Semi-open type electronic small water pump structure

Abstract

The utility model relates to an electronic water pump structure. A semi-open type electronic small water pump structure comprises a volute and an impeller rotor component, the impeller rotor component comprises an impeller assembly and a rotor assembly, the impeller assembly comprises a front cover plate, a rear cover plate and blades located between the front cover plate and the rear cover plate, the impeller assembly is integrally formed, the front cover plate is parallel to the rear cover plate, the front cover plate is a plane, and the rotor assembly is a plane. And the volute is connected outside the impeller assembly in a covering manner. The utility model provides a semi-open type electronic small water pump structure which is simple in structure, convenient to form, high in efficiency, high in strength and strong in anti-blocking capacity. The technical problems that in the prior art, an impeller rotor of an electronic water pump is complex in structure and insufficient in efficiency and strength are solved.

Description

Technical Field

[0001] This utility model relates to an electronic water pump structure, and more particularly to a semi-open electronic small water pump structure. Background Technology

[0002] Automotive electronic water pumps are commonly used in many new energy vehicles, RVs, and other special vehicles as miniature water pumps for water circulation, cooling, or onboard water supply systems. These miniature self-priming water pumps are collectively referred to as automotive water pumps. The circular motion of the motor causes the diaphragm inside the pump to reciprocate through a mechanical device, thereby compressing and stretching the air inside the pump chamber. Under the action of a one-way valve, positive pressure is created at the drain outlet, and a vacuum is created at the inlet, thus generating a pressure difference with the external atmospheric pressure. Under the action of this pressure difference, water is forced into the inlet and then discharged from the drain outlet. Under the action of the kinetic energy transmitted by the motor, water is continuously drawn in and discharged, forming a relatively stable flow rate.

[0003] Automotive electric water pumps typically use closed impellers and a small number of semi-open impellers. Closed impellers consist of front and rear cover plates and blades, and have the advantages of high efficiency and high strength. The disadvantage is that the structure is complex and generally needs to be made into two parts and then welded together. Semi-open impellers consist of a rear cover plate and blades, and have the advantages of easy manufacturing and strong anti-clogging ability. The disadvantage is that the volume loss at the upper cover plate is relatively large and the efficiency is low. Summary of the Invention

[0004] This utility model provides a semi-open electronic water pump structure that is simple in structure, easy to form, highly efficient, high in strength, and has strong anti-clogging ability; it solves the technical problems of complex impeller rotor structure, insufficient efficiency and strength of existing electronic water pumps.

[0005] The above-mentioned technical problem of this utility model is solved by the following technical solution: A semi-open electronic small water pump structure includes a volute and an impeller rotor assembly. The impeller rotor assembly includes an impeller assembly and a rotor assembly. The impeller assembly includes a front cover plate, a rear cover plate, and blades located between the front and rear cover plates. The impeller assembly is integrally formed. The front cover plate is parallel to the rear cover plate and is planar. The volute covers the outside of the impeller assembly. The front cover plate is formed as a planar surface, and the impeller is formed between the front and rear cover plates. Since the front cover plate is only a planar surface, it can be directly demolded axially, while the other blade parts can be demolded by using circumferential sliders. Therefore, the impeller assembly can be formed in one step, simplifying the process. The impeller assembly with the front cover plate has the advantages of the original closed impeller, namely high efficiency and high strength, but with a simple structure. Therefore, the overall structure has better dimensional accuracy and structural strength.

[0006] Preferably, the volute includes a water inlet pipe body, which is coaxial with the rotor shaft. The end of the water inlet pipe body is formed with an annular protrusion that extends into the front cover plate.

[0007] Preferably, the front and rear cover plates are annular, and the convex ring facing the rotor has an arc-shaped guide surface, with the convex ring abutting against the inner annular surface of the front cover plate. The convex ring extends into the front cover plate and is formed into an arc-shaped surface, which guides the water flow while forming the inlet flow channel, thereby improving efficiency.

