Abstract: In the fluid mixing fixture, a displacement body and a tubular shell, which coaxially encloses the displacement body, are arranged at an inflow element. A temperature measuring element, such as a nickel wire which is covered by a plastic jacket, is wound around the tubular shell at the region of an annular gap formed between the displacement body and the tubular shell. Hot water and cold water flow through inflow openings of the inflow element and into a recess or chamber thereof, at that location the hot water and cold water are admixed and then the admixed water flows through the annular gap to an outflow opening. Since the flow cross-sectional area of the annular gap is smaller than the inflow cross-sectional area of the inflow openings the velocity of the admixed water is increased. This promotes further admixing of the hot and cold water and enhances heat transfer to the tubular shell.

Abstract: Two heat exchangers are arranged in a fixture body of a water dispenser. A Peltier arrangement is provided between the two heat exchangers. Valves arranged downstream of the two heat exchangers with respect to the direction of water flow control the flow of hot and cold water through the water dispenser. The Peltier arrangement senses and responds to the temperature difference prevailing between the two heat exchangers through which respectively flows hot water and cold water. This Peltier arrangement converts the sensed temperature difference into an electrical potential or voltage which is used to power an electronic control. This electronic control, among other things, influences opening and closing of the valves.

Abstract: A thermostatic expansible material-working element with a housing filled with the material and a pin-shaped work piston which is pointed at one end. The work piston with its pointed end extends through an opening in the housing into the internal compartment thereof and upon thermal expansion of the expansible material such piston is displaced out of the housing. According to the invention the expansible material is a molded body predominantly formed of polytetrafluoroethylene, polytrifluoroethylene or polytetrafluoroethyleneperfluoropropylene.