AUTOMATIC PUMP AND AN OPERATION CONTROL METHOD FOR THE SAME

Title:

AUTOMATIC PUMP AND AN OPERATION CONTROL METHOD FOR THE SAME

Document Type and Number:

WIPO Patent Application WO/2011/065711

Kind Code:

A3

Abstract:

Disclosed are an automatic pump and an operation control method for the same. With the automatic pump and the operation control method for the same, the number of turns in the stator coil of a motor is determined by optionally switching in accordance with changes in the pressure inside the housing of an automatic pump forming a flow pathway for fluid, and thus the rotational speed of the motor is varied to whichever rotational speed is appropriate among pre-set stepped rotational speeds, or is stopped. Consequently costs are curbed and volume is reduced as there is no need for an inverter as is used in automatic pumps of the prior art.

Inventors:

KIM CHUL (KR)

Application Number:

PCT/KR2010/008238

Publication Date:

November 03, 2011

Filing Date:

November 22, 2010

Export Citation:

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Assignee:

WILO PUMPS LTD (KR)
KIM CHUL (KR)

International Classes:

F04D13/06; F04D15/00

Foreign References:

US20080166246A1	2008-07-10
EP0939228A1	1999-09-01
US5281094A	1994-01-25

Other References: