Pump for delivering heated fluids

Claim 2

A reciprocating pump for delivering heated fluids comprising: A. a pair of operatively associated cylinders; B. a pair of reciprocating pistons seated within said pair of cylinders dividing each of the cylinders into a pair of expansible, adjacent chambers, each pair of adjacent chambers including a pressure chamBer and a coaxially related pumping chamber; C. a compression chamber operatively associated within said pressure chamber; D. delivery means for alternately delivering a heated fluid through the compression chamber of one cylinder to the pumping chamber of the other cylinder of said pair of cylinders; and E. means for alternately driving each piston of said pair of pistons in pumping strokes for alternately expelling fluid from said pumping chambers in response to a delivery of heated fluid through said compression chamber.

Claim 3

The pump of claim 1 wherein: A. said delivery means includes a heat exchanger; and B. said means for driving said piston is a vaporizable fluid operatively associated with the heat exchanger.

Claim 4

The pump of claim 2 wherein: A. the delivery means further includes a valved conduit operatively associated with a source of heated fluid; and B. the pumping chamber of each cylinder is associated with a fluid receiver.

Claim 5

A reciprocating pump operatively associated with a source of heated fluid adapted to utilize thermal energy given up by the heated fluid for pumping the fluid to a fluid receiver comprising: A. a pair of operatively related cylinders, each including a reciprocable piston dividing the cylinder into a coaxially related pressure chamber and pumping chamber; B. means defining within each pumping chamber a fluid intake port and a fluid discharge port; C. a compression chamber operatively associated with each of said pressure chambers; D. a vaporizable fluid within each of said compression chambers adapted to undergo a phase change in response to changes in temperature; E. a compression spring operatively seated in each of said pumping chambers for continuously urging said pistons toward said pressure chambers; F. a fluid circuit including a first leg having therein a first coil operatively related to the compression chamber of one of said cylinders and terminating at the intake port of the pumping chamber of the other cylinder of said pair, and a second leg including therewithin a second coil operatively associated with the compression chamber of the second cylinder of said pair of cylinders and terminating at the intake port of the pumping chamber of the other cylinder of said pair of cylinders, and a one-way check valve interposed in each of said legs for precluding the counterflow of fluid therein; G. a fluid receiver conduit operatively associated with each discharge port, including therein a one-way check valve for precluding a counterflow of fluid through the discharge ports of said pumping chambers; and H. a heat sink operatively coupled with the compression chamber of each of the cylinders, whereby an established flow of heated fluid through said first leg is interrupted and said vaporizable fluid is condensed within the related compression chamber for effecting an intake stroke of the associated piston as a flow of heated fluid is established through the second leg of the circuit for vaporizing the vaporizable fluid confined within the pressure chamber associated with the other cylinder to thus achieve an expansion thereof, so that a pumping stroke is imparted to the piston associated with said other cylinder.

Claim 6

A reciprocating pump operatively associated with a source of heated fluid adapted to utilize thermal energy given up by the heated fluid for pumping the fluid to a fluid receiver comprising: A. a pair of operatively related cylinders, each including a reciprocable piston dividing the cylinder into a coaxially related pressure chamber and pumping chamber; B. means defining within each pumping chamber a fluid intake port and a fluid discharge port; C. a compression chamber operatively associated with each of said pressure chambers; D. a vaporizable fluid within each of said compression chambers adapted to undergo a phase change in response to changes in temperature; E. a compression spring operatively seated in each of said pumping chambers for continuously urging said pistons toward said pressure chambers; F. a fluid circuit including a first leg having therein a first coil operatively related to the compression chamber of one of said cylinders and terminating at the intake port of the pumping chamber of the other cylinder of said pair, and a second leg including therewithin a second coil operatively associated with the compression chamber of the second cylinder of said pair of cylinders and terminating at the intake port of the pumping chamber of the other cylinder of said pair of cylinders, and a one-way check valve interposed in each of said legs for precluding the counterflow of fluid therein; G. a fluid receiver conduit operatively associated with each discharge port, including therein a one-way check valve for precluding a counterflow of fluid through the discharge ports of said pumping chambers; and H. a heat sink operatively coupled with the compression chamber of each of the cylinders, whereby an established flow of heated fluid through said first leg is interrupted and said vaporizable fluid is condensed within the related compression chamber for effecting an intake stroke of the associated piston as a flow of heated fluid is established through the second leg of the circuit for vaporizing the vaporizable fluid confined within the pressure chamber associated with the other cylinder to thus achieve an expansion thereof, so that a pumping stroke is imparted to the piston associated with said other cylinder.

Claim 7

A reciprocating pump for delivering heated fluids including: A. a multiplicity of adjacent cylinders; B. a multiplicity of reciprocable pistons seated within said multiplicity of cylinders defining within each of said cylinders a pressure chamber and a coaxially related pumping chamber; C. means defining within each of said cylinders a compression chamber communicating with the pressure chamber defined within the cylinder; D. a heat exchanger including means comprising a tubular conduit seated in the compression chamber defined within each of the cylinders and terminating in a pumping chamber defined withianother cylinder for serially delivering heated fluid through the within another chAmbers to the pumping chambers, and E. means including a vaporizable fluid disposed within each of said compression chambers responsive to a delivery of heated fluid therethrough for expelling from the pumping chambers heated fluid delivered thereto.

Claim 8

A reciprocating pump for delivering heated fluids including: A. a multiplicity of adjacent cylinders; B. a multiplicity of reciprocable pistons seated within said multiplicity of cylinders defining within each of said cylinders a pressure chamber and a coaxially related pumping chamber; C. means defining within each of said cylinders a compression chamber communicating with the pressure chamber defined within the cylinder; D. a heat exchanger including means comprising a tubular conduit seated in the compression chamber defined within each of the cylinders and terminating in a pumping chamber defined withianother cylinder for serially delivering heated fluid through the within another chAmbers to the pumping chambers, and E. means including a vaporizable fluid disposed within each of said compression chambers responsive to a delivery of heated fluid therethrough for expelling from the pumping chambers heated fluid delivered thereto.