Control devices for heaters
AssigneeHoneywell Inc.
InventorRudolf Vollmer
Life of this patent
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Abstract
Control devices for heating installations are disclosed, which heating installations are provided with thermostat controls. The control devices sense the temperature of the heating medium, e.g., water, to be passed to the heating installation and to be returned therefrom. The temperature difference actuates a control for mixing or directing the flow of the medium in the desired volumes. Use is made of control pistons and expansion material to provide control devices which are particularly capable of optimum energy utilization.
Claims13
A control device for a heating installation including one individually temperature controlled radiator means, first means for passing a heating medium to the heating installation and second means for returning the heating medium from the heating installation to mix with said heating medium passing into said heating installation, moveable means in said first and second means and control means actuable in response to the temperature of said heating medium and returning heating medium, said control means operating on said moveable means to vary inversely the flow of said heating medium as compared to the returning heating medium to maintain a pre-determined temperature drop between the heating medium passing to said radiator means and returning therefrom, said control means including a first thermostatic working element having a sensor for determining the temperature of the heating medium being passed to the heating installation and a second thermostatic working element having a sensor for determining the temperature of the heating medium being returned from said heating installation.
Dependencies are inferred from the claim text.