• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An energy generating system (1) comprising: a main piston system (1'), comprising, a first cylinder (14) comprising a first reciprocatable piston (15), wherein the first piston (15) divides the first cylinder (14) into a first (14a) and second (14b) variable space, wherein the first space (14a) comprises a first gaseous medium (140) a first energy transfer device 30a, a first heat exchanging system (11), a second cylinder (24) comprising a reciprocatable piston (25), wherein the second piston (25) divides the second cylinder (24) into a third (24a) and fourth (24b) variable space, wherein the third space (24a) comprises a second gaseous medium (240), a second energy transfer device 30b, a second heat exchanging system (21) in fluid connection with the third space (24a), wherein the energy generating system (1) is adapted to synchronize heating of the first gaseous medium (140) with cooling of the second gaseous medium (240) whereby the first and second energy transfer devices (30a, 30b) transfer the kinetic energy from the reciprocating movement of the reciprocatable pistons (15, 25) to an energy generating device (30).(Fig. 1)
    公开号:SE1650297A1
    申请号:SE1650297
    申请日:2016-03-07
    公开日:2017-09-08
    发明作者:Birging Torbjörn；Birging Lars；Björkman Jan
    申请人:Zigrid Ab；
    IPC主号:
    专利说明:

    [1] [0001] The present invention relates generally to an energy generating systemfor generating energy from temperature differences of fluids.
    [3] [0003] A drawback of known solutions is their limited ability and feasibility tosufficiently capture surplus of energy in temperature intervals for instance providedby waste heat in industrial processes or natural temperature difference in the environment.
    [4] [0004] An object of the present invention is to alleviate some of thedisadvantages of the prior art and to provide an energy generating system whichtransforms low temperature energy to kinetic energy based on temperaturedifferences. A further object of the present invention is to provide an energygenerating system whish transforms energy from temperature differences whereinthe warm side if the temperature difference exist below zero degrees Celsius. Afurther object of the present invention is to provide an energy generating system having a modular design adaptable to need and requirements.
    [5] [0005] According to one embodiment of the invention, an energy generatingsystem is provided, comprising: a main piston system, further comprising, a firstcylinder comprising a first reciprocatable piston, wherein the first piston sealablydivides the first cylinder into a first and second variable space, wherein the firstspace comprises a first gaseous medium and the second space comprises a fluidmedium, a first energy transfer device connected to the first cylinder, a first heatexchanging system in fluid connection with the first space, wherein the first heat exchanging system is adapted to alternately heat and cool the first gaseousmedium, whereby pressure in the first space is increased and reducedrespectively, a second cylinder comprising a reciprocatable piston, wherein thesecond piston sealably divides the second cylinder into a third and fourth variablespace, wherein the third space comprises a second gaseous medium and thefourth space comprises a fluid medium, a second energy transfer deviceconnected to the second cylinder, a second heat exchanging system in fluidconnection with the third space, wherein the second heat exchanging system isadapted to alternately heat and cool the second gaseous medium, wherebypressure in the third space is increased and reduced respectively, wherein theenergy generating system is adapted to control heating of the first gaseousmedium substantially simultaneously with cooling of the second gaseous mediumand conversely cooling of the first gaseous medium substantially simultaneouslywith heating of the second gaseous medium, whereby the resulting pressureincrease from heating and pressure reduction from cooling in the first space andthe third space respectively, causes the first piston and the second piston toreciprocate between an expansion movement during heating wherein the first andthird variable spaces increases, and a compression movement during coolingwherein the first and third variable spaces decreases, whereby the first andsecond energy transfer devices transfer kinetic energy from the reciprocatingmovement of the reciprocatable pistons to an energy generating device arrangedfor being in an energy-transfer connection to the first and second reciprocatablepistons.
    [6] [0006] According to one embodiment, the first and second energy transferdevices comprises a first and second fluid line respectively, respectivelyconnecting the second variable space and fourth variable space with a furtherpiston system, whereby the fluid lines, transfers the kinetic energy of thereciprocatable pistons via the further piston system, to the energy generatingdevice.
    [7] [0007] According to one embodiment, the second and fourth variable spaces of the main piston system, via the fluid lines are in fluid connection with a first cylinder of the further piston system via a valve device, and wherein the secondand fourth variable spaces of the main piston system, via the fluid lines are in fluidconnection with a second cylinder of the further piston system via a valve device,wherein the valve devices are controlled by a valve control unit.
    [8] [0008] According to one embodiment, the first cylinder of the further pistonsystem comprises a reciprocatable piston, sealably dividing the cylinder into a firstand second variable space, wherein the first space comprises a fluid medium, andthe second space comprises a fluid medium, wherein the second cylinder of thefurther piston system comprises a reciprocatable piston, sealably dividing thesecond cylinder into a third and fourth variable space, wherein the third spacecomprises a fluid medium, and the fourth space comprises a fluid medium,wherein the second space is in fluid connection with the fourth space, wherein thesecond and fourth variable spaces of the main piston system, via the fluid lines,are in fluid connection with the first and third variable spaces of the further pistonsystem.
    [9] [0009] According to one embodiment, the second and fourth spaces of the mainpiston system are in fluid connection with a plurality of further pistons systems,comprising at least a first and second further piston system, in a similararrangement as described in claims 2-4.
