公开(公告)号：US10119509B2

公开(公告)日：2018-11-06

申请号：US14930312

申请日：2015-11-02

Applicant: COAVIS

Inventor： Gyu Sang Yu ,  Won Young Choi ,  In Seok Sohn

IPC: F02M59/16 ,  F04D5/00 ,  F04D13/06 ,  F04D15/00 ,  F04D29/66

Abstract: A multi-stage fuel pump includes a casing having a fuel intake formed on one side thereof and a fuel discharge port formed on the other side thereof, and a plurality of impellers provided within the casing, having a plurality of blades disposed on a circumferential surface in an outward direction of the circumferential surface and having blade chambers formed between the blades and penetrating through upper and lower surfaces of the impellers to allow fuel to be discharged and introduced to and from upper and lower sides of the blades, and formed in multiple stages, wherein fuel intaken through the fuel intake according to rotation of the impellers is discharged to the fuel discharge port through the blade chambers of the impellers, and the numbers of the blades of each of the impellers are different, thereby reducing blade passage frequency (BPF) noise generated according to rotation of the impellers.

公开(公告)号：US20160123288A1

公开(公告)日：2016-05-05

申请号：US14930312

申请日：2015-11-02

Applicant: COAVIS

Inventor： Gyu Sang Yu ,  Won Young Choi ,  In Seok Sohn

IPC: F02M59/16 ,  F04D3/00

CPC classification number: F02M59/16 ,  F04D5/006 ,  F04D5/007 ,  F04D13/0653 ,  F04D15/0005 ,  F04D29/669 ,  F05D2250/53

Abstract: A multi-stage fuel pump includes a casing having a fuel intake formed on one side thereof and a fuel discharge port formed on the other side thereof, and a plurality of impellers provided within the casing, having a plurality of blades disposed on a circumferential surface in an outward direction of the circumferential surface and having blade chambers formed between the blades and penetrating through upper and lower surfaces of the impellers to allow fuel to be discharged and introduced to and from upper and lower sides of the blades, and formed in multiple stages, wherein fuel intaken through the fuel intake according to rotation of the impellers is discharged to the fuel discharge port through the blade chambers of the impellers, and the numbers of the blades of each of the impellers are different, thereby reducing blade passage frequency (BPF) noise generated according to rotation of the impellers.

Abstract translation: 一种多级燃料泵，包括：壳体，其具有形成在其一侧的燃料吸入口和形成在其另一侧上的燃料排出口;多个叶轮，设置在壳体内，具有设置在周向表面上的多个叶片 在圆周表面的向外方向上，并且具有形成在叶片之间并且穿过叶轮的上表面和下表面的叶片室，以允许燃料被排出并从叶片的上侧和下侧引入并且形成为多个阶段 其特征在于，根据所述叶轮的旋转，通过所述燃料吸入口的燃料经由所述叶轮的叶片室被排出到所述燃料排出口，并且所述叶轮的叶片的数量不同，从而降低叶片通过频率 ）根据叶轮的旋转产生的噪声。