Title of Invention: Multiple heat exchanging chamber engine
Abstract: This invention is an external combustion engine that operates on an open or closed hot air cycle with isothermal compression of ambient temperature fluid; heat is added at constant volume; and the fluid is expanded to near ambient pressure. The engine has a compressor, heater, multiple heat exchanging chambers, and an expander. The heat, originating in a heater, is moved by fluid flow through a plurality of heat exchanging chambers in sequence, one heat exchanging chamber at a time. The heating circuit can be operated open or closed cycle. The more heat exchanging chambers, the more time for the heat exchanger in the heat exchanging chamber to heat up. Fluid from the heater circuit heats up a movable heat exchanger; valves isolate the heating circuit from the heat exchanging chamber; fluid is compressed through a compressor transfer valve into a heat exchanging chamber; the compressor transfer valve is closed; water is injected into the heat exchanging chamber; the heat exchanger gives up heat to and heats up the fluid and water in the heat exchanging chamber; the hot fluid and steam moves out of the heat exchanging chamber through an expander transfer valve into a conventional piston type expander which provides the output work.
Detailed Description: Part PAC: REFERENCE NUMERALS IN DRAWINGS
Part PA1: 2 gear box PA1 4 power output shaft PA1 6 low speed shaft PA1 10 compressor PA1 12 air inlet valve PA1 20 expander PA1 24 exhaust valve PA1 27 cylinder PA1 28 power piston PA1 29 connecting rod PA1 31 displacer PA1 34 exhaust port PA1 36 spring PA1 40 heat exchanging chamber PA1 41 water injector PA1 42 heating fluid inlet valve PA1 44 heating fluid exit valve PA1 46 expander transfer valve PA1 47 compressor transfer valve PA1 48 movable heat exchanger PA1 49 connecting rod PA1 50 heat exchanging chamber PA1 52 heating fluid inlet valve PA1 54 heating fluid exit valve PA1 56 expander transfer valve PA1 57 compressor transfer valve PA1 58 movable heat exchanger PA1 59 connecting rod PA1 60 heat exchanging chamber PA1 61 water injector PA1 62 heating fluid inlet valve PA1 64 heating fluid exit valve PA1 66 expander transfer valve PA1 67 compressor transfer valve PA1 68 movable heat exchanger PA1 69 connecting rod PA1 90 heat source PA1 a.) Heat is transferred into the engine without passing through any pressurized walls. PA1 b.) The heat transfer time can be very long. PA1 c.) The compressed working fluid can be cooled. PA1 d.) The engine can be operated so that the charge is almost fully expanded. PA1 e.) The heat for the engine can be supplied by solar, nuclear, garbage furnaces, or from waste heat from an industrial process. PA1 f.) The engine can be water injected PA1 g.) The injected water can be provided a long time to heat and vaporize.
Part PAC_2: DESCRIPTION OF THE MULTIPLE HEAT EXCHANGING CHAMBER ENGINE
Part PAR: This Multiple Heat Exchanging Chamber Engine (shown in FIG. 1) is a two stroke, external combustion, reciprocating, engine comprised of a commercial compressor (not shown), a commercial storage tank (not shown), a heat source 90, a power output shaft 4 and similar working units made up of two or more of heat exchanging chambers 40, 60, etc, and an expander 20. In alternate embodiments of the Multiple Heat Exchanging Chamber Engine the compressor 10 and expander 20 are combined in cylinder 27.
Part PAR_2: There can be any number of heat exchanging chambers. Each of the heat exchanging chambers contains a movable heat exchanger, a heating fluid inlet valve, a heating fluid exit valve, an expander transfer valve, a compressor transfer valve, and a water injector. The movable heat exchangers and the heat exchanging chamber valves are moved by a low speed shaft 6 driven through a gear box 2 from expander 20. The speed of low speed shaft 6 and hence the gear ratio of gear box 2 is determined by the number of heat exchanging chambers. The ratio of the speed of low speed shaft 6 to the speed of power output shaft 4 is one divided by the number of heat exchanging chambers; therefore in an engine with two heat exchanging chambers, low speed shaft 6 would travel at one half the speed of power output shaft 4, and likewise an engine with nine heat exchanging chambers would have low speed shaft 6 traveling at one ninth the speed of power output shaft 4.
Part PAR_3: The working fluid that is expected to be employed in this Multiple Heat Exchanging Chamber Engine is air; however, this working fluid could be any gas or any mixture of gases and, after water injection, steam. The working fluid is sometimes referred to as air, or as the charge. After expansion the charge is referred to as exhaust gases. The heating fluid may be any gas, or combination of gases including air. FIGS. 1-24 illustrate schematically an external combustion engine suitable for practice of this invention. Only one set of components for such an engine is illustrated; however, what is illustrated will function as a complete engine if it has an inertial load. It will be understood that this is merely representative of one set of components. A plurality of such structures joined together would make up a larger engine. Other portions of the engine are conventional. Thus, the bearings, seals etc. of the engine are not specifically illustrated. The valves illustrated are but one type out of many that could be used.
Part PAR_4: The preferred embodiment of the Multiple Heat Exchanging Chamber Engine is shown with water injection. It will operate without water injection. The other embodiments of the Multiple Heat Exchanging Chamber Engine are shown without water injection, but they can also be operated with water injection for increased power output.
Part PAR_5: The engine can be operated in a closed cycle operation (where the working fluid being exhausted is cooled, water removed, compressed, and returned). And the heater can be operated closed cycle (where the heating fluid is returned). The engine can be operated in a closed cycle operation for the working fluid and open cycle operation for the heating fluid. The engine can be operated in an open cycle operation for the working fluid and closed cycle operation for the heating fluid. Of course the engine can be operated in an open cycle operation for the working fluid and an open cycle operation for the heating fluid.
Part PAL: FIGS. 1 to 5--Description of Preferred Embodiment
Part PAR_6: This Multiple Heat Exchanging Chamber Engine is a two stroke, external combustion, reciprocating, engine. FIG. 1, the preferred embodiment of the Multiple Heat Exchanging Chamber Engine, is an engine comprised of a heat source 90, commercial compressor (not shown), a commercial storage tank (not shown), a power output shaft 4 and similar working units made up of two heat exchanging chambers 40 and 60, and an expander 20. The compressor is any compressor that can compress a fluid such as air. It can be a piston type, rotary, etc. and more important, it can be an isothermal compressor. The storage tank is to smooth out the pressure supply, and to make sure an adequate supply of working fluid is available to heat exchanging chambers 40 and 60. Heat source 90 is anything that provides a hot heating fluid. Heat exchanging chamber 40 contains four valves: heating fluid inlet valve 42 which allows the heating fluid into heat exchanging chamber 40; heating fluid exit valve 44 which allows the heating fluid out; compressor transfer valve 47 which allows compressed working fluid in; and expander transfer valve 46 which allows hot working fluid out. Heat exchanging chamber 40 also contains a water injector 41 and movable heat exchanger 48 which is heated by the heating fluid as it moves toward heating fluid inlet valve 42 and heats the compressed working fluid as it moves away from heating fluid inlet valve 42. Movable heat exchanger 48 is moved by low speed shaft 6 through connecting rod 49. Heat exchanging chamber 60 is the same as heat exchanging chamber 40 it also contains four valves: heating fluid inlet valve 62 which allows the heating fluid in; heating fluid exit valve 64 which allows the heating fluid out; compressor transfer valve 67 which allows compressed working fluid in; and expander transfer valve 66 which allows hot working fluid out. Heat exchanging chamber 60 also contains water injector 61 and movable heat exchanger 68 which is heated by the heating fluid as it moves toward heating fluid inlet valve 62 and heats the compressed working fluid as it moves away from heating fluid inlet valve 62. Movable heat exchanger 68 is moved by low speed shaft 6 through connecting rod 69. Expander 20 is cylinder 27 that is closed at one end, and contains exhaust valve 24, power piston 28, connecting rod 29, and power output shaft 4 which powers gear box 2, low speed shaft 6, and whatever load (not shown) is attached.
Part PAL_2: FIGS. 1 to 5--Operation of Preferred Embodiment
Part PAR_7: FIG. 1 depicts in detail the preferred embodiment of the Multiple Heat Exchanging Chamber Engine. To describe the operation of the individual sequence of the heat exchanging chambers, simplified versions of the preferred embodiment of the Multiple Heat Exchanging Chamber Engine FIGS. 2 to 5 will be used.