    [10] [0010] According to one embodiment, a movement cycle of the reciprocation ofthe pistons of the further piston system is time shifted in relation to the cycle time of at least one of the plurality of further piston systems.
    [11] [0011] According to one embodiment, the energy generating system furthercomprising a second main piston system similar to the first piston systemaccording to any of the preceding claims 1-14, wherein the second main pistonsystem is arranged to the further piston system according to claims 2-4, wherebythe first and second energy transfer devices of the second main piston systemtransfer the kinetic energy from the reciprocating movement of the reciprocatablepistons to the energy generating device arranged for being in an energy-transfer connection to the first and second reciprocatable pistons, wherein a movement cycle of the reciprocation of the pistons of the second main piston system is timeshifted in relation to the movement cycle of the pistons of the first main pistonsystem.
    [12] [0012] According to one embodiment, the energy generating system furthercomprising a second main piston system similar to the first main piston systemaccording to any of the embodiments described herein, wherein the second mainpiston system is arranged to the second further piston system, according to any ofthe embodiments described herein, wherein a movement cycle of the reciprocationof the pistons of the second main piston system is time shifted in relation to the movement cycle of the pistons of the first main piston system.
    [13] [0013] According to one embodiment, a preload cylinder, similar to the firstcylinder of the further piston system as described in any of the embodimentsherein, is arranged in fluid connection with the second space and the fourthvariable space of the first cylinder of the further piston system for generating apreload to the fluid of the second space and the fourth variable space.
    [14] [0014] According to one embodiment, the first energy transfer device isconnected to the first reciprocatable piston, and the second energy transfer deviceis connected to the second reciprocatable piston, wherein the second space is influid connection with the fourth space, whereby during expansion movement of thefirst piston the fluid medium is forced out of the second space into the fourth spaceaiding a compression movement of the second piston so that the third space isdecreased, and whereby during expansion movement of the second piston thefluid medium is forced out of the fourth space into the second space aiding acompression movement of the first piston so that the first space is decreased.
    [15] [0015] According to one embodiment, the first heat exchanging systemcomprises a first heat exchanger, comprising a first valve to which a line for a hotmedium and a line for cold medium is connected for selectively receiving a hotmedium and a cold medium into the first heat exchanger, wherein the second heatexchanging system comprises a second heat exchanger comprising a second valve to which a line for a hot medium and a line for a cold medium is connected for selectively receiving a hot medium and a cold medium into the second heatexchanger, wherein the first and second valves are controlled by a valve control unit.
    [16] [0016] According to one embodiment, the first heat exchanger is in fluidconnection with the cylinder via a third valve, and the second heat exchanger is influid connection with the cylinder via a fourth valve, wherein the opening andclosing of valves are controllable by the valve control unit.
    [17] [0017] According to one embodiment, the first heat exchanging system and thesecond heat exchanging system comprises two separate heat exchangersrespectively, wherein a first heat exchanger of the first system is adapted to heatthe first gaseous medium, and a first heat exchanger of the second system isadapted to heat the second gaseous medium, and a second heat exchanger of thefirst system is adapted to cool the first medium, and a second heat exchanger of the second system is adapted to cool the third gaseous medium.
    [18] [0018] According to one embodiment, the first heat exchanging system isarranged within the first variable space of the cylinder, and/or the second heatexchanging system is arranged within the third variable space of the cylinder.
    [19] [0019] According to one embodiment, the first heat exchanging system isarranged externally of the cylinder, and/or the second heat exchanging system isarranged externally of the cylinder.
    [20] [0020] According to one embodiment, the fluid medium of the second space and the fluid medium of the fourth space is an incompressible liquid.
    [21] [0021] According to one embodiment, the fluid medium of the first space and the fluid medium of the third space is an incompressible liquid.
    [22] [0022] According to one embodiment, the fluid medium of the second space and the fluid medium of the fourth space is an incompressible liquid.
    [23] [0023] According to one embodiment, the liquid is oil.
    [24] [0024] According to one embodiment, the gaseous medium, is propane orR410A.
    [25] [0025] According to one embodiment, the gaseous medium, undergoes a phasetransfer into a liquid phase during the compression movement and back into a gaseous phase during the expansion movement.
    [26] [0026] According to one embodiment, the fluid medium is a gaseous medium, e.g. nitrogen.
    [27] [0027] According to one embodiment, the fluid medium comprises a gaseous medium.
    [28] [0028] According to one embodiment, the hot medium is hot water and the cold medium is cold water.
    [29] [0029] According to one embodiment, the energy transfer devices comprisesone of a mechanical transfer device such as a crank-Iink mechanism, magnets or coils.
    [30] [0030] According to one embodiment, the energy generating device comprises one of a rotating shaft in a crank-Iink mechanism, magnets, coils, and a generator.
    [31] [0031] ln the following, a detailed description of the invention will be given. lnthe drawing figures, like reference numerals designate identical or correspondingelements throughout the several figures. lt will be appreciated that these figuresare for illustration only and are not in any way restricting the scope of the invenfion.
    [32] [0032] Fig. 1 shows a side view of an energy generating system according to the invention.[0033] Fig. 2 shows a side view of an energy generating system.
    [34] [0034] Fig. 3 shows a side view of an energy generating system.
    [35] [0035] Fig. 4 shows a side view of an energy generating system.[0036] Fig. 5 shows a side view of an energy generating system.[0037] Fig. 6 shows a side view of an energy generating system.
