Refrigerators

An absorber type refrigerator having a burner means adapted to burn a fuel with air, which comprises shielding means adapted to substantially totally enclose the burner means to inhibit adverse effects of draughts upon the burner means, a flue leading upwards from the shielding means and having an upper exit to the ambient air provided with means adapted to produce a reduction of pressure from the ambient air, inlet connection means adapted to provide access for the ambient air to the interior of the shielding means, and means at the entrance of the inlet connection means adapted to prevent any reduction of pressure from the ambient air to the interior of the inlet connection means in draughty conditions of the ambient air, in which the inlet connection means comprises a pipe in communication with the shielding means and the means adapted to prevent pressure reduction at the entrance to the inlet connection means comprises two intersecting substantially orthogonally oriented flat plates located in the entrance to the pipe and projecting out of the entrance into the ambient air, the pipe being elongated in a longitudinal direction, at least the portion of the plates wholly inside the pipe intersecting along a line substantially parallel with the longitudinal direction of the pipe.

An absorber type refrigerator having a burner means adapted to burn a fuel with air, which comprises shielding means adapted to substantially totally enclose the burner means to inhibit adverse effects of draughts upon the burner means, a flue leading upwards from the shielding means and having an upper exit to the ambient air provided with means adapted to produce a reduction of pressure from the ambient air, a water trap in the flue for collecting moisture which may form in the flue and preventing the moisture from falling onto the burner means, said water trap including drain means adapted to dispose of trapped moisture, inlet connection means adapted to provide access for the ambient air to the interior of the shielding means, and means at the entrance of the inlet connection means adapted to prevent any reduction of pressure from the ambient air to the interior of the inlet connection means in draughty conditions of the ambient air.

An adsorber type refrigerator having a burner means adapted to burn a fuel with air, which comprises sheilding means adapted to substantially totally enclose the burner means to inhibit adverse effects of draughts upon the burner means, a flue leading upwards from the shielding means and having an upper exit to the ambient air provided with means adapted to produce a reduction of pressure from the ambient air, inlet connection means adapted to provide access for the ambient air to the interior of the shielding means, and means at the entrance of the inlet connection means adapted to prevent any reduction of pressure from the ambient air to the interior of the inlet connection means in draughty conditions of the ambient air, said means adapted to prevent any reduction of pressure comprising flat plates projecting outside the connection means, and portions of said flat plates comprising four tabs curved radially outward relative to the longitudinal direction of the connection means.

An absorber type refrigerator having a burner means adapted to burn a fuel with air, which comprises shielding means adapted to substantially totally enclose the burner means to inhibit adverse effects of draughts upon the burner means, a flue leading upwards from the shielding means and having an upper exit to the ambient air provided with means adapted to produce a reduction of pressure from the ambient air, inlet connection means adapted to provide access for the ambient air to the interior of the shielding means, and means at the entrance of the inlet connection means adapted to prevent any reduction of pressure from the ambient air to the interior of the inlet connection means in draughty conditions of the ambient air, in which the means adapted to prevent pressure reduction from the ambient air to the interior of the inlet connection means comprises a truncated hollow cone mounted at the entrance having a smaller truncation hole located inside the entrance and a larger truncation hole located outside the entrance, said truncated hollow cone having its walls spaced from the entrance to the inlet connection means to provide air passages into the inlet connection means both outside and inside the walls of said cone.