EP3139015B1 - Thermostatgehäuse - Google Patents

Thermostatgehäuse Download PDF

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Publication number
EP3139015B1
EP3139015B1 EP16186682.7A EP16186682A EP3139015B1 EP 3139015 B1 EP3139015 B1 EP 3139015B1 EP 16186682 A EP16186682 A EP 16186682A EP 3139015 B1 EP3139015 B1 EP 3139015B1
Authority
EP
European Patent Office
Prior art keywords
water
housing
temperature sensor
water outlet
sensor
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.)
Active
Application number
EP16186682.7A
Other languages
English (en)
French (fr)
Other versions
EP3139015A1 (de
Inventor
Olivier Debrois
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.)
Renault SAS
Original Assignee
Renault SAS
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Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP3139015A1 publication Critical patent/EP3139015A1/de
Application granted granted Critical
Publication of EP3139015B1 publication Critical patent/EP3139015B1/de
Active legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/32—Engine outcoming fluid temperature

Definitions

  • the present invention generally relates to the cooling circuit of an internal combustion engine and relates more particularly to the water outlet housings.
  • the invention refers, more specifically, to the water outlet boxes made of plastic material.
  • a motor vehicle is equipped with a cooling circuit for regulating the temperature of the internal combustion engine with which it is equipped, and to ensure its proper operation.
  • the lowering of its temperature is done by the passage of a coolant, whose circulation is generated by a pump.
  • the liquid is conventionally called water, but mostly corresponds to a coolant.
  • the cooling circuit is generally provided with a water outlet housing, in the form of an enclosure, and having a thermostat and a temperature sensor.
  • the housing also includes an inlet adapted to receive water from the engine, as well as two outlets for the redirection of this water to a radiator and a heater.
  • the high temperature of the water from the motor causes the movement of a portion of the thermostat, which retracts, causing the opening to the radiator outlet.
  • the latter associated with a fan, cools the water that passes through it, before it is redirected towards the engine.
  • the water circulates through the heater, intended to ensure the heating of the passenger compartment, and this permanently, that the output to the radiator is open or closed.
  • the temperature sensor located at the water outlet housing, plays a major role in maintaining the optimum temperature at all operating speeds of the engine, in particular by operating the electric motor of the engine. fan associated with the radiator.
  • the senor is associated with the cooling circuit by mounting on the water outlet housing.
  • An O-ring is inserted between the housing and the sensor to prevent leakage, and a clip is added to more effectively maintain both elements.
  • the document FR2774423 A1 discloses a water box according to the preamble of claim 1.
  • the purpose of the invention is therefore to remedy these drawbacks and to propose a water outlet box whose risks of leakage are avoided and the problems encountered during a maintenance intervention on it, as previously described, discarded. .
  • a water outlet housing according to the invention is defined in claim 1.
  • the welding is performed by mirror welding.
  • the welding corresponds to vibration welding.
  • the temperature sensor is located so as to be in direct and continuous contact with the water.
  • the temperature sensor may extend along the axis of the water inlet coming from the engine.
  • the invention also relates to a motor vehicle provided with a cooling circuit comprising a water outlet housing according to claim 1.
  • a water outlet housing As illustrated in Figures 1 to 3 , a water outlet housing according to the invention is designated by the general numerical reference 1.
  • a housing 1 made of plastic material, is intended to equip the cooling circuit, not shown, of a motor vehicle provided with an internal combustion engine.
  • the housing 1 comprises a hollow chamber 2 having three outlets 3, 4 and 5 for the redirection of water.
  • each output corresponds to a cylindrical conduit connected to the enclosure 2.
  • the free ends 19, 20 and 21 of the three conduits 3, 4 and 5 are respectively intended to be connected to a radiator, a heater and a heater. branch circuit, which is provided the cooling circuit.
