CN110206657B - A thermal hysteresis free-piston Stirling generator - Google Patents
A thermal hysteresis free-piston Stirling generator Download PDFInfo
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- CN110206657B CN110206657B CN201910595287.XA CN201910595287A CN110206657B CN 110206657 B CN110206657 B CN 110206657B CN 201910595287 A CN201910595287 A CN 201910595287A CN 110206657 B CN110206657 B CN 110206657B
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- 108010053481 Antifreeze Proteins Proteins 0.000 title claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- 239000001307 helium Substances 0.000 claims abstract description 7
- 229910052734 helium Inorganic materials 0.000 claims abstract description 7
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 abstract description 16
- 238000006073 displacement reaction Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000282412 Homo Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/0435—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines the engine being of the free piston type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/053—Component parts or details
- F02G1/055—Heaters or coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/053—Component parts or details
- F02G1/057—Regenerators
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
本发明提供的热滞后型自由活塞斯特林发电机，包括：壳体、及设置于所述壳体内且沿所述壳体的横轴对称设置的弹性件、线圈支架、回铁、永磁铁、线圈、动力活塞、压缩腔、冷却器、调相小孔、空容积、回热器及加热器，所述冷却器包括外部环形冷却器和内部环形冷却器，所述壳体内部充满高压氦气，由于本发明提供的热滞后型自由活塞斯特林发电机内空容积和回热器采用同轴布置，发电机共用一个冷却器使得发电机结构更加紧凑；且通过调相小孔使回热器与压缩腔直接相连，可以有效的调节其动力活塞位移与压力波的相位，从而提高该类发电机的效率。
The thermal lag free-piston Stirling generator provided by the invention includes: a casing, an elastic member, a coil bracket, a return iron, and a permanent magnet that are arranged in the casing and symmetrically arranged along the transverse axis of the casing. , coil, power piston, compression chamber, cooler, phase modulation orifice, empty volume, regenerator and heater. The cooler includes an external annular cooler and an internal annular cooler. The inside of the shell is filled with high-pressure helium. gas. Since the internal air volume and the regenerator of the thermal lag free-piston Stirling generator provided by the present invention are coaxially arranged, the generator shares a cooler, making the generator structure more compact; and the regenerator is made more compact through the phase modulation holes. The heater is directly connected to the compression chamber, which can effectively adjust the displacement of its power piston and the phase of the pressure wave, thereby improving the efficiency of this type of generator.
Description
技术领域Technical field
本发明涉及斯特林发电机装置领域，特别涉及一种热滞后型自由活塞斯特林发电机。The invention relates to the field of Stirling generator devices, and in particular to a thermal lag free piston Stirling generator.
背景技术Background technique
能源环境问题已经成为制约当今世界各国发展的主要问题。随着社会的不断发展，传统的高品位化石燃料不仅在量上不能满足人类的需求，而且其造成的环境污染问题也不符合人类新的发展理念。目前世界各国一方面在积极探索新的替代能源，如太阳能和核能；另一方面也在研究怎么样利用现有的低品位能源，如余热和普通燃料。然而需要把各种能源转化成功或者电的形式，人类才能更方便有效的利用。因此积极解决以上问题的有效途径之一就是开发一种可以把各种新的替代能源和低品位能源高效的转化成功或者电的动力机械装置。Energy and environmental issues have become the main issues restricting the development of countries around the world today. With the continuous development of society, traditional high-grade fossil fuels are not only unable to meet human needs in quantity, but the environmental pollution problems they cause are also incompatible with new human development concepts. At present, countries around the world are actively exploring new alternative energy sources, such as solar energy and nuclear energy; on the other hand, they are also studying how to utilize existing low-grade energy sources, such as waste heat and ordinary fuels. However, it is necessary to successfully convert various energy sources into electrical forms so that humans can use them more conveniently and effectively. Therefore, one of the effective ways to actively solve the above problems is to develop a power mechanical device that can efficiently convert various new alternative energy sources and low-grade energy into electricity.
