Water suction chamber structure of electronic water pump

Abstract

The utility model relates to a water suction chamber structure of an electronic water pump. The water suction chamber comprises at least one water suction chamber water inlet, and the water suction chamber is further provided with a water suction chamber outlet. The pumping chamber comprises a pumping chamber inlet and a pumping chamber outlet, and the pumping chamber outlet is in butt joint with an impeller of the electronic water pump; the radial size of the water suction chamber outlet is larger than that of the water pumping chamber inlet, and the water suction chamber outlet and the water pumping chamber inlet are connected through a buffer section. The water suction chamber structure is provided with inlets with different pipe diameters, so that the whole structure of the pump is compact, and the requirements of different liquid flow directions and the cavitation requirement of the water pump are met.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic water pumps, in particular to a water suction chamber structure of an electronic water pump. Background Art

[0002] In order to achieve the best performance of the water pump, the liquid velocity distribution at the impeller inlet should be as uniform as possible and the velocity should be appropriate. The function of the suction chamber is to ensure that the velocity field at the impeller inlet meets the requirements. The current water pump suction chamber designs include straight cone, annular, quasi-spiral and semi-spiral types.

[0003] However, the above-mentioned water pump suction chamber design is only applicable to water pumps with only one water inlet. When a tee pipe with two different pipe diameters needs to be installed at the water pump inlet, the existing suction chamber design will no longer be applicable. In addition, most of the existing tee suction chambers have a 90-degree bend, and the local negative pressure at the bend is large, which causes serious vaporization of the liquid before the impeller inlet, thereby causing the problem of cavitation in the water pump. Summary of the invention

[0004] To this end, the utility model provides a water suction chamber structure of an electronic water pump, which is arranged with inlets of different pipe diameters, so that the overall structure of the pump is compact and meets the requirements of different liquid flow directions and cavitation requirements of the water pump.

[0005] In order to solve the above technical problems, the utility model provides a water suction chamber structure of an electronic water pump, comprising:

[0006] A water absorption chamber, comprising at least one water absorption chamber water inlet, wherein the water absorption chamber is also provided with a water absorption chamber outlet;

[0007] A water pressure chamber, comprising a water pressure chamber inlet and a water pressure chamber outlet, wherein the water pressure chamber outlet is connected to an impeller of an electronic water pump;

[0008] Wherein, the radial dimension of the water absorption chamber outlet is greater than the radial dimension of the water pressure chamber inlet, and the two are connected by setting a buffer section.

[0009] In one implementation of the utility model, the water absorption chamber outlet and the water pressure chamber inlet are both cylindrical.

[0010] In one implementation of the present utility model, the water absorption chamber outlet and the water pressure chamber inlet are coaxially arranged.

[0011] In one embodiment of the utility model, the water inlet of the water suction chamber includes a main water inlet of a water pump and an auxiliary water inlet of a water pump.

[0012] In one implementation of the utility model, the main water inlet of the water pump and the auxiliary water inlet of the water pump are both cylindrical.

[0013] In one embodiment of the present utility model, the main water inlet of the water pump and the auxiliary water inlet of the water pump are coaxially arranged, and the axes of the two are perpendicular to the axis of the water inlet of the water suction chamber.

[0014] In one embodiment of the utility model, the buffer section includes a volute inlet section and a water inlet section which are sequentially arranged and connected along the direction from the water suction chamber outlet to the water pressure chamber inlet, and the radial cross-sections of the volute inlet section and the water inlet section are both arc-shaped.

[0015] In one embodiment of the utility model, the arc-shaped concave side of the volute inlet section is close to the water suction chamber, and the arc-shaped convex side of the water inlet section is close to the water suction chamber.

[0016] In one embodiment of the present invention, the diameter of the volute inlet section is the same as the diameter of the water inlet section.

[0017] In one implementation of the utility model, an annular groove is provided on the inner wall of the water pressure chamber beside the inlet of the water pressure chamber.

[0018] The above technical solution of the utility model has the following advantages compared with the prior art:

[0019] The utility model discloses a water suction chamber structure of an electronic water pump, wherein the water suction chamber structure is arranged with inlets of different pipe diameters, so that the overall structure of the pump is compact and meets the requirements of different liquid flow directions and the cavitation requirements of the water pump.

