Abstract: A fan for a gas burner system where at the outflow side of the fan a combustion gas is fed in, in order to form a flammable mixture of gas and air, the fan comprising a spiral-shaped fan housing having a rotational axis and an air outlet; the air outlet of the fan housing widening like a snail shell towards the outflow side of the fan; an impeller that is arranged concentric to the rotational axis in the interior of the fan housing; and an electric motor for driving the impeller, which is integrated at the center of the impeller.

Abstract: The invention relates to a cooling apparatus having a cooling structure that comprises at least one surface area for introducing heat, and a cooling member that is connected to the cooling structure in a heat-conducting manner, wherein the cooling member is moveable so as to generate an air flow by means of the movement of the cooling member, the air flow supporting heat emission from the cooling member to the environment.

Abstract: A fan for a gas burner system where at the outflow side of the fan a combustion gas is fed in, in order to form a flammable mixture of gas and air, the fan comprising a spiral-shaped fan housing having a rotational axis and an air outlet; the air outlet of the fan housing widening like a snail shell towards the outflow side of the fan; an impeller that is arranged concentric to the rotational axis in the interior of the fan housing; and an electric motor for driving the impeller, which is integrated at the center of the impeller.

Abstract: The invention relates to a cooling apparatus having a cooling structure that comprises at least one surface area for introducing heat, and a cooling member that is connected to the cooling structure in a heat-conducting manner, wherein the cooling member is moveable so as to generate an air flow by means of the movement of the cooling member, the air flow supporting heat emission from the cooling member to the environment.

Abstract: The invention relates to a housing component for a device to be ventilated, in particular an electrical or electronic device such as a mains piece with a planar wall section and a perforated aperture in the wall section. The aperture comprises several openings and webs between the openings. The webs are at least partly displaced relative to the surface of the wall section and preferably curved and thus elongated such that the total area of the openings defined by the webs is increased. The flow resistance of the perforated aperture, which is determined by the proportion of free surface to the base area of the aperture, is thus reduced.

Abstract: The heat-critical elements of the personal computer (PC) are arranged such with reference to air intake and air exit openings in the housing as well as with reference to cooling members attached laterally or, respectively, to the outside walls of the housing that an adequate and exclusively passive cooling is achieved by thermal conduction, convection and chimney effects. The device of the invention can be employed for cooling PCs, particularly in flat desktop structure.