热滞后型自由活塞斯特林发电机是一种高效的外燃式热电转换机械，几乎可以利用现有的所有热源种类。区别于其它类型的自由活塞斯特林发电机，热滞后型自由活塞斯特林发电机仅有处于室温环境下往复运动的动力活塞，减少了处于高温环境下往复运动的运动部件，同时其活塞采用板簧支撑，活塞与气缸之间采用动密封技术，其结构更加简单，寿命更长，可靠性更高。热滞后自由活塞斯特林发动机有着十分广泛应用前景，主要包括空间深空探测器同位素电源、空间大型核电站、地面太阳能发电站、家用热电联产和国防应用等。The thermal lag free-piston Stirling generator is a highly efficient external combustion thermoelectric conversion machine that can utilize almost all existing heat source types. Different from other types of free-piston Stirling generators, the thermal-lag free-piston Stirling generator only has a power piston that reciprocates at room temperature, reducing the number of moving parts that reciprocate in a high-temperature environment. At the same time, its piston It adopts leaf spring support and adopts dynamic sealing technology between the piston and the cylinder. Its structure is simpler, its life is longer and its reliability is higher. The thermal lag free-piston Stirling engine has a wide range of application prospects, including isotope power supplies for deep space detectors, large-scale space nuclear power plants, ground solar power stations, household combined heat and power, and national defense applications.
现有的热滞后型自由活塞斯特林发电机其压缩腔与冷却器通常是通过一个连管相连，并且热腔、冷腔与回热器采用直线布置，使得其体积比较大。虽然去掉了一个配气活塞减少了运动部件，但是失去了配气活塞的调相作用使得该类发电机的效率往往低于拥有两个活塞的自由活塞斯特林发电机。The compression chamber and the cooler of the existing thermal lag free-piston Stirling generator are usually connected through a connecting pipe, and the hot chamber, cold chamber and regenerator are arranged in a straight line, making the volume relatively large. Although removing a valve piston reduces moving parts, the loss of the phasing effect of the valve piston makes this type of generator often less efficient than a free-piston Stirling generator with two pistons.
发明内容Contents of the invention
有鉴如此，有必要针对现有技术存在的缺陷，提供一种结构紧凑且发电机效率高的热滞后型自由活塞斯特林发电机。In view of this, it is necessary to provide a thermal lag free-piston Stirling generator with compact structure and high generator efficiency to address the shortcomings of the existing technology.
为实现上述目的，本发明采用下述技术方案：In order to achieve the above objects, the present invention adopts the following technical solutions:
一种热滞后型自由活塞斯特林发电机，包括：壳体、设置于所述壳体内的弹性件、线圈支架、回铁、永磁铁、线圈、动力活塞、压缩腔、冷却器、调相小孔、空容积、回热器及加热器，所述冷却器包括外部环形冷却器和内部环形冷却器，所述壳体内部充满高压氦气，所述弹性件、线圈支架、回铁、永磁铁、线圈、动力活塞、压缩腔、冷却器、调相小孔、空容积、回热器及加热器沿所述壳体的横轴对称设置，其中：A thermal lag free piston Stirling generator, including: a casing, an elastic member arranged in the casing, a coil support, a return iron, a permanent magnet, a coil, a power piston, a compression chamber, a cooler, and a phase modulator. Small holes, empty volumes, regenerators and heaters. The cooler includes an external annular cooler and an internal annular cooler. The inside of the shell is filled with high-pressure helium. The elastic member, coil bracket, return iron, and permanent Magnets, coils, power pistons, compression chambers, coolers, phase modulation holes, empty volumes, regenerators and heaters are arranged symmetrically along the transverse axis of the housing, where:
所述弹性件的两端部分别与所述回铁固定，所述动力活塞的端部一侧与所述弹性件的中间位置连接，所述线圈支架的两侧边相对位置上缠绕有所述线圈，在所述回铁与所述线圈之间设置有所述永磁铁，所述动力活塞与所述线圈支架的端部另一侧连接，所述动力活塞可在与所述外壳形成的压缩腔内沿所述横轴移动，所述调相小孔沿所述横轴所在的方向设置，所述调相小孔上方设置有所述冷却器，所述调相小孔两侧分别连接所述压缩腔及所述换热器，所述换热器上方的一侧设置有所述加热器，且所述加热器与所述冷却器之间的空间形成所述空容积，且所述换热器、所述空容积和所述回热器同轴布置形式设置。The two ends of the elastic member are respectively fixed to the return iron, one end of the power piston is connected to the middle position of the elastic member, and the two sides of the coil bracket are wound around the opposite positions. The coil is provided with the permanent magnet between the return iron and the coil. The power piston is connected to the other side of the end of the coil bracket. The power piston can be compressed in the compression zone formed with the shell. The cavity moves along the horizontal axis, the phase modulation holes are arranged along the direction of the transverse axis, the cooler is arranged above the phase modulation holes, and the two sides of the phase modulation holes are respectively connected to the The compression chamber and the heat exchanger, the heater is provided on one side above the heat exchanger, and the space between the heater and the cooler forms the empty volume, and the exchanger The heater, the void volume and the regenerator are arranged in a coaxial arrangement.
