Absorption space cooler with no forced pumping
OwnerRoland C. Lawesinventor
Life of this patent
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Abstract
A two-liquid absorption refrigerator or space cooler of the cyclic type uses a spiral shaped Bourdon Tube as the refrigerant gas generator, with the lower end of the spiral disposed at a heat source. The generator may also function as the absorber vessel, thus greatly simplifying the operation of the device. In use, when ammonia depletion during the cooling cycle allows the generator to heat, it moves its lower end to a position removed from the heat source and begins to cool, thus allowing a charging cycle to replenish ammonia into the absorption liquid (usually water) in the generator. The device may thus function with only one moving part and without electricity, and further without control over the heating source.
Claims10
A gas absorption space cooler/refrigerator comprising:
- a generally spiral, substantially tubular generator-absorber chamber having upper and lower check valves, the upper check valve oriented to allow gas to flow out of the generator-absorber chamber but not in, the lower check valve oriented to allow gas to flow into the generator-absorber chamber but not out,
- the generator-absorber chamber made of a material sensitive to internal pressure within the generator-absorber chamber;
- whereby
- when a first level of pressure is present in the generator-absorber chamber the generator-absorber chamber assumes a first spiral shape, and when a second level of pressure is present in the generator-absorber chamber the generator-absorber chamber assumes a second shape, a first portion of the generator-absorber chamber disposed at a first location when the generator-absorber chamber assumes the first spiral shape and disposed at a second location when the generator-absorber chamber assumes the second shape;
- a heat source disposed at the first location, the heat source in thermodynamic communication with the first portion of the generator-absorber chamber;
- a condenser fluidically communicating via the upper check valve with the generator-absorber chamber, the condenser having an expansion valve;
- an evaporator fluidically communicating via the expansion valve with the condenser, and further fluidically communicating via the lower check valve with the generator-absorber chamber.
Dependencies are inferred from the claim text.