Danfoss A/s

Niels P Graversen

Svend P Pedersen

Knud V Valbjorn

John Porland

Aage Molgaard

The invention relates to a remote control temperature sensor having a capsule containing an expansible material and a capillary tube which connects the capsule to a radiator valve or the like. The temperature sensor has a housing in which the capsule in rotatably mounted and the housing is a wall where the temperature is to be monitored. The capillary tube is wound around the capsule and is dispensible therefrom any desired distance less than the length of the tube to the radiator valve to which the sensor is to be connected.

Remote control temperature sensor with expansible material

The invention relates to a manually setable, knob-type thermostatic control assembly for radiator valves. The knob normally has a fixed or usual setting to provide a desired temperature for a room. Occasionally the setting is temporarily changed for one reason or another and the unit must be reset to its usual setting. This is facilitated herein and in the prior art by providing index markings on the relatively rotatable members. The novelty herein, however, is in providing a cap for the rotatable knob member which carries the index marking and the cap is readily adjustable relative to rotatable member in a simple manner without detaching the cap from the knob member.

Rotary knob for thermostatic valves of radiators

The invention relates to a thermostatic valve regulating system having a central control unit for operating two or more remotely located valve operating units. The valve operating units are for heat transfer equipment such as radiators. The valve operating units have expansible chamber elements and associated valve operating rods. The central control unit has an adjustable temperature response expansible chamber element -TRECE) with a vapor-liquid filling. The central control unit also has a transmitting expansible chamber element (TECE) which is connected to all of the expansible chamber elements of the valve operating units with capillary tubing. The capillary tubing and the connected expansible chamber elements are filled with a liquid transmitting element. The temperature responsive TRECE is in series relation to TECE and expansion and recession thereof cause an opposite recession or expansion of TECE. The expansion and recession of TECE is transmitted via the transmitting liquid to each of the expansible chamber elements of the remotely located valve operating units. SU

Sensing and setting device for a regulator arrangement comprising a

The invention relates to a combination heating and cooling valve assembly having a housing with horizontally aligned inlet and outlet ports and a second outlet port which opens downwardly at right angles to the other two ports. A movable valve plate having an aperture and upper and lower closure portions cooperates with the first outlet port. The valve plate has two closed positions corresponding to heating and cooling operations with either the upper or lower closure portion thereof covering the outlet port. A valve rod unit connected to the valve plate has a temperature responsive expansible link for lengthening and shortening the effective length of the rod unit depending on whether the valve assembly is controlling a cooling or heating medium. The expansible rod link is accessible to the heating or cooling medium which supplies the heat or cold for operating the link.

Slide valve

The invention relates to an integrated thermostatic control system for cooling and heating. The control system includes cooling and heating valves and fluid pressure controlled operating elements for the valves. The system has a common sensor and a common variable chamber temperature setting unit. A capillary tube system connects the operating elements to the sensor and the temperature setting unit. An adjustable spring associated with either of the operating units biases the associated valve in the closing direction to provide an operationally dormant dead zone.

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Augustenborg, Denmark

Niels P Graversen