibration reduction and noise reduction structure. Background Technology

[0002] With advancements in technology and increasing demands for equipment performance, electric water pumps have found widespread application in various fields, such as household appliances, industrial cooling systems, and automotive cooling systems. However, despite their advantages of high efficiency and long lifespan, noise remains a significant factor affecting user experience. In electric water pumps, when the permanent magnets on the rotor pass through the slots of the stator core, the magnetic field distribution changes, resulting in periodic torque fluctuations, known as cogging torque. These torque fluctuations cause motor vibration, which is transmitted throughout the pump body via the mechanical structure, generating operating noise and thus affecting the pump's working environment. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention proposes an electronic water pump with a vibration damping and noise reduction structure.

[0004] The technical problem to be solved by this invention is achieved by the following technical solution:

[0005] An electronic water pump with a vibration damping and noise reduction structure includes a water pump housing, a pump cover, a rotor assembly, and a stator assembly. The rotor assembly is connected to the stator assembly. The stator assembly is provided with a vibration damping mechanism on its exterior to reduce vibration. The vibration damping mechanism includes a vibration damping kit connected to the stator assembly and a vibration damping frame connected to the vibration damping kit. The inner wall of the water pump housing is provided with a noise reduction component to reduce noise, and the noise reduction component is connected to the vibration damping frame.

[0006] As a further improvement of the present invention, the shock-absorbing kit includes a shock-absorbing ring sleeve connected to the outside of the stator assembly, and two limiting ring plates located on the upper and lower sides of the shock-absorbing ring sleeve and in contact with the upper and lower end faces of the stator assembly. The shock-absorbing ring sleeve is circumferentially rotatably mounted on the shock-absorbing frame.

[0007] As a further improvement of the present invention, a number of built-in grooves are evenly distributed along the circumferential direction on both the upper and lower end faces of the shock-absorbing ring sleeve, and a number of connecting springs are correspondingly arranged in the number of built-in grooves. The two limiting ring plates are connected to the number of connecting springs.

[0008] As a further improvement of the present invention, a plurality of limiting grooves are distributed circumferentially on the outer sleeve surface of the shock-absorbing ring sleeve, and the arrangement direction of the plurality of limiting grooves is perpendicular to the tangential direction of the shock-absorbing ring sleeve.

[0009] The beneficial effects of this invention are:

[0010] This invention provides an electronic water pump with a vibration damping and noise reduction structure. By setting a vibration damping mechanism and a noise reduction component between the water pump housing and the stator assembly, direct contact between the water pump housing and the stator assembly is avoided. This can reduce the vibration and noise generated by the stator assembly during the operation of the water pump, effectively reducing the impact on the working environment of the water pump. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0012] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0013] Figure 2 This is a schematic diagram of the water pump housing in this invention;

[0014] Figure 3 This is a three-dimensional schematic diagram of the internal structure of the water pump housing in this invention;

[0015] Figure 4 This is a front sectional view of the internal structure of the water pump housing in this invention;

[0016] Figure 5 This is a top sectional view of the internal structure of the water pump housing in this invention;

[0017] Figure 6 This is a schematic diagram of the shock absorption kit structure in this invention;

[0018] Figure 7 This is a schematic diagram of the shock absorber frame structure in this invention;

[0019] Figure 8 This is a schematic diagram of the noise reduction component structure in this invention;

[0020] In the diagram: 1. Pump housing; 2. Pump cover; 3. Rotor assembly; 4. Stator assembly; 5. Guide mounting groove; 6. Vibration damping kit; 61. Vibration damping ring; 611. Internal groove; 612. Limiting groove; 62. Limiting ring plate; 63. Connecting spring; 64. Outer support ring edge; 641. Smooth ring bar; 7. Vibration damping frame; 71. Round hole; 72. Vibration damping boss; 721. Vibration damping spring; 73. Vibration damping connecting rod; 74. Smooth ring groove; 8. Noise reduction component; 81. Sound absorbing pad; 82. Sound insulation board; 821. Positioning mounting bar. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figures 1 to 8As shown, an electronic water pump with a vibration damping and noise reduction structure includes a pump housing 1, a pump cover 2, a rotor assembly 3, and a stator assembly 4. The rotor assembly 3 is connected to the stator assembly 4. The stator assembly 4 is provided with a vibration damping mechanism on its exterior to reduce vibration. The vibration damping mechanism includes a vibration damping kit 6 connected to the stator assembly 4 and a vibration damping frame 7 connected to the vibration damping kit 6. The inner wall of the pump housing 1 is provided with a noise reduction component 8 to reduce noise, and the noise reduction component 8 is connected to the vibration damping frame 7.

[0023] As a further improvement of this embodiment, the damping kit 6 includes a damping ring sleeve 61 externally connected to the stator assembly 4, and two limiting ring plates 62 located on the upper and lower sides of the damping ring sleeve 61 and in contact with the upper and lower end faces of the stator assembly 4. The damping ring sleeve 61 is circumferentially rotatably mounted on the damping frame 7. Several internal grooves 611 are evenly distributed along the circumferential direction on both the upper and lower end faces of the damping ring sleeve 61, and several connecting springs 63 are correspondingly arranged within the several internal grooves 611. The two limiting ring plates 62 are connected to the several connecting springs 63. Several limiting grooves 612 are distributed along the circumferential direction on the outer sleeve surface of the damping ring sleeve 61, and the arrangement direction of the several limiting grooves 612 is perpendicular to the tangential direction of the damping ring sleeve 61. In this embodiment, eight built-in grooves 611 and eight connecting springs 63 are provided on each of the upper and lower end faces of the shock-absorbing ring sleeve 61; there is a certain distance between the two limiting ring plates 62 and the upper and lower end faces of the shock-absorbing ring sleeve 61, which is used to buffer the limiting ring plates 62 when they are subjected to vibration of the stator assembly 4. Four limiting grooves 612 are provided, and the four limiting grooves 612 are equally distributed on the outer surface of the shock-absorbing ring sleeve 61.

[0024] As a further improvement to this embodiment, a circular hole 71 is provided in the middle of the shock absorber frame 7. The inner diameter of the circular hole 71 is required to be slightly larger than the outer diameter of the shock absorber ring 61. A plurality of shock absorber protrusions 72 are evenly distributed on the circumferential sidewall of the circular hole 71. A plurality of shock absorber connecting rods 73 are arranged inside the plurality of shock absorber protrusions 72. Each of the shock absorber connecting rods 73 has an L-shaped structure, and the other end of each shock absorber connecting rod 73 is connected to a plurality of limiting grooves 612. A plurality of shock absorber springs 721 are correspondingly arranged inside the plurality of shock absorber protrusions 72, and one end of each shock absorber connecting rod 73 is abutted against and connected to the shock absorber springs 721. In this embodiment, the number of shock absorber protrusions 72, shock absorber springs 721, and shock absorber connecting rods 73 are all four. The arrangement direction of the four shock absorber protrusions 72 is parallel to the tangential direction of the circular hole 71. Through the above design, when the stator assembly 4 experiences tangential vibration due to the cogging torque, the damping spring 721 can buffer the vibration and, together with the damping ring 61, minimize the vibration.

[0025] Furthermore, the upper outer end of the shock-absorbing ring sleeve 61 is provided with an outer support ring edge 64, and the bottom of the outer support ring edge 64 is provided with a smooth ring strip 641. The upper surface of the shock-absorbing frame 7 is provided with a smooth ring groove 74 adapted to the smooth ring strip 641, and the smooth ring strip 641 is installed in the smooth ring groove 74. Through the smooth ring strip 641 and the smooth ring groove 74, guidance is provided for the shock-absorbing ring sleeve 61 to rotate circumferentially due to the circumferential vibration of the motor.

[0026] Furthermore, the noise reduction component 8 has a ring-shaped structure and is composed of a sound-absorbing pad 81 and a sound-insulating plate 82 that are sequentially attached and connected together. The sound-absorbing pad 81 is connected to the vibration damping frame 7, and the sound-insulating plate 82 is connected to the inner wall of the water pump housing 1. The sound-absorbing pad 81 can absorb the noise generated by the vibration of the motor. The sound-insulating plate 82 can further isolate the noise generated by the vibration of the motor outward.

[0027] As a further improvement of the present invention, the inner wall of the water pump housing 1 is provided with a plurality of guide mounting grooves 5, and the outer wall of the sound insulation plate 82 in the noise reduction component 8 is provided with a plurality of positioning mounting strips 821 corresponding to and adapted to the plurality of guide mounting grooves 5. In this embodiment, the number of guide mounting grooves 5 and positioning mounting strips 821 is six. Through the guide mounting grooves 5 and the positioning mounting strips 821, the noise reduction component 8 can be quickly and firmly fixedly installed inside the water pump housing 1.

