CN218627343U - Stirling device - Google Patents

Abstract

The utility model provides a Stirling device, which comprises a Stirling engine, stirling refrigerators and a piston assembly, wherein the number of the Stirling engines is X groups, and the number of the Stirling refrigerators is Y groups; wherein X =1 and X + Y ≧ 3, there is a phase difference between the Y Stirling cryocooler for offsetting the work imbalance between the Stirling engine and the Stirling cryocooler. In the stirling device of this embodiment, through setting up a plurality of stirling cryocoolers of powerful stirling engine drive, not only can reduce the whole quality of stirling device through the quantity that reduces the engine, also can reduce the manufacturing cost of stirling device simultaneously and improve its reliability, under the operating performance's of guaranteeing the stirling device prerequisite, make entire system's quality reduce, transportation, simple to operate, excellent in use effect.

Description

Stirling device

Technical Field

The utility model relates to a refrigerator/heat pump technical field especially relates to a stirling device.

Background

The Stirling device is based on mechanical work output by the engine and directly transmits the mechanical work to the refrigerating machine through the piston, and the Stirling device can be applied to the field of solar energy, generates high-temperature heat through the heat collector, recycles the high-temperature heat to obtain cold quantity, and has a good application prospect.

Referring to fig. 1, in the stirling device of the stirling refrigerator driven by the conventional stirling heat engine, the power between the stirling heat engine and the stirling refrigerator is generally transmitted by arranging a movable piston, and the piston usually needs to have a very large weight to meet the power balance requirement, so that the whole stirling device is very heavy in weight and very high in cost, and meanwhile, the vibration problem caused by the weight is solved, the reliability is greatly reduced, and the difficulty in transportation and installation is correspondingly increased. In addition, in the running process of the Stirling engine, the temperature of the Stirling engine is usually over 600 ℃, so that a high-temperature alloy material with higher price is needed as a hot end material, and the problem of failure caused by high-temperature creep of the high-temperature alloy material exists. Therefore, when a plurality of stirling engines are provided, the cost of the stirling device is high, and the provision of a plurality of engines also increases the likelihood of failure of the stirling device.

In addition, the working condition of the Stirling device can change at any time, so that the temperature of the hot end of the engine changes frequently, and in addition, the piston is heavy, so that the working is unstable, even the phenomena of collision between the piston and an ejector and the like occur, and the service life and the reliability of the machine are reduced. For the reasons mentioned above, stirling devices in which a stirling heat engine drives a stirling cooler have not been used on a large scale.

Therefore, there is a need for improvement in view of the above problems to change the present situation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a stirling device for piston quality is overweight among the solution traditional stirling device, thereby leads to stirling device complete machine quality heavier, the not good problem of result of use.

The utility model provides a Stirling device, including Stirling engine and Stirling refrigerator, stirling engine is used for driving the Stirling refrigerator, the Stirling device still includes piston assembly, piston assembly power respectively in the Stirling engine with the Stirling refrigerator; the number of the Stirling engines is X groups, and the number of the Stirling refrigerators is Y groups;

wherein X + Y is not less than 3, and X =1, Y is a positive integer; and Y groups of the Stirling coolers have a phase difference therebetween so as to offset the work imbalance between the Stirling engine and the Stirling coolers.

As a further alternative of the present application, the stirling device further comprises an output work adjustment device for adjusting at least one of the stirling engine, the stirling cooler, and the piston assembly.

As a further alternative of the present application, the output work adjusting device includes an electromagnetic drive assembly for driving at least one of an engine displacer of the stirling engine, a piston of the piston assembly, a cooler displacer of the stirling cooler.

As a further alternative of the present application, the electromagnetic drive assembly is a linear motor or an electromagnet.

As a further alternative of the present application, the output work adjusting apparatus further comprises a volume adjusting assembly for adjusting the volume of the stirling engine.

As a further alternative of the present application, the volume adjusting assembly includes an adjusting cylinder, an adjusting piston, and a driving member, the adjusting cylinder is communicated with the engine block of the stirling engine, and the driving member is used for driving the adjusting piston to move so as to adjust the volume in the engine block.

As a further alternative of the present application, the output work adjusting device further comprises a working medium adjusting piece, one end of the working medium adjusting piece is connected to the stirling engine, and the other end of the working medium adjusting piece is connected to the stirling refrigerator and/or the piston cylinder of the piston assembly and is used for adjusting the flow of the working medium in the stirling device.

As a further alternative of the present application, the piston assembly includes a piston connecting rod and a plurality of pistons each connected to the piston connecting rod.

As a further alternative of the present application, the stirling device includes a cryocooler connecting rod and a plurality of cryocooler ejectors of the stirling cryocooler, the plurality of cryocooler ejectors each being connected to the cryocooler connecting rod, the stirling engine including an engine ejector and an engine connecting rod, the engine connecting rod being connected to the engine ejector and the cryocooler ejector, respectively.

As a further alternative of the present application, the stirling device includes a cryocooler ejector, one for the Y group of the stirling cryocoolers.

