The present invention is to make it possible to achieve the purpose of weight reduction while improving the productivity and assembly while reducing the production cost while improving the quality and durability by increasing the productivity and assembly by separating the connecting bracket and the upper housing and the lower housing into three pieces; A connection bracket capable of combining a thin plate made of metal with an impeller assembly inside an upper case having an inlet and an outlet for heating water inflow and outflow using a press mold, and a pumping section closed with a lower case; And the upper housing constituting the upper portion of the housing coupled to the connection bracket and bolts; It is configured to include a lower housing that is combined with the upper housing to form a motor and a stator assembly.
展开▼
