TWI839961B - How to disassemble a cryogenic freezer - Google Patents
How to disassemble a cryogenic freezer Download PDFInfo
- Publication number
- TWI839961B TWI839961B TW111144735A TW111144735A TWI839961B TW I839961 B TWI839961 B TW I839961B TW 111144735 A TW111144735 A TW 111144735A TW 111144735 A TW111144735 A TW 111144735A TW I839961 B TWI839961 B TW I839961B
- Authority
- TW
- Taiwan
- Prior art keywords
- housing
- aforementioned
- displacer
- scottish
- yoke
- Prior art date
Links
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 19
- 238000001816 cooling Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000011232 storage material Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000003068 static effect Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920001342 Bakelite® Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 101100233916 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) KAR5 gene Proteins 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F25B9/10—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point with several cooling stages
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/01—Geometry problems, e.g. for reducing size
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Refrigerator Housings (AREA)
Abstract
一種極低溫冷凍機的分解方法,極低溫冷凍機,具備:殼體(20),具有下部開口(21);下部蓋殼,封住下部開口(21);蘇格蘭軛軸(45),收納於殼體(20)中,貫穿下部蓋殼而向殼體(20)外延伸;以及蘇格蘭軛導件(54),可拆卸地設置於殼體(20)內,引導蘇格蘭軛軸(45)的軸向移動,本方法包括如下步驟:從殼體(20)拆卸下部蓋殼;以及將蘇格蘭軛導件(54)從下部開口(21)取出到殼體(20)之外。A method for disassembling a cryogenic freezer, the cryogenic freezer comprising: a housing (20) having a lower opening (21); a lower cover shell sealing the lower opening (21); a Scotch yoke (45) received in the housing (20), passing through the lower cover shell and extending out of the housing (20); and a Scotch yoke (54) detachably disposed in the housing (20) to guide the axial movement of the Scotch yoke (45). The method comprises the following steps: removing the lower cover shell from the housing (20); and taking the Scotch yoke (54) out of the housing (20) from the lower opening (21).
Description
本發明係有關一種極低溫冷凍機的分解方法。The present invention relates to a method for decomposing a cryogenic freezer.
已知一種極低溫冷凍機,其係具備:驅動馬達;蘇格蘭軛,係將驅動馬達的旋轉轉換為直線往復移動;殼體,係安裝有驅動馬達,且收納蘇格蘭軛;以及導件,係引導蘇格蘭軛的直線往復移動,並且以限制繞旋轉軸的傾斜移動之方式設置於殼體。 [先前技術文獻] [專利文獻] A cryogenic freezer is known, which comprises: a drive motor; a Scotch yoke that converts the rotation of the drive motor into a linear reciprocating motion; a housing on which the drive motor is mounted and in which the Scotch yoke is housed; and a guide that guides the linear reciprocating motion of the Scotch yoke and is disposed on the housing in a manner that limits the tilting motion around the rotating shaft. [Prior art document] [Patent document]
[專利文獻1] 日本特開2015-55374號公報[Patent Document 1] Japanese Patent Application Publication No. 2015-55374
[發明所欲解決之問題][The problem the invention is trying to solve]
在現場多年使用極低溫冷凍機之過程中,導件可能會由於與蘇格蘭軛的滑動而逐年磨耗。尤其,在蘇格蘭軛由金屬材料形成,且導件由合成樹脂材料形成之情況下,導件容易磨耗。隨著磨耗的進行,導件難以發揮其作用。During the years of using a cryogenic freezer in the field, the guide may wear out year by year due to sliding with the Scotch yoke. In particular, when the Scotch yoke is formed of a metal material and the guide is formed of a synthetic resin material, the guide is easily worn out. As the wear progresses, the guide becomes less able to perform its function.
本發明的一態樣的例示性目的之一為提供一種用於更換蘇格蘭軛導件的極低溫冷凍機的分解方法。 [解決問題之技術手段] One of the exemplary purposes of one aspect of the present invention is to provide a method for disassembling an ultra-low temperature freezer for replacing a Scottish guide. [Technical means for solving the problem]
依據本發明的一態樣,提供一種極低溫冷凍機的分解方法。極低溫冷凍機,具備:殼體,具有下部開口;下部蓋殼,封住下部開口;蘇格蘭軛軸,收納於殼體中,貫穿下部蓋殼向殼體外延伸;以及蘇格蘭軛導件,可拆卸地設置於殼體內,引導蘇格蘭軛軸的軸向移動。本方法包括如下步驟:從殼體拆卸下部蓋殼;以及將蘇格蘭軛導件從下部開口取出到殼體之外。According to one aspect of the present invention, a method for disassembling an ultra-low temperature freezer is provided. The ultra-low temperature freezer comprises: a housing having a lower opening; a lower cover shell sealing the lower opening; a Scotch yoke received in the housing, passing through the lower cover shell and extending out of the housing; and a Scotch yoke detachably disposed in the housing to guide the axial movement of the Scotch yoke. The method comprises the following steps: removing the lower cover shell from the housing; and taking the Scotch yoke out of the housing from the lower opening.
