Purge arrangement for absorption refrigeration systems
AssigneeBorg-Warner Corporation
InventorNeil E. Hopkins
Life of this patent
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Abstract
A purge arrangement for absorption refrigeration systems using a solution of lithium bromide as an absorbent and water as a refrigerant, and a heat transfer additive, such as octyl alcohol being added to and mixing with the lithium bromide solution. The purge arrangement includes means for automatically removing noncondensible gases or vapor from the system, said means including a vacuum pump connected to a receiver to draw noncondensible gases therefrom; automatic electrical control means for said vacuum pump; and an additive overflow conduit to prevent additive collecting in the storage receiver and to assure additive return flow into the solution conduit.
Claims10
In an absorption refrigeration machine including a generator, a condenser, an evaporator, and an absorber interconnected to form a closed system containing an absorbent solution, a refrigerant, and an undissolved liquid fraction of an additive effective to increase the refrigeration capacity of the machine, liquid passage means connected to said absorber and providing a closed circuit for flow of absorbent solution and additive through said machine, and vapor passage means for flow of noncondensible vapor from the absorber, and a purge arrangement for exhausting noncondensible vapors from the machine, said purge arrangement comprising:
- means defining a chamber for separating noncondensible vapors from said solution, said chamber being adapted to separate said additive from said solution, said additive being relatively volatile and having a lower specific gravity than said absorbent solution and tending to accumulate above the solution in the chamber;
- first conduit means having a first section connecting said liquid passage means to said chamber for diverting a portion of the solution flowing in said liquid passage means to said chamber and a second section connecting said chamber to said absorber;
- means for expelling separated noncondensible vapors from said system and including a receiver disposed above said chamber for receiving and holding said separated vapors prior to removal from said machine;
- second conduit means connecting said chamber to said receiver for flow of separated vapors therebetween, said second conduit means being adapted to conatin liquid additive separated from said solution in said chamber;
- means inducing flow of noncondensible vapor through said vapor passage means to said separation chamber by flow of solution through said first conduit means and entrainment of the vapor with the flowing solution;
- and
- third conduit means connecting said second conduit means to said liquid passage means to pass liquid additive, collecting in said second conduit means, directly to said liquid passage means thereby to inhibit collection of liquid additive in said compartment.
Dependencies are inferred from the claim text.