US20120103992A1 - Plug member and low-temperature storage - Google Patents

Plug member and low-temperature storage Download PDF

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Publication number
US20120103992A1
US20120103992A1 US13/283,814 US201113283814A US2012103992A1 US 20120103992 A1 US20120103992 A1 US 20120103992A1 US 201113283814 A US201113283814 A US 201113283814A US 2012103992 A1 US2012103992 A1 US 2012103992A1
Authority
US
United States
Prior art keywords
heat
external thread
storage
plug member
insulating
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.)
Abandoned
Application number
US13/283,814
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English (en)
Inventor
Yoshihiro Takahashi
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.)
PHC Corp
Original Assignee
Sanyo Electric Co 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Assigned to SANYO ELECTRIC CO., LTD. reassignment SANYO ELECTRIC CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TAKAHASHI, YOSHIHIRO
Publication of US20120103992A1 publication Critical patent/US20120103992A1/en
Assigned to PANASONIC HEALTHCARE CO., LTD. reassignment PANASONIC HEALTHCARE CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SANYO ELECTRIC CO., LTD.
Abandoned legal-status Critical Current

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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/047—Pressure equalising devices
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/025—Secondary closures

Definitions

  • the present invention relates to a plug member and a low-temperature storage.
  • a low-temperature storage to be used for storage of frozen goods, etc., or cold preservation of biological tissues and specimens, etc.
  • air inside the storage is cooled, thereby occasionally bringing about a negative pressure state where atmospheric pressure inside the storage is lower than the atmospheric pressure outside the storage. Since the negative pressure state inside the storage makes it difficult to open a door of the low-temperature storage, the low-temperature storage is generally provided with a pressure adjusting device to resolve the negative pressure state inside the storage (e.g., Japanese Laid-Open Patent Publication No. 2010-25471).
  • a user removes a plug for closing a port for inflow of the air outside the low-temperature storage into the storage, thereby resolving the negative pressure state inside the storage.
  • the user occasionally drops the plug, when removing the plug for closing the port.
  • it occasionally becomes burdensome for the user to pick up the dropped plug and close the port with the plug again.
  • a plug member according to an aspect of the present invention which is to be used for a low-temperature storage including: a heat-insulating housing including an opening face; a heat-insulating door configured to open or close the opening face; a cooling device configured to cool an article stored inside the heat-insulating housing; and a through-hole passing through a heat-insulating wall included in the heat-insulating housing from an outer side of the storage to an inner side thereof and having an internal thread formed on an inner periphery thereof, and which is configured to open or close an opening portion of the through-hole on the outer side of the storage, includes: an external thread configured to be threadedly engaged with the internal thread; and a flange member configured to abut onto a face having the opening portion formed therein and close the opening portion, by threaded engagement between the external thread and the internal thread, the external thread having a cut formed in a portion of an outer periphery thereof, the cut configured to open a part of the opening portion in a state where the flange member does not a
  • FIG. 1 is a perspective view illustrating a low-temperature storage 10 according to one embodiment of the present invention
  • FIG. 2 is a perspective view illustrating a low-temperature storage 10 in a state where heat-insulating doors 21 and 22 are open;
  • FIG. 3 is a plan view illustrating a low-temperature storage 10 ;
  • FIG. 4 is a diagram illustrating an exploded pressure adjusting device 30 and a portion of a heat-insulating wall of a heat-insulating housing 20 ;
  • FIG. 5 is a diagram illustrating a state where members 60 and 61 are actually mounted onto a heat-insulating wall of a heat-insulating housing 20 ;
  • FIG. 6 is a perspective view illustrating a plug member 62 ;
  • FIG. 7 is a side view illustrating a plug member 62 ;
  • FIG. 8 is a cross-sectional illustrating a pressure adjusting device 30 in a state where a through-hole 80 is closed.
  • FIG. 9 is a cross-sectional view illustrating a pressure adjusting device 30 in a state where a through-hole 80 is open.
  • FIG. 1 is a perspective view illustrating the low-temperature storage 10 in a state where a heat-insulating door 21 is closed
  • FIG. 2 is a perspective view illustrating the low-temperature storage 10 in a state where heat-insulating doors 21 and 22 are open.
  • an X-axis direction is a side-to-side direction relative to the low-temperature storage 10