Part PAR_8: FIG. 2 is a simplified version of FIG. 1 with less lines, and shows the positions of low speed shaft 6 and power output shaft 4. FIG. 2 shows the Multiple Heat Exchanging Chamber Engine at the start of an expansion cycle with compressed working fluid moving into heat exchanging chamber 60 through compressor transfer valve 67. Movable heat exchanger 68 stays near the bottom of heat exchanging chamber 60 as it moves to the bottom and back up a little way. Hot working fluid is coming from heat exchanging chamber 40. Movable heat exchanger 48 stays near the top of heat exchanging chamber 40 as it moves to the top and back down a little way. The hot working fluid moves into expander 20 and forces power piston 28 down providing output power via connecting rod 29 and power output shaft 4.
Part PAR_9: FIG. 3 shows the Multiple Heat Exchanging Chamber Engine at the end of the above expansion cycle. Power piston 28 will move up and exhaust the spent working fluid through exhaust valve 24. The heating fluid, coming in heating fluid inlet valve 42 and flowing through heat exchanging chamber 40 and out heating fluid exit valve 44, heats up movable heat exchanger 48 as movable heat exchanger 48 moves towards heating fluid inlet valve 42. In heat exchanging chamber 60 water injection takes place, and hot movable heat exchanger 68 moves through the steam and compressed working fluid heating them up.
Part PAR_10: FIG. 4 shows the Multiple Heat Exchanging Chamber Engine at the start of another expansion cycle with compressed working fluid moving into heat exchanging chamber 40 through compressor transfer valve 47. Movable heat exchanger 48 stays near the bottom of heat exchanging chamber 40 as it moves to the bottom and back up a little way. Hot working fluid is coming from heat exchanging chamber 60. Movable heat exchanger 68 stays near the top of heat exchanging chamber 60 as it moves to the top and back down a little way. The hot working fluid moves into expander 20 and forces power piston 28 down providing output power via connecting rod 29 and power output shaft 4.
Part PAR_11: FIG. 5 shows the Multiple Heat Exchanging Chamber Engine at the end of the above expansion cycle. Power piston 28 will move up and exhaust the spent working fluid through exhaust valve 24. The heating fluid, coming in heating fluid inlet valve 62 and flowing through heating heat exchanging chamber 60 and out heating fluid exit valve 64, heats up movable heat exchanger 68 as movable heat exchanger 68 moves towards heating fluid inlet valve 62. In heat exchanging chamber 40 water injection takes place, and hot movable heat exchanger 48 moves through the steam and compressed working fluid heating them up.
Part PAL_3: Description--FIGS. 6 to 12--First Alternate Embodiment
Part PAR_12: FIG. 6, the first alternate embodiment of the Multiple Heat Exchanging Chamber Engine, is shown to illustrate that the engine can have any number of heat exchanging chambers by adding the heat exchanging chambers and changing the gear box ratio. It is an engine comprised of a heat source 90, commercial compressor (not shown), a commercial storage tank (not shown), a power output shaft 4 and similar working units made up of three heat exchanging chambers 40, 50 and 60, and an expander 20. The compressor is any compressor that can compress a fluid such as air. It can be a piston type, rotary, etc. and more important, it can be an isothermal compressor. The storage tank is to smooth out the pressure supply, and to make sure an adequate supply of working fluid is available to heat exchanging chambers 40, 50 and 60. Heat source 90 is anything that provides a hot heating fluid. Heat exchanging chamber 40 contains four valves: heating fluid inlet valve 42 which allows the heating fluid into heat exchanging chamber 40; heating fluid exit valve 44 which allows the heating fluid out; compressor transfer valve 47 which allows compressed working fluid in; and expander transfer valve 46 which allows hot working fluid out. Heat exchanging chamber 40 also movable heat exchanger 48 which is heated by the heating fluid as it moves toward heating fluid inlet valve 42 and heats the compressed working fluid as it moves away from heating fluid inlet valve 42. Movable heat exchanger 48 is moved by low speed shaft 6 through connecting rod 49. Heat