另外,在方法、裝置、系統等之間相互置換以上構成要素的任意組合或本發明的構成要素或表述之內容,作為本發明的態樣亦同樣有效。 [發明之效果] In addition, any combination of the above components or the components or expressions of the present invention may be replaced with each other between methods, devices, systems, etc., which is also effective as an aspect of the present invention. [Effects of the invention]
依據本發明,能夠提供一種用於更換蘇格蘭軛導件的極低溫冷凍機的分解方法。According to the present invention, a disassembly method of an ultra-low temperature freezer for replacing a Scottish yoke can be provided.
以下,參照圖式對用於實施本發明的方式進行詳細說明。在說明及圖式中,對相同或等同的構成要素、構件、處理標註相同的符號並適當省略重複說明。為了便於說明,適當設定圖示之各部的縮尺或形狀,只要沒有特別提及,則不限定性地進行解釋。實施方式係例示,並不對本發明的範圍做任何限定。實施方式中所記述之所有特徵或其組合並不一定係發明的本質。Hereinafter, the method for implementing the present invention will be described in detail with reference to the drawings. In the description and drawings, the same or equivalent components, members, and processes are marked with the same symbols and repeated descriptions are omitted as appropriate. For the convenience of explanation, the scale or shape of each part of the diagram is appropriately set, and unless otherwise specifically mentioned, it is interpreted in a non-limiting manner. The implementation method is an example and does not limit the scope of the present invention in any way. All the features or their combinations described in the implementation method are not necessarily the essence of the invention.
圖1至圖3係概略地表示實施方式之極低溫冷凍機10之圖。圖1表示極低溫冷凍機10的冷頭的外觀,圖2表示冷頭的低溫部的內部結構。圖3表示冷頭的驅動部的內部結構。極低溫冷凍機10通常以低溫部配置於真空容器內,驅動部配置於真空容器外的周圍環境(例如室溫大氣壓環境)之方式設置於未圖示之真空容器中。作為一例,極低溫冷凍機10係二段式的吉福德・麥克馬洪(Gifford-McMahon;GM)冷凍機。FIG. 1 to FIG. 3 are diagrams schematically showing an ultra-low
極低溫冷凍機10具備壓縮機12和膨脹機14。壓縮機12構成為從膨脹機14回收極低溫冷凍機10的工作氣體,使回收之工作氣體升壓,再度將工作氣體供給至膨脹機14。由壓縮機12和膨脹機14構成極低溫冷凍機10的冷凍循環,因而極低溫冷凍機10能夠提供所期望的極低溫冷卻。膨脹機14有時亦稱為冷頭。工作氣體亦稱為冷媒氣體,通常為氦氣,但亦可以使用適當的其他氣體。為了便於理解,在圖1中利用箭頭表示工作氣體的流動方向。The
另外,通常,從壓縮機12供給至膨脹機14之工作氣體的壓力,和從膨脹機14回收至壓縮機12之工作氣體的壓力,都比大氣壓高很多,能夠分別稱為第1高壓及第2高壓。為了便於說明,第1高壓及第2高壓分別簡稱為高壓及低壓。典型地,高壓例如為2~3MPa。低壓例如為0.5~1.5MPa,例如約為0.8MPa。為了便於理解,利用箭頭表示工作氣體的流動方向。In addition, usually, the pressure of the working gas supplied from the
膨脹機14具備冷凍機缸體16、置換器組裝體(以下,亦簡稱為置換器)18及冷凍機殼體(以下,亦簡稱為殼體)20。冷凍機缸體16引導置換器18的直線往復運動,並且在與置換器18之間形成作為工作氣體的膨脹空間的膨脹室(32、34)。冷凍機缸體16固定於冷凍機殼體20,藉此構成膨脹機14的框體,收納置換器18之氣密空間形成於冷凍機缸體16內。The
在本說明書中,為了說明極低溫冷凍機10的構成要素之間的位置關係,為了方便,將接近置換器的軸向往復移動的上靜止點側標記為「上」,將接近下靜止點側標記為「下」。上靜止點為膨脹空間的容積成為最大之置換器的位置,下靜止點為膨脹空間的容積成為最小之置換器的位置。在極低溫冷凍機10的運轉時,產生溫度從軸向上方往下方下降之溫度梯度,因此亦能夠將上側稱為高溫側,將下側稱為低溫側。In this specification, in order to explain the positional relationship between the components of the
冷凍機缸體16具有第1缸體16a和第2缸體16b。作為一例,第1缸體16a和第2缸體16b為具有圓筒形狀之構件,第2缸體16b的直徑小於第1缸體16a的直徑。第1缸體16a和第2缸體16b同軸地配置,第1缸體16a的下端與第2缸體16b的上端剛性地連結。The
置換器組裝體18具備相互連結之第1置換器18a和第2置換器18b,它們一體地移動。作為一例,第1置換器18a和第2置換器18b為具有圓筒形狀之構件,第2置換器18b的直徑小於第1置換器18a的直徑。第1置換器18a和第2置換器18b同軸地配置。The
第1置換器18a收納於第1缸體16a中,第2置換器18b收納於第2缸體16b中。第1置換器18a能夠沿著第1缸體16a在軸向上往復移動,第2置換器18b能夠沿著第2缸體16b在軸向上往復移動。The
如圖2所示,第1置換器18a收納第1蓄冷器26。第1蓄冷器26藉由在第1置換器18a的筒狀的本體部中例如填充銅等金屬絲網或其他適當的第1蓄冷材料而形成。第1置換器18a的上蓋部及下蓋部可以作為與第1置換器18a的本體部不同的構件而提供,第1置換器18a的上蓋部及下蓋部亦可以藉由緊固、熔接等適當的方法固定於本體,從而第1蓄冷材料收納於第1置換器18a中。As shown in FIG. 2 , the
同樣地,第2置換器18b收納第2蓄冷器28。第2蓄冷器28藉由在第2置換器18b的筒狀的本體部中,例如填充鉍等非磁性蓄冷材料、HoCu2等磁性蓄冷材料或其他適當的第2蓄冷材料而形成。第2蓄冷材料亦可以形成為粒狀。第2置換器18b的上蓋部及下蓋部可以作為與第2置換器18b的本體部不同的構件而提供,第2置換器18b的上蓋部及下蓋部亦可以藉由緊固、熔接等適當的方法固定於本體,從而第2蓄冷材料收納於第2置換器18b中。Similarly, the
置換器18在冷凍機缸體16的內部形成上部室30、第1膨脹室32及第2膨脹室34。為了與應藉由極低溫冷凍機10冷卻之所期望的物體或媒體進行熱交換,膨脹機14具備第1冷卻台33和第2冷卻台35。上部室30形成於第1置換器18a的上蓋部與第1缸體16a的上部之間。第1膨脹室32形成於第1置換器18a的下蓋部與第1冷卻台33之間。第2膨脹室34形成於第2置換器18b的下蓋部與第2冷卻台35之間。第1冷卻台33以包圍第1膨脹室32之方式固著於第1缸體16a的下部,第2冷卻台35以包圍第2膨脹室34之方式固著於第2缸體16b的下部。The displacer 18 forms an
第1蓄冷器26透過形成於第1置換器18a的上蓋部之工作氣體流路36a與上部室30連接,透過形成於第1置換器18a的下蓋部之工作氣體流路36b而與第1膨脹室32連接。第2蓄冷器28透過從第1置換器18a的下蓋部向第2置換器18b的上蓋部形成之工作氣體流路36c與第1蓄冷器26連接。又,第2蓄冷器28透過形成於第2置換器18b的下蓋部之工作氣體流路36d而與第2膨脹室34連接。The
