JPS6449859A - Cryogenic refrigerator - Google Patents

Cryogenic refrigerator

Info

Publication number
JPS6449859A
JPS6449859A JP20760987A JP20760987A JPS6449859A JP S6449859 A JPS6449859 A JP S6449859A JP 20760987 A JP20760987 A JP 20760987A JP 20760987 A JP20760987 A JP 20760987A JP S6449859 A JPS6449859 A JP S6449859A
Authority
JP
Japan
Prior art keywords
displacer
limiting mechanism
cylinder
forward end
stroke limiting
Prior art date
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.)
Pending
Application number
JP20760987A
Other languages
Japanese (ja)
Inventor
Yukihiro Hamada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP20760987A priority Critical patent/JPS6449859A/en
Publication of JPS6449859A publication Critical patent/JPS6449859A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

PURPOSE: To suppress abnormal vibration of an expansion mechanism by providing a displacer stroke limiting mechanism for preventing the forward end at the cryogenic part of the displacer from abutting against the forward end of a cylinder and providing the displacer stroke limiting mechanism with a buffer member. CONSTITUTION: A displacer stroke limiting mechanism 51 for limiting downward stroke of a displacer 26 at the time of vertical movement of a slack piston 25 and the displacer 26 incident to switching of pressure is disposed in a recess 44 in the lower surface of a valve stem 18 above a cylinder 12, i.e., on the high temperature side. Since the forward end of the displacer 26 is prevented from abutting against the wall face at the forward end of the cylinder 12 and the displacer stroke limiting mechanism 51 is disposed on the high temperature side, impact is suppressed effectively by a butter member 50 provided for the stroke limiting mechanism 51 when the displacer 26 reaches the lower end position. Consequently, vibration of the cylinder 12 due to impact shaking force is suppressed and the vibration of an expansion machine 8 can be reduced effectively.
JP20760987A 1987-08-21 1987-08-21 Cryogenic refrigerator Pending JPS6449859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20760987A JPS6449859A (en) 1987-08-21 1987-08-21 Cryogenic refrigerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20760987A JPS6449859A (en) 1987-08-21 1987-08-21 Cryogenic refrigerator

Publications (1)

Publication Number Publication Date
JPS6449859A true JPS6449859A (en) 1989-02-27

Family

ID=16542616

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20760987A Pending JPS6449859A (en) 1987-08-21 1987-08-21 Cryogenic refrigerator

Country Status (1)

Country Link
JP (1) JPS6449859A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180011737A (en) * 2016-07-25 2018-02-02 스미토모 크라이어제닉스 오브 아메리카 인코포레이티드 Cryogenic expander with collar bumper for reduced noise and vibration characteristics

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180011737A (en) * 2016-07-25 2018-02-02 스미토모 크라이어제닉스 오브 아메리카 인코포레이티드 Cryogenic expander with collar bumper for reduced noise and vibration characteristics
JP2018036042A (en) * 2016-07-25 2018-03-08 スミトモ （エスエイチアイ） クライオジェニックス オブ アメリカ インコーポレイテッドＳｕｍｉｔｏｍｏ（ＳＨＩ）Ｃｒｙｏｇｅｎｉｃｓ ｏｆ Ａｍｅｒｉｃａ，Ｉｎｃ． Cryogenic expander with collar bumper for reduced noise and vibration

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