  • a Y-axis direction is an up-and-down direction relative to the low-temperature storage 10
  • a Z-axis direction is a fore-and-aft direction relative to the low-temperature storage 10 .
  • the low-temperature storage 10 is configured to store frozen goods, etc., or preserve biological tissues, etc., in an ultralow temperature range lower than or equal to ⁇ 85° C., for example, and includes a heat-insulating housing 20 including an opening face at the front thereof (+Z side).
  • the heat-insulating doors 21 and 22 configured to open or close the opening face at the front are provided on the opening face at the front of the heat-insulating housing 20 , and a cooling device 23 configured to cool an inside of the storage is provided on the lower side ( ⁇ Y side) of the heat-insulating housing 20 .
  • a pressure adjusting device 30 configured to resolve a negative pressure state inside the storage is provided on a side surface on the left-hand side ( ⁇ X side) of the heat-insulating housing 20 .
  • the heat-insulating door 21 is a so-called outer door and is provided with a control panel 31 that is configured to perform setting of the temperature inside the storage, and the like.
  • a handle 32 configured to open and close the heat-insulating door 21 is provided at the left edge of the heat-insulating door 21 .
  • a lock member 33 which is configured to fix the heat-insulating door 21 together with the handle 32 when the heat-insulating door 21 is closed, is provided on the side surface on the left-hand side of the heat-insulating housing 20 .
  • the heat-insulating door 22 which is configured to enhance the heat-insulating properties inside the storage, is provided inside the heat-insulating door 21 as an inner door.
  • FIG. 3 is a plan view illustrating the low-temperature storage 10 .
  • the heat-insulating housing 20 includes a metallic inner case 40 , a metallic outer case 41 provided such that the inner case 40 is covered, and a heat-insulating material 42 filled between the inner case 40 and the outer case 41 so as to enhance the heat-insulating properties, for example.
  • the inner case 40 and the outer case 41 have an opening face, at the front, so that the frozen goods, etc are taken out and put in.
  • the heat-insulating door 21 is a metallic door whose inside is filled with a heat-insulating material 45 .
  • Packing 46 which is configured to enhance airtightness inside the storage when the heat-insulating door 21 is closed, is provided at the inner periphery of the heat-insulating door 21 .
  • the low-temperature storage 10 becomes in a hermetically-sealed state when there is no air to enter and exit in the pressure adjusting device 30 while the heat-insulating doors 21 and 22 are closed.
  • FIG. 4 is a perspective view illustrating the exploded pressure adjusting device 30 and a portion of a heat-insulating wall of the heat-insulating housing 20 on which the pressure adjusting device 30 is mounted.
  • a through-hole 50 which passes through the heat-insulating wall from the outside of the storage to the inside thereof, is formed in the heat-insulating wall of the heat-insulating housing 20 on which the pressure adjusting device 30 is mounted.
  • the pressure adjusting device 30 is inserted into the through-hole 50 and includes members 60 and 61 configured to form a path for the air outside the storage to flow into the storage, and a plug member 62 configured to open or close the path for inflow of the air.
  • the member 60 is a flanged tubular member to be inserted into the through-hole 50 from the inside of the storage, and includes a cylindrical member 70 with an external thread formed on the outer periphery thereof and a flange member 71 that is integrally formed on one end of the cylindrical member 70 .
  • the member 61 is a flanged tubular member to be inserted into the through-hole 50 from the outside of the storage, and includes a cylindrical member 72 and a flange member 73 that is integrally formed on one end of the cylindrical member 72 .
  • On the inner periphery of the cylindrical member 72 such an internal thread is formed as to be threadedly engaged with the external thread formed on the cylindrical member 70 .
  • FIG. 5 is a diagram illustrating a state where the members 60 and 61 are actually mounted onto the heat-insulating wall of the heat-insulating housing 20 .
  • the flange member 71 abuts onto the wall surface of the inner case 40 from the inner side of the storage
  • the flange member 73 abuts onto the wall surface of the outer case 41 from the outer side of the storage.
  • the flange members 71 and 73 are joined to each other in such a manner as to press the heat-insulating wall of the heat-insulating housing 20 from both the inner side and the outer side of the storage.
  • a through-hole 80 which is configured to pass through between the inner side of the storage and the outer side thereof, is formed inside the cylindrical members 70 and 72 as the path for inflow of the air.
  • the plug member 62 is a member configured to open or close an opening portion 81 of the through-hole 80 on the outer side of the storage, and includes an external thread 75 , a knob 76 , and packing 77 as shown in FIG. 6 .
  • the knob 76 and the packing 77 correspond to a flange member.
  • FIG. 6 is a perspective view illustrating the plug member 62 and
  • FIG. 7 is a side view illustrating the plug member 62 .
  • the external thread 75 is a column thread configured to be threadedly engaged with the internal thread of the cylindrical member 72 .
  • a plurality of cuts 100 a to 100 d are formed along the direction of the threaded engagement of the external thread 75 .
  • a length of the cuts 100 a to 100 d is substantially equal to a length d of the external thread 75 shown in FIG. 7 . Therefore, the cuts 100 a to 100 d are formed over the entire length of the external thread 75 in the threaded engagement direction.
  • the external thread 75 is formed such that the cuts 100 a to 100 d , which are equal in shape, are provided at regular intervals in the outer periphery of the external thread 75 .
  • the knob 76 is formed at one end of the external thread 75 integrally therewith, and is in a columnar shape with a diameter greater than that of the external thread 75 , for example.
  • the packing 77 is pasted to a face of the knob 76 on the external thread 75 side, along the outer circumference of the external thread 75 .
  • FIG. 8 is a cross-sectional view illustrating the pressure adjusting device 30 in a state where the through-hole 80 is closed (cross-sectional view of the cross section along a line A-B of FIG. 3 , when viewed in the ⁇ Z direction).
  • the cut 100 a out of the cuts 100 a to 100 d in the external thread 75 is illustrated for easy understanding of cross-sectional structure of the pressure adjusting device 30 .
  • FIG. 9 is a cross-sectional view of the pressure adjusting device 30 in a state where the through-hole 80 is open.
  • FIG. 9 similarly to FIG. 8 , is a cross-sectional view of the cross section along the line A-B of FIG. 3 , when viewed in the ⁇ Z direction.
  • the low-temperature storage 10 Since the external thread 75 of the plug member 62 has the cuts 100 a to 100 d formed therein, the negative pressure state inside the storage is resolved without the plug member 62 being removed, in an embodiment of the present invention. As a result, the possibility is decreased that the plug member 62 is dropped when the negative pressure state is to be resolved, thereby being able to reduce the burden of the user. Furthermore, for example, in a case where the user has the low-temperature storage capable of resolving the negative pressure using the plug member without cuts, if only the plug member 62 with the cuts is newly provided, a similar effect to that in an embodiment of the present invention can be achieved without any special work, etc.
  • an external thread with the cuts provided in a cylindrical member can also be used.
  • the external thread with the cuts provided in a cylindrical member might have component strength, as the external thread, lowered since the inside of the cylindrical member is hollow.
  • the column member is used instead of the cylindrical member, thereby being able to enhance the component strength of the external thread 75 .
  • the cuts in the external thread 75 are formed only in a portion of the external thread 75 , the similar effect can be achieved to that in an embodiment of the present invention.
  • the cuts are each formed only in a part from a tip edge of the external thread 75 (the edge on the side opposite to that of the knob 76 )
  • the user may turn the knob 76 too much, in order to get communication between the inside and the outside of the storage, thereby removing the plug member 62 .
  • the cut 100 a is formed over the entire length of the external thread 75 in the direction of the threaded engagement. This enables the user to securely resolve the negative pressure state simply by turning the knob 76 slightly to loosen the external thread 75 .
  • the external thread 75 has four cuts 100 a to 100 d formed therein.
  • the negative pressure state can speedily be resolved as compared with a case of the external thread having only one cut, for example.
  • the through-hole configured to communicate between the inside and the outside of the storage can be formed in the heat-insulating door 21 at the front of the low-temperature storage 10 .
  • the heat-insulating door of a common low-temperature storage is of a dual structure (structure including the inner and outer doors) similarly to that in an embodiment of the present invention. This makes the structure of the low-temperature storage complicated when the through-hole is formed at the front.
  • the through-hole 80 is formed in the heat-insulating wall on a side surface of the heat-insulating housing 20 , thereby being able to make the structure of the low-temperature storage 10 a simple structure with the convenience for the user being secured.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Refrigerator Housings (AREA)
US13/283,814 2010-10-28 2011-10-28 Plug member and low-temperature storage Abandoned US20120103992A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010242447A JP5671675B2 (ja) 2010-10-28 2010-10-28 栓部材、低温貯蔵庫
JP2010-242447 2010-10-28

