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US 7,740,457 B2Granted
Means for delivery of flowable media, especially lubricants
AssigneeHydac System GmbH
InventorFrank Günter Lehmann
Life of this patent
Estimating the term…
Abstract
A device for delivery of flowable media, especially of lubricants, includes a pump (1) driven by a motor and forming a component of a line system. At least one heating element (21) activated by energy supply is located outside of the housing (3) of the pump (1) in a position enabling heat transfer to the housing (3).
Claims12
A device for delivering flowable media, comprising:
- a pump driven by a motor, forming a component of a line system and having a pump housing with opposite first and second end walls joined by first and second side walls;
- a fluid input and a fluid output aligned on said first and second end walls, respectively, and defining a start position and an end position of an inner flow path of said pump;
- displacement elements of said pump in said pump housing;
- at least one heating element activated by an energy supply located outside of said pump housing in a position to transfer heat to said pump housing, said heating element unit including a first PTC heating element on a flat section of an outside surface of said first side wall at a height of said fluid input and said fluid output;
- a second PTC heating element attached on a flat section of an outside surface of said second side wall of said pump housing, said flat sections being adjacent said displacement elements in said pump housing;
- and
- a carrier formed of an aluminum sheet mounting said first and second PTC heating elements to said flat sections of said outside surfaces of said pump housing to transfer heat to said pump housing, said PTC heating elements having flat outer sides adjoining said carrier.
4 more elements
A device for delivering flowable media, comprising:
- a pump driven by a motor, forming a component of a line system and having a pump housing with opposite first and second end walls joined by first and second side walls, said side walls having outside surface sections;
- a fluid input and a fluid output aligned on said first and second end walls, respectively, defining a start position and an end position of inner flow path of said pump;
- displacement elements of said pump in said pump housing between said fluid input and fluid output, said outside surface sections being adjacent said displacement elements in said pump housing;
- a carrier formed of an aluminum sheet and placed on said outside surface sections;
- and
- first and second PTC heating elements having flat surfaces mounted on said carrier and activated by electrical energy supplied from outside said pump housing to transfer heat to said pump housing.
3 more elements
Dependencies are inferred from the claim text.