Implement the embodiment of the utility model provides a, following beneficial effect has:

in the stirling device of this embodiment, through setting up a plurality of stirling cryocoolers of powerful stirling engine drive, compare in traditional stirling device, under the prerequisite of guaranteeing stirling engine's driving action, not only can reduce stirling device's whole quality through the quantity that reduces the engine, the manufacturing cost that also can reduce stirling device simultaneously improves its reliability, under the prerequisite of guaranteeing stirling device's operating performance, make entire system's quality reduce, the transportation, simple to operate, excellent in use effect.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Wherein:

FIG. 1 is a schematic view of the internal construction of a Stirling apparatus according to the prior art;

fig. 2 is a schematic structural view of a stirling device according to a first embodiment of the present invention;

fig. 3 is a schematic view of a partial structural group of a stirling device according to a first embodiment of the present invention;

fig. 4 is a schematic structural view of a stirling device according to a second embodiment of the present invention;

fig. 5 is a schematic structural view of a stirling device according to a third embodiment of the present invention;

fig. 6 is a schematic structural view of a stirling device according to a fourth embodiment of the present invention;

fig. 7 is a schematic structural view of a stirling device according to a fifth embodiment of the present invention;

fig. 8 is a schematic structural view of a stirling device according to a sixth embodiment of the present invention;

fig. 9 is a schematic structural view of a stirling device according to an embodiment seven of the present invention;

fig. 10 is a schematic view of a stirling device according to an eighth embodiment of the present invention;

fig. 11 is a schematic view of a stirling device according to a ninth embodiment of the present invention;

fig. 12 is a schematic structural view of a stirling device according to an embodiment ten of the present invention;

fig. 13 is a schematic view of a stirling device according to an eleventh embodiment of the present invention;

fig. 14 is a schematic view of a stirling device according to a twelfth embodiment of the present invention;

fig. 15 is a schematic structural view of a stirling device according to a thirteenth embodiment of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings in the present invention will be combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Referring to fig. 2, the embodiment of the present invention provides a stirling device 10, including stirling engine 100, stirling cooler 200 and piston assembly 300, stirling engine 100 is the power source of stirling device 10 in this embodiment, and is used for driving stirling cooler 200, thereby realizing the refrigeration function of stirling cooler 200, and piston assembly 300 is connected to stirling engine 100 and stirling cooler 200 respectively, and is used for adjusting the energy transmission between stirling engine 100 and stirling cooler 200, and is used for realizing the work balance state of stirling device 10.

Specifically, the piston assembly 300 is connected to the stirling engine 100 and the stirling cooler 200, respectively, and is used to perform phase adjustment on the stirling engine 100 and/or the stirling cooler 200; piston assembly 300 has an engine port and a chiller port; the number of the Stirling engines 100 is X groups, the number of the Stirling refrigerators 200 is Y groups, the X groups of Stirling engines 100 are all connected to an engine port, and the Y groups of Stirling refrigerators 200 are all connected to a refrigerator port; wherein X + Y is more than or equal to 3, and X and Y are positive integers; when Y is greater than 1, there is a phase difference between the Y-group stirling coolers 200 for offsetting the inertia of the piston assembly 300. In particular, X may be equal to 1, 2 or more, and Y may be equal to 1, 2 or more.

In the stirling device 10 of this embodiment, drive a plurality of stirling cryocoolers 200 through setting up a powerful stirling engine 100, compare in traditional stirling device 10, under the prerequisite of guaranteeing stirling engine 100's drive effect, not only can reduce stirling device 10's whole quality through the quantity that reduces the engine, also can reduce stirling device 10's manufacturing cost simultaneously and improve its reliability, under the operating performance's of guaranteeing stirling device 10 prerequisite, make entire system's quality reduce, the transportation, simple to operate, excellent in use effect.

Further, referring to fig. 2 and 3, the stirling device 10 further includes a refrigerator cylinder 400, an engine cylinder 500, and a piston cylinder 600; the stirling cryocooler 200 comprises a cryocooler heat exchange assembly 210 and a cryocooler discharge assembly 220, the cryocooler discharge assembly 220 is movably accommodated in the cryocooler cylinder 400 and divides the inner space of the cryocooler cylinder 400 into a cryocooler front cavity and a cryocooler rear cavity, and the cryocooler heat exchange assembly 210 is respectively communicated with the cryocooler front cavity and the cryocooler rear cavity; the stirling engine 100 comprises an engine heat exchange assembly 110 and an engine exhaust assembly 120, the engine exhaust assembly 120 is movably accommodated in the engine block 500 and divides the internal space of the engine block 500 into an engine front cavity and an engine rear cavity, and the engine exhaust assembly 120 is used for driving the refrigerator exhaust assembly 220; the engine heat exchange assembly 110 is respectively communicated with the front cavity and the rear cavity of the engine; the piston assembly 300 is movably received in the piston cylinder 600, and the piston cylinder 600 is respectively communicated with the refrigerator cylinder 400 and the engine cylinder 500.