    [38] [0038] Fig. 7 shows a side view of an energy generating system.
    [39] [0039] ln the following, a detailed description of the invention will be given. lnthe drawing figures, like reference numerals designate identical or correspondingelements throughout the several figures. lt will be appreciated that these figuresare for illustration only and are not in any way restricting the scope of the invenfion.
    [40] [0040] Fig. 1a shows a side view of an energy generating system 1 forgenerating energy from temperature differences of fluids. According to oneembodiment, the energy generating system 1 comprises a first cylinder 14comprising a first reciprocatable piston 15, wherein the first piston 15 sealablydivides the first cylinder 14 into a first 14a and second 14b variable space, whereinthe first space 14a comprises a first gaseous medium 140 and the second space14b comprises a fluid medium 145. Further, the energy generating system 1comprises a first energy transfer device 30a connected to the first cylinder 14.
    [41] [0041] The energy generating system 1 further comprises a first heatexchanging system 11 in fluid connection with the first space 14a, wherein the firstheat exchanging system 11 is adapted to alternately heat and cool the firstgaseous medium 140, whereby pressure in the first space 14a is increased andreduced respectively, a second cylinder 24 comprising a reciprocatable piston 25,wherein the second piston 25 sealably divides the second cylinder 24 into a third24a and fourth 24b variable space, wherein the third space 24a comprises asecond gaseous medium 240 and the fourth space 24b comprises a fluid medium245. The energy generating system 1 further comprises a second energy transfer device 30b connected to the second cylinder 24, and a second heat exchanging system 21 in fluid connection with the third space 24a, wherein the second heatexchanging system 21 is adapted to alternately heat and cool the second gaseousmedium 240, whereby pressure in the third space 24a is increased and reducedrespectiveiy, wherein the energy generating system 1 is adapted to control heatingof the first gaseous medium 140 substantially simultaneously with cooling of thesecond gaseous medium 240 and conversely cooling of the first gaseous medium140 substantially simultaneously with heating of the second gaseous medium 240,whereby the resu|ting pressure increase from heating and pressure reduction fromcooling in the first space 14a and the third space 24a respectively, causes the firstpiston 15 and the second piston 25 to reciprocate between an expansionmovement during heating wherein the first and third variabie spaces 14a, 24aincreases, and a compression movement during cooling wherein the first and thirdvariable spaces 14a, 24a decreases, whereby the first and second energy transferdevices 30a, 30b transfer the kinetic energy from the reciprocating movement ofthe reciprocatable pistons 15, 25 to an energy generating device 30 arranged forbeing in an energy-transfer connection to the first and second reciprocatablepistons 15, 25.
    [42] [0042] According to one embodiment, the energy generating system 1 isadapted to synchronize heating of the first gaseous medium 140 with cooling ofthe second gaseous medium 240 and conversely cooling of the first gaseousmedium 140 with heating of the second gaseous medium 240, whereby theresu|ting pressure increase from heating and pressure reduction from cooling inthe first space 14a and the third space 24a respectively, causes the first piston 15and the second piston 25 to reciprocate between an expansion movement duringheating wherein the first and third variabie spaces 14a, 24a increases, and acompression movement during cooling wherein the first and third variabie spaces14a, 24a decreases, whereby the first and second energy transfer devices 30a,30b transfer the kinetic energy from the reciprocating movement of thereciprocatable pistons 15, 25 to an energy generating device 30 arranged forbeing in an energy-transfer connection to the first and second reciprocatablepistons 15, 25.
    [43] [0043] According to one embodiment, the stroke length of the reciprocatablepistons 15, 25 are 50-70cm.
    [44] [0044] According to one embodiment, the gaseous medium 140, 240 is propaneor R410A. According to one embodiment, the selection of the gaseous medium isdependent on the temperature range of the mediums of the heat exchangingsystems, 11, 21. According to one embodiment, the gaseous medium 140, 240undergoes a phase transfer into a liquid phase during the compression movementand back into a gaseous phase during the expansion movement.
    [45] [0045] According to one embodiment, the pressure of the gaseous mediumduring heating, i.e. as a result of the pressure increase, is 15-16 Bar or 1,5-1,6MPa when using propane. According to one embodiment, the pressure of thegaseous medium during heating, i.e. as a result of the pressure increase, is 30-40Bar or 3-4 MPa when using propane. According to one embodiment, the pressureof the gaseous medium during cooling, i.e. as a result of the pressure reduction, is2-4 Bar or 0,2-0,4 MPa when using propane. According to one embodiment, thepressure of the gaseous medium during cooling, i.e. as a result of the pressurereduction, is 2-4 Bar or 0,2-0,4 MPa when using propane.
    [46] [0046] According to one embodiment, the fluid medium 145 of the second space14b and the fluid medium 245 of the fourth space 24b is an incompressible liquid.According to one embodiment, the liquid is oil. According to one embodiment, thefluid medium 145, 245 comprises a gaseous medium.
    [47] [0047] According to one embodiment, the energy transfer devices 30a, 30b,30c, 30d comprises one of a mechanical transfer device such as a crank-linkmechanism, magnets or coils. According to one embodiment, the energygenerating device 30 comprises one of a rotating shaft in a crank-link mechanism,magnets, coils, and a generator, for generating energy from the movement of thereciprocatable pistons 15, 25,35, 45.
