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US 5,964,215 AGranted
Heating installation with closed liquid circuit
OwnerJan Henk Cnosseninventor
Life of this patent
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Abstract
The invention relates to a heating installation comprising a closed liquid circuit which is under pressure during operation, in which are incorporated a heating boiler in which heat is supplied to a liquid circulating in the circuit and heat-generating means such as radiators and/or convectors, further comprising a pressureless liquid reservoir connectable by valve means to the circuit, which valve means are mechanical valve means controlled by the pressure in the circuit.
Claims3
A heating installation comprising a closed liquid circuit which is under pressure during operation, comprising:
- a heating boiler in which heat is supplied to a liquid circulating in the circuit;
- heat-generating means;
- a pressureless liquid reservoir connectable by a valve system to the circuit, which valve system is controlled by the pressure in the circuit;
- and
- a channel between said reservoir and said valve system;
- wherein said valve system comprises a feed/drain valve comprising a valve element having a drain port and a feed port, said valve element being movable between a first position wherein said drain port lies in line with said channel when the pressure is high and a second position wherein said feed port lies in line with said channel when the pressure is low.
3 more elements
Dependencies are inferred from the claim text.