CN104534718A - Hollow discharger for stirling cryocooler and vacuum air extraction device thereof - Google Patents
Hollow discharger for stirling cryocooler and vacuum air extraction device thereof Download PDFInfo
- Publication number
- CN104534718A CN104534718A CN201410748300.8A CN201410748300A CN104534718A CN 104534718 A CN104534718 A CN 104534718A CN 201410748300 A CN201410748300 A CN 201410748300A CN 104534718 A CN104534718 A CN 104534718A
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- China
- Prior art keywords
- displacer
- bleeding
- spool
- discharger
- valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a hollow discharger for a stirling cryocooler and a vacuum air extraction device thereof. The stirling cryocooler comprises an improved discharger end cover, a discharger casing, a valve element, an air extraction valve seat and an air extraction valve rod. The hollow discharger is applied to a regenerator and the stirling cryocooler of the discharger, the vacuumizing is conducted on the discharger, the vacuum degree is kept, and the heat conductivity of the discharger is effectively reduced. The valve element is in threaded connection with the discharger end cover, a sealing groove is formed in the bottom of the valve, and a sealing ring is installed. The air extraction valve seat is in threaded connection with the discharger end cover, sealing rings are installed on the upper end face of the air extraction valve and the discharger end cover, and a hole is formed in the side of the extraction valve and connected with a vacuum pump. One end of the air extraction valve is embedded in a straight slot in the top end of the valve element and used for screw the valve element out. A sealing ring is arranged between the air extraction valve rod and the air extraction valve seat for sealing. In the vacuumizing process, air in the discharger is extracted from a through hole of the valve element. After the vacuumizing process, the valve element is screwed tightly, the sealing ring is pressed tightly, and vacuum sealing in the discharger can be achieved.
Description
Technical field
The present invention relates to a kind of for sterlin refrigerator, be specifically related to a kind of hollow displacer for sterlin refrigerator and vacuum suction device thereof.
Background technology
Hollow displacer is applied to the sterlin refrigerator that regenerator and displacer split, because displacer two ends are respectively the hot chamber of decompressor and expansion chamber, the temperature difference reaches more than 220K, during the motion of its high-frequency reciprocating, if internal piston exists air, whole piston can be caused to form a heat carrier, constantly amount of heat is conducted to expansion chamber from the hot chamber of decompressor, cause loss of refrigeration capacity, one of method solving this problem is exactly keep in displacer being vacuum, reduces the thermal conductivity of displacer.
Summary of the invention
The object of the invention is a kind of hollow displacer for sterlin refrigerator of design and vacuum suction device thereof, solve the vacuum suction problem of this type displacer.
Vacuum suction device of the present invention comprises the displacer end cap 1 of improvement, displacer housing 9, spool 2, valve seat 4 of bleeding, valve rod 5 of bleeding, valve stem handle 8, and three place's sealing rings 3,6,7; Wherein:
Described spool 2 is threaded connection with displacer end cap 1, opens seal groove bottom spool, installs sealing ring 1; Valve seat 4 of bleeding is threaded connection with displacer end cap 1, and valve seat 4 of bleeding is installed sealing ring 26 with displacer end cap 1 upper surface and sealed, and valve seat 4 lateral opening hole of bleeding connects vavuum pump; Valve rod 5 one end of bleeding embeds in spool 2 top flat recess, in order to spool 2 of back-outing, and the valve rod 5 and bleed between valve seat 4 and have sealing ring 37 to seal of bleeding, valve rod 5 top of bleeding coordinates with valve stem handle 8 installs; When vacuumizing, in displacer, air is drawn out of by cross through hole 201 in spool 2 and blind hole 202, after vacuumizing, tightens spool 2, press seal circle 1, realizes vacuum seal in displacer.
A tapped interior blind hole 101 is had in described displacer end cap 1, there is bottom tapped blind hole a passage 102, this internal thread coordinates with the external screw thread of spool, blind hole 101 base plane need reach the fineness of more than 0.8 as sealing surface, displacer end cap installs milling pair of planar 103 bottom cylindrical spring face, fixes when screwing as blind hole 101 internal thread and other parts; Displacer end cap 1 and displacer housing 9 laser weld.
Described spool 2 has a cross through hole 201 and a blind hole 202 perpendicular to it; There is a seal groove 203 lower end, and seal groove 203 fineness need reach more than 0.8, and when seal groove 203 inner seal ring one 3 malcompression, gas can by cross through hole 201 and these two passage turnover displacer internal cavities of the blind hole 202 perpendicular to it.
