Emergency ventilator with a fan which is cooled in a conductive and convective manner

An emergency ventilator for emergency medicine artificial respiration of patients, comprising:

• a housing with an ambient air aspiration aperture and a respiratory gas output aperture, and
• a fan which is configured and arranged in the housing in order to convey ambient air from the ambient air aspiration aperture to the respiratory gas output aperture,
• where the fan comprises a fan housing with an air conveyor movable relative to the fan housing and where the fan housing is arranged housing-tight in the housing;
• where the fan housing is fixed to the housing with the interposition of a heat-conducting body, where the heat-conducting body comprises a material or is made from a material which is chosen out of light metal, non-ferrous metal, and/or a synthetic filled with heat-conducting filling material,
• wherein a surface of the heat-conducting body forms a wall of a region enclosing a respiratory gas and
• wherein an outer surface of the fan housing is exposed in a section of a flow path from the ambient air aspiration aperture to the respiratory gas output aperture in such a way that during a ventilation operation of the emergency ventilator it can be bathed by respiratory gas conveyed by the fan;
• the heat-conducting body surrounding a mixing chamber on four sides forming a recess where the outer surface of the fan housing which can be bathed by respiratory gas is arranged in the recess formed by the heat-conducting body.

An emergency ventilator for emergency medicine artificial respiration of patients, comprising:

• a housing with an ambient air aspiration aperture and a respiratory gas output aperture, and
• a fan which is configured and arranged in the housing in order to convey ambient air from the ambient air aspiration aperture to the respiratory gas output aperture,
• where the fan comprises a fan housing with an air conveyor movable relative to the fan housing and where the fan housing is arranged housing-tight in the housing;
• where the fan housing is fixed to the housing with the interposition of a heat-conducting body, where the heat-conducting body comprises a material or is made from a material which is chosen out of light metal, non-ferrous metal, and/or a synthetic filled with heat-conducting filling material,
• wherein the heat-conducting body exhibits a fan joint-face which lies opposite a section of the fan housing and exhibits a housing joint-face which faces towards an inner surface of the housing, where the housing joint-face is at least twice as large as the fan joint-face and
• wherein the housing joint-face is at least six times as large as the fan joint-face.