CN1035788C - 多路旁通脉冲管制冷机 - Google Patents
多路旁通脉冲管制冷机 Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
- F25B9/145—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle pulse-tube cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1406—Pulse-tube cycles with pulse tube in co-axial or concentric geometrical arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1408—Pulse-tube cycles with pulse tube having U-turn or L-turn type geometrical arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1413—Pulse-tube cycles characterised by performance, geometry or theory
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1414—Pulse-tube cycles characterised by pulse tube details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1415—Pulse-tube cycles characterised by regenerator details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1424—Pulse tubes with basic schematic including an orifice and a reservoir
- F25B2309/14241—Pulse tubes with basic schematic including an orifice reservoir multiple inlet pulse tube
Abstract
一种多路旁通脉冲管制冷机,该脉冲管制冷机具有依次相通的连接的压力波发生器、蓄冷器、冷头(也就是冷端热交换器)、脉冲管、小孔节流件和气库,其特征是,所述脉冲管内适当地设置能使气体均匀、顺利通过的阻力元件,在蓄冷器和脉冲管中间部位的适当位置处,通过节流元件将蓄冷器和脉冲管二者相连通,形成至少一条旁通气流通路。这种制冷机制冷温度低、效率高、指令制冷量大。
Description
本发明涉及一种低温制冷机,特别涉及一种脉冲管制冷机,也就是指一种利用一股气体交替进、出一根两端装有导流器(即使气体层流化的元件)的簿壁圆管,即脉冲管,该管内每层气体微团不断地承受压缩和膨胀,同时有气体微团连续进、出,气体被压缩时温度升高,膨胀时温度又下降,因此沿该脉冲管轴向建立起一个可观的温度梯度,从而形成一种制冷机。本发明涉及的多路旁通脉冲管制冷机是有压力波发生器,蓄冷器,冷端热交换器(即冷头),脉冲管,节流元件和气库依次串接成,蓄冷器和脉冲管相对冷头的一端具有热端交换器,其特征是,蓄冷器和脉冲管之间有多路节流装置的旁通路,并且在脉冲管中间部节流处轴向依次装有多层平行设置的丝网。这种制冷机能获得低于室温的温度。
1963年由Gifford等首先发明基本型脉冲管制冷机(美国专利US3237421),1984年Mikulin等又发明了改进型的带有气库及气库与脉冲管之间具有小孔节流装置的脉冲管制冷机(苏联专利SU553414),如图1所示。该制冷机具有依次相接的压力波发生器1,蓄冷器2,冷端热交换器(即冷头)3,导流器4和6,脉冲管5,热端换热器7,小孔节流元件8,气库9。其特征是在脉冲管5的热端引出一股气流通过小孔节流元件8和气库9相连接。该制冷机的性能有很大提高并使脉冲管有了实用价值。
朱绍伟等人在中国专利CN8921425.2中公开了一种双向进气型的脉冲管制冷机。其特征是在压力波发生器1的出口端引出一股气流通过管子和阻尼调节件由脉冲管5的热端进入脉冲管5中。这种双向进气型脉冲管制冷机的制冷效率虽有提高,但是其最大制冷量和最最低制冷温度依然是有限的。这是由于脉冲管中存在的较长的推移气柱(可以假想为一推动的推移气柱型气体活塞)的刚度远远低于其他微型制冷机(例如Stirling制冷机)中的固体推移活塞的刚度,因而限制了脉冲管制冷机的制冷效果。
因此,本发明的目的是通过对现有脉冲管制冷机的改进以提高其制冷效率,降低最低制冷温度,增加制冷功率。
本发明提出的多路旁通脉冲管制冷机具有依次相连通的压力波发生器、蓄冷器、冷端热交换器(冷头),脉冲管、小孔节流元件和气库、脉冲管的两端分别装有导流器,压力波发生器的出口与蓄冷器热端相接,蓄冷器冷端通过冷端热交换器(即冷头)与脉冲管冷端相连接,气库通过小孔节流元件与脉冲管热端相连接,其特征是所述脉冲管内适当地设置能使气体均匀、顺利通过的阻力元件,该阻力元件是诸如轴向层叠设置的丝网,在蓄冷器和脉冲管之间部位适当位置处,通过节流元件将蓄冷器和脉冲管二者相连通,也就是在蓄冷器中间部位旁通一股或多股气体,并通过适当的节流元件来控制流量而将旁通气体直接送入脉冲管中部内或从脉冲管出来。
