EP0257111A1 - Echangeur pour le circuit de refroidissement des moteurs à combustion - Google Patents

Echangeur pour le circuit de refroidissement des moteurs à combustion Download PDF

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Publication number
EP0257111A1
EP0257111A1 EP86111269A EP86111269A EP0257111A1 EP 0257111 A1 EP0257111 A1 EP 0257111A1 EP 86111269 A EP86111269 A EP 86111269A EP 86111269 A EP86111269 A EP 86111269A EP 0257111 A1 EP0257111 A1 EP 0257111A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
air suction
suction line
exchanger according
line
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.)
Withdrawn
Application number
EP86111269A
Other languages
German (de)
English (en)
Inventor
Joachim Schulz
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.)
Aurora Konrad G Schulz GmbH and Co KG
Original Assignee
Aurora Konrad G Schulz GmbH and Co KG
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 Aurora Konrad G Schulz GmbH and Co KG filed Critical Aurora Konrad G Schulz GmbH and Co KG
Priority to EP86111269A priority Critical patent/EP0257111A1/fr
Priority to US07/085,531 priority patent/US4781247A/en
Publication of EP0257111A1 publication Critical patent/EP0257111A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/917—Pressurization and/or degassification

Definitions

  • the invention relates to a heat exchanger according to the preamble of claim 1.
  • the object of the invention is to create a heat exchanger which provides improved, in particular more uniform, heat dissipation ensures.
  • the design effort is considerably reduced.
  • the upper entry opening of the air suction line is expediently widened.
  • the widening can be conical, and the free edge of the inlet opening is advantageously spherical in order to encourage gas or air bubbles to slide into the air suction line without resistance.
  • the air suction line is led into the return line, in which the coolant is pumped back into the engine by the cooling water pump, the flow velocity is relatively high in the area of the lower mouth of the air suction line. This creates a strong negative pressure within the air suction line, which accelerates the flow within the suction line and in particular also affects the inlet opening for the gas or air bubbles. In this way it is achieved that gas or air accumulations are safely extracted from the upper water tank through a comparatively thin suction line.
  • a conventional heat exchanger tube can be used for the air suction line, which is extended from the outset beyond the bottoms or to which extensions are soldered.
  • the expansion can be carried out by an easy-to-manage expansion using any conical tool.
  • the construction according to the invention has the further advantage that a special ventilation tube can be omitted. In addition to a reduction in material and labor costs, this offers the possibility of saving weight and also avoids the additional sealing and space problems that occur with external ventilation tubes.
  • the radiator 10 shown in FIG. 1 has an upper water tank 12 with an air separation area and a lower one Water box 14, between which a heat exchanger register 16 extends.
  • the register 16 consists of heat exchanger tubes 18 and fins 20 which are in good thermal contact with the tubes 18. Warm cooling water passes from the engine through the inlet connector 26 into the radiator 10 and the tubes 18, from there into the lower water tank 14 and is transferred via a return line 28 discharged.
  • the tubes 18 are fastened in suitable floors 30 and 32 by means of brazing.
  • An air suction line 34 is also mounted in the floors 30 and 32 and corresponds in its cross section in the area of the register 16 completely to the tubes 18. The air suction line 34 is extended up to far into the upper water tank 12.
  • An upper inlet opening 36 of the air suction line 34 for gas or air bubbles ends at a water level 38, which is established during normal operation of the radiator 10.
  • the inlet opening 36 of the air suction line 34 is flared, so that its cross section is larger than the cross section of the air suction line 34 in the region of the register 16.
  • the air suction line 34 is also extended downward beyond the bottom 32. Its lower mouth 40 is located in a connecting piece of the return line 28, which is aligned with the air suction line 34.
  • the lower mouth 40 of the air suction line 34 is also flared. It is advantageously located in the middle of the connecting piece of the return line 28, so that a uniform flow can take place.
  • the extensions 33 and 35 of the air suction line 36 can also be formed by pipe sections soldered to them.
  • An area of accelerated flow in the return line 28 is used with the air suction device in order to pump the air out of the radiator and to separate it at a suitable point.
  • the accelerated flow initially results due to the narrowing due to the air suction line 34 inserted into the return line, but on the other hand it is also increased by the conical widening of the lower mouth 40 of the air suction line.
  • the high flow velocity at the sharp edge of the mouth 40 creates a strong negative pressure. This acts on the entire air suction line 34 and causes the flow in the air suction line 34 to be considerably greater than the flow in the tubes 18. Nevertheless, the water flowing in the air suction line 34 is also passed through the heat exchanger, so that cooling also occurs here and the efficiency of the radiator is not reduced. Due to the strong negative pressure, air bubbles, air and / or water are sucked in at the upper inlet opening 36 of the air suction line 34, air or air bubbles preferably being sucked off, since these tend to collect in the upper water tank 12.
  • the lower part of the air extraction line 34 is shown.
  • the air suction line 34 as well as the heat exchanger tubes 18 have an oval cross section with a length / width ratio of 1: 5 to 10. This is advantageous for the improved effect and not disadvantageous for the air suction line 34.
  • Due to the conical widening of the lower mouth 40 of the air suction line 34 the lower mouth 40 of the air suction line 34 appears narrower in the view shown in FIG. 2; in fact, however, it is essentially circular in cross section and has a larger cross section than the air suction line 34 in the region of the register 16.
  • a radiator with three tubes 18 arranged one behind the other is shown. Instead of the middle tube, the air suction line 34 is provided, which is located exactly above the return port 28.
  • a hose 46 which is fastened to the connection piece by means of a clamp 48, is plugged onto the connection piece as a return line 28 is.
  • Fig. 3 the connector of the return line 28 with the lower mouth 40 of the air suction line 34 located therein is shown on an enlarged scale.
  • the water flows generated during operation are indicated by arrows 50.
  • the effective cross section of the return line 28 is smaller than in the other areas.
  • there is a region of higher negative pressure here which, using the water jet pump principle known per se, sucks gas or air bubbles out of the radiator through the suction line 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP86111269A 1986-08-14 1986-08-14 Echangeur pour le circuit de refroidissement des moteurs à combustion Withdrawn EP0257111A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP86111269A EP0257111A1 (fr) 1986-08-14 1986-08-14 Echangeur pour le circuit de refroidissement des moteurs à combustion
US07/085,531 US4781247A (en) 1986-08-14 1987-08-14 Heat exchanger for the coolant circuit of internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86111269A EP0257111A1 (fr) 1986-08-14 1986-08-14 Echangeur pour le circuit de refroidissement des moteurs à combustion

Publications (1)

Publication Number Publication Date
EP0257111A1 true EP0257111A1 (fr) 1988-03-02

Family

ID=8195344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111269A Withdrawn EP0257111A1 (fr) 1986-08-14 1986-08-14 Echangeur pour le circuit de refroidissement des moteurs à combustion

Country Status (2)

Country Link
US (1) US4781247A (fr)
EP (1) EP0257111A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9113180U1 (de) * 1991-10-23 1992-01-09 Behr GmbH & Co, 7000 Stuttgart Wärmetauscher
DE102007002453A1 (de) * 2007-01-11 2008-07-17 Bombardier Transportation Gmbh Entlüftung für einen Flüssigkeitskreislauf
DE102014012179A1 (de) 2014-08-16 2016-02-18 Modine Manufacturing Company Indirekter Luftkühler

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4892140A (en) * 1988-11-21 1990-01-09 Honovich Tito D Condenser vent siphon line
DE3924550A1 (de) * 1989-07-25 1991-01-31 Daimler Benz Ag Waermetauscher, insbesondere heizwaermetauscher im motorkuehlkreislauf eines kraftfahrzeuges
GB2303438A (en) * 1995-07-19 1997-02-19 Llanelli Radiators Ltd Vehicle heat exchanger vent arrangement
US5810074A (en) * 1996-09-13 1998-09-22 American Standard Inc. Serial heat exchanger and cascade circuitry
US6019171A (en) * 1998-11-18 2000-02-01 General Motors Corporation Down flow, two pass radiator with automatic air venting means
US6250377B1 (en) * 1999-12-27 2001-06-26 Detroit Diesel Corporation Engine radiator having an air control hood
AU2003246165A1 (en) * 2003-06-30 2005-01-21 Advantest Corporation Cover for cooling heat generating element, heat generating element mounter and test head
US20130327511A1 (en) 2012-06-06 2013-12-12 Tesla Motors, Inc. Passive air bleed for improved cooling systems

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1644270A (en) * 1925-11-09 1927-10-04 Paone Vincenzo Radiator
FR1286713A (fr) * 1961-01-14 1962-03-09 Const Mecaniques Et Aeronautiq Perfectionnement aux radiateurs de chauffage pour véhicules automobiles
US3533465A (en) * 1968-09-03 1970-10-13 Caterpillar Tractor Co Crossflow radiator system
GB2000856A (en) * 1977-06-22 1979-01-17 Chausson Usines Sa Pressurising header tank for a heat exchanger circuit
EP0075750A2 (fr) * 1981-09-30 1983-04-06 Nissan Motor Co., Ltd. Radiateur
FR2514479A1 (fr) * 1981-10-13 1983-04-15 Valeo Echangeur de chaleur a circulation de liquide, en particulier pour un vehicule automobile

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA684969A (en) * 1964-04-21 Edmon Achille Heating radiators for motor vehicles
CA598044A (en) * 1960-05-17 Canadian Westinghouse Company Limited Heat exchangers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1644270A (en) * 1925-11-09 1927-10-04 Paone Vincenzo Radiator
FR1286713A (fr) * 1961-01-14 1962-03-09 Const Mecaniques Et Aeronautiq Perfectionnement aux radiateurs de chauffage pour véhicules automobiles
US3533465A (en) * 1968-09-03 1970-10-13 Caterpillar Tractor Co Crossflow radiator system
GB2000856A (en) * 1977-06-22 1979-01-17 Chausson Usines Sa Pressurising header tank for a heat exchanger circuit
EP0075750A2 (fr) * 1981-09-30 1983-04-06 Nissan Motor Co., Ltd. Radiateur
FR2514479A1 (fr) * 1981-10-13 1983-04-15 Valeo Echangeur de chaleur a circulation de liquide, en particulier pour un vehicule automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9113180U1 (de) * 1991-10-23 1992-01-09 Behr GmbH & Co, 7000 Stuttgart Wärmetauscher
DE102007002453A1 (de) * 2007-01-11 2008-07-17 Bombardier Transportation Gmbh Entlüftung für einen Flüssigkeitskreislauf
DE102014012179A1 (de) 2014-08-16 2016-02-18 Modine Manufacturing Company Indirekter Luftkühler

Also Published As

Publication number Publication date
US4781247A (en) 1988-11-01

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Inventor name: SCHULZ, JOACHIM