在一些较佳的实施例中，所述弹性件为板弹簧。In some preferred embodiments, the elastic member is a leaf spring.
在一些较佳的实施例中，所述冷却器包括内部环形冷却器和设置于所述内部环形冷却器的外部环形冷却器，所述内部环形冷却器和外部环形冷却器同轴布置。In some preferred embodiments, the cooler includes an inner annular cooler and an outer annular cooler disposed on the inner annular cooler, and the inner annular cooler and the outer annular cooler are coaxially arranged.
本发明采用上述技术方案的优点是：The advantages of the present invention adopting the above technical solution are:
本发明提供的热滞后型自由活塞斯特林发电机，包括：壳体、及设置于所述壳体内且沿所述壳体的横轴对称设置的弹性件、线圈支架、回铁、永磁铁、线圈、动力活塞、压缩腔、冷却器、调相小孔、空容积、回热器及加热器，所述冷却器包括外部环形冷却器和内部环形冷却器，所述壳体内部充满高压氦气，由于本发明提供的热滞后型自由活塞斯特林发电机内空容积和回热器采用同轴布置，发电机共用一个冷却器使得发电机结构更加紧凑；且通过调相小孔使回热器与压缩腔直接相连，可以有效的调节其动力活塞位移与压力波的相位，从而提高该类发电机的效率。The thermal lag free-piston Stirling generator provided by the invention includes: a casing, an elastic member, a coil bracket, a return iron, and a permanent magnet that are arranged in the casing and symmetrically arranged along the transverse axis of the casing. , coil, power piston, compression chamber, cooler, phase modulation orifice, empty volume, regenerator and heater. The cooler includes an external annular cooler and an internal annular cooler. The inside of the shell is filled with high-pressure helium. gas. Since the internal air volume and the regenerator of the thermal lag free-piston Stirling generator provided by the present invention are coaxially arranged, the generator shares a cooler, making the generator structure more compact; and the regenerator is made more compact through the phase modulation holes. The heater is directly connected to the compression chamber, which can effectively adjust the displacement of its power piston and the phase of the pressure wave, thereby improving the efficiency of this type of generator.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.
图1为本发明实施例提供的热滞后型自由活塞斯特林发电机的结构示意图。Figure 1 is a schematic structural diagram of a thermal hysteresis free piston Stirling generator provided by an embodiment of the present invention.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
请参阅图1，为本发明实施例提供的一种热滞后型自由活塞斯特林发电机的结构示意图，为了便于说明，仅示出了与本发明实施例相关的部分，详述如下。Please refer to FIG. 1 , which is a schematic structural diagram of a thermal lag free-piston Stirling generator provided by an embodiment of the present invention. For convenience of explanation, only the parts related to the embodiment of the present invention are shown, which are described in detail below.
