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1. (WO2018084429) PUMP FOR CIRCULATING WATER TO PREVENT NOISE DURING TRANSITION STATE

Pub. No.:    WO/2018/084429    International Application No.:    PCT/KR2017/010183
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Tue Sep 19 01:59:59 CEST 2017
IPC: F04D 13/06
F04D 29/40
F04D 29/42
F04D 29/66
F04D 29/22
Applicants: NEW MOTECH CO., LTD.
Inventors: JANG, Jeong Cheol
LEE, Kyoung Joo
YANG, Hyun Sung
KANG, Min Seok
Title: PUMP FOR CIRCULATING WATER TO PREVENT NOISE DURING TRANSITION STATE
Abstract:
The pump for circulating water according to the present invention comprises an upper housing 10 formed with an inlet 11 and an outlet 12 of fluid; a lower housing 20 arranged in a lower side of the upper housing 10, having a space formed therein; an inner housing 30 having an edge part interposed between the upper housing 10 and the lower housing 20, and an impeller receiving space 31 formed in a middle part; an impeller 50 received inside the upper housing 10 and in the impeller receiving space 31 to be rotatably installed, so as to form a flow pathway 40 between the impeller 50 and an inner surface of the inner housing 30 for the flow of fluid; a rotor 60 installed inside an outer circumference of the impeller 50; a spring 65 installed between a lower surface of the impeller and the inner housing; and a stator 70 installed inside the lower housing 20, wherein the pump for circulating water is formed with a plurality of vertical discharge holes 52A interconnected with the flow pathway 40 in a body 51 of the impeller 50 so that the fluid inside the flow pathway 40 is discharged to the upper side, and is formed with a plurality of horizontal discharge holes 52B interconnected with the plurality of vertical discharge holes 52A.