    [48] [0048] According to one embodiment, the first energy transfer device 30a isconnected to the first reciprocatable piston 15, and the second energy transfer device 30b is connected to the second reciprocatable piston 25, wherein thesecond space 14b is in fluid connection with the fourth space 24b, whereby duringexpansion movement of the first piston 15 the fluid medium is forced out of thesecond space 14b into the fourth space aiding a compression movement of thesecond piston 25 so that the third space is decreased, and whereby duringexpansion movement of the second piston 25 the fluid medium is forced out of thefourth space 14b into the second space 14b aiding a compression movement ofthe first piston 25 so that the first space is decreased.
    [49] [0049] According to one embodiment, the first heat exchanging system 11comprises a first heat exchanger 11a, comprising a first valve 12 to which a line12a for a hot medium and a line 12b for cold medium is connected for selectivelyreceiving a hot medium, such as e.g. a fluid, and a cold medium, such as e.g. afluid, into the first heat exchanger 11, wherein the second heat exchanging system21 comprises a second heat exchanger 21a comprising a second valve 22 towhich a line 22a for a hot medium and a line 22b for a cold medium is connectedfor selectively receiving a hot medium and a cold medium into the second heatexchanger 21. According to one embodiment, the first and second valves 12, 22are controlled by a valve control unit 50. According to one embodiment, the hotmedium is hot water and the cold medium is cold water. According to oneembodiment, the cold medium has a temperature of 4°-10°. According to oneembodiment, the hot medium has a temperature of 15°-40°. According to oneembodiment, the temperature difference between the hot medium and coldmedium, AT, is in the range of 20°C-5°C difference. According to one embodiment,the warm side if the temperature difference exist below zero degrees Celsius.According to one embodiment, the cold water is ground water. According to oneembodiment, the hot water is waste water or water heated by being exposed tosolar energy or more specifically by means of solar collectors.
    [50] [0050] According to one embodiment, as seen in Fig. 1, the first heat exchanger11 is in fluid connection with the cylinder 14 via a third valve 13, and the second heat exchanger 21 is in fluid connection with the cylinder 24 via a fourth valve 23, 11 wherein the opening and closing of valves 13, 23 are controllable by the valvecontrol unit 50.
    [51] [0051] Fig. 2 discloses the energy generating system 1 of Fig. 1, wherein thethird valve 13 and the fourth valve 23 have been removed and the first heatexchanger 11 is in direct fluid connection with the cylinder 14, and the second heatexchanger 21 is in direct fluid connection with the cylinder 24.
    [52] [0052] Fig. 1 and Fig. 2 discloses the energy generating system 1 wherein thefirst heat exchanging system 11 is arranged externally of the cylinder 14, and/or the second heat exchanging system 21 is arranged externally of the cylinder 24.
    [53] [0053] According to one embodiment, the first heat exchanging system 11 andthe second heat exchanging system 21 comprises two separate heat exchangersrespectively (not shown), wherein a first heat exchanger of the first system 11 isadapted to heat the first 140 gaseous medium, and a first heat exchanger of thesecond system 21 is adapted to heat the second 240 gaseous medium, and asecond heat exchanger of the first system 11 is adapted to cool the first medium140, and a second heat exchanger of the second system 21 is adapted to cool thesecond 240 gaseous medium.
    [54] [0054] Fig. 3 discloses the energy generating system of Fig. 1, wherein the firstheat exchanging system 11 is arranged within the first variable space 14a of thecylinder 14, and/or the second heat exchanging system 21 is arranged within thethird variable space 24b of the cylinder 24.
    [55] [0055] Fig. 4 shows the energy generating system 1 according to oneembodiment, wherein the first 30a and second 30b energy transfer devicescomprises a first 30a, 30a1, 30a2 and second 30b, 30b1, 30b2 fluid linerespectively, respectively connecting the second variable space 14b and fourthvariable space 24b with a further piston system 2, whereby the fluid lines 30a1,30b1, 30a2, 30b2 transfers the kinetic energy of the reciprocatable pistons 15, 25via the further piston system 2, to the energy generating device 30. 12
    [56] [0056] Thus, according to one embodiment, again as seen in Fig. 4, the energygenerating system 1 comprises a further piston system 2. wherein the furtherpiston system 2 comprises: a first cylinder 34 comprising a first reciprocatablepiston 35, wherein the first piston 35 sealably divides the first cylinder 34 into afirst 34a and second 34b variable space, wherein the first space 34a comprises afluid medium 340 and the second space 34b comprises a fluid medium 345, a firstenergy transfer device 30c connected to the first cylinder 34, a second cylinder 44comprising a reciprocatable piston 45, wherein the second piston 45 sealablydivides the second cylinder 44 into a third 44a and fourth 44b variable space,wherein the third space 44a comprises a fluid medium 440 and the fourth space44b comprises a fluid medium 445, a second energy transfer device 30dconnected to the second cylinder 44, wherein the first 30a and second 30b energytransfer devices of the main piston system 1' comprises a first 30a, 30a1, 30a2and second 30b, 30b1, 30b2 fluid line respectively, whereby the second variablespace 14b of the main piston system 1' is connected to the first variable space 34aof the further piston system 2 via the first fluid line 30a, 30a1, and furtherconnected to the third variable space 44a of the further piston system 2 via a thefirst fluid line 30a, 30a2, whereby the fourth variable space 24b of the main pistonsystem 1' is connected to the first variable space 34a of the further piston system2 via the second fluid line 30b, 30b1, and further connected to the third variablespace 44a of the further piston system 2 via a second fluid line 30b, 30b2,whereby the fluid lines 30a1, 30b1, 30a2, 30b2 transfers the kinetic energy of thereciprocatable pistons 15, 25 via the further piston system 2, to the energygenerating device 30.
    [57] [0057] According to one embodiment, the second and fourth variable spaces14b, 24b of the main piston system 1', via the fluid lines 30a1, 30b1 are in fluidconnection with a first cylinder 34 of the further piston system 2 via a valve device33 comprising a respective valve 33a1, 33b1 for the respective fluid line 30a1 and30b1, and wherein the second and fourth variable spaces 14b, 24 of the mainpiston system 1', via the fluid lines 30a2, 30b2 are in fluid connection with asecond cylinder 44 of the further piston system 2 via a valve device 43 comprisinga respective valve 43a1, 43b1 for the respective fluid line 30a2, and 30b2. 13 According to one embodiment, the valve devices 33 and 43 are controlled by avalve control unit 50.
    [58] [0058] According to one embodiment, the fluid medium 340 of the first space 34a and the fluid medium 440 of the second space 44a is an incompressible liquid.
    [59] [0059] According to one embodiment, the fluid medium 345 of the second space34b and the fluid medium 445 of the fourth space 44b is an incompressible liquid.According to one embodiment, the liquid is oil. According to one embodiment, thefluid mediums 345, 445 is a gaseous medium, wherein the gaseous medium isnitrogen.
    [60] [0060] According to one embodiment, the first cylinder 34 of the further pistonsystem 2 comprises a reciprocatable piston 35, sealably dividing the cylinder 34into a first 34a and second 34b variable space, wherein the first space 34acomprises a fluid medium 340, and the second space 34b comprises a gaseousmedium 345, wherein the second cylinder 44 of the further piston system 2comprises a reciprocatable piston 45, sealably dividing the second cylinder 44 intoa third 44a and fourth 44b variable space, wherein the third space 44a comprisesa fluid medium 440, and the fourth space 44b comprises a gaseous medium 445,wherein the second space 34b is in fluid connection with the fourth space 44b,wherein the second 14b and fourth 24b variable spaces of the main piston system1', via the fluid lines 30a1, 30a2, 30b1, 30b2, are in fluid connection with the first34a and third 44a variable spaces of the further piston system 2.
    [61] [0061] According to one embodiment, the second and fourth spaces 14b, 24b ofthe main piston system 1' are in fluid connection with a plurality of further pistonssystems 2, 2', comprising at least a first and second further piston system 2, 2' in a similar arrangement as described above (not shown). 14
    [62] [0062] According to one embodiment, a movement cycle of the reciprocation ofthe pistons of the further piston system 2 is time shifted in relation to the cycle timeof at least one of the plurality of further piston systems 2'. According to oneembodiment, the time shifted movement cycle between further pistons systems 2,2' is achieved by means of controlling of the valve devices 33, 43 by the controlunit 50.
    [63] [0063] According to one embodiment, an energy generating system 1 isprovided , wherein the energy generating system 1 comprises a second mainpiston system 1" similar to the first piston system 1' as described above, whereinthe second main piston system 1” is arranged to the further piston system 2, in asimilar manner as the first main piston system 1' is arranged to the first furtherpiston system 2 as described above, whereby the first and second energy transferdevices 30a”, 30b” of the second main piston system 1” transfer the kinetic energyfrom the reciprocating movement of the reciprocatable pistons 15”, 25” to theenergy generating device 30 arranged for being in an energy-transfer connectionto the first and second reciprocatable pistons 15”, 25”.
    [64] [0064] According to one embodiment, a movement cycle of the reciprocation ofthe pistons of the second main piston system 1” is time shifted in relation to themovement cycle of the pistons of the first main piston system 1'.
    [65] [0065] Fig. 5 discloses the energy generating system 1, according to oneembodiment, wherein the energy generating system 1 comprises a second mainpiston system 1" similar to the first main piston system 1' as described above,wherein the second main piston system 1” is arranged to the second further pistonsystems 2', in a similar manner as the first main piston system 1' is arranged to thefirst further piston system 2 as described above, wherein a movement cycle of thereciprocation of the pistons of the second main piston system 1" is time shifted inrelation to the movement cycle of the pistons of the first main piston system 1'.
    [66] [0066] According to one embodiment as described in Fig. 5, the first 30a andsecond 30b energy transfer devices of the main piston system 1' further comprisesa first 30a, 30a1, 30a2, 30a3, 30a4 and second 30b, 30b1, 30b2, 30b3, 30b4 fluid line respectively, whereby the second variable space 14b of the main pistonsystem 1' is further connected to the first variable space 54a of the second furtherpiston system 2 via the first f|uid line 30a, 30a3, (not shown) and further connectedto the third variable space 64a of the second further piston system 2' via a the firstf|uid line 30a, 30a4, whereby the fourth variable space 24b of the main pistonsystem 1' is connected to the first variable space 54a of the first further pistonsystem 2 via the second f|uid line 30b, 30b3, and further connected to the thirdvariable space 64a of the second further piston system 2' via a second f|uid line30b, 30b4, whereby the f|uid lines 30a3, 30b3, 30a4, 30b4 transfers the kineticenergy of the reciprocatable pistons 15, 25 via the second further piston system 2',to the energy generating device 30. According to one embodiment, the valvedevices 33 and 43 of the second main piston system 1” comprises additionalvalves 33a2, 33b2 and 43a2, 43b2 respectively for connecting the respective f|uidlines 30a3, 30b3 and 30a4, 30b4 to the first variable space 54a and third variablespace 64a. Additionally, an analogous set up can be provided between the secondmain piston system 1” and the first further pistons system 2 as described.
    [67] [0067] Fig. 6 discloses the energy generating system 1, according to oneembodiment, wherein a preload cylinder 74, similar to the first cylinder 34 of thefurther piston system 2 as described above, is arranged in f|uid connection withthe second space 34b and the fourth variable space 44b of the first cylinder 34and second cylinder 44 of the further piston system 2 for generating a preload tothe f|uid of the second space 34b and the fourth variable space 44b. According toone embodiment, the preload cylinder 74, is arranged in f|uid connection with thesecond space 54b and the fourth variable space 64b of the first cylinder 54 andthe second cylinder 64 of the second further piston system 2' for generating apreload to the f|uid of the second space 34b and the fourth variable space 44b.According to one embodiment, a valve device (not shown) is arranged in the linesconnecting the first and second cylinder 34, 44 and first and second cylinder 54,64 respectively. According to one embodiment, the preload is a slightoverpressure compared to the pressure in the first and second variable spaces14a, 24a. According to one embodiment, the overpressure is in the range of 1-2Bar. 16
    [68] [0068]Fig. 7 discloses the energy generating system 1, according to oneembodiment of the invention. The main pistons 5, 6, 7, 8 compressing gaseousmedium causing a phase transfer of the gas by cooling or expanding gas byheating, which alternately is provided to heat exchanging systems arranged in fluidconnection with each main piston 5, 6, 7, 8. The gaseous medium is housed in thelower part of the main pistons as well as in each heat exchanging system. Coolingand heating in liquid form is provided and returned from the heat exchangingsystems via two 3-way valves arranged to each heat exchanging system. Theupper part of each main piston and the fluid lines connected to the lower parts ofthe piston pairs 1, 2, 3, 4 is filled with e.g. hydraulic oil. The main pistons work inpairs, wherein main piston 5 is heated and has a relatively higher pressure thanmain piston 7 having a low pressure, connected to fluid line 56 and 78respectively. Piston pairs 1-4 is connected in sequence via valves to fluid lines 56and 78 so that at least one piston pair drives and rotates the drive shaft, or,transfers energy to the energy generating device by any other means. ln Fig. 7, afluid line is connected to the fluid line 56 and presses one piston in the piston pairto an upper end position, while the other piston of the piston pair is pressed backto a lower end position and hydraulic oil back via fluid line 78 to main piston 7.Pressurization line connected to the upper part in the piston pairs has a slightoverpressure compared to the lowest pressure obtainable by heat exchanging bycooling in the main pistons. This overpressure allows in this case the transfer ofgas into liquid phase in the heat exchanging system and the lower part of mainpiston 7 where the pressure as a result decreases rapidly. Eventually, the mainpistons 5 and 7 have reached their end positions. At this point, the valves V56 andV78 switch over to main piston 6 and 8 and the process starts over. While mainpiston 6 and 8 work toward their end positions, main piston 5 and 7 areundergoing a heat exchange wherein the piston previously heated is now cooled(5) and the piston previously cooled is now heated (7) so that they are ready tostart when main piston 6 and 8 are ready.
    [69] [0069] A preferred embodiment of an energy generating system 1 according tothe invention has been described. However, the person skilled in the art realizes 17 that this can be varied within the scope of the appended claims without departingfrom the inventive idea.
    [70] [0070] A| the described alternative embodiments above or parts of anembodiment can be freely combined without departing from the inventive idea as long as the combination is not contradictory.
    权利要求:
    Claims (26)
    [1] 1. An energy generating system (1) comprising:a main piston system (1'), further comprising, a first cylinder (14) comprising a first reciprocatable piston (15), wherein the firstpiston (15) sealably divides the first cylinder (14) into a first (14a) and second(14b) variable space, wherein the first space (14a) comprises a first gaseousmedium (140) and the second space (14b) comprises a fluid medium (145), a first energy transfer device 30a connected to the first cylinder (14), a first heat exchanging system (11) in fluid connection with the first space (14a),wherein the first heat exchanging system (11) is adapted to alternately heat andcool the first gaseous medium (140), whereby pressure in the first space (14a) isincreased and reduced respectively, a second cylinder (24) comprising a reciprocatable piston (25), wherein the secondpiston (25) sealably divides the second cylinder (24) into a third (24a) and fourth(24b) variable space, wherein the third space (24a) comprises a second gaseousmedium (240) and the fourth space 24b comprises a fluid medium (245), a second energy transfer device 30b connected to the second cylinder (24), a second heat exchanging system (21) in fluid connection with the third space(24a), wherein the second heat exchanging system (21) is adapted to alternatelyheat and cool the second gaseous medium (240), whereby pressure in the thirdspace (24a) is increased and reduced respectively, wherein the energy generating system (1) is adapted to control heating of the firstgaseous medium (140) substantially simultaneously with cooling of the secondgaseous medium (240) and conversely cooling of the first gaseous medium (140)substantially simultaneously with heating of the second gaseous medium (240),whereby the resulting pressure increase from heating and pressure reduction fromcooling in the first space (14a) and the third space (24a) respectively, causes the 19 first piston (15) and the second piston (25) to reciprocate between an expansionmovement during heating wherein the first and third variable spaces (14a, 24a)increases, and a compression movement during cooling wherein the first and thirdvariable spaces (14a, 24a) decreases, whereby the first and second energytransfer devices (30a, 30b) transfer kinetic energy from the reciprocatingmovement of the reciprocatable pistons (15, 25) to an energy generating device(30) arranged for being in an energy-transfer connection to the first and secondreciprocatable pistons (15, 25).
    [2] 2. An energy generating system (1) according to c|aim 1, whereby the first(30a) and second (30b) energy transfer devices comprises a first (30a1, 30b1) andsecond (30a2, 30b2) f|uid line respectively, respectively connecting the secondvariable space (14b) and fourth variable space (24b) with a further piston system(2), whereby the f|uid lines (30a1, 30b1, 30a2, 30b2) transfers the kinetic energy ofthe reciprocatable pistons (15, 25) via the further piston system (2), to the energygenerating device (30).
    [3] 3. The energy generating system (1) according to c|aim 2, wherein thesecond and fourth variable spaces (14b, 24b) of the main piston system (1 '), viathe f|uid lines (30a1, 30b1) are in f|uid connection with a first cylinder (34) of thefurther piston system (2) via a valve device (33), and wherein the second andfourth variable spaces (14b, 24) of the main piston system (1'), via the f|uid lines(30a2, 30b2) are in f|uid connection with a second cylinder (44) of the further piston system (2) via a valve device (43),wherein the valve devices (33) and (43) are controlled by a valve control unit (50).
    [4] 4. The energy generating system (1) according to c|aim 3, wherein the firstcylinder (34) of the further piston system (2) comprises a reciprocatable piston(35), sealably dividing the cylinder (34) into a first (34a) and second (34b) variablespace, wherein the first space (34a) comprises a f|uid medium (340), and thesecond space (34b) comprises a f|uid medium (345), wherein the second cylinder(44) of the further piston system (2) comprises a reciprocatable piston (45),sealably dividing the second cylinder (44) into a third (44a) and fourth (44b) variable space, wherein the third space (44a) comprises a fluid medium (440), andthe fourth space (44b) comprises a fluid medium (445), wherein the second space(34b) is in fluid connection with the fourth space (44b), wherein the second (14b)and fourth (24b) variable spaces of the main piston system (1'), via the fluid lines(30a1, 30a2, 30b1, 30b2), are in fluid connection with the first (34a) and third (44a)variable spaces of the further piston system (2).
    [5] 5. The energy generating system (1) according to any of the precedingc|aims 2-4, wherein the second and fourth spaces (14b, 24b) of the main pistonsystem (1 ') are in fluid connection with a plurality of further pistons systems (2, 2'),comprising at least a first and second further piston system (2, 2'), in a similar arrangement as described in c|aims 2-4.
    [6] 6. The energy generating system (1) according to claim 5, wherein amovement cycle of the reciprocation of the pistons of the further piston system (2)is time shifted in relation to the cycle time of at least one of the plurality of furtherpiston systems (2').
    [7] 7. The energy generating system (1) according to any of the precedingc|aims, comprising a second main piston system (1") similar to the first pistonsystem (1 ') according to any of the preceding c|aims 1-14, wherein the secondmain piston system (1”) is arranged to the further piston system (2) according toc|aims 2-4 whereby the first and second energy transfer devices (30a”, 30b”) of the secondmain piston system (1”) transfer the kinetic energy from the reciprocatingmovement of the reciprocatable pistons (15”, 25") to the energy generating device(30) arranged for being in an energy-transfer connection to the first and secondreciprocatable pistons (15”, 25"), wherein a movement cycle of the reciprocation of the pistons of the second mainpiston system (1 ") is time shifted in relation to the movement cycle of the pistonsof the first main piston system (1'). 21
    [8] 8. The energy generating system (1) according to any of the precedingclaims 2-7, comprising a second main piston system (1") similar to the first mainpiston system (1 ') according to any of the preceding claims 1-7, wherein thesecond main piston system (1”) is arranged to the second further piston system (2'), according to claims 5-7, wherein a movement cycle of the reciprocation of the pistons of the second mainpiston system (1 ") is time shifted in relation to the movement cycle of the pistonsof the first main piston system (1').
    [9] 9. The energy generating system (1) according to any of the precedingclaims 1-8, a preload cylinder (74), similar to the first cylinder (34) of the furtherpiston system (2) as described in any of the preceding claims 3-8, is arranged influid connection with the second space (34b) and the fourth variable space (44b)of the first cylinder (34) of the further piston system (2) for generating a preload tothe fluid of the second space (34b) and the fourth variable space (44b).
    [10] 10. The energy generating system (1) according to claim 1, wherein the firstenergy transfer device (30a) is connected to the first reciprocatable piston (15),and the second energy transfer device (30b) is connected to the secondreciprocatable piston (25), wherein the second space (14b) is in fluid connectionwith the fourth space (24b), whereby during expansion movement of the firstpiston (15) the fluid medium is forced out of the second space (14b) into the fourthspace aiding a compression movement of the second piston (25) so that the thirdspace is decreased, and whereby during expansion movement of the secondpiston (25) the fluid medium is forced out of the fourth space (14b) into the secondspace (14b) aiding a compression movement of the first piston (25) so that the first space is decreased.
    [11] 11. The energy generating system (1) according to any of the precedingclaims 1-10, wherein the first heat exchanging system (11) comprises a first heat exchanger(11a), comprising a first valve (12) to which a line (12a) for a hot medium and a 22 line (12b) for cold medium is connected for selectively receiving a hot medium anda cold medium into the first heat exchanger (11), wherein the second heat exchanging system (21) comprises a second heatexchanger (21a) comprising a second valve (22) to which a line (22a) for a hotmedium and a line (22b) for a cold medium is connected for selectively receiving ahot medium and a cold medium into the second heat exchanger (21), wherein the first and second valves (12, 22) are controlled by a valve control unit(50).
    [12] 12. The energy generating system (1) according to any of the preceding claims 1-11, wherein the first heat exchanger (11) is in fluid connection with the cylinder (14)via a third valve (13), and the second heat exchanger (21) is in fluid connectionwith the cylinder (24) via a fourth valve (23), wherein the opening and closing of valves (13, 23) are controllable by the valve control unit (50)
    [13] 13. The energy generating system (1) according to any of the preceding claims 1-12, wherein the first heat exchanging system (11) and the second heat exchangingsystem (21) comprises two separate heat exchangers respectively, wherein a firstheat exchanger of the first system (11) is adapted to heat the first (140) gaseousmedium, and a first heat exchanger of the second system (21) is adapted to heatthe second (240) gaseous medium, and a second heat exchanger of the firstsystem (11) is adapted to cool the first medium (140), and a second heatexchanger of the second system (21) is adapted to cool the third (240) gaseous medium.
    [14] 14. The energy generating system (1) according to any of the preceding claims 1-13, wherein the first heat exchanging system (11) is arranged within thefirst variable space (14a) of the cylinder (14), and/or the second heat exchangingsystem (21) is arranged within the third variable space (24b) of the cylinder (24). 23
    [15] 15. The energy generating system (1) according to any of the precedingclaims 1-14, wherein the first heat exchanging system (11) is arranged externallyof the cylinder (14), and/or the second heat exchanging system (21) is arranged externally of the cylinder (24).
    [16] 16. The energy generating system (1) according to any of the precedingclaims 1-15, wherein the f|uid medium (145) of the second space (14b) and thef|uid medium (245) of the fourth space (24b) is an incompressible liquid.
    [17] 17. The energy generating system (1) according to any of the precedingclaims 1-16, wherein the f|uid medium (340, 540) of the first space (34a, 54a) andthe f|uid medium (440, 640) of the third space (44a, 64a) is an incompressibleliquid.
    [18] 18. The energy generating system (1) according to any of the precedingclaims 1-17, wherein the f|uid medium (345, 545) of the second space (34b, 54b)and the fluid medium (445, 645) of the fourth space (44b, 64b) is an incompressible liquid.
    [19] 19. The energy generating system (1) according to any of the precedingclaims 1-18, wherein the liquid is oil.
    [20] 20. The energy generating system (1) according to any of the precedingclaims 1-19, wherein the gaseous medium (140, 240) is propane or R410A.
    [21] 21. The energy generating system (1) according to any of the previousclaims, wherein the gaseous medium (140, 240) undergoes a phase transfer into aliquid phase during the compression movement and back into a gaseous phase during the expansion movement.
    [22] 22. The energy generating system (1) according to any of the precedingclaims 1-21, wherein the f|uid medium (345, 445) is a gaseous medium, e.g. nitrogen.
    [23] 23. The energy generating system (1) according to any of the precedingclaims 1-22, wherein the f|uid medium (145, 245) comprises a gaseous medium. 24
    [24] 24. The energy generating system (1) according to any of the precedingclaims 1-23, wherein the hot medium is hot water and the cold medium is cold water.
    [25] 25. The energy generating system (1) according to any of the precedingclaims 1-24, wherein the energy transfer devices (30a, 30b, 30c, 30d) comprisesone of a mechanical transfer device such as a crank-Iink mechanism, magnets or coils.
    [26] 26. The energy generating system (1) according to any of the precedingclaims 1-25, wherein the energy generating device (30) comprises one of a rotating shaft in a crank-Iink mechanism, magnets, coi|s, and a generator.
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    同族专利:
    公开号 | 公开日
    WO2017155452A1|2017-09-14|
    PL3426905T3|2022-01-17|
    EP3426905A1|2019-01-16|
    EP3426905A4|2019-12-25|
    SE541034C2|2019-03-12|
    EP3426905B1|2021-08-04|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1650297A|SE541034C2|2016-03-07|2016-03-07|Stirling engine type energy generating system|SE1650297A| SE541034C2|2016-03-07|2016-03-07|Stirling engine type energy generating system|
    PL17763658T| PL3426905T3|2016-03-07|2017-03-07|Stirling engine type energy generating system|
    EP17763658.6A| EP3426905B1|2016-03-07|2017-03-07|Stirling engine type energy generating system|
    PCT/SE2017/050209| WO2017155452A1|2016-03-07|2017-03-07|Stirling engine type energy generating system|
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