Abstract: An incubator hood for an incubator for premature and newborn babies as well as to a process for regulating the temperature of an incubator hood are provided. The problem frequently occurring in incubator hoods is that the incubator hoods lead to heat losses at the premature and newborn babies and that water of condensation precipitates on the inside of the incubator in such incubator hoods, and this water of condensation obstructs the view and facilitates the growth of microorganisms in the incubator. This can be counteracted by a heated incubator hood. The comparatively complicated regulation processes, which requires the installation of temperature sensors in the incubator hood is avoided by the use of interior heating wires (1) in which temperature-dependent electric resistors (3), preferably PTC resistors with a nominal response temperature of about 37° C., are arranged.

Abstract: An incubator hood for an incubator for premature and newborn babies as well as to a process for regulating the temperature of an incubator hood are provided. The problem frequently occurring in incubator hoods is that the incubator hoods lead to heat losses at the premature and newborn babies and that water of condensation precipitates on the inside of the incubator in such incubator hoods, and this water of condensation obstructs the view and facilitates the growth of microorganisms in the incubator. This can be counteracted by a heated incubator hood. The comparatively complicated regulation processes, which requires the installation of temperature sensors in the incubator hood is avoided by the use of interior heating wires (1) in which temperature-dependent electric resistors (3), preferably PTC resistors with a nominal response temperature of about 37° C., are arranged.

Abstract: A treatment unit with at least two heat sources and a lying surface (4) for a patient (2) is provided such that the ratio of the heat outputs of the heat sources in relation to one another can be set in a simple manner. A heater (5) with a first temperature control circuit (9) for setting a predetermined temperature on or in the environment of the patient (2) is provided along with a heater (3) at the lying surface (4). A second temperature control circuit (12) is provided for the lying surface heater (3). A logic circuit (15) is operatively connected between the first temperature control circuit (9) and the second temperature control circuit (12), which receives the temperature actual value or the temperature set point of the first control circuit (9) as a command variable and sends a tracking value as a lying surface temperature set point to the second temperature control circuit (12) via a temperature logic function (17).

Abstract: A substance exchange system especially for humidifying gases has at least one bundle of hollow fibers wherein a first flow space surrounds the outside of the hollow fibers and a second flow space is formed by the inner spaces of the hollow fibers with the exchange between the flow spaces being dependent on the exchange characteristic values of the hollow fibers. This substance exchange system is improved with respect to a more flexible determination of exchange quantities which are mutually independent. According to the invention, at least two sub-regions having hollow fibers of different exchange characteristic values are provided.

Abstract: A process for producing a hollow fiber mass transfer module with a number of hollow fibers sealed into a housing is improved according to the invention with regard to the development of a desirable flow space in the surface area of the hollow fibers by the fact that a spacing material is applied to the outsides of the hollow fibers before their insertion into the housing (2). The thickness of the material is chosen to conform to the desired separation of the hollow fibers. The hollow fibers are arranged substantially parallel and inserted as a bundle into the housing and are fixed with the grout. The spacing material can have a layered or particulate and granular form. A hollow fiber mass transfer module produced by the process pursuant to the invention has hollow fibers suitably arranged at uniform mutual spacings.

Abstract: A substance exchange system especially for humidifying gases has at least one bundle of hollow fibers wherein a first flow space surrounds the outside of the hollow fibers and a second flow space is formed by the inner spaces of the hollow fibers with the exchange between the flow spaces being dependent on the exchange characteristic values of the hollow fibers. This substance exchange system is improved with respect to a more flexible determination of exchange quantities which are mutually independent. According to the invention, at least two sub-regions having hollow fibers of different exchange characteristic values are provided.

Abstract: A process for producing a hollow fiber mass transfer module with a number of hollow fibers sealed into a housing is improved according to the invention with regard to the development of a desirable flow space in the surface area of the hollow fibers by the fact that a spacing material is applied to the outsides of the hollow fibers before their insertion into the housing (2). The thickness of the material is chosen to conform to the desired separation of the hollow fibers. The hollow fibers are arranged substantially parallel and inserted as a bundle into the housing and are fixed with the grout. The spacing material can have a layered or particulate and granular form. A hollow fiber mass transfer module produced by the process pursuant to the invention has hollow fibers suitably arranged at uniform mutual spacings.