本发明提供的热滞后型自由活塞斯特林发电机，包括：壳体1、设置于所述壳体1内的弹性件2、线圈支架3、回铁4、永磁铁5、线圈6、动力活塞7、压缩腔8、冷却器9、调相小孔10、空容积11、回热器12及加热器13，所述壳体1内部充满高压氦气，所述弹性件2、线圈支架3、回铁4、永磁铁5、线圈6、动力活塞7、压缩腔8、冷却器9、调相小孔10、空容积11、回热器12及加热器13沿所述壳体1的横轴对称设置。The thermal lag free-piston Stirling generator provided by the invention includes: a casing 1, an elastic member 2 arranged in the casing 1, a coil support 3, a return iron 4, a permanent magnet 5, a coil 6, a power Piston 7, compression chamber 8, cooler 9, phase modulation orifice 10, empty volume 11, regenerator 12 and heater 13. The inside of the shell 1 is filled with high-pressure helium gas. The elastic member 2 and coil bracket 3 , return iron 4, permanent magnet 5, coil 6, power piston 7, compression chamber 8, cooler 9, phase modulation hole 10, empty volume 11, regenerator 12 and heater 13 along the transverse direction of the housing 1 Axisymmetric setup.
可以理解，由于整个发电机通过壳体1形成一个完全与外界封闭的腔体，内部充满高压的氦气，当外部对发电机的加热器13进行加热时氦气气体受热膨胀，工作腔体内部的压力升高，从而推动动力活塞7运动，由于动力活塞7运动使得工作腔体体积变大，同时气体运动到冷却器9时被冷却温度降低，工作腔体内压力降低，动力活塞7向相反的方向运动，推动气体到加热器9被加热，以此周而复始的循环进行，动力活塞7运动带动直线电机的线圈6切割磁感线从而对外输出电，从而实现该发电机源源不断的把外界热能转化成电能。It can be understood that since the entire generator forms a cavity completely closed to the outside world through the housing 1, the interior is filled with high-pressure helium gas. When the heater 13 of the generator is heated from the outside, the helium gas expands due to heat, and the inside of the working cavity The pressure increases, thereby pushing the power piston 7 to move. Due to the movement of the power piston 7, the volume of the working cavity becomes larger. At the same time, when the gas moves to the cooler 9, the cooling temperature decreases. The pressure in the working cavity decreases, and the power piston 7 moves in the opposite direction. direction movement, pushing the gas to the heater 9 to be heated, and in this cycle, the movement of the power piston 7 drives the coil 6 of the linear motor to cut the magnetic induction lines and output electricity to the outside, thereby realizing the generator to continuously convert external heat energy. into electrical energy.
在一些较佳的实施例中，所述弹性件2为板弹簧。In some preferred embodiments, the elastic member 2 is a leaf spring.
在一些较佳的实施例中，所述冷却器9包括内部环形冷却器91和设置于所述内部环形冷却器91的外部环形冷却器92，所述内部环形冷却器91和外部环形冷却器92同轴布置。In some preferred embodiments, the cooler 9 includes an inner annular cooler 91 and an outer annular cooler 92 disposed on the inner annular cooler 91 , the inner annular cooler 91 and the outer annular cooler 92 Coaxial arrangement.
可以理解，本发明提供的热滞后型自由活塞斯特林发电机，冷却器9是一个整体但是包括同轴布置的内部冷却器91和外部冷却器92两部分，相互之间气体不能流通(图1中加黑部分标注了当动力活塞7向右运动时气体的流量分配和流向)，此过程中绝大部分气体通过外部冷却器92被冷却后进入空容积11，再通过加热器13被加热后进入回热器12，很小部分气体通过调相小孔10直接进入回热器12的一端，当动力活塞7向左运动时，所有气体流向与图中相反。It can be understood that in the thermal lag free-piston Stirling generator provided by the present invention, the cooler 9 is a whole but includes an internal cooler 91 and an external cooler 92 arranged coaxially, and gas cannot flow between each other (Fig. The blackened part in 1 marks the flow distribution and flow direction of the gas when the power piston 7 moves to the right). During this process, most of the gas is cooled by the external cooler 92 and then enters the empty volume 11, and is heated by the heater 13. After entering the regenerator 12, a small part of the gas directly enters one end of the regenerator 12 through the phase modulation hole 10. When the power piston 7 moves to the left, all the gas flows in the opposite direction to that in the figure.
