The present invention discloses a novel micro-channel heat exchanger, comprising header pipes, a plurality of first flat pipes and fins, and further comprising a bending region formed by bending the header pipes, wherein second flat pipes and a bending assembly are provided in the bending region, the second flat pipes are connected between adjacent header pipes, the bending assembly is distributed between adjacent second flat pipes, and air is capable of passing through the bending assembly to circulate. On the premise that the performance of the heat exchanger is guaranteed, the present invention well solves the problem of fin deformation caused when the heat exchanger is bent along a length direction of the header pipes.

The present invention discloses a novel micro-channel heat exchanger, comprising header pipes, a plurality of first flat pipes and fins, and further comprising a bending region formed by bending the header pipes, wherein second flat pipes and a bending assembly are provided in the bending region, the second flat pipes are connected between adjacent header pipes, the bending assembly is distributed between adjacent second flat pipes, and air is capable of passing through the bending assembly to circulate. On the premise that the performance of the heat exchanger is guaranteed, the present invention well solves the problem of fin deformation caused when the heat exchanger is bent along a length direction of the header pipes.

An apparatus for inserting flattened tubes into heat exchanger fins includes a guide inserted into at least one out of a plurality of cutaway portions for holding heat exchanger fins in the thickness direction. A guide holding unit holds the heat exchanger fins and the guide with a flattened tube holding unit in which flattened tubes are held in an intermittent arrangement with respect to the cutaway portions into which the guide has not been inserted. A flattened tube insertion driving unit inserts the flattened tubes held on the flattened tube holding unit into the cutaway portion with a platen that is caused to contact another edge in a width direction of the heat exchanger fins when the flattened tubes are inserted into the cutaway portions. Thereafter a compressing unit compresses the heat exchanger fins in the stacking direction.

An apparatus for inserting flattened tubes into heat exchanger fins includes a guide inserted into at least one out of a plurality of cutaway portions for holding heat exchanger fins in the thickness direction. A guide holding unit holds the heat exchanger fins and the guide with a flattened tube holding unit in which flattened tubes are held in an intermittent arrangement with respect to the cutaway portions into which the guide has not been inserted. A flattened tube insertion driving unit inserts the flattened tubes held on the flattened tube holding unit into the cutaway portion with a platen that is caused to contact another edge in a width direction of the heat exchanger fins when the flattened tubes are inserted into the cutaway portions. Thereafter a compressing unit compresses the heat exchanger fins in the stacking direction.

An apparatus for inserting flattened tubes into heat exchanger fins includes a fin stack arranging unit in which heat exchanger fins are stacked in the thickness direction and a guide is inserted into at least a cutaway portion. A flattened tube arranging unit holds flattened tubes in an intermittent arrangement with respect to the cutaway portions into which the guide has not been inserted. A flattened tube insertion driving unit inserts the flattened tubes into the cutaway portions. A contact plate produces a reactive force when the flattened tubes are inserted into the cutaway portions. A flattened tube intermittently inserted fin stack arranging unit aligns the positions of cutaway portions into which the flattened tubes have not been inserted to the positions of the flattened tubes on the flattened tube arranging unit and is used in place of the fin stack arranging unit.

An apparatus for inserting flattened tubes into heat exchanger fins includes a fin stack arranging unit in which heat exchanger fins are stacked in the thickness direction and a guide is inserted into at least a cutaway portion. A flattened tube arranging unit holds flattened tubes in an intermittent arrangement with respect to the cutaway portions into which the guide has not been inserted. A flattened tube insertion driving unit inserts the flattened tubes into the cutaway portions. A contact plate produces a reactive force when the flattened tubes are inserted into the cutaway portions. A flattened tube intermittently inserted fin stack arranging unit aligns the positions of cutaway portions into which the flattened tubes have not been inserted to the positions of the flattened tubes on the flattened tube arranging unit and is used in place of the fin stack arranging unit.

The invention relates to a method of manufacturing a pipe segment for a link tube between the sea floor and a petroleum drilling rig disposed on the sea surface, wherein it consists in: providing a transport pipe segment that is resistant to open-sea conditions; disposing a female bayonet-piece around one reinforced end of the transport pipe segment; welding or otherwise bonding a narrower portion of the bayonet-piece to said reinforced end; disposing an insulator around the transport pipe segment and around the bayonet-piece; inserting the transport pipe segment into an outer wall segment; welding or otherwise bonding a narrower portion of the outer wall segment to the other reinforced end of the transport pipe segment; disposing a cover-piece around the bayonet-piece; welding or otherwise bonding the cover-piece to the outer wall segment and to the bayonet-piece; it being possible to apply tightening torque to the outer wall segment and to transmit it to the transport pipe segment.

A heat exchanger and methods of manufacturing and assembling a heat exchanger, and more particularly to an air-flow heat exchanger having a mechanically assembled header for use in a motor vehicle. The heat exchanger comprises an all-metal bonded matrix including a plurality of substantially parallel metallic tubes and a plurality of metallic fins. The tubes have a heat transfer portion that is elongate in cross-sectional shape, and which comprises two opposing, longer sides, and two opposing shorter sides. At least one of the tubes is mechanically joined at a first end portion thereof to a first header of the heat exchanger by at least one compliant member. The compliant member extends around the first end portion of the tube to provide a seal and to permit relative movement between the mechanically joined tube and the first header due to thermal expansion and contraction of the matrix.

An apparatus and a method are provided for a modular intercooler block that may be fabricated by way of direct metal printing and assembled to form larger intercoolers. The modular intercooler block comprises cooling fins that are spaced between first and second core headers to allow passage of an airstream. Countersunk holes are arranged on the first and second core headers and configured to receive grommets when the first or second core header is fastened to another core header comprising similarly arranged countersunk holes. A core tube extends along an undulating path from each countersunk hole in the first core header, through the multiplicity of cooling fins, to a similar countersunk hole in the second core header. The core tubes may include thin copper walls and spiraled inner passages to enhance heat transfer to the airstream passing through the multiplicity of cooling fins.

An apparatus and a method are provided for a modular intercooler block that may be fabricated by way of direct metal printing and assembled to form larger intercoolers. The modular intercooler block comprises cooling fins that are spaced between first and second core headers to allow passage of an airstream. Countersunk holes are arranged on the first and second core headers and configured to receive grommets when the first or second core header is fastened to another core header comprising similarly arranged countersunk holes. A core tube extends along an undulating path from each countersunk hole in the first core header, through the multiplicity of cooling fins, to a similar countersunk hole in the second core header. The core tubes may include thin copper walls and spiraled inner passages to enhance heat transfer to the airstream passing through the multiplicity of cooling fins.