In the stirling device 10 of the present embodiment, the stirling engine 100, the stirling cooler 200 and the piston assembly 300 are movably accommodated in the corresponding cylinders; in an embodiment, the engine block 500 may interface with the refrigerator block 400 and/or the piston block 600, and may be coaxially disposed, parallel disposed, or spaced apart; when the engine cylinder 500 is connected to the refrigerator cylinder 400 and/or the piston cylinder 600, the two connected parts may be connected via the connecting pipe 800, or may be fixed by welding to satisfy the requirement of airtightness.

In the operation process, the stirling engine 100 moves and works in the engine cylinder 500, and the piston assembly 300 drives the refrigerator cylinder 400 to perform a refrigeration operation, at this time, the movement of the piston assembly 300 and the stirling engine 100 may be synchronous or asynchronous, adaptive adjustment is performed according to the actual operation requirement of the refrigerator cylinder 400, and the piston assembly 300 mainly achieves an adjustment function through the inertia of the piston assembly 300.

In some embodiments, the number of chiller cylinders 400 is at least one, and each set of chiller discharge assemblies 220 corresponds to one chiller cylinder 400; the number of the refrigerator discharging assemblies 220 is at least two, and each group of the refrigerator discharging assemblies 220 is movably accommodated in one refrigerator cylinder 400.

It can be understood that, in the present embodiment, a plurality of refrigerator discharging assemblies 220 may correspond to one refrigerator cylinder 400, or a plurality of refrigerator discharging assemblies 220 each correspond to one refrigerator cylinder 400, or refrigerator discharging assemblies 220 correspond to refrigerator cylinders 400 one to one; when the plurality of the refrigerator discharge assemblies 220 correspond to one refrigerator cylinder 400, each of the refrigerator discharge assemblies 220 divides the interior of the refrigerator cylinder 400 into a plurality of refrigerator front cavities and refrigerator rear cavities to realize a multi-stage refrigeration action under the driving action of the stirling engine 100, and can make the stirling device 10 have a more compact structure, facilitating the overall volume optimization of the stirling device 10. Specifically, the number of the refrigerator discharging assemblies 220 may be one, two, or more, and the number of the refrigerator cylinders 400 may be one, two, or more.

Further, the Stirling cryocooler 200 also includes at least one cryocooler link 230, each cryocooler link 230 being coupled to at least one cryocooler exhaust assembly 220.

According to the arrangement, the plurality of refrigerator discharging assemblies 220 can realize synchronous motion through the arranged refrigerator connecting rods 230, and different refrigerator discharging assemblies 220 can have phase differences among different Stirling refrigerators 200 through the length of the arranged refrigerator connecting rods 230 or the positions of the input/output holes of the refrigerator cylinder 400, so that the power balance state is realized; as shown in the embodiment of fig. 2, the number of the refrigerator connecting rods 230 is one, in some other embodiments, a plurality of refrigerator connecting rods 230 may be provided, and a plurality of refrigerator connecting rods 230 may be coaxially disposed, or may be uniformly disposed along the circumferential direction at the center of the refrigerator cylinder 400, and are respectively connected to at least two refrigerator discharging assemblies 220. Specifically, the number of the refrigerator links 230 may be one, two, or more.

Specifically, in one embodiment, the number of the refrigerator discharging assemblies 220 is two, and the phase difference between the two refrigerator discharging assemblies 220 is 180 °.

Referring to fig. 4, in the present embodiment, the cylinder 400 of the refrigerator is coaxially disposed with the piston cylinder 600.

With this arrangement, the refrigerator cylinder 400 and the piston cylinder 600 may be connected end to end and hermetically connected by welding, snap-fit connection, or the like to form an integral cylinder, thereby reducing the radial dimension of the stirling device 10 in the refrigerator cylinder 400, so that the stirling device 10 has a slim structure, and the stirling device 10 is more compact and convenient to mount and arrange. Referring to fig. 2, in other embodiments, the cylinder 400 and the piston assembly 300 may be spaced apart from each other, and the chambers may be communicated with each other through a connecting pipe 800.

Referring to fig. 4, in one embodiment, the piston assembly 300 is at least partially movably housed within the refrigerator cylinder 400.

It is understood that, in the present embodiment, the portion of the piston assembly 300 that is accommodated in the refrigerator cylinder 400 may serve as the refrigerator discharge assembly 220 of the stirling refrigerator 200, and under the driving action of the stirling engine 100, the piston assembly 300 and the refrigerator discharge assembly 220 cooperate to realize a multi-stage refrigeration function, so that the overall size of the stirling device 10 is further reduced.

Further, the Stirling engine 100 also includes at least one engine link 130, each engine link 130 coupled to at least one of the plurality of engine exhaust assemblies 120.

With this arrangement, when the stirling device 10 is provided with multiple engine exhaust assemblies 120, the engine connecting rods 130 can be respectively connected to the engine exhaust assemblies 120 and effect simultaneous movement of the engine exhaust assemblies 120.

Referring to fig. 2, in the present embodiment, the engine connecting rod 130 is connected to at least one refrigerator discharging assembly 220 and is used for driving the refrigerator discharging assembly 220 to move.

With this arrangement, the engine link 130 may also be connected to the cooler exhaust assembly 220 and/or the cooler link 230 to input a driving force to the stirling cooler 200, thereby driving the stirling cooler 200 to perform a cooling operation.

Specifically, the engine block 500 is spaced apart from the refrigerator block 400 and/or the piston block 600 and connected thereto by a pipe.

Referring to the embodiment shown in fig. 2 and 3, in the present embodiment, the engine block 500 and the piston block 600 are arranged at intervals and connected through a first connecting pipeline 810; referring to the embodiment shown in fig. 4, the engine block 500 and the refrigerator block 400 in this embodiment are spaced apart from each other and connected by a first connecting pipe 810, which is not limited herein.

Specifically, referring to fig. 3, the piston assembly 300 includes a piston 310 and a piston restoring member 320, the piston 310 is movably received in the piston cylinder 600, and the piston restoring member 320 is connected to the piston 310 and is used for restoring the piston 310.

With this arrangement, when the piston 310 moves towards the direction of compressing the piston resetting member 320, the piston resetting member 320 gradually compresses and stores elastic potential energy, and the cavity on the side of the piston 310 facing the piston resetting member 320 is in a contracted state; when the piston 310 works against the resistance, the piston returning member 320 releases the elastic potential energy and drives the piston 310 to move in the opposite direction under the elastic force, so as to adjust the work balance between the stirling engine 100 and the stirling cooler 200. Specifically, the piston resetting piece 320 may be an elastic component such as a spring, a spring plate, or may be integrally formed with the piston 310, and at this time, the piston 310 has an elastic deformation capability at a position of the piston resetting piece 320, so as to achieve a resetting function.

Referring to fig. 4, in an embodiment, a piston partition 640 is provided inside the piston cylinder 600 to divide an inner space of the piston cylinder 600 into a first piston chamber 610 and a second piston chamber 620; the number of the pistons 310 is at least two, and the piston assembly 300 includes a first piston 311, a second piston 312 and a piston rod 330, the first piston 311 is movably received in the first piston cavity 610, the second piston 312 is movably received in the second piston cavity 620, and the piston rod 330 is respectively connected to the first piston 311 and the second piston 312.

In the present embodiment, by disposing the two pistons 310 in the first piston chamber 610 and the second piston chamber 620 of the piston cylinder 600, respectively; the first piston cavity 610 and the second piston cavity 620 may be respectively used as the movable cavity of the piston assembly 300, or one of the first piston cavity 610 and the second piston cavity 620 is used as the cavity of the refrigerator discharge assembly 220; and are not intended to be limited solely thereto.

Further, referring to fig. 11, the number of the piston partitions 640 is two to divide the piston cylinder 600 into a first piston chamber 610, a second piston chamber 620, and a third piston chamber 630; the number of the pistons 310 is three, and the piston assembly 300 further includes a third piston 313 movably received in the third piston chamber 630, and the piston rod 330 is connected to the third piston 313. Specifically, the number of the piston partitions 640 may be one, two, or more than two, and divides the piston cylinder 600 into a plurality of piston chambers, which is not limited herein.

Referring to fig. 4, in the present embodiment, the piston cylinder 600 is spaced apart from the refrigerator cylinder 400 and/or the engine cylinder 500.

It is to be understood that when the stirling device 10 of the present embodiment is assembled in an external machine, the piston cylinder 600 may be disposed outside the refrigerator cylinder 400 and/or the engine cylinder 500 by providing the piston cylinder 600 separately from the refrigerator cylinder 400 and/or the engine cylinder 500 and connecting the piston cylinder 600 to the refrigerator cylinder 400 and/or the engine cylinder 500 through the first connection pipe 810, so as to facilitate the structural disposition of the external machine.

Further, referring to fig. 6, the stirling device 10 further includes an output work adjusting device 700, the output work adjusting device 700 being configured to drive at least one of the stirling engine 100, the stirling cooler 200, and the piston assembly 300.

In the use of the stirling device 10 of the present embodiment, the output work adjusting device 700 is provided to power at least one of the stirling engine 100, the stirling cooler 200 and the piston assembly 300 to adjust the output work of the stirling device 10.

Specifically, referring to fig. 8, 12, 14 and 15, the output work adjusting apparatus 700 includes an electromagnetic drive assembly 710, the electromagnetic drive assembly 710 being for driving at least one of the engine displacer 121 of the stirling engine 100, the piston 310 of the piston assembly 300, the cooler displacer 221 of the stirling cooler 200.

In one embodiment, the electromagnetic drive assembly 710 is a linear motor or an electromagnet.

When a linear motor is used as the electromagnetic drive assembly 710, it may adjust the stroke, frequency of the engine ejector 121, or phase between the engine ejector 121 and/or the piston 310.

Further, referring to fig. 12, the output work adjusting apparatus 700 further includes a volume adjusting assembly 720, and the volume adjusting assembly 720 is used for adjusting the volume of the stirling engine 100.

