A high-performance automobile water pump that resists cavitation

Abstract

The invention discloses a high-performance automobile water pump with cavitation resistance, comprising a pump body (1) and a motor (2). The pump body comprises a water inlet pipe (3), a water outlet pipe (4), an impeller (5), and a volute. The impeller comprises a front disc (51), a rear disc (52), and blades (53). A plurality of blades are connected between the front disc and the rear disc. The invention is characterized in that the blades comprise a first blade (531), a second blade (532), and a third blade (533), and are all arc-shaped blades. The length of the first blade is greater than the length of the second blade and greater than the length of the third blade. The first blade has a radius R1, and the arc line of the radius R1 passes through the leading edge endpoint of the second blade and the leading edge endpoint of the third blade. The bending direction of the first blade is opposite to the bending directions of the second and third blades. The invention can effectively improve the cavitation resistance of the automobile water pump, thereby improving the overall hydraulic performance of the water pump.

Description

Technical Field

[0001] The present invention relates to the technical field of electric water pumps for automobiles, and in particular to a high-performance automobile water pump that is resistant to cavitation. Background Art

[0002] like Figure 1-2 As shown, an existing automobile water pump includes a pump body 1 and a motor 2. The pump body 1 includes a water inlet pipe 3, a water outlet pipe 4, an impeller 5, and a volute. The impeller 5 is a centrifugal impeller installed in the volute. The outlet end of the volute is provided with a water outlet pipe 4. The impeller 5 includes a front disc 51, a rear disc 52, blades 53, and a hub 54. Multiple blades 53 are connected between the front disc 51 and the rear disc 52 and are distributed along the circumference. A hub 54 is provided on the radially inner side of the rear disc 52 and is mounted on the rotating shaft of the motor 2. The blades 53 include a first blade, a second blade, and a third blade. All of the blades are arc-shaped and have different lengths. However, the existing automobile water pump has poor cavitation resistance, and its cavitation resistance needs to be further improved. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a high-performance automobile water pump that is resistant to cavitation. Through the design of the first blade, the second blade, the third blade, and the connecting groove, the cavitation resistance of the automobile water pump can be effectively improved, thereby improving the overall hydraulic performance of the water pump.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A high-performance automobile water pump with cavitation resistance comprises a pump body (1) and a motor part (2). The pump body comprises a water inlet pipe (3), a water outlet pipe (4), an impeller (5), and a volute. The impeller is a centrifugal impeller installed in the volute. The outlet pipe is provided at the outlet end of the volute. The impeller comprises a front disc (51), a rear disc (52), blades (53), and a hub (54). A plurality of blades are connected between the front disc and the rear disc, and the plurality of blades are distributed along the circumferential direction. A hub is provided on the radial inner side of the rear disc, and the hub is installed on the rotating shaft of the motor part. The invention is characterized in that the blades (53) comprise a first blade (531), a second blade (532), and a third blade (533), and all of them are arc-shaped blades. The length of the first blade is greater than the length of the second blade and greater than the length of the third blade. The first blade has a radius R1. The arc line of the radius R1 passes through the leading edge end point of the second blade and the leading edge end point of the third blade. The bending direction of the first blade is opposite to the bending directions of the second blade and the third blade.

[0006] Furthermore, the second blade (532) has a radius R2, and the third blade (533) has a radius R3, R1 = (2.6-3.2) R2, and R3 = (0.8-1.2) R2.

[0007] Furthermore, the first blade (531) has a thickness t, and the thickness t has at least three different thickness values ​​from the radial inside to the radial outside, and the thickness t gradually increases from the radial inside to the radial outside.

[0008] Furthermore, the second blade (532) has a thickness T, the third blade (533) has a thickness T, the thickness T is approximately constant, and the maximum value (t max ) is equal to the thickness T.

[0009] Furthermore, on the arc line of radius R1, the circumferential gap between the first blade (531) and the second blade (532) is 0.6-1.0 times the circumferential gap between the second blade and the third blade (533).

[0010] Furthermore, the outer diameter of the first blade (531) is smaller than the outer diameter of the second blade (532) or the third blade (533), and the outer diameters of the second blade (532) and the third blade (533) are equal to the outer diameter of the rear disc (52).

[0011] Furthermore, for the arc-shaped leading edge, the middle endpoint of the arc of the leading edge of the second blade (532) and the middle endpoint of the arc of the leading edge of the third blade (533) are located on the arc line of radius R1; for the straight leading edge, the endpoint upstream of the straight line of the leading edge of the second blade (532) and the endpoint upstream of the straight line of the leading edge of the third blade (533) are located on the arc line of radius R1.

[0012] Furthermore, in a cross-sectional view through the axis, i.e., an axial cross-sectional view, one or more connecting grooves (534) are provided on the second blade (532), and the connecting grooves connect the positive pressure surface and the negative pressure surface of the second blade, and the connecting grooves allow part of the liquid to flow from the positive pressure surface to the negative pressure surface.

