Abstract: A climate chamber apparatus for airtight, rotatable guiding a shaft through an opening of a climate chamber wall can include a roller bearing for receiving the shaft and a one-piece seal of an elastic material. The one-piece seal can include a roller-bearing receiving section, with which the roller bearing is connected, a wall receiving section, and a flexible connection section which gaplessly connects the roller-bearing receiving section with the wall receiving section. Further, a climate chamber with a heating chamber wall, a ventilator disposed on the wall, where the ventilator includes a motor, disposed external to the wall and which drives across a shaft, guided through the wall, a fan impeller, wherein the wall includes an opening which is sealed airtight such that the shaft is guided airtight through the wall.

Abstract: A Peltier module or device with at least one Peltier element with a first surface and an oppositely located second surface, wherein on the first surface a first heat transfer element of an air duct is disposed, wherein the air duct, for the conduction of air along the first heat transfer element, comprises an input opening, in which a ventilator is disposed, and an output opening and wherein on the second surface a second heat transfer element of a cooling body is disposed, wherein the ventilator is developed and disposed such that an air flow generated by the ventilator forms with the first surface an angle (?) between 10° and 80°, as well as a laboratory chamber, a refrigerator chamber, a cold chamber, a climate chamber or an environmental simulation chamber with at least one such Peltier module.