ENERGY-EFFICIENT VANE PUMP

Abstract

Disclosed is an energy-efficient vane pump which comprises a pump body. A drive shaft is arranged within the pump body. A rotor is fitted over the drive shaft. A stator is arranged besides the rotor. A plurality of vane grooves are arranged on the rotor. The vanes are evenly distributed between the rotor and the stator. A root end of the vane is located within the vane groove, and a tip end of the vane faces the stator. Side plates are arranged on both sides of the rotor. Each of the side, plate is provided with a high-pressure chamber and an oil outlet chamber. A communication channel is located on the side plate between the high-pressure chamber and the oil outlet chamber. The side plate is provided with a partition structure in the communication channel between the high-pressure chamber and the oil outlet chamber.

Claims

1. An energy-efficient vane pump, comprising a pump body; wherein a drive shaft is arranged within the pump body; a rotor is fitted over the drive shaft; a stator is arranged besides the rotor; a plurality of vane grooves are arranged on the rotor; the vanes are evenly distributed between the rotor and the stator; a root end of the vane is located within the vane groove, and a tip end of the vane faces the stator; side plates are arranged on both sides of the rotor; each of the side plate is provided with a high-pressure chamber and an oil outlet chamber; a communication channel is located on the side plate between the high-pressure chamber and the oil outlet chamber; an oil cavity is formed by the rotor, the stator, the vanes, and the side plates; the oil cavity comprises a pressure oil chamber whose volume changes from large to small with the rotation of the rotor, and an oil suction chamber whose volume changes from small to large with the rotation of the rotor; the tip end of the vane is provided with a U-shaped top groove; a top pressure chamber is formed by the vane top groove, the stator, and the side plates; the top pressure chamber is in communication with the oil pressure chamber and the oil suction chamber; a root pressure chamber is formed by the vane root end, the vane grooves, and the side plates; the root pressure chamber is in communication with the high-pressure chamber; the oil outlet chamber is in communication with the oil pressure chamber; characterized in that the side plate is provided with a partition structure in the communication channel between the high-pressure chamber and the oil outlet chamber to block the communication between the high-pressure chamber and the oil outlet chamber; the vane is provided with a through hole; two ends of the through hole is in communication with the top pressure chamber, the root pressure chamber; each of the two side surfaces of the vane facing the side plates is provided with a side groove; the side groove is in communication with the top, pressure chamber, the root pressure chamber.

2. The energy-efficient vane pump according to claim 1, wherein there are two through holes in the vane; the two through holes are symmetrical in a length direction of the vane.

3. An energy-efficient vane pump, comprising a pump body: wherein a drive shaft is arranged within the pump body; a rotor is fitted over the drive shaft; a stator is arranged besides the rotor; a plurality of vane grooves, are arranged on the rotor; the vanes are evenly distributed between the rotor and, the stator; a root end of the vane is located within the vane groove, and a tip end of the vane faces the stator; side plates are arranged on both sides of the rotor; each of the side plate is provided, with a high-pressure chamber and an oil outlet chamber; a communication channel is located on the side plate between the high-pressure chamber and the oil outlet chamber; an oil cavity is formed by the rotor, the stator, the vanes, and the side plates; the oil cavity comprises a pressure oil chamber whose volume changes from large to small with the rotation of the rotor, and an oil suction chamber whose volume changes from small to large with the rotation of the rotor; the tip end of the vane is provided with a U-shaped top groove; a top pressure chamber is formed by the vane top groove, the stator, and the side plates; the top pressure chamber is in communication with the oil pressure chamber and the oil suction chamber; a root pressure chamber is formed by the vane root end the vane grooves, and the side plates; the root pressure chamber is in communication with the high-pressure chamber; the oil outlet chamber is in communication with the oil pressure chamber; characterized in that the side plate is provided with a flow restricting structure arranged in the communication channel between the high-pressure chamber and the oil outlet chamber for limiting the flow; the vane is provided with a through hole; two ends of the through hole is in communication with the top pressure chamber, the root pressure chamber; each of the two side surfaces of the vane facing the side plates is provided with a side groove; the side groove is in communication with the top pressure chamber, the root pressure chamber.

4. The energy-efficient vane pump according to claim 3, wherein there are two through holes in the vane; the two through holes are symmetrical in a length direction of the vane.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG. 1 is a schematic diagram of a side plate of a vane pump according to the prior art.

[0017] FIG. 2 is a schematic diagram of the vane pump according to one embodiment of the present disclosure.

[0018] FIG. 3 is a schematic diagram of the side plate according to Embodiment 1 of the present disclosure.

[0019] FIG. 4 is an enlarged diagram of M part in FIG. 2.

[0020] FIG. 5 is a top view of the vane according to embodiments of the present disclosure.

[0021] FIG. 6 is a schematic diagram of the side plate according to Embodiment 2 of the present disclosure.

[0022] In the drawings: side plate 1; communication channel 2; oil outlet chamber 3; high-pressure chamber 4; stator 5; oil pressure chamber 6; vane 7; pump body 8; oil suction chamber 9; vane groove 10; drive shaft 11; rotor 12; vane root end 13; side groove 14; top groove 15; through hole 16; top pressure chamber 17; root pressure chamber 18.

DETAILED DESCRIPTION OF THE DISCLOSURE

[0023] The present disclosure will be further specifically described below through the embodiments and the accompanying drawings.

[0024] Embodiment 1: An energy-efficient vane pump, as shown in FIG. 2, comprises a pump body 8. A drive shaft 11 is arranged within the pump body 8. A rotor 12 is fitted over the drive shaft 11. A stator 5 is arranged besides the rotor 12. A plurality of vane grooves 10 are arranged on the rotor 12. The vanes 7 are evenly distributed between the rotor 12 and the stator 5. A root end of the vane 7 is located within the vane groove 10, and a tip end of the vane 7 faces the stator 5, as shown in FIGS. 2-3. Side plates 1 are arranged on both sides of the rotor 12. Each of the side plate 1 is provided with a high-pressure chamber 4 and an oil outlet chamber 3, as shown in FIG. 2. An oil cavity is formed by the rotor 12 the stator 5, the vanes 7, and the side plates 1. The oil cavity comprises a pressure oil chamber 6 whose volume, changes from large to small with the rotation of the rotor, and an oil suction chamber 9 whose volume changes from small to large with the rotation of the rotor 12, as shown in FIGS. 4-5. The tip end of the vane 7 is provided with a U-shaped top groove 15. A through hole 16 is arranged in the vane 7. Both ends of the through hole 16 is in communication with the top pressure chamber 17 and the root pressure chamber 18, respectively. There are two through holes 16. The two through holes 16 are symmetric along, the length direction of the vane 7. Each of the two side surfaces of the vane 7 facing the side plates 1 is provided with a side groove 14, respectively. The side groove 14 The side groove 14 is in communication with the top pressure chamber 17, the root pressure chamber 18, respectively, as shown in FIG. 2. The top pressure chamber 17 is formed by the vane top groove 15, the stator 5 and the side plates 1. The top pressure chamber 17 may be, in communication with the oil pressure 6, the oil suction chamber 9. The root pressure chamber 18 is formed by the vane root end 13, the vane groove 10 and the side plates 1. The root pressure chamber 18 is in communication with the high-pressure chamber 4, and the oil outlet chamber 3 is in communication with the oil pressure chamber 6.

[0025] The calculation of cross-sectional area of the channel from the high-pressure chamber to the oil outlet, chamber: according to hydrodynamic formula:

[00001]$q=\frac{b.Math.h^3}{12.Math..Math..Math.l}.Math..Math..Math.p+\frac{b.Math.h}{2}.Math.u_0,.Math.q=2.Math.S.Math.1+2.Math.S.Math..Math.2,.Math.q=Av,.Math.u_0=\frac{d}{r}k,.Math.h={\mathrm{mv}}^2/r,.Math.v=2.Math.{}_{r/t}$

[0026] Where, q represents the cross-sectional area of the pressure releasing channel; p represents the pressure differences between the high-pressure chamber and the oil outlet chamber; represents the absolute viscosity; b represents the arc on the center of the circle corresponding to the vane thickness; h represents the centrifugal force generated by the rotation of the vane; l represents the height of the vane; m represents the weight of the vane; u.sub.0 represents the relative motion speed between the vane and the vane groove; A represents the bearing, area that the pressure of the root pressure chamber acts on the vane; represents the angular velocity; d represents the gap distance between the stator and the rotor; r represents the rotation speed; k represents the system error correction factor; v represents the flow rate of the fluid (5-7 m/s); S1 represents the cross-sectional area of the through hole; S2 represents the cross-sectional area of the side groove; t: after calculation, when v=5, q=8 mm.sup.2 when v=7, q=12 mm.sup.2 further actual verification, preferably when q=9.8 mm.sup.2, the energy efficiency of the vane pump may reach up to 97%.

[0027] Embodiment 2: a side plate 1 for an energy-efficient vane pump is shown in FIG. 6. A communication channel 2 is arranged between the high-pressure chamber 4 and the oil outlet chamber 3. The total area of the cross-sectional area of the communication channel 2, cross-sectional of the through hole 16, and the cross-sectional of the side groove 14 is 9.8 m.sup.2. The rest features are equivalent to those in Embodiment 1.

[0028] The above-mentioned embodiments are only the preferable embodiments of the present disclosure, and do not intend to limit the present disclosure in any form. There are other variations and modifications without exceeding the spirit described in the claims.

[0029] The contents that are not described in detail in this specification belong to the prior art known to those skilled in the art.