Method and apparatus for controlling the temperature in the refrigerator chamber and freezer compartment of an absorption refrigerator
AssigneeAktiebolaget Electrolux
InventorPeter E. Blomberg
Life of this patent
Estimating the term…
Abstract
In a refrigerator cabinet operated with an absorption refrigerating apparatus having an evaporator for cooling a refrigerating chamber and an evaporator for cooling a freezing chamber. The refrigerator condensate is supplied to the freezing evaporator and partly evaporated, while the residue flows by gravity into the refrigerating evaporator. At very low ambient temperature the freezing evaporator receives too little refrigerant, or else the refrigerating evaporator too much. This situation is avoided in that an evaporator part for cooling of the freezing chamber is supplied with refrigerant condensate at short intervals during periods when the thermostat for the refrigerating chamber is in an off position.
Claims14
In an absorption refrigerating apparatus containing a refrigerant in a body of absorption liquid and employing an inert pressure equalizing gas and provided with an energy supply and a refrigerant cabinet having a refrigerating chamber and a freezing chamber, the apparatus having a first thermostat that is influenced by the temperature of said refrigerating chamber to thereby connect and disconnect the energy supply to the refrigerating apparatus, the improvement comprising a second thermostat dependent upon the freezing chamber temperature for activating said energy supply to said refrigerating apparatus for short periods of time during the disconnect period of said first thermostat.
An absorption refrigerating apparatus containing a refrigerant in a body of absorption liquid and employing an inert pressure equalizing gas and provided with an energy supply and a refrigerator cabinet having a refrigerating chamber and a freezing chamber comprising:
- a first thermostat that is influenced by the temperature of said refrigerating chamber to thereby connect and disconnect the energy supply to the refrigerating apparatus, means for activating said energy supply to said refrigerating apparatus for short periods of time during the disconnect period of said first thermostat, and further comprising a second thermostat dependent upon the freezing chamber temperature, said second thermostat also being arranged to influence said energy supply of said refrigerating apparatus, said thermostats functioning to prevent a too low temperature in said refrigerating chamber at low ambient temperatures while maintaining an even and low temperature in said freezing chamber.
A method for use with a refrigerator operated by an absorption refrigerating apparatus, said refrigerator having a refrigerating chamber and a freezing chamber comprising:
- providing at least one thermostat which is influenced by the temperature in said refrigerating chamber controlling said refrigerating apparatus and said freezing chamber to automatically defrost a cooling element in said refrigerating chamber and to avoid a too low temperature in said refrigerating chamber at low ambient temperature, maintaining an even and low temperature in said freezing chamber, and supplying an evaporator for the cooling of said freezing chamber with refrigerant condensate at short intervals during periods when said thermostat for the refrigerating chamber is in its disconnected condition.
Dependencies are inferred from the claim text.