Described valve seat 4 of bleeding is arranged in tee T, and passage 403 connects vavuum pump; External screw thread 401 is connected with the internal thread of displacer end cap blind hole 101; Seal groove 402 top light cleanliness need reach more than 0.8; Endoporus 404 wall epimere fineness need reach more than 0.8.
A word projection 501 is together milled out, for embedding in the word groove of spool 2 top 1 bottom described valve rod 5 of bleeding; Bleed in the middle part of valve rod 5 and have a step projection 502, for fixed seal ring 37; Valve rod 5 step projection 502 of bleeding top cylindrical fineness need reach more than 0.8; Valve rod 5 top of bleeding mills out a square convex 503, in order to fixing valve stem handle 8.
Be processed with a square through hole 801 in the middle of described valve stem handle 8, coordinate with the square convex in valve rod 5 top (503) of bleeding and install.
The vacuum suction device of the hollow displacer of sterlin refrigerator provided by the invention, easy and simple to handle, can effectively ensure vacuum in displacer, heat is leaked in the heat conduction at the sterlin refrigerator displacer two ends that reduction regenerator and displacer split.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.1 be wherein displacer end cap, 2 be spool, 3 for sealing ring one, 4 be valve seat of bleeding, 5 be valve rod of bleeding, 6 for sealing ring two, 7 be sealing ring three, 8 valve stem handle, 9 is displacer housing.
Fig. 2 is the structural representation of displacer end cap 1.Wherein 101 is a tapped interior blind hole, and 102 is passage, and 103 is install the pair of planar bottom cylindrical spring face.Figure (a) is principal section figure, and figure (b) is the profile at 103 places.
Fig. 3 is the structural representation of spool 2.Wherein 201 is horizontal communication hole, and 202 is axial passage, and the two intersects ventilation, and 203 is seal groove.Figure (a) is profile, and figure (b) is top view.
Fig. 4 is the structural representation of valve seat 4 of bleeding.Wherein 401 is external screw thread, and 402 is seal groove, and 403 is passage.
Fig. 5 is the structural representation of valve rod 5 of bleeding.Wherein 501 is bottom one word projection, and 502 is valve rod central protrusion, and 503 is the square convex in top.Figure (a) is principal section figure, the profile that figure (b) is square convex 503 place, top, the profile that figure (c) is word projection 501 place, bottom one.
Fig. 6 is the structural representation of valve stem handle 8.Wherein 801 is square through hole.
Detailed description of the invention
Below with reference to the accompanying drawings and embodiment further describe the present invention.
As shown in Figure 1, the vacuum suction device of the hollow displacer of sterlin refrigerator of the present invention, comprises the displacer end cap 1 of improvement, displacer housing 9, spool 2, valve seat 4 of bleeding, valve rod 5 of bleeding, valve stem handle 8, and three place's sealing rings 3,6,7.In device, spool 2 and displacer end cap 1 are threaded connection, and open seal groove bottom spool, install sealing ring 1; Valve seat 4 of bleeding is threaded connection with displacer end cap 1, and valve seat 4 of bleeding is installed sealing ring 26 with displacer end cap 1 upper surface and sealed, and valve seat 4 lateral opening hole of bleeding connects vavuum pump; Valve rod 5 lower end of bleeding embeds spool 2 top flat recess in order to spinning in and out spool 2, the valve rod 5 and bleed between valve seat 4 and have sealing ring 37 to seal of bleeding, and valve stem top of bleeding coordinates with valve stem handle 8 to be installed; Valve seat lateral opening hole of bleeding connects vavuum pump.When vacuumizing, in displacer, air is drawn out of, after vacuumizing by passage in spool 2 201 and 202, tighten spool 2, press seal circle 1, realize vacuum seal in displacer, valve seat 4 of finally bleeding is separated with displacer end cap 1, and displacer forms a separate part.