可以理解，如果没有调相小孔10，当动力活塞7向右运动时，气体全部通过外部冷却器92流入空容积11，再经过加热器13流入回热器12，最终在内部冷却器91被冷却，当动力活塞7向左运动时流向相反。由于气体在交变流动过程中存在各部件存在流动阻力，工作腔体的压力波与动力活塞7位移会存在一个相位差。It can be understood that if there is no phase modulation hole 10, when the power piston 7 moves to the right, all the gas will flow into the empty volume 11 through the external cooler 92, then flow into the regenerator 12 through the heater 13, and finally be exhausted in the internal cooler 91. Cooling, the flow direction is opposite when the power piston 7 moves to the left. Due to the flow resistance of various components during the alternating flow process of gas, there will be a phase difference between the pressure wave of the working chamber and the displacement of the power piston 7 .
如假设动力活塞7运动的方程是：For example, assume that the equation of motion of power piston 7 is:
x1＝X1sinωtx 1 =X 1 sinωt
其中x1表示活塞的振动位移；X1表示活塞振动的振幅；ω表示活塞振动的角频率。Where x 1 represents the vibration displacement of the piston; X 1 represents the amplitude of the piston vibration; ω represents the angular frequency of the piston vibration.
则工作腔体压力波的表达式则是：Then the expression of the working cavity pressure wave is:
P＝P0sin(ωt-θ)P＝P 0 sin(ωt-θ)
其中P表示工作腔的压力波；P0表示压力波振幅；θ表示压力波滞后活塞位移的相位角。Where P represents the pressure wave in the working chamber; P 0 represents the pressure wave amplitude; θ represents the phase angle of the pressure wave lagging the piston displacement.
其中θ为动力活塞7位移和工作腔体压力波的相位差，该相位是影响该类发电机效率的关键因素。同时该相位存在一个最优值使得发电机的效率最高。当流过调相小孔10的一部气体与迎面而来的气体在回热，12一端混合后压力波的相位就会发生变化，通过改变调相小孔10的形式就可以有效的调节相位θ到最优值，从而提高发电机的效率。Among them, θ is the phase difference between the displacement of the power piston 7 and the pressure wave of the working cavity. This phase is a key factor affecting the efficiency of this type of generator. At the same time, there is an optimal value for this phase to make the generator have the highest efficiency. When part of the gas flowing through the phase modulation orifice 10 and the oncoming gas are reheated, the phase of the pressure wave will change after mixing at one end of the phase modulation orifice 10. The phase can be effectively adjusted by changing the form of the phase modulation orifice 10. θ to the optimal value, thereby improving the efficiency of the generator.
本发明提供的热滞后型自由活塞斯特林发电机内空容积和回热器采用同轴布置，发电机共用一个冷却器使得发电机结构更加紧凑；且通过调相小孔使回热器与压缩腔直接相连，可以有效的调节其动力活塞位移与压力波的相位，从而提高该类发电机的效率。The thermal lag free-piston Stirling generator provided by the present invention adopts a coaxial arrangement for the internal air volume and the regenerator. The generator shares a cooler, making the generator structure more compact; and the regenerator and the regenerator are connected through the phase modulation holes. The compression chamber is directly connected, which can effectively adjust the displacement of its power piston and the phase of the pressure wave, thereby improving the efficiency of this type of generator.
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。The technical features of the above-described embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.
当然本发明的热滞后型自由活塞斯特林发电机还可具有多种变换及改型，并不局限于上述实施方式的具体结构。总之，本发明的保护范围应包括那些对于本领域普通技术人员来说显而易见的变换或替代以及改型。Of course, the thermal lag free-piston Stirling generator of the present invention can also have various transformations and modifications, and is not limited to the specific structure of the above embodiment. In short, the protection scope of the present invention should include those changes or substitutions and modifications that are obvious to those of ordinary skill in the art.
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| CN114790953B (en) * | 2021-01-26 | 2025-10-17 | 中国科学院理化技术研究所 | Backheating buffer tube type free piston Stirling generator |
| CN116358323A (en) * | 2023-05-06 | 2023-06-30 | 中国科学院理化技术研究所 | High pressure helium heat exchange system, heat exchange method and regenerative heat engine system |
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