為了使第1膨脹室32、第2膨脹室34與上部室30之間的工作氣流不被導入冷凍機缸體16與置換器18之間的餘隙,而被導入第1蓄冷器26、第2蓄冷器28,亦可以設置有第1密封件38a、第2密封件38b。第1密封件38a亦可以以配置於第1置換器18a與第1缸體16a之間之方式裝設於第1置換器18a的上蓋部。第2密封件38b亦可以以配置於第2置換器18b與第2缸體16b之間之方式裝設於第2置換器18b的上蓋部。In order to prevent the working airflow between the
如圖3所示,冷凍機殼體20,具備:殼體本體22,係具有下部開口21;以及下部蓋殼24,係封住下部開口21。下部開口21形成於殼體本體22的下表面。如圖所示,由殼體本體22和下部蓋殼24形成之殼體內部容積20a亦可以與壓縮機12的低壓側連接,維持於低壓。As shown in FIG3 , the
下部蓋殼24分隔殼體內部容積20a與冷凍機缸體16內的置換器收納空間(上部室30)。下部蓋殼24整體具有圓盤狀的形狀,更具體而言,具有上側的大徑部和下側的小徑部。第1密封構件25a設置於下部蓋殼24與冷凍機缸體16之間,以保持冷凍機缸體16的內部容積的氣密性,第2密封構件25b設置於下部蓋殼24與殼體本體22之間,以保持殼體內部容積20a的氣密性。如圖所示,第1密封構件25a亦可以裝設於下部蓋殼24的小徑部,第2密封構件25b亦可以裝設於下部蓋殼24的大徑部。The
下部蓋殼24可拆卸地嵌入於下部開口21,冷凍機缸體16的上部凸緣部藉由螺栓等緊固構件緊固於殼體本體22。如此,下部蓋殼24夾持於殼體本體22與冷凍機缸體16的上部凸緣部之間。下部蓋殼24未藉由緊固固定於殼體本體22。但是,亦可以採用殼體本體22和下部蓋殼24藉由螺栓等緊固構件緊固之結構。The
又,膨脹機14具備膨脹機馬達40、旋轉閥42及運動轉換機構43。膨脹機馬達40安裝於冷凍機殼體20,更具體而言,安裝於殼體本體22的側面。為了保持殼體內部容積20a的氣密性,未圖示之密封構件亦可以設置於膨脹機馬達40和殼體本體22的安裝面上。旋轉閥42和運動轉換機構43收納於冷凍機殼體20中。The
膨脹機馬達40作為置換器18及旋轉閥42的驅動源而設置於膨脹機14。膨脹機馬達40可以為適當的電動馬達,亦可以構成為使馬達旋轉軸40a以恆定的旋轉速度旋轉,或設為能夠可變地控制馬達旋轉軸40a的旋轉速度。The
旋轉閥42構成為將壓縮機12的高壓側和低壓側交替地與冷凍機缸體16(亦即,上部室30、第1膨脹室32及第2膨脹室34)連接,週期性地切換冷凍機缸體16的吸氣和排氣。The
旋轉閥42具備閥轉子42a和閥定子42b,閥轉子42a以相對於閥定子42b一邊滑動一邊旋轉之方式與閥定子42b接觸。閥轉子42a被支撐為能夠相對於殼體本體22旋轉,閥定子42b被支撐為不能相對於殼體本體22旋轉。彈簧等彈性體亦可以介在於閥定子42b與殼體本體22之間,該彈性體用於在閥轉子42a的旋轉軸的方向上將閥定子42b朝向閥轉子42a緊壓。The
在冷凍機殼體20上形成有將旋轉閥42連接於上部室30之殼體內部流路20b,在旋轉閥42的閥轉子42a和閥定子42b上以將殼體內部流路20b與壓縮機12的高壓側和殼體內部容積20a交替地連接之方式形成有閥內部流路。閥內部流路能夠採用各式各樣的公知的形態,在此不再詳述。The
運動轉換機構43構成為將膨脹機馬達40與旋轉閥42和置換器18連結,以將馬達旋轉軸40a的旋轉傳遞給旋轉閥42並轉換為置換器18的直線往復移動。運動轉換機構43的一例待留後述。馬達旋轉軸40a的旋轉一圈經由運動轉換機構43帶來置換器18的一次往復,因而工作氣體的膨脹空間的容積週期性地變化。同時,馬達旋轉軸40a的旋轉一圈經由運動轉換機構43帶來旋轉閥42的旋轉一圈,因而工作氣體的膨脹空間的壓力週期性地變化。The
如此,同步之容積變動和壓力變動被帶入膨脹空間,構成極低溫冷凍機10的冷凍循環,因而極低溫冷凍機10能夠提供期望的極低溫冷卻。第1冷卻台33能夠冷卻至第1冷卻溫度,第2冷卻台35能夠冷卻至比第1冷卻溫度低的第2冷卻溫度。第1冷卻溫度例如可以在約10K~約100K的範圍內,或約20K~約40K的範圍內。第2冷卻溫度例如可以在約20K以下、或約10K以下、或約1K~約4K的範圍內。In this way, the synchronous volume change and pressure change are brought into the expansion space, forming a refrigeration cycle of the
圖4係概略地表示實施方式之極低溫冷凍機10的冷頭驅動部的分解立體圖之圖。圖5係概略地表示實施方式之冷頭的運動轉換機構43的主要部分的分解立體圖之圖。參照圖3至圖5,對運動轉換機構43的例示性方式進行說明。Fig. 4 is a diagram schematically showing an exploded perspective view of a cold head drive unit of the
運動轉換機構43在該實施方式中為蘇格蘭軛,且具備:具有曲柄銷44a之曲柄44、蘇格蘭軛軸45及曲柄銷軸承46。蘇格蘭軛軸45,具備:蘇格蘭軛板45a、上部桿45b及下部桿45c。蘇格蘭軛軸45亦可以例如由不銹鋼等金屬材料形成。The
曲柄44固定於馬達旋轉軸40a。曲柄銷44a在從馬達旋轉軸40a偏心之位置與馬達旋轉軸40a平行地延伸。曲柄銷44a從曲柄44朝向相對於曲柄44與馬達旋轉軸40a相反的一側延伸。The
蘇格蘭軛板45a為具有橫長窗47之矩形的板狀構件。橫長窗47沿軸向及與馬達旋轉軸40a垂直的方向延伸。曲柄銷軸承46可滾動地配置於該橫長窗47上。曲柄銷軸承46亦可以為例如滾子軸承。在曲柄銷軸承46的中心形成有與曲柄銷44a卡合之卡合孔46a,曲柄銷44a貫穿卡合孔46a。The
在相對於蘇格蘭軛板45a與曲柄44相反的一側,旋轉閥42的閥轉子42a配置成使其中心軸與馬達旋轉軸40a一致,將卡合孔46a貫穿之曲柄銷44a的前端固定於閥轉子42a。On the side opposite to the
上部桿45b從蘇格蘭軛板45a的上框中央向上方延伸,下部桿45c從蘇格蘭軛板45a的下框中央向下方延伸,該些桿同軸配置。蘇格蘭軛板45a和上部桿45b收納於冷凍機殼體20中,下部桿45c將下部蓋殼24貫穿而向冷凍機殼體20外延伸。下部桿45c的前端在冷凍機缸體16內與置換器18連結。The
第1滑動軸承48a設置於上部桿45b與殼體本體22之間,第2滑動軸承48b設置於下部桿45c與下部蓋殼24之間。殼體本體22在其上部具有收納上部桿45b之凹部,第1滑動軸承48a配置於該凹部,將上部桿45b支撐為能夠沿軸向滑動。下部蓋殼24在中心部具有貫穿孔,第2滑動軸承48b配置於該貫穿孔中,將下部桿45c支撐為能夠沿軸向滑動。在第2滑動軸承48b上設置有例如滑動密封件或餘隙密封件之類的密封部,氣密地構成,因而殼體內部容積20a與上部室30隔離。不存在殼體內部容積20a與上部室30的直接的氣體流通。The first sliding
在與置換器18連結之下部桿45c的前端藉由固定銷49固定有套環部50。套環部50為供置換器組裝體18的前端插入之短筒狀的構件。在下部桿45c的前端及套環部50,在與軸向正交之方向上形成有貫穿孔,藉由在該貫穿孔中嵌入固定銷49,套環部50與下部桿45c被固定。A
第1置換器18a具有蓋部52a和本體部52b。蓋部52a為第1置換器18a的上蓋,具有圓盤狀的形狀。蓋部52a例如由經過氧化鋁膜處理之鋁合金等金屬材料或其他材料形成。本體部52b具有圓筒狀的形狀,並且在其內部具有蓄冷器。本體部52b由合成樹脂材料或其他材料形成,例如亦可以由電木等酚醛樹脂形成。沿軸向貫穿蓋部52a和本體部52b的上端部而形成有上述工作氣體流路36a。上述第1密封件38a亦可以在蓋部52a和本體部52b各自的最外周部夾持於它們之間。蓋部52a與本體部52b例如使用螺栓等緊固構件,或例如藉由接著等其他方法相互固定。The
在蓋部52a的中心部形成有收納下部桿45c的前端及套環部50之貫穿孔。套環部50在其下端部具有向徑向外側擴展之凸緣部,該凸緣部藉由被第1置換器18a的蓋部52a和本體部52b夾持,因而下部桿45c及套環部50連結於第1置換器18a。如此,置換器18安裝於蘇格蘭軛軸45。A through hole is formed in the center of the
因此,當膨脹機馬達40被驅動而馬達旋轉軸40a旋轉時,與曲柄銷44a卡合之曲柄銷軸承46以描繪圓之方式旋轉。此時,曲柄銷軸承46在蘇格蘭軛板45a的橫長窗47內往復移動,與此同時,蘇格蘭軛軸45及置換器18沿軸向往復運動。如此,膨脹機馬達40驅動蘇格蘭軛軸45的軸向移動。Therefore, when the
圖6(a)及圖6(b)係概略地表示實施方式之蘇格蘭軛導件54之圖。圖6(a)概略地表示沿圖3所示之A-A剖面之殼體本體22的剖面,圖3(b)概略地表示沿圖6(a)所示之B-B剖面的一部分。Fig. 6 (a) and Fig. 6 (b) are diagrams schematically showing the
如圖所示,在該實施方式中,設置有蘇格蘭軛導件54。蘇格蘭軛導件54構成為引導蘇格蘭軛軸45的軸向移動,並且限制蘇格蘭軛軸45的繞軸旋轉。As shown in the figure, in this embodiment, a
蘇格蘭軛導件54具備複數個(在該例子中為2個)銷54a、54b,各銷54a沿蘇格蘭軛軸45的軸向延伸。銷54a、54b具有圓柱狀的形狀,例如亦可以由氟系樹脂等耐磨耗性優異的合成樹脂材料或其他材料形成。殼體本體22具有複數個(在該例子中為2個)銷插入孔56,供複數個銷54a、54b分別可拆卸地插入該銷插入孔56中。因此,蘇格蘭軛導件54可拆卸地設置於冷凍機殼體20內。如後所述,蘇格蘭軛軸45及蘇格蘭軛導件54能夠透過殼體本體22的下部開口21從殼體本體22取出。The Scotch guide 54 has a plurality of (two in this example) pins 54a and 54b, each of which extends in the axial direction of the
蘇格蘭軛導件54在驅動蘇格蘭軛軸45的軸向移動之馬達旋轉軸40a的方向上配置於與下部桿45c不同的位置,並且與蘇格蘭軛板45a相鄰。在該實施方式中,蘇格蘭軛導件54相對於蘇格蘭軛板45a及下部桿45c朝馬達旋轉軸40a側偏移配置,但亦可以配置於旋轉閥42側。The
蘇格蘭軛導件54的各銷54a的圓筒狀的側面,與形成有橫長窗47之蘇格蘭軛板45a的側面58接觸。一個銷54a在蘇格蘭軛板45a的右框部與側面58接觸,另一個銷54a在蘇格蘭軛板45a的左框部與側面58接觸。The cylindrical side surface of each
因此,蘇格蘭軛導件54能夠在各銷54a的側面引導蘇格蘭軛板45a的軸向移動。又,蘇格蘭軛導件54能夠藉由銷54a限制蘇格蘭軛軸45的繞軸旋轉。Therefore, the Scotch guide 54 can guide the axial movement of the
圖7及圖8係概略地表示實施方式之極低溫冷凍機10的分解方法之圖。首先,如圖7所示,膨脹機馬達40從冷凍機殼體20拆卸(S10)。拆卸將膨脹機馬達40固定於冷凍機殼體20之緊固構件,將膨脹機馬達40從殼體本體22的側面拆卸。亦可以膨脹機馬達40與曲柄44一起拆卸。同時,亦拆卸安裝於冷凍機殼體20之高壓配管和低壓配管。FIG. 7 and FIG. 8 are diagrams schematically showing a method of disassembling the
接著,冷凍機殼體20與冷凍機缸體16的固定被解除(S11)。如上所述,殼體本體22藉由緊固構件安裝於冷凍機缸體16,藉由拆卸緊固構件,冷凍機殼體20從冷凍機缸體16拆卸。然後,將冷凍機殼體20從冷凍機缸體16提起。藉此,能夠將置換器18與冷凍機殼體20一起從冷凍機缸體16拉出。Next, the fixing of the
接著,從蘇格蘭軛軸45拆卸置換器18(S12)。第1置換器18a的蓋部52a與本體部52b的固定被解除,本體部52b從蓋部52a拆卸。進而,從蘇格蘭軛軸45的下部桿45c拆卸固定銷49及套環部50,亦拆卸蓋部52a(S13)。如此,在從冷凍機殼體20拆卸下部蓋殼24之前,將置換器18從蘇格蘭軛軸45拆卸。然後,從冷凍機殼體20拆卸下部蓋殼24(S13)。Next, the
如圖8所示,第2密封構件25b從殼體本體22拆卸(S14)。另外,為了容易理解,在圖8中,上下顛倒(亦即,使下部開口21朝向上方)圖示。如上所述,第2密封構件25b夾持於下部蓋殼24與殼體本體22之間而配置於下部開口21內。藉由將下部蓋殼24從殼體本體22拆卸,從再度開放之下部開口21取出第2密封構件25b。As shown in FIG8 , the
接著,將蘇格蘭軛軸45從下部開口21拉出到冷凍機殼體20之外(S15)。藉由在取出蘇格蘭軛導件54之前取出蘇格蘭軛軸45,能夠在冷凍機殼體20內擴大用於拆卸蘇格蘭軛導件54的作業空間。Next, the
然後,將蘇格蘭軛導件54從下部開口21取出到冷凍機殼體20之外。首先,將一個銷54a透過下部開口21取出到冷凍機殼體20之外(S16),接著,將另一個銷54b亦透過下部開口21取出到冷凍機殼體20之外(S17)。Then, the
如此拆卸銷54a、54b後,安裝新銷54a、54b。然後,以與上述相反的順序再度組裝膨脹機14。如此,能夠將磨耗之蘇格蘭軛導件54更換為新品。藉此,能夠確實地防止蘇格蘭軛軸45的繞軸旋轉。After the
依據實施方式,使用具體的語句對本發明進行了說明,但實施方式僅表示本發明的原理、應用的一個側面,在不脫離技術方案所限定之本發明的思想之範圍內,可以對實施方俞進行許多變形例或配置的變更。 [產業上之可利用性] The present invention is described using specific words based on the implementation method, but the implementation method only represents one aspect of the principle and application of the present invention. Many variations or configuration changes can be made to the implementation method without departing from the scope of the idea of the present invention defined by the technical solution. [Industrial Applicability]
本發明能夠利用於極低溫冷凍機的分解方法的領域。The present invention can be used in the field of decomposition methods of ultra-low temperature freezers.
10:極低溫冷凍機
21:下部開口
24:下部蓋殼
40a:馬達旋轉軸
45:蘇格蘭軛軸
45a:蘇格蘭軛板
54:蘇格蘭軛導件
54a:銷
56:銷插入孔
10: Cryogenic freezer
21: Lower opening
24:
[圖1]係概略地表示實施方式之極低溫冷凍機之圖。 [圖2]係概略地表示實施方式之極低溫冷凍機之圖。 [圖3]係概略地表示實施方式之極低溫冷凍機之圖。 [圖4]係概略地表示實施方式之極低溫冷凍機的冷頭驅動部的分解立體圖之圖。 [圖5]係概略地表示實施方式之冷頭的運動轉換機構的主要部分的分解立體圖之圖。 [圖6]中,圖6(a)及圖6(b)係概略地表示實施方式之蘇格蘭軛導件之圖。 [圖7]係概略地表示實施方式之極低溫冷凍機的分解方法之圖。 [圖8]係概略地表示實施方式之極低溫冷凍機的分解方法之圖。 [Figure 1] is a diagram schematically showing an ultra-low temperature freezer of an embodiment. [Figure 2] is a diagram schematically showing an ultra-low temperature freezer of an embodiment. [Figure 3] is a diagram schematically showing an ultra-low temperature freezer of an embodiment. [Figure 4] is a diagram schematically showing an exploded perspective view of a cold head drive unit of an ultra-low temperature freezer of an embodiment. [Figure 5] is a diagram schematically showing an exploded perspective view of a main part of a motion conversion mechanism of a cold head of an embodiment. [Figure 6], Figures 6(a) and 6(b) are diagrams schematically showing a Scottish guide of an embodiment. [Figure 7] is a diagram schematically showing a method for disassembling an ultra-low temperature freezer of an embodiment. [Figure 8] is a diagram schematically showing the disassembly method of the ultra-low temperature freezer in the implementation method.
20:冷凍機殼體 20: Freezer casing
21:下部開口 21: Lower opening
22:殼體本體 22: Shell body
25b:第2密封構件 25b: Second sealing member
45:蘇格蘭軛軸 45: Scottish axis
54:蘇格蘭軛導件 54: Scottish yoke guide
54a,54b:銷 54a,54b: Pin
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021200279A JP2023085949A (en) | 2021-12-09 | 2021-12-09 | Disassembling method for cryogenic refrigerator |
JP2021-200279 | 2021-12-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
TW202323742A TW202323742A (en) | 2023-06-16 |
TWI839961B true TWI839961B (en) | 2024-04-21 |
Family
ID=86730128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW111144735A TWI839961B (en) | 2021-12-09 | 2022-11-23 | How to disassemble a cryogenic freezer |
Country Status (7)
Country | Link |
---|---|
US (1) | US20240318875A1 (en) |
EP (1) | EP4446671A1 (en) |
JP (1) | JP2023085949A (en) |
KR (1) | KR20240122426A (en) |
CN (1) | CN118251576A (en) |
TW (1) | TWI839961B (en) |
WO (1) | WO2023105964A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0432302B2 (en) * | 1981-03-30 | 1992-05-28 | ||
JP2015055374A (en) * | 2013-09-10 | 2015-03-23 | 住友重機械工業株式会社 | Ultra-low temperature freezer |
JP2017142036A (en) * | 2016-02-12 | 2017-08-17 | アイシン精機株式会社 | GM refrigerator |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011129317A1 (en) * | 2010-04-14 | 2011-10-20 | 住友重機械工業株式会社 | Cryogenic refrigerator |
JP2019095090A (en) * | 2017-11-20 | 2019-06-20 | 住友重機械工業株式会社 | Cryogenic refrigerator |
-
2021
- 2021-12-09 JP JP2021200279A patent/JP2023085949A/en active Pending
-
2022
- 2022-10-25 EP EP22903896.3A patent/EP4446671A1/en active Pending
- 2022-10-25 CN CN202280076068.0A patent/CN118251576A/en active Pending
- 2022-10-25 WO PCT/JP2022/039683 patent/WO2023105964A1/en active Application Filing
- 2022-10-25 KR KR1020247014919A patent/KR20240122426A/en unknown
- 2022-11-23 TW TW111144735A patent/TWI839961B/en active
-
2024
- 2024-05-29 US US18/677,840 patent/US20240318875A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0432302B2 (en) * | 1981-03-30 | 1992-05-28 | ||
JP2015055374A (en) * | 2013-09-10 | 2015-03-23 | 住友重機械工業株式会社 | Ultra-low temperature freezer |
JP2017142036A (en) * | 2016-02-12 | 2017-08-17 | アイシン精機株式会社 | GM refrigerator |
Also Published As
Publication number | Publication date |
---|---|
KR20240122426A (en) | 2024-08-12 |
CN118251576A (en) | 2024-06-25 |
US20240318875A1 (en) | 2024-09-26 |
EP4446671A1 (en) | 2024-10-16 |
WO2023105964A1 (en) | 2023-06-15 |
JP2023085949A (en) | 2023-06-21 |
TW202323742A (en) | 2023-06-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI473956B (en) | Cooler type freezer | |
JP5632241B2 (en) | Cryo pump and cryogenic refrigerator | |
JP6214498B2 (en) | Cryogenic refrigerator | |
JP2780928B2 (en) | Low-temperature device using regenerator refrigerator and cooling method | |
JPH07324831A (en) | Cold accumulating type refrigerator | |
TWI839961B (en) | How to disassemble a cryogenic freezer | |
CN107894110B (en) | Cryogenic refrigerator | |
WO2005121658A2 (en) | Cryocooler cold-end assembly apparatus and method | |
TW201942469A (en) | Cryogenic refrigerator | |
JP6573845B2 (en) | Cryogenic refrigerator | |
JP6071917B2 (en) | Stirling refrigerator | |
JP2017048937A (en) | Cryogenic refrigeration machine | |
WO2011105684A2 (en) | Displacer valve for a cryogenic refrigerator | |
WO2023149130A1 (en) | Gifford-mcmahon (gm) refrigerator first-stage displacer, first-stage displacer assembly, and gifford-mcmahon refrigerator | |
TWI804802B (en) | Extremely low temperature freezer and sealing components | |
EP4119865B1 (en) | Compressor unit of a split stirling cryogenic refrigeration device | |
JP2884884B2 (en) | Refrigerator and method for removing impurities from working gas | |
US20220290902A1 (en) | Cryocooler | |
JP2921220B2 (en) | Reverse Stirling cycle refrigerator | |
JP2017101882A (en) | Cryogenic refrigerator | |
JPH08152213A (en) | Gas compressor and expansion device | |
JP2002357369A (en) | Refrigerating machine and assembling method thereof | |
GB2348694A (en) | Cryogenic coolers | |
JPH10253186A (en) | Cold storage freezer | |
JPH10288415A (en) | Stirling refrigerator |