[0028] Working principle and usage process of this invention:

[0029] During the operation of the electric water pump, when the motor vibrates, the limiting ring plates 62 on the upper and lower sides, together with the connecting springs 63, can buffer it axially, the damping ring sleeve 61 can buffer it radially, and the damping bosses 72, damping connecting rods 73, and damping springs 721 arranged in the tangential direction can buffer it tangentially. Through the above-mentioned multi-directional buffering measures, the vibration transmitted outward by the motor can be effectively reduced. The sound-absorbing pads 81 and sound insulation plates 82 can absorb and isolate the noise generated when the motor vibrates.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely prisms of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An electronic water pump with shock-absorbing and noise-reducing structure, comprising a water pump shell (1), a pump cover (2), a rotor assembly (3), and a stator assembly (4), characterized in that: The rotor assembly (3) is connected with the stator assembly (4), the outer portion of the stator assembly (4) is provided with a damping mechanism capable of reducing vibration, the damping mechanism comprises a damping sleeve (6) connected with the stator assembly (4) and a damping frame (7) connected with the damping sleeve (6), the inner wall of the water pump housing (1) is provided with a noise reduction member (8) capable of reducing noise, and the noise reduction member (8) is connected with the damping frame (7); The damping sleeve (6) comprises a damping ring (61) connected with the outer portion of the stator assembly (4); The upper and lower sides of the damping ring (61) are uniformly distributed with a plurality of built-in grooves (611) in the circumferential direction, a plurality of connecting springs (63) are correspondingly arranged in the plurality of built-in grooves (611), and two limiting ring sheet plates (62) are connected with the plurality of connecting springs (63). The outer side of the damping ring (61) is provided with a plurality of limiting grooves (612) distributed in the circumferential direction. The middle portion of the damping frame (7) is provided with a circular hole (71), a plurality of damping bosses (72) are uniformly distributed on the circumferential side wall of the circular hole (71) in sequence, a plurality of damping connecting rods (73) are arranged in the plurality of damping bosses (72), the plurality of damping connecting rods (73) are in L-shaped structure, and the other ends of the plurality of damping connecting rods (73) are correspondingly connected in the plurality of limiting grooves (612).

2. The electronic water pump with a shock-absorbing and noise-reducing structure according to claim 1, characterized in that: The damping sleeve (6) further comprises two limiting ring sheet plates (62) located on the upper and lower sides of the damping ring (61) and connected with the upper and lower side end faces of the stator assembly (4), and the damping ring (61) is rotatably installed on the damping frame (7) in the circumferential direction.

3. The electronic water pump with a shock-absorbing and noise-reducing structure according to claim 1, characterized in that: The arrangement direction of the plurality of limiting grooves (612) is perpendicular to the tangential direction of the damping ring (61).

4. The electronic water pump with a shock-absorbing and noise-reducing structure according to claim 1, characterized in that: The arrangement direction of the plurality of damping bosses (72) is parallel to the tangential direction of the circular hole (71).

5. The electronic water pump with shock-absorbing and noise-reducing structure according to claim 1, characterized in that: A plurality of damping springs (721) are correspondingly arranged in the plurality of damping bosses (72), and one end of the plurality of damping connecting rods (73) is abuttingly connected with the plurality of damping springs (721).

6. The electronic water pump with a shock-absorbing and noise-reducing structure according to claim 1, characterized in that: The outer side of the damping ring (61) is provided with an outer side supporting ring edge (64), the bottom of the outer side supporting ring edge (64) is provided with a smooth ring strip (641), the upper end face of the damping frame (7) is provided with a smooth ring groove (74) matched with the smooth ring strip (641), and the smooth ring strip (641) is installed in the smooth ring groove (74).

7. The electronic water pump with shock-absorbing and noise-reducing structure according to claim 1, characterized in that: The noise reduction member (8) is in annular structure, and is composed of sound-absorbing pads (81) and sound insulation boards (82) connected together in sequence, the sound-absorbing pads (81) are connected with the damping frame (7), and the sound insulation boards (82) are connected with the inner wall of the water pump housing (1).

8. The electronic water pump with shock-absorbing and noise-reducing structure according to claim 7, characterized in that: The inner wall of the water pump housing (1) is provided with a plurality of guide installation vertical grooves (5), and the outer wall of the sound insulation board (82) in the noise reduction member (8) is provided with a plurality of positioning installation vertical strips (821) correspondingly matched with the plurality of guide installation vertical grooves (5).

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