US20040052661A1 - Joint structure for refrigerant discharge tubes used in hermetic compressors - Google Patents

Joint structure for refrigerant discharge tubes used in hermetic compressors Download PDF

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Publication number
US20040052661A1
US20040052661A1 US10/368,996 US36899603A US2004052661A1 US 20040052661 A1 US20040052661 A1 US 20040052661A1 US 36899603 A US36899603 A US 36899603A US 2004052661 A1 US2004052661 A1 US 2004052661A1
Authority
US
United States
Prior art keywords
connecting member
connecting hole
refrigerant discharge
discharge tube
cylinder block
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
US10/368,996
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English (en)
Inventor
Seung-Don Seo
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Gwangju Electronics 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 Samsung Gwangju Electronics Co Ltd filed Critical Samsung Gwangju Electronics Co Ltd
Assigned to SAMSUNG GWANGJU ELECTRONICS CO., LTD. reassignment SAMSUNG GWANGJU ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SEO, SEUNG-DON
Publication of US20040052661A1 publication Critical patent/US20040052661A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections

Definitions

  • the present invention generally relates to a hermetic reciprocal compressor, and more particularly to a joint structure for a refrigerant discharge tube that serves as a passageway for compressed refrigerant.
  • a conventional hermetic reciprocal compressor includes an electronic device unit 20 and a compression device unit 30 in a casing 10 which is formed of an upper shell 11 and a lower shell 12 .
  • the compression device unit 30 is driven by the power transmitted from the electronic device unit 20 used to compress the refrigerant.
  • the electronic device unit 20 includes in the casing 10 a stator 21 which is fixed, a rotor rotatably disposed relative to the stator 21 and a rotary shaft 23 press-fit in the rotor 22 and having an eccentric portion 23 a formed at an end thereof.
  • the compression device unit 30 includes a cylinder block 31 having a compression chamber 31 a , a cylinder head 40 mounted on the cylinder block 31 and having a refrigerant suction chamber 41 and a discharge chamber 42 , a piston 50 disposed in the compression chamber 31 a of the cylinder block 31 disposed to be movable in a reciprocal fashion, a connecting rod 60 , with one end being connected to the piston 50 and the other end connected to the eccentric portion 23 a of the rotary shaft 23 , for converting and transmitting the rotary motion of the rotary shaft 23 into the linear reciprocal movement of the piston 50 , and a valve device 70 disposed between the cylinder block 31 and the cylinder head 40 for controlling the flow of the refrigerant.
  • the hermetic reciprocal compressor includes a suction muffler 80 at one side of the interior of the casing 10 for drawing in the refrigerant into the refrigerant suction chamber 41 , and a refrigerant discharge tube assembly 90 (FIG. 2) disposed adjacent a refrigerant path hole (not shown) formed in the cylinder block 31 to provide fluid communication with the refrigerant discharge chamber 42 of the cylinder head 40 .
  • the refrigerant discharge tube assembly 90 serves as a discharge passageway of the compressed refrigerant.
  • the refrigerant discharge tube assembly 90 includes a refrigerant discharge tube 91 and a discharge muffler 92 .
  • the discharge muffler 92 defines a predetermined space to reduce the noise produced from the pulsation of the refrigerant discharge, and is secured to the cylinder block 31 by a bolt 93 .
  • One end of the refrigerant discharge tube 91 is connected to the discharge muffler 92 , while the other end is connected to a discharge tube (not shown) provided in the casing 10 .
  • the refrigerant discharge tube assembly 90 as described above, the refrigerant discharge tube 91 and the discharge muffler 92 are joined with each other by copper-brazing, and the discharge muffler 92 is coupled with the cylinder block 31 using the bolt 93 .
  • the refrigerant discharge tube 91 and the discharge muffler 92 are joined [with] to each other by copper-brazing, and then the discharge muffler 92 is coupled to the cylinder block 31 by the bolt 93 . Accordingly, the number of assembly steps increases, causing the manufacturing efficiency to be reduced and manufacturing costs to increase.
  • the refrigerant discharge tube 91 and the discharge muffler 92 are joined with each other by copper-brazing, the refrigerant discharge tube 91 becomes deformed and phase-variation occurs in the structure in the brazing furnace. As a result, durability of the product deteriorates. Even after the brazing, the neck portion of the refrigerant discharge tube 91 is subject to stress during one or more bending processes, and thus, the refrigerant discharge tube 91 becomes less cylindrical, and stress concentration occurs. As a result, often times, the refrigerant discharge tube 91 is broken, and the refrigerant leaks out of the compressor.
  • a joint structure for a refrigerant discharge tube used in a hermetic reciprocal compressor according to the present invention in which the refrigerant discharge tube is directly connected to a cylinder block by press-caulking a connecting member connected with the refrigerant discharge tube into a connecting hole formed in the cylinder block.
  • the connecting member is formed to correspond to the shape of the connecting hole.
  • the connecting hole is formed in a multi-layer or stepped structure, which has at least two layers.
  • the connecting member is pre-assembled in the connecting hole by transition-fitting, and then is securely press-fit in the connecting hole by being expanded therein under the pressure of a caulking jig.
  • the connecting hole has a thread portion having a pitch in the range of 2 to 5 threads, and thus, the connecting member is more securely fit in the connecting hole because the connecting member is expanded by the pressure provided by the caulking jig.
  • the connecting member can be formed of a soft iron metal or a soft non-iron metal.
  • FIG. 1 is a cross-sectional view schematically showing the structure of a conventional hermetic reciprocal compressor
  • FIG. 2 is a perspective detail view showing a joint structure for a refrigerant discharge tube used in the compressor shown in FIG. 1;
  • FIG. 3 is a cross-sectional view showing the joint structure for a refrigerant discharge tube used in a hermetic reciprocal compressor according to the preferred embodiment of the present invention
  • FIG. 4 is a cross-sectional view showing the refrigerant discharge tube being connected to the cylinder block by the joint structure according to the present invention.
  • FIG. 5 is a perspective view showing the hermetic reciprocal compressor according to the present invention.
  • the joint structure for the refrigerant discharge tube of the hermetic reciprocal compressor includes a connecting hole 101 penetrated through a side of the cylinder block 100 , a refrigerant discharge tube 110 fit in the connecting hole 101 and a connecting member 120 for securing the refrigerant discharge tube 110 relative to the connecting hole 101 .
  • the connecting hole 101 is formed to be in fluid communication with a refrigerant path hole (not shown) formed inside of the cylinder block 100 .
  • the refrigerant path hole is in fluid communication with the refrigerant discharge chamber 42 of the cylinder head 40 (see FIG. 1).
  • the connecting hole 101 is formed having a multi-layer structure in which two or more layers are formed, and may be provided with a thread portion 101 a formed in an inner circumference of the hole 101 having a pitch in a range of from 2 to 5 threads.
  • the refrigerant discharge tube 110 is inserted in an insertion hole 120 a formed in the center of the connecting member 120 , and accordingly, the refrigerant discharge tube 110 is connected to the cylinder block 100 as the connecting member 120 is secured to the connecting hole 101 .
  • the connecting member 120 is also formed having a multi-layer structure corresponding to the shape of the connecting hole 101 , and is force-caulked in the connecting hole 101 by a pressing member, such as the caulking jig 130 shown in FIG. 3.
  • the connecting member 120 is formed of materials having rigidity, but that allow inward or outward expansion by the pressure of the caulking jig 130 .
  • Soft iron metal, or soft non-iron metal, can be used as the connecting member 120 .
  • the connecting member 120 is fit in the refrigerant discharge tube 110 , and pre-assembled in the connecting hole 101 of the cylinder block 100 by transition-fitting.
  • the connecting member 120 is pressed from the rear side by the caulking jig 130 , press-fitting the connecting member 120 into the connecting hole 101 .
  • the connecting member 120 expands inwardly and outwardly, coming into close contact with the refrigerant discharge tube 110 relative to the refrigerant discharge tube 110 inserted in the insertion hole 120 a of the connecting member 120 , with the connecting hole 101 and the connecting member 120 contacting each other very tightly. Due to the presence of the thread portion 101 a on the inner circumference of the connecting hole 101 , the connecting member 120 penetrates into the threaded portion 101 a during expansion, thereby being press-fit in the connecting hole 101 tightly.
  • FIG. 4 is a view showing the connecting member 120 being press-caulked in the connecting hole 101 .
  • the refrigerant discharge tube 110 is secured in the cylinder block 100 due to the expansion of connecting member 120 into the connecting hole 101 .
  • the connecting member 120 is secured in the connecting hole 101 by being expanded under the external pressure of the caulking jig 130 (FIG. 3), and is further tightly secured due to the connecting member 120 being partially and fixedly penetrated into the thread portion 101 a formed on the inner circumference of the connecting hole 101 . As a result, a strong binding force is acquired, and the connecting member 120 is not separated from the connecting hole 101 .
  • FIG. 5 shows the hermetic reciprocal compressor having the joint structure for a refrigerant discharge tube as described above. As shown in FIG. 5, the refrigerant discharge tube 110 is directly secured to the cylinder block 100 by the connecting member 120 .
  • the refrigerant discharge tube 110 is directly connected to the cylinder block 100 , the structure becomes simplified, while the number of assembly steps required for assembling the compressor is reduced. As a result, manufacturing efficiency improves and manufacturing costs are reduced.
  • connection member is secured by press-caulking, instead of brazing, durability is increased, and thus, breakage of the refrigerant discharge tube 110 can be prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
US10/368,996 2002-09-12 2003-02-19 Joint structure for refrigerant discharge tubes used in hermetic compressors Abandoned US20040052661A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2002-55322 2002-09-12
KR10-2002-0055322A KR100483569B1 (ko) 2002-09-12 2002-09-12 밀폐형 왕복동식 압축기의 냉매 토출관 연결구조

Publications (1)

Publication Number Publication Date
US20040052661A1 true US20040052661A1 (en) 2004-03-18

Family

ID=31987410

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/368,996 Abandoned US20040052661A1 (en) 2002-09-12 2003-02-19 Joint structure for refrigerant discharge tubes used in hermetic compressors

Country Status (6)

Country Link
US (1) US20040052661A1 (ja)
JP (1) JP2004100681A (ja)
KR (1) KR100483569B1 (ja)
CN (1) CN1482360A (ja)
BR (1) BR0300633A (ja)
IT (1) ITTO20030684A1 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110296946A1 (en) * 2010-06-07 2011-12-08 Denso Corporation Pedal Apparatus for Vehicle and Manufacturing Method Thereof
WO2014026262A1 (en) * 2012-08-17 2014-02-20 Whirlpool S.A. Gas discharge arrangement for a refrigeration compressor
US20140286803A1 (en) * 2005-07-22 2014-09-25 Fisher & Paykel Appliances Limited Refrigeration compressor with flexible discharge conduit
EP3258109A1 (en) 2016-06-14 2017-12-20 Whirlpool S.A. Improvement introduced in a system for connecting refrigerant fluid discharge tubes to cylinder caps of hermetic compressors, and corresponding process of performing thereof

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101159891B1 (ko) 2009-02-23 2012-06-25 한라공조주식회사 차량 배관용 조인트 플랜지 및 그 제조방법
KR100963565B1 (ko) * 2009-09-25 2010-06-15 삼진스틸산업(주) 스프링 이용한 제거식 그라운드 앵커체
KR101245174B1 (ko) * 2011-02-07 2013-03-19 주식회사 우신산업 볼트압입용 프레스기
KR20140032152A (ko) * 2012-09-06 2014-03-14 한라비스테온공조 주식회사 전동 압축기
CN105134602B (zh) * 2015-06-19 2018-07-27 广东美芝制冷设备有限公司 压缩机组件
SG10201802579WA (en) * 2018-03-28 2019-10-30 Panasonic Appliances Refrigeration Devices Singapore Hermetic compressor having discharge muffler
KR101927071B1 (ko) 2018-10-22 2018-12-11 한온시스템 주식회사 전동 압축기
TWI818826B (zh) * 2022-12-09 2023-10-11 東元電機股份有限公司 車用驅動器之水冷卻系統之剛性連接管安裝方法以及水管組裝治具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871800A (en) * 1974-03-11 1975-03-18 Gen Electric Hermetically sealed compressor suction tube assembly
US4240774A (en) * 1979-02-15 1980-12-23 General Electric Company Hermetically sealed compressor suction tube and method of assembly
US5101931A (en) * 1990-05-23 1992-04-07 Copeland Corporation Discharge muffler and method
US6176688B1 (en) * 1999-10-12 2001-01-23 Tecumseh Products Company Discharge muffler arrangement
US6588412B2 (en) * 2000-11-17 2003-07-08 William J. Ferrara Hopper adaptor for a paint ball gun

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56101489A (en) * 1980-01-14 1981-08-14 Tokyo Shibaura Electric Co Pipe connecting device of compressor
JPH0219669A (ja) * 1988-07-07 1990-01-23 Mitsubishi Electric Corp 往復式密閉形圧縮機
JPH02107775U (ja) * 1989-02-16 1990-08-28

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871800A (en) * 1974-03-11 1975-03-18 Gen Electric Hermetically sealed compressor suction tube assembly
US4240774A (en) * 1979-02-15 1980-12-23 General Electric Company Hermetically sealed compressor suction tube and method of assembly
US5101931A (en) * 1990-05-23 1992-04-07 Copeland Corporation Discharge muffler and method
US6176688B1 (en) * 1999-10-12 2001-01-23 Tecumseh Products Company Discharge muffler arrangement
US6588412B2 (en) * 2000-11-17 2003-07-08 William J. Ferrara Hopper adaptor for a paint ball gun

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140286803A1 (en) * 2005-07-22 2014-09-25 Fisher & Paykel Appliances Limited Refrigeration compressor with flexible discharge conduit
US20110296946A1 (en) * 2010-06-07 2011-12-08 Denso Corporation Pedal Apparatus for Vehicle and Manufacturing Method Thereof
US8627743B2 (en) * 2010-06-07 2014-01-14 Denso Corporation Pedal apparatus for vehicle and manufacturing method thereof
WO2014026262A1 (en) * 2012-08-17 2014-02-20 Whirlpool S.A. Gas discharge arrangement for a refrigeration compressor
EP3258109A1 (en) 2016-06-14 2017-12-20 Whirlpool S.A. Improvement introduced in a system for connecting refrigerant fluid discharge tubes to cylinder caps of hermetic compressors, and corresponding process of performing thereof
US10935018B2 (en) 2016-06-14 2021-03-02 Embraco—Indústria De Compressores E Soluçôes Em Refrigeraçâo Ltda. System for connecting refrigerant fluid discharge tubes to cylinder caps of hermetic compressors and process thereof
US11596997B2 (en) 2016-06-14 2023-03-07 Nidec Global Appliance Brasil Ltda. Introduced in a system for connecting refrigerant fluid discharge tubes to cylinder caps of hermetic compressors, and corresponding process of performing thereof

Also Published As

Publication number Publication date
BR0300633A (pt) 2004-09-08
JP2004100681A (ja) 2004-04-02
CN1482360A (zh) 2004-03-17
ITTO20030684A1 (it) 2004-03-13
KR20040023883A (ko) 2004-03-20
KR100483569B1 (ko) 2005-04-15

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SAMSUNG GWANGJU ELECTRONICS CO., LTD., KOREA, REPU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SEO, SEUNG-DON;REEL/FRAME:013793/0425

Effective date: 20030210

STCB Information on status: application discontinuation

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