exchanging chamber 50 is the same as heat exchanging chamber 40 it also contains four valves: heating fluid inlet valve 52 which allows the heating fluid in; heating fluid exit valve 54 which allows the heating fluid out; compressor transfer valve 57 which allows compressed working fluid in; and expander transfer valve 56 which allows hot working fluid out. Heat exchanging chamber 50 also movable heat exchanger 58 which is heated by the heating fluid as it moves toward heating fluid inlet valve 52 and heats the compressed working fluid as it moves away from heating fluid inlet valve 52. Movable heat exchanger 58 is moved by low speed shaft 6 through connecting rod 59. Heat exchanging chamber 60 is the same as heat exchanging chamber 40 it also contains four valves: heating fluid inlet valve 62 which allows the heating fluid in; heating fluid exit valve 64 which allows the heating fluid out; compressor transfer valve 67 which allows compressed working fluid in; and expander transfer valve 66 which allows hot working fluid out. Heat exchanging chamber 60 also contains movable heat exchanger 68 which is heated by the heating fluid as it moves toward heating fluid inlet valve 62 and heats the compressed working fluid as it moves away from heating fluid inlet valve 62. Movable heat exchanger 68 is moved by low speed shaft 6 through connecting rod 69. Expander 20 is cylinder 27 that is closed at one end, and contains exhaust valve 24, power piston 28, connecting rod 29, and power output shaft 4 which powers gear box 2, low speed shaft 6, exhaust valve 24, and whatever load (not shown) is attached.
Part PAL_4: FIGS. 6 to 12--Operation of the First Alternate Embodiment
Part PAR_13: FIG. 6 depicts in detail the first alternate embodiment of the Multiple Heat Exchanging Chamber Engine. To describe the operation of the individual sequence of the heat exchanging chambers, simplified versions of the first alternate embodiment of the Multiple Heat Exchanging Chamber Engine FIGS. 7 to 12 will be used.
Part PAR_14: FIG. 7 is a simplified version of FIG. 6 with less lines, and shows the positions of low speed shaft 6 and power output shaft 4. FIG. 7 shows the Multiple Heat Exchanging Chamber Engine at the start of an expansion cycle with hot working fluid coming from heat exchanging chamber 40. Movable heat exchanger 48 moves to the top of heat exchanging chamber 40 and back down a little way; thus it stays near the top of heat exchanging chamber 40. The hot working fluid moves into expander 20 and forces power piston 28 down providing output power via power output shaft 4. In heat exchanging chamber 50, movable heat exchanger 58 continues to move through the hot heating fluid. In heat exchanging chamber 60, hot movable heat exchanger 68 moves through and heats the compressed working fluid.
Part PAR_15: FIG. 8 shows the Multiple Heat Exchanging Chamber Engine at the end of the above expansion cycle. Power piston 28 will move up and exhaust the spent working fluid through exhaust valve 24. The heating fluid, coming in heating fluid inlet valve 42 and flowing through heat exchanging chamber 40 and out heating fluid exit valve 44, heats up movable heat exchanger 48 as movable heat exchanger 48 moves towards heating fluid inlet valve 42. In heat exchanging chamber 50 compressed working fluid moves in through compressor transfer valve 57. Movable heat exchanger 58 moves to the bottom of heat exchanging chamber 50 and back up a little way; thus it stays near the bottom of heat exchanging chamber 50. In heat exchanging chamber 60, hot movable heat exchanger 68 continues to move through and heat the compressed working fluid.
Part PAR_16: FIG. 9 shows the Multiple Heat Exchanging Chamber Engine at the start of another expansion cycle with hot working fluid coming from heat exchanging chamber 60. Movable heat exchanger 68 moves to the top of heat exchanging chamber 60 and back down a little way; thus it stays near the top of heat exchanging chamber 60. The hot working fluid moves into expander 20 and forces power piston 28 down providing output power via power output shaft 4. In heat exchanging chamber 40, movable heat exchanger 48 continues to move through the hot heating fluid. In heat exchanging chamber 50, hot movable heat exchanger 58 moves through and heats the compressed working fluid.
Part PAR_17: FIG. 10 shows the Multiple Heat Exchanging Chamber Engine at the end of the above expansion cycle. Power piston 28 will move up and exhaust the spent working fluid through exhaust valve 24. The heating fluid, coming in heating fluid inlet valve 62 and flowing through heat exchanging chamber 60 and out heating fluid exit valve 64, heats up movable heat exchanger 68 as movable heat exchanger 68 moves towards heating fluid inlet valve 62. In heat exchanging chamber 40 compressed working fluid moves in through compressor transfer valve 47. Movable heat exchanger 48 moves to the bottom of heat exchanging chamber 40 and back up a little way; thus it stays near the bottom of heat exchanging chamber 40. In heat exchanging chamber 50, hot movable heat exchanger 58 continues to move through and heat the compressed working fluid.
Part PAR_18: FIG. 11 shows the Multiple Heat Exchanging Chamber Engine at the start of an expansion cycle with hot working fluid coming from heat exchanging chamber S0. Movable heat exchanger 58 moves to the top of heat exchanging chamber 50 and back down a little way; thus it stays near the top of heat exchanging chamber 50. The hot working fluid moves into expander 20 and forces power piston 28 down providing output power via power output shaft 4. In heat exchanging chamber 60, movable heat exchanger 68 continues to move through the hot heating fluid. In heat exchanging chamber 40, hot movable heat exchanger 48 moves through and heats the compressed working fluid.
Part PAR_19: FIG. 12 shows the Multiple Heat Exchanging Chamber Engine at the end of the above expansion cycle. Power piston 28 will move up and exhaust the spent working fluid through exhaust valve 24. The heating fluid, coming in heating fluid inlet valve 52 and flowing through heat exchanging chamber 50 and out heating fluid exit valve 54, heats up movable heat exchanger 58 as movable heat exchanger 58 moves towards heating fluid inlet valve 52. In heat exchanging chamber 60 compressed working fluid moves in through compressor transfer valve 67. Movable heat exchanger 68 moves to the bottom of heat exchanging chamber 60 and back up a little way; thus it stays near the bottom of heat exchanging chamber 60. In heat exchanging chamber 40, hot movable heat exchanger 48 continues to move through and heat the compressed working fluid.
Part PAL_5: FIGS. 13 to 17--Description of the Second Alternate Embodiment
Part PAR_20: FIG. 13, the second alternate embodiment of the Multiple Heat Exchanging Chamber Engine, is shown to illustrate that the engine can have both the expander and the compressor in the same cylinder. In this embodiment, the engine can have any even number of heat exchanging chambers by adding the heat exchanging chambers and changing low speed shaft 6 and the gear box ratio. This Multiple Heat Exchanging Chamber Engine is a two stroke, external combustion, reciprocating, engine. FIG. 13, the second alternate embodiment of the Multiple Heat Exchanging Chamber Engine, is comprised of a heat source 90, cylinder 27 that is closed at one end, and contains compressor 10,with air inlet valve 12, expander 20, with exhaust valve 24, power piston 28, connecting rod 29, power output shaft 4 which powers gear box 2, exhaust valve 24, and whatever load (not shown) is attached, low speed shaft 6, and two heat exchanging chambers 40 and 60. Heat source 90 is anything that provides a hot heating fluid. Heat exchanging chamber 40 contains four valves: heating fluid inlet valve 42 which allows the heating fluid into heat exchanging chamber 40; heating fluid exit valve 44 which allows the heating fluid out; compressor transfer valve 47 which allows compressed working fluid in; and expander transfer valve 46 which allows hot working fluid out. Heat exchanging chamber 40 also contains movable heat exchanger 48 which is heated by the heating fluid as it moves toward heating fluid inlet valve 42 and heats the compressed working fluid as it moves away from heating fluid inlet valve 42. Movable heat exchanger 48 is moved by low speed shaft 6 through connecting rod 49. Heat exchanging chamber 60 is the same as heat exchanging chamber 40 it also contains four valves: heating fluid inlet valve 62 which allows the heating fluid in; heating fluid exit valve 64 which allows the heating fluid out; compressor transfer valve 67 which allows compressed working fluid in; and expander transfer valve 66 which allows hot working fluid out. Heat exchanging chamber 60 also contains movable heat exchanger 68 which is heated by the heating fluid as it moves toward heating fluid inlet valve 62 and heats the compressed working fluid as it moves away from heating fluid inlet valve 62. Movable heat exchanger 68 is moved by low speed shaft 6 through connecting rod 69.
Part PAL_6: FIGS. 13 to 17--Operation of the Second Alternate Embodiment
Part PAR_21: FIG. 13 depicts in detail the second alternate embodiment of the Multiple Heat Exchanging Chamber Engine. To describe the operation of the individual sequence of the heat exchanging chambers, simplified versions of the second alternate embodiment of the Multiple Heat Exchanging Chamber Engine FIGS. 14 to 17 will be used.
Part PAR_22: FIG. 14 is a simplified version of FIG. 13 with less lines, and shows the positions of low speed shaft 6 and power output shaft 4. FIG. 14 shows the Multiple Heat Exchanging Chamber Engine at the start of an expansion cycle with compressed working fluid moving into heat exchanging chamber 60 through compressor transfer valve 67. Movable heat exchanger 68 stays near the bottom of heat exchanging chamber 60 as it moves to the bottom and back up a little way. Hot working fluid is coming from heat exchanging chamber 40. Movable heat exchanger 48 stays near the top of heat exchanging chamber 40 as it moves to the top and back down a little way. The hot working fluid moves into expander 20 and forces power piston 28 down providing output power via power output shaft 4. Power piston 28 also acts as a compressor piston compressing the air in compressor 10 into heat exchanging chamber 60 through compressor transfer valve 67.
Part PAR_23: FIG. 15 shows the Multiple Heat Exchanging Chamber Engine at the end of the above expansion cycle. Power piston 28 will move up, exhaust the spent working fluid through exhaust valve 24, and suck in fresh working fluid through air inlet valve 12. The heating fluid, coming in heating fluid inlet valve 42 and flowing through heat exchanging chamber 40 and out heating fluid exit valve 44, heats up movable heat exchanger 48 as movable heat exchanger 48 moves towards heating fluid inlet valve 42. In heat exchanging chamber 60 hot movable heat exchanger 68 moves through the compressed working fluid heating it up.
Part PAR_24: FIG. 16 shows the Multiple Heat Exchanging Chamber Engine at the start of another expansion cycle with compressed working fluid moving into heat exchanging chamber 40 through compressor transfer valve 47. Movable heat exchanger 48 stays near the bottom of heat exchanging chamber 40 as it moves to the bottom and back up a little way. Hot working fluid is coming from heat exchanging chamber 60. Movable heat exchanger 68 stays near the top of heat exchanging chamber 60 as it moves to the top and back down a little way. The hot working fluid moves into expander 20 and forces power piston 28 down providing output power via power output shaft 4. Power piston 28 also acts as a compressor piston compressing the air in compressor 10 into heat exchanging chamber 40 through compressor transfer valve 47.
Part PAR_25: FIG. 17 shows the Multiple Heat Exchanging Chamber Engine at the end of the above expansion cycle. Power piston 28 will move up and exhaust the spent working fluid through exhaust valve 24, and suck in fresh working fluid through air inlet valve 12. The heating fluid, coming in heating fluid inlet valve 62 and flowing through heating heat exchanging chamber 60 and out heating fluid exit valve 64, heats up movable heat exchanger 68 as movable heat exchanger 68 moves towards heating fluid inlet valve 62. In heat exchanging chamber 40 hot movable heat exchanger 48 moves through the compressed working fluid heating it up.
Part PAL_7: FIGS. 18 to 24--Description of the Third Alternate Embodiment
Part PAR_26: FIG. 18, the third alternate embodiment of the Multiple Heat Exchanging Chamber Engine, is shown to illustrate that the engine can have both the expander and the compressor in the same cylinder. The engine can have any odd number of heat exchanging chambers by adding the heat exchanging chambers and changing low speed shaft 6 and the gear box ratio. The third alternate embodiment of this Multiple Heat Exchanging Chamber Engine is a two stroke, external combustion, reciprocating, engine as shown in FIG. 18. It is comprised of cylinder 27 that is closed at one end, and contains air inlet valve 12, exhaust port 34, displacer 31, and power piston 28. Spring 36 is attached to cylinder 27 and when power piston 28 uncovers exhaust port 34 spring 36 moves displacer 31 down forcing out exhaust gases and sucking in fresh air through air inlet valve 12. When power piston 28 moves up displacer 31 it compresses spring 36 and the pressure inside cylinder 27 keeps displacer 31 up until power piston 28 again uncovers exhaust port 34. The third alternate embodiment of the engine also contains connecting rod 29, power output shaft 4 which powers gear box 2 and whatever load (not shown) is attached, low speed shaft 6, heat source 90, and three heat exchanging chambers 40, 50, and 60. Heat source 90 is anything that provides a hot heating fluid. Heat exchanging chamber 40 contains three valves: heating fluid inlet valve 42 which allows the heating fluid into heat exchanging chamber 40; heating fluid exit valve 44 which allows the heating fluid out; and expander transfer valve 46 which allows hot working fluid out and which also in this embodiment allows compressed working fluid in. Heat exchanging chamber 40 also contains movable heat exchanger 48 which is heated by the heating fluid as it moves toward heating fluid inlet valve 42 and heats the compressed working fluid as it moves away from heating fluid inlet valve 42. Movable heat exchanger 48 is moved by low speed shaft 6 through connecting rod 49. Heat exchanging chamber 50 is the same as heat exchanging chamber 40 it also contains three valves: heating fluid inlet valve 52 which allows the heating fluid in; heating fluid exit valve 54 which allows the heating fluid out; and expander transfer valve 56 which allows hot working fluid out and also allows compressed working fluid in. Heat exchanging chamber 50 also contains movable heat exchanger 58 which is heated by the heating fluid as it moves toward heating fluid inlet valve 52 and heats the compressed working fluid as it moves away from heating fluid inlet valve 52. Movable heat exchanger 58 is moved by low speed shaft 6 through connecting rod 59. Heat exchanging chamber 60 is the same as heat exchanging chamber 40 it also contains three valves: heating fluid inlet valve 62 which allows the heating fluid in; heating fluid exit valve 64 which allows the heating fluid out; and expander transfer valve 66 which allows hot working fluid out and also allows compressed working fluid in. Heat exchanging chamber 60 also contains movable heat exchanger 68 which is heated by the heating fluid as it moves toward heating fluid inlet valve 62 and heats the compressed working fluid as it moves away from heating fluid inlet valve 62. Movable heat exchanger 68 is moved by low speed shaft 6 through connecting rod 69.
Part PAL_8: FIGS. 18 to 24--Operation of the Third Alternate Embodiment
Part PAR_27: FIG. 18 depicts in detail the third alternate embodiment of the Multiple Heat Exchanging Chamber Engine. To describe the operation of the individual sequence of the heat exchanging chambers, simplified versions of the third alternate embodiment of the Multiple Heat Exchanging Chamber Engine FIGS. 19 to 24 will be used.
Part PAR_28: FIG. 19 is a simplified version of FIG. 18 with less lines, and shows the positions of low speed shaft 6 and power output shaft 4. FIG. 19 shows the Multiple Heat Exchanging Chamber Engine at the start of an expansion cycle with hot working fluid coming from heat exchanging chamber 40. Movable heat exchanger 48 moves to the top of heat exchanging chamber 40 and back down a little way; thus it stays near the top of heat exchanging chamber 40. The hot working fluid moves into cylinder 27 and forces power piston 28 down providing output power via connecting rod 29 and power output shaft 4. In heat exchanging chamber 50, movable heat exchanger 58 continues to move through the hot heating fluid. In heat exchanging chamber 60, hot movable heat exchanger 68 moves through and heats the compressed working fluid.
Part PAR_29: FIG. 20 shows the Multiple Heat Exchanging Chamber Engine at the end of the above expansion cycle. Displacer 31 has moved down and exhausted the spent working fluid through exhaust port 34. The heating fluid, coming in heating fluid inlet valve 42 and flowing through heat exchanging chamber 40 and out heating fluid exit valve 44, heats up movable heat exchanger 48 as movable heat exchanger 48 moves towards heating fluid inlet valve 42. In heat exchanging chamber 50 compressed working fluid from power piston 28 and displacer 31 moves in through expander transfer valve 56. Movable heat exchanger 58 moves to the bottom of heat exchanging chamber 50 and back up a little way; thus it stays near the bottom of heat exchanging chamber 50. In heat exchanging chamber 60, hot movable heat exchanger 68 continues to move through and heat the compressed working fluid.
Part PAR_30: FIG. 21 shows the Multiple Heat Exchanging Chamber Engine at the start of another expansion cycle with hot working fluid coming from heat exchanging chamber 60. Movable heat exchanger 68 moves to the top of heat exchanging chamber 60 and back down a little way; thus it stays near the top of heat exchanging chamber 60. The hot working fluid moves into cylinder 27 and forces power piston 28 down providing output power via connecting rod 29 and power output shaft 4. In heat exchanging chamber 40, movable heat exchanger 48 continues to move through the hot heating fluid. In heat exchanging chamber 50, hot movable heat exchanger 58 moves through and heats the compressed working fluid.
Part PAR_31: FIG. 22 shows the Multiple Heat Exchanging Chamber Engine at the end of the above expansion cycle. Displacer 31 has moved down and exhausted the spent working fluid through exhaust port 34. The heating fluid, coming in heating fluid inlet valve 62 and flowing through heat exchanging chamber 60 and out heating fluid exit valve 64, heats up movable heat exchanger 68 as movable heat exchanger 68 moves towards heating fluid inlet valve 62. In heat exchanging chamber 40 compressed working fluid from power piston 28 and displacer 31 moves in through expander transfer valve 46. Movable heat exchanger 48 moves to the bottom of heat exchanging chamber 40 and back up a little way; thus it stays near the bottom of heat exchanging chamber 40. In heat exchanging chamber 50, hot movable heat exchanger 58 continues to move through and heat the compressed working fluid.
Part PAR_32: FIG. 23 shows the Multiple Heat Exchanging Chamber Engine at the start of an expansion cycle with hot working fluid coming from heat exchanging chamber 50. Movable heat exchanger 58 moves to the top of heat exchanging chamber 50 and back down a little way; thus it stays near the top of heat exchanging chamber 50. The hot working fluid moves into cylinder 27 and forces power piston 28 down providing output power via connecting rod 29 and power output shaft 4. In heat exchanging chamber 60, movable heat exchanger 68 continues to move through the hot heating fluid. In heat exchanging chamber 40, hot movable heat exchanger 48 moves through and heats the compressed working fluid.
Part PAR_33: FIG. 24 shows the Multiple Heat Exchanging Chamber Engine at the end of the above expansion cycle. Displacer 31 has moved down and exhausted the spent working fluid through exhaust port 34. The heating fluid, coming in heating fluid inlet valve 52 and flowing through heat exchanging chamber 50 and out heating fluid exit valve 54, heats up movable heat exchanger 58 as movable heat exchanger 58 moves towards heating fluid inlet valve 52. In heat exchanging chamber 60 compressed working fluid from power piston 28 and displacer 31 moves in through expander transfer valve 66. Movable heat exchanger 68 moves to the bottom of heat exchanging chamber 60 and back up a little way; thus it stays near the bottom of heat exchanging chamber 60. In heat exchanging chamber 40, hot movable heat exchanger 48 continues to move through and heat the compressed working fluid.
Part PAL_9: Conclusion
Part PAR_34: Accordingly, the reader will see that the two stroke engine with displacer meets the following objects and advantages:
Part PAR_35: Although the description above contains many specificities, these should not be construed as limiting the scope of the Multiple Heat Exchanging Chamber Engine but as merely providing illustrations of some of the presently preferred embodiments of this Multiple Heat Exchanging Chamber Engine.
Part PAR_36: Thus the scope of the Multiple Heat Exchanging Chamber Engine should be determined by the appended claims and their legal equivalents, rather than by the examples given.


{'bibliographic_information': "{'Patent Number': '06205788&', 'Series Code': '9', 'Application Number': '5917956', 'Application Type': '1', 'Art unit': '373', 'Application Filing Date': '20000612', 'Title of Invention': 'Multiple heat exchanging chamber engine', 'Issue Date': '20010327', 'Number of Claims': '11', 'Exemplary Claim Number(s)': '1', 'Primary Examiner': 'Nguyen; Hoang', 'Number of Drawing Sheets': '24', 'Number of figures': '24'}", 'source_file': './grant/2001/pftaps20010327_wk13.txt', 'source_data': 'USPTO-Grant'}