[0008] Preferably, the end of the water inlet pipe is formed with a volute cover plate, which is parallel to the front cover plate, with a gap between them. This prevents large liquid backflow from the high-pressure area at the impeller outlet to the low-pressure area at the impeller inlet, thus avoiding significant volumetric losses and reduced efficiency.

[0009] Preferably, the impeller assembly and the rotor assembly are integrally formed.

[0010] Therefore, the semi-open electronic mini water pump structure of this utility model has the following advantages: the impeller assembly structure is easy to manufacture, can be integrally molded, and is easy to demold, resulting in better dimensional accuracy and structural strength of the impeller rotor structure. At the same time, this structure's impeller assembly has strong anti-clogging capabilities. The protrusion formed on the worm gear housing can form a flow channel together with the impeller, providing good fluid guidance. Furthermore, the gap between the worm gear cover plate and the front cover plate improves impeller efficiency. Attached Figure Description

[0011] Figure 1 This is a 3D diagram of a semi-open electronic water pump structure.

[0012] Figure 2 yes Figure 1 A sectional view.

[0013] Figure 3 yes Figure 2 A magnified view of point A.

[0014] Figure 4 yes Figure 1 A perspective view of the impeller rotor component. Detailed Implementation

[0015] The technical solution of the utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0016] Example:

[0017] like Figure 1 and 2As shown in Figures 3 and 4, a semi-open electronic mini water pump structure includes a volute 1 and an impeller rotor assembly. The impeller rotor assembly includes an impeller assembly and a rotor assembly 6, which are integrally formed.

[0018] The impeller assembly includes a one-piece molded front cover plate 4, a rear cover plate 5, and blades 9. Blades 9 are located between the front cover plate 4 and the rear cover plate 5, which are parallel to each other. Both the front cover plate 4 and the rear cover plate 5 are annular.

[0019] The volute 1 includes a water inlet pipe body 2, which is coaxial with the rotor shaft. An annular protruding ring 8 is formed at the end of the water inlet pipe body 2. The protruding ring 8 has an arc-shaped guide surface formed on the side facing the rotor. The protruding ring 8 extends into the front cover plate 4 and abuts against the inner annular surface of the front cover plate 4. The protruding ring 8 provides a guiding function for the water flow.

[0020] The end of the inlet pipe body 2 is formed with a volute cover plate 3, which is parallel to the front cover plate 4, with a gap 7 between the front cover plate 4 and the volute cover plate 3. This prevents large liquid backflow from the high-pressure area at the impeller outlet to the low-pressure area at the impeller inlet, which would cause large volumetric losses and affect efficiency.

[0021] The specific embodiments described herein are merely illustrative of the concept of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A semi-open electronic mini water pump structure, comprising a volute casing and an impeller rotor assembly, characterized in that: The impeller rotor component includes an impeller assembly and a rotor assembly. The impeller assembly includes a front cover plate, a rear cover plate, and blades located between the front and rear cover plates. The impeller assembly is integrally formed. The front cover plate is parallel to the rear cover plate and is planar. The volute is attached to the outside of the impeller assembly.

2. The semi-open electronic mini water pump structure according to claim 1, characterized in that: The volute includes a water inlet pipe body, which is coaxial with the rotor shaft. The end of the water inlet pipe body is formed with an annular protrusion that extends into the front cover plate.

3. The semi-open electronic mini water pump structure according to claim 2, characterized in that: The front cover and the rear cover are annular, and the convex ring has an arc-shaped guide surface formed on the side facing the rotor. The convex ring abuts against the inner ring surface of the front cover.

4. The semi-open electronic mini water pump structure according to claim 2, characterized in that: The end of the water inlet pipe body is formed with a volute cover plate, which is parallel to the front cover plate, and a gap is left between the front cover plate and the volute cover plate.

5. A semi-open electronic mini water pump structure according to any one of claims 1 to 4, characterized in that: The impeller assembly and rotor assembly are integrally formed.

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