[0020] The radial dimension of the outlet of the water suction chamber of the utility model is larger than the radial dimension of the inlet of the water pressure chamber. By setting a buffer section for connection, the local negative pressure problem caused by the traditional 90-degree elbow design is effectively avoided, and the liquid velocity distribution is uniform. The buffer arc design of the volute inlet section and the water inlet section ensures the stability of the direction of the liquid velocity field before the impeller inlet and improves the performance of the water pump.

[0021] The water inlet of the water suction chamber of the utility model includes a main water inlet of the water pump and an auxiliary water inlet of the water pump, both of which are cylindrical and coaxially arranged, and the axis is arranged perpendicular to the axis of the water inlet of the water suction chamber, which can meet the needs of different liquid flow directions. Such a design not only improves the adaptability of the water pump, but also ensures the stability of the water flow.

[0022] The buffer section of the utility model includes a volute inlet section and a water inlet section, and the radial cross-section is arc-shaped (circular arc), which effectively avoids the water hammer effect before the impeller inlet and ensures the stability of the impeller inlet velocity field direction, thereby improving the operation efficiency of the water pump. The design of the volute inlet section and the water inlet section optimizes the liquid flow path and reduces energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0024] Figure 1 It is a structural diagram of the water suction chamber structure of the electronic water pump of the utility model.

[0025] Figure 2 yes Figure 1 Cross-sectional view along the AA direction.

[0026] Figure 3 It is an axial half-section structural diagram of the water absorption chamber of the utility model.

[0027] Description of the Figures in the Specification:

[0028] 1. Suction chamber; 2. Pressure chamber; 3. Main water inlet of the water pump; 4. Auxiliary water inlet of the water pump; 5. Suction chamber outlet; 6. Pressure chamber inlet; 7. Volute inlet section; 8. Water inlet section. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0030] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0031] In the present utility model, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present utility model, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0033] Reference Figures 1 to 3 As shown, the water suction chamber structure of an electronic water pump of the utility model comprises:

[0034] The water absorption chamber 1 comprises at least one water absorption chamber 1 water inlet, and the water absorption chamber 1 is also provided with a water absorption chamber outlet 5;

[0035] The water pressure chamber 2 comprises a water pressure chamber 2 inlet and a water pressure chamber 2 outlet, wherein the water pressure chamber 2 outlet is connected to the impeller of the electronic water pump;

[0036] The radial dimension of the water absorption chamber outlet 5 is larger than the radial dimension of the water pressure chamber 2 inlet, and the two are connected by setting a buffer section.

[0037] The traditional three-way pipe water suction chamber 1 design has the problem of serious liquid vaporization at the impeller inlet. The utility model significantly reduces the local negative pressure value by optimizing the connection structure between the water suction chamber 1 and the water pressure chamber 2, thereby reducing the occurrence of water pump cavitation.

[0038] In one embodiment, the water absorption chamber outlet 5 and the water pressure chamber inlet 2 are both cylindrical.

[0039] Specifically, the water absorption chamber outlet 5 and the water pressure chamber inlet 2 are coaxially arranged.

[0040] The outlet 5 of the suction chamber and the inlet of the pressure chamber 2 are coaxially arranged, thereby avoiding the cavitation problem caused by sharp turns and improving the reliability and life of the water pump.

[0041] In one embodiment, the water inlet of the water suction chamber 1 includes a main water inlet 3 and an auxiliary water inlet 4. By arranging inlets with different pipe diameters, the overall structure of the pump is compact and meets the requirements of different liquid flow directions and cavitation requirements of the water pump.

[0042] By arranging the water absorption chamber 1 and the water pressure chamber 2 with inlets of different pipe diameters, the overall structure is compact and the occupied space is reduced. This structure can adapt to more complex installation environments and improve space utilization.

[0043] Specifically, the main water inlet 3 of the water pump and the auxiliary water inlet 4 of the water pump are both cylindrical.

[0044] Specifically, the main water inlet 3 of the water pump and the auxiliary water inlet 4 of the water pump are coaxially arranged, and the axes of the two are arranged perpendicularly to the axis of the water inlet of the water suction chamber 1. This can meet the needs of different liquid flow directions. Such a design not only improves the adaptability of the water pump, but also ensures the stability of the water flow.

[0045] In one embodiment, the buffer section includes a volute inlet section 7 and a water inlet section 8 which are sequentially arranged and connected along the direction from the water suction chamber outlet 5 to the water pressure chamber 2 inlet, and the radial cross-sections of the volute inlet section 7 and the water inlet section 8 are both arc-shaped (circular arc).

