Freezing or cooling plant
AssigneeBrodrene Gram A/S
InventorHans Gram
Life of this patent
Estimating the term…
Abstract
A freezing or cooling plant comprises an apparatus having an evaporator chamber. At the lower end the apparatus is connected with a feed conduit for liquid refrigerant and a suction conduit for suctioning refrigerant vapors. Both conduits communicate with a vessel in such a way that liquid refrigerant from the apparatus may flow to the vessel via both the conduits. By heating the apparatus due to washing of the outer surface of the evaporating chamber of the apparatus, only moderate pressure rises will occur in the apparatus since, after the cooling process is stopped, the apparatus will be emptied of liquid refrigerant and during the remaining washing period will contain solely superheated refrigerant vapors.
Claims2
A freezing plant comprising an apparatus 1 including an evaporator chamber 16, a compressor 35, a condensor 30 and a liquid/vapor separator 38, a suction conduit 37 interconnecting the top end of said separator 38 with said compressor 35, the lower end of said separator 38 being connected with the lower end of said apparatus and communicating with the lower end of said evaporator chamber 16 via a pump 25;P and feed conduit means 24, 22, 20, 44, 45, 50 and 17, said pump comprising a fluid pump so as to allow being traversed in the direction opposite to the normal feeding direction when not in operation, said pump 25:P and said feed conduit means 24, 22, 20, 44, 45, 50 and 17 being arranged so as to feed liquid refrigerant from said separator 38 to the lower end of said evaporator chamber 16 and to empty said evaporator chamber 16 of liquid refrigerant;
- said separator 38 being between its top and bottom ends connected to said apparatus 1 via suction conduit means 39, 42 connected to the lower end of said apparatus 1 and communicating with the top end of said evaporator chamber 16 so as to cause evaporation of said liquid refrigerant in said evaporator chamber 16 and to allow emptying of said apparatus of liquid refrigerant, said separator 38 being positioned generally at the same level as the lower end of said evaporator chamber 16 and having dimensions such that it is capable of accommodating the maximum amount of refrigerant contained in said evaporator chamber 16 and said apparatus 1.
Dependencies are inferred from the claim text.