Specifically, in the present embodiment, the volume adjusting assembly 720 includes an adjusting cylinder 721, an adjusting piston 722 and a driving member 723, wherein the adjusting cylinder 721 is communicated with the engine block 500 of the stirling engine 100, and the driving member 723 is used for driving the adjusting piston 722 to move so as to adjust the volume in the engine block 500.

Further, referring to fig. 5 and 9, the output work adjusting device 700 further includes a working medium adjusting member 730, one end of the working medium adjusting member 730 is connected to the stirling engine 100, and the other end of the working medium adjusting member 730 is connected to the stirling cooler 200 and/or the piston 310 cylinder of the piston assembly 300 and is used for adjusting the flow rate of the working medium in the stirling device 10.

In one embodiment, working medium adjuster 730 is an electrically controlled valve. It can be understood that the adoption of the electric control valve for controlling the flow of the working medium in the Stirling device 10 has the advantages of high control speed, high control precision and the like. Specifically, the electrically controlled valve includes, but is not limited to, an electrically controlled valve element such as a solenoid valve, an electrically controlled valve, etc. In other embodiments, the working medium adjuster 730 may also be a manual control valve to control the flow of the working medium in the connecting line 800.

In some embodiments, the Stirling device 10 further includes a displacement sensor (not shown) for sensing an operating phase or displacement of at least one of the Stirling engine 100, the Stirling cooler 200, and the piston assembly 300.

It will be appreciated that by providing a displacement sensor within the stirling device 10, which can monitor the displacement signal of the movable components within the stirling device 10 in real time, a closed loop control of the stirling device 10 can be achieved by connection to an external controller, thereby improving the operating efficiency of the stirling device 10.

It should be noted that in the stirling device 10 of the present embodiment, at least one of the engine exhaust assembly 120, the cooler exhaust assembly 220 and the piston 310 is in continuous motion to achieve the cyclic operation of the stirling device 10.

Example one

Referring to fig. 2 and 3, in the present embodiment:

the stirling engine 100 includes an engine heat exchanging assembly 110, an engine exhaust 121, an engine resetting member 122 and an engine connecting rod 130, the engine exhaust 121 is movably accommodated in the engine block 500 and divides the internal space of the engine block 500 into a first engine front cavity 511 and a first engine rear cavity 512, and the engine resetting member 122 is respectively connected to the engine exhaust 121 and the engine block 500;

the stirling cooler 200 comprises two sets of cooler heat exchange assemblies 210, two sets of cooler ejectors 221, a cooler reset 222, and a cooler link 230; the two refrigerator ejectors 221 are a first refrigerator ejector 2211 and a second refrigerator ejector 2212, respectively, the refrigerator connecting rod 230 is connected to the first refrigerator ejector 2211 and the second refrigerator ejector 2212, respectively, and both ends of the engine connecting rod 130 are connected to the engine ejector 121 and the first refrigerator ejector 2211, respectively; the refrigerator resetting piece 222 is arranged at one end of the first refrigerator discharger 2211 far away from the second refrigerator discharger 2212, and the refrigerator resetting piece 222 is respectively connected to the first refrigerator discharger 2211 and the refrigerator cylinder 400;

the piston assembly 300 includes two pistons 310, a piston returning member 320 and a piston connecting rod 330, the two pistons 310 are respectively a first piston 311 and a second piston 312, the piston connecting rod 330 is respectively connected to the first piston 311 and the second piston 312, the piston returning member 320 is respectively connected to the first piston 311 and the piston cylinder 600;

the interior of the refrigerator cylinder 400 is divided into a first refrigerator cavity 410 and a second refrigerator cavity 420 by a refrigerator partition 430, and a first refrigerator discharger 2211 and a second refrigerator discharger 2212 are respectively and movably accommodated in the first refrigerator cavity 410 and the second refrigerator cavity 420; the first refrigerator discharger 2211 divides the first refrigerator cavity 410 into a first refrigerator front cavity 411 and a first refrigerator rear cavity 412, the second refrigerator discharger 2212 divides the second refrigerator cavity 420 into a second refrigerator front cavity 421 and a second refrigerator rear cavity 422, and the refrigerator cylinder 400 and the engine cylinder 500 are coaxially arranged and communicated to form a combined cylinder; the piston cylinder 600 and the combined cylinder are arranged at an interval and connected with each other through a connecting pipeline 800.

Specifically, the interior of the piston cylinder 600 is divided into a first piston cavity 610 and a second piston cavity 620 by a piston partition 640, and the first piston 311 is movably accommodated in the first piston cavity 610 and divides the first piston cavity 610 into a first piston front cavity 611 and a first piston rear cavity 612; the second piston 312 is movably accommodated in the second piston cavity 620, and divides the second piston cavity 620 into a second piston front cavity 621 and a second piston rear cavity 622; the connecting pipeline 800 includes a first connecting pipeline 810, a second connecting pipeline 820 and a third connecting pipeline 830, the first connecting pipeline 810 is respectively communicated with the first engine front cavity 511 and the first piston rear cavity 612, the second connecting pipeline 820 is respectively communicated with the first refrigerator rear cavity 412 and the second piston rear cavity 622, and the third connecting pipeline 830 is respectively communicated with the second refrigerator front cavity 421 and the second piston front cavity 621.

Further, the engine heat exchange assembly 110 includes an engine high-temperature heat exchanger 111, an engine heat regenerator 112 and an engine temperature end heat exchanger 113, wherein the engine high-temperature heat exchanger 111 and the engine temperature end heat exchanger 113 are respectively connected to two opposite ends of the engine heat regenerator 112 and are respectively communicated with the first engine front cavity 511 and the first engine rear cavity 512; the refrigerator heat exchange assembly 210 comprises a refrigerator warm end heat exchanger 211, a refrigerator heat regenerator 212 and a refrigerator low temperature heat exchanger 213, the refrigerator warm end heat exchanger 211 and the refrigerator low temperature heat exchanger 213 are respectively connected to two opposite ends of the refrigerator heat regenerator 212, one group of the refrigerator heat exchange assemblies 210 is respectively communicated with a first refrigerator front cavity 411 and a first refrigerator rear cavity 412, and the other group of the refrigerator heat exchange assemblies 210 is respectively communicated with a second refrigerator front cavity 421 and a second refrigerator rear cavity 422.

Example two

Referring to fig. 4, the difference between the present embodiment and the first embodiment is that:

the stirling cooler 200 is provided with only one cooler ejector 221, and the second piston 312 corresponds to the second cooler ejector 221; the refrigerator cylinder 400 and the piston cylinder 600 are coaxially disposed and communicated to form a combined cylinder, and the engine cylinder 500 and the combined cylinder are disposed at an interval and communicated through a first connection pipe 810; the engine block 500 is divided into a first engine cavity 510 and an engine middle cavity 530 by an engine clapboard 540, the engine resetting piece 122 is accommodated in the engine middle cavity 530, and the engine connecting rod 130 is in sliding fit with the engine clapboard 540; the stirling cryocooler 200 is provided with only one cryocooler ejector 221, and one end of the cryocooler connecting rod 230 is connected to the cryocooler ejector 221, and the other end is connected to the cryocooler resetting piece 222, and one end of the cryocooler resetting piece 222, which is far away from the cryocooler connecting rod 230, is connected to the piston cylinder 600; the second piston 312 divides the first refrigerator cavity 410 into a first refrigerator front cavity 411 and a first refrigerator rear cavity 412, and the refrigerator discharger 221 is movably accommodated in the second refrigerator cavity 420;

two ends of the first connecting pipeline 810 are respectively communicated with the first engine front cavity 511 and the first piston front cavity 611; one group of refrigerator heat exchange assemblies 210 are respectively communicated with the first refrigerator front cavity 411 and the second refrigerator rear cavity 422, and the other group of refrigerator heat exchange assemblies 210 are respectively communicated with the first refrigerator rear cavity 412 and the second refrigerator front cavity 421; piston return members 320 are provided in two, one of piston return members 320 being coupled to piston partition 640 and second piston 312, respectively, and the other piston return member 320 being coupled to first piston 311 and piston cylinder 600, respectively.

EXAMPLE III

Referring to fig. 5, the difference between the present embodiment and the second embodiment is that, in the present embodiment:

the first piston 311 and the second piston 312 are connected through at least two piston connecting rods 330; one group of refrigerator heat exchange assemblies 210 are respectively communicated with the first refrigerator rear cavity 412 and the second refrigerator rear cavity 422, and the other group of refrigerator heat exchange assemblies 210 are respectively communicated with the first refrigerator front cavity 411 and the second refrigerator front cavity 421; the number of the piston returning members 320 is one, and the piston returning members are respectively connected to the second piston 312 and the refrigerator partition 430 of the refrigerator cylinder 400;

a working medium adjusting part 730 is connected between the first refrigerator front cavity 411 and the first piston front cavity 611, so as to adjust the flow of the working medium.

Example four

Referring to fig. 6, the difference between the present embodiment and the first embodiment is that:

the number of the refrigerator cylinders 400 is two, and the two refrigerator cylinders 400 and the piston cylinder 600 are coaxially arranged and are arranged at two opposite ends connected to the piston cylinder 600 to form a combined cylinder, the refrigerator discharger assemblies 220 are symmetrically arranged from the piston assembly 300, and the first refrigerator discharger 2211 and the second refrigerator discharger 2212 are connected through the refrigerator connecting rod 230; the first piston 311 divides the combined cylinder into a first piston front cavity 611 and a first refrigerator front cavity 411, the first refrigerator front cavity 411 is communicated with the first piston rear cavity 612, the second piston 312 divides the combined cylinder into a second refrigerator rear cavity 422 and a second piston rear cavity 622, and the second refrigerator rear cavity 422 is communicated with the second piston front cavity 621; refrigerator resetting member 222 is connected to piston partition 640 and refrigerator link 230, respectively, piston resetting member 320 is connected to second piston 312 and piston partition 640, respectively, and refrigerator resetting member 222 and piston resetting member 320 are located on two opposite sides of piston partition 640, respectively; the first engine front cavity 511 is communicated with the second piston rear cavity 622 through a connecting pipeline 800; wherein the stirling device 10 is further provided with an output work adjusting device 700, and the output work adjusting device 700 is used to drive the piston rod 330 to move in the axial direction of the piston cylinder 600.

EXAMPLE five

Referring to fig. 7, the difference between the present embodiment and the fourth embodiment is that:

the number of the refrigerator connecting rods 230 is two, and the two connecting rods are respectively a first refrigerator discharger connecting rod 231 and a second refrigerator discharger connecting rod 232, the first refrigerator discharger connecting rod 231 and the second refrigerator discharger connecting rod 232 are arranged at intervals and are positioned between a first refrigerator discharger 2211 and a second refrigerator discharger 2212, the first refrigerator discharger connecting rod 231 is connected to the first refrigerator discharger 2211, and the second refrigerator discharger connecting rod 232 is connected to the second refrigerator discharger 2212; the number of the refrigerator resetting pieces 222 is also two, and the first refrigerator resetting piece 2221 and the second refrigerator resetting piece 2222 are respectively provided, the first refrigerator resetting piece 2221 is respectively connected to one of the refrigerator cylinder 400 and the first refrigerator discharger 2211, and the second refrigerator resetting piece 2222 is respectively connected to the other of the piston cylinder 600 and the second refrigerator discharger 2212; the stirling device 10 of the present embodiment further eliminates the output work adjusting device 700 provided in the fourth embodiment.

EXAMPLE six

Referring to fig. 8, the difference between the present embodiment and the fifth embodiment is that:

the stirling device 10 is also provided with an output work adjustment device 700, and the output work adjustment device 700 is housed within the engine intermediate cavity 530 and is used to drive the engine exhaust 121 in axial movement along the engine block 500.

EXAMPLE seven

Referring to fig. 9, the difference between the present embodiment and the fifth embodiment is that:

the stirling device 10 is provided with two working medium adjusting parts 730, wherein one working medium adjusting part 730 is respectively communicated with the first refrigerator front cavity 411 and the second piston rear cavity 622, and the other working medium adjusting part 730 is respectively communicated with the second piston rear cavity 622 and the second refrigerator rear cavity 422.

Example eight

Referring to fig. 10, the difference between the present embodiment and the fifth embodiment is that:

the number of the pistons 310 is one, and the pistons are movably accommodated in the second refrigerator rear cavity 422 to be divided into a first piston front cavity 611 and a first piston rear cavity 612; a piston partition 640 is disposed inside the piston cylinder 600 to partition the two refrigerator cylinders 400 into a spring cavity 650, the spring cavity 650 is located between the first refrigerator front cavity 411 and the first piston rear cavity 612, and the first refrigerator ejector connecting rod 231 and the second refrigerator ejector connecting rod 232 are at least partially movably received in the spring cavity 650 to expand or compress the spring cavity 650; the number of the connecting pipelines 800 is two, and the connecting pipelines are respectively a first connecting pipeline 810 and a second connecting pipeline 820, the first connecting pipeline 810 is respectively communicated with the engine cylinder 500 and the second refrigerator rear cavity 422, and the second connecting pipeline 820 is respectively communicated with the first refrigerator front cavity 411 and the first piston rear cavity 612.

Example nine

Referring to fig. 11, the difference between the present embodiment and the fifth embodiment is that:

the piston assembly 300 further includes a third piston 313, the piston cylinder 600 is partitioned by a piston partition 640 to form a third piston cavity 630, the third piston 313 is movably received in the third piston cavity 630, and partitions the third piston cavity 630 into a third piston front cavity 631 and a third piston rear cavity 632, the third piston front cavity 631 is communicated with the second refrigerator rear cavity 422, and the third piston 313 is connected to a side of the second piston 312 away from the first piston 311 through a piston connecting rod 330.

Example ten

Referring to fig. 12, the difference between the present embodiment and the fifth embodiment is that:

the stirling device 10 is further provided with a volume adjusting assembly 720, an adjusting cylinder 721 of the volume adjusting assembly 720 is communicated with the first engine front cavity 511, and a driving member 723 is used for driving an adjusting piston 722 to move in the adjusting cylinder 721 so as to adjust the volume of the first engine front cavity 511; specifically, the driving member 723 may adopt a driving element such as a driving motor, a linear driving member, etc., and is not limited thereto.

In the present embodiment, the number of the electromagnetic driving assemblies 710 is two, and the first regulator 711 and the second regulator 712 are respectively provided, and the first regulator 711 is provided in the engine block 500 and is used for driving the stirling engine 100; the number of the second regulators 712 is two, and the two second regulators 712 are used to drive the first refrigerator ejector link 231 and the second refrigerator ejector link 232, respectively.

EXAMPLE eleven

Referring to fig. 13, the difference between the present embodiment and the first embodiment is that:

the piston cylinder 600 is connected between the engine cylinder 500 and the refrigerator cylinder 400 to form a combined cylinder, one end of the piston assembly 300 divides the combined cylinder into a first piston front cavity 611 and a first piston rear cavity 612, the first piston rear cavity 612 is communicated with the first engine front cavity 511, the other end of the piston assembly 300 divides the combined cylinder into a second piston front cavity 621 and a second piston rear cavity 622, and the second piston front cavity 621 is communicated with the first refrigerator rear cavity 412; the connecting pipeline 800 is respectively communicated with the second refrigerator rear cavity 422 and the second piston rear cavity 622.

Example twelve

Referring to fig. 14, the difference between the present embodiment and the fourteenth embodiment is that, in the present embodiment:

the stirling device 10 is further provided with a first regulator 711 for driving the engine connecting rod 130 to drive the engine exhaust 121 and a second regulator 712 for driving the piston connecting rod 330 to drive the piston 310.

EXAMPLE thirteen

Referring to fig. 15, the difference between the present embodiment and the fifteenth embodiment is that, in the present embodiment:

the piston assembly 300 is provided with a piston 310, the piston 310 is provided on a side of the piston partition 640 facing the stirling engine 100, a second regulator 712 is provided on a side of the piston partition 640 facing away from the piston 310, and the second regulator 712 is used for driving the piston rod 330 to drive the piston 310; the first adjuster 711 is arranged on one side of the piston partition 640 far away from the engine ejector 121, and the first adjuster 711 is used for driving the engine connecting rod 130 to drive the engine ejector 121; the number of the connecting pipelines 800 is two, and the connecting pipelines are a first connecting pipeline 810 and a second connecting pipeline 820 respectively, the first connecting pipeline 810 is communicated with the engine heat exchange assembly 110 and the refrigerator heat exchange assembly 210 close to one side of the stirling engine 100 respectively, and the second connecting pipeline 820 is communicated with the refrigerator rear cavity of the other refrigerator discharging assembly 220 and the piston front cavity of the piston 310.

It should be noted that, in the above embodiments, the stirling device 10 is mostly arranged in a straight line, that is, the cylinders are arranged coaxially, but in some other embodiments, the combined cylinder formed by connecting the refrigerator cylinder 400 and the engine cylinder 500 may also be a V-shaped structure, an H-shaped structure, or other connecting structures, so as to realize the cycle operation of the stirling device 10.

In some other embodiments, the stirling cooler 200 may be one-stage or multi-stage, and is not limited herein to being able to meet the actual operating requirements of the stirling device 10. Specifically, in the stirling device 10 of the present embodiment, the operating medium in the stirling engine 100, the stirling cooler 200 and the piston assembly 300 may be selected from gases such as helium, hydrogen, nitrogen and the like, which is not limited herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A stirling device comprising a stirling engine and a stirling cooler, said stirling engine driving said stirling cooler, wherein said stirling device further comprises a piston assembly, said piston assembly being in power connection with said stirling engine and said stirling cooler, respectively; the number of the Stirling engines is X groups, and the number of the Stirling refrigerators is Y groups;

wherein X + Y is not less than 3, and X =1, Y is a positive integer; and Y groups of the Stirling coolers have a phase difference therebetween so as to offset the work imbalance between the Stirling engine and the Stirling coolers.

2. A stirling device in accordance with claim 1, further comprising an output work adjustment device for adjusting at least one of the stirling engine, the stirling cooler and the piston assembly.

3. A stirling device in accordance with claim 2, wherein the output work adjustment device comprises an electromagnetic drive assembly for driving at least one of an engine exhaust of the stirling engine, a piston of the piston assembly, a cooler exhaust of the stirling cooler.

4. A stirling device in accordance with claim 3, wherein the electromagnetic drive assembly is a linear motor or an electromagnet.

5. A stirling device in accordance with claim 2, wherein the output work adjustment device further comprises a volume adjustment assembly for adjusting the volume of the stirling engine.

6. A Stirling device according to claim 5, wherein the volume adjustment assembly comprises an adjustment cylinder in communication with the engine block of the Stirling engine, an adjustment piston and a drive member for driving the adjustment piston to move to adjust the volume within the engine block.

7. A stirling device in accordance with claim 2, wherein the output work adjusting device further comprises a working fluid adjusting member, one end of the working fluid adjusting member being connected to the stirling engine and the other end of the working fluid adjusting member being connected to the stirling cooler and/or the piston cylinder of the piston assembly and being adapted to adjust the flow of working fluid in the stirling device.

8. A stirling device in accordance with claim 1, wherein the piston assembly comprises a piston rod and a plurality of pistons each connected to the piston rod.

9. A stirling device according to claim 1, wherein the stirling device includes a cryocooler connecting rod and a plurality of cryocooler ejectors of the stirling cryocooler, the plurality of cryocooler ejectors each being connected to the cryocooler connecting rod, the stirling engine including an engine ejector and an engine connecting rod, the engine connecting rod being connected to the engine ejector and the cryocooler ejector respectively.

10. A stirling device in accordance with claim 1, wherein the stirling device includes a cooler displacer, one of the cooler displacers being common to the Y groups of stirling coolers.

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