[0013] Furthermore, the communication groove (534) is rectangular and extends axially, and a plurality of communication grooves are arranged in parallel, and the aspect ratio of the rectangle is (3-6):1.

[0014] The present invention provides a high-performance automobile water pump with anti-cavitation properties. The design of the first blade, the second blade, the third blade, and the connecting groove can effectively improve the anti-cavitation performance of the automobile water pump, thereby improving the overall hydraulic performance of the water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the appearance and structure of a conventional automobile water pump;

[0016] Figure 2 It is a schematic diagram of the impeller structure of a conventional automobile water pump;

[0017] Figure 3 This is a schematic diagram of the impeller structure of the cavitation-resistant high-performance automobile water pump of the present invention;

[0018] Figure 4 This is a schematic diagram of a partially enlarged structure of the impeller of the cavitation-resistant high-performance automobile water pump of the present invention;

[0019] Figure 5 This is a schematic diagram of the second blade structure of the present invention.

[0020] In the figure: pump body 1, motor part 2, water inlet pipe 3, water outlet pipe 4, impeller 5, front disc 51, rear disc 52, blades 53, hub 54, first blade 531, second blade 532, third blade 533, connecting groove 534, water flow direction F. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] The present invention will be described in further detail below with reference to the accompanying drawings.

[0023] like Figure 1-5 As shown, a high-performance automobile water pump with anti-cavitation performance includes a pump body 1 and a motor part 2. The pump body 1 includes a water inlet pipe 3, a water outlet pipe 4, an impeller 5, and a volute. The impeller 5 is a centrifugal impeller. The impeller 5 is installed in the volute. The outlet end of the volute is provided with a water outlet pipe 4. The impeller 5 includes a front disc 51, a rear disc 52, blades 53, and a hub 54. A plurality of blades 53 are connected between the front disc 51 and the rear disc 52. The plurality of blades 53 are distributed along the circumferential direction. A hub 54 is provided on the radial inner side of the rear disc 52. The hub 54 is installed on the rotating shaft of the motor part 2. It is characterized in that: the blades 53 include the first There are a blade 531, a second blade 532, and a third blade 533, all of which are arc-shaped blades. The length of the first blade 531 is greater than the length of the second blade 532 and the length of the third blade 533. The first blade 531 has a radius R1, and the arc line of the radius R1 passes through the leading edge end point of the second blade 532 and the leading edge end point of the third blade 533 (that is, the leading edge end point of the second blade 532 and the leading edge end point of the third blade 533 are located on the arc line of the radius R1). The bending direction of the first blade 531 is opposite to the bending directions of the second blade 532 and the third blade 533.

[0024] For the arc-shaped leading edge, that is, the middle endpoint of the arc of the leading edge of the second blade 532 and the middle endpoint of the arc of the leading edge of the third blade 533 are located on the arc line of radius R1; for the straight leading edge, that is, the endpoint upstream of the straight line of the leading edge of the second blade 532 and the endpoint upstream of the straight line of the leading edge of the third blade 533 are located on the arc line of radius R1.

[0025] like Figure 3-5 As shown, further, the second blade 532 has a radius R2, and the third blade 533 has a radius R3, R1 = (2.7-3.1) R2, preferably 2.9; R3 = (0.9-1.1) R2.

[0026] Furthermore, the first blade 531 has a thickness t, and the thickness t has at least three different thickness values ​​from the radial inside to the radial outside; specifically, the thickness t gradually increases from the radial inside to the radial outside.

[0027] Furthermore, the second blade 532 has a thickness T, and the third blade 533 has a thickness T. The thickness T is approximately constant, and the maximum value of the thickness t (t max ) is equal to the thickness T.

[0028] The high-performance cavitation-resistant automobile water pump of the present invention can effectively improve the cavitation-resistant performance of the automobile water pump through the design of the first blade 531 , the second blade 532 , and the third blade 533 , thereby improving the overall hydraulic performance of the water pump.

[0029] Furthermore, on the arc line of the radius R1 , the circumferential gap between the first blade 531 and the second blade 532 is 0.6-1.0 times the circumferential gap between the second blade 532 and the third blade 533 .

[0030] Furthermore, the outer diameter of the first blade 531 is smaller than the outer diameter of the second blade 532 or the third blade 533 , and the outer diameters of the second blade 532 and the third blade 533 are equal to the outer diameter of the rear disc 52 .

[0031] Furthermore, in the cross-sectional view through the axis (axial cross-sectional view), that is, the P-direction view, one or more connecting grooves 534 are provided on the second blade 532, and the connecting grooves 534 connect the positive pressure surface and the negative pressure surface of the second blade 532. The connecting grooves 534 allow part of the liquid to flow from the positive pressure surface to the negative pressure surface.

[0032] Furthermore, the connecting groove 534 is rectangular and extends axially. Multiple connecting grooves 534 are arranged in parallel, and the aspect ratio of the rectangle is (3-6): 1. The present invention can further improve the anti-cavitation performance of the automobile water pump through the design of the connecting groove 534, thereby improving the overall hydraulic performance of the water pump.

[0033] The present invention provides a high-performance automobile water pump with anti-cavitation properties. The design of the first blade, the second blade, the third blade, and the connecting groove can effectively improve the anti-cavitation performance of the automobile water pump, thereby improving the overall hydraulic performance of the water pump.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The "connection" mentioned above can be a direct connection or an indirect connection, and the "setting", "setting at", and "setting at" can be directly set at or indirectly set at.

[0035] The above-mentioned embodiments are illustrative of the present invention, not limiting thereof. It is understood that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-performance automobile water pump with cavitation resistance, comprising a pump body (1) and a motor (2), wherein the pump body comprises a water inlet pipe (3), a water outlet pipe (4), an impeller (5), and a volute, wherein the impeller is a centrifugal impeller installed in the volute, and the outlet pipe is provided at the outlet end of the volute, wherein the impeller comprises a front disc (51), a rear disc (52), blades (53), and a hub (54), wherein a plurality of blades are connected between the front disc and the rear disc, and the plurality of blades are distributed along the circumferential direction, and a hub is provided on the radial inner side of the rear disc, and the hub is installed on the rotating shaft of the motor ... and wherein the impeller is a centrifugal impeller installed in the volute, and the impeller is a centrifugal impeller installed in the volute, and the impeller is a centrifugal impeller installed in the volute, and the impeller is a centrifugal impeller installed in the volute, and the impeller is a centrifugal impeller installed in the volute, and the impeller is a centrifugal impeller installed in the volute, and the impeller is a centrifugal impeller installed in the volute, and the impeller is a centrifugal impeller installed in the volute, and the impeller is a centrifugal impeller installed in the volute, and the impeller is a centrifugal impeller installed in the volute, and The blades (53) include a first blade (531), a second blade (532), and a third blade (533), all of which are arc-shaped blades. The length of the first blade is greater than the length of the second blade and greater than the length of the third blade. The first blade has a radius R1, and the arc line of the radius R1 passes through the leading edge endpoint of the second blade and the leading edge endpoint of the third blade. The bending direction of the first blade is opposite to the bending directions of the second blade and the third blade.

2. The high-performance cavitation-resistant automobile water pump according to claim 1, characterized in that: The second blade (532) has a radius R2, and the third blade (533) has a radius R3, R1 = (2.6-3.2) R2, and R3 = (0.8-1.2) R2.

3. The high-performance cavitation-resistant automobile water pump according to claim 2, characterized in that: The first blade (531) has a thickness t, and the thickness t has at least three different thickness values ​​from the radial inner side to the radial outer side, and the thickness t gradually increases from the radial inner side to the radial outer side.

4. The high-performance cavitation-resistant automobile water pump according to claim 3, characterized in that: The second blade (532) has a thickness T, and the third blade (533) has a thickness T, the thickness T is approximately constant, and the maximum value (t max ) is equal to the thickness T.

5. The high-performance cavitation-resistant automobile water pump according to claim 4, characterized in that: On the arc line of radius R1, the circumferential gap between the first blade (531) and the second blade (532) is 0.6-1.0 times the circumferential gap between the second blade and the third blade (533).

6. The high-performance cavitation-resistant automobile water pump according to claim 5, characterized in that: The outer diameter of the first blade (531) is smaller than the outer diameter of the second blade (532) or the third blade (533), and the outer diameters of the second blade (532) and the third blade (533) are equal to the outer diameter of the rear disc (52).

7. The high-performance cavitation-resistant automobile water pump according to claim 6, characterized in that: For the arc-shaped leading edge, the arc-shaped middle endpoint of the leading edge of the second blade (532) and the arc-shaped middle endpoint of the leading edge of the third blade (533) are located on an arc line of radius R1; For the straight leading edge, the endpoint upstream of the straight line of the leading edge of the second blade (532) and the endpoint upstream of the straight line of the leading edge of the third blade (533) are located on the arc line of radius R1.

8. The cavitation-resistant high-performance automobile water pump according to claim 1 or 5, characterized in that: In a cross-sectional view through the axis, i.e., an axial cross-sectional view, one or more connecting grooves (534) are provided on the second blade (532), and the connecting grooves connect the positive pressure surface and the negative pressure surface of the second blade, and the connecting grooves allow part of the liquid to flow from the positive pressure surface to the negative pressure surface.

9. The high-performance cavitation-resistant automobile water pump according to claim 8, characterized in that: The communication groove (534) is rectangular and extends axially, and a plurality of communication grooves are arranged in parallel.

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