US20080016904A1 - Refrigerating Unit Comprising An Ultrasound-Welded Suction Tube And A Throttling Tube - Google Patents

Refrigerating Unit Comprising An Ultrasound-Welded Suction Tube And A Throttling Tube Download PDF

Info

Publication number
US20080016904A1
US20080016904A1 US10/584,161 US58416104A US2008016904A1 US 20080016904 A1 US20080016904 A1 US 20080016904A1 US 58416104 A US58416104 A US 58416104A US 2008016904 A1 US2008016904 A1 US 2008016904A1
Authority
US
United States
Prior art keywords
tube
throttling
suction tube
location
suction
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
US10/584,161
Other languages
English (en)
Inventor
Jurgen Eberle
Thomas Kranz
Werner Schmid
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Assigned to BSH BOSCH UND SIEMENS HAUSGERATE GMBH reassignment BSH BOSCH UND SIEMENS HAUSGERATE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EBERLE, JUERGEN, KRANZ, THOMAS, SCHMID, WERNER
Publication of US20080016904A1 publication Critical patent/US20080016904A1/en
Abandoned legal-status Critical Current

Links

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
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/022—Evaporators with plate-like or laminated elements
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/052—Compression system with heat exchange between particular parts of the system between the capillary tube and another part of the refrigeration 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/054—Compression system with heat exchange between particular parts of the system between the suction tube of the compressor and another part of the 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size

Definitions

  • the present invention relates to a refrigerating unit comprising a throttling tube and a suction tube for refrigerant.
  • the throttling tube runs at least over a part of its length inside the suction tube and emerges from the suction tube to form an outlet location. Furthermore, the throttling tube and the suction tube are joined to one another at another second location of the suction tube at which outer surfaces of the throttling tube and the suction tube are in contact.
  • the invention further relates to a method for joining the throttling and suction tubes.
  • the throttling tube is usually guided inside the suction tube before entry into the evaporator and is passed further inside the suction tube as far as the evaporator. Pre-cooling of the liquefied refrigerant guided in the throttling tube is hereby achieved through heat exchange with the evaporator refrigerant which is sucked out in the suction tube.
  • the suction tube and the throttling tube are usually joined together in a liquid- and gastight manner by soldering at this first location of the suction tube at which the throttling tube is guided inside the suction tube.
  • the structure of the material from which the throttling tube is made is modified by the soldering so that the throttling tube would easily kink without further fixing.
  • the portion of the throttling tube located outside the suction tube before entry into the suction tube is usually guided parallel to the section tube over a certain length and is fixed to the suction tube with adhesive tape.
  • the adhesive tape is usually applied by hand.
  • the object is solved by a refrigerating unit according to claim 1 and a method for joining the suction and throttling tubes of a refrigerating unit according to claim 7 .
  • the dependent claims relate to preferred embodiments of the refrigerating unit.
  • a refrigerating unit comprising a throttling tube and a suction tube for refrigerant wherein the throttling tube is guided inside the suction tube at a first location of the suction tube and is joined thereto and wherein the throttling tube and the suction tube are joined to one another at another second location of the suction tube at which outer surfaces of the throttling tube and the suction tube are in contact.
  • the outer surfaces of the throttling tube and the suction tube are joined to one another at the second joining location by ultrasound welding.
  • the ultrasound welding usually takes place so that the outer surfaces of the suction and throttling tubes to be joined are brought into contact with one another and excited by high-frequency ultrasound.
  • the frequencies can lie in the range of about 20,000 to 60,000 Hertz.
  • the two surfaces of the suction and throttling tubes rub against one another and are heated so severely that their contact surfaces fuse together.
  • the ultrasound energy is usually supplied to the tubes to be joined by means of a so-called sonode.
  • the sonode amplifies the ultrasound produced by a composite piezo oscillator, for example.
  • a composite piezo oscillator is usually composed of a plurality of piezo-ceramic perforated disks which are clamped to one another by means of metal end pieces.
  • the welding of the suction and throttling tubes by means of ultrasound welding has the advantage that the heat required for the welding is released in a short time and exclusively localised on to the surfaces of the two tubes in contact with one another. Other regions of the tubes are at most heated by heat flow from the region of contact. They thus remain substantially cooler than is possible by soldering, for example. Consequently, the structure of the metal material forming the suction tube and the throttling tube, this usually being copper or a copper alloy, does not change decisively. The mechanical strength properties of the material are thus not modified. In addition, this is a very cost-effective joining technique.
  • the fixing of the throttling tube on the suction tube by means of ultrasound welding can be automated, which is not the case with fixing using adhesive strip. At the present time, this must still be applied by hand. The omission of the adhesive strip also brings about a saving of material.
  • the second location at which the outer surfaces of the throttling and suction tubes are joined together is preferably about 5 mm to 20 mm, especially about 5 mm to 15 mm, more especially about 10 mm from the first location at which the throttling tube enters inside the suction tube.
  • the throttling tube can be inserted in various ways inside the suction tube.
  • the suction tube can have a cut or an entrance hole for the throttling tube in its wall.
  • a connecting tube which has a connecting point for an end of a first part suction tube and a throttling tube on one side and is therefore expanded.
  • the second part suction tube and the throttling tube are inserted in the expansion.
  • Another possibility is to provide one of the part suction tubes with a cover at one of its ends which has an insertion hole for the second part suction tube and an entrance hole for the throttling tube. In the case of an expansion, the suction tube has a larger diameter at the first location than at the second location.
  • the liquefied refrigerant guided in the throttling tube towards the evaporator is pre-cooled by means of heat exchange with the evaporated refrigerant removed in the suction tube from the evaporator. Consequently, the second location at which a portion of the throttling tube located outside the suction tube is fixed to the suction tube by ultrasound welding, is preferably located downstream from the first location at which the throttling tube enters into the suction tube with reference to the refrigerant flowing in the suction tube.
  • the refrigerating unit according to the invention can, for example, be a refrigerator or freezer, for example, for domestic use.
  • the present invention also comprises a method for joining a suction tube of a refrigerating unit to a throttling tube.
  • the method comprises the following steps: guiding the throttling tube out from the inside of the suction at a first location which serves as an outlet location of the suction tube; joining the suction tube and the throttling tube at the first location, especially by soldering; bringing in contact an outer surface of a portion of the throttling tube located outside the suction tube with an outer surface of the suction tube at a second location of the suction tube; joining the suction tube and the throttling tube at the second location.
  • the outer surfaces of the suction tube and the throttling tube are joined to one another by ultrasound welding.
  • the throttling tube can first be inserted inside the suction tube, then the throttling tube can be fixed on the suction tube by means of ultrasound welding for subsequent protection from kinking and then the throttling tube and the suction tube can be joined to one another at the point of entry of the throttling tube into the suction tube, which is preferably carried out by soldering.
  • FIG. 1 is a sectional view showing a portion of the evaporator 1 with a throttling tube 1 which supplies a refrigerant and a suction tube 2 which removes the refrigerant and the joining of the two tubes before the evaporator 1 .
  • FIG. 1 shows a throttling tube 1 and a suction tube 2 of a refrigerating unit according to the invention.
  • the refrigerating unit itself is not shown since its structure is known to the person skilled in the art.
  • the refrigerating unit can be a refrigerator for example.
  • the throttling tube 1 guides liquefied refrigerant to an evaporator 3 of the refrigerating unit.
  • Said throttling tube 1 opens into a refrigerant tube 4 of the evaporator 3 , which extends in a meander fashion over the entire area of the evaporator 3 , as cannot be seen from the section shown.
  • the end of the refrigerant pipe 4 discharges into a connecting section 5 of the evaporator 3 in which the suction tube 2 is inserted and fixed.
  • the suction tube 2 guides the evaporated refrigerant away from the evaporator 3 .
  • the suction tube 2 and the throttle tube 1 are each thin-walled tubes having an inside diameter of a few millimetres in the case of the suction tube 2 and fractions of a millimetre in the case of the throttling tube 1 .
  • the throttling tube 1 Before the evaporator 3 the throttling tube 1 enters into the suction tube 2 at a first location A of the suction tube 2 and is guided as far as the evaporator 3 in the suction tube 2 until this ends in a connecting section 5 of the evaporator 3 .
  • the liquefied refrigerant guided in the throttling tube 1 is pre-cooled by heat exchange with the evaporated refrigerant in the suction tube 2 which has been removed by suction.
  • the suction tube 2 is formed from at least two part suction tubes 9 and 10 which are joined to one another in a liquid- and gastight manner by a connecting tube 11 .
  • the part suction tube 10 connected directly to the evaporator 3 is connected at one of its ends to the connecting tube 11 which has a first location A which is expanded and has an outlet point for the throttling tube.
  • the part suction tube 9 and the throttling tube 1 are inserted in the expansion.
  • the part suction tube 9 ends in the expansion.
  • the throttling tube 1 guided further in the part suction tube 10 as far as the evaporator 3 .
  • the part suction tube 9 and the throttling tube 1 are joined tightly to the part suction tube 10 by soldering at the expansion of the connecting tube 11 .
  • an embodiment is also feasible where the throttling tube 1 is guided into the suction tube 2 at the location A in the suction tube 2 through a cut or an entrance hole located in the wall of the suction tube 2 or the connecting tube 11 .
  • the suction tube 2 could then be embodied as one piece.
  • the throttling tube 1 and the suction tube 2 would also be joined together by soldering at the entrance point of the throttling tube 1 into the suction tube 2 .
  • the suction tube 2 and the throttling tube 1 usually consist of copper or a copper alloy. During soldering the structure of the copper material is changed, resulting in a deterioration in the strength properties of the copper material. Under mechanical stressing, the throttling tube 1 can thus easily kink at the soldered entrance point into the suction tube 2 .
  • the throttling tube 1 is fixed to the suction tube 2 at another second location B by means of ultrasound welding. At this point B, the throttling tube 1 is located outside the suction tube 2 .
  • the second location B of the suction tube 2 is located downstream from the first location A of the suction tube 2 with reference to the refrigerant guided in the suction tube 2 .
  • the first location A and the second location B are about 5 mm to 20 mm, preferably about 5 mm to 15 mm and especially preferably about 10 mm apart.
  • the throttling tube 1 and the suction tube 2 can be joined at the two locations A and B as follows: at the location A the throttling tube 1 is guided out from the inside of the suction tube 2 and joined to this by soldering. An outer surface of a portion of the throttling tube 1 located outside the suction tube 2 is then brought in contact with an outer surface of the suction tube 2 at the location B, i.e. the throttling tube 1 is placed against the suction tube 2 .
  • the outer surfaces of the throttling tube 1 and suction tube 2 are joined together by ultrasound welding. This is achieved by excitation with high-frequency ultrasound. The frequencies can lie in the range of about 20,000 to 60,000 Hertz.
  • the ultrasound energy is usually supplied by means of a so-called sonode.
  • the sonode amplifies the ultrasound produced by a composite piezo oscillator, for example.
  • a composite piezo oscillator can be composed of a plurality of piezo-ceramic perforated disks which are clamped to one another by means of metal end pieces.
  • the process steps described hereinbefore for joining the throttling tube 1 and the suction tube 2 at the locations A and B can take place in a sequence other than that described. For example, it is feasible to first guide the throttling tube 1 out from the suction tube 2 at location A, then fix the throttling tube 1 on the suction tube 2 at location B by ultrasound welding and only then solder together the throttling tube 1 and the suction tube 2 at location A.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US10/584,161 2003-12-13 2004-12-08 Refrigerating Unit Comprising An Ultrasound-Welded Suction Tube And A Throttling Tube Abandoned US20080016904A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE103-60-899.0 2003-12-13
DE10360899A DE10360899A1 (de) 2003-12-23 2003-12-23 Kältegerät mit ultraschallverschweißtem Saug- und Drosselrohr
PCT/EP2004/053358 WO2005064246A1 (de) 2003-12-23 2004-12-08 Kältegerät mit ultraschallverschweisstem saug- und drosselrohr

Publications (1)

Publication Number Publication Date
US20080016904A1 true US20080016904A1 (en) 2008-01-24

Family

ID=34683832

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/584,161 Abandoned US20080016904A1 (en) 2003-12-13 2004-12-08 Refrigerating Unit Comprising An Ultrasound-Welded Suction Tube And A Throttling Tube

Country Status (6)

Country Link
US (1) US20080016904A1 (ru)
EP (1) EP1702184A1 (ru)
CN (1) CN100412469C (ru)
DE (1) DE10360899A1 (ru)
RU (1) RU2375650C2 (ru)
WO (1) WO2005064246A1 (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130219951A1 (en) * 2012-02-24 2013-08-29 Samsung Electronics Co., Ltd. Refrigerator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2326002B1 (en) 2008-08-18 2015-07-29 Nippon Telegraph And Telephone Corporation Vector synthesis type phase shifter, optical transceiver, and control circuit
DE102010029581A1 (de) * 2010-06-01 2011-12-01 BSH Bosch und Siemens Hausgeräte GmbH Saug-Drosselrohr für ein Kältegerät
CN109737249A (zh) * 2019-03-05 2019-05-10 昆山一鼎工业科技有限公司 一种流体管路吸取装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147037A (en) * 1976-10-27 1979-04-03 General Electric Company High efficiency heat exchange for refrigeration suction line/capillary tube assembly
US5269158A (en) * 1991-06-22 1993-12-14 Krupp Vdm Gmbh Evaporator for a compressor-refrigerating apparatus
US20020184911A1 (en) * 2000-06-26 2002-12-12 Dobson Rodney L. Integrated U-tube and adsorbent unit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1516944A (fr) * 1967-01-20 1968-02-05 Siemens Elektrogeraete Gmbh Machine frigorifique à compresseur incorporée à un réfrigérateur à isolement par mousse plastique
IT1288846B1 (it) * 1996-02-07 1998-09-25 Cga Comp Gen Allumino Spa Assemblato per scambio calore e rispettivo processo ed impianto di produzione
DE19900701A1 (de) * 1999-01-11 2000-07-13 Vdm Evidal Gmbh Kapillar-Saugrohrsystem für Verdampfersysteme bzw. Kältekreislaufsysteme
DE10055915A1 (de) * 2000-11-10 2002-05-23 Bsh Bosch Siemens Hausgeraete Kältemittelkreislauf für eine Kältemaschine
DE10202496A1 (de) * 2002-01-23 2003-07-31 Bsh Bosch Siemens Hausgeraete Verfahren und Werkzeug zum Montieren einer Kapillarleitung in einer Verdampferplatine und damit hergestellte Verdampferplatine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147037A (en) * 1976-10-27 1979-04-03 General Electric Company High efficiency heat exchange for refrigeration suction line/capillary tube assembly
US5269158A (en) * 1991-06-22 1993-12-14 Krupp Vdm Gmbh Evaporator for a compressor-refrigerating apparatus
US20020184911A1 (en) * 2000-06-26 2002-12-12 Dobson Rodney L. Integrated U-tube and adsorbent unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130219951A1 (en) * 2012-02-24 2013-08-29 Samsung Electronics Co., Ltd. Refrigerator
US9709306B2 (en) * 2012-02-24 2017-07-18 Samsung Electronics Co., Ltd. Suction pipe and capillary tube arrangement for a refrigerator

Also Published As

Publication number Publication date
CN100412469C (zh) 2008-08-20
DE10360899A1 (de) 2005-07-21
CN1898508A (zh) 2007-01-17
WO2005064246A1 (de) 2005-07-14
RU2375650C2 (ru) 2009-12-10
EP1702184A1 (de) 2006-09-20
RU2006120460A (ru) 2008-01-27

Similar Documents

Publication Publication Date Title
SG189070A1 (en) Heat exchange device, evaporator, and refrigeration storage unit
JP2010525297A (ja) サクションパイプアセンブリ及びその製造方法
KR20110026844A (ko) 이종금속의 공정접합부 꺾임 방지 파이프 및 이의 제조방법
US20080016904A1 (en) Refrigerating Unit Comprising An Ultrasound-Welded Suction Tube And A Throttling Tube
KR20100038548A (ko) 석션파이프 어셈블리 및 그의 제조방법
WO2013144875A1 (en) Heat exchanger, household appliance comprising such heat exchanger and method for manufacturing such heat exchanger
KR20070039844A (ko) 이종 금속관 조립체 및 그 조립방법
WO2010032417A1 (ja) 冷媒加熱装置組立体、およびその取付構造
JP2002372316A (ja) 冷凍装置
US20230068291A1 (en) Heat exchanger
US2992546A (en) Inlet structure for refrigerant evaporator
KR102530057B1 (ko) 3열이 적용된 냉장고의 석션파이프 어셈블리
KR20030043574A (ko) 냉동기의 냉매파이프 연결구조 및 그 연결방법
KR101687587B1 (ko) 냉동사이클용 열교환기와 그 제조장치 및 제조방법
KR20180115887A (ko) 냉장고용 흡입측 열교환기 및 그 제조방법
KR20110045132A (ko) 석션 파이프와 모세관 파이프의 접합 구조
KR20220059362A (ko) 진공단열체
KR101973033B1 (ko) 배관 연결 장치
KR101314859B1 (ko) 열교환기의 제조방법
KR102608402B1 (ko) 차량 공조기용 배관의 연결구조 및 연결방법
JPH10510043A (ja) 圧縮機型細管冷却装置用のエバポレータ
KR20220059343A (ko) 진공단열체 및 진공단열체의 제조방법
JP5319639B2 (ja) 蒸発器及びこれを用いた冷却庫
EP1459021A1 (en) Refrigeration system with a plate-type condenser and method for compacting it
KR20070027905A (ko) 냉장고

Legal Events

Date Code Title Description
AS Assignment

Owner name: BSH BOSCH UND SIEMENS HAUSGERATE GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:EBERLE, JUERGEN;KRANZ, THOMAS;SCHMID, WERNER;REEL/FRAME:019061/0373

Effective date: 20060712

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE