Patent ID: 11859753
Assignee: PER AARSLEFF A/S
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. An apparatus for curing a liner of a pipeline, the liner including a resin which is curable by exposure to electromagnetic radiation of a specific wavelength or a specific wavelength range, the apparatus comprising:
a housing defining opposite first and second ends, an outer wall, and an inner wall defining a substantially unobstructed through-going passage extending longitudinally through the housing from the first and toward the second end;
a power supply wire for the supply of electrical power to the apparatus;
a plurality of light emitting diodes configured to irradiate electromagnetic radiation of the specific wavelength or the specific wavelength range, the plurality of light emitting diodes being positioned about the housing, the plurality of light emitting diodes being connected to the power supply wire;
wherein the plurality of light emitting diodes are connected in thermal conductive relationship to heat dissipating elements at the inner wall of the housing in the through-going passage of the housing for allowing a stream of cooling fluid to pass through the passage for dissipating heat from the heat dissipating elements and cooling the light emitting diodes;
wherein the housing defines an innermost wall dividing the substantially unobstructed through-going passage into an inner passage centrally located within the substantially unobstructed through-going passage and extending substantially between the first and second ends, and, an outer
passage defined between the inner wall and the innermost wall and coaxially enclosing the inner passage, and
wherein said housing is closed at said second end and said through-going passage defines a flow reversing chamber at said second end for establishing fluid communication between said first passage and said second passage.