Tube expander for heat exchanger coil units

摘要

A tube expander for heat exchanger coil units according to which a tubular expansion process is conducted. In one aspect, the tube expander includes a fixture, which includes a back unit and first and second door assemblies movably connected thereto. One or more heat exchanger coil units are adapted to be connected to each of the first and second door assemblies. In another aspect, the fixture is adjustable to accommodate different heat exchanger coil units. In yet another aspect, the tubular expansion process is not permitted when the first or second door assembly is closed and a sensor does not sense the presence of a latch bar.

主权项

1. A tube expander for heat exchanger coil units, the tube expander comprising:
a frame; a first back unit connected to the frame, the first back unit at least partially defining an internal region; a first door assembly movably connected to the first back unit and to which at least a first heat exchanger coil unit is adapted to be connected, the first door assembly being movable between:
a first position in which the first heat exchanger coil unit is adapted to be disposed in the internal region for tubular expansion therein; anda second position in which the first heat exchanger coil unit is not adapted to be disposed in the internal region; and a second door assembly movably connected to the first back unit and to which at least a second heat exchanger coil unit is adapted to be connected, the second door assembly being movable between:
a third position in which the second heat exchanger coil unit is adapted to be disposed in the internal region for tubular expansion therein; anda fourth position in which the second heat exchanger coil unit is not adapted to be disposed in the internal region.