Publications (1)

Publication Number Publication Date
US20120103992A1 true US20120103992A1 (en) 2012-05-03

Family

ID=44862739

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/283,814 Abandoned US20120103992A1 (en) 2010-10-28 2011-10-28 Plug member and low-temperature storage

Country Status (5)

Country Link
US (1) US20120103992A1 (ko)
EP (1) EP2447635B1 (ko)
JP (1) JP5671675B2 (ko)
KR (1) KR101396719B1 (ko)
CN (1) CN102466384B (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150013352A1 (en) * 2013-07-09 2015-01-15 Eppendorf Ag Unified Freezer Chamber Venting with Door Handle
US10627155B2 (en) 2016-03-11 2020-04-21 Phc Holdings Corporation Ultra-low temperature freezer
US20220307754A1 (en) * 2019-12-18 2022-09-29 Phc Holdings Corporation Refrigeration apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103697649B (zh) * 2013-12-24 2016-03-09 海信容声(广东)冰箱有限公司 一种变温室具有氮气保鲜功能的冰箱
KR101598443B1 (ko) 2015-02-13 2016-03-14 김만현 자동차용 시트 커버와 그 제조 방법 및 장치
CN110715499B (zh) * 2018-07-11 2020-08-28 海尔智家股份有限公司 冰箱
CN117469894B (zh) * 2023-12-26 2024-03-08 珠海格力电器股份有限公司 气压平衡装置、低温保存箱及其控制方法

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US3983894A (en) * 1972-05-18 1976-10-05 Avm Corporation Fluid valves
US4685584A (en) * 1986-09-29 1987-08-11 Stant Inc. Vented fuel cap with bump and grade seal
US4787529A (en) * 1987-06-16 1988-11-29 Stant Inc. Vapor-liquid control fuel cap
US4986502A (en) * 1989-12-04 1991-01-22 Ceroke Clarence J Safety drain plug
US5183173A (en) * 1991-07-29 1993-02-02 Epicor Industries, Inc. Auto venting fuel cap
US5368181A (en) * 1993-03-12 1994-11-29 Myers; Alan Captured drain plug or vent
JPH08277938A (ja) * 1995-04-06 1996-10-22 Daihatsu Motor Co Ltd オイルフィラーキャップのシール構造
US6095363A (en) * 1994-05-06 2000-08-01 Stant Manufacturing Inc. Quick-on fuel cap
US6585128B2 (en) * 2001-04-30 2003-07-01 Deere & Company Oil breather splash guard structure
US20050205607A1 (en) * 2004-03-22 2005-09-22 Valentin Hierzer Child-resistant flip-top closure
US7104415B2 (en) * 2000-03-31 2006-09-12 Heinrich Reutter Sealing cap
US7191809B2 (en) * 2003-10-31 2007-03-20 Surpass Industry Co. Ltd. Connector for dispensing liquid from a tank
JP2010025471A (ja) * 2008-07-22 2010-02-04 Sanyo Electric Co Ltd 低温貯蔵庫の庫内圧調整装置