  • the duct 3 may extend in the extension of the chamber 2.
  • the duct 4 may be formed of two portions 4a and 4b.
  • the portion 4a connects the conduit 4 to the enclosure 2 and the portion 4b extends parallel to the conduit 3.
  • the conduit 5 may in turn be formed of two portions 5a and 5b where the portion 5a connects the conduit 5 to the enclosure 2. Portions 5a and 5b extend parallel to the duct 3, and the diameter of the portion 5a may be slightly greater than the diameter of the portion 5b.
  • the arrangement and direction of the ducts depend on the space in the engine compartment, around the casing 1, so that it is not beyond the scope of the invention if the orientation of the ducts 3, 4 and 5 differs from that illustrated in Figures 1 to 3 .
  • connection of the three free ends 19, 20 and 21 of the ducts 3, 4 and 5 to the three elements of the circuit can be achieved by means of additional ducts, sufficiently long.
  • the housing 1 comprises a contact element 6.
  • the element 6 is a flat surface attached to the enclosure 2, and intended to be affixed to the cylinder head of the vehicle engine.
  • Ports 7, 8, 9 and 10 may be formed in the element 6 so as to receive fastening means, not shown.
  • These attachment means advantageously comprise screws, and are intended to hold the housing 1 on the cylinder head.
  • the chamber 2 may be provided with an opening 11 which can be reversibly closed by means of a plug 18.
  • the opening 11 is intended for the manual bleeding of the cooling circuit .
  • the housing 1 also comprises a temperature sensor 12, which can be housed in a cylindrical portion 13, fixed to the enclosure 2.
  • Recesses may be provided on the housing, so as to facilitate mounting the fastening means through the orifices 7, 8, 9 and 10 for fixing the housing on the cylinder head of the engine.
  • the recesses 16 and 17 are made on the water outlet duct 3 to facilitate access to the orifices 8 and 9.
  • the housing 1 comprises a water inlet 14 allowing the passage of water from the engine to the enclosure 2. From advantageousously, the inlet 14 is formed in the contact element 6.
  • the cylindrical portion 13 is disposed on the housing 1 so that the temperature sensor 12 is in direct and continuous contact with the water present in the enclosure 2.
  • the chamber 2 contains a thermostat 15, arranged so as to control the passage of water from the chamber 2 to the radiator, through the outlet 3.
  • the longitudinal axis of the thermostat extends perpendicular to the longitudinal axis of the sensor 12.
  • the senor is preferably arranged opposite the water inlet 14 of the housing 1.
  • the housing 1 shown on the figure 2 comprises a temperature sensor 12 permanently integrated in the housing 1, and by overmolding.
  • Definitive integration means a fixation such that the sensor 12 can not be separated from the housing 1 without destroying the housing 1 or the sensor 12.
  • the example shown in figure 3 differs from the example shown in figure 2 in that the housing 1 comprises a temperature sensor 12 not obtained by overmolding, but by welding.
  • the sensor 12 is advantageously welded to the cylindrical portion 13, so that two extensions 12a and 12b of the sensor 12 are integrated in the portion 13.
  • the welding may be performed by a mirror welding method or by a vibration welding method.
  • the invention also relates to the method of manufacturing a water outlet housing 1 as previously described, comprising a step in which the temperature sensor 12 is permanently integrated in the housing 1.
  • the step of integrating the sensor 12 to the housing is an overmolding step.
  • the housing 1 is formed around the temperature sensor 12.
  • the step of integrating the sensor 12 to the housing is a welding step.
  • the temperature sensor 12 is welded to the housing 1.
  • the invention also relates to a motor vehicle whose cooling circuit comprises a water outlet housing 1 as previously described.
  • the manufacture of a housing according to the invention is less expensive than the manufacture of a conventional housing. It does not require the addition of an O-ring between the sensor 12 and the housing 1, nor the addition of a clip to hold the two elements.
  • the step of disassembling the sensor 12 on the housing 1 is removed. This makes it possible to use the space formerly used for dismantling, as part of a new function.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Claims (7)

  1. Wasserauslassgehäuse für einen Kühlkreis eines Verbrennungsmotors, das aus Kunststoff hergestellt ist und einen Thermostat (15), einen Temperatursensor (12), einen Einlass (14) für Wasser vom Motor und drei Wasserauslässe (3, 4, 5) umfasst, wobei der erste Auslass (4) zur Versorgung eines Lufterhitzers mit Wasser bestimmt ist, wobei der zweite Auslass (3) zur Versorgung eines Kühlers bestimmt ist und der dritte Auslass (5) zur Umleitung des Wassers, wenn der Auslass (3), der zur Versorgung des Kühlers mit Wasser bestimmt ist, durch den Thermostat (15) geschlossen wird, bestimmt ist, dadurch gekennzeichnet, dass es durch ein Herstellungsverfahren erhalten wird, bei dem der Temperatursensor (12) durch einen Schritt des Anformens des Gehäuses um den Sensor (12) herum oder des Anschweißens des Sensors dauerhaft in das Gehäuse integriert wird, so dass der Temperatursensor (12) nicht ohne Zerstörung des Gehäuses oder des Temperatursensors von dem Gehäuse gelöst werden kann.
  2. Wasserauslassgehäuse nach Anspruch 1, dadurch gekennzeichnet, dass das Schweißen durch Spiegelschweißen oder durch Vibrationsschweißen erfolgt.
  3. Wasserauslassgehäuse nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass es eine hohle Schale (2) umfasst, wobei der Einlass (14) das Strömen des Wassers vom Motor zur Schale (2) ermöglicht.
  4. Wasserauslassgehäuse nach Anspruch 3, dadurch gekennzeichnet, dass der Temperatursensor (12) derart positioniert ist, dass er in direktem und andauerndem Kontakt mit dem in der Schale (2), die den Thermostat (15) umgibt, vorhandenen Wasser ist.
  5. Wasserauslassgehäuse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich der Temperatursensor (12) entlang der Achse des Einlasses (14) für Wasser vom Motor erstreckt.
  6. Wasserauslassgehäuse nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass sich die Längsachse des Thermostats (15) senkrecht zur Längsachse des Sensors (12) erstreckt.
  7. Kraftfahrzeug, das mit einem Kühlkreis versehen ist, der ein Wasserauslassgehäuse (1) nach einem der vorhergehenden Ansprüche umfasst.
EP16186682.7A 2015-09-02 2016-08-31 Thermostatgehäuse Active EP3139015B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1558128A FR3040434B1 (fr) 2015-09-02 2015-09-02 Boitier de sortie d'eau

Publications (2)

Publication Number Publication Date
EP3139015A1 EP3139015A1 (de) 2017-03-08
EP3139015B1 true EP3139015B1 (de) 2019-06-05

Family

ID=54291534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16186682.7A Active EP3139015B1 (de) 2015-09-02 2016-08-31 Thermostatgehäuse

Country Status (2)

Country Link
EP (1) EP3139015B1 (de)
FR (1) FR3040434B1 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2774423A1 (fr) * 1998-02-02 1999-08-06 Bailly Comte Ets Boitier de derivation pour la circulation d'un fluide caloporteur dans un moteur a combustion interne

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711393B1 (fr) * 1993-10-20 1996-01-12 Jaeger Système comprenant une prise de température notamment sur tubulure plastique.
DE29820453U1 (de) * 1998-11-17 1999-02-25 Henschel Kunststofftechnik Gmbh, 29693 Hodenhagen Temperaturgeber
JP2007514890A (ja) * 2003-12-19 2007-06-07 ベール ゲーエムベーハー ウント コー カーゲー 給気を冷却するための回路装置と、このような回路装置を作動させるための方法
DE102005052559A1 (de) * 2005-11-02 2007-05-10 Behr Gmbh & Co. Kg Regelbarer Antrieb für ein Kraftfahrzeug, insbesondere für eine Kühlmittelpumpe
IL187922A (en) * 2007-12-06 2012-01-31 Eitan Rivlin Frictionless pressure balanced proportioning valve assembly
DE202012004701U1 (de) * 2012-05-10 2012-06-27 Behr Thermot-Tronik Gmbh Kühlsystem

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2774423A1 (fr) * 1998-02-02 1999-08-06 Bailly Comte Ets Boitier de derivation pour la circulation d'un fluide caloporteur dans un moteur a combustion interne

Also Published As

Publication number Publication date
EP3139015A1 (de) 2017-03-08
FR3040434A1 (fr) 2017-03-03
FR3040434B1 (fr) 2018-07-13

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