所述脉冲管中的阻力元件可以是布置在旁通气体进、出脉冲管处的接口两侧处;
所述压力波发生器可以是无进,排气阀门的往复式压缩机,也可以是带有配气装置的高、低压气源;也可以是其他形式的压力波气源;
所述蓄冷器和脉冲管可以是薄壁直管、薄壁弯管,或者是薄壁螺旋管;
所述蓄冷器和脉冲管可以是金属或者非金属管;
所述蓄冷器和脉冲管可以同轴布置也可以非同轴布置,当同轴布置时蓄冷器位于脉冲管中间也可以是脉冲管位于蓄冷器中间,并且当蓄冷器和脉冲管同轴布置时,蓄冷器和脉冲管的共同壁面至少具有一个调节蓄冷器和脉冲管之间旁通量的节流孔,也可以是由多孔材料制成的蓄冷器和脉冲管共同壁面以构成蓄冷器和脉冲管二者之间的旁通通路。
以下结合附图对本发明的实施例作进一步说明。
图1是现有脉冲管制冷机的示意图;
图2为根据本发明的多路旁通脉冲管制冷机的实施例剖视示意图,其中脉冲管和蓄冷器为U型布置;
图3为根据本发明的多路旁通脉冲管制冷机的实施例剖视示意图,其中脉冲管和蓄冷器为同轴布置;
请见图2,该图所示为蓄冷器和脉冲管U型布置的本发明的多路旁通脉冲管制冷机实施例。其中压力波发生器1、蓄冷器2、冷端热交换器(即冷头)3、脉冲管5、小孔节流元件8、气库9、依次相通地连接。压力波发生器1为一般的无进、排气阀门的压缩机,蓄冷器2为直金属管,其中具有轴向层叠的丝网填料,蓄冷器2的热端具有散热装置以利于散热,蓄冷器2的冷端通过冷头(即冷端热交换器)3与脉冲管5的冷端相接,冷头3上可以具有散热装置以利于热交换;脉冲管5的两端内分别具有导流器4和6,脉冲管5的热端也具有散热装置以利于散热。脉冲管5的热端通过热端换热器7、节流小孔8与气库9相接通。其特点是,在蓄冷器2和脉冲管5之间的部位处具有节流元件11的旁通气流路将蓄冷器2和脉冲管5相互连通,在旁通气流通路11与脉冲管5的接口的上下部位处的脉冲管5内部具有轴向层叠的丝网10。所述节流元件11为阀门或具有小孔的可调节节流元件。
发明人曾对本发明进行了原理试验,首先利用图1所示小孔脉冲管制冷机流程,无功率最低制冷温度达到91K;然后在其它条件都不改变的情况下,利用图2所示的流程,在脉冲管和蓄冷器分别具冷端三分之一地方用一根毛细管来实现旁通,在旁通进、出脉冲管接口的上下部位处的脉冲管内部设置有几十片轴向层叠的铜丝网,这样脉冲管制冷机的最低制冷温度可达72K。
图3所示为本发明的第二实施例,其与第一实施例不同之处在于蓄冷器2和脉冲管5为同轴布置,即脉冲管5同轴地位于心之中,蓄冷器2的热端与脉冲管5的热端之间的环形断面封闭,脉冲管5的热端具有散热片以利于散热,蓄冷器2的冷端封闭,并在封闭断面侧具有一轴向延伸的散热片以利于冷头3(即冷端热交换器)的换热。脉冲管5同轴地位于蓄冷器2之中,并且其冷端不与蓄冷器2的冷端封闭端面相接触,以保证来自压力波发生器1的气体经过和脉冲管5之间的环形空间由脉冲管5的冷端经过导流器4进入脉冲管5,然后经过导流器6、散热器7、小孔节流件8进入气库9,反之也一样。其特征是,脉冲管5的壁面上具有一个、两个、三个或多个小孔构成蓄冷器2与脉冲管5之间的多个旁通路,并且在每个小孔的两侧于脉冲管5内布置轴向层叠的丝网。
在此实施例中脉冲管5的壁面也可以由多孔材料制成,同样可由多孔材料上的微孔而形成蓄冷器2与脉冲管5之间的旁通通路。
图2和图3所示的实施例中的蓄冷器和脉冲管可以为直的、弯的和螺旋形的。其特征是脉冲管制冷机可以制成各种形状以适应使用时安装空间的需要。
对于技术上熟练的人,对本发明作各种修正亦属于本发明的范围。
Claims (16)
1、多路旁通脉冲管制冷机,该脉冲管制冷机具有依次相通的连接的压力波发生器、蓄冷器、冷头,也就是冷端热交换器、脉冲管、小孔节流件和气库,蓄冷器中装有高热容材料制成的填料,脉冲管两端分别装有导流器,压力波发生器的出口与蓄冷器热端相接,蓄冷器冷端与脉冲管冷端相接而形成冷头,气库通过小孔节流件与脉冲管热端相连接,其特征是,所述脉冲管内适当地设置能使气体均匀、顺利通过的阻力元件,在蓄冷器和脉冲管中间部位的适当位置处,通过节流元件将蓄冷器和脉冲管二者相连通,形成至少一条旁通气流通路。
2、如权利要求1所述的脉冲管制冷机,其特征是,所述脉冲管中的阻力元件由多孔材料制成。
3、如权利要求2所述的脉冲管制冷机,其特征是,所述多孔材料为丝网。
4、如权利要求1或3所述的脉冲管制冷机,其特征是,所述旁通气流通路中的节流元件为阀门。
5、如权利要求1或3所述的脉冲管制冷机,其特征是,所述旁通气流通路中的节流元件为毛细孔管。
6、如权利要求1所述的脉冲管制冷机,其特征是,所述蓄冷器和脉冲管同轴布置。
7、如权利要求6所述的脉冲管制冷机,其特征是,所述脉冲管同轴地位于所述蓄冷器之中,脉冲管壁面上至少具有一个节流通孔。
8、如权利要求6所述的脉冲管制冷机,其特征是,所述蓄冷器同轴地位于所述脉冲管之中,蓄冷器壁面上至少具有一个节流通孔。
9、如权利要求7所述的脉冲管制冷机,其特征是,所述脉冲管由多孔材料制成。
10、如权利要求3所述的脉冲管制冷机,其特征是,所述蓄冷器由多孔材料制成。
11、如权利要求1所述的脉冲管制冷机,其特征是,所述压力波发生器为无进、排气阀门的压缩机。
12、如权利要求1所述的脉冲管制冷机,其特征是,所述压力波发生器为带有配气装置的高、低压气源。
13、如权利要求1所述的脉冲管制冷机,其特征是,所述脉冲管和蓄冷器为薄壁金属管。
14、如权利要求1所述的脉冲管制冷机,其特征是,所述脉冲管和蓄冷器为薄壁非金属管。
15、如权利要求1所述的脉冲管制冷机,其特征是,所述脉冲管和蓄冷器的轴线为直线。
16、如权利要求1所述的脉冲管制冷机,其特征是,所述脉冲管和蓄冷器的轴线为螺旋线。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN92100011A CN1035788C (zh) | 1992-01-04 | 1992-01-04 | 多路旁通脉冲管制冷机 |
JP36156192A JP3179608B2 (ja) | 1992-01-04 | 1992-12-28 | 多重バイパスパルスチューブ型の冷却装置 |
US07/998,806 US5295355A (en) | 1992-01-04 | 1992-12-29 | Multi-bypass pulse tube refrigerator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN92100011A CN1035788C (zh) | 1992-01-04 | 1992-01-04 | 多路旁通脉冲管制冷机 |
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CN1067499A CN1067499A (zh) | 1992-12-30 |
CN1035788C true CN1035788C (zh) | 1997-09-03 |
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CN92100011A Expired - Fee Related CN1035788C (zh) | 1992-01-04 | 1992-01-04 | 多路旁通脉冲管制冷机 |
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US (1) | US5295355A (zh) |
JP (1) | JP3179608B2 (zh) |
CN (1) | CN1035788C (zh) |
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JP3728833B2 (ja) * | 1996-11-20 | 2005-12-21 | アイシン精機株式会社 | パルス管冷凍機 |
EP0851184A1 (fr) * | 1996-12-30 | 1998-07-01 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Réfrigérateur cryogénique |
JP3832038B2 (ja) * | 1997-08-18 | 2006-10-11 | アイシン精機株式会社 | パルス管冷凍機 |
GB2329701B (en) * | 1997-09-30 | 2001-09-19 | Oxford Magnet Tech | Load bearing means in nmr cryostat systems |
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1992
- 1992-01-04 CN CN92100011A patent/CN1035788C/zh not_active Expired - Fee Related
- 1992-12-28 JP JP36156192A patent/JP3179608B2/ja not_active Expired - Fee Related
- 1992-12-29 US US07/998,806 patent/US5295355A/en not_active Expired - Fee Related
Patent Citations (3)
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SU439672A1 (ru) * | 1972-07-24 | 1974-08-15 | Одесский Технологический Институт Холодильной Промышленности | Холодильно-газова машина |
US4845953A (en) * | 1987-05-29 | 1989-07-11 | Aisin Seiki Kabushiki Kaisha | Refrigerating system |
SU1714205A1 (ru) * | 1990-03-22 | 1992-02-23 | Восточное Отделение Всесоюзного Научно-Исследовательского Института Горноспасательного Дела | Насос |
Also Published As
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JP3179608B2 (ja) | 2001-06-25 |
CN1067499A (zh) | 1992-12-30 |
US5295355A (en) | 1994-03-22 |
JPH07260267A (ja) | 1995-10-13 |
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