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JP2604293B2 (ja) * 1991-11-20 1997-04-30 三洋電機株式会社 低温庫
CN2253705Y (zh) * 1996-02-01 1997-05-07 李建民 轮胎充气快速连接器
GB9625050D0 (en) * 1996-12-02 1997-01-22 Starpoint Electrics Ltd Fastening assemblies
SI9600364A (sl) * 1996-12-11 1998-06-30 Gorenje Gospodinjski Aparati D.D. Priprava za izenačevanje tlaka, zlasti pri zamrzovalnih napravah
JP2000039250A (ja) * 1998-07-17 2000-02-08 Sanyo Electric Co Ltd 冷却貯蔵庫
IT1305711B1 (it) * 1998-12-22 2001-05-15 Merloni Elettrodomestici Spa Valvola per il bilanciamento della pressione all'interno di cellefrigorifere dotata di mezzi per la protezione dalle basse temperature
CN2574929Y (zh) * 2002-09-28 2003-09-24 宏竹实业股份有限公司 气嘴阀结构
JP2005233532A (ja) * 2004-02-20 2005-09-02 Yasutaka Nakada 業務用冷蔵・冷凍庫、貯蔵用コンテナおよび冷凍倉庫
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Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983894A (en) * 1972-05-18 1976-10-05 Avm Corporation Fluid valves
US3980211A (en) * 1972-09-11 1976-09-14 The West Company Pouring adaptor-closure assembly
US4685584A (en) * 1986-09-29 1987-08-11 Stant Inc. Vented fuel cap with bump and grade seal
US4787529A (en) * 1987-06-16 1988-11-29 Stant Inc. Vapor-liquid control fuel cap
US4986502A (en) * 1989-12-04 1991-01-22 Ceroke Clarence J Safety drain plug
US5183173A (en) * 1991-07-29 1993-02-02 Epicor Industries, Inc. Auto venting fuel cap
US5368181A (en) * 1993-03-12 1994-11-29 Myers; Alan Captured drain plug or vent
US6095363A (en) * 1994-05-06 2000-08-01 Stant Manufacturing Inc. Quick-on fuel cap
JPH08277938A (ja) * 1995-04-06 1996-10-22 Daihatsu Motor Co Ltd オイルフィラーキャップのシール構造
US7104415B2 (en) * 2000-03-31 2006-09-12 Heinrich Reutter Sealing cap
US6585128B2 (en) * 2001-04-30 2003-07-01 Deere & Company Oil breather splash guard structure
US7191809B2 (en) * 2003-10-31 2007-03-20 Surpass Industry Co. Ltd. Connector for dispensing liquid from a tank
US20050205607A1 (en) * 2004-03-22 2005-09-22 Valentin Hierzer Child-resistant flip-top closure
JP2010025471A (ja) * 2008-07-22 2010-02-04 Sanyo Electric Co Ltd 低温貯蔵庫の庫内圧調整装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150013352A1 (en) * 2013-07-09 2015-01-15 Eppendorf Ag Unified Freezer Chamber Venting with Door Handle
US9322589B2 (en) * 2013-07-09 2016-04-26 Eppendorf Ag Unified freezer chamber venting with door handle
US10627155B2 (en) 2016-03-11 2020-04-21 Phc Holdings Corporation Ultra-low temperature freezer
US20220307754A1 (en) * 2019-12-18 2022-09-29 Phc Holdings Corporation Refrigeration apparatus

Also Published As

Publication number Publication date
KR20120044887A (ko) 2012-05-08
JP2012093055A (ja) 2012-05-17
EP2447635A2 (en) 2012-05-02
EP2447635B1 (en) 2020-06-17
CN102466384B (zh) 2014-09-17
JP5671675B2 (ja) 2015-02-18
KR101396719B1 (ko) 2014-05-19
EP2447635A3 (en) 2018-05-30
CN102466384A (zh) 2012-05-23

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AS Assignment

Owner name: SANYO ELECTRIC CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TAKAHASHI, YOSHIHIRO;REEL/FRAME:027409/0740

Effective date: 20111109

AS Assignment

Owner name: PANASONIC HEALTHCARE CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SANYO ELECTRIC CO., LTD.;REEL/FRAME:028199/0276

Effective date: 20120507

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION