Abstract: An axial-flow blower arrangement for the condenser (28) of a roof-mounted air conditioning installation including two evaporator units (3, 4) and a condenser unit (2) arranged between them comprises at least two blower modules (1), each of which has a box-shaped downwardly open hood (10) which has a cover wall (12) and walls (14, 15, 16, 17) which in the mounted condition extend downwardly from the cover wall and which together with the cover wall enclose an air suction chamber (26), out of which an axial-flow blower (23) mounted under the cover wall sucks air and discharges it into the atmosphere through an air outlet opening (20).

Abstract: In a heating device operated with liquid fuel, comprising a fuel pump (1) which includes a displacer member (2) and serves to suck the liquid fuel out of a tank (6) and feed it to a pressure conduit region (7, 9) in which an increased pressure defined by a pressure regulator (14) prevails and which further passes the fuel to an atomizer nozzle (10) from which it passes into a combustion chamber to form a burner flame (11), to avoid interruptions in operation it is provided that the pressure conduit region (7, 9) includes at least one additional volume (20, 22; 24, 26), the size of which is so selected that the pressure drop occurring in the pressure conduit region (7, 9) when gas bubbles are sucked in does not lead to an ongoing interruption in the fuel delivery by the fuel pump (1).

Abstract: An axial-flow blower arrangement for the condenser (28) of a roof-mounted air conditioning installation including two evaporator units (3, 4) and a condenser unit (2) arranged between them comprises at least two blower modules (1), each of which has a box-shaped downwardly open hood (10) which has a cover wall (12) and walls (14, 15, 16, 17) which in the mounted condition extend downwardly from the cover wall and which together with the cover wall enclose an air suction chamber (26), out of which an axial-flow blower (23) mounted under the cover wall sucks air and discharges it into the atmosphere through an air outlet opening (20).