Multi-passage heater assembly
AssigneeDoben Limited
InventorsDan Vanderzwet, Zygmunt Baran, Gerald Mills
Life of this patent
Estimating the term…
Abstract
A gas dynamic spray unit is provided that includes gun housing halves secured about a heater assembly. The heater assembly includes a one-piece, multi-passage ceramic heater core. The heater assembly is retained within the gun housing using locating features provided on the heater assembly and the gun housing. The heater assembly includes a heater housing at least partially surrounding the heater core. A biasing member biases the ceramic heater core toward a tapered outlet, which is provided by a deflecting cone surrounded by an insulating cone.
Claims18
A heater assembly comprising:
- a non-metallic heater core providing multiple concentric passages leading to a common outlet that provides an exit opening to the heater assembly, at least two of the concentric passages including individual heating elements extending from a first end to a second end, the heater core including radially spaced apart walls providing the concentric passages, wherein the heater assembly is configured such that a fluid flows from the first end to the second end in a flow direction, and the fluid flows from the second end to the exit opening in a same direction as the flow direction.
A heater assembly comprising:
- a heater core providing a passage having a heating element;
- a heater housing at least partially surrounding the heater core;
- a biasing member at one end of the heater core, urging the heater core to an end of the heater housing;
- and
- a non-metallic insulating cone at the opposite end of the heater core and supported by the heater housing, the biasing member urging the heater core into engagement with the insulating cone.
A heater assembly comprising:
- a ceramic heater core providing parallel concentrically nested passages having individual heating elements;
- a non-metallic insulating cone receiving an end of the heater core, the cone in fluid communication with the concentrically nested passages so as to guide the fluid from the passages to a common outlet.
Dependencies are inferred from the claim text.