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Electromagnetic wave-activated sorption refrigeration system

  • US 5,842,356 A
  • Filed: 03/20/1997
  • Issued: 12/01/1998
  • Est. Priority Date: 09/20/1995
  • Status: Expired due to Term
First Claim
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1. A refrigeration system capable of providing cooling during at least a portion of a repeatable refrigeration cycle, the refrigeration system comprising:

  • at least one sorber having a housing forming an enclosure;

    a sorbent located within the enclosure;

    the sorber including at least one port through which a sorbate may be communicated to the sorbent;

    wherein the sorbate is adsorbed by the sorbent to form a sorbate/sorbent compound;

    an electromagnetic wave generator;

    means for coupling electromagnetic waves generated by the electromagnetic wave generator to the sorber;

    wherein during a desorb portion of the refrigeration cycle electromagnetic waves transmitted by the electromagnetic wave generator are propagated through the enclosure to desorb the sorbate from the sorbate/sorbent compound;

    wherein the sorbate/sorbent compound is not heated by the electromagnetic waves to a degree sufficient to thermally desorb the sorbate from the sorbate/sorbent compound;

    a condenser connected to the sorber;

    an evaporator connected between the condenser and the port; and

    a controllable valve interposed between the condenser and the evaporator;

    wherein sorbate which is desorbed in the sorber is condensed in the condenser and then, during an adsorb portion of the refrigeration cycle, controllably evaporated in the evaporator to create a cooling effect and drawn back into the sorber;

    means for controlling the operation of the electromagnetic wave generator and the valve in response to preprogrammed instructions;

    wherein the desorb and adsorb portions of the refrigeration cycle may be selectively regulated to provide a desired cooling effect.

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