During practical application, first sealing ring 1 is put into the seal groove of spool 2, spool 2 and sealing ring 1 are loaded in the screwed hole 101 of displacer end cap 1, does not need to tighten; Be inserted in convex from valve rod upper end of bleeding by sealing ring 37, then valve rod 5 of bleeding loads valve seat 4 of bleeding from bottom to top, the upper end of the valve rod 5 that makes to bleed exceedes valve seat 4 top-portion apertures 405 of bleeding; Then load in the screwed hole 101 of displacer end cap 1 by valve seat 4 of bleeding, press seal circle 26, valve seat 4 side passage 403 of bleeding connects vavuum pump; The square through hole 801 of valve stem handle 8 is coordinated installation with the square convex 503 in valve rod 5 top of bleeding, reaffirms that spool 2 is in non-tight condition by valve stem handle 8.Now, can operated vacuum pumps vacuumize, in displacer, air is drawn out of by passage in spool 2 201 and 202, after reaching certain vacuum degree, by rotary valve rod handle 8, the sealing ring 1 in spool 2 seal groove is compressed, complete displacer and vacuumize and keep vacuum, then valve rod 5 of bleeding is exited from the flat recess of spool 2, back-out is bled valve seat 4, and valve seat 4 of bleeding, bleed valve rod 5, valve stem handle 8 etc. are separated with displacer, complete the vacuum of whole displacer.
Claims (6)
1. the hollow displacer for sterlin refrigerator and vacuum suction device thereof, comprise the displacer end cap (1) of improvement, displacer housing (9), spool (2), valve seat of bleeding (4), valve rod of bleeding (5), valve stem handle (8), and three place's sealing rings (3,6,7); It is characterized in that:
Described spool (2) and displacer end cap (1) are threaded connection, and open seal groove bottom spool, install sealing ring one (3); Valve seat (4) of bleeding is threaded connection with displacer end cap (1), valve seat (4) of bleeding is installed sealing ring two (6) with displacer end cap (1) upper surface and is sealed, and valve seat of bleeding (4) lateral opening hole connects vavuum pump; Bleed in the flat recess of embedding spool (2) top, valve rod (5) one end, in order to spool of back-outing (2), bleeding between valve rod (5) and valve seat of bleeding (4) has sealing ring three (7) to seal, and valve rod of bleeding (5) top coordinates with valve stem handle (8) installs; When vacuumizing, in displacer, air is drawn out of by spool (2) interior cross through hole (201) and blind hole (202), after vacuumizing, tightens spool (2), press seal circle one (3), realizes vacuum seal in displacer.
2. a kind of hollow displacer for sterlin refrigerator according to claim 1 and vacuum suction device thereof, it is characterized in that: in described displacer end cap (1), have a tapped interior blind hole (101), there is bottom tapped blind hole a passage (102), this internal thread coordinates with the external screw thread of spool, blind hole (101) base plane need reach the fineness of more than 0.8 as sealing surface, displacer end cap installs milling pair of planar (103) bottom cylindrical spring face, fix when screwing as blind hole (101) internal thread and other parts, displacer end cap (1) and displacer housing (9) laser weld.
3. a kind of hollow displacer for sterlin refrigerator according to claim 1 and vacuum suction device thereof, is characterized in that: described spool (2) has a cross through hole (201) and a blind hole perpendicular to it (202); There is a seal groove (203) lower end, seal groove (203) face fineness need reach more than 0.8, when seal groove (203) inner seal ring one (3) malcompression, gas can pass through cross through hole (201) and these two passage turnover displacer internal cavities of the blind hole perpendicular to it (202).
4. a kind of hollow displacer for sterlin refrigerator according to claim 1 and vacuum suction device thereof, is characterized in that: described valve seat of bleeding (4) is arranged in tee T, and passage (403) connects vavuum pump; External screw thread (401) is connected with the internal thread of displacer end cap blind hole (101); Seal groove (402) top light cleanliness need reach more than 0.8; Endoporus (404) wall epimere fineness need reach more than 0.8.
5. a kind of hollow displacer for sterlin refrigerator according to claim 1 and vacuum suction device thereof, it is characterized in that: described valve rod of bleeding (5) bottom mills out a word projection (501) together, for embedding in spool (2) top (1) word groove; Bleed valve rod (5) middle part have a step projection (502), for fixed seal ring three (7); Valve rod (5) step projection (502) top cylindrical fineness of bleeding need reach more than 0.8; Valve rod (5) top of bleeding mills out a square convex (503), in order to fixing valve stem handle (8).
6. a kind of hollow displacer for sterlin refrigerator according to claim 1 and vacuum suction device thereof, it is characterized in that: be processed with a square through hole (801) in the middle of described valve stem handle (8), coordinate with the square convex in valve rod of bleeding (5) top (503) and install.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410748300.8A CN104534718A (en) | 2014-12-09 | 2014-12-09 | Hollow discharger for stirling cryocooler and vacuum air extraction device thereof |
| CN201520371923.8U CN204787386U (en) | 2014-12-09 | 2015-06-02 | A hollow ejector plate for stirling refrigerator and vacuum air exhaust device thereof |
| CN201510296025.5A CN104896783B (en) | 2014-12-09 | 2015-06-02 | Hollow discharger used for Stirling refrigerator and vacuum air extraction device of hollow discharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410748300.8A CN104534718A (en) | 2014-12-09 | 2014-12-09 | Hollow discharger for stirling cryocooler and vacuum air extraction device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104534718A true CN104534718A (en) | 2015-04-22 |
Family
ID=52850293
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410748300.8A Pending CN104534718A (en) | 2014-12-09 | 2014-12-09 | Hollow discharger for stirling cryocooler and vacuum air extraction device thereof |
| CN201520371923.8U Withdrawn - After Issue CN204787386U (en) | 2014-12-09 | 2015-06-02 | A hollow ejector plate for stirling refrigerator and vacuum air exhaust device thereof |
| CN201510296025.5A Active CN104896783B (en) | 2014-12-09 | 2015-06-02 | Hollow discharger used for Stirling refrigerator and vacuum air extraction device of hollow discharger |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520371923.8U Withdrawn - After Issue CN204787386U (en) | 2014-12-09 | 2015-06-02 | A hollow ejector plate for stirling refrigerator and vacuum air exhaust device thereof |
| CN201510296025.5A Active CN104896783B (en) | 2014-12-09 | 2015-06-02 | Hollow discharger used for Stirling refrigerator and vacuum air extraction device of hollow discharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN104534718A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351247A (en) * | 2020-04-04 | 2020-06-30 | 南京大学 | Vacuum system of linear split type Stirling refrigerating machine |
| CN111874547A (en) * | 2020-07-07 | 2020-11-03 | 江西省威尔国际矿业装备有限公司 | Polyurethane wear-resistant spiral chute |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534718A (en) * | 2014-12-09 | 2015-04-22 | 中国科学院上海技术物理研究所 | Hollow discharger for stirling cryocooler and vacuum air extraction device thereof |
| CN105627610B (en) * | 2016-03-15 | 2018-02-06 | 北京美尔斯通科技发展股份有限公司 | A kind of high-temperature superconductor refrigeration plant based on fixed nitrogen |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2201528Y (en) * | 1994-10-12 | 1995-06-21 | 王毅敏 | High vacuum angle valve |
| AT413234B (en) * | 2002-09-19 | 2005-12-15 | Hoerbiger Kompressortech Hold | PISTON COMPRESSOR AND METHOD FOR THE STAGE-FREE DELIVERY RATE CONTROL THEREOF |
| CN201680060U (en) * | 2010-03-10 | 2010-12-22 | 中国科学院等离子体物理研究所 | Separating type evacuation valve |
| CN203731734U (en) * | 2014-01-23 | 2014-07-23 | 中国电子科技集团公司第十六研究所 | Metal outer shell discharger for stirling cryocooler |
| CN104048436B (en) * | 2014-06-13 | 2016-03-09 | 中国电子科技集团公司第十六研究所 | A kind of linear integral-type Stirling refrigerator |
| CN104534718A (en) * | 2014-12-09 | 2015-04-22 | 中国科学院上海技术物理研究所 | Hollow discharger for stirling cryocooler and vacuum air extraction device thereof |
-
2014
- 2014-12-09 CN CN201410748300.8A patent/CN104534718A/en active Pending
-
2015
- 2015-06-02 CN CN201520371923.8U patent/CN204787386U/en not_active Withdrawn - After Issue
- 2015-06-02 CN CN201510296025.5A patent/CN104896783B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351247A (en) * | 2020-04-04 | 2020-06-30 | 南京大学 | Vacuum system of linear split type Stirling refrigerating machine |
| CN111874547A (en) * | 2020-07-07 | 2020-11-03 | 江西省威尔国际矿业装备有限公司 | Polyurethane wear-resistant spiral chute |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104896783B (en) | 2017-05-03 |
| CN204787386U (en) | 2015-11-18 |
| CN104896783A (en) | 2015-09-09 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150422 |