[0046] It should be understood that the volute inlet section 7 and the water inlet section 8 are both annular, and the radial cross section is a plane perpendicular to the plane where the ring body is located.

[0047] The radial dimension of the water suction chamber outlet 5 is larger than the radial dimension of the water pressure chamber 2 inlet. The buffer section is set for connection, which effectively avoids the local negative pressure problem caused by the traditional 90-degree elbow design and evens out the liquid velocity distribution. The buffer arc design of the volute inlet section 7 and the water inlet section 8 ensures the stability of the liquid velocity field direction before the impeller inlet and improves the performance of the water pump.

[0048] In one embodiment, the arc-shaped concave side of the volute inlet section 7 is close to the water suction chamber 1 , and the arc-shaped convex side of the water inlet section 8 is close to the water suction chamber 1 .

[0049] Specifically, the diameter of the volute inlet section 7 is the same as the diameter of the water inlet section 8 .

[0050] In one embodiment, an inner wall of the water pressure chamber 2 is provided with an annular groove beside the inlet of the water pressure chamber 2 .

[0051] During operation, the liquid in the main water inlet 3 or the auxiliary water inlet 4 of the water pump enters the water suction chamber 1, and then enters the impeller after passing through the water pressure chamber inlet 6. Since the diameter of the water suction chamber outlet 5 is larger than the diameter of the water pressure chamber inlet 6, a low local negative pressure value is avoided. The buffering curvature of the volute inlet section 7 and the buffering curvature of the water inlet section 8 avoids water hammer in front of the impeller inlet and ensures the direction of the velocity field at the impeller inlet.

[0052] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A water suction chamber structure of an electronic water pump, characterized in that: include: A water absorption chamber (1), comprising at least one water absorption chamber (1) water inlet, the water absorption chamber (1) also being provided with a water absorption chamber outlet (5); A water pressure chamber (2), comprising a water pressure chamber (2) inlet and a water pressure chamber (2) outlet, wherein the water pressure chamber (2) outlet is connected to an impeller of an electronic water pump; The radial dimension of the water absorption chamber outlet (5) is greater than the radial dimension of the water pressure chamber inlet (2), and the two are connected by providing a buffer section.

2. The water absorption chamber structure of an electronic water pump according to claim 1, characterized in that: The water absorption chamber outlet (5) and the water pressure chamber inlet (2) are both cylindrical.

3. The water absorption chamber structure of an electronic water pump according to claim 2, characterized in that: The water absorption chamber outlet (5) and the water pressure chamber inlet (2) are coaxially arranged.

4. The water absorption chamber structure of an electronic water pump according to claim 3, characterized in that: The water inlet of the water absorption chamber (1) comprises a main water inlet (3) of the water pump and an auxiliary water inlet (4) of the water pump.

5. The water absorption chamber structure of an electronic water pump according to claim 4, characterized in that: The water pump main water inlet (3) and the water pump auxiliary water inlet (4) are both cylindrical.

6. The water absorption chamber structure of an electronic water pump according to claim 5, characterized in that: The main water inlet (3) of the water pump and the auxiliary water inlet (4) of the water pump are coaxially arranged, and the axes of the two are arranged perpendicular to the axis of the water inlet of the water suction chamber (1).

7. The water absorption chamber structure of an electronic water pump according to claim 1, characterized in that: The buffer section comprises a volute inlet section (7) and a water inlet section (8) which are arranged in sequence and connected along the direction from the water suction chamber outlet (5) to the water pressure chamber (2) inlet, and the radial cross-sections of the volute inlet section (7) and the water inlet section (8) are both arc-shaped.

8. The water absorption chamber structure of an electronic water pump according to claim 7, characterized in that: The arc-shaped concave side of the volute inlet section (7) is close to the water suction chamber (1), and the arc-shaped convex side of the water inlet section (8) is close to the water suction chamber (1).

9. The water absorption chamber structure of an electronic water pump according to claim 8, characterized in that: The diameter of the volute inlet section (7) is the same as the diameter of the water inlet section (8).

10. The water absorption chamber structure of an electronic water pump according to claim 1, characterized in that: An annular groove is provided on the inner wall of the water pressure chamber (2